Labor-saving adjusting structure special for double-string wheel bow

Abstract

A labor-saving adjusting structure special for a double-string wheel bow comprises a first adjusting auxiliary string assembly (1) and a second adjusting auxiliary string assembly (2), and the first adjusting auxiliary string assembly (1) is installed on a wheel set body (3) in a replaceable or adjustable mode; the second adjusting auxiliary chord assembly (2) is installed on the wheel set body (3) in a replaceable or fixed mode. According to the structure, the installation mode of a traditional auxiliary chord assembly is changed, a modularization or semi-fixed semi-module mode is adopted, different second adjusting auxiliary chord assemblies are different in chord groove curve outline, the second adjusting auxiliary chord assemblies are replaced by disassembling screws, and therefore the tension curve is changed, and the adjustment accuracy is improved. The problem that the labor-saving mode of a double-string bow or a crossbow and other devices using the wheel set structure cannot be adjusted is solved. And multiple labor-saving modes of one bow can be selected.

Description

Technical Field

[0001] This utility model relates to the field of sports equipment technology, and in particular to a force-saving adjustment structure for a double-string bow. Background Technology

[0002] The secondary strings available on the market are fixed structures, with the secondary string mounting slot and wheel assembly being integrated and non-removable. The spacing and curve shape of the secondary string around the wheel axle cannot be adjusted.

[0003] The secondary string determines the projectile's initial velocity and draw-saving mode. Initial velocity refers to the initial speed at which the projectile leaves the bowstring upon firing; a higher initial velocity results in a longer range. Draw-saving mode refers to the feeling of force required when drawing the bow, commonly known as the draw feel. Therefore, a fixed secondary string slot cannot change the projectile's initial velocity or draw-saving mode. Utility Model Content

[0004] In order to solve the problems existing in the prior art, this utility model provides a force-saving adjustment structure for double-string bows.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A force-saving adjustment structure for double-string wheel bows, wherein the first adjustment sub-string assembly 1 is replaceable or adjustable and is mounted on the wheel set body 3; the second adjustment sub-string assembly 2 is replaceable or fixed and is mounted on the wheel set body 3.

[0007] This utility model also has the following additional technical features:

[0008] As a further specific optimization of the technical solution of this utility model: at least two sets of positioning holes are provided on the first adjusting sub-chord assembly 1 and the second adjusting sub-chord assembly 2, and the first adjusting sub-chord assembly 1 and the second adjusting sub-chord assembly 2 are installed on the wheel set body 3 by fasteners.

[0009] As a further specific optimization of the technical solution of this utility model: both the first adjusting secondary string assembly 1 and the second adjusting secondary string assembly 2 are provided with string grooves.

[0010] As a further specific optimization of the technical solution of this utility model: the first adjusting sub-string assembly 1 and the second adjusting sub-string assembly 2 are designed with several different shapes of sub-string assemblies, and the groove curve profiles of the sub-string assemblies with different shapes are different.

[0011] As a further specific optimization of the technical solution of this utility model: the two sets of positioning holes of the first adjusting subchord assembly 1 are adjusting holes.

[0012] As a further specific optimization of the technical solution of this utility model: a limiting groove 103 is provided on the inner side of the first adjusting secondary string assembly 1, and the limiting groove 103 is used to place limiting blocks 104 of different shapes.

[0013] As a further specific optimization of the technical solution of this utility model: a rotary positioning hole 105 is provided at the tail of the first adjusting secondary string assembly 1.

[0014] Compared with the prior art, the advantages of this utility model are:

[0015] The structure of this utility model changes the traditional installation method of the secondary string assembly. It adopts a modular or semi-fixed semi-modular approach. Different secondary string assemblies 2 have different string groove curve profiles. The secondary string assembly 2 can be replaced by disassembling with screws, thereby changing the tension curve. This solves the problem that the labor-saving mode is not adjustable in double-string bows or crossbows and other equipment using this type of wheel structure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the first adjusting sub-chord assembly 1 of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the second adjusting sub-chord assembly 2 of this utility model;

[0018] Figure 3 This is a front view structural diagram of the present utility model;

[0019] Figure 4 This is a schematic diagram of the rear view structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the wheel assembly body 3 of this utility model;

[0021] Figure 6 This is a schematic diagram of the labor-saving adjustment structure of this utility model installed on the wheel assembly body 3;

[0022] Figures 7-8 A schematic diagram of the structure of Embodiment 2 of this utility model;

[0023] Figures 9-10 A schematic diagram of the structure of Embodiment 3 of this utility model.

[0024] Explanation of reference numerals in the attached drawings: First adjusting sub-chord assembly 1, Second adjusting sub-chord assembly 2, Wheel set body 3. Detailed Implementation

[0025] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings.

[0026] Example 1

[0027] A force-saving adjustment structure for double-string wheel bows includes a first adjustment sub-string assembly 1 and a second adjustment sub-string assembly 2, wherein: the first adjustment sub-string assembly 1 is replaceably mounted on the wheel set body 3, and the second adjustment sub-string assembly 2 is also replaceably mounted on the wheel set body 3.

[0028] At least two sets of positioning holes are provided on the first adjusting sub-chord assembly 1 and the second adjusting sub-chord assembly 2, and the first adjusting sub-chord assembly 1 and the second adjusting sub-chord assembly 2 are installed on the wheel set body 3 by fasteners.

[0029] In the optimized configuration, the positioning hole of the first adjusting secondary string assembly 1 is the first positioning hole 101, and the positioning hole of the second adjusting secondary string assembly 2 is the second positioning hole 201. Fasteners are installed in both the first positioning hole 101 and the second positioning hole 201.

[0030] Both the first adjusting secondary string assembly 1 and the second adjusting secondary string assembly 2 are provided with string grooves, and the secondary string is located in the string groove.

[0031] In the optimized configuration, the string groove of the first adjusting secondary string assembly 1 is the first string groove 102, and the string groove of the second adjusting secondary string assembly 2 is the second string groove 202. The first string groove 102 and the second string groove 202 are connected and installed together, and the secondary string is located in the first string groove 102 and the second string groove 202.

[0032] The first adjusting sub-string assembly 1 and the second adjusting sub-string assembly 2 are designed with several different shapes of sub-string assemblies. The string groove curve profiles of different shaped sub-string assemblies are different. The first adjusting sub-string assembly 1 and the second adjusting sub-string assembly 2 can be replaced by disassembling and installing fasteners, thereby changing the tension curve and solving the problem that the force-saving mode of double-string bows or crossbows and other equipment using this type of wheel structure is not adjustable.

[0033] Example 2

[0034] The first adjusting sub-chord assembly 1 is adjustablely mounted on the wheelset body 3, and the second adjusting sub-chord assembly 2 is fixedly mounted on the wheelset body 3. Based on Embodiment 1, the first positioning hole 101 of the first adjusting sub-chord assembly 1 is optimized as an adjusting hole. This design eliminates the need to replace sub-chord assemblies of different shapes; the tension curve of the sub-chord can be changed directly by adjusting the position of the first adjusting sub-chord assembly 1. To ensure the stability of the first adjusting sub-chord assembly 1, a limiting groove 103 is provided on its inner side. In conjunction with the use of limiting blocks 104, limiting blocks 104 of different shapes can be placed in the limiting groove 103 according to actual needs, making the sub-chord assembly 1 more stable during use.

[0035] Example 3

[0036] The first adjusting sub-chord assembly 1 is adjustablely mounted on the wheelset body 3, and the second adjusting sub-chord assembly 2 is fixedly mounted on the wheelset body 3. Based on embodiment 2, the design of the limiting groove 103 and the limiting block 104 is removed, and a rotating positioning hole 105 is added to the tail of the first adjusting sub-chord assembly 1, which allows the first adjusting sub-chord assembly 1 to be adjusted in position more quickly.

[0037] The above detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

Claims

1. A force-saving adjustment structure specifically for double-string bows, characterized in that: It includes a first adjusting chord assembly (1) and a second adjusting chord assembly (2), wherein: the first adjusting chord assembly (1) is replaceable or adjustable and mounted on the wheelset body (3); the second adjusting chord assembly (2) is replaceable or fixed and mounted on the wheelset body (3).

2. The force-saving adjustment structure for a double-string bow as described in claim 1, characterized in that: The first adjusting sub-chord assembly (1) and the second adjusting sub-chord assembly (2) are provided with at least two sets of positioning holes, and the first adjusting sub-chord assembly (1) and the second adjusting sub-chord assembly (2) are installed on the wheel set body (3) by fasteners.

3. The force-saving adjustment structure for a double-string bow as described in claim 2, characterized in that: Both the first adjusting sub-string assembly (1) and the second adjusting sub-string assembly (2) are provided with string grooves.

4. The force-saving adjustment structure for a double-string bow as described in claim 3, characterized in that: The first adjusting sub-chord assembly (1) and the second adjusting sub-chord assembly (2) are designed with several different shapes of sub-chord assemblies, and the groove curve profiles of the sub-chord assemblies of different shapes are different.

5. The force-saving adjustment structure for a double-string bow as described in claim 2, characterized in that: The two sets of positioning holes of the first adjusting subchord assembly (1) are adjusting holes.

6. The force-saving adjustment structure for a double-string bow as described in claim 2, characterized in that: The inner side of the first adjusting sub-chord assembly (1) is provided with a limiting groove (103), and limiting blocks (104) of different shapes are placed in the limiting groove (103).

7. The force-saving adjustment structure for a double-string bow as described in claim 5, characterized in that: The tail of the first adjusting sub-chord assembly (1) is provided with a rotating positioning hole (105).

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