Sealing structure of actuator motor

Abstract

The utility model discloses an actuator motor sealing structure, and relates to the technical field of automobile parts. Comprising a waterproof ring, the waterproof ring is arranged on a motor output shaft in an actuator shell, a sealing framework is arranged in the waterproof ring, and a cavity is formed in the sealing framework and used for storing lubricating oil; the inner ring of the waterproof ring is symmetrically provided with at least two sealing supporting main lips, and the space between the two sealing supporting main lips is communicated with the cavity in the sealing framework. According to the design mode, the contact area between the sealing supporting main lip and the motor output shaft and between the sealing auxiliary lip and the sealing supporting main lip is effectively increased, lubricating oil can be injected into the cavity by puncturing the oil filler plug through an injector, the oil filler plug faces upwards, after the injector is drawn out, leakage is avoided, and through lubrication of the lubricating oil, the sealing effect is good. And the friction force is reduced, the structure is simple and compact, the economic benefit is met, and the application prospect is wide.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to a sealing structure for an actuator motor. Background Technology

[0002] Concealed door handle actuators are typically used on concealed door handles in automobiles. Installed on the door handle, they drive an actuator rod to perform repetitive linear motion via the forward or reverse rotation of the motor's output shaft, thus opening and closing the concealed door handle. This design fully utilizes the limiting surface formed on the actuator rod and the mating surface within the housing to achieve both anti-rotation and linear movement guidance. However, existing concealed door handle actuators still have the following shortcomings in use:

[0003] The existing concealed door handle actuators on the market have poor sealing performance. The motor output shaft inside the actuator is mostly sealed with a simple sealing ring, which has poor sealing performance and makes it easy for dust and moisture to enter, affecting the performance of the motor and resulting in unsatisfactory performance. Summary of the Invention

[0004] This invention provides a sealing structure for an actuator motor to solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an actuator motor sealing structure, including a waterproof ring, the waterproof ring being disposed on the motor output shaft inside the actuator housing, the waterproof ring having a sealing skeleton inside, the sealing skeleton having a cavity inside for storing lubricating oil, and the inner ring of the waterproof ring having at least two sealing support lips symmetrically arranged, the space between the two sealing support lips being connected to the cavity inside the sealing skeleton.

[0006] Furthermore, the inner ring of the waterproof ring is provided with a sealing secondary lip located on one side of the sealing support main lip.

[0007] Furthermore, the thickness of the sealing secondary lip is less than that of the sealing support primary lip, and the sealing secondary lip and the sealing support primary lip are arranged in a figure-eight shape.

[0008] Furthermore, both the inner ring of the sealing skeleton and the inner ring of the waterproof ring are provided with oil injection holes that are coaxially opposite each other.

[0009] Furthermore, an oil injection plug is nested together on the top of the outer ring of the sealing skeleton and the waterproof ring.

[0010] Furthermore, a sealing groove is provided inside the actuator housing, and the waterproof ring is fitted inside the sealing groove.

[0011] Furthermore, positioning grooves are provided at both the top and bottom of the sealing groove.

[0012] Furthermore, positioning blocks are provided at the top and bottom of the outer ring of the sealing skeleton, and the end of the positioning block away from the sealing skeleton passes through the waterproof ring and extends into the interior of the positioning groove.

[0013] Compared with the prior art, the present invention provides an actuator motor sealing structure, which has the following advantages:

[0014] The actuator motor sealing structure features a figure-eight shape between the sealing secondary lip and the sealing support main lip. This design effectively increases the contact area between the sealing support main lip and the sealing secondary lip and the motor output shaft. Lubricating oil can be injected into the cavity by piercing the oil injection plug with the injection plug facing upwards. After the syringe is withdrawn, there will be no leakage. The lubrication of the oil makes the motor output shaft rotate more flexibly, reduces friction, and features a simple and compact structure that is economical and has broad application prospects. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the waterproof ring structure of this utility model;

[0016] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle;

[0017] Figure 3 This is an exploded view of the actuator housing structure of this utility model.

[0018] In the diagram: 1. Waterproof ring; 11. Sealing skeleton; 12. Positioning block; 13. Sealing support main lip; 14. Sealing secondary lip; 15. Oil injection hole; 16. Oil injection plug; 2. Actuator housing; 21. Sealing groove; 22. Positioning groove; 3. Motor. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-3 This utility model discloses an actuator motor sealing structure, including a waterproof ring 1. The waterproof ring 1 is disposed on the output shaft of the motor 3 inside the actuator housing 2. A sealing skeleton 11 is disposed inside the waterproof ring 1. The sealing skeleton 11 has a cavity inside for storing lubricating oil. At least two sealing support lips 13 are symmetrically arranged on the inner ring of the waterproof ring 1, and the space between the two sealing support lips 13 is connected to the cavity inside the sealing skeleton 11.

[0021] Specifically, the inner ring of the waterproof ring 1 is provided with a sealing secondary lip 14 located on one side of the sealing support main lip 13. The thickness of the sealing secondary lip 14 is less than that of the sealing support main lip 13. The sealing secondary lip 14 and the sealing support main lip 13 are in a figure-eight shape. This design effectively increases the contact area between the sealing support main lip 13 and the sealing secondary lip 14 and the output shaft of the motor 3, preventing dust and moisture from entering the cavity where the motor 3 is installed.

[0022] Specifically, the inner ring of the sealing skeleton 11 and the inner ring of the waterproof ring 1 are both provided with oil injection holes 15 that are coaxially opposite each other. The lubricating oil inside the cavity flows into the space between the sealing support main lip 13 and the sealing secondary lip 14, as well as between the sealing secondary lip 14 and the sealing secondary lip 14, through the oil injection holes 15. The lubrication of the lubricating oil makes the output shaft of the motor 3 rotate more flexibly and reduces friction.

[0023] Specifically, the sealing skeleton 11 and the outer ring of the waterproof ring 1 are nested together with an oil injection plug 16. The oil injection plug 16 can be made of butyl rubber. Lubricating oil can be injected into the cavity by piercing the oil injection plug 16 with a syringe. After the syringe is withdrawn, the butyl rubber plug automatically seals, and the oil injection plug 16 faces upward, so there will be no leakage. The amount of oil injected can be reasonably controlled.

[0024] Specifically, the actuator housing 2 has a sealing groove 21 inside, the waterproof ring 1 is fitted inside the sealing groove 21, the top and bottom of the sealing groove 21 are provided with positioning grooves 22, the top and bottom of the outer ring of the sealing skeleton 11 are provided with positioning blocks 12, the end of the positioning block 12 away from the sealing skeleton 11 passes through the waterproof ring 1 and extends into the interior of the positioning groove 22. The cooperation between the positioning groove 22 and the positioning block 12 prevents the waterproof ring 1 from rotating.

[0025] In summary, the actuator motor sealing structure, with the sealing secondary lip 14 and the sealing support main lip 13 arranged in a figure-eight shape, effectively increases the contact area between the sealing support main lip 13 and the sealing secondary lip 14 and the output shaft of the motor 3. Lubricating oil can be injected into the cavity by piercing the oil injection plug 16 with the syringe facing upwards. After the syringe is withdrawn, there will be no leakage. The lubrication of the oil makes the output shaft of the motor 3 rotate more flexibly, reduces friction, and has a simple and compact structure, which is economical and has broad application prospects.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An actuator motor sealing structure, comprising a waterproof ring (1), characterized in that: The waterproof ring (1) is installed on the output shaft of the motor (3) inside the actuator housing (2). The waterproof ring (1) has a sealing skeleton (11) inside. The sealing skeleton (11) has a cavity inside for storing lubricating oil. The inner ring of the waterproof ring (1) is symmetrically provided with at least two sealing support lips (13), and the space between the two sealing support lips (13) is connected to the cavity inside the sealing skeleton (11).

2. The actuator motor sealing structure according to claim 1, characterized in that: The inner ring of the waterproof ring (1) is provided with a sealing secondary lip (14) located on one side of the sealing support main lip (13).

3. The actuator motor sealing structure according to claim 2, characterized in that: The thickness of the sealing secondary lip (14) is less than that of the sealing support main lip (13), and the sealing secondary lip (14) and the sealing support main lip (13) are arranged in a figure-eight shape.

4. The actuator motor sealing structure according to claim 1, characterized in that: The inner ring of the sealing skeleton (11) and the inner ring of the waterproof ring (1) are both provided with oil injection holes (15) that are coaxially opposite each other.

5. The actuator motor sealing structure according to claim 1, characterized in that: The top of the outer ring of the sealing skeleton (11) and the waterproof ring (1) are together nested with an oil filling plug (16).

6. The actuator motor sealing structure according to claim 1, characterized in that: The actuator housing (2) has a sealing groove (21) inside, and the waterproof ring (1) is fitted inside the sealing groove (21).

7. The actuator motor sealing structure according to claim 6, characterized in that: The sealing groove (21) is provided with positioning grooves (22) at both the top and bottom.

8. The actuator motor sealing structure according to claim 1, characterized in that: The sealing frame (11) is provided with positioning blocks (12) at the top and bottom of the outer ring. The end of the positioning block (12) away from the sealing frame (11) passes through the waterproof ring (1) and extends into the interior of the positioning groove (22).

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