Shockproof and anti-falling fastener for automobile

Abstract

The utility model discloses a shock-proof and anti-falling fastener for an automobile. The shock-proof and anti-falling fastener comprises a bolt, the right end of a stud of the bolt is in threaded connection with a nut, the right end of the stud of the bolt is movably sleeved with an inner hexagonal limiting sleeve, the nut is clamped in the inner hexagonal limiting sleeve, a limiting groove is formed in the outer arc face of the stud of the bolt, a third through hole is formed in the right end of the limiting groove, and a first through hole and a clamping groove are formed in the right end of the inner hexagonal limiting sleeve. An L-shaped bolt is inserted between the first through hole and the third through hole, the upper end of the L-shaped bolt is located in the clamping groove, an annular groove is formed in the right end of the inner hexagonal limiting sleeve, the annular groove is located in the middle of the clamping groove, a spring check ring is clamped in the annular groove, the L-shaped bolt is located in the spring check ring, and the annular groove is an annular groove of 300 degrees; according to the shockproof and anti-falling fastener for the automobile, rotation of the nut is limited through the inner hexagonal limiting sleeve, and more efficient shockproof and anti-falling effects are achieved through cooperation of the inner hexagonal limiting sleeve and the spring washer.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, specifically to an anti-vibration and anti-loosening fastener for automobiles. Background Technology

[0002] Fasteners are a wide range of mechanical parts used for fastening connections. Various types of fasteners can be found on all kinds of machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, meters, and supplies. They are characterized by a large variety of types and specifications, diverse performance and applications, and a high degree of standardization, serialization, and generalization.

[0003] During automobile assembly, most parts are fastened with fasteners. When a car is on the road, it vibrates due to road conditions and other factors. The alternating load generated by the vibration causes slight relative slippage (micromotion) between the nut and bolt, gradually destroying the friction and clamping force between the threads, leading to the nut loosening. Standard fasteners usually use spring washers for shock absorption. When compressed, the spring washer generates radial expansion force, forming an elastic rebound, thereby locking the threaded connection. However, under continuous pressure, the spring washer may undergo plastic deformation, resulting in a decrease in elasticity and limited shock absorption performance. Therefore, we propose a shock-absorbing and anti-loosening fastener for automobiles. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide an anti-vibration and anti-loosening fastener for automobiles. It restricts the rotation of the nut by using an internal hexagonal retainer and works with a spring washer to achieve more efficient anti-vibration and anti-loosening, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a shockproof and anti-detachment fastener for automobiles, comprising bolts;

[0006] Bolt: A nut is threaded to the right end of the stud. An internal hexagonal retaining sleeve is movably fitted on the right end of the stud. The nut is engaged inside the internal hexagonal retaining sleeve. A retaining groove is formed on the outer arc surface of the stud. A through hole three is formed on the right end of the retaining groove. A through hole one and a slot are formed on the right end of the internal hexagonal retaining sleeve. An L-shaped pin is inserted between through hole one and through hole three. The upper end of the L-shaped pin is located inside the slot. The rotation of the nut is restricted by the internal hexagonal retaining sleeve. In conjunction with the spring washer, more efficient shock absorption and anti-fall-off measures are achieved.

[0007] Furthermore, the right end of the internal hexagonal retaining sleeve is provided with an annular groove, which is located in the middle of the slot. A spring retaining ring is engaged inside the annular groove, and an L-shaped pin is located inside the spring retaining ring to prevent the L-shaped pin from falling off.

[0008] Furthermore, the annular groove is a 300° annular groove to prevent the spring retaining ring from rotating.

[0009] Furthermore, a spring washer and a washer are movably fitted on the left end of the stud of the bolt, with the spring washer on the left side of the washer. A spring washer and a washer are movably fitted on the right end of the stud of the bolt, with the spring washer on the right side of the washer. This provides initial shock absorption and prevents the bolt from falling off.

[0010] Furthermore, the inner side of the gasket is provided with a positioning plate, which is located inside the limiting groove. The right end of the positioning plate is provided with a through hole, through which an L-shaped pin passes to distribute the torque to the entire bolt.

[0011] Furthermore, the diameter of the outer arc surface of the positioning plate is smaller than the diameter of the bolt stud, which facilitates installation.

[0012] Furthermore, the left side of the gasket is provided with evenly distributed locking posts, the outer arc surface of the spring washer is provided with evenly distributed clearance grooves, and the side of the hexagonal head of the bolt is provided with evenly distributed connecting grooves. The locking posts are respectively engaged with the interior of the adjacent clearance grooves and connecting grooves on the left and right sides, so that the torque is transmitted to the bolt.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This automotive anti-vibration and anti-loosening fastener has the following advantages:

[0014] When the car vibrates while driving, the nut rotates slightly. The internal hexagonal retaining sleeve is limited by the L-shaped pin, thus preventing the nut from rotating slightly. At the same time, through the connection of the positioning plate, the internal hexagonal retaining sleeve and the bolt form a whole through the L-shaped pin. This makes the force that prevents the nut from rotating slightly act on the entire bolt, causing the bolt to tend to rotate synchronously with the nut. This disperses the force on the nut. In conjunction with the spring washer, it achieves more efficient shock absorption and anti-loosening. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the structure of the gasket of this utility model;

[0018] Figure 4 This is a schematic diagram of the internal hexagonal limiting sleeve of this utility model;

[0019] Figure 5 This is a schematic diagram of the bolt of this utility model.

[0020] In the diagram: 1 Bolt, 2 Nut, 3 Hex socket retaining sleeve, 4 Spring washer 1, 5 Washer 1, 6 Spring washer 2, 7 Washer 2, 8 Locking pin, 9 Positioning plate, 10 L-shaped pin, 11 Spring retaining ring, 12 Locking groove, 13 Annular groove, 14 Through hole 1, 15 Through hole 2, 16 Restricting groove, 17 Through hole 3, 18 Connecting groove. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-5 This embodiment provides a technical solution: an anti-vibration and anti-loosening fastener for automobiles, including bolt 1;

[0023] Bolt 1: A nut 2 is threaded onto the right end of its stud. An internal hexagonal retaining sleeve 3 is movably fitted onto the right end of the stud. The nut 2 is engaged with the internal hexagonal retaining sleeve 3. A retaining groove 16 is formed on the outer arc surface of the stud. A through hole 17 is formed at the right end of the retaining groove 16. A through hole 14 and a slot 12 are formed at the right end of the internal hexagonal retaining sleeve 3. An L-shaped pin 10 is inserted between the through hole 14 and the through hole 17. The upper end of the L-shaped pin 10 is located inside the slot 12. An annular groove 13 is formed at the right end of the internal hexagonal retaining sleeve 3. In the middle of the slot 12, a spring retaining ring 11 is engaged inside the annular groove 13. An L-shaped pin 10 is located inside the spring retaining ring 11. The annular groove 13 is a 300° annular groove. A spring washer 4 and a washer 5 are movably fitted on the left end of the stud of the bolt 1. The spring washer 4 is located to the left of the washer 5. A spring washer 6 and a washer 7 are movably fitted on the right end of the stud of the bolt 1. The spring washer 6 is located to the right of the washer 7. A positioning plate 9 is provided inside the washer 5. The positioning plate 9 is located inside the limiting groove 16. The right end of the positioning plate 9 has an opening. Through hole 15, L-shaped pin 10 passes through through hole 15. The diameter of the outer arc surface of positioning plate 9 is smaller than the diameter of the stud of bolt 1. The left side of washer 5 is provided with evenly distributed locking pins 8. The outer arc surface of spring washer 4 is provided with evenly distributed clearance grooves. The side of the hexagonal head of bolt 1 is provided with evenly distributed connecting grooves 18. The locking pins 8 are respectively locked into the interior of the left and right adjacent clearance grooves and connecting grooves 18. First, spring washer 4 and washer 5 are sleeved on the outside of the stud of bolt 1. Positioning plate 9 is located inside the limiting groove 16. The diameter of the outer arc surface of positioning plate 9 is smaller than the diameter of the stud of bolt 1. The diameter is smaller than that of the stud of bolt 1, which facilitates the fitting of washer 7, spring washer 6 and nut 2. Then, bolt 1 is passed through the position on the car that needs to be tightened, and washer 7, spring washer 6 and nut 2 are fitted in sequence. Nut 2 is tightened, and internal hexagonal retaining sleeve 3 is fitted. Nut 2 is engaged inside internal hexagonal retaining sleeve 3. Then, L-shaped pin 10 is inserted. The upper end of L-shaped pin 10 is located inside slot 12. Finally, spring retaining ring 11 is engaged inside annular groove 13. Annular groove 13 is a 300° annular groove to prevent spring retaining ring 11 from rotating.

[0024] The working principle of the anti-vibration and anti-detachment fastener for automobiles provided by this utility model is as follows: First, spring washer 4 and washer 5 are fitted onto the outside of the stud of bolt 1. Positioning plate 9 is located inside the limiting groove 16. The diameter of the outer arc surface of positioning plate 9 is smaller than the diameter of the stud of bolt 1, which facilitates the fitting of washer 7, spring washer 6 and nut 2. Then, bolt 1 is passed through the position of automobile that needs to be fastened. Then, washer 7, spring washer 6 and nut 2 are fitted in sequence. Nut 2 is tightened. Then, internal hexagonal limiting sleeve 3 is fitted. Nut 2 is engaged inside internal hexagonal limiting sleeve 3. Then, L-shaped pin 10 is inserted. The upper end of L-shaped pin 10 is located inside the slot 12. Finally, spring retainer 11 is engaged with the annular ring. Inside the groove 13, the annular groove 13 is a 300° annular groove to prevent the spring retainer ring 11 from rotating. When the car vibrates, the alternating load generated by the vibration will cause a slight relative sliding between the nut 2 and the bolt 1, gradually destroying the friction and clamping force between the threads. The nut 2 will have a tendency to rotate due to vibration and will be transmitted to the internal hexagonal retaining sleeve 3. The L-shaped pin 10 prevents the internal hexagonal retaining sleeve 3 from rotating. At the same time, through the transmission of the positioning plate 9, the torque that causes the nut 2 to rotate is transferred to the washer 5. The washer 5 drives the hexagonal head of the bolt 1 to rotate synchronously, so that the torque that causes the nut 2 to rotate acts on the nut 2 and the bolt 1, realizing shockproof and anti-loosening.

[0025] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A shock-absorbing and anti-falling fastener for a vehicle, characterized by: The bolt (1) comprises a screw rod (1) and a hexagonal head (2) connected to the right end of the screw rod (1). The bolt (1) comprises a screw rod (1) and a hexagonal head (2) connected to the right end of the screw rod (1).

2. The shock-absorbing and anti-falling fastener for a vehicle according to claim 1, characterized in that: The right end of the inner hexagonal limiting sleeve (3) is provided with an annular groove (13), and the annular groove (13) is located in the middle of the clamping groove (12).

3. The shock-absorbing and anti-falling fastener for a vehicle according to claim 2, characterized in that: The annular groove (13) is a 300° annular groove.

4. The shock-absorbing and anti-falling fastener for a vehicle of claim 1, wherein: The left end of the screw rod of the bolt (1) is movably sleeved with a spring washer (4) and a gasket (5), and the spring washer (4) is located on the left side of the gasket (5).

5. The shock-absorbing and anti-falling fastener for a vehicle according to claim 4, characterized in that: The right end of the screw rod of the bolt (1) is movably sleeved with a spring washer (6) and a gasket (7), and the spring washer (6) is located on the right side of the gasket (7).

6. The shock-absorbing and anti-falling fastener for a vehicle of claim 5, wherein: The inner side of the gasket (5) is provided with a positioning plate (9), and the positioning plate (9) is located in the limiting groove (16).

7. The shock-absorbing and anti-falling fastener for a vehicle of claim 4, wherein: The outer arc surface of the positioning plate (9) has a diameter smaller than that of the screw rod of the bolt (1). The left side of the gasket (5) is provided with evenly distributed clamping columns (8), the outer arc surface of the spring washer (4) is provided with evenly distributed avoidance grooves, and the side surface of the hexagonal head of the bolt (1) is provided with evenly distributed connecting grooves (18). The clamping columns (8) are respectively clamped in the inner sides of the left and right adjacent avoidance grooves and connecting grooves (18).

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