Lock bolt assembly

Abstract

The utility model discloses a lock bolt assembly which comprises a bolt body, the bolt body comprises a bolt end and a bolt rod, a fixing groove is formed in the side, facing the bolt end, of the middle of the tail of the bolt rod, and two sets of positioning grooves which are oppositely distributed and communicated with the fixing groove are formed in the bolt rod. The length direction of the positioning groove is the same as the length direction of the rod portion of the bolt, an adjusting plate is arranged in the fixing groove, a limiting plate is hinged to the adjusting plate and used for protruding out of the positioning groove, a positioning plate is arranged between the limiting plate and the adjusting plate, the lower portion of the fixing groove is provided with threads and connected with an abutting piece in a threaded mode, and the abutting piece abuts against the positioning plate. Through the arrangement of the adjusting plate, the limiting plate and the abutting piece, the nut is limited again at the positioning groove of the bolt rod part, the stability of nut connection is guaranteed, and the anti-loosening performance of bolt and nut connection is achieved; and on the other hand, the nut is prevented from loosening due to the arrangement of the reverse thread part.

Description

Technical Field

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

[0002] A Chinese utility model patent with application number 202420275877.0 discloses an anti-loosening bolt, which adds a secondary screw at the tail of the bolt to prevent the connecting nut from loosening. However, in the above structure, the secondary screw structure is located at the tail of the bolt, and the nut is connected to the middle of the bolt. The secondary screw has a limited effect on preventing the nut from loosening, so there is room for improvement. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of the aforementioned background technology by providing an anti-loosening bolt assembly with good anti-loosening effect.

[0004] To achieve the above objectives, this utility model provides an anti-loosening bolt assembly, which adopts the following technical solution:

[0005] An anti-loosening bolt assembly includes a bolt body, which includes a bolt end and a bolt shank. A fixing groove is provided in the middle of the tail portion of the bolt shank towards the bolt end. Two sets of opposing positioning grooves communicating with the fixing groove are provided on the bolt shank. The length direction of the positioning grooves is the same as the length direction of the bolt shank. An adjusting plate is provided within the fixing groove, and a limiting plate is hinged to the adjusting plate. The limiting plate protrudes from the positioning groove. A positioning plate is provided between the limiting plate and the adjusting plate. A threaded abutment is screwed onto the lower part of the fixing groove, and the abutment abuts against the positioning plate.

[0006] A further improvement of this utility model of an anti-loosening bolt assembly is that four sets of circumferentially evenly distributed sliding grooves are provided on the inner side wall of the fixing groove, two sets of oppositely arranged sliding plates are provided on the adjusting plate, the two sliding plates are engaged in the two sliding grooves, and the positioning plate is provided with a second sliding plate that is engaged in another sliding groove.

[0007] A further improvement of this utility model of an anti-loosening bolt assembly is that the lower end of the clamping member is provided with an extension portion, the extension portion extends out of the fixing groove, and a reverse thread portion is provided below the extension portion, the reverse thread portion having the same diameter as the bolt shank portion.

[0008] A further improvement of this utility model of an anti-loosening bolt assembly is that the adjusting plate is rectangular, and the adjusting plate is provided with a second sliding groove, the other end of the second sliding plate being engaged in the second sliding groove.

[0009] A further improvement of this utility model of an anti-loosening bolt assembly is that elastic pads are provided on the sliding plate and the second sliding plate.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This utility model, by setting an adjusting plate, a limiting plate, and a clamping component, achieves a second limiting of the nut at the positioning groove of the bolt shank, ensuring the stability of the nut connection and realizing the anti-loosening performance of the bolt-nut connection; on the other hand, the setting of the reverse thread part also realizes the anti-loosening of the nut. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 for Figure 1 A schematic diagram of the side view structure;

[0014] Figure 3 This is a schematic diagram of the structure of the adjusting plate, the limiting plate, and the second sliding plate of this utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the fixing groove of this utility model.

[0016] In the diagram: 1 Bolt end, 2 Bolt shank, 3 Fixing groove, 4 Positioning groove, 5 Adjusting plate, 6 Limiting plate, 7 Slide plate, 8 Second slide plate, 9 Slide groove. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figures 1 to 4 As shown, an anti-loosening bolt assembly includes a bolt body, which comprises a bolt end 1 and a bolt shank 2. A fixing groove 3 is provided in the middle of the tail portion of the bolt shank towards the bolt end. Two sets of opposing positioning grooves 4 connected to the fixing groove are provided on the bolt shank, with the length direction of the positioning grooves being the same as the length direction of the bolt shank. An adjusting plate 5 is provided within the fixing groove, and a limiting plate 6 is hinged to the adjusting plate. The limiting plate protrudes from the positioning groove to limit the connection of the nut. A positioning plate is provided between the limiting plate and the adjusting plate, and the positioning plate is used to push the limiting plate out of the positioning groove. A threaded retainer is screwed to the lower part of the fixing groove, and the retainer abuts against the positioning plate.

[0019] Specifically, the inner wall of the fixed groove has four sets of circumferentially evenly distributed sliding grooves 9, and the adjusting plate has two sets of oppositely arranged sliding plates 7. The two sliding plates are engaged with the two sliding grooves, and the positioning plate has a second sliding plate 8 that is engaged with another sliding groove. Further, the adjusting plate is rectangular, and a second sliding groove is provided on the end face of the adjusting plate adjacent to the sliding plate. The other end of the second sliding plate is engaged with the second sliding groove. Elastic pads are provided on the sliding plate and the second sliding plate.

[0020] Furthermore, the lower end of the clamping member is provided with an extension that extends out of the fixing groove. Below the extension is a reverse thread, which has the same diameter as the bolt shank. The reverse thread facilitates the arrangement and adjustment of the clamping member and also prevents the connected nut from loosening.

[0021] The working principle of this utility model is as follows: a bolt passes through the object to be fastened, a nut is screwed onto the bolt, the nut is positioned in the positioning groove, an adjusting plate is inserted so that a limiting plate is placed at the nut, a second sliding plate is inserted so that the limiting plate protrudes from the positioning groove and locks the nut, and then a clamping member is installed to position the second sliding plate, so that the overall bolt assembly and the nut have strong connection stability. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An anti-loosening bolt assembly, characterized in that: The device includes a bolt body, which comprises a bolt end and a bolt shank. A fixing groove is provided in the middle of the tail portion of the bolt shank towards the bolt end. Two sets of opposing positioning grooves connected to the fixing groove are provided on the bolt shank, with the length direction of the positioning grooves being the same as the length direction of the bolt shank. An adjusting plate is provided within the fixing groove, and a limiting plate is hinged to the adjusting plate. The limiting plate protrudes from the positioning groove, and a positioning plate is provided between the limiting plate and the adjusting plate. A threaded abutment is screwed onto the lower part of the fixing groove, and the abutment abuts against the positioning plate.

2. The anti-loosening bolt assembly according to claim 1, characterized in that: The inner wall of the fixed groove is provided with four sets of circumferentially evenly distributed sliding grooves. The adjusting plate is provided with two sets of oppositely arranged sliding plates. The two sliding plates are engaged in the two sliding grooves. The positioning plate is provided with a second sliding plate that is engaged in another sliding groove.

3. The anti-loosening bolt assembly according to claim 2, characterized in that: The lower end of the clamping member is provided with an extension portion that extends out of the fixing groove. Below the extension portion is a reverse thread portion that has the same diameter as the bolt shank.

4. The anti-loosening bolt assembly according to claim 3, characterized in that: The adjusting plate is rectangular in shape and has a second sliding groove. The other end of the second sliding plate is inserted into the second sliding groove.

5. The anti-loosening bolt assembly according to claim 4, characterized in that: The first and second skateboards are equipped with elastic pads.

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