WO2019215710A1 - Throwing star target - Google Patents

Abstract

The present invention provides a throwing star target which has excellent durability and to which throwing stars readily stick. A throwing star target 1 for holding a throwing star 2 thrown thereat is provided with a board 10 and a plurality of pins 20 arranged on a target face 10A of the board 10. Each pin 20 has a polygonal shape in the X and Y cross-sections and is formed with a tapered tip, and the pins each have flat surfaces 20U, 20V, 20W which are in contact with the front surface 2A and rear surface 2B of the throwing star 2 when held by the pins.

Description

Target of shuriken

The present invention relates to the target of shuriken.

The shuriken throwing experience is popular with tourists visiting Japan. I would like to expand the base of the shuriken throwing experience to promote tourism. However, the shuriken throwing experience has several challenges. For example, many shuriken targets have a target paper printed with concentric targets attached to a support member such as tatami mat, plywood or foam plastic. A shuriken thrown by a beginner does not easily stab even if it hits like that. In addition, a metal shuriken can hurt your fingers. If you are afraid of injuries, it is hard to throw a shuriken hard. On the other hand, a safe rubber shuriken is lighter and therefore harder to stab than a metal shuriken.

Also, the target of the conventional shuriken is not only difficult to stab the shuriken, but also has a problem with durability. When the shuriken is stabbed, a large hole is opened in the target paper or support member. If a shuriken is stabbed several times, the target paper and supporting members will rise up and damage the aesthetics. In the shuriken throwing experience, the target of the shuriken is frequently replaced with a new one in order to maintain the aesthetics, or used in a state where the aesthetics are impaired due to the economic burden.

Although it is a blow arrow instead of shuriken, a target that can be used repeatedly while maintaining its aesthetic appearance has been proposed (for example, see Patent Document 1). The blow stand target described in Patent Document 1 is laid with oily clay and a target paper is pasted thereon. Even if the oily clay as a support member becomes full of holes, it can be repaired evenly with fingers.

JP 2017-207268 A

However, if the support member is made of oily clay, the shuriken is difficult to stab even if hit. In particular, a safe rubber shuriken does not penetrate deeply into hard clay. Also, unlike the tip of a needle with a tip, throwing a shuriken with a sword at the tip will open a large hole in the target paper. In the invention described in Patent Document 1, although the support member can be repaired, the problem that the target paper is raised and the aesthetic appearance is impaired cannot be solved.
Therefore, an object of the present invention is to provide a shuriken target that is easy to pierce a shuriken and has excellent durability.

One aspect of the present invention is the target of a shuriken that holds a thrown shuriken. The target of the shuriken includes a board and a plurality of pins arranged on the target surface of the board. Each pin has a polygonal cross section, is tapered, and has a flat surface in contact with the front and back surfaces of the held shuriken.
According to this aspect, since the front and back surfaces of the shuriken are supported by flat surfaces, the hit shuriken is easily held in a state where it is hard to fall compared to the case where the shuriken is supported by dots or lines.

In the above aspect, the plurality of pins are arranged at equal intervals on the target surface along the first direction, the second direction, and the third direction rotated by 120 ° about an axis perpendicular to the target surface. Are a first surface formed along a fourth direction rotated 90 ° around the axis in the first direction, and a second surface formed along a fifth direction rotated around the axis 90 ° around the second direction. And a third surface formed along a sixth direction rotated about 90 ° in the third direction around the axis, and in a pair of adjacent pins, the first surface of one pin and the other of the other pin The first surface is opposed to each other with a gap, and the gap is larger than the thickness of the shuriken at the tip of the pin, and smaller than the thickness of the shuriken at the pin holding portion closer to the board than the tip. May be.
According to this aspect, not only when the shuriken that vertically rotates in the first direction hits the target, but also when the shuriken that rotates obliquely shifted in the second direction and the third direction hits the state, the shuriken is stuck Easy to hold.

In the above aspect, each pin may include a hexagonal frustum shape or a hexagonal column shape including a pair of first surfaces, a pair of second surfaces, and a pair of third surfaces.
According to this aspect, since the cross section is hexagonal, the pins are easily arranged. Compared to the case where the cross section is triangular, the corner is hard to be damaged and the pin is hard to break.

In the above aspect, each pin may further include a fillet portion that is smoothly continuous with the target surface, and the fillet portion may have an outer edge formed in a hexagonal shape and may be arranged without a gap on the target surface.
According to this aspect, the stress concentration at the base of the pin is relieved at the fillet portion, so that the pin is not easily broken and the target durability of the shuriken is improved. Although the fillet part which spreads outward is provided, since the outer edge is a hexagon, the pins can be arranged closely according to the thickness of the shuriken.

According to the present invention, it is possible to provide a shuriken target that is easy to pierce the shuriken and has excellent durability.

It is a perspective view which shows the target of the shuriken of one Embodiment of this invention. FIG. 2 is a plan view of a target of the shuriken shown in FIG. 1. It is the side view which looked at the pin arranged in the 1st direction from the 4th direction. It is a top view which shows the target of the shuriken which concerns on the modification of this invention.

A preferred embodiment of the present invention will be described with reference to the accompanying drawings. In addition, in each figure, what attached | subjected the same referential mark has the same or similar structure. The target 1 of the shuriken (hereinafter simply referred to as “target 1”) according to one embodiment of the present invention is a flat surface 20U, 20V that is in surface contact with the front surface 2A and the rear surface 2B of the plate-shaped shuriken 2 from both sides. , 20W is formed on each pin 20 (see FIGS. 1 and 4).

In the present embodiment, the shuriken 2 is sandwiched between any of the pockets 31, 32, 33 between the pins 20L, 20R that are reversibly bent, not the target paper or support member that is irreversibly destroyed (see FIG. 2). ). Repeated use of shuriken target 1 does not spoil the beauty.

The shuriken 2 is centered on the connecting portion 42 instead of the sword 41 at the tip. Compared with a dart or the like whose center of gravity is closer to the tip, the center of gravity is unstable because the center of gravity is far from the target surface 10A. In this embodiment, the XY cross section of the pin 20 is not a circle but a polygon, and the contact area C between the front surface 2A and the rear surface 2B of the shuriken 2 is large (see FIG. 3). Therefore, it is easy to hold the shuriken 2 having an unstable center of gravity with the target 1 stuck in the target 1. Hereinafter, each configuration will be described in detail with reference to FIGS.

FIG. 1 is a perspective view showing a shuriken target 1 according to an embodiment of the present invention, and a shuriken 2 in a state of being stuck in the target 1. The shuriken 2 is formed in a windmill type having a plurality of swords 41 extending radially and a connecting portion 42 connecting the plurality of swords 41. In the example shown in FIG. 1, the shuriken 2 of the rubber plate formed in the cross shape is shown. The thickness F of the rubber plate is, for example, about 5 mm.

Each sword 41 has a sharp sword tip. The edge 41E of the sword tip is formed at an acute angle imitating a blade. When hitting target 1, if it is a blown arrow or dart, the tip is a needle and the force concentrates on one point. However, the plate-shaped shuriken 2 is hard to be stabbed because the force is distributed to the ridgeline of the edge 41E. The shuriken target 1 of the present embodiment is configured to hold the shuriken 2 in a state where it is stuck without dropping when the shuriken 2 hits.

The target 1 of the shuriken includes a board (base) 10 and a plurality of pins (projections) 20. The board 10 and the pin 20 are an integral structure formed from a resin material such as polyamide resin. The target 1 of the shuriken may be translucent or light-shielding. In the case where the shuriken target 1 is formed of a translucent resin material, light can be projected onto the back surface 10B to draw a moving target on the target surface 10A.

The board 10 is formed in a plate shape having a thickness and has a flat target surface (board surface) 10A. The target surface 10A is formed in parallel to the vertical direction X and the horizontal direction Y intersecting the vertical direction X. The thickness direction Z of the board 10 intersects the vertical direction X and the horizontal direction Y. In the example shown in FIG. 1, the vertical direction X and the horizontal direction Y of the target surface 10A and the thickness direction Z of the board 10 are orthogonal to each other.

Each pin 20 has a flat surface 20U, 20V, 20W that is in contact with the front surface 2A and the rear surface 2B of the shuriken 2 in a state where the XY section is polygonal and tapered, and is held in a target 1. ing. In the example shown in FIG. 1, the XY cross section of the pin 20 cut | disconnected by XY plane parallel to 10 A of target surfaces is formed in the hexagon. If the pin 20 is short, even if the shuriken 2 hits, it is easy to fall without being stabbed. If the pin 20 is long, it is easy to break when the shuriken 2 hits. The height of the pin 20 is, for example, about 2 cm.

2 is a plan view of target 1 of the shuriken. The plurality of pins 20 are arranged on the target surface 10A. In the example shown in FIG. 2, the plurality of pins 20 are arranged on the target surface 10A along the first direction R, the second direction S, and the third direction T rotated by 120 ° around the Z axis perpendicular to the target surface 10A. Are arranged at equal intervals. The aforementioned 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 by 90 ° around the Z axis.

The shuriken 2 flying toward the target 1 is rotating vertically, for example. When the target surface 10A is regarded as a clock face, an example of the fourth direction U is a 12 o'clock direction connecting 12 o'clock and 6 o'clock, and an example of the fifth direction V is connecting 4 o'clock and 10 o'clock. 4 o'clock direction, and an example of the sixth direction W is the 8 o'clock direction connecting 8 o'clock and 2 o'clock. An example of the above-described vertical direction X is the 12 o'clock direction, which coincides with the fourth direction U. Since the target 1 of the shuriken may be inclined and installed, the vertical direction X of the target surface 10A does not necessarily match the vertical direction.

The fourth to sixth directions U, V, W are directions obtained by rotating the first to third directions R, S, T by 90 ° around the Z axis. That is, an example of the first direction R is a 9 o'clock direction connecting 9 o'clock and 3 o'clock, and an example of the second direction S is an 1 o'clock direction connecting 1 o'clock and 7 o'clock, An example of the direction T is a 5 o'clock direction connecting 5 o'clock and 11 o'clock. An example of the aforementioned lateral direction Y is the 9 o'clock direction, which coincides with the first direction R.

As shown in FIG. 2, a pocket 31 extending in the fourth direction U is formed between a pair of pins 20 adjacent in the first direction R. Similarly, a pocket 32 extending in the fifth direction V is formed between a pair of pins 20 adjacent in the second direction S, and between the pair of pins 20 adjacent in the third direction T, Pockets 33 extending in six directions W are formed. When the shuriken 2 hits the target 1, the sword tip of the sword 41 of the shuriken 2 is guided to one of the pockets 31, 32, 33.

Referring back to FIG. As described above, each pin 20 includes the first surface 20U parallel to the fourth direction U, the second surface 20V parallel to the fifth direction V, and the third surface 20W parallel to the sixth direction W. And have. In the example shown in FIG. 1, each pin 20 includes a pair of first A surfaces 20 </ b> Ua that intersects the thickness direction Z and is parallel to the fourth direction U, and a pair of first B that is parallel to the thickness direction Z and the fourth direction U. And a surface 20Ub. The first A and first B surfaces 20Ua and 20Ub are both examples of the first surface 20U.

Similarly, each pin 20 includes a pair of second A surfaces 20Va intersecting the thickness direction Z and parallel to the fifth direction V, and a pair of second B surfaces 20Vb parallel to the thickness direction Z and the fifth direction V. It has a pair of 3A surface 20Wa which cross | intersects the thickness direction Z and is parallel to the 6th direction W, and a pair of 3B surface 20Wb parallel to the thickness direction Z and the 6th direction W. The second A and second B surfaces 20Va and 20Vb are all examples of the first surface 20V, and the third A and third B surfaces 20Wa and 20Wb are both examples of the third surface 20W.

Each pin 20 includes a first body portion 22 formed on a hexagonal frustum and a second body portion 23 formed on a hexagonal column. The first body 22 includes a pair of first A surfaces 20Ua, a pair of second A surfaces 20Va, and a pair of third A surfaces 20Wa. The second body portion 23 is positioned closer to the base end side Zb of the pin 20 than the first body portion 22, and includes a pair of first B surfaces 20Ub, a pair of second B surfaces 20Vb, and a pair of third B surfaces 20Wb. Has been.

Each pin 20 includes a call-in portion 21 located on the distal end side Za of the pin 20 with respect to the first body portion 22, and a fillet portion 24 located on the proximal end side Zb of the pin 20 with respect to the second body portion 23. In addition. The call-in part 21 is formed to be tapered, and the tip is smoothly rounded. The fillet part 24 is smoothly continuous from the second body part 23 to the target surface 10A. The fillet portion 24 has an outer edge formed in a hexagonal shape, and is arranged on the target surface 10A without a gap.

FIG. 3 is a side view of the pins 20 arranged in the first direction R as seen from the fourth direction U. Between the pair of pins 20L and 20R adjacent in the first direction R, the aforementioned pocket 31 is formed. The aforementioned pockets 32 and 33 have substantially the same shape and function as the pocket 31. Therefore, the pocket 31 will be described in detail as a representative, and overlapping description of the pockets 32 and 33 will be omitted.

Similarly, the second surface 20V that defines the gap G of the pocket 32 and the third surface 20W that defines the gap G of the pocket 33 have substantially the same shape and function as the first surface 20U that defines the gap G of the pocket 31. Have. Therefore, as a representative, the first surface 20U will be described in detail, and overlapping description of the second and third surfaces 20V and 20W will be omitted.

As shown in FIG. 3, the first surface 20U of one pin 20L and the first surface 20U of the other pin 20R are opposed to each other with a gap G therebetween. In the example shown in FIG. 3, the first A surfaces 20Ua constituting the hexagonal frustums face each other, and the first B surfaces 20Ub constituting the hexagonal columns face each other.

Each pin 20 is formed such that the gap G between the opposing first surfaces 20U is substantially the same as the plate thickness F of the shuriken 2 at a predetermined depth D in the thickness direction Z. The distal end side Za of the pin 20 with respect to the depth D is defined as the distal end portion, and the proximal end side Zb of the pin 20 with respect to the depth D is defined as the holding portion. At the tip, the gap G between the first surfaces 20U is larger than the plate thickness F of the shuriken 2. In the holding portion, the gap G between the first surfaces 20U is smaller than the plate thickness F of the shuriken 2.

In the example shown in FIG. 3, the depth D is located in the first body 22. Of the first body portion 22, a portion closer to the front end side Za than the depth D is referred to as a first A body portion 22a, and a portion closer to the base end side Zb than the depth D is referred to as a first B body portion 22b. The call-in part 21 and the first A body part 22a are examples of the aforementioned tip part. The 1B body part 22b and the 2nd body part 23 are examples of the above-mentioned holding part.

When the shuriken 2 hits the target 1, the edge 41E of the shuriken 2 formed obliquely with respect to the target surface 10A is also the surface of the incoming portion 21 or the first body portion 22 formed obliquely with respect to the target surface 10A. , And the tip of the sword 41 is guided to the pockets 31 (32, 33) between the adjacent pins 20.

The thickness of the shuriken 2 gradually increases from the edge 41E toward the inside, and eventually becomes constant at the thickness F of the rubber plate. The gap G between the first surfaces 20U of the pins 20L and 20R is gradually reduced from the distal end side Za of the pin 20 toward the proximal end side Zb. As the sword tip of the shuriken 2 advances in the thickness direction Z, the difference between the thickness of the shuriken 2 and the gap G between the pins 20L and 20R becomes smaller. When a part of the shuriken 2 (for example, the spear 41D of the sword 41) reaches the depth D, the thickness of the shuriken 2 and the gap G between the pins 20L and 20R coincide.

Resin target 1 can be reversibly deformed. The tip of the shuriken 2 pushes the gap G of the pin 20 and stabs it slightly deeper than the depth D. At this time, the first A surface 20Ua of one pin 20L is deformed along the surface 2A of the shuriken 2 and comes into surface contact with the surface 2A. Similarly, the first A surface 20Ua of the other pin 20R is deformed along the back surface 2B of the shuriken 2 and comes into surface contact with the back surface 2B.

According to the target 1 of the shuriken of the present embodiment configured as described above, since the flat front surface 2A and the back surface 2B of the shuriken 2 are supported by the flat first surface 20U of the pin 20, the shuriken 2 is supported by the cylindrical surface. Compared to the case, the contact area C becomes larger. The shuriken 2 that hits the target 1 is easily held in a state where it is hard to fall.

Especially, this embodiment is suitable for a safe rubber shuriken. Rubber shurikens are safer than metal shurikens, but they are light and difficult to stick deeply into hard support members such as clay. According to this embodiment, even the light shuriken 2 is surely stabbed to a predetermined depth D when hit. Therefore, the shuriken 2 that hits the target 1 is easily held in a state where it is hard to fall.

This embodiment is not only when the shuriken 2 that rotates vertically in the fourth direction U hits the target 1 by the pockets 31, 32, 33 extending in the fourth to sixth directions U, V, W, respectively. Even when the shuriken 2 that is shifted obliquely in the fifth direction V or the sixth direction W hits the target 1, it is easy to hold the shuriken 2 in the state of being stuck.

The shuriken 2 flying toward the target 1 often rotates vertically in the 12 o'clock direction. When the shuriken 2 rotating in the 12 o'clock direction hits the target 1, the sword tip of the shuriken 2 is guided to the pocket 31, and the first surface 20U defining the gap G of the pocket 31 is on both sides of the front surface 2A and the back surface 2B of the shuriken 2 Hold the shuriken 2 in face contact.

Even if the shuriken 2 tilts in the 10 o'clock direction during flight, the tip of the shuriken 2 is guided to the pocket 32 extending in the fifth direction V (10 o'clock direction), and the second surface 20V of the pocket 32 is the shuriken 2 The surface 2A and the back surface 2B are brought into surface contact from both sides. Similarly, even if the shuriken 2 tilts in the 2 o'clock direction, the third surface 20W of the pocket 33 extending in the sixth direction (2 o'clock direction) comes into surface contact with the front surface 2A and the back surface 2B of the shuriken 2 from both sides.

In this embodiment, the shuriken 2 is held by the pin 20 that is reversibly deformed, so that the target paper and its supporting member are not full of holes. Can be used repeatedly while maintaining aesthetics. Each pin 20 includes first and second body portions 22 and 23 each having an XY cross section formed in a hexagonal shape. Therefore, the flat surfaces 20U, 20V, and 20W of the adjacent pins 20 are easily arranged so as to be parallel to each other. Compared to the case where the XY cross section is triangular, the corners are hard to be damaged and the pin 20 is hard to break.

Moreover, since the stress concentration at the base of the pin 20 is relaxed by the fillet portion 24, the pin 20 is not easily broken. Since the outer edge of the fillet portion 24 is hexagonal, the pins 20 can be closely arranged even if the widened fillet portion 24 is formed.

The embodiment described above is for facilitating the understanding of the present invention, and is not intended to limit the present invention. Each element included in the embodiment and its arrangement, material, condition, shape, size, and the like are not limited to those illustrated, and can be changed as appropriate. In addition, the structures shown in different embodiments can be partially replaced or combined.

For example, the XY cross section of the pin 20 may be a triangle. If the XY cross section of the pin 20 is an equilateral triangle as in the modification shown in FIG. 4, the XY cross section of the pin 20 rotates in the fourth to sixth directions U, V, and W as in the hexagonal embodiment. The shuriken 2 can be held. Although not shown, the XY cross section of the pin 20 may be a right-angled isosceles triangle. If the bases of adjacent right-angled isosceles triangles face each other and are arranged so that the opposite sides face each other, the shuriken 2 that rotates in four directions of 12:00, 1:30, 3:30, and 4:30 can be held. .

Furthermore, the XY cross section of the pin 20 may be a quadrangle, a pentagon, or an octagon. However, in the case of a quadrangle, surface contact with the shuriken 2 can be made only from two vertical and horizontal directions. The pentagon is difficult to line up without gaps. In the octagon or more, each surface becomes smaller and the contact area becomes smaller. Therefore, the XY cross section of the pin 20 is preferably a hexagon shown in FIG.

For example, one of the first and second body parts 22 and 23 shown in FIG. 1 may be omitted, or the third body part and the fourth body part of the hexagonal frustum having a different inclination angle from the first body part. A torso and the like may be further included. When the 1st trunk | drum 22 is abbreviate | omitted, the call-in part 21 becomes a front-end | tip part, and the 2nd trunk | drum 23 becomes a holding | maintenance part.

For example, the shuriken 2 may be configured to be held at the target 1 by the blade portion between the edge 41E and the hook 41D instead of the hook 41D of the sword 41. In that case, the gap G between the pins 20 </ b> L and 20 </ b> R at a predetermined depth D may be set to the thickness of the shuriken 2 blade smaller than the plate thickness F of the shuriken 2. For example, the board 10 may be three-dimensional. If the undulation of the target surface 10A is small enough to be ignored with respect to the size of the pin 20, the surface of a life-size ninja doll or the like may be configured as the target surface 10A.

DESCRIPTION OF SYMBOLS 1 ... Target of shuriken, 2 ... Shuriken, 2A ... Front surface, 2B ... Back surface, 10 ... Board, 10A ... Target surface, 10B ... Back surface, 20 ... Pin, 20L ... One pin, 20R ... Other pin, 20U ... No. 1 surface (an example of a flat surface), 20 Ua: a first surface A (an example of a first surface), 20 Ub: a surface 1B (an example of a first surface), 20 V: a second surface (an example of a flat surface), 20 Va ... 2A surface (an example of a 2nd surface), 20Vb ... 2nd surface B (an example of 2nd surface), 20W ... 3rd surface (an example of a flat surface), 20Wa ... 3A surface (an example of a 3rd surface) , 20 Wb ... 3B surface (an example of the third surface), 21 ... an inlet part (an example of a tip part), 22 ... a first body part (an example of a hexagonal frustum part), 22a ... a 1A body part (a tip part) ), 22b... 1B body part (an example of a holding part), 23... Second body part (an example of a hexagonal column part, an example of a holding part) 24 ... Fillet part, 31, 32, 33 ... Pocket, 41 ... Sword, 41D ... Spear, 41E ... Edge, 42 ... Connection part, C ... Contact area, D ... Depth from pin tip, F ... Thickness, G ... Gap, R ... First direction, S ... Second direction, T ... Third direction, U ... Fourth direction, V ... Fifth direction, W ... Sixth direction, X ... Vertical direction, Y ... Horizontal direction, Z: Thickness direction, Za: Pin distal end side, Zb: Pin proximal end side.

Claims (4)

The target of the shuriken that holds the thrown shuriken,
A board and a plurality of pins arranged on the target surface of the board,
Each of the pins has a polygonal cross section, is tapered, and has a flat surface in contact with the front and back surfaces of the shuriken in a held state. The plurality of pins are arranged at equal intervals on the target surface along a first direction, a second direction, and a third direction rotated by 120 ° about an axis perpendicular to the target surface,
Each of the pins has a first surface formed along a fourth direction rotated 90 degrees around the axis in the first direction and a fifth direction rotated 90 degrees around the axis in the second direction. A second surface formed along the third direction, and a third surface formed along the sixth direction obtained by rotating the third direction around the axis by 90 °,
In a pair of adjacent pins, the first surface of one of the pins and the first surface of the other pin are opposed to each other with a gap, and the gap is at the tip of the pin. The target of the shuriken according to claim 1, wherein the thickness of the shuriken is smaller than the thickness of the shuriken at the holding portion of the pin closer to the board than the tip portion. Each of the pins includes a hexagonal frustum or a hexagonal column shape formed by a pair of the first surfaces, a pair of the second surfaces, and a pair of the third surfaces. The target of the shuriken described. Each of the pins further includes a fillet portion that smoothly continues to the target surface,
The target of the shuriken according to claim 3, wherein the fillet portion has an outer edge formed in a hexagonal shape and is arranged without gaps on the target surface.

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