Anti-loosening fastening bolt

Abstract

The utility model discloses an anti-loosening fastening bolt which comprises a rod part and an end part, one end, close to the end part, of the rod part is provided with two groups of through grooves which are vertically arranged in a crossed mode, the length direction of the through grooves is the same as that of the rod part, the through grooves are upwards provided with second through grooves, and the second through grooves penetrate through the end part. An extending groove is formed in the second penetrating groove towards the outer side of the end, a positioning plate is arranged on the upper portion of the extending groove, limiting pieces are arranged in the penetrating groove and the second penetrating groove, two sets of limiting plates distributed at intervals are arranged on the upper portions of the limiting pieces, the positioning plate is clamped between the two limiting plates, reverse threads are arranged on the lower portions of the limiting pieces, and abutting and blocking pieces are further arranged in the middle of the penetrating groove and the middle of the second penetrating groove. The abutting and blocking pieces abut against the limiting pieces on the four sides. The through groove is formed, the limiting structure is arranged at the through groove to abut against the external threaded groove, rotation prevention is achieved through the reverse threads, then the stability of bolt connection is guaranteed, the structure is simple, convenient and stable, and operation, adjustment and use are convenient and fast.

Description

Technical Field

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

[0002] Bolts are common fasteners. To ensure connection strength under vibration conditions, anti-loosening structures are usually added to bolts. A Chinese utility model patent with application number 201921513601.7 discloses an expansion-type anti-loosening bolt, which increases connection stability through an expansion core working in conjunction with an expansion cavity at the bottom of the bolt. However, this bolt structure, due to the expansion cavity at the tail and the outward expansion under the action of the expansion core, suffers from relatively low structural strength stability. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of the aforementioned background technology by providing a bolt with a stable structure and good anti-loosening effect for fasteners with threaded grooves.

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

[0005] An anti-loosening fastening bolt includes a shank and an end. The shank has two sets of perpendicularly intersecting through grooves near the end, the length direction of which is the same as the length direction of the shank. A second through groove extends upwards from the first through groove, passing through the end. An extension groove extends outwards from the second through groove. A positioning plate is provided on the upper part of the extension groove. Limiting members are provided within the first and second through grooves. Two sets of spaced-apart limiting plates are provided on the upper part of each limiting member, and the positioning plate is engaged between the two limiting plates. A reverse thread is provided on the lower part of each limiting member. A blocking member is also provided in the middle of the first and second through grooves, abutting against the limiting members on all four sides. The reverse thread on the limiting member is used to abut against the externally positioned threaded groove. An elastic pad is provided at the end of the blocking member near the limiting member.

[0006] A further improvement of this utility model for an anti-loosening fastening bolt is that the blocking member is lower than the upper end face, and the blocking member has a protrusion in the middle, which is used for pulling by an external tool.

[0007] A further improvement of this utility model on an anti-loosening fastening bolt is that the protrusion is lower than the upper end face of the end.

[0008] Compared with the prior art, the beneficial effects of this utility model are:

[0009] This utility model sets a through groove and a limiting structure at the through groove to resist the external threaded groove, and achieves anti-rotation through reverse thread, thereby ensuring the stability of the bolt connection. The structure is simple and stable, and the operation and adjustment are convenient. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 for Figure 1 A top-view structural diagram;

[0012] Figure 3 This is a schematic diagram of the structure of the limiting component of this utility model.

[0013] In the figure: 1 rod, 2 end, 3 through groove, 4 second through groove, 5 extension groove, 6 limiting member, 7 positioning plate, 8 limiting plate, 9 blocking member, 10 protrusion. Detailed Implementation

[0014] 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.

[0015] like Figure 1 As shown, an anti-loosening fastening bolt includes a shank 1 and an end 2. Near the end of the shank, two sets of perpendicularly intersecting through slots 3 are provided, with the intersection located at the center of the shank's cross-section. The length direction of the through slots is the same as the length direction of the shank. A second through slot 4 extends upward from the through slot 3, passing through the end. An extension slot 5 extends outward from the end of the second through slot. A positioning plate 7 is provided above the extension slot. Limiting members 6 are provided within the through slots and the second through slot. Two sets of spaced-apart limiting plates 8 are provided above the limiting members. The positioning plate 7 is engaged between the two limiting plates 8. A reverse thread is provided at the bottom of the limiting members. A blocking member 9 is also provided in the middle of the through slots and the second through slot. The blocking member abuts against the limiting members on all four sides. The reverse thread on the limiting member is used to abut against the externally positioned threaded groove. An elastic washer is provided at the end of the blocking member near the limiting member. The reverse thread on the limiting member is opposite to the thread inside the externally positioned threaded groove.

[0016] Furthermore, the blocking member is lower than the upper end face, and a protrusion 10 is provided in the middle of the blocking member, which is used for pulling by an external tool. The protrusion is lower than the upper end face.

[0017] The working principle of this utility model is as follows: the bolt is connected to the external threaded groove, and a limiting member is arranged so that the limiting member and the positioning member are locked together. Then, a blocking member is arranged so that the limiting member moves toward the threaded groove and the fastened part and makes contact, thereby improving the connection stability between the bolt, the fastened object and the threaded groove.

[0018] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A locking bolt, characterized in that: The device includes a rod and an end portion. Near the end portion, the rod has two sets of perpendicularly intersecting through slots, the length of which is the same as the length of the rod. A second through slot extends upwards through the end portion. An extension slot extends outwards from the end portion. A positioning plate is located on the upper part of the extension slot. Limiting members are located within the through slots and the second through slot. Two sets of spaced-apart limiting plates are located on the upper part of each limiting member. The positioning plate is engaged between the two limiting plates. A reverse thread is located on the lower part of each limiting member. A blocking member is also located in the middle of the through slots and the second through slot. The blocking member abuts against the limiting members on all four sides. The reverse thread on the limiting member abuts against the externally positioned threaded groove. An elastic pad is located at the end of the blocking member near the limiting member.

2. The anti-loosening fastening bolt according to claim 1, characterized in that: The blocking member is lower than the upper end face, and the blocking member has a protrusion in the middle, which is used for pulling by an external tool.

3. The anti-loosening fastening bolt according to claim 2, characterized in that: The protrusion is lower than the upper end face of the end.

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