High-strength fastener structure for automobile parts

Abstract

The high-strength fastener structure for the automobile parts comprises a screw rod and a nut, a friction mechanism for increasing friction force is arranged between the screw rod and the nut, a cavity is formed in the screw rod, a hole groove is formed in one side of the screw rod, a movable rod is arranged in the hole groove in a sliding mode, and the movable rod is connected with the screw rod. And an extension rod is fixedly arranged on one side of the movable rod. The screw penetrates into a fixing point, then the nut is connected to the outer side of the screw in a sleeved mode, after fixing is completed, part of the limiting hole is located in the nut, the movable rod is moved towards the inner side of the screw through a tool to drive the positioning rod to move along the interior of the hollow rod, and meanwhile the circular truncated cone block extrudes the limiting rod so that the limiting rod can move upwards along the limiting hole. And the rubber blocks located on the outer side of the nut move to the outer side of the screw rod, and the rubber blocks located on the inner side of the nut extrude the inner side wall of the nut, so that the installation tightness is improved through friction force, and the installation firmness is improved.

Description

Technical Field

[0001] This utility model relates to the field of fasteners, specifically a high-strength fastener structure for automotive parts. Background Technology

[0002] Automotive parts, also known as auto components, auto parts, or auto spare parts, refer to the components that make up the various units of a car and all consumable materials that serve the car. They are characterized by a wide variety of types, complex substitutes, complex identification systems, and rapid price fluctuations.

[0003] Automotive parts are secured with fasteners, typically bolts. However, existing fasteners are prone to loosening over time, leading to insecure fastening. Therefore, there is an urgent need for a device to solve this problem. Utility Model Content

[0004] The purpose of this invention is to provide a high-strength fastener structure for automotive parts to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-strength fastener structure for automotive parts, comprising a screw and a nut, wherein a friction mechanism for increasing friction is provided between the screw and the nut, a cavity is formed inside the screw, a slot is formed on one side of the screw, a movable rod is slidably disposed inside the slot, an extension rod is fixedly disposed on one side of the movable rod, a frustum block is fixedly disposed on one side of the extension rod, a positioning rod is fixedly disposed on one side of the frustum block, a hollow rod is fixedly disposed on one side inside the cavity, and one side of the positioning rod movably passes through the hollow rod, and a plurality of limiting holes are formed on the outer side of the screw. A limiting rod is slidably installed inside the limiting hole. A rubber block is glued and fixed to one side of the limiting rod. In use, the screw is inserted into the fixing point, and then the nut is sleeved on the outside of the screw. After fixing, part of the limiting hole is located inside the nut. Then, the movable rod is moved inward to the inside of the screw by a tool, which drives the positioning rod to move along the inside of the hollow rod. At the same time, the frustum block squeezes the limiting rod, causing the limiting rod to move upward along the limiting hole until part of the rubber block squeezes the inner wall of the nut. The rubber block located on the outside of the nut moves to the outside of the screw, and the rubber block located on the inside of the nut squeezes the inner wall of the nut. This improves the tightness and firmness of the installation through friction.

[0006] Preferably, the friction mechanism includes a ring and a protruding strip. The ring is sleeved on the outside of the screw, and the protruding strip is fixed on the outside of the ring. When the screw is installed, the ring is sleeved on the outside of the screw and closely attached to one side of the screw. In this way, after the screw is installed, the ring increases the friction between the screw and the contact surface, thereby improving the installation stability.

[0007] Preferably, the inner diameter of the slot is smaller than the inner diameter of the cavity.

[0008] Preferably, the outer diameter of the extension rod is smaller than the outer diameter of the movable rod.

[0009] Preferably, the outer surface of the frustum block is a smooth surface.

[0010] Preferably, there is friction between the limiting rod and the inner wall of the limiting hole, and one side of the limiting rod is in close contact with the outer side of the positioning rod.

[0011] Preferably, the limiting holes are symmetrically located on both sides of the screw.

[0012] Preferably, the protruding strips are symmetrically installed on both sides of the ring.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In use, the screw is inserted into the fixing point, and then the nut is fitted onto the outside of the screw. After fixing, part of the limiting hole is located inside the nut. Then, the movable rod is moved to the inside of the screw by a tool, which drives the positioning rod to move along the inside of the hollow rod. At the same time, the frustum block squeezes the limiting rod, so that the limiting rod moves upward along the limiting hole until part of the rubber block squeezes the inner wall of the nut. The rubber block located outside the nut moves to the outside of the screw, and the rubber block located inside the nut squeezes the inner wall of the nut, thereby improving the tightness and firmness of the installation through friction.

[0015] 2. In this invention, a ring is fitted onto the outside of the screw and pressed tightly against one side of the screw during installation. After the screw is installed, the ring increases the friction between the screw and the contact surface, thereby improving installation stability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a high-strength fastener for automotive parts according to the present invention;

[0017] Figure 2 This is a side view of a high-strength fastener structure for automotive parts according to the present invention;

[0018] Figure 3 This is a cross-sectional view of a high-strength fastener structure for automotive parts according to this utility model.

[0019] In the diagram: 1. Screw; 2. Nut; 3. Ring; 4. Protruding strip; 5. Cavity; 6. Groove; 7. Movable rod; 8. Extension rod; 9. Frustum block; 10. Positioning rod; 11. Hollow rod; 12. Limiting hole; 13. Limiting rod; 14. Rubber block. 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] Please see Figure 1-3 This utility model provides a high-strength fastener structure for automotive parts, including a screw 1 and a nut 2. A friction mechanism increases friction between the screw 1 and the nut 2. A cavity 5 is formed inside the screw 1. A slot 6 is formed on one side of the screw 1, with the inner diameter of the slot 6 being smaller than the inner diameter of the cavity 5. A movable rod 7 slides inside the slot 6. An extension rod 8 is welded to one side of the movable rod 7, with the outer diameter of the extension rod 8 being smaller than the outer diameter of the movable rod 7. A frustum block 9 is welded to one side of the extension rod 8, with a smooth outer surface. A positioning rod 10 is welded to one side of the frustum block 9. A hollow rod 11 is welded to one side inside the cavity 5. One side of the positioning rod 10 movably passes into the hollow rod 11. Several limiting holes 12 are formed on the outer side of the screw 1, symmetrically located on both sides of the screw 1. Limiting rods slide inside the limiting holes 12. 13. There is friction between the limiting rod 13 and the inner wall of the limiting hole 12. One side of the limiting rod 13 is tightly attached to the outside of the positioning rod 10. A rubber block 14 is glued and fixed to one side of the limiting rod 13. In use, the screw 1 is inserted into the fixing point, and then the nut 2 is fitted onto the outside of the screw 1. After fixing, part of the limiting hole 12 is located inside the nut 2. Then, the movable rod 7 is moved to the inside of the screw 1 by a tool, which drives the positioning rod 10 to move along the inside of the hollow rod 11. At the same time, the frustum block 9 squeezes the limiting rod 13, so that the limiting rod 13 moves upward along the limiting hole 12 until part of the rubber block 14 squeezes the inner wall of the nut 2. The rubber block 14 located outside the nut 2 moves to the outside of the screw 1, and the rubber block 14 located inside the nut 2 squeezes the inner wall of the nut 2. Thus, the installation tightness and installation firmness are improved by friction.

[0022] The friction mechanism includes a ring 3 and a protruding strip 4. The ring 3 is sleeved on the outside of the screw 1, and the protruding strip 4 is welded and fixed on the outside of the ring 3. The protruding strip 4 is symmetrically installed on both sides of the ring 3. When the screw 1 is installed, the ring 3 is sleeved on the outside of the screw 1 and closely attached to one side of the screw 1. In this way, after the screw 1 is installed, the friction between the screw 1 and the contact surface is increased by the ring 3, thereby improving the installation stability.

[0023] Working principle: During use, the screw 1 is inserted into the fixed point, and then the nut 2 is fitted onto the outside of the screw 1. After fixing, part of the limiting hole 12 is located inside the nut 2. Then, the movable rod 7 is moved inward to the inside of the screw 1 by a tool, which drives the positioning rod 10 to move along the inside of the hollow rod 11. At the same time, the frustum block 9 presses against the limiting rod 13, causing the limiting rod 13 to move upward along the limiting hole 12 until part of the rubber block 14 presses against the inner wall of the nut 2. The rubber block 14 located outside the nut 2 moves to the outside of the screw 1, and the rubber block 14 located inside the nut 2 presses against the inner wall of the nut 2, thereby improving the tightness and firmness of the installation through friction. When installing the screw 1, the ring 3 is fitted onto the outside of the screw 1 and pressed tightly against one side of the screw 1. After the screw 1 is installed, the ring 3 increases the friction between the screw 1 and the contact surface, thereby improving the installation stability.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-strength fastener structure for automotive parts, comprising a screw (1) and a nut (2), characterized in that: A friction mechanism to increase friction is provided between the screw (1) and the nut (2). A cavity (5) is provided inside the screw (1). A slot (6) is provided on one side of the screw (1). A movable rod (7) is slidably provided inside the slot (6). An extension rod (8) is fixedly provided on one side of the movable rod (7). A frustum block (9) is fixedly provided on one side of the extension rod (8). A positioning rod (10) is fixedly provided on one side of the frustum block (9). A hollow rod (11) is fixedly provided on one side of the cavity (5). One side of the positioning rod (10) is movably inserted into the hollow rod (11). Several limiting holes (12) are provided on the outside of the screw (1). A limiting rod (13) is slidably provided inside the limiting hole (12). A rubber block (14) is glued and fixedly provided on one side of the limiting rod (13).

2. The high-strength fastener structure for automotive parts according to claim 1, characterized in that: The friction mechanism includes a ring (3) and a protruding strip (4). The ring (3) is sleeved on the outside of the screw (1), and the protruding strip (4) is fixed on the outside of the ring (3).

3. The high-strength fastener structure for automotive parts according to claim 2, characterized in that: The inner diameter of the groove (6) is smaller than the inner diameter of the cavity (5).

4. The high-strength fastener structure for automotive parts according to claim 3, characterized in that: The outer diameter of the extension rod (8) is smaller than the outer diameter of the movable rod (7).

5. The high-strength fastener structure for automotive parts according to claim 4, characterized in that: The outer surface of the frustum block (9) is a smooth surface.

6. The high-strength fastener structure for automotive parts according to claim 5, characterized in that: There is friction between the limiting rod (13) and the inner wall of the limiting hole (12), and one side of the limiting rod (13) is tightly attached to the outside of the positioning rod (10).

7. A high-strength fastener structure for automotive parts according to claim 6, characterized in that: The limiting holes (12) are symmetrically opened on both sides of the screw (1).

8. The high-strength fastener structure for automotive parts according to claim 7, characterized in that: The protruding strip (4) is symmetrically installed on both sides of the ring (3).

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