Anti-loosening fastener

Abstract

The utility model relates to the field of fasteners, and discloses an anti-loosening fastener which comprises a hoop, the hoop is arranged on the outer surface of a pipeline in a sleeved mode, then one end of a threaded rod is inserted into the inner walls of the two ends of the hoop, at the moment, one clamping block is pulled to slide towards one end in the inner wall of a sliding groove, and the other clamping block is pulled to slide towards the other end in the inner wall of the sliding groove. When one side of the threaded rod abuts against one side of the hoop, the clamping block is loosened, one end of the clamping block is inserted into the clamping groove in the threaded rod under the reset effect of the spring, then the clamping block is secondarily limited and fixed through the auxiliary mechanism, and finally the nut is screwed on the threaded rod. After the two ends of the hoop are extruded to be shrunk to fix the pipeline, the hoop is limited and fixed through the same operation, in this way, if the threaded rod and the nut are in complex working conditions such as long-time vibration and impact, the threaded rod and the nut are not prone to slipping or reverse rotation and loosening, the stability of the connecting position is improved, and the service life of the pipeline is prolonged. And the equipment operation safety is prevented from being influenced.

Description

Technical Field

[0001] This utility model relates to the field of fasteners, and in particular to a fastener for preventing loosening. Background Technology

[0002] Fasteners are mechanical components used to connect two or more parts together and keep them in a fixed state. Common types of fasteners include screws, nuts, washers, bolts, pins, and clamps.

[0003] In industrial production and engineering construction, fasteners consisting of clamps, threaded rods, and nuts are widely used for pipe fixing, mechanical connections, and other applications due to their ease of operation and versatility. However, under complex working conditions such as vibration and impact, the threaded rod and nut are prone to stripping, reversing, and loosening after being tightened, leading to connection failure and affecting the safe operation of equipment. Utility Model Content

[0004] The purpose of this invention is to provide a fastener that prevents loosening, thereby solving the problems in the prior art.

[0005] This invention is implemented as follows: a fastener designed to prevent loosening includes a clamp and a threaded rod. One end of the threaded rod is inserted into the inner walls of both ends of the clamp, and a nut is threaded onto the outer surface of one end of the threaded rod. One end of the nut abuts against one side of the clamp. Anti-loosening devices are provided between the outer surface of one end of the threaded rod and the outer surface of the nut and the two ends of the clamp, respectively. The anti-loosening devices can be fixed by a spring-reset mechanism that causes a locking block to be inserted into a slot on the outer surface of the threaded rod and the nut. Then, an auxiliary mechanism is used to fix the locking block in the slot again to strengthen the fixing, thereby achieving an effective anti-loosening effect.

[0006] Preferably, the anti-loosening device includes a locking block, with sliding grooves on both sides of the clamp, one end of the locking block being slidably installed in the inner wall of the sliding groove, and slots on the outer surface of one end of the threaded rod and the outer surface of the nut, with one end of the locking block inserted into the inner wall of the slot; a spring, with both ends of the spring fixedly installed on one side of the inner wall of the sliding groove and one side of the locking block, respectively; and an auxiliary mechanism, which is disposed between one end of the locking block and the inner wall of the slot, for secondary limiting and fixing of the one end of the locking block inserted into the slot.

[0007] Preferably, the anti-loosening device further includes a telescopic rod, wherein the outer surface of the telescopic rod is installed through the inner wall of the spring, and both ends are respectively fixedly installed on one side of the locking block and one side of the inner wall of the slide groove.

[0008] Preferably, the auxiliary mechanism includes a pin, wherein one side of the pin is fixedly installed on one side of the inner wall of the slot, a circular groove is provided on one side of the card block, and one end of the pin is inserted into the inner wall of the circular groove; and a glue ball, wherein the glue ball is inserted into one side of the inner wall of the circular groove.

[0009] Preferably, one end of the card block has a T-shaped longitudinal section, and the inner wall of the slide groove has a T-shaped longitudinal section.

[0010] Preferably, one side of the card block is provided with a disassembly mechanism, which includes a protective cover, wherein the protective cover is rotatably mounted on one side of the card block, a flow guide hole is provided on one side of the card block, the inner wall of the flow guide hole is connected to the inner wall of the circular groove, and one side of the protective cover abuts against one side of the card block to completely cover the inlet of the flow guide hole; and a torsion spring, wherein the torsion spring is sleeved on the outer surface of one end of the protective cover, and both ends are respectively fixedly mounted on one side of the protective cover and one side of the card block.

[0011] Preferably, a sealing block is fixedly installed on one side of the protective cover. The sealing block is fixed on the side of the protective cover near the guide hole, and the outer surface diameter is larger than the inner wall diameter of the guide hole.

[0012] Preferably, an elastic rubber block is fixedly installed on one side of the inner wall of the guide hole, and the elastic rubber block is fixedly installed at an angle on the inner wall of the guide hole near the end of the protective cover.

[0013] The beneficial effect of this utility model's anti-loosening fastener is as follows: By setting an anti-loosening device, when using a clamp to fasten a pipe, the clamp is fitted onto the outer surface of the pipe, and then one end of a threaded rod is inserted into the inner walls of both ends of the clamp. At this point, one of the locking blocks is pulled and slids to a certain position within the inner wall of the groove, causing the spring to contract. When one end of the threaded rod abuts against one side of the clamp, the locking block is released, allowing it to be inserted into the inner wall of the groove on one end of the threaded rod under the spring's reset action. Then, with the help of an auxiliary mechanism, it is limited and fixed for a second time. Finally, the nut is screwed onto the threaded rod to a certain position. The same operation is performed. After the nut squeezes the two ends of the clamp to make it contract and fix the pipe, it is limited and fixed by the clamp and auxiliary mechanism. In this way, the threaded rod and nut work together to lock the clamp. During use, if the application scenario is under complex working conditions such as long-term vibration and impact, the threaded rod and nut are not prone to stripping, reversing and loosening, which improves the stability of the connection and avoids affecting the safe operation of the equipment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a three-dimensional structural diagram of the clamp of this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the card block of this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the protective cover of this utility model.

[0018] Markings: 1. Clamp; 2. Anti-loosening device; 3. Threaded rod; 4. Nut; 21. Slide groove; 22. Slot; 23. Spring; 24. Block; 25. Telescopic rod; 26. Auxiliary mechanism; 261. Pin; 262. Circular groove; 263. Glue ball; 27. Easy disassembly mechanism; 271. Drainage hole; 272. Protective cover; 273. Torsion spring; 274. Sealing block; 275. Elastic rubber block. Detailed Implementation

[0019] 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.

[0020] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0021] The implementation of this utility model will be described in detail below with reference to specific embodiments.

[0022] In this embodiment:

[0023] Reference Figure 1 The diagram shows a preferred embodiment of the present invention.

[0024] This embodiment of an anti-loosening fastener includes a clamp 1 and a threaded rod 3. One end of the threaded rod 3 is inserted into the inner walls of both ends of the clamp 1. A nut 4 is threaded onto the outer surface of one end of the threaded rod 3, with one end of the nut 4 abutting against one side of the clamp 1. Anti-loosening devices 2 are provided between the outer surface of one end of the threaded rod 3 and the outer surface of the nut 4 and the two ends of the clamp 1, respectively. The anti-loosening device 2 can be reset by a spring 23 to drive a locking block 24 into a slot 22 opened on the outer surface of the threaded rod 3 and the nut 4 to limit and fix them. Then, an auxiliary mechanism 26 fixes the locking block 24 in the slot 22 again to strengthen the limiting and fixing, thereby achieving an effective anti-loosening effect.

[0025] Figure 1-4 The anti-loosening device 2 shown includes a locking block 24. Both ends of the clamp 1 are provided with sliding grooves 21. One end of the locking block 24 is slidably installed in the inner wall of the sliding groove 21. The outer surface of one end of the threaded rod 3 and the outer surface of the nut 4 are provided with slots 22. One end of the locking block 24 is inserted into the inner wall of the slot 22. A spring 23 is provided. Both ends of the spring 23 are fixedly installed on one side of the inner wall of the sliding groove 21 and one side of the locking block 24, respectively. An auxiliary mechanism 26 is provided between one end of the locking block 24 and the inner wall of the slot 22. It is used to perform secondary limiting and fixing of one end of the locking block 24 inserted into the slot 22. By setting the anti-loosening device 2, when using the clamp 1 to tighten the pipe, the clamp 1 is fitted onto the outer surface of the pipe, and then one end of the threaded rod 3 is inserted into the inner walls of both ends of the clamp 1. At this time, one of the locking blocks 24 is pulled and slid to one end in the inner wall of the groove 21 to a certain position, causing the spring 23 to contract. When one end of the threaded rod 3 is pressed against one side of the clamp 1, the locking block 24 is released, and under the reset action of the spring 23, one end is inserted into the inner wall of the groove 22 opened on one end of the threaded rod 3. Then, with the help of the auxiliary mechanism 26, A secondary limiting and fixing process is performed, and finally, the nut 4 is screwed onto the threaded rod 3 to a certain position. The same operation is repeated. After the nut 4 compresses both ends of the clamp 1 to cause it to contract and fix the pipe, it is fixed by the locking block 24 and the auxiliary mechanism 26. In this way, the threaded rod 3 and the nut 4 work together to lock the clamp 1. During use, even under complex conditions such as prolonged vibration and impact, the threaded rod 3 and the nut 4 are less likely to slip, reverse, or loosen, improving the stability of the connection and avoiding affecting the safe operation of the equipment. The anti-loosening device 2 also includes a telescopic rod 25, whose outer surface is installed through the inner wall of the spring 23, and its two ends are respectively fixed to one side of the locking block 24 and one side of the inner wall of the slide groove 21. By setting the telescopic rod 25, the inner wall of the spring 23 can be supported and reinforced, making the spring 23 less prone to damage during use and extending its service life.

[0026] Figure 1-4 The auxiliary mechanism 26 shown includes a pin 261, one side of which is fixedly installed on one side of the inner wall of the slot 22, and a circular groove 262 is provided on one side of the block 24, with one end of the pin 261 inserted into the inner wall of the circular groove 262; and a glue ball 263, which is inserted into one side of the inner wall of the circular groove 262. By setting the auxiliary mechanism 26, when the locking block 24 is locked into the locking slot 22 under the reset action of the spring 23, it will drive the circular groove 262 and the glue ball 263 to be locked into the locking slot 22 together. When it is inserted into the locking slot 22 to a certain position, the pin 261 in the locking slot 22 will insert into the circular groove 262 and puncture the glue ball 263, exposing the glue inside. The pin 261 will stick to the inner wall of the circular groove 262, and at the same time, one end of the locking block 24 will stick to the locking slot 22, which will limit and fix it a second time, improve the fixing effect of the locking block 24, and prevent it from slipping out. The longitudinal section of one end of the locking block 24 is T-shaped, and the longitudinal section of the inner wall of the sliding groove 21 is T-shaped. By setting one end of the locking block 24 and the inner wall of the sliding groove 21 to be T-shaped, the locking block 24 is less likely to wobble when sliding back and forth in the inner wall of the sliding groove 21.

[0027] Figure 1-4 The shown block 24 has a disassembly mechanism 27 on one side. The disassembly mechanism 27 includes a protective cover 272, which is rotatably mounted on one side of the block 24. A guide hole 271 is provided on one side of the block 24. The inner wall of the guide hole 271 is connected to the inner wall of the circular groove 262. One side of the protective cover 272 abuts against one side of the block 24 and completely covers the inlet of the guide hole 271. A torsion spring 273 is sleeved on the outer surface of one end of the protective cover 272, and both ends are fixedly mounted on one side of the protective cover 272 and one side of the block 24, respectively. By setting up a disassembly mechanism 27, when it is necessary to remove the nut 4 and threaded rod 3 from the clamp 1, the protective cover 272 can be manually rotated to a certain angle on one side of the locking block 24, causing the torsion spring 273 to deform, thus exposing the inlet of the guide hole 271. Finally, the alcohol solvent is squeezed from the inlet of the guide hole 271 into the inner wall of the circular groove 262 to dissolve the glue inside, thereby releasing the secondary limiting and fixing of the locking block 24 by the auxiliary mechanism 26. Finally, the locking block 24 is slid to one end to a certain position, so that one end is pulled out of the locking groove 22, and it can be disassembled, making it easy to remove the threaded rod 3 and nut 4 from the clamp 1 for replacement and reuse.

[0028] Figure 1-4A sealing block 274 is fixedly installed on one side of the protective cover 272. The sealing block 274 is fixed on the side of the protective cover 272 near the guide hole 271, and its outer surface diameter is larger than the inner wall size of the guide hole 271. By setting the sealing block 274, the gap between the protective cover 272 and the guide hole 271 can be sealed and blocked, preventing dust and impurities from entering the interior of the guide hole 271 and causing blockage. An elastic rubber block 275 is fixedly installed on one side of the inner wall of the guide hole 271. The elastic rubber block 275 is fixedly installed at an angle at the end of the inner wall of the guide hole 271 near the protective cover 272. By setting the elastic rubber block 275, the flow area at the end of the guide hole 271 near the protective cover 272 can be reduced. This prevents excess glue from overflowing after entering the guide hole 271, making it easier to add alcohol solvent to melt the glue later and to remove the retaining block 24.

[0029] Working principle: When using clamp 1 to fasten the pipe, clamp 1 is fitted onto the outer surface of the pipe. Then, one end of threaded rod 3 is inserted into the inner walls of both ends of clamp 1. First, one of the locking blocks 24 is pulled and slids to a certain position in the inner wall of groove 21, causing spring 23 to contract. When one end of threaded rod 3 is pressed against one side of clamp 1, locking block 24 is released. Under the reset action of spring 23, one end is inserted into the inner wall of groove 22 on one end of threaded rod 3. This causes the circular groove 262 and glue ball 263 to be inserted into groove 22 together. When inserted into groove 22 to a certain position, pin 261 in groove 22 inserts into circular groove 262 and punctures glue ball 263, allowing it to... With the internal glue exposed, the pin 261 is glued to the inner wall of the circular groove 262, and one end of the locking block 24 is glued to the groove 22 for secondary positioning and fixation, improving the fixing effect of the locking block 24. Finally, the nut 4 is screwed onto the threaded rod 3 to a certain position, and the same operation is performed. After the nut 4 squeezes the two ends of the clamp 1 to make it contract and fix the pipe, it is fixed by the locking block 24 and the auxiliary mechanism 26. In this way, the threaded rod 3 and the nut 4 work together to lock the clamp 1. During use, if the application scenario is under complex working conditions such as long-term vibration and impact, the threaded rod 3 and the nut 4 are not prone to stripping, reversing and loosening, improving the stability of the connection and avoiding affecting the safe operation of the equipment.

[0030] When it is necessary to remove the nut 4 and threaded rod 3 from the clamp 1, the protective cover 272 can be manually rotated to a certain angle on one side of the locking block 24, causing the torsion spring 273 to deform and then exposing the inlet of the guide hole 271. Finally, the alcohol solvent is squeezed from the inlet of the guide hole 271 into the inner wall of the circular groove 262 to dissolve the glue inside, release the secondary limiting fixation of the locking block 24 by the auxiliary mechanism 26, and finally slide the locking block 24 to one end to a certain position so that one end is pulled out from the locking groove 22, and it can be removed, making it easy to remove the threaded rod 3 and nut 4 from the clamp 1 for replacement and reuse.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fastener for preventing loosening, comprising a clamp (1) and a threaded rod (3), characterized in that: One end of the threaded rod (3) is inserted into the inner wall of both ends of the clamp (1). A nut (4) is threaded onto the outer surface of one end of the threaded rod (3). One end of the nut (4) abuts against one side of the clamp (1). An anti-loosening device (2) is provided between the outer surface of one end of the threaded rod (3) and the outer surface of the nut (4) and both ends of the clamp (1). The anti-loosening device (2) can be reset by a spring (23) to drive the locking block (24) to be inserted into the slot (22) opened on the outer surface of the threaded rod (3) and the nut (4) for limiting and fixing. Then, the locking block (24) is fixed in the slot (22) again by an auxiliary mechanism (26) to strengthen the limiting and fixing, thereby achieving an effective anti-loosening effect.

2. The anti-loosening fastener as described in claim 1, characterized in that: The anti-loosening device (2) includes a locking block (24). Both ends of the clamp (1) are provided with sliding grooves (21). One end of the locking block (24) is slidably installed in the inner wall of the sliding groove (21). The outer surface of one end of the threaded rod (3) and the outer surface of the nut (4) are provided with locking grooves (22). One end of the locking block (24) is inserted into the inner wall of the locking groove (22). Spring (23), wherein the two ends of spring (23) are respectively fixedly installed on one side of the inner wall of the slide (21) and one side of the block (24); The auxiliary mechanism (26) is located between one end of the card block (24) and the inner wall of the card slot (22) and is used to perform secondary positioning and fixing of one end of the card block (24) inserted into the card slot (22).

3. The anti-loosening fastener as described in claim 2, characterized in that: The anti-loosening device (2) also includes a telescopic rod (25), wherein the outer surface of the telescopic rod (25) is installed through the inner wall of the spring (23), and both ends are fixedly installed on one side of the locking block (24) and one side of the inner wall of the slide groove (21), respectively.

4. The anti-loosening fastener as described in claim 2, characterized in that: The auxiliary mechanism (26) includes a pin (261), wherein one side of the pin (261) is fixedly installed on one side of the inner wall of the slot (22), and a circular groove (262) is provided on one side of the block (24), and one end of the pin (261) is inserted into the inner wall of the circular groove (262). A glue balloon (263) is inserted into one side of the inner wall of a circular groove (262).

5. The anti-loosening fastener as described in claim 2, characterized in that: One end of the card block (24) has a T-shaped longitudinal section, and the inner wall of the slide groove (21) has a T-shaped longitudinal section.

6. The anti-loosening fastener as described in claim 2, characterized in that: The card block (24) is provided with a disassembly mechanism (27) on one side. The disassembly mechanism (27) includes a protective cover (272), wherein the protective cover (272) is rotatably mounted on one side of the card block (24). A guide hole (271) is provided on one side of the card block (24). The inner wall of the guide hole (271) is connected to the inner wall of the circular groove (262). One side of the protective cover (272) abuts against one side of the card block (24) and completely covers the inlet of the guide hole (271). Torsion spring (273), wherein the torsion spring (273) is sleeved on the outer surface of one end of the protective cover (272), and both ends are fixedly installed on one side of the protective cover (272) and one side of the locking block (24).

7. The anti-loosening fastener as described in claim 6, characterized in that: A sealing block (274) is fixedly installed on one side of the protective cover (272). The sealing block (274) is fixed on the side of the protective cover (272) near the guide hole (271), and the outer surface diameter is larger than the inner wall size of the guide hole (271).

8. The anti-loosening fastener as described in claim 6, characterized in that: An elastic rubber block (275) is fixedly installed on one side of the inner wall of the guide hole (271). The elastic rubber block (275) is fixedly installed at an angle on one end of the inner wall of the guide hole (271) near the protective cover (272).

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