Cover assembly

Abstract

The invention provides a cover assembly. The cover assembly comprises a shell (102), a cover (101) and an actuator (103). A cover (101) movable relative to the housing (102) and having an open position and a closed position, the cover (101) being movable in an opening direction from the closed position to the open position and being movable in a closing direction from the open position to the closed position; the actuator (103) can drive the cover (101) to move and can keep the cover (101) in the closed position or the open position, and the keeping force of the actuator (103) on the cover (101) in the opening direction is larger than the keeping force of the actuator (103) on the cover (101) in the closing direction. According to the actuator, the requirements that an operator can close the cover through the pushing action and the cover is not prone to loosening at the closing position can be met at the same time.

Description

Technical Field

[0001] The present application relates to a cover assembly, in particular to a cover assembly applied to a charging port or a fuel filler port of a vehicle. Background Art

[0002] A cover assembly is provided at the fuel filler cap or charging port of the vehicle, and the cover assembly is used to open and close the fuel filler cap or charging port of the vehicle. The fuel filler cap or charging port cover has an open position and a closed position, and the fuel filler cap or charging port cover can move between the open position and the closed position. When refueling or charging is not required, the fuel filler cap or charging port cover needs to be in the closed position; when refueling is required, the fuel filler cap or charging port cover needs to be in the open position. Summary of the invention

[0003] The present application provides a cover assembly, comprising: a shell, a cover and an actuator; the cover can move relative to the shell and has an open position and a closed position, the cover can move from the closed position to the open position along the opening direction, and can move from the open position to the closed position along the closing direction; the actuator is connected to the cover, the actuator is configured to provide a holding force to the cover to hold the cover in the closed position or the open position, and the holding force provided by the actuator in the closed position and the open position are different in magnitude.

[0004] According to the lid assembly as described above, the holding force of the actuator on the lid in the opening direction is greater than the holding force on the lid in the closing direction.

[0005] In the cover assembly as described above, the actuator includes a clutch, which is transmission-connected to the cover and provides a holding force for the cover, and the clutch can be separated and engaged. In the open position or the closed position of the cover, when the external force applied to the cover exceeds the holding force of the clutch, the clutch is separated to allow the cover to leave the corresponding position.

[0006] In the cover assembly as described above, the actuator further comprises a power device, the clutch is disposed between the power device and the cover, and the power device is configured to drive the cover to move between an open position and a closed position when the clutch is engaged.

[0007] As described above, the clutch of the cover assembly comprises a first rotating component, a second rotating component and a clutch mechanism, wherein the clutch mechanism is connected to the first rotating component, and the clutch mechanism is sleeved on the second rotating component, and can rotate together with the second rotating component to engage the first rotating component and can rotate relative to the second rotating component to separate the first rotating component and the second rotating component.

[0008] In the cover assembly as described above, the clutch mechanism is a spring, the spring has a main body and a connecting end, the connecting end is connected to the first rotating component, the main body is sleeved on the second rotating component and has an interference fit with the second rotating component.

[0009] In the cover assembly as described above, the second rotating component can rotate relative to the first rotating component in the first direction and the second direction, when the second rotating component rotates in the first direction, there is a first engagement force between the spring and the second rotating component, and when the second rotating component rotates in the second direction, there is a second engagement force between the spring and the second rotating component, and the first engagement force is greater than the second engagement force; wherein the first direction of the second rotating component is consistent with the opening direction of the cover, and the second direction of the second rotating component is consistent with the closing direction of the cover.

[0010] According to the lid assembly as described above, the holding torque of the actuator in the opening direction of the lid is greater than 3 N·m, and the holding torque of the actuator in the closing direction of the lid is less than 1.8 N·m.

[0011] As described above in the cover assembly, the second rotating component comprises a front section, the clutch mechanism is sleeved on the front section, and the front section comprises at least one oil storage tank extending along the axial direction.

[0012] In the cover assembly as described above, the first rotating component is transmission-connected to the power device, and the second rotating component is transmission-connected to the cover.

[0013] In the cover assembly as described above, the connecting end is located on a side of the clutch mechanism facing the first rotating component.

[0014] In the cover assembly as described above, the actuator includes a sensor, and the sensor is capable of sensing the disengagement state of the clutch.

[0015] As for the cover assembly as described above, the actuator is configured such that when the sensor senses that the clutch is disengaged in the opening direction or the closing direction of the cover, the power device drives the cover to move in the corresponding direction.

[0016] In the present application, the cover assembly includes an actuator, and the actuator includes a clutch. The clutch can provide different holding forces in different rotational directions to simultaneously meet the requirements that the operator can close the cover by pushing, and that the cover is not easy to loosen in the closed position. In the present application, no additional locking mechanism is required to keep the cover in the locked position, so that the structure and control logic of the cover assembly are relatively simple. The spring clutch used in the present application can reduce the noise generated by the clutch in a disengaged state. The clutch in the present application has an oil storage tank that can store lubricating oil to avoid lack of lubrication when the clutch is engaged or disengaged, and further reduce the noise of the clutch in a disengaged state. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1A is a three-dimensional diagram of the cover assembly in the present application in an open state;

[0018] Figure 1B yes Figure 1A A three-dimensional diagram of the middle cover assembly in a closed state;

[0019] Figure 1C yes Figure 1A Exploded view of the middle cover assembly;

[0020] Figure 2 yes Figure 1C A perspective view of the middle shell;

[0021] Figure 3 yes Figure 1C A three-dimensional view of the middle cover;

[0022] Figure 4A yes Figure 1C A three-dimensional diagram of the actuator;

[0023] Figure 4B yes Figure 4A A perspective view of the middle actuator with the actuator housing hidden;

[0024] Figure 4C yes Figure 4B A perspective view of the actuator with the housing hidden from another angle;

[0025] Figure 5A is a three-dimensional diagram of an embodiment of a clutch in the present application;

[0026] Figure 5B Figure 5A Exploded view of the middle clutch;

[0027] Fig. 6A yes Figure 5B A three-dimensional view of the first rotating component;

[0028] Figure 6B yes Fig. 6A A three-dimensional view of the first rotating component from another angle;

[0029] Figure 7 yes Figure 5B A perspective view of the second rotating component;

[0030] Figure 8 yes Figure 5B A perspective view of the middle spring 519;

[0031] Fig. 9 yes Figure 5A A cross-sectional view of the clutch cut along the axial direction;

[0032] Fig.10 yes Figure 5B A three-dimensional view of the second rotating component and the spring. DETAILED DESCRIPTION

[0033] Various specific embodiments of the present invention will be described below with reference to the accompanying drawings that form a part of this specification. It should be understood that although terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", etc., are used in this application to describe various example structural parts and elements of the present application, these terms are used here only for the purpose of convenience of description and are determined based on the example orientations shown in the accompanying drawings. Since the embodiments disclosed in the present application can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. Where possible, the same or similar figure numbers used in this application refer to the same parts.

[0034] Figure 1A is a stereoscopic view of the cover assembly in the present application in an open state, Figure 1B yes Figure 1A A three-dimensional diagram of the middle cover assembly in a closed state, Figure 1C yes Figure 1A Exploded view of the middle cover assembly. Figure 1A , Figure 1B and Figure 1C As shown, the cover assembly 100 includes a cover 101, a housing 102 and an actuator 103. The cover 101 can move relative to the housing 102, so that the cover 101 has an open position and a closed position relative to the housing 102. The actuator 103 is disposed on the housing 102 and connected to the cover 101. The actuator 103 is fixedly connected to the cover 101 through a shaft 110, so that the actuator 103 can drive the cover 101 to rotate, so that the cover 101 can move between the open position and the closed position.

[0035] In one embodiment of the present application, the cover 101 rotates relative to the housing 102. When the cover 101 rotates from the closed position to the open position, the cover 101 rotates along the opening direction R1; when the cover 101 rotates from the open position to the closed position, the cover 101 rotates along the closing direction R2.

[0036] The actuator 103 is connected to a control device (not shown in the figure), and can receive a signal from the control device to drive the cover 101 to rotate.

[0037] Figure 2 yes Figure 1C The three-dimensional diagram of the middle shell, such as Figure 2 As shown, the housing 102 includes a main body 201 and a side portion 202. The main body 201 is aligned with the charging port or refueling port area of ​​the vehicle. An opening 205 is provided on the main body 201 for installing the charging port or refueling port. The cover 101 can cover or expose the opening 205 for the operator to charge or refuel. The side portion 202 is provided with one side of the main body 201 for installing the actuator 103 and the rod of the cover 101.

[0038] Figure 3 yes Figure 1C A three-dimensional diagram of the middle cover, such as Figure 3 As shown, the cover 101 includes a body 301 and a rod 302. The body 301 is generally flat and can cover the opening 205 on the main body 201. The first end 321 of the rod 302 is connected to one side of the body 301, and the second end 322 is connected to the actuator 103. The rod 302 is a gooseneck structure.

[0039] Figure 4A yes Figure 1C A three-dimensional diagram of the actuator. Figure 4B yes Figure 4A A three-dimensional view of the actuator with the actuator housing hidden. Figure 4C yes Figure 4B Another perspective view of the actuator with the housing hidden.

[0040] like Figure 4A-4CAs shown, the actuator 103 includes an actuator housing 413, a motor 405, an input gear assembly 402, an output gear 403, a clutch 410 and a circuit board 404. The motor 405, the input gear assembly 402, the output gear 403, the clutch 410 and the circuit board 404 are located in the actuator housing 413. The actuator housing 413 is provided with a shaft mounting hole 433, and the output gear 403 can be connected to the shaft 110 through the shaft mounting hole 433. The motor 405 has a worm 451, and the worm 451 can be driven to rotate. The input gear assembly 402 includes a first gear 421 and a second gear 422, the first gear 421 is meshed with the worm 451, and the second gear 422 is meshed with the first gear 421 and one end of the clutch 410. The output gear 403 is meshed with the other end of the clutch 410 and is connected to the cover 101 through the shaft 110. When the worm 451 rotates, the power is sequentially transmitted to the cover 101 through the input gear assembly 802, the clutch 410 and the output gear 403. When an external force is applied to the cover 101 and exceeds a predetermined range of the clutch 410, the clutch 410 can be disengaged, interrupting the power transmission between the input gear assembly 402 and the output gear 403. In the present application, the motor is a power device.

[0041] The output gear 403 has a gear body 436 and a shaft 435, the gear body 436 is fixedly connected to the shaft 435, and the gear body 436 can mesh with the clutch 410. The shaft 435 is rotatably connected to the actuator housing 413, and the output gear 403 can rotate around the shaft 435. A sensor 445 is provided on the circuit board 404. One end of the shaft 435 passes through the circuit board 404 and is close to the sensor 445. The sensor 445 can sense the rotation of the shaft 435. The sensor 445 is connected to a control device (not shown in the figure) and can send a signal to the control device.

[0042] Figure 5A is a stereogram of an embodiment of a clutch in this application, Figure 5B Figure 5A Exploded view of the clutch.

[0043] like Figure 5A and Figure 5BAs shown, the clutch 410 includes a first rotating component 501, a clutch mechanism 502, a second rotating component 505 and a shaft 509. The shaft 509 passes through the first rotating component 501, the clutch mechanism 502 and the second rotating component 505. The first rotating component 501, the clutch mechanism 502 and the second rotating component 505 can rotate around the shaft 509, but cannot move radially relative to the shaft 509. One of the first rotating component 501 and the second rotating component 505 is a driving component connected to the power input end; the other is a transmission component connected to the power output end. In one embodiment of the present application, the first rotating component 501 is connected to the power input end, and the second rotating component 505 is connected to the power output end. The clutch mechanism 502 is arranged between the first rotating component 501 and the second rotating component 505. The clutch mechanism 502 is a spring 519. The spring 519 is sleeved on the second rotating component 505 and is clamped on the first rotating component 501. The spring 519 can be engaged with or disengaged from the second rotating member 505 , thereby connecting or disconnecting power transmission between the first rotating member 501 and the second rotating member 505 .

[0044] Fig. 6A yes Figure 5B A perspective view of the first rotating component, Figure 6B yes Fig. 6A A three-dimensional view of the first rotating component from another angle. Fig. 6A and 6BAs shown, the first rotating component 101 is a gear, whose outer contour is roughly cylindrical, and has a first axial end 611 and a second axial end 612, and a channel 635 that runs through the first axial end 611 and the second axial end 612. The channel 635 is used to install the shaft 509. The first rotating component 501 includes a first end face 643, a second end face 644 and a side portion 645. The first end face 643 is located at the first axial end, the second end face 644 is located at the second axial end 612, and the side portion 645 is connected to the first end face 643 and the second end face 644 and extends along the circumferential direction. A first set of teeth 636 is provided on the side portion 645, and the first set of teeth 636 extends along the axial direction of the first rotating component 501 and extends from the first axial end 611 to the second axial end 612. The first rotating component 501 has an installation cavity 605 and a clamping portion 617, and the installation cavity 605 is formed by being recessed from the second end face 644 toward the inside of the first rotating component 501. The mounting cavity 605 is located at the center of the first rotating component and has a spacing with the side portion 645. The clamping portion 617 is a groove 619, and the second end surface 644 of the groove 619 is formed to be recessed toward the inside of the first rotating component 501 and communicated with one side of the mounting cavity 605. That is, the groove extends from one side of the mounting cavity 605 toward the side portion 645. The first rotating component 501 also includes a convex portion 665, which extends from the first end surface 643 in the axial direction. The channel 635 passes through the convex portion 665. The convex portion 665 enables the channel 635 to have a certain length along the axial direction.

[0045] Figure 7 yes Figure 5B A three-dimensional diagram of the second rotating component. Figure 7 The second rotating component 505 is a gear and extends in the axial direction. Along the axial direction, the second rotating component 505 includes a front section 701, a middle section 702 and a rear section 703. The front section 701 and the rear section 703 are respectively connected to the two ends of the middle section 702. The front section 702 is arranged toward the first rotating component 501. The diameter of the front section 701 is smaller than the diameters of the middle section 702 and the rear section 703. The front section 701 is used to sleeve the spring 519. The front section 701 has a plurality of oil storage grooves 740 extending in the axial direction, and the oil storage grooves 740 extend inwardly from the outer surface of the front section 701 and gradually narrow, and its cross section is roughly V-shaped. The oil storage grooves 740 are used to store lubricating oil to avoid noise caused by insufficient lubrication between the spring 519 and the front section 701.

[0046] The rear section 703 is provided with a second set of teeth 736, which extends in the axial direction of the rear section 703 and can mesh with the input gear set 702. The middle section 702 has a substantially smooth outer surface. In some embodiments, the second rotating component 505 includes the front section 701 and the rear section 703, but does not include the middle section 702.

[0047] The second rotating member 505 further includes a channel 750 that penetrates the second rotating member 505 in the axial direction. The shaft 509 can pass through the central channel 750.

[0048] Figure 8 yes Figure 5B A three-dimensional view of the middle spring 519. Figure 8 As shown, the spring 519 includes a main body 805 and a connecting end 806. The spring 519 is formed by bending a metal wire, and the metal wire has a first end 811 and a second end 812. The metal wire extends from the first end 811 along a spiral direction to form a main body 805 that is roughly annular, and the connecting end 806 extends outward from the main body 805. The connecting end 806 is located at the second end 812 and extends roughly along a straight line. The inner diameter of the main body 805 is slightly smaller than the outer diameter of the front section 701 of the second rotating component 505, so that the spring 519 can be interference-fitted with the front section 701. The connecting end 806 is located on the side facing the first rotating component 501. In one embodiment of the present application, the number of turns of the main body 805 of the spring 519 is less than three turns.

[0049] Fig. 9 yes Figure 5A A cross-sectional view of the clutch in the axial direction, as shown in FIG. Fig. 9 As shown, the spring 519 is sleeved on the front section 701 of the second rotating component 505, and is at least partially located in the cavity 605 of the first rotating component 501. The spring 519 is connected to the second rotating component 505 by interference fit, and is connected to the first rotating component 501 through the connecting end 806. The connecting end 806 can be snapped into the snap-on portion 617 of the first rotating component 501 to connect the spring 519 to the first rotating component 501. The shaft 509 passes through the first rotating component 501, the spring 519 and the second rotating component 505, so that the first rotating component 501 and the second rotating component 505 are aligned in the axial direction and cannot move relative to each other in the radial direction.

[0050] Fig.10 yes Figure 5B A three-dimensional diagram of the second rotating component and the spring. Fig.10As shown, the spring 519 is sleeved on the front section 701 and has an interference fit with the front section 701, so that there is a certain engagement force between the front section 701 of the spring 519 and the front section. When no external force is applied or a small external force is applied, the spring 519 is fixedly connected to the second rotating component 505, and the two move synchronously. The connecting end 806 of the spring 519 enters the clamping portion 617 of the first rotating component 501, so that the spring 519 is connected to the first rotating component 501. The rear section 703 is transmission-connected with the cover 101 through the output gear 403, so that the rotational movement of the cover 101 can be transmitted to the second rotating component 505 through the output gear 403. When the cover 101 rotates along the opening direction R1, the second rotating component 505 rotates relative to the first rotating component 501 along the clockwise direction as shown by the arrow, that is, the first direction R3, and when the cover 101 rotates along the closing direction R2, the second rotating component 505 rotates relative to the first rotating component 501 along the counterclockwise direction as shown by the arrow, that is, the second direction R4.

[0051] Combination Figure 5B and Fig.10 As shown, when the motor 405 controls the worm 451 not to rotate, the first rotating component 501 of the input gear assembly 402 and the clutch 410 remains stationary and does not rotate. When an external force is applied to the cover 101 in the closing direction R2, so that the cover 101 has a tendency to move in the closing direction R2, the second rotating component 505 has a tendency to rotate in the counterclockwise direction (i.e., the second direction R4). Since the connecting end 806 of the spring 519 is connected to the first rotating component and the connecting end 806 remains stationary, the first end 811 of the spring 519 has a tendency to rotate in the second direction R4 relative to the connecting end 806, that is, the spring 519 deforms in the direction of relaxation. That is, the main body 805 of the spring 519 has a tendency to expand its inner diameter, so that the engagement force (i.e., friction force) between the main body of the spring 519 and the upper section 701 of the second rotating component 505 is reduced. When the external force applied to the cover 101 is greater than the friction force between the spring 519 and the second rotating member 505, the second rotating member 505 can rotate relative to the spring 519, so that the rotational movement of the second rotating member 505 cannot be transmitted to the first rotating member 501, and the clutch 410 is disengaged. In the closing direction, the maximum friction force between the spring 519 and the second rotating member is the holding force of the clutch 410 in the opening direction. Therefore, when the cover 101 is in the open state and is pushed by an external force to move in the closing direction, the clutch 410 inside the actuator 103 can provide a certain holding torque.

[0052] Similarly, when the motor 405 controls the worm 451 not to rotate, the input gear assembly 402 and the first rotating component 501 of the clutch 410 remain stationary and do not rotate. When an external force is applied to the cover 101 in the opening direction R1, so that the cover 101 has a tendency to move in the opening direction R1, the second rotating component 505 has a tendency to rotate in the clockwise direction (i.e., the first direction R3). Since the connecting end 806 of the spring 519 is connected to the first rotating component and the connecting end 806 remains stationary, the first end 811 of the spring 519 has a tendency to rotate in the first direction R3 relative to the connecting end 806, that is, the spring 519 bends in the direction of clasping. That is, the main body 805 of the spring 519 has a tendency to reduce its inner diameter, thereby increasing the engagement force (i.e., friction force) between the main body of the spring 519 and the upper section 701 of the second rotating component 505. When the external force applied to the cover 101 is greater than the friction force between the spring 519 and the second rotating member 505, the second rotating member 505 can rotate relative to the spring 519, so that the rotational movement of the second rotating member 505 cannot be transmitted to the first rotating member 501, and the clutch 410 is disengaged. In the opening direction, the maximum friction force between the spring 519 and the second rotating member is the holding force of the clutch 410 in the closing direction. Therefore, when the cover 101 is in the closed state and is pushed by an external force to move in the opening direction, the clutch 410 inside the actuator 103 can provide a certain holding torque.

[0053] Due to the shape of the spring 519, the holding force of the clutch 410 in the closing direction is greater than the holding force in the opening direction. In other words, the clutch 410 can provide different holding forces in different rotation directions.

[0054] In one application of the present application, the actuator 103 is applied to the control of the vehicle charging port or the fuel filler cap. When the cover 101 needs to be opened, the control device sends a signal to the actuator 103, so that the actuator 103 drives the motor 405 to rotate forward, and transmits the rotational motion to the cover 101 through the input gear assembly 402, the clutch 410 and the output gear 403, so that the cover 101 moves from the closed position to the open position along the opening direction R1. When the cover 101 needs to be closed, the control device sends a signal to the actuator 103, so that the actuator 103 drives the motor 405 to rotate in the opposite direction, and transmits the rotational motion to the cover 101 through the input gear assembly 402, the clutch 410 and the output gear 403, so that the cover 101 moves from the open position to the closed position along the closing direction R2. In the process of the motor 405 driving the cover 101 to move, the clutch 410 remains engaged so that the power of the motor 405 can be transmitted to the cover 101.

[0055] When the cover 101 is in the open position, in some application scenarios, the operator wishes to apply an external force along the closing direction R2 to the cover 101 to close the cover 101, rather than closing it by operating the corresponding closing button. For example, the operator is outside the vehicle to perform charging or refueling operations. After the operation is completed, the operator wishes to immediately close the cover 101, rather than entering the vehicle and operating the closing button. In this application, the operator can push the cover 101 to trigger the actuator to work to close the cover 101.

[0056] See also Figure 4B When the operator applies an external force along the closing direction R2 to the cover 101, the cover 101 generates a movement trend along the closing direction R2, the output gear 403 generates a movement trend of rotating along the fourth direction R6, and the output gear 403 drives the clutch 410 to generate a movement trend of rotating along the second direction R4. In other words, the cover 101 applies a force to the second rotating component 505 of the clutch 410 through the output gear 403, so that the second rotating component 505 generates a movement trend as shown in FIG. Fig.10The force applied by the operator can overcome the friction between the spring 519 and the second rotating member 505, so that the second rotating member 505 can rotate a certain angle. When the second rotating member 505 rotates in the second direction R4, the output gear 403 also rotates in the fourth direction R6, so that the shaft 435 connected to the output gear 403 rotates in the third direction R6. The sensor 445 can sense the rotation of the shaft 435 and send a signal to the control device. After the control device recognizes the signal from the sensor 445, it sends a signal to the actuator 103, so that the actuator 103 drives the cover 101 to rotate in the closing direction R2. In other words, when the operator applies an external force to the cover 101, the clutch 410 can be separated and send a recognizable signal to the control device, so that the control device can control the actuator 103 to start. In this application, the operator needs to apply a short external force to the cover 101 so that the clutch 410 is temporarily separated, and a signal is sent to the control device to trigger the actuator 103 to work. The closing process of the cover 101 is still completed by the actuator 103, and the operator does not need to continuously apply external force. In order to give the operator a better experience, the holding force of the clutch 410 in the second direction R4 needs to be within a suitable range. The movement of the second rotating component 505 of the clutch 410 in the second direction R4 causes the spring 519 of the clutch 410 to expand its inner diameter, thereby reducing the friction between the spring 519 and the second rotating component 505, so that the holding torque of the clutch 410 in the second direction R4 can be set in a smaller range. In one embodiment of the present application, the holding torque of the clutch 410 in the second direction R4 is less than 0.6Nm, so that the holding torque provided by the actuator 103 to the cover 101 in the closing direction R2 of the cover 101 is less than 1.8Nm. The setting of the holding torque range in the closing direction R2 can achieve the closing of the cover 101 with a smaller thrust, so that the operator has a better sense of control.

[0057] When the cover is in the closed position, it is necessary to stabilize it in the closed position to prevent the cover 101 from opening due to external factors such as vehicle vibration. When the cover 101 in the closed position is subjected to an external force to generate a movement trend in the opening direction R1, the output gear 403 generates a movement trend to rotate along the third direction R5, and the output gear 403 drives the clutch 410 to generate a movement trend to rotate along the first direction R3. In the present application, the movement trend of the second rotating component 505 of the clutch 410 in the first direction R3 causes the spring 519 of the clutch 410 to have a trend of reducing its inner diameter, thereby increasing the friction between the spring 519 and the second rotating component 505, and requiring a larger force to separate the spring 519 from the second rotating component 505. In one embodiment of the present application, the holding torque of the clutch 410 in the first direction R3 is greater than 1Nm, so that the holding torque provided by the actuator 103 to the cover 101 in the opening direction R1 of the cover 101 is greater than 3Nm. The range of the holding torque in the opening direction R1 enables the cover 101 to have a larger holding torque, so that the cover 101 is not easily opened due to external conditions such as bumps and vibrations.

[0058] In other embodiments of the present application, the holding torque of the clutch 410 in the second direction R4 and the first direction R3 is determined following the setting position of the clutch 410 and the gear size.

[0059] In the present application, the clutch 410 can provide different holding forces in different rotational directions to simultaneously meet the requirements that the operator can close the cover by pushing, and that the cover is not easy to loosen in the closed position. In the present application, no additional locking mechanism is required to keep the cover in the locked position, making the cover assembly structure and control logic relatively simple. The spring clutch used in the present application can reduce the noise generated by the clutch in the disengaged state. The clutch in the present application has an oil storage tank that can store lubricating oil to avoid lack of lubrication when the clutch is engaged and disengaged, and further reduce the noise of the clutch in the disengaged state.

[0060] Although the present disclosure has been described in conjunction with the examples of the embodiments summarized above, various alternatives, modifications, variations, improvements and / or substantially equivalent solutions, whether known or currently or foreseeable in the near future, may be apparent to those of ordinary skill in the art. In addition, the technical effects and / or technical problems described in this specification are exemplary rather than restrictive; so the disclosure in this specification may be used to solve other technical problems and have other technical effects. Therefore, the examples of the embodiments of the present disclosure set out above are intended to be illustrative rather than restrictive. Various changes may be made without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is intended to include all known or earlier developed alternatives, modifications, variations, improvements and / or substantially equivalent solutions.

Claims

1. A cover assembly, characterized in that include: Housing (102); A cover (101), the cover (101) being movable relative to the housing (102) and having an open position and a closed position, the cover (101) being movable from the closed position to the open position along an opening direction, and being movable from the open position to the closed position along a closing direction; An actuator (103) is connected to the cover (101), and the actuator (103) is configured to provide a retaining force to the cover (101) so as to retain the cover (101) in the closed position or the open position, wherein the retaining force provided by the actuator (103) in the closed position or the open position is different in magnitude.

2. The cover assembly according to claim 1, wherein: The holding force of the actuator on the cover (101) in the opening direction is greater than the holding force on the cover (101) in the closing direction.

3. The cover assembly according to claim 1, wherein: The actuator (103) comprises a clutch (410), which is in driving connection with the cover (101) and provides a holding force for the cover (101). The clutch (410) can be separated and engaged. When the external force applied to the cover (101) exceeds the holding force of the clutch when the cover (101) is in an open position or a closed position, the clutch (410) is separated to allow the cover (101) to leave the corresponding position.

4. The cover assembly according to claim 3, wherein: The actuator further comprises a power device, wherein the clutch (410) is arranged between the power device and the cover (101), and the power device is configured to drive the cover (101) to move between an open position and a closed position when the clutch (410) is engaged.

5. The cover assembly according to claim 3, wherein: The clutch (410) comprises a first rotating component (501), a second rotating component (505) and a clutch mechanism (502); the clutch mechanism (502) is connected to the first rotating component (501), and the clutch mechanism (502) is sleeved on the second rotating component (505). The clutch mechanism (502) can rotate together with the second rotating component (505) so that the first rotating component (501) and the second rotating component (505) are engaged, and can rotate relative to the second rotating component (505) so that the first rotating component (501) and the second rotating component (505) are separated.

6. The cover assembly according to claim 5, wherein: The clutch mechanism (502) is a spring (519), and the spring (519) has a main body (805) and a connecting end (806), wherein the connecting end (806) is connected to the first rotating component (501), and the main body (805) is sleeved on the second rotating component (505) and is interference fit with the second rotating component (505).

7. The cover assembly according to claim 6, wherein: The second rotating component (505) can rotate relative to the first rotating component (501) along a first direction (R3) and a second direction (R4); when the second rotating component (505) rotates along the first direction (R3), a first engagement force exists between the spring (519) and the second rotating component (505); when the second rotating component (505) rotates along the second direction (R4), a second engagement force exists between the spring (519) and the second rotating component (505); the first engagement force is greater than the second engagement force; The first direction (R3) of the second rotating part (505) is consistent with the opening direction of the cover (101), and the second direction (R4) of the second rotating part (505) is consistent with the closing direction of the cover (101).

8. The cover assembly according to claim 1, wherein: The holding torque of the actuator (103) in the opening direction (R1) of the cover (101) is greater than 3 N·m, and the holding torque of the actuator (103) in the closing direction (R2) of the cover (101) is less than 1.8 N·m.

9. The cover assembly according to claim 5, wherein: The second rotating component (505) comprises a front section (701), the clutch mechanism (502) is sleeved on the front section (701), and the front section (701) comprises at least one oil storage groove (740) extending along the axial direction.

10. The cover assembly according to claim 5, wherein: The first rotating component (501) is transmission-connected to the power device, and the second rotating component (502) is transmission-connected to the cover (101).

11. The cover assembly according to claim 6, wherein: The connecting end (806) is located on a side of the clutch mechanism (502) facing the first rotating component (501).

12. The cover assembly according to claim 4, wherein: The actuator (103) includes a sensor (445) capable of sensing a disengagement state of the clutch (410).

13. The cover assembly of claim 12, wherein: The actuator (103) is configured such that, in the opening direction or the closing direction of the cover, when the sensor (445) senses that the clutch (410) is disengaged, the power device drives the cover (101) to move in the corresponding direction.

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