Anti-loose combined nut

Abstract

The utility model discloses an anti-loose combined nut which comprises a first nut and a second nut, a horizontal fixing groove is outwards formed in the lower end of a threaded hole of the first nut, a horizontal second fixing groove is outwards formed in the upper end of a threaded hole of the second nut, the fixing groove corresponds to the second fixing groove, a limiting piece is arranged in the second fixing groove, and the limiting piece is matched with the first nut. The limiting piece protrudes out of the second fixing groove and is arranged in the fixing groove, the limiting piece comprises a spring and a limiting block, and anti-skid lines are arranged on the end face, close to the bolt, of the limiting block and used for clamping and abutting against the bolt. The two groups of connected nuts are arranged, so that the connection area is increased, and the connection stability with the bolt is further improved; and meanwhile, the end faces of the two nuts are conveniently slotted, and limiting pieces are arranged and used for further limiting the bolts, so that the stability of connection of the bolts and the nuts is further improved.

Description

Technical Field

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

[0002] In existing applications, nuts are typically used in conjunction with bolts, with the two connected by threads for fastening. However, the simple bolt-nut thread fastening can loosen under vibration conditions. To address this loosening issue, a utility model patent with patent number 202020725132.1 discloses a double hexagonal head bolt, which incorporates a limiting rod, a fixing block, and a pressure spring within the nut. This allows the fixing block to further tighten the bolt, improving connection stability. However, the aforementioned structure, which involves slotting the nut's inner side and arranging the limiting rod, fixing block, and pressure spring, suffers from inconvenient operation and low production efficiency. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of the aforementioned background technology by providing a simple-structured, stable anti-loosening combination nut.

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

[0005] A locking nut assembly includes a first nut and a second nut. The lower end of the threaded hole of the first nut has a horizontal fixing groove extending outward, and the upper end of the threaded hole of the second nut has a horizontal second fixing groove extending outward. The fixing groove and the second fixing groove correspond to each other. A limiting member is provided in the second fixing groove. The limiting member protrudes from the second fixing groove and is placed inside the fixing groove. The limiting member includes a spring and a limiting block. The end face of the limiting block near the bolt is provided with anti-slip texture, which is used to lock the bolt.

[0006] A further improvement of this utility model of an anti-loosening combination nut is that the lower end of the first nut is provided with an embedding groove facing upwards, and the upper end of the second nut is provided with an embedding part that is embedded in the embedding groove facing upwards.

[0007] A further improvement of this utility model of an anti-loosening combination nut is that the embedding groove and the embedding part are both circular and are eccentrically arranged relative to the threaded holes of the first nut and the second nut.

[0008] A further improvement of this utility model of an anti-loosening combination nut is that a triangular notch is provided on the lower end face of the limiting block, and a vertical through hole groove is provided on the second nut to penetrate the second fixing groove. A limiting rod is provided in the through hole groove, and the limiting rod is used to resist the limiting block to move away from the bolt.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This utility model features two sets of connected nuts, increasing the connection area and thus improving the stability of the connection with the bolt. Simultaneously, slots are conveniently cut on the end faces of the two nuts, and limiting elements are provided to further limit the bolt, further enhancing the stability of the bolt-nut connection. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] In the figure: 1 First nut, 2 Second nut, 3 Fixing groove, 4 Second fixing groove, 5 Spring, 6 Limiting block, 7 Embedding groove, 8 Embedding part, 9 Triangular notch, 10 Through hole groove. Detailed Implementation

[0013] 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.

[0014] like Figure 1 As shown, an anti-loosening combination nut includes a first nut 1 and a second nut 2. The lower end of the threaded hole of the first nut has a horizontal fixing groove 3 extending outwards, and the upper end of the threaded hole of the second nut has a horizontal second fixing groove 4 extending outwards. The fixing groove and the second fixing groove correspond to each other. A limiting element is provided within the second fixing groove, protruding from the second fixing groove and positioned within it. The limiting element includes a spring 5 and a limiting block 6. Anti-slip textures are provided on the end face of the limiting block near the bolt, and these textures are used to engage the bolt. At least two sets of the aforementioned fixing groove, second fixing groove, and limiting element are provided, evenly distributed.

[0015] Furthermore, the lower end of the first nut has an upward-facing embedding groove 7, and the upper end of the second nut has an upward-facing embedding portion 8 that embeds into the embedding groove. Both the embedding groove and the embedding portion are circular and eccentrically positioned relative to the threaded holes of the first and second nuts. This enables the two nuts to move together, increases the connection area, and improves connection stability. Preferably, the embedding groove and the embedding portion can communicate with the fixing groove and the second fixing groove, improving ease of installation.

[0016] Furthermore, a triangular notch 9 is provided on the lower end face of the limiting block, and a vertical through hole 10 is provided on the second nut to pass through the second fixing groove. A limiting rod is provided in the through hole, which is used to resist the limiting block to move away from the bolt.

[0017] The working principle of this utility model is as follows: When two nuts are locked together, due to the eccentric setting of the embedded part, the two form a whole. At this time, the limiting member is placed between the two nuts. The limiting rod is inserted into the through hole groove to make the limiting block close to the spring and the bolt is screwed in. After it is in place, the limiting rod is pulled out and the limiting block locks against the bolt, which further improves the connection stability.

[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 combination anti-loosening nut, characterized in that: It includes a first nut and a second nut, the lower end of the threaded hole of the first nut is provided with a horizontal fixing groove outwardly, and the upper end of the threaded hole of the second nut is provided with a horizontal second fixing groove outwardly, the fixing groove and the second fixing groove correspond to each other, a limiting member is arranged in the second fixing groove, the limiting member protrudes from the second fixing groove and is arranged in the fixing groove, the limiting member includes a spring and a limiting block, and an anti-slip pattern is arranged on an end surface of the limiting block close to the bolt, and the anti-slip pattern is used to clamp the bolt.

2. The anti-loosening combination nut according to claim 1, characterized in that: An embedding groove is upwardly provided on the lower end surface of the first nut, and an embedding portion embedded in the embedding groove is upwardly provided on the upper end surface of the second nut.

3. The anti-loosening combination nut according to claim 2, characterized in that: The embedding groove and the embedding portion are both circular and eccentrically arranged relative to the threaded holes of the first nut and the second nut.

4. The anti-loosening combination nut according to claim 3, characterized in that: A triangular notch is provided on the lower end surface of the limit block, and a vertical through hole slot penetrating the second fixing slot is provided on the second nut. A limit rod is provided in the through hole slot, and the limit rod is used to support the limit block to move in a direction away from the bolt.

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