U.S. patent application number 14/612828 was filed with the patent office on 2015-05-28 for multi-function shoe pad.
The applicant listed for this patent is Hsien-Hsiung CHENG. Invention is credited to Hsien-Hsiung CHENG.
Application Number | 20150143713 14/612828 |
Document ID | / |
Family ID | 43857759 |
Filed Date | 2015-05-28 |
United States Patent
Application |
20150143713 |
Kind Code |
A1 |
CHENG; Hsien-Hsiung |
May 28, 2015 |
MULTI-FUNCTION SHOE PAD
Abstract
A multi-function shoe pad is composed of a main body for a
user's human sole to tread. The main body includes a hollow bulge
integrally protruding toward a top side thereof and from a bottom
side in such way that a chamber is formed below the hollow bulge.
The chamber is deformable between a compressed state and an
uncompressed state, so the hot air inside the chamber can exhaust
and the cold air can be sucked into the chamber to enhance the air
convection inside the user's shoe. Besides, the hollow bulge can
allow the user's foot to tightly cling to the shoe to enable the
shoe pad to be skidproof.
Inventors: |
CHENG; Hsien-Hsiung; (Taipei
City, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
CHENG; Hsien-Hsiung |
Taipei City |
|
TW |
|
|
Family ID: |
43857759 |
Appl. No.: |
14/612828 |
Filed: |
February 3, 2015 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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13011524 |
Jan 21, 2011 |
|
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14612828 |
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Current U.S.
Class: |
36/43 |
Current CPC
Class: |
A43B 17/03 20130101;
A43B 7/223 20130101; A43B 7/143 20130101; A43B 7/141 20130101; A43B
7/142 20130101; A43B 7/149 20130101; A43B 7/144 20130101; A43B
7/1435 20130101; A43B 7/1425 20130101; A43B 13/40 20130101; A43B
7/1485 20130101; A43B 17/08 20130101; A43B 7/1445 20130101; A43B
17/02 20130101; A43B 13/41 20130101; A43B 7/145 20130101 |
Class at
Publication: |
36/43 |
International
Class: |
A43B 13/40 20060101
A43B013/40 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 22, 2010 |
TW |
99101857 |
Jul 15, 2010 |
TW |
99123342 |
Aug 31, 2010 |
CN |
201010271745.3 |
Claims
1. A multi-function shoe pad comprising a single layer main body,
which can allow a user's human sole to tread and structurally
corresponds to respective portions of the user's human sole to be
composed of a foot arch portion, a heel portion located behind the
foot arch portion, a toe portion located before the foot arch
portion and corresponding to the user's first, second, third,
fourth, and fifth toes, and a metatarsus portion located between
the foot arch portion and the toe portion, the foot arch portion
having an internal foot-arch portion and an external foot-arch
portion, the toe portion having an internal toe portion
corresponding to the first toe and an external toe portion
corresponding to the other toes of the user's foot, the metatarsus
portion having an internal metatarsus portion and an external
metatarsus portion; wherein the shoe pad is characterized in: the
single layer main body having a hollow bulge, the hollow bulge
having an external convex surface integrally protruding from a top
side of the single layer main body, an internal concave surface
integrally recessed from a bottom side of the single layer main
body and corresponding to the external convex surface, and a
chamber defined by the internal concave surface, the chamber being
deformable between a compressed state and an uncompressed state;
wherein the single layer main body further comprises another hollow
bulge located at at least one of the heel portion, the metatarsus
portion, and the toe portion and having an external convex surface
integrally protruding from a top side of the single layer main
body, an internal concave surface integrally recessed from a bottom
side of the single layer main body and corresponding to the
external convex surface, and a chamber defined by the internal
concave surface, the chamber being deformable between a compressed
state and an uncompressed state.
2. The shoe pad as defined in claim 1, wherein the single layer
main body further comprises another hollow bulge located at the
external foot-arch portion.
3. The shoe pad as defined in claim 1, wherein the single layer
main body further comprises another hollow bulge located at at
least one of the heel portion, the internal metatarsus portion, the
external metatarsus portion, the internal toe portion, and the
external toe portion and having an external convex surface
integrally protruding from a top side of the single layer main
body, an internal concave surface integrally recessed from a bottom
side of the single layer main body and corresponding to the
external convex surface, and a chamber defined by the internal
concave surface, the chamber being deformable between a compressed
state and an uncompressed state.
4. The shoe pad as defined in claim 3, wherein the single layer
main body further comprises another hollow bulge located at the
external foot-arch portion.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates generally to footwear, and
more particularly, to a multi-function shoe pad.
[0003] 2. Description of the Related Art
[0004] As disclosed in Taiwan Patent No. M307982 entitled "Compound
Walking Shoe Pad" and No. M325753 entitled "Ergonomic Shoe Pad" and
China Utility Model Pub. No. 2759247 entitled "Ergonomic Foot-arch
Shoe Pad", the feature of each lies in that the shoe pad includes
one or more rigid solid protrusions corresponding to specific
positions of a human foot sole, like toe section, internal
arch-foot section, or transverse-arch section, for allowing the
shoe pad to conform to human feet ergonomics for average
distribution of pressure applied to the feet, thus maintaining body
balance, correcting standing posture, and relieving sore feet
resulting from long standing. However, a user making use of such
shoe pad for a long time can become dependent on it in such a way
that the user may not be erect while making use of the common shoe
pad. Besides, as indicated in the aforesaid Taiwan Patent No.
M307982, the solid protrusions are additionally mounted to the main
body of the shoe pad to cause complicated production procedure and
after long-term use, the protrusions likely disengages from the
main body.
SUMMARY OF THE INVENTION
[0005] The primary objective of the present invention is to provide
a multi-function shoe pad, which is skidproof and can cause air
convection.
[0006] The secondary objective of the present invention is to
provide a multi-function shoe pad, which remind and alert the user
to correct his or her standing posture.
[0007] Another objective of the present invention is to provide a
multi-function shoe pad, which can enhance resilience and shock
absorption.
[0008] The foregoing objectives of the present invention are
attained by the multi-function shoe pad having a main body.
Structurally corresponding to respective portions of the user's
sole, the main body is composed of a foot arch portion, a heel
portion located behind the foot arch portion, a toe portion located
before the foot arch portion and corresponding to the user's first,
second, third, fourth, and fifth toes, and a metatarsus portion
located between the foot arch portion and the toe portion. The foot
arch portion includes an internal foot-arch portion and an external
foot-arch portion. The toe portion includes an internal toe portion
corresponding to the first toe and an external toe portion
corresponding to the other toes of the user's foot. The metatarsus
portion includes an internal metatarsus portion and an external
metatarsus portion. The multi-function shoe pad is characterized in
that the main body includes a (first) hollow bulge having an
external convex surface integrally protruding from a top side
thereof, an internal concave surface integrally recessed from a
bottom side thereof and corresponding to the external convex
surface, and a chamber formed between the bottom side of the main
body and the internal concave surface. The chamber is deformable
between a compressed state and an uncompressed state.
[0009] The hollow bulge of the multi-function shoe pad is forced by
the user's sole, while the user is walking, to enable the
compressed state of the chamber to further exhaust the hot air
inside the chamber. After the hollow bulge is repristinated due to
its resilience to enable the uncompressed state of the chamber, the
air pressure inside the chamber is less than that of the shoe. In
this way, the cold air inside the shoe can be sucked into the
chamber and thus cyclical air convection is generated. Therefore,
the shoe pad of the present invention is effectively ventilative,
not subject to generation of malodor, and to keep the user's sole
dry to enhance the comfortableness for the user feet. Besides, the
bulge allows tight contact between the human toes and the shoe pad
for skidproof function.
[0010] Further, the multi-function shoe pad includes an (first) air
groove longitudinally extending along a midst of the internal and
external toe portions from a front peripheral edge adjacent to the
toe portion toward the heel portion for communication with the
chamber in such a way that the efficiency of exhaust of hot air and
suction of cold air can be enhanced.
[0011] Further, the air groove includes a narrow portion in
communication with the chamber and the air groove. When the chamber
is compressed, the hot air therein passing through the narrow
portion can be pressurized thereby to dash into the air groove to
enhance the efficiency of exhaust of the hot air.
[0012] Further, the air groove includes an internal concave
aperture formed at a front peripheral edge thereof adjacent to the
toe portion for preventing the peripheral edge of the shoe pad from
tightly clinging to the internal wall of the shoe in such a way
that the amount of the hot-air exhaust and the cold-air suction can
be increased.
[0013] Further, the main body of the shoe pad includes another
(second) air groove in communication with the aforesaid air groove.
The second air groove transversally extends along the midst of the
toe portion and the metatarsus portion from an external peripheral
edge of adjacent to the external toe portion toward an internal
peripheral edge thereof adjacent to the internal toe portion and
includes a concave aperture formed at an external or internal
peripheral edge adjacent to the midst of the toe portion and the
metatarsus portion. Alternatively, the second air groove
transversally extends along the midst of the metatarsus portion and
the foot arch portion from an external peripheral edge of the main
body toward an internal peripheral edge of the main body and
includes a concave aperture formed at an external or internal
peripheral edge adjacent to the midst of the metatarsus portion and
the foot arch portion.
[0014] Further, the internal foot-arch portion includes an
arc-shaped convex portion protruding from the bottom side of the
main body and having an arc-shaped top side and an arc-shaped
bottom side. The hollow bulge is preferably located at the heel
portion or the arc-shaped convex portion. When the hollow bulge is
located at the arc-shaped convex portion, the external convex
surface of the hollow bulge is integrally formed from the
arc-shaped top side. The internal concave surface is integrally
formed from the arc-shaped bottom side. In light of this, the shoe
pad can softly support the user's sole by the hollow bulge located
at the internal foot-arch portion and remind the user to pay
attention to his or her standing posture at any time for correcting
the standing posture.
[0015] Further, the multi-function shoe pad includes another
(second) hollow bulge composed of an external convex surface
integrally protruding from the top side of the main body, an
internal concave surface integrally recessed from the bottom side
of the main body and corresponding to the external convex surface,
and a chamber formed between the internal concave surface and the
insole of the shoe. The chamber of the second hollow bulge is
deformable between a compressed state and an uncompressed state.
When the heel portion includes the first hollow bulge, the second
hollow bulge is located at at least one of the internal foot-arch
portion, the external foot-arch portion, the metatarsus portion,
and the toe portion or at at least one of the internal foot-arch
portion, the external foot-arch portion, the internal metatarsus
portion, the external metatarsus portion, the internal toe portion,
and the external toe portion. Similarly, when the arc-shaped convex
portion has the first hollow bulge, the second hollow bulge is
located at at least one of the heel portion, the external foot-arch
portion, the metatarsus portion, and the toe portion or at at least
one of the heel portion, the external foot-arch portion, the
internal metatarsus portion, the external metatarsus portion, the
internal toe portion, and the external toe portion.
[0016] Further, the multi-function shoe pad includes a
shock-absorbing material and/or an elastic material, which is
mounted to the chamber of the second hollow bulge. Preferably, the
elastic material is mounted inside the chamber of the hollow bulge
at the metatarsus portion or inside the chamber of at least one of
the hollow bulges at the internal and external metatarsus portions.
The shock-absorbing material is mounted inside the chamber of the
hollow bulge located at the heel portion.
[0017] Further, the multi-function shoe pad includes at least one
support member mounted below the hollow bulge and having a convex
wall and an air space located at an internal side of the convex
wall. In light of this, the support member can effectively keep the
height of the hollow bulge.
[0018] Further, the multi-function shoe pad includes a plurality of
support members, among which some are located below the hollow
bulge of the heel portion, the internal foot-arch portion, or the
external foot-arch portion and further include a nozzle
communicating with the air space, the convex wall of each bulge
tightly clinging to the internal concave surface of the hollow
bulge, the nozzle of each support member in communication with the
air groove and the air space, and some are located below the hollow
bulge of the metatarsus portion (or the internal and external
metatarsus portions) or the toe portion (or the internal and
external toe portions) further include a bottom wall in connection
with the convex wall in one piece for sealing the air space, the
bottom wall of each support member is stopped against the insole of
the shoe.
[0019] Further, the multi-function shoe pad includes at least two
support members and a coupling piece integrally connected between
the at least two support members.
[0020] Alternatively, the multi-function shoe pad also includes the
main body for tread of the human sole. The main body is composed of
the foot arch portion, the heel portion, the toe portion, and the
metatarsus portion. The foot arch portion also includes the
internal foot-arch portion and the external foot-arch portion. The
metatarsus portion also includes the internal metatarsus portion
and the external metatarsus portion. It is characterized in that
the main body includes a first layer and a second layer mounted on
the first layer. The first layer has a hollow bulge. The hollow
bulge has an external convex surface integrally protruding from the
first layer, an internal concave surface recessed from a bottom
side of the first layer and corresponding to the external convex
surface, and a chamber formed between the internal concave surface
and the insole of the shoe. The chamber is deformable between a
compressed state and an uncompressed state. The second layer has a
hollow bulge having an external convex surface integrally
protruding from the second layer, an internal concave surface
recessed from a top side of the second layer and corresponding to
the external convex surface, and a sealed chamber jointly defined
by the internal concave surface and the top side of the first
layer.
[0021] Because the hollow bulge has the sealed chamber, the shoe
pad provides more bouncing force. If it is intended to enhance the
bouncing force and/or shock absorbability, the elastic or
shock-absorbing material can be mounted to the sealed chamber.
BRIEF DESCRIPTION OF THE DRAWINGS
[0022] FIG. 1 is a perspective view of a first preferred embodiment
of the present invention.
[0023] FIG. 2 is a bottom view of the first preferred embodiment of
the present invention, illustrating that the hollow bulge
corresponds to the heel of the human sole.
[0024] FIG. 3 is a sectional view taken along a line 3-3 indicated
in FIG. 1.
[0025] FIG. 4 is a bottom view of another pattern of the first
preferred embodiment of the present invention.
[0026] FIG. 5 is a perspective view of another pattern of the first
preferred embodiment of the present invention.
[0027] FIG. 6 is similar to FIG. 5, illustrating that the hollow
bulges correspond to respective portion of the human sole.
[0028] FIG. 7 is a top view of a second preferred embodiment of the
present invention.
[0029] FIG. 8A is a sectional view of the second preferred
embodiment of the present invention, showing the hollow bulge
located at the internal foot-arch portion.
[0030] FIG. 8B is similar to FIG. 8A, showing another pattern of
the hollow bulge located at the internal foot-arch portion.
[0031] FIG. 9 is a perspective view of a third preferred embodiment
of the present invention.
[0032] FIG. 10 is a bottom view of the third preferred embodiment
of the present invention, illustrating that the hollow bulges
correspond to respective portion of the human sole.
[0033] FIG. 11 is a sectional view taken along a line 11-11 of FIG.
9.
[0034] FIG. 12 is a perspective view of another pattern of the
third preferred embodiment of the present invention.
[0035] FIG. 13 is a bottom view of FIG. 12, illustrating that the
hollow bulges correspond to respective portion of the human
sole.
[0036] FIG. 14 is a sectional view of a fourth preferred embodiment
of the present invention.
[0037] FIG. 15A is similar to FIG. 13, illustrating that the shoe
pad includes the support members.
[0038] FIG. 15B is similar to FIG. 13, illustrating that the shoe
pad includes another support members.
[0039] FIG. 16 is a sectional view of a part of the fourth
preferred embodiment of the present invention, showing the support
member.
[0040] FIG. 17 is another sectional view of a part of the fourth
preferred embodiment of the present invention, showing another
pattern of the support member.
[0041] FIG. 18 is a sectional view of another pattern of the fourth
preferred embodiment of the present invention.
[0042] FIG. 19 is a sectional exploded view of another pattern of
the fourth preferred embodiment of the present invention,
illustrating that the coupling piece is connected with the support
members in one piece.
[0043] FIG. 20 is a perspective view of another pattern of the
fourth preferred embodiment of the present invention, illustrating
that the hollow bulge has a reinforcement recession.
[0044] FIG. 21 is similar to FIG. 20, illustrating that the hollow
bulge has a plurality of reinforcement recessions.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
[0045] First of all, it is to be noted that the same reference
signs in the following embodiments refer to identical or similar
elements or structures.
[0046] Referring to FIG. 1, a multi-function shoe pad 1 constructed
according to a first preferred embodiment of the present invention
comprises a main body 10.
[0047] The main body 10 is made of not limited to PU foamed
material with resilience. The main body 10 can be made of
alternative material, such as cloth, fur, cork, latex, or TPR. As
shown in FIGS. 1-2, the main body 10 is provided for tread of the
human sole 4 composed of a foot arch section 41 having an internal
foot-arch part 41a and an external foot-arch part 41b; a heel
section 43 located behind the foot arch section 41; a toe section
45 located before the foot arch section 41 and having a first toe
451, a second toe 452, a third toe 453, a fourth toe 454, and a
fifth toe 455; and a metatarsus section 47 having an internal
metatarsus part 47a and an external metatarsus part 47b. The main
body 10 includes a foot arch portion 12 corresponding to the foot
arch section 41, an internal foot-arch portion 12a corresponding to
the internal foot-arch part 41a, an external foot-arch portion 12b
corresponding to the extern foot-arch part 41b, a heel portion 14
corresponding to the heel section 43, a toe portion 16
corresponding to the toe section, an internal toe portion 15a
corresponding to the first toe 451, an external toe portion 15b
corresponding to the other toes 452-455, a metatarsus portion 18
corresponding to the metatarsus section 47, an internal metatarsus
portion 18a corresponding to the internal metatarsus section 47a,
and an external metatarsus portion 18b corresponding to the
external metatarsus portion 47b.
[0048] The main body 10 includes a first hollow bulge 111 formed on
a top side 11 thereof and located at the heel portion 14. Referring
to FIG. 3, the first hollow bulge 111 includes an external convex
surface 111a integrally protruding from the top side 11, an
internal concave surface 111b integrally recessed from a bottom
side 13 of the main body 10, and a first chamber 15 formed between
the internal concave surface 111b and the insole of a shoe for
deformation between a compressed state and uncompressed state.
[0049] When the shoe pad 1 is actually used, as the heel portion 14
is forced, the first hollow bulge 111 can be squeezed downward to
enable the first chamber 15 to be compressed under the compressed
state; meanwhile, the hot air inside the first chamber 15 can be
squeezed out. On the contrary, when the first bulge 111 is
repristinated because no more external force is applied thereto,
the first chamber 15 is under the uncompressed state, the air
pressure of the first chamber 15 is less than that of the shoe,
such that the cold air inside the shoe can be sucked into the first
chamber 15. In this way, cyclic air convection is generated between
the bottom side 13 of the main body 10 and the inside of the
shoe.
[0050] Referring to FIG. 4, the multi-function shoe pad 1' of
another pattern in accordance with the first preferred embodiment
of the present invention also includes the first hollow bulge 111
formed at the top side 11 of the main body 10 and located at the
heel portion 14. The hollow bulge 111 also has the first chamber
15. The main body 10 further includes a first air groove 131 formed
at a bottom side thereof longitudinally extending along the midst
of the internal and external toe portions 16a and 16b from a front
peripheral edge 101 adjacent to the toe portion 16 toward the heel
portion 14 for communication with the first chamber 15. The first
air groove 131 has an arc-shaped aperture 102 located adjacent to
the front peripheral edge 101 and recessed inwardly. The aperture
102 prevents the peripheral edge of the main body 10 from tightly
clinging to the internal wall of the shoe to increase the amount of
exhaust of hot air and suction of the cold air.
[0051] When the shoe pad 1' is actually used, as the heel portion
14 is forced, the first chamber 15 can be squeezed under the
compressed state; meanwhile, the hot air inside the first chamber
15 can be squeezed out through the first air groove 131. On the
contrary, when the first bulge 111 is repristinated because no more
external force is applied thereto, the first chamber 15 is under
the uncompressed state and the cold air inside the shoe can be
sucked into the first chamber 15 through the first air groove 131.
In this way, the efficiency of the cyclic air convection between
the shoe pad 1' and the inside of the shoe can be enhanced via the
air groove.
[0052] Referring to FIGS. 5-6, a multi-function shoe pad 1'' of
another pattern in accordance with the first preferred embodiment
of the present invention also includes the first hollow bulge 111
formed at the top side 11 of the main body 10 and located at the
heel portion 14. The hollow bulge 111 also has the first chamber
15. The main body 10 further includes a first air groove 131', a
second air groove 132, a third air groove 133, and a fourth air
groove 134 at the bottom side 13 thereof. The first air groove 131'
is provided with a first extended part 131a extending
longitudinally along the midst of the internal and external toe
portions 16a and 16b from the front peripheral edge 101 adjacent to
the toe portion 16 toward the heel portion 14 and communicating
with the first chamber 15, a second extended part 131b
communicating with the first extended part 131a and transversally
extending to external and external peripheral edges 103 and 104
adjacent to the heel portion 14, and a narrow part 131c smaller
than the first air groove 131' and communicating with the second
extended part 131b and the first chamber 15. The first air groove
131' is provided with an arc-shaped aperture 102 formed at the
front peripheral edge 101 thereof adjacent to the toe portion 16
and recessed inwardly. The second air groove 132 communicates with
the first air groove 131' and transversally extends along the midst
of the toe portion 16 and the metatarsus portion 18 from the
external peripheral edge 103 adjacent to the external toe portion
16b to the internal peripheral edge 104 adjacent to the internal
toe portion 16a. The second air groove 132 is provided two
arc-shaped apertures 105, each of which is recessed inwardly and
formed at one of the internal and external peripheral edges 103 and
104 adjacent to the toe portion 16 and the metatarsus portion 18.
The third air groove 133 communicates with the first air groove
131' and transversally extends along the midst of the metatarsus
portion 18 and the foot-arch portion 12 from the external
peripheral edge 103 to the internal peripheral edge 104. The third
air groove 133 is provided two arc-shaped apertures 106, each of
which is recessed inwardly and formed at one of the internal and
external peripheral edges 103 and 104 adjacent to the metatarsus
portion 18 and the foot-arch portion 12. The fourth air groove 134
communicates with the third air groove 133 and extends along an
internal profile of the internal foot-arch portion 12a from the
third air groove 133 toward the heel portion 14.
[0053] When the shoe pad 1'' is actually used, as indicated above,
and the heel portion 14 is forced to compress the first chamber 15
(under the compressed state), the hot air inside the first chamber
15 can be pressurized, while passing through the narrow portion
131c, to dash into the first air groove 131' and then exhaust
through the second, third, and fourth air grooves 132-134 in
communication with the first air groove 131'. On the contrary, when
the heel portion 14 is not forced, the first hollow bulge 111 can
be repristinated to uncompress the first chamber 15 (under the
uncompressed state), the cold air inside the shoe can be sucked
through the first, second, third, and fourth air grooves 131'-134
into the first chamber 15.
[0054] It is to noted that where the first, second, third, and
fourth air grooves 131'-134 are mounted is based on how the human
sole 4 treads on the ground while the user is walking and thus when
the human sole 4 treads on the shoe pad 1'', they are not squashed
or deformed by the user's weight. Thus, even if the shoe pad 1'' is
used for a long time, the shoe pad 1'' can still keep effective air
convection.
[0055] Because the material and partitions of the shoe pad in the
following embodiment are identical to those of the first
embodiment, their detailed recitation except the differences
between the two embodiments is skipped.
[0056] Referring to FIGS. 7-8, a multi-function shoe pad 2 of a
second preferred embodiment of the present invention is composed of
a main body 20.
[0057] The internal foot-arch portion 12a includes an arc-shaped
convex portion 25 integrally protruding from a bottom side of the
main body 20 and having an arc-shaped top side 251, an arc-shaped
bottom side 253, and a hollow bulge 255. As shown in FIG. 8A, the
hollow bulge 255 includes an external convex surface 255a
integrally protruding from the top side 251 thereof, an internal
concave surface 255b integrally recessed from the bottom side 253
thereof, and a chamber 27 formed between the bottom side of the
main body 20 and the internal concave surface 255b. The chamber 27
is deformable between a compressed state and an uncompressed
state.
[0058] When the shoe pad 2 is actually used, it not only causes the
aforesaid air convection inside the shoe but softly supports the
user's sole to remind the user to watch his or her standing posture
at any time. The shoe pad 2 can correct the user's standing posture
after it is used for a long time.
[0059] It is to be noted that the external convex surface 255a can
be directly connected with the top side 21 of the main body 20, as
shown in FIG. 8A, or the arc-shaped convex portion 25 can have a
connection part 257 for connection between the external convex
surface 255a and the top side 21. Besides, the length of the
connection part 257 has none of any particular limitation.
[0060] Referring to FIGS. 9-11, a multi-function shoe pad 3
constructed according to a third preferred embodiment of the
present invention is composed of the main body 10
[0061] The main body 10 includes the first hollow bulge 111, a
second hollow bulge 112, a third hollow bulge 113, a fourth hollow
bulge 114, a fifth hollow bulge 115, and a six hollow bulge 116 at
the top side 11. The position and pattern of the first hollow bulge
111 are identical to those of the first embodiment. The second
hollow bulge 112 is located at the foot arch portion 12. The third
hollow bulge 113 is located at the internal metatarsus portion 18a.
The fourth hollow bulge 114 is located at the external metatarsus
portion 18b. The fifth hollow bulge 115 is located at the internal
toe portion 16a. The sixth hollow bulge 116 is located at the
external toe portion 16b. As shown in FIG. 11, each of the fifth
and sixth hollow bulges 115 and 116 includes an external convex
surface 115a(116a) integrally protruding from the top side 11 of
the main body 10, an internal concave surface 115b(116b) integrally
recessed from the bottom side 13 of the main body 10, and a fifth
chamber 17(19) formed between the internal concave surface
115b(116b). It is to be noted that the second, third, and fourth
hollow bulges 112-114 also include the aforesaid external convex
surfaces, internal concave surfaces, second, third, and fourth
chambers separately. In this way, the chambers of the first,
second, third, fourth, fifth, and sixth hollow bulges 111-116 are
deformable between the compressed state and the uncompressed
state.
[0062] When the shoe pad 3 is actually used, as the heel portion 14
is forced, the first hollow bulge 111 can be squashed to enable the
first chamber 15 to be compressed under the compressed state;
meanwhile, the hot air inside the first chamber 15 can be squeezed
out. When the external force applied to the heel portion 14 is
transferred to the foot arch portion 12, the second hollow bulge
112 is squashed to enable the second chamber (not shown) to be
under the compressed state to allow the hot air inside the second
chamber to exhaust. In the meantime, the first hollow bulge 111 is
repristinated because no more external force is applied thereto to
enable the first chamber 15 to be under the uncompressed state;
meanwhile, the air pressure of the first chamber 15 is less than
that of the shoe, such that the cold air inside the shoe can be
sucked into the first chamber 15. Similarly, when the external
force applied to the foot arch portion 12 is transferred to the
internal and external metatarsus portions 18a and 18b or to the
internal and external toe portions 16a and 16b, the hot air inside
the compressed chambers can exhaust and the cold air can be sucked
into the uncompressed chambers. In this way, cyclic air convection
is generated between the bottom side 13 of the main body 10 and the
inside of the shoe.
[0063] Referring to FIGS. 12 and 13, the shoe pad 3' of another
pattern in accordance with a third preferred embodiment of the
present invention includes a plurality of the hollow bulges, which
can be formed at the heel portion 14, the foot-arch portion 12, the
metatarsus portion 18, and the toe portion 16, and namely, a seven
bulge 117 is formed at the metatarsus portion 18 and an eighth
bulge 118 is formed at the toe portion 16. In other words, the
seventh bulge 117 is composed of the third and fourth hollow bulges
113 and 114 and the eighth bulge 118 is composed of the fifth and
six hollow bulges 115 and 116. In this way, the hot air inside the
chambers can also exhaust and the cold air inside the shoe is
sucked into the uncompressed chambers as where the external force
is applied is changed, such that the cyclic air convection is
generated between the bottom side 13 of the main body 13 and the
inside of the shoe.
[0064] It is to be noted that when the main body includes a
plurality of the hollow bulges in each of the aforesaid
embodiments, the shoe pad can further include at least one
shock-absorbing and/or elastic material mounted to at least one of
the hollow bulges to effectively enhance the user's bouncing force,
while the user intends to leap, and for shock absorption.
Preferably, the shock-absorbing material is mounted to the chamber
of the hollow bulge of the heel portion of the main body and the
elastic material is mounted to the chamber of the hollow bulge of
the metatarsus portion and/or the toe portion of the main body.
[0065] Referring to FIG. 14, a multi-function shoe pad 5 in
accordance with a fourth preferred embodiment of the present
invention includes a main body 50 and an elastic material 60.
[0066] The main body 50 includes a first layer 70 and a second
layer 80. The first layer 70 has a hollow bulge 711 formed at a top
side 71 thereof and corresponding to the heel portion 14 of the
main body 50. The hollow bulge 711 has an external convex surface
711a integrally protruding from the top side 71 of the first layer
70, an internal concave surface 711b integrally recessed from the
bottom side 73 of the first layer 70, and a chamber 75 formed
between the internal concave surface 711b and the insole of the
shoe for deformation between a compressed state and an uncompressed
state. The second layer 80 is fixed to the first layer 70 by not
limited to adhesion. The second layer 80 has a first hollow bulge
811 formed at a top side 81 thereof and corresponding to the heel
portion 14, a second hollow bulge 812 corresponding to the
metatarsus portion 18, and third hollow bulge 813 corresponding to
the toe portion 16. The first, second, third hollow bulges 811-813
have respective external convex surfaces 811a, 812a, and 813a
integrally protruding from the top side 81 of the second layer 80,
and respective internal concave surfaces 811b, 812b, and 813b
integrally recessed from a bottom side 83 of the second layer 80.
The first hollow bulge 811 of the second layer 80 is superimposed
on the hollow bulge 711 of the first layer 70 to allow the internal
concave surface 811b of the first hollow bulge 811 to tightly cling
to the external convex surface 711a of the hollow bulge 711. The
internal concave surfaces 812b and 813b of the second and third
hollow bulges 812 and 813 define a first sealed chamber 85 and a
second sealed chamber 87 with the top side 71 of the first layer 70
separately.
[0067] The elastic material 60 can enhance elasticity and in this
embodiment, it is mounted to and filled in not limited to the first
sealed chamber 85 of the second layer 80. The elastic material 60
can also be mounted to the second sealed chamber 87.
[0068] When the heel portion 14 is forced in actual use of the shoe
pad 5, the hollow bulge 711 and the first hollow bulge 811 can be
squashed to enable the chamber 75 to be under the compressed state
and meanwhile, the hot air can be squeezed out of the chamber 75.
When the heel portion 14 is not forced, the external force applied
to the hollow bulge 711 and the first hollow bulge 811 is released
to repristinate to enable the chamber 75 to be under the
uncompressed state and then the cold air inside the shoe can be
sucked into the chamber 75. Besides, the elastic material 60
located inside the first sealed chamber 85 can help enhance the
user's bouncing force while the user intends to leap.
[0069] In actual production, the shoe pad 5 can further include a
shock-absorbing material (not shown) mounted to the sealed chamber
below the first hollow bulge 811.
[0070] Referring to FIGS. 15-18, the multi-function shoe pad of the
present invention further includes at least one support member 90.
The support member 90 is made of rubber or another material which
has great structural strength and resilience for keeping the height
of the hollow bulge. The support member 90 includes four patterns
as follows.
[0071] In the first pattern, the support member 90 includes a
convex wall 901 and an air space 903 (FIG. 15A) formed at an
internal side of the convex wall 901. In the second pattern, the
support member 90 includes the convex wall 901, the air space 903,
and a nozzle 905 (FIG. 16) for communication with the air space
903. In the third pattern, the support member 90 includes the
convex wall 901, the air space 903, the nozzle 905, and a bottom
wall 907 (FIG. 17) connected with the convex wall 901 and the
nozzle 905 in one piece. In the fourth pattern, the support member
90 includes the convex wall 901, the air space 903, and a bottom
wall 907 other than the nozzle 905, as shown in FIG. 18.
[0072] In other words, as shown in FIG. 15A, the support member 90
located at the heel portion 14 does not include the bottom wall
907; the support members 90 located at the toe portion 16 and the
metatarsus portion 18 does not have the bottom wall 907, either.
However, the air space 901 is sealed by the first layer 70 and the
convex wall 901. In this way, the shoe pad can keep the air exhaust
and enhance the bouncing force. As shown in FIG. 15B, similar to
FIG. 15A, the first layer 70 can be applied to the general flat
main body and meanwhile, a third sealed chamber 89 is formed at the
heel portion 14. As shown in FIGS. 16a and 17, the support member
90 at the heel portion 14 includes the nozzle 905 received in the
first air groove 131, such that the shoe pad can enhance its
performance of air exhaust. As shown in FIG. 18, the support member
90 located at the heel portion 14 does not include the bottom wall
907 and the support members 90 located at the toe portion 16 and
the metatarsus portion 18 both include the bottom wall 907, such
that the shoe pad of the present invention can keep the air exhaust
and enhance the bouncing force.
[0073] It is to be noted that the support member 90 can have many
patterns, e.g. whether the bottom wall or the nozzle is available
or not, and the shoe pad of the present invention also has many
patterns, so a variety of interchangeable structures under the
sprit of the present invention fall within the scope of the present
invention. Besides, the support member 90 can be directly fixed to
the bottom side of the main body and when the shoe pad is put
inside the shoe, the arc-shaped surface of the support member 90
contacts the insole of the shoe.
[0074] On the other hand, referring to FIG. 19, the support members
90 can be interconnected with one another by a coupling piece 92.
Besides, the support members 90 located at the toe portion 16, the
metatarsus portion 18, and the heel portion 14 each have the nozzle
for enhancing the efficiency of air exhaust; alternatively, those
support members 90 do not have any nozzle but each can have a hole
running through the convex wall relative to the air groove to allow
communication between the air space and the air groove for the
purpose of enhancing the efficiency of air exhaust. It is to be
further noted that the support members 90 interconnected by the
coupling piece 92 can be made to be larger to be fixed to the main
body. Besides, referring to FIG. 20, the external convex surface
111a can further have a reinforcing recession 113 for enhancing the
structural strength of the hollow bulge 111. Alternatively,
referring to FIG. 21, the external convex surface 111a can further
have a plurality of protrusions 15 formed on the external convex
surface 111a; the reinforcing recession 113 is located at the
midsection of the external convex surface 111a; the protrusions 15
surround the reinforcing recession 113.
[0075] When the shoe pad is usually manufactured, to enhance the
confortability of the shoe pad, a cloth is adhered to a raw main
body and then a die forming process proceeds. However, if the cloth
adhered to the raw main body is less ductile, it will adversely
affect the further forming process of the main body. Thus,
depending on the actual requirement, the cloth can be adhered to
the shoe pad of the present invention after the main body is
formed.
[0076] It is to be noted that the above embodiments are cited for
detailed illustration of the present invention only but the present
invention is not limited to them. For example, the number of the
hollow bulge is not limited and preferably 1-7. When the hollow
bulge is more than one, if one of the hollow bulges is located at
the heel portion, the rest will be located at at least one of the
internal foot-arch portion, the external foot-arch portion, the
metatarsus portion, and the toe portion or at least one of the
internal foot-arch portion, the external foot-arch portion, the
internal metatarsus portion, the external metatarsus portion, the
internal toe portion, and the external toe portion. If one of the
hollow bulges is located at the arc-shaped convex portion of the
internal foot-arch portion, the rest will be located at at least
one of the heel portion, the external foot-arch portion, the
metatarsus portion, and the toe portion, or at least one of the
heel portion, the external foot-arch portion, the internal
metatarsus portion, the external metatarsus portion, the internal
toe portion, and external toe portion. Besides, the number of the
air groove is also not limited and can the air groove can
communicate with the chamber below either of the hollow bulges.
Each of the air grooves has the narrow portion for communication
with the chambers below the hollow bulges to enhance the pressure
for exhaust of hot air. Similarly, when the main body is
double-layered, the number of the hollow bulges of the first and
second layers are not limited and their positions can be variable
as it depends, e.g. when the hollow bulges are plural, the bulges
of the first and second layers can be located at at least one of
the heel portion, the internal foot-arch portion, the external
foot-arch portion, the internal metatarsus portion, the external
metatarsus portion, the internal toe portion, and the external toe
portion.
[0077] In addition, the positions of the elastic material and the
shock-absorbing material are also not limited. Preferably, the
elastic material is mounted to the chamber corresponding to the
metatarsus portion of the main body and the shock-absorbing
material is mounted to the chamber corresponding to the heel
portion of the main body. Thus, the changes and modifications in
accordance with the spirit of the present invention fall within the
scope of the present invention.
[0078] In conclusion, the hollow bulges are mounted to the forced
portions of the main body of the multi-function shoe pad of the
present invention according to the user's tread on the ground while
the user is walking, so the air convection can be generated inside
the shoe and the shoe pad is effectively ventilative, not subject
to moldiness and malodor, can keep human sole dry for a long time,
and enhance comfortability for human sole. Besides, the air grooves
in coordination can further heighten the air convection. Moreover,
the hollow bulges can keep tight contact between the user's feet
and the shoe, so the present invention is also skidproof.
Furthermore, the hollow bulge is formed from the main body in one
piece, compared with the conventional shoe pad, to which the
protrusions are additionally mounted, so the present invention is
more durable and can be produced more easily. When the hollow bulge
is mounted to the arc-shaped convex portion of the internal
foot-arch portion, the shoe pad can further correct the user's
standing posture. Finally, the present invention includes the
support member below the hollow bulge and the hollow bulge has
certain structural strength and great resilience, such that the
hollow bulge can not only effective keep the height but be durable
to avoid deformation.
* * * * *