Quick disassembly and assembly type roller fixing shaft

Abstract

The utility model relates to the technical field of sports equipment parts, in particular to a quick disassembly and assembly type roller fixing shaft which comprises a shaft body and fastening pieces, the fastening pieces are symmetrically arranged at the two ends of the shaft body, each fastening piece comprises a center pipe, a ball, a push plate, a connecting rod, a protection frame and an abutting piece, the protection frames are arranged at the two ends of the shaft body, and the center pipe is connected with the center pipe. A center pipe is arranged in the protection frame, the protection frame and the center pipe are arranged in a concentric circle mode, an opening is formed in the end, away from the shaft body, of the protection frame, and the push plate is arranged on the outer side of the center pipe in a sliding mode. When the push plate completely abuts against the ball, the inner side gap of the center pipe is small to clamp the roller seat with the roller, when the push plate is close to one side of the shaft body, the roller seat is moved again, the ball part moves from the movable hole to the direction away from the center pipe, and the use stability is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of sports equipment parts and components, in particular to a quick-detachable roller fixing shaft. Background Art

[0002] Some fixed shafts of sports equipment need to be equipped with rollers, but the existing roller seats with rollers are often connected to the fixed shafts by bolts, which is inconvenient to disassemble and assemble, and it is not convenient to equip rollers of corresponding specifications according to user needs, which is inconvenient to use. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a quick-detachable roller fixing shaft.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a quick-detachable roller fixed shaft, comprising a shaft body and a fastener, the fasteners are symmetrically arranged at both ends of the shaft body, the fasteners include a center tube, a ball, a push plate, a connecting rod, a protective frame and a top dead part, the protective frames are arranged at both ends of the shaft body, a center tube is arranged in the protective frame, the protective frame and the center tube are arranged concentrically, an opening is arranged at one end of the protective frame away from the shaft body, the push plate is slidably arranged on the outer side of the center tube, a plurality of groups of movable holes are arranged on the circumference of the center tube, the balls are arranged in the movable holes, the inner opening of the movable holes is smaller than the outer opening of the movable holes, the push plate is adapted to the ball, and a connecting rod is arranged on the push plate to penetrate the protective frame and be connected to the top dead part.

[0007] In order to ensure the stability of the movement of the push plate, the utility model is improved in that the connecting rods are arranged in two groups symmetrically.

[0008] In order to stably push the push plate, the utility model is improved in that the top fixing part includes a protective cover, a worm gear, a worm, a screw and a handle, the protective cover is arranged on the shaft body, the worm and two groups of symmetrically arranged worm gears are arranged in the protective cover, one end of the screw passes through the protective cover and is connected to the worm gear, and the other end of the screw is threadedly connected to the connecting rod.

[0009] Preferably, the push plate is provided with a chamfer on one side close to the central tube.

[0010] Preferably, the protection frame is further provided with a cover plate for closing the gap between the protection frame and the central tube.

[0011] Preferably, the cover plate is snap-connected to the protection frame.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides a quick-detachable roller fixing shaft, which has the following beneficial effects:

[0014] The quick-detachable roller fixed shaft controls the feed of the connecting rod through the top fixing part. Furthermore, the connecting rod drives the push plate to move. When the push plate completely presses against the ball, the inner gap of the center tube is small and clamps the roller seat with the roller. When the push plate is close to the side of the shaft body, the roller seat is moved again, and the ball part moves from the movable hole in the direction away from the center tube, thereby ensuring its stability in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 It is a partial schematic diagram of the structure of the utility model;

[0017] Figure 3 The utility model structure Figure 2 A partial enlarged schematic diagram;

[0018] Figure 4 This is a schematic diagram of the assembly of the handle, worm and worm wheel of the utility model structure.

[0019] In the figure: 1. shaft; 2. center tube; 3. ball; 4. push plate; 5. connecting rod; 6. protection frame; 7. protective cover; 8. worm gear; 9. worm; 10. screw; 11. handle; 12. cover plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4, a quick-detachable roller fixed shaft, comprising an axis body 1 and a fastener, the fasteners are symmetrically arranged at both ends of the axis body 1, the fasteners include a center tube 2, a ball 3, a push plate 4, a connecting rod 5, a protective frame 6 and a top dead part, the protective frame 6 is arranged at both ends of the axis body 1, the center tube 2 is arranged in the protective frame 6, the protective frame 6 is arranged concentrically with the center tube 2, the protective frame 6 is provided with an opening at one end away from the axis body 1, the push plate 4 is slidably arranged on the outer side of the center tube 2, a plurality of groups of movable holes are arranged on the circumference of the center tube 2, the ball 3 is arranged in the movable hole, the inner opening of the movable hole is smaller than the outer opening of the movable hole, the push plate 4 is adapted to the ball 3, and a connecting rod 5 is provided on the push plate 4 to penetrate the protective frame 6 and is connected to the top dead part.

[0022] In actual use, before assembling the roller seat with rollers, the push plate 4 is moved close to the shaft body 1, the roller seat is inserted into the center tube 2, and then the connecting rod 5 is pushed through the top fixing, so that the connecting rod 5 drives the push plate 4 to resist the ball 3. The push plate 4 is provided with a chamfered surface close to the center tube 2, and the ball 3 extends into the inner side of the movable hole to stably clamp the roller seat. The connecting rod 5 is provided with two groups of symmetrical arrangements to ensure the stability of the movement of the push plate 4.

[0023] In actual use, if the cylinder is used as the top fixing part, the shaft body 1 cannot rotate 360 ​​degrees, otherwise the air supply pipe will be entangled and the equipment will be unusable. In order to solve the above problem, the top fixing part includes a protective cover 7, a worm wheel 8, a worm 9, a screw 10 and a handle 11. The protective cover 7 is arranged on the shaft body 1. The worm 9 and two groups of symmetrically arranged worm wheels 8 are arranged in the protective cover 7. One end of the screw 10 passes through the protective cover 7 and is connected to the worm wheel 8. The other end of the screw 10 is threadedly connected to the connecting rod 5. The handle 11 drives the worm 9 in the protective cover 7 to rotate, and the worm wheel 8 drives the screw 10 to rotate. The screw 10 controls the horizontal displacement of the two groups of connecting rods 5, which is easy to use.

[0024] In actual use, in order to prevent foreign matter from entering the protection frame 6 , in this embodiment, the protection frame 6 is further provided with a cover plate 12 for closing the gap between the protection frame 6 and the central tube 2 , and the cover plate 12 is snap-connected with the protection frame 6 .

[0025] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0026] Reference to "embodiment" herein 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 term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0027] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A quick-detachable roller fixing shaft, comprising a shaft body (1) and a fastener, characterized in that: The fasteners are symmetrically arranged at both ends of the shaft body (1), and the fasteners include a center tube (2), a ball (3), a push plate (4), a connecting rod (5), a protective frame (6) and a top fixing part. The protective frame (6) is arranged at both ends of the shaft body (1), and the center tube (2) is arranged inside the protective frame (6). The protective frame (6) and the center tube (2) are arranged concentrically. An opening is arranged at one end of the protective frame (6) away from the shaft body (1). The push plate (4) is slidably arranged on the outer side of the center tube (2). A plurality of groups of movable holes are arranged on the circumference of the center tube (2). The ball (3) is arranged in the movable hole. The inner opening of the movable hole is smaller than the outer opening of the movable hole. The push plate (4) is adapted to the ball (3). A connecting rod (5) is arranged on the push plate (4) to pass through the protective frame (6) and is connected to the top fixing part.

2. The quick-detachable roller fixing shaft according to claim 1, characterized in that: The connecting rods (5) are arranged in two groups symmetrically.

3. The quick-detachable roller fixing shaft according to claim 2, characterized in that: The top fixing part comprises a protective cover (7), a worm wheel (8), a worm (9), a screw (10) and a handle (11); the protective cover (7) is arranged on the shaft body (1); the worm (9) and two groups of symmetrically arranged worm wheels (8) are arranged in the protective cover (7); one end of the screw (10) passes through the protective cover (7) and is connected to the worm wheel (8); the other end of the screw (10) is threadedly connected to the connecting rod (5).

4. The quick-detachable roller fixing shaft according to claim 3, characterized in that: The push plate (4) is provided with a chamfer on one side close to the central tube (2).

5. The quick-detachable roller fixing shaft according to claim 4, characterized in that: The protection frame (6) is also provided with a cover plate (12) for closing the gap between the protection frame (6) and the central tube (2).

6. The quick-detachable roller fixing shaft according to claim 5, characterized in that: The cover plate (12) is snap-fitted and connected to the protection frame (6).

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