Opening cover assembly and vehicle

Abstract

The invention discloses a covering cap assembly and a vehicle. The covering cap assembly comprises a covering cap and an actuator connected with the covering cap. The actuator comprises a motor and a bidirectional transmission mechanism. The actuator is connected with the covering cap. The motor comprises a motor shaft. The bidirectional transmission mechanism is connected with the motor shaft and the covering cap and is configured to transmit power bidirectionally between the motor shaft and the covering cap. When a first external force for opening the covering cap is applied to the covering cap in the closed position, the first external force can drive the motor shaft to rotate in the first rotating direction through the bidirectional transmission mechanism so as to open the covering cap. When second external force for closing the covering cap is applied to the covering cap in the opening position, the second external force can drive the motor shaft to rotate in the second rotating direction through the bidirectional transmission mechanism so as to close the covering cap, the minimum value of the second external force is smaller than the minimum value of the first external force, and the first rotating direction is opposite to the second rotating direction.

Description

Technical Field

[0001] The present application relates to the field of flap technology, and in particular to a flap assembly and a vehicle. Background Art

[0002] There is an electric door actuator on a vehicle fuel tank cover or charging box cover. The driving mechanism in the actuator can drive the fuel tank cover or charging box cover to open and close through an output device; manually pressing the fuel tank cover or charging box cover to apply a certain torque can manually open and close the fuel tank cover or charging box cover. However, when the user manually moves the cover, a relatively large sudden force is required to forcibly close the cover, and the forced closing experience is poor. Summary of the invention

[0003] The present application provides a cover assembly and a vehicle, wherein a second external force for closing the cover is smaller than a first external force for opening the cover and can drive a motor shaft to rotate, so as to at least partially solve the above technical problems.

[0004] According to a first aspect of the present application, the present application provides a mouth cover assembly, comprising:

[0005] flap; and

[0006] An actuator is connected to the cover and comprises:

[0007] a motor, including a motor shaft; and

[0008] a bidirectional transmission mechanism connected to the motor shaft and the mouth cover and configured to transmit power bidirectionally between the motor shaft and the mouth cover;

[0009] Wherein, when a first external force for opening the flap is applied to the flap in the closed position, the first external force can drive the motor shaft to rotate along a first rotation direction through the bidirectional transmission mechanism to open the flap; when a second external force for closing the flap is applied to the flap in the open position, the second external force can drive the motor shaft to rotate along a second rotation direction through the bidirectional transmission mechanism to close the flap, the minimum value of the second external force is less than the minimum value of the first external force, and the first rotation direction is opposite to the second rotation direction.

[0010] According to a second aspect of the present application, the present application provides a vehicle, comprising the above-mentioned flap assembly.

[0011] In the flap assembly and vehicle of some embodiments, the second external force for closing the flap can drive the motor shaft to rotate in the second rotation direction, so that when the motor shaft is detected to rotate in the second rotation direction, the motor is started to drive the flap to close, so that the actuator has a follow-up function, thereby reducing the minimum value of the second external force required to close the flap, and improving the experience of closing the flap. In addition, the minimum value of the second external force for closing the flap is less than the minimum value of the first external force for opening the flap, increasing the minimum value of the first external force for opening the flap, reducing the risk of the flap opening by mistake under the action of external force, and thus improving the safety of the flap when closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the driving mechanism of some embodiments of the present application under the action of a first external force;

[0013] Figure 2 for Figure 1 A local enlarged schematic diagram of the middle A;

[0014] Figure 3 for Figure 1 The schematic diagram of the structure of the driving mechanism shown is under the action of the second external force;

[0015] Figure 4 for Figure 3 A partial enlarged schematic diagram of point B in the middle;

[0016] Figure 5 Schematic diagram of the structure of the driving mechanism of some other embodiments of the present application under the action of the first external force;

[0017] Figure 6 for Figure 5 A partial enlarged schematic diagram of point C in the middle;

[0018] Figure 7 for Figure 5 The schematic diagram of the structure of the driving mechanism shown is under the action of the second external force;

[0019] Figure 8 for Figure 7 A partial enlarged schematic diagram of point D in the middle;

[0020] Fig. 9 A schematic diagram of the structure of an actuator of some embodiments of the present application;

[0021] Fig.10 for Fig. 9 A schematic diagram of the clutch mechanism in the actuator shown in the coupled and decoupled states;

[0022] Fig.11 for Fig. 9 An exploded view of a portion of the structure in the actuator shown;

[0023] Fig.12Schematic diagrams of the structures of actuators of other embodiments of the present application;

[0024] Fig.13 A schematic diagram of the structure of an actuator in some other embodiments of the present application at a viewing angle;

[0025] Fig.14 for Fig.13 A schematic diagram of the structure of the actuator shown in another perspective;

[0026] Fig.15 Schematic diagram of the structure of the actuator of some other embodiments of the present application;

[0027] Fig.16 for Fig.15 A schematic diagram of the clutch mechanism in the actuator shown in the coupled and decoupled states;

[0028] Fig.17 for Fig.15 An exploded view of a portion of the structure in the actuator shown;

[0029] Fig.18 Schematic diagrams of the structures of actuators according to some other embodiments of the present application;

[0030] Fig.19 A schematic diagram of the structure of an actuator in some other embodiments of the present application at a viewing angle;

[0031] Fig. 20 for Fig.19 A schematic diagram of the structure of the actuator shown in another perspective;

[0032] Fig.21 It is a schematic diagram of the structure of the cover assembly of some embodiments of the present application;

[0033] Fig. 22 It is a structural schematic diagram of the cover assembly of other embodiments of the present application;

[0034] Fig.23 Schematic diagram of the structure of the cover assembly of some other embodiments of the present application;

[0035] Fig.24 Schematic diagram of the structure of the cover assembly of some other embodiments of the present application;

[0036] Fig.25 A block diagram of a vehicle according to some embodiments of the present application.

[0037] The reference numerals are as follows:

[0038] 100, driving mechanism; 11, motor; 111, motor shaft; 111B, convex end surface; 111C, free end; 112, motor housing; 112A, accommodating cavity; 112B, first opening; 112C, second opening;

[0039] 1131, a first guide structure; 1132, a second guide structure; 1133, a third guide structure;

[0040] 12. Resistance torque applying assembly; 121. First limiting structure; 1211. First annular structure; 1211A. First axial annular end surface; 1212. Second annular structure; 1212B. Second axial annular end surface;

[0041] 122. The second limiting structure;

[0042] 200, actuator; 20, bidirectional transmission mechanism;

[0043] 21. first transmission mechanism; 211. helical teeth; 22. second transmission mechanism;

[0044] 23. The third transmission mechanism; 233. The output gear;

[0045] 231, first transmission assembly; 2311, worm; 2312, first helical gear; 2313, third helical gear; 2314, second spur gear; 2315, second shaft;

[0046] 232, second transmission assembly; 2321, second helical gear; 2322, first spur gear; 2323, third spur gear; 2324, fourth spur gear; 2325, first shaft; 2326, third shaft;

[0047] 30. Clutch mechanism; 301. First clutch part; 302. Second clutch part; 303. Elastic member; 304. Circumferential limiting part; 305. Axial stopper; 307. Elastic ring;

[0048] 40. Rotation detection device; 401. First rotation detection device; 4011. Magnetic ring; 4012. Hall sensor; 4013. Printed circuit board; 402. Second rotation detection device; 4021. Potentiometer;

[0049] 50. External housing;

[0050] 60. Output shaft;

[0051] 701, positioning pin; 702, positioning sleeve;

[0052] 300, cover assembly; 3001, cover; 3002, position switch; 400, vehicle;

[0053] X1, first rotation direction; X2, second rotation direction;

[0054] Z1, first axial direction; Z2, second axial direction. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0056] According to the first aspect of the present application, referring to Figures 1 to 8 As shown, the present application provides a driving mechanism 100. The driving mechanism 100 includes a motor 11 and a resistance torque applying component 12. The motor 11 includes a motor shaft 111. The resistance torque applying component 12 is configured to apply a first resistance torque to the motor shaft 111 when the motor shaft 111 rotates along a first rotation direction X1, and not apply a resistance torque to the motor shaft 111 when the motor shaft 111 rotates along a second rotation direction X2, or; is configured to apply a first resistance torque to the motor shaft 111 when the motor shaft 111 rotates along the first rotation direction X1, and apply a second resistance torque to the motor shaft 111 when the motor shaft 111 rotates along the second rotation direction X2. The first resistance torque is greater than the second resistance torque. The first rotation direction X1 is opposite to the second rotation direction X2.

[0057] By adopting the design of the driving mechanism 100, when the motor 11 is not powered on, the motor shaft 111 rotating in the first rotation direction X1 is conducive to self-locking under the action of the first resistance torque, while the motor shaft 111 rotating in the second rotation direction X2 is not subject to resistance or continues to rotate under the action of a smaller second resistance torque. In other words, the design of the driving mechanism 100 is conducive to the motor shaft 111 being able to self-lock when rotating in the first rotation direction X1 when the motor 11 is not powered on, but not being self-locking when rotating in the second rotation direction X2.

[0058] It should be noted that when the motor 11 is powered on, the driving torque of the motor shaft 111 is much greater than the first resistance torque. Therefore, the first resistance torque or the second resistance torque applied by the resistance torque applying component 12 will not affect the normal rotation of the motor shaft 111 when the motor 11 is powered on.

[0059] The direction of the first resistance torque is opposite to the first rotation direction X1. The first resistance torque may be much smaller than the driving torque generated when the motor 11 is driven, so as to ensure that the motor 11 can work normally when driven.

[0060] In some embodiments, the first resistance torque is greater than or equal to 0.0001 N·m and less than or equal to 10 N·m. In this way, the motor shaft 111 rotating along the first rotation direction X1 is ensured to be self-locked under the action of the first resistance torque, and the motor 11 can work normally when powered on.

[0061] Optionally, the first resistance torque is greater than or equal to 0.0005 N·m and less than or equal to 5 N·m. In this way, the motor shaft 111 rotating along the first rotation direction X1 is ensured to be self-locked under the action of the first resistance torque, so that the motor 11 can work normally when powered on, and the design difficulty of the resistance torque applying component 12 is reduced.

[0062] Optionally, the first resistance torque is greater than or equal to 0.0009 N·m and less than or equal to 1 N·m. Optionally, the first resistance torque is greater than or equal to 0.001 N·m and less than or equal to 0.5 N·m. Optionally, the first resistance torque is greater than or equal to 0.001 N·m and less than or equal to 0.01 N·m.

[0063] It is understandable that the first resistance torque can take any value between 0.0001N·m and 10N·m. For example, the first resistance torque can be 0.0001N·m, 0.0005N·m, 0.0008N·m, 0.001N·m, 0.005N·m, 0.008N·m, 0.01N·m, 0.03N·m, 0.05N·m, 0.08N·m, 0.1N·m, 0.3N·m, 0.5N·m, 0.8N·m, 1N·m, 3N·m, 5N·m, 8N·m or 10N·m. The resistance torque applying component 12 does not apply a resistance torque to the motor shaft 111 or applies a smaller second resistance torque to the motor shaft when the motor shaft 111 rotates along the second rotation direction X2. In this way, it is ensured that the motor shaft 111 rotating along the second rotation direction X2 can rotate easily when no power is supplied.

[0064] When the motor shaft 111 rotates along the second rotation direction X2, the resistance torque applying component 12 may not work, or the resistance torque applied by the resistance torque applying component 12 to the motor shaft 111 is 0 or tends to 0, so that the resistance torque applying component 12 does not apply any resistance torque to the motor shaft 111 when the motor shaft 111 rotates along the second rotation direction X2.

[0065] The direction of the second resistance torque is opposite to the second rotation direction X2. In some embodiments, the second resistance torque is greater than 0 N·m and less than or equal to 5 N·m. In this way, the second resistance torque is small to ensure that the motor shaft 111 rotating along the second rotation direction X2 can rotate easily when power is not supplied, and reduce the design difficulty of the resistance torque applying component 12.

[0066] In some embodiments, the second resistance torque is greater than 0.00001 N·m and less than or equal to 1 N·m. In this way, the second resistance torque is small to ensure that the motor shaft 111 rotating along the second rotation direction X2 can rotate easily when power is off, and reduce the design difficulty of the resistance torque applying component 12.

[0067] Optionally, the second resistance torque is greater than or equal to 0.00005 N·m and less than or equal to 0.5 N·m. Optionally, the second resistance torque is greater than or equal to 0.0001 N·m and less than or equal to 0.1 N·m. Optionally, the second resistance torque is greater than or equal to 0.000001 N·m and less than or equal to 0.01 N·m.

[0068] It can be understood that the second resistance torque can take any value greater than 0N·m and less than or equal to 5N·m. Exemplarily, the second resistance torque can be 0.000001N·m, 0.000005N·m, 0.000008N·m, 0.00001N·m, 0.00005N·m, 0.00008N·m, 0.0001N·m, 0.0005N·m, 0.0008N·m, 0.001N·m, 0.005N·m, 0.0 08N·m, 0.01N·m, 0.05N·m, 0.08N·m, 0.1N·m, 0.5N·m, 0.8N·m, 1N·m, 1.5N·m, 1.8 N·m, 2N·m, 2.5N·m, 2.8N·m, 3N·m, 3.5N·m, 3.8N·m, 4N·m, 4.5N·m, 4.8N·m or 5N·m.

[0069] The first rotation direction X1 and the second rotation direction X2 are two different directions when the motor shaft 111 rotates. When the motor is not powered on, the motor shaft can self-lock when rotating in the first rotation direction X1, but not when rotating in the second rotation direction X2. This is mainly related to the magnitude of the resistance torque when the motor shaft rotates, but has nothing to do with the direction of the resistance torque, and has nothing to do with the choice of the rotation direction.

[0070] like Figure 1 to Figure 2 as well as Figure 5 to Figure 6As shown, in some embodiments, the resistance torque applying assembly 12 includes a first limiting structure 121. The first limiting structure 121 is configured to limit the movement of the motor shaft 111 along the first axial direction Z1 and apply a first resistance torque to the motor shaft 111 when the motor shaft 111 is subjected to an axial force in the first axial direction Z1 and a torque in the first rotational direction X1. In this way, when the motor shaft 111 is subjected to an axial force in the first axial direction Z1, the motor shaft 111 contacts the first limiting structure 121, and the first limiting structure 121 limits the movement of the motor shaft 111 along the first axial direction Z1. When the motor shaft 111 contacts the first limiting structure 121, the motor shaft 111 rotating along the first rotational direction X1 rotates relative to the first limiting structure 121, resulting in friction between the two, thereby generating a first resistance torque. The larger the contact area between the first limiting structure 121 and the motor shaft 111, and the larger the axial force in the first axial direction Z1, the larger the first resistance torque.

[0071] In some embodiments, the first limiting structure 121 includes a first annular structure 1211 and a second annular structure 1212. The first annular structure 1211 is arranged around the motor shaft 111 and connected to the motor shaft 111, that is, the first annular structure 1211 is arranged along the circumference of the motor shaft 111 and connected to the motor shaft 111. The second annular structure 1212 is arranged around the motor shaft 111, and the motor shaft 111 is rotatable in the second annular structure 1212. Under the action of the axial force in the first axial direction Z1, the motor shaft 111 drives the first annular structure 1211 to abut against the second annular structure 1212, and the first annular structure 1211 rotates relative to the second annular structure 1212 as the motor shaft 111 rotates along the first rotation direction X1, generating a first resistance torque. In this way, through the matching design of the first annular structure 1211 and the second annular structure 1212, when the motor shaft 111 is subjected to the axial force in the first axial direction Z1 and the torque in the first rotational direction X1, the first limiting structure 121 can limit the movement of the motor shaft 111 along the first axial direction Z1 and apply a first resistance torque to the motor shaft 111.

[0072] It is understandable that the first limiting structure 121 may also adopt other limiting structure designs.

[0073] like Figure 2 and Figure 6As shown, the first annular structure 1211 has a first axial Z1 annular end face 1211A in the axial direction of the motor shaft 111, and the first axial Z1 annular end face 1211A faces the second annular structure 1212. The second annular structure 1212 has a second axial Z2 annular end face 1212B in the axial direction of the motor shaft 111, and the second axial Z2 annular end face 1212B faces the first annular structure 1211. When the first annular structure 1211 abuts against the second annular structure 1212, the first axial Z1 annular end face 1211A and the second axial Z2 annular end face 1212B abut against each other.

[0074] In some embodiments, the area of ​​the first axial Z1 annular end face 1211A and the area of ​​the second axial Z2 annular end face 1212B may be different. In this way, it is ensured that the two can better abut and generate friction. In a specific embodiment, the area of ​​the first axial Z1 annular end face 1211A may be greater than the area of ​​the second axial Z2 annular end face 1212B. In another specific embodiment, the area of ​​the first axial Z1 annular end face 1211A may be less than the area of ​​the second axial Z2 annular end face 1212B. In yet another specific embodiment, the area of ​​the first axial Z1 annular end face 1211A may be the same as the area of ​​the second axial Z2 annular end face 1212B.

[0075] In some embodiments, at least one of the first axial Z1 annular end surface 1211A and the second axial Z2 annular end surface 1212B is roughened, so as to increase the contact area between the first axial Z1 annular end surface 1211A and the second axial Z2 annular end surface 1212B, thereby increasing the first resistance torque.

[0076] In some embodiments, the first annular structure 1211 may be integral with the motor shaft 111. The material of the first annular structure 1211 may be the same as that of the motor shaft 111, and the first annular structure 1211 and the motor shaft 111 may be manufactured at the same time. The material of the first annular structure 1211 may also be different from that of the motor shaft 111, and the first annular structure 1211 may be formed on the motor shaft 111 by casting or the like.

[0077] In some other embodiments, the first annular structure 1211 may also be detachably sleeved on the motor shaft 111 .

[0078] In some embodiments, the motor 11 further includes a motor housing 112 having a housing 112A, and the first annular structure 1211, the second annular structure 1212, and part of the motor shaft 111 are located in the housing 112A. In this way, the first annular structure 1211 and the second annular structure 1212 are prevented from occupying space outside the motor 11.

[0079] In some embodiments, a mounting groove for the second annular structure 1212 may be provided in the accommodating cavity 112A of the motor housing 112. The second annular structure 1212 may be mounted in the mounting groove.

[0080] In some embodiments, the first annular structure 1211 is disposed adjacent to the second annular structure 1212. Thus, the distance between the second annular structures 1212 is small, and the first annular structure 1211 and the second annular structure 1212 are conveniently abutted.

[0081] In other embodiments, at least one of the first annular structure 1211 and the second annular structure 1212 may also be disposed outside the motor housing 112 to facilitate installation and removal of the first limiting structure 121. Exemplarily, both the first annular structure 1211 and the second annular structure 1212 are disposed outside the motor housing 112.

[0082] In some embodiments, the first annular structure 1211 and the second annular structure 1212 are arranged along the axial direction of the motor housing 112. Thus, when the motor shaft 111 moves along the axial direction of the motor housing 112, the first annular structure 1211 and the second annular structure 1212 are more likely to abut against each other and generate a first resistance torque.

[0083] like Figure 1 , Figure 3 , Figure 5 as well as Figure 7 As shown, along the axial direction of the motor housing 112, the motor housing 112 further includes a first opening 112B and a second opening 112C located at both ends, and the first opening 112B and the second opening 112C are both connected to the accommodating cavity 112A. In the axial direction of the motor housing 112, the second opening 112C is located on the side of the first opening 112B away from the free end 111C of the motor shaft 111. The free end 111C of the motor shaft 111 is axially movable.

[0084] In some embodiments, when the first annular structure 1211 and the second annular structure 1212 are located in the accommodating cavity 112A, the second annular structure 1212 is disposed close to the second opening 112C, and the first annular structure 1211 is located on a side of the second annular structure 1212 away from the second opening 112C.

[0085] In some embodiments, the motor 11 further includes at least one guide structure disposed in the accommodating cavity 112A and located in the axial direction of the motor housing 112, and the motor shaft 111 passes through an opening of at least one guide structure to ensure that the motor shaft 111 moves linearly in the axial direction. In some embodiments, the guide structure includes but is not limited to a bearing. In some embodiments, the bearing includes but is not limited to a lubricating bearing.

[0086] like Figure 1 and Figure 5 As shown, in some embodiments, the motor 11 includes a first guide structure 1131 and a second guide structure 1132. The first guide structure 1131 is disposed adjacent to the first opening 112B, and the second guide structure 1132 is disposed adjacent to the second opening 112C. The motor shaft 111 passes through the opening of the first guide structure 1131 and the opening of the second guide structure 1132 to better ensure that the motor shaft 111 performs linear motion in the axial direction.

[0087] In some embodiments, the second annular structure 1212 may be a guide structure, such as the second guide structure 1132. Thus, the second annular structure 1212 not only plays a limiting role, but also ensures that the motor shaft 111 moves linearly in the axial direction, thereby simplifying the structure of the drive mechanism 100.

[0088] like Figure 1 and Figure 5 As shown, in some embodiments, when the second annular structure 1212 is the second guide structure 1132, in the axial direction of the motor housing 112, the motor shaft 111 passes through the second opening 112C, the opening of the second annular structure 1212, the opening of the first annular structure 1211, the accommodating cavity 112A, the opening of the first guide structure 1131 and the first opening 112B in sequence.

[0089] like Figure 1 , Figure 3 , Figure 5 as well as Figure 7 As shown, in some embodiments, the driving mechanism 100 may further include a third guide structure 1133, which is disposed adjacent to the free end 111C of the motor shaft 111, and the motor shaft 111 passes through an opening of the third guide structure 1133. In this way, the free end 111C of the motor shaft 111 is ensured to perform linear motion in the axial direction more stably. The third guide structure 1133 may be a bearing.

[0090] like Figure 3 to Figure 4 as well as Figure 7 as well as Figure 8As shown, in some embodiments, the resistance torque applying assembly 12 may further include a second limiting structure 122. The second limiting structure 122 is configured to limit the movement of the motor shaft 111 along the second axial direction Z2 and apply a second resistance torque to the motor shaft 111 when the motor shaft 111 is subjected to an axial force in the second axial direction Z2 and a torque in the second rotation direction X2. The first axial direction Z1 is opposite to the second axial direction Z2. In this way, when the motor shaft 111 is subjected to an axial force in the second axial direction Z2, the motor shaft 111 contacts the second limiting structure 122, and the second limiting structure 122 limits the movement of the motor shaft 111 along the second axial direction Z2. When the motor shaft 111 contacts the second limiting structure 122, the motor shaft 111 rotating along the second rotation direction X2 rotates relative to the second limiting structure 122, resulting in friction between the two, thereby generating a second resistance torque. The smaller the contact area between the second limiting structure 122 and the motor shaft 111, and the smaller the axial force in the second axial direction Z2, the smaller the second resistance torque.

[0091] The first axial direction Z1 and the second axial direction Z2 are two opposite directions on the axial direction of the motor shaft 111. In some embodiments, the axial force in the first axial direction Z1 is greater than the axial force in the second axial direction Z2. In this way, the first resistance torque generated by the axial force in the first axial direction Z1 is greater than the second resistance torque generated by the axial force in the second axial direction Z2.

[0092] In some embodiments, the second limiting structure 122 is arranged relative to the free end 111C of the motor shaft 111 in the axial direction of the motor shaft 111. Under the action of the axial force of the second axial direction Z2, the free end 111C of the motor shaft 111 abuts against the second limiting structure 122, and the free end 111C of the motor shaft 111 rotates along the second rotation direction X2 and rotates relative to the second limiting structure 122, forming a second resistance torque. In this way, so that the second limiting structure 122 is located at one end of the motor shaft 111 in the axial direction, the second limiting structure 122 better plays a limiting role. In addition, the free end 111C of the motor shaft 111 and the second limiting structure 122 match each other. When the motor shaft 111 is subjected to the axial force of the second axial direction Z2 and the torque of the second rotation direction X2, the second limiting structure 122 limits the movement of the motor shaft 111 along the second axial direction Z2 and applies a second resistance torque to the motor shaft 111.

[0093] like Figure 1 , Figure 3 , Figure 5 , Figure 7 as well as Figure 8 As shown, in some embodiments, the second limiting structure 122 can be disposed inside the external housing 50, and the external housing 50 is located outside the driving mechanism 100. The external housing 50 can be a gear housing for accommodating transmission structures such as gears, but is not limited thereto. Figure 5 , Figure 7 as well as Figure 8 As shown, in some embodiments, the second limiting structure 122 may be a limiting block.

[0094] like Figure 1 , Figure 3 as well as Figure 4 As shown, in some other embodiments, the second limiting structure 122 may also be integrated with an external structure, and the external structure is located outside the driving mechanism 100. The external structure may be an external housing 50.

[0095] like Figure 4 and Figure 8 As shown, in some embodiments, the free end 111C of the motor shaft 111 has a convex end surface 111B, and the convex end surface 111B protrudes in the direction close to the second limiting structure 122. In this way, the contact area between the convex end surface 111B and the second limiting structure 122 is small, which reduces the friction area when the convex end surface 111B of the motor shaft 111 and the second limiting structure 122 abut, thereby reducing the second resistance torque, ensuring that the motor shaft 111 can easily rotate under the action of the second resistance torque.

[0096] In some embodiments, the convex end surface 111B includes a curved surface, and the curved surface includes but is not limited to at least one of a non-spherical curved surface, a spherical curved surface, and an elliptical curved surface.

[0097] In some embodiments, when the first limiting structure 121 applies a first resistance torque to the motor shaft 111, the first limiting structure 121 has a first friction area. When the second limiting structure 122 applies a second resistance torque to the motor shaft 111, the second limiting structure 122 has a second friction area, and the second friction area is smaller than the first friction area. In this way, the first resistance torque (also the first friction torque) generated by the first friction area is larger, and the second resistance torque (also the second friction torque) generated by the second friction area is smaller.

[0098] In some embodiments, Figure 2 and Figure 6 As shown, the first friction area may be the contact area between the first axial Z1 annular end surface 1211A and the second axial Z2 annular end surface 1212B when the two abut against each other. Figure 4 and Figure 8 As shown, the second friction area may be a contact area between the first limiting structure 121 and the free end 111C of the motor shaft 111 when the two are in abutment with each other.

[0099] like Figure 1 , Figure 3 , Figure 5 as well as Figure 7As shown, in some embodiments, a first transmission mechanism 21 is provided on the motor shaft 111, and the first transmission mechanism 21 is configured to subject the motor shaft 111 to an axial force in an axial direction and a torque in a rotational direction under the action of an external force. The first transmission mechanism 21 can be located outside the motor housing 112, so that the first transmission mechanism 21 transmits the driving force output by the motor shaft 111 and receives the external force. The first transmission mechanism 21 is provided close to the free end 111C of the motor shaft 111.

[0100] In some embodiments, the first transmission mechanism 21 includes a helical tooth 211. When an external force is applied to the helical tooth 211, the helical tooth 211 simultaneously applies an axial force and a torque in a rotational direction to the motor shaft 111. When torques in two different directions are applied to the helical tooth 211, the torque in one direction causes the motor shaft 111 to be subjected to an axial force in a first axial direction Z1 and a torque in a first rotational direction X1, and the torque in the other direction causes the motor shaft 111 to be subjected to an axial force in a second axial direction Z2 and a torque in a second rotational direction X2.

[0101] In some embodiments, a portion of the motor shaft 111 is a worm 2311, and the worm 2311 includes helical teeth 211. In this way, the worm 2311 can transform the received external force into an axial force and torque of the motor shaft 111 along the axial direction.

[0102] Combining the above content, we can see that for the above Figure 1 , Figure 3 , Figure 5 as well as Figure 7 In the driving mechanism shown, the motor shaft is subjected to different resistance torques when rotating in two different rotation directions, thereby achieving self-locking in one direction but not in the other direction.

[0103] It should be noted that for the first resistance torque and the second resistance torque mentioned above, Figure 1 , Figure 3 , Figure 5 as well as Figure 7 The resistance torque applying assembly shown is used as an example to describe the calculation methods of the two. It is understandable that when the resistance torque applying assembly adopts other designs, the calculation formulas of the first resistance torque and the second resistance torque can also adopt other methods.

[0104] Exemplarily, the calculation formula of the resistance torque is shown in the following formula (1):

[0105]

[0106] Where F is the axial thrust on the motor shaft, μ is the contact surface friction coefficient, R is the outer ring radius of the contact surface, and r is the inner ring radius of the contact surface. The contact surface friction coefficient is related to the material.

[0107] For the first resistance moment, F is equal to the axial force in the first axial direction Z1, R is equal to the radius of the outer ring of the annular contact surface formed when the first annular structure and the second annular structure abut against each other, and r is the radius of the inner ring of the annular contact surface formed when the first annular structure and the second annular structure abut against each other;

[0108] For the second resistance torque, F is equal to the axial force in the second axial direction Z2, R is equal to the radius of the contact surface formed when the convex end surface 111B and the second limiting structure 122 abut against each other, and r is 0.

[0109] According to the second aspect of the present application, referring to Figures 9 to 20 As shown, the present application provides an actuator 200. The actuator 200 includes a driving mechanism 100 of any of the above embodiments. In this way, the design of the driving mechanism 100 is conducive to the motor shaft 111 of the actuator 200 being self-locking when rotating in the first rotation direction X1 when the motor 11 is not powered, but not self-locking when rotating in the second rotation direction X2.

[0110] In some embodiments, the actuator 200 further includes an output shaft 60 and a bidirectional transmission mechanism 20. The output shaft 60 can not only receive the driving force output by the motor 11, but also receive external force. The bidirectional transmission mechanism 20 is connected to the motor shaft 111 and the output shaft 60, and is configured to transmit power bidirectionally between the output shaft 60 and the motor shaft 111, that is, the bidirectional transmission mechanism 20 can transmit the driving force output by the motor shaft 111 to the output shaft 60 to drive the external driven device, and can also transmit the external force received by the output shaft 60 to the motor shaft 111 to drive the motor shaft 111 to rotate.

[0111] In some embodiments, Fig. 9 , Fig.12 , Fig.15 as well as Fig.18 As shown, the bidirectional transmission mechanism 20 includes a first transmission mechanism 21, a second transmission mechanism 22 and a third transmission mechanism 23. The first transmission mechanism 21 is arranged on the motor shaft 111. The second transmission mechanism 22 is arranged on the output shaft 60. The third transmission mechanism 23 is transmission-connected with the first transmission mechanism 21 and the second transmission mechanism 22. In this way, the power is bidirectionally transmitted between the output shaft 60 and the motor shaft 111 through the first transmission mechanism 21, the second transmission mechanism 22 and the third transmission mechanism 23.

[0112] like Fig. 9 , Fig.12 , Fig.15 as well as Fig.18As shown, in some embodiments, the third transmission mechanism 23 includes a first transmission assembly 231 and a second transmission assembly 232. The first transmission assembly 231 is disposed adjacent to the first transmission mechanism 21 and is in transmission connection. The second transmission assembly 232 is disposed adjacent to the second transmission mechanism 22 and is connected to the first transmission assembly 231 and the second transmission mechanism 22. In this way, at least two transmission assemblies are used to better realize the bidirectional transmission of power between the output shaft 60 and the motor shaft 111, while simplifying the structure of the third transmission mechanism 23.

[0113] In some embodiments, the third transmission mechanism 23 may further include a third transmission combination that is transmission-connected to both the first transmission combination 231 and the second transmission combination 232 .

[0114] It is understandable that the third transmission mechanism 23 may also include one transmission combination or more than two transmission combinations.

[0115] In some embodiments, Fig.15 and Fig.18 As shown, in the case where the first transmission mechanism 21 includes a helical tooth 211 disposed on the motor shaft 111, the first transmission assembly 231 includes a worm 2311 and a first bevel gear 2312. The first bevel gear 2312 is coaxially connected to the worm 2311 and meshes with the helical tooth 211. The worm 2311 is transmission-connected to the second transmission assembly 232. In this way, transmission is achieved through the first bevel gear 2312 and the helical tooth 211 on the motor shaft 111, and transmission with the second transmission assembly 232 is achieved through the worm 2311.

[0116] It should be noted that the axial forces in the first axial direction Z1 and the second axial direction Z2 mentioned above can be generated by the first bevel gear 2312 applying force to the helical teeth 211 on the motor shaft 111 .

[0117] In some embodiments, the worm 2311 may be a duplex worm 2311 , and the first bevel gear 2312 may be a duplex gear.

[0118] In some embodiments, Fig.15 and Fig.18 As shown, the second transmission assembly 232 includes a second bevel gear 2321 and a first spur gear 2322. The second bevel gear 2321 is meshed with the worm 2311. The first spur gear 2322 is coaxially arranged with the second bevel gear 2321 and meshed with the second transmission mechanism 22. In this way, the second bevel gear 2321 is transmitted with the worm 2311 of the first transmission assembly 231, and the first spur gear 2322 is transmitted with the second transmission mechanism 22.

[0119] In some embodiments, Fig.15 and Fig.18As shown, the second transmission assembly 232 further includes a first shaft 2325, and the second bevel gear 2321 and the first spur gear 2322 are connected to the first shaft, so as to realize the coaxial connection between the second bevel gear 2321 and the first spur gear 2322.

[0120] It should be noted that Fig.15 and Fig.18 The two-stage worm gear 2311 plus the one-stage parallel shaft gear assembly in the bidirectional transmission mechanism 20 shown are not self-locking and can be driven in both directions.

[0121] In some embodiments, Fig.15 and Fig.18 As shown, the extension direction of the worm 2311 intersects with the extension direction of the motor shaft 111, and the extension direction of the first shaft 2325 intersects with the extension direction of the worm 2311 and is parallel to the extension directions of the motor shaft 111 and the output shaft 60. Fig.15 and Fig.18 The overall structure shown is arranged in an L shape.

[0122] In some embodiments, Fig.19 and Fig. 20 As shown, Fig.15 and Fig.18 When the overall structure shown is arranged in the housing of the actuator 200, the actuator 200 is L-shaped, which is more conducive to platform application, and the connector does not occupy additional space in some directions of the vehicle.

[0123] In some embodiments, Fig. 9 and Fig.12 As shown, when the first transmission mechanism 21 includes a helical tooth 211 disposed on the motor shaft 111, the first transmission assembly 231 includes a third bevel gear 2313 and a second spur gear 2314. The third bevel gear 2313 is meshed with the helical tooth 211. The second spur gear 2314 is coaxially arranged with the third bevel gear 2313 and is in transmission connection with the second transmission assembly 232. Transmission is achieved through the third bevel gear 2313 and the helical tooth 211 on the motor shaft 111, and transmission with the second transmission assembly 232 is achieved through the second spur gear 2314.

[0124] In some embodiments, the first transmission assembly 231 further includes a second shaft 2315, and the third bevel gear 2313 and the second spur gear 2314 are connected to the second shaft 2315. In this way, the coaxial connection between the third bevel gear 2313 and the second spur gear 2314 is achieved.

[0125] In some embodiments, Fig. 9 and Fig.12As shown, the second transmission assembly 232 includes a third spur gear 2323 and a fourth spur gear 2324. The third spur gear 2323 is meshed with the second spur gear 2314. The fourth spur gear 2324 is coaxially arranged with the third spur gear 2323 and meshed with the second transmission mechanism 22. In this way, transmission is achieved through the third spur gear 2323 and the first transmission assembly 231, and transmission is achieved through the fourth spur gear 2324 and the second transmission mechanism 22.

[0126] In some embodiments, the second transmission assembly 232 further includes a third shaft 2326, and the third spur gear 2323 and the fourth spur gear 2324 are connected to the third shaft 2326. In this way, the coaxial connection of the third spur gear 2323 and the fourth spur gear 2324 is achieved.

[0127] It should be noted that Fig. 9 and Fig.12 The first-stage worm gear 2311 plus the two-stage parallel shaft gear assembly in the bidirectional transmission mechanism 20 shown are not self-locking and can be driven in both directions.

[0128] It should be noted that the axial forces in the first axial direction Z1 and the second axial direction Z2 mentioned above can be generated by the third bevel gear 2313 applying force to the helical teeth 211 on the motor shaft 111 .

[0129] In some embodiments, Fig. 9 and Fig.12 As shown, the extension direction of the second shaft 2315 intersects with the extension direction of the motor shaft 111, and the extension direction of the second shaft 2315 is the same as the extension direction of the third shaft 2326 and the output shaft 60. Fig. 9 and Fig.12 The structure shown is arranged in a planar manner as a whole.

[0130] In some embodiments, Fig.13 and Fig.14 As shown, Fig. 9 and Fig.12 When the overall structure shown is arranged in the housing of the actuator 200, the actuator 200 is planar, which is more conducive to platform application, and the connector does not occupy additional space of the vehicle in some directions.

[0131] In some embodiments, Figures 9 to 12 as well as Figures 15 to 18 As shown, the second transmission mechanism 22 includes an output gear 233, and the output gear 233 is rotatably sleeved on the output shaft 60. The output gear 233 is a spur gear.

[0132] It should be noted that the design of the bidirectional transmission mechanism 20 is not limited to Fig. 9 , Fig.12 , Fig.15 as well as Fig.18The structural design shown may also adopt other bidirectional transmission mechanisms 20 that can transmit power in both directions.

[0133] like Fig.10 and Fig.16 As shown, in some embodiments, the actuator 200 further includes a clutch mechanism 30. The clutch mechanism 30 includes a first clutch portion 301 and a second clutch portion 302. The first clutch portion 301 is sleeved on the output shaft 60, and the second clutch portion 302 is movably sleeved on the output shaft 60 and fixedly connected to the second transmission mechanism 22. When the first clutch portion 301 and the second clutch portion 302 are coupled, the torque is transmitted between the second transmission mechanism 22 and the output shaft 60. When the first clutch portion 301 and the second clutch portion 302 are decoupled, the transmission of the torque between the second transmission mechanism 22 and the output shaft 60 is interrupted.

[0134] In some embodiments, Fig.10 and Fig.16 As shown, the first clutch portion 301 includes a plurality of first convex portions and a plurality of first concave portions alternately arranged along its circumference. The second clutch portion 302 includes a plurality of second convex portions and a plurality of second concave portions alternately arranged along its circumference. Fig.10 (B) and Fig.16 As shown in (B) in FIG. 1 , when the first clutch portion 301 is coupled with the second clutch portion 302, the first convex portion is located in the second concave portion, and the second convex portion is located in the first concave portion. Fig.10 (A) and Fig.16 As shown in (A) in FIG. 1 , when the first clutch portion 301 and the second clutch portion 302 are decoupled, the plurality of first protrusions and the plurality of second protrusions abut against each other.

[0135] No matter whether the clutch mechanism 30 is in the decoupled state or the coupled state, the second transmission mechanism 22 is meshed with the spur gear in the second transmission assembly 232 .

[0136] like Fig.11 and Fig.17As shown, in the case where the second transmission mechanism 22 includes an output gear 233, the output gear 233 is rotatably sleeved on the output shaft 60, and the second clutch part 302 is fixedly connected to the output gear 233. The clutch mechanism 30 also includes a circumferential limiter 304 and an elastic member 303. The circumferential limiter 304 is arranged along the circumference of the output shaft 60. The elastic member 303 is sleeved on the output shaft 60 and is arranged between the circumferential limiter 304 and the output gear 233, and elastically pushes the output gear 233 to provide a pre-tightening force to the second clutch part 302 toward the first clutch part 301. In this way, the elastic pre-tightening force is applied to the output gear 233 by the elastic member 303 to ensure that the second clutch part 302 is coupled with the first clutch part 301. Furthermore, when the torque applied to the output gear 233 is large enough to overcome the elastic pre-tightening force applied by the elastic member 303 to the output gear 233 , the second clutch portion 302 and the first clutch portion 301 can be decoupled.

[0137] In some embodiments, the elastic member 303 includes but is not limited to a spring, and the spring is movably mounted on the output shaft 60 .

[0138] In some embodiments, Fig.11 As shown, the actuator 200 may further include an elastic ring 307 movably sleeved on the output shaft 60, and the elastic ring 307 is located between the circumferential limit portion 304 and the end of the output shaft 60. In some embodiments, the elastic ring 307 may be an O-ring.

[0139] like Fig.11 and Fig.17 As shown, the actuator 200 may further include an axial stopper 305 sleeved on the output shaft 60. The axial stopper 305 is located on the side of the first clutch portion 301 away from the second clutch portion 302. In this way, the axial stopper 305 serves to prevent the first clutch portion 301 from moving in the axial direction. Fig.11 As shown, the axial stopper 305 may be an annular elastic retaining ring. Fig.17 As shown, the axial stop 305 can be an open retaining ring.

[0140] like Fig. 9 , Fig.12 , Fig.15 as well as Fig.18 As shown, in some embodiments, the driving mechanism 100 further includes a first rotation detection device 401, which is fixed to the motor 11 and configured to detect a rotation parameter of the motor shaft 111 when the motor shaft 111 rotates. The rotation parameter may be at least one of the rotation direction, rotation speed, and rotation stroke of the motor shaft 111. In this way, by detecting the rotation parameter of the motor shaft 111, the state of the motor shaft 111 is monitored, so as to facilitate the control of the motor shaft 111.

[0141] In some embodiments, the first rotation detection device 401 includes a magnetic ring 4011 and at least one Hall sensor 4012. The magnetic ring 4011 is connected to the motor shaft 111 and is configured to rotate with the motor shaft 111 when the motor shaft 111 rotates. The at least one Hall sensor 4012 is disposed on the motor 11 and is configured to sense changes in the magnetic field of the magnetic ring 4011 when the motor shaft 111 rotates.

[0142] In some embodiments, the first rotation detection device 401 may further include a printed circuit board 4013 (Printed Circuit Board) or other circuit boards, and the circuit board is fixed on the motor housing 112. At least one Hall sensor 4012 is fixed on the circuit board.

[0143] In some embodiments, one Hall sensor 4012 is fixed to the circuit board, and can detect the rotation speed of the motor shaft 111 when it rotates. In other embodiments, two Hall sensors 4012 are arranged on the circuit board at intervals, and can detect the rotation direction of the motor shaft 111 when it rotates. In addition, when one or two Hall sensors 4012 are fixed to the circuit board, the motor 11 can have a single-channel Hall or dual-channel Hall output function, so that the external driven device driven by the motor 11 can realize the on / off function of reversing, retreating or hovering when encountering obstacles.

[0144] In other embodiments, Fig.12 and Fig.18 As shown, the actuator 200 further includes a second rotation detection device 402, which is connected to the output shaft 60 and is configured to detect a rotation parameter of the output shaft 60 when the output shaft 60 rotates. In this way, the rotation condition of the output shaft 60 is monitored by the second rotation detection device 402.

[0145] In other embodiments, the second rotation detection device 402 may include a potentiometer 4021, which is connected to the output shaft 60 to detect the rotation angle of the output shaft 60. In addition, the actuator 200 has a signal output function of the potentiometer 4021, which can realize the reverse retreat or hovering function of the driven external device driven by the motor 11 when encountering an obstacle on / off.

[0146] According to the third aspect of the present application, referring to Figure 21 to Figure 24 As shown, the present application provides a mouth cover assembly 300. The mouth cover assembly 300 includes a mouth cover 3001 and an actuator 200 of any of the above embodiments. The actuator 200 is connected to the mouth cover 3001.

[0147] Based on the design of the actuator 200, when a first external force is applied to the flap 3001 in the closed position to open the flap, the first external force drives the motor shaft 111 to rotate along the first rotation direction X1 through the bidirectional transmission mechanism 20. When a second external force is applied to the flap in the open position to close the flap, the second external force drives the motor shaft 111 to rotate along the second rotation direction X2 through the bidirectional transmission mechanism 20, and the minimum value of the second external force is less than the minimum value of the first external force. In this way, the second external force to close the flap can drive the motor shaft 111 to rotate along the second rotation direction X2, so that when the motor shaft 111 is detected to rotate along the second rotation direction X2, the motor 11 is started to drive the flap 3001 to close, so that the actuator 200 has a follow-up function, thereby reducing the second external force required to close the flap and improving the experience of closing the flap 3001. In addition, the minimum value of the second external force to close the flap is less than the minimum value of the first external force to open the flap. While reducing the second external force to close the flap, the minimum value of the first external force is increased, reducing the risk of the flap opening by mistake under the action of external force, thereby improving the safety of the flap when it is closed.

[0148] It should be noted that, in the present application, opening the flap includes fully opening the flap and partially opening the flap. When the flap is fully opened, the flap rotates from the closed position to the fully opened position; when the flap is partially opened, the flap rotates from the closed position to a position between the fully opened position and the closed position.

[0149] In some embodiments, the ratio of the minimum value of the first external force to the minimum value of the second external force is greater than or equal to 1.5 and less than or equal to 20. In this way, the ratio of the minimum value of the first external force to the minimum value of the second external force is larger, ensuring that the minimum value of the first external force is larger and the minimum value of the second external force is smaller, thereby better improving the safety when the flap is closed, reducing the second external force required to close the flap, and thus improving the experience of closing the flap 3001.

[0150] Optionally, the ratio of the minimum value of the first external force to the minimum value of the second external force is 2-15, 5-10 or 1-15.

[0151] It is understandable that the ratio of the minimum value of the first external force to the minimum value of the second external force can be any value between 1.5 and 20. Exemplarily, the ratio of the minimum value of the first external force to the minimum value of the second external force can be 1.5, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 or 20.

[0152] In some embodiments, the minimum value of the first external force is greater than or equal to 5 N and less than or equal to 50 N. This arrangement ensures that the minimum value of the first external force is appropriate, reduces the risk of the flap opening by mistake under the action of the external force, thereby improving the safety of the flap when it is closed, and also ensures that the flap can be opened manually.

[0153] Optionally, the minimum value of the first external force is greater than or equal to 8 N and less than or equal to 40 N. Optionally, the minimum value of the first external force is greater than or equal to 10 N and less than or equal to 35 N. Optionally, the minimum value of the first external force is greater than or equal to 15 N and less than or equal to 30 N.

[0154] It is understandable that the minimum value of the first external force can be any value between 5N and 50N. For example, the minimum value of the first external force can be 5N, 8N, 10N, 15N, 18N, 20N, 25N, 28N, 30N, 35N, 38N, 40N, 45N, 48N or 50N.

[0155] In some embodiments, the minimum value of the second external force is greater than or equal to 0.5 N and less than or equal to 20 N. In this way, the minimum value of the second external force required to close the cover is reduced, thereby improving the experience of closing the cover 3001.

[0156] Optionally, the minimum value of the second external force is greater than or equal to 1 N and less than or equal to 18 N. Optionally, the minimum value of the second external force is greater than or equal to 3 N and less than or equal to 15 N.

[0157] It is understandable that the minimum value of the second external force can be any value between 0.5 N and 20 N. For example, the minimum value of the second external force can be 0.5 N, 1 N, 2 N, 3 N, 4 N, 5 N, 6 N, 7 N, 8 N, 9 N, 10 N, 11 N, 12 N, 13 N, 14 N, 15 N, 16 N, 17 N, 18 N, 19 N or 20 N.

[0158] It should be noted that the minimum value of the first external force and the minimum value of the second external force can be detected by a force gauge.

[0159] The force gauge detects the minimum value of the first external force in the following manner: when the flap is in the fully closed position, the force gauge detects the minimum value of the first external force required to open the flap at the test position. The test position is any position within the region of 0 mm to 50 mm from the edge of the flap. During the test, the angle between the direction of the force applied by the force gauge to the flap and the plane of the flap is 70° to 110°. The flap can be opened fully or partially. The flap can be opened horizontally or vertically.

[0160] The force gauge detects the minimum value of the second external force in the following manner: when the flap is in a fully open position or a partially open position, the force gauge detects the minimum value of the second external force required to close the flap at the test position. The test position is any position within the range of 0 mm to 50 mm from the edge of the flap. During the test, the angle between the direction of the force applied by the force gauge to the flap and the plane of the flap is 70° to 110°. The flap can be closed horizontally or vertically.

[0161] In some embodiments, the flap assembly 300 further includes a control device (not shown in the figure), which is configured to control the motor 11 to be powered on when a second external force is applied to the flap in the open position to close the flap, and when the motor shaft 111 is detected to rotate in the second rotation direction X2, and / or when the output shaft 60 is detected to rotate at an angle exceeding a preset angle under the second external force, the motor shaft 111 of the powered motor 11 drives the flap to be closed through the bidirectional transmission mechanism 20 and the output shaft 60. In this way, the second external force to close the flap is monitored by detecting the rotation of the motor shaft 111 and / or the output shaft 60 under the action of the second external force. When the second external force to close the flap is detected, the motor 11 is triggered to be powered on and drive the flap 3001 to close, reducing the magnitude of the second external force to achieve the follow-up function of the actuator 200, thereby ensuring a better feel when the flap is closed.

[0162] It should be noted that the design of the first limiting structure 121 and the second limiting structure 122 can utilize the non-self-locking function to detect the second external force for closing the cover because the motor shaft 111 does not self-lock when rotating along the second rotation direction X2.

[0163] In some embodiments, the mouth cover assembly further includes a rotation detection device 40 , which is connected to the control device and is configured to detect a rotation parameter of at least one of the motor shaft 111 and the output shaft 60 .

[0164] In some embodiments, the rotation detection device 40 may include at least one of the first rotation detection device 401 and the second rotation detection device 402 described above.

[0165] In some embodiments, when a first external force is applied to the cover 3001 in the closed position to open the cover 3001, the first clutch part 301 and the second clutch part 302, which are coupled to each other, are decoupled under the action of the first external force. Under the first external force, the motor shaft 111 rotates along the first rotation direction X1, and the motor shaft 111 rotating along the first rotation direction X1 is self-locked under the action of the first limiting structure 121. After the motor shaft 111 is self-locked, the bidirectional transmission mechanism 20, the output shaft 60, and the second clutch part 302 on the output shaft 60 cannot rotate either. When the second external force is greater than the elastic preload force applied to the second clutch part 302 by the elastic member 303, the first clutch part 301 and the second clutch part 302 are decoupled, and the cover 3001 is forcibly opened under the second external force.

[0166] In some embodiments, when a second external force is applied to the flap in the open position to close the flap, or when the motor 11 is powered on and drives the flap to open or close through the bidirectional transmission mechanism 20 and the output shaft 60, the first clutch portion 301 and the second clutch portion 302 are coupled to each other. In this way, the clutch mechanism 30 is coupled to transmit torque when the flap is opened or closed electrically or manually.

[0167] In some embodiments, the coupling torque of the clutch mechanism 30 is greater than the stall torque of the actuator 200. Thus, when the cover is electrically opened or closed, the clutch mechanism 30 is coupled and transmits torque, and can transmit the stall torque of the actuator 200 without decoupling.

[0168] In some embodiments, Fig.21 and Fig.23 As shown, the flap assembly may further include a position switch 3002 .

[0169] In some embodiments, a position switch 3002 and a Hall sensor 4012 on the motor 11 can be used to identify the opening and closing modes of the motor 11. When the cover is in an open state and is electrically closed, the Hall value of the actuator 200 (also the Hall sensor 4012 on the motor 11) returns to 0, and the position switch is in a closed state. When the cover is in a closed state and is electrically opened, the actuator 200 outputs a certain Hall value, and the position switch is in an open state. When the cover is in an open state and is manually closed under a second external force, the Hall value of the actuator 200 outputs a certain Hall value, and the position switch is in a closed state. When the cover is in a closed state and is manually closed, the Hall value of the actuator 200 does not change, and the position switch is in an open state.

[0170] In other embodiments, the opening and closing modes of the motor 11 can be identified in cooperation with the two position switches and the Hall sensor 4012 on the motor 11. When the cover is in an open state and is electrically closed, the Hall value of the actuator 200 returns to 0, the first position switch is in a closed state, and the second position switch is in an open state. When the cover is in a closed state and is electrically opened, the actuator 200 outputs a certain Hall value, the first position switch is in an open state, and the second position switch is in a closed state. When the cover is in an open state and is manually closed under a second external force, the Hall value of the actuator 200 outputs a certain Hall value, the first position switch is in a closed state, and the second position switch is in an open state. When the cover is in a closed state and is manually opened under a first external force, the Hall value of the actuator 200 does not change, the first position switch is in an open state, and the second position switch is in an open state.

[0171] In some embodiments, the actuator 200 has a concentric structure, which includes a positioning pin and a positioning sleeve. When the positioning pin and the positioning sleeve are assembled with the cover body, they can be ensured to be concentric with the output shaft 60 and the cover shaft connected to the cover during assembly, thereby improving stability during transmission.

[0172] The following Fig. 9 and Fig.15 The process in which the actuator 200 closes the cover under the action of the first external force and opens the cover under the action of the second external force is described in detail.

[0173] When the flap is in the closed position, when the first external force is used to manually force the flap open, the flap rotating shaft connected to the flap drives the non-self-locking bidirectional transmission mechanism 20 to the motor shaft 111, and the first external force can cause the motor shaft 111 to be subjected to the axial force of the first axial direction Z1 and the torque of the first rotation direction X1. Under the action of the axial force of the first axial direction Z1, the first annular structure 1211 contacts the second annular structure 1212, and the friction torque generated increases with the increase of the axial force, thereby realizing the self-locking of the motor shaft 111. Continue to increase the magnitude of the first external force, so that the first clutch part 301 of the clutch mechanism 30 is dynamically decoupled from the second clutch part 302, and the clutch mechanism 30 is decoupled, that is, the forced opening function of the flap is realized. Continuously bending at a certain angle (for example, 90°) will cause the clutch mechanism 30 to enter the next coupling position and re-dynamically couple. The first external force is relatively large, and also realizes a certain anti-playing effect.

[0174] When the flap is in the open position, when the second external force is used to manually close the flap forcibly, the flap rotation shaft drives the non-self-locking bidirectional transmission mechanism 20 to the motor shaft 111. The second external force can make the motor shaft 111 subject to the axial force of the second axial direction Z2 and the torque of the second rotation direction X2. Under the action of the axial force of the second axial direction Z2, the free end 111C of the motor shaft 111 contacts the second limiting structure 122, and the contact area is small, and the friction torque generated is small, so that the motor shaft 111 can rotate easily under the action of the torque, and the magnetic ring 4011 on the motor shaft 111 rotates together. When the Hall sensor 4012 on the circuit board detects the rotation of the motor shaft 111, the signal sensed by the Hall sensor 4012 is transmitted to the control device, and the control device drives the entire actuator 200 to complete the closing of the flap, that is, to realize the follow-up function. The second external force is relatively small, and the customer experience is good.

[0175] Fig.12 and Fig.18 The working mode of the actuator 200 to realize the forced opening function of the cover is similar to Fig. 9 and Fig.15 The working method of the actuator 200 shown is the same and will not be described again here. Fig.12 and Fig.18 The actuator 200 shown in the figure realizes the follow-up function of the cover in the same way as Fig. 9 and Fig.15 The follow-up function of the actuator 200 shown is also basically similar, and the similarities are not repeated here. The difference is that when the output shaft 60 rotates under the second external force, the potentiometer 4021 on the output shaft 60 detects that the output shaft 60 rotates an angle, and transmits the signal sensed by the potentiometer 4021 to the control device. The control device controls the actuator 200 to electrically drive the closing cover to realize the follow-up function.

[0176] like Fig.25 As shown, according to the fourth aspect of the present application, the present application also provides a vehicle 400 , and the vehicle 400 includes the above-mentioned cover assembly 300 .

[0177] Some embodiments of the present application have at least the following beneficial effects:

[0178] (1) The bidirectional transmission mechanism of the actuator can transmit in both directions without self-locking. However, under the action of the first limit structure and the second limit structure, the entire transmission system can achieve self-locking in one direction and non-self-locking in the other direction when reversely driven by external force. The self-locking direction realizes the forced opening function of the cover, and the non-self-locking direction realizes the follow-up function of the cover.

[0179] (2) When the actuator is forced to close under the second external force, since the internal transmission system is not self-locking, only a small second external force is required to easily turn the cover to realize the follow-up function, thereby ensuring that the cover feels better when closed.

[0180] (3) When the actuator is forced to open under the first external force, due to the self-locking of the internal transmission system, a large force needs to be applied to decouple the clutch mechanism to achieve the forced opening function, thereby ensuring the safety of the cover when it is closed.

[0181] (4) The actuator can sense the user's manual closing of the flap and quickly execute the electric closing of the flap, giving the user a more intelligent experience in the electric closing scenario.

[0182] (5) The bidirectional transmission component design of the actuator makes the actuator more suitable for platform applications.

[0183] (6) The actuator uses a Hall sensor and / or a potentiometer. In the follow-up function, the Hall sensor detects the rotation signal of the motor shaft and / or the potentiometer detects the rotation angle of the output shaft and transmits it to the control device.

[0184] The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technical personnel in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A cover assembly, characterized in that: include: Mouth cover; as well as An actuator is connected to the cover and comprises: a motor, including a motor shaft; and a bidirectional transmission mechanism connected to the motor shaft and the mouth cover and configured to transmit power bidirectionally between the motor shaft and the mouth cover; Wherein, when a first external force for opening the flap is applied to the flap in the closed position, the first external force can drive the motor shaft to rotate along a first rotation direction through the bidirectional transmission mechanism to open the flap; when a second external force for closing the flap is applied to the flap in the open position, the second external force can drive the motor shaft to rotate along a second rotation direction through the bidirectional transmission mechanism to close the flap, the minimum value of the second external force is less than the minimum value of the first external force, and the first rotation direction is opposite to the second rotation direction.

2. The cover assembly according to claim 1, characterized in that: The motor further includes a resistance torque applying assembly configured to apply a first resistance torque to the motor shaft when the motor shaft rotates along the first rotation direction.

3. The cover assembly according to claim 2, characterized in that: The resistance torque applying assembly is further configured to apply no resistance torque or a second resistance torque to the motor shaft when the motor shaft rotates along the second rotation direction, wherein the first resistance torque is greater than the second resistance torque.

4. The cover assembly according to claim 3, characterized in that: The resistance torque applying assembly comprises: The first limiting structure is configured to limit the movement of the motor shaft along the first axial direction and apply the first resistance torque to the motor shaft when the motor shaft is subjected to an axial force in a first axial direction and a torque in the first rotational direction under the action of the first external force.

5. The cover assembly according to claim 4, characterized in that: The resistance torque applying assembly comprises: The second limiting structure is configured to limit the movement of the motor shaft along the second axial direction and apply the second resistance torque to the motor shaft when the motor shaft is subjected to an axial force in a second axial direction and a torque in the second rotational direction under the action of the second external force, and the first axial direction is opposite to the second axial direction.

6. The cover assembly according to claim 5, characterized in that: When the first limiting structure applies the first resistance torque to the motor shaft, the first limiting structure has a first friction area; When the second limiting structure applies the second resistance torque to the motor shaft, the second limiting structure has a second friction area, and the second friction area is smaller than the first friction area.

7. The cover assembly according to claim 4, characterized in that: The first limiting structure includes a first annular structure and a second annular structure, the first annular structure is arranged around the motor shaft and connected to the motor shaft, and the second annular structure is arranged around the motor shaft; under the action of the axial force of the first axial direction, the motor shaft drives the first annular structure to abut against the second annular structure, and the first annular structure rotates relative to the second annular structure as the motor shaft rotates along the first rotation direction, generating the first resistance torque.

8. The cover assembly according to claim 7, characterized in that: The motor further includes a motor housing having an accommodating cavity, and the first annular structure and the second annular structure are located in the accommodating cavity.

9. The cover assembly according to claim 7, characterized in that: The first annular structure is disposed adjacent to the second annular structure.

10. The cover assembly according to claim 7, characterized in that: The second annular structure is a guiding structure.

11. The cover assembly according to claim 5, characterized in that: The second limiting structure is arranged opposite to the free end of the motor shaft in the axial direction of the motor shaft; Under the action of the axial force in the second axial direction, the free end of the motor shaft abuts against the second limiting structure, and when the free end of the motor shaft rotates along the second rotation direction and rotates relative to the second limiting structure, the second resistance torque is generated.

12. The cover assembly according to claim 11, characterized in that: The free end of the motor shaft has a convex end surface, and the convex end surface protrudes in a direction close to the second limiting structure.

13. The cover assembly according to claim 3, characterized in that: The second resistance torque is greater than 0 N·m and less than or equal to 5 N·m.

14. The cover assembly according to claim 2, characterized in that: The first resistance torque is greater than or equal to 0.0001 N·m and less than or equal to 10 N·m.

15. The cover assembly according to claim 1, characterized in that: The actuator further includes an output shaft, which is connected to the mouth cover and the bidirectional transmission mechanism. The mouth cover assembly further includes: The control device is configured to control the motor to be energized when a second external force is applied to the mouth cover in the open position to close the mouth cover, and when it is detected that the motor shaft rotates in the second rotation direction, and / or when it is detected that the output shaft rotates by the second external force exceeding a preset angle, so that the motor shaft of the energized motor drives the mouth cover to be closed through the bidirectional transmission mechanism and the output shaft.

16. The cover assembly according to claim 15, characterized in that: The cover assembly also includes: The rotation detection device is connected to the control device and is configured to detect a rotation parameter of at least one of the motor shaft and the output shaft.

17. The cover assembly according to claim 16, characterized in that: The rotation detection device includes a first rotation detection device, which is connected to the motor shaft and is configured to detect a rotation parameter of the motor shaft.

18. The cover assembly according to claim 16, characterized in that: The rotation detection device includes a second rotation detection device, which is connected to the output shaft and is configured to detect a rotation parameter of the output shaft.

19. The cover assembly according to claim 1, characterized in that: The actuator further includes an output shaft, the output shaft is connected to the cover and the bidirectional transmission mechanism, the bidirectional transmission mechanism includes a second transmission mechanism rotatably sleeved on the output shaft; the actuator further includes: A clutch mechanism, comprising a first clutch part and a second clutch part, wherein the first clutch part is sleeved on the output shaft, and the second clutch part is movably sleeved on the output shaft and connected to the second transmission mechanism; When a first external force for opening the cover is applied to the cover in the closed position, the first clutch part and the second clutch part coupled to each other are decoupled under the action of the first external force.

20. The cover assembly according to claim 19, characterized in that: When a second external force for closing the flap is applied to the flap in the open position, or when the motor is energized and drives the flap to open or close through the bidirectional transmission mechanism and the output shaft, the first clutch part and the second clutch part are coupled to each other.

21. The cover assembly according to claim 19, characterized in that: The clutch mechanism also includes: a circumferential limiting portion, arranged along the circumference of the output shaft; and The elastic member is sleeved on the output shaft and is disposed between the circumferential limit portion and the second transmission mechanism, and elastically pushes the second transmission mechanism to provide a pre-tightening force for the second clutch portion toward the first clutch portion.

22. The cover assembly according to claim 1, characterized in that: The actuator further comprises an output shaft, wherein the output shaft is connected to the cover and the bidirectional transmission mechanism, and the bidirectional transmission mechanism comprises: A first transmission mechanism is arranged on the motor shaft; A second transmission mechanism is disposed on the output shaft; and The third transmission mechanism is transmission-connected to the first transmission mechanism and the second transmission mechanism.

23. The cover assembly according to claim 22, characterized in that: The first transmission mechanism includes helical teeth arranged on the motor shaft.

24. The cover assembly according to claim 22, characterized in that: The third transmission mechanism comprises: A first transmission assembly, disposed adjacent to and in transmission connection with the first transmission mechanism; and The second transmission assembly is arranged adjacent to the second transmission mechanism and is transmission-connected to the first transmission assembly and the second transmission mechanism.

25. The cover assembly according to claim 24, characterized in that: The first transmission mechanism includes helical teeth arranged on the motor shaft; the first transmission assembly includes: a worm gear, drivingly connected to the second transmission assembly; and The first helical gear is coaxially connected to the worm and meshes with the helical teeth.

26. The cover assembly according to claim 25, characterized in that: The second transmission combination comprises: a second helical gear meshing with the worm; and The first spur gear is coaxially arranged with the second helical gear and meshes with the second transmission mechanism.

27. The cover assembly according to claim 26, characterized in that: The second transmission assembly further includes: a first shaft, and the second helical gear and the first spur gear are connected to the first shaft.

28. The cover assembly according to claim 27, characterized in that: An extending direction of the worm intersects with an extending direction of the motor shaft, and an extending direction of the first shaft intersects with an extending direction of the worm and is parallel to extending directions of the motor shaft and the output shaft.

29. The cover assembly according to claim 24, characterized in that: The first transmission mechanism includes helical teeth arranged on the motor shaft; the first transmission assembly includes: a third helical gear meshing with the helical teeth; and The second spur gear is coaxially arranged with the third helical gear and is transmission-connected with the second transmission assembly.

30. The cover assembly according to claim 29, characterized in that: The first transmission assembly also includes a second shaft, and the third helical gear and the second spur gear are connected to the second shaft.

31. The cover assembly according to claim 29, characterized in that: The second transmission combination comprises: a third spur gear meshing with the second spur gear; and The fourth spur gear is coaxially arranged with the third spur gear and meshes with the second transmission mechanism.

32. The cover assembly according to claim 31, characterized in that: The second transmission assembly further includes: a third shaft, and the third spur gear and the fourth spur gear are connected to the third shaft.

33. The cover assembly according to claim 32, characterized in that: The first transmission assembly further includes a second shaft, and the third helical gear and the second spur gear are connected to the second shaft; An extending direction of the second shaft intersects with an extending direction of the motor shaft, and the extending direction of the second shaft is the same as an extending direction of the third shaft and the output shaft.

34. The cover assembly according to claim 22, characterized in that: The second transmission mechanism comprises an output gear, and the output gear is rotatably sleeved on the output shaft.

35. The cover assembly according to claim 1, characterized in that: A ratio of a minimum value of the first external force to a minimum value of the second external force is greater than or equal to 1.5 and less than or equal to 20.

36. The cover assembly according to claim 1 or 35, characterized in that: The minimum value of the first external force is greater than or equal to 5N and less than or equal to 50N, and / or the minimum value of the second external force is greater than or equal to 0.5N and less than or equal to 20N.

37. A vehicle, characterized in that: The vehicle comprises the flap assembly according to any one of claims 1 to 36.

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