Anti-loosening bolt fastener

Abstract

The utility model relates to the technical field of bolt fasteners, in particular to an anti-loosening bolt fastener which comprises a threaded rod, a nut and an auxiliary assembly, the nut is fixedly connected with the upper surface of the threaded rod, the surface of the threaded rod is in threaded connection with the nut, and the auxiliary assembly is arranged on the upper surface of the nut; the auxiliary assembly comprises a guide unit, the guide unit comprises a connecting ring, the connecting ring is fixedly connected with the upper surface of the nut, the upper surface of the connecting ring is fixedly connected with a limiting sleeve, a guide hole is formed in the arc surface of the limiting sleeve, and the inner wall, located in the guide hole, of the limiting sleeve is slidably connected with a connecting column. And a through hole is formed in the surface of the connecting ring. According to the bolt fastener, the auxiliary assembly is arranged, so that the stability of the bolt fastener is improved, the problem that looseness is difficult to prevent when the bolt fastener is limited through a spring and a steel ball is solved, and the locking effect of the bolt fastener is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt fasteners, in particular to an anti-loosening bolt fastener. Background Art

[0002] Bolt fasteners are an important connecting element widely used in many fields such as mechanical manufacturing and construction engineering. They are usually composed of a head and a screw. They are made of various materials, including carbon steel, alloy steel, stainless steel, etc. Bolt fasteners cooperate with nuts and use the screwing action of threads to firmly connect different components together. They have the advantages of simple structure, easy installation, and reliable connection. In actual applications, according to different usage scenarios and requirements, bolt fasteners have various specifications and models, such as hexagonal bolts, stud bolts, anchor bolts, etc. At the same time, in order to ensure the stability and safety of the connection, bolt fasteners need to meet certain performance requirements such as strength and hardness.

[0003] Existing technologies include a utility model with publication number CN203570813U, which discloses an anti-loosening bolt fastener. The patent uses a screw head, a cross slot, a screw rod, a rubber washer, a through hole, a spring, and a steel ball. The upper end surface of the screw head is provided with a cross slot; a rubber washer is provided between the screw head and the screw rod; a through hole is provided above the screw rod, and a spring is provided in the through hole. Steel balls are provided at both ends of the spring. Since the spring and steel ball are provided on the screw rod, the spring and steel ball are locked to the object when it is installed or fastened to the object, making the bolt less likely to loosen, improving practicality and safety, and solving the problem that bolts are prone to loosening after being installed or fastened to an object for a long time, and in serious cases, they may fall off, causing safety hazards.

[0004] In the process of locking a workpiece with the help of a bolt fastener, there are existing bolt fasteners such as the above-mentioned ones, in which a spring and steel ball structure for limiting is set inside the bolt body. However, due to the limited volume of the bolt body, the strength of the spring that can be installed is poor. When the bolt only relies on the spring and steel ball for limiting, since the outer surface of the steel ball is round, when the bolt is subjected to external force, the bolt will apply force to the steel ball. Under the action of the bolt, the steel ball will cooperate with the installed slot to squeeze the spring, which will then lead to the problem that the designed limiting structure has a poor limiting effect on the bolt. Summary of the Invention

[0005] The purpose of the utility model is to solve the problem in the prior art that when the bolt is subjected to external force, the bolt will apply force to the steel ball, and the steel ball will cooperate with the installed slot to squeeze the spring under the action of the bolt, thereby resulting in a poor restraining effect of the designed restraining structure on the bolt, and to propose an anti-loosening bolt fastener.

[0006] In order to achieve the above-mentioned object, the utility model adopts the following technical solution: an anti-loosening bolt fastener, comprising a threaded rod, a nut and an auxiliary component, wherein the nut is fixedly connected to the upper surface of the threaded rod, the surface of the threaded rod is threadedly connected to the nut, and the auxiliary component is arranged on the upper surface of the nut;

[0007] The auxiliary component includes a guide unit, and the guide unit includes a connecting ring, the connecting ring is fixedly connected to the upper surface of the nut, the upper surface of the connecting ring is fixedly connected to a limiting sleeve, the arc surface of the limiting sleeve is provided with a guide hole, the limiting sleeve is located on the inner wall of the guide hole and is slidably connected to a connecting column, the surface of the connecting ring is provided with a through hole, and the connecting ring is located on the inner wall of the through hole and is slidably connected to a guide rod;

[0008] The auxiliary component also includes a locking unit, which includes a lower assembly ring, which is slidingly connected to the surface of the connecting ring, a compression spring fixedly connected to the lower surface of the lower assembly ring, and the compression spring is fixedly connected to the upper surface of the connecting ring. The upper surface of the lower assembly ring is fixedly connected to a positive latch tooth, and the surface of the threaded rod is sleeved with a T-shaped frame, and the outer circumference of the T-shaped frame is fixedly connected to the upper assembly ring, and the lower surface of the upper assembly ring is fixedly connected to a negative latch tooth, and the positive latch tooth is engaged with the tooth groove of the negative latch tooth.

[0009] Preferably, a receiving groove is provided on the upper surface of the nut, and the guide rod is slidably connected to the inner wall of the receiving groove. The lower end of the guide rod can be received through the receiving groove, and it is ensured that the guide rod can move downward under the action of external force.

[0010] Preferably, the connecting ring is socketed with the surface of the threaded rod, the limiting sleeve is socketed with the surface of the threaded rod, the number of the guide holes is three, and the three guide holes are arranged in a circular array about the connecting sleeve. The movement direction of the lower assembly plate can be guided by the cooperation between the guide holes and the connecting column.

[0011] Preferably, the connecting column is fixedly connected to the inner circumference of the lower assembly ring. There are three connecting columns, which are arranged in a circular array about the lower assembly ring. The position of the lower assembly ring can be constrained by the connecting columns to ensure that the lower assembly ring can only move up and down when subjected to force.

[0012] Preferably, the number of the compression springs is six, and the six compression springs are arranged in a circular array about the lower assembly ring. The compression springs are socketed with the surface of the guide rod. The position of the lower assembly ring can be constrained by the compression springs to ensure the stability of the lower assembly ring in a static state.

[0013] Preferably, there are multiple positive teeth, and the multiple positive teeth are arranged in a circular array about the lower assembly ring. The number of the negative teeth matches the positive teeth. Through the cooperation of the positive teeth and the negative teeth, the position of the nut can be limited with the assistance of the upper assembly plate and the lower assembly plate.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are:

[0015] In the utility model, an auxiliary component is provided. Before installing the bolt fastener, the upper assembly ring equipped with the counter-grip is fixed on the T-shaped frame, and the T-shaped frame is welded to the fastening position of the workpiece so that the T-shaped frame is connected with the slot hole on the surface of the workpiece. Then the threaded rod is inserted into the slot hole. The bolt bolt is limited by the slot hole so that the threaded rod can only move in the horizontal direction. The threaded rod passes through the slot hole and is inserted into the T-shaped frame. When the threaded rod is completely inserted into the slot hole, the nut is screwed onto the threaded rod. During the rotation process, the nut cooperates with the connecting ring and the compression spring to push the lower assembly ring and the positive clamping teeth. The positive clamping teeth approach the counter-clamping teeth during the movement. When the positive clamping teeth contact the counter-clamping teeth, the positive clamping teeth squeeze the lower assembly ring under the action of the counter-clamping teeth, and the lower assembly ring squeezes the compression spring. The spring and the compression spring are squeezed and deformed, and the lower assembly ring moves downward under the guidance of the connecting column and the guide rod. When the nut is fully tightened, the positive tooth stops rotating and loses the force applied by the reverse tooth. At the same time, the positive tooth loses the pressure applied to the lower assembly ring and the compression spring, and the compression spring loses pressure and rebounds, and cooperates with the lower assembly ring to push the positive tooth into the tooth of the reverse tooth. When the positive tooth is inserted into the tooth of the reverse tooth, it can cooperate with the lower assembly ring, the connecting column, the guide rod connecting ring and the limiting sleeve to limit the position of the nut. By setting the auxiliary components, the stability of the bolt fastener is improved, thereby reducing the problem of difficulty in preventing loosening when the bolt fastener relies on the spring and steel ball for limiting, and further improving the locking effect of the bolt fastener. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model provides a three-dimensional structural diagram of an anti-loosening bolt fastener;

[0017] Figure 2 The utility model provides a bottom view structural diagram of an anti-loosening bolt fastener;

[0018] Figure 3 The utility model provides a schematic structural diagram of an auxiliary component of an anti-loosening bolt fastener;

[0019] Figure 4 The utility model provides a bottom view of the structure of an auxiliary component of an anti-loosening bolt fastener;

[0020] Figure 5 The utility model proposes a method for preventing loosening bolt fasteners. Figure 4 Schematic diagram of the structure at point A in the middle.

[0021] Legend:

[0022] 1. Threaded rod; 2. Nut; 3. Nut; 4. Auxiliary component; 41. Guide unit; 411. Connecting ring; 412. Limit sleeve; 413. Guide hole; 414. Connecting column; 415. Guide rod; 416. Storage groove; 42. Locking unit; 421. Lower assembly ring; 422. Compression spring; 423. Positive latching tooth; 424. T-shaped frame; 425. Upper assembly ring; 426. Reverse latching tooth. DETAILED DESCRIPTION

[0023] See also Figure 1-Figure 5 The utility model provides a technical solution: an anti-loosening bolt fastener, including a threaded rod 1, a nut 2 and an auxiliary component 4, the nut 2 is fixedly connected to the upper surface of the threaded rod 1, the surface of the threaded rod 1 is threadedly connected with a nut 3, and the auxiliary component 4 is arranged on the upper surface of the nut 3.

[0024] In this embodiment, the auxiliary component 4 includes a guide unit 41, which includes a connecting ring 411. The connecting ring 411 is fixedly connected to the upper surface of the nut 3. The upper surface of the connecting ring 411 is fixedly connected to a limiting sleeve 412. The arc surface of the limiting sleeve 412 is provided with a guide hole 413. The limiting sleeve is located on the inner wall of the guide hole 413 and is slidably connected to a connecting column 414. The surface of the connecting ring 411 is provided with a through hole. The connecting ring 411 is located on the inner wall of the through hole and is slidably connected to a guide rod 415.

[0025] The auxiliary component 4 also includes a locking unit 42, which includes a lower assembly ring 421, which is slidingly connected to the surface of the connecting ring 411, and a compression spring 422 is fixedly connected to the lower surface of the lower assembly ring 421, and the compression spring 422 is fixedly connected to the upper surface of the connecting ring 411. The upper surface of the lower assembly ring 421 is fixedly connected to a positive latch tooth 423, and the surface of the threaded rod 1 is sleeved with a T-shaped frame 424, and the outer circumference of the T-shaped frame 424 is fixedly connected to the upper assembly ring 425, and the lower surface of the upper assembly ring 425 is fixedly connected to a negative latch tooth 426, and the positive latch tooth 423 is engaged with the tooth groove of the negative latch tooth 426.

[0026] Specifically, a receiving groove 416 is provided on the upper surface of the nut 3, and the guide rod 415 is slidably connected to the inner wall of the receiving groove 416. The receiving groove 416 can receive the lower end of the guide rod 415 and ensure that the guide rod 415 can move downward under the action of external force.

[0027] Specifically, the connecting ring 411 is sleeved with the surface of the threaded rod 1 , the limiting sleeve 412 is sleeved with the surface of the threaded rod 1 , and there are three guide holes 413 , which are arranged in a circular array about the connecting sleeve.

[0028] In this embodiment, the movement direction of the lower assembly plate can be guided by the cooperation between the guide hole 413 and the connecting column 414 .

[0029] Specifically, the connecting column 414 is fixedly connected to the inner circumference of the lower assembly ring 421. There are three connecting columns 414, and the three connecting columns 414 are arranged in a circular array about the lower assembly ring 421. The position of the lower assembly ring 421 can be constrained by the connecting columns 414 to ensure that the lower assembly ring 421 can only move up and down when subjected to force.

[0030] In this embodiment, the number of the compression springs 422 is six, and the six compression springs 422 are arranged in a circular array about the lower assembly ring 421 . The compression springs 422 are sleeved with the surface of the guide rod 415 .

[0031] In this embodiment, the position of the lower assembly ring can be constrained by the compression spring 422 to ensure the stability of the lower assembly ring 421 in a static state.

[0032] Specifically, there are multiple positive latch teeth 423, and the multiple positive latch teeth 423 are arranged in a circular array about the lower assembly ring 421. The number of negative latch teeth 426 matches the positive latch teeth 423. Through the cooperation of the positive latch teeth 423 and the negative latch teeth 426, the position of the nut 3 can be restricted with the assistance of the upper assembly plate and the lower assembly plate.

[0033] The screw threaded rod 1 is inserted into the slotted hole, and the bolt is limited by the slotted hole, so that the threaded rod 1 can only move in the horizontal direction. The threaded rod 1 passes through the slotted hole and is inserted into the T-shaped frame 424. When the threaded rod 1 is fully inserted into the slotted hole, the nut 3 is screwed onto the threaded rod 1. During the rotation, the nut 3 cooperates with the connecting ring 411 and the compression spring 422 to push the lower assembly ring 421 and the positive locking tooth 423. The positive locking tooth 423 approaches the counter-locking tooth 426 during the movement. When the positive locking tooth 423 contacts the counter-locking tooth 426, the positive locking tooth 423 squeezes the lower assembly ring 421 under the action of the counter-locking tooth 426, and the lower assembly ring 421 squeezes the compression spring 422. The compression spring When the nut 3 is fully tightened, the positive locking tooth 423 stops rotating and loses the force exerted by the reverse locking tooth 426. At the same time, the positive locking tooth 423 loses the pressure exerted on the lower assembly ring 421 and the compression spring 422. The compression spring 422 loses the pressure and rebounds, and cooperates with the lower assembly ring 421 to push the positive locking tooth 423 into the locking tooth of the reverse locking tooth 426. When the positive locking tooth 423 is inserted into the locking tooth of the reverse locking tooth 426, it can cooperate with the lower assembly ring 421, the connecting column 414, the guide rod 415 connecting ring 411 and the limiting sleeve 412 to limit the position of the nut 3. By providing the auxiliary component 4, the stability of the bolt fastener is improved, thereby reducing the problem of the bolt fastener being difficult to prevent loosening when relying on the spring and steel ball for limiting, and further improving the locking effect of the bolt fastener.

Claims

1. An anti-loosening bolt fastener, comprising a threaded rod (1), a nut (2) and an auxiliary component (4), characterized in that: The nut (2) is fixedly connected to the upper surface of the threaded rod (1), the surface of the threaded rod (1) is threadedly connected to a nut (3), and the auxiliary component (4) is arranged on the upper surface of the nut (3); The auxiliary component (4) includes a guide unit (41), and the guide unit (41) includes a connecting ring (411), the connecting ring (411) is fixedly connected to the upper surface of the nut (3), the upper surface of the connecting ring (411) is fixedly connected to a limiting sleeve (412), the arc surface of the limiting sleeve (412) is provided with a guide hole (413), the limiting sleeve is located on the inner wall of the guide hole (413) and is slidably connected to a connecting column (414), the surface of the connecting ring (411) is provided with a through hole, and the connecting ring (411) is located on the inner wall of the through hole and is slidably connected to a guide rod (415); The auxiliary component (4) further comprises a locking unit (42), the locking unit (42) comprising a lower assembly ring (421), the lower assembly ring (421) being slidably connected to the surface of the connecting ring (411), the lower surface of the lower assembly ring (421) being fixedly connected to a compression spring (422), the compression spring (422) being fixedly connected to the upper surface of the connecting ring (411), the upper surface of the lower assembly ring (421) being fixedly connected to a positive latching tooth (423), the surface of the threaded rod (1) being sleeved with a T-shaped frame (424), the outer circumference of the T-shaped frame (424) being fixedly connected to an upper assembly ring (425), the lower surface of the upper assembly ring (425) being fixedly connected to a negative latching tooth (426), the positive latching tooth (423) being meshed with the tooth groove of the negative latching tooth (426).

2. The anti-loosening bolt fastener according to claim 1, characterized in that: A receiving groove (416) is provided on the upper surface of the nut (3), and the guide rod (415) is slidably connected to the inner wall of the receiving groove (416).

3. The anti-loosening bolt fastener according to claim 1, characterized in that: The connecting ring (411) is sleeved with the surface of the threaded rod (1), the limiting sleeve (412) is sleeved with the surface of the threaded rod (1), the number of the guide holes (413) is three, and the three guide holes (413) are arranged in a circular array with respect to the connecting sleeve.

4. The anti-loosening bolt fastener according to claim 1, characterized in that: The connecting posts (414) are fixedly connected to the inner circumference of the lower assembly ring (421), and the number of the connecting posts (414) is three. The three connecting posts (414) are arranged in a circular array with respect to the lower assembly ring (421).

5. The anti-loosening bolt fastener according to claim 1, characterized in that: The number of the compression springs (422) is six, and the six compression springs (422) are arranged in a circular array about the lower assembly ring (421), and the compression springs (422) are sleeved with the surface of the guide rod (415).

6. The anti-loosening bolt fastener according to claim 1, characterized in that: The number of the positive latch teeth (423) is multiple, and the multiple positive latch teeth (423) are arranged in a circumferential array about the lower assembly ring (421), and the number of the negative latch teeth (426) matches the number of the positive latch teeth (423).

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