Back clamping force release device

Abstract

The utility model discloses a back clamping force release device which comprises a grip (1), a connecting part (11) is arranged on the front portion of the grip (1), and a containing space (1111) is arranged on the front portion of the connecting part (11). The rear part of the movable seat (2) is hinged to the connecting part (11), and the front part of the movable seat (2) is provided with a movable space (221); the string hook (3) is hinged in the movable space (221), and a hook part of the string hook (3) is exposed out of the movable space (221); the limiting block (4) is installed in the containing space (1111), and the front portion of the limiting block (4) is provided with a limiting table (41); the limiting device is characterized in that the number of the limiting blocks (4) is two, and the limiting blocks (4) are marked as the first limiting block (4a) and the second limiting block (4b) respectively and are arranged side by side in the left-right direction in a staggered mode, so that the height difference exists between the limiting tables (41) of the first limiting block (4a) and the second limiting block (4b). Compared with the prior art, the back clamping force release device is simple to process.

Description

Technical Field

[0001] The utility model relates to the technical field of bows and arrows, in particular to a back-clamping force release. Background Art

[0002] Archery is a popular sport. During archery, the bowstring needs to be directly pulled by fingers. However, due to the small diameter and large tension of the bowstring, it is extremely easy to cause damage to the human body. In order to facilitate pulling the bowstring and reduce damage to the human body, the release has emerged and has become one of the essential accessories for compound bows. Generally, the wrist strap of the release is wound around the wrist, or the handle of the release is directly held in the hand. The string hook of the release is used to hook the bowstring, and then force is applied to the release to pull the bowstring open. Then, the arrow is released by pressing the trigger with a finger. Therefore, using a release can not only protect the fingers but also improve the accuracy of the compound bow during archery.

[0003] The release methods of the release used for compound bows are mainly divided into two categories:

[0004] One is to achieve release by pressing the trigger with a finger. For details, reference can be made to the US patent "Trigger-Based Archery Release Device and Method" with the patent application number US201916402873.

[0005] The other is a back-clamping force release. That is, after the archer draws the bow, they squeeze their shoulder blades together, or in other words, "tighten their back". Since the archer holds the release in their hand, the backward movement of the shoulder and back will move the hand, which in turn causes a slight rotation of the release. This slight rotation is sufficient to move the release device, thereby releasing the D-loop to complete archery. For details, reference can be made to the Chinese patent "A Handheld Bowstring Release" with the patent application number CN 202223561402.8.

[0006] However, for the above-mentioned back-clamping force release, first, it is necessary to set a clamping groove on the gear support body, and the processing is complex. Second, the size of the warning sound mainly depends on clamping grooves with different depths, and stepless adjustment cannot be achieved. Summary of the Utility Model

[0007] The first technical problem to be solved by the utility model is to provide a back-clamping force release with simple processing according to the current situation of the prior art.

[0008] The second technical problem to be solved by the utility model is to provide a back-clamping force release that can steplessly adjust the size of the warning sound.

[0009] The technical solution adopted by the utility model to solve the above first technical problem is: A back-clamping force release, comprising

[0010] The grip has a connecting part at the front, and the front of the connecting part has a receiving space;

[0011] The movable seat is hinged to the connecting part at the rear, and has a movable space at the front;

[0012] The string hook is hinged in the movable space and its hook part is exposed outside the movable space; and

[0013] The limiting block is installed in the receiving space, and has a limiting platform at the front for limiting the rear part of the string hook;

[0014] It is characterized in that: the number of the limiting blocks is two, which are respectively recorded as the first limiting block and the second limiting block. The first limiting block and the second limiting block are arranged side by side and staggered in the left - right direction, so that there is a height difference between the limiting platforms of the first limiting block and the second limiting block;

[0015] During the rotation of the grip, the string hook holding the bowstring can rotate relative to the movable seat under the pulling force of the bowstring, and drive the movable seat to rotate relative to the grip, so that the back - clip force release device has at least three working states:

[0016] In the aiming state, the rear part of the string hook is limited on the limiting platform of the first limiting block;

[0017] In the warning state, the rear part of the string hook is limited on the limiting platform of the second limiting block;

[0018] In the shooting state, the rear part of the string hook moves upward to disengage from the limitation of the limiting block, so that the bowstring disengages from the limitation of the hook part of the string hook.

[0019] In order to ensure the stability of the string hook in the natural state, the bottom side of the connecting part has a first supporting part, and the bottom side of the movable space has a second supporting part;

[0020] In the natural state without external force acting on the string hook, the rear part of the string hook is placed on the second supporting part, and the middle part of the movable seat is placed on the first supporting part;

[0021] In the working state where the bowstring acts on the string hook, under the pulling force of the bowstring, the rear part of the string hook moves upward to disengage from the second supporting part, and the middle part of the movable seat moves upward to disengage from the first supporting part.

[0022] In order to facilitate the limiting cooperation between the string hook and the second supporting part and the limiting platform, the bottom side and the top side of the rear part of the string hook respectively have a first limiting surface and a second limiting surface, and the included angle between the first limiting surface and the second limiting surface is an acute angle;

[0023] In the natural state, the first limiting surface abuts against the second supporting part;

[0024] In the aiming state, the second limiting surface abuts against the limiting platform of the first limiting block;

[0025] In the warning state, the second limiting surface abuts against the limiting platform of the second limiting block.

[0026] In order to facilitate the return of the string hook to the natural state after shooting, the top surface of the second supporting portion is denoted as the supporting surface, a receiving groove is formed in the supporting surface, a magnet is received in the receiving groove, and the string hook is made of a ferromagnetic material;

[0027] In the natural state, the rear portion of the string hook is adsorbed by the magnet;

[0028] In the working state, the rear portion of the string hook is separated from the adsorption of the magnet.

[0029] In order to ensure the adsorption force between the rear portion of the string hook and the magnet in the natural state, in the natural state, the first limiting surface is attached to the supporting surface.

[0030] In order to further solve the above-mentioned second technical problem, each of the limiting blocks is rotatably installed in the accommodating space, and the back clip force release device further includes

[0031] an adjusting member, corresponding to the limiting block, for driving the corresponding limiting block to rotate about its own axis relative to the connecting portion; and

[0032] a locking member, corresponding to the limiting block, for locking the corresponding limiting block.

[0033] In order to realize the driving of the limiting block by the adjusting member, the rear portion of the limiting block is fan-shaped, and the surface has racks distributed along its circumferential direction;

[0034] A fixing seat is installed in the accommodating space. The front side of the fixing seat has a fan-shaped groove for accommodating the rear portion of the limiting block. A strip-shaped groove corresponding to the adjusting member and tangent to the fan-shaped groove is formed in the circumferential wall of the fan-shaped groove;

[0035] Each of the adjusting members is a screw, and the screw is slidably installed in the corresponding strip-shaped groove and meshes with the rack of the corresponding limiting block.

[0036] In order to facilitate the rotation of the adjusting member, an operation hole communicating with the strip-shaped groove is formed at the top of the fixing seat.

[0037] In order to realize the locking of the limiting block by the locking member, an installation hole corresponding to the locking member and communicating with the fan-shaped groove is formed at the top of the fixing seat. Each of the locking members is a screw, and the screw is threadedly connected in the corresponding installation hole, and the tail of the screw abuts against the corresponding limiting block.

[0038] To ensure that the string hook can be in limit cooperation with the limit platforms of the two limit blocks in sequence during the rotation process following the movable seat, the rotation axis of the movable seat is consistent with the rotation axes of the respective limit blocks.

[0039] Compared with the prior art, the advantages of the present utility model are as follows:

[0040] (1) By arranging two limit blocks side by side and offset in the left - right direction, a height difference exists between the limit platforms of the first limit block and the second limit block. When the rear part of the string hook falls from the limit platform of the first limit block to the limit platform of the second limit block, a ticking sound will be emitted as a warning, without the need to additionally set a stepped portion on the limit block, and the processing is simple;

[0041] (2) By rotatably mounting the limit block in the accommodating space, setting an adjusting member to drive the rotation of the limit block, and setting a locking member to lock the limit block, in this way, the height difference between the limit platforms of the first limit block and the second limit block can be adjusted steplessly, and thus the warning sound size can be adjusted steplessly. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a three - dimensional structural schematic diagram of an embodiment of the back - clamping force release device of the present utility model;

[0043] Figure 2 is Figure 1 a three - dimensional exploded schematic diagram of;

[0044] Figure 3 is Figure 2 a three - dimensional structural schematic diagram of the fixed seat in;

[0045] Figure 4 is Figure 2 a three - dimensional structural schematic diagram of the movable seat in;

[0046] Figure 5 is a left - view of the embodiment of the back - clamping force release device of the present utility model in a natural state;

[0047] Figure 6 is Figure 5 a longitudinal sectional view of;

[0048] Figure 7 is Figure 5 a left - view of the back - clamping force release device in a sighting state after switching;

[0049] Figure 8 is Figure 7 a longitudinal sectional view of;

[0050] Figure 9 is Figure 7 a left - view of the back - clamping force release device in a warning state after switching;

[0051] Figure 10 is Figure 9 a longitudinal sectional view of;

[0052] Figure 11 is Figure 9 a left view after the back clip force release is switched to the firing state in;

[0053] Figure 12 is Figure 11 a longitudinal sectional view of. Specific embodiments

[0054] The present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0055] In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present utility model. However, these terms are used only for the purpose of convenient description and are determined based on the example orientations shown in the drawings. Since the embodiments disclosed by the present utility model can be arranged in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite or consistent with the direction of gravity.

[0056] As Figures 1 to 12 shown, it is a preferred embodiment of the back clip force release of the present utility model. The back clip force release includes a grip 1, a movable seat 2, a string hook 3, a limit block 4, an adjusting member 5, and a locking member 6.

[0057] Among them, the front part of the grip 1 has a connecting portion 11. The front part of the connecting portion 11 has two connecting pieces 111 arranged at intervals left and right. A receiving space 1111 is formed between the two connecting pieces 111. The bottom side of the outside of each connecting piece 111 has a first support portion 1112. A fixing seat 12 is provided at the rear of the receiving space 1111. The rear part of the fixing seat 12 is connected to the two connecting pieces 111 through a first pin shaft 120 extending horizontally. The front side of the fixing seat 12 has a sector-shaped groove 121. Two strip-shaped grooves 122 arranged at intervals left and right and corresponding to the adjusting member 5 are provided on the peripheral wall of the sector-shaped groove 121. Each strip-shaped groove 122 is tangent to the above-mentioned sector-shaped groove 121. Two operation holes 123 corresponding to the strip-shaped grooves 122 one by one and communicating with the corresponding strip-shaped grooves 122 are provided at the top of the fixing seat 12. Two mounting holes 124 arranged at intervals left and right and corresponding to the locking member 6 one by one are also provided at the top of the fixing seat 12. Each mounting hole 124 communicates with the above-mentioned sector-shaped groove 121.

[0058] The movable seat 2 includes two articulated arms 21 arranged at intervals on the left and right, and a connecting bar 22 connected between the front ends of the two articulated arms 21. Specifically, each articulated arm 21 corresponds to the above-mentioned connecting piece 111 one by one, and is articulated outside the corresponding connecting piece 111 through a second pin shaft 210. In this embodiment, the two articulated arms 21 share the same second pin shaft 210; the top of the connecting bar 22 has a concave movable space 221, and the part of the connecting bar 22 located on the bottom side of the movable space 221 is denoted as the second support portion 222, the top surface of the second support portion 222 is denoted as the support surface 2221, and a receiving groove 2222 is formed on the support surface 2221, and a magnet 2223 is received in the receiving groove 2222.

[0059] The string hook 3 is made of ferromagnetic material and is articulated in the above-mentioned movable space 221 through a laterally extending third pin shaft 30, and its hook portion is exposed outside the movable space 221 for hooking the bowstring. Specifically, the bottom side and the top side of the rear part of the string hook 3 respectively have a first limiting surface 31 and a second limiting surface 32, and the included angle between the first limiting surface 31 and the second limiting surface 32 is an acute angle.

[0060] The number of the limiting blocks 4 is two, and they are arranged side by side in the front part of the above-mentioned accommodating space 1111 in the left-right direction. Specifically, each limiting block 4 is sleeved on the outer periphery of the above-mentioned second pin shaft 210 so that it can rotate in the accommodating space 1111, and its rotation axis is consistent with the rotation axis of the movable seat 2; the front part of each limiting block 4 has a limiting platform 41 for limiting the rear part of the string hook 3; the rear part of each limiting block 4 is fan-shaped and is accommodated in the above-mentioned fan-shaped groove 121, and its surface has a rack 42 distributed along its circumferential direction.

[0061] The adjusting members 5 correspond to the above-mentioned limiting blocks 4 one by one and are used to drive the corresponding limiting blocks 4 to rotate relative to the connecting portion 11 around the second pin shaft 210. In this embodiment, each adjusting member 5 is a screw, and the screw can be slidably installed in the corresponding strip-shaped groove 122 and meshes with the rack 42 of the corresponding limiting block 4. The user can drive the adjusting member 5 to rotate by passing a tool through the operation hole 123, so as to drive the limiting block 4 to rotate. Of course, other adjusting members such as gears can also be used to achieve the same effect.

[0062] The locking members 6 correspond to the above-mentioned limiting blocks 4 and are used to lock the corresponding limiting blocks 4. In this embodiment, each locking member 6 is a screw, and the screw is threadedly connected in the corresponding mounting hole 124, and the tail of the screw abuts against the corresponding limiting block 4. Of course, other locking members such as lock buckles can also be used to achieve the same effect.

[0063] In this embodiment, the two limiting blocks 4 are respectively denoted as the first limiting block 4a and the second limiting block 4b, and the first limiting block 4a and the second limiting block 4b are arranged in a staggered manner in the left-right direction, so that there is a height difference between the limiting platforms 41 of the first limiting block 4a and the second limiting block 4b.

[0064] In the natural state without external force acting on the string hook 3, as Figure 5 and Figure 6 shown, the rear part of the string hook 3 is placed on the second supporting part 222 and adsorbed by the magnet 2223 (the first limiting surface 31 is attached to and abuts against the supporting surface 2221), and the middle part of the movable seat 2 is placed on the first supporting part 1112;

[0065] In the working state where the bowstring acts on the string hook 3, the string hook 3 holding the bowstring can rotate relative to the movable seat 2 under the pulling force of the bowstring, and drive the movable seat 2 to rotate relative to the grip 1, so that the rear part of the string hook 3 is lifted upward from the second supporting part 222 and separated from the adsorption of the magnet 2223, and the middle part of the movable seat 2 is lifted upward from the first supporting part 1112; and, during the rotation of the grip 1, the string hook 3 holding the bowstring can continue to rotate relative to the movable seat 2 under the pulling force of the bowstring, and drive the movable seat 2 to continue to rotate relative to the grip 1, so that the back clip force release device has at least three working states:

[0066] In the aiming state, as Figure 7 and Figure 8 shown, the rear part of the string hook 3 is limited on the limiting platform 41 of the first limiting block 4a (the second limiting surface 32 abuts against the limiting platform 41 of the first limiting block 4a);

[0067] In the warning state, as Figure 9 and Figure 10 shown, the rear part of the string hook 3 is limited on the limiting platform 41 of the second limiting block 4b (the second limiting surface 32 abuts against the limiting platform 41 of the second limiting block 4b);

[0068] In the shooting state, as Figure 11 and Figure 12 shown, the rear part of the string hook 3 is lifted upward from the limit of the limiting block 4, so that the bowstring is separated from the limit of the hook part of the string hook 3.

[0069] The working principle of this embodiment is as follows:

[0070] (1) Before use, first loosen the locking member 6 to release the locking of the limiting block 4, and then drive the adjusting member 5 to rotate by passing a tool through the operation hole 123 to drive the limiting block 4 to rotate, so as to adjust the height difference between the limiting platforms 41 of the first limiting block 4a and the second limiting block 4b, and finally tighten the locking member 6 to restore the locking of the limiting block 4;

[0071] (2) When in use,

[0072] ① In the natural state, as Figure 5 and Figure 6 shown, the rear part of the string hook 3 is placed on the second support part 222 and adsorbed by the magnet 2223, and the middle part of the movable seat 2 is placed on the first support part 1112;

[0073] ② When it is necessary to pull the bowstring, the bowstring is held by the hook part of the string hook 3, and the grip 1 is held and pulled backward. The string hook 3 holding the bowstring can rotate relative to the movable seat 2 under the pulling force of the bowstring, and drive the movable seat 2 to rotate relative to the grip 1, so that the rear part of the string hook 3 is disengaged from the second support part 222 upward and from the adsorption of the magnet 2223, and the middle part of the movable seat 2 is disengaged from the first support part 1112 upward until the rear part of the string hook 3 is limited on the limiting platform 41 of the first limiting block 4a, and the string hook 3 stops rotating. At this time, as Figure 7 and Figure 8 shown, the back-clamping force release is in the aiming state;

[0074] Then, the angle of the grip 1 is slightly rotated. The string hook 3 holding the bowstring can continue to rotate relative to the movable seat 2 under the pulling force of the bowstring, and drive the movable seat 2 to continue to rotate relative to the grip 1 until the rear part of the string hook 3 is limited on the limiting platform 41 of the second limiting block 4b, and the string hook 3 stops rotating. At this time, as Figure 9 and Figure 10 shown, the back-clamping force release is in the warning state. Since the string hook 3 rotates rapidly in the above process, a ticking sound will be emitted when its rear part falls on the limiting platform 41 of the second limiting block 4b as a warning;

[0075] Finally, the angle of the grip 1 is continuously rotated. The string hook 3 holding the bowstring can continue to rotate relative to the movable seat 2 under the pulling force of the bowstring, and drive the movable seat 2 to continue to rotate relative to the grip 1. In this process, the rear part of the string hook 3 will be disengaged from the limit of the limiting block 4 upward until the bowstring is disengaged from the limit of the hook part of the string hook 3. At this time, as Figure 11 and Figure 12 shown, the back-clamping force release is in the shooting state, and the bowstring shoots the bow and arrow to complete the shooting action;

[0076] ③ After shooting, since the string hook 3 is no longer affected by the bowstring, it will return to the natural state as Figure 5 and Figure 6 shown under the adsorption of the magnet 2223.

Claims

1. A back-clamp force release device, comprising A handle (1) having a connecting portion (11) at the front, and a receiving space (1111) at the front of the connecting portion (11); A movable seat (2), the rear portion of which is hinged on the connecting portion (11), and the front portion of which has a movable space (221); A string hook (3) is hinged in the activity space (221) and its hook portion is exposed outside the activity space (221); and A limit block (4) is installed in the accommodating space (1111), and has a limit platform (41) at the front for limiting the rear of the string hook (3); It is characterized in that: The number of the limit blocks (4) is two, which are respectively referred to as a first limit block (4a) and a second limit block (4b); the first limit block (4a) and the second limit block (4b) are arranged side by side and staggered in the left-right direction, so that there is a height difference between the limit platforms (41) of the first limit block (4a) and the second limit block (4b); During the rotation of the handle (1), the string hook (3) holding the bowstring can rotate relative to the movable seat (2) under the pulling force of the bowstring, and drive the movable seat (2) to rotate relative to the handle (1), so that the back-clamping force release device has at least three working states: In the aiming state, the rear part of the string hook (3) is limited on the limiting platform (41) of the first limiting block (4a); In the early warning state, the rear part of the string hook (3) is limited on the limit platform (41) of the second limit block (4b); In the shooting state, the rear part of the string hook (3) is disengaged from the limit position of the limit block (4) upwards, so that the bowstring is disengaged from the limit position of the hook part of the string hook (3).

2. The back clip force release device according to claim 1, characterized in that: The bottom side of the connecting portion (11) has a first supporting portion (1112), and the bottom side of the activity space (221) has a second supporting portion (222); In a natural state where no external force acts on the string hook (3), the rear portion of the string hook (3) rests on the second support portion (222), and the middle portion of the movable seat (2) rests on the first support portion (1112); When the bowstring acts on the string hook (3) in a working state, under the tension of the bowstring, the rear portion of the string hook (3) is disengaged upward from the second support portion (222), and the middle portion of the movable seat (2) is disengaged upward from the first support portion (1112).

3. The back-pressure release device according to claim 2, wherein: The bottom side and top side of the rear part of the string hook (3) respectively have a first limiting surface (31) and a second limiting surface (32), and the angle between the first limiting surface (31) and the second limiting surface (32) is an acute angle; In a natural state, the first limiting surface (31) abuts against the second supporting portion (222); In the aiming state, the second limiting surface (32) abuts against the limiting platform (41) of the first limiting block (4a); In the early warning state, the second limiting surface (32) abuts against the limiting platform (41) of the second limiting block (4b).

4. The back clip force release device according to claim 3, characterized in that: The top surface of the second support part (222) is denoted as the support surface (2221). An accommodation groove (2222) is formed on the support surface (2221), and a magnet (2223) is accommodated in the accommodation groove (2222). The string hook (3) is made of ferromagnetic material; In the natural state, the rear part of the string hook (3) is adsorbed by the magnet (2223); In the working state, the rear part of the string hook (3) is separated from the adsorption of the magnet (2223).

5. The back clip force release device according to claim 4, characterized in that: In the natural state, the first limiting surface (31) is attached to the support surface (2221).

6. The back clip force release device according to any one of claims 1 to 5, characterized in that: Each of the limiting blocks (4) is rotatably installed in the accommodation space (1111). The back clip force release device further includes an adjusting member (5), corresponding to the limiting block (4), for driving the corresponding limiting block (4) to rotate around its own axis relative to the connecting part (11); and a locking member (6), corresponding to the limiting block (4), for locking the corresponding limiting block (4).

7. The back clip force release device according to claim 6, characterized in that: The rear part of the limiting block (4) is fan-shaped, and a rack (42) is arranged on the surface along its circumferential direction; A fixed seat (12) is installed in the accommodation space (1111). The front side of the fixed seat (12) has a fan-shaped groove (121) for accommodating the rear part of the limiting block (4). A strip-shaped groove (122) corresponding to the adjusting member (5) and tangent to the fan-shaped groove (121) is formed on the circumferential wall of the fan-shaped groove (121); Each of the adjusting members (5) is a screw, which can be slidably installed in the corresponding strip-shaped groove (122) and meshes with the rack (42) of the corresponding limiting block (4).

8. The back clip force release device according to claim 7, wherein: An operation hole (123) communicating with the strip-shaped groove (122) is formed at the top of the fixed seat (12).

9. The back clip force release device according to claim 7, wherein: An installation hole (124) corresponding to the locking member (6) and communicating with the fan-shaped groove (121) is formed at the top of the fixed seat (12). Each of the locking members (6) is a screw, which is threadedly connected in the corresponding installation hole (124), and the tail of the screw abuts against the corresponding limiting block (4).

10. The back clip force release device according to claim 6, characterized in that: The rotation axis of the movable seat (2) is consistent with the rotation axis of each of the limiting blocks (4).

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