Anti-loosening long-service-life automobile fastener

Abstract

The utility model discloses an anti-loosening long-life automobile fastener, which relates to the technical field of fasteners and comprises an end and a screw, the screw is mounted at the lower end of the end, a first cushion block is in threaded connection with the surface of the screw, a second cushion block is in threaded connection with the surface of the screw below the first cushion block, and an insertion block is arranged on the surface of the lower end of the first cushion block. And a rotating head is detachably installed at the upper end of the end, a protective cover is installed outside the rotating head and the end jointly, a connecting belt is arranged on one side of the surface of the protective cover, and a protective cap is installed at one end of the connecting belt. The first cushion block and the second cushion block are installed on the surface of the screw rod, the second cushion block is fixed when the end and the screw rod rotate, the screw rod drives the inserting block to keep a certain friction force to make contact with the inserting groove, the end and the screw rod are effectively prevented from moving and rotating, and the anti-loosening function is achieved.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, specifically to a long-life automotive fastener that prevents loosening. Background Technology

[0002] Fasteners are a wide range of mechanical parts used for fastening connections. They are used in a wide range of industries, including energy, electronics, electrical appliances, machinery, chemicals, metallurgy, mold making, hydraulics, and more. Various types of fasteners can be found on all kinds of machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemicals, meters, and supplies, making them the most widely used basic mechanical components.

[0003] Currently, existing fasteners often loosen during use due to insufficient preload or vibration, thus affecting their clamping effect. Furthermore, after tightening, the adjusting head of existing fasteners is exposed to the outside; twisting can damage the protective layer on the adjusting head's surface, leading to corrosion and affecting its service life. Therefore, this paper proposes a high-life, anti-loosening automotive fastener to solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a long-life automotive fastener that prevents loosening, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a long-life automotive fastener with anti-loosening features, comprising an end and a screw. The screw is installed at the lower end of the end, and a first pad is threadedly connected to the surface of the screw. A second pad is threadedly connected to the surface of the screw below the first pad. An insert is provided on the lower surface of the second pad, and a slot is provided on the upper end of the second pad. A rotating head is detachably installed on the upper end of the end. A protective cover is installed on both the rotating head and the outside of the end. A connecting strap is provided on one side of the surface of the protective cover, and a protective cap is installed at one end of the connecting strap.

[0006] Preferably, both the insert and the slot are frustum-shaped, and the inclination angle of the inner wall of the slot is greater than the inclination angle of the outer wall of the insert.

[0007] Preferably, a connecting shaft is installed at the lower end of the rotating head, a connecting plate is installed at the lower end of the connecting shaft, and six clamping plates are arranged in a circumferential array at the lower end of the connecting plate, with each of the six clamping plates contacting the end face of the head.

[0008] Preferably, the bottom end of the protective cover is provided with a through hole, the screw is located inside the through hole, and limit strips are installed on both sides of the inner wall of the protective cover. The limit strips are located on both sides of the connecting shaft between the rotating head and the end head.

[0009] Preferably, the upper end of the protective cover is provided with a rotating groove, and the lower end of the protective cap is provided with a connecting block, the size of the connecting block matching the size of the rotating groove.

[0010] Preferably, a limiting protrusion is provided on the lower part of the surface of the connecting block near the edge.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This anti-loosening, high-life automotive fastener uses two pads installed on the screw surface. When the end and screw rotate, the pad is fixed, and the screw drives the insert to maintain a certain friction and contact with the slot, effectively preventing the end and screw from moving or rotating, thus achieving the anti-loosening function.

[0013] 2. This anti-loosening, high-life automotive fastener features a rotating head installed at the top of the end. When a disassembly tool rotates the rotating head, it causes the end to rotate, effectively preventing the disassembly tool from directly contacting the end and damaging the protective layer on the end surface. At the same time, the installation of a protective cover and a protective cap provides overall protection for the end and the rotating head, preventing rainwater contact and rust corrosion, thus effectively extending the service life of the fastener. Attached Figure Description

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

[0015] Figure 2 This is an augmented cross-sectional view of the present invention;

[0016] Figure 3 This is a schematic diagram of the connection of the rotating head of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the protective cover of this utility model;

[0018] Figure 5 This utility model Figure 2 Enlarged view of point A in the middle.

[0019] In the diagram: 1. End; 2. Screw; 3. Pad 1; 4. Pad 2; 5. Insert; 6. Slot; 7. Rotating head; 8. Protective cover; 9. Connecting strap; 10. Protective cap; 11. Connecting shaft; 12. Connecting plate; 13. Clamping plate; 14. Through hole; 15. Limiting strip; 16. Rotating groove; 17. Connecting block; 18. Limiting protrusion. Detailed Implementation

[0020] 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.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] like Figures 1 to 5 As shown, this embodiment of the anti-loosening, high-life automotive fastener includes an end head 1 and a screw 2. The screw 2 is installed at the lower end of the end head 1. A first pad 3 is threaded onto the surface of the screw 2. A second pad 4 is threaded onto the surface of the screw 2 below the first pad 3. An insert 5 is provided on the lower surface of the first pad 3, and a slot 6 is provided on the upper end of the second pad 4. By rotating the end head 1, the screw 2 can be rotated and inserted into the screw hole, simultaneously fixing the second pad 4. As the end head 1 and the screw 2 continue to rotate, the insert 5 at the lower end of the first pad 3 is inserted into the slot 6 inside the second pad 4. Maintaining a certain frictional force and contacting the slot 6 effectively prevents accidental rotation of the end head 1 and the screw 2, achieving an anti-loosening function. A rotating head 7 is detachably installed on the upper end of the end head 1. Rotating the rotating head 7 can drive the end head 1 to rotate. A protective cover 8 is installed on the outside of the rotating head 7 and the end head 1. A connecting strap 9 is provided on one side of the surface of the protective cover 8. A protective cap 10 is installed at one end of the connecting strap 9. The protective cap 10 can be inserted into the inside of the protective cover 8, so that the protective cover 8 and the protective cap 10 protect the end head 1 and the rotating head 7, effectively preventing rainwater from contacting them and causing rust and corrosion.

[0023] Specifically, both the insert 5 and the slot 6 are frustum-shaped. The inclination angle of the inner wall of the slot 6 is greater than that of the outer wall of the insert 5. When the insert 5 on the first pad 3 is inserted into the slot 6 on the second pad 4, the first pad 3 contacts the second pad 4 with a certain friction force under the action of the end 1. The bottom end of the insert 5 will not contact the bottom end of the slot 6. That is, the greater the pressure applied by the end 1 to the first pad 3, the greater the friction between the first pad 3 and the second pad 4, and the better the anti-loosening effect.

[0024] Furthermore, a connecting shaft 11 is installed at the lower end of the rotating head 7, and a connecting plate 12 is installed at the lower end of the connecting shaft 11. Six clamping plates 13 are installed in a circumferential array at the lower end of the connecting plate 12. The six clamping plates 13 are in contact with the end face of the end head 1 respectively. The distribution position of the six clamping plates 13 is bolt-shaped, and protective pads can be set inside the clamping plates 13 to prevent the clamping plates 13 from damaging the protective layer on the surface of the end head 1. The shape and size of the rotating head 7 match the shape and size of the end head 1. When the rotating head 7 is rotated using a tool, the rotating head 7 rotates the end head 1 through the connecting shaft 11 and the connecting plate 12, effectively preventing the disassembly tool from making direct contact with the end head 1.

[0025] Furthermore, the bottom of the protective cover 8 is provided with a through hole 14, and the screw 2 is located inside the through hole 14. Limiting strips 15 are installed on both sides of the inner wall of the protective cover 8. The limiting strips 15 are located on both sides of the connecting shaft 11 between the rotating head 7 and the end head 1. The limiting strips 15 can be bent and are made of relatively soft material, which makes it easy to install the rotating head 7 inside the protective cover 8. The limiting strips 15 effectively prevent the rotating head 7 from falling out of the protective cover 8 and play a limiting role.

[0026] Furthermore, the upper end of the protective cover 8 is provided with a rotating groove 16, and the lower end of the protective cap 10 is provided with a connecting block 17. The size of the connecting block 17 matches the size of the rotating groove 16. The rotating groove 16 facilitates the insertion of disassembly tools and contact with the rotating head 7. The connecting block 17 enables the connection between the protective cap 10 and the protective cover 8.

[0027] Furthermore, a limiting protrusion 18 is provided on the lower part of the surface of the connecting block 17 near the edge. The setting of the limiting protrusion 18 effectively prevents the connecting block 17 from accidentally falling out of the rotating groove 16. Moreover, the protective cover 8, connecting strip 9, protective cap 10 and limiting protrusion 18 are made of rubber material, so the connecting block 17 has a certain degree of flexibility. The connecting block 17 and limiting protrusion 18 can be installed by squeezing.

[0028] The method of use in this embodiment is as follows: First, the screw 2 is passed through the through hole 14 at the bottom of the protective cover 8, so that the end 1 is located below the limiting strip 15 inside the protective cover 8. Then, the pad 3 is installed on the surface of the screw 2 by rotation, and the pad 3 is pressed against the protective cover 8. Then, the pad 4 is installed by rotation, so that the pad 4 and the pad 3 maintain a certain distance. Then, the limiting strip 15 inside the protective cover 8 is folded, and the multiple clamping plates 13 on the connecting plate 12 and the multiple end faces of the end 1 are in contact. The limiting strip 15 automatically returns to its original position and limits the connecting plate 12. During installation, a tool is used to rotate the screw 2. The head 7 rotates, and the rotating head 7 drives the clamping plate 13 on the connecting plate 12 to rotate through the connecting shaft 11. The clamping plate 13 screws the end 1, and at the same time drives the screw 2 to rotate. When it rotates to the appropriate depth of the screw hole, it fixes the second pad 4. As the end 1 and the screw 2 continue to rotate, the insert 5 at the lower end of the first pad 3 is inserted into the slot 6 inside the second pad 4. The insert 5 maintains a certain friction and contacts the slot 6, effectively preventing the end 1 and the screw 2 from rotating accidentally, and realizing the anti-loosening function. Then, the connecting block 17 on the protective cap 10 is inserted into the rotating groove 16 to realize overall protection and effectively improve the service life of the fastener.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A long-life automotive fastener with anti-loosening features, comprising an end (1) and a screw (2), wherein the screw (2) is mounted on the lower end of the end (1), characterized in that: The screw (2) is threaded with a pad block 1 (3), and a pad block 2 (4) is threaded below the pad block 1 (3) on the surface of the screw (2). A plug block (5) is provided on the lower end surface of the pad block 1 (3), and a slot (6) is provided on the upper end of the pad block 2 (4). A rotating head (7) is detachably installed on the upper end of the end (1). A protective cover (8) is installed on the outside of the rotating head (7) and the end (1). A connecting strap (9) is provided on one side of the surface of the protective cover (8), and a protective cap (10) is installed on one end of the connecting strap (9).

2. The anti-loosening, high-life automotive fastener according to claim 1, characterized in that: Both the insert (5) and the slot (6) are frustum-shaped, and the inclination angle of the inner wall of the slot (6) is greater than the inclination angle of the outer wall of the insert (5).

3. The anti-loosening, high-life automotive fastener according to claim 1, characterized in that: The lower end of the rotating head (7) is equipped with a connecting shaft (11), the lower end of the connecting shaft (11) is equipped with a connecting plate (12), and the lower end of the connecting plate (12) is equipped with six clamping plates (13) arranged in a circular array. The six clamping plates (13) are respectively in contact with the end face of the end head (1).

4. The anti-loosening, high-life automotive fastener according to claim 3, characterized in that: The bottom end of the protective cover (8) is provided with a through hole (14), the screw (2) is located inside the through hole (14), and limit strips (15) are installed on both sides of the inner wall of the protective cover (8). The limit strips (15) are located on both sides of the connecting shaft (11) between the rotating head (7) and the end (1).

5. The anti-loosening, high-life automotive fastener according to claim 1, characterized in that: The upper end of the protective cover (8) is provided with a rotating groove (16), and the lower end of the protective cap (10) is provided with a connecting block (17). The size of the connecting block (17) matches the size of the rotating groove (16).

6. The anti-loosening, high-life automotive fastener according to claim 5, characterized in that: A limiting protrusion (18) is provided on the lower part of the surface of the connecting block (17) near the edge.

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