Bolt with multi-stage anti-loosening function

Abstract

The bolt with the multi-stage anti-loosening function comprises an end head, a threaded rod and expansion grooves, the end head is fixedly connected to the upper end of the threaded rod, the expansion grooves are evenly formed in the bottom end of the threaded rod, extrusion control grooves are formed in the end head and the upper end of the threaded rod, and the end head and the upper end of the threaded rod are connected through the extrusion control grooves. A fixing disc is fixedly installed at the upper end of the end head through an auxiliary fixing bolt, sliding fixing clamping plates are evenly clamped in the side end of the end head in a sliding mode, and the upper ends of the sliding fixing clamping plates are extruded and fixed through the bottom end of the fixing disc. According to the requirement for fixed installation and use of the threaded rod, the anti-loosening mode can be selectively used, and anti-loosening can be synchronously carried out in multiple modes.

Description

Technical Field

[0001] The utility model relates to the technical field of bolts, in particular to a bolt with a multi-stage anti-loosening function. Background Art

[0002] Bolts are commonly used fasteners that fasten two parts (or components) with through holes together through the cooperation of threads and nuts. However, the existing bolts cannot be selectively set to prevent loosening according to the needs of use and installation during use, so that the bolts after fixed installation are easy to loosen during use, which greatly reduces the effect of fixed connection. Therefore, a bolt with multi-level anti-loosening function is needed to solve the above-mentioned problems. Utility Model Content

[0003] The utility model aims to provide a bolt with a multi-stage anti-loosening function to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bolt with a multi-stage anti-loosening function, comprising an end head, a threaded rod and an expansion groove, the end head is fixedly connected to the upper end of the threaded rod, the expansion groove is evenly opened at the bottom end of the threaded rod, and an extrusion control groove is opened inside the end head and the upper end of the threaded rod.

[0005] Preferably, a fixing plate is fixedly mounted on the upper end of the end head by auxiliary fixing bolts, a sliding fixing card is evenly slidably clamped inside the side end of the end head, and the bottom end of the fixing plate squeezes and fixes the upper end of the sliding fixing card.

[0006] Preferably, a screw thread column is installed on the threaded transfer on the sliding fixed clamping plate.

[0007] Preferably, the bottom end of the screw threaded column is fixedly connected to a rubber extrusion block.

[0008] Preferably, a squeezing disc is provided inside the squeezing control groove, and a squeezing ball is provided at the bottom end of the squeezing disc.

[0009] Preferably, the hole diameter of the extrusion control groove on the threaded rod is larger than the hole diameter of the expansion groove on the threaded rod, and the connecting ends of the two are arranged in a smooth arc shape, and the diameter of the extrusion ball is the same as the hole diameter of the extrusion control groove.

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

[0011] The utility model can selectively use the anti-loosening method according to the needs of the threaded rod fixed installation and use, and can also simultaneously prevent loosening in multiple ways. When the threaded rod is fixed and does not need to be removed or replaced again, the extrusion plate and the extrusion ball are inserted into the extrusion control groove, and the extrusion plate is knocked from the outside so that the extrusion ball is squeezed and inserted into the expansion groove provided in the threaded rod from the lowest end of the extrusion control groove provided in the threaded rod, and the lowest end of the threaded rod is supported and expanded outward, so as to play the role of clamping and locking, so that the threaded rod can be used stably and firmly during use. When the threaded rod needs to be disassembled or replaced during use, there is no need to use the extrusion plate and the extrusion ball, and each sliding fixing clamping plate is slidably clamped on the end head, and the fixing plate is fixed on the end head by the auxiliary fixing bolt, and the upper end of each sliding fixing clamping plate can be clamped and locked on the end head by pressing the limit at the bottom end of the fixing plate, and then the bottom end of the rubber extrusion block is squeezed and contacted with the end face of the fixed pipe fitting by screwing the screw thread column, so as to increase the support and fixing area, so that the threaded rod and the end head will not slide or loosen during use, so as to play the role of stable support and anti-loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the main three-dimensional structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the terminal structure of the utility model;

[0014] Figure 3 This is a schematic diagram of the upper end structure of the terminal of the utility model;

[0015] Figure 4 It is a schematic diagram of the internal structure of the threaded rod of the utility model.

[0016] In the figure: 1-end, 2-threaded rod, 3-expansion groove, 4-extrusion plate, 5-extrusion ball, 6-fixing plate, 7-auxiliary fixing bolt, 8-screw threaded column, 9-rubber extrusion block, 10-sliding fixing card plate, 11-extrusion control groove. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-4The utility model provides an embodiment: a bolt with a multi-stage anti-loosening function, including an end head 1, a threaded rod 2 and an expansion groove 3, the end head 1 is fixedly connected to the upper end of the threaded rod 2, the expansion groove 3 is evenly opened at the bottom end of the threaded rod 2, and an extrusion control groove 11 is opened inside the end head 1 and the upper end of the threaded rod 2.

[0019] The upper end of the end head 1 is fixedly mounted with a fixing plate 6 by means of an auxiliary fixing bolt 7, and a sliding fixing card plate 10 is evenly slidably clamped inside the side end of the end head 1, and the bottom end of the fixing plate 6 squeezes and fixes the upper end of the sliding fixing card plate 10.

[0020] A screw thread column 8 is installed on the sliding fixed clamping plate 10 through a threaded transfer, and a rubber extrusion block 9 is fixedly connected to the bottom end of the screw thread column 8 to play a role in auxiliary support stability and anti-slip rotation.

[0021] A squeezing disc 4 is arranged inside the squeezing control groove 11 , and a squeezing ball 5 is arranged at the bottom end of the squeezing disc 4 to play a squeezing role.

[0022] The aperture of the extrusion control groove 11 on the threaded rod 2 is larger than the aperture of the expansion groove 3 on the threaded rod 2, and the connecting ends of the two are arranged in a smooth arc shape. The diameter of the extrusion ball 5 is the same as the aperture of the extrusion control groove 11, and the extrusion ball 5 can be used to squeeze the bottom end of the threaded rod 2 to expand outward and be fixed and locked.

[0023] Working principle: In practical application, the threaded rod 2 can be screwed to the specified position by clamping and screwing the end head 1 to fix it. When the threaded rod 2 is fixed and does not need to be removed or replaced again, the extrusion plate 4 and the extrusion ball 5 are inserted into the extrusion control groove 11 after the threaded rod 2 is fixed, and the extrusion plate 4 is knocked from the outside to make the extrusion ball 5 squeezed from the lowest end of the extrusion control groove 11 opened in the threaded rod 2 into the expansion groove 3 opened in the threaded rod 2, and the lowest end of the threaded rod 2 is supported and expanded outward to play a role of locking, so that the threaded rod 2 can be used stably and firmly during use. When the threaded rod 2 needs to be disassembled or replaced during use, there is no need to use the extrusion plate 4 and the extrusion ball 5. Each sliding fixed card plate 10 is slidably clamped on the end head 1, and the fixing plate 6 is fixed to the end head 1 by the auxiliary fixing bolt 7. The upper end of each sliding fixed card plate 10 can be clamped and locked on the end head 1 by pressing the bottom end of the fixing plate 6 to limit the position. Then, the threaded column 8 is screwed to make the bottom end of the rubber extrusion block 9 squeeze and contact with the fixed end face of the pipe fitting, thereby increasing the supporting and fixing area, so that the threaded rod 2 and the end head 1 will not slide or loosen during use, thereby playing a role of stable support and anti-loosening.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bolt with a multi-stage anti-loosening function, comprising an end (1), a threaded rod (2) and an expansion groove (3), characterized in that: The end head (1) is fixedly connected to the upper end of the threaded rod (2), the expansion grooves (3) are evenly arranged at the bottom end of the threaded rod (2), and an extrusion control groove (11) is arranged inside the end head (1) and the upper end of the threaded rod (2).

2. The bolt with multi-stage anti-loosening function according to claim 1, characterized in that: The upper end of the end head (1) is fixedly mounted with a fixing plate (6) via an auxiliary fixing bolt (7); a sliding fixing card plate (10) is evenly slidably clamped inside the side end of the end head (1); and the bottom end of the fixing plate (6) squeezes and fixes the upper end of the sliding fixing card plate (10).

3. The bolt with multi-stage anti-loosening function according to claim 2, characterized in that: The sliding fixed clamping plate (10) is threadedly mounted with a screw thread column (8).

4. The bolt with multi-stage anti-loosening function according to claim 3, characterized in that: The bottom end of the screw threaded column (8) is fixedly connected to a rubber extrusion block (9).

5. The bolt with multi-stage anti-loosening function according to claim 4, characterized in that: A squeezing disc (4) is arranged inside the squeezing control groove (11), and a squeezing ball (5) is arranged at the bottom end of the squeezing disc (4).

6. The bolt with multi-stage anti-loosening function according to claim 5, characterized in that: The hole diameter of the extrusion control groove (11) provided on the threaded rod (2) is larger than the hole diameter of the expansion groove (3) provided on the threaded rod (2), and the connection ends of the two are arranged in a smooth arc shape, and the diameter of the extrusion ball (5) is the same as the hole diameter of the extrusion control groove (11).

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