Anti-lost and easy-to-disassemble bolt and counterweight seat

Abstract

The utility model discloses an anti-lost and easy-to-disassemble bolt and a counterweight seat, which belongs to the technical field of connection devices for sports equipment, and includes a mother bolt and a child bolt; the front end of the mother bolt is provided with a stud, the root of the stud is coaxially provided with a limit step, the rear end of the limit step is coaxially provided with a screwing portion, and the width of the screwing portion is at least twice the outer diameter of the stud; the rear end face of the mother bolt is provided with a blind hole, and the blind hole is provided with an internal thread; the front end of the child bolt is provided with a bolt head matched with the internal thread; the child bolt is provided with a threading hole along the central axis; a rope is provided in the threading hole, and a limit hoop is provided at the inner end of the rope, and the width of the limit hoop is greater than the aperture of the front end of the threading hole and smaller than the aperture of the blind hole. A counterweight seat is also disclosed. The design has strong connection stability, and can take into account the tool-free disassembly and assembly convenience required for sports equipment and the function of preventing bolts from being lost.

Description

Technical Field

[0001] The utility model relates to the technical field of connecting devices for sports equipment, in particular to an easily disassembled equipment connecting device. Background Art

[0002] In order to achieve a stable support effect, sports equipment is usually designed as a pipe rack structure, such as horizontal bars and parallel bars. However, sports equipment with fixed structures often take up a large space, which is not only inconvenient for equipment transfer or transportation before placement, but also not conducive to centralized storage during non-training time. Therefore, in order to reduce the space occupancy of the equipment during non-training time, some sports equipment will use bolts through threaded structures at the movable connection parts to achieve connection. However, in order to protect athletes and prevent accidental bumps, metal mechanical assembly tools such as screwdrivers and wrenches are usually not placed at sports events. This means that each assembly and disassembly of sports equipment requires the collection, use and return of tools, which is very inconvenient and adds a lot of irrelevant activities before and after the athletes' exercise. For this reason, connection components that can be easily assembled or disassembled by users without the assistance of professional tools have become an actual need at sports events. Through such connection components, the purpose of disconnecting or reassembling the structures can be easily and quickly achieved, achieving the effect of convenient use, such as Figure 1 As shown, in the Chinese utility model patent with the announcement number CN221106911U, "a rod counterweight for sports equipment" is disclosed, and the retaining wall is provided with a spring pin 351, and the spring pin 351 can be used with the pin hole to realize the vertical positioning of the rod. However, the inventor believes that the connection structure of the pin hole has a tolerance, so there will be a small gap when it is matched, and this gap may affect the stability of the far end of the rod body, which is particularly significant when it is adapted to a long rod. If the spring pin 351 is simply replaced with a hand-tightened bolt, it is impossible to take into account the problem of convenient twisting and the problem of bolt falling off and losing. The missing bolt not only affects the use of the equipment, but the bolt lost at the sports scene is very likely to cause physical harm to the athletes in the gap of the floor mat at the sports scene, bringing safety hazards to the event site. Utility Model Content

[0003] The pin-hole matching connection structure in the prior art will affect the stability of the distal end of the rod body, while the hand-tightened bolts cannot take into account the defects of convenient tightening and bolt falling off and loss.

[0004] In view of at least one of the above technical problems, the utility model provides an anti-lost easy-to-dismantle bolt and a counterweight seat, which achieves the purpose of preventing the easy-to-dismantle bolt from losing through a rope, achieving the convenience of non-instrument operation and the purpose of preventing the bolt from losing. The specific technical solution is as follows:

[0005] An anti-lost and easy-to-disassemble bolt comprises a mother bolt and a sub-bolt;

[0006] The front end of the female bolt is provided with a stud, the root of the stud is coaxially provided with a limit step, the rear end of the limit step is coaxially provided with a screwing portion, and the width of the screwing portion is at least twice the outer diameter of the stud; the rear end surface of the female bolt is provided with a blind hole, and the blind hole is provided with an internal thread;

[0007] The front end of the sub-bolt is provided with a bolt head matched with the internal thread; the sub-bolt is provided with a threading through hole along the central axis;

[0008] A rope is arranged in the threading through hole, and a limiting hoop is arranged at the inner end of the rope. The width of the limiting hoop is larger than the aperture of the front end of the threading through hole and smaller than the aperture of the blind hole.

[0009] In some embodiments of the present disclosure, two mutually parallel planes are disposed opposite to each other on the side surfaces of the limiting step portion.

[0010] In some embodiments of the present disclosure, the screwing portion is a disc-shaped structure.

[0011] In some embodiments of the present disclosure, an anti-slip structure is provided on the outer side of the screwing portion, and the anti-slip structure includes at least one of anti-slip grooves, anti-slip grooves or anti-slip protrusions.

[0012] In some embodiments of the present disclosure, the blind hole is coaxially arranged with the stud, and the threading through hole is coaxially arranged with the blind hole.

[0013] In some embodiments of the present disclosure, the length dimension of the limiting hoop head is a, the length dimension of the bolt head is b, and the depth dimension of the blind hole is c, wherein a+b<c.

[0014] In some embodiments of the present disclosure, the rope is slidably matched with the threading through hole.

[0015] In some embodiments of the present disclosure, a washer hoop is provided at the rear end of the rope, and the width of the washer hoop is smaller than the aperture of the threading hole.

[0016] In some embodiments of the present disclosure, the threading through hole is a tapered hole, and its front end diameter is smaller than its rear end diameter.

[0017] A counterweight seat, comprising the anti-loss and easy-to-disassemble bolts and a counterweight block as described above; a baffle is vertically provided on the upper surface of the counterweight block, the baffle is provided with a bolt through hole, a sleeve is hinged on one side of the baffle, the sleeve is provided with a threaded hole matching the bolt through hole, the sleeve is vertically fixed to the counterweight block through the threaded hole and the stud; the rear end of the rope is connected to the counterweight block.

[0018] Compared with the prior art, the above-mentioned anti-lost and easy-to-disassemble bolts and counterweight seat have the following beneficial effects:

[0019] Before use, pass the rope through the threading hole so that the limiting hoop head is in contact with the front end surface of the bolt head, and tighten the bolt head into the blind hole to complete the assembly of the twist-on bolt. When in use, the user can operate the screwing part with fingers to screw the stud into the corresponding threaded hole to achieve the required fixation of the sports equipment, and connect and fix the rear end of the rope to the sports equipment itself to achieve the anti-loss function of the easy-to-disassemble bolt; the connection has strong stability, and can take into account the convenient operation of tool-free disassembly and assembly required by sports equipment and the function of preventing the bolt from being lost.

[0020] By using the anti-lost and easy-to-dismantle bolts on the counterweight seat, the sleeve of the counterweight seat can be made more stable and not easy to shake, which is particularly effective when adapting to a long pole. At the same time, the easy-to-dismantle bolts will not be lost, which is convenient for maintaining the integrity of the sports equipment and reducing the safety risks at the sports site.

[0021] The integrated design of the female bolt can ensure that the stud obtains the same angular velocity when the screwing part is turned. By designing the width of the screwing part to be at least twice the outer diameter of the stud, twisting the female bolt is more convenient, efficient and labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of a connecting assembly for a rod-mounted counterweight;

[0023] Figure 2 It is a three-dimensional schematic diagram of the first perspective of the embodiment 2 of the anti-lost and easy-to-remove bolt in the structure of the utility model;

[0024] Figure 3 It is a three-dimensional schematic diagram of the second perspective of the embodiment 2 of the anti-lost and easy-to-remove bolt in the structure of the utility model;

[0025] Figure 4 It is a three-dimensional exploded schematic diagram of the third perspective of the embodiment 2 of the anti-lost and easy-to-remove bolt in the structure of the utility model;

[0026] Figure 5 It is a front view schematic diagram of Embodiment 2 of the anti-lost and easy-to-remove bolt in the structure of the utility model;

[0027] Figure 6 for Figure 5 Schematic diagram of the cross section of AA;

[0028] Explanation of the numbers in the figure: 1. mother bolt; 11. stud; 12. limit step; 13. screwing part; 131. anti-slip structure; 14. blind hole; 2. sub-bolt; 21. bolt head; 22. threading hole; 3. rope; 31. limit hoop; 32. washer hoop; 351. spring pin. DETAILED DESCRIPTION

[0029] In order to better understand the purpose, structure and function of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below.

[0030] It should be noted that, unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "provided with" and any variations thereof in this application are open-ended and are intended to cover non-exclusive inclusions.

[0031] The serial numbers assigned to the components herein are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" mentioned in this disclosure, unless otherwise specified, includes both direct and indirect "connections". In the description of this application, it should be understood that the directions or positional relationships indicated by the directional terms "front" and "rear" are based on the attached Figure 5 The orientation or positional relationship shown is only for the convenience of description, and does not indicate or imply that the device or unit referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0032] As shown in the attached figure Figures 2 to 6 As shown, a bolt that can prevent loss and can be easily disassembled is designed, comprising a mother bolt 1 and a sub-bolt 2;

[0033] The front end of the female bolt 1 is provided with a stud 11, which is an externally threaded stud. The stud 11 is used to cooperate with the threaded hole on the sports equipment. The root of the stud 11 is coaxially provided with a limit step 12, which is used to ensure the screwing depth of the stud 11. There is no need to maintain visual observation when screwing in. After the front end surface of the limit step 12 contacts the threaded hole on the sports equipment, an intuitive tactile feedback of resistance can be obtained, avoiding complicated operations. The rear end of the limit step 12 is coaxially provided with a screwing portion 13 for the operator to directly hold and screw in. The width of the screwing portion 13 is at least twice the outer diameter of the stud 11. The female bolt 1 is designed in an integrated manner. When the screwing portion 13 is screwed, it can be ensured that the stud 11 obtains the same angular velocity. By designing the width of the screwing portion 13 to be at least twice the outer diameter of the stud 11, twisting the female bolt 1 is more convenient, efficient and labor-saving; the rear end face of the female bolt 1 is provided with a blind hole 14, and the blind hole 14 is provided with an internal thread;

[0034] The front end of the sub-bolt 2 is provided with a bolt head 21 matched with the internal thread; the sub-bolt 2 is provided with a threading through hole 22 along the central axis;

[0035] A rope 3 is arranged in the threading hole 22 , and a limiting hoop 31 is arranged at the inner end of the rope 3 . The width of the limiting hoop 31 is larger than the aperture of the front end of the threading hole 22 and smaller than the aperture of the blind hole 14 .

[0036] Before use, the rope 3 is passed through the threading hole 22 so that the limiting hoop 31 is in contact with the front end surface of the bolt head 21, and the bolt head 21 is tightly screwed into the blind hole 14 to complete the pre-assembly of the torque-proof bolt. In the subsequent use process, there is no need to remove the mother bolt 1 and the child bolt 2, until the anti-loss torque-proof bolt needs to be removed from the sports equipment, and the above-mentioned installation steps can be reversed; when in use, the user holds the screwing part 13 with fingers and screws the stud 11 into the corresponding threaded hole to achieve the required fixation of the sports equipment, and the rear end of the rope 3 is connected and fixed to the sports equipment itself to achieve the anti-loss function of the torque-proof bolt; the connection is stable, and can take into account the tool-free disassembly and assembly convenience required by the sports equipment and the function of preventing the bolt from being lost.

[0037] A counterweight seat is also designed, including the anti-loss and easy-to-dismantle bolts and counterweight block as described above, and the counterweight block can be a metal block type or a box type; a baffle is vertically provided on the upper surface of the counterweight block, and a bolt through hole is provided on the baffle, and a sleeve that can be used to insert a rod is hinged on one side of the baffle, and a threaded hole is provided on the sleeve to match the bolt through hole, and the sleeve is vertically fixed to the counterweight block through the threaded hole and the stud 11; the rear end of the rope is connected to the counterweight block and can be put into use. By using the anti-loss and easy-to-dismantle bolts on the counterweight seat, the sleeve of the counterweight seat can be made stable and not easy to shake, which is particularly effective when adapting to a long rod. At the same time, the easy-to-dismantle bolt will not be lost, which is convenient for maintaining the integrity of the sports equipment while reducing the safety risks at the sports site.

[0038] In the above implementation mode, three embodiments are listed to implement the above technical solution. The reference to "embodiment" in this article means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. In the absence of conflict, the various embodiments in the present application can be combined with each other.

[0039] Embodiment 1 discloses an anti-lost and easy-to-disassemble bolt, comprising a mother bolt 1 and a sub-bolt 2;

[0040] The front end of the female bolt 1 is provided with a stud 11, which is an externally threaded stud. The stud 11 is used to cooperate with the threaded hole on the sports equipment. The root of the stud 11 is coaxially provided with a limit step 12. The limit step 12 is used to ensure the screwing depth of the stud 11. There is no need to maintain visual observation when screwing in. After the front end surface of the limit step 12 contacts the threaded hole on the sports equipment, intuitive resistance tactile feedback can be obtained to avoid complicated operations. The rear end of the limit step 12 is coaxially provided with a screwing portion 13 for the operator to directly hold and screw in. The width of the screwing portion 13 is at least twice the outer diameter of the stud 11. The female bolt 1 is designed to be integrated and can be screwed in. When the screwing portion 13 is screwed, the stud 11 can be guaranteed to obtain the same angular velocity. By designing the width of the screwing portion 13 to be at least twice the outer diameter of the stud 11, which is twice in this embodiment, twisting the mother bolt 1 is more convenient, efficient and labor-saving; a blind hole 14 is provided on the rear end face of the mother bolt 1, and the blind hole 14 is provided with an internal thread; a bolt head 21 is provided at the front end of the sub-bolt 2 for matching with the internal thread; the sub-bolt 2 is provided with a threading hole 22 along the central axis; a rope 3 is provided in the threading hole 22, and a limiting hoop 31 is provided at the inner end of the rope 3, and the width of the limiting hoop 31 is greater than the aperture of the front end of the threading hole 22 and smaller than the aperture of the blind hole 14.

[0041] The screwing part 13 is a screw handle type structure, which includes at least two screw handles evenly distributed circumferentially, and this embodiment has three screw handles; the outer side surface of the screwing part 13 is provided with an anti-slip structure 131, and the anti-slip structure 131 is a leather cover mounted on the screwing part 13. The length dimension of the limiting hoop 31 is a, the length dimension of the bolt head 21 is b, and the depth dimension of the blind hole 14 is c, wherein a+b>c. When in use, after tightening the bolt head 21, the front end face of the bolt head 21 and the bottom face of the blind hole 14 will press and fix the limiting hoop 31; in this embodiment, the rope 3 is a multi-strand nylon wire, which can be directly tied to the corresponding position of the sports equipment when in use to achieve the purpose of preventing loss; the threading hole 22 is a conical hole, and its front end aperture is smaller than its rear end aperture. The flared design reduces the friction coefficient between the rope 3 and the threading hole 22, thereby extending the service life of the rope 3 and reducing the resistance of the stud 11 to screw in. The outer contour of the sub-bolt 2 is a structure similar to an external hexagonal bolt.

[0042] Before use, the rope 3 is passed through the threading hole 22 so that the limiting hoop 31 is in contact with the front end surface of the bolt head 21, and the bolt head 21 is tightly screwed into the blind hole 14 to complete the pre-assembly of the torque-proof bolt. In the subsequent use process, there is no need to remove the mother bolt 1 and the child bolt 2, until the anti-loss torque-proof bolt needs to be removed from the sports equipment, and the above-mentioned installation steps can be reversed; when in use, the user holds the screwing part 13 with fingers and screws the stud 11 into the corresponding threaded hole to achieve the required fixation of the sports equipment, and the rear end of the rope 3 is connected and fixed to the sports equipment itself to achieve the anti-loss function of the torque-proof bolt; the connection is stable, and can take into account the tool-free disassembly and assembly convenience required by the sports equipment and the function of preventing the bolt from being lost.

[0043] A counterweight seat is also designed, including the anti-loss and easy-to-dismantle bolts and counterweight block as described above, and the counterweight block can be a metal block type or a box type; a baffle is vertically provided on the upper surface of the counterweight block, and a bolt through hole is provided on the baffle, and a sleeve that can be used to insert a rod is hinged on one side of the baffle, and a threaded hole is provided on the sleeve to match the bolt through hole, and the sleeve is vertically fixed to the counterweight block through the threaded hole and the stud 11; the rear end of the rope is connected to the counterweight block and can be put into use. By using the anti-loss and easy-to-dismantle bolts on the counterweight seat, the sleeve of the counterweight seat can be made stable and not easy to shake, which is particularly effective when adapting to a long rod. At the same time, the easy-to-dismantle bolt will not be lost, which is convenient for maintaining the integrity of the sports equipment while reducing the safety risks at the sports site.

[0044] like Figures 2 to 6As shown, the second embodiment discloses an anti-loss and easy-to-disassemble bolt. The difference between this embodiment and the first embodiment is that the width dimension of the screwing portion 13 is at least twice the outer diameter dimension of the stud 11. The female bolt 1 is designed in an integrated manner. When the screwing portion 13 is screwed, the stud 11 can obtain the same angular velocity. The width dimension of the screwing portion 13 is designed to be at least twice the outer diameter dimension of the stud 11, which is three times the outer diameter dimension of the present embodiment. In this embodiment, the outer diameter dimension of the stud 11 is 8mm, and the width dimension of the screwing portion 13 is 24mm, which makes it more convenient, efficient and labor-saving to twist the female bolt 1; the screwing portion 13 is a disc-shaped structure, which can be equipped with chamfers or fillets, and the cross-section can be circular or elliptical; the outer side surface of the screwing portion 13 is provided with an anti-slip structure 131, and the anti-slip structure 131 includes at least one of anti-slip patterns, anti-slip grooves or anti-slip protrusions. In the example, the anti-slip structure 131 is an anti-slip groove arranged in an alternating manner; the blind hole 14 is coaxially arranged with the stud 11, and the threading hole 22 is coaxially arranged with the blind hole 14, which has stronger integrity; the length dimension of the limiting hoop 31 is a, the length dimension of the bolt head 21 is b, and the depth dimension of the blind hole 14 is c, wherein a+b<c. In this embodiment, the rope 3 is a thin metal wire rope, which can be a steel wire rope; the rope 3 is slidably matched with the threading hole 22, so that the torsion of the mother bolt 1 and the child bolt 2 is freer, and there is no need to consider the problem of the rope 3 twisting too much; the rear end of the rope 3 is provided with a washer hoop 32, and the width of the washer hoop 32 is smaller than the aperture of the threading hole 22. When in use, the rear end of the rope 3 can be directly connected to the sports equipment through the washer hoop 32 and the screw, which is very convenient to use.

[0045] Embodiment three discloses an anti-loss and easy-to-disassemble bolt. The difference between this embodiment and embodiment two is that two parallel planes are relatively provided on the side surfaces of the limit step 12. When the threaded hole and the stud 11 are adhered or rusted, the two parallel planes can be clamped by a wrench to complete the screwing and disassembly of the female bolt 1, which is very convenient. In this embodiment, the anti-slip structure 131 is an alternately arranged knurled pattern; the length dimension of the limit hoop 31 is a, the length dimension of the bolt head 21 is b, and the depth dimension of the blind hole 14 is c, wherein a+b=c; the rear end portion of the rope 3 is a coil structure, which can be put on a specific position of sports equipment.

[0046] It can be understood that the above description is only for illustrating the specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the present application should be included in the disclosure scope of the present application.

Claims

1. An anti-lost and easy-to-disassemble bolt, characterized in that: It comprises a mother bolt (1) and a daughter bolt (2); The front end of the female bolt (1) is provided with a stud (11), the root of the stud (11) is coaxially provided with a limit step portion (12), the rear end of the limit step portion (12) is coaxially provided with a screwing portion (13), the width of the screwing portion (13) is at least twice the outer diameter of the stud (11); the rear end surface of the female bolt (1) is provided with a blind hole (14), and the blind hole (14) is provided with an internal thread; The front end of the sub-bolt (2) is provided with a bolt head (21) matched with the internal thread; the sub-bolt (2) is provided with a threading through hole (22) along the central axis; A rope (3) is arranged in the threading hole (22), and a limiting hoop (31) is arranged at the inner end of the rope (3). The width of the limiting hoop (31) is larger than the aperture of the front end of the threading hole (22) and smaller than the aperture of the blind hole (14).

2. The anti-loss and easy-to-disassemble bolt according to claim 1, characterized in that: Two mutually parallel planes are arranged opposite to each other on the side surfaces of the position limiting step portion (12).

3. The anti-loss and easy-to-disassemble bolt according to claim 1, characterized in that: The screwing portion (13) is a disc-like structure.

4. The anti-loss and easy-to-disassemble bolt according to claim 3, characterized in that: An anti-skid structure (131) is provided on the outer side surface of the screwing portion (13), and the anti-skid structure (131) comprises at least one of anti-skid patterns, anti-skid grooves or anti-skid protrusions.

5. The anti-loss and easy-to-disassemble bolt according to claim 1, characterized in that: The blind hole (14) is coaxially arranged with the stud (11), and the threading through hole (22) is coaxially arranged with the blind hole (14).

6. The anti-loss and easy-to-disassemble bolt according to claim 1, characterized in that: The length dimension of the limiting hoop (31) is a, the length dimension of the bolt head (21) is b, and the depth dimension of the blind hole (14) is c, wherein a+b<c.

7. The anti-loss and easy-to-disassemble bolt according to claim 1, characterized in that: The rope (3) is slidably matched with the threading through hole (22).

8. The anti-loss and easy-to-disassemble bolt according to claim 7, characterized in that: A washer hoop (32) is provided at the rear end of the rope (3), and the width of the washer hoop (32) is smaller than the diameter of the threading hole (22).

9. The anti-loss and easy-to-disassemble bolt according to claim 7, characterized in that: The threading through hole (22) is a tapered hole, the diameter of the front end of which is smaller than the diameter of the rear end.

10. A counterweight seat, characterized in that: It comprises the anti-loss and easy-to-disassemble bolt and counterweight block as described in any one of claims 1 to 9; a baffle is vertically provided on the upper surface of the counterweight block, the baffle is provided with a bolt through hole, a sleeve is hinged on one side of the baffle, the sleeve is provided with a threaded hole matching the bolt through hole, and the sleeve is vertically fixed to the counterweight block by cooperating with the stud (11) through the threaded hole; the rear end of the rope (3) is connected to the counterweight block.

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