Compound bow wheel set

By setting the key point position in the composite bow wheel set, the problem of fixing the tension curve in the existing composite bow wheel set is solved, and the tensile force maintains the calibrated pound number during the tensioning process of the composite bow is achieved, which improves the kinetic energy of the composite bow.

CN119779089APending Publication Date: 2025-04-08TAIYUAN LENGBING SPORTS EQUIP CO LTD
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Patent Information

Application Number
CN202510080152.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-19
Publication Date
2025-04-08

AI Technical Summary

Technical Problem

During the process of stretching to position, the tension curve of the existing composite bow has a fixed tension curve, making it difficult to achieve a sudden change in a single shooting cycle, resulting in insufficient energy storage and making it difficult to improve the effectiveness of the composite bow.

Method used

A composite bow wheel set is designed. By setting the position of the key point position, the tension force gradually increases to the calibrated pound number during the tensioning process, and then maintains until it reaches the position, and finally quickly drops to the labor-saving pound number.

Benefits of technology

It is realized that during the tensioning process of the composite bow, the tension is maintained at the calibrated pound until the end reaches the position, and the energy is accumulated, thereby increasing the kinetic energy of the composite bow.

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Abstract

The present invention discloses a compound bow wheel group, which relates to the field of bows and arrows, and includes: an axle wheel, an auxiliary wheel and a main wheel, wherein the axle wheel, the auxiliary wheel and the main wheel are respectively provided with an axle wheel groove, an auxiliary wheel groove and a main wheel groove, and the axle center of the axle wheel is taken as the origin, and the ray perpendicular to the main chord backward is set to 0 degrees, which is recorded as a 0° ray, and the 0° ray is rotated 15 degrees counterclockwise with the origin as the center to be a 15° ray, and so on; the 0° ray, the 15° ray, the 120° ray, the 210° ray, and the 240° ray, the intersection of the above rays with the axle wheel groove, the auxiliary wheel groove and the main wheel groove is a specific length from the axle center. The compound bow wheel group provided by the present invention can maintain the calibrated poundage until the end position, and has a large amount of energy storage, thereby further improving the kinetic energy of the compound bow.
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Description

Technical Field

[0001] The present invention relates to the field of bows and arrows, and more particularly to a compound bow wheel set. Background Art

[0002] The compound bow is mainly assembled from components such as the bow handle, eccentric wheel group, main string, secondary string, limb, limb seat, etc. There are generally three-string structures and five-string structures. The principles are the same. Through the backward deformation of the main string, the kinetic energy of the bow is converted into potential energy for pulling the limb through the eccentric wheel group, so that the limb stores energy. When the main string is released, the bow limb is deformed first, and the pulley group is driven to rotate through the secondary string, which then drives the main string to rebound and shoot the arrow placed on the main string.

[0003] The eccentric wheel group of a compound bow can improve the tension curve and achieve a labor-saving effect. A traditional pulley group usually includes a main wheel and one or two secondary wheels. The main wheel and the secondary wheels are fixedly connected, with the same angular velocity and different linear velocities. Since the geometric shapes of the main wheel and the secondary wheels are fixed, the tension curve, labor-saving ratio and efficiency of the eccentric wheel group are also fixed. It is impossible to achieve a sudden change in the tension curve within a single shooting cycle. In order to achieve terminal labor saving, there will inevitably be a process of gradual decrease in tension during the process of pulling to the end position. Such an eccentric wheel group has less energy storage than the eccentric wheel group that maintains the calibrated poundage until the end end position under ideal conditions, and it is difficult to further improve the performance of the compound bow. Summary of the invention

[0004] Technical issues solved

[0005] The present invention provides a compound bow wheel assembly, which solves the problem of failure of the existing handle due to angle deflection.

[0006] Technical Solution

[0007] To achieve the above object, the present invention provides a composite bow wheel assembly, comprising:

[0008] The axle wheel, the secondary wheel and the main wheel are respectively provided with an axle wheel groove, a secondary wheel groove and a main wheel groove. With the axle center of the axle wheel as the origin, the ray perpendicular to the main chord backward is set to 0 degrees, which is recorded as the 0° ray. The 0° ray is rotated 15 degrees counterclockwise with the origin as the center to become the 15° ray, and so on.

[0009] The distance between the intersection of the 0° ray and the shaft wheel groove and the shaft center is 8.6 mm, the distance between the intersection of the 0° ray and the secondary wheel groove and the shaft center is 25.1 mm, and the distance between the intersection of the 0° ray and the main wheel groove and the shaft center is 42.5 mm;

[0010] The distance between the intersection of the 15° ray and the shaft wheel groove and the shaft center is 8.8 mm, and the distance between the intersection of the 15° ray and the main wheel groove and the shaft center is 39.4 mm;

[0011] The distance between the intersection of the 120° ray and the shaft wheel groove and the axis center is 12.8 mm, and the distance between the intersection of the 120° ray and the main wheel groove and the axis center is 78.8 mm;

[0012] The distance between the intersection of the 210° ray and the shaft wheel groove and the axis center is 13.3 mm, and the distance between the intersection of the 210° ray and the main wheel groove and the axis center is 82.7 mm;

[0013] The distance between the intersection of the 240° ray and the shaft wheel groove and the axis center is 16 mm, and the distance between the intersection of the 210° ray and the main wheel groove and the axis center is 77.5 mm.

[0014] The compound bow wheel assembly of the present invention sets the dimensions of key points so that when the compound bow is stretched to the rest position, the pulling force first gradually increases to the calibrated poundage, then maintains the calibrated poundage, and at the moment of resting, it is reduced to the labor-saving poundage. Such a wheel assembly maintains the calibrated poundage until the terminal resting position, stores more energy, and thus further improves the kinetic energy of the compound bow. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a composite bow wheel assembly according to the present invention;

[0016] Figure 2 It is a plan view schematic diagram of a composite bow wheel assembly according to the present invention; DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0018] Example

[0019] like Figure 1 and Figure 2 As shown, a compound bow wheel assembly comprises:

[0020] The axle wheel 10, the secondary wheel 20 and the main wheel 30 are respectively provided with an axle wheel groove 11, a secondary wheel groove 21 and a main wheel groove 31. With the axis of the axle wheel 10 as the origin, the ray perpendicular to the main chord 1 is set to 0 degrees, which is recorded as the 0° ray. The 0° ray is rotated 15 degrees counterclockwise with the origin as the center to become the 15° ray, and so on.

[0021] The distance between the intersection of the 0° ray and the shaft wheel groove and the shaft center is 8.6 mm, the distance between the intersection of the 0° ray and the secondary wheel groove and the shaft center is 25.1 mm, and the distance between the intersection of the 0° ray and the main wheel groove and the shaft center is 42.5 mm;

[0022] The distance between the intersection of the 15° ray and the shaft wheel groove and the shaft center is 8.8 mm, and the distance between the intersection of the 15° ray and the main wheel groove and the shaft center is 39.4 mm;

[0023] The distance between the intersection of the 120° ray and the shaft wheel groove and the axis center is 12.8 mm, and the distance between the intersection of the 120° ray and the main wheel groove and the axis center is 78.8 mm;

[0024] The distance between the intersection of the 210° ray and the shaft wheel groove and the axis center is 13.3 mm, and the distance between the intersection of the 210° ray and the main wheel groove and the axis center is 82.7 mm;

[0025] The distance between the intersection of the 240° ray and the shaft wheel groove and the axis center is 16 mm, and the distance between the intersection of the 210° ray and the main wheel groove and the axis center is 77.5 mm.

[0026] During the tensioning process of the compound bow, the above-mentioned points are key points, which are the transition points of each stage in the tensioning process and determine the degree of force on the main string and the auxiliary string in each stage. The setting of the above-mentioned points ensures that during the tensioning process of the main string, the tension force increases to the calibrated poundage and can maintain the calibrated poundage until it reaches the stabilizing point and then quickly drops to the calibrated poundage with a labor-saving ratio.

[0027] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A composite bow wheel assembly, characterized in that: include: The axle wheel, the secondary wheel and the main wheel are respectively provided with an axle wheel groove, a secondary wheel groove and a main wheel groove. With the axle center of the axle wheel as the origin, the ray perpendicular to the main chord backward is set to 0 degrees, which is recorded as the 0° ray. The 0° ray is rotated 15 degrees counterclockwise with the origin as the center to become the 15° ray, and so on. The distance between the intersection of the 0° ray and the shaft wheel groove and the shaft center is 8.6 mm, the distance between the intersection of the 0° ray and the secondary wheel groove and the shaft center is 25.1 mm, and the distance between the intersection of the 0° ray and the main wheel groove and the shaft center is 42.5 mm; The distance between the intersection of the 15° ray and the shaft wheel groove and the shaft center is 8.8 mm, and the distance between the intersection of the 15° ray and the main wheel groove and the shaft center is 39.4 mm; The distance between the intersection of the 120° ray and the shaft wheel groove and the axis center is 12.8 mm, and the distance between the intersection of the 120° ray and the main wheel groove and the axis center is 78.8 mm; The distance between the intersection of the 210° ray and the shaft wheel groove and the axis center is 13.3 mm, and the distance between the intersection of the 210° ray and the main wheel groove and the axis center is 82.7 mm; The distance between the intersection of the 240° ray and the shaft wheel groove and the axis center is 16 mm, and the distance between the intersection of the 210° ray and the main wheel groove and the axis center is 77.5 mm.