Anti-falling cotter pin at top end of bolt for automobile

Abstract

The utility model discloses an automobile bolt top end anti-falling cotter pin, which relates to the technical field of cotter pins, and comprises an upper clamping pin, a lower clamping pin, a cotter pin clamping part and a cotter pin head, one end of the cotter pin head is fixed at one end of the upper clamping pin, the other end of the cotter pin head is connected with one end of the lower clamping pin, the cotter pin clamping part is of a U-shaped structure, and the cotter pin clamping part is of a U-shaped structure. The cotter pin clamping part is connected with the lower clamping foot, a cotter pin fixing clamping position is formed between the U-shaped inner wall of the cotter pin clamping part and the upper clamping foot in an abutting mode, the head of the cotter pin is in a curled spring shape, and the cotter pin clamping part is wrapped with a wear-resisting strengthening net. And a powerful guarantee is provided for the safety and reliability of the automobile.

Description

Technical Field

[0001] The utility model relates to the technical field of cotter pins, in particular to a cotter pin for preventing the top end of a bolt from falling off for automobiles. Background Art

[0002] A large number of threaded connections are required between the various components of a car to ensure the stability of the overall structure. In addition to bearing static loads, it is also necessary to resist external factors such as vibration and impact during dynamic driving. Therefore, maintaining the stability of threaded connections is crucial to the safety and reliability of the car. Traditional bolt fixing methods often rely on thread locking or gaskets to increase friction, but under certain extreme working conditions, such as vibration, impact or long-term use, these fixing methods may become loose or even fall off, causing component separation, thereby threatening the safety of the driver and passengers. It is necessary to improve the anti-falling performance and stability of automobile bolts, and propose a reliable and efficient fixing method to ensure that the bolts can remain stable under various working conditions. In summary, based on improving the anti-falling performance and stability of automobile bolts, it is proposed to use an anti-falling cotter pin at the top of the automobile bolt to solve the above problems. Utility Model Content

[0003] The utility model aims to solve the technical problem of preventing a cotter pin from falling off at the top end of a bolt for automobiles at least to a certain extent. To this end, the utility model proposes a cotter pin preventing a cotter pin from falling off at the top end of a bolt for automobiles.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a cotter pin for preventing the top end of a bolt for automobiles from falling off, the cotter pin for preventing the top end of a bolt for automobiles specifically includes an upper clamping foot, a lower clamping foot, a cotter pin clamping part and a cotter pin head, one end of the cotter pin head is fixed to one end of the upper clamping foot, the other end of the cotter pin head is connected to one end of the lower clamping foot, the cotter pin clamping part is a U-shaped structure, the cotter pin clamping part is connected to the lower clamping foot, and the U-shaped inner wall of the cotter pin clamping part abuts the clamping foot on the wall to form a cotter pin fixing position, the cotter pin head is in the shape of a curled spring, and a wear-resistant reinforcement net is wrapped on the cotter pin clamping part.

[0005] In a preferred embodiment of the present invention, a vertical slot is provided at the end of the upper clamping leg.

[0006] In a preferred embodiment of the present invention, a corrugated boss is provided at the abutment position between the upper clamping foot and the cotter pin clamping portion, and an inner groove connected to the corrugated boss is provided inside the cotter pin clamping portion.

[0007] In a preferred embodiment of the present invention, the wear-resistant reinforcement mesh includes reinforcement fiber ribs and metal wire ribs, and the reinforcement fiber ribs and metal wire ribs are interwoven and wrapped around the clamping portion of the cotter pin.

[0008] In a preferred embodiment of the present invention, a reinforcement sleeve is provided on the side where the upper clamping foot is connected to the cotter pin head.

[0009] In a preferred embodiment of the present invention, a locking piece is provided at the end of the clamping portion of the cotter pin.

[0010] The beneficial effects of the present invention are as follows: the upper clamping foot passes through the top of the automobile bolt, the lower clamping foot fits on the outer wall of the automobile bolt, and the fixed position formed by the U-shaped structure of the cotter pin clamping part, and the curled spring-like design of the cotter pin head, so that the cotter pin is locked on the automobile bolt, effectively preventing the bolt from falling off, and improving the safety and reliability of the automobile; the corrugated boss and the corresponding inner groove provided at the abutment between the upper clamping foot and the cotter pin clamping part enhance the connection strength; the locking piece provided at the end of the cotter pin clamping part ensures that the cotter pin will not accidentally loosen, further improving the stability of the automobile bolt. In summary, the anti-falling cotter pin at the top of the automobile bolt of the present invention enhances the anti-falling performance and stability, and provides a strong guarantee for the safety and reliability of the automobile. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the structure of the utility model from a top view;

[0013] Figure 3 This is a side view of the structure of the utility model;

[0014] In the figure: 1-upper clamping foot, 2-lower clamping foot, 3-cotter pin clamping part, 4-cotter pin head, 5-wear-resistant reinforcement mesh, 6-vertical groove, 7-corrugated boss, 8-inner groove, 9-reinforced fiber rib, 10-metal wire rib, 11-reinforcement sleeve, 12-locking piece. DETAILED DESCRIPTION

[0015] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0016] like Figure 1 and Figure 2The above diagram shows a cotter pin for preventing the top end of a bolt from falling off for automobiles. The cotter pin for preventing the top end of a bolt from falling off for automobiles specifically comprises an upper clamping foot 1, a lower clamping foot 2, a cotter pin clamping portion 3 and a cotter pin head 4. One end of the cotter pin head 4 is fixed to one end of the upper clamping foot 1, and the other end of the cotter pin head 4 is connected to one end of the lower clamping foot 2. The cotter pin clamping portion 3 is a U-shaped structure. The cotter pin clamping portion 3 is connected to the lower clamping foot 2, and the U-shaped inner wall of the cotter pin clamping portion 3 abuts against the upper clamping foot 1 to form a cotter pin fixed position. The cotter pin head 4 is in the shape of a curled spring. A wear-resistant reinforcement net 5 is wrapped on the cotter pin clamping portion 3. The upper clamping foot 1 passes through the top end of the bolt for automobiles, and the lower clamping foot The foot 2 is opposite to the upper clamping foot 1, and they jointly clamp the bolt to form a lock; the lower clamping foot 2 does not penetrate the automobile bolt, but fits on the outer wall of the automobile bolt and is directly connected to the cotter pin head 4; the cotter pin clamping part 3 is a U-shaped structure, which is used to clamp and fix the upper clamping foot 1. The U shape can adapt to bolts of different sizes. The wrapped wear-resistant reinforcement net 5 improves its wear resistance and reduces the risk of wear due to long-term use; the cotter pin head 4 is connected to the upper clamping foot 1 and the lower clamping foot 2 to form a curled spring shape, which can provide a certain amount of deformation during installation, making it easy to stretch and separate the upper clamping foot 1 and the lower clamping foot 2, so that the upper clamping foot 1 penetrates the automobile bolt and the lower clamping foot 2 is clamped on the outer wall of the automobile bolt.

[0017] like Figure 1 As shown, further, a vertical slot 6 is provided at the end of the upper clamping foot 1. When the bolt is clamped, the vertical slot 6 can provide more bite points, thereby enhancing the friction between the upper clamping foot 1 and the fixed component. The vertical slot 6 has elastic deformation ability and can be pried open with a tool to prevent slipping after installing the bolt that penetrates the car.

[0018] like Figure 3 As shown, further, a corrugated boss 7 is provided at the joint between the upper clamping foot 1 and the cotter pin clamping part 3, and an inner groove 8 connected to the corrugated boss 7 is provided inside the cotter pin clamping part 3; the corrugated boss 7 increases the contact area and forms a plurality of bite points, and the inner groove 8 cooperates with the corrugated boss 7 to prevent loosening caused by vibration or external force, thereby enhancing the friction between the two, and the corrugated boss 7 adapts to the size difference and deformation between the upper clamping foot 1 and the cotter pin clamping part 3.

[0019] like Figure 2 As shown, further, the wear-resistant reinforcement mesh 5 includes reinforcing fiber ribs 9 and metal wire ribs 10, which are interwoven and wrapped around the cotter pin clamping portion 3. The reinforcing fiber ribs 9 are made of carbon fiber to resist friction and scratching, and the metal wire ribs 10 provide strength and rigidity. The two are interwoven together to enhance the wear resistance of the cotter pin clamping portion 3 and its surrounding areas.

[0020] like Figure 1As shown, further, a reinforcement sleeve 11 is provided on the side where the upper clamping foot 1 is connected to the cotter pin head 4, and the reinforcement sleeve 11 is provided on the side where the upper clamping foot 2 is connected to the cotter pin head 4 to enhance the strength of the connection and prevent damage due to long-term use.

[0021] like Figure 1 As shown, further, a locking piece 12 is provided at the end of the cotter pin clamping portion 3, and the locking piece 12 is provided at the end of the cotter pin clamping portion 3 and is buckled at the connection between the cotter pin clamping portion 3 and the lower clamping foot 2. The locking piece 12 can ensure that the cotter pin will not be accidentally loosened during vibration.

[0022] In the specific working process of the novel anti-falling cotter pin at the top of the automobile bolt, the position of the automobile bolt is confirmed to ensure the opening of the cotter pin. Since the cotter pin head 4 is in the shape of a curled spring, the upper clamping leg 1 and the lower clamping leg 2 can be lightly opened manually or with a special tool to create enough space to accommodate the top of the automobile bolt. The end of the upper clamping leg 1 is aligned with the top of the automobile bolt and pushed in until the upper clamping leg 1 completely penetrates the bolt; when the upper clamping leg 1 penetrates the bolt, the lower clamping leg 2 naturally fits on the outer wall of the bolt; the U-shaped structure of the clamping part 3 of the cotter pin Clamp the upper clamping foot 1 and cooperate with the corrugated boss 7 and inner groove 8 of the upper clamping foot 1 to form a firm lock; the wear-resistant reinforcement mesh 5 is wrapped on the cotter pin clamping part 3, and the locking piece 12 at the end of the cotter pin clamping part 3 is buckled at the connection between the cotter pin clamping part 3 and the lower clamping foot 2 to form an additional lock, ensuring that the cotter pin will not accidentally loosen in a vibration environment. Through the above steps, the new type of anti-falling cotter pin at the top of the automobile bolt is successfully installed and fixed on the automobile bolt, effectively preventing the bolt from falling off and improving the safety and reliability of the automobile.

[0023] Throughout this specification, references to terms such as "one embodiment," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" indicate that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0024] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined by the claims.

Claims

1. A cotter pin for preventing the top end of a bolt from falling off for automobiles, the cotter pin for preventing the top end of a bolt from falling off for automobiles specifically comprising an upper clamping foot, a lower clamping foot, a cotter pin clamping portion, and a cotter pin head, characterized in that: One end of the cotter pin head is fixed to one end of the upper clamping foot, and the other end of the cotter pin head is connected to one end of the lower clamping foot. The cotter pin clamping part is a U-shaped structure, and the cotter pin clamping part is connected to the lower clamping foot, and the U-shaped inner wall of the cotter pin clamping part abuts the clamping foot on the wall to form a cotter pin fixed position. The cotter pin head is in the shape of a curled spring, and the cotter pin clamping part is wrapped with a wear-resistant reinforcement net.

2. The anti-dropout cotter pin for the top end of a bolt for automobiles according to claim 1, characterized in that: The end of the upper clamping foot is provided with a vertical slot.

3. The anti-dropout cotter pin for the top end of a bolt for automobiles according to claim 1, characterized in that: A corrugated boss is provided at the position where the upper clamping foot abuts against the cotter pin clamping portion, and an inner groove connected to the corrugated boss is provided inside the cotter pin clamping portion.

4. The cotter pin for preventing the top end of a bolt from falling off for automobiles according to claim 1, characterized in that: The wear-resistant reinforcement mesh includes reinforcement fiber bars and metal wire bars, and the reinforcement fiber bars and metal wire bars are interwoven and wrapped around the clamping part of the cotter pin.

5. The cotter pin for preventing the top end of a bolt from falling off for automobiles according to claim 1, characterized in that: A reinforcement sleeve is provided on one side where the upper clamping foot is connected to the cotter pin head.

6. The automobile bolt top anti-dropout cotter pin according to claim 1, characterized in that: A locking piece is provided at the end of the cotter pin clamping portion.

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