Cross double-main-chord composite bow pulley

Abstract

The utility model relates to the technical field of composite bows, and discloses a crossed double-main-chord composite bow pulley which comprises a bow body, a first upper bow piece, a second upper bow piece, a first lower bow piece and a second lower bow piece are installed at the two ends of the bow body respectively, and a first upper pulley is installed at the end, away from the bow body, of the first upper bow piece. According to the crossed double-main-chord composite bow pulley, the first upper bow piece, the first upper pulley, the first lower bow piece, the first lower pulley and the first main chord are arranged in the same plane, and the second upper bow piece, the second upper pulley, the second lower bow piece, the second lower pulley and the second main chord are arranged in the same plane; the magnetic base is arranged at the intersection of the first main chord and the second main chord, so that the magnetic base is subjected to pulling force of the first main chord and the second main chord in the vertical direction and the horizontal direction, the magnetic base is not prone to swinging and displacement in the vertical direction and the horizontal direction, and the effect of improving the hit rate precision of the composite bow is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of compound bows, in particular to a cross double-main-string compound bow pulley. Background Art

[0002] Currently, the compound bows on the market include archery compound bows and steel ball archery dual-purpose compound bows. The steel ball archery dual-purpose compound bow uses a parallel double main string pulley system, and a magnetic seat for launching steel balls is fixed in the middle of the main string. Since the cost of using steel balls is lower than that of arrows, steel ball archery dual-purpose compound bows have become more and more popular in recent years.

[0003] The existing parallel double main chord pulley system consists of two upper and lower pulleys with double main chord grooves, two parallel main chords, and a magnetic seat fixed between the two main chords. The magnetic seat is fixed in the middle of the two parallel main chords. Since the magnetic seat has strong constraints only along the main chord direction and weak constraints perpendicular to the main chord direction, it is not easy for the magnetic seat to displace and swing in the vertical direction, but it is easy to displace and swing in the horizontal direction, which makes it difficult for the magnetic seat to stably push the steel ball to accelerate. In actual use, the trajectory of the steel ball is always randomly deviated to the left and right, and the hit rate is low and the accuracy is poor. Therefore, a cross double main chord composite bow pulley is proposed. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a cross double main string composite bow pulley, which has the advantages of improving the hit rate and accuracy, and solves the problem of low hit rate and poor accuracy of the cross double main string composite bow pulley.

[0006] (II) Technical solution

[0007] In order to achieve the above purpose of improving the accuracy of the hit rate, the utility model provides the following technical solutions:

[0008] A cross double main string composite bow pulley comprises a bow body, wherein a first upper bow piece, a second upper bow piece, a first lower bow piece, and a second lower bow piece are respectively installed at both ends of the bow body, a first upper pulley is installed on the end of the first upper bow piece away from the bow body, a second upper pulley is installed on the end of the second upper bow piece away from the bow body, a first lower pulley is installed on the end of the first lower bow piece away from the bow body, and a second lower pulley is installed on the end of the first lower bow piece away from the bow body, a first main string is connected between the first upper pulley and the first lower pulley, a second main string is connected between the second upper pulley and the second lower pulley, and a magnetic seat is installed at the intersection of the first main string and the second main string.

[0009] As a preferred technical solution of the utility model, a string groove is provided inside each of the first upper pulley, the second upper pulley, the first lower pulley, and the second lower pulley, wherein two ends of the first main string are respectively wound in the string grooves of the first upper pulley and the first lower pulley, wherein two ends of the second main string are respectively wound in the string grooves of the second upper pulley and the second lower pulley.

[0010] As a preferred technical solution of the utility model, the first upper bow piece, the first upper pulley, the first lower bow piece, the first lower pulley, and the first main string are located in the same plane.

[0011] As a preferred technical solution of the utility model, the second upper bow piece, the second upper pulley, the second lower bow piece, the second lower pulley, and the second main string are located in the same plane.

[0012] As a preferred technical solution of the utility model, a first chord groove and a second chord groove are opened on the side wall of the magnetic seat, wherein the depth of the first chord groove is greater than the depth of the second chord groove, wherein the first main chord is located in the first chord groove, and the second main chord is located in the second chord groove.

[0013] As a preferred technical solution of the utility model, a pull ring is installed on the side wall of the magnetic base, wherein the first string groove and the second string groove are opened on the side wall connecting the magnetic base and the pull ring.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a cross double main string composite bow pulley, which has the following beneficial effects:

[0016] The cross double main string compound bow pulley is configured by arranging the first upper bow piece, the first upper pulley, the first lower bow piece, the first lower pulley, and the first main string in the same plane, arranging the second upper bow piece, the second upper pulley, the second lower bow piece, the second lower pulley, and the second main string in the same plane, and installing the magnetic seat at the intersection of the first main string and the second main string, so that the magnetic seat is subjected to the pulling force of the first main string and the second main string in both vertical and horizontal directions, thereby making it difficult for the magnetic seat to swing and displace in the vertical and horizontal directions, thereby achieving the effect of improving the hit rate accuracy of the compound bow. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the bowstring of the utility model in a stretched state;

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the bowstring of the utility model in an unstretched state.

[0020] In the figure: 1. bow body; 2. first upper bow piece; 3. second upper bow piece; 4. second upper pulley; 5. first upper pulley; 6. first main string; 7. magnetic seat; 8. second main string; 9. first lower pulley; 10. second lower pulley; 11. second lower bow piece; 12. first lower bow piece; 13. pull ring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] See also Figure 1-3A cross double main string composite bow pulley comprises a bow body 1, wherein a first upper bow piece 2, a second upper bow piece 3, a first lower bow piece 12, and a second lower bow piece 11 are respectively installed at both ends of the bow body 1, wherein the first upper bow piece 2, the second upper bow piece 3, the first lower bow piece 12, and the second lower bow piece 11 are vertically installed at both ends of the bow body 1, a first upper pulley 5 is installed on the end of the first upper bow piece 2 away from the bow body 1, and a second upper pulley 4 is installed on the end of the second upper bow piece 3 away from the bow body 1 A first lower pulley 9 is installed on the end of the first lower bow piece 12 away from the bow body 1, and a second lower pulley 10 is installed on the end of the second lower bow piece 11 away from the bow body 1. A first main string 6 is connected between the first upper pulley 5 and the first lower pulley 9, and a second main string 8 is connected between the second upper pulley 4 and the second lower pulley 10. A string groove is provided inside the first upper pulley 5, the second upper pulley 4, the first lower pulley 9, and the second lower pulley 10, wherein the two ends of the first main string 6 are respectively wound around In the string grooves of the first upper pulley 5 and the first lower pulley 9, the two ends of the second main string 8 are respectively wound in the string grooves of the second upper pulley 4 and the second lower pulley 10, wherein the first upper bow piece 2, the first upper pulley 5, the first lower bow piece 12, the first lower pulley 9, and the first main string 6 are located in the same plane, wherein the second upper bow piece 3, the second upper pulley 4, the second lower bow piece 11, the second lower pulley 10, and the second main string 8 are located in the same plane, and a magnetic seat 7 is installed at the intersection of the first main string 6 and the second main string 8, wherein the side wall of the magnetic seat 7 is provided with a first string groove and a second string groove, wherein the depth of the first string groove is greater than the depth of the second string groove, wherein the first main string 6 is located in the first string groove, and the second main string 8 is located in the second string groove, so that when the compound bow is stretched, the magnetic seat 7 is subjected to the pulling force of the first main string 6 and the second main string 8 in the horizontal and vertical directions, so that the magnetic seat 7 is not easy to swing in the horizontal and vertical directions, thereby achieving the effect of improving the accuracy of the compound bow hit rate.

[0025] In this embodiment, a pull ring 13 is installed on the side wall of the magnetic base 7, wherein the first string groove and the second string groove are provided on the side wall where the magnetic base 7 is connected to the pull ring 13. Through the pull ring 13, the magnetic base can be easily pulled during the use of the compound bow to prevent the magnetic base from slipping from the user's hand.

[0026] Working principle: When the compound bow is pulled, the first main string 6 and the second main string 8 can generate tension in the vertical and horizontal directions, thereby minimizing the swing amplitude of the magnetic seat in the vertical and horizontal directions to the greatest extent, thereby achieving the effect of increasing the accuracy of the compound bow's hit rate.

[0027] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cross double main string composite bow pulley, comprising a bow body (1), characterized in that: The two ends of the bow body (1) are respectively provided with a first upper bow piece (2), a second upper bow piece (3), a first lower bow piece (12), and a second lower bow piece (11); a first upper pulley (5) is provided on the end of the first upper bow piece (2) away from the bow body (1); a second upper pulley (4) is provided on the end of the second upper bow piece (3) away from the bow body (1); a first lower pulley (9) is provided on the end of the first lower bow piece (12) away from the bow body (1); a second lower pulley (10) is provided on the end of the second lower bow piece (11) away from the bow body (1); a first main string (6) is connected between the first upper pulley (5) and the first lower pulley (9); a second main string (8) is connected between the second upper pulley (4) and the second lower pulley (10); and a magnetic seat (7) is provided at the intersection of the first main string (6) and the second main string (8).

2. A cross double main string composite bow pulley according to claim 1, characterized in that: The first upper pulley (5), the second upper pulley (4), the first lower pulley (9), and the second lower pulley (10) are each provided with a string groove, wherein two ends of the first main string (6) are respectively wound in the string grooves of the first upper pulley (5) and the first lower pulley (9), wherein two ends of the second main string (8) are respectively wound in the string grooves of the second upper pulley (4) and the second lower pulley (10).

3. The cross double main string composite bow pulley according to claim 1, characterized in that: The first upper limb (2), the first upper pulley (5), the first lower limb (12), the first lower pulley (9), and the first main string (6) are located in the same plane.

4. The cross double main string composite bow pulley according to claim 1, characterized in that: The second upper limb (3), the second upper pulley (4), the second lower limb (11), the second lower pulley (10), and the second main string (8) are located in the same plane.

5. The cross double main string composite bow pulley according to claim 1, characterized in that: A first chord groove and a second chord groove are provided on the side wall of the magnetic seat (7), wherein the depth of the first chord groove is greater than the depth of the second chord groove, wherein the first main chord (6) is located in the first chord groove, and the second main chord (8) is located in the second chord groove.

6. A cross double main string composite bow pulley according to claim 5, characterized in that: A pull ring (13) is installed on the side wall of the magnetic base (7), wherein the first string groove and the second string groove are opened on the side wall where the magnetic base (7) and the pull ring (13) are connected.

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