Novel oil port screw plug

Abstract

The utility model discloses a novel oil port screw plug which comprises a screw plug body, an outer hexagonal connecting part is arranged at the left side end of the screw plug body, an inner hexagonal connecting hole is formed in the inner side of the outer hexagonal connecting part, an oblique angle is arranged on the outer circumference of the screw plug body, and installation end faces abutting against an external workpiece are distributed on the right side of the screw plug body along the circumference. The right side of the screw plug body is further connected with a flange, the distance between the outermost side end of the flange and the installation end face is L, and L ranges from 0.1 mm to 0.2 mm. The utility model has the advantages of simple structure, low manufacturing cost, convenience in after-sales maintenance and replacement of products, and effective reduction of paint accumulation.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile assembly, in particular to a novel oil port screw plug. Background Art

[0002] Oil port screw plugs are mainly used to protect products such as steering gears, steering oil pumps, power cylinders, steering followers, etc. during storage, transportation, painting, etc. before assembling oil pipe joints.

[0003] The first existing oil port screw plug is Figure 1-4 As shown, Figure 1 This is the assembly drawing of the oil port screw plug installed on the product. Figure 2 It is a partial cross-sectional schematic diagram. Figure 3 for Figure 1 The schematic diagram at A is enlarged. The material of the oil port screw plug is plastic. There is a rectangular sealing gasket 1 between the thread backing groove of the oil port screw plug and the installation surface of the product. The rectangular sealing gasket is made of rubber and plays a sealing role. The shape of the backing groove 2 is partially concave inward to prevent the rectangular sealing gasket from being squeezed out when tightening the thread. There is knurling 3 on the outside of the head boss of the oil port screw plug, which is convenient for pre-tightening the thread by hand; there is a hexagon socket head 4 on the inside. Figure 4 As shown, it is convenient to install and remove the oil port screw plug with an Allen wrench. The disadvantages are: a. It is necessary to add an additional rectangular sealing gasket to seal, the structure is complex, and the manufacturing cost is high; b. The oil port screw plug can only be installed and removed with an Allen wrench, which is not convenient for after-sales maintenance or replacement of the product; c. The outer side of the head boss of the oil port screw plug is too high and the head protection area is too small, resulting in excessive paint accumulation between it and the installation surface of the product to form a paint accumulation area 5, affecting the subsequent installation of the pipe joint.

[0004] The second existing oil port screw plug is shown in Figure 5-8 As shown, Figure 5 This is the assembly drawing of the oil port screw plug installed on the product. Figure 6 is its cross-sectional schematic diagram, Figure 7 for Figure 6The enlarged schematic diagram at B in the middle shows that the oil port screw plug is made of plastic, and has a sealing lip 6 on its mounting surface 7. The sealing lip protrudes from the mounting surface by 0.1 to 0.2 mm, and is about 0.2 mm wide from top to bottom. Under the tightening torque of the thread, the sealing lip produces a large interference deformation, pressing tightly against the mounting surface of the product to seal. There is a cross groove 8 on the inner side of the head boss of the oil port screw plug, which is convenient for installing or removing the oil port screw plug with a cross wrench. Compared with the existing first type of oil port screw plug, it has no rectangular sealing gasket, simple structure, and low manufacturing cost, but its disadvantages are: a. The oil port plug can only be installed or removed with a cross wrench, which is not convenient for after-sales maintenance or replacement of the product; b. The outer edge of the head boss of the oil port plug is too high and the head protection area is too small, resulting in excessive accumulation of paint between it and the installation surface of the product, affecting the subsequent installation of the pipe joint; c. The head boss of the oil port plug is too small, and its strength and rigidity are relatively small. When the tightening torque of the oil port plug is too large, the outer side of the head boss warps and deforms, affecting the sealing function; the head boss has a cross groove, which is easy to break when the tightening torque is larger or under a large impact force. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a novel oil port screw plug, which has a simple structure and low manufacturing cost, is convenient for after-sales maintenance and replacement of the product, and effectively reduces paint accumulation.

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

[0007] A novel oil port plug comprises a plug body, wherein the left end of the plug body is provided with an external hexagonal connection portion, the inner side of the external hexagonal connection portion is provided with an internal hexagonal connection hole, the outer circumference of the plug body is provided with an oblique angle, the right side of the plug body is provided with a mounting end face that contacts an external workpiece along the circumference, the right side of the plug body is further connected with a flange, the outermost end of the flange protrudes from the mounting end face by a distance L, and L is 0.1 to 0.2 mm.

[0008] A further technical solution is that the plug body, the external hexagonal connecting portion and the flange are an integrated structure, made of plastic material, and molded in one piece.

[0009] A further technical solution is that the bevel is gradually tilted outward from the left end of the plug body to the right installation end face of the plug body, thereby reducing the height of the outer edge, increasing the head protection area, and reducing the paint accumulation problem.

[0010] A further technical solution is that an annular groove is also provided on the right side end of the screw plug body, and the flange is located in the annular groove and protrudes to the right side, so that the flange can produce a large interference deformation and press tightly on the installation surface of the product to play a sealing role.

[0011] The beneficial effects of the utility model are:

[0012] 1. Compared with the first existing oil port screw plug, there is no rectangular sealing gasket, the structure is simple and the manufacturing cost is low.

[0013] 2. Compared with the existing second type of oil port screw plug, an external hexagonal connection part is provided at the left end of the screw plug body, and an internal hexagonal connection hole is provided on the inner side of the external hexagonal connection part, which is not only convenient for after-sales maintenance and replacement of the product, but also increases the strength and rigidity of the oil port screw plug, so that the oil port screw plug is not easy to deform or break during storage, transportation, painting or installation and disassembly of the product, thereby enhancing the protection function.

[0014] 3. The outer edge of the screw plug body is designed with a bevel to reduce the step height of the outer edge, increase the head protection area, and reduce the paint accumulation problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for the embodiments or the description of the prior art will be 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 paying creative work.

[0016] Figure 1 This is a schematic diagram of the installation of the first type of existing oil port screw plug;

[0017] Figure 2 It is a partial cross-sectional view of the first type of existing oil port screw plug;

[0018] Figure 3 for Figure 2 The enlarged schematic diagram at A in the middle;

[0019] Figure 4 This is a front view of the second type of existing oil port screw plug;

[0020] Figure 5 This is a schematic diagram of the installation of the second type of existing oil port screw plug;

[0021] Figure 6 It is a cross-sectional view of the second type of existing oil port screw plug;

[0022] Figure 7 for Figure 6 The enlarged schematic diagram at B in the middle;

[0023] Figure 8 It is the front view of the second type of existing oil port screw plug;

[0024] Fig. 9 This is a cross-sectional view of a novel oil port screw plug of the utility model;

[0025] Fig.10 For this utility model Fig. 9 The enlarged schematic diagram at C in the middle;

[0026] Fig.11 This is a front view of a novel oil port screw plug of the utility model;

[0027] Fig.12 This is a schematic diagram of the installation of a novel oil port screw plug of the utility model.

[0028] Figure 1-12 In: 1-external hexagonal connection part, 2-internal hexagonal connection hole, 3-screw plug body, 4-bevel, 5-installation end face, 6-annular groove, 7-flange, 8-external workpiece. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described in detail below so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0030] See also Figures 1 to 12 As shown, a novel oil port plug comprises a plug body 3, an outer hexagonal connecting portion 1 is provided at the left end of the plug body 3, an inner hexagonal connecting hole 2 is provided on the inner side of the outer hexagonal connecting portion 1, an oblique angle 4 is provided on the outer circumference of the plug body 3, and a mounting end face 5 that contacts an external workpiece 8 is distributed along the circumference on the right side of the plug body 3. A flange 7 is also connected to the right side of the plug body 3, and the outermost end of the flange 7 protrudes from the mounting end face 5 by a distance L, and L is 0.1 to 0.2 mm.

[0031] The plug body 3, the external hexagonal connection part 1 and the flange 7 are an integrated structure, made of plastic material, and formed in one piece. The bevel 4 is gradually tilted outward from the left end of the plug body 3 to the right installation end face 5 of the plug body 3, reducing the height of the outer edge, increasing the head protection area, and reducing the problem of paint accumulation. The right end of the plug body 3 is also provided with an annular groove 6, and the flange 7 is located in the annular groove 6 and protrudes to the right side, which can make the flange 7 produce a large interference deformation, press tightly on the installation surface of the product, and play a sealing role.

[0032] In this embodiment, the installation is as follows Fig.12As shown, the screw plug body 3 is installed on the left end of the external workpiece 8. The installation method can be threaded or interference fit or other conventional methods. After installation, the installation end face 5 on the right end face of the screw plug body 3 completely contacts and seals with the left end of the external workpiece 8. At the same time, the flange 7 is 0.1-0.2 mm higher than the installation end face 5 on the right side. After contacting the left end face of the external workpiece 8, a large interference deformation is generated, and it is tightly pressed on the installation surface of the external workpiece 8, which also plays a sealing role. It can achieve a double sealing effect inside and outside, and uses the plastic deformation of plastic to seal. The structure is simple, the manufacturing cost is low, and the screw plug body An outer hexagonal connection part 1 is provided at the left end of 3, and an inner hexagonal connection hole 2 is provided on the inner side of the outer hexagonal connection part 1, so that the entire oil port screw plug is more convenient to install or disassemble, and is convenient for after-sales maintenance or replacement of the product; and the outer hexagonal connection part 1 has a larger outer size, which increases the strength and rigidity of the entire oil port screw plug, so that the product is not easily deformed or broken during storage, transportation, painting, etc. or the entire oil port screw plug is not easily deformed or broken during installation and disassembly, thereby enhancing the protection function. The outer edge of the screw plug body 3 is designed to be an oblique angle 4, which reduces the height of the outer edge, increases the protection area of ​​the screw plug body 3, and reduces the problem of paint accumulation.

[0033] The above is only a specific implementation of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the present utility model.

Claims

1. A novel oil port screw plug, comprising a screw plug body, characterized in that: An external hexagonal connection portion is provided at the left end of the screw plug body, an internal hexagonal connection hole is provided on the inner side of the external hexagonal connection portion, an oblique angle is provided on the outer circumference of the screw plug body, and mounting end faces that come into contact with an external workpiece are distributed along the circumference on the right side of the screw plug body. A flange is also connected to the right side of the screw plug body, and the outermost end of the flange protrudes from the mounting end face by a distance L, and L is 0.1 to 0.2 mm.

2. A novel oil port screw plug according to claim 1, characterized in that: The screw plug body, the external hexagonal connecting portion and the flange are an integrated structure.

3. A novel oil port screw plug according to claim 1, characterized in that: The bevel is gradually inclined outward from the left end of the screw plug body to the right installation end surface of the screw plug body.

4. A novel oil port screw plug according to claim 1, characterized in that: The right end of the screw plug body is also provided with an annular groove, and the flange is located in the annular groove and protrudes toward the right side.

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