Electric car coupler rear cover sealing structure

Abstract

The utility model belongs to the technical field of electric car couplers, and particularly relates to a rear cover sealing structure of an electric car coupler. According to the technical scheme, the electric coupler rear cover sealing structure comprises a shell and a rear cover, the shell and the rear cover are connected through a bolt, a limiting table is arranged at the position of a bolt hole in the side, close to the rear cover, of the shell, the limiting table is sleeved with a sealing gasket, and the sealing gasket is pressed between the shell and the rear cover. The utility model provides a sealing structure for a rear cover of an electric car coupler, which ensures sealing, avoids unqualified locking torque of a bolt after aging, ensures that compression of a sealing gasket meets design requirements, and avoids a glue extrusion phenomenon caused by overpressure of the sealing gasket.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric couplers, and particularly relates to a sealing structure for a rear cover of an electric coupler. Background Art

[0002] Electric couplers are essential components for Chinese standard EMUs and subway components. Chinese standard EMUs have very high reliability requirements for electric couplers. The use environment of electric couplers must ensure the stability and reliability of their normal working performance, and the waterproofness of the coupler is one of the important assessment criteria for its reliability. Once the coupler leaks and causes water ingress and short circuit of the electrical components inside the coupler, it will cause a very serious accident. After the assembly of the rear cover gasket of the electric coupler reaches the validity period, the locking bolts loosen, resulting in unqualified torque, which in turn causes the gasket to loosen and water ingress and short circuit, affecting its reliability. In addition, when the rear cover bolts of the electric coupler are tightened, the rear cover gasket is severely squeezed, which seriously affects the appearance of the product. Utility Model Content

[0003] In order to solve the above-mentioned problems existing in the prior art, the purpose of the utility model is to provide a sealing structure for the rear cover of an electric coupler, which ensures sealing while avoiding unqualified bolt locking torque after aging, ensures that the compression of the sealing gasket meets the design requirements while avoiding glue extrusion caused by overpressure of the sealing gasket.

[0004] The technical solution adopted by the utility model is:

[0005] The invention discloses a sealing structure for a rear cover of an electric coupler, comprising a shell and a rear cover, wherein the shell and the rear cover are connected by bolts, a limit platform is arranged at a bolt hole on one side of the shell close to the rear cover, a sealing gasket is sleeved on the limit platform, and the sealing gasket is pressed tightly between the shell and the rear cover.

[0006] The utility model provides a limit platform at the bolt hole on one side of the shell close to the rear cover, and a sealing gasket is sleeved on the limit platform. While ensuring the seal, the limit platform can support the rear cover to avoid the situation where the bolt locking torque is unqualified after the sealing gasket is assembled for a certain period of time.

[0007] As a preferred solution of the utility model, the height of the limiting platform is less than the thickness of the sealing gasket. The thickness of the sealing gasket is greater than the height of the limiting platform, ensuring that the sealing gasket can be pressed tightly between the housing and the rear cover to achieve a good sealing effect.

[0008] As a preferred solution of the utility model, the difference between the height of the limiting platform and the thickness of the sealing gasket is 0.3 mm.

[0009] As a preferred solution of the utility model, the height of the limit platform is 1.7 mm, and the thickness of the sealing gasket is 2.0 mm.

[0010] As a preferred solution of the utility model, the area of ​​the rear cover on the side close to the shell corresponding to the limit platform is not painted, the area of ​​the rear cover on the side close to the shell corresponding to the area between adjacent limit platforms is only sprayed with primer, and the area of ​​the rear cover on the side close to the shell corresponding to the limit platform close to the center of the rear cover is sprayed with primer and topcoat. Through the above painting method, while ensuring that the compression of the sealing gasket meets the design requirements, the phenomenon of glue squeezing caused by overpressure of the sealing gasket is avoided, the appearance and image of the product are improved, and the quality of the product reaches or even exceeds that of competing products.

[0011] As a preferred solution of the utility model, the thickness of the primer sprayed on the area between adjacent limit platforms on the side of the rear cover close to the shell is 35-50 μm.

[0012] As a preferred solution of the utility model, the width of the area between adjacent limit platforms on the side of the rear cover close to the shell is 20 mm.

[0013] As a preferred solution of the utility model, the area of ​​the rear cover corresponding to the limit platform on the side away from the shell is only sprayed with primer, and the area of ​​the rear cover other than the area corresponding to the limit platform on the side away from the shell is sprayed with primer and topcoat.

[0014] As a preferred solution of the present utility model, the number of the bolt holes on the rear cover is 16.

[0015] As a preferred solution of the utility model, the 16 bolt holes on the rear cover are 4 bolt holes with a diameter of 22 mm and 12 bolt holes with a diameter of 12 mm.

[0016] The beneficial effects of the utility model are:

[0017] 1. A limit platform is provided at the bolt hole on one side of the shell of the utility model close to the rear cover, and a sealing gasket is sleeved on the limit platform. While ensuring the seal, the limit platform can support the rear cover to avoid the situation where the bolt locking torque is unqualified after the sealing gasket is assembled for a certain period of time.

[0018] 2. The parts of the back cover of the utility model corresponding to the gasket are not painted or only primed and the thickness of the paint is limited. While ensuring that the compression of the gasket meets the design requirements, it avoids the phenomenon of glue squeezing caused by overpressure of the gasket, improves the appearance and image of the product, and reaches or even exceeds the quality of competing products. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 yes Figure 1 Sectional view at AA in the middle;

[0021] Figure 3 yes Figure 2A partial enlarged view of point B in the middle;

[0022] Figure 4 It is a schematic diagram of the structure of the rear cover close to the shell side;

[0023] Figure 5 It is a schematic diagram of the structure of the back cover away from the side of the shell.

[0024] In the figure: 1-housing; 2-rear cover; 3-bolt; 4-limiting platform; 5-sealing gasket. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0027] like Figure 1 to Figure 3 As shown, the sealing structure of the rear cover of the electric coupler of this embodiment includes a shell 1 and a rear cover 2, the shell 1 and the rear cover 2 are connected by bolts 3, a limit platform 4 is provided at the bolt hole on the side of the shell 1 close to the rear cover 2, a sealing gasket 5 is sleeved on the limit platform 4, and the sealing gasket 5 is pressed between the shell 1 and the rear cover 2.

[0028] A limit platform 4 is provided at the bolt hole on one side of the shell 1 close to the rear cover 2 of the utility model, and a sealing gasket 5 is sleeved on the limit platform 4. While ensuring the seal, the limit platform 4 can support the rear cover 2 to avoid the situation where the locking torque of the bolt 3 is unqualified after the sealing gasket 5 is assembled for a certain period of time.

[0029] The height of the limiting platform 4 is less than the thickness of the sealing pad 5. The thickness of the sealing pad 5 is greater than the height of the limiting platform 4, ensuring that the sealing pad 5 can be pressed tightly between the housing 1 and the back cover 2 to achieve a good sealing effect.

[0030] In this embodiment, the height of the limiting platform 4 is 1.7 mm, the thickness of the sealing pad 5 is 2.0 mm, and the difference between the height of the limiting platform 4 and the thickness of the sealing pad 5 is 0.3 mm.

[0031] like Figure 4 and Figure 5 As shown, the area of ​​the rear cover 2 on the side close to the housing 1 corresponding to the limit platform 4 is not painted, the area of ​​the rear cover 2 on the side close to the housing 1 corresponding to the adjacent limit platforms 4 is only painted with primer, and the area of ​​the rear cover 2 on the side close to the housing 1 corresponding to the limit platform 4 close to the center of the rear cover 2 is painted with primer and topcoat. The area of ​​the rear cover 2 on the side away from the housing 1 corresponding to the limit platform 4 is only painted with primer, and the area other than the area on the side away from the rear cover 2 corresponding to the limit platform 4 is painted with primer and topcoat.

[0032] Through the above painting method, while ensuring that the compression of the sealing gasket 5 meets the design requirements, the phenomenon of glue squeezing caused by overpressure of the sealing gasket 5 is avoided, the appearance and image of the product are improved, and the quality reaches or even exceeds that of competing products.

[0033] The thickness of the primer sprayed on the area between the adjacent limit platforms 4 on the side of the rear cover 2 close to the housing 1 is 35-50 μm. The width of the area between the adjacent limit platforms 4 on the side of the rear cover 2 close to the housing 1 is 20 mm.

[0034] In this embodiment, the number of bolt holes on the rear cover 2 is 16. The 16 bolt holes on the rear cover 2 include 4 bolt holes with a diameter of 22 mm and 12 bolt holes with a diameter of 12 mm.

[0035] The present utility model is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present utility model fall within the protection scope of the present utility model.

Claims

1. An electric coupler rear cover sealing structure, characterized in that: The invention comprises a shell (1) and a rear cover (2), wherein the shell (1) and the rear cover (2) are connected by bolts (3), a limit platform (4) is arranged at a bolt hole on a side of the shell (1) close to the rear cover (2), a sealing gasket (5) is sleeved on the limit platform (4), and the sealing gasket (5) is pressed tightly between the shell (1) and the rear cover (2).

2. The sealing structure of the rear cover of an electric coupler according to claim 1, characterized in that: The height of the limiting platform (4) is less than the thickness of the sealing pad (5).

3. The sealing structure of the rear cover of an electric coupler according to claim 2, characterized in that: The difference between the height of the limiting platform (4) and the thickness of the sealing pad (5) is 0.3 mm.

4. The sealing structure of the rear cover of an electric coupler according to claim 3, characterized in that: The height of the limiting platform (4) is 1.7 mm, and the thickness of the sealing pad (5) is 2.0 mm.

5. The electric coupler rear cover sealing structure according to claim 1, characterized in that: The area of ​​the rear cover (2) on the side close to the shell (1) corresponding to the limiting platform (4) is not sprayed with paint, the area of ​​the rear cover (2) on the side close to the shell (1) corresponding to the area between adjacent limiting platforms (4) is only sprayed with primer, and the area of ​​the rear cover (2) on the side close to the shell (1) corresponding to the limiting platform (4) close to the center of the rear cover (2) is sprayed with primer and topcoat.

6. The electric coupler rear cover sealing structure according to claim 5, characterized in that: The thickness of the primer sprayed on the area between adjacent limiting platforms (4) on the side of the rear cover (2) close to the housing (1) is 35 to 50 μm.

7. The electric coupler rear cover sealing structure according to claim 5, characterized in that: The width of the area between adjacent limiting platforms (4) on the side of the rear cover (2) close to the housing (1) is 20 mm.

8. The electric coupler rear cover sealing structure according to claim 1, characterized in that: The area of ​​the rear cover (2) that is away from the housing (1) and corresponds to the limiting platform (4) is only sprayed with primer, and the area of ​​the rear cover (2) that is away from the side corresponding to the limiting platform (4) is sprayed with primer and topcoat.

9. The electric coupler rear cover sealing structure according to claim 1, characterized in that: The number of bolt holes on the rear cover (2) is 16.

10. The electric coupler rear cover sealing structure according to claim 9, characterized in that: The 16 bolt holes on the rear cover (2) are 4 bolt holes with a diameter of 22 mm and 12 bolt holes with a diameter of 12 mm.

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