Wear-resistant and shock-resistant screw for automobile gearbox

Abstract

The utility model relates to the technical field of screws, and discloses a wear-resistant shock-resistant screw for an automobile gearbox, which comprises a stud body, the stud body comprises a first nut, the upper surface of the first nut is provided with a hexagonal groove, the upper surface of the hexagonal groove is provided with a sealing plate, and the lower end of the sealing plate is provided with a spring. The lower surface of the spring is attached to the inner surface of the hexagonal groove, a threaded column is fixedly mounted on the lower surface of the first nut, a mounting groove is formed in the lower surface of the threaded column, and a secondary fastening structure is mounted in the mounting groove. By means of the secondary fastening structure installed in the stud body, connection between the stud body and a gearbox is firmer, the fastening effect of the stud body is effectively improved, the stud body is prevented from loosening in the using process, the maintenance cost is saved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of screws, in particular to a wear-resistant and shock-resistant screw for an automobile gearbox. Background Art

[0002] At present, bolts are a commonly used fastener. As a structural connector, they are widely used in real life. For example, they are used in various fields such as house construction, railway, highway and bridge construction, engineering construction, automobile parts, locomotive parts, motorcycle parts and furniture industry. Bolts with a supporting surface on the bolt head that exceeds the diameter of the screwing surface are called flange bolts. Hexagonal flange bolts are commonly used high-strength fastening bolts for steel structures. They are a type of fastener consisting of a hexagonal bolt head, a flange and a screw. They need to be used in conjunction with nuts to fasten and connect two parts with holes.

[0003] The utility model patent application document with publication number "CN202484030U" discloses a screw, which is mainly composed of a head core part and a threaded part. This technical solution has the advantages of ferromagnetism and plastic, and solves the problem that existing plastic screw fasteners cannot be adsorbed by magnetic tools. When used in automatic assembly lines, the assembly speed is slower than that of screws made of iron-based metals, and there are also problems of tightening or even falling of the screws during the locking operation.

[0004] The screw disclosed in the above document has the following defects: after being used for a period of time, the screw is easy to loosen and fall off, losing its fixing effect, and having poor practicality.

[0005] It can be seen from this that the existing screws do not have a secondary fastening structure, and it is necessary to improve the existing deficiencies and provide a wear-resistant and shock-resistant screw for automobile gearboxes. Utility Model Content

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a wear-resistant and shock-resistant screw for automobile gearbox, comprising a stud body, wherein the stud body comprises a first nut, the upper surface of the first nut is provided with a hexagonal groove, the upper surface of the hexagonal groove is provided with a sealing plate, the lower end of the sealing plate is provided with a spring, the lower surface of the spring is fitted with the inner surface of the hexagonal groove, a threaded column is fixedly installed on the lower surface of the first nut, a mounting groove is provided on the lower surface of the threaded column, and a secondary fastening structure is installed inside the mounting groove.

[0008] Furthermore, the secondary fastening structure includes a second nut, a connecting column is installed on the upper surface of the second nut, a fixing plate is installed on the upper surface of the connecting column, the outer surface of the fixing plate is rotatably installed with the inner surface of the mounting column, a sliding groove is opened on one side surface of the mounting column, the sliding grooves are set to four and are evenly distributed around the axis of the mounting column, a slider is slidably installed inside each of the sliding grooves, and one side of the slider passes through one side of the threaded column.

[0009] Furthermore, a protrusion is installed on one side of the sealing plate, and a groove is opened on the inner wall of the hexagonal groove. The outer surface of the protrusion is slidably installed with the inner surface of the groove.

[0010] Furthermore, a gasket is placed outside the threaded column.

[0011] Furthermore, a wrench engaging groove is formed on the lower surface of the second nut.

[0012] Furthermore, the outer surface of the stud body is coated with a waterproof coating.

[0013] The utility model has the following beneficial effects:

[0014] (1) The utility model makes the connection between the bolt body and the gearbox more secure by installing a secondary fastening structure inside the stud body, effectively improves the fastening effect of the stud body, prevents the stud body from loosening during use, saves maintenance costs, and prolongs service life.

[0015] (2) The utility model installs a sealing plate on the upper surface of the first nut to prevent external dust from entering the interior of the hexagonal groove, thereby avoiding clogging of the hexagonal groove. The sealing plate prevents clogging of dust, thereby greatly improving the service life of the stud body.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the secondary fastening structure of the utility model;

[0020] Figure 3 This is a cross-sectional view of the secondary fastening structure of the utility model;

[0021] Figure 4 This is a cross-sectional view of the nut structure of the utility model;

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] In the figure: 1. stud body; 101. first nut; 102. sealing plate; 103. spring; 104. threaded column; 2. secondary fastening structure; 201. second nut; 202. connecting column; 203. fixing plate; 204. mounting column; 205. slide groove; 206. slider; 207. spanner engagement groove; 3. gasket. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 4 As shown, the utility model is a wear-resistant and shock-resistant screw for automobile gearbox, including a stud body 1, the stud body 1 includes a first nut 101, the upper surface of the first nut 101 is provided with a hexagonal groove, the upper surface of the hexagonal groove is installed with a sealing plate 102, the lower end of the sealing plate 102 is installed with a spring 103, the lower surface of the spring 103 is in contact with the inner surface of the hexagonal groove, the lower surface of the first nut 101 is fixedly installed with a threaded column 104, the lower surface of the threaded column 104 is provided with an installation groove, and a secondary fastening structure 2 is installed inside the installation groove.

[0026] The secondary fastening structure 2 includes a second nut 201, a connecting column 202 is installed on the upper surface of the second nut 201, a fixing plate 203 is installed on the upper surface of the connecting column 202, the outer surface of the fixing plate 203 is rotatably installed with the inner surface of the mounting column 204, and a sliding groove 205 is opened on one side surface of the mounting column 204. The sliding grooves 205 are set to four and are evenly distributed around the axis of the mounting column 204. A slider 206 is slidably installed inside each sliding groove 205, and one side of the slider 206 passes through one side of the threaded column 104.

[0027] A protrusion is installed on one side of the sealing plate 102, and a groove is opened on the inner wall of the hexagonal groove. The outer surface of the protrusion is slidably installed with the inner surface of the groove.

[0028] A gasket 3 is placed outside the threaded column 104 .

[0029] A wrench engaging groove 207 is defined on the lower surface of the second nut 201 .

[0030] The outer surface of the stud body 1 is coated with a waterproof coating.

[0031] When in use, first hold the hexagonal wrench against the upper surface of the sealing plate 102, then squeeze the sealing plate 102 downwards, so that the sealing plate 102 moves downwards along the groove provided on the inner wall of the hexagonal groove, squeeze the spring 103 downwards as the sealing plate 102 moves downwards, then turn the hexagonal wrench to complete the installation of the stud body 1, and when the hexagonal wrench is pulled out, the spring 103 will rebound upwards, pushing the sealing plate 102 to move upwards, blocking the opening of the hexagonal groove, and the sealing plate 102 is installed on the upper surface of the first nut 101, so that external dust cannot enter the interior of the hexagonal groove, avoiding clogging of the hexagonal groove, and the sealing plate 102 blocks the clogging of dust. The plug greatly improves the service life of the stud body 1. When the stud body 1 is installed, the hexagonal wrench is inserted into the wrench engaging groove 207, and the connecting column 202, the fixing plate 203 and the mounting column 204 are driven to move upward by rotating the second nut 201, thereby pushing the slider 206 on one side of the mounting column 204 to slide toward the outer surface of the threaded column 104. The secondary fastening structure 2 installed inside the stud body 1 makes the connection between the stud body 1 and the gearbox more secure, effectively improving the fastening effect of the stud body 1, preventing the stud body 1 from loosening during use, saving maintenance costs, and extending the service life.

[0032] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A wear-resistant and shock-resistant screw for an automobile gearbox, comprising a stud body (1), characterized in that: The stud body (1) comprises a first nut (101), the upper surface of the first nut (101) is provided with a hexagonal groove, the upper surface of the hexagonal groove is provided with a sealing plate (102), the lower end of the sealing plate (102) is provided with a spring (103), the lower surface of the spring (103) is fitted with the inner surface of the hexagonal groove, the lower surface of the first nut (101) is fixedly provided with a threaded column (104), the lower surface of the threaded column (104) is provided with a mounting groove, and a secondary fastening structure (2) is installed inside the mounting groove.

2. The wear-resistant and shock-resistant screw for automobile gearbox according to claim 1, characterized in that: The secondary fastening structure (2) comprises a second nut (201), a connecting column (202) being mounted on the upper surface of the second nut (201), a fixing plate (203) being mounted on the upper surface of the connecting column (202), an outer surface of the fixing plate (203) being rotatably mounted on the inner surface of the mounting column (204), a sliding groove (205) being provided on one side surface of the mounting column (204), the sliding grooves (205) being set to four and evenly distributed around the axis of the mounting column (204), a sliding block (206) being slidably mounted inside each of the sliding grooves (205), and one side of the sliding block (206) passing through one side of the threaded column (104).

3. The wear-resistant and shock-resistant screw for automobile gearbox according to claim 1, characterized in that: A convex block is installed on one side of the sealing plate (102), a groove is provided on the inner wall of the hexagonal groove, and the outer surface of the convex block is slidably mounted on the inner surface of the groove.

4. The wear-resistant and shock-resistant screw for automobile gearbox according to claim 1, characterized in that: A gasket (3) is placed outside the threaded column (104).

5. The wear-resistant and shock-resistant screw for automobile gearbox according to claim 2, characterized in that: A wrench engaging groove (207) is provided on the lower surface of the second nut (201).

6. The wear-resistant and shock-resistant screw for automobile gearbox according to claim 1, characterized in that: The outer surface of the stud body (1) is coated with a waterproof coating.

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