Flat head bow string structure

Abstract

The utility model provides a kind of flat head bowstring structure, belong to sports equipment technical field.A kind of flat head bowstring structure includes bowstring;The utility model is by the end of bowstring and the end portion of bowstring guide slot of chord wheel cooperation is set into the flat head portion of flat head structure, the cross section of flat head portion is rectangle or racetrack type, by flat head portion forms the plane of adhesion, so that after the flat head portion of bowstring is installed in the bowstring guide slot of chord wheel, can be through the plane of adhesion closely bowstring guide slot bottom, to prevent the problem that the circumferential rotation of flat head portion occurs in bowstring guide slot, avoid the deflection of bowstring, to prevent the deflection of peephole installed on bowstring, ensure the accuracy of sighting, in addition, it can also avoid the problem that it needs to be adjusted after using for a period of time, realize free adjustment, improve the convenience of use.

Description

Technical Field

[0001] This utility model relates to the field of sports equipment technology, specifically to a flat-head bowstring structure. Background Technology

[0002] As a type of sports equipment, bows and arrows launch arrows or steel balls by pulling a bowstring. Therefore, improving the stability of bowstring installation and use is key to ensuring bow and arrow accuracy.

[0003] Currently, the bowstrings available on the market, especially compound bows, typically have a structure similar to the eccentric wheel assembly of a compound bow disclosed in patent CN200920302440.7. This assembly includes two main string wheels, two auxiliary string wheels, one main string, and two auxiliary strings. In this case, the main string wheels have a main string wheel groove on their side and a main string guide groove on their back. The main string wheels have a main string hanging post at the main string guide groove. In addition, the auxiliary string wheels have an auxiliary string wheel groove on their outer side, which has a straight section and a curved section. The auxiliary string wheels also have a tension adjustment positioning hole and a through slot for fixing screws. A limiting groove for the auxiliary string hanging post is provided at the center hole. The auxiliary string wheels are fitted onto the main string wheel shaft of the main string wheels through their center hole and are fixedly connected by fixing screws. During installation, the two ends of the main string are connected to the main string hanger of the main string wheel after passing through the main string wheel grooves of the two main string wheels. The two auxiliary strings are arranged symmetrically. One end of the auxiliary string is connected to the central auxiliary string hanger of one main string wheel, and the other end passes through the auxiliary string guide groove and the auxiliary string transition positioning block of the other main string wheel before being connected to the side auxiliary string hanger. When the main string is pulled, the main string wheel and the auxiliary string wheel can be deflected. At the same time, the auxiliary string is pulled to accumulate power. After the main string is released, the main string drives the arrow or steel ball to be launched, thus meeting the shooting requirements. While the above structure already meets the shooting requirements of a bow and arrow, to improve shooting accuracy, a sight is usually installed on the main string for aiming. The sight is an approximately circular structure, and the cross-section of the part where the main string mates with the main string guide groove is circular. This causes the main string to easily rotate circumferentially within the main string guide groove when the operator pulls the main string and the pulling force is tilted. This causes the sight to deflect relative to the sight in the vertical plane, affecting the aiming effect. Adjusting the sight direction requires loosening the entire main string and then reinstalling it. The adjustment process is cumbersome, difficult, requires a lot of experience, and is not conducive to use. Summary of the Invention

[0004] To address the aforementioned problems in existing technologies, this invention aims to provide a flat-headed bowstring structure. Both ends of the bowstring are flattened, resulting in rectangular or racetrack-shaped cross-sections at both ends. This provides both ends with contact surfaces, ensuring that when the bowstring is installed in the bowstring guide groove, the contact surfaces align with the bottom of the groove, achieving planar contact. This effectively prevents circumferential rotation of the bowstring within the guide groove, eliminating rotation under permissible tension. This also prevents deflection of the sight hole mounted on the bowstring, ensuring accurate aiming and eliminating the need for adjustments later, making it more convenient to use.

[0005] The specific technical solution is as follows: A flat-headed bowstring structure includes a bowstring with its two ends wound around the bowstring guide grooves of two string wheels. The bowstring has a viewing hole installed on it. The bowstring has the following features: both ends of the bowstring are flat-headed structures to form flat heads, so that the flat heads have a planar contact surface. During installation, the contact surface of the flat heads at both ends of the bowstring is arranged to fit against the bottom of the corresponding bowstring guide groove.

[0006] In the aforementioned flat-head bowstring structure, the middle section of the bowstring is a double-string structure. After the middle section of the bowstring is separated, it forms two strands of string, and a magnetic base is installed between the two strands of string.

[0007] In the aforementioned flat-head bowstring structure, the middle section of the bowstring is a single string, and the arrow's fletching is secured to the middle section of the bowstring.

[0008] In the aforementioned flat-head bowstring structure, the bowstring includes two sub-strings arranged side by side. The two ends of the two sub-strings are wrapped with a first string guard rope. The two sub-strings are arranged side by side along the width of the bowstring guide groove. When the middle section of the bowstring is a double-string structure, the middle section of the two sub-strings is separated and used as two separate strings. When the middle section of the bowstring is a single-string structure, the middle section of the two sub-strings is wrapped with a second string guard rope to form a single string.

[0009] In the aforementioned flat-head bowstring structure, each substring includes several string threads and a substring guard rope. The string threads are twisted into a single string in a braided manner, and the substring guard rope is wrapped around the twisted string.

[0010] The above-mentioned flat-head bowstring structure includes a bowstring comprising several strands and an outer protective cord. The strands are twisted together in a braided shape and then wrapped around the outer protective cord. The middle section of the bowstring divides the strands into two equal strands, which are then connected to the two sides of the magnet base respectively.

[0011] In the aforementioned flat-head bowstring structure, the bottom of the bowstring guide groove of the string wheel is a contact plane that mates with the mating plane. When the flat head of the bowstring is wound around the bowstring guide groove, the contact plane and the mating plane abut against each other and then fit together.

[0012] The positive effects of the above technical solution are: The aforementioned flat-head bowstring structure features a flat head at the end of the bowstring wound within the bowstring guide groove of the string wheel. The flat head has a rectangular or racetrack-shaped cross-section, providing two opposing contact surfaces. This ensures that when the flat head is installed in the bowstring guide groove, the contact surfaces are in close contact with the bottom of the groove, preventing circumferential rotation of the flat head within the groove. This effectively avoids bowstring deflection and the deflection of the sight hole mounted on the bowstring, improving aiming accuracy. Furthermore, without bowstring deflection, it eliminates the need for subsequent bowstring adjustments, meeting the requirement of adjustment-free operation and making it more convenient to use. Attached Figure Description

[0013] Figure 1 This is a structural diagram of an embodiment of the flat-head bowstring structure of this utility model; Figure 2 This is a structural diagram of a bowstring with a flat-headed bowstring structure according to this utility model; Figure 3 This is a structural diagram of a flat-head bowstring structure according to the present invention, when the bowstring includes two substrings.

[0014] In the attached diagram: 1. Bowstring; 11. Flat head; 111. Fitting plane; 112. Substring; 113. First guard rope; 114. Second guard rope; 2. String wheel; 21. Bowstring guide groove; 3. Peephole. Detailed Implementation

[0015] To make the technical means, creative features, objectives, and effects of this utility model easier to understand, the following embodiments are provided in conjunction with the appendix. Figure 1 To be continued Figure 3 The technical solution provided by this utility model is described in detail, but the following content is not intended to limit this utility model.

[0016] Figure 1 This is a structural diagram of an embodiment of the flat-head bowstring structure of this utility model; Figure 2 This is a structural diagram of a flat-headed bowstring structure according to this utility model. Figure 1 and Figure 2As shown, the flat-head bowstring structure provided in this embodiment includes a bowstring 1. At this time, both ends of the bowstring 1 are respectively wound around the bowstring guide grooves 21 of the two string wheels 2. That is, both ends of the bow and arrow handle are provided with string wheels 2, and each string wheel 2 has a bowstring guide groove 21 on its surface. By winding both ends of the bowstring 1 around the two bowstring guide grooves 21, the bowstring 1 is installed between the two string wheels 2, meeting normal shooting requirements. In addition, a peephole 3 is installed on the bowstring 1, allowing the user to aim through the peephole 3 when pulling the bowstring 1, improving shooting accuracy. It is worth noting that since installing a peephole 3 on the bowstring 1 to improve shooting accuracy is a common technical method in the industry, the specific installation method of the peephole 3 on the bowstring 1 will not be described in detail here.

[0017] Specifically, both ends of the bowstring 1 are flattened to form flattened heads 11. Preferably, the cross-section of the flattened head 11 is rectangular or racetrack-shaped, so that the flattened head 11 has at least two oppositely arranged and planar contact surfaces 111. During installation, the contact surfaces 111 of the flattened heads 11 at both ends of the bowstring 1 are attached to the bottom of the corresponding bowstring guide groove 21, achieving planar contact between the bowstring 1 and the bottom of the bowstring guide groove 21 of the string wheel 2. This effectively prevents the bowstring 1 from rotating circumferentially within the bowstring guide groove 21 when it is pulled, thus preventing the deflection of the sight hole 3 subsequently installed on the bowstring 1, ensuring the aiming effect, and eliminating the need to adjust the bowstring 1 after later use. This makes it more convenient to use and suitable for users at all stages. It is worth noting that the flattened head 11 of the bowstring 1 proposed in this embodiment has contact surfaces 111. At the same time, it should also be considered that other irregularly shaped structural surfaces with approximately planar surfaces on the flattened head 11 are also within the protection scope of this embodiment.

[0018] Figure 3 This is a structural diagram of a flat-head bowstring structure according to this utility model, when the bowstring includes two sub-strings. For example... Figure 2 and Figure 3 As shown, the middle section of bowstring 1 is set to a double-string structure. When the middle section of bowstring 1 is separated, it forms two strands of string. A magnetic base is installed between the two strands of string. The two strands of string provide connection support to both sides of the magnetic base, so that the magnetic base is subjected to uniform force. This ensures the direction of force on the magnetic base and provides the conditions for ensuring the shooting direction after placing steel balls or arrows on the magnetic base. This meets the usage requirements of a composite bow that can fire both steel balls and arrows, i.e., it is used as a composite bow.

[0019] In addition, this embodiment also provides another bowstring 1 structure, that is, the middle section of the bowstring 1 is set as a single string structure. In this case, the middle section of the bowstring 1 is a single string. At this time, the arrow fletching is stuck on the middle section of the bowstring 1, which meets the pure archery requirements, that is, it can be used as a single archery bow.

[0020] More specifically, the bowstring 1 includes two sub-strings 112. During manufacturing, the two sub-strings 112 are arranged side by side, with a first protective string rope 113 wrapped around both ends of each sub-string 112. At this point, the two sub-strings 112 are arranged side by side along the width of the bowstring guide groove 21, so that the ends of the two sub-strings 112, after being wrapped with the first protective string rope 113, form a racetrack-shaped cross-section, thus achieving the purpose of having flat ends for the bowstring 1. Furthermore, when the middle section of the bowstring 1 is a double-string structure, the middle section of the two sub-strings 112 is not wrapped with the first protective string rope 113; that is, the middle section of the two sub-strings 112 is separated and used as two separate strings, requiring no additional structural arrangement, making the processing of the bowstring 1 more convenient. When the middle section of the bowstring 1 is a single-string structure, the middle sections of the two sub-strings 112 are wrapped with a second string guard 114. That is, the middle sections of the two sub-strings 112 are wrapped together by the second string guard 114 to form a single string, meeting the requirement of being used only with the arrow's fletching. It is worth noting that when the middle section of the bowstring 1 is a single-string structure, the middle sections of the two sub-strings 112, after being wrapped with the second string guard 114, form a circular cross-section structure, compatible with the fletching of all commercially available arrows, resulting in a more rational structural design. Furthermore, the two sub-strings 112 located near the first string wheel 2 and outside the bowstring guide groove 21 are separated and connected to both sides of the peephole 3, thus meeting the installation requirements of the peephole 3.

[0021] More specifically, each substring 112 includes several string threads and a substring protection rope. The string threads are twisted into a single strand, and the substring protection rope is wrapped around the twisted strand. The substring protection rope forms a rope-like overall structure by connecting the several twisted string threads together, thus realizing the production of the substring 112.

[0022] In addition, this embodiment also provides another combination style of bowstring 1. In this case, bowstring 1 includes several strands and an outer protective cord. The strands are twisted into a single strand and then wrapped with the outer protective cord. That is, bowstring 1 can be directly processed from strands and outer protective cord, with fewer processing steps, further simplifying the process and reducing manufacturing costs. It is worth noting that when bowstring 1 is directly processed from several strands and outer protective cord, the middle section of bowstring 1 is divided into two strands and connected to both sides of the magnetic base to form a structure for mounting the magnetic base on bowstring 1, meeting the magnetic base installation requirements. Similarly, the strands of bowstring 1 near the first string wheel 2 and located outside the bowstring guide groove 21 are divided into two strands and connected to both sides of the viewing hole 3 to meet the installation requirements of the viewing hole 3.

[0023] More specifically, the bottom of the bowstring guide groove 21 of the string wheel 2 is a contact plane that mates with the mating plane 111. That is, the bottom of the bowstring guide groove 21 is also a plane. This allows the flat head 11 of the bowstring 1 to be wound around the bowstring guide groove 21, and the contact plane and the mating plane 111 to abut against each other and fit together, thus preventing relative circumferential rotation. This also prevents the viewing hole 3 from deflecting after a period of use.

[0024] The flat-head bowstring structure provided in this embodiment includes a bowstring 1. By setting the ends of the bowstring 1 that mate with the bowstring guide groove 21 of the string wheel 2 as flat-head structures, the flat-head 11 has a rectangular or racetrack-shaped cross-section. The flat-head 11 forms at least two opposing contact surfaces 111, so that after the flat-head 11 of the bowstring 1 is installed in the bowstring guide groove 21 of the string wheel 2, it can be tightly attached to the bottom of the bowstring guide groove 21 by the contact surfaces 111, thereby preventing the flat-head 11 from rotating circumferentially in the bowstring guide groove 21, avoiding the deflection of the bowstring 1, and thus preventing the deflection of the sight hole 3 installed on the bowstring 1, ensuring the accuracy of aiming. In addition, it can also avoid the problem of needing to adjust the bowstring 1 after a period of use, achieving adjustment-free operation and improving the convenience of use.

[0025] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flat-headed bowstring structure, comprising a bowstring, the two ends of which are respectively wound around bowstring guide grooves of two string wheels, and an inspection hole is installed on the bowstring, characterized in that, Both ends of the bowstring are flat-headed structures to form flat heads, so that the flat heads have planar contact surfaces. During installation, the contact surfaces of the flat heads at both ends of the bowstring are attached to the bottom of the corresponding bowstring guide groove.

2. The flat-head bowstring structure according to claim 1, characterized in that, The middle section of the bowstring has a double-string structure. After the middle section of the bowstring is separated, it forms two strands of string, and a magnetic base is installed between the two strands of string.

3. The flat-head bowstring structure according to claim 1, characterized in that, The middle section of the bowstring is a single-string structure, and the arrow's fletching is secured to the middle section of the bowstring.

4. The flat-head bowstring structure according to claim 2 or 3, characterized in that, The bowstring includes two substrings arranged side by side. The two ends of the two substrings are wrapped with a first string guard rope. The two substrings are arranged side by side along the width of the bowstring guide groove. When the middle section of the bowstring is a double-string structure, the middle sections of the two substrings are separated and used as two separate strings. When the middle section of the bowstring is a single-string structure, the middle sections of the two substrings are wrapped with a second string guard rope to form a single string.

5. The flat-head bowstring structure according to claim 4, characterized in that, Each substring comprises several string threads and a substring guard rope. The string threads are twisted into a single strand, and the substring guard rope is wrapped around the twisted strand.

6. The flat-head bowstring structure according to claim 2 or 3, characterized in that, The bowstring includes several strands and an outer protective cord. The strands are twisted together in a braid and then wrapped around the outer protective cord. The middle section of the bowstring divides the strands into two equal strands, which are then connected to the two sides of the magnet base respectively.

7. The flat-head bowstring structure according to claim 6, characterized in that, The bottom of the bowstring guide groove of the string wheel is a contact plane that mates with the mating plane. When the flat head of the bowstring is wound around the bowstring guide groove, the contact plane and the mating plane abut against each other and then fit together.

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