Double waterproof automobile electric cover actuator with bellows

Abstract

The utility model relates to a kind of double waterproof automobile electric mouth cover executing mechanism with bellows, including shell, the shell inside has and communicates motor chamber and locking chamber being arranged side by side, the locking chamber has locking mouth;Push rod, the push rod rotation lift setting is in locking chamber, and the end with locking pin is extended to locking chamber outside by locking mouth;Sealing cover and bellows are sequentially arranged from inside to outside between the shell and the push rod, and double waterproof connection is formed;The sealing cover is sealed to the push rod and the shell along radial direction, and the bellows is sealed to push rod and shell along axial direction.The utility model has the beneficial effect that: using the double waterproof structure of "sealing cover+bellows", the radial and axial clearance between push rod and shell is sealed respectively, significantly improve waterproof, dustproof performance, avoid rainwater, dust into the inside of actuator and lead to failure.

Description

Technical Field

[0001] This utility model relates to the technical field of protective structures for automotive charging port covers, and in particular to an actuator for an automotive electric charging port cover with a corrugated pipe for double waterproofing. Background Technology

[0002] With the development of the automotive industry, consumers have increasingly higher requirements for automotive products, which indirectly places higher demands on the quality of various aspects of automotive parts, such as durability, stability, and perceived quality. As an exterior and functional component, the charging port cover of new energy vehicles can directly affect the user experience, so its quality is particularly important.

[0003] Currently, the charging port cover of new energy vehicles is open when the car is charging. There is no good solution to protect the actuator, and rainwater, dust and other substances can easily enter the actuator, causing it to malfunction. Even if all-weather protection can be achieved for the actuator, the actuator does not have a locking function, which can easily lead to actuator failure.

[0004] Chinese invention patent application CN114408027A discloses a protective structure for a charging port cover actuator and a new energy vehicle. The protective structure includes an actuator and a protective sleeve. The actuator is mounted on the base of the charging port cover and can extend and retract on the base. The protective sleeve is fitted onto the actuator, with one end locked to the base and the other end clamped to the actuator, thereby sealing the actuator. The protective sleeve can extend and retract with the actuator. The charging port cover actuator protective structure and new energy vehicle provided by this invention can achieve the actuator locking function when the actuator of the charging port is exposed. The protective sleeve and the actuator cooperate well to achieve good sealing and protection. The solution provided by this invention can achieve both all-weather protection of the actuator and locking function on the actuator.

[0005] However, in this protective structure, the protective sleeve is only connected to the actuator from the side, and liquid infiltration cannot be prevented in the axial direction, so the waterproof structure is not perfect. Utility Model Content

[0006] To address the aforementioned problems in the existing technology, this utility model provides an actuator for a car electric charging port cover with a corrugated pipe for double waterproofing. This overcomes the shortcomings of the existing technology, where the protective rubber sleeve only provides side sealing and is prone to axial water leakage. It is particularly suitable for high-frequency use scenarios of charging port covers for new energy vehicles, ensuring the reliability and lifespan of the charging port cover in rainy or harsh environments.

[0007] The above-mentioned problems of this utility model are solved by the following technical solution: An actuator for a car electric hatch with a corrugated pipe for double waterproofing, comprising: The housing has a motor cavity and a locking cavity arranged side by side and communicating inside the housing, and the locking cavity has a locking opening; A push rod, which is rotatably and vertically positioned in the locking cavity, with one end having a locking pin extending out of the locking cavity through the locking opening; A sealing cap and a bellows are sequentially arranged from the inside to the outside between the housing and the push rod to form a double waterproof connection; The sealing cap forms a radial seal on the push rod and the housing, and the bellows forms an axial seal on the push rod and the housing.

[0008] A further provision of the above technical solution is that the sealing cover covers the outer periphery of the locking opening and forms an interference fit with the outer wall of the push rod; The bellows presses the sealing cap tightly against the outer casing.

[0009] A further provision of the above technical solution is as follows: the sealing cover includes a sealing ring that wraps around the outer periphery of the locking opening, and an insert extending from the sealing ring toward the motor cavity side; the outer shell is provided with a groove that matches the insert; the first end of the bellows presses the insert into the groove.

[0010] By adopting the above technical solution, the sealing cover is fitted with the housing groove by the insert strip and pressed by the bellows, forming a double fixation of limiting and pressing, preventing the sealing cover from loosening or shifting.

[0011] A further provision of the above technical solution is that the sealing ring includes a base wrapped around the outer periphery of the locking opening, and a sealing portion extending axially from the base to above the locking opening. The upper end of the sealing portion has a sealing shoulder extending inward, and the sealing shoulder and the push rod are pressed together to form a seal.

[0012] A further feature of the above technical solution is that the sealing part has a constricted structure along the axial direction.

[0013] By adopting the above technical solutions, the constricted structure of the sealing cap and the design of the sealing shoulder achieve efficient sealing within a limited space.

[0014] A further configuration of the above technical solution is as follows: the first end of the bellows is clamped to the outside of the locking opening, and the second end forms a radial engagement with the push rod.

[0015] A further provision of the above technical solution is that: an annular groove is provided on the push rod below the locking pin, the second end of the corrugated tube is bent toward the center to form a waterproof shoulder, and the waterproof shoulder can be inserted into the groove.

[0016] By adopting the above technical solution, the groove of the corrugated pipe and the waterproof shoulder cooperate to form a labyrinthine waterproof path, further preventing liquid infiltration, which is suitable for compact car charging port cover structures.

[0017] A further feature of the above technical solution is that: a mounting part protrudes from the outer periphery of the housing on one side of the locking cavity, and a slot is provided on the side of the mounting part facing the push rod; The first end of the corrugated pipe is provided with a clamping protrusion that extends into the slot.

[0018] A further provision of the above technical solution is that the clamping protrusion is T-shaped and extends axially to the outside of the first end of the bellows.

[0019] By adopting the above technical solution, the T-shaped clamping protrusion of the bellows and the groove design of the shell enhance the connection strength and avoid sealing failure due to vibration or external force.

[0020] A further provision of the above technical solution is that: a pressing shoulder is radially protruding from the first end of the bellows toward the motor cavity, and the pressing shoulder presses the insert strip into the groove.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows: The device employs a dual waterproof structure of "sealed cover + bellows" to seal the radial and axial gaps between the push rod and the housing, significantly improving waterproof and dustproof performance and preventing rainwater and dust from entering the actuator and causing failure. The bellows is fixed at both ends to the housing and the push rod respectively. It can dynamically deform with the extension and retraction of the push rod, which does not affect the normal movement of the actuator, and provides continuous protection to avoid seal fatigue or damage caused by mechanical movement. Through innovative dual-seal design, the dynamic sealing requirements of the actuator and long-term reliability are taken into account, significantly improving the waterproof, dustproof and durability performance of the automotive electric cover actuator, which has clear practical value and promotion significance. Attached Figure Description

[0022] Figure 1 This is an exploded structural diagram of the present invention.

[0023] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0024] Figure 3 for Figure 2 Enlarged structural diagram of part A in the middle.

[0025] Figure 4 for Figure 1 Enlarged structural diagram of part B in the middle.

[0026] Figure 5 for Figure 2 Enlarged structural diagram of part C in the middle.

[0027] Figure 6 This is a schematic diagram of a bellows structure.

[0028] The attached diagram shows the following markers: 100, housing; 101, locking cavity; 102, motor cavity; 110, neck; 111, locking opening; 103, groove; 103.1, stepped groove; 120, mounting position; 121, clamping groove. 200. Push rod; 210. Locking pin; 201. Slot; 300. Sealing cap; 310. Sealing ring; 320. Insert strip; 321. Limiting part; 311. Base; 312. Sealing part; 312.1. Sealing shoulder; 400, Corrugated pipe; 410, Pressing shoulder; 420, Waterproof shoulder; 430, Clamping protrusion; 440, Sleeve. Detailed Implementation

[0029] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0030] like Figure 1-6 As shown in the figure, this embodiment discloses an automotive electric cover actuator with a corrugated pipe for double waterproofing.

[0031] Specific reference Figure 1 and Figure 2 As shown, including The housing 100 has a motor cavity 102 and a locking cavity 101 arranged side by side and communicating inside the housing 100, and the locking cavity 101 has a locking opening 111; Push rod 200, which is rotatably and vertically disposed in locking cavity 101, and has a locking pin 210 at one end extending to the outside of locking cavity 101 through locking port 111; The push rod 200, as a key moving component, is installed in the locking cavity 101 via a rotary lifting mechanism. One end of the push rod 200 is machined with a locking pin 210 structure, which extends precisely to the outside of the housing 100 through the locking port 111 to achieve the locking function.

[0032] A sealing cap 300 and a corrugated pipe 400 are sequentially arranged from the inside to the outside between the housing 100 and the push rod 200 to form a double waterproof connection; The sealing cap 300 forms a radial seal on the push rod 200 and the housing 100, and the bellows 400 forms an axial seal on the push rod 200 and the housing 100.

[0033] The locking cavity 101 has a unique height advantage in its structural design, with its axial height being significantly higher than that of the adjacent motor cavity 102. This design allows the end of the housing 100 in the locking cavity 101 region to naturally form a structural feature that is higher than the end face of the motor cavity 102, thus cleverly forming a neck 110 region for the installation and connection of the sealing cover 300 and the bellows 400.

[0034] The two ends of the bellows 400 are always connected to the housing and the push rod 200. When the push rod 200 extends, the bellows 400 extends; when the push rod 200 retracts, the bellows 400 shortens. This follow-up design ensures that the bellows 400 can always provide dynamic protection for the actuator.

[0035] In this embodiment, the sealing system adopts a dual internal and external arrangement: the bellows 400 serves as the outer protective layer, and the sealing cover 300 serves as the internal sealing element. This combined design provides comprehensive protection for the actuator in both radial and axial dimensions, achieving seamless sealing protection. Specifically, the sealing cover 300 tightly covers the outer periphery of the locking port 111 using an interference fit, forming a precise fit with the outer wall of the push rod 200; the bellows 400, through its structural characteristics, firmly presses the sealing cover 300 onto the housing.

[0036] Specifically, the sealing cap 300 covers the outer periphery of the locking opening 111 and forms an interference fit with the outer wall of the push rod 200; The bellows 400 presses the sealing cap 300 against the outer shell.

[0037] Preferably, the sealing cover 300 is made of high-performance rubber material. This material has good elasticity and sealing performance, effectively wrapping the outer periphery of the locking opening 111, establishing a reliable sealing interface between the movable push rod 200 and the fixed locking opening 111, completely preventing rainwater or dust from entering the actuator through the mating gap. To ensure the reliability of the connection between the sealing cover 300 and the housing, this embodiment is specially designed with a bellows 400 clamping function. The structural characteristics of the bellows 400 apply a continuous and stable clamping force to the sealing cover 300, thereby ensuring the durability of the sealing effect.

[0038] Reference Figure 3 and Figure 4 As shown, the sealing cover 300 includes a sealing ring 310 that wraps around the outer periphery of the locking opening 111, and an insert 320 extending from the sealing ring 310 toward the motor cavity 102. The outer shell is provided with a groove 103 that matches the insert 320. The first end of the bellows 400 presses the insert 320 into the groove 103.

[0039] In this embodiment, the sealing ring 310 is configured as an annular structure to wrap around the upper end of the neck 110 of the outer casing and extend above the neck 110; at the same time, an insert 320 extends from the outer periphery of the sealing ring 310 toward the motor cavity 102. A groove 103 is formed on the upper end face of the outer casing located in the motor cavity 102 to cooperate with the insert 320. The insert 320 is embedded in the groove 103 to form a flat end face.

[0040] Preferably, the end of the insert 320 is specially designed with a limiting part 321 structure, and the end of the groove 103 is correspondingly machined into a stepped groove 103.1 that mates with the limiting part 321. This design allows the limiting part 321 to be precisely embedded in the stepped groove 103.1, effectively restraining any horizontal displacement of the insert 320 and ensuring that the insert 320 remains absolutely fixed within the groove 103. Combined with the continuous pressing action of the bellows 400 on the insert 320, the entire sealing system achieves multiple fixation: the insert 320 is completely confined to the housing, and the sealing ring 310 is kept stable by the traction of the insert 320, thereby ensuring that the sealing ring 310 is securely and reliably installed on the housing 100.

[0041] Specifically, the first end of the bellows 400 is radially protruding with a pressing shoulder 410 facing the motor cavity 102, and the pressing shoulder 410 presses the insert 320 into the groove 103.

[0042] Preferably, the pressing shoulder 410 is an arc-shaped protrusion on the outer periphery of the bellows 400, and the lower end of the arc-shaped protrusion abuts against the end face of the housing 100 to ensure uniform pressure distribution.

[0043] In this embodiment, the sealing ring 310 is specifically configured as follows: the sealing ring 310 includes a base 311 that wraps around the outer periphery of the locking opening 111, and a sealing portion 312 that extends axially from the base 311 to above the locking opening 111. The upper end of the sealing portion 312 extends inwardly with a sealing shoulder 312.1, and the sealing shoulder 312.1 and the push rod 200 are pressed together to form a seal.

[0044] Preferably, the sealing part 312 has a constricted structure along the axial direction.

[0045] Specific reference Figure 3 As shown, the base 311 completely covers the outer peripheral surface of the neck 110, and the sealing part 312 extends upward beyond the locking opening 111, forming a highly efficient sealing interface with the push rod 200 in the area above the locking opening 111. The special design of the sealing shoulder 312.1 makes the inner diameter of the sealing part 312 smaller than the diameter of the locking opening 111, thereby providing an auxiliary blocking effect on the locking opening 111 in the axial direction. The first end of the bellows 400 is fixed to the outer region of the locking opening 111 using a special clamping structure, while the second end forms a radial snap-fit ​​engagement with the push rod 200.

[0046] Specific reference Figure 5 As shown, the push rod 200 has an annular groove 201 located below the locking pin 210. The second end of the corrugated tube 400 is bent towards the center to form a waterproof shoulder 420, and the waterproof shoulder can be inserted into the groove 201.

[0047] Specifically, the slot 201 is positioned below the locking pin 210, bringing the second end of the bellows 400 as close as possible to the end of the push rod 200, thereby protecting most of the push rod 200. A waterproof shoulder 420 extends radially inward horizontally from the opening at the second end of the bellows 400, providing an axial waterproof barrier for the interior of the bellows 400. The cooperation between the waterproof shoulder 420 and the slot 201 forms a complex C-shaped gap structure. This design forces any liquid attempting to penetrate to move along a tortuous C-shaped path to enter the interior of the bellows 400, significantly improving waterproof performance.

[0048] Preferably, a sealing rib extends from the upper end face of the inner end of the waterproof shoulder 420, so that an interference fit is formed between the waterproof shoulder 420 and the groove 210.

[0049] In this embodiment, the connection structure between the second end of the bellows 400 and the housing 100 is as follows: a mounting part 120 is provided on the outer periphery of the housing 100 on one side of the locking cavity 101, and a clamping groove 121 is provided on the side of the mounting part 120 extending toward the push rod 200. The first end of the corrugated pipe 400 is provided with a clamping protrusion 430 that extends into the clamping groove 121.

[0050] Specific reference Figure 4 As shown, the mounting part 120 is located below the neck 110. The first end of the bellows 400 is provided with a straight sleeve 440 to cover the neck 110. The clamping protrusion 430 is provided on the lower outer wall of the sleeve 440 and extends to the lower part of the sleeve 440.

[0051] The sleeve 440 clamps the neck 110, and the clamping protrusion 430 and the mounting part 120 cooperate to form an L-shaped contact part, so that rainwater cannot enter the corrugated pipe 400 along a straight path.

[0052] Preferably, the clamping protrusion 430 is T-shaped and extends axially to the outside of the first end of the bellows 400.

[0053] The protruding part of the clamping protrusion 430 extends downward and is inserted into the clamping groove 121, forming an integral part with the mounting part 120.

[0054] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An actuator for an automotive electric hatch with a corrugated pipe providing double waterproofing, comprising: The housing (100) has a motor cavity (102) and a locking cavity (101) arranged side by side and communicating inside the housing (100), and the locking cavity (101) has a locking port (111); A push rod (200) is rotatably and vertically disposed in the locking cavity (101), and one end of the push rod (200) with a locking pin (210) extends out of the locking cavity (101) through the locking port (111); Its features are: A sealing cap (300) and a bellows (400) are sequentially arranged from the inside to the outside between the housing (100) and the push rod (200) to form a double waterproof connection; The sealing cap (300) forms a radial seal on the push rod (200) and the housing (100), and the bellows (400) forms an axial seal on the push rod (200) and the housing (100).

2. The automotive electric hatch actuator with corrugated pipe double waterproofing according to claim 1, characterized in that: The sealing cap (300) covers the outer periphery of the locking opening (111) and forms an interference fit with the outer wall of the push rod (200); The bellows (400) presses the sealing cap (300) against the outer casing.

3. The automotive electric hatch actuator with corrugated pipe double waterproofing according to claim 2, characterized in that: The sealing cover (300) includes a sealing ring (310) that wraps around the outer periphery of the locking opening (111), and an insert (320) extending from the sealing ring (310) toward the motor cavity (102). The outer shell is provided with a groove (103) that matches the insert (320). The first end of the bellows (400) presses the insert (320) into the groove (103).

4. The automotive electric hatch actuator with corrugated pipe double waterproofing according to claim 3, characterized in that: The sealing ring (310) includes a base (311) wrapped around the outer periphery of the locking opening (111) and a sealing portion (312) extending axially from the base (311) to above the locking opening (111). The upper end of the sealing portion (312) has a sealing shoulder (312.1) extending inward, and the sealing shoulder (312.1) and the push rod (200) are pressed together to seal.

5. The automotive electric hatch actuator with corrugated pipe double waterproofing according to claim 4, characterized in that: The sealing part (312) has a constricted structure along the axial direction.

6. The automotive electric hatch actuator with corrugated pipe double waterproofing according to claim 2, characterized in that: The first end of the bellows (400) is clamped to the outside of the locking port (111), and the second end forms a radial engagement with the push rod (200).

7. The automotive electric hatch actuator with corrugated pipe double waterproofing according to claim 6, characterized in that: The push rod (200) has an annular groove (201) located below the locking pin (210). The second end of the corrugated tube (400) is bent towards the center to form a waterproof shoulder (420), and the waterproof shoulder (420) can be inserted into the groove (201).

8. The automotive electric hatch actuator with corrugated pipe double waterproofing according to claim 6, characterized in that: The outer periphery of the housing (100) is provided with a mounting part (120) protruding on one side of the locking cavity (101), and the mounting part (120) is provided with a clamping groove (121) on the side extending towards the push rod (200); The first end of the corrugated pipe (400) is provided with a clamping protrusion (430) that extends into the clamping groove (121).

9. The automotive electric hatch actuator with corrugated pipe double waterproofing according to claim 8, characterized in that: The clamping protrusion (430) is T-shaped and extends axially to the outside of the first end of the bellows (400).

10. The automotive electric hatch actuator with corrugated pipe double waterproofing according to claim 3, characterized in that: The first end of the bellows (400) is radially protruding with a pressing shoulder (410) facing the motor cavity (102), and the pressing shoulder (410) presses the insert (320) into the groove (103).

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