Anti-loosening automobile fastener

Abstract

The utility model discloses an anti-loosening automobile fastener which comprises a U-shaped screw rod, a locking plate is installed at the locking end of the U-shaped screw rod, an installation cavity is formed in the locking plate, and a linkage fast locking assembly is installed in the installation cavity. The U-shaped fastener for the automobile plate spring has the advantages that the locking plate is installed at the locking end of the U-shaped screw rod, and the linkage quick-locking assembly composed of the hexagonal rotating head, the threaded sleeve, the via hole, the chain wheel and the chain is installed in the installation cavity in the locking plate, so that when the U-shaped fastener for the automobile plate spring is used, only one-time rotating and screwing are conducted, and the operation is convenient. Synchronous locking and fixing of the two ends of the U-shaped screw rod can be achieved only by rotating the U-shaped screw rod, the mounting and fixing efficiency of the fastener is higher, meanwhile, under the action of the chain and the chain wheel, the two screw sleeves are connected into a whole, reverse resistance can be provided by means of the other screw sleeve when one screw sleeve tends to loosen, the screw sleeves are not prone to loosen in the using process, and the service life of the U-shaped screw rod is prolonged. And the fastening quality of the U-shaped fastener is effectively ensured.

Description

Technical Field

[0001] This utility model relates to the field of automotive fastener technology, specifically to an anti-loosening automotive fastener. Background Technology

[0002] Automotive fasteners play a crucial role in automobile manufacturing, ensuring the stability, safety, and durability of various components and systems. There are many types of fasteners, and the type used varies depending on the application. U-bolt-type fasteners are often used when securing automotive leaf springs to the axle.

[0003] The existing U-shaped fasteners for installing automotive leaf springs mainly consist of a U-shaped screw and hexagonal threaded sleeves installed at the screw heads at both ends of the U-shaped screw. In use, the U-shaped screw is first passed through the automotive leaf spring, and the screw heads at both ends of the U-shaped screw are passed through the reserved mounting holes on the axle. Then, the two hexagonal threaded sleeves are screwed onto the screw heads on the U-shaped screw, and a reliable connection and limit between the automotive leaf spring and the axle can be achieved under the action of the U-shaped screw.

[0004] While existing U-shaped fasteners for automotive leaf spring installation can connect and fix the leaf springs to the axle, the installation method of tightening hexagonal threaded sleeves one by one makes the tightening process of the U-shaped fasteners cumbersome and not conducive to efficient installation and fixation. Furthermore, after tightening, the hexagonal threaded sleeves are prone to loosening due to vibrations during vehicle operation, resulting in poor fastening quality. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The technical problem to be solved by this utility model is to provide an anti-loosening automotive fastener that enables quick connection and fixation between automotive leaf springs and axles, in light of the current state of the technology.

[0007] (II) Technical Solution

[0008] This utility model is achieved through the following technical solution: This utility model proposes an anti-loosening automotive fastener, including a U-shaped screw, a locking plate installed on the locking end of the U-shaped screw, an installation cavity opened in the locking plate, and a linkage quick-lock assembly installed in the installation cavity. The linkage quick-lock assembly includes a hexagonal swivel head, a screw sleeve, a sprocket, a chain, and a through hole. There are two screw sleeves, which are symmetrically installed on both sides of the installation cavity. Each screw sleeve is connected to a hexagonal swivel head at its top end. The through hole is provided in the middle of the top end of the hexagonal swivel head. The sprocket is installed in the middle of the outer wall of the screw sleeve. The chain is sleeved between the sprockets on the outside of the two screw sleeves.

[0009] Furthermore, the threaded sleeve penetrates the locking plate and is rotatably connected to the locking plate.

[0010] By adopting the above technical solution and the rotational fitting installation method, the screw sleeve can be easily rotated and adjusted relative to the locking plate, so as to avoid the locking plate from obstructing the rotation of the screw sleeve when screwing the screw sleeve onto the U-shaped screw.

[0011] Furthermore, the sprocket is welded to the threaded sleeve, and the sprocket engages with the chain.

[0012] By adopting the above technical solution, the welding fixing method makes the installation of the sprocket on the outer wall of the screw sleeve more secure. Under the action of the chain, the rotation of the other screw sleeve can be realized simultaneously when one screw sleeve rotates, so that the two screw sleeves can be locked synchronously with just one tightening action.

[0013] Furthermore, the hexagonal swivel is welded to the top of the screw sleeve, and a gap is reserved between the bottom of the hexagonal swivel and the upper surface of the locking plate.

[0014] By adopting the above technical solution and the design of the gap, the hexagonal swivel head can be easily rotated under the action of external bolt tightening equipment.

[0015] Furthermore, the screw sleeve has a screw hole inside, and the diameter of the through hole is larger than the diameter of the screw hole inside the screw sleeve.

[0016] By adopting the above technical solution, the design of the inner threaded hole of the screw sleeve can ensure convenient screwing of the screw sleeve and the U-shaped screw, and the through hole can facilitate the passage of the locking end of the U-shaped screw.

[0017] Furthermore, the bottom end of the screw sleeve is flush with the bottom end of the locking plate, and the screw sleeve is threadedly connected to the locking end of the U-shaped screw.

[0018] By adopting the above technical solution, the bottom end of the locking plate and the bottom end of the screw sleeve make synchronous contact with the locking part on the car, which can improve the structural strength of the U-shaped fastener under the action of the locking plate.

[0019] Furthermore, the mounting cavity is a square cavity, and the width of the mounting cavity is greater than the diameter of the sprocket.

[0020] By adopting the above technical solution, the mounting cavity can ensure that the screw sleeve, sprocket and chain have sufficient installation space.

[0021] (III) Beneficial Effects

[0022] Compared with the prior art, this utility model has the following advantages:

[0023] To address the shortcomings of existing U-shaped fasteners for automotive leaf spring installation, which, while capable of connecting and securing the leaf spring to the axle, involve cumbersome tightening processes by individually screwing on hexagonal threaded inserts, hindering efficient fastener installation, and are prone to loosening due to vehicle vibrations after tightening, resulting in poor fastener quality, this invention addresses these issues by installing a locking plate at the locking end of the U-shaped screw, and then installing a hexagonal threaded insert within the mounting cavity of the locking plate. The interlocking quick-lock assembly, consisting of an angled turner, threaded sleeve, through hole, sprocket, and chain, enables the U-shaped fastener for automotive leaf springs to achieve synchronous locking and fixing of both ends of the U-shaped screw with just one rotation and tightening. This makes the fastener installation and fixing efficiency higher. At the same time, under the action of the chain and sprocket, the two threaded sleeves are connected as one unit. If one threaded sleeve tends to loosen, the other threaded sleeve can provide reverse resistance, preventing the threaded sleeves from easily loosening during use and effectively ensuring the fastening quality of the U-shaped fastener. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of an anti-loosening automotive fastener described in this utility model;

[0025] Figure 2 This is a top sectional view of the locking plate in an anti-loosening automotive fastener as described in this utility model;

[0026] Figure 3 This is a schematic diagram of the connection structure of the hexagonal swivel, threaded sleeve, and sprocket in an anti-loosening automotive fastener as described in this utility model.

[0027] The annotations in the attached figures are explained as follows:

[0028] 1. Locking plate; 2. U-shaped screw; 3. Interlocking quick-lock assembly; 301. Hexagonal swivel head; 302. Screw sleeve; 303. Sprocket; 304. Chain; 305. Through hole; 4. Mounting cavity. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0030] like Figures 1-3As shown, an anti-loosening automotive fastener in this embodiment includes a U-shaped screw 2. A locking plate 1 is installed on the locking end of the U-shaped screw 2. An installation cavity 4 is formed in the locking plate 1. A quick-locking assembly 3 is installed in the installation cavity 4. The quick-locking assembly 3 includes a hexagonal swivel head 301, a screw sleeve 302, a sprocket 303, a chain 304, and a through hole 305. There are two screw sleeves 302, which are symmetrically installed on both sides of the installation cavity 4. A hexagonal swivel head 301 is connected to the top of each screw sleeve 302. A through hole 305 is provided in the middle of the top of the hexagonal swivel head 301. The outer wall of the screw sleeve 302... A sprocket 303 is installed in the middle, and a chain 304 is sleeved between the sprockets 303 outside the two threaded sleeves 302. Under the action of the chain 304, the rotation of the other threaded sleeve 302 can be realized simultaneously when one threaded sleeve 302 rotates. Thus, the two threaded sleeves 302 can be locked synchronously with only one tightening action. The bottom end of the threaded sleeve 302 is flush with the bottom end of the locking plate 1. The threaded sleeve 302 is threadedly connected to the locking end of the U-shaped screw 2. The bottom end of the locking plate 1 and the bottom end of the threaded sleeve 302 are synchronously in contact with the locking part on the car. Under the action of the locking plate 1, the structural strength of the U-shaped fastener can be improved.

[0031] like Figures 1-3 As shown, in this embodiment, the threaded sleeve 302 penetrates the locking plate 1 and is rotatably connected to the locking plate 1. This rotatable installation method ensures that the threaded sleeve 302 can be easily rotated and adjusted relative to the locking plate 1, so that when the threaded sleeve 302 is screwed onto the U-shaped screw 2, the locking plate 1 does not obstruct the rotation of the threaded sleeve 302. The sprocket 303 is welded to the threaded sleeve 302 and engages with the chain 304. The welding fixation method makes the installation of the sprocket 303 on the outer wall of the threaded sleeve 302 more secure. The hexagonal swivel head 301 is welded to the top of the threaded sleeve 302, and a gap is reserved between the bottom of the hexagonal swivel head 301 and the upper surface of the locking plate 1. The gap design ensures that the hexagonal swivel head 301 can be easily rotated under the action of external bolt tightening equipment.

[0032] like Figures 1-3 As shown, in this embodiment, the screw sleeve 302 has a screw hole inside, and the diameter of the through hole 305 is larger than the diameter of the screw hole inside the screw sleeve 302. The design of the screw hole inside the screw sleeve 302 can ensure that the screw sleeve 302 and the U-shaped screw 2 can be easily screwed together. The through hole 305 can allow the locking end of the U-shaped screw 2 to pass through easily. The mounting cavity 4 is a square cavity, and the width of the mounting cavity 4 is larger than the wheel diameter of the sprocket 303. The mounting cavity 4 can ensure that the screw sleeve 302, the sprocket 303 and the chain 304 have sufficient installation space.

[0033] The specific implementation process of this embodiment is as follows: When it is necessary to connect the car leaf spring to the axle, firstly, the mounting block on the axle and the car leaf spring is attached, and the locking end of the U-shaped screw 2 is passed through the locking part on the car leaf spring and the axle. Then, the locking plate 1 is placed on the locking end of the U-shaped screw 2, and the screw sleeve 302 is made to contact the locking end of the U-shaped screw 2. Then, only one of the hexagonal swivel heads 301 needs to be rotated by the external tightening device. During the rotation of the hexagonal swivel head 301, the two screw sleeves 302 can be synchronously tightened by the chain 304 and the sprocket 303, which makes the locking efficiency of the U-shaped fastener higher. At the same time, after locking, the two screw sleeves 302 are connected into one piece by the action of the chain 304 and the sprocket 303. When one screw sleeve 302 tends to loosen, the other screw sleeve 302 can provide reverse resistance, so that the screw sleeve 302 will not easily loosen during use, effectively ensuring the fastening quality of the U-shaped fastener.

[0034] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A type of anti-loosening automotive fastener, characterized in that: The device includes a U-shaped screw (2), a locking plate (1) is installed on the locking end of the U-shaped screw (2), an installation cavity (4) is opened in the locking plate (1), and a linkage quick lock assembly (3) is installed in the installation cavity (4). The linkage quick lock assembly (3) includes a hexagonal swivel head (301), a screw sleeve (302), a sprocket (303), a chain (304), and a through hole (305). There are two screw sleeves (302), which are symmetrically installed on both sides of the installation cavity (4). Each screw sleeve (302) is connected to a hexagonal swivel head (301) at its top. The through hole (305) is provided in the middle of the top of the hexagonal swivel head (301). The sprocket (303) is installed in the middle of the outer wall of the screw sleeve (302). The chain (304) is sleeved between the sprockets (303) outside the two screw sleeves (302).

2. The anti-loosening automotive fastener according to claim 1, characterized in that: The threaded sleeve (302) passes through the locking plate (1), and the threaded sleeve (302) is rotatably connected to the locking plate (1).

3. The anti-loosening automotive fastener according to claim 1, characterized in that: The sprocket (303) is welded to the threaded sleeve (302), and the sprocket (303) engages with the chain (304).

4. The anti-loosening automotive fastener according to claim 1, characterized in that: The hexagonal swivel (301) is welded to the top of the threaded sleeve (302), and a gap is reserved between the bottom of the hexagonal swivel (301) and the upper surface of the locking plate (1).

5. The anti-loosening automotive fastener according to claim 4, characterized in that: The threaded sleeve (302) has a threaded hole inside, and the diameter of the through hole (305) is larger than the diameter of the threaded hole inside the threaded sleeve (302).

6. The anti-loosening automotive fastener according to claim 1, characterized in that: The bottom end of the threaded sleeve (302) is flush with the bottom end of the locking plate (1), and the threaded sleeve (302) is threadedly connected to the locking end of the U-shaped screw (2).

7. The anti-loosening automotive fastener according to claim 1, characterized in that: The mounting cavity (4) is a square cavity, and the width of the mounting cavity (4) is greater than the diameter of the sprocket (303).

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