U.S. patent application number 15/300253 was filed with the patent office on 2017-05-25 for upper of shoe.
This patent application is currently assigned to ASICS CORPORATION. The applicant listed for this patent is Masashi Isobe, Mai Nonogawa. Invention is credited to Masashi Isobe, Mai Nonogawa.
Application Number | 20170143075 15/300253 |
Document ID | / |
Family ID | 54239564 |
Filed Date | 2017-05-25 |
United States Patent
Application |
20170143075 |
Kind Code |
A1 |
Nonogawa; Mai ; et
al. |
May 25, 2017 |
Upper of Shoe
Abstract
An upper including: a reinforcement member on a medial or a
lateral side being provided, the reinforcement member being less
stretchable than a member forming a sock and extending from a
medial or lateral eyelet stay to a sole while being attached to a
medial or lateral side surface of the sock, the lateral
reinforcement member including a first reinforcement portion
covering a fifth proximal phalanx from a side surface, and a second
reinforcement portion covering a shaft or a base of a fifth
metatarsal bone from a side surface, the medial reinforcement
member including a third reinforcement portion covering a ball of a
big toe from a side surface, and a width of at least one of the
reinforcement portions being smaller at a lower end portion thereof
than at an upper end portion thereof.
Inventors: |
Nonogawa; Mai; (Kobe-Shi,
JP) ; Isobe; Masashi; (Kobe-shi, JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Nonogawa; Mai
Isobe; Masashi |
Kobe-shi
Kobe-shi |
|
JP
JP |
|
|
Assignee: |
ASICS CORPORATION
Kobe-Shi
JP
|
Family ID: |
54239564 |
Appl. No.: |
15/300253 |
Filed: |
March 31, 2014 |
PCT Filed: |
March 31, 2014 |
PCT NO: |
PCT/JP2014/059541 |
371 Date: |
September 28, 2016 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A43B 23/0265 20130101;
A43B 23/0235 20130101; A43B 23/0215 20130101; A43B 23/0275
20130101; A43B 7/28 20130101; A43B 1/04 20130101; A43B 23/026
20130101 |
International
Class: |
A43B 7/28 20060101
A43B007/28; A43B 1/04 20060101 A43B001/04; A43B 23/02 20060101
A43B023/02 |
Claims
1. An upper of a shoe comprising: a sock; lateral and medial edge
portions placed respectively on lateral and medial edges of an
opening of the sock, the lateral and medial edge portions being
less stretchable than a member forming the sock, and defining a
plurality of holes through which a shoelace passes; at least one
reinforcement member on a lateral side, the at least one
reinforcement member being less stretchable than the member forming
the sock and extending from the lateral edge portion to a sole or a
heel counter while being attached to a lateral-side surface of the
sock; and at least one reinforcement member on a medial side, the
at least one reinforcement member on the medial side being less
stretchable than the member forming the sock and extending from the
medial edge portion to the sole or the heel counter while being
attached to a medial side surface of the sock, wherein: the at
least one reinforcement member on the lateral side includes a first
reinforcement portion configured to cover at least a portion of a
fifth proximal phalanx from a side surface and a second
reinforcement portion configured to cover at least a portion of a
shaft or a base of a fifth metatarsal bone from the side surface;
the at least one reinforcement member on the medial side includes a
third reinforcement portion configured to cover at least a portion
of a ball of a big toe from a side surface; and a width of at least
one of the reinforcement portions is smaller at a lower end portion
thereof than at an upper end portion thereof.
2. The upper according to claim 1, wherein: the at least one
reinforcement member on the medial side further comprises a fourth
reinforcement portion configured to cover at least a portion of a
navicular bone from the side surface; and the fourth reinforcement
portion has a width, and a width of the fourth reinforcement
portion at a lower end portion thereof is smaller than a width of
the fourth reinforcement portion at an upper end portion
thereof.
3. The upper according to claim 1, comprising: a lateral-side soft
region, in which the member forming the sock is exposed, defined
between two virtual lines, the two virtual lines extended
downwardly, one from a most anterior one of the plurality of holes
and another from a most posterior one of the plurality of holes in
the lateral edge portion along the lateral-side surface and along a
vertical plane; and a medial-side soft region, in which the member
forming the socks is exposed, defined between two virtual lines,
the two virtual lines extended downwardly, one from a most anterior
one of the plurality of holes and another from a most posterior one
of the plurality of holes in the medial edge portion along the
medial-side surface and along a vertical plane, wherein an area of
the medial-side soft region is larger than an area of the
lateral-side soft region.
4. The upper according to claim 2, wherein a center line of the
fourth reinforcement portion along a direction in which the fourth
reinforcement portion extends extends in a diagonally rearward and
downward direction toward the sole, and an angle formed between the
center line of the fourth reinforcement portion and a horizontal
line is smaller than an angle formed between a center line of the
first reinforcement portion along a direction in which the first
reinforcement portion extends and the horizontal line, and the
angle is smaller than an angle formed between a center line of the
second reinforcement portion along a direction in which the second
reinforcement portion extends and the horizontal line.
5. The upper according to claim 4, wherein a center line of the
third reinforcement portion along a direction in which the third
reinforcement portion extends in a diagonally rearward and downward
direction toward the sole.
6. The upper according to claim 4, wherein the angle formed between
the center line of the fourth reinforcement portion and the
horizontal line is smaller than an angle formed between a center
line of the third reinforcement portion along a direction in which
the third reinforcement portion extends and the horizontal
line.
7. The upper according to claim 2, wherein: a line along a rear end
of the fourth reinforcement portion is more tilting forward than a
line along a rear end of the second reinforcement portion; and a
lower end of the line along the rear end of the fourth
reinforcement portion is placed posterior to a lower end of the
line along the rear end of the second reinforcement portion, with
the fourth reinforcement portion configured to cover a front
portion of a lower portion of a calcaneal bone from a side
surface.
8. The upper according to claim 2, wherein an area of a medial-side
soft region, in which the member forming the sock is exposed,
between the third reinforcement portion and the fourth
reinforcement portion on the medial side surface is larger than an
area of a lateral-side soft region, in which the member forming the
sock is exposed, between the first reinforcement portion and the
second reinforcement portion on the lateral-side surface.
9. The upper according to claim 2 wherein the third reinforcement
portion has a width, and a width of a lower end portion of the
third reinforcement portion is smaller than a width of an upper end
portion of the third reinforcement portion.
10. The upper according to claim 2 wherein the second reinforcement
portion has a width, and a width of a lower end portion of the
second reinforcement portion is smaller than a width of an upper
end portion of the second reinforcement portion.
11. The upper according to claim 2 wherein the first reinforcement
portion has a width, and a width of a lower end portion of the
first reinforcement portion is smaller than a width of an upper end
portion of the first reinforcement portion.
12. The upper according to claim 2, wherein: the width of the third
reinforcement portion is smaller at a lower end portion thereof
than at an upper end portion thereof; the width of the second
reinforcement portion is smaller at a lower end portion thereof
than at an upper end portion thereof; and the width of the first
reinforcement portion is smaller at a lower end portion thereof
than at an upper end portion thereof.
13. The upper according to claim 12, wherein an area of a
medial-side soft region, in which the member forming the sock is
exposed, between the third reinforcement portion and the fourth
reinforcement portion on the medial-side surface is larger than an
area of a lateral-side soft region, in which the member forming the
socks is exposed, between the first reinforcement portion and the
second reinforcement portion on the lateral-side surface.
14. The upper according to claim 2, wherein: a center line of the
fourth reinforcement portion along a direction in which the fourth
reinforcement portion extends in a diagonally rearward and downward
direction toward the sole, an angle formed between the center line
of the fourth reinforcement portion and a horizontal line is
smaller than an angle formed between a center line of the first
reinforcement portion along a direction in which the first
reinforcement portion extends and the horizontal line, and the
angle is smaller than an angle formed between a center line of the
second reinforcement portion along a direction in which the second
reinforcement portion extends and the horizontal line; a line along
a rear end of the fourth reinforcement portion is more tilting
forward than a line along a rear end of the second reinforcement
portion; a lower end of the line along the rear end of the fourth
reinforcement portion is placed posterior to a lower end of the
line along the rear end of the second reinforcement portion; and
the fourth reinforcement portion is configured to cover a front
portion of a lower portion of a calcaneal bone.
15. The upper according to claim 1 wherein: the plurality of holes
includes four or more holes configured to be provided on each of a
lateral side and a medial side of a foot; and a width of each of
the reinforcement portions at the upper end portion thereof is set
in such a manner that the upper end portion faces a plurality of
holes of the four or more holes on the lateral or medial side.
16. An upper of a shoe comprising: a sock; a lateral edge portion
and a medial edge portion each placed on an edge near a center of
the sock in a foot width direction, the lateral and medial edge
portions being less stretchable than a member forming the sock; at
least one reinforcement member on a lateral side, the at least one
reinforcement member being less stretchable than the member forming
the sock and extending from the lateral edge portion to a sole or a
heel counter while being attached to a lateral-side surface of the
sock; and at least one reinforcement member on a medial side, the
at least one reinforcement member on the medial side being less
stretchable than the member forming the sock and extending from the
medial edge portion to the sole or the heel counters while being
attached to a medial-side surface of the sock, wherein: the at
least one reinforcement member on the lateral side includes a first
reinforcement portion configured to cover at least a portion of a
fifth proximal phalanx from a side surface and a second
reinforcement portion configured to cover at least a portion of a
shaft or a base of a fifth metatarsal bone from the side surface;
the at least one reinforcement member on the medial side includes a
third reinforcement portion configured to cover at least a portion
of a ball of a big toe from a side surface; and a width of at least
one of the plurality of reinforcement portions is smaller at a
lower end portion thereof than at an upper end portion thereof.
17. The upper according to claim 1, comprising: a lateral-side soft
region in which the member forming the sock is exposed, defined
between two virtual lines extended downwardly, one from a part of
the lateral edge portion configured to correspond to a front end of
a ball of a little toe and another from a part of the lateral edge
portion configured to correspond to a rear end of a lateral
malleolus, along the lateral-side surface and along a vertical
plane; and a medial-side soft region in which the member forming
the socks is exposed, defined between two virtual lines extended
downwardly, one from a part of the medial edge portion configured
to correspond to a front end of a ball of a big toe and another
from a part of the medial edge portion configured to correspond to
a rear end of a medial malleolus, along the medial-side surface and
along a vertical plane, wherein an area of the medial-side soft
region is larger than an area of the lateral-side soft region.
Description
TECHNICAL FIELD
[0001] The present invention relates to improvement of an upper of
a shoe.
BACKGROUND ART
[0002] A shoe is required to achieve various functions such as
lightweight properties and comfortable touch with a foot in
addition to a fit (fitting property) at the time of wearing of the
shoe. In consideration of comfortable touch with a foot, many
uppers are made of a soft material such as a mesh. An upper made of
a soft material such as a mesh, specifically, an upper made of a
low-rigidity material cannot distribute tightening force generated
during fastening with a lace or a belt (belts), etc. throughout the
upper, making it difficult to achieve a fit.
[0003] To enhance the fit of the low-rigidity upper, the upper
should be reinforced using a material of higher rigidity to
transmit tightening (securing) force to be generated throughout the
upper. Some of shoes having been commercially available so far are
provided with high-rigidity reinforcement members placed at uppers
in consideration of transmission of tightening force. In many
cases, however, lightweight properties or a fit is damaged in a
manner that depends on the shape or volume of a reinforcement
member.
CITATION LIST
Patent Literature
[0004] The first patent document: WO 2001/082735 (front page)
[0005] The second patent document: JP 2003-24108A (front page)
[0006] The third patent document: JP 02-5903A (FIG. 1)
[0007] The fourth patent document: JP 11-201 (front page)
[0008] The fifth patent document: JP 60-227701 (FIGS. 1 and 2)
SUMMARY OF INVENTION
[0009] To enhance a fit (fitting property) at the time of wearing
of a shoe, tightening force generated during fastening of the shoe
with a fastening member such as a shoelace or a belt should be
distributed throughput an upper, and/or an upper should conform to
a foot shape of a wearer.
[0010] A conventional shoe includes many reinforcement members for
transmitting tightening force to be generated during fastening with
a shoelace or a belt, etc. throughout an upper, failing (making it
unlikely) to achieve lightweight properties. In addition, a
reinforcement member extending in a vertical direction of the upper
has a width at the lower end thereof on the sole side same as or
larger than a width at the upper end thereof. This makes it
difficult for the reinforcement member to deform freely when a
wearer fastens the upper with a shoelace or a belt, etc., making it
difficult for the upper to achieve a fit with the shape of a foot
of the wearer.
[0011] It is therefore an object of the present invention to
provide an upper of a shoe capable of contributing to weight
reduction and enhancement of a fit.
[0012] According to one aspect, an upper of a shoe of the present
invention includes:
[0013] a sock 5;
[0014] a lateral edge portion 7L and a medial edge portion 7M
placed respectively on a lateral edge 5E and a medial edge 5E of an
opening 50 of the sock 5, the lateral and medial edge portions 7L
and 7M being less stretchable (harder to stretch) than a member
forming the sock 5, and defining a plurality of holes H through
which a shoelace 6 passes;
[0015] at least one reinforcement member on a lateral side L, the
at least one reinforcement member being less stretchable than the
member forming the sock 5 and extending from the lateral edge
portion 7L to a sole 8 or a heel counter 9 while being attached to
a lateral-side surface of the sock 5; and
[0016] at least one reinforcement member on a medial side M, the at
least one reinforcement member on the medial side M being less
stretchable than the member forming the sock 5 and extending from
the medial edge portion 7M to the sole 8 or the heel counter 9
while being attached to a medial side surface of the sock 5,
wherein:
[0017] the at least one reinforcement member on the lateral side L
includes
[0018] a first reinforcement portion 1 covering at least a portion
of a fifth proximal phalanx B50 from a side surface and
[0019] a second reinforcement portion 2 covering at least a portion
of a shaft or a base of a fifth metatarsal bone B51 from the side
surface;
[0020] the at least one reinforcement member on the medial side M
includes a third reinforcement portion 3 covering at least a
portion of a ball O1 of a big toe from a side surface; and
[0021] a width of at least one of the plurality of the
reinforcement portions (the first, second, and third reinforcement
portions) is smaller at a lower end portion thereof (of one
reinforcement portion) than at an upper end portion thereof (of the
one reinforcement portion).
[0022] According to the present invention, the recitation "the at
least one reinforcement member on the lateral side L includes a
first reinforcement portion 1 and a second reinforcement portion 2"
covers a case where "the at least one reinforcement member includes
both the first and second reinforcement portions" and a case where
"the at least one reinforcement member includes the first
reinforcement portion and the other at least one reinforcement
member, different from the former (aforementioned) reinforcement
member, includes the second reinforcement portion," for
example.
[0023] According to the present invention, the width of the at
least one reinforcement portion is smaller at the lower end portion
thereof than at the upper end portion thereof. The reinforcement
member extending from an upper edge of the upper to a sole or a
heel counter will function to distribute the force of a shoelace
acting on an eyelet stay (decoration) 7L and an eyelet stay
(decoration) 7M throughout the upper. The width of the
reinforcement portion being smaller at the lower end portion
thereof than at the upper end portion thereof means that the width
of the reinforcement portion restrained by the sole or the heel
counter is small. This will allow the reinforcement portion to
deform relatively freely.
[0024] Thus, the upper achieves a fit with a foot shape of a wearer
easily. Further, the reinforcement member is placed at a minimum
required site such as at least a portion of a fifth proximal
phalanx, a fifth metatarsal bone, or a ball of a big toe. As a
result, the area of the reinforcement member is reduced and this
will contribute to weight reduction.
[0025] The first reinforcement portion 1 covers a fifth proximal
phalanx B50 and the second reinforcement portion 2 covers a shaft
and/or a base of a fifth metatarsal bone B51. In this way, the
upper supports the lateral side of a foot efficiently using the
small reinforcement member and achieves a fit with (in) the lateral
side of the foot easily. Further, the area of the reinforcement
member is reduced and this will contribute to weight reduction.
[0026] Meanwhile, the third reinforcement portion 3 covers a side
surface of a ball O1 of a big toe. In this way, the medial side of
a foot is supported efficiently using the small reinforcement
member, and a fit with (in) the medial side of the foot is achieved
easily. Further, the area of the reinforcement member is reduced
and this will contribute to weight reduction.
[0027] According to a different (another) aspect, the upper of a
shoe of the present invention includes:
[0028] a sock 5; a lateral edge portion 7L and a medial edge
portion 7M each placed on an edge 5E near a center of the sock 5 in
a foot width direction (a direction of a foot breadth), the lateral
and medial edge portions 7L and 7M being less stretchable than a
member forming the sock 5;
[0029] at least one reinforcement member on a lateral side L, the
at least one reinforcement member being less stretchable than the
member forming the sock 5 and extending from the lateral edge
portion 7L to a sole 8 or a heel counter 9 while being attached to
a lateral-side surface of the sock 5; and
[0030] at least one reinforcement member on a medial side M, the at
least one reinforcement member on the medial side M being less
stretchable than the member forming the sock 5 and extending from
the medial edge portion 7M to the sole 8 or the heel counter 9
while being attached to a medial-side surface of the sock 5,
wherein:
[0031] the at least one reinforcement member on the lateral side L
includes
[0032] a first reinforcement portion 1 covering at least a portion
of a fifth proximal phalanx B50 from a side surface and
[0033] a second reinforcement portion 2 covering at least a portion
of a shaft or a base of a fifth metatarsal bone B51 from the side
surface;
[0034] the at least one reinforcement member on the medial side M
includes a third reinforcement portion 3 covering at least a
portion of a ball O1 of a big toe from a side surface; and
[0035] a width of at least one of the plurality of reinforcement
portions (the first, second, and third reinforcement portions) is
smaller at a lower end portion thereof (of one reinforcement
portion) than at an upper end portion thereof (of the one
reinforcement portion).
[0036] This aspect may achieve effect comparable to the effect
achieved by the aforementioned one aspect.
[0037] According to the aforementioned "different aspect," a
fastening member including a shoelace may be provided. For example,
a non-stretchable or stretchable belt (belts) member may be
employed as the fastening member as well as the shoelace. If the
belt member is employed, one, or two or more belts may be
provided.
[0038] According to the present invention, if a shoe has a
shoelace, the edge portions 7L and 7M may be formed of eyelet stays
(decorations) or tubular loops, for example. If the upper of the
shoe is fastened with a belt (belt) and is not fastened with a
shoelace, the edge portions 7L and 7M can be formed by using a
material same as or similar to that used for forming the
reinforcement member and can be formed by using a material less
stretchable than a material forming the sock 5.
[0039] Note that a base of each bone means a slightly bulging thick
site near a posterior joint of the bone. This base is also called a
proximal condyle. A head (condyle) of each bone means a slightly
bulging thick site near an anterior joint of the bone and is also
called a distal condyle. A shaft of each bone means a site between
the base and the head (condyle) of the bone and generally has a
smoothly changing thickness.
[0040] According to the present invention, the upper end portion of
each reinforcement portion generally means an uppermost one-third
portion of the reinforcement portion defined by equally dividing
each reinforcement portion into three portions vertically. The
lower end portion of each reinforcement portion generally means a
lowermost one-third portion of the reinforcement portion defined by
equally dividing the reinforcement portion into three portions
vertically.
[0041] According to the present invention, the "width of the
reinforcement portion" can be read (understood) as a width in an
alignment direction of the plurality of holes H in which these
holes H through which the shoelace 6 passes are aligned smoothly in
a line on the medial or lateral side.
[0042] On the other hand, in every case including alignment of the
plurality of holes H in a staggered pattern on the medial or
lateral side, the "width of the reinforcement portion" can be read
as a width in a direction perpendicular to each of center lines C1
to C4 of the respective first to fourth reinforcement portions
along a direction in which a corresponding reinforcement portion
extends.
[0043] If a line along a front end (edge) or a rear end (edge) of
each of the reinforcement portions 1 to 4 does not extend smoothly,
for example, an average of the aforementioned uppermost one-third
portions can be employed as the "width of the upper end portion of
the reinforcement portion" whereas an average of the aforementioned
lowermost one-third portions can be employed as the "width of the
lower end portion of the reinforcement portion."
BRIEF DESCRIPTION OF DRAWINGS
[0044] FIG. 1A is a lateral side view of a shoe showing a first
embodiment of the present invention, and FIG. 1B is a medial side
view of this shoe.
[0045] FIG. 2A is a lateral side view of a shoe showing a second
embodiment of the present invention, and FIG. 2B is a medial side
view of this shoe.
[0046] FIG. 3A is a lateral side view of a shoe showing a third
embodiment of the present invention, and FIG. 3B is a medial side
view of this shoe.
[0047] FIG. 4A is a lateral side view of a shoe showing a fourth
embodiment of the present invention, and FIG. 4B is a medial side
view of this shoe.
[0048] FIG. 5A is a lateral side view of a shoe showing a fifth
embodiment of the present invention, and FIG. 5B is a medial side
view of this shoe.
[0049] FIG. 6A is a lateral side view of a shoe showing a sixth
embodiment of the present invention, and FIG. 6B is a medial side
view of this shoe.
[0050] FIG. 7A is a lateral side view of a shoe showing a seventh
embodiment of the present invention, and FIG. 7B is a medial side
view of this shoe.
[0051] FIG. 8A is a lateral side view of a shoe showing an eighth
embodiment of the present invention, and FIG. 8B is a medial side
view of this shoe.
[0052] FIG. 9A is a lateral side view of a shoe showing a ninth
embodiment of the present invention, and FIG. 9B is a medial side
view of this shoe.
[0053] FIG. 10A is a lateral side view of a shoe showing a tenth
embodiment of the present invention, and FIG. 10B is a medial side
view of this shoe.
[0054] FIG. 11 is a schematic plan view of an upper showing a
direction of tightening force acting in response to fastening with
a shoelace.
[0055] FIG. 12A is a lateral side view of a show showing
Comparative Example, FIG. 12B is a medial side view of this shoe,
and FIG. 12C is a schematic sectional view of a shoe showing an
evaluation method.
[0056] FIG. 13 is a bar graph showing evaluation result.
[0057] FIG. 14A is a lateral side view of a shoe showing an
eleventh embodiment of the present invention, and FIG. 14B is a
medial side view of this shoe.
DESCRIPTION OF EMBODIMENTS
[0058] According to the one or the different aspect of the present
invention, one of preferable embodiments described below can be
employed or the following embodiments can be employed in
combination. At least recitations in the dependent claims of the
appended claims are also applicable to the different aspect.
[0059] For example, preferably, the at least one reinforcement
member on the medial side further includes a fourth reinforcement
portion 4 covering at least a portion of a navicular bone BS from
the side surface, and the fourth reinforcement portion 4 has a
width, and a width W40 at a lower end portion of the fourth
reinforcement portion 4 is smaller than a width W41 at an upper end
portion of the fourth reinforcement portion 4.
[0060] In this case, the fourth reinforcement portion 4 covers the
navicular bone BS. This allows the upper to achieve a fit with a
middle foot section easily using the small reinforcement member.
Further, the area of the reinforcement member is reduced and this
will contribute to weight reduction. The width of the fourth
reinforcement portion 4 being smaller at the lower end portion
thereof than at the upper end portion thereof means that the width
of the fourth reinforcement portion 4 restrained by a sole or a
heel counter is small. This will allow the fourth reinforcement
portion 4 to deform relatively freely. In this way, the upper will
achieve a fit with a foot shape of a wearer easily.
[0061] Preferably, the upper comprises:
[0062] a lateral-side soft region LS, in which the member forming
the sock 5 is exposed, defined between two virtual lines, the two
virtual lines extended downwardly, one from a most anterior F one H
of the plurality of holes H and another from a most posterior R one
H of the plurality of holes H in the lateral edge portion 7L along
the lateral-side surface and along a vertical plane; and
[0063] a medial-side soft region MS, in which the member forming
the sock 5 is exposed, defined between two virtual lines, the two
virtual lines extended downwardly, one from a most anterior F one H
of the plurality of holes H and another from a most posterior R one
H of the plurality of holes H in the medial edge portion 7M along
the lateral-side surface and along a vertical plane,
[0064] wherein an area of the medial-side soft region MS be larger
than an area of the lateral-side soft region LS.
[0065] In this case, the medial-side soft region MS larger than the
lateral-side soft region LS is provided on the medial side of a
foot having a shape with irregularities (a concave and convex
shape) more complex than those on the lateral side of the foot.
This allows the upper to achieve a fit easily on the medial side.
Meanwhile, even though the area of the lateral-side soft region LS
is smaller than that on the medial side and an upper includes a
large area of a reinforcement member on the lateral side, the upper
will still achieve a fit with a foot on the lateral side of the
foot, because the lateral-side foot has a shape with irregularities
simpler than those on the medial side.
[0066] Preferably, a center line C4 of the fourth reinforcement
portion 4 along a direction in which the fourth reinforcement
portion 4 extends in a diagonally rearward and downward direction
toward the sole 8, and
[0067] an angle K4 formed between the center line C4 of the fourth
reinforcement portion 4 and a horizontal line is smaller than an
angle K1 formed between a center line C1 of the first reinforcement
portion 1 along a direction in which the first reinforcement
portion 1 extends and the horizontal line, and
[0068] the angle K4 is smaller than an angle K2 formed between a
center line C2 of the second reinforcement portion along a
direction in which the second reinforcement portion 2 extends and
the horizontal line.
[0069] In this case, the fourth reinforcement portion 4 leans
(tilts) largely in a posture more leaning forward than the first
and second reinforcement portions 1 and 2. Specifically, the fourth
reinforcement portion extends in a diagonally rearward and downward
direction from a navicular bone BS. Thus, on the medial side of a
foot having a more complex side-surface shape than the lateral side
of the foot, fastening force of a shoelace or a belt, etc. is
transmitted further rearward in an extended range. Specifically,
the upper also achieves a fit easily in the extended rearward range
on the medial side.
[0070] Preferably, a center line C3 of the third reinforcement
portion 3 along a direction in which the third reinforcement
portion 3 extends in a diagonally rearward and downward direction
toward the sole 8.
[0071] In this case, the third reinforcement portion 3 is placed in
a forward leaning (inclination) posture. This will allow the third
reinforcement portion 3 to cover a base of a first proximal phalanx
from above on the medial side of a forefoot section.
[0072] Preferably, the angle K4 formed between the center line C4
of the fourth reinforcement portion 4 and the horizontal line is
smaller than an angle K3 formed between a center line C3 of the
third reinforcement portion 3 along a direction in which the third
reinforcement portion 3 extends and the horizontal line.
[0073] In this case, on the medial side of a foot, the fourth
reinforcement portion 4 leans forward more largely than the third
reinforcement portion 3. This places the lower end portion of the
fourth reinforcement portion 4 in a posterior position to form the
large soft region MS between the third and fourth reinforcement
portions 3 and 4, with the large soft region MS covered with the
sock. In this way, fastening force of a shoelace or a belt, etc.
acts on the medial side of the foot having a complex shape.
[0074] Preferably, a line 41 along a rear end (edge) of the fourth
reinforcement portion 4 is more tilting (leaning, inclining)
forward than a line 21 along a rear end (edge) of the second
reinforcement portion 2, and a lower end 4E of the line 41 along
the rear end of the fourth reinforcement portion 4 is placed
posterior to a lower end 2E of the line 21 along the rear end of
the second reinforcement portion 2, with the fourth reinforcement
portion 4 covering a front portion of a lower portion of a
calcaneal bone BC from a side surface.
[0075] Generally, a part (site) directly below a malleolus on the
medial side M of a foot is necked (narrowed, constricted) subtly,
compared to a counterpart on the lateral side L of the foot. A gap
with the upper is likely to occur at this part. In the present
case, the fourth reinforcement portion 4 largely leaning forward
covers a front portion of a lower portion of a calcaneal bone BC.
This will allow the upper to achieve a fit with the foot at the
aforementioned part easily.
[0076] Preferably, an area of a medial-side soft region MS, in
which the member forming the sock 5 is exposed, between the third
reinforcement portion 3 and the fourth reinforcement portion 4 on
the medial side surface is larger than an area of a lateral-side
soft region LS, in which the member forming the sock 5 is exposed,
between the first reinforcement portion 1 and the second
reinforcement portion 2 on the lateral-side surface.
[0077] In this case, the medial-side soft region MS larger than the
lateral-side soft region LS is provided on the medial side of a
foot having a shape with irregularities more complex than those on
the lateral side of the foot. This allows the upper to achieve a
fit easily on the medial side. Meanwhile, even though the area of
the lateral-side soft region LS is smaller than that on the medial
side and an upper includes a large area of a reinforcement member
on the lateral side, the upper will still achieve a fit with a foot
on the lateral side of the foot, because the lateral-side foot has
a shape with irregularities simpler than those on the medial
side.
[0078] According to the present invention, the reinforcement member
includes one or more reinforcement portions having lower end
portions smaller than upper end portions thereof.
[0079] For example, the third reinforcement portion 3 has the
width, and a width W30 of a lower end portion of the third
reinforcement portion 3 is smaller than a width W31 of an upper end
portion of the third reinforcement portion 3.
[0080] Alternatively, the second reinforcement portion 2 has the
width, and a width W20 of a lower end portion of the second
reinforcement portion 2 is smaller than a width W21 of an upper end
portion of the second reinforcement portion 2.
[0081] Alternatively, the first reinforcement portion 1 has the
width, and a width W10 of a lower end portion of the first
reinforcement portion 1 is smaller than a width W11 of an upper end
portion of the first reinforcement portion 1.
[0082] Two or more of these reinforcement portions may have widths
of lower end portions thereof smaller than widths of upper end
portions thereof.
[0083] Still preferably, the width of the third reinforcement
portion 3 is smaller at a lower end portion of the third
reinforcement portion than at an upper end portion of the third
reinforcement portion,
[0084] the width of the second reinforcement portion 2 is smaller
at a lower end portion of the second reinforcement portion than at
an upper end portion of the second reinforcement portion, and
[0085] the width of the first reinforcement portion 1 is smaller at
a lower end portion of the first reinforcement portion than at an
upper end portion of the first reinforcement portion.
[0086] This will contribute to further enhancement of a fit of the
upper and further weight reduction of the upper.
[0087] Still preferably, an area of a medial-side soft region MS,
in which the member forming the sock 5 is exposed, between the
third reinforcement portion 3 and the fourth reinforcement portion
4 on the medial-side surface is larger than an area of a
lateral-side soft region LS, in which the member forming the sock 5
is exposed, between the first reinforcement portion 1 and the
second reinforcement portion 2 on the lateral-side surface.
[0088] This will contribute to achieving the aforementioned effect
optimally.
[0089] Preferably, a center line C4 of the fourth reinforcement
portion 4 along a direction in which the fourth reinforcement
portion 4 extends in a diagonally rearward and downward direction
toward the sole 8,
[0090] an angle K4 formed between the center line C4 of the fourth
reinforcement portion 4 and a horizontal line is smaller than an
angle K1 formed between a center line C1 of the first reinforcement
portion 1 along a direction in which the first reinforcement
portion 1 extends and the horizontal line, and
[0091] the angle K4 is smaller than an angle K2 formed between a
center line C2 of the second reinforcement portion 2 along a
direction in which the second reinforcement portion 2 extends and
the horizontal line;
[0092] a line 41 along a rear end (edge) of the fourth
reinforcement portion 4 is more tilting (leaning, inclining)
forward than a line 21 along a rear end (edge) of the second
reinforcement portion 2;
[0093] a lower end 4E of the line along the rear end of the fourth
reinforcement portion 4 is placed posterior to a lower end 2E of
the line 21 along the rear end of the second reinforcement portion
2; and
[0094] the fourth reinforcement portion 4 covers a front portion of
a lower portion of a calcaneal bone BC.
[0095] Preferably, the plurality of holes H in the upper includes
four or more holes provided on each of a lateral side and a medial
side of a foot, and
[0096] a width of each of the reinforcement portions 1 to 4 at the
upper end portion thereof is set in such a manner that the upper
end portion faces (confronts, is opposed to, is adjacent to) the
plurality of holes H of (belonging to) the four or more holes H on
the lateral or medial side.
[0097] In this case, each of the reinforcement portions 1 to 4
receives tension applied by using the shoelace 6 passed through the
plurality of holes H and transmitted through the eyelet stays 7L
and 7M. This will facilitate stabilization of a direction in which
the tension acts on the reinforcement portion having an upper end
portion facing the plurality of holes H.
[0098] In this case, the fourth reinforcement portion 4 largely
leaning forward covers a front portion of a lower portion of a
calcaneal bone BC. This will enhance a fit with the front portion
of the lower portion of the calcaneal bone BC where good conformity
with a foot is generally not achieved.
[0099] The upper includes: a lateral-side soft region LS in which
the member forming the sock 5 is exposed, defined between two
virtual lines extended downwardly, one from a part of the lateral
edge portion 7L corresponding to a front end of a ball of a little
toe and the other from a part of the lateral edge portion 7L
corresponding to a rear end of a lateral malleolus, along the
lateral-side surface and along a vertical plane; and
[0100] a medial-side soft region MS in which the member forming the
sock 5 is exposed, defined between two virtual lines extended
downwardly, one from a part of the medial edge portion 7M
corresponding to a front end of a ball of a big toe and the other
from a part of the medial edge portion 7M corresponding to a rear
end of a medial malleolus, along the medial-side surface and along
a vertical plane,
[0101] wherein an area of the medial-side soft region MS is larger
than an area of the lateral-side soft region LS.
[0102] In this case, the medial-side soft region MS larger than the
lateral-side soft region LS is provided on the medial side of a
foot having a shape with irregularities (concave and convex) more
complex than those on the lateral side of the foot. This allows the
upper to achieve a fit easily on the medial side. Meanwhile, the
area of the lateral-side soft region LS is smaller than that on the
medial side. However, even an upper including a reinforcement
member of a large area on the lateral side will achieve a fit with
a foot on the lateral side of the foot, because the lateral-side
foot has a shape with irregularities simpler than those on the
medial side.
[0103] The present invention will be understood more clearly from
the following description of preferred embodiments taken in
conjunction with the accompanying drawings. Note however that the
embodiments and the drawings are merely illustrative and should not
be taken to define the scope of the present invention. The scope of
the present invention shall be defined only by the appended claims.
In the accompanying drawings, like reference numerals denote like
components throughout the plurality of figures.
Embodiments
[0104] Embodiments of the present invention will be described below
by referring to the drawings. FIGS. 1A and 1B, FIGS. 2A and 2B,
FIGS. 3A and 3B, FIGS. 4A and 4B, FIGS. 5A and 5B, FIGS. 6A and 6B,
FIGS. 7A and 7B, FIGS. 8A and 8B, FIGS. 9A and 9B, and FIGS. 10A
and 10B show a first embodiment, a second embodiment, a third
embodiment, a fourth embodiment, a fifth embodiment, a sixth
embodiment, a seventh embodiment, an eighth embodiment, a ninth
embodiment, and a tenth embodiment respectively.
[0105] The second embodiment as a most representative embodiment
will be described first.
[0106] As shown in FIGS. 2A and 2B, an upper U is placed on a sole
8.
[0107] The sole 8 may include an outsole 80 having a ground contact
surface, and a midsole 81 placed on the outsole 80 and made of a
foamed body (foam body). In FIGS. 1A to 10B, 12, and 14, the
midsole 81 is given irregular small dots.
[0108] Referring to FIGS. 2A and 2B, the upper U includes a sock 5,
an eyelet stay 7M, an eyelet stay 7L, a reinforcement member
(portion) 1, a reinforcement member 2, a reinforcement member 3,
and a reinforcement member 4. The eyelet stays 7M and 7L and the
reinforcement member may be attached to an outer side (exterior)
surface or to an inner surface (interior surface) of the upper U.
In FIGS. 1A to 10B and 12, the eyelet stays 7M and 7L and the
reinforcement member are given regular dots.
[0109] The sock 5 shown in FIGS. 2A and 2B is formed of one or two
or more members made of woven fabric, knit fabric, or knit-like
fabric. The sock 5 covers the instep and the heel of a foot softly.
The sock 5 may include a tongue not shown in the drawings.
[0110] The lateral eyelet stay 7L and a medial eyelet stay 7M are
placed respectively on a lateral edge 5E and a medial edge 5E of an
opening 50 of the sock 5 shown in FIG. 11. The eyelet stays 7L and
7M are less stretchable than the member forming the sock 5 and
define a plurality of holes H through which a shoelace 6 passes.
The passed shoelace 6 is to exhibit fastening force at the time of
wearing. The lateral and medial eyelet stays 7L and 7M may be
continuous with each other at a front end or may be separated
(spaced apart) from each other.
[0111] As shown in FIGS. 4 to 6, each of the eyelet stays 7L and 7M
may have one or a plurality of notches (cuts) 7N. As shown in FIGS.
14A and 14B, the eyelet stay 7L may include eyelet stays 7L
separated from each other and each of the eyelet stays 7L may have
a single hole H or a plurality of holes H. Further, the eyelet stay
7M may include eyelet stays 7M separated from each other and each
of the eyelet stays 7M may have a single hole H or a plurality of
holes H.
[0112] A material forming the eyelet stays 7L and 7M shown in FIGS.
2A and 2B may be a tape material, artificial leather, or two or
more of such materials. The plurality of holes H through which the
shoelace 6 passes may be small round holes formed in the material
such as artificial leather or be loop-shaped members (materials)
sewed on the material such as artificial leather.
[0113] If the sock 5 is made of suede-like artificial leather, for
example, the edge portions 7L and 7M and the reinforcement member
(portion) 1 may be formed by using a material less stretchable than
such suede-like artificial leather.
[0114] Referring to FIG. 2A, a lateral reinforcement member
includes a first reinforcement portion 1 and a second reinforcement
portion 2. On the other hand, a medial reinforcement member of FIG.
2B includes a third reinforcement portion 3 and a fourth
reinforcement portion 4.
[0115] Referring to FIG. 2A, each of the first and second
reinforcement portions 1 and 2 is less stretchable than the member
forming the sock 5, attached to a lateral-side surface of the sock
5, and extends from the lateral eyelet stay 7L to the upper end of
the midsole 81. On the other hand, each of the third and fourth
reinforcement portions 3 and 4 of FIG. 2B is less stretchable than
the member forming the sock 5, attached to a medial-side surface of
the sock 5, and extends from the medial eyelet stay 7M to the upper
end of the midsole 81.
[0116] The first reinforcement portion 1 of FIG. 2A covers at least
a portion of a fifth proximal phalanx B50 from a side surface. The
second reinforcement portion 2 covers at least a portion of a shaft
or a base of a fifth metatarsal bone B51 from a side surface.
[0117] The third reinforcement portion 3 of FIG. 2B covers at least
a portion of a ball O1 of a big toe from a side surface. The fourth
reinforcement portion 4 covers at least a portion of a navicular
bone BS from a side surface.
[0118] Each of the reinforcement portions 1 to 4 has a width in an
alignment direction of the plurality of holes H. The width of each
of the reinforcement portions is smaller at a lower end portion
thereof than at an upper end portion thereof. The alignment
direction of the plurality of holes H mentioned herein corresponds
to an alignment direction of holes H through which the shoelace 6
passes that is to exhibit the aforementioned fastening force and
thus means an alignment direction of the holes H closer to an
anterior side F than a top line (a foot insertion opening) 59.
According to this embodiment, the plurality of holes H does not
include a most posterior hole Hr. The foot insertion opening 59 is
a part from which a leg extends during wearing and is continuous
with opening 50 on the anterior side F.
[0119] A width W10 of a lower end portion of the first
reinforcement portion 1 is smaller than a width W11 of an upper end
portion of the first reinforcement portion 1 of FIG. 2A. A width
W20 of a lower end portion of the second reinforcement portion 2 is
smaller than a width W21 of an upper end portion of the second
reinforcement portion 2. A width W30 of a lower end portion of the
third reinforcement portion 3 is smaller than a width W31 of an
upper end portion of the third reinforcement portion 3. A width W40
of a lower end portion of the fourth reinforcement portion 4 is
smaller than a width W41 of an upper end portion of the fourth
reinforcement portion 4.
[0120] According to embodiment, the plurality of holes H faces the
upper end portion of each of the first to fourth reinforcement
portions 1 to 4. The lateral and medial eyelet stays 7L and 7M are
each provided with four or more of the holes H.
[0121] At each of the reinforcement portions 1 to 4, the width of
the lower end portion is preferably from about 30 to about 97%,
more preferably, from about 35 to about 95%, most preferably, from
about 50 to about 85% of the width of the upper end portion.
[0122] Each of the reinforcement portions 1 to 4 of FIGS. 2A and 2B
preferably extends in a direction substantially parallel to a
direction in which tightening force acts to be applied by using the
shoelace 6 passed through the holes H. Specifically, the direction
in which each of the reinforcement portions 1 to 4 extends may
preferably be set so as to be substantially parallel to a pulling
direction in which force Fo resulting from the shoelace 6 indicated
by alternate long and two short dashed lines of FIG. 11 acts on the
holes H. The position and shape of a reinforcement member to work
effectively for enhancing a fit should be determined based on a way
in which tightening force acts.
[0123] Referring to FIGS. 2A and 2B, the reinforcement portions 1
to 4 have a virtual center line C1, a virtual center line C2, a
virtual center line C3, and a virtual center line C4 extending in
respective directions agreeing with directions in which
corresponding ones of the reinforcement portions 1 to 4 extend. If
each of the aforementioned width is hard to measure in the
alignment direction of the plurality of holes H, each of the width
can be measured in a direction perpendicular to a corresponding one
of the center lines C1 to C4.
[0124] The center lines C1 to C4 along the directions in which the
reinforcement portions 1 to 4 extend respectively extend in a
diagonally rearward and downward direction toward the sole 8. An
angle K4 of FIG. 2B formed between the center line C4 of the fourth
reinforcement portion 4 and the sole 8 is smaller than an angle K1
and an angle K2 of FIG. 2A formed between the center lines C1 and
C2 along the directions in which the first and second reinforcement
portions 1 and 2 extend, respectively, and the sole 8. The angle K4
formed between the center line C4 of the fourth reinforcement
portion 4 and the sole 8 is smaller than an angle K3 formed between
the center line C3 of the third reinforcement portion 3 and the
sole 8.
[0125] If a surface of the sole 8 is a horizontal surface or nearly
a horizontal surface, the angles K1 to K4 can be angles formed
between each of the center lines C1 to C4 and the surface of the
sole 8. If the surface of the sole 8 is curved largely or has
irregularities, the angles K1 to K4 are measured between each of
the center lines C1 to C4 and the horizontal line.
[0126] Referring to FIGS. 2A and 2B, a line 10, a line 20, a line
30, and a line 40 along front edges of the reinforcement portions 1
to 4 respectively are placed in forward leaning postures. Further,
a line 21, a line 31, and a line 41 along rear edges of the second
to fourth reinforcement portions 2 to 4 respectively are placed in
forward leaning postures.
[0127] The line 41 along the rear edge of the fourth reinforcement
portion 4 is more leaning forward than the line 21 along the rear
edge of the second reinforcement portion 2. A lower end 4E of the
line 41 along the rear edge of the fourth reinforcement portion 4
is placed posterior to a lower end 2E of the line 21 along the rear
edge of the second reinforcement portion 2.
[0128] Thus, the fourth reinforcement portion 4 covers a front
portion of a lower portion of a calcaneal bone BC from a side
surface and an area of the calcaneal bone BC covered by the fourth
reinforcement portion 4 is larger than an area of the calcaneal
bone BC covered by the second reinforcement portion 2. In some
cases, no portion of the calcaneal bone BC is covered by the second
reinforcement portion 2.
[0129] The upper U of FIG. 2A includes a lateral-side soft region
LS in which the member forming the sock 5 is exposed. The
lateral-side soft region LS is defined between the first and second
reinforcement portions 1 and 2 on the lateral-side surface.
Likewise, the upper U of FIG. 2B includes a medial-side soft region
MS in which the member forming the sock 5 is exposed. The
medial-side soft region MS is defined between the third and fourth
reinforcement portions 3 and 4 on the medial-side surface.
[0130] The area of the medial-side soft region MS is larger than
the area of the lateral-side soft region LS of FIG. 2A.
[0131] Other embodiments will be described next.
[0132] The following description of the embodiments is mainly
intended for differences from the second embodiment.
[0133] According to a first embodiment shown in FIGS. 1A and 1B,
the fourth reinforcement portion 4 is not provided.
[0134] According to the first embodiment, the lateral-side soft
region LS of FIG. 1A means a region in which the member forming the
sock 5 is exposed. This region is defined between two virtual lines
VL extended downwardly, one from a most anterior F one H of the
plurality of holes H through which the shoelace 6 passes and the
other from a most posterior R one H of the plurality of holes H in
the lateral eyelet stay 7L along the lateral-side surface and along
a vertical plane. On the other hand, the medial-side soft region MS
of FIG. 1B means a region in which the member forming the sock 5 is
exposed. This region is defined between two virtual lines extended
downwardly, one from a most anterior F one H of the plurality of
holes H through which the shoelace 6 passes and the other from a
most posterior R one H of the plurality of holes H in the medial
eyelet stay 7M along the lateral-side surface and along a vertical
plane. According to this embodiment, the area of the medial-side
soft region MS is also larger than the area of the lateral-side
soft region LS.
[0135] According to a third embodiment shown in FIGS. 3A and 3B,
the widths of the reinforcement portions 1 to 4 on the lateral side
and medial side are larger than the corresponding widths of the
reinforcement portions of the aforementioned second embodiment.
[0136] According to a fourth embodiment of FIGS. 4A and 4B, as
shown in FIG. 4B, the medial eyelet stay 7M is provided with a cut
off (notch) 7N to interrupt (intercept) the continuity of the
medial eyelet stay 7M.
[0137] FIGS. 4A and 4B show a different standard for the
aforementioned "width of a reinforcement portion." Specifically, as
illustrated in FIGS. 4A and 4B, each of the widths of the
reinforcement portions 1 to 4 including W10, W11, . . . , W40, and
W41 means a width in a direction perpendicular to a corresponding
one of the center lines C1 to C4.
[0138] For example, the width W41 of the upper end portion of the
fourth reinforcement portion 4 means a distance W41 between two
leader lines parallel to the center line C4. On the other hand, the
width W40 of the lower end portion of the fourth reinforcement
portion 4 means a distance W40 between two leader lines parallel to
said center line C4.
[0139] The upper includes the lateral-side soft region LS in which
the member forming the sock 5 is exposed. The lateral-side soft
region LS is defined between two virtual lines extended downwardly,
one from a part corresponding to a front end of a ball O5 of the
little toe and the other from a part corresponding to a rear end of
a lateral malleolus AL in the lateral edge portion 7L, along the
lateral-side surface and along a vertical plane.
[0140] The upper includes the medial-side soft region MS in which
the member forming the sock 5 is exposed. The medial-side soft
region MS is defined between two virtual lines extended downwardly,
one from a part corresponding to a front end of a ball O1 of a big
toe and the other from a part corresponding to a rear end of a
medial malleolus AM in the medial edge portion 7M, along the
medial-side surface and along a vertical plane.
[0141] The area of the medial-side soft region MS is larger than
the area of the lateral-side soft region LS.
[0142] According to a fifth embodiment of FIGS. 5A and 5B, as shown
in FIG. 5B, the medial eyelet stay 7M is provided with a cut off 7N
formed between the third and fourth reinforcement portions 3 and 4
to interrupt the continuity of the medial eyelet stay 7M and
continuity between the third and fourth reinforcement portions 3
and 4.
[0143] According to a sixth embodiment of FIGS. 6A and 6B, as shown
in FIG. 6B, the medial eyelet stay 7M is provided with a plurality
of cuts off 7N to interrupt the continuity of the medial eyelet
stay 7M and continuity between the third and fourth reinforcement
portions 3 and 4.
[0144] A test conducted to verify the effect of the present
invention will be described next.
[0145] Before the test, a shoe according to Comparative Example
shown in FIGS. 12A and 12B not including a reinforcement member on
both of a medial side and a lateral side of the shoe was prepared.
A reinforcement member was attached to an upper of this Comparative
Example to prepare a shoe according to Test Example 1 of FIGS. 1A
and 1B, a shoe according to Test Example 2 of FIGS. 2A and 2B, and
a shoe according to Test Example 3 of FIGS. 3A and 3B. Further, the
medial eyelet stay 7M according to each of Test Examples 2 and 3
was partially cut off to prepare a shoe according to Test Example 4
of FIGS. 4A and 4B, a shoe according to Test Example 5 of FIGS. 5A
and 5B, and a shoe according to Test Example 6 of FIGS. 6A and
6B.
[0146] Then, a plurality of test subjects worn each of the shoes
according to each of the aforementioned Examples and formed a state
of tightening with a lace like in the general case of wearing a
shoe by each test subject, specifically, a state indicated by
virtual lines of FIG. 12C. Immediately thereafter, each test
subject formed a state indicated by solid lines of FIG. 12C by
applying tightening force using a shoelace larger than that applied
in the general case. The amount of displacement of the upper in a
direction normal to the surface of the upper U of each of Examples
was measured in these states and the measured amounts were
expressed in terms of numerical values. The bar graph of FIG. 13
shows the result of the measurement.
[0147] A smaller amount of the aforementioned measured displacement
can be considered to show a better fit for a wearer achieved in the
general state of tightening with a lace. In the bar graph of FIG.
13, a better fit is expressed by a larger value.
[0148] As understood from Comparative Example and Examples 1 to 3
of FIG. 13, regarding a lateral side L of a foot, a larger area of
a reinforcement member achieves a better fit. This is considered to
be for the reason that, as the lateral side L of the foot is formed
of a relatively gentle slope surface of mild irregularities, a
high-rigidity reinforcement member tightly conforms to the surface
of the lateral side L of the foot.
[0149] On the other hand, as understood from Comparative Example
and Examples 1 and 2, regarding a medial side M of a foot, a better
fit is achieved with increase in the area of a reinforcement member
to some extent. However, as understood from a comparison between
Example 2 of FIG. 2B and Example 3 of FIG. 3B, a fit shown in FIG.
13 exhibits substantially no change even if the area of a
reinforcement member is large. This is considered to be for the
reason that, as a bone protrudes inwardly in a range from a base of
a first metatarsal bone B11 to a navicular bone BS of FIG. 2 on the
medial side M of the foot, it becomes difficult to achieve a fit
with the surface of the medial side M of the foot if a
high-rigidity reinforcement member has an excessively large
area.
[0150] As understood from comparisons of Examples 2 and 3 to
Examples 4 to 6 of FIG. 13, a better fit is achieved on the medial
side M with the medial eyelet stay 7M cut into an anterior portion
and a posterior portion.
[0151] Other embodiments will be described next on the basis of the
aforementioned test result.
[0152] According to embodiments shown in FIGS. 7B to 9B, a through
hole is formed at a portion of one of the reinforcement portions 1
to 4 in a medial and/or lateral side of the foot to form a small
soft region SS in which the sock 5 is exposed. In these cases, it
may be possible to reduce a weight further. Meanwhile, slight
change may be caused in terms of a fit.
[0153] The following describes how the aforementioned widths
including W10, W11, . . . , W40, and W41 should be understood in
the presence of the soft region SS resulting from a through hole
formed at a portion of one of the reinforcement portions 1 to
4.
[0154] As shown in FIG. 7B, if the soft region SS is provided at a
lower end portion, a substantial width at the lower end portion
becomes smaller than the width W30 or W40. In this case, the widths
W30 and W40 at the lower end portions should be determined based on
the lines 30 and 40 along the front edges and the lines 31 and 41
along the rear edges.
[0155] As shown in FIG. 8B, if the soft region SS is provided at an
upper end portion and the soft region SS has a relatively small
area, a substantial width at the upper end portion may become
smaller than the width W31 or W41. However, in the presence of the
small soft region SS, tightening force applied by using the
shoelace 6 may act locally on the sole 8 through the medial and
lateral eyelet stays 7M and 7L and the reinforcement portions 3 and
4.
[0156] In this case, the widths W31 and W41 at corresponding upper
end portions should be determined based on the line 30 along the
front edge and the line 31 along the rear edge, and the line 40
along the front edge and the line 41 along the rear edge.
[0157] In the embodiment shown in FIG. 9B, each of the
reinforcement portions 3 and 4 has such a shape as is formed by
arranging a pair of an anterior tape material and a posterior tape
material each having a given (constant) width in a substantially
V-pattern. In each of the reinforcement portions 3 and 4, the soft
region SS is formed to extend from an upper end portion to a lower
end portion.
[0158] In this case, determination should also be made as to how
tightening force applied by using the shoelace 6 acts.
Specifically, referring to FIG. 9B, the reinforcement portions 3
and 4 have a site 32 and a site 42 respectively at the
corresponding top (uppermost) ends where the reinforcement portions
3 and 4 are narrowed downwardly, compared to the medial eyelet stay
7M. In this way, tightening force applied by using the shoelace 6
will be transmitted from the eyelet stay 7M through the sites 32
and 42 and then act on the reinforcement portions 3 and 4 each
having the given width.
[0159] Thus, in this case, the widths W30 and W40 at the lower end
portions and the widths W31 and W41 at the upper end portions
should also be determined based on the lines 30 and 40 along the
front edges and the lines 31 and 41 along the rear edges.
[0160] According to the embodiment shown in FIG. 9A, a cut off is
provided at each of the lower end portions of the lateral first and
second reinforcement portions 1 and 2 to form a small soft region
SS. The first and second reinforcement portions 1 and 2 are placed
in an anterior position and a posterior position and continuous
with each other at their upper end portions and their central
portions viewed in a vertical direction.
[0161] In this case, tightening force will be transmitted from the
shoelace 6 engaged with the lateral eyelet stay 7L at a front
portion to the upper U through the first reinforcement portion 1.
Meanwhile, tightening force will be transmitted from the shoelace 6
engaged with the lateral eyelet stay 7L at a rear portion to the
upper U through the second reinforcement portion 2.
[0162] Specifically, the first and second reinforcement portions 1
and 2 are required only to be separated from each other at least at
their lower end portions as an anterior portion and a posterior
portion, and can be continuous with each other at their upper end
portions.
[0163] In this case, the widths W10, W11, W20, and W21 should be
determined by setting a virtual line VL2 at which the first and
second reinforcement portions 1 and 2 are separated and by
employing the same way as the aforementioned way described by
referring to FIG. 9B.
[0164] Referring to FIG. 8A, the first and second reinforcement
portions 1 and 2 are completely continuous with each other in an
anterior-posterior direction. In this case, as understood from the
aforementioned result of FIG. 13, a fit may also be enhanced on the
lateral side L of a foot. According to this embodiment, while the
first and second reinforcement portions 1 and 2 are continuous with
each other, the third reinforcement portion 3 of FIG. 8B has the
width W30 at the lower end portion thereof smaller than the width
W31 at the upper end portion thereof. Thus, this embodiment is also
included in the present invention.
[0165] The aforementioned description of the embodiments is
intended for regions where the medial and lateral eyelet stays 7M
and 7L are provided. Meanwhile, in many cases, a toe portion and a
heel portion of the upper U are provided with a reinforcement
member 51, a reinforcement member 52, a reinforcement member 53,
and a reinforcement member 54 as shown in FIG. 10A or 10B, or a
heel counter. In such a case, as shown by virtual lines VL3, the
front edge lines and the rear edge lines of the reinforcement
portions 1 to 4 should be set by extending some of lines.
[0166] An embodiment shown in FIGS. 14A and 14B includes a heel
counter 9. In the illustrations of these drawings, the
reinforcement portions 1 to 4 are given regular dots and the heel
counter 9 is hatched. According to this embodiment, the anterior
first and third reinforcement portions 1 and 3 extend to the
midsole 81. The second reinforcement portion 2 of FIG. 14A extends
to the midsole 81 or the heel counter 9. The fourth reinforcement
portion 4 of FIG. 14B does not reach the midsole 81 but it extends
to the heel counter 9.
[0167] The second reinforcement portion 2 and/or the fourth
reinforcement portion 4 may extend to the midsole (sole) 81 while
being caught (sandwiched) between the heel counter 9 and the sock
5.
[0168] According to this embodiment, the first and second
reinforcement portions 1 and 2 of FIG. 14A are formed into a loop
pattern. Further, the third and fourth reinforcement portions 3 and
4 of FIG. 14B are formed into a loop pattern.
[0169] Like in this embodiment, if a reinforcement portion(s) is
(are) formed into a loop pattern, the width of each reinforcement
portion at an upper end portion thereof and that of each
reinforcement portion at a lower end portion thereof should be
determined by leaving out an upper edge extending in an
anterior-posterior direction along the eyelet stays 7L and 7M and a
lower edge extending in the anterior-posterior direction along the
sole or the heel counter 9.
[0170] According to this embodiment, a tape material T to exhibit
substantially no stretching properties in response to the external
force generated during wearing may be stacked on the
hard-to-stretch reinforcement portions 1 to 4 having (forming) a
loop pattern.
[0171] The heel counter 9 may include: a base 9B made of
low-rigidity artificial leather; and a resin layer 9P having higher
rigidity than the base 9B and adhesively stacked on the base 9B.
Like in this embodiment, the midsole 81 may have a plurality of
layers.
[0172] The preferred embodiments have been described above by
referring to the drawings. A person with ordinary skill in the art
who has read this specification will easily think of various
changes and modifications within an obvious range.
[0173] For example, a sole placed under an upper may include only
an outsole. The upper may be a high-top upper, not a low-top
upper.
[0174] Each reinforcement member may be attached fixedly to a sock
by means of paste, adhesion, sewing, or adhesion and sewing.
[0175] Thus, such changes and modifications are deeded to fall
within the scope of the present invention defined by the appended
claims.
INDUSTRIAL APPLICABILITY
[0176] The present invention is applicable to a shoe having a
lace-tightening structure using a shoelace and additionally, to a
shoe having a fastening structure achieved by a fastening member
such as a shoelace or a belt (belts).
REFERENCE SIGNS LIST
[0177] 1: First reinforcement portion [0178] 2: Second
reinforcement portion 2E: Lower end 20: Line along front edge 21:
Line along rear edge [0179] 3: Third reinforcement portion 30: Line
along front edge 31: Line along rear edge [0180] 4: Fourth
reinforcement portion 4E: Lower end 40: Line along front edge 41:
Line along rear edge [0181] T: Tape material [0182] 5: Sock 5E:
Edge 50: Opening [0183] 6: Shoelace [0184] 7L: Lateral eyelet stay
7M: Medial eyelet stay 7N: Cut off [0185] 8: Sole 80: Outsole 81:
Midsole [0186] 9: Heel counter [0187] LS, MS, SS: Soft region
[0188] BC: Calcaneal bone BS: Navicular bone B50: Fifth proximal
phalanx B51: Fifth metatarsal bone [0189] O1: Ball of a big toe C1
to C4: Center line [0190] F: Anterior R: Posterior K1 to K4: Angle
U: Upper [0191] VL: Virtual line [0192] W10, S11, W20, W21, W30,
W31, W40, W41: Width
* * * * *