U.S. patent application number 17/054289 was filed with the patent office on 2021-08-05 for throwing star target.
This patent application is currently assigned to Kabushiki Kaisha Dartslive d/b/a Dartslive Co., Ltd., Kabushiki Kaisha Dartslive d/b/a Dartslive Co., Ltd.. The applicant listed for this patent is Kabushiki Kaisha Dartslive d/b/a Dartslive Co., Ltd., Kabushiki Kaisha Dartslive d/b/a Dartslive Co., Ltd., Sega Corporation. Invention is credited to Yuuki Kaneto, Hideki Saito, Shinichiro Yamamoto.
Application Number | 20210239438 17/054289 |
Document ID | / |
Family ID | 1000005535873 |
Filed Date | 2021-08-05 |
United States Patent
Application |
20210239438 |
Kind Code |
A1 |
Yamamoto; Shinichiro ; et
al. |
August 5, 2021 |
THROWING STAR TARGET
Abstract
A throwing star target is provided, in which a throwing star
easily sticks and which has excellent durability. A throwing star
target 1 which holds a thrown throwing star 2 includes a board 10,
and a plurality of pins 20 arranged on a target surface 10A of the
board 10. Each of the plurality of pins 20 has a polygonal XY cross
section, is formed to be tapered, and has flat surfaces 20U, 20V,
and 20W which come into contact with a front side 2A or a back side
2B of the throwing star 2 that is in a state in which of being
held.
Inventors: |
Yamamoto; Shinichiro;
(Tokyo, JP) ; Saito; Hideki; (Tokyo, JP) ;
Kaneto; Yuuki; (Tokyo, JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Kabushiki Kaisha Dartslive d/b/a Dartslive Co., Ltd.
Sega Corporation |
Tokyo
Tokyo |
|
JP
JP |
|
|
Assignee: |
Kabushiki Kaisha Dartslive d/b/a
Dartslive Co., Ltd.
Tokyo
JP
Sega Corporation
Tokyo
JP
|
Family ID: |
1000005535873 |
Appl. No.: |
17/054289 |
Filed: |
June 19, 2019 |
PCT Filed: |
June 19, 2019 |
PCT NO: |
PCT/IB2019/055138 |
371 Date: |
November 10, 2020 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F41J 3/00 20130101; F41J
1/01 20130101 |
International
Class: |
F41J 1/01 20060101
F41J001/01; F41J 3/00 20060101 F41J003/00 |
Foreign Application Data
Date |
Code |
Application Number |
May 11, 2018 |
JP |
2018-092075 |
Claims
1. A throwing star target which holds a thrown throwing star, the
throwing star target comprising: a board; and a plurality of pins
arranged on a target surface of the board, wherein each of the
plurality of pins has a polygonal cross section, is formed to be
tapered, and has a flat surface which comes into contact with a
front side or a back side of the throwing star that is in a state
of being held.
2. The throwing star target according to claim 1, wherein the
plurality of pins are arranged at regular intervals on the target
surface along a first direction, a second direction, and a third
direction each obtained by rotation by 120.degree. about an axis
perpendicular to the target surface, each of the plurality of pins
has a first surface which is formed along a fourth direction
obtained by rotating the first direction about the axis by
90.degree., a second surface which is formed along a fifth
direction obtained by rotating the second direction about the axis
by 90.degree., and a third surface which is formed along a sixth
direction obtained by rotating the third direction about the axis
by 90.degree., in a pair of the pins which are adjacent to each
other, the first surface of one of the pins and the first surface
of the other of the pins face each other, with a gap being formed
therebetween, and the gap at tip portions of the pins is greater
than a plate thickness of the throwing star and the gap at holding
portions of the pins, which are closer to the board than the tip
portions are, is smaller than the plate thickness of the throwing
star.
3. The throwing star target according to claim 2, wherein each of
the plurality of pins includes a shape of a hexagonal frustum or a
hexagonal prism constituted of a pair of the first surfaces, a pair
of the second surfaces, and a pair of the third surfaces.
4. The throwing star target according to claim 3, wherein each of
the plurality of pins further includes a fillet portion which is
smoothly contiguous with the target surface, and the fillet
portions each have an outer edge formed into a hexagonal shape and
are arranged without any space therebetween on the target surface
Description
TECHNICAL FIELD
[0001] The present invention relates to a throwing star target.
BACKGROUND ART
[0002] A throwing star throwing experience is popular among inbound
tourists to Japan. As a way to promote the nation as a
tourism-based country, it is desirable to offer a broader throwing
experience of throwing stars. However, some problems are evident in
the throwing experience of throwing stars. For example, in many
cases, a throwing star target produced by attaching a paper target
sheet, on which a concentric circle target is printed, to a support
member such as a tatami mat, plywood, or formed plastic is used. A
throwing star thrown by a beginner does not easily stick in such a
target even when the throwing star hits the target. In addition, a
throwing star made of metal may hurt a finger. When a thrower is
afraid of being injured, it is difficult for the thrower to throw
the throwing star with all his/her strength. On the other hand, a
safe throwing star made of rubber is light, and hence the throwing
star is less likely to stick in the target than the throwing star
made of metal.
[0003] In addition, the throwing star target in the prior art has a
problem with durability in addition to the problem of the throwing
star not easily sticking in the target. When the throwing star
sticks in the target, a large hole is made in the paper target
sheet or the support member. When the throwing star sticks in the
target several times, the paper target sheet or the support member
begins to have many fine splits and the pleasant appearance of the
throwing star target is spoiled. For the throwing star throwing
experience, the throwing star target is replaced with a new
throwing star target frequently to maintain the pleasant appearance
of the throwing star target or, the throwing star target is kept
used in a state, where the pleasant appearance of the throwing star
target is spoiled, to avoid an economic burden.
[0004] There is proposed, not for the throwing star but for a blow
dart, a target which can be used repeatedly while the pleasant
appearance of the target is maintained (see, e.g., Patent Document
1). In Patent Document 1, the target stand of a blow dart is
covered with oil-based clay, and a paper target sheet is attached
to the oil-based clay. Even when the oil-based clay serving as a
support member becomes full of holes, it is possible to mend the
oil-based clay by flattening the oil-based clay with fingers.
CITATION LIST
Patent Document
[0005] Patent Document 1: Patent Publication JP-A-2017-207268
SUMMARY
Technical Problem
[0006] However, in the case where the support member is the
oil-based clay, even when the throwing star hits the target, the
throwing star does not easily stick in the target. In particular,
the safe throwing star made of rubber does not stick deeply in hard
clay. In addition, unlike the blow dart of which tip is a needle,
when the throwing star of which tip is a sword is thrown, a larger
hole is made in the paper target sheet. According to the invention
described in Patent Document 1, it is possible to mend the support
member, but the invention cannot solve the problem of the paper
target sheet having many fine splits spoiling the pleasant
appearance of the target.
[0007] To cope with this, an object of the present invention is to
provide a throwing star target in which a throwing star easily
sticks and which has excellent durability.
Solution to Problem
[0008] An aspect of the present invention is a throwing star target
which holds a thrown throwing star. The throwing star target
includes a board, and a plurality of pins arranged on a target
surface of the board. Each of the plurality of pins has a polygonal
cross section, is formed to be tapered, and has a flat surface
which comes into contact with a front side or a back side of the
throwing star that is in a state of being held.
[0009] According to this aspect, the front side and the back side
of the throwing star are supported by the flat surfaces, and hence
the throwing star having hit the target does not easily fall and is
easily held in a state in which the throwing star sticks in the
target as compared with the case where the front side and the back
side of the throwing star are supported by points or lines.
[0010] In the above aspect, the plurality of pins may be arranged
at regular intervals on the target surface along a first direction,
a second direction, and a third direction each obtained by rotation
by 120.degree. about an axis perpendicular to the target surface,
each of the plurality of pins may have a first surface which is
formed along a fourth direction obtained by rotating the first
direction about the axis by 90.degree., a second surface which is
formed along a fifth direction obtained by rotating the second
direction about the axis by 90.degree., and a third surface which
is formed along a sixth direction obtained by rotating the third
direction about the axis by 90.degree., in a pair of the pins which
are adjacent to each other, the first surface of one of the pins
and the first surface of the other of the pins may face each other,
with a gap being formed therebetween, and the gap at tip portions
of the pins may be greater than a plate thickness of the throwing
star and the gap at holding portions of the pins, which are closer
to the board than the tip portions are, may be smaller than the
plate thickness of the throwing star.
[0011] According to this aspect, it becomes easy to hold the
throwing star in the state in which the throwing star sticks in the
target not only when the throwing star which rotates longitudinally
in the first direction hits the target but also when the throwing
star which is shifted in the second direction or the third
direction and rotates obliquely hits the target.
[0012] In the above aspect, each of the plurality of pins may
include a shape of a hexagonal frustum or a hexagonal prism
constituted of a pair of the first surfaces, a pair of the second
surfaces, and a pair of the third surfaces.
[0013] According to this aspect, the cross section is hexagonal,
and hence it is easy to arrange the pins. As compared with the case
where the cross section is triangular, a corner is not easily
damaged and the pin is not easily broken.
[0014] In the above aspect, each of the plurality of pins may
further include a fillet portion which is smoothly contiguous with
the target surface, and the fillet portions each may have an outer
edge formed into a hexagonal shape and may be arranged without any
space therebetween on the target surface.
[0015] According to this aspect, stress concentration on the root
of the pin is reduced by the fillet portion, and hence the pin
becomes less likely to be broken and the durability of the throwing
star target is improved. Although the fillet portion which spreads
outward is provided, the outer edge of the fillet portion is
hexagonal, and hence it is possible to arrange the pins closely in
accordance with the plate thickness of the throwing star.
Advantageous Effects of Invention
[0016] According to the present invention, it is possible to
provide the throwing star target in which the throwing star easily
sticks and which has excellent durability.
BRIEF DESCRIPTION OF DRAWINGS
[0017] FIG. 1 is a perspective view showing a throwing star target
according to an embodiment of the present invention.
[0018] FIG. 2 is a plan view of the throwing star target shown in
FIG. 1.
[0019] FIG. 3 is a side view when pins arranged in a first
direction are viewed from a fourth direction.
[0020] FIG. 4 is a plan view showing a throwing star target
according to a modification of the present invention.
DESCRIPTION OF EMBODIMENTS
[0021] A preferred embodiment of the present invention will be
described with reference to the accompanying drawings. Note that,
in the individual drawings, elements provided with the same
reference numerals have configurations which are identical or
similar to each other. One of characteristics of a throwing star
target 1 (hereinafter simply referred to as a "target 1" in some
cases) of an embodiment of the present invention is that flat
surfaces 20U, 20V, and 20W which come into surface contact with a
front side 2A and a back side 2B of a plate-like throwing star 2
from both sides are formed on individual pins 20 (see FIG. 1 and
FIG. 4).
[0022] In the present embodiment, the throwing star 2 is held in
one of pockets 31, 32, and 33 between pins 20L and 20R which bend
reversibly instead of a paper target sheet or a support member
which is destroyed irreversibly (see FIG. 2). Even when the
throwing star target 1 is repeatedly used, the throwing star target
1 does not have many splits and the pleasant appearance of the
throwing star target 1 is not spoiled.
[0023] In the throwing star 2, the center of gravity is located not
in a sword 41 at its tip but in a coupling portion 42 positioned at
the center. When compared with a dart or the like having the center
of gravity in a portion close to its tip, the throwing star 2 is
unstable in a state in which the throwing star 2 sticks in the
target 1 correspondingly to a longer distance from a target surface
10A to the center of gravity. In the present embodiment, an XY
cross section of the pin 20 is not circular but polygonal, and a
contact area C with each pf the front side 2A and the back side 2B
of the throwing star 2 is large (see FIG. 3). Consequently, it is
easy to hold the throwing star 2 of which the center of gravity is
unstable in a state in which the throwing star 2 sticks in the
target 1. Hereinbelow, each configuration will be described in
detail with reference to FIGS. 1 to 4.
[0024] FIG. 1 is a perspective view showing the throwing star
target 1 according to the embodiment of the present invention, and
the throwing star 2 which sticks in the target 1. The throwing star
2 is formed into the shape of a windmill which has a plurality of
swords 41 which extend radially and a coupling portion 42 which
connects the plurality of swords 41. An example shown in FIG. 1
shows the throwing star 2 constituted of a rubber plate which is
formed into the shape of a cross. A plate thickness F of the rubber
plate is, e.g., about 5 mm.
[0025] Each sword 41 has a pointed tip. An edge 41E at the tip is
formed to form an acute angle like a blade. When the target 1 is
hit, in the case of a blow dart or a dart, the tip thereof is a
needle, and hence force is concentrated at one point. However, in
the case of the plate-like throwing star 2, force is dispersed over
the ridge of the edge 41E, and hence the throwing star 2 does not
easily stick. The throwing star target 1 of the present embodiment
is configured so as to hold the above-described throwing star 2 in
a state in which the throwing star 2 sticks in the throwing star
target 1 without falling when the throwing star 2 hits the throwing
star target 1.
[0026] The throwing star target 1 includes a board (base) 10 and a
plurality of pins (protrusions) 20. The board 10 and the pins 20
constitute an integral structure formed of resin material such as
polyamide resin. The throwing star target 1 may be a translucent
target or a lightproof target. In the case where the throwing star
target 1 is constituted of resin material having translucency, it
is possible to apply light to a back surface 10B and draw a moving
target on the target surface 10A.
[0027] The board 10 is formed into a plate-like shape having a
certain thickness, and has the flat target surface (board surface)
10A. The target surface 10A is formed in parallel to a longitudinal
direction X and a lateral direction Y intersecting the longitudinal
direction X. A thickness direction Z of the board 10 intersects the
longitudinal direction X and the lateral direction Y. In the
example shown in FIG. 1, the longitudinal direction X and the
lateral direction Y of the target surface 10A and the thickness
direction Z of the board 10 are orthogonal to each other.
[0028] Each pin 20 has a polygonal XY cross section, is formed to
be tapered, and has flat surfaces 20U, 20V, and 20W which come into
surface contact with the front side 2A or the back side 2B of the
throwing star 2 which is held by the target 1. In the example shown
in FIG. 1, the XY cross section of the pin 20 cut by an XY plane
parallel to the target surface 10A is formed into a hexagonal
shape. In the case where the pin 20 is short, when the throwing
star 2 hits the target 1, the throwing star 2 easily falls without
sticking in the target 1. In the case where the pin 20 is long,
when the throwing star 2 hits the target 1, the pin 20 is easily
broken. The height of the pin 20 is, e.g., about 2 cm.
[0029] FIG. 2 is a plan view of the throwing star target 1. The
plurality of pins 20 are arranged on the target surface 10A. In an
example shown in FIG. 2, the plurality of pins 20 are arranged at
regular intervals on the target surface 10A along a first direction
R, a second direction S, and a third direction Teach obtained by
rotation by 120.degree. about a Z axis perpendicular to the target
surface 10A. The above-described surfaces 20U, 20V, and 20W are
formed along fourth to sixth directions U, V, and W obtained by
rotating the first to third directions R, S, and T about the Z axis
by 90.degree..
[0030] The throwing star 2 flying toward the target 1 is rotating,
e.g., longitudinally. When the target surface 10A is compared to
the face of a clock, an example of the fourth direction U is a
twelve o'clock direction which connects twelve o'clock and six
o'clock, an example of the fifth direction V is a four o'clock
direction which connects four o'clock and ten o'clock, and an
example of the sixth direction W is an eight o'clock direction
which connects eight o'clock and two o'clock. An example of the
above-described longitudinal direction X is the twelve o'clock
direction, and coincides with the fourth direction U. Note that,
there are cases where the throwing star target 1 is tilted and
installed, and hence the longitudinal direction X of the target
surface 10A does not necessarily coincide with a vertical
direction.
[0031] The fourth to sixth directions U, V, and W are directions
obtained by rotating the first to third directions R, S, and T
about the Z axis by 90.degree.. That is, an example of the first
direction R is a nine o'clock direction which connects nine o'clock
and three o'clock, an example of the second direction S is a one
o'clock direction which connects one o'clock and seven o'clock, and
an example of the third direction T is a five o'clock direction
which connects five o'clock and eleven o'clock. An example of the
above-described lateral direction Y is the nine o'clock direction,
and coincides with the first direction R.
[0032] As shown in FIG. 2, a pocket 31 which extends in the fourth
direction U is formed between a pair of pins 20 which are adjacent
to each other in the first direction R. Similarly, a pocket 32
which extends in the fifth direction V is formed between a pair of
pins 20 which are adjacent to each other in the second direction S,
and a pocket 33 which extends in the sixth direction W is formed
between a pair of pins 20 which are adjacent to each other in the
third direction T. When the throwing star 2 hits the target 1, the
tip of the sword 41 of the throwing star 2 is guided to one of the
pockets 31, 32, and 33.
[0033] The description will be made with reference to FIG. 1 again.
As described thus far, each pin 20 has the first surface 20U which
is parallel to the fourth direction U, the second surface 20V which
is parallel to the fifth direction V, and the third surface 20W
which is parallel to the sixth direction W. In the example shown in
FIG. 1, each pin 20 has a pair of first A surfaces 20Ua which
intersect the thickness direction Z and are parallel to the fourth
direction U, and a pair of first B surfaces 20Ub which are parallel
to the thickness direction Z and the fourth direction U. Each of
the first A surfaces 20Ua and the first B surfaces 20Ub is an
example of the first surface 20U.
[0034] Similarly, each pin 20 has a pair of second A surfaces 20Va
which intersect the thickness direction Z and are parallel to the
fifth direction V, a pair of second B surfaces 20Vb which are
parallel to the thickness direction Z and the fifth direction V, a
pair of third A surfaces 20Wa which intersect the thickness
direction Z and are parallel to the sixth direction W, and a pair
of third B surfaces 20Wb which are parallel to the thickness
direction Z and the sixth direction W. Each of the second A
surfaces 20Va and the second B surfaces 20Vb is an example of the
first surface 20V, and each of the third A surfaces 20Wa and the
third B surfaces 20Wb is an example of the third surface 20W.
[0035] Each pin 20 includes a first body portion 22 which is formed
into the shape of a hexagonal frustum and a second body portion 23
which is formed into the shape of a hexagonal prism. The first body
portion 22 is constituted of a pair of the first A surfaces 20Ua, a
pair of the second A surfaces 20Va, and a pair of the third A
surfaces 20Wa. The second body portion 23 is positioned further to
a base end side Zb of the pin 20 than the first body portion 22 is,
and is constituted of a pair of the first B surfaces 20Ub, a pair
of the second B surfaces 20Vb, and a pair of the third B surfaces
20Wb.
[0036] Each pin 20 further includes a drawing portion 21 which is
positioned further to a tip side Za of the pin 20 than the first
body portion 22 is, and a fillet portion 24 which is positioned
further to the base end side Zb of the pin 20 than the second body
portion 23 is. The drawing portion 21 is formed to be tapered, and
the tip of the drawing portion 21 is smoothly rounded. The fillet
portion 24 is smoothly extended from the second body portion 23 to
the target surface 10A. The outer edge of the fillet portion 24 is
formed into a hexagonal shape, and the fillet portions 24 are
arranged on the target surface 10A without any space.
[0037] FIG. 3 is a side view when the pins 20 arranged in the first
direction R are viewed from the fourth direction U. The
above-described pocket 31 is formed between a pair of pins 20L and
20R which are adjacent to each other in the first direction R. Note
that each of the pockets 32 and 33 has substantially the same shape
and function as those of the pocket 31. Accordingly, the pocket 31
will be described in detail as a representative thereof, and the
duplicate description of the pockets 32 and 33 will be omitted.
[0038] Similarly, each of the second surface 20V which defines a
gap G of the pocket 32 and the third surface 20W which defines a
gap G of the pocket 33 has substantially the same shape and
function as those of the first surface 20U which defines a gap G of
the pocket 31. Accordingly, the first surface 20U will be described
in detail as a representative thereof, and the duplicate
description of the second and third surfaces 20V and 20W will be
omitted.
[0039] As shown in FIG. 3, the first surface 20U of one pin 20L and
the first surface 20U of the other pin 20R face each other with the
gap G formed therebetween. In an example shown in FIG. 3, the first
A surfaces 20Ua each constituting the hexagonal frustum face each
other, and the first B surfaces 20Ub each constituting the
hexagonal prism face each other.
[0040] Each pin 20 is formed such that the gap G between the first
surfaces 20U facing each other is substantially equal to the plate
thickness F of the throwing star 2 at a predetermined depth D in
the thickness direction Z. The tip side Za of the depth D in the
pin 20 is assumed to be a tip portion, and the base end side Zb of
the depth D in the pin 20 is assumed to be a holding portion. In
the tip portion, the gap G between the first surfaces 20U is larger
than the plate thickness F of the throwing star 2. In the holding
portion, the gap G between the first surfaces 20U is smaller than
the plate thickness F of the throwing star 2.
[0041] In the example shown in FIG. 3, the depth D is positioned in
the first body portion 22. A portion of the first body portion 22
on the tip side Za of the depth D is assumed to be a first A body
portion 22a, and a portion of the first body portion 22 on the base
end side Zb of the depth D is assumed to be a first B body portion
22b. Each of the drawing portion 21 and the first A body portion
22a is an example of the above-described tip portion. Each of the
first B body portion 22b and the second body portion 23 is an
example of the above-described holding portion.
[0042] When the throwing star 2 hits the target 1, the edge 41E of
the throwing star 2 formed obliquely relative to the target surface
10A slides on the surface of the drawing portion 21 or the first
body portion 22 which is also formed obliquely relative to the
target surface 10A, and the tip of the sword 41 is guided to the
pocket 31 (32, 33) between adjacent pins 20.
[0043] The thickness of the throwing star 2 gradually increases
from the edge 41E toward the inside, and then becomes constant when
it reaches the plate thickness F of the rubber plate. The gap G
between the first surfaces 20U of the pins 20L and 20R gradually
decreases from the tip side Za of the pin 20 toward the base end
side Zb. As the tip of the sword of the throwing star 2 advances in
the thickness direction Z, a difference between the thickness of
the throwing star 2 and the gap G between the pins 20L and 20R
decreases. When part of the throwing star 2 (e.g., a ridge 41D of
the sword 41) reaches the depth D, the thickness of the throwing
star 2 coincides with the gap G between the pins 20L and 20R.
[0044] The target 1 made of resin can deform reversibly. The tip of
the sword of the throwing star 2 widens the gap G between the pins
20, and sticks to reach a position slightly deeper than the depth
D. At this point, the first A surface 20Ua of one pin 20L deforms
along the front side 2A of the throwing star 2, and comes into
surface contact with the front side 2A. Similarly, the first A
surface 20Ua of the other pin 20R deforms along the back side 2B of
the throwing star 2, and comes into surface contact with the back
side 2B.
[0045] According to the throwing star target 1 of the present
embodiment configured in the above manner, the flat front side 2A
and the flat back side 2B of the throwing star 2 are supported by
the flat first surfaces 20U of the pins 20, and hence a contact
area C is large as compared with the case where the throwing star 2
is supported by cylindrical surfaces. The throwing star 2 having
hit the target 1 does not fall easily and is easily held in a state
in which the throwing star 2 sticks in the target 1.
[0046] The present embodiment is particularly suitable for a safe
throwing star made of rubber. While the throwing star made of
rubber is safe as compared with the throwing star made of metal,
the throwing star made of rubber is light, and hence the throwing
star made of rubber does not easily stick deeply in a hard support
member such as clay. According to the present embodiment, even the
light throwing star 2 reliably sticks deeply to reach the
predetermined depth D if the throwing star 2 hits the target 1.
Consequently, the throwing star 2 having hit the target 1 does not
fall easily and is easily held in the state in which the throwing
star 2 sticks in the target 1.
[0047] In the present embodiment, the throwing star 2 is easily
held in the state in which the throwing star 2 sticks in the target
1 with the pockets 31, 32, and 33 which extend in the fourth to
sixth directions U, V, and W not only when the throwing star 2
which rotates longitudinally in the fourth direction U hits the
target 1 but also when the throwing star 2 which is shifted in the
fifth direction V or the sixth direction W and rotates obliquely
hits the target 1.
[0048] The throwing star 2 flying toward the target 1 is often
rotating longitudinally in the twelve o'clock direction. When the
throwing star 2 rotating in the twelve o'clock direction hits the
target 1, the tip of the sword of the throwing star 2 is guided to
the pocket 31, the first surfaces 20U defining the gap G of the
pocket 31 come into surface contact with the front side 2A and the
back side 2B of the throwing star 2 from both sides to hold the
throwing star 2.
[0049] Even when the throwing star 2 is tilted in a ten o'clock
direction during flight, the tip of the sword of the throwing star
2 is guided to the pocket 32 extending in the fifth direction V
(ten o'clock direction), and the second surfaces 20V of the pocket
32 come into surface contact with the front side 2A and the back
side 2B of the throwing star 2 from both sides. Similarly, even
when the throwing star 2 is tilted in a two o'clock direction, the
third surfaces 20W of the pocket 33 extending in the sixth
direction (two o'clock direction) come into surface contact with
the front side 2A and the back side 2B of the throwing star 2 from
both sides.
[0050] In the present embodiment, the throwing star 2 is held by
the pin 20 which deforms reversibly, and hence a paper target sheet
or a support member of the paper target sheet does not become full
of holes. The throwing star target 1 can be repeatedly used while
the pleasant appearance of the throwing star target 1 is
maintained. Each pin 20 includes the first and second body portions
22 and 23 each having the XY cross section formed into the
hexagonal shape. Consequently, it is easy to arrange the pins 20
such that the flat surfaces 20U, 20V, and 20W of the adjacent pins
20 are parallel to each other. As compared with the case where the
XY cross section is triangular, a corner is not easily damaged and
the pin 20 is not easily broken.
[0051] In addition, stress concentration on the root of the pin 20
is reduced by the fillet portion 24, and hence the pin 20 is not
easily broken. The outer edge of the fillet portion 24 is
hexagonal, and hence, even when the fillet portion 24 which spreads
widely is formed, it is possible to arrange the pins 20
closely.
[0052] The embodiment described thus far is intended to facilitate
understanding of the present invention, and is not intended to
interpret the present invention as being limited thereto. The
individual elements of the embodiment, and the arrangements,
materials, conditions, shapes, and sizes of the individual elements
are not limited to those shown by way of example, and can be
appropriately changed. In addition, part of the configuration
described in one embodiment can be replaced or combined with part
of the configuration described in another embodiment.
[0053] For example, the XY cross section of the pin 20 may be
triangular. As shown in a modification shown in FIG. 4, when the XY
cross section of the pin 20 has the shape of an equilateral
triangle, similarly to the embodiment in which the XY cross section
of the pin 20 is hexagonal, it is possible to hold the throwing
star 2 which rotates in each of the fourth to sixth directions U,
V, and W. Although not shown in the drawings, the XY cross section
of the pin 20 may also have the shape of an isosceles right
triangle. When the pins 20 are arranged such that the bases of the
adjacent isosceles right triangles face each other and the legs
thereof face each other, it is possible to hold the throwing star 2
which rotates in each of four directions of twelve o'clock,
half-past one, three o'clock, and half-past four.
[0054] Further, the XY cross section of the pin 20 may be
quadrangular, pentagonal, or octagonal. However, when the XY cross
section is quadrangular, the pin 20 can come into surface contact
with the throwing star 2 only from two directions including
longitudinal and lateral directions. When the YX cross section is
pentagonal, it is difficult to arrange the pins without any space.
When the XY cross section is octagonal or has a shape having nine
or more sides, each surface becomes small and the contact area is
reduced. Accordingly, the XY cross section of the pin 20 preferably
has the hexagonal shape shown in FIG. 2.
[0055] For example, one of the first and second body portions 22
and 23 shown in FIG. 1 may be omitted, or a third body portion and
a fourth body portion each having the shape of a hexagonal frustum
having an inclination angle different from that of the first body
portion may be further provided. In the case where the first body
portion 22 is omitted, the drawing portion 21 serves as the tip
portion, and the second body portion 23 serves as the holding
portion.
[0056] For example, the throwing star 2 may be configured so as to
be held by the target 1 at a portion of a blade between the edge
41E and the ridge 41D instead of the ridge 41D of the sword 41. In
this case, the gap G between the pins 20L and 20R at the
predetermined depth D may be appropriately set to be equal to the
thickness of the blade of the throwing star 2 which is smaller than
the plate thickness F of the throwing star 2. For example, the
board 10 may be three-dimensional. When the roughness of the target
surface 10A relative to the size of the pin 20 is negligibly small,
a surface of a life-sized ninja doll or the like may be configured
as the target surface 10A.
REFERENCE SIGNS LIST
[0057] 1 Throwing star target [0058] 2 Throwing star [0059] 2A
Front side [0060] 2B Back side [0061] 10 Board [0062] 10A Target
surface [0063] 10B Back surface [0064] 20 Pin [0065] 20L One pin
[0066] 20R Other pin [0067] 20U First surface (example of flat
surface) [0068] 20Ua First A surface (example of first surface)
[0069] 20Ub First B surface (example of first surface) [0070] 20V
Second surface (example of flat surface) [0071] 20Va Second A
surface (example of second surface) [0072] 20Vb Second B surface
(example of second surface) [0073] 20W Third surface (example of
flat surface) [0074] 20Wa Third A surface (example of third
surface) [0075] 20Wb Third B surface (example of third surface)
[0076] 21 Drawing portion (example of tip portion) [0077] 22 First
body portion (example of portion of hexagonal frustum) [0078] 22a
First A body portion (example of tip portion) [0079] 22b First B
body portion (example of holding portion) [0080] 23 Second body
portion (example of portion of hexagonal prism, example of holding
portion) [0081] 24 Fillet portion [0082] 31, 32, 33 Pocket [0083]
41 Sword [0084] 41D Ridge [0085] 41E Edge [0086] 42 Coupling
portion [0087] C Contact area [0088] D Depth from pin tip [0089] F
Plate thickness [0090] G Gap [0091] R First direction [0092] S
Second direction [0093] T Third direction [0094] U Fourth direction
[0095] V Fifth direction [0096] W Sixth direction [0097] X
Longitudinal direction [0098] Y Lateral direction [0099] Z
Thickness direction [0100] Za Pin tip side [0101] Zb Pin base end
side
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