Split main chord structure of composite bow

Abstract

The utility model provides a split main chord structure of a composite bow, and belongs to the technical field of outdoor sports equipment. According to the utility model, the two main strings respectively correspond to the two pulleys of the composite bow, and the middle part of each main string is folded to form the U-shaped structure, so that each main string is provided with the folded part and the two strings, and the folded parts of the main strings are wound on the pulleys and are used for being communicated with the connecting channels of the two pulley grooves; the two strings enter the corresponding wheel grooves from the two ends of the connecting channel respectively, so that the two strings, located in the two wheel grooves, on the pulley can form a whole through the folded portion, when one string is pulled, the other string can move along with the pulley, in addition, the joints of the two main strings are connected to form a closed annular structure, and therefore the two strings can be conveniently pulled out. Therefore, when one main chord is adjusted, the other main chord can also be adjusted along with the main chord, the two main chords can be rapidly and accurately adjusted under the condition that the magnetic base is not unbound, and the use experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of outdoor sports equipment, in particular to a split main string structure of a compound bow. Background Art

[0002] As a relatively common type of modern bow, the compound bow can not only shoot arrows but also launch steel balls, can adapt to different usage scenarios, has better functionality, is suitable for outdoor carrying, and is favored by the majority of consumers.

[0003] Currently, the main strings of the existing compound bows on the market are usually two independent bowstrings, which are connected by a balance ring. For example, a fixed string adapter ring and a double main string compound bow disclosed in patent CN221147338U rotate pulley one and pulley two respectively connected to both ends of the bow body. Two parallel wheel grooves are respectively arranged on the outer circumferential surfaces of pulley one and pulley two. And, a notch is arranged on the circumferential surface of the wheel bodies of pulley one and pulley two, and two button-type string hanging points are arranged in the notch. The two ends of main string one and main string two are respectively hung on the sleeves on the button-type string hanging points. In addition, main string one is folded and bypassed around the directional adapter ring (the above-mentioned balance ring), and the sleeves at both ends of main string one are respectively hung on the two button-type string hanging points of pulley one. Main string two is folded and bypassed around the fixed string adapter ring from the opposite direction of main string one, and the sleeves at both ends of main string two are hung on the button-type string hanging points of pulley two. In addition, a magnetic seat is tied between the two ends of main string one or main string two and between the fixed string adapter ring and the corresponding button-type string hanging point. Although the above structure realizes the connection of the two main strings between the two pulleys and connects the two main strings through the balance ring, that is, the two main strings form an approximate "H" shape to meet the usage requirements. However, due to the influence of factors such as the direction of the user's force and the use for a long time during the use process, the bowstring will have an extension problem. In addition, since a magnetic seat is tied between the two strands formed by folding one of the main strings, and its two ends are directly hung on the corresponding button-type string hanging points through sleeves. At this time, both sides of the magnetic seat are fixed to the two strands, and at the same time, the ends of the two strands are also fixedly sleeved on the corresponding button-type string hanging points, that is, the distances between the two strands between the magnetic seat and the button-type string hanging points are equal and cannot change. If the extension lengths of the two strands between the magnetic seat and the button-type string hanging points are inconsistent due to factors such as the direction of force during the later use process, it will cause the problem of the inclination of the magnetic seat and the shooting direction, affecting the shooting accuracy. At this time, if you want to adjust the bowstring, you need to untie the magnetic seat first, then pull the two strands formed by folding the bowstring in the corresponding direction, and then tie the magnetic seat back to the bowstring after the adjustment is completed. There are deficiencies in the cumbersome operation process, difficult to achieve rapid adjustment, and affecting the use experience. Summary of the Invention

[0004] In view of the above problems existing in the prior art, the present invention aims to provide a split main string structure for a compound bow, in which two main strings are provided. Both of the two main strings are folded in half in the middle to form an approximate "U" - shaped structure, and the ends of the two main strings are connected to each other to form a closed ring. Moreover, the joint of the two main strings is located between the two pulleys. At the same time, the folded part of each main string is wound around the corresponding pulley, so that the two main strings can also maintain a closed ring structure after installation. The two strands of the main string for binding the magnetic seat are also an integral structure on the pulley and can move on the pulley. When the problem of inconsistent lengths of the two strands of the same main string occurs subsequently, the corresponding two strands can be directly pulled in the corresponding direction to achieve adjustment without unbinding the magnetic seat, which is more convenient and fast for adjustment and provides a better user experience.

[0005] The specific technical solutions are as follows:

[0006] A split main string structure for a compound bow, comprising two main strings. The two main strings are arranged between the two pulleys of the compound bow. Moreover, each pulley is provided with two wheel grooves, and each pulley is provided with a connection channel communicating the two wheel grooves. It has the following characteristics: both ends of the two main strings are provided with joints, one main string corresponds to one pulley, the middle of each main string is folded in half to form a "U" - shaped structure, the folded part of each main string is wound in the connection channel of the corresponding pulley, and at the same time, the two strands formed by folding each main string are respectively wound in the two wheel grooves of the corresponding pulley. The joints of the two main strings are docked one by one to form a closed ring structure, and the connection parts of the joints of the two main strings are both located between the two pulleys.

[0007] In the above - mentioned split main string structure for a compound bow, further comprising two connection rings, a connection ring is provided at the connection part of the joints of the two main strings, and the two joints where the two main strings are connected are both sleeved on the same connection ring.

[0008] In the above - mentioned split main string structure for a compound bow, the connection ring is a columnar structure, and a winding groove is provided along the circumferential direction in the middle of the connection ring. Sleeve rings are provided on the two joints where the two main strings are connected, and the sleeve rings are both sleeved in the winding groove of the corresponding connection ring and extend in opposite directions.

[0009] In the above - mentioned split main string structure for a compound bow, protective sleeves are provided on the outer sides of the connection parts of the joints of the two main strings.

[0010] In the above - mentioned split main string structure for a compound bow, the protective sleeve is a heat - shrinkable tube.

[0011] In the above - mentioned split main string structure for a compound bow, the connection channel of the pulley is a through - hole arranged along the axial direction of the pulley, and the orifices at both ends of the through - hole are respectively communicated with the two wheel grooves on the corresponding pulley.

[0012] The above-mentioned split main string structure of a compound bow, wherein the connection channel of the pulley is a groove, and both ends of the groove communicate with the two wheel grooves on the corresponding pulley.

[0013] The above-mentioned split main string structure of a compound bow, wherein a string pressing assembly is provided on each pulley, and the string pressing assembly is arranged at the connection channel of the corresponding pulley and presses or releases the folded part of the main string in the corresponding connection channel.

[0014] The above-mentioned split main string structure of a compound bow, wherein the string pressing assembly includes a pressing screw, an adjusting hole communicating with the connection channel is opened on the pulley, the pressing screw is threadedly installed in the adjusting hole and one end extends into the connection channel, and one end of the pressing screw extending into the connection channel presses or releases the corresponding folded part of the main string.

[0015] The above-mentioned split main string structure of a compound bow, wherein the string pressing assembly further includes a pressing ball, the pressing ball is arranged in the adjusting hole and one side of the pressing ball extends into the corresponding connection channel, and one end of the pressing screw abuts against the pressing ball.

[0016] The positive effects of the above technical solutions are:

[0017] For the above-mentioned split main string structure of a compound bow, by providing two main strings corresponding to two pulleys respectively, forming a "U" - shaped structure after folding the middle parts of the two main strings, and winding the folded part of each main string around the connection channel on the corresponding pulley for connecting the two wheel grooves. Moreover, the two strands of the main string formed by folding are respectively wound in the two wheel grooves of the corresponding pulley and the end joints extend out and are connected to the end joints of the other main string, so that the two main strings can form a closed ring structure. And when each main string is installed on the corresponding pulley, the bowstring in the two wheel grooves and the bowstring in the connection channel are of an integral structure, which can realize the follow - up of the bowstring in the other wheel groove when pulling the bowstring in one wheel groove, and also can realize the follow - up of the other main string. Thus, the adjustment of the two main strings can be realized without untying the magnetic seat, the adjustment is more convenient and fast, and the use experience is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of an embodiment of the split main string structure of a compound bow of the present invention;

[0019] Figure 2 It is a connection schematic diagram of two main strings of a preferred embodiment of the present invention.

[0020] In the drawings: 1, main string; 11, joint; 12, folded part; 111, sleeve; 2, pulley; 21, wheel groove; 22, connection channel; 3, connection ring; 31, winding groove; 4, protective sleeve; 5, string pressing assembly; 51, pressing screw; 52, adjusting hole. DETAILED DESCRIPTION OF THE INVENTION

[0021] In order to make the technical means, creative features, achieved objectives and effects realized by the present utility model easy to understand, the following embodiments are described in conjunction with the attached Figure 1 to the attached Figure 2 The technical solutions provided by the present utility model are specifically described, but the following content is not a limitation of the present utility model.

[0022] Figure 1 It is a structural diagram of an embodiment of a split main string structure of a compound bow of the present utility model; Figure 2 It is a connection schematic diagram of two main strings of a preferred embodiment of the present utility model. As Figure 1 and Figure 2 shown, the split main string structure of the compound bow provided in this embodiment includes: two main strings 1. At this time, the two main strings 1 are installed between the two pulleys 2 of the compound bow to realize the installation of the two main strings 1 on the two pulleys 2, so as to meet the normal use requirements of the compound bow. And, each pulley 2 is provided with two wheel grooves 21. At the same time, the pulley 2 is also provided with a connection channel 22 connecting the two wheel grooves 21, which provides conditions for the stable winding of the main string 1 on the pulley 2.

[0023] Specifically, joints 11 are provided at both ends of the two main strings 1, and each main string 1 corresponds to a pulley 2. At the same time, the middle part of each main string 1 is folded in half to form a "U"-shaped structure, so that each main string 1 forms two strings and one end of the two strings is connected through the folded portion 12. During installation, the folded portion 12 of each main string 1 is wound in the connecting channel 22 of the corresponding pulley 2. At the same time, the two strings formed by the folded main string 1 are respectively wound in the two wheel grooves 21 of the corresponding pulley 2, that is, the two bowstrings in the two wheel grooves 21 of each pulley 2 are connected through the bending portion in the corresponding connecting channel 22 to form an integral structure, so that when the bowstrings on both sides need to be adjusted, one bowstring can be pulled, and the other bowstring will follow, thereby adjusting the bowstrings in the two wheel grooves 21 of the pulley 2. In addition, the joints 11 of the two main strings 1 are connected one by one to form a closed ring structure. Since each main string 1 is an integral structure on the corresponding pulley 2 and can be pulled, when pulling one strand of one of the main strings 1, in addition to the other strand of the main string 1, the two strands of the other main string 1 can also move, thereby achieving rapid adjustment of the bowstring, more convenient adjustment, and better user experience. In addition, the magnetic base is tied between the two strands of one of the main strings 1, that is, the two ends of the main string 1 tied with the magnetic base are only connected to the magnetic base at the position of the magnetic base. Therefore, each main string 1 can also form a closed loop through the magnetic base alone, so as to meet the follow-up adjustment of the two strands of a single main string 1. In addition, the follow-up adjustment of the two strands of the other main string 1 can also be achieved by swinging the two sides of the magnetic base, so that the bowstrings on both sides of the magnetic base can be equal in length, thereby ensuring shooting accuracy. Furthermore, the connection parts of the joints 11 of the two main strings 1 are located between the two pulleys 2, so that the connection parts of the joints 11 of the two main strings 1 will not enter into the wheel grooves 21 of any pulley 2, which can not only avoid the influence of the connection parts on the movement stroke of the bowstring when drawing the bow, but also ensure that the bowstring will not get stuck during adjustment, and the structural design is more reasonable.

[0024] Specifically, two connecting rings 3 are provided between the two main strings. During installation, each connection of the joints 11 of the two main strings 1 is provided with a connecting ring 3, that is, each connection is provided with a connecting ring 3, so that the two joints 11 connected to the two main strings 1 at each connection are sleeved on the same connecting ring 3, and the connecting ring 3 is used as an intermediate structure for connecting the joints 11 of the two main strings 1, so that the joints 11 of the two main strings 1 can be quickly connected.

[0025] Specifically, the connecting ring 3 for connecting the joints 11 of the two main strings 1 is of a columnar structure. At this time, a winding groove 31 is formed in the middle of the connecting ring 3 along its circumferential direction, so that there are retaining edges on both sides of the winding groove 31. In addition, collar rings 111 are provided on the two joints 11 where the two main strings 1 are connected. During installation, the collar rings 111 are respectively sleeved in the winding grooves 31 of the corresponding connecting rings 3 and extend in opposite directions, that is, the connection of the joints 11 of the two main strings 1 is realized by sleeving the collar rings 111 in the winding grooves 31 of the corresponding connecting rings 3, and the connected joints 11 can be prevented from detaching, making the installation more convenient.

[0026] More specifically, protective sleeves 4 are provided on the outer sides of the joints 11 of the two main strings 1. The protection of the joints 11 is realized through the protective sleeves 4, which can not only prevent the collar rings 111 from slipping out of the winding grooves 31 on the connecting rings 3, but also achieve dust prevention and improve the protection effect of the connection. Preferably, the middle part of the protective sleeve 4 is sleeved outside the connecting ring 3, and the two ends of the protective sleeve 4 respectively extend along the two main strings 1 and are sleeved outside the two main strings 1 to completely wrap the joints 11 of the two main strings 1 and better achieve outer protection such as dust prevention.

[0027] More specifically, the protective sleeve 4 sleeved on the joint 11 is preferably a heat shrinkable tube, which is more convenient to sleeve and has a lower cost. At the same time, it also ensures that the protective sleeve 4 can be more stably located in its position after being sleeved, avoiding the problem of sliding along the bowstring, and the structural design is more reasonable.

[0028] More specifically, the connecting channel 22 for connecting the two wheel grooves 21 of the pulley 2 is a through hole arranged along the axial direction of the pulley 2. At this time, it is set that the orifices at both ends of the through hole are respectively communicated with the two wheel grooves 21 on the corresponding pulley 2. That is, when installing the bowstring, the folded part 12 of one main string 1 can pass through the corresponding through hole, and the two strands of the main string 1 formed by folding enter the corresponding wheel grooves 21 from the orifices at both ends of the through hole and are wound in the wheel grooves 21, so as to realize the installation of the main string 1 on the corresponding pulley 2. At the same time, when it is necessary to adjust the two strands of the main string 1, only one strand needs to be pulled to complete the follow-up adjustment of the other strand, and the adjustment can be realized without untying the magnetic seat, making the adjustment more convenient.

[0029] In addition, this embodiment also provides another technical solution for forming the connection channel 22 by using a groove structure, that is, the connection channel 22 on the pulley 2 for communicating the two wheel grooves 21 is a groove. At this time, the two ends of the groove are respectively communicated with the two wheel grooves 21 on the corresponding pulley 2, that is, a string-hanging part is formed at the ends of the two wheel grooves 21 through the groove structure. During use, the folded part 12 of a main string 1 can pass through the corresponding groove, and the two strands of the main string 1 formed by folding enter the corresponding wheel grooves 21 from the two ports of the groove respectively and are wound around the wheel grooves 21, so as to realize the installation of the main string 1 on the corresponding pulley 2. Similarly, since the two wheel grooves 21 and the groove are directly communicated structures, and the folded part 12 of the main string 1 and the two formed strands are also integral structures, when it is necessary to adjust the two strands of the main string 1, only by pulling one of the strands can the follow-up adjustment of the other strand be realized, and the bowstring can also be adjusted without unbinding the magnetic seat, making the adjustment more convenient.

[0030] More specifically, a string-pressing assembly 5 is also provided on each pulley 2. At this time, the string-pressing assembly 5 is arranged at the connection channel 22 of the corresponding pulley 2. At the same time, the string-pressing assembly 5 can press or loosen the folded part 12 of the main string 1 in the corresponding connection channel 22, that is, under normal use conditions, the string-pressing assembly 5 can press the folded part 12 of the main string 1 in the connection channel 22, so that the two strands of the main string 1 will not move, ensuring the stability during shooting. When it is necessary to adjust the two strands of the main string 1, the folded part 12 of the main string 1 in the connection channel 22 can be loosened by the string-pressing assembly 5, so that the folded part 12 of the main string 1 can move in the connection channel 22, thus meeting the adjustment requirements for the lengths of the two strands of the main string 1.

[0031] More specifically, the string-pressing assembly 5 for pressing or loosening the folded part 12 of the main string 1 further includes a pressing screw 51. At this time, an adjustment hole 52 communicating with the connection channel 22 is opened on the pulley 2, and the pressing screw 51 is threadedly installed in the adjustment hole 52 and one end extends into the connection channel 22. When the pressing screw 51 is installed in the adjustment hole 52, the length of its end extending into the connection channel 22 can be adjusted by screwing the pressing screw 51, and the end of the pressing screw 51 extending into the connection channel 22 presses or loosens the corresponding folded part 12 of the main string 1, that is, the corresponding folded part 12 of the main string can be pressed or loosened by screwing the pressing screw 51, ensuring the normal use of the bow and convenient adjustment.

[0032] More specifically, the string pressing assembly 5 further includes a pressing ball. At this time, the pressing ball is arranged in the adjusting hole 52 and one side of the pressing ball extends into the corresponding connecting channel 22. Moreover, one end of the pressing screw 51 abuts against the pressing ball, that is, the pressing screw 51 contacts the folded part 12 of the main string 1 through the pressing ball. Since the surface of the pressing ball is smooth, it can avoid the problem of damaging the main string 1 during the pressing process, with better protection and more reasonable structural design.

[0033] The split main string structure of the compound bow provided in this embodiment includes two main strings 1. By respectively corresponding the two main strings 1 to the two pulleys 2 of the compound bow, and the middle part of each main string 1 is folded to form a "U" - shaped structure, so that each main string 1 has a folded part 12 and two strands of strings. By winding the folded part 12 of the main string 1 into the connecting channel 22 for communicating the two pulley grooves 21 on the pulley 2, and respectively entering the two strands of strings from both ends of the connecting channel 22 into the corresponding pulley grooves 21, the two strands of strings located in the two pulley grooves 21 on the pulley 2 can form an integral body through the folded part 12, so that when one strand of string is pulled, the other strand of string can also move accordingly. In addition, the joints 11 of the two main strings 1 are connected to form a closed annular structure, so that when one main string 1 is adjusted, the other main string 1 can also be adjusted accordingly, thus realizing the rapid and accurate adjustment of the two main strings 1 without untying the magnetic seat, and improving the use experience.

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

Claims

1. A split main string structure for a compound bow, comprising two main strings. The two main strings are arranged between two pulleys of the compound bow. Moreover, each pulley is provided with two wheel grooves, and each pulley is provided with a connecting channel communicating the two wheel grooves. It is characterized in that, Including: Connectors are provided at both ends of the two main strings. One pulley corresponds to one main string. The middle of each main string is folded in half to form a "U" - shaped structure. The folded part of each main string is wound in the connection channel of the corresponding pulley. At the same time, the two strands of the string formed by folding each main string are respectively wound in the two groove channels of the corresponding pulley. The connectors of the two main strings are butt - jointed one by one to form a closed annular structure.

2. The split main string structure of the compound bow according to claim 1, characterized in that, It further includes two connecting rings. A connecting ring is provided at the connection part of the connectors of the two main strings. The two connectors where the two main strings are connected are both sleeved on the same connecting ring.

3. The split main string structure of the compound bow according to claim 2, characterized in that, The connecting ring is a columnar structure. A winding groove is provided along the circumferential direction in the middle of the connecting ring. Sleeve rings are provided on the two connectors where the two main strings are connected, and the sleeve rings are sleeved in the winding groove of the corresponding connecting ring and extend in opposite directions.

4. The split main string structure of the compound bow according to claim 2 or 3, characterized in that, Protective sleeves are provided on the outer sides of the connection parts of the connectors of the two main strings.

5. The split main string structure of the compound bow according to claim 4, characterized in that, The protective sleeve is a heat - shrinkable tube.

6. The split main string structure of the compound bow according to claim 1, wherein, The connection channel of the pulley is a through - hole arranged along the axial direction of the pulley, and the orifices at both ends of the through - hole are respectively communicated with the two groove channels on the corresponding pulley.

7. The split main string structure of the compound bow according to claim 1, characterized in that, The connection channel of the pulley is a groove, and both ends of the groove are respectively communicated with the two groove channels on the corresponding pulley.

8. The split main string structure of the compound bow according to claim 6 or 7, characterized in that A string - pressing assembly is provided on each pulley. The string - pressing assembly is arranged at the connection channel of the corresponding pulley and presses or loosens the folded part of the main string in the corresponding connection channel.

9. The split main string structure of the compound bow according to claim 8, characterized in that, The string - pressing assembly includes a pressing screw. An adjustment hole communicating with the connection channel is provided on the pulley. The pressing screw is threadedly installed in the adjustment hole and one end extends into the connection channel, and the end of the pressing screw extending into the connection channel presses or loosens the corresponding folded part of the main string.

10. The split main string structure of the compound bow according to claim 9, characterized in that, The string - pressing assembly further includes a pressing ball. The pressing ball is arranged in the adjustment hole and one side of the pressing ball extends into the corresponding connection channel, and one end of the pressing screw abuts against the pressing ball.

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