Archery cushion plunger mounting device

Abstract

By replacing a block with a plurality of holes reversed in the longitudinal direction of a handle riser, more types of cushion plunger mounting holes than cushion plunger mounting holes are obtained. A cushion plunger mounting device A includes: a block 31 including two cushion plunger mounting holes 32 for mounting a cushion plunger 41 which are deviated from the center of the block 31 in a manner to be arranged in a row in the longitudinal direction of the handle riser 21 when the block is attached to the handle riser 21, a slotted hole 22 penetrating from one side of the handle riser 21 of the archery 11 to the other side, in a manner to overlap the cushion plunger mounting holes 32 in the longitudinal direction of the archery 11 when the block 31 is attached to the handle riser 21, and a block housing hole 33 for housing the block 31, located around the slotted hole 22 on one side of the handle riser 21 without penetrating up to the other side.

Claims

1. A cushion plunger mounting device comprising: a block provided so that, when the block is attached to a handle riser of an archery bow, a plurality of cushion plunger mounting holes for mounting a cushion plunger are arranged in a row in a longitudinal direction of the handle riser; a slotted hole that extends though the handle riser by penetrating from a first side of the handle riser to a second side of the handle riser, the slotted hole is configured to be in alignment with the cushion plunger mounting holes when the block is attached to the handle riser; and a block housing hole that is located around the slotted hole, the block housing hole extends into the handle riser from the first side of the handle riser without penetrating through the handle riser to the second side of the handle riser.

2. The cushion plunger mounting device according to claim 1, wherein the cushion plunger mounting holes are deviated from a center of the block in the longitudinal direction of the handle riser.

3. The cushion plunger mounting device according to claim 2, wherein the cushion plunger mounting holes are two holes.

4. The cushion plunger mounting device according to claim 1, wherein the cushion plunger mounting holes are two holes.

5. The cushion plunger mounting device according to claim 1, wherein the block housing hole houses the block.

6. The cushion plunger mounting device according to claim 1, wherein the block housing hole is a recess in the handle riser that retains the block.

Description

BRIEF DESCRIPTION OF DRAWINGS

(1) FIG. 1 is a front view of the whole archery bow according to an embodiment of the present invention.

(2) FIG. 2 is a fragmentary enlarged front view of the handle riser of the archery bow according to the embodiment of the present invention.

(3) FIG. 3 is a fragmentary enlarged perspective view of the front side of the cushion plunger mounting part of the handle riser according to the embodiment of the present invention.

(4) FIG. 4 is a fragmentary enlarged perspective view of the back side of the cushion plunger mounting part of the handle riser according to the embodiment of the present invention.

(5) FIG. 5 is a perspective view of the cushion plunger mounting block according to the embodiment of the present invention.

(6) FIG. 6 is a fragmentary enlarged perspective view of the back side of the cushion plunger mounting part of the handle riser according to the embodiment of the present invention, in which the cushion plunger mounting block is fitted to the back side.

(7) FIG. 7 is a fragmentary enlarged perspective view of the back side of the cushion plunger mounting part of the handle riser according to the embodiment of the present invention, in which the cushion plunger mounting block is fitted to the back side upside down with respect to the one shown in FIG. 6 in the longitudinal direction of the handle riser.

(8) FIG. 8 is a fragmentary enlarged perspective view of the front side of the cushion plunger mounting part of the handle riser according to the embodiment of the present invention, in which the cushion plunger mounting block is fitted to the back side as shown in FIG. 6.

(9) FIG. 9 is a fragmentary enlarged perspective view of the front side of the cushion plunger mounting part of the handle riser according to the embodiment of the present invention, in which the cushion plunger mounting block is fitted to the back side upside down with respect to the one shown in FIG. 8 in the longitudinal direction of the handle riser as shown in FIG. 7.

(10) FIG. 10 is an explanatory view which shows the eye height position, the finger hooking position, the position of the sighting device, and the elevation angle of the pushing hand when the archer launches an arrow.

(11) FIG. 11 is an explanatory view which shows the relation among the archer's eye height position (archer's height, distance between the eyes and jaw, finger hooking height), the height position of the sighting device, and the height position of the target (fixed).

DESCRIPTION OF EMBODIMENTS

(12) An embodiment will be described referring to FIGS. 1 to 9.

(13) Here, 11 denotes archery bow, 21 denotes a handle riser, and 12 denotes a limb. In the archery bow 11, the limbs 12 are attached to each of the ends of the handle riser 21 located in the center. 41 denotes a cushion plunger, and 211 denotes a grip part. The grip part 211 is located in the center of the handle riser 21.

(14) 22 denotes a slotted hole. The slotted hole 22 extends along the longitudinal direction of the handle riser 21 of the archery bow 11, penetrating from the front side of the handle riser 21 as one side of the handle riser 21 of the archery bow 11 to the back side of the handle riser 21 as its other side.

(15) The slotted hole 22 measures 28 mm in length and 11 mm in width in this embodiment.

(16) The slotted hole 22 is made in the handle riser 21 body in the lengthwise direction, namely in the longitudinal direction of the handle riser 21, on the front side of the handle riser 21 so that the cushion plunger 41 can be adjusted only in the lengthwise direction, namely in the longitudinal direction of the handle riser 21.

(17) 23 denotes a block housing hole. The block housing hole 23 has a larger size including the slotted hole 22 and is formed with a concave cross section by grinding the surface of the back side of the handle riser 21 as one side of the handle riser 21, though it does not penetrate up to the front side of the handle riser 21 as the other side. The block housing hole 23 houses a block 31.

(18) The block housing hole 23 has a square shape on the surface of one side of the handle riser 21. In this embodiment, it measures 34 mm in length and width. The slotted hole 22 is made in the center of the block housing hole 23 in the longitudinal direction of the handle riser 21.

(19) The margins from both the ends of the slotted hole 22 to the edges of the block housing hole 23 each measure 3 mm in this embodiment.

(20) 24 denotes a block fixing part. Block fixing parts 24 are provided as internally threaded holes on the bottom of the block housing hole 23 on both sides with the slotted hole 22 between them.

(21) 31 denotes a block. 32 denotes a cushion plunger mounting hole.

(22) In the block 31, a plurality of cushion plunger mounting holes 32 for mounting the cushion plunger 41 are arranged in a row in the center as internally threaded holes. The cushion plunger mounting holes 32 are arranged in the longitudinal direction of the handle riser 21 when mounted on the handle riser 21 of the archery bow 11.

(23) The cushion plunger mounting holes 32 are located in a manner to overlap the slotted hole 22 when the block 31 is mounted on the handle riser 21.

(24) In this embodiment, two cushion plunger mounting holes 32 are provided.

(25) 33 denotes a block mounting hole. Block mounting holes 33 are provided as internally threaded holes on both sides with the cushion plunger mounting holes 32 between them.

(26) After the block 31 is placed in the block housing hole 23, the block mounting holes 33 and the block fixing parts 24 are laid one upon the other and bolts are passed through the handle riser 21 to fix the block 31.

(27) The diameter of the internally threaded holes should be 6 to 15 mm; in this embodiment, the internally threaded holes have a diameter of 11 mm.

(28) In this embodiment, the block 31 has two cushion plunger mounting holes 32. Of the two cushion plunger mounting holes 32, the one nearer to the edge of the block 31 is located at the position of 3 mm from the edge of the block 31. Therefore, as shown in FIG. 5 and other figures, the margin from the cushion plunger mounting hole 32 nearer to the edge to the edge of the block 31 is 3 mm.

(29) The diameter of the cushion plunger mounting hole 32 nearer to the edge as an internally threaded hole is 11 mm. The cushion plunger mounting hole 32 nearer to the center is spaced 1 mm from the cushion plunger mounting hole 32 nearer to the edge and has a diameter of 11 mm.

(30) Therefore, the distance between the cushion plunger mounting hole 32 nearer to the center and the edge of the block 31 is 8 mm.

(31) The two cushion plunger mounting holes 32 in the block 31 are positioned eccentrically in the longitudinal direction of the handle riser 21. In this embodiment, the cushion plunger mounting holes 32 are deviated from the center of the block 31 in the longitudinal direction of the handle riser 21 and not symmetrical.

(32) The block 31, block housing hole 23 and so on constitute a cushion plunger mounting device A.

(33) By replacing the block 31 in the block housing hole 23 with the cushion plunger mounting holes 32 reversed in the longitudinal direction of the handle riser 21, more types of cushion plunger mounting holes 32 than the number of provided cushion plunger mounting holes 32 can be provided in the slotted hole 22.

(34) In this embodiment, since two cushion plunger mounting holes 32 are provided, by replacing the block 31 in the block housing hole 23 with the cushion plunger mounting holes 32 reversed in the longitudinal direction of the handle riser 21, four types of cushion plunger mounting holes 32 are provided in the slotted hole 22.

(35) Therefore, by turning the block 31 upside down and placing it in the block housing hole 23, four types of positions of cushion plunger mounting holes 32 can be provided.

(36) The block 31 is turned upside down and placed in the block housing hole 23. One of the two cushion plunger mounting holes 32 exposed from the slotted hole 22 is selected and the cushion plunger 41 is mounted above the grip part 211 of the handle riser 21 of the archery bow 11.

(37) In FIG. 10, 51 denotes an archer, 52 denotes an arrow, 53 denotes a finger hooking position, 54 denotes the height of the eyes, 9 denotes a sighting device, 56 denotes the pushing hand of the archer, and 57 denotes the horizon plane. Angle G indicates the elevation angle of the pushing hand, which is the angle between pushing hand virtual line 56a and horizon plane virtual line 57a. The sighting device 9 can be moved up and down freely and each archer can adjust its height.

(38) For a person with a relatively short distance between the eyes and jaw (A1), a person with a high finger hooking position (A2) or a short-statured person (A3), if the person launches the arrow 52 with the sighting device 9 at the standard height position (9C), since the height of the target 55 is fixed (130 cm), the arrow will fly more downward than usual. Therefore, when the setting position of the cushion plunger 41 is fixed as in the past, the height of the sighting device 9 must be lowered (9A) to adjust the flying direction of the arrow 52.

(39) In this case, the position of the cushion plunger mounting hole 32 used to mount the cushion plunger 41 is made higher to raise the cushion plunger 41 and arrow rest so that the arrow trajectory can be adjusted upward without changing the height of the sighting device 9 (fine adjustment of the height of the sighting device may be made about 0.1 mm to 1.0 mm by the archer during a game). Therefore, the elevation angle G of the pushing hand 56 can be decreased.

(40) Similarly, in the case of a long-distance game, the position of the cushion plunger mounting hole 32 used to mount the cushion plunger 41 is made higher in advance. Consequently, the elevation angle G of the pushing hand 56 can be optimized.

(41) On the other hand, for a person with a relatively long distance between the eyes and jaw (B1), a person with a low finger hooking position (B2) or a tall person (B3), if the person launches the arrow 52 with the sighting device 9 at the standard height position (9C), similarly the arrow 52 will fly more upward than usual. Therefore, the height position of the sighting device 9 must be raised (9B) to adjust the flying direction of the arrow 52.

(42) In this case, the position of the cushion plunger 41 and arrow rest can be adjusted so as to be lowered to make the arrow fly downward without changing the position of the sighting device 9.

(43) In this embodiment, by setting the pivot point at a position lower than the center of the bow (longitudinal direction), the arrow setting position can be made nearer to the center of the bow. Accordingly, when launching the arrow, power can be transmitted to the arrow smoothly.

(44) Furthermore, in the recent years, only 70 m long-distance games have been played in the Olympics Games and FITA certified events. Therefore, the cushion plunger 4-step mounting device according to the present invention will exhibit its power.

REFERENCE NUMERALS

(45) 11 . . . archery bow 12 . . . limb 21 . . . handle riser 211 . . . grip part 22 . . . slotted hole 31 . . . block 32 . . . cushion plunger mounting hole 33 . . . block mounting hole 41 . . . cushion plunger A . . . cushion plunger mounting device