Actuator, electric charging port cover, and vehicle

Abstract

The present invention relates to an actuator, an electric charging port cover, and a vehicle. The actuator comprises: a motor, a reduction transmission mechanism, a clutch mechanism, and an output shaft. The motor is connected to the clutch mechanism via the reduction transmission mechanism, and the clutch mechanism is connected to the output shaft. When the motor drives the output shaft to rotate, the reduction transmission mechanism and the output shaft are dynamically coupled via the clutch mechanism. When an external force drives the output shaft to rotate, the reduction transmission mechanism and the output shaft are dynamically decoupled via the clutch mechanism. The clutch mechanism comprises an inner rotating shaft mounted and fixed on the output shaft, and an outer rotating shaft mounted on the inner rotating shaft. The outer rotating shaft is connected to the reduction transmission mechanism. When an external force drives the output shaft to rotate, the inner rotating shaft can rotate relative to the outer rotating shaft. The actuator disclosed in the present invention allows the charging port cover to be manually opened or closed in an emergency or power failure, while preventing the output shaft from being subjected to excessive torque, which could damage the reduction transmission mechanism and the motor.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to an actuator, an electric charging port cover, and a vehicle. Background Art

[0002] Automotive technology is advancing rapidly, and new energy vehicles are becoming increasingly popular. Currently, the charging port covers of new energy vehicles on the market mostly use the manual opening method of gasoline vehicles. For ease of use, some new energy vehicles use automatic opening and closing charging ports, which are controlled by an actuator with a motor.

[0003] To prevent the charging port cover from being accidentally opened in situations such as sharp turns or emergency braking, a worm gear structure is usually used between the transmission mechanism of the motor and the actuator to achieve a self-locking function for the charging port cover. However, this makes it impossible to manually open or close the charging port cover in an emergency or power failure. In addition, when the charging port cover is subject to external interference, the actuator is easily overloaded, causing damage to the internal mechanical structure or reducing its service life. Summary of the Invention

[0004] The object of the present invention is to provide an actuator, an electric charging port cover and a vehicle to solve the above problems.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present application provides an actuator comprising a motor, a reduction transmission mechanism, a clutch mechanism, and an output shaft, wherein the motor is transmission-connected to the clutch mechanism via the reduction transmission mechanism, the clutch mechanism is transmission-connected to the output shaft, and the motor and the reduction transmission mechanism are in one-way transmission connection;

[0007] When the motor drives the output shaft to rotate, the clutch mechanism couples the reduction transmission mechanism with the output shaft; when an external force drives the output shaft to rotate, the clutch mechanism decouples the reduction transmission mechanism from the output shaft.

[0008] The clutch mechanism includes an inner rotating shaft sleeved and fixed on the output shaft, and an outer rotating shaft sleeved on the inner rotating shaft, wherein the outer rotating shaft is in transmission connection with the reduction transmission mechanism, and when an external force drives the output shaft to rotate, the inner rotating shaft can rotate relative to the outer rotating shaft;

[0009] The outer shaft is provided with an outer ring groove along the axial direction, and the outer shaft comprises an inner ring portion, a connecting portion and an outer ring portion surrounding and forming the outer ring groove;

[0010] Wherein, the inner ring portion is sleeved on the inner rotating shaft, the outer ring portion is in transmission connection with the reduction transmission mechanism, and the connecting portion is connected between the inner ring portion and the outer ring portion;

[0011] A convex portion is provided on the outer peripheral wall of the inner rotating shaft, and the convex portion is provided in the outer ring groove. An inner ring groove for accommodating the inner ring portion is formed between the convex portion and the outer peripheral wall of the inner rotating shaft, and the outer wall of the inner ring portion abuts against the inner wall of the inner ring groove.

[0012] Optionally, the outer diameter of the outer ring groove is larger than the outer diameter of the protrusion, and the clutch mechanism also includes a ring shaft arranged between the inner rotating shaft and the outer rotating shaft, at least a portion of the ring shaft is arranged in the outer ring groove, and the ring shaft is sleeved on the inner rotating shaft, and the outer peripheral wall of the ring shaft abuts against the outer rotating shaft.

[0013] Optionally, the ring shaft includes a main body portion and an extension portion, the main body portion abuts between the outer peripheral wall of the inner rotating shaft and the inner wall of the outer ring portion, and the extension portion abuts between the outer peripheral wall of the protrusion and the inner wall of the outer ring portion;

[0014] An arc-shaped protrusion is provided on the outer peripheral wall of the extension portion, and an arc-shaped groove matching the arc-shaped protrusion is opened on the inner wall of the outer ring portion.

[0015] Optionally, the reduction transmission mechanism includes a worm sleeved on the output end of the motor, a first reduction gear meshed with the worm, and a second reduction gear meshed with the first reduction gear, wherein the second reduction gear meshes with the outer shaft;

[0016] Wherein, along the projection perpendicular to the axial direction of the outer shaft, the meshing position of the second reduction gear and the outer shaft at least partially overlaps with the meshing position of the first reduction gear and the worm.

[0017] Optionally, the actuator further includes a housing, the housing including a first shell and a second shell, a receiving cavity is formed between the first shell and the second shell, and the motor, the reduction transmission mechanism and the clutch mechanism are all disposed in the receiving cavity;

[0018] One end of the output shaft is arranged in the accommodating cavity, and the other end of the output shaft extends through the first shell to the outside of the accommodating cavity. An angle sensing device is provided at one end of the output shaft, and the angle sensing device is used to detect the rotation angle of the output shaft. The angle sensing device is electrically connected to the electronic control unit that controls the motor.

[0019] Optionally, the first housing is plate-shaped. When assembling the actuator, the motor, the reduction transmission mechanism, the clutch mechanism, and the output shaft are first assembled on the first housing, and then the second housing is assembled with the first housing.

[0020] A plurality of female buckles are provided on the edge of the first shell, and a plurality of stoppers matching the female buckles are provided on the edge of the second shell. The first shell and the second shell are connected by the female buckles and the stoppers.

[0021] Optionally, a sealing groove is provided along the position where the first shell butts against the second shell, and a sealing edge matching the sealing groove is provided on the second shell, wherein the thickness of the sealing edge is less than the thickness of the main body of the second shell;

[0022] A baffle is further provided in the accommodating cavity, and a plurality of through holes are opened on the baffle, and the through holes are used for the conductive wires and the conductive pins of the motor and the angle sensing device to pass through;

[0023] The shell also includes a guide member, which is provided with a plurality of guide holes for the wires to pass through. The second shell is provided with a notch that matches the guide member. The guide member is provided with a tenon along the peripheral wall at a position corresponding to the notch, and the guide member is clamped to the second shell through the tenon; the guide member is provided with a tenon at one end close to the first shell, and the guide member is clamped to the sealing groove through the tenon.

[0024] In a second aspect, the present application provides an electric charging port cover, comprising the above-mentioned actuator and a charging port cover, wherein the rotating shaft of the charging port cover is drivingly connected to the output shaft.

[0025] In a third aspect, the present application provides a vehicle comprising the above-mentioned electric charging port cover, and further comprising an electronic control unit, wherein the electronic control unit is used to control the start and stop of the motor.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] When the actuator is operating normally, the power output by the motor is transmitted to the output shaft through the reduction transmission mechanism and the clutch mechanism, and the output shaft is connected to the rotating shaft of the charging port cover, thereby realizing automatic opening and closing of the charging port cover; when an external force (such as manually opening or closing the charging port cover) drives the output shaft to rotate, due to the one-way transmission connection between the motor and the reduction transmission mechanism, the outer rotating shaft connected to the reduction transmission mechanism is in a relatively stationary state, while the inner rotating shaft fixed to the output shaft can rotate relative to the outer rotating shaft (at this time, the external force is greater than the friction between the inner rotating shaft and the outer rotating shaft), thereby realizing power decoupling of the output shaft and the reduction transmission mechanism, thereby allowing the charging port cover to be manually opened or closed in an emergency or power failure, and at the same time preventing the output shaft from being subjected to excessive torque and causing damage to the reduction transmission mechanism and the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] The structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not intended to limit the conditions under which the present invention can be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportional relationships, or adjustments in size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and objectives that can be achieved by the present invention.

[0030] Figure 1 is an exploded view of the actuator in this embodiment;

[0031] Figure 2 Schematic diagram of the structure of the actuator in this embodiment;

[0032] Figure 3 is a cross-sectional view of the clutch mechanism in this embodiment;

[0033] Figure 4 : is an exploded view of the clutch mechanism in this embodiment;

[0034] Figure 5 is an exploded view of the actuator in this embodiment from another angle;

[0035] Figure 6 Schematic diagram of the structure of the guide member in this embodiment.

[0036] Description of reference numerals:

[0037] 10. Motor;

[0038] 20. Reduction transmission mechanism; 21. Worm; 22. First reduction gear; 23. Second reduction gear;

[0039] 30. Clutch mechanism; 31. Inner shaft; 310. Inner ring groove; 311. Protrusion; 32. Outer shaft; 320. Outer ring groove; 321. Inner ring portion; 322. Connecting portion; 323. Outer ring portion; 3230. Arc-shaped groove; 33. Ring shaft; 331. Main body; 332. Extension portion; 3321. Arc-shaped protrusion;

[0040] 40. Output shaft;

[0041] 50. Housing; 51. First housing; 511. Female buckle; 512. Sealing groove; 52. Second housing; 521. Stopper; 522. Sealing edge; 53. Guide; 530. Guide hole; 531. Tenon; 532. Tenon;

[0042] 60. Angle sensing device;

[0043] 70. Baffle; 71. Through hole. DETAILED DESCRIPTION

[0044] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally located component.

[0046] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0047] Reference Figures 1 to 6The actuator disclosed in this embodiment includes: a motor 10, a reduction transmission mechanism 20, a clutch mechanism 30, and an output shaft 40. The motor 10 is transmission-connected to the clutch mechanism 30 via the reduction transmission mechanism 20, and the clutch mechanism 30 is transmission-connected to the output shaft 40. The motor 10 and the reduction transmission mechanism 20 are transmission-connected in a one-way manner (i.e., the motor 10 can drive the reduction transmission mechanism 20, but the reduction transmission mechanism 20 cannot drive the motor 10 in reverse).

[0048] When the motor 10 drives the output shaft 40 to rotate, the clutch mechanism 30 couples the reduction transmission mechanism 20 with the output shaft 40; when an external force drives the output shaft 40 to rotate, the clutch mechanism 30 decouples the reduction transmission mechanism 20 from the output shaft 40.

[0049] The clutch mechanism 30 includes an inner rotating shaft 31 which is sleeved and fixed on the output shaft 40, and an outer rotating shaft 32 which is sleeved on the inner rotating shaft 31. The outer rotating shaft 32 is in transmission connection with the reduction transmission mechanism 20. When the output shaft 40 is driven to rotate by external force, the inner rotating shaft 31 can rotate relative to the outer rotating shaft 32.

[0050] When the actuator is operating normally, the power output by the motor 10 is transmitted to the output shaft 40 through the reduction gear mechanism 20 and the clutch mechanism 30. The output shaft 40 is transmission-connected to the rotating shaft of the charging port cover, thereby realizing automatic opening and closing of the charging port cover. When an external force (such as manually opening or closing the charging port cover) drives the output shaft 40 to rotate, due to the one-way transmission connection between the motor 10 and the reduction gear mechanism 20, the outer rotating shaft 32 transmission-connected to the reduction gear mechanism 20 is in a relatively stationary state, while the inner rotating shaft 31 fixed to the output shaft 40 can rotate relative to the outer rotating shaft 32 (at this time, the external force is greater than the friction between the inner rotating shaft 31 and the outer rotating shaft 32), thereby realizing power decoupling of the output shaft 40 from the reduction gear mechanism 20. This allows manual opening or closing of the charging port cover in an emergency or power failure, while preventing the output shaft 40 from being subjected to excessive torque, which could cause damage to the reduction gear mechanism 20 and the motor 10.

[0051] It should be noted that this actuator is not only suitable for the automatic opening and closing of charging or fuel filler caps, but can also be used in other automatic control systems, such as the automatic opening and closing systems of car windows, doors, trunks, or furniture door panels.

[0052] Reference Figure 3Furthermore, the outer shaft 32 is axially provided with an outer ring groove 320, and the outer shaft 32 includes an inner ring portion 321, a connecting portion 322 and an outer ring portion 323 that surround the outer ring groove 320; wherein the inner ring portion 321 is sleeved on the inner shaft 31, the outer ring portion 323 is transmission-connected to the reduction transmission mechanism 20, and the connecting portion 322 is connected between the inner ring portion 321 and the outer ring portion 323; a convex portion 311 is provided on the outer peripheral wall of the inner shaft 31, the convex portion 311 is arranged in the outer ring groove 320, and an inner ring groove 310 for accommodating the inner ring portion 321 is formed between the convex portion 311 and the outer peripheral wall of the inner shaft 31, and the outer wall of the inner ring portion 321 abuts against the inner wall of the inner ring groove 310.

[0053] The inner ring portion 321, outer ring portion 323, and connecting portion 322 of the outer shaft 32 cooperate with the protrusion 311 and inner groove 310 of the inner shaft 31 to stabilize the operation of the clutch mechanism 30, effectively distributing load and friction, reducing looseness and wear, and improving the long-term stability of the actuator. The integrated design of the protrusion 311 and inner shaft 31, as well as the precise fit between the inner groove 310 and the outer groove 320, not only allows for precise component positioning but also provides a certain degree of assembly tolerance, allowing for correct assembly even with minor deviations. This simplifies the manufacturing and assembly process and reduces production costs.

[0054] Reference Figure 3 and Figure 4 , wherein the outer diameter of the outer ring groove 320 is larger than the outer diameter of the protrusion 311, and the clutch mechanism 30 also includes a ring shaft 33 arranged between the inner rotating shaft 31 and the outer rotating shaft 32, at least part of the ring shaft 33 is arranged in the outer ring groove 320, and the ring shaft 33 is sleeved on the inner rotating shaft 31, and the outer peripheral wall of the ring shaft 33 abuts the outer rotating shaft 32.

[0055] The ring shaft 33, acting as a stable contact point between the inner and outer rotating shafts 31 and 32, enhances the stability of power transmission during clutch operation. The design of the ring shaft 33 allows for smooth switching from power coupling to power decoupling when driven by the motor 10 and subjected to external forces. This design allows the actuator to operate more smoothly in different states, reducing impact or damage caused by switching states. Because the outer diameter of the outer ring groove 320 is larger than that of the protrusion 311, and the ring shaft 33 is included, this structural design provides a certain degree of tolerance, allowing the diameter of the ring shaft 33, and thus the decoupling sensitivity, to be adjusted according to actual operating conditions.

[0056] Reference Figure 3 and Figure 4Furthermore, the ring shaft 33 includes a main body portion 331 and an extension portion 332. The main body portion 331 abuts between the outer peripheral wall of the inner rotating shaft 31 and the inner wall of the outer ring portion 323, and the extension portion 332 abuts between the outer peripheral wall of the convex portion 311 and the inner wall of the outer ring portion 323; and an arc-shaped protrusion 3321 is provided on the outer peripheral wall of the extension portion 332, and an arc-shaped groove 3230 matching the arc-shaped protrusion 3321 is provided on the inner wall of the outer ring portion 323.

[0057] The cooperation between the arc-shaped protrusion 3321 and the arc-shaped groove 3230 allows the ring shaft 33 to be mechanically locked with the outer shaft 32, ensuring a stable connection between the inner shaft 31, the outer shaft 32 and the ring shaft 33; at the same time, this design facilitates assembly and maintenance, which can reduce the complexity of assembly during production and the labor and time required for maintenance.

[0058] Reference Figure 1 and Figure 2 Furthermore, the reduction transmission mechanism 20 includes a worm 21 sleeved on the output end of the motor 10, a first reduction gear 22 meshing with the worm 21 (including a first worm gear input part and a first gear output part, the worm 21 meshes with the first worm gear input part), and a second reduction gear 23 meshing with the first reduction gear 22 (including a second gear input part and a second gear output part, the first gear output part and the second gear input part), and the second reduction gear 23 (the second gear output part) meshes with the outer shaft 32; the self-locking function of the reduction transmission mechanism 20 is realized by the transmission of the worm 21, and the output speed can be greatly reduced while the output torque is increased through the first reduction gear 22 and the second reduction gear 23, so that a motor 10 with smaller power and volume can be used, which is very beneficial for various applications requiring large torque drive (such as opening and closing the vehicle charging port cover).

[0059] Reference Figure 2 , wherein, along the projection perpendicular to the axial direction of the outer shaft 32, the meshing position of the second reduction gear 23 (the second gear output portion) and the outer shaft 32 at least partially overlaps with the meshing position of the first reduction gear 22 (the first worm gear input portion) and the worm 21. The design of the meshing position makes the spatial arrangement of the reduction transmission mechanism 20 more compact, which is conducive to reducing the overall volume of the actuator.

[0060] Reference Figure 5Furthermore, the actuator also includes a housing 50, which includes a first shell 51 and a second shell 52. An accommodating cavity is formed between the first shell 51 and the second shell 52, and the motor 10, the reduction transmission mechanism 20 and the clutch mechanism 30 are all arranged in the accommodating cavity; one end of the output shaft 40 is arranged in the accommodating cavity, and the other end of the output shaft 40 passes through the first shell 51 and extends to the outside of the accommodating cavity, and an angle sensing device 60 is provided at one end of the output shaft 40, and the angle sensing device 60 is used to detect the rotation angle of the output shaft 40, and the angle sensing device 60 is electrically connected to the electronic control unit that controls the motor 10.

[0061] If the charging port cover is obstructed by external forces while the motor 10 is controlling the automatic opening and closing of the charging port cover, the motor 10 will remain energized, causing prolonged wear of the clutch mechanism 30 and shortening the life of the actuator. An angle sensor 60 is provided at one end of the output shaft 40 to accurately monitor the rotation angle of the output shaft 40 (i.e., the opening angle of the charging port cover) and transmit the rotation angle signal to the electronic control unit (ECU) that controls the motor 10. The ECU then powers the motor 10 on and off based on the angle signal, thereby preventing wear of the reduction gear mechanism 20 and clutch mechanism 30 caused by the motor 10 being energized for an extended period of time and extending the life of the actuator. For example, if the angle sensor 60 detects that the opening angle of the charging port cover remains unchanged for more than three seconds, or detects that the charging port cover has reached the open / closed position, the ECU will de-energize the motor 10 to prevent prolonged wear of the reduction gear mechanism 20 and clutch mechanism 30.

[0062] Reference Figure 5 Furthermore, the first housing 51 is plate-shaped. When assembling the actuator, the motor 10, the reduction gear mechanism 20, the clutch mechanism 30, and the output shaft 40 are first assembled on the first housing 51, and then the second housing 52 is assembled with the first housing 51. This makes the assembly of the actuator more convenient and efficient.

[0063] A plurality of female buckles 511 are provided on the edge of the first shell 51, and a plurality of stoppers 521 matching the female buckles 511 are provided on the edge of the second shell 52. The first shell 51 and the second shell 52 are snap-connected by the female buckles 511 and the stoppers 521. The snap-connecting mechanism using the female buckles 511 and the stoppers 521 can enable the shell parts to be assembled together quickly and accurately, reducing the difficulty and time of assembly, thereby improving production efficiency.

[0064] Reference Figure 5Furthermore, a sealing groove 512 is provided along the position where the first shell 51 butts against the second shell 52, and a sealing edge 522 is provided on the second shell 52 to match the sealing groove 512, and the thickness of the sealing edge 522 is less than the thickness of the main part of the second shell 52; the design of the sealing groove 512 and the sealing edge 522 can provide better waterproof and dustproof effects, protecting the internal components of the actuator from the influence of external environmental factors, thereby extending the service life.

[0065] Reference Figure 5 A baffle 70 is further provided in the accommodating cavity, and a plurality of through holes 71 are provided on the baffle 70, through which the wires and the conductive pins of the motor 10 and the angle sensing device 60 pass; the housing 50 also includes a guide member 53, and a plurality of guide holes 530 are provided on the guide member 53 for the wires to pass through; the use of the baffle 70 and the guide member 53 can prevent the wires from being entangled in the reduction transmission mechanism 20, which helps to manage and protect the electrical connection of the circuit.

[0066] Reference Figure 5 and Figure 6 A notch matching the guide member 53 is provided on the second shell 52, and a tenon groove 531 is provided along the peripheral wall at a position corresponding to the notch of the guide member 53, and the guide member 53 is clamped to the second shell 52 through the tenon groove 531; a tenon 532 is provided at one end of the guide member 53 close to the first shell 51, and the guide member 53 is clamped to the sealing groove 512 through the tenon 532; the positioning and connection of the guide member 53 are achieved by the guidance and clamping method of the groove and tenon structure, which can greatly reduce the complexity and time of assembly compared to the traditional screw fixing method.

[0067] The electric charging port cover disclosed in this embodiment includes the above-mentioned actuator and a charging port cover, and the rotating shaft of the charging port cover is transmission-connected to the output shaft 40.

[0068] The vehicle disclosed in this embodiment includes the above-mentioned electric charging port cover and an electronic control unit, which is used to control the start and stop of the motor 10.

[0069] When the charging port cover needs to be opened, a start signal is sent to the motor 10 through the electronic control unit. After receiving the start signal, the motor 10 starts to rotate, thereby driving the charging port cover to rotate and exposing the charging port. At this time, the user can insert the charging gun into the charging port to charge the vehicle; when an external force (such as manually opening or closing the charging port cover) drives the output shaft 40 to rotate, the inner rotating shaft 31 fixed to the output shaft 40 can rotate relative to the outer rotating shaft 32, thereby realizing power decoupling of the output shaft 40 and the reduction transmission mechanism 20, allowing the charging port cover to be manually opened or closed in an emergency or power failure, and at the same time preventing the output shaft 40 from being subjected to excessive torque and causing damage to the reduction transmission mechanism 20 and the motor 10.

[0070] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An actuator, characterized in that: The invention comprises a motor (10), a reduction transmission mechanism (20), a clutch mechanism (30), and an output shaft (40), wherein the motor (10) is connected to the clutch mechanism (30) through the reduction transmission mechanism (20), the clutch mechanism (30) is connected to the output shaft (40), and the motor (10) is connected to the reduction transmission mechanism (20) in a one-way transmission manner; When the motor (10) drives the output shaft (40) to rotate, the clutch mechanism (30) causes the reduction transmission mechanism (20) and the output shaft (40) to be dynamically coupled; when an external force drives the output shaft (40) to rotate, the clutch mechanism (30) causes the reduction transmission mechanism (20) and the output shaft (40) to be dynamically decoupled; The clutch mechanism (30) includes an inner rotating shaft (31) sleeved and fixed on the output shaft (40), and an outer rotating shaft (32) sleeved on the inner rotating shaft (31), wherein the outer rotating shaft (32) is in transmission connection with the reduction transmission mechanism (20), and when an external force drives the output shaft (40) to rotate, the inner rotating shaft (31) can rotate relative to the outer rotating shaft (32); The outer rotating shaft (32) is provided with an outer ring groove (320) along the axial direction, and the outer rotating shaft (32) comprises an inner ring portion (321) surrounding and forming the outer ring groove (320), a connecting portion (322), and an outer ring portion (323); The inner ring portion (321) is sleeved on the inner rotating shaft (31), the outer ring portion (323) is in transmission connection with the reduction transmission mechanism (20), and the connecting portion (322) is connected between the inner ring portion (321) and the outer ring portion (323); A convex portion (311) is provided on the outer peripheral wall of the inner rotating shaft (31), and the convex portion (311) is provided in the outer annular groove (320). An inner annular groove (310) for accommodating the inner annular portion (321) is formed between the convex portion (311) and the outer peripheral wall of the inner rotating shaft (31), and the outer wall of the inner annular portion (321) abuts against the inner wall of the inner annular groove (310).

2. The actuator according to claim 1, characterized in that The outer diameter of the outer ring groove (320) is greater than the outer diameter of the protrusion (311). The clutch mechanism (30) further includes a ring shaft (33) arranged between the inner rotating shaft (31) and the outer rotating shaft (32). At least a portion of the ring shaft (33) is arranged in the outer ring groove (320), and the ring shaft (33) is sleeved on the inner rotating shaft (31). The outer peripheral wall of the ring shaft (33) abuts against the outer rotating shaft (32).

3. The actuator according to claim 2, characterized in that The ring shaft (33) includes a main body (331) and an extension portion (332), wherein the main body (331) abuts between the outer peripheral wall of the inner rotating shaft (31) and the inner wall of the outer ring portion (323), and the extension portion (332) abuts between the outer peripheral wall of the convex portion (311) and the inner wall of the outer ring portion (323); An arc-shaped protrusion (3321) is provided on the outer peripheral wall of the extension portion (332), and an arc-shaped groove (3230) matching the arc-shaped protrusion (3321) is provided on the inner wall of the outer ring portion (323).

4. The actuator according to claim 1, characterized in that The reduction transmission mechanism (20) comprises a worm (21) sleeved on the output end of the motor (10), a first reduction gear (22) meshed with the worm (21), and a second reduction gear (23) meshed with the first reduction gear (22), wherein the second reduction gear (23) meshes with the outer shaft (32); Wherein, along the projection perpendicular to the axial direction of the outer shaft (32), the meshing position of the second reduction gear (23) and the outer shaft (32) at least partially overlaps with the meshing position of the first reduction gear (22) and the worm (21).

5. The actuator according to claim 1, characterized in that The actuator further includes a housing (50), the housing (50) including a first housing (51) and a second housing (52), an accommodating cavity being formed between the first housing (51) and the second housing (52), the motor (10), the reduction transmission mechanism (20), and the clutch mechanism (30) being arranged in the accommodating cavity; One end of the output shaft (40) is arranged in the accommodating cavity, and the other end of the output shaft (40) passes through the first shell (51) and extends to the outside of the accommodating cavity. An angle sensing device (60) is provided at one end of the output shaft (40), and the angle sensing device (60) is used to detect the rotation angle of the output shaft (40). The angle sensing device (60) is electrically connected to an electronic control unit that controls the motor (10).

6. The actuator according to claim 5, characterized in that The first housing (51) is plate-shaped. When assembling the actuator, the motor (10), the reduction transmission mechanism (20), the clutch mechanism (30), and the output shaft (40) are first assembled on the first housing (51), and then the second housing (52) is assembled with the first housing (51). A plurality of female buckles (511) are provided on the edge of the first shell (51), and a plurality of stoppers (521) matching the female buckles (511) are provided on the edge of the second shell (52), and the first shell (51) and the second shell (52) are snap-connected via the female buckles (511) and the stoppers (521).

7. The actuator according to claim 6, characterized in that A sealing groove (512) is provided along a position where the first shell (51) butts against the second shell (52), and a sealing edge (522) matching the sealing groove (512) is provided on the second shell (52), wherein the thickness of the sealing edge (522) is less than the thickness of the main body of the second shell (52); A baffle (70) is further provided in the accommodating cavity, and a plurality of through holes (71) are provided on the baffle (70), wherein the through holes (71) are for wires and conductive pins of the motor (10) and the angle sensing device (60) to pass through. The housing (50) further comprises a guide member (53), the guide member (53) being provided with a plurality of guide holes (530) for the wires to pass through, the second shell (52) being provided with a notch matching the guide member (53), the guide member (53) being provided with a mortise (531) along a peripheral wall at a position corresponding to the notch, the guide member (53) being engaged with the second shell (52) via the mortise (531); the guide member (53) being provided with a tenon (532) at one end close to the first shell (51), the guide member (53) being engaged with the sealing groove (512) via the tenon (532).

8. An electric charging port cover, comprising the actuator according to any one of claims 1 to 7, characterized in that: It also includes a charging port cover, the rotating shaft of the charging port cover is in transmission connection with the output shaft (40).

9. A vehicle comprising the electric charging port cover according to claim 8, characterized in that: It also includes an electronic control unit, which is used to control the start and stop of the motor (10).

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