Arrow rest driven by bow piece

Abstract

An arrow rest driven by a bow piece is improved on the basis of an existing main body, an existing main shaft, an existing bracket and the like, namely the arrow rest further comprises a shell, the shell is arranged at the other end, exposed out of the main body, of the main shaft in a sleeved mode, and the other end of a pull rope is positioned on the shell. The gear is accommodated in the shell and is fixed on the main shaft; the gear block is located in the shell and meshed with the gear in a one-way mode so that only the gear can rotate in the one-way mode relative to the gear block in the bracket toppling direction, and when the pull rope is in a tightened state along with the bow piece, the gear block rotates along with the shell and can drive the gear to synchronously rotate in the bracket toppling direction; when the pull rope is in a loose state along with the bow piece, the gear can drive the gear block to synchronously rotate towards the vertical direction of the bracket under the action of restoring force of the torsional spring. By the adoption of the structure, the using requirement of the arrow rest can be met, and meanwhile rebounding after the bracket topples can be effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of bow accessories, in particular to an arrow rest driven by a bow limb. Background Art

[0002] An arrow rest is an auxiliary component used to support the arrow shaft to assist the arrow in shooting. Currently, most bows are equipped with an arrow rest. The driving methods of this arrow rest usually include bow limb (also called bow arm) driving and bowstring driving. For example, a bow limb-driven arrow rest is disclosed in the document with the Chinese patent authorization publication number CN204666039U. Another example is that a bowstring-driven arrow rest is disclosed in the document with the Chinese patent authorization publication number CN218155748U. This arrow rest includes a main body with an inner cavity and a shaft hole communicating with the inner cavity; a main shaft, a part of which is inserted into the shaft hole of the main body and can rotate relative to the main body; a bracket fixed at one end of the main shaft exposed outside the above-mentioned main body, and having a groove for placing the arrow shaft in the middle of the bracket; a shaft wheel located in the inner cavity and fixed on the main shaft to rotate with the main shaft; a torsion spring acting on the main shaft to make the main shaft always have a tendency to rotate towards the side where the bracket falls down; a pull rope, one end of which is connected to the main shaft and the other end is used to connect to the bowstring; a guiding hole extending in the up-down direction is opened at the top of the inner cavity, and a positioning column that can move up and down is installed in the guiding hole; at least part of the shaft wheel is located below the positioning column to constrain the positioning column in the guiding hole. Adjacent blocking parts and convex parts that can cooperate with the positioning column are provided on the circumferential surface of the shaft wheel. When the bracket is erected and in the state of placing the arrow shaft, the blocking part abuts against the side surface of the positioning column to prevent the shaft wheel and the main shaft from rotating towards the side where the bracket falls down, and the convex part is located below the positioning column; when the bracket changes from the state of placing the arrow shaft to the upright state, the convex part abuts against the lower end surface of the positioning column to push the positioning column to move upward; when the bracket falls down, the acting force of the torsion spring can make the blocking part on the shaft wheel avoid the resistance of the freely falling positioning column.

[0003] And in order to prevent rebound in the state where the bracket falls down, a circumferentially extending long groove is provided on the inner wall of the inner cavity of the above-mentioned document. The depth of the long groove gradually becomes shallower towards the side where the bracket falls down. A roller column protruding from the circumferential surface of the shaft wheel is installed and can roll along the bottom of the long groove. When the bracket is in the falling position, due to the long groove becoming shallower and shallower, the friction force between the roller column and the bottom of the long groove becomes larger and larger, so that the rebound of the bracket can be effectively prevented. On the contrary, when the roller column rolls to the lower end of the long groove, the bracket is in the upright state (arrow shooting state). Due to the deeper depth of the long groove, the friction force between the roller column and the bottom of the long groove is smaller, and it can roll smoothly to ensure the smooth progress of arrow shooting.

[0004] Looking at the existing arrow rests comprehensively, although their structures are various and their driving methods are also different, they all need to meet at least two use states of the bracket: the falling down (tipping) state and the upright arrow shooting state. Summary of the Invention

[0005] The technical problem to be solved by the present utility model is to provide a novel structure of a bow - limb - driven arrow rest that can also meet the usage requirements of a bracket for the prior art.

[0006] The technical solution adopted by the present utility model to solve the above - mentioned technical problem is as follows: A bow - limb - driven arrow rest includes:

[0007] A main body, in which an inner cavity and a shaft hole communicating with the inner cavity are formed;

[0008] A main shaft, a part of which is inserted into the shaft hole of the above - mentioned main body and can rotate relative to the main body;

[0009] A bracket, fixed to one end of the main shaft exposed outside the above - mentioned main body, and a groove for placing an arrow shaft is provided in the middle of the bracket;

[0010] A swing block, located in the inner cavity of the main body and fixed on the main shaft to rotate together with the main shaft;

[0011] A limiting structure, cooperating between the swing block and the inner cavity of the main body to limit the bracket to be in a fallen state and an upright state;

[0012] A torsion spring, one end of which is fixed on the main body, and the other end acts on the main shaft, so that the main shaft rotates to make the bracket always tend to be in an upright state;

[0013] A pull rope, one end of which is used to connect to a bow limb;

[0014] It is characterized by further including:

[0015] A housing, sleeved on the other end of the main shaft exposed outside the main body, and the other end of the pull rope is positioned on the housing;

[0016] A gear, accommodated in the housing and fixed on the main shaft;

[0017] A gear block, located inside the housing and meshing with the gear unidirectionally, to only allow the gear to rotate unidirectionally relative to the gear block in the direction of the bracket falling, and when the pull rope is in a taut state with the bow limb, the gear block rotates with the housing and can drive the gear to rotate synchronously in the direction of the bracket falling; when the pull rope is in a loose state with the bow limb, under the restoring force of the torsion spring, the gear can drive the gear block to rotate synchronously in the direction of the bracket standing upright.

[0018] The above-mentioned gear block can be fixed in the housing. However, for the convenience of assembly and to facilitate the meshing rotation with the gear, a further improvement is that a spring is further included. The two ends of the spring act between the gear block and the inner wall of the housing respectively, so that the gear block always has a tendency to rotate along the direction of standing upright on the bracket, ensuring that when the pull rope is tightened, the gear block can be reliably meshed with the gear, so that the gear block can immediately drive the gear to rotate together.

[0019] In order to accommodate the gear block, a circumferentially extending chute is provided on the inner wall of the housing, and the gear block is placed in the chute so that it can slide appropriately when needed.

[0020] For the convenience of processing and assembly, the housing may include a cylinder with its mouth facing the other end of the main shaft and a decorative cover connected to the mouth of the cylinder. The gear block and the gear are both located in the cylinder.

[0021] For the convenience of fixing the pull rope, an installation hole for the pull rope to pass through is provided on the outer wall of the cylinder.

[0022] In the above-mentioned various solutions, for the convenience of processing, the limiting structure may include:

[0023] A limiting part, which is composed of the two side walls of the swinging block and one of the circumferential surfaces located between the two side walls;

[0024] A long groove, which extends circumferentially along the inner wall of the inner cavity for the limiting part to rotate therein. When one side wall of the swinging block abuts against one end of the long groove, the bracket is in an upright state; when the other side wall of the swinging block abuts against the other end of the long groove, the bracket is in a fallen state.

[0025] Preferably, positioning pins are provided at both ends of the long groove to abut against the corresponding side walls of the swinging block to extend the service life.

[0026] Compared with the prior art, since a gear and a gear block capable of meshing with the gear are added to the main shaft in the present utility model, when the bow body is in a natural state, the bow limb can tighten the drawstring, pull the gear block to rotate together through the housing, and then drive the gear to rotate together through the gear block, so that the bracket coaxially installed with the gear tilts together and is in a fallen state; when drawing the bow, the drawstring on the bow limb is loosened. At this time, under the action of the restoring force of the torsion spring, the main shaft drives the bracket to rotate and is in an upright state for placing the arrow shaft. At the same time, the main shaft also drives the gear and the gear block to rotate together along the direction in which the bracket stands upright; when releasing the bow and arrow, the bow limb resets, and the drawstring on the bow limb is tightened again, pulls the gear block to rotate through the housing, and the gear block drives the gear to rotate together until the bracket quickly tilts. At this time, since the gear can only rotate unidirectionally relative to the gear block, the gear block will effectively prevent the rotation of the gear, and thus avoid a series of problems that occur when the bracket rebounds after tilting. Therefore, through the unidirectional meshing of the gear and the gear block, the present utility model can effectively prevent the rebound of the bracket after tilting while meeting the use requirements of the arrow rest. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 FIG. 6 is a perspective schematic view of the bracket in the fallen state according to an embodiment of the present utility model;

[0028] Figure 2 FIG. 10 is a perspective schematic view of the bracket in the upright state according to an embodiment of the present utility model;

[0029] Figure 3 is Figure 1 a perspective sectional schematic view of;

[0030] Figure 4 is Figure 1 a partial perspective exploded schematic view of;

[0031] Figure 5 FIG. 26 is a sectional view taken along line A-A in FIG. 1;

[0032] Figure 6 is Figure 5 a schematic structural view when the bowstring is pulled to the upright state of the bracket in the state of;

[0033] Figure 7 is Figure 1 a sectional view taken along line B-B in;

[0034] Figure 8 is Figure 7 a schematic structural view when the bowstring is pulled to the upright state of the bracket in the state of. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0036] As Figures 1 to 8As shown, it is a preferred embodiment of the arrow rest of the present utility model. The arrow rest includes a main body 1, a main shaft 2, a bracket 3, a swing block 4, a torsion spring 5, a pull rope 6 and a limit structure 7. The main body 1 is fixed on the bow body through a base, and the base is composed of a first base (not shown in the figure) and a second base 8. The first base is fixed on the bow body (not shown in the figure) through a main bolt. The second base 8 is assembled by a left base 81 and a right base 82 through a first bolt a1. The right base 82 is fixed on the main body 1 through a second bolt a2. A chute 83 is formed on the second base 8. Through the chute 83, it can slide up and down quickly relative to the first base and be clamped and positioned through the first bolt a1. At the same time, the second base 8 is provided with a vertical third bolt a3, and a nut connected to the main body is connected to the third bolt a3. By rotating the third bolt a3, the main body can be adjusted up and down relative to the second base 8. After moving in place, it is clamped and positioned with the second bolt a2. That is, the main body 1 can be adjusted up and down relative to the bow body through the second base. The horizontal adjustment adopts the structure in Chinese Patent Authorization Publication No. CN210952522U. Since these up and down and horizontal adjustments are all prior arts, the specific detailed structures of movement, clamping and positioning will not be elaborated in detail.

[0037] In this embodiment, an inner cavity 11 and a shaft hole 12 communicating with the inner cavity 11 are opened in the above-mentioned main body 1, as Figure 3 , Figure 4 can be seen. The opening of the inner cavity 11 faces the right end of the main body 1, and the shaft hole 12 axially extends from the left end of the main body and communicates with the inner cavity 11. The opening of the main body is shielded by an end cover 10, and a through hole 101 with the same axis distribution as the shaft hole 12 is opened on the end cover.

[0038] A part (i.e., the right end) of the above-mentioned main shaft 2 is inserted into the shaft hole 12 of the above-mentioned main body 1 and can rotate relative to the main body 1. In this embodiment, the main shaft 2 is connected by a left shaft and a right shaft, and the left shaft is designed as a hollow structure, and a screw a is installed therein to be threadedly connected with a nut b fixed to the bracket. By rotating this screw, the bracket can be horizontally moved relative to the main shaft, and the horizontal adjustment of the bracket relative to the main body is realized according to the structure in Chinese Patent Authorization Publication No. CN210952522U. At the same time, in order to install the following housing 9, the right end of the main shaft 2 axially penetrates the inner cavity 11 and the end cover 10 and is exposed at the right end of the main body 1.

[0039] The above-mentioned bracket 3 is fixed on the left end of the main shaft 2 exposed outside the above-mentioned main body. A groove 31 for placing the arrow rod is provided in the middle of the bracket 3, and the bracket 3 can rotate relative to the main body 1 together with the main shaft 2.

[0040] The above-mentioned swing block 4 is located in the inner cavity 11 of the main body 1. The swing block 4 can be integrally formed with the main shaft 2, or the swing block 4 and the main shaft 2 can be made into a split structure in this embodiment and assembled into one body through conventional structures such as key grooves. In this way, the rotation of the main shaft 2 can drive the swing block 4 to rotate together. In the figure, the swing block 4 has opposite side walls 41, a first circumferential surface 42 and a second circumferential surface 43 located between the two side walls. The first circumferential surface 42 is designed as a semi-circular arc surface, and the second circumferential surface 43 is designed as a minor arc surface. A limiting portion described below is formed between the two side walls 41 and the second circumferential surface 43.

[0041] One end of the above-mentioned torsion spring 5 is fixed on the main body 1, and the other end is fixed on the swing block 4. During assembly, first let the torsion spring 5 rotate 90° clockwise (as shown by the arrow in Figure 5 ) and then embed it into the main body 1. This torsional force causes the main shaft 2 to rotate, so that the bracket 3 always has a tendency to stand upright. That is, in the state of pulling the bowstring, the bracket 3 is in the upright state as shown in Figure 2 .

[0042] In this embodiment, the other end of the main shaft 2 passes through the above-mentioned end cap 10 and is fixed with a gear 20. A housing 9 is sleeved outside the gear, that is, the gear 20 is accommodated in the housing 9. At the same time, a gear block 30 that is unidirectionally engaged with the gear 20 is also accommodated in the housing 9, so that only the gear 20 can rotate unidirectionally relative to the gear block 30 in the direction of the bracket 3 tipping over. And when the pulling rope 6 is in a taut state along with the bow limb, the gear block 30 rotates with the housing 9 and can drive the gear 20 to rotate synchronously in the direction of the bracket 3 tipping over; when the pulling rope 6 is in a relaxed state along with the bow limb, under the restoring force of the torsion spring 5, the gear 20 can drive the gear block 30 to rotate synchronously in the direction of the bracket 3 standing upright.

[0043] Specifically, the structure of the shell 9 can have various forms. In the present embodiment, for the convenience of assembly, the shell 9 includes a cylinder 91 with its mouth facing the other end of the main shaft 2 and a decorative cover 92 connected to the mouth of the cylinder. At this time, the gear block 30 and the gear 20 are both located in the cylinder 91. In order to facilitate the assembly of the gear block 30 and to ensure the smooth meshing and rotation with the gear 20, a slide groove 911 extending in the circumferential direction is provided on the inner wall of the cylinder 91. The gear block 30 is placed in the slide groove 911 and abuts against one end of a spring 40. The other end of the spring 40 abuts against a plug (not shown in the figure) in a through hole fixed to the wall of the cylinder, so that the gear block 30 always has a tendency to slide along the inner wall of the slide groove 911 in the direction of the bracket 3 standing upright. A first screw hole 921 is formed on the end face of the decorative cover 92, and a second screw hole 922 is formed on the circumferential surface of the decorative cover. Set screws 50 are respectively provided in the first and second screw holes. The inner ends of the two set screws 50 can respectively abut against the end face and circumferential surface of the cylinder 91, so as to achieve the fastening of the decorative cover 92 and the cylinder 91 (of course, the decorative cover can also be threadedly connected to the mouth of the cylinder).

[0044] At the same time, a mounting hole 912 for the drawstring to pass through is opened on the outer wall of the cylinder 91. One end of the drawstring 6 is used to connect with the bow piece, and the other end of the drawstring 6 is positioned in the mounting hole 912. Applying force (manually or by tightening the drawstring in the natural state of the bow piece) to the drawstring 6 can drive the housing 9 and the gear block 30 to rotate, and then the gear 20, the main shaft 2 and the bracket 3 rotate together to make the bracket 3 in a falling state.

[0045] The limiting structure 7 is matched between the swing block 4 and the inner cavity of the main body to limit the bracket 3 in an upright state and a tilted state. The limiting structure 7 can adopt various structures in the prior art. In this embodiment, the limiting structure 7 includes a limiting portion and a long groove, wherein the limiting portion adopts the above-mentioned structure, that is, it is composed of two side walls 41 of the swing block 4 and a second peripheral surface 43 located between the two side walls; the long groove 13 extends along the inner wall of the inner cavity 11 of the main body 1 circumferentially for the limiting portion to rotate therein. When one side wall of the swing block 4 abuts against one end of the long groove 13, the bracket 3 is in an upright state. See Figure 6 ; When the other side wall of the swing block abuts against the other end of the long slot, the bracket is in a fallen state, see Figure 5 .

[0046] When in use, when the bow body is in a natural state, the bow piece can tighten the drawstring, and pull the gear block 30 to rotate clockwise through the housing 9. Under the elastic force of the spring 40, the gear block 30 reliably meshes with the gear 20 and drives the gear 20 to rotate clockwise to overcome the torsion of the torsion spring 5, so that the bracket 3 coaxially installed with the gear 20 rotates clockwise together until the other side wall of the swing block 4 abuts against the other end of the long slot 13 (such as Figure 5), at this time, the bracket 3 is in the fallen state, please refer to Figure 7 ; When drawing the bow (string), the pulling rope on the bow piece is slack. At this time, under the action of the restoring force of the torsion spring 5, the main shaft 2 will drive the bracket 3 to rotate counterclockwise until one side wall of the swing block 4 abuts against one end of the long groove 13, please refer to Figure 6 , at this time, the bracket 3 is in the upright state. At the same time, the main shaft 2 also drives the gear 20 to rotate counterclockwise, and then the gear 20 pushes the gear block 30 and the housing 9 to rotate counterclockwise together, that is, rotate along the direction in which the bracket 3 stands upright to Figure 8 as shown; When releasing the bow and arrow, the bow piece resets, and the pulling rope on the bow piece is tightened quickly again. Then, the pulling rope drives the gear block 30 to rotate through the housing 9, and the gear block 30 drives the gear 20 to rotate clockwise together to Figure 7 as shown. Until the other side wall of the swing block 4 abuts against the other end of the long groove (as Figure 5 ), during this process, the bracket 3 falls quickly. Since the gear 20 can only rotate unidirectionally relative to the gear block 30, after the bracket 3 falls, because the gear block 30 prevents the gear 20 from rotating counterclockwise, such a structure can effectively prevent the rotation of the gear 20, and thus avoid a series of problems that occur when the bracket 3 rebounds after falling.

[0047] Considering that the impact on the corresponding end of the long groove is relatively large when returning to the original natural state or the upright state, further, positioning pins 60 that abut against the corresponding side walls of the swing block are provided at both ends of the long groove. These positioning pins are preferably made of rubber rods. Of course, other materials can also be used to achieve this.

[0048] Similar to the prior art, a stop rod 70 is also fixed on the above-mentioned main body. The stop rod 70 is generally in an inverted L shape, and its horizontal part is located above the groove 31 of the bracket 3. In addition to playing a safety role, it also has a shock-absorbing effect.

Claims

1. A limb-driven arrow rest, comprising: A main body (1) having an inner cavity (11) and an axial hole (12) communicating with the inner cavity; A main shaft (2), part of which is inserted into the shaft hole (12) of the main body and can rotate relative to the main body (1); A bracket (3) is fixed on one end of the main shaft (2) exposed from the main body, and a groove (31) is provided in the middle of the bracket for the arrow shaft to rest on; A swing block (4) is located in the inner cavity of the main body and is fixed on the main shaft so as to rotate together with the main shaft; A limiting structure (7) is matched between the swing block (4) and the inner cavity of the main body to limit the bracket to be in a fallen state and an upright state; a torsion spring (5), one end of which is fixed to the main body and the other end of which acts on the main shaft to rotate the main shaft (2) so that the bracket always has a tendency to be in an upright state; A drawstring (6), one end of which is used to connect to the bow limb; It is characterized by also including: A housing (9) is sleeved on the other end of the main shaft (2) exposed from the main body, and the other end of the pull rope (6) is positioned on the housing (9); A gear (20) is contained in the housing and fixed on the main shaft (2); The gear block (30) is located inside the housing and is unidirectionally meshed with the gear (20) so as to allow the gear (20) to rotate unidirectionally relative to the gear block (30) in the tilting direction of the bracket (3); when the drawstring is in a taut state with the bow piece, the gear block (30) rotates with the housing (9) and can drive the gear (20) to rotate synchronously in the tilting direction of the bracket; when the drawstring is in a slack state with the bow piece, under the action of the restoring force of the torsion spring, the gear (20) can drive the gear block (30) to rotate synchronously in the uprighting direction of the bracket.

2. The arrow rest according to claim 1, characterized in that: It also includes a spring (40), the two ends of which act respectively between the gear block (30) and the inner wall of the housing (9), so that the gear block (30) always has a tendency to rotate along the direction in which the bracket stands upright.

3. The arrow rest according to claim 1, characterized in that: A sliding groove (911) extending in the circumferential direction is provided on the inner wall of the housing (9), and the gear block (30) is placed in the sliding groove.

4. The arrow rest according to claim 1, characterized in that: The housing (9) comprises a cylinder (91) with an opening facing the other end of the main shaft and a decorative cover (92) connected to the opening of the cylinder (91), and the gear block (30) and the gear (20) are both located in the cylinder.

5. The arrow rest according to claim 4, characterized in that: The outer wall of the cylinder (91) is provided with a mounting hole (912) for the pull rope to pass through.

6. The arrow rest according to any one of claims 1 to 5, characterized in that: The limiting structure (7) comprises: The limiting part is composed of two side walls (41) of the swing block (4) and one of the peripheral surfaces located between the two side walls; The long groove (13) extends circumferentially along the inner wall of the inner cavity (11) so as to allow the limiting portion to rotate therein. When one side wall of the swing block (4) abuts against one end of the long groove (13), the bracket (3) is in an upright state; when the other side wall of the swing block (4) abuts against the other end of the long groove, the bracket (3) is in a fallen state.

7. The arrow rest according to claim 6, characterized in that: Both ends of the long slot (13) are provided with positioning pins (60) which abut against corresponding side walls of the swing block.

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