High-temperature-resistant guide positioning bolt for automobile engine

Abstract

The utility model discloses a high-temperature-resistant guide positioning bolt for an automobile engine, which relates to the technical field of automobile accessories and comprises a bolt head, a main stud and an auxiliary stud, and the bottom end of the bolt head is fixedly connected with the main stud; the connecting structure is arranged at the connecting position of the main stud and the auxiliary stud, the adjustability of the length between the main stud and the auxiliary stud is achieved through threaded connection of the inner threaded hole and the connecting stud, the applicability and flexibility of the bolt are enhanced, and meanwhile by means of the clamping design of the fixing notch, the connecting notch and the connecting tenon block, the connecting effect is improved. The rotation or axial movement of the connecting stud is effectively prevented, and the stability of bolt connection is obviously improved; through the multi-layer structural design of the base layer, the heat-resistant layer, the wear-resistant layer and the wear-resistant coating, the bolt can be kept stable in a high-temperature environment, the performance can be kept under a high-wear condition, and the applicability and reliability of the bolt are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to a high-temperature resistant guide positioning bolt for an automobile engine. Background Art

[0002] With the improvement of automobile engine performance, the requirements for fasteners are getting higher and higher. As the car starts to drive, the temperature at the position of the automobile engine is getting higher and higher. Traditional bolt materials are prone to problems such as thermal expansion and thermal stress, resulting in loose connections, breakage and other faults, which seriously affect the reliability and durability of the engine. A heat-resistant high-strength guide positioning bolt for an engine is recorded in the patent with the existing patent announcement number CN220015757U. When the engine is overheated, the heat is transferred to the bolt rod body. The heat dissipation rod is connected to multiple groups of heat sinks. The heat sink and the outer cover are made of aluminum material with good thermal conductivity. The cooling liquid can be injected into the cooling cavity through the injection pipe orifice in advance. The full coolant can quickly cool the heat sink and the outer cover. The through holes set on the heat sink can speed up the flow of coolant. During the heat conduction process, the overall temperature of the bolt also decreases, thereby avoiding overheating and expansion of the bolt; in addition, by providing a hollow groove on the bolt and strengthening it with a cross reinforcing rod, the strength of the bolt is guaranteed while saving bolt material. However, during installation, when the lengths of the mounting holes are different, bolts of different lengths need to be matched with the mounting holes for installation, which causes inconvenience and low efficiency during the installation process.

[0003] Based on this, a high temperature resistant guide positioning bolt for an automobile engine is now provided, which can eliminate the disadvantages of the existing device. Utility Model Content

[0004] The utility model aims to provide a high temperature resistant guide positioning bolt for an automobile engine, so as to solve the problem in the background technology that when the lengths of the mounting holes are different, bolts of different lengths need to be equipped to match the mounting holes for installation, thus causing inconvenience and low efficiency during the installation process.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A high temperature resistant guide positioning bolt for an automobile engine, comprising a screw head, a main stud and a secondary stud, wherein the bottom end of the screw head is fixedly connected to the main stud;

[0007] It also includes a connecting structure, which is arranged at the connection between the main stud and the auxiliary stud and is used to connect the main stud and the auxiliary stud.

[0008] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0009] In an optional solution: the connection structure includes an internal threaded hole and a connecting stud, the internal threaded hole is opened in the middle position between the bottom ends of the main stud and the auxiliary stud, the connecting stud is fixedly installed in the middle position of the top end of the auxiliary stud, the connecting stud is threadedly connected to the internal threaded hole, and a fixing component is provided at the connection between the connecting stud and the internal threaded hole.

[0010] In an optional solution: the fixing component includes a fixing slot and a connecting slot, the fixing slot is opened on one side of the main stud and the auxiliary stud and is connected to the inside of the internal threaded hole, the connecting slot is opened on one side of the connecting stud, the positions of the fixing slot and the connecting slot correspond to each other, and connecting tenons are clamped and installed inside the fixing slot and the connecting slot.

[0011] In an optional solution: the main stud and the auxiliary stud include a base layer, a surface of the base layer is provided with a heat-resistant layer, a surface of the heat-resistant layer is provided with a wear-resistant layer, and a surface of the wear-resistant layer is provided with a wear-resistant coating.

[0012] In an optional solution: the material of the base layer is a carbon steel alloy material, and the material of the heat-resistant layer is a ceramic metal material.

[0013] In an optional solution, the wear-resistant layer is made of a nickel-chromium alloy layer, and the wear-resistant coating is made of tungsten carbide cobalt hard alloy.

[0014] In an optional solution, a gasket is slidably sleeved on the outer walls of the main stud and the auxiliary stud.

[0015] In an optional solution: a buffer layer made of rubber material is provided on the outer surface of the gasket.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. The utility model realizes the adjustability of the length between the main stud and the auxiliary stud through the connection structure, through the threaded connection of the internal threaded hole and the connecting stud, thereby enhancing the applicability and flexibility of the bolt. At the same time, with the help of the clamping design of the fixing notch, the connecting notch and the connecting tenon block, the rotation or axial movement of the connecting stud is effectively prevented, and the stability of the bolt connection is significantly improved.

[0018] 2. The utility model comprises a base layer, a heat-resistant layer, a wear-resistant layer and a wear-resistant coating. The base layer serves as the main structure and bears the main load and stress. The heat-resistant layer arranged thereon is composed of ceramic metal materials, which effectively enhances the high temperature resistance of the bolt, so that it can still maintain stable performance in a high temperature environment. The wear-resistant layer is made of nickel-chromium alloy material and is protected by a wear-resistant coating, which significantly improves the wear resistance of the bolt surface and extends the service life of the bolt. The multi-layer structure design enables the bolt to remain stable in a high temperature environment and maintain performance under high wear conditions, greatly improving the applicability and reliability of the bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is a structural schematic diagram of each structural position of the utility model.

[0021] Figure 3 It is a schematic diagram of the internal structure of the utility model.

[0022] Figure 4 It is a structural schematic diagram of the side of the utility model.

[0023] Figure 5 It is a structural schematic diagram of the composition structure of the utility model.

[0024] Notes on the figure numbers: 11. screw head; 12. main stud; 13. secondary stud; 14. internal threaded hole; 15. fixing slot; 16. connecting stud; 17. connecting slot; 18. connecting tenon; 19. gasket; 20. base layer; 21. heat-resistant layer; 22. wear-resistant layer; 23. wear-resistant coating. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0026] In one embodiment, Figure 1-Figure 5 As shown, a high temperature resistant guide positioning bolt for an automobile engine comprises a screw head 11, a main stud 12 and a secondary stud 13, wherein the bottom end of the screw head 11 is fixedly connected to the main stud 12;

[0027] It also includes a connecting structure, which is arranged at the connection between the main stud 12 and the auxiliary stud 13 and is used to connect the main stud 12 and the auxiliary stud 13.

[0028] In this embodiment, the design of the screw head 11 and the main stud 12 enables the bolt to accurately enter the threaded hole of the nut or other connecting parts during the assembly process, thereby achieving rapid and accurate positioning; through the connection structure, the auxiliary stud 13 can be adjusted in length within a certain range relative to the main stud 12. This length adjustability enables the bolt to adapt to different connection requirements, thereby improving the versatility and flexibility of the bolt.

[0029] In one embodiment, Figure 2 and Figure 3 As shown, the connection structure includes an internal threaded hole 14 and a connecting stud 16. The internal threaded hole 14 is opened in the middle position between the bottom ends of the main stud 12 and the auxiliary stud 13. The connecting stud 16 is fixedly installed in the middle position of the top end of the auxiliary stud 13. The connecting stud 16 is threadedly connected to the internal threaded hole 14. A fixing component is provided at the connection between the connecting stud 16 and the internal threaded hole 14.

[0030] The connection structure realizes the length adjustability between the main stud 12 and the auxiliary stud 13 through the threaded connection of the internal threaded hole 14 and the connecting stud 16, so that the staff can adjust the overall length of the bolt according to actual needs, increasing the applicability and flexibility of the bolt; the setting of the fixing component further enhances the stability and tightness of the connection structure, preventing the bolt from loosening or falling off in harsh environments such as high temperature or vibration.

[0031] In one embodiment, Figure 2 and Figure 3 As shown, the fixing assembly includes a fixing slot 15 and a connecting slot 17. The fixing slot 15 is arranged on one side of the main stud 12 and the auxiliary stud 13 and is communicated with the inside of the internal threaded hole 14. The connecting slot 17 is arranged on one side of the connecting stud 16. The positions of the fixing slot 15 and the connecting slot 17 correspond to each other. A connecting tenon 18 is clamped and installed inside the fixing slot 15 and the connecting slot 17.

[0032] The fixing slot 15 is provided on one side of the main stud 12 and the auxiliary stud 13, and is communicated with the inside of the internal threaded hole 14; at the same time, the connecting slot 17 is provided on one side of the connecting stud 16, corresponding to the position of the fixing slot 15, and the connecting tenon 18 is used to be clamped in the fixing slot 15 and the connecting slot 17. This clamping method provides an additional fixing point, which effectively prevents the connecting stud 16 from rotating or axially moving relative to the main stud 12 and the auxiliary stud 13, thereby significantly enhancing the stability of the bolt connection.

[0033] In one embodiment, Figure 5 As shown, the main stud 12 and the auxiliary stud 13 include a base layer 20 , a surface of the base layer 20 is provided with a heat-resistant layer 21 , a surface of the heat-resistant layer 21 is provided with a wear-resistant layer 22 , and a surface of the wear-resistant layer 22 is provided with a wear-resistant coating 23 .

[0034] As the basic structure of the entire stud, the base layer 20 bears the main load and stress of the bolt; the heat-resistant layer 21 is located on the base layer 20, and its main function is to resist the influence of high temperature environment on the performance of the bolt; the wear-resistant layer 22 is located on the heat-resistant layer 21, and its main function is to enhance the wear resistance of the bolt.

[0035] In one embodiment, Figure 5 As shown, the base layer 20 is made of carbon steel alloy material, and the heat-resistant layer 21 is made of ceramic metal material.

[0036] By providing the heat-resistant layer 21 , the ceramic metal material can improve the high temperature resistance of the entire bolt.

[0037] In one embodiment, Figure 5 As shown, the material of the wear-resistant layer 22 is a nickel-chromium alloy layer, and the material of the wear-resistant coating 23 is tungsten carbide cobalt hard alloy.

[0038] By providing the wear-resistant layer 22 and the wear-resistant coating 23, the nickel-chromium alloy layer and the tungsten carbide cobalt cemented carbide can improve the wear resistance of the entire bolt surface.

[0039] In one embodiment, Figure 3 As shown, a gasket 19 is slidably sleeved on the outer wall of the main stud 12 and the auxiliary stud 13 .

[0040] The main function of the gasket 19 is to fill the microscopic pores or irregular gaps that may exist between the outer walls of the main stud 12 and the auxiliary stud 13, thereby enhancing the sealing of the bolt connection;

[0041] In one embodiment, Figure 3 As shown, the outer surface of the gasket 19 is provided with a buffer layer made of rubber material.

[0042] Rubber materials have good elasticity and shock absorption properties, which can effectively absorb and alleviate the vibration generated at the bolt connection, thereby reducing the risk of bolt loosening due to vibration and improving the stability and safety of the entire bolt.

[0043] The above embodiment discloses a high temperature resistant guide positioning bolt for automobile engines, wherein the design of the screw head 11 and the main stud 12 enables the bolt to accurately enter the threaded hole of the nut or other connecting parts during the assembly process, thereby realizing fast and accurate positioning; the length adjustability between the main stud 12 and the auxiliary stud 13 is realized through the threaded connection of the internal threaded hole 14 and the connecting stud 16, so that the staff can adjust the overall length of the bolt according to actual needs, thereby increasing the applicability and flexibility of the bolt; the connecting tenon 18 is used to be clamped in the fixing notch 15 and the connecting notch 17, and this clamping method provides an additional fixing point, effectively preventing the connecting stud 16 from rotating or axially moving relative to the main stud 12 and the auxiliary stud 13, thereby significantly enhancing the stability of the bolt connection; as the basic structure of the entire stud, the base layer 20 bears the main load and stress of the bolt; the heat-resistant layer 21 is located on the base layer 20, and its main function is to resist the influence of the high temperature environment on the bolt performance; the wear-resistant layer 22 is located on the heat-resistant layer 21, and its main function is to enhance the wear resistance of the bolt.

[0044] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A high temperature resistant guide positioning bolt for an automobile engine, comprising a screw head (11), a main stud (12) and a secondary stud (13), wherein the bottom end of the screw head (11) is fixedly connected to the main stud (12); It is characterized in that It also comprises a connection structure, which is arranged at the connection between the main stud (12) and the auxiliary stud (13) and is used to connect the main stud (12) and the auxiliary stud (13).

2. The high temperature resistant guide and positioning bolt for automobile engine according to claim 1, characterized in that: The connection structure comprises an internal threaded hole (14) and a connection stud (16); the internal threaded hole (14) is provided at a middle position between the bottom ends of the main stud (12) and the auxiliary stud (13); the connection stud (16) is fixedly mounted at a middle position at the top end of the auxiliary stud (13); the connection stud (16) is threadedly connected to the internal threaded hole (14); and a fixing component is provided at the connection between the connection stud (16) and the internal threaded hole (14).

3. The high temperature resistant guide and positioning bolt for automobile engine according to claim 2, characterized in that: The fixing assembly comprises a fixing notch (15) and a connecting notch (17). The fixing notch (15) is provided on one side of the main stud (12) and the auxiliary stud (13) and is communicated with the inside of the internal threaded hole (14). The connecting notch (17) is provided on one side of the connecting stud (16). The fixing notch (15) and the connecting notch (17) correspond in position to each other. A connecting tenon block (18) is installed in the fixing notch (15) and the connecting notch (17) by clamping.

4. The high temperature resistant guide and positioning bolt for automobile engine according to claim 1, characterized in that: The main stud (12) and the auxiliary stud (13) comprise a base layer (20), a surface of the base layer (20) is provided with a heat-resistant layer (21), a surface of the heat-resistant layer (21) is provided with a wear-resistant layer (22), and a surface of the wear-resistant layer (22) is provided with a wear-resistant coating (23).

5. The high temperature resistant guide and positioning bolt for automobile engine according to claim 4, characterized in that: The base layer (20) is made of a carbon steel alloy material, and the heat-resistant layer (21) is made of a ceramic metal material.

6. The high temperature resistant guide and positioning bolt for automobile engine according to claim 4, characterized in that: The material of the wear-resistant layer (22) is a nickel-chromium alloy layer, and the material of the wear-resistant coating (23) is tungsten carbide cobalt hard alloy.

7. The high temperature resistant guide and positioning bolt for automobile engine according to claim 1, characterized in that: Gaskets (19) are slidably sleeved on the outer walls of the main stud (12) and the auxiliary stud (13).

8. The high temperature resistant guide and positioning bolt for automobile engine according to claim 7, characterized in that: The outer surface of the gasket (19) is provided with a buffer layer made of rubber material.

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