Composite bow double-main-chord eccentric wheel chord fixing structure

Abstract

The utility model provides a composite bow double-main-string eccentric wheel string fixing structure, and belongs to the technical field of sports equipment. The string penetrating hole is formed in the eccentric wheel with the two wheel grooves, the two ends of the string penetrating hole face the two wheel grooves respectively, and meanwhile the string pressing assembly is arranged on the eccentric wheel and located at the string penetrating hole, so that the middle of a bowstring can penetrate through the string penetrating hole, and the two ends of the bowstring are wound in the two wheel grooves respectively. The bowstring penetrating hole is formed in the eccentric wheel, and the bowstring located in the bowstring penetrating hole is pressed or loosened through the bowstring pressing assembly, so that the bowstring at the structure, used for bowstring adjustment, on the eccentric wheel can be an independent whole. The bowstring in the two wheel grooves can be adjusted at the same time by directly pulling one side of the bowstring after the bowstring pressing assembly is loosened, adjustment is more convenient, in addition, structural deformation damage caused by the problems of bowstring falling or uneven stress and the like during adjustment can be avoided, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sports equipment, in particular to a double-main-string eccentric wheel string fixing structure for a compound bow. Background Technique

[0002] As a bow that can both shoot arrows and launch steel balls, a compound bow is usually configured with double main strings. By acting on both sides of the launcher through the double main strings respectively, the elastic force and stability are enhanced, and the performance of the compound bow is improved.

[0003] At present, the two ends of the two main strings of the existing compound bows on the market are usually wound around the eccentric wheels at both ends of the bow body respectively, that is, the two ends of the double main strings are wound around the eccentric wheel group. For example, in a string fixing adapter ring and a double-main-string compound bow disclosed in Patent CN221147338U, a pulley one and a pulley two are respectively rotatably connected to both ends of the bow body (that is, the above-mentioned eccentric wheels at both ends of the bow body). The pulley one and the pulley two have the same structure and are respectively provided with two parallel grooves on the outer circumferential surface of their wheel bodies. Each groove is wound with a main string to ensure that the main string can be stably wound around the pulley one and the pulley two to prevent the string from slipping off. In addition, a notch is provided on the circumferential surface of the wheel bodies of the pulley one and the pulley two, and two button-type string hanging points are provided in the notch. The two ends of the main string one and the main string two are respectively hung on the rings on the button-type string hanging points on the pulley one and the pulley two, so as to realize the installation of the two main strings on the two pulleys. Although the above structure can already better meet the installation of the double main strings on the eccentric wheel group, however, it usually uses two completely independent main strings, and both ends of each main string are independently hung on the rings on the corresponding button-type string hanging points. If the lengths of the two main strings are inconsistent during use, the two main strings need to be adjusted separately, and the adjustment process is relatively cumbersome. In addition, when adjusting a single main string alone, the force on one side of the eccentric wheel group will be significantly different from that on the other side, which is likely to cause deformation of the structure and pose a great potential safety hazard. Summary of the Invention

[0004] Aiming at the above problems existing in the prior art, the present invention aims to provide a double-main-string eccentric wheel string fixing structure for a compound bow, in which a string passing hole is provided on the eccentric wheel, and both ends of the string passing hole are respectively arranged towards two grooves on the outer circumferential surface of the eccentric wheel. At the same time, a string pressing component acting on the string passing hole is provided on the eccentric wheel, so that the middle part of a bowstring can pass through the string passing hole and be pressed tightly by the string pressing component, and both ends of the bowstring can be respectively clamped into the two grooves, meeting the installation requirements of the bowstring on the eccentric wheel. At the same time, the bowstring at the adjustment part for bowstring adjustment on the eccentric wheel is an independent integral structure, and the adjustment requirement can be met by loosening the string pressing component and pulling the bowstring to one side. The adjustment is more convenient, and at the same time, the bowstring is always located on the eccentric wheel, thus avoiding the problems of structural damage and potential safety hazards caused by uneven force or the falling off of the main string during adjustment.

[0005] The specific technical solution is as follows:

[0006] A fixed-string structure of a compound bow with double main strings and eccentric wheels is used for fixing and adjusting the bowstring. It has the following characteristics: including an eccentric wheel, on the outer peripheral surface of the eccentric wheel, two wheel grooves are arranged in parallel. At the same time, on the eccentric wheel and along its axis, a string-passing hole is opened, and both ends of the string-passing hole are arranged towards the two wheel grooves respectively. The middle part of a bowstring is passed through the string-passing hole, and both ends are respectively wound in the two wheel grooves. And on the eccentric wheel and at the position of the string-passing hole, a string-pressing component is arranged, and the string-pressing component presses or loosens the bowstring passed through the string-passing hole.

[0007] In the above-mentioned fixed-string structure of a compound bow with double main strings and eccentric wheels, the string-pressing component includes an adjusting screw. An adjusting hole communicating with the string-passing hole is opened on the eccentric wheel. The adjusting screw is in threaded connection with the adjusting hole, and one end extends into the string-passing hole to press or loosen the bowstring.

[0008] In the above-mentioned fixed-string structure of a compound bow with double main strings and eccentric wheels, the string-pressing component further includes a pressing block. The pressing block is slidably arranged in the adjusting hole, and one end of the pressing block extends into the adjusting hole to press or loosen the bowstring. At the same time, one end of the pressing block located in the adjusting hole abuts against one end of the adjusting screw.

[0009] In the above-mentioned fixed-string structure of a compound bow with double main strings and eccentric wheels, the pressing block is of a spherical structure.

[0010] In the above-mentioned fixed-string structure of a compound bow with double main strings and eccentric wheels, the adjusting screw is a stop screw.

[0011] In the above-mentioned fixed-string structure of a compound bow with double main strings and eccentric wheels, a string-hanging group is arranged on the eccentric wheel and beside the string-passing hole. The string-hanging group includes two string-hanging buckles. The two string-hanging buckles are located on both sides of the eccentric wheel and respectively correspond to the two wheel grooves.

[0012] In the above-mentioned fixed-string structure of a compound bow with double main strings and eccentric wheels, a mounting hole is spaced apart from the string-passing hole on the eccentric wheel. A through hole is opened on one string-hanging buckle, a locking hole is opened on the other string-hanging buckle, and a locking screw passes through the through hole and the mounting hole and then is connected with the locking hole.

[0013] In the above-mentioned fixed-string structure of a compound bow with double main strings and eccentric wheels, a secondary string adjusting part is installed on the eccentric wheel. A secondary string groove is arranged on the secondary string adjusting part. At the same time, a first adjusting part is arranged on the eccentric wheel. A number of first adjusting holes are arranged at intervals on the first adjusting part. A second adjusting part is arranged on the secondary string adjusting part. A number of second adjusting holes are arranged at intervals on the second adjusting part. And one end of the secondary string adjusting part is connected with a first adjusting hole on the first adjusting part. At the same time, a number of second adjusting holes are selected on the second adjusting part and connected with the eccentric wheel.

[0014] In the above-mentioned double-main-string eccentric-wheel string-setting structure of a compound bow, a first adjustment mark is provided on the first adjustment part, and each first adjustment hole corresponds to an independent first adjustment mark. At the same time, a second adjustment mark is provided on the second adjustment part, and each second adjustment hole corresponds to an independent second adjustment mark.

[0015] The positive effects of the above technical solution are:

[0016] In the above-mentioned double-main-string eccentric-wheel string-setting structure of a compound bow, by providing two juxtaposed wheel grooves on the eccentric wheel and opening a string-passing hole on the eccentric wheel with both ends extending towards the two wheel grooves respectively, the middle part of a bowstring can be passed through the string-passing groove so that its two ends are respectively located in the two wheel grooves, making the bowstring at the adjustment part a single one, with better integrity. At the same time, a string-pressing assembly is provided on the eccentric wheel at the position of the string-passing hole. By pressing or loosening the bowstring passing through the string-passing hole with the string-pressing assembly, during subsequent use, the adjustment requirement can be met by directly pulling one end of the bowstring without disassembling and assembling the bowstring, making the adjustment more convenient. At the same time, it also avoids problems such as string slipping and uneven force during adjustment caused by separately installing two independent bowstrings at the existing adjustment structure, avoids structural damage, and improves safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of one perspective of an embodiment of the double-main-string eccentric-wheel string-setting structure of a compound bow of the present invention;

[0018] Figure 2 It is a structural diagram of another perspective of an embodiment of the double-main-string eccentric-wheel string-setting structure of a compound bow of the present invention;

[0019] Figure 3 It is a structural diagram of the string-pressing assembly of the double-main-string eccentric-wheel string-setting structure of a compound bow of the present invention;

[0020] Figure 4 It is a structural diagram of the string-hanging group of the double-main-string eccentric-wheel string-setting structure of a compound bow of the present invention.

[0021] In the drawings: 1. Eccentric wheel; 11. Wheel groove; 12. String-passing hole; 13. Adjustment hole; 14. Sub-string adjustment part; 15. First adjustment part; 141. Sub-string groove; 142. Second adjustment part; 151. First adjustment hole; 152. First adjustment mark; 1421. Second adjustment hole; 1422. Second adjustment mark; 2. String-pressing assembly; 21. Adjusting screw; 22. Pressing block; 3. String-hanging group; 31. String-hanging buckle; 32. Locking screw. DETAILED DESCRIPTION OF THE INVENTION

[0022] In order to make the technical means, creative features, achieved purposes and functions realized by the present invention easy to understand, the following embodiments are combined with the attachedFigure 1 To the appendix Figure 4 A specific description of the technical solution provided by the present utility model is given below, but the following content is not a limitation of the present utility model.

[0023] Figure 1 It is a structural diagram of a perspective view of an embodiment of a fixed-string structure of a compound bow with double main strings and eccentric wheels. Figure 2 It is a structural diagram of another perspective view of an embodiment of a fixed-string structure of a compound bow with double main strings and eccentric wheels. As Figure 1 and Figure 2 shown, the fixed-string structure of the compound bow with double main strings and eccentric wheels provided in this embodiment is used for the fixation and adjustment of the bowstring. At this time, the fixed-string structure of the compound bow with double main strings and eccentric wheels provided in this embodiment includes an eccentric wheel 1, and an adjustment structure is provided on the eccentric wheel 1, and the bowstring is fixed and adjusted through the adjustment structure on the eccentric wheel 1.

[0024] Specifically, two wheel grooves 11 are arranged in parallel on the outer peripheral surface of the eccentric wheel 1, which are usually used to install the two main strings of a double-main-string compound bow, and are used here as an embedding structure for both ends of a single bowstring. At the same time, a string-passing hole 12 is opened on the eccentric wheel 1 and along its axis, and both ends of the string-passing hole 12 are arranged towards the two wheel grooves 11 respectively. Preferably, both ends of the string-passing hole 12 are communicated with the two wheel grooves 11 respectively, which provides conditions for a single bowstring to be arranged both in the string-passing hole 12 and in the two wheel grooves 11. During installation, the middle part of a bowstring is passed through the string-passing hole 12 and both ends are respectively wound in the two wheel grooves 11, so that both ends of the same bowstring can be respectively located in the two wheel grooves 11 and the bowstrings in the two wheel grooves 11 are connected through the string-passing hole 12, so as to ensure that the bowstrings in the two wheel grooves 11 are the same bowstring, which is convenient for subsequent adjustment by directly pulling one side of the bowstring, facilitates the adjustment, and at the same time avoids the problems of easy string detachment and uneven force when using two independent bowstrings in the prior art, prevents structural deformation and damage, and improves safety. And a string-pressing assembly 2 is also provided on the eccentric wheel 1 and at the position of the string-passing hole 12. At this time, the bowstring passing through the string-passing hole 12 can be pressed or loosened by the string-pressing assembly 2. When in normal use, the bowstring in the string-passing hole 12 can be pressed by the string-pressing assembly 2 to ensure the normal use of the compound bow, and when the bowstring needs to be adjusted or replaced, the bowstring in the string-passing hole 12 can be loosened by the string-pressing assembly 2, which is more convenient to use. In addition, the string-passing hole 12 and the string-pressing assembly 2 together constitute an adjustment structure on the eccentric wheel 1 for fixing and adjusting the bowstring, realizing rapid adjustment, avoiding the problem of string detachment, effectively preventing the structural deformation of the compound bow, and improving the use safety.

[0025] Figure 3 It is a structural diagram of the string-pressing assembly of a fixed-string structure of a compound bow with double main strings and eccentric wheels of the present utility model. As Figure 1 、 Figure 2as well as Figure 3 As shown, the string pressing assembly 2 installed on the eccentric wheel 1 and located at the string passing hole 12 further includes an adjusting screw 21. At this time, an adjusting hole 13 connected to the string passing hole 12 is opened on the eccentric wheel 1. Preferably, the adjusting hole 13 is arranged along the radial direction of the string passing hole 12, so that the adjusting hole 13 can face the string passing hole 12, which provides conditions for the string pressing assembly 2 to accurately act on the bowstring inserted in the string passing hole 12. In addition, the adjusting screw 21 is threadedly connected to the adjusting hole 13 and one end extends into the string passing hole 12 to press or loosen the bowstring. That is, when the bowstring needs to be adjusted, the user only needs to tighten or loosen the adjusting screw 21 to complete the operation, and the adjustment is more convenient.

[0026] More specifically, the string pressing assembly 2 includes a pressing block 22 in addition to the above-mentioned adjusting screw 21. During installation, the pressing block 22 is slidably arranged in the adjusting hole 13 so that the pressing block 22 can move in the adjusting hole 13. At the same time, one end of the pressing block 22 is extended into the adjusting hole 13 to press or loosen the bowstring. The pressing block 22 contacts or loosens the bowstring. At the same time, one end of the pressing block 22 located in the adjusting hole 13 is abutted against one end of the adjusting screw 21, thereby avoiding the problem that the end of the adjusting screw 21 with threads directly contacts the bowstring and excessively wears the bowstring when the adjusting screw 21 is turned. The bowstring is only horizontally squeezed relative to the pressing block 22 without sliding friction, thereby extending the service life of the bowstring.

[0027] More specifically, as a transition structure between the adjusting screw 21 and the bowstring, the pressure block 22 is preferably a spherical structure, that is, the pressure block 22 can still maintain the same contact surface to press the bowstring when it moves in no direction in the adjusting hole 13. At the same time, the surface of the pressure block 22 contacting the bowstring remains unchanged. In addition, the surface in contact with the bowstring can be kept smooth at all times, further avoiding wear of the bowstring.

[0028] More specifically, the adjusting screw 21 is preferably a stop screw, which ensures that there is no protruding head structure at the end of the adjusting screw 21, better adapts to the installation environment of the eccentric wheel 1 with a smaller processing area, and also realizes the hidden installation of the adjusting screw 21 in the adjusting hole 13, thereby improving the aesthetics and making the structural design more reasonable.

[0029] Figure 4 This is a structural diagram of the string hanging group of a composite bow double main string eccentric wheel string setting structure of the utility model. Figure 1 , Figure 2 as well as Figure 4As shown in the figure, a string hanging group 3 is further provided on the eccentric wheel 1 and beside the string threading hole 12. The string hanging group 3 includes two string hanging buckles 31. During installation, the two string hanging buckles 31 are respectively installed on both sides of the eccentric wheel 1 and respectively correspond to two wheel grooves 11, so that each wheel groove 11 has a corresponding string hanging buckle 31. And a string hanging groove is provided on each string hanging opening. The end of the bowstring is hooked through the string hanging groove. That is, the installation purpose of the ends of two independent bowstrings used on the traditional eccentric wheel 1 is realized through the two string hanging buckles 31 of the string hanging group 3, so that the eccentric wheel 1 can also be used as the eccentric wheel 1 in the traditional compound bow, with better structural flexibility and better adaptability.

[0030] More specifically, an installation hole is further spaced apart on the eccentric wheel 1 and parallel to the string threading hole 12. At this time, a through hole is provided on one string hanging buckle 31 of the string hanging group 3, and a locking hole is provided on the other string hanging buckle 31. During installation, a locking screw 32 is sequentially passed through the through hole and the installation hole and then connected to the locking hole, realizing the purpose of installing the two string hanging buckles 31 of the string hanging group 3 on the eccentric wheel 1 through the locking screw 32, and the disassembly and assembly are more convenient.

[0031] More specifically, a secondary string adjusting part 14 is further installed on the eccentric wheel 1, and the secondary string is installed through the secondary string adjusting part 14. At this time, a secondary string groove 141 is provided on the secondary string adjusting part 14, and the secondary string is wound through the secondary string groove 141 to maintain the reliability of the installation of the secondary string. In addition, a first adjusting part 15 is provided on the eccentric wheel 1, and a number of first adjusting holes 151 are arranged at intervals on the first adjusting part 15. At the same time, a second adjusting part 142 is provided on the secondary string adjusting part 14, and a number of second adjusting holes 1421 are arranged at intervals on the second adjusting part 142. During installation, both ends of the secondary string adjusting part 14 are installed on the eccentric wheel 1. At this time, one end of the secondary string adjusting part 14 is connected to a first adjusting hole 151 on the first adjusting part 15, and a number of second adjusting holes 1421 on the second adjusting part 142 are selected and connected to the eccentric wheel 1, realizing the multi-point connection between the secondary string adjusting part 14 and the eccentric wheel 1, improving the stability of the installation of the secondary string adjusting part 14. In addition, by selecting different first adjusting holes 151 and second adjusting holes 1421, the installation position of the secondary string adjusting part 14 on the eccentric wheel 1 is adjusted, so as to realize the adjustment of the secondary string wound on the secondary string adjusting part 14, and the structural design is more reasonable. Preferably, the connection between one end of the secondary string adjusting part 14 and the selected first adjusting hole 151 is a screw connection. Similarly, the connection between the eccentric wheel 1 and the selected second adjusting hole 1421 is also a screw connection, and the adjustment is more convenient.

[0032] More specifically, a first adjustment mark 152 is further provided on the first adjustment portion 15. At this time, each first adjustment hole 151 corresponds to an independent first adjustment mark 152. At the same time, a second adjustment mark 1422 is provided on the second adjustment portion 142, and each second adjustment hole 1421 corresponds to an independent second adjustment mark 1422. When adjusting the position of the auxiliary string adjustment portion 14 on the eccentric wheel 1, visual adjustment can be achieved through the first adjustment mark 152 and the second adjustment mark 1422, facilitating the user to obtain adjustment information and improving the usability.

[0033] The compound bow double main string eccentric wheel string fixing structure provided in this embodiment includes an eccentric wheel 1 with a string threading hole 12 and a string pressing assembly 2; by providing a string threading hole 12 in the eccentric wheel 1 with two wheel grooves 11, and the two ends of the string threading hole 12 are respectively arranged towards the two wheel grooves 11. At the same time, a string pressing assembly 2 is provided on the eccentric wheel 1 at the position of the string threading hole 12, so that the middle part of a bowstring can pass through the string threading hole 12 and the two ends are respectively wound around the two wheel grooves 11, and the bowstring located in the string threading hole 12 is tightened or loosened by the string pressing assembly 2, so that the bowstring at the structure for bowstring adjustment on the eccentric wheel 1 can be a single integral body. Therefore, when it is necessary to adjust the bowstring during use, the simultaneous adjustment requirement of the bowstring in the two wheel grooves 11 can be completed by directly pulling one side of the bowstring after loosening the string pressing assembly 2, which is more convenient for adjustment. In addition, it can also avoid structural deformation and damage caused by problems such as string detachment or uneven force during adjustment, improving safety.

[0034] The above are only the preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention. For those skilled in the art, it should be realized that all equivalent replacements and obvious changes made by using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A compound bow double main string eccentric wheel string setting structure, used for fixing and adjusting the bow string, characterized in that: include: An eccentric wheel, two wheel grooves are arranged in parallel on the outer circumference of the eccentric wheel, and at the same time, a string hole is opened on the eccentric wheel and located in its axial direction, and the two ends of the string hole are respectively arranged toward the two wheel grooves, the middle part of a bowstring is passed through the string hole and the two ends are respectively wound in the two wheel grooves, and a string pressing assembly is arranged on the eccentric wheel and located at the string hole, and the string pressing assembly presses or loosens the bowstring passed through the string hole.

2. The compound bow double main string eccentric wheel string setting structure according to claim 1, characterized in that: The string-pressing assembly includes an adjusting screw. The eccentric wheel is provided with an adjusting hole connected to the string-threading hole. The adjusting screw is threadedly connected to the adjusting hole and one end of the adjusting screw extends into the string-threading hole to tighten or loosen the bowstring.

3. The compound bow double main string eccentric wheel tuning structure according to claim 2, characterized in that: The string-pressing assembly also includes a pressure block, which is slidably disposed in the adjustment hole, and one end of the pressure block extends into the adjustment hole and tightens or loosens the bowstring. At the same time, one end of the pressure block located in the adjustment hole abuts against one end of the adjustment screw.

4. The compound bow double main string eccentric wheel tuning structure according to claim 3, characterized in that: The pressing block is a spherical structure.

5. The double main chord eccentric wheel tuning structure for a composite bow according to any one of claims 2 to 4, characterized in that: The adjusting screw is a stop screw.

6. The compound bow double main string eccentric wheel tuning structure according to claim 1, characterized in that: A string hanging group is arranged on the eccentric wheel and beside the string threading hole. The string hanging group includes two string hanging buckles. The two string hanging buckles are located on both sides of the eccentric wheel and correspond to the two wheel grooves respectively.

7. The compound bow double main string eccentric wheel tuning structure according to claim 6, characterized in that: A mounting hole is provided on the eccentric wheel and parallel to the string hole, a through hole is provided on one string hanging buckle, a locking hole is provided on the other string hanging buckle, and a locking screw passes through the through hole and the mounting hole and is connected to the locking hole.

8. The compound bow double main string eccentric wheel tuning structure according to claim 1, characterized in that: A secondary chord adjusting part is installed on the eccentric wheel, and a secondary chord groove is arranged on the secondary chord adjusting part. At the same time, a first adjusting part is arranged on the eccentric wheel, and a plurality of first adjustment holes are arranged at intervals on the first adjusting part. A second adjusting part is arranged on the secondary chord adjusting part, and a plurality of second adjustment holes are arranged at intervals on the second adjusting part. In addition, one end of the secondary chord adjusting part is connected to one of the first adjustment holes on the first adjustment part, and at the same time, a plurality of the second adjustment holes are selected on the second adjustment part to be connected to the eccentric wheel.

9. The compound bow double main string eccentric wheel string setting structure according to claim 8, characterized in that: The first adjustment portion is provided with a first adjustment mark, and each of the first adjustment holes corresponds to an independent first adjustment mark. Meanwhile, the second adjustment portion is provided with a second adjustment mark, and each of the second adjustment holes corresponds to an independent second adjustment mark.

Images