Fastener with retaining function

Abstract

The utility model relates to the technical field of fasteners, and discloses a fastener with a retaining function, which comprises a bolt body and a nut, the bolt body comprises a screw rod and a screw head, one end of the screw rod is fixedly connected with one side of the screw head, one side of the screw rod close to the screw head is connected with a plurality of racks, the length of the plurality of racks is larger than that of the screw rod, and the nut is fixedly connected with the screw rod. The side, close to the screw head, of the nut is fixedly connected with a partition plate, and the outer wall of the partition plate is connected with a plurality of movable boxes. According to the fastener with the retaining function, when a user uses a bolt body and a nut to fix a certain object, after the nut moves along a screw rod and is matched with a screw head to complete fixation from the two sides of the object, a plurality of racks can be fixed to a plurality of limiting assemblies on a plurality of movable boxes correspondingly, and the locking effect is achieved; and therefore, the nut can be limited from the two sides of the nut, and the situation that the nut slides down along the screw and then retreats and falls off can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a fastener with an anti-retreat function. Background Technique

[0002] Fasteners, also often referred to as standard parts, are extremely widespread mechanical components in the mechanical field. They are mainly used to achieve the fastening connection between two or more parts (or components), making them a whole or fixing them in a specific position. Fasteners are characterized by diverse varieties and specifications, different functions and uses, and high standardization, serialization, and generalization characteristics, which enable them to be widely used in various industrial productions and daily repairs. Common fasteners are bolts and nuts.

[0003] Currently, when bolts and nuts are used to fix an object, they are very likely to become loose due to the vibration of the object, and then lose the limiting effect, which is rather inconvenient. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a fastener with an anti-retreat function. When a user uses a bolt body and a nut to fix an object, when the nut moves along the screw rod and cooperates with the screw head to complete the fixation from both sides of the object, several racks can be respectively fixed to several limiting components on several movable boxes, and then the nut can be limited from both sides of the nut, so as to prevent the nut from sliding along the screw rod and falling backward.

[0005] The utility model provides the following technical solution: A fastener with an anti-retreat function includes a bolt body and a nut connected to the surface of the bolt body. The bolt body includes a screw rod and a screw head. One end of the screw rod is fixedly connected to one side of the screw head. Several racks are connected to the side of the screw rod close to the screw head. The lengths of several racks are all greater than the length of the screw rod. The nut is sleeved and threadedly connected to the outer wall of the screw rod. A partition is fixedly connected to the side of the nut close to the screw head. Several movable boxes are connected to the outer wall of the partition. Limiting components are connected to one side of several movable boxes. The ends of several racks far from the screw head are respectively connected to several limiting components.

[0006] Further, limiting cavities are respectively and penetratingly opened on the upper surfaces of the movable boxes. The ends of several racks far from the screw head respectively penetrate several limiting cavities and are slidably connected to the inner walls of several limiting cavities.

[0007] Further, spring cavities are respectively opened on the sides of several limiting cavities far from the partition. Several limiting components are respectively located in several spring cavities.

[0008] Further, the limiting component includes a push plate, a clamping plate and a compression spring. One end of the compression spring is fixedly connected to the inner wall of the spring cavity, the other end of the compression spring is fixedly connected to one side of the push plate, the other side of the push plate is fixedly connected to one side of the clamping plate, the other side of the clamping plate penetrates through the spring cavity, and a plurality of ratchet teeth are arranged on the side of the clamping plate away from the push plate. A plurality of ratchet teeth are also arranged on the side of the rack close to the screw rod, and the ratchet teeth on the clamping plate and the rack are matched with each other.

[0009] Further, a pull rod is fixedly connected to the side of the push plate away from the clamping plate, and the other end of the pull rod penetrates through the compression spring and the spring cavity.

[0010] Further, a sliding groove is formed in the outer side wall of the partition plate, a sliding block is fixedly connected to the side of the movable box close to the screw rod, and the outer wall of the sliding block is slidably connected to the inner wall of the sliding groove.

[0011] Further, a plurality of storage openings are formed in the outer wall of the screw rod, and a plurality of racks are respectively located in the plurality of storage openings.

[0012] Compared with the prior art, the present utility model has the following beneficial effects:

[0013] For this kind of fastener with a function of preventing backward movement, by arranging a plurality of racks on the screw head of the bolt body, and arranging a partition plate, a movable box and a limiting component on the side of the nut close to the screw head, when the user uses the bolt body and the nut to fix an object, the nut can move along the screw rod, and after the screw head and the nut cooperate to complete the fixation from both sides of the object, the plurality of racks can be respectively fixed to the plurality of limiting components on the plurality of movable boxes, so as to limit the nut from both sides of the nut, thereby preventing the nut from sliding along the screw rod and falling backward. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall appearance of the present utility model;

[0015] Figure 2 is a detailed connection diagram of components such as the bolt body, the nut and the partition plate of the present utility model;

[0016] Figure 3 is an exploded view of components such as the rack, the movable box and the limiting component of the present utility model.

[0017] In the figure: 1. Bolt body; 2. Nut; 3. Partition plate; 4. Rack; 5. Movable box; 6. Pull rod; 7. Push plate; 8. Clamping plate; 9. Compression spring; 10. Sliding block; 11. Screw rod; 12. Screw head; 101. Storage opening; 301. Sliding groove; 501. Limiting cavity; 502. Spring cavity. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0019] Please refer to Figures 1 - 3 , a fastener with an anti-back-off function, including a bolt body 1 and a nut 2 connected to the surface of the bolt body 1. The bolt body 1 includes a screw rod 11 and a screw head 12. One end of the screw rod 11 is fixedly connected to one side of the screw head 12. A plurality of racks 4 are connected to the side of the screw rod 11 close to the screw head 12. The lengths of the plurality of racks 4 are all greater than the length of the screw rod 11. The nut 2 is sleeved and threadedly connected to the outer wall of the screw rod 11. A partition 3 is fixedly connected to the side of the nut 2 close to the screw head 12. A plurality of movable boxes 5 are connected to the outer wall of the partition 3. A limiting component is connected to one side of each of the plurality of movable boxes 5. The ends of the plurality of racks 4 away from the screw head 12 are respectively connected to the plurality of limiting components.

[0020] As Figures 1 to 3 shown, for the fastener with an anti-back-off function in the present utility model, when the user uses the bolt body 1 and the nut 2 to fix an object, first, the nut 2 is sleeved outside the plurality of racks 4, and then the nut 2 is normally moved along the screw rod 11 by threading. After that, the object is fixed from both sides of the object in cooperation with the screw head 12. Then, the plurality of racks 4 are turned outwards from the side of the nut 2 away from the screw head 12, so that the back surface of the rack 4 abuts against the upper surface of the nut 2. Then, the turned-down racks 4 are respectively fixed to the plurality of limiting components on the plurality of movable boxes 5, so as to limit the nut 2 from both sides of the nut 2, thereby preventing the nut 2 from sliding down along the screw rod 11 and causing the situation of backing off and falling.

[0021] Please mainly refer to Figures 1 - 3 , a limiting cavity 501 is respectively opened through the upper surface of the movable box 5. The ends of the plurality of racks 4 away from the screw head 12 respectively penetrate through the plurality of limiting cavities 501 and are slidably connected to the inner walls of the plurality of limiting cavities 501. By providing the limiting cavity 501, first, the end of the rack 4 away from the screw head 12 can be received; second, the connection limit between the rack 4 and the limiting component can be increased, and the stability can be increased.

[0022] Please mainly refer to Figures 1 - 3 , a spring cavity 502 is respectively opened on the side of the plurality of limiting cavities 501 away from the partition 3. The plurality of limiting components are respectively located in the plurality of spring cavities 502. By providing the spring cavity 502, a receiving and supporting can be given to the limiting component, so that it can cooperate with the rack 4 to complete the limiting while also making a receiving.

[0023] Please mainly refer to Figures 1 - 3, the limiting component includes a push plate 7, a clamping plate 8 and a compression spring 9. One end of the compression spring 9 is fixedly connected to the inner wall of the spring cavity 502, and the other end of the compression spring 9 is fixedly connected to one side of the push plate 7. The other side of the push plate 7 is fixedly connected to one side of the clamping plate 8. The other side of the clamping plate 8 penetrates through the spring cavity 502. A number of ratchet teeth are provided on the side of the clamping plate 8 away from the push plate 7. A number of ratchet teeth are also provided on the side of the rack 4 close to the screw 11, and the ratchet teeth on the clamping plate 8 and the rack 4 match each other.

[0024] More specifically, when the rack 4 is inserted from above the limiting cavity 501, the ratchet teeth on the surface of the rack 4 will abut against the ratchet teeth on the clamping plate 8, and at this time, the two ratchet teeth abut against each other with inclined surfaces. Therefore, the rack 4 can pass through normally. At the same time, the clamping plate 8 will push the push plate 7 towards the direction of the spring cavity 502. After the push plate 7 is pushed, the compression spring 9 can be pushed and compressed. When the ratchet teeth of the rack 4 are misaligned with the ratchet teeth of the clamping plate 8, the compression spring 9 will push the push plate 7 and the clamping plate 8 towards the direction of the limiting cavity 501 again until the rack 4 cannot be pulled from the other side of the limiting cavity 501. At this time, the nut 2 can be always pulled towards the direction of the screw head 12 by the rack 4, so as to prevent the nut 2 from loosening from the end of the screw 11 away from the screw head 12.

[0025] When the rack 4 has completed the pulling of the nut 2, because the other sides of the ratchet teeth on the rack 4 and the clamping plate 8 are straight surfaces, the rack 4 cannot exit from the inside of the limiting cavity 501, so as to always maintain a pulling force on the nut 2 towards the direction of the screw head 12, thereby preventing the nut 2 from detaching.

[0026] Please mainly refer to Figures 1 - 3 , a pull rod 6 is fixedly connected to the side of the push plate 7 away from the clamping plate 8. The other end of the pull rod 6 penetrates through the compression spring 9 and the spring cavity 502. By providing the pull rod 6, when it is necessary to adjust the tightness of the rack 4 or remove the rack 4, only by pulling the pull rod 6 can the clamping plate 8 be forcibly separated from the rack 4, and then the rack 4 can be operated to be adjusted inside the limiting cavity 501.

[0027] Please mainly refer to Figures 1 - 3 , a chute 301 is provided on the outer side wall of the outer ring of the partition plate 3. A slider 10 is fixedly connected to the side of the movable box 5 close to the screw 11. The outer wall of the slider 10 is slidably connected to the inner wall of the chute 301. Since the partition plate 3 rotates on the surface of the screw 11 following the nut 2, the stopped position is uncertain. The rack 4 is stationary relative to the screw head 12 and the screw 11. At this time, by providing the chute 301 and the slider 10, the movable box 5 can be rotated to a position aligned and matched with the rack 4, which is convenient for subsequent limiting.

[0028] Please mainly refer to Figures 1 - 3, a plurality of receiving openings 101 are formed on the outer wall of the screw rod 11, and a plurality of racks 4 are respectively located in the plurality of receiving openings 101. By providing the receiving openings 101, firstly, the racks 4 can be received, so that they do not occupy external space; secondly, the racks 4 can be prevented from being located outside the screw rod 11, thereby affecting the movement of the nut 2 along the threads on the surface of the screw rod 11; finally, the situation that the racks 4 are broken when the nut 2 moves on the surface of the screw rod 11 can be reduced.

[0029] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A fastener with a locking function, comprising a bolt body (1) and a nut (2) connected to the surface of the bolt body (1), characterized in that: The bolt body (1) comprises a screw rod (11) and a screw head (12), one end of the screw rod (11) is fixedly connected to one side of the screw head (12), a side of the screw rod (11) close to the screw head (12) is connected to a plurality of racks (4), the lengths of the plurality of racks (4) are all greater than the length of the screw rod (11), a nut (2) is sleeved and threadedly connected to the outer wall of the screw rod (11), a side of the nut (2) close to the screw head (12) is fixedly connected to a partition (3), the outer wall of the partition (3) is connected to a plurality of movable boxes (5), one side of the plurality of movable boxes (5) is connected to a limiting assembly, and ends of the plurality of racks (4) away from the screw head (12) are respectively connected to the plurality of limiting assemblies; The upper surface of the movable box (5) is penetrated by a limit cavity (501), and the ends of the plurality of racks (4) away from the screw head (12) respectively penetrate the plurality of limit cavities (501) and are slidably connected to the inner walls of the plurality of limit cavities (501); A spring cavity (502) is provided on a side of the plurality of limit cavities (501) away from the partition plate (3), and the plurality of limit assemblies are respectively located in the plurality of spring cavities (502); The limit assembly comprises a push plate (7), a clamping plate (8) and an extrusion spring (9), one end of the extrusion spring (9) is fixedly connected to the inner wall of the spring cavity (502), the other end of the extrusion spring (9) is fixedly connected to one side of the push plate (7), the other side of the push plate (7) is fixedly connected to one side of the clamping plate (8), the other side of the clamping plate (8) passes through the spring cavity (502), a side of the clamping plate (8) away from the push plate (7) is provided with a plurality of ratchet teeth, a side of the rack (4) close to the screw rod (11) is also provided with a plurality of ratchet teeth, and the ratchet teeth on the clamping plate (8) and the rack (4) match each other; A pull rod (6) is fixedly connected to one side of the push plate (7) away from the clamping plate (8), and the other end of the pull rod (6) passes through the extrusion spring (9) and the spring cavity (502); The outer ring side wall of the partition plate (3) is provided with a slide groove (301), and a slider (10) is fixedly connected to the side of the movable box (5) close to the screw rod (11), and the outer wall of the slider (10) is slidably connected to the inner wall of the slide groove (301); The outer wall of the screw rod (11) is provided with a plurality of receiving openings (101), and the plurality of racks (4) are respectively located in the plurality of receiving openings (101).

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