CN108375053B

CN108375053B - Sealing structure of rear cover of automobile headlamp

Info

Publication number: CN108375053B
Application number: CN201611050909.3A
Authority: CN
Inventors: 王德怡
Original assignee: Wuhan Tongchang Automotive Electronic Lighting Co Ltd
Current assignee: Huayu Vision Technology Wuhan Co ltd
Priority date: 2016-11-24
Filing date: 2016-11-24
Publication date: 2020-12-04
Anticipated expiration: 2036-11-24
Also published as: CN108375053A

Abstract

The invention provides a sealing structure of a rear cover of an automobile headlamp, which comprises a rear cover, a sealing ring and a lamp body, wherein the rear cover is provided with a connecting part extending along the left and right directions, and the sealing ring is sleeved on the connecting part; the left end of the connecting part is provided with a first sealing part extending along the inner and outer directions, the right end of the connecting part is detachably connected with the lamp body, and the lamp body is provided with a second sealing part extending along the inner and outer directions; the first sealing part and the second sealing part are tightly abutted against the left side and the right side of the sealing ring respectively. The rear cover and the lamp body are detachably connected, so that the rear cover is convenient to mount and dismount; meanwhile, the first sealing part and the second sealing part are tightly abutted against the left side and the right side of the sealing ring respectively, so that the sealing function of the lamp body is realized; in addition, the invention has simple integral structure and convenient processing.

Description

Sealing structure of rear cover of automobile headlamp

Technical Field

The invention relates to a sealing structure, in particular to a sealing structure of a rear cover of an automobile headlamp.

Background

With the rapid development of the automobile industry, the structure and function of the automobile headlamp are developed comprehensively. Headlamps have not only been required to fulfill their functional requirements, but also to meet both greater functionality and better aesthetics. Many automotive headlamps have become unique and identifying components. Among the performance standards of automotive headlamps, air-tightness is a very important indicator. If the air tightness of the headlamp is poor, the headlamp enters water, and the lamp is fogged, so that the function and the attractiveness of the headlamp are directly affected, and even serious automobile accidents and other consequences are caused. And in the structure of the head lamp, there are one or more rear covers that facilitate disassembly and assembly for maintenance, which is a structure that may seriously affect the airtightness of the head lamp. In order to ensure the airtightness of the head lamp, the rear cover requires a sealing structure during the mounting process.

In a common rear cover sealing structure, an O-ring used for sealing is made of EPDM (ethylene propylene diene monomer). The use of this material does ensure the air-tightness of the headlamp, but the hardness of this material is high, as shA40-shA45, the compression force is high, so that a large torque is required for screwing and unscrewing the rear cover, and the rear cover attachment and detachment torque is excessive. And the aging period of the EPDM material is short, the hardness is obviously increased after the EPDM material is placed for three days, the dismounting moment becomes larger, and inconvenience is brought to the dismounting and the maintenance of the automobile headlamp.

To solve this problem, the solution is to reduce the compression force of the seal ring. Reducing the compressive force can be accomplished by reducing the amount of compression of the seal ring and reducing the hardness of the seal ring.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a sealing structure of a rear cover of an automotive headlamp having a simple structure.

In order to achieve the purpose, the invention provides a sealing structure of a rear cover of an automobile headlamp, which comprises a rear cover, a sealing ring and a lamp body, wherein the rear cover is provided with a connecting part extending along the left-right direction, and the sealing ring is sleeved on the connecting part; the left end of the connecting part is provided with a first sealing part extending along the inner and outer directions, the right end of the connecting part is detachably connected with the lamp body, and the lamp body is provided with a second sealing part extending along the inner and outer directions; the first sealing part and the second sealing part are tightly abutted against the left side and the right side of the sealing ring respectively.

Furthermore, the right end of the connecting part is provided with an installation foot protruding outwards, and the second sealing part is provided with a notch; after the installation foot is embedded from the breach on the second sealing and along circumferential direction connecting portion, installation foot and second sealing joint.

Further, a limiting protrusion is arranged on the right side face of the second sealing portion and is adjacent to the notch.

Furthermore, one end of the limiting protrusion is provided with a locking inclined plane.

Furthermore, one end of the mounting foot is provided with a rotary guide inclined plane.

Furthermore, the sealing ring is made of silicon rubber.

Further, the sealing ring is annular.

Furthermore, the rear cover is provided with a mounting blade.

As described above, the sealing structure of the rear cover of the automobile headlamp according to the present invention has the following advantageous effects:

the rear cover and the lamp body are detachably connected, so that the rear cover is convenient to mount and dismount; meanwhile, the first sealing part and the second sealing part are tightly abutted against the left side and the right side of the sealing ring respectively, so that the sealing function of the lamp body is realized; in addition, the invention has simple integral structure and convenient processing.

Drawings

Fig. 1 is a schematic view of a sealing structure of a rear cover of an automotive headlamp according to the present invention.

Fig. 2 is a schematic structural view of the sealing ring of the present invention mounted on the rear cover.

Description of the element reference numerals

1 rear cover

11 connecting part

12 first seal part

13 mounting foot

131 guide inclined plane

14 mounting blade

2 sealing ring

3 lamp body

30 mounting structure

31 second seal part

311 gap

312 limiting bulge

3121 locking ramp

32 through hole

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

In the embodiment of the invention: as shown in fig. 1, the direction from the center to the outer edge of the gasket 2 is defined as the inward-outward direction, and the left-right direction of the paper surface is defined as the left-right direction.

As shown in fig. 1 and 2, the present invention provides a sealing structure of a rear cover of an automotive headlamp, including a rear cover 1, a gasket 2, and a lamp body 3. The rear cover 1 is provided with a connecting part 11 extending along the left-right direction, and the sealing ring 2 is sleeved on the connecting part 11. The left end of the connecting part 11 is provided with a first sealing part 12 extending along the inner and outer directions, and the right end of the connecting part 11 is detachably connected with the lamp body 3; the lamp body 3 is provided with a second sealing portion 31 extending in the inward-outward direction, and the first sealing portion 12 and the second sealing portion 31 are respectively abutted against the left and right sides of the seal ring 2. The rear cover 1 and the lamp body 3 are detachably connected, so that the rear cover 1 is convenient to mount and dismount; meanwhile, the first sealing part 12 and the second sealing part 31 are respectively and tightly abutted against the left side and the right side of the sealing ring 2, so that the sealing function of the lamp body 3 is realized; in addition, the invention has simple integral structure and convenient processing.

As shown in fig. 1 and 2, the right end of the connecting portion 11 of the present invention is provided with an outwardly protruding mounting leg 13; and the second sealing portion 31 is provided with a notch 311. In the installation process, after the installation leg 13 is inserted into the notch 311 on the second sealing portion 31 and the connection portion 11 is rotated along the circumferential direction, the installation leg 13 is clamped with the second sealing portion 31, that is, the left side surface of the installation leg 13 abuts against the right side surface of the second sealing portion 31. Meanwhile, in the detaching process, the rear cover 1 and the connecting portion 11 are rotated in the circumferential direction until the mounting legs 13 on the connecting portion 11 correspond to the notches 311 on the second sealing portion 31, and then the rear cover 1 is pulled leftward, so that the rear cover 1 is detached from the lamp body 3. The invention adopts the structure to realize the detachable connection of the rear cover 1 and the lamp body 3, and the assembly and the disassembly are convenient. In another embodiment, the right end of the connecting portion 11 is screwed with the lamp body 3. In addition, sealing washer 2 has elastic deformation ability in this application, and when installation foot 13 and second sealing 31 joint, first sealing 12 and second sealing 31 tightly supported with the sealing washer 2 left and right sides respectively to realize sealed effect. The inner wall of the second sealing portion 31 has a through hole 32 to be inserted into the connecting portion 11.

As shown in fig. 1 and 2, the connecting portion 11 has a cylindrical structure, and the sealing ring 2 has a circular ring shape. In this embodiment, there are 4 mounting pins 13, and the 4 mounting pins 13 are distributed in a circular array with the axis of the connecting portion 11 as the center; meanwhile, there are 4 notches 311, and 4 notches 311 correspond to 4 mounting feet 13 respectively. In addition, the diameter of the section of the sealing ring 2 in the embodiment is determined according to the outer diameter of the connecting part 11 on the rear cover 1, so that the sealing requirements of different vehicle lamps can be met.

As shown in fig. 2, the right side surface of the second sealing portion 31 in this embodiment is provided with a limiting protrusion 312 adjacent to the notch 311. Thus, after the mounting leg 13 is inserted into the notch 311 of the second sealing portion 31, in the process of rotating the connecting portion 11 along the circumferential direction, if the rotating direction faces the limiting protrusion 312 corresponding to the notch 311, the mounting leg 13 will abut against the limiting protrusion 312, and the mounting leg 13 cannot be normally clamped with the second sealing portion 31; if the rotation direction is far away from the limiting protrusion 312 corresponding to the notch 311, the mounting leg 13 will be staggered with the notch 311 and normally clamped with the second sealing portion 31, thereby realizing the fixed connection of the rear cover 1 and the lamp body 3. This embodiment adopts above-mentioned structure, guarantees to cover 1 after only following the direction screw in of setting for in the installation, prevents that the screw in direction mistake or screw in are excessive, the installation of being convenient for.

Meanwhile, as shown in fig. 1 and 2, one end of the mounting leg 13 is provided with a rotation guide slope 131. When the connecting portion 11 is rotated, the rotation guide inclined surface 131 of the mounting leg 13 abuts against the side edge of the notch 311 to ensure that the mounting leg 13 smoothly deviates from the notch 311 and abuts against the second sealing portion 31. As shown in fig. 1 and fig. 2, in the present embodiment, the mounting leg 13 is provided with a rotation guiding inclined surface 131 at an end far from the corresponding limiting protrusion 312.

In addition, as shown in fig. 2, one end of the limiting protrusion 312 is provided with a locking inclined surface 3121. In the installation process, as shown in fig. 1, after the mounting leg 13 is staggered from the notch 311 and abuts against the second sealing portion 31, if the connecting portion 11 is continuously rotated, the mounting leg 13 will abut against the limiting protrusion 312, and the mounting leg 13 will slide along the locking inclined surface 3121 and finally tightly abut against the locking inclined surface 3121, so that the first sealing portion 12 and the second sealing portion 31 have stronger mutual approaching acting force, and have stronger extrusion force on the sealing ring 2, thereby ensuring stronger sealing performance of the present invention. In this embodiment, the end of the limiting protrusion 312 far from the corresponding notch 311 is provided with a locking inclined surface 3121.

As shown in fig. 1, the second sealing portion 31, the notch 311, and the stopper projection 312 constitute the mounting structure 30 of the lamp body 3.

In addition, as shown in fig. 1 and 2, the rear cover 1 of the present embodiment is provided with a plurality of mounting blades 14 so as to manually rotate the rear cover 1 during the mounting process.

In addition, the mounting method of the sealing structure of the rear cover of the automobile headlamp comprises the following steps: firstly, the sealing ring 2 is sleeved on the connecting part 11 of the rear cover 1 by utilizing the elasticity of the sealing ring 2, and then the rear cover 1 is screwed into the mounting structure 30 on the lamp body 3 with certain force. The sealing structure of the rear cover of the automobile headlamp ensures the air tightness of the headlamp and is convenient for the disassembly and assembly of the automobile headlamp. Meanwhile, the sealing ring 2 is made of silicon rubber. The silicon rubber has the characteristics of good tolerance, good plasticity, low hardness and the like, the aging period is long, and the hardness is slightly increased after thermal aging; compared with the EPDM material, the compression force of the sealing ring 2 can be effectively reduced, so that the required torque is greatly reduced in the process of screwing the rear cover 1 into and out of the lamp body 3, and the convenience of disassembly and assembly is greatly improved; the working strength of operators is reduced, and the working efficiency of the operators is improved. And the aging period of the silicon rubber sealing ring 2 is long, and the performance of the invention can be kept for a long time.

In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides a lid's seal structure behind vehicle headlamps, includes back lid (1), sealing washer (2) and lamp body (3), its characterized in that: the rear cover (1) is provided with a connecting part (11) extending along the left-right direction, and the sealing ring (2) is sleeved on the connecting part (11); the left end of the connecting part (11) is provided with a first sealing part (12) extending along the inner and outer directions, the right end of the connecting part (11) is detachably connected with the lamp body (3), and the lamp body (3) is provided with a second sealing part (31) extending along the inner and outer directions; the first sealing part (12) and the second sealing part (31) are tightly abutted against the left side and the right side of the sealing ring (2) respectively; the right end of the connecting part (11) is provided with an outward convex mounting foot (13), and the second sealing part (31) is provided with a notch (311); when the mounting foot (13) is embedded from the notch (311) on the second sealing part (31) and the connecting part (11) is rotated along the circumferential direction, the mounting foot (13) is clamped with the second sealing part (31); a limiting bulge (312) is arranged on the right side surface of the second sealing part (31) at a position adjacent to the notch (311); one end of the limiting protrusion (312), which is far away from the corresponding notch (311), is provided with a locking inclined surface (3121), and the mounting foot (13) is tightly abutted against the locking inclined surface (3121); during installation, the mounting foot (13) slides along the locking inclined surface (3121) and finally tightly abuts against the locking inclined surface (3121) so as to enhance the mutual approaching acting force between the first sealing part (12) and the second sealing part (31) and further enhance the extrusion force on the sealing ring (2).

2. A sealing structure of a rear cover of an automotive headlamp according to claim 1, characterized in that: one end of the mounting foot (13) is provided with a rotary guide inclined plane (131).

3. A sealing structure of a rear cover of an automotive headlamp according to claim 1, characterized in that: the sealing ring (2) is made of silicon rubber.

4. A sealing structure of a rear cover of an automotive headlamp according to claim 1, characterized in that: the sealing ring (2) is annular.

5. A sealing structure of a rear cover of an automotive headlamp according to claim 1, characterized in that: and the rear cover (1) is provided with a mounting blade (14).