Composite bow main chord length adjustable wheel set

Abstract

The utility model relates to a wheel set capable of adjusting the length of a main chord of a composite bow, which belongs to the technical field of adjustment of the main chord of the composite bow and comprises a wheel set, two groups of parallel bowstring grooves used for winding of the main chord are arranged on the wheel set, an adjusting frame fixedly connected is arranged on the wheel set, and fixing columns fixedly connected are symmetrically arranged on the center of the adjusting frame. The fixing column is close to the starting end of the bowstring groove, a main string adjusting module used for adjusting the tension degree of the main string is arranged on the fixing column, a plurality of adjusting holes used for fixing the main string adjusting module are evenly formed in the outer edge of the adjusting frame, and the two ends of the main string are connected with the main string adjusting modules on the two wheel sets arranged on the same side in a mirror image mode respectively. The rotation angle of the main chord adjusting module on the fixing column on the adjusting frame is adjusted, the tensioning degree of the two ends of the main chord is fixedly adjusted through the adjusting holes, the deviation problem of four included angles of the bead base fixed to the main chord is adjusted, it is guaranteed that the distances between the four included angles of the bead base and the main chord adjusting module are the same, and therefore accurate shooting is guaranteed.

Description

Technical Field

[0001] This utility model relates to an adjustable wheel assembly for the main string length of a compound bow, belonging to the field of compound bow main string adjustment technology. Background Technology

[0002] The compound bow wheel assembly is the core component of a modern compound bow, responsible for energy transfer, adjusting the draw ratio, and ensuring the stability of the shot or arrow launch. Existing compound bow wheel assemblies use main string hangers and secondary string hangers to fix both free ends of the main string to a single wheel assembly. Each wheel assembly connects to both ends of a main string, and a balance seat connects the main strings on the two wheel assemblies. The ball bearing is hidden on one side of the main string. However, due to the different draw lengths of the two main strings, the ball bearing can shift or twist, leading to inaccurate shooting. Therefore, developing a compound bow wheel assembly with an adjustable main string length is crucial. Utility Model Content

[0003] This invention addresses the shortcomings of the prior art by providing a composite bow main string length adjustable wheel assembly.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0005] A compound bow main string length adjustable wheel set includes a wheel set with two sets of parallel bowstring grooves for winding the main string. The wheel set has a fixedly connected adjustment frame, and the adjustment frame has fixedly connected fixing posts symmetrically arranged at its center. The fixing posts are close to the starting end of the bowstring grooves. The fixing posts have main string adjustment modules for adjusting the tension of the main string. The outer edge of the adjustment frame has a plurality of adjustment holes evenly arranged for fixing the main string adjustment modules. The two ends of the main string are respectively connected to the main string adjustment modules on two mirror-arranged wheel sets on the same side.

[0006] Furthermore, the fixing column includes a root fixing ring fixedly connected to the adjusting frame, an end fixing ring is provided on the root fixing ring, and a groove that matches the bowstring groove is provided between the root fixing ring and the end fixing ring.

[0007] Furthermore, the main string adjustment module includes a sliding plate installed above the adjustment frame. The sliding plate is provided with a crescent plate. The inner side of the crescent plate is a groove that is slidably connected to the root fixing ring and the end fixing ring. The outer side is provided with a string hanging groove corresponding to the groove. One end of the sliding plate is provided with a connecting hole for fitting onto the root fixing ring, and the other end is provided with a bolt hole for fixing to the adjustment hole by bolts.

[0008] Furthermore, after one end of the main string is fitted onto the groove and the string hanging groove, it extends along the bow string groove of one of the wheel sets to the bow string groove of the other wheel set that is mirrored on the same side, and then the other end of the main string is fitted onto the groove and the string hanging groove.

[0009] Furthermore, the bowstring groove, the recess, and the string hanging groove are all on the same plane.

[0010] Furthermore, the sliding plate and the crescent plate are either detachable or integrally formed structures.

[0011] Furthermore, the main string adjustment module is equipped with an adjustment wrench that can be plugged in.

[0012] Furthermore, the crescent plate is provided with a socket B, the center of the fixing post is provided with a hollow through-hole type socket A, and the adjusting wrench is provided with a socket A that is plugged into socket B and a socket B that is plugged into socket A.

[0013] Furthermore, the wheel assembly, adjustment frame, and fixing column are all integrally molded structures.

[0014] Furthermore, the two main strings are provided with detachable bead seats at their middle ends.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This application adjusts the rotation angle of the main string adjustment module on the fixed column of the adjustment frame, and fixes the tension at both ends of the main string through the adjustment hole. This is used to adjust the offset of the four included angles of the bead seat fixed on the main string, ensuring that the distance from the four included angles of the bead seat to the main string adjustment module is the same, thereby ensuring accurate shooting.

[0017] 2. This application eliminates the need for the connection method using a balance seat in the prior art by connecting the main string adjustment modules on two mirror-shaped wheel sets on the same side at both ends of the main string; by extending directly from the string slot to the bow string slot, the length of the main string is effectively shortened, saving costs.

[0018] 3. This application allows for manual adjustment of the tension of one free end of the main string by rotating the main string adjustment module, or easy rotation by using an adjustment wrench instead of manual rotation. It can also be quickly disassembled after the main string is adjusted without affecting the normal use of the compound bow. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 for Figure 1 Enlarged view of section A.

[0021] Figure 3 This is a schematic diagram of the structure of this utility model without the main string adjustment module installed.

[0022] Figure 4 for Figure 3 Enlarged view of section B in the middle.

[0023] Figure 5 This is a schematic diagram of the main string adjustment module of this utility model.

[0024] Figure 6 This is a schematic diagram of the structure of the present invention for installing the adjusting wrench.

[0025] Figure 7 This is a schematic diagram of the structure of the adjusting wrench and the main string adjusting module of this utility model.

[0026] Figure 8 This is a schematic diagram of the main string adjustment module of this utility model symmetrically installed on both sides of the wheel assembly.

[0027] Figure 9 for Figure 8 Enlarged view of section C.

[0028] Figure 10 This is a schematic diagram of the connection structure between the two fixed ends of the bowstring of this utility model and the main string adjustment module of the two wheel sets.

[0029] Figure 11 for Figure 9 Enlarged view of section D in the middle.

[0030] In the diagram: 1. Wheel assembly; 2. Fixed post; 3. Adjustment frame; 4. Main string adjustment module; 5. Adjustment wrench; 6. Ball seat; 7. Main string; 11. Bowstring groove; 21. Root fixing ring; 22. End fixing ring; 23. Insertion hole A; 24. Groove; 31. Adjustment hole; 41. Sliding plate; 42. Connecting hole; 43. Bolt hole; 44. Crescent plate; 45. Insertion hole B; 46. Slide groove; 47. String hanging groove; 51. Insertion post A; 52. Insertion post B. Detailed Implementation

[0031] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0032] like Figures 1-5As shown, a compound bow main string length adjustable wheel assembly includes a wheel assembly 1. The wheel assembly 1 has two sets of parallel bowstring grooves 11 for winding the main string 7. The wheel assembly 1 has a fixedly connected adjustment frame 3. The adjustment frame 3 has fixedly connected fixing posts 2 symmetrically arranged at its center, near the starting end of the bowstring grooves 11. The fixing posts 2 have main string adjustment modules 4 for adjusting the tension of the main string 7. The outer edge of the adjustment frame 3 has several evenly distributed adjustment holes 31 for fixing the main string adjustment modules 4. The two ends of the main string 7 are respectively connected to the main string adjustment modules 4 on two mirror-image wheel assemblies on the same side. This application adjusts the rotation angle of the main string adjustment modules 4 on the fixing posts 2 of the adjustment frame 3, and fixes the tension of the two ends of the main string 7 through the adjustment holes 31. This is used to adjust the offset of the four included angles of the bead holders 6 fixed on the main string 7, ensuring that the distance from the four included angles of the bead holders 6 to the main string adjustment modules 4 is the same, thereby ensuring accurate shooting. The two ends of the main string 7 are respectively connected to the main string adjustment modules 4 on the two mirror-set wheel sets 1 on the same side, eliminating the need for the connection method through the balance seat in the existing technology.

[0033] like Figure 8-9 As shown, the fixing column 2 includes a root fixing ring 21 fixedly connected to the adjusting frame 3, and an end fixing ring 22 is provided on the root fixing ring 21. A groove 24 that mates with the bowstring groove 11 is provided between the root fixing ring 21 and the end fixing ring 22. The root fixing ring 21 and the end fixing ring 22 in this application are not limited to... Figure 3-4 As shown, the root fixing ring 21 and the end fixing ring 22 are all sliding structures used for sliding connection with the main chord adjustment module 4.

[0034] The main string adjustment module 4 includes a sliding plate 41 mounted above the adjustment frame 3. The sliding plate 41 has a crescent-shaped plate 44. The inner surface of the crescent-shaped plate 44 has a groove 46 for sliding connection with the root fixing ring 21 and the end fixing ring 22, and the outer surface has a string-hanging groove 47 corresponding to the groove 24. One end of the sliding plate 41 has a connecting hole 42 for fitting onto the root fixing ring 21, and the other end has a bolt hole 43 for fixing to the adjustment hole 31 by bolts. The groove 46 in this application is used for rotatable connection with the root fixing ring 21 and the end fixing ring 22. Figure 5 The hanging groove 47 shown is a semi-circular arc groove, which can also be adjusted to a cam shape or other arc groove shapes according to actual needs.

[0035] like Figure 10-11As shown, after one end of the main string 7 is fitted onto the groove 24 and the string mounting groove 47, it extends along the bow string groove 11 of one of the wheel sets 1 to the bow string groove 11 of the other wheel set 1, which is mirrored on the same side. Then, the other end of the main string 7 is fitted onto the groove 24 and the string mounting groove 47. The free end of the main string 7 is fixed by the string mounting groove 47. Compared with the prior art, the length of the main string 7 is improved from being wound inside the wheel set 1 and then wound to the bow string groove 11 to extending directly from the string mounting groove 47 to the bow string groove 11, which effectively shortens the length of the main string 7 and saves costs. The two ends of the main string 7 are respectively connected to the string mounting grooves 47 on the two wheel sets 1 on the same side, eliminating the connection method through the balance seat in the prior art.

[0036] The bowstring groove 11, the groove 24, and the string hanging groove 47 are all on the same plane.

[0037] The sliding plate 41 and the crescent plate 44 are either detachable or integrally formed.

[0038] like Figure 6-7 As shown, the main string adjustment module 4 is equipped with an adjustable wrench 5 that can be plugged in. In this application, the tension of one free end of the main string 7 can be adjusted by manually rotating the main string adjustment module 4, or the adjustable wrench 5 can be used instead of manual rotation. The adjustable wrench 5 is used to allow the main string adjustment module 4 to rotate easily on the fixed post 2, and can be quickly disassembled after the main string 7 is adjusted, without affecting the normal use of the compound bow.

[0039] The crescent plate 44 is provided with a socket B 45, and the center of the fixed post 2 is provided with a hollow through-hole socket A 23. The adjusting wrench 5 is provided with a plug A 51 that is plugged into the socket B 45 and a plug B 52 that is plugged into the socket A 23. The quick-connect structure of plug A 51 with socket B 45 and plug B 52 with socket A 23 enables the adjusting wrench 5 to quickly engage with the main string adjusting module 4. At the same time, with plug B 52 as the fixed point, plug A 51 drives the sliding plate 41 and the crescent plate 44 to rotate rapidly around the fixed post 2.

[0040] The wheel assembly 1, the adjustment frame 3, and the fixing column 2 are all integrally formed structures.

[0041] The two main strings 7 are provided with detachable bead seats 6 at their middle ends.

[0042] This application adjusts the rotation angle of the main string adjustment module 4 on the fixed column 2 on the adjustment frame 3, and fixes the tension of both ends of the main string 7 through the adjustment hole 31. This is used to adjust the offset of the four included angles of the bead seat 6 fixed on the main string 7, and ensure that the distance between the four included angles of the bead seat 6 and the main string adjustment module 4 is the same, thereby ensuring accurate shooting.

[0043] This application eliminates the need for the connection method via a balance seat in the prior art by connecting the main string 7 to the main string adjustment modules 4 on two mirror-mounted wheel sets 1 on the same side at both ends; and by extending directly from the string hanging groove 47 into the bow string groove 11, the length of the main string 7 is effectively shortened, saving costs.

[0044] This application allows for manual adjustment of the tension of one free end of the main string 7 by rotating the main string adjustment module 4, or by using the adjustment wrench 5 to easily rotate it instead of manually. After adjusting the main string 7, it can be quickly disassembled without affecting the normal use of the compound bow.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A composite bow main string length adjustable wheel assembly, comprising a wheel assembly (1), wherein the wheel assembly (1) is provided with two sets of parallel bowstring grooves (11) for winding the main string (7), characterized in that: The wheel set (1) is provided with a fixedly connected adjustment frame (3). The adjustment frame (3) is symmetrically provided with a fixedly connected fixed column (2). The fixed column (2) is close to the starting end of the bowstring groove (11). The fixed column (2) is provided with a main string adjustment module (4) for adjusting the tension of the main string (7). The outer edge of the adjustment frame (3) is provided with a number of adjustment holes (31) for fixing the main string adjustment module (4). The two ends of the main string (7) are respectively connected to the main string adjustment modules (4) on two mirror-image wheel sets (1) on the same side.

2. The adjustable main string length wheel assembly of the composite bow according to claim 1, characterized in that: The fixed column (2) includes a root fixing ring (21) fixedly connected to the adjusting frame (3), and an end fixing ring (22) is provided on the root fixing ring (21). A groove (24) that matches the bowstring groove (11) is provided between the root fixing ring (21) and the end fixing ring (22).

3. The adjustable main string length wheel assembly of the composite bow according to claim 2, characterized in that: The main string adjustment module (4) includes a sliding plate (41) installed above the adjustment frame (3). The sliding plate (41) is provided with a crescent plate (44). The inner side of the crescent plate (44) is a sliding groove (46) that is slidably connected to the root fixing ring (21) and the end fixing ring (22). The outer side is provided with a string hanging groove (47) corresponding to the groove (24). One end of the sliding plate (41) is provided with a connecting hole (42) for fitting into the root fixing ring (21), and the other end is provided with a bolt hole (43) that is fixed to the adjustment hole (31) by bolts.

4. The adjustable main string length wheel assembly of the composite bow according to claim 3, characterized in that: After one end of the main string (7) is fitted onto the groove (24) and the string hanging groove (47), it extends along the bow string groove (11) of one of the wheel sets (1) to the bow string groove (11) of the other wheel set (1) set on the same side in a mirror image, and then the other end of the main string (7) is fitted onto the groove (24) and the string hanging groove (47).

5. The adjustable main string length wheel assembly of the composite bow according to claim 3, characterized in that: The bowstring groove (11), the groove (24), and the string hanging groove (47) are all on the same plane.

6. The compound bow main string length adjustable pulley system according to claim 3, characterized in that: The sliding plate (41) and the crescent plate (44) are either detachable or integrally formed.

7. The compound bow main string length adjustable pulley system according to any one of claims 3-6, characterized in that: The main string adjustment module (4) is equipped with an adjustment wrench (5) that can be plugged in.

8. The compound bow main string length adjustable pulley system according to claim 7, characterized in that: The crescent plate (44) is provided with a socket B (45), the center of the fixing post (2) is provided with a hollow through-hole socket A (23), and the adjusting wrench (5) is provided with a plug A (51) that is plugged into the socket B (45) and a plug B (52) that is plugged into the socket A (23).

9. The compound bow main string length adjustable pulley system according to any one of claims 1-6, characterized in that: The wheel assembly (1), the adjustment frame (3), and the fixing column (2) are all integrally formed structures.

10. The compound bow main string length adjustable pulley system according to any one of claims 1-6, characterized in that: The two main strings (7) are provided with detachable bead seats (6) at their middle ends.

Images