CN113738855A

CN113738855A - Motor gear box sealing structure, automobile electric window motor and automobile

Info

Publication number: CN113738855A
Application number: CN202111106044.9A
Authority: CN
Inventors: 徐莉
Original assignee: Ningbo Jingcheng Motor Co ltd
Current assignee: Ningbo Jingcheng Motor Co ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2021-12-03

Abstract

The invention provides a motor gear box sealing structure, an automobile electric window motor and an automobile, wherein the sealing structure comprises a gear box, an upper cover and a sealing ring; a gear cavity is formed in the gear box, and a gear transmission mechanism is arranged in the gear cavity; a clamping structure for accommodating the sealing ring is formed on the inner wall of the gear cavity; the sealing ring is sleeved in the gear cavity and is positioned on the inner wall; a compression joint structure is arranged on the circumference of the upper cover; the upper cover is pressed on the gear box and is positioned on the upper end surface of the gear cavity; the upper cover is clamped on the outer wall of the gear cavity through a compression joint structure, and simultaneously clamps the sealing ring together with the inner wall in the gear cavity a; the technical scheme provided by the invention has the advantages of compact and reasonable structure, capability of effectively playing a role in sealing and dust prevention, convenience in processing and forming and low cost.

Description

Motor gear box sealing structure, automobile electric window motor and automobile

Technical Field

The invention belongs to the technical field of automobile electric window motors, and particularly relates to a motor gear box sealing structure, an automobile electric window motor and an automobile.

Background

The small motor used for the existing automobile electric window requires that the motor not only can provide good functions of glass lifting, glass descending and the like, but also needs to have waterproof and dustproof functions; the gear box is required to be sealed by the waterproof function, the gear box is required to be hermetically connected through the gear box, the upper cover and the O-shaped ring when being sealed, ideal sealing performance is required to be achieved during sealing connection, and meanwhile cost is saved; the existing sealing modes are two types: one is the upper and lower sealing structure of the O-shaped ring, when in connection, the gear box has poor sealing performance due to the uneven pressing force of the upper cover and the gear box, and water leakage and dust entering can occur; the other is that the sealing ring and the upper cover are integrally formed by injection molding, although the sealing performance of the structure is good, the process is complex and the cost is high due to the need of secondary forming of the upper cover.

Based on the technical problems in the sealing structure of the motor gearbox, no relevant solution is provided; there is therefore a pressing need to find effective solutions to the above problems.

Disclosure of Invention

The invention aims to provide a motor gear box sealing structure, an automobile electric window motor and an automobile aiming at overcoming the defects in the prior art, and aims to solve the problem of sealing of the existing motor gear box.

The invention provides a motor gear box sealing structure which comprises a gear box, an upper cover and a sealing ring, wherein the gear box is provided with a gear box body; a gear cavity is formed in the gear box, and a gear transmission mechanism is arranged in the gear cavity; a clamping structure for accommodating the sealing ring is formed on the inner wall of the gear cavity; the sealing ring is sleeved in the gear cavity and is positioned on the inner wall; a compression joint structure is arranged on the circumference of the upper cover; the upper cover is pressed on the gear box and is positioned on the upper end surface of the gear cavity; the upper cover passes through the crimping structure joint on the outer wall in gear chamber to press from both sides tight sealing washer with the inner wall jointly in gear chamber a simultaneously.

Furthermore, the gear cavity is a cylindrical cavity, and the sealing ring is an O-shaped sealing ring; an annular step is formed on the inner wall, and the inner wall and a compression joint surface in the upper cover can form a squeezing cavity a; the O-shaped sealing ring is arranged in the extrusion cavity a and is positioned on the step, so that the O-shaped sealing ring is clamped between the pressure welding surface and the inner wall.

Furthermore, a clamping part is formed on the outer wall, and a crimping structure of a clamping groove is formed on the circumferential direction of the upper cover; the upper cover can be connected with the clamping portion in a clamping mode through the clamping groove, and therefore the pressing surface inside the upper cover and the inner wall clamp the O-shaped sealing ring together.

Furthermore, the lower end surface of the clamping part is a clamping surface, and the clamping surface is an inclined surface; the lower end surface of the clamping groove forms an inclined pressure joint surface; the press-connection surface is clamped on the clamping surface along the lateral direction of the outer wall, so that the clamping groove is clamped on the clamping part.

Further, the upper cover is of a circular structure; a clamping ring is formed on the upper cover in the circumferential direction, a gap is formed on the clamping ring, and the compression joint structure is positioned on the gap; when the crimping structure was in the joint on the outer wall in gear chamber, the snap ring can cover to the outside of outer wall to form annular seal structure.

Furthermore, two crimping structures are arranged on the circumferential direction of the upper cover, and the two crimping structures are symmetrically arranged on the circumferential direction of the upper cover along the center of the upper cover; the crimping structure and the upper cover are integrally formed in a punching mode; the upper cover connects the crimping structure with the gear box through a stamping forming process.

Furthermore, the gear cavity is a cylindrical cavity, the sealing ring is an O-shaped sealing ring, the upper cover is of a circular structure, and an annular clamping groove compression joint structure is formed in the circumferential direction of the upper cover; the draw-in groove when the pressfitting of upper cover is on the gear box, can whole block on the outer wall to the up end in sealed whole gear chamber.

Correspondingly, the invention further provides an automobile electric window motor which comprises a motor gear box sealing structure, wherein the motor gear box sealing structure is the motor gear box sealing structure.

Further, the automobile electric window motor also comprises a driving motor; the driving motor is arranged in the gear box and is in transmission connection with the gear transmission mechanism.

Correspondingly, the invention also provides an automobile, which comprises an automobile electric window motor, wherein the automobile electric window motor is the automobile electric window motor; the electric window motor of the automobile is arranged on the automobile door and can drive the automobile window to move up and down.

The technical scheme provided by the invention has the advantages of compact and reasonable structure, capability of effectively playing a role in sealing and dust prevention, convenience in processing and forming and low cost.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The invention will be further explained with reference to the drawings, in which:

FIG. 1 is an exploded view of a motor structure of an electric window of an automobile according to the present invention;

FIG. 2 is a cross-sectional view of the gear box and upper cover of the present invention in combination;

FIG. 3 is an enlarged view of portion A of FIG. 2 according to the present invention;

fig. 4 is a schematic view of the structure of the upper cover of the present invention.

In the figure: 1. a gear box; 11. an outer wall; 12. an inner wall; 13. a step; 14. a clamping surface; 15. a clamping part; 2. an upper cover; 21. a crimping structure; 22. a card slot; 23. a hook is clamped; 24. a crimping surface; 25. a snap ring; 3. a seal ring; 4. a motor.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 to 4, the present invention provides a motor gear box sealing structure, which comprises a gear box 1, an upper cover 2 and a sealing ring 3; a gear cavity is formed in the gear box 1, and a gear transmission mechanism is arranged in the gear cavity; a clamping structure for accommodating the sealing ring 3 is formed on the inner wall 12 of the gear cavity; the sealing ring 3 is sleeved in the gear cavity and is positioned on the inner wall 12; a crimping structure 21 is arranged on the circumferential direction of the upper cover 2; the upper cover 2 is pressed on the gear box 1 and is positioned on the upper end surface of the gear cavity; the upper cover 2 is clamped on the outer wall 11 of the gear cavity through a compression joint structure, and simultaneously clamps the sealing ring 3 together with the inner wall 12 in the gear cavity a; according to the motor gear box sealing structure provided by the invention, the clamping structure is formed by the notch of the gear cavity in the gear box, the sealing ring is distributed between the upper cover and the notch of the gear cavity, the upper cover is connected with the gear box by the compression joint structure covered by the two embedded points, and the sealing effect is realized by the middle sealing ring.

Preferably, in combination with the above scheme, as shown in fig. 1 to 4, in this embodiment, the gear cavity is a cylindrical cavity, and the sealing ring 3 is an O-shaped sealing ring; specifically, an annular step 13 is formed on the inner wall 12, and the inner wall 12 and the crimping surface 24 in the upper cover 2 can form a pressing cavity a, so that the pressing cavity a can accommodate an O-shaped sealing ring; further, an O-shaped sealing ring is arranged in the extrusion cavity a and is positioned on the step 13, so that the O-shaped sealing ring is clamped between the pressure welding surface 24 and the inner wall 12 to play a role of sealing; specifically, the gear box 1 is in compression joint with the upper cover 2, the gear box 1 is provided with an inner wall, the O-shaped sealing ring is placed on the inner wall of the gear box, the upper cover 2 is pressed downwards into the gear cavity, and the O-shaped sealing ring is extruded between the compression joint surface 24 of the upper cover 2 and the inner wall of the gear box 1 to play a role in sealing; specifically, the upper cover 2 has two crimping structures 21 thereon, and specifically, the upper cover 2 is connected to the gear box by using a press forming process.

Preferably, with the above solutions, as shown in fig. 1 to 4, the outer wall 11 is formed with the clamping portion 15, and the upper cover 2 is formed with the crimping structure 21 of the clamping groove 22 in the circumferential direction, that is, the clamping groove 22 is used as a preferred embodiment of the crimping structure 21, so that the sealing effect can be achieved, and a good dustproof effect is achieved; specifically, the upper cover 2 can be clamped in the clamping portion 15 through the clamping groove 22, so that the internal pressure contact surface 24 and the inner wall 12 clamp the O-shaped sealing ring together, and a good sealing effect is achieved.

Preferably, in combination with the above solutions, as shown in fig. 1 to 4, the lower end surface of the clamping portion 15 is a clamping surface 14, and the clamping surface 14 is an inclined surface; furthermore, the lower end surface of the clamping groove 22 forms an inclined pressure joint surface 23; specifically, the pressing surface 23 is clamped on the clamping surface 14 along the lateral direction of the outer wall 11, so that the clamping groove 22 is clamped on the clamping portion 15, and the dust-proof sealing effect is good while the installation is convenient.

Preferably, in combination with the above solution, as shown in fig. 1 to 4, the upper cover 2 has a circular structure; a clamping ring 25 is formed on the circumferential direction of the upper cover 2, a gap 26 is formed on the clamping ring 25, and the crimping structure 21 is positioned on the gap 26, namely the crimping structure 21 and the clamping ring 25 are jointly arranged on the circumferential direction of the upper cover 2 and can be buckled on the gear box 1 on the whole to form a sealing structure; specifically, when the crimping structure 21 is clamped on the outer wall 11 of the gear cavity, the snap ring 25 can cover the outer side of the outer wall 11, so that an annular sealing structure is formed.

Preferably, in combination with the above solution, as shown in fig. 1 to 4, two crimping structures 21 are arranged on the circumferential direction of the upper cover 2, and the two crimping structures 21 are symmetrically arranged on the circumferential direction of the upper cover 2 along the center of the upper cover 2; the crimping structure 21 and the upper cover 2 are integrally formed in a stamping mode, the forming process can be reduced in the forming process, and the cost is relatively low.

Preferably, with reference to the above solutions, as shown in fig. 1 to 4, in this embodiment, the gear cavity is a cylindrical cavity, the seal ring 3 is an O-ring, the upper cover 2 is a circular structure, and a press-connection structure 21 of an annular slot 22 is formed in the circumferential direction of the upper cover 2; thus, when the upper cover 2 is pressed on the gear box 1, the clamping groove 22 can be integrally clamped on the outer wall 11, so that the upper end face of the whole gear cavity is sealed.

Correspondingly, in combination with the above scheme, as shown in fig. 1 to 4, the present invention further provides an automotive electric window motor, including a motor gear box sealing structure, wherein the motor gear box sealing structure is the above motor gear box sealing structure; further, the motor for the electric window of the automobile further comprises a driving motor 4; the driving motor 4 is arranged in the gear box 1 and is in transmission connection with the gear transmission mechanism.

Correspondingly, in combination with the above scheme, as shown in fig. 1 to 4, the present invention further provides an automobile, including an automobile electric window motor, the automobile electric window motor being the above automobile electric window motor; the electric window motor of the automobile is arranged on the automobile door and can drive the automobile window to move up and down.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Those skilled in the art can make numerous possible variations and modifications to the described embodiments, or modify equivalent embodiments, without departing from the scope of the invention. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technology of the present invention are within the protection scope of the present invention, unless the content of the technical solution of the present invention is departed from.

Claims

1. The sealing structure of the motor gearbox is characterized by comprising a gear box (1), an upper cover (2) and a sealing ring (3); a gear cavity is formed in the gear box (1), and a gear transmission mechanism is arranged in the gear cavity; a clamping structure for accommodating the sealing ring (3) is formed on the inner wall (12) of the gear cavity; the sealing ring (3) is sleeved in the gear cavity and is positioned on the inner wall (12); a crimping structure (21) is arranged on the circumferential direction of the upper cover (2); the upper cover (2) is pressed on the gear box (1) and is positioned on the upper end face of the gear cavity; the upper cover (2) is clamped on the outer wall (11) of the gear cavity through the compression joint structure, and simultaneously the sealing ring (3) is clamped on the inner wall (12) and the gear cavity (a) together.

2. The motor gearbox sealing structure according to claim 1, wherein the gear cavity is a cylindrical cavity, and the seal ring (3) is an O-ring seal; an annular step (13) is formed on the inner wall (12), and the inner wall (12) and a pressure contact surface (24) in the upper cover (2) can form a pressing cavity (a); the O-ring is arranged in the extrusion cavity (a) and is positioned on the step (13) so as to be clamped between the pressure joint surface (24) and the inner wall (12).

3. The motor gear box sealing structure according to claim 2, wherein a clamping portion (15) is formed on the outer wall (11), and a crimping structure (21) of a clamping groove (22) is formed on the upper cover (2) in the circumferential direction; the upper cover (2) can be clamped in the clamping portion (15) through the clamping groove (22), so that the internal pressure welding surface (24) of the upper cover and the inner wall (12) clamp the O-shaped sealing ring together.

4. The motor gear box sealing structure according to claim 3, wherein a lower end surface of the click portion (15) is a click surface (14), and the click surface (14) is an inclined surface; the lower end surface of the clamping groove (22) forms an inclined pressure joint surface (23); the pressing surface (23) is clamped on the clamping surface (14) along the lateral direction of the outer wall (11), so that the clamping groove (22) is clamped on the clamping part (15).

5. The motor gearbox sealing structure according to claim 2, characterized in that the upper cover (2) is a circular structure; a clamping ring (25) is formed in the circumferential direction of the upper cover (2), a notch (26) is formed in the clamping ring (25), and the compression joint structure (21) is located on the notch (26); crimping structure (21) when the joint is in on outer wall (11) of gear chamber, snap ring (25) can to cover the outside of outer wall (11) to form annular seal structure.

6. The motor gearbox sealing structure according to claim 1, wherein two crimping structures (21) are arranged on the upper cover (2) in the circumferential direction, and the two crimping structures (21) are symmetrically arranged on the upper cover (2) in the circumferential direction along the center of the upper cover (2); the crimping structure (21) and the upper cover (2) are integrally formed in a punching mode; the upper cover 2 connects the crimping structure (21) with the gear box (1) through a stamping forming process.

7. The motor gearbox sealing structure according to claim 1, wherein the gear cavity is a cylindrical cavity, the sealing ring (3) is an O-shaped sealing ring, the upper cover (2) is a circular structure, and a crimping structure (21) of an annular clamping groove (22) is formed on the periphery of the upper cover (2); the clamping groove (22) can be integrally clamped on the outer wall (11) when the upper cover (2) is pressed on the gear box (1), so that the upper end face of the whole gear cavity is sealed.

8. An automotive power window motor including a motor gear box seal structure, wherein the motor gear box seal structure is as claimed in any one of claims 1 to 7.

9. The automotive electric window motor according to claim 8, further comprising a drive motor (4); the driving motor (4) is arranged in the gear box (1) and is in transmission connection with the gear transmission mechanism.

10. An automobile comprising an automobile power window motor, wherein the automobile power window motor is the automobile power window motor according to any one of claims 8 to 9; the automobile electric window motor is arranged on an automobile door and can drive an automobile window to move up and down.