Automobile bolt with high fatigue resistance

Abstract

The utility model relates to the technical field of automobile bolts, in particular to a high-fatigue-resistance automobile bolt which comprises a nut, a fixing sleeve is mounted at the bottom of the nut, a connecting column is arranged in the fixing sleeve, and according to the high-fatigue-resistance automobile bolt, when the fixing sleeve moves outside the connecting column, a compression spring is synchronously extruded, so that the fatigue resistance of the automobile bolt is improved. The automobile bolt body is protected when the nut is screwed, the automobile bolt has good fatigue resistance, the safety performance is improved, when a protruding block needs to be mounted or dismounted, a connecting block can be pulled to enable a positioning rod to retreat from a limiting hole to drive a limiting plate to move and compress a reset spring, and therefore the protruding block is allowed to move in a mounting groove; when the positioning rod is inserted into the limiting hole, the protruding block is fixed to the specific position in the mounting groove to prevent the protruding block from moving at will, disassembly and assembly are convenient, and the situation that if one of the anti-fatigue assembly and the threaded rod is damaged, the whole needs to be replaced, and consequently resource waste is caused is avoided.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile bolts, in particular to an automobile bolt with high fatigue resistance. BACKGROUND

[0002] The automobile bolt is an important part in automobile manufacturing and maintenance, is a mechanical part, is usually composed of a head and a screw rod (a cylinder with external threads), needs to be used in cooperation with a nut, and is used for fastening and connecting two parts with through holes.

[0003] The Chinese patent network discloses an automobile bolt with high fatigue resistance, and has the publication number CN220890720U. The automobile bolt comprises a nut, a connecting piece, a buffer structure and a threaded rod. The bottom of the nut is provided with the connecting piece. The bottom of the connecting piece is fixedly connected with the buffer structure. The bottom of the buffer structure is fixedly connected with the threaded rod. The buffer structure comprises a placing cylinder, a spring, a connecting column, a placing cavity, a sliding groove and a sliding rod. The inside of the placing cylinder is provided with the placing cavity. The inside of the placing cavity is connected with the spring. The side of the placing cylinder is provided with the sliding groove. The side of the connecting column is fixedly connected with the sliding rod. The sliding rod and the sliding groove are used in cooperation. The connecting column and the placing cylinder are used in cooperation. The automobile bolt with high fatigue resistance has the advantages that the buffer structure is installed in the bolt structure. When the automobile bolt is subjected to external force for a long time, the automobile bolt has good fatigue resistance, and the safety performance is improved.

[0004] The following problems exist in the scheme. The fatigue prevention assembly on the bolt is fixedly connected with the threaded rod. If one of them is damaged, the whole needs to be replaced, which is inconvenient for disassembly and partial replacement, and therefore has certain disadvantages.

[0005] Therefore, the application provides an automobile bolt with high fatigue resistance to solve the above problems. Utility model content

[0006] The utility model aims at providing an automobile bolt with high fatigue resistance to solve the problems in the background art.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an automobile bolt with high fatigue resistance, comprising a nut, a fixed sleeve is installed at the bottom of the nut, a connecting column is arranged in the inside of the fixed sleeve, a fixed column is installed at the bottom of the connecting column, an installation slot is formed at the bottom of the fixed column, a convex block is arranged in the inside of the installation slot, a threaded rod is installed at the bottom of the convex block, cavities are formed at both ends of the inside of the fixed column and located at both ends of the installation slot, a positioning rod is installed between the two ends of the inside of the cavity, a return spring is installed on the outer ring surface of the positioning rod, and a limiting plate is installed at one end of the outside of the positioning rod and located at the return spring.

[0008] Preferably, one end of the positioning rod penetrates through the connecting block mounted on the outside of the fixed column, and the other end of the positioning rod extends into the inside of the mounting groove.

[0009] Preferably, limit holes are symmetrically formed at the two ends of the protruding block, and the inner side wall of the limit hole is matched with the outer ring surface of the positioning rod.

[0010] Preferably, limit grooves are symmetrically formed at the two sides of the inside of the mounting groove, limit blocks are symmetrically mounted at the two ends of the protruding block, and the inner side wall of the limit groove is matched with the outer side surface of the limit block.

[0011] Preferably, the inner side wall of the fixed sleeve is matched with the outer ring surface of the connecting column, and the inner side wall of the fixed sleeve is in sliding connection with the outer ring surface of the connecting column.

[0012] Preferably, four groups of sliding grooves are annularly formed at the outside of the fixed sleeve, cylindrical blocks are mounted at the outside of the connecting column and inside the four groups of sliding grooves, and a compression spring is mounted at the top of the connecting column and inside the fixed sleeve.

[0013] To sum up, the present application has the following beneficial technical effects:

[0014] The fixed sleeve is matched with the outer ring surface of the connecting column, and the inner side wall of the fixed sleeve is in sliding connection with the outer ring surface of the connecting column. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the overall structure schematic diagram of the utility model;

[0016] Figure 2 is the partial structure layered schematic diagram of the utility model Figure 1

[0017] Figure 3 is the partial structure layered schematic diagram of the utility model Figure 2

[0018] Figure 4 is the partial structure internal schematic diagram of the utility model Figure 3

[0019] ​​​Explanation of reference signs: 1, nut; 2, fixing sleeve; 201, sliding groove; 3, connecting column; 4, fixing column; 401, mounting groove; 402, cavity; 403, limiting groove; 5, protruding block; 501, limiting hole; 6, threaded rod; 7, positioning rod; 8, return spring; 9, limiting plate; 10, limiting block; 11, connecting block; 12, cylindrical block; 13, compression spring. DETAILED DESCRIPTION

[0020] The following will be described in detail in combination with the accompanying drawings. Figure 1 - Figure 4 The present application is further described in detail.

[0021] A strong anti-fatigue automobile bolt, referring to Figure 1 - Figure 4 , comprising a nut 1, the bottom of the nut 1 is provided with a fixing sleeve 2, the inside of the fixing sleeve 2 is provided with a connecting column 3, the bottom of the connecting column 3 is provided with a fixing column 4, the bottom of the fixing column 4 is provided with a mounting groove 401, the inside of the mounting groove 401 is provided with a protruding block 5, the bottom of the protruding block 5 is provided with a threaded rod 6, the inside of the fixing column 4 and at both ends of the mounting groove 401 are provided with cavities 402, the inside of the cavities 402 between both ends is provided with a positioning rod 7, the outer ring surface of the positioning rod 7 is provided with a return spring 8, the outside of the positioning rod 7 and at one end of the return spring 8 is provided with a limiting plate 9.

[0022] Referring to Figure 3 - Figure 4 , one end of the positioning rod 7 penetrating to the outside of the fixing column 4 is provided with a connecting block 11, the end of the positioning rod 7 away from the connecting block 11 extends to the inside of the mounting groove 401, the outside of both ends of the protruding block 5 is provided with limiting holes 501, the inner side wall size of the limiting holes 501 is matched with the outer ring surface size of the positioning rod 7, one end of the positioning rod 7 penetrating to the outside of the fixing column 4 is provided with a connecting block 11, which is convenient for manually pulling the connecting block 11 to drive the positioning rod 7 to move, when it is needed to install or disassemble the protruding block 5, the positioning rod 7 can be pulled out of the limiting hole 501 to drive the limiting plate 9 to move and compress the return spring 8, so as to allow the protruding block 5 to move in the mounting groove 401, when the positioning rod 7 is inserted into the limiting hole 501, the protruding block 5 is fixed at a specific position in the mounting groove 401, preventing it from moving randomly, facilitating disassembly, avoiding the need to replace the entire anti-fatigue assembly and threaded rod if one of them is damaged, thereby causing resource waste.

[0023] Referring to Figure 3 - Figure 4The two symmetrical limiting grooves 403 are arranged on the inner side walls of the mounting groove 401, and the two ends of the protruding block 5 are symmetrically provided with limiting blocks 10, the inner side wall of the limiting groove 403 is matched with the outer side surface of the limiting block 10 in size, which not only ensures that the positioning rod 7 can accurately enter the inside of the limiting hole 501, but also further enhances the stability of the protruding block 5.

[0024] With reference to Figure 1 - Figure 2 The inner side wall of the fixing sleeve 2 is matched with the outer ring surface of the connecting column 3 in size, and the inner side wall of the fixing sleeve 2 is in sliding connection with the outer ring surface of the connecting column 3, so that the fixing sleeve 2 can move up and down outside the connecting column 3 during installation, four groups of sliding grooves 201 are arranged in an annular array on the outside of the fixing sleeve 2, a cylindrical block 12 is arranged on the outside of the connecting column 3 and located inside the four groups of sliding grooves 201, a compression spring 13 is arranged on the top of the connecting column 3 and located inside the fixing sleeve 2, the fixing sleeve 2 is extruded to the compression spring 13 when moving outside the connecting column 3, and the cylindrical block 12 is arranged to slide inside the sliding groove 201, which increases the stability of movement and avoids separation of the fixing sleeve 2 and the connecting column 3, thereby protecting the automobile bolt body when the nut 1 is screwed, so that the automobile bolt has good fatigue resistance and improves the safety performance.

[0025] The implementation principle of the automobile bolt with strong fatigue resistance is as follows: when the bolt is used, the fixing sleeve 2 is extruded to the compression spring 13 when moving outside the connecting column 3, and the cylindrical block 12 is arranged to slide inside the sliding groove 201, which increases the stability of movement and avoids separation of the fixing sleeve 2 and the connecting column 3, thereby protecting the automobile bolt body when the nut 1 is screwed, so that the automobile bolt has good fatigue resistance and improves the safety performance, when the protruding block 5 needs to be installed or disassembled, the connecting block 11 is pulled to make the positioning rod 7 exit from the limiting hole 501 and drive the limiting plate 9 to move and compress the reset spring 8, so that the protruding block 5 can move in the mounting groove 401, when the positioning rod 7 is inserted into the limiting hole 501, the protruding block 5 is fixed at a specific position in the mounting groove 401 and prevented from moving randomly, the installation and disassembly are convenient, and if one of the fatigue resistance assembly and the threaded rod is damaged, the whole needs to be replaced, thereby causing resource waste, the inner side wall of the limiting groove 403 is matched with the outer side surface of the limiting block 10 in size, which not only ensures that the positioning rod 7 can accurately enter the inside of the limiting hole 501, but also further enhances the stability of the protruding block 5.

[0026] The above is only a preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A fatigue resistant automobile bolt comprising a nut (1), characterized in that: The bottom of the nut (1) is provided with a fixed sleeve (2), the inside of the fixed sleeve (2) is provided with a connecting column (3), the bottom of the connecting column (3) is provided with a fixed column (4), the bottom of the fixed column (4) is provided with an installation slot (401), the inside of the installation slot (401) is provided with a protruding block (5), the bottom of the protruding block (5) is provided with a threaded rod (6), the inside of the fixed column (4) and the both ends of the installation slot (401) are provided with cavities (402), the inside of the cavities (402) is provided with a positioning rod (7), the outer ring surface of the positioning rod (7) is provided with a reset spring (8), the outside of the positioning rod (7) and one end of the reset spring (8) is provided with a limiting plate (9).

2. The automobile bolt according to claim 1, wherein: One end of the positioning rod (7) penetrates through the outside of the fixed column (4) and is provided with a connecting block (11), the end of the positioning rod (7) away from the connecting block (11) extends to the inside of the installation slot (401).

3. The automobile bolt according to claim 1, wherein: The both ends of the protruding block (5) are symmetrically provided with limiting holes (501), the inner side wall size of the limiting hole (501) is matched with the outer ring surface size of the positioning rod (7).

4. The automobile bolt according to claim 1, wherein: The both sides of the inside of the installation slot (401) are symmetrically provided with limiting grooves (403), the both ends of the protruding block (5) are symmetrically provided with limiting blocks (10), the inner side wall size of the limiting groove (403) is matched with the outer side surface size of the limiting block (10).

5. The automobile bolt according to claim 1, wherein: The inner side wall size of the fixed sleeve (2) is matched with the outer ring surface size of the connecting column (3), and the inner side wall of the fixed sleeve (2) and the outer ring surface of the connecting column (3) are in sliding connection.

6. The automobile bolt according to claim 1, wherein: The outside of the fixed sleeve (2) is annularly provided with four groups of sliding grooves (201), the outside of the connecting column (3) and the inside of the four groups of sliding grooves (201) are provided with cylindrical blocks (12), the top of the connecting column (3) and the inside of the fixed sleeve (2) are provided with compression springs (13).

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