Composite bow double-string-stopping rubber structure

Abstract

A double-string-stopping rubber structure of a composite bow relates to the technical field of composite bows and comprises first string-stopping rubber located on the upper portion, second string-stopping rubber located on the lower portion and a V-shaped mounting frame, the V-shaped mounting frame is arranged in a side standing mode, and the first string-stopping rubber and the second string-stopping rubber are fixed to two free ends of the V-shaped mounting frame respectively and are opposite to a main string of the composite bow. And the tail end of the V-shaped mounting frame is connected with the end part of a chord dividing middle plate of the composite bow through an angle adjusting mechanism. According to the novel double-string-stopping-rubber structure, the angle of the string stopping rubber can be adjusted, the design thought of an existing string stopping rubber is broken through, the main strings are in contact with the string stopping rubber in sequence, the limiting grooves are combined to restrain the main strings, the stability when the steel balls are ejected can be remarkably improved, and then the shooting precision is improved.

Description

Technical Field

[0001] This invention relates to the field of composite bow technology, specifically to a composite bow double stop glue structure. Background Technology

[0002] Modern compound bows utilize pulley systems based on lever principles to achieve set pull force and draw distance requirements. The technique involves: installing fiberglass limbs on the bow handle and pre-bending them to a predetermined deflection stress; installing pulley systems based on lever principles on the limbs, with the geometric curvature of the pulley system designed according to the pull force curve and draw distance; installing a low-creep polymer main string and secondary string on the pulley system. The main string is the line drawn when the bow is drawn, used to transfer the pull force to the arrow; the secondary string is another type of line connecting the upper and lower pulleys, making the pulley system a labor-saving structure and an important structure for controlling the draw distance. The length and diameter of the main string and secondary string are matched to the draw distance and rebound speed; installing a D-ring rope or magnetic base on the main string for positioning the launched object in space. A dual-purpose compound bow refers to a compound bow that can fire both ordinary arrows and steel balls using a ball-launching mechanism such as a magnetic base.

[0003] When using a magnetic base to fire steel balls in a typical compound bow, the bowstring contacts the stop before the ball separates from the magnetic base. During this process, the magnetic base, under gravity, slightly presses down on the ball before releasing it, causing unilateral wear on both the magnetic base and the stop. As the wear deepens and the hardness of the stop and bowstring changes with different temperatures, the downward pressure exerted by the magnetic base on the ball also changes, affecting shooting accuracy. This can be addressed by increasing the initial distance between the stop and the main string and by installing two sets of stoppers above and below the magnetic base. However, a larger initial distance between the stop and the main string leads to increased bowstring aftershock, resulting in a decreased shooting feel. Therefore, utility model application CN202322181111 provides a technical solution with a double stop structure, such as... Figure 7 As shown, the device includes a support frame, an upper and lower shock absorber fixedly mounted on the support frame, and string-stopping rubber blocks fixedly mounted on the free ends of the upper and lower shock absorber rods, respectively. A firing window is provided in the middle of the support frame. The upper and lower shock absorber rods are located at the upper and lower ends of the firing window, respectively, and are perpendicular to the support frame. The support frame has connection holes for fixed connection with the compound bow body. The dual-purpose compound bow includes the compound bow body and the above-mentioned double string-stopping structure, which can well adapt to the string-stopping requirements of various compound bows. It has a simple structure, is easy to install, and is compact. It can effectively solve the problem of the magnetic seat of the dual-purpose compound bow affecting the accuracy of steel ball launching.

[0004] However, the applicant's experiments have shown that the patent document's solution to the problem of steel ball firing accuracy still has limitations. Even with two string stoppers at the same distance from the main string, the firing accuracy is even lower than with a single string stopper. This is because while the simultaneous contact of the two string stoppers with the main string can mitigate some wear caused by the magnetic seat's misalignment, it doesn't consider the force relationship at the moment the magnetic seat separates from the steel ball. In this state, the magnetic seat is facing the bow handle (ideal state), and the steel ball needs to separate from the magnetic seat instantaneously, like forcibly pulling apart two tightly attracted magnets. This instantaneous release of force affects the steel ball's stability, thus impacting its final firing accuracy. Furthermore, the string stopper in this document cannot be angled, and the string stoppers lack a structure to limit the bowstring's lateral movement. Therefore, further improvements are needed. Utility Model Content

[0005] This invention discloses a composite bow double-string stop glue structure, which aims to address the problem that "the shooting accuracy of double-string stoppers needs to be further improved" in the prior art.

[0006] To achieve the above objectives, the technical solution of this invention is as follows:

[0007] A composite bow double-string stop structure includes a first string stop glue located at the top, a second string stop glue located at the bottom, and a V-shaped mounting bracket. The V-shaped mounting bracket is sideways. The first and second string stop glues are respectively fixed to the two free ends of the V-shaped mounting bracket and are opposite to the main string of the composite bow. The tail end of the V-shaped mounting bracket is connected to the end of the string splitting plate of the composite bow through an angle adjustment mechanism.

[0008] Preferably, the V-shaped mounting bracket includes two V-shaped plates arranged opposite each other, and a baffle is fixedly connected between the two free ends of the two V-shaped plates. The front surface of the baffle and the inner surface of the two free ends form a space for installing the anti-slip adhesive. The first anti-slip adhesive and the second anti-slip adhesive are respectively installed in the upper and lower installation spaces.

[0009] Preferably, the end faces of the first and second anti-chord adhesives facing the main chord are provided with limiting grooves for constraining the position of the main chord.

[0010] Preferably, the first and second anti-string adhesives are fixedly connected to the ends of the V-shaped plate by the first bolts.

[0011] Preferably, the two V-shaped plates have coaxially opposite shaft holes at their tail corners. The angle adjustment mechanism includes a hinge seat, which is rotatably connected to the shaft hole via a hinge shaft. The hinge seat is fixedly connected to the end of the chord-splitting middle plate.

[0012] Preferably, the hinge seat includes two L-shaped plates arranged opposite each other. The corners of the L-shaped plates are provided with outwardly protruding arc-shaped structures. A hinge shaft is passed through and fixedly connected to the arc-shaped structure. The inner section of the hinge shaft passes through the corresponding shaft hole and is rotatably connected to the shaft hole.

[0013] Preferably, the bottom ends of the two L-shaped plates are fixedly connected by a first connecting plate, and the top ends are fixedly connected by a second connecting plate. The top end of the second connecting plate is provided with a first fixing plate along the longitudinal direction, and the top end of the baffle located on the upper side is integrally connected with the second fixing plate. The second fixing plate is provided with a strip hole, and the first fixing plate is provided with a threaded hole. An adjusting bolt is connected between the strip hole and the threaded hole. The adjusting bolt passes through the strip hole and is connected to the threaded hole. The tilt angle of the V-shaped mounting bracket can be adjusted by rotating the adjusting bolt.

[0014] Preferably, a connecting rod is fixedly connected to the bottom end of the first fixing plate, and a plurality of positioning holes are evenly distributed on the connecting rod. The end of the chord-splitting middle plate is provided with a through groove for inserting the connecting rod, and the through groove is fixedly connected to the positioning holes on the connecting rod by positioning bolts that penetrate the inner and outer walls of the through groove.

[0015] The beneficial effects of this novel composite bow double-string stop adhesive structure:

[0016] This novel double-stop rubber structure allows for adjustment of the stop rubber angle, breaking through the previous design concept. By combining the main string's sequential contact with the stop rubber with the constraint of the limiting groove on the main string, it can significantly improve the stability of the steel ball during firing, thereby improving shooting accuracy. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this invention, the accompanying drawings used in the embodiments are briefly described below, which constitute a part of the specification and are used together with the embodiments of this invention to explain this invention, but do not constitute a limitation on this invention.

[0018] Figure 1 A side view of the structure of this novel invention;

[0019] Figure 2 A top view of the structure of this novel invention;

[0020] Figure 3 A front view of the structure of this novel V-shaped mounting bracket;

[0021] Figure 4 A side view of the structure of the second anti-string adhesive of this novel invention, showing its initial contact with the main string;

[0022] Figure 5 A schematic diagram illustrating the influence of the second anti-string adhesive of this novel type on the connection between the magnetic base and the steel ball when it first contacts the main string.

[0023] Figure 6 A schematic diagram illustrating the influence of the first anti-string adhesive of this novel type on the positional relationship between the magnetic base and the steel ball when it comes into contact with the main string.

[0024] Figure 7 A schematic diagram of the structure of the compound bow and double stopper disclosed in the prior art.

[0025] 100. Connecting rod; 101. Screw hole; 102. Positioning hole; 200. Hinge seat; 201. First fixing plate; 202. Second L-shaped plate; 203. First L-shaped plate; 204. First connecting plate; 205. Second connecting plate; 300. V-shaped mounting bracket; 301. Second fixing plate; 3011. Strip hole; 302. Upper free end; 303. Lower free end; 304. Second V-shaped plate; 305. First V-shaped plate; 306. Baffle; 400. First bolt; 500. Adjusting bolt; 600. Hinge shaft; 700 701. String-stopping adhesive; 702. Limiting groove; 703. First string-stopping adhesive; 704. Second string-stopping adhesive; 805. String separator pulley; 806. Mounting base; 807. Diagonal brace; 908. Main string; 909. Magnetic base; 900. Steel ball; 901. Pull ring; 902. Counterclockwise rotation direction of magnetic base; 903. Tear strip; 904. Arrow indicating the pulling direction of the main string to the bottom of the magnetic base; 905. Clockwise rotation direction of the magnetic base; 1006. Arrow indicating the changing trend of the positional relationship between the steel ball and the magnetic base; 1107. Overall separation of the steel ball and the magnetic base;

[0026] 10. Existing string stop adhesive; 20. Bow handle; 30. Bow limb; 31. Bow limb rebound direction; 40. Pulley; 50. Bowstring; 60. String splitting plate; 601. String splitting plate end; 602. Schematic diagram of the connecting rod connected to the string splitting plate end but with non-adjustable relative position; 603. Positioning bolt; 604. Through groove; 70. Existing magnetic base. Detailed Implementation

[0027] The technical solutions of this invention will now be clearly and completely described with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0028] The following embodiments can be understood as explaining a partial structure of the present invention individually, or as explaining a larger structure of the present invention through a combination of multiple embodiments.

[0029] Example 1

[0030] A composite bow double-string stop glue structure, such as Figure 1-6As shown, it includes a first string stop adhesive 702 located at the top, a second string stop adhesive 703 located at the bottom, and a V-shaped mounting bracket 300. The V-shaped mounting bracket 300 is set on its side. The first string stop adhesive 702 and the second string stop adhesive 703 are respectively fixed to the two free ends of the V-shaped mounting bracket 300 and are opposite to the main string 900 of the compound bow. The tail end of the V-shaped mounting bracket 300 is connected to the end of the string splitting plate 60 of the compound bow through an angle adjustment mechanism.

[0031] In this embodiment, the composite bow structure is a commonly used technology, and the composite bow structure provided by the utility model with application number CN202322181111 can be selected, such as... Figure 7 As shown, the compound bow includes a handle 20, a bow plate 30, a string splitting plate 60 fixed to the handle 20, a pulley 40 disposed on the bow plate 30, and a bow string 50 wound on the pulley 40. The bow string 50 is provided with a release device. For compound bow structures not mentioned in this invention, refer to conventional dual-purpose compound bows. The specific structure will not be described in detail here.

[0032] In this embodiment, an angle adjustment mechanism is provided to adjust the angle of the V-shaped mounting bracket 300, thereby adjusting the distance between the first and second anti-straightening adhesives and the main string. Through adjustment and experimental verification, the optimal firing angle is obtained, thus improving shooting accuracy. Here, the anti-straightening adhesive refers to an adhesive block. This novel anti-straightening adhesive not only provides shock absorption but also helps improve shooting accuracy.

[0033] Example 2

[0034] like Figure 1-4 As shown, the V-shaped mounting bracket includes two V-shaped plates (first V-shaped plate 305 and second V-shaped plate 304) arranged opposite each other. A baffle 306 is fixedly connected between the two free ends of the two V-shaped plates. The front surface of the baffle 306 and the inner surfaces of the two free ends form a mounting space for the anti-slip adhesive. The first anti-slip adhesive 702 and the second anti-slip adhesive 703 are respectively installed in the upper and lower mounting spaces.

[0035] In this embodiment, the shapes of the first and second anti-slip adhesives can be selected as cubic or cylindrical structures.

[0036] Example 3

[0037] like Figure 2 , 3 As shown, the end faces of the first anti-string adhesive 702 and the second anti-string adhesive 703 facing the main string 900 are provided with limiting grooves 701 for constraining the position of the main string 900.

[0038] During launch, the main string contacts the limiting groove, which can prevent the main string from swaying significantly from side to side and improve the stability of the steel ball launch. The limiting groove can be a semi-circular groove, and its inner diameter should at least match the outer diameter of the main string or be larger than the outer diameter of the main string within the set error range.

[0039] Example 4

[0040] like Figure 1 As shown, the first anti-string adhesive 702 and the second anti-string adhesive 703 are respectively fixedly connected to the end of the V-shaped plate by the first bolt 400.

[0041] like Figure 1 , 2 As shown, the two V-shaped plates have coaxially opposite shaft holes at their tail corners. The angle adjustment mechanism includes a hinge seat 200, which is rotatably connected to the shaft hole via a hinge shaft 600. The hinge seat 200 is fixedly connected to the end of the chord-splitting middle plate 60.

[0042] like Figure 1 , 2 As shown, the hinge seat 200 includes two L-shaped plates (first L-shaped plate 203 and second L-shaped plate 202) arranged opposite to each other. The corner of the L-shaped plate is provided with an outwardly protruding arc-shaped structure (not marked in the figure). A hinge shaft 600 is connected through and fixedly connected to the arc-shaped structure. The inner section of the hinge shaft 600 passes through the corresponding shaft hole and is rotatably connected to the shaft hole.

[0043] Example 5

[0044] like Figure 1 , 2 As shown, the bottom ends of the two L-shaped plates are fixedly connected by a first connecting plate 204, and the top ends are fixedly connected by a second connecting plate 205. The top end of the second connecting plate 205 is provided with a first fixing plate 201 along the longitudinal direction. The top end of the baffle 306 located on the upper side is integrally connected with the second fixing plate 301. The second fixing plate 301 is provided with a strip hole 3011 (to make way for the adjusting bolt when adjusting the spacing). The first fixing plate 204 is provided with a threaded hole (not shown in the figure). An adjusting bolt 500 is connected between the strip hole 3011 and the threaded hole. The adjusting bolt 500 passes through the strip hole 3011 and is connected to the threaded hole. The tilt angle of the V-shaped mounting bracket 300 can be adjusted by rotating the adjusting bolt 500.

[0045] Example 6

[0046] like Figure 1 , 2As shown, a connecting rod 100 is fixedly connected to the bottom end of the first fixing plate 201. A plurality of positioning holes 102 are evenly distributed on the connecting rod 100. The end of the dividing plate 60 is provided with a through groove 604 for inserting the connecting rod 100. The through groove 604 is fixedly connected to the positioning holes 102 on the connecting rod 100 by positioning bolts 603 that penetrate the inner and outer walls of the through groove 604.

[0047] In this embodiment, the distance between the anti-chord adhesive and the main string can be adjusted by connecting different positioning holes with positioning bolts. Meanwhile, as... Figure 1 , 2 As shown, the side wall of the connecting rod 100 is also provided with a screw hole 101. The screw hole 101 is used to connect the string separator pulley 800. The string separator pulley 800 is fixed by the mounting base 801. The mounting base is connected to the connecting rod by the diagonal brace 802. A second bolt (not shown in the figure) passes through the diagonal brace 802 and is screwed into the screw hole 101.

[0048] The working principle of this new type:

[0049] 1. By setting a limiting groove 701 on the first and second stop glue to constrain the position of the main string 900, the main string can avoid large left and right swaying after contacting the limiting groove during firing, thus improving the stability of steel ball firing. The limiting groove can be a semi-circular groove, and its inner diameter should at least match the outer diameter of the main string or be greater than the outer diameter of the main string within a set error range. The above settings can improve the accuracy of steel ball firing.

[0050] 2. For example Figure 5 , 6 As shown, considering that the excessive force during the instantaneous separation of the steel ball 902 from the magnetic base 901 could cause instability in the steel ball's flight attitude, this new design breaks through the limitations of previous designs. It improves the instantaneous separation of the steel ball from the magnetic base to a gradual separation via tearing. Furthermore, during use, the spacing between the first and second anti-string adhesives and the main string is adjusted to be inconsistent; that is, one anti-string adhesive contacts the main string first, and the other anti-string adhesive contacts the main string later. Figure 5 As shown: The second anti-string adhesive 703 first contacts the main string. At this time, the pulling effect of the second anti-string adhesive on the main string under the magnetic base causes the bottom of the magnetic base to tilt backward, forming a tear 905 between the steel ball and the bottom of the magnetic base. As the steel ball moves forward and the pulling amplitude of the second anti-string adhesive on the main string increases, this tear 905 tends to expand continuously. Figure 6As shown, when the first stop glue also contacts the main string, the top of the magnetic base also receives the tension of the main string and begins to separate from the steel ball, thus achieving the effect of the steel ball separating from the magnetic base as a whole. In the above process, the steel ball gradually separates from the magnetic base, avoiding the instability of the steel ball's flight caused by excessive magnetic force due to instantaneous separation, thereby further improving shooting accuracy. Although the existing single stop glue technology can also make one side of the steel ball separate from the magnetic base first, it lacks the technology of using another stop glue to separate the other side of the steel ball from the magnetic base. Therefore, the tilted magnetic base will constrain the shooting direction of the steel ball at the moment of final separation (e.g., the downward tilt of the magnetic base will constrain the forward trajectory of the steel ball to a certain extent), thus limiting the improvement of shooting accuracy.

[0051] 3. Through several experimental verifications, it can be proven that the shooting method of this new invention can significantly improve accuracy. In particular, the angle adjustment of the V-shaped mounting bracket can be adjusted on-site according to the shooting effect to obtain the optimal V-shaped mounting bracket angle.

Claims

1. A composite bow double-string stop glue structure, characterized in that, It includes a first string stop glue located at the top, a second string stop glue located at the bottom, and a V-shaped mounting bracket. The V-shaped mounting bracket is set upright. The first and second string stop glues are respectively fixed to the two free ends of the V-shaped mounting bracket and are opposite to the main string of the compound bow. The tail end of the V-shaped mounting bracket is connected to the end of the middle plate of the compound bow through an angle adjustment mechanism.

2. The composite bow double-string stop glue structure as described in claim 1, characterized in that, The V-shaped mounting bracket includes two V-shaped plates arranged opposite each other. A baffle is fixedly connected between the two free ends of the two V-shaped plates. The front surface of the baffle and the inner surface of the two free ends form a space for installing the anti-slip adhesive. The first anti-slip adhesive and the second anti-slip adhesive are respectively installed in the upper and lower installation spaces.

3. The composite bow double-string stop adhesive structure as described in claim 2, characterized in that, The first and second anti-string adhesives have limiting grooves on their end faces facing the main string to constrain the position of the main string.

4. The composite bow double-string stop adhesive structure as described in claim 3, characterized in that, The first and second anti-string adhesives are respectively fixedly connected to the ends of the V-shaped plate by the first bolt.

5. The composite bow double-string stop adhesive structure as described in claim 4, characterized in that, Two V-shaped plates have coaxially opposite shaft holes at their tail corners. The angle adjustment mechanism includes a hinge seat, which is rotatably connected to the shaft hole via a hinge shaft. The hinge seat is fixedly connected to the end of the chord-splitting middle plate.

6. The composite bow double-string stop adhesive structure as described in claim 5, characterized in that, The hinge base includes two L-shaped plates arranged opposite each other. The corners of the L-shaped plates are provided with outwardly protruding arc-shaped structures. A hinge shaft is passed through and fixedly connected to the arc-shaped structure. The inner section of the hinge shaft passes through the corresponding shaft hole and is rotatably connected to the shaft hole.

7. The composite bow double-string stop adhesive structure as described in claim 6, characterized in that, The bottom ends of the two L-shaped plates are fixedly connected by a first connecting plate, and the top ends are fixedly connected by a second connecting plate. The top of the second connecting plate has a first fixing plate along the longitudinal direction. The top of the baffle on the upper side is integrally connected to the second fixing plate. The second fixing plate has a strip hole, and the first fixing plate has a threaded hole. An adjusting bolt is connected between the strip hole and the threaded hole. The adjusting bolt passes through the strip hole and is connected to the threaded hole. The tilt angle of the V-shaped mounting bracket can be adjusted by rotating the adjusting bolt.

8. The composite bow double-string stop adhesive structure as described in claim 7, characterized in that, A connecting rod is fixedly connected to the bottom end of the first fixed plate. Several positioning holes are evenly distributed on the connecting rod. The end of the chord plate is provided with a through groove for inserting the connecting rod. The through groove is fixedly connected to the positioning holes on the connecting rod by positioning bolts that penetrate the inner and outer walls of the through groove.

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