Actuator, suspension system, and vehicle

Abstract

An actuator, a suspension system, and a vehicle. The actuator comprises a first component and a second component, and a first power assembly and a second power assembly. The actuator has a first operating mode and a second operating mode. In the first operating mode, the first power assembly drives the first component and the second component to move relative to each other. In the second operating mode, both the first power assembly and the second power assembly drive the first component and the second component to move relative to each other.

Description

Actuators, suspension system and vehicle Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to actuators, suspension systems and vehicles. Background Technology

[0002] Passenger vehicle suspension systems are required to cover the performance requirements of all operating conditions, but common operating conditions generally account for about 85% of all operating conditions. In these common operating conditions, the force and speed required by the suspension system are significantly lower than the requirements of peak operating conditions.

[0003] In existing active suspension technologies based on rotary electric motors, the difference between the rated and peak parameters of the motor is often quite large in order to meet the performance requirements under extreme conditions. This results in a large motor size (rotor diameter) and weight (especially rotor weight). During the medium- and high-frequency reciprocating motion of the suspension system, the large moment of inertia of the motor directly affects the responsiveness of the suspension system, and thus affects the overall vehicle motion control performance. Summary of the Invention

[0004] The purpose of this application is to provide actuators, suspension systems, and vehicles that address the problem that a large moment of rotational inertia of the motor directly affects the responsiveness of the suspension system.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] In a first aspect, this application provides an actuator, which includes a first component and a second component, as well as a first power assembly and a second power assembly; the actuator has a first operating mode and a second operating mode, in the first operating mode, the first power assembly drives the first component and the second component to move relative to each other; in the second operating mode, in the first power assembly and the second power assembly, at least the second power assembly drives the first component and the second component to move relative to each other.

[0007] The actuator provided in this application includes a first operating mode and a second operating mode. In the first operating mode, a first power component drives a first component and a second component to move relative to each other, while the second power component does not participate in the operation. In the second operating mode, the first and second power components can jointly drive the first and second components to move relative to each other, or only the second power component can drive the first and second components to move relative to each other.

[0008] In the second operating mode of the actuator, the participation of the first power component in driving can be determined based on road conditions and the rated power of the second power component. When the rated power of the second power component is designed to be relatively large, simultaneously meeting the vehicle's needs under both normal and extreme operating conditions, in the second operating mode, only the second power component can drive the relative movement of the first and second components. When the rated power of the second power component can meet the vehicle's needs under normal operating conditions but is insufficient to meet the vehicle's needs under extreme operating conditions, in the second operating mode, both the first and second power components can jointly drive the relative movement of the first and second components. Normal operating conditions refer to the vehicle traveling on roads with relatively good conditions, such as urban roads, where the vehicle's suspension experiences less road excitation; extreme operating conditions refer to the vehicle traveling on roads with relatively poor conditions, such as mountain roads, where the vehicle's suspension experiences greater road excitation.

[0009] The actuator provided in this embodiment includes a first power component and a second power component. Compared with an actuator that only includes one drive component, the actuator in this embodiment is driven only by the first power component in the first working mode to realize the relative movement of the first component and the second component. Thus, when designing the first power component, its rated power does not need to meet the needs of the vehicle under all working conditions, but only needs to meet the needs of the vehicle under normal working conditions. The rated power of the first power component is smaller, the weight is lighter, and the moment of inertia of the first power component is smaller, making it easier to control.

[0010] In some embodiments, in the second operating mode, both the first power component and the second power component drive the first component and the second component to move relative to each other.

[0011] The actuator provided in this application embodiment, in a first operating mode, involves a first power component driving a first component and a second component to move relative to each other; in a second operating mode, both the first and second power components drive the first and second components to move relative to each other. The actuator can select either the first or second operating mode based on actual operating conditions, allowing the second power component to selectively operate or not operate depending on the conditions. In other words, the second power component is not always operational during actuator operation. Furthermore, in the first operating mode, only the first power component operates; in the second operating mode, both the first and second power components operate simultaneously, meaning that both components must jointly meet the maximum power requirement of the second operating mode. Thus, neither the first nor the second power component needs to meet the maximum power requirement of the second operating mode.

[0012] In this way, compared to using a single motor to drive the actuator under all operating conditions, the large moment of inertia of the drive components during medium- and high-frequency reciprocating motion of the actuator can be avoided, which would affect the responsiveness of the suspension system. This improves the response speed of the suspension system and enhances the overall vehicle motion control.

[0013] In some embodiments, the actuator further includes: a separation and engagement switching component, which is disposed between the first power component and the second power component; in a first operating mode, the separation and engagement switching component separates the first power component and the second power component, and the first power component outputs a driving force to drive the first component and the second component to move relative to each other; in a second operating mode, the separation and engagement switching component couples the first power component and the second power component, and both the first power component and the second power component output a driving force to drive the first component and the second component to move relative to each other.

[0014] In some embodiments, the first power assembly is connected to the first component via a transmission; in a first operating mode, the first power assembly outputs a driving force to the first component to drive the first component and the second component to move relative to each other; in a second operating mode, the first power assembly and the second power assembly output a driving force to the first component to drive the first component and the second component to move relative to each other.

[0015] In some embodiments, both the first power component and the second power component are rotary drive components.

[0016] In some embodiments, the actuator further includes a motion conversion component adapted to convert the rotational motion output by the first power component in a first operating mode and the rotational motion output by the first power component and the second power component in a second operating mode into a relative linear movement between the first component and the second component.

[0017] In some embodiments, the motion conversion assembly includes a lead screw and a nut connected to the lead screw; in a first operating mode, a first power assembly outputs power to one of the lead screw and the nut; in a second operating mode, a first power assembly and a second power assembly output power to one of the lead screw and the nut; the other of the lead screw and the nut is connected to one of the first component and the second component to drive one of the first component and the second component to move linearly relative to the other of the first component and the second component.

[0018] In some embodiments, the component consisting of the first component and the second component is the first component, and at least one of the first power component and the second power component is located on the periphery of the first component.

[0019] In some embodiments, the first power assembly is arranged along a first direction with the first component, and the second power assembly is located around the first component; wherein, the first direction is parallel to the relative movement direction of the first component and the second component.

[0020] In some embodiments, a transmission component is further provided between the first power component and the second power component, and a separation and engagement switching component is provided between the transmission component and the second power component.

[0021] In some embodiments, the transmission component is a gear transmission component.

[0022] In some embodiments, the transmission assembly includes a first gear, a third gear, and at least one second gear located between the first gear and the third gear; the first gear is connected to a first power assembly, the second gear is connected to a disengagement / engagement switching assembly, and the first gear, at least one second gear, and the third gear mesh sequentially.

[0023] In some embodiments, the transmission assembly includes a fourth gear, a fifth gear, a sixth gear, and a seventh gear. The fifth gear is fixedly connected to a lead screw, and a disengagement / engagement switching assembly is connected between the fourth gear and the lead screw. The sixth gear is connected to a first power assembly and meshes with the fifth gear. The seventh gear is connected to a second power assembly and meshes with the fourth gear.

[0024] In some embodiments, the transmission assembly includes an eighth gear, a ninth gear, and a tenth gear; a disengagement / engagement switching assembly is connected between the eighth gear and the second power assembly; the ninth gear is fixedly connected to the lead screw and meshes with the eighth gear; the tenth gear is connected to the first power assembly and meshes with the ninth gear.

[0025] In some embodiments, the transmission assembly includes a first bevel gear, a second bevel gear, and a third bevel gear; a disengagement / engagement switching assembly is connected between the first bevel gear and the second power assembly; the second bevel gear is connected to the first power assembly and meshes with the first bevel gear; the third bevel gear is fixedly connected to the lead screw and meshes with the first bevel gear.

[0026] In some embodiments, the disengagement and engagement switching assembly includes a first rotating portion and a second rotating portion, one of which is connected to a second power assembly, and the other of which is connected to a transmission assembly; at least a portion of the second rotating portion is movable along the arrangement direction of the first rotating portion and the second rotating portion to couple or separate the second rotating portion from the first rotating portion.

[0027] In some embodiments, the second rotating portion includes a guide seat and a clutch connected to the guide seat, the clutch being movable relative to the guide seat along the arrangement direction of the first rotating portion and the second rotating portion to couple or separate from the first rotating portion.

[0028] In some embodiments, the disengagement / engagement switching assembly further includes a drive member for driving the clutch member to move so as to disengage or couple the clutch member from the first rotating portion.

[0029] In some embodiments, the driving element includes a driving coil, and the clutch element includes a magnetic element.

[0030] In some embodiments, the second rotating portion further includes a second elastic element disposed between the clutch and the guide seat. In the second operating mode, the second elastic element generates an elastic restoring force on the clutch away from the first rotating portion.

[0031] In some embodiments, the disengagement and engagement switching assembly preferably includes a clutch housing, the clutch housing having a third receiving cavity, a first rotating portion and a second rotating portion being disposed within the third receiving cavity; the clutch housing having a second wiring hole communicating with the third receiving cavity, the wiring harness of the first rotating portion and / or the wiring harness of the second rotating portion being led out to the outside of the clutch housing through the second wiring hole.

[0032] In some embodiments, the lead screw includes a threaded section and a first transmission section, the first transmission section being connected to a first power assembly, the threaded section being connected to a nut, and the nut being fixedly connected to a first component.

[0033] In some embodiments, the first power assembly includes a first housing, a first stator, and a first mover. The first housing has a first receiving cavity; the first stator is disposed in the first receiving cavity and is fixedly connected to the first housing; the first mover is disposed in the first receiving cavity and is rotatable relative to the first stator, and the first mover is fixedly connected to a lead screw.

[0034] In some embodiments, the first power assembly may include a bushing assembly disposed between the first mover and the lead screw to achieve connection between the first mover and the lead screw.

[0035] In some embodiments, the bushing assembly includes a first bushing and a second bushing that are separately disposed, and the first bushing and the second bushing are arranged along the axial direction of the lead screw.

[0036] In some embodiments, the first bushing includes a first sleeve portion and a first flange portion, the first sleeve portion being disposed around the first transmission section; the first flange portion being disposed around the first sleeve portion and located on the side of the first stator facing the threaded section, the first flange portion being fixedly connected to the first mover; and / or, the second bushing includes a second sleeve portion and a second flange portion, the second sleeve portion being disposed around the first transmission section; the second flange portion being disposed around the second sleeve portion and located on the side of the first mover opposite to the threaded section, the second flange portion being fixedly connected to the first mover.

[0037] In some embodiments, the actuator further includes a first sensor for detecting the rotational speed of the first power component.

[0038] In some embodiments, the first power assembly includes a first housing, a first stator, and a first mover. The first housing has a first receiving cavity. The first stator is disposed in the first receiving cavity and is fixedly connected to the first housing. The first mover is disposed in the first receiving cavity and is rotatable relative to the first stator. The first mover is fixedly connected to a lead screw. The first sensor includes a third stator and a third mover that are rotatable relative to each other. One of the third stator and the third mover is fixedly connected relative to the first housing, and the other of the third stator and the third mover is fixedly connected relative to the lead screw.

[0039] In some embodiments, the first power assembly further includes a bushing assembly disposed between the first mover and the lead screw to achieve the connection between the first mover and the lead screw; the third mover is disposed around the lead screw and fixedly connected to the bushing assembly, and the third stator is disposed on the outer periphery of the third mover.

[0040] In some embodiments, one of the bushing assembly and the third mover is provided with a second positioning groove, and the other of the bushing assembly and the third mover is provided with a second positioning protrusion; the second positioning groove is recessed radially along the lead screw, and the second positioning protrusion is accommodated within the second positioning groove.

[0041] In some embodiments, the system further includes a transmission assembly connected between the disengagement / engagement switching assembly and the first power assembly; the transmission assembly includes a transmission housing connected to the side of the first housing opposite to the threaded section; and a third mover is fixedly connected to the transmission housing.

[0042] In some embodiments, the transmission box is provided with a second mounting groove, which is recessed from the surface of the transmission box toward the threaded section in a direction opposite to the threaded section, and the third stator is disposed in the second mounting groove.

[0043] In some embodiments, the transmission box is provided with a first protrusion, which protrudes from the surface of the transmission box toward the threaded section into the first receiving cavity, and a second mounting groove is provided in the first protrusion.

[0044] In some embodiments, the first sensor further includes a first terminal box connected to the third stator. The first terminal box contains a first wire harness, which is electrically connected to the third stator and is adapted to be connected to an external power supply.

[0045] In some embodiments, the first protrusion is provided with a clearance notch communicating with the second mounting groove, and the first outlet box is snapped into the clearance notch.

[0046] In some embodiments, the first housing is provided with a first wire hole communicating with the first receiving cavity, and the first wire harness is led out to the outside of the first housing through the first wire hole.

[0047] In some embodiments, the first component includes a first housing, and the second component includes a second housing; the second housing is fixedly connected to the first power assembly, a portion of the first housing is located within the second housing, and the first housing is movable relative to the second housing.

[0048] In some embodiments, a first sliding component is provided between the first housing and the second housing, the first sliding component being used to reduce the frictional force when the first housing and the second housing move relative to each other.

[0049] In some embodiments, the first sliding component and the first housing are interference-fitted; and / or, the first sliding component and the second housing are interference-fitted.

[0050] In some embodiments, the first sliding component is a sliding bearing, a linear bearing, or a ball spline.

[0051] In some embodiments, the second component further includes a first limiting boss, which is connected to the inner wall surface of the second housing and located on the side of the first sliding assembly opposite to the first power assembly, so as to axially limit the first sliding assembly.

[0052] In some embodiments, the second component further includes a second limiting boss, which is connected to the inner wall surface of the second housing and located on the side of the first sliding component facing the first power component, so as to axially limit the first sliding component.

[0053] In some embodiments, the second housing is further provided with a sealing groove, which is located on the side of the first limiting boss facing away from the first sliding component; a sealing element is provided in the sealing groove, which is used to seal the gap between the second housing and the first housing.

[0054] In some embodiments, the second component further includes a second sliding assembly, which is fixedly connected to the second housing and located on the side of the first sliding assembly facing the first power assembly. The second sliding assembly is used to reduce the friction between the first housing and the second housing.

[0055] In some embodiments, the first power assembly includes a first housing, the first housing having a second protrusion protruding from a side surface of the first housing toward the second housing into the second housing; the second protrusion is located on the side of the second sliding assembly toward the first housing and is used to axially limit the second sliding assembly.

[0056] In some embodiments, the second sliding component contacts the first sliding component.

[0057] In some embodiments, the second component further includes a second limiting boss, which is connected to the inner wall surface of the second housing and located between the first sliding component and the second sliding component to axially limit the second sliding component.

[0058] In some embodiments, the second component further includes a third limiting boss, which is connected to the inner wall surface of the second housing and located on the side of the second sliding assembly facing the first housing, so as to axially limit the second sliding assembly.

[0059] In some embodiments, the second sliding assembly includes a plurality of sliding members disposed opposite to each other along a second direction, the sliding members being fixedly connected to the inner wall surface of the second housing, wherein the second direction is perpendicular to the relative movement direction of the first component and the second component.

[0060] In some embodiments, the slider is a plate-like structure.

[0061] In some embodiments, the first housing is provided with a third protrusion, which protrudes from the outer surface of the first housing in a direction opposite to the inner surface of the first housing; along the second direction, the third protrusion has two sliding planes disposed opposite to each other, and one sliding plane is slidably engaged with a slider.

[0062] In some embodiments, a plurality of balls are embedded in the third protrusion, and the plurality of balls are rotatable relative to the third protrusion and in contact with the slider.

[0063] In some embodiments, the second component further includes two second limiting grooves disposed opposite each other along a second direction, and a slider is engaged in one of the second limiting grooves.

[0064] In some embodiments, the first component includes a first housing, and the second component includes a second housing; a portion of the first housing is located within the second housing, and the first housing is movable relative to the second housing; the first housing is provided with an oil inlet communicating with the interior of the first housing, and the oil inlet is adapted to connect to a circulating oil pump.

[0065] In some embodiments, the first component further includes an oil inlet nozzle connected to an oil inlet and adapted to connect to a circulating oil pump.

[0066] In some embodiments, the oil inlet extends from the surface of the first housing opposite to the first power assembly into the interior of the first housing.

[0067] In some embodiments, the lead screw is provided with an oil guide groove, which is recessed from the outer peripheral surface of the lead screw toward the axis of the lead screw and extends along the axial direction of the lead screw to guide lubricating oil to the space between the lead screw and the nut.

[0068] In some embodiments, the first power assembly includes a first housing connected to a second housing; the first housing has a first receiving cavity and a communicating oil hole, the communicating oil hole communicating with the internal space of the first housing and the first receiving cavity.

[0069] In some embodiments, the actuator further includes a first sealing gasket disposed between the second housing and the first housing.

[0070] In some embodiments, the first housing is provided with a first oil outlet, which is adapted to be connected to a circulating oil pump.

[0071] In some embodiments, a first oil outlet is provided in the first oil outlet, and the first oil outlet is adapted to be connected to a circulating oil pump.

[0072] In some embodiments, the actuator further includes a transmission assembly, which includes a transmission housing and a transmission component. The transmission housing is connected to the side of the first housing facing away from the second housing and has a second receiving cavity. The transmission component is disposed in the second receiving cavity and is connected between the disengagement / engagement switching assembly and the first power assembly. The second receiving cavity is provided with lubricating oil, and the transmission component is immersed in the lubricating oil.

[0073] In some embodiments, the actuator further includes a second sealing gasket disposed between the first housing and the transmission housing.

[0074] In some embodiments, the transmission box is further provided with a second through hole, which connects the second receiving cavity and the first receiving cavity; the lead screw passes through the second through hole and is connected to the transmission component.

[0075] In some embodiments, the gap between the lead screw and the second through hole forms an oil guide gap, which connects the second receiving cavity and the first receiving cavity; the transmission box is provided with a second oil outlet, which is adapted to connect to a circulating oil pump.

[0076] In some embodiments, a second oil outlet is provided in the second oil outlet, and the second oil outlet is adapted to be connected to a circulating oil pump.

[0077] In some embodiments, the transmission box is further provided with a first rotary seal, which is disposed between the inner wall surface of the second through hole and the lead screw to seal the gap between the inner wall surface of the second through hole and the lead screw.

[0078] In some embodiments, the second receiving cavity has a second opening on the section opposite to the first housing; the actuator also includes a fork arm and a third sealing gasket, the fork arm being connected to the side of the transmission housing opposite to the first housing and covering the second opening; the third sealing gasket is disposed between the fork arm and the transmission housing.

[0079] In some embodiments, the lead screw is drivenly connected to the first power assembly; the first component includes a first housing and a third elastic member, the nut is disposed inside the first housing and is movable relative to the first housing in the relative movement direction between the first component and the second component; the third elastic member is disposed between the nut and the inner wall surface of the first housing facing away from the first power assembly; the third elastic member has a first preload.

[0080] In some embodiments, the first component further includes a second pressure plate, which is fixedly connected to the first housing and located on the side of the nut facing the first power assembly.

[0081] In some embodiments, one of the nut and the first housing is provided with a fourth limiting boss, and the other of the nut and the first housing is provided with a fourth limiting groove; the fourth limiting boss is disposed in the fourth limiting groove and is capable of moving within the fourth limiting groove along the relative moving direction of the first component and the second component.

[0082] In some embodiments, the first component is further provided with a buffer pad, which is disposed within the first housing and located on the side of the third elastic member opposite to the nut.

[0083] In some embodiments, the rated power of the first power component is greater than or equal to the rated power of the second power component.

[0084] In some embodiments, the thrust output by the actuator in the first operating mode is less than the thrust output in the second operating mode.

[0085] In some embodiments, the total power of the actuator in the first operating mode is less than the total power in the second operating mode.

[0086] In some embodiments, in a first operating mode, the relative speed of the first component and the second component is less than or equal to 1 m / s; in a second operating mode, the relative speed of the first component and the second component is greater than 1 m / s.

[0087] In some embodiments, the actuator further includes a tower top assembly and a fork arm, the tower top assembly being connected to the first component and adapted to be connected to the vehicle body; the fork arm being connected to the second component and adapted to be connected to the wheel.

[0088] In some embodiments, the actuator further includes a lower support and a first elastic member, the lower support being connected to the second component; the first elastic member being connected between the tower top assembly and the lower support.

[0089] A second aspect of this application provides a suspension system including an actuator.

[0090] A third aspect of this application provides a vehicle that includes a suspension system.

[0091] It should be noted that the technical effects of the implementation methods of the second and third aspects can be found in the technical effects of the corresponding implementation methods in the first aspect, and will not be repeated here. Attached Figure Description

[0092] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0093] Figure 1 is a structural schematic diagram of a vehicle provided in an embodiment of this application;

[0094] Figure 2 is a schematic diagram of the actuator in the suspension system shown in Figure 1;

[0095] Figure 3 is one of the cross-sectional structural schematic diagrams of the actuator shown in Figure 2;

[0096] Figure 4 is a second cross-sectional structural schematic diagram of the actuator shown in Figure 2;

[0097] Figure 5 is a front view structural schematic diagram of the actuator shown in Figure 2;

[0098] Figure 6 is a cross-sectional structural schematic diagram of the actuator shown in Figure 5;

[0099] Figure 7 is a schematic diagram of the fit between the lead screw 72 and the nut 13;

[0100] Figure 8 is an enlarged schematic diagram of the structure at point A in Figure 4;

[0101] Figure 9 is an enlarged schematic diagram of the structure at point B in Figure 3;

[0102] Figure 10 is a schematic diagram of the structure of the first housing of the first power assembly and the clutch box of the separation and engagement switching assembly shown in Figure 3;

[0103] Figure 11 is a cross-sectional view of the first housing and clutch box shown in Figure 10;

[0104] Figure 12 is a cross-sectional view of the first power component in the actuator shown in Figure 6.

[0105] Figure 13 is a schematic diagram of the structure of the first bushing shown in Figure 9;

[0106] Figure 14 is a cross-sectional view of the first bushing shown in Figure 13;

[0107] Figure 15 is a schematic diagram of the structure of the second bushing shown in Figure 9;

[0108] Figure 16 is a cross-sectional view of the second bushing shown in Figure 15.

[0109] Figure 17 is a schematic diagram of one structure of the transmission box shown in Figure 9;

[0110] Figure 18 is a cross-sectional view of the transmission box shown in Figure 17;

[0111] Figure 19 is a schematic diagram of the fork arm shown in Figure 9;

[0112] Figure 20 is a cross-sectional view of the fork arm shown in Figure 19;

[0113] Figure 21 is a cross-sectional view of the transmission assembly in the actuator shown in Figure 6; Figure 22 is a cross-sectional view of the second power assembly shown in Figure 6.

[0114] Figure 23 is a schematic diagram of the separation and connection switching component shown in Figure 9;

[0115] Figure 24 is a cross-sectional view of the separation and connection switching assembly shown in Figure 23.

[0116] Figure 25 is a top view of the structure of the first sensor shown in Figure 9;

[0117] Figure 26 is a three-dimensional structural diagram of the first sensor shown in Figure 25;

[0118] Figure 27 is a schematic diagram of the cooperation relationship between the first sensor, the transmission box, and the first pressure plate shown in Figure 26;

[0119] Figure 28 is a structural schematic diagram of the transmission box shown in Figure 17 when it has the first protrusion;

[0120] Figure 29 is a cross-sectional view of the transmission box shown in Figure 28;

[0121] Figure 30 is a schematic diagram of the structure of the second component shown in Figure 3;

[0122] Figure 31 is a cross-sectional view of the second component shown in Figure 30;

[0123] Figure 32 is an enlarged schematic diagram of the structure at point C in Figure 3;

[0124] Figure 33 is a structural schematic diagram of the second component shown in Figure 30 from another perspective;

[0125] Figure 34 is a schematic diagram of the structure when the second component shown in Figure 33 is placed at an angle;

[0126] Figure 35 is a structural schematic diagram of the first component shown in Figure 3;

[0127] Figure 36 is a cross-sectional view of the second component shown in Figure 33;

[0128] Figure 37 is a structural schematic diagram of the first component shown in Figure 35 when it is equipped with ball bearings;

[0129] Figure 38 is a cross-sectional view of the first component shown in Figure 37;

[0130] Figure 39 is a structural schematic diagram of the first component shown in Figure 35 when it is equipped with an oil inlet and an oil nozzle;

[0131] Figure 40 is a schematic diagram of the lead screw in the actuator shown in Figure 3;

[0132] Figure 41 is an enlarged schematic diagram of the structure at point D in Figure 40;

[0133] Figure 42 is a schematic diagram of the structure of the first housing of the first power assembly shown in Figure 9 when it is provided with a connecting oil hole and an oil outlet.

[0134] Figure 43 is a schematic diagram of the structure of the first sealing gasket in the actuator shown in Figure 3;

[0135] Figure 44 is a schematic diagram of the structure of the second sealing gasket in the actuator shown in Figure 3;

[0136] Figure 45 is a schematic diagram of the structure of the third sealing gasket in the actuator shown in Figure 3;

[0137] Figure 46 is a schematic diagram of another mating relationship between the nut and the first housing provided in an embodiment of this application;

[0138] Figure 47 is a schematic diagram of the fit between the nut and the first housing when the third elastic element shown in Figure 46 undergoes elastic deformation;

[0139] Figure 48 is a schematic diagram of the nut structure shown in Figure 46;

[0140] Figure 49 is a structural schematic diagram of another actuator provided in an embodiment of this application;

[0141] Figure 50 is a cross-sectional structural schematic diagram of the actuator shown in Figure 49;

[0142] Figure 51 is a schematic cross-sectional view of another actuator shown in Figure 49;

[0143] Figure 52 is a schematic diagram of the arrangement of the first power component, the second power component, the separation and engagement switching component, and the transmission component in the actuator shown in Figure 49.

[0144] Figure 53 is an enlarged schematic diagram of the structure at point E in Figure 51;

[0145] Figure 54 is a schematic diagram of another actuator provided in an embodiment of this application;

[0146] Figure 55 is a cross-sectional structural schematic diagram of the actuator shown in Figure 54;

[0147] Figure 56 is a schematic cross-sectional view of another actuator shown in Figure 54.

[0148] Figure 57 is a schematic diagram of the arrangement of the first power component, the second power component, the separation and engagement switching component, and the transmission component in the actuator shown in Figure 54.

[0149] Figure 58 is an enlarged schematic diagram of the structure at point F in Figure 56;

[0150] Figure 59 is a schematic diagram of another actuator provided in an embodiment of this application;

[0151] Figure 60 is a cross-sectional structural schematic diagram of the actuator shown in Figure 59;

[0152] Figure 61 is a schematic cross-sectional view of another actuator shown in Figure 59;

[0153] Figure 62 is a schematic diagram of the arrangement of the first power component, the second power component, the separation and engagement switching component, and the transmission component in the actuator shown in Figure 59.

[0154] Figure 63 is an enlarged schematic diagram of the structure at point G in Figure 61.

[0155] Reference numerals: 1000, vehicle; 100, suspension system; 200, wheel; 300, body; 10, actuator; 1, first component; 11, first housing; 111, third protrusion; 1111, sliding plane; 1112, ball bearing; 112, oil inlet; 113, oil inlet nozzle; 13, nut; 131, nut body; 132, flange structure; 133, fourth limiting boss; 14, second pressure plate; 15, third elastic element; 16, buffer pad; 2, second component; 21, mounting hole; 22, second housing; 221, sealing groove; 222, sealing element; 223, rib; 23, first sliding assembly; 24, first limiting boss; 25, second limiting boss; 26, second sliding assembly; 261, sliding element; 27, third limiting boss; 28, second limiting groove; 3. Tower top assembly; 31. Fixing base; 32. Upper support; 4. Fork arm; 41. Third mounting slot; 42. Fourth mounting slot; 5. First elastic element; 6. Lower support; 7. First power assembly; 72. Lead screw; 721. Threaded section; 7211. Oil guide groove; 722. First transmission section; 73. First housing; 731. First receiving cavity; 732. First through hole; 733. First mounting slot; 734. First top plate; 735. First surrounding plate; 736. First wire hole; 737. Second protrusion; 738. Connecting oil hole; 739. First oil outlet; 73A. First oil nozzle; 74. First stator; 75. First mover; 76. Bushing assembly; 761. First bushing; 7611. First sleeve portion; 7612. First flange portion; 762. Second bushing; 7621. Second sleeve portion; 7622. Second flange portion; 763. Second positioning groove; 77. First bearing; 78. Second bearing; 79. First output shaft; 8. Second power assembly; 81. Second housing; 811. Fourth receiving cavity; 82. Second stator; 83. Second mover; 84. Second output shaft; 9. Separation and engagement switching assembly; 91. Clutch box; 911. Third receiving cavity; 912. Fourth through hole; 913. Second wiring hole; 92. Separation and engagement switching assembly body; 921, first rotating part; 9211, first support member; 9211B, first support portion; 9211C, second support portion; 9212, friction plate; 922, second rotating part; 9221, clutch member; 9222, guide seat; 9222B, limiting hole; 9223, second elastic member; 93, driving member; 931, driving coil; 932, second support member; 1A, transmission assembly; 11A, transmission box; 111A, second mounting groove; 1111A, first groove; 1112A, second groove; 112A, second through hole; 113A, third bearing; 114A, second top plate; 115A, second surrounding plate; 116A, second receiving cavity; 117A, fourth bearing; 118A, third through hole; 119A, fifth bearing; 110A, fifth mounting groove;120A, First protrusion; 1201A, Clearance notch; 130A, First rotary seal; 140A, Second rotary seal; 150A, Second oil outlet; 160A, Second oil nozzle; 12A, Transmission component; 121A, First gear; 122A, Second gear; 123A, Third gear; 124A, Second rotating shaft; 125A, Fourth gear; 126A, Fifth gear; 127A, Sixth gear; 128A, Seventh gear; 129A, Eighth gear; 1210A, Ninth gear; 1211A, Tenth gear; 1212A, First bevel gear; 1213A, Second bevel gear; 1214A, Third bevel gear; 1B, First sensor; 11B, Third stator; 12B, Third mover; 13B, First pressure plate; 14B, First cable outlet box; 141B, First wire harness; 121B, Second positioning protrusion; 1C, Second sensor; 10A, First sealing gasket; 10B, Second sealing gasket; 10C, Third sealing gasket; 101A, First clearance hole; 101B, Second clearance hole; 102B, Third clearance hole. Detailed Implementation

[0156] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0157] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0158] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0159] This application provides a vehicle. The vehicle can be a pure electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, a range-extended electric vehicle, a gasoline-powered vehicle, etc. The vehicle can also be a sedan, a truck, a bus, a lorry, a trailer, etc. This application does not specifically limit the type of vehicle.

[0160] Please refer to Figure 1, which is a structural schematic diagram of a vehicle provided in an embodiment of this application. The vehicle 1000 includes a suspension system 100, wheels 200, and a body 300. The wheels 200 are located on the underside of the body 300, and the suspension system 100 is located between the wheels 200 and the body 300 to buffer the impact force transmitted to the body 300 from uneven road surfaces, thereby ensuring the smoothness of the vehicle 1000's ride and improving the driving comfort of the vehicle 1000.

[0161] In some embodiments, the suspension system 100 includes an actuator 10 and a connector. One end of the actuator 10 is connected to the vehicle body 300, and the other end of the actuator 10 can be connected to the wheel 200 via the connector. Exemplarily, the connector can be a connecting arm, steering knuckle, etc., and this application does not specifically limit it.

[0162] In some other embodiments, the actuator 10 may also be directly connected to the wheel 200.

[0163] Please refer to Figures 2, 3, and 4. Figure 2 is a structural schematic diagram of the actuator 10 in the suspension system 100 shown in Figure 1. Figure 3 is one of the cross-sectional structural schematic diagrams of the actuator 10 shown in Figure 2. Figure 4 is another cross-sectional structural schematic diagram of the actuator 10 shown in Figure 2. The actuator 10 includes a first component 1 and a second component 2 that are movable relative to each other. One of the first component 1 and the second component 2 is connected to the vehicle body 300, and the other of the first component 1 and the second component 2 is connected to the wheel 200.

[0164] In other words, if the first component 1 is connected to the body 300, then the second component 2 is connected to the wheel 200. Alternatively, if the first component 1 is connected to the wheel 200, then the second component 2 is connected to the body 300.

[0165] By moving the first component 1 and the second component 2 relative to each other, the vehicle body 300 and the wheels 200 can be moved relative to each other to adjust the distance between the vehicle body 300 and the wheels 200. In this way, when the vehicle 1000 is in motion and is affected by road bumps, the actuator 10 can adjust the distance between the vehicle body 300 and the wheels 200 to ensure the stability of the vehicle body 300 and improve the driving experience of the vehicle 1000.

[0166] This application uses the example of the first component 1 being connected to the vehicle body 300 and the second component 2 being connected to the wheel 200 for illustrative purposes.

[0167] In some embodiments, the actuator 10 further includes a tower top assembly 3 and a fork arm 4. The tower top assembly 3 is connected between the first component 1 and the vehicle body 300 to achieve connection between the first component 1 and the vehicle body 300. Exemplarily, the tower top assembly 3 and the first component 1 can be connected by snap-fit, screw-fit, welding, or other methods. The tower top assembly 3 and the vehicle body 300 can also be connected by snap-fit, screw-fit, welding, or other methods.

[0168] The fork arm 4 connects the second component 2 and the wheel 200, so that the second component 2 is connected to the wheel 200 via the fork arm 4. In some examples, the fork arm 4 and the second component 2 can be directly connected or indirectly connected.

[0169] In some examples, the second component 2 is provided with a mounting hole 21, and the first component 1 passes through the mounting hole 21 and is movable within the mounting hole 21. The direction of relative movement between the first component 1 and the second component 2 is consistent with the axial direction of the mounting hole 21.

[0170] In some examples, the first component 1 can be a cylindrical structure. The first component 1 can also be a plate-like structure, a rod-like structure, a block-like structure, etc.

[0171] In some examples, the second component 2 can be a cylindrical structure. The second component 2 can also be a plate-like structure, a rod-like structure, a block-like structure, etc.

[0172] In some embodiments, the actuator 10 further includes a first elastic member 5 and a lower support member 6. The lower support member 6 is connected to the second component 2, and the first elastic member 5 is connected between the tower top assembly 3 and the lower support member 6. The first elastic member 5 is used to buffer the transmission of force between the wheel 200 and the vehicle body 300.

[0173] In some examples, the first elastic element 5 can be a spring, such as a coil spring or an air spring. The coil spring can be a cylindrical coil spring, which is sleeved around the first component 1 and the second component 2.

[0174] In other embodiments, the first elastic element 5 may also be a tower spring, disc spring, rubber column, rubber cylinder, etc. This application uses a cylindrical helical spring as an example to illustrate the first elastic element 5, which should not be considered as a special limitation on this application.

[0175] In some examples, referring to Figure 3, the tower top assembly 3 includes a mounting base 31 and an upper support member 32. The mounting base 31 connects the first component 1 to the vehicle body 300. The upper support member 32 is located on the side of the mounting base 31 facing the fork arm 4. A first elastic member 5 is located between the upper support member 32 and the lower support member 6.

[0176] The upper support member 32 can be arranged around the first component 1. The lower support member 6 can be arranged around the second component 2. For example, the upper support member 32 can be a plate-like structure, a rod-like structure, or an irregular structure, etc. The lower support member 6 can be a plate-like structure, a rod-like structure, or an irregular structure, etc.

[0177] In some embodiments, the actuator further includes a dust cover. The dust cover is disposed inside the first elastic member and between the tower top assembly 3 and the second component 2, and is used to isolate the actuator from external impurities.

[0178] In this way, the dust cover can be set inside the first elastic member, and the tower top assembly 3 and the second component 2 are used to isolate water, dust and other impurities from the outside of the device, so as to prevent water, dust and other impurities from the outside from entering the actuator and affecting the normal operation of the actuator.

[0179] It should be noted that the dust cover can extend and retract as the first component 1 and the second component 2 move relative to each other. For example, the dust cover has a corrugated structure.

[0180] In some embodiments, as shown in FIG5, FIG5 is a front view schematic diagram of the actuator shown in FIG2. The maximum length L1 of the actuator 10 in the first direction satisfies L1≤1000mm. For example, L1 can be 1000mm, 950mm, 900mm, 850mm, 800mm, 750mm, 700mm, 650mm, 600mm, 500mm, etc. Here, the first direction is the direction of relative movement between the first component 1 and the second component 2, for example, the first direction is the height direction of the vehicle.

[0181] The maximum width dimension L2 of the actuator in the second direction satisfies L2 ≤ 200mm. For example, L2 can be 200mm, 180mm, 150mm, 120mm, 100mm, 80mm, etc. The second direction is perpendicular to the first direction; for example, the second direction can be the width direction or the length direction of the vehicle.

[0182] By setting the maximum length and maximum width of the actuator 10 within the aforementioned range, the space between the vehicle body and the wheels can be utilized effectively to avoid interference between the actuator 10 and other components, which would affect the normal performance of the actuator 10.

[0183] In some embodiments, please refer to FIG6, which is a cross-sectional structural schematic diagram of the actuator shown in FIG5. When the first component 1 is located at a certain position relative to the second component 2, the stroke of the first component 1 relative to the second component 2 when it moves to the tensile limit (i.e., the actuator length is the longest at this time) is the first stroke L7, and the stroke of the first component 1 relative to the second component 2 when it moves to the compression limit (i.e., the actuator length is the shortest at this time) is the second stroke L8. The sum of L7 and L8 is the system stroke L9 of the actuator, that is, L9 = L7 + L8.

[0184] Wherein, L9 satisfies: L9≤300mm. For example, L9 can be 300mm, 280mm, 250mm, 220mm, 200mm, 180mm, 150mm, 120mm, 100mm, 95mm, 90mm, 85mm, 80mm, etc.

[0185] By satisfying the above range with L9, the need for the actuator to adjust the distance between the vehicle body and the wheels can be guaranteed, and the space occupied by the actuator in the first direction can also be avoided.

[0186] In some embodiments, the difference between L7 and L8 should not be too large. Specifically, the ratio of the absolute value of the difference between L7 and L8 to L9 is less than or equal to 20%. For example, the ratio of the absolute value of the difference between L7 and L8 to L9 can be 20%, 18%, 15%, 12%, 10%, 8%, etc.

[0187] In this way, the first component 1 and the second component 2 can have a suitable stroke whether they move towards each other or away from each other.

[0188] In some embodiments, the relative moving speed of the first component 1 and the second component 2 is less than or equal to 2 m / s. For example, the relative moving speed of the first component 1 and the second component 2 can be 2 m / s, 1.8 m / s, 1.5 m / s, 1.2 m / s, 1 m / s, 0.8 m / s, 0.5 m / s, etc.

[0189] By keeping the relative movement speed of the first component 1 and the second component 2 within the aforementioned range, the relative movement of the first component 1 and the second component 2 can be made relatively smooth, thereby making the adjustment between the vehicle body and the wheels relatively smooth.

[0190] In some embodiments, please continue to refer to FIG3, the actuator 10 further includes a first power component 7 and a second power component 8.

[0191] For example, the first power component 7 can be a rotary motor, a linear motor, or other structures that can drive the first component 1 and the second component 2 to move relative to each other.

[0192] For example, the second power component 8 can be a rotary motor, a linear motor, or other structures capable of driving the first component 1 and the second component 2 to move relative to each other.

[0193] This application uses the first power assembly 7 as the first rotary motor and the second power assembly 8 as the second rotary motor as an example for illustration.

[0194] The actuator 10 has a first operating mode and a second operating mode. In the first operating mode, the first power assembly 7 drives the first component 1 and the second component 2 to move relative to each other. In the second operating mode, at least the second power assembly 8 drives the first component 1 and the second component 2 to move relative to each other; that is, in the second operating mode, the first power assembly 7 and the second power assembly 8 can jointly drive the first component 1 and the second component 2 to move relative to each other, or only the second power assembly 8 can drive the first component 1 and the second component 2 to move relative to each other.

[0195] Specifically, in the second operating mode of the actuator, the participation of the first power component 7 in driving can be determined based on road conditions and the rated power of the second power component 8. When the rated power of the second power component 8 is designed to be relatively large, simultaneously meeting the needs of the vehicle under both normal and extreme operating conditions, in the second operating mode, only the second power component 8 can drive the relative movement of the first component 1 and the second component 2. When the rated power of the second power component 8 can meet the needs of the vehicle under normal operating conditions but is insufficient to meet the needs of the vehicle under extreme operating conditions, in the second operating mode, the first power component 7 and the second power component 8 can jointly drive the relative movement of the first component 1 and the second component 2. Normal operating conditions refer to the vehicle traveling on roads with relatively good conditions, such as urban roads, where the vehicle's suspension experiences less road excitation; extreme operating conditions refer to the vehicle traveling on roads with relatively poor conditions, such as mountain roads, where the vehicle's suspension experiences greater road excitation.

[0196] The actuator 10 provided in this embodiment includes a first power component 7 and a second power component 8. Compared with an actuator that only includes a single drive component, the actuator 10 in this embodiment is driven only by the first power component 7 in the first working mode to realize the relative movement of the first component 1 and the second component 2. Thus, when designing the first power component 7, its rated power does not need to meet the needs of the vehicle under all working conditions, but only needs to meet the needs of the vehicle under normal working conditions. The first power component 7 has a smaller rated power, lighter weight, and smaller moment of inertia, making it easier to control. This improves the vehicle's handling under normal working conditions.

[0197] In some embodiments, in the second operating mode, both the first power component 7 and the second power component 8 drive the first component 1 and the second component 2 to move relative to each other.

[0198] In this way, the actuator 10 can select to adopt the first working mode or the second working mode according to the actual operating conditions. This allows the second power component 8 to selectively work or not work depending on the operating conditions. That is to say, during the operation of the actuator 10, the second power component 8 is not always in working state. In the first working mode, the second power component 8 does not participate in the operation. In the second working mode, the first power component 7 and the second power component 8 work simultaneously. That is, the first power component 7 and the second power component 8 only need to meet the limit power requirement of the second working mode. Thus, the first power component 7 does not need to meet the limit power requirement of the second working mode, and the second power component 8 does not need to meet the limit power requirement of the second working mode.

[0199] In this way, compared with using a single motor drive to meet the full working conditions of the actuator 10, the large moment of inertia of the drive component during medium and high frequency reciprocating motion of the actuator 10 can be avoided, which would affect the responsiveness of the suspension system 100, thereby improving the response speed of the suspension system 100 and improving the motion control effect of the whole vehicle.

[0200] Specifically, when actuator 10 is used in the suspension system 100 of vehicle 1000, the vehicle 1000 will encounter various operating conditions during operation, such as common conditions like undulating roads, turning, and tilting, as well as extreme conditions like jumping over steps and potholes. Therefore, actuator 10 needs to meet the requirements of all operating conditions (i.e., all operating conditions) of vehicle 1000. Among these, common operating conditions typically account for about 85% of all operating conditions, while extreme operating conditions typically account for about 15%.

[0201] In related technologies, the suspension system 100 is driven by a rotary motor. In order to meet the performance requirements under extreme conditions, the difference between the rated parameters and peak parameters of the motor is often relatively large, resulting in a large motor size (rotor diameter) and weight (especially rotor weight). During the medium- and high-frequency reciprocating motion of the suspension system 100, the large moment of inertia of the motor will directly affect the responsiveness of the suspension system 100, and thus affect the motion control effect of the entire vehicle.

[0202] This application, by setting a first power component 7 and a second power component 8, allows the actuator 10 to operate in a first mode that corresponds to the common operating conditions of the vehicle 1000, and in a second mode that corresponds to the extreme operating conditions of the vehicle 1000. When the actuator 10 is in the first operating mode, only the first power component 7 can output driving force, while the second power component 8 does not output driving force. Thus, when the first power component 7 acts as the first rotary motor, since it does not need to output excessive thrust, it does not need to meet the performance requirements of extreme operating conditions. Therefore, the difference between the rated parameters and peak parameters of the first power component 7 does not need to be set too large, thereby reducing the volume (rotor diameter) and weight (especially rotor weight) of the first power component 7.

[0203] Furthermore, when the actuator 10 is in the second operating mode, the first power component 7 and the second power component 8 can jointly output driving force. In this way, when the second power component 8 acts as the second rotating motor, since the thrust output by the first power component 7 and the second power component 8 is sufficient to meet the extreme operating condition requirements, the second power component 8 itself does not need to meet the extreme operating condition performance requirements. Therefore, the difference between the rated parameters and the peak parameters of the second power component 8 does not need to be set too large, thereby reducing the volume (rotor diameter) and weight (especially the rotor weight) of the second power component 8.

[0204] In this way, the volume (rotor diameter) and weight (especially rotor weight) of the first power assembly 7 and the second power assembly 8 are reduced. During the medium and high frequency reciprocating motion of the suspension system 100, the moment of inertia of the first power assembly 7 and the second power assembly 8 are also reduced, thus having a smaller impact on the responsiveness of the suspension system 100. This can improve the response speed of the suspension system 100 and improve the motion control effect of the whole vehicle.

[0205] In some embodiments, in order to make the actuator 10 respond more promptly, the first power component 7 may be a permanent magnet synchronous motor.

[0206] In some embodiments, the second power component 8 can be an asynchronous motor. That is, the second power component 8 can function as both a drive motor and a generator. Furthermore, as a generator, the power output of the second motor can be adjusted by controlling the magnetic field strength of the second power component 8 through an external power source.

[0207] In some embodiments, in the first operating mode, the relative movement speed of the first component 1 and the second component 2 is less than or equal to 1 m / s. For example, the relative movement speed of the first component 1 and the second component 2 can be 1 m / s, 0.8 m / s, 0.6 m / s, 0.4 m / s, 0.2 m / s, etc.

[0208] In the second operating mode, the relative movement speed of the first component 1 and the second component 2 is greater than 1 m / s. For example, the relative movement speed of the first component 1 and the second component 2 can be 1.2 m / s, 1.5 m / s, 1.6 m / s, 1.8 m / s, 2 m / s, etc. It should be noted that under common operating conditions, when vehicle sway is small, a relative movement speed of less than or equal to 1 m / s is sufficient to quickly adjust the distance between the vehicle body and the wheels to ensure vehicle stability. Under extreme operating conditions, when vehicle sway is large, the relative movement speed of the first component 1 and the second component 2 needs to be greater than 1 m / s to quickly adjust the distance between the vehicle body and the wheels to ensure vehicle stability.

[0209] In some embodiments, the thrust output by the actuator 10 in the first operating mode is less than the thrust output in the second operating mode. The thrust output by the actuator 10 refers to the force by which the actuator 10 pushes the vehicle body and wheels to move relative to each other, thereby adjusting the distance between the vehicle body and the wheels.

[0210] In some embodiments, the first power component 7 is a first rotary motor. The rated speed of the first power component 7 is greater than or equal to 3000 rpm and less than or equal to 12000 rpm. For example, the rated speed of the first power component 7 can be 3000 rpm, 4000 rpm, 5000 rpm, 6000 rpm, 7000 rpm, 8000 rpm, 9000 rpm, 10000 rpm, 11000 rpm, 12000 rpm, etc.

[0211] By setting the rated speed of the first power component 7 within the above range, the first power component 7 can be made to drive the first component 1 and the second component 2 to move relative to each other, and the rotational inertia of the first power component 7 can be made smaller, thereby improving the response speed of the first power component 7 and facilitating the control of the first power component 7.

[0212] In some embodiments, the rated torque of the first power component 7 is greater than or equal to 4 N·m and less than or equal to 32 N·m. For example, the rated torque of the first power component 7 can be 4 N·m, 10 N·m, 15 N·m, 20 N·m, 25 N·m, 30 N·m, 32 N·m, etc.

[0213] By setting the rated torque of the first power component 7 within the above-mentioned range, the first power component 7 can be made to drive the first component 1 and the second component 2 to move relative to each other, and the rotational inertia of the first power component 7 can be made smaller, thereby improving the response speed of the first power component 7 and facilitating the control of the first power component 7.

[0214] In some embodiments, the total operating power of the actuator 10 in the first operating mode is less than the total operating power in the second operating mode. The total operating power output by the actuator 10 in the first operating mode refers to the operating power output by the first power component 7 in the first operating mode, and the total power of the actuator 10 in the second operating mode refers to the sum of the operating power outputs of the first power component 7 and the second power component 8 in the second operating mode.

[0215] In some embodiments, the rated power of the first power component 7 is less than or equal to 3.5KW. For example, the rated power of the first power component 7 can be 3.5KW, 3.2KW, 3KW, 2.8KW, 2.5KW, 2.2KW, 2KW, 1.8KW, 1.5KW, 1KW, etc.

[0216] The rated power of the second power component 8 is greater than or equal to 2.5KW. For example, the rated power of the second power component 8 can be 2.5KW, 3KW, 3.5KW, 4KW, 4.5KW, 5KW, 5.5KW, 6KW, etc.

[0217] The sum of the power outputs of the first power component 7 and the second power component 8 can be greater than or equal to 6KW. For example, the sum of the power outputs of the first power component 7 and the second power component 8 can be 6KW, 6.3KW, 6.5KW, 7KW, 7.5KW, 8KW, 8.5KW, 9KW, etc.

[0218] By setting the rated power of the first power assembly 7 and the second power assembly 8 within the above-mentioned range, the actuator 10 can ensure the speed at which the first component 1 and the second component 2 are moved relative to each other through the first power assembly 7 in the first working mode, and ensure the thrust on the vehicle body when the first component 1 and the second component 2 are moved relative to each other, so as to ensure the stability of the vehicle body.

[0219] Furthermore, in the second operating mode, the relative movement speed of the first component 1 and the second component 2 can be guaranteed, as well as the thrust on the vehicle body when the first power component 7 and the second power component 8 are moving relative to each other, so as to ensure the stability of the vehicle body, whether the first power component 7 and the second power component 8 are working simultaneously or the second power component 8 is working alone.

[0220] In some embodiments, referring to FIG3, the actuator 10 further includes a disengagement / engagement switching component 9. The disengagement / engagement switching component 9 may be an electromagnetic disengagement / engagement switching component 9, a hydraulic disengagement / engagement switching component 9, or a jaw-type disengagement / engagement switching component 9. This application does not specifically limit its application in this regard.

[0221] The separation / engagement switching assembly 9 is disposed between the first power assembly 7 and the second power assembly 8. In the first operating mode, the separation / engagement switching assembly 9 separates the first power assembly 7 and the second power assembly 8, and the first power assembly 7 outputs driving force to drive the first component 1 and the second component 2 to move relative to each other. In the second operating mode, the separation / engagement switching assembly 9 couples the first power assembly 7 and the second power assembly 8, and both the first power assembly 7 and the second power assembly 8 output driving force to drive the first component 1 and the second component 2 to move relative to each other.

[0222] In other words, the separation / engagement switching component 9 has a disconnected state and a coupled state. When the actuator 10 is in the first operating mode, the separation / engagement switching component 9 is in the disconnected state, at which time the separation / engagement switching component 9 disconnects the first power component 7 and the second power component 8. When the actuator 10 is in the second operating mode, the separation / engagement switching component 9 is in the coupled state, at which time the separation / engagement switching component 9 couples the first power component 7 and the second power component 8.

[0223] The separation and engagement switching component 9 facilitates the coupling or disconnection of the second power component 8 with the first power component 7, thereby enabling the actuator 10 to switch between the first and second operating modes. Furthermore, when the first power component 7 is operating, the separation and engagement switching component 9 is in an open state, preventing the second power component 8 from interfering with its operation and reducing the load on the first power component 7, thus minimizing energy waste.

[0224] In some examples, the first power assembly 7 can be drivenly connected to the first component 1; in a first operating mode, the first power assembly 7 outputs driving force to the first component 1 to drive the first component 1 and the second component 2 to move relative to each other. In a second operating mode, the first power assembly 7 and the second power assembly 8 output driving force to the first component 1 to drive the first component 1 and the second component 2 to move relative to each other.

[0225] In other words, the output of the first power component 7 can be directly connected to the first component 1, thereby directly driving the first component 1 to move relative to the second component 2. For example, the first power component 7 can be a linear motor. Furthermore, in the second operating mode, the second power component 8 can transmit driving force to the output of the first power component 7 through the disengagement / engagement switching component 9, thereby driving the first component 1 to move relative to the second component 2. For example, the second power component 8 can also be a linear motor.

[0226] In some other examples, the first power component 7 may also be indirectly connected to the first component 1.

[0227] For example, both the first power component 7 and the second power component 8 are rotary drive components. Exemplarily, both the first power component and the second power component can be rotary motors.

[0228] At this point, it is necessary to convert the rotational motion output by the first power component 7 and the second power component 8 into linear motion in order to achieve the relative movement of the first component 1 and the second component 2.

[0229] Specifically, the actuator also includes a motion conversion component. The motion conversion component is adapted to convert the rotational motion output by the first power component 7 in the first operating mode, and the rotational motion output by the first power component 7 and the second power component 8 in the second operating mode, into relative linear movement between the first component 1 and the second component 2.

[0230] In some examples, the motion conversion assembly includes a lead screw 72 and a nut 13 connected to the lead screw 72. In a first operating mode, a first power assembly 7 outputs power to one of the lead screw 72 and the nut 13. In a second operating mode, a first power assembly 7 and a second power assembly 8 output power to one of the lead screw 72 and the nut 13. The other of the lead screw 72 and the nut 13 is connected to one of the first component 1 and the second component 2 to drive one of the first component 1 and the second component 2 to move linearly relative to the other of the first component 1 and the second component 2.

[0231] For example, the lead screw 72 is connected to the first power assembly 7, the nut 13 is fixed relative to the first component 1, and the second component 2 is fixed relative to the first power assembly 7. Thus, in the first operating mode, the first power assembly 7 outputs driving force to the lead screw 72, and in the second operating mode, the first power assembly 7 and the second power assembly 8 jointly output driving force to the lead screw 72. Through the cooperation between the lead screw 72 and the nut 13, the rotational motion of the lead screw 72 is converted into the linear motion of the nut 13, thereby driving the first component 1 to move linearly relative to the second component 2.

[0232] For example, the lead screw 72 is connected to the first power assembly 7, the nut 13 is fixed relative to the second component 2, and the first component 1 is fixed relative to the first power assembly 7. In the first operating mode, the first power assembly 7 outputs driving force to the lead screw 72, and in the second operating mode, the first power assembly 7 and the second power assembly 8 jointly output driving force to the lead screw 72. Through the cooperation between the lead screw 72 and the nut 13, the rotational motion of the lead screw 72 is converted into the linear motion of the nut 13, thereby driving the first component 1 to move linearly relative to the second component 2.

[0233] For example, nut 13 is connected to the first power assembly 7, lead screw 72 is fixed relative to the first component 1, and second component 2 is fixed relative to the first power assembly 7. Thus, in the first operating mode, the first power assembly 7 outputs driving force to the lead screw nut 13, and in the second operating mode, the first power assembly 7 and the second power assembly 8 jointly output driving force to the nut 13. Through the cooperation between the lead screw 72 and the nut 13, the rotational motion of the nut 13 is converted into the linear motion of the lead screw 72, thereby driving the first component 1 to move linearly relative to the second component 2.

[0234] For example, nut 13 is connected to the first power assembly 7, lead screw 72 is fixed relative to the second component 2, and the first component 1 is fixed relative to the first power assembly 7. Thus, in the first operating mode, the first power assembly 7 outputs driving force to the lead screw nut 13, and in the second operating mode, the first power assembly 7 and the second power assembly 8 jointly output driving force to the nut 13. Through the cooperation between the lead screw 72 and the nut 13, the rotational motion of the nut 13 is converted into the linear motion of the lead screw 72, thereby driving the first component 1 to move linearly relative to the second component 2.

[0235] The axial direction of the lead screw 72 is consistent with the direction of movement of the first component 1 relative to the second component 2.

[0236] For example, the nut 13 has a first thread, and the lead screw 72 has a second thread that matches the first thread. The first thread and the second thread cooperate to convert the rotational motion of the lead screw 72 into the linear motion of the nut 13.

[0237] As another example, the nut 13 has a spiral boss inside, and the lead screw 72 has a spiral groove that matches the boss. The boss and the groove cooperate to convert the rotational motion of the lead screw 72 into the linear motion of the nut 13.

[0238] For example, lead screw 72 is a ball screw, or nut 13 is a ball nut. In this way, when lead screw 72 and nut 13 move relative to each other, the friction between lead screw 72 and nut 13 is rolling friction, which makes the relative movement between lead screw 72 and nut 13 smoother.

[0239] In some embodiments, please refer to Figure 7, which is a schematic diagram of the fit between the lead screw 72 and the nut 13. The diameter d1 of the lead screw 72 satisfies: 10mm ≤ d1 ≤ 40mm. For example, the diameter d1 of the lead screw 72 can be 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, etc.

[0240] By setting the diameter d1 of the lead screw 72 within the above range, the structural strength of the lead screw 72 can be guaranteed, the rotational inertia requirement of the lead screw 72 can be guaranteed, and the volume of the lead screw 72 can be avoided from being too large and occupying too much space.

[0241] In some embodiments, the length L4 of the lead screw 72 satisfies: L4≤550mm. For example, L4 can be 550mm, 520mm, 500mm, 480mm, 450mm, 420mm, 400mm, 380mm, 350mm, etc.

[0242] By setting the length L4 of the lead screw 72 within the above range, the lead screw 72 can meet the relative displacement requirements of the first component 1 and the second component 2, and can avoid the lead screw 72 being too long and occupying too much space in the axial direction.

[0243] In some embodiments, please continue to refer to Figure 7, the outer diameter d2 of the nut 13 satisfies: d2≤120mm. For example, the outer diameter d2 of the nut 13 can be 120mm, 115mm, 110mm, 105mm, 100mm, 95mm, 90mm, 85mm, 80mm, 75mm, 70mm, etc.

[0244] By setting the outer diameter d2 of the nut 13 within the above range, the structural strength of the nut 13 can be guaranteed, the rotational inertia requirement of the nut 13 can be guaranteed, and the volume of the nut 13 can be avoided from being too large and occupying too much space.

[0245] In some embodiments, the lead of the lead screw 72 is greater than or equal to 10 mm and less than or equal to 40 mm. For example, the lead of the lead screw 72 can be 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, etc. It should be noted that the lead of the lead screw 72 refers to the distance the nut 13 moves axially relative to the lead screw 72 when the lead screw 72 rotates one revolution.

[0246] In some examples, please refer to Figure 8, which is an enlarged schematic diagram of the structure at point A in Figure 4. The nut 13 includes a nut body 131 and a flange structure 132. The nut body 131 mates with the lead screw 72. The flange structure 132 is arranged around the nut body 131 and is located on the side of the first component 1 facing away from the tower top assembly 3. The flange structure 132 is fixedly connected to the first component 1, for example, by fasteners such as screws, bolts, and rivets. In other examples, the nut 13 and the first component 1 can also be connected by interference fit, snap-fit, or other methods.

[0247] In some examples, the first component 1 includes a first housing 11, a nut body 131 disposed inside the first housing 11, and a flange structure 132 located on the side of the first housing 11 opposite to the tower top assembly 3 and fixedly connected to the first housing 11.

[0248] In some embodiments, please continue to refer to Figure 7, the outer diameter d5 of the nut body 131 satisfies d5≤80mm. For example, d5 can be 80mm, 75mm, 70mm, 65mm, 60mm, 55mm, 50mm, etc.

[0249] In some embodiments, the axial length L5 of the nut body 131 satisfies: L5 ≤ 180 mm. For example, L5 can be 180 mm, 175 mm, 170 mm, 165 mm, 160 mm, 155 mm, 150 mm, 145 mm, 140 mm, 135 mm, 130 mm, 125 mm, 120 mm, etc.

[0250] By setting the outer diameter d5 and the axial length L5 of the nut body 131 within the above range, the movement of the nut 13 and the lead screw 72 can be satisfied, and the nut body 131 can avoid occupying a large space.

[0251] In some embodiments, the outer diameter d6 of the flange structure 132 satisfies: d6 ≤ 120 mm. For example, the outer diameter d6 of the flange structure 132 can be 120 mm, 115 mm, 110 mm, 105 mm, 100 mm, 95 mm, 90 mm, 85 mm, 80 mm, 75 mm, 70 mm, etc. Wherein d6 is the outer diameter d2 of the nut 13.

[0252] In some embodiments, the actuator 10 further includes a transmission assembly 1A. The transmission assembly 1A is disposed between the first power assembly 7 and the second power assembly 8, and the disengagement / engagement switching assembly 9 is disposed between the transmission assembly 1A and the second power assembly 8.

[0253] In this way, when the actuator 10 is in the second working mode, the separation and engagement switching component 9 is in the disconnected state, the second power component 8 and the transmission component 1A are in the disconnected state, the second power component 8 cannot output driving force to the transmission component 1A, and therefore cannot output driving force to the first component 1. It can only output driving force to the first component 1 through the first power component 7.

[0254] When the actuator 10 is in the second working mode, the separation and engagement switching component 9 is in a coupled state, the second power component 8 is coupled to the transmission component 1A, and the driving force output by the second power component 8 can be transmitted to the lead screw 72 through the separation and engagement switching component 9 and the transmission component 1A to output driving force to the first component 1. At this time, the first power component 7 and the second power component 8 simultaneously output driving force to the first component 1.

[0255] By setting the transmission component 1A, the driving force output by the second power component 8 can be transmitted to the first component 1, and the flexible arrangement of the separation and engagement switching component 9, the second power component 8 and the first power component 7 can be facilitated.

[0256] In some other embodiments, the separation and engagement switching component 9 may also be directly connected to the lead screw 72, i.e., the transmission component 1A is not provided.

[0257] This application is illustrated by way of connecting a lead screw 72 to a first power assembly 7, fixing a second component 2 to the first power assembly 7, fixing a nut 13 to the first component 1, and providing a transmission assembly 1A between the first power assembly 7 and the second power assembly 8.

[0258] Specifically, when the actuator 10 is in the first operating mode, the disengagement / engagement switching component 9 is in an off state, and the second power component 8 is disconnected from the transmission component 1A, thus preventing it from outputting driving force to the lead screw 72. At this time, the first power component 7 operates, driving the lead screw 72 to rotate. Since the nut 13 is threadedly engaged with the lead screw 72 and is fixed to the first component 1, the rotation of the lead screw 72 can drive the nut 13 to move axially along the lead screw 72, thereby driving the first component 1 to move axially along the lead screw 72. The movement of the first component 1 can drive the tower top component 3 to move, thereby driving the vehicle body 300 to move relative to the wheel 200 to adjust the distance between the vehicle body 300 and the wheel 200.

[0259] When actuator 10 is in the second operating mode, the disengagement / engagement switching assembly 9 is in a coupled state, and the second power assembly 8 is coupled to the transmission assembly 1A. At this time, the first power assembly 7 operates, driving the lead screw 72 to rotate. Simultaneously, the second power assembly 8 operates, also outputting driving force to the lead screw 72 through the disengagement / engagement switching assembly 9 and the transmission assembly 1A, driving the lead screw 72 to rotate. Since the nut 13 is threadedly engaged with the lead screw 72 and is fixed to the first component 1, the rotation of the lead screw 72 can drive the nut 13 to move axially along the lead screw 72, thereby driving the first component 1 to move axially along the lead screw 72. The movement of the first component 1 can drive the tower top assembly 3 to move, thereby driving the vehicle body 300 to move relative to the wheel 200, in order to adjust the distance between the vehicle body 300 and the wheel 200.

[0260] In some embodiments, please refer to Figures 3 and 9, where Figure 9 is an enlarged schematic diagram of the structure at point B in Figure 3. The first power assembly 7 includes a first housing 73, a first stator 74, and a first mover 75. The first housing 73 has a first receiving cavity 731, and the first stator 74 is disposed within the first receiving cavity 731 and fixedly connected to the first housing 73. The first mover 75 is disposed within the first receiving cavity 731 and is capable of rotating relative to the first stator 74. The first mover 75 is fixedly connected to a lead screw 72.

[0261] The first stator 74 and the first mover 75 cooperate to make the first mover 75 rotate, so as to output driving force to the lead screw 72, causing the lead screw 72 to rotate, thereby driving the first component 1 to move relative to the second component 2.

[0262] In some examples, the first stator 74 includes a first core assembly and a first winding assembly for providing the required excitation magnetic field. The first mover 75 includes a first permanent magnet and a first cage for providing a permanently stable magnetic field. The coil of the first winding assembly is energized to generate a magnetic field, and the first mover 75 rotates through electromagnetic induction, driving the lead screw 72 to rotate. The lead screw 72 cooperates with the nut 13, causing the nut 13 to convert the rotational motion of the lead screw 72 into its own linear motion, which is then transmitted to the vehicle body 300.

[0263] In some examples, the lead screw 72 includes a threaded section 721 and a first drive section 722, the first drive section 722 being connected to the threaded section 721, and at least a portion of the first drive section 722 being located within a first receiving cavity 731. The first drive section 722 is fixedly connected to a first mover 75.

[0264] The threaded section 721 engages with the nut 13 to convert the rotational motion of the lead screw 72 into linear motion.

[0265] In some examples, as shown in Figures 9, 10, and 11, Figure 10 is a structural schematic diagram of the first housing of the first power assembly shown in Figure 3 and the clutch box of the disengagement and engagement switching assembly, and Figure 11 is a cross-sectional structural schematic diagram of the first housing and clutch box shown in Figure 10. The first housing 73 has a first through hole 732 communicating with the first receiving cavity 731 on one side of the lead screw 72 in the axial direction. The lead screw 72 passes through the first through hole 732 so that the threaded section 721 is located outside the first receiving cavity 731 and engages with the nut 13.

[0266] In some examples, the first mover 75 surrounds the first transmission section 722 circumferentially. The first stator 74 surrounds the first mover 75 circumferentially along the first transmission section 722. That is, both the first mover 75 and the first stator 74 are coaxially arranged with the lead screw 72.

[0267] In other examples, the first power assembly 7 may further include a first output shaft, with a first mover 75 disposed around and fixedly connected to the first output shaft. The first output shaft is located on one side of the first transmission section 722 in the radial direction, and the first output shaft is connected to the first transmission section 722 via a transmission structure. That is, the first mover 75 and the lead screw 72 are disposed on opposite axes. The transmission structure may be a gear transmission structure, a chain transmission structure, or a belt transmission structure, etc.

[0268] In some examples, the first stator 74 is fixed to the inner wall of the first housing 73. Specifically, the first stator 74 can be fixed to the inner wall of the first housing 73 by heat-press fitting, so as to restrict the axial movement of the first stator 74 in the lead screw 72 by the first housing 73, so as to ensure that the first stator 74 will not deviate due to the interaction force between it and the first mover 75 during operation, thereby ensuring the stability of the first power assembly 7.

[0269] In some embodiments, please refer to FIG12, which is a cross-sectional structural schematic diagram of the first power assembly in the actuator shown in FIG6. The height H1 of the first power assembly 7 in the first direction is less than or equal to 80mm. For example, the height H1 of the first power assembly 7 in the first direction can be 80mm, 75mm, 70mm, 65mm, 60mm, 55mm, 50mm, etc. It should be noted that the height H1 of the first power assembly 7 in the first direction refers to the height of the first stator 74 in the first direction.

[0270] The outer diameter d3 of the first power assembly 7 in the second direction is less than or equal to 120 mm. For example, the outer diameter d3 of the first power assembly 7 in the second direction can be 120 mm, 115 mm, 110 mm, 105 mm, 100 mm, 95 mm, 90 mm, 85 mm, 80 mm, 75 mm, 70 mm, etc. It should be noted that the outer diameter d3 of the first power assembly 7 in the second direction refers to the outer diameter of the first stator 74 in the second direction.

[0271] By setting the height of the first power assembly 7 in the first direction and the outer diameter in the second direction within the aforementioned range, the volume of the first power assembly 7 can be made smaller, thereby avoiding the first power assembly 7 occupying a large amount of space.

[0272] In some embodiments, referring to FIG9, the first power assembly 7 further includes a bushing assembly 76. The bushing assembly 76 is disposed between the first mover 75 and the lead screw 72, specifically between the first mover 75 and the first transmission section 722, for connecting the first mover 75 and the first transmission section 722. Furthermore, the bushing assembly 76 also prevents direct contact between the first mover 75 and the first transmission section 722, thereby protecting the first mover 75 and the first transmission section 722.

[0273] In some examples, the bushing assembly 76 can be connected to the first mover 75 by means of snap-fit, screw-fit, interference fit, etc. The bushing assembly 76 can be connected to the first transmission section 722 by means of snap-fit, screw-fit, interference fit, spline connection, etc.

[0274] In some examples, the bushing assembly 76 may include a separately configured first bushing 761 and a second bushing 762. The first bushing 761 and the second bushing 762 are arranged along the axial direction of the lead screw 72.

[0275] In some examples, the first bushing 761 and the second bushing 762 are in contact. Specifically, the first bushing 761 and the second bushing 762 abut against each other.

[0276] In some examples, the first bushing 761 and the first transmission section 722 can be connected by a spline. In other examples, the first bushing 761 and the first transmission section 722 can also be connected by snap-fit, screw-fit, interference fit, or other methods.

[0277] In some examples, please refer to Figures 9, 13, and 14. Figure 13 is a structural schematic diagram of the first bushing shown in Figure 9, and Figure 14 is a cross-sectional structural schematic diagram of the first bushing shown in Figure 13. The first bushing 761 includes a first sleeve portion 7611 and a first flange portion 7612. The first sleeve portion 7611 is disposed around the first transmission section 722. The first flange portion 7612 is disposed around the first sleeve portion 7611 and is located on the side of the first mover 75 facing the threaded section 721. The first flange portion 7612 is fixedly connected to the first mover 75, specifically, by fasteners such as bolts, screws, and rivets.

[0278] In some examples, the second bushing 762 and the first transmission section 722 can be connected by a spline. In other examples, the second bushing 762 and the first transmission section 722 can also be connected by snap-fit, screw-fit, interference fit, or other methods.

[0279] In some examples, please refer to Figures 9, 15, and 16. Figure 15 is a structural schematic diagram of the second bushing shown in Figure 9, and Figure 16 is a cross-sectional structural schematic diagram of the second bushing shown in Figure 15. The second bushing 762 includes a second sleeve portion 7621 and a second flange portion 7622. The second sleeve portion 7621 is disposed around the first transmission section 722. The second flange portion 7622 is disposed around the second sleeve portion 7621 and is located on the side of the first mover 75 opposite to the threaded section 721. The second flange portion 7622 is fixedly connected to the first mover 75, specifically, by fasteners such as bolts, screws, and rivets.

[0280] By setting the bushing assembly 76 as a separate first bushing 761 and second bushing 762, the installation of the first bushing 761 and the second bushing 762 can be facilitated.

[0281] In some embodiments, referring to FIG9, the first power assembly 7 further includes a first bearing 77. The outer ring of the first bearing 77 is fixedly connected to the first housing 73. The lead screw 72 passes through the first bearing 77 and is fixedly connected to the inner ring of the first bearing 77.

[0282] The first bearing 77 is used to support the rotation of the lead screw 72 to improve the stability of the rotation of the lead screw 72.

[0283] In some examples, the first bearing 77 is located inside the first housing 73 and connected to the first transmission section 722. In other examples, the first bearing 77 may be located outside the first housing 73. In Figure 9, the first bearing 77 is located inside the first housing 73.

[0284] In some examples, the first bearing 77 is located on the side of the bushing assembly 76 facing the threaded section 721. The first bearing 77 contacts the bushing assembly 76. Specifically, the first bearing 77 contacts the first bushing 761. Exemplarily, the first bearing 77 abuts against the first bushing 761.

[0285] The first bearing 77 can limit the first bushing 761 in the axial direction of the lead screw 72 to prevent the first bushing 761 from moving in the axial direction of the lead screw 72, thereby ensuring the stability of the connection between the first bushing 761 and the first mover 75, as well as between the first bushing 761 and the lead screw 72.

[0286] In some examples, please continue referring to Figure 11. The first housing 73 is provided with a first mounting groove 733, which is recessed from the inner wall of the first receiving cavity 731 toward the threaded section 721. A first bearing 77 is disposed within the first mounting groove 733. By disposing of the first bearing 77 within the first mounting groove 733, the first bearing 77 can be rotated and supported by the first mounting groove 733. Furthermore, the first mounting groove 733 can limit the first bearing 77 in the radial direction of the lead screw 72, thereby ensuring the stability of the first bearing 77 on the first housing 73.

[0287] In addition, the first bearing 77 can abut against the inner wall surface of the first mounting groove 733 facing the threaded section 721 and the first bushing 761, thereby limiting the first bearing 77 in the axial direction of the lead screw 72 to further improve the stability of the first bearing 77 on the first housing 73.

[0288] The first through hole 732 is connected to the first mounting groove 733. Along the radial direction of the lead screw 72, the radial dimension of the first through hole 732 is smaller than the radial dimension of the first mounting groove 733, so that the first through hole 732 can limit the first bearing 77 facing the inner wall surface of the threaded section 721.

[0289] In some embodiments, the first power assembly 7 further includes a second bearing 78. The outer ring of the second bearing 78 is fixedly connected to the first housing 73. A lead screw 72 passes through the second bearing 78 and is fixedly connected to the inner ring of the second bearing 78. The second bearing 78 and the first housing 73 can be directly connected or indirectly connected.

[0290] The second bearing 78 is used to support the rotation of the lead screw 72 to improve the stability of the lead screw 72 rotation.

[0291] In some examples, the second bearing 78 is located inside the first housing 73 and connected to the first transmission section 722. In other examples, the second bearing 78 may also be located outside the first housing 73.

[0292] In some examples, the second bearing 78 is located on the side of the bushing assembly 76 opposite to the threaded section 721. The second bearing 78 contacts the bushing assembly 76. Specifically, the second bearing 78 contacts the second bushing 762. Exemplarily, the second bearing 78 abuts against the second bushing 762.

[0293] The second bearing 78 can limit the second bushing 762 in the axial direction of the lead screw 72 to prevent the second bushing 762 from moving in the axial direction of the lead screw 72, thereby ensuring the stability of the connection between the second bushing 762 and the first mover 75, as well as between the second bushing 762 and the lead screw 72.

[0294] In some examples, please continue to refer to Figure 11. The first housing 73 includes a first top plate 734 and a first surrounding plate 735. The first top plate 734 and the first surrounding plate 735 can be an integral structure or a separate structure.

[0295] The first surrounding plate 735 is connected to the side of the first top plate 734 opposite to the threaded section 721 and is arranged around the lead screw 72. The first surrounding plate 735 and the first top plate 734 form a first receiving cavity 731, and the first receiving cavity 731 has a first opening on the side opposite to the threaded section 721. The first mounting groove 733 and the first through hole 732 are both provided on the top plate.

[0296] Please refer to Figures 9, 17 and 18. Figure 17 is a structural schematic diagram of the transmission box shown in Figure 9, and Figure 18 is a cross-sectional structural schematic diagram of the transmission box shown in Figure 17.

[0297] The transmission assembly 1A includes a transmission housing 11A, which is fixedly connected to the side of the first housing 73 opposite to the threaded section 721 and covers the first opening. The transmission housing 11A has a second mounting groove 111A. The second mounting groove 111A is recessed from the surface of the transmission housing 11A toward the threaded section 721 in a direction opposite to the threaded section 721, and a second bearing 78 is disposed within the second mounting groove 111A. In this case, the second bearing 78 is indirectly connected to the first housing 73.

[0298] The second bearing 78 is provided in the second mounting groove 111A, which can provide rotational support for the second bearing 78. In the radial direction of the lead screw 72, the second mounting groove 111A can limit the second bearing 78, thereby ensuring the stability of the second bearing 78 on the transmission box 11A.

[0299] In addition, the second bearing 78 can abut against the inner wall surface of the second mounting groove 111A opposite to the threaded section 721 and the second bushing 762, thereby limiting the second bearing 78 in the axial direction of the lead screw 72 to further improve the stability of the second bearing 78 on the transmission box 11A.

[0300] In some other examples, the first housing 73 may also include a first base plate connected to the side of the first enclosure 735 opposite to the top plate to cover the first opening. In this case, the second mounting groove 111A may be provided in the first base plate.

[0301] Furthermore, the transmission box 11A can be fixed to the base plate. In addition, the transmission box 11A can also be fixed to the first top plate 734 or the first enclosure plate 735.

[0302] In some embodiments, referring to Figures 9, 17, and 18, the transmission housing 11A is connected to the side of the first housing 73 opposite to the threaded section 721. The transmission housing 11A has a second through hole 112A. The second through hole 112A extends from the surface of the transmission housing 11A facing the first housing 73 into the interior of the transmission housing 11A. The first transmission section 722 of the lead screw 72 passes through the second through hole 112A, and a portion of the first transmission section 722 is located inside the transmission housing 11A.

[0303] In some examples, please continue referring to Figure 9. The transmission housing 11A also includes a third bearing 113A. The first transmission section 722 passes through the third bearing 113A and is fixedly connected to the inner ring of the third bearing 113A. The third bearing 113A supports the rotation of the first transmission section 722, further improving its stability.

[0304] In some examples, referring to Figure 18, the transmission housing 11A includes a second top plate 114A and a second surrounding plate 115A. The second top plate 114A is connected to the side of the first housing 73 opposite to the threaded section 721 and covers the first opening. The second surrounding plate 115A is connected to the side of the second top plate 114A opposite to the first housing 73 and is arranged around the first transmission section 722. The second surrounding plate 115A and the second top plate 114A form a second receiving cavity 116A, and the end of the second receiving cavity 116A opposite to the first housing 73 has a second opening.

[0305] Please refer to Figures 9, 19, and 20. Figure 19 is a structural schematic diagram of the fork arm shown in Figure 9, and Figure 20 is a cross-sectional structural schematic diagram of the fork arm shown in Figure 19. The fork arm 4 is connected to the side of the transmission housing 11A facing away from the first housing 73 and covers the second opening. The third bearing 113A is fixed to the fork arm 4. The fork arm 4 and the transmission housing 11A can be connected by means of screwing, snap-fitting, welding, riveting, etc.

[0306] In some examples, the second top plate 114A and the second enclosure plate 115A can be an integral structure or a separate structure.

[0307] In some examples, the fork arm 4 is provided with a third mounting groove 41. The third bearing 113A is disposed in the third mounting groove 41. The third mounting groove 41 can limit the third bearing 113A in the radial direction of the lead screw 72 to ensure the stability of the support of the third bearing 113A for the lead screw 72.

[0308] In some embodiments, for the convenience of arranging the first power assembly 7, the second power assembly 8, the first component 1 and the second component 2, the assembly composed of the first component 1 and the second component 2 is the first assembly, and at least one of the first power assembly 7 and the second power assembly 8 is located on the periphery of the first assembly.

[0309] In other words, the first power assembly 7 is located on the periphery of the first assembly, or the second power assembly 8 is located on the periphery of the first assembly, or both the first power assembly 7 and the second power assembly 8 are located on the periphery of the first assembly. Here, the periphery of the first assembly refers to one side of the first assembly in the direction perpendicular to the axial direction of the lead screw 72.

[0310] In this way, with the first power assembly 7, the second power assembly 8 and the first assembly arranged along the axial direction of the lead screw 72 (i.e. the relative movement direction of the first component 1 and the second component 2), at least one of the first power assembly 7 and the second power assembly 8 is located on the periphery of the first assembly, which can save space of the actuator in the axial direction of the lead screw 72, so as to make reasonable use of space.

[0311] In some examples, the first power assembly 7 is arranged along a first direction with the first assembly, and the second power assembly 8 is located around the periphery of the first assembly. The first direction is parallel to the relative movement direction of the first component 1 and the second component 2.

[0312] In this way, the structure of the first power assembly 7 and the first assembly can be made more compact, so as to facilitate the cooperation between the first power assembly 7 and the first assembly.

[0313] Based on this, in some embodiments, the transmission component 1A is connected between the first power component 7 and the second power component 8, and the separation and engagement switching component 9 is disposed between the second power component 8 and the transmission component 1A.

[0314] Specifically, the transmission assembly 1A is located on the side of the first power assembly 7 facing away from the first assembly. The disengagement / engagement switching assembly 9 is located on the side of the transmission assembly 1A facing the first assembly, and is situated on the radial side of the first power assembly 7 on the lead screw 72. The second power assembly 8 is located on the side of the disengagement / engagement switching assembly 9 facing away from the transmission assembly 1A.

[0315] In this way, the separation and engagement switching component 9 is located between the transmission component 1A and the second power component 8. Compared with the scheme where the separation and engagement switching component 9 is located between the transmission component 1A and the first power component 7, the size of the actuator in the first direction can be further reduced, thereby reducing the space occupied by the actuator in the first direction.

[0316] In addition, the separation and engagement switching assembly 9 is located between the transmission assembly 1A and the second power assembly 8, which also facilitates the routing of the wiring harness of the separation and engagement switching assembly 9 and the wiring harness of the second power assembly 8, thereby facilitating the routing of the wiring harness and the arrangement of each component.

[0317] At this point, the engagement / disengagement switching assembly 9 can be a wet clutch, i.e., a clutch cooled by oil. This also facilitates the use of the same lubricating oil used to lubricate and cool the second power assembly 8 to lubricate and cool the engagement / disengagement switching assembly 9, further simplifying the arrangement of the components.

[0318] In some other examples, the disengagement / engagement switching assembly 9 may also be located between the transmission assembly 1A and the first power assembly 7. In this case, the disengagement / engagement switching assembly 9 may be a dry clutch, i.e., a mechanical clutch.

[0319] In some embodiments, the transmission assembly 1A may be a gear transmission assembly, a chain transmission assembly, or a belt transmission assembly, etc. Specifically, the transmission assembly 1A includes the aforementioned transmission housing 11A and a transmission component 12A disposed within the second receiving cavity 116A of the transmission housing 11A. Specifically, the transmission component 12A may be a gear transmission assembly, a chain transmission assembly, or a belt transmission assembly, etc. In some examples, please continue to refer to FIG9, the transmission assembly 1A is a gear transmission assembly. Exemplarily, the transmission assembly 1A includes a first gear 121A, a third gear 123A, and at least one second gear 122A located between the first gear 121A and the third gear 123A;

[0320] The first gear 121A is connected to the first power assembly 7. Specifically, in some examples, the first gear 121A can be directly connected to the first power assembly 7. For example, the first power assembly 7 may include a second output shaft, a first mover 75 surrounding the second output shaft and fixedly connected to the second output shaft, the second output shaft being drivenly connected to a lead screw 72, and the first gear 121A can be connected to the first output shaft. In other examples, the first gear 121A may also be connected to a lead screw for indirect connection to the first power assembly 7 via the lead screw.

[0321] The third gear 123A is connected to the separation and engagement switching assembly 9. The first gear 121A, at least one second gear 122A and the third gear 123A are arranged in a row and mesh in sequence.

[0322] Specifically, the transmission component 12A includes a first gear 121A, at least one second gear 122A, and a third gear 123A.

[0323] The example described here uses one second gear 122A. The transmission component 12A also includes a second rotating shaft 124A.

[0324] The first gear 121A is fixedly connected to the first transmission section 722 of the lead screw 72 and is coaxially arranged with the lead screw 72. The second rotating shaft 124A is rotatably connected to the transmission box 11A. The axis of the second rotating shaft 124A is its rotation axis, and the axis of the second rotating shaft 124A is parallel to the axis of the lead screw 72.

[0325] The third gear 123A is fixed to the second rotating shaft 124A and is coaxially arranged with the second rotating shaft 124A. The second gear 122A is located between the first gear 121A and the second gear 122A, and meshes with both the first gear 121A and the second gear 122A. The separation and engagement switching assembly 9 is located between the second rotating shaft 124A and the second power assembly 8.

[0326] Thus, when the separation and engagement switching assembly 9 is in a coupled state, the driving force output by the second power assembly 8 can be transmitted to the second rotating shaft 124A through the separation and engagement switching assembly 9, and then sequentially transmitted to the lead screw 72 through the third gear 123A, the second gear 122A and the first gear 121A, and then transmitted to the nut 13 and the first component 1 through the lead screw 72, thereby driving the first component 1 to move.

[0327] The driving force output from the second power component 8 is transmitted through the first gear 121A, the second gear 122A, and the third gear 123A, which makes the transmission of driving force more stable. In addition, the structure of the first gear 121A, the second gear 122A, and the third gear 123A is relatively simple and occupies little space, thereby reducing the space occupied by the transmission component 1A.

[0328] In some embodiments, the tooth width of the transmission component 1A is less than or equal to 30 mm, that is, the thickness of the teeth of the first gear 121A, the second gear 122A, and the third gear 123A in the axial direction (i.e., the first direction) of the first gear 121A is less than or equal to 30 mm. For example, the tooth width of the transmission component 1A can be 30 mm, 25 mm, 20 mm, 15 mm, 10 mm, etc.

[0329] The tooth width of the transmission component 1A is within the above range, which can ensure the structural strength of the transmission component 1A and reduce the space occupied by the transmission component 1A in the first direction.

[0330] In some embodiments, the diameter of the pitch circle of the first gear 121A is less than or equal to 60 mm. For example, the diameter of the pitch circle of the first gear 121A can be 60 mm, 55 mm, 50 mm, 45 mm, 40 mm, 35 mm, 30 mm, 25 mm, 20 mm, etc.

[0331] In some embodiments, the diameter of the pitch circle of the third gear 123A is less than or equal to 100 mm. For example, the diameter of the pitch circle of the third gear 123A can be 100 mm, 95 mm, 90 mm, 85 mm, 80 mm, 75 mm, 70 mm, 65 mm, 60 mm, 55 mm, 50 mm, 45 mm, 40 mm, etc.

[0332] In some embodiments, please refer to FIG21, which is a cross-sectional structural schematic diagram of the transmission assembly in the actuator shown in FIG6. The center distance L3 between the first gear 121A and the third gear 123A satisfies: 80mm ≤ L3 ≤ 120mm. For example, L3 can be 80mm, 85mm, 90mm, 95mm, 100mm, 105mm, 110mm, 115mm, 120mm, etc. Wherein, the center distance L3 is the distance between the axis of the first gear 121A and the axis of the third gear 123A.

[0333] By setting the center distance L3 between the first gear 121A and the third gear 123A within the above range, the space occupied by the transmission assembly 1A in the arrangement direction of the first gear 121A, the second gear 122A and the third gear 123A can be reduced, so as to facilitate the miniaturization of the actuator.

[0334] In some embodiments, the transmission ratio i of the transmission assembly satisfies: i ≥ n1 / n2. Wherein, n1 / n2 is the ratio of n1 to n2. Wherein, n1 is the rated speed of the first power assembly 7, and n2 is the rated speed of the second power assembly 8.

[0335] In some other embodiments, the transmission assembly 1A may only include the first gear 121A and the third gear 123A, that is, excluding the second gear 122A. In this case, the first gear 121A and the third gear 123A are directly meshed. Alternatively, the transmission assembly 1A may include at least one other gear in addition to the first gear 121A, the second gear 122A, and the third gear 123A.

[0336] In some embodiments, referring to Figure 9, a fourth bearing 117A is also provided inside the transmission housing 11A, and the fourth bearing 117A is fixed to the fork arm 4. The second rotating shaft 124A passes through the fourth bearing 117A and is fixedly connected to the inner ring of the fourth bearing 117A. The fourth bearing 117A is used to provide rotational support for the second rotating shaft 124A, thereby improving the stability of the second rotating shaft 124A.

[0337] In some examples, please continue to refer to Figures 19 and 20. The fork arm 4 is provided with a fourth mounting groove 42, and the fourth bearing 117A is disposed in the fourth mounting groove 42. The fourth mounting groove 42 can limit the fourth bearing 117A in the radial direction of the second rotating shaft 124A to ensure the stability of the fourth bearing 117A in supporting the second rotating shaft 124A.

[0338] In some examples, along the axial direction of the second rotation axis 124A, the disengagement engagement switching assembly 9 is connected to the side of the transmission housing 11A opposite to the fork arm 4, and the disengagement engagement switching assembly 9 is located on the side of the first housing 73 in the radial direction of the second rotation axis 124A.

[0339] Please refer to Figures 9, 17, and 18. The transmission housing 11A is provided with a third through hole 118A. Specifically, the third through hole 118A is located on the second top plate 114A. The third through hole extends from the side surface of the transmission housing 11A toward the separation / engagement switching assembly 9 to the second receiving cavity 116A. The second rotating shaft 124A passes through the third through hole 118A, such that a portion of the second rotating shaft 124A is located outside the second receiving cavity 116A and is connected to the separation / engagement switching assembly 9.

[0340] The transmission housing 11A is also provided with a fifth bearing 119A, which is located on the side of the transmission housing 11A facing the separation and engagement switching assembly 9 and is fixedly connected to the transmission housing 11A. The second rotating shaft 124A passes through the fifth bearing 119A and is fixedly connected to the inner ring of the fifth bearing 119A.

[0341] The fifth bearing 119A is used to further provide rotational support for the second rotating shaft 124A, so as to further improve the stability of the second rotating shaft 124A.

[0342] In some examples, the transmission housing 11A is provided with a fifth mounting groove 110A, which is recessed from the side surface of the transmission housing 11A facing the separation and engagement switching assembly 9 in a direction opposite to the separation and engagement switching assembly 9. A fifth bearing 119A is disposed within the fifth mounting groove 110A. The fifth mounting groove 110A can limit the fifth bearing 119A in the radial direction of the second rotating shaft 124A to ensure the stability of the fifth bearing 119A's support for the second rotating shaft 124A.

[0343] In some embodiments, referring to FIG9, the disengagement / engagement switching assembly 9 further includes a clutch housing 91 and a disengagement / engagement switching assembly body 92. The clutch housing 91 is fixedly connected to the transmission housing 11A. The clutch housing 91 has a third receiving cavity 911, and the disengagement / engagement switching assembly body 92 is disposed within the third receiving cavity 911.

[0344] In some examples, the clutch housing 91 includes a third top plate and a third side plate. The third top plate and the third side plate can be an integral structure or separate structures. The third side plate is located on the side of the third top plate facing the transmission housing 11A and is arranged around the second rotation axis 124A. The third side plate and the third top plate form a third receiving cavity 911, and the end of the third receiving cavity 911 facing away from the third top plate has a third opening. The transmission housing 11A covers the third opening and is fixedly connected to the third side plate.

[0345] In some examples, the clutch housing 91 and the first housing 73 can be an integral structure. Alternatively, they can be separate structures.

[0346] In some examples, the clutch housing 91 and the first housing 73 can be an integral structure, and the clutch housing 91 and the first housing 73 as a whole can be connected to the transmission box 11A by means of screwing, welding, snap-fitting, riveting, etc.

[0347] In some embodiments, please continue to refer to FIG9, the second power assembly 8 includes a second housing 81, a second stator 82, a second mover 83, and a second output shaft 84.

[0348] The second housing 81 is fixedly connected to the clutch housing 91 on the side opposite to the transmission housing 11A. Specifically, the second housing 81 and the clutch housing 91 can be connected by means of screwing, welding, snap-fitting, riveting, etc.

[0349] The second housing 81 has a fourth receiving cavity 811. The second stator 82 is disposed in the fourth receiving cavity 811 and is fixedly connected to the second housing 81. The second mover 83 is disposed in the fourth receiving cavity 811 and is fixedly connected to the second output shaft 84. The second output shaft 84 is connected to the disengagement / engagement switching assembly 9.

[0350] The second stator 82 and the second mover 83 cooperate to make the second mover 83 rotate, so as to output driving force to the second output shaft 84, causing the second output shaft 84 to rotate, thereby transmitting the driving force from the second output shaft 84 to the lead screw 72 through the separation engagement switching assembly 9 and the transmission assembly 1A.

[0351] In some examples, the second stator 82 is fixed to the inner wall of the second housing 81. Specifically, the second stator 82 can be fixed to the inner wall of the second housing 81 by heat-press fitting, so as to restrict the axial movement of the second stator 82 on the second output shaft 84 by the second housing 81, so as to ensure that the second stator 82 will not deviate due to the interaction force between it and the second mover 83 during operation, thereby ensuring the stability of the second power assembly 8.

[0352] In some examples, the second stator 82 includes a second core assembly and a second winding assembly for providing the required excitation magnetic field. The second mover 83 includes a second permanent magnet and a second cage for providing a permanently stable magnetic field. The coil of the second winding assembly is energized to generate a magnetic field, and the second mover 83 rotates through electromagnetic induction, driving the second output shaft 84 to rotate.

[0353] In some examples, the clutch housing 91 is provided with a fourth through hole 912, which extends from the side surface of the clutch housing 91 facing the second housing 81 to the third receiving cavity 911. The second output shaft 84 passes through the fourth through hole 912 such that a portion of the second output shaft 84 is located within the third receiving cavity 911 and is connected to the disengagement / engagement switching assembly 9.

[0354] In some examples, the second mover 83 surrounds the second output shaft 84 circumferentially. The second stator 82 surrounds the second mover 83 circumferentially along the second output shaft 84.

[0355] In some other examples, the separation / engagement switching component 9 can be directly connected between the second output shaft 84 and the lead screw 72, i.e., the transmission component 1A is not provided. In this case, the second output shaft 84 and the lead screw 72 are coaxially arranged.

[0356] In some embodiments, please refer to FIG22, which is a cross-sectional structural schematic diagram of the second power assembly shown in FIG6. The height H2 of the second power assembly 8 in the first direction is less than or equal to 100mm. For example, the height H2 of the second power assembly 8 in the first direction can be 100mm, 95mm, 90mm, 85mm, 80mm, 75mm, 70mm, 65mm, 60mm, 55mm, 50mm, etc. It should be noted that the height H2 of the second power assembly 8 in the first direction refers to the height of the second stator 82 in the first direction.

[0357] The outer diameter d4 of the second power assembly 8 in the second direction is less than or equal to 80 mm. For example, the outer diameter d4 of the second power assembly 8 in the second direction can be 80 mm, 75 mm, 70 mm, 65 mm, 60 mm, 55 mm, 50 mm, etc. It should be noted that the outer diameter d4 of the second power assembly 8 in the second direction refers to the outer diameter of the second stator 82 in the second direction.

[0358] By setting the height of the second power assembly 8 in the first direction and the outer diameter in the second direction within the aforementioned range, the volume of the second power assembly 8 can be reduced to avoid the second power assembly 8 occupying a large amount of space.

[0359] In some embodiments, please continue to refer to Figures 9, 23, and 24. Figure 23 is a structural schematic diagram of the separation / engagement switching assembly shown in Figure 9, and Figure 24 is a cross-sectional structural schematic diagram of the separation / engagement switching assembly shown in Figure 23. The separation / engagement switching assembly 9 includes a first rotating portion 921 and a second rotating portion 922. Specifically, the separation / engagement switching assembly body 92 includes a first rotating portion 921 and a second rotating portion 922. One of the first rotating portion 921 and the second rotating portion 922 is connected to the second power assembly 8. Specifically, one of the first rotating portion 921 and the second rotating portion 922 is fixedly connected to the second output shaft 84. The other of the first rotating portion 921 and the second rotating portion 922 is connected to the transmission assembly 1A. Specifically, the other of the first rotating portion 921 and the second rotating portion 922 is fixedly connected to the second rotating shaft 124A.

[0360] At least a portion of the second rotating portion 922 is movable along the arrangement direction of the first rotating portion 921 and the second rotating portion 922, so that the second rotating portion 922 is coupled or separated from the first rotating portion 921.

[0361] Specifically, in the first operating mode, the first rotating portion 921 separates from the second rotating portion 922, so that the separation-engagement switching assembly 9 separates the first power assembly 7 and the second power assembly 8. In the second operating mode, the first rotating portion 921 couples with the second rotating portion 922, so that the separation-engagement switching assembly 9 couples the first power assembly 7 and the second power assembly 8.

[0362] In some examples, the second rotating portion 922 includes a guide seat 9222 and a clutch 9221 connected to the guide seat 9222. The clutch 9221 is movable relative to the guide seat 9222 along the arrangement direction of the first rotating portion 921 and the second rotating portion 922 to couple or disengage from the first rotating portion 921.

[0363] In the first operating mode, the clutch 9221 is disengaged from the first rotating part 921, so that the disengagement and engagement switching assembly 9 disengages the first power assembly 7 and the second power assembly 8; in the second operating mode, the clutch 9221 is coupled to the first rotating part 921, so that the disengagement and engagement switching assembly 9 couples the first power assembly 7 and the second power assembly 8.

[0364] The direction of movement of the clutch can be consistent with the axial direction of the second output shaft 84.

[0365] In some other examples, the guide seat 9222 may be omitted, and only the clutch component 9221 may be set.

[0366] When the disengagement / engagement switching assembly 9 is in the coupled state, the clutch 9221 is coupled to the first rotating part 921, so that the second output shaft 84 is connected to the second rotating shaft 124A via the disengagement / engagement switching assembly 9. When the disengagement / engagement switching assembly 9 is in the disengaged state, the clutch 9221 is disconnected from the first rotating part 921, so that the second output shaft 84 is disconnected from the second rotating shaft 124A via the disengagement / engagement switching assembly 9.

[0367] Here, the first rotating portion 921 is connected to the second output shaft 84, and the second rotating portion 922 is connected to the second rotating shaft 124A, as an example.

[0368] In some examples, the guide seat 9222 is fixed to the second rotating shaft 124A. Specifically, the guide seat 9222 and the second rotating shaft 124A can be connected by means of snap-fit, screw connection, interference fit, spline connection, etc.

[0369] The first rotating portion 921 is fixed to the second output shaft 84. The clutch 9221 is movably connected to the guide seat 9222 along the axial direction of the second rotating shaft 124A and is located between the guide seat 9222 and the first rotating portion 921. In this way, the guide seat 9222 can support the clutch 9221 so that the clutch 9221 can be coupled or disconnected from the first rotating portion 921.

[0370] In some examples, the guide seat 9222 is also provided with a limiting hole 9222B extending radially along the second rotation axis 124A. The second rotation axis 124A is provided with a first limiting groove corresponding to the limiting hole 9222B. The guide seat 9222 and the second rotation axis 124A can be limited by a pin passing through the limiting hole 9222B and the first limiting groove.

[0371] In some examples, the first rotating portion 921 includes a first support member 9211 and a friction plate 9212. The friction plate 9212 is connected to the side of the first support member 9211 facing the second rotating portion 922. When the disengagement / engagement switching assembly 9 is in the coupled state, the friction plate 9212 is coupled to the clutch member 9221. The friction plate 9212 can increase the frictional force between itself and the clutch member 9221, thereby making the coupling connection between the friction plate 9212 and the clutch member 9221 more stable.

[0372] When the guide seat 9222 is fixed to the second rotating shaft 124A, the first support member 9211 is fixed to the second output shaft 84. The guide seat 9222 is fixed to the second output shaft 84, and the first support member 9211 is fixed to the second rotating shaft 124A.

[0373] In some examples, the friction plate 9212 can be made of materials with a high coefficient of friction, such as asbestos composite materials, ceramic fiber materials, conformal limiting materials, powder metallurgy materials, etc.

[0374] In some examples, the engagement / disengagement switching assembly 9 can also be a multi-friction-plate engagement / disengagement switching assembly. For example, the friction plate 9212 can also be provided on the side of the clutch 9221 facing the first rotating portion.

[0375] In some examples, the first support member 9211 may include a first support portion 9211B and a second support portion 9211C. The first support portion 9211B is disposed around the second output shaft 84 and is fixedly connected to the second output shaft 84. Specifically, the first support portion 9211B and the second output shaft 84 may be connected by means of screw connection, snap-fit ​​connection, spline connection, etc.

[0376] The second support portion 9211C is disposed around the first support portion 9211B and is fixed to the first support portion 9211B. The friction plate 9212 is disposed on the second support portion 9211C.

[0377] In some examples, the disengagement / engagement switching assembly 9 further includes a drive member 93 for driving the clutch member 9221 to move, thereby disengaging or coupling the clutch member 9221 from the first rotating portion. Exemplarily, the drive member 93 is used to drive the clutch member 9221 to move axially along the second output shaft 84, thereby disengaging or coupling the clutch member 9221 from the first rotating portion 921.

[0378] In some examples, the drive element 93 includes a drive coil 931, and the clutch element 9221 includes a magnetic element. The drive coil 931 and the magnetic element are arranged along the axial direction of the second output shaft 84. When the drive coil 931 is energized, it generates a magnetic field. Under the action of electromagnetic induction, the drive coil 931 can generate a force on the magnetic element along the axial direction of the second output shaft 84, thereby driving the magnetic element to move along the axial direction of the second output shaft 84, and thus driving the clutch element 9221 to move along the axial direction of the second output shaft 84.

[0379] For example, the magnetic component can be an armature, a permanent magnet, a conductive coil, or an electromagnet, etc.

[0380] In some examples, the drive unit 93 further includes a second support member 932, which is fixedly connected to the clutch housing 91. The drive coil 931 is disposed on the second support member 932. The second support member 932 can be an iron core, or other block-shaped structure, plate-shaped structure, etc., that can support the coil.

[0381] In some examples, the second support member 932 is fixed to the inner wall of the clutch housing 91. Specifically, the second support member 932 can be fixed to the inner wall of the clutch housing 91 by heat-press fitting, so as to restrict the axial movement of the second support member 932 on the second output shaft 84 by the clutch housing 91, thereby ensuring the connection stability of the second support member 932 and improving the support effect on the drive coil 931.

[0382] In some examples, the drive member 93 may be located on the side of the second support portion 9211C opposite to the second rotating assembly, in which case the drive member 93 may be arranged around the first support portion 9211B. In other examples, the drive member 93 may also be located on the side of the second rotating assembly opposite to the first rotating assembly, in which case the drive member 93 may be arranged around the second rotation axis 124A.

[0383] In some examples, the second support 932 has a fifth receiving cavity extending circumferentially along the second output shaft 84, and the drive coil 931 is disposed in the fifth receiving cavity.

[0384] In other examples, the drive 93 may also be other components capable of driving the clutch 9221 to move axially along the second output shaft 84, such as a linear motor.

[0385] In some examples, the second rotating portion 922 further includes a second elastic element 9223. The second elastic element 9223 is disposed between the clutch 9221 and the guide seat 9222. In the second operating mode, the second elastic element 9223 generates an elastic restoring force on the clutch 9221 away from the first rotating portion 921, that is, when the engagement / disengagement switching assembly 9 is in the coupled state, the second elastic element 9223 will undergo elastic deformation. Thus, when the engagement / disengagement switching assembly 9 needs to switch from the coupled state to the disconnected state, the drive coil 931 can be de-energized. At this time, the clutch 9221 can move away from the first rotating portion 921 under the action of the second elastic element 9223, thereby switching to the disconnected state. In this way, the engagement / disengagement switching assembly 9 can be easily switched from the coupled state to the disconnected state.

[0386] In some examples, the second elastic element can be a sheet, a column spring, a rubber spring, etc.

[0387] In some embodiments, referring to FIG9, the actuator 10 further includes a first sensor 1B and a second sensor 1C. The first sensor 1B is used to detect the movement of the first power component 7, and the second sensor 1C is used to detect the movement of the second power component 8.

[0388] In some examples, the first sensor 1B may be located within the first receiving cavity 731 of the first housing 73.

[0389] Please refer to Figures 25 and 26. Figure 25 is a top view of the first sensor 1B shown in Figure 9, and Figure 26 is a three-dimensional view of the first sensor 1B shown in Figure 25. The first sensor 1B includes a third stator 11B and a third rotor 12B. One of the third stator 11B and the third rotor 12B is fixedly connected to the first housing 73, and the other of the third stator 11B and the third rotor 12B is fixedly connected to the lead screw 72. The third stator 11B and the third rotor 12B can rotate relative to each other. In this way, when the lead screw 72 rotates, the other of the third stator 11B and the third rotor 12B can rotate with the lead screw 72, thereby causing the third stator 11B and the third rotor 12B to rotate relative to each other, so as to realize the detection of the motion of the first power assembly 7 by the first sensor 1B. Specifically, the rotational speed of the first power assembly 7 is detected by detecting the rotational speed of the lead screw 72.

[0390] In some examples, the first sensor 1B can be a resolver sensor, a displacement sensor, etc.

[0391] This application provides an exemplary description with the third mover 12B fixedly connected to the lead screw 72 and the third stator 11B fixedly connected to the first housing 73.

[0392] In some examples, the third mover 12B is disposed around the lead screw 72 and is fixedly connected to the bushing assembly 76. The third stator 11B is disposed around the third mover 12B and is fixedly connected relative to the first housing 73.

[0393] In some examples, the first sensor 1B is located on the side of the first mover 75 facing the transmission housing 11A and within the first receiving cavity 731. Alternatively, the first sensor 1B is located on the side of the first mover 75 facing away from the transmission housing 11A and within the first receiving cavity 731.

[0394] In some examples, referring further to Figures 15 and 26, one of the bushing assembly 76 and the third mover 12B is provided with a second positioning groove 763, which is recessed radially along the lead screw 72. The other of the bushing assembly 76 and the third mover 12B is provided with a second positioning protrusion 121B. The second positioning protrusion 121B is received within the second positioning groove 763.

[0395] In this way, by limiting the movement of the third mover 12B relative to the lead screw 72 in the circumferential direction of the lead screw 72 through the cooperation of the second positioning protrusion 121B and the second positioning groove 763, the third mover 12B can be prevented from rotating with the lead screw 72.

[0396] In some examples, the bushing assembly 76 is provided with a second positioning protrusion 121B, which protrudes from the outer peripheral surface of the bushing assembly 76 in a direction opposite to the lead screw 72. The second positioning protrusion 121B may be provided on either the first bushing 761 or the second bushing 762. The third mover 12B is provided with a second positioning groove 763, which is recessed from the inner peripheral surface of the third mover 12B in a direction opposite to the lead screw 72.

[0397] In other examples, the bushing assembly 76 is provided with a second positioning groove 763, which is recessed from the outer peripheral surface of the bushing assembly 76 toward the lead screw 72. The second positioning groove 763 may be provided in either the first bushing 761 or the second bushing 762. The third mover 12B is provided with a second positioning protrusion 121B, which protrudes from the inner peripheral surface of the third mover 12B toward the lead screw 72.

[0398] In other words, the third mover 12B can be fixedly connected to the first bushing 761. At this time, the third mover 12B can be located between the first bearing and the first flange portion 7612 of the first bushing 761, and the third stator 11B is located on the side of the first stator facing the threaded section.

[0399] Alternatively, the third mover 12B can also be fixedly connected to the second bushing 762.

[0400] In some examples, the third mover 12B is located between the second bearing 78 and the second flange portion 7622 of the second bushing 762. Specifically, the third mover 12B abuts against both the second bearing 78 and the second flange portion 7622 of the second bushing 762. In this way, the second bearing 78 and the second flange portion 7622 can limit the third mover 12B in the axial direction of the lead screw 72 to prevent the third mover 12B from deviating in the axial direction of the lead screw 72, thereby ensuring the accuracy of the detection by the first sensor 1B.

[0401] In some other examples, the third mover 12B can also be directly fixed to the lead screw 72. Specifically, the third mover 12B is directly fixed to the first transmission section 722.

[0402] In some other examples, the third mover 12B may also be fixedly connected to the first mover 75.

[0403] In some other examples, the first sensor may also be located inside the transmission housing. In this case, the third mover 12B may also be fixed to the first gear. The third stator 11B is located inside the transmission housing and fixed to the transmission housing.

[0404] In some other examples, the first sensor may also be located inside the clutch housing. In this case, the third mover 12B may also be fixedly connected to the second rotating portion 922 of the engagement / disengagement switching assembly 9. Specifically, the third mover 12B is fixedly connected to the guide seat 9222. The third stator 11B is fixed to the clutch housing.

[0405] In some examples, referring to Figure 18, the transmission housing 11A is provided with a second mounting groove 111A, and the third stator 11B of the first sensor 1B is disposed in the second mounting groove 111A. Exemplarily, the second mounting groove 111A includes a first groove portion 1111A and a second groove portion 1112A. The first groove portion 1111A is disposed on the side of the second groove portion 1112A facing the threaded section 721. The second bearing 78 is disposed in the second groove portion 1112A, and the third stator 11B of the first sensor 1B is disposed in the first groove portion 1111A. In this way, the third stator 11B can be limited radially by the first groove portion 1111A to ensure the stability of the engagement between the third stator 11B and the third mover 12B, thereby improving the detection accuracy of the first sensor 1B.

[0406] In some examples, please refer to Figure 27, which is a schematic diagram of the cooperation relationship between the first sensor, the transmission box, and the first pressure plate shown in Figure 26. The third stator 11B is provided with a first pressure plate 13B on the side facing the threaded section 721. The first pressure plate 13B is fixed to the transmission box 11A and is used to limit the side of the third stator 11B facing the threaded section 721 so that the third stator 11B is more stably fixed in the first groove 1111A.

[0407] In some examples, please refer to Figures 28 and 29. Figure 28 is a structural schematic diagram of the transmission box shown in Figure 17 with the first protrusion, and Figure 29 is a cross-sectional structural schematic diagram of the transmission box shown in Figure 28. The transmission box 11A has a first protrusion 120A. The first protrusion 120A protrudes from the surface of the transmission box 11A toward the threaded section 721 into the first receiving cavity 731 of the first housing 73. A second mounting groove 111A is provided in the first protrusion 120A.

[0408] In some examples, referring to Figures 25 and 26, the first sensor 1B also includes a first terminal box 14B, which is connected to the third stator 11B. The first terminal box 14B contains a first wiring harness 141B, which is electrically connected to the third stator 11B. The third stator 11B can be connected to external components such as a power supply or controller via the first wiring harness 141B.

[0409] In some examples, referring to Figures 28 and 29, the first protrusion 120A has a clearance notch 1201A communicating with the second mounting groove 111A. The clearance notch 1201A is recessed from the surface of the first protrusion 120A toward the threaded section 721 in a direction opposite to the threaded section 721, and extends along the outer surface of the first protrusion 120A to its inner surface. The first outlet box 14B is snapped into the clearance notch 1201A. This facilitates the installation of the first outlet box 14B, preventing it from interfering with the installation of the third stator 11B within the first groove 1111A.

[0410] In some embodiments, the second sensor 1C can detect the rotational speed of the second drive assembly by detecting the rotational speed of the second rotating shaft 124A. The second sensor 1C can be disposed within the clutch housing 91. The structure and arrangement of the second sensor 1C can refer to the first sensor 1B, and will not be described again here.

[0411] The second sensor 1C can be a resolver sensor, a displacement sensor, or something similar.

[0412] In some embodiments, referring to FIG9, the first housing 73 is provided with a first wiring hole 736 communicating with the first receiving cavity 731. The first wiring hole 736 extends from the outer surface of the first housing 73 to the first receiving cavity 731. The first wiring harness 141B is led out to the outside of the first housing 73 through the first wiring hole 736, that is, the first wiring harness 141B can be inserted into the first wiring hole 736 to facilitate connection with external devices. Furthermore, the wiring harness of the first power assembly 7 can also be inserted into the first wiring hole 736 to facilitate connection with external devices.

[0413] In addition, the wiring harnesses of the first wiring harness 141B and the first power assembly 7 are led out to the outside of the first housing 73 through the first wire hole 736, which is also beneficial for the arrangement of the wiring harnesses and saves the space occupied by the wiring harnesses.

[0414] In some examples, there may be multiple first threading holes 736 so that different wire harnesses can be threaded through different first threading holes 736.

[0415] In some examples, the first power assembly 7 also includes a first temperature sensor. The first temperature sensor is disposed in the first housing 73 and is used to detect the temperature of the first power assembly 7. The wiring harness of the first temperature sensor may also be passed through the first wiring hole 736.

[0416] For ease of description, the wiring harness of the first temperature sensor, the first wiring harness 141B, and the wiring harness of the first power assembly 7 are collectively referred to as wiring harnesses.

[0417] It should be noted that the first wire hole 736 is located on the first housing 73. Based on the location of the first mover 75 and the locations of the first sensor 1B and the first temperature sensor, the first wire hole 736 is located on the first housing 73 at a position that allows the wire harness to be led out or connected from the first wire hole 736 as close as possible, so as to shorten the length of the wire harness and facilitate the arrangement of the wire harness.

[0418] In some examples, the first wiring hole 736 is formed on the side wall of the first housing 73 away from the second power assembly 8. Forming the first wiring hole 736 on the side wall of the first housing 73 away from the second power assembly 8 can prevent the wiring harness from interfering with the components inside the first housing 73.

[0419] In some embodiments, referring to FIG9, the clutch housing 91 is provided with a second wiring hole 913 communicating with the third receiving cavity 911. The second wiring hole 913 extends from the outer surface of the clutch housing 91 to the third receiving cavity 911. The wiring harness of the first rotating part and / or the wiring harness of the second rotating part can be led out to the outside of the clutch housing 91 through the second wiring hole 913. That is, the wiring harness of the disengagement / engagement switching assembly body 92 can be passed through the second wiring hole 913 to facilitate connection with external devices.

[0420] Alternatively, the wiring harness of the second sensor 1C can also be threaded through the second wiring hole 913 to facilitate connection with external devices.

[0421] In addition, the wiring harness of the second sensor 1C and the wiring harness of the separation and engagement switching assembly body 92 are led out to the outside of the clutch box 91 through the second through hole 913, which is also beneficial to the arrangement of the wiring harness and saves the space occupied by the wiring harness.

[0422] In some examples, there may be multiple second wire holes 913 so that different wire harnesses can be threaded through different second wire holes 913.

[0423] For ease of description, the wiring harness of the first temperature sensor, the first wiring harness 141B, and the wiring harness of the first power assembly 7 are collectively referred to as wiring harnesses.

[0424] It should be noted that the second wire hole 913 is located on the clutch box 91. According to the setting position of the second sensor 1C and the setting position of the separation and engagement switching component 9, the second wire hole 913 is located on the clutch box 91 to facilitate the wire harness to be led out or connected from the second wire hole 913 nearby, so as to shorten the length of the wire harness and facilitate the arrangement of the wire harness.

[0425] In some examples, the second wiring hole 913 is located on the side wall of the clutch housing 91 away from the first power assembly 7. Locating the second wiring hole 913 on the side wall of the clutch housing 91 away from the first power assembly 7 avoids interference between the wiring harness and components within the clutch housing 91.

[0426] In some examples, along the axial direction of the lead screw 72, the second threading hole 913 is opened on the side of the clutch housing 91 near the transmission housing 11A.

[0427] In some embodiments, the second component 2 is fixedly connected to the side of the first housing 73 facing the threaded section 721. The second component 2 and the first housing 73 can be connected by means of screwing, snap-fitting, welding, riveting, etc.

[0428] In some embodiments, please refer to Figures 3, 30, and 31. Figure 30 is a structural schematic diagram of the second component 2 shown in Figure 3, and Figure 31 is a cross-sectional structural schematic diagram of the second component 2 shown in Figure 30. The second component 2 includes a second housing 22. A portion of the first housing 11 is located within the second housing 22, and the first housing 11 is movable relative to the second housing 22.

[0429] The threaded section 721 of the lead screw 72 passes through the second housing 22 and is connected to the nut 13 located in the first housing 11.

[0430] In some examples, the end of the second housing 22 facing away from the first housing 73 has a mounting hole 21 that communicates with the interior of the second housing 22. The first housing 11 passes through the mounting hole 21 and is movable within the mounting hole 21. The axial direction of the mounting hole 21 is aligned with the axial direction of the lead screw 72.

[0431] In some examples, both the first housing 11 and the second housing 22 can be cylindrical structures. The first housing 11 and the second housing 22 can also be other structures, such as plate structures. This application is illustrated by way of example, where both the first housing 11 and the second housing 22 are cylindrical structures.

[0432] In some embodiments, a first sliding assembly 23 is provided between the first housing 11 and the second housing 22. Specifically, the first sliding assembly 23 is disposed within the mounting hole 21. The first sliding assembly 23 is disposed between the inner wall surface of the mounting hole 21 and the second housing 22. When the first housing 11 and the second housing 22 move relative to each other along the axial direction of the lead screw 72, the first sliding assembly 23 is used to reduce the frictional force between the first housing 11 and the housing.

[0433] In some examples, the first sliding component 23 and the first housing 11 are interference-fitted; and / or, the first sliding component 23 and the second housing 22 are interference-fitted.

[0434] By interfering with the first sliding component 23 and the first housing 11 and / or interfering with the first sliding component 23 and the second housing 22, the coaxiality between the first housing 11 and the second housing 22 can be guaranteed, so that the relative movement of the first component 1 and the second component 2 is more stable.

[0435] In some examples, the first sliding component 23 can be a sliding bearing, a linear bearing, or even a ball spline. Besides reducing friction, the ball spline also restricts the rotation of the ball nut 13.

[0436] In some examples, please refer to Figure 32, which is an enlarged schematic diagram of the structure at point C in Figure 3. The second component 2 also includes a first limiting boss 24, which is connected to the inner wall surface of the second housing 22 and located on the side of the first sliding component 23 opposite to the first power component 7, to axially limit the first sliding component 23. Exemplarily, the first limiting boss 24 abuts against the first sliding component 23.

[0437] The first limiting boss 24 is used to limit the side of the first sliding component 23 facing away from the first housing 73, so as to prevent the first sliding component 23 from moving relative to the second housing 22 in the direction facing away from the first housing 73.

[0438] The first limiting boss 24 can extend circumferentially along the lead screw 72. The first limiting boss 24 can also be a plurality of protrusions spaced apart circumferentially along the lead screw 72.

[0439] In some examples, referring to Figure 31, the second component 2 further includes a second limiting boss 25, which is connected to the inner wall of the second housing 22 and located on the side of the first sliding assembly 23 facing the first power assembly 7. For example, the second limiting boss 25 abuts against the first sliding assembly 23.

[0440] The second limiting boss 25 is used to limit the first sliding component 23 on the side facing the first housing 73, so as to prevent the first sliding component 23 from moving relative to the second housing 22 in the direction facing the first housing 73. In addition, by limiting the first sliding component 23 from both sides of the first sliding component 23 in the axial direction of the lead screw 72, the first sliding component 23 can be prevented from moving relative to the second housing 22, thus affecting the smoothness of the movement of the first housing 11 relative to the second housing 22.

[0441] The second limiting boss 25 can extend circumferentially along the lead screw 72. The second limiting boss 25 can also be a plurality of protrusions spaced apart circumferentially along the lead screw 72.

[0442] In some embodiments, referring to FIG32, the second housing 22 is further provided with a sealing groove 221. The sealing groove 221 is located on the side of the first limiting boss 24 opposite to the first sliding assembly 23 and extends circumferentially along the lead screw 72. A sealing element 222 is provided in the sealing groove 221. The sealing element 222 is used to seal the gap between the second housing 22 and the first housing 11 to prevent external impurities from entering the second housing 22 and the first housing 11 and affecting the relative movement of the first housing 11 and the second housing 22.

[0443] Among them, the sealing element 222 can be a sealing ring, lip seal, etc.

[0444] In some embodiments, referring to FIG31, the second component 2 further includes a second sliding assembly 26. The second sliding assembly 26 is fixedly connected within the second housing 22 and is located on the side of the first sliding assembly 23 facing the first power assembly 7. The second sliding assembly 26 is used to reduce the friction between the first housing 11 and the second housing 22, so as to make the relative movement between the first housing 11 and the second housing 22 smoother.

[0445] In some examples, referring to Figures 10 and 11, the first housing 73 has a second protrusion 737 that protrudes from the surface of the first housing 73 toward the second housing 22 into the second housing 22. The second protrusion 737 is located on the side of the second sliding assembly 26 toward the first housing 73 and is used to axially limit the second sliding assembly 26.

[0446] In some examples, the second limiting boss is located between the first sliding component and the second sliding component, that is, the second sliding component 26 is disposed between the second protrusion 737 and the second limiting boss 25. For example, the second sliding component 26 abuts against both the second protrusion 737 and the second limiting boss 25.

[0447] In this way, the second sliding assembly 26 can be limited from both sides of the second sliding assembly 26 in the axial direction of the lead screw 72 by the second protrusion 737 and the second limiting protrusion 25, so as to prevent the second sliding assembly 26 from moving relative to the second housing 22 and affecting the smoothness of the first housing 11 moving relative to the second housing 22.

[0448] In some other examples, the second sliding component 26 can contact the first sliding component 23; specifically, the second sliding component 26 can directly abut against the first sliding component 23. That is, the second limiting boss 25 is not provided. Thus, the first sliding component 23 can limit the side of the second sliding component 26 facing away from the first housing 73, and the second sliding component 26 can limit the side of the first sliding component 23 facing the first housing 73. This simplifies the structure of the second component 2 and facilitates its manufacturing.

[0449] In other examples, referring to Figure 31, the second component 2 may also include a third limiting boss 27, which is connected to the inner wall of the second housing 22 and located on the side of the second sliding assembly 26 facing the first housing 73, to axially limit the second sliding assembly 26. Exemplarily, the third limiting boss 27 abuts against the second sliding assembly 26.

[0450] Thus, the second sliding assembly 26 can be limited from both sides of the lead screw 72 along the axial direction by the third limiting boss 27 and the second limiting boss 25. The third limiting boss 27 can extend circumferentially along the lead screw 72. The third limiting boss 27 can also be a plurality of protrusions spaced apart circumferentially along the lead screw 72.

[0451] At this time, the second protrusion 737 on the first housing 73 can be located on the side of the third limiting boss 27 facing the lead screw 72, so that the second protrusion 737 cooperates with the third limiting boss 27 to restrict the circumferential rotation of the second housing 22. Specifically, along the radial direction of the lead screw 72, at least one side of the second protrusion 737 is provided with a limiting plane, which cooperates with the third limiting boss 27 to restrict the circumferential rotation of the second housing 22.

[0452] In some embodiments, please refer to Figures 33 and 34. Figure 33 is a structural schematic diagram of the second component shown in Figure 30 from another perspective, and Figure 34 is a structural schematic diagram of the second component shown in Figure 33 when it is tilted. The second sliding assembly 26 includes a plurality of sliding members 261 arranged opposite to each other along a second direction (i.e., the radial direction of the lead screw 72). The sliding members 261 are fixedly connected to the inner wall surface of the second housing 22. The second direction is perpendicular to the relative movement direction of the first component 1 and the second component 2.

[0453] By using multiple opposing sliding members 261, friction during the movement of the first housing 11 relative to the second housing 22 can be reduced, and material can be saved compared to the second sliding assembly 26 surrounding the lead screw 72. Furthermore, the second sliding assembly 26 can further improve the coaxiality of the first housing 11 and the second housing 22, making the relative movement of the first housing 11 and the second housing 22 smoother. Figure 34 shows two sliding members 261.

[0454] In some examples, the slider 261 is a plate-like structure. In this way, the slider 261 can also restrict the circumferential rotation of the first housing 11 relative to the second housing 22, so that the movement of the first housing 11 relative to the second housing 22 is smoother.

[0455] At this time, the sliding member 261 can also cooperate with the flange structure 132 of the nut 13 to restrict the circumferential rotation of the nut 13 and improve the stability of the cooperation between the nut 13 and the threaded section 721.

[0456] In some examples, please refer to Figures 3 and 35, where Figure 35 is a structural schematic diagram of the first component shown in Figure 3. The first housing 11 has a third protrusion 111, which protrudes from the outer surface of the first housing 11 in a direction opposite to the inner surface of the first housing 11 along a second direction (the radial direction of the lead screw 72). Along the second direction, the third protrusion 111 has opposing sliding planes 1111, one of which is slidably engaged with a slider 261.

[0457] In this way, the friction between the first housing 11 and the second housing 22 when they move relative to each other can be further reduced by the cooperation between the sliding plane 1111 and the sliding member 261, and the circumferential rotation of the first housing 11 can be further prevented.

[0458] In some examples, please refer to Figures 33, 34, and 36, where Figure 36 is a cross-sectional view of the second component shown in Figure 33. The second component 2 also includes two second limiting grooves 28 arranged opposite each other along a second direction. A slider 261 is engaged within one of the second limiting grooves 28. The second limiting grooves 28 restrict the slider 261 from rotating circumferentially along the lead screw 72, thereby making the connection between the slider 261 and the second housing 22 more stable.

[0459] The second limiting groove 28 can be recessed from the inner wall surface of the second housing 22 in the direction opposite to the lead screw 72 and extend along the axial direction of the lead screw 72. Alternatively, the second limiting groove 28 can also be formed by protruding ribs 223 provided on the inner wall surface of the second housing 22 and spaced circumferentially along the lead screw 72.

[0460] In some examples, the second sliding component 26 can be copper-based or other self-lubricating materials.

[0461] In some examples, please refer to Figures 37 and 38. Figure 37 is a structural schematic diagram of the first component shown in Figure 35 when it is equipped with ball bearings, and Figure 38 is a cross-sectional structural schematic diagram of the first component shown in Figure 37. Multiple ball bearings 1112 can be embedded within the third protrusion 111. These multiple ball bearings 1112 are rotatable relative to the third protrusion 111 and contact the sliding member 261. In this way, during the movement of the first housing 11 relative to the second housing 22, the multiple ball bearings 1112 within the third protrusion 111 can roll on the sliding member 261, further reducing the friction between the first housing 11 and the second housing 22 through rolling friction.

[0462] In some embodiments, at least a portion of the threaded section 721 is located inside the first housing 11, and the nut 13 is connected to the interior of the first housing 11. This facilitates lubrication and cooling of the threaded section 721 and the nut 13, ensuring a smoother fit. Referring to Figure 39, which is a schematic diagram of the structure of the first component shown in Figure 35 with an oil inlet and an oil nozzle, the first housing 11 has an oil inlet 112 communicating with the interior of the first housing 11. The first component 1 also includes an oil nozzle 113 connected to the oil inlet 112. In this way, lubricating oil can be delivered to the first housing 11 through the oil nozzle 113, thereby lubricating and cooling the threaded section 721 and the nut 13.

[0463] In some examples, the oil inlet 112 may extend from the side surface of the first housing 11 opposite to the first housing 73 into the interior of the first housing 11.

[0464] In some examples, please refer to Figures 40 and 41. Figure 40 is a schematic diagram of the lead screw structure in the actuator shown in Figure 3, and Figure 41 is an enlarged schematic diagram of the structure at point D in Figure 40. The lead screw 72 is provided with an oil guide groove 7211, which is recessed from the outer peripheral surface of the lead screw 72 toward the axis of the lead screw 72 and extends along the axial direction of the lead screw 72 to guide lubricating oil to the space between the lead screw and the nut. Specifically, the threaded section 721 is provided with the oil guide groove 7211.

[0465] In this way, the lubricating oil entering the first housing 11 can enter between the threaded section 721 and the nut 13 through the oil guide groove 7211 to lubricate the threaded section 721 and the nut 13. Furthermore, as the rod section and the nut 13 move relative to each other, the lubricating oil can be distributed more evenly on the threaded section 721, thereby improving the smoothness of the relative movement between the threaded section 721 and the nut 13.

[0466] In addition, the lubricating oil can also dissipate heat from the threaded section 721 and the nut 13 to prevent the temperature from being too high and affecting the performance of the threaded section 721 and the nut 13.

[0467] In some examples, the number of oil guide grooves 7211 can be one or more. When there are multiple oil guide grooves 7211, the multiple oil guide grooves 7211 are arranged at circumferential intervals along the threaded section 721.

[0468] In some examples, please refer to Figure 42, which is a structural schematic diagram of the first housing of the first power assembly shown in Figure 9, where a connecting oil hole and an oil outlet are provided. The first housing 73 is provided with a connecting oil hole 738, which connects the internal space of the first housing 11 with the first receiving cavity 731. For example, the connecting oil hole 738 is provided on the first top plate 734 of the first housing 73.

[0469] In this way, the lubricating oil entering the first housing 73 can enter the first housing 73 through the oil hole 738 to lubricate and cool the components located in the first housing 73, such as the first stator 74, the first mover 75, and the first sensor 1B.

[0470] In some examples, the number of connected oil holes 738 can be one or more.

[0471] In some examples, please continue referring to Figure 42. The first housing 73 is provided with a first oil outlet 739. The first oil outlet 739 is provided with a first oil nozzle 73A, which is adapted to connect to the inlet of the circulating oil pump, and the oil inlet 113 is adapted to connect to the outlet of the circulating oil pump. In this way, under the action of the circulating oil pump, lubricating oil can enter the first housing 11 from the oil inlet 113 to lubricate and cool the threaded section 721 and the nut 13. The lubricating oil in the first housing 11 enters the first receiving cavity 731 of the first housing 73 through the connecting oil hole 738 to lubricate and cool the components in the first receiving cavity 731. The lubricating oil in the first receiving cavity 731 flows out from the first oil outlet 73A to the circulating oil pump for recycling.

[0472] In this way, the circulating oil pump, the oil inlet 113, the internal space of the first housing 73, the connecting oil hole 738, the first receiving cavity 731, and the first oil outlet 73A form a circulating oil circuit, which simultaneously lubricates and cools the threaded section 721, the nut 13, and the components in the first receiving cavity 731. It is not necessary to set oil inlet and oil outlet pipes separately for the first housing 11 and the first housing 73, thereby simplifying the oil circuit structure, avoiding the layout of too many pipes, making the structure simpler, more compact in space, and more convenient for maintenance and replacement of lubricating oil.

[0473] In some examples, the first oil outlet 739 may be located on the first enclosure 735 of the first housing 73. Specifically, the first oil outlet 739 may be located at the end of the first enclosure 735 near the transmission box 11A.

[0474] In some examples, the clutch housing 91 and the first housing 73 can be an integral structure. In this case, the third receiving cavity 911 of the clutch housing 91 can communicate with the first receiving cavity 731 of the first housing 73. In this way, the lubricating oil entering the first housing 73 can also enter the third receiving cavity 911 to lubricate and cool the components in the third receiving cavity 911, such as the disengagement / engagement switching assembly 9 and the second sensor 1C.

[0475] In some embodiments, the transmission housing 11A contains lubricating oil, and the transmission component 12A is immersed in the lubricating oil. Thus, the lubricating oil can lubricate and cool the transmission component 12A, thereby improving the smoothness of its operation.

[0476] In some examples, referring further to Figure 29, the transmission housing 11A also includes a first rotary seal 130A and a second rotary seal 140A. The first rotary seal 130A is disposed between the inner wall surface of the second through hole 112A and the lead screw 72 to seal the gap between the inner wall surface of the second through hole 112A and the lead screw 72. Specifically, the first rotary seal 130A is disposed between the inner wall surface of the second through hole 112A and the first transmission section 722.

[0477] In this way, the lubricating oil in the second receiving cavity 116A of the transmission box 11A can be prevented from leaking through the gap between the inner wall of the second through hole 112A and the lead screw 72, and the lubricating oil in the first receiving cavity 731 of the first housing 73 can be prevented from entering the second receiving cavity 116A through the gap between the inner wall of the second through hole 112A and the lead screw 72, so that the lubricating oil in the transmission box 11A can be used solely for lubricating the transmission component 12A, thereby avoiding frequent replacement of the lubricating oil and providing a better lubrication effect.

[0478] In some examples, the first rotary seal 130A can be a sealing ring, a lip seal, etc.

[0479] The second rotary seal 140A is disposed between the inner wall surface of the third through hole 118A and the second rotating shaft 124A to seal the gap between the inner wall surface of the third through hole 118A and the second rotating shaft 124A. This prevents lubricating oil in the second receiving cavity 116A of the transmission housing 11A from leaking through the gap between the inner wall surface of the third through hole 118A and the second rotating shaft 124A, and also prevents lubricating oil in the third receiving cavity 911 of the clutch housing 91 from entering the second receiving cavity 116A through the gap between the inner wall surface of the third through hole 118A and the second rotating shaft 124A. This allows the lubricating oil in the transmission housing 11A to be used solely for lubricating the transmission component 12A, avoiding frequent oil changes and providing better lubrication.

[0480] In some examples, the second rotary seal 140A can be a sealing ring, a lip seal, etc.

[0481] In some other examples, the first rotary seal 130A and the second rotary seal 140A may not be provided, so that the first receiving cavity 731 of the first housing 73 communicates with the second receiving cavity 116A of the transmission box 11A through the gap between the inner wall surface of the second through hole 112A and the lead screw 72. That is, the gap between the lead screw 72 and the inner wall surface of the second through hole 112A forms an oil guiding gap, which connects the second receiving cavity 116A and the first receiving cavity 731.

[0482] Alternatively, the third receiving cavity 911 of the clutch box 91 can be connected to the second receiving cavity 116A of the transmission box 11A through the gap between the inner wall surface of the third through hole 118A and the second rotating shaft 124A.

[0483] At this point, please continue referring to Figure 29. A second oil outlet 150A and a second oil nozzle 160A can be provided on the transmission box 11A. The second oil nozzle 160A is located inside the second oil outlet 150A and is suitable for connecting to the circulating oil pump. In this way, the circulating oil pump, the oil inlet 113, the internal space of the first housing 73, the connecting oil hole 738, the first receiving cavity 731, the second receiving cavity 116A, and the second oil nozzle 160A form a circulating oil circuit, thereby further improving the oil circuit structure.

[0484] In some embodiments, please refer to Figures 43, 44, and 45. Figure 43 is a schematic diagram of the structure of the first sealing gasket in the actuator shown in Figure 3, Figure 44 is a schematic diagram of the structure of the second sealing gasket in the actuator shown in Figure 3, and Figure 45 is a schematic diagram of the structure of the third sealing gasket in the actuator shown in Figure 3. The actuator 10 also includes a first sealing gasket 10A, a second sealing gasket 10B, and a third sealing gasket 10C. The first sealing gasket 10A is disposed between the second housing 22 and the first housing 73 to seal the gap between the second housing 22 and the first housing 73, thereby preventing lubricating oil from leaking from the gap between the second housing 22 and the first housing 73.

[0485] The first sealing gasket 10A is provided with a first clearance hole 101A so that the lead screw 72 can extend into the second housing 22 through the first clearance hole 101A, thereby facilitating the connection between the threaded section 721 of the lead screw 72 and the nut 13.

[0486] The second sealing gasket 10B is disposed between the first housing 73 and the transmission box 11A, and between the clutch box 91 and the transmission box 11A. That is, the first housing 73 and the clutch box 91 are combined as a whole and a second sealing gasket 10B is disposed between them and the transmission box 11A.

[0487] The second sealing gasket 10B is used to seal the gaps between the first housing 73 and the transmission box 11A, and between the clutch box 91 and the transmission box 11A, so as to prevent lubricating oil from leaking from the gaps between the first housing 73 and the transmission box 11A, and between the clutch box 91 and the transmission box 11A.

[0488] The second sealing gasket 10B is provided with a second clearance hole 101B and a third clearance hole 102B. The second clearance hole 101B is used for the lead screw 72 to pass through, so that the lead screw 72 can be connected to the transmission component 12A. The third clearance hole 102B is used for the second rotating shaft 124A to pass through, so that the second rotating shaft 124A can be connected to the disengagement and engagement switching assembly 9.

[0489] The third sealing gasket 10C is placed between the transmission box 11A and the fork arm 4 to prevent lubricating oil from leaking from the gap between the transmission box 11A and the fork arm 4.

[0490] In other embodiments of this application, please refer to FIG46, which is a schematic diagram of another mating relationship between the nut and the first housing provided in an embodiment of this application. The difference between this embodiment and the embodiments shown in FIG2 to FIG45 is that the flange structure 132 of the nut 13 is omitted, and the nut 13 can move relative to the first housing 11 when certain conditions are met.

[0491] Specifically, the nut 13 is disposed on the inner wall surface of the first housing 11. The first component 1 also includes a second pressure plate 14 and a third elastic member 15. The second pressure plate 14 is fixedly connected to the first housing 11 and is located on the side of the nut 13 facing the first power assembly 7. The third elastic member 15 is disposed between the nut 13 and the inner wall surface of the first housing 11 facing away from the first power assembly 7. The third elastic member 15 has a first preload.

[0492] It should be noted that the first preload is less than or equal to the product of the acceleration of the nut 13 when it is stuck and the unsprung mass of the third elastic element 15. In other words, when the impact force from the road surface is greater than the first preload, the nut 13 and the threaded section 721 will stick together and cannot rotate relative to each other. For example, if the sticking acceleration of the nut 13 is 6g and the unsprung mass is 100kg, then the preload of the third elastic element 15 can be 6000N. Alternatively, the preload of the third elastic element 15 can also be less than 6000N.

[0493] In this way, when the impact force of the road excitation is less than the first preload, the road excitation is transmitted to the nut 13. The force generated by the nut 13 on the third elastic member 15 is insufficient to deform the third elastic member 15. At this time, the nut 13 is relatively stationary in the axial direction with the upper housing under the limitation of the third elastic member 15 and the second pressure plate 14, and the third elastic member 15 remains stationary. The nut 13 moves axially relative to the threaded section 721, causing the threaded section 721 to rotate. In this way, the frictional force of the first power assembly 7 and the actuator 10 can be used to dissipate the road excitation energy. At the same time, the relative movement of the first component 1 and the second component 2 will cause the first elastic member 5 to compress and store the road excitation energy. The first elastic member 5 rebounds and releases the energy, driving the nut 13 to move axially in a linear motion and the screw to rotate until the road excitation energy is dissipated.

[0494] Please refer to Figure 47, which is a schematic diagram of the fit between the nut and the first housing when the third elastic element undergoes elastic deformation as shown in Figure 46. When the impact force of the road surface excitation is greater than the first preload, the nut 13 becomes stuck. At this time, the nut 13 and the threaded section 721 are essentially rigidly fixed, that is, the threaded section 721 no longer rotates, but can only move axially, causing the nut 13 to compress the third elastic element 15 axially, thus compressing the third elastic element 15.

[0495] At this time, the first elastic element 5 is also in a compressed state. The compression of the third elastic element 15 and the first elastic element 5 stores the energy of the road excitation, preventing the road excitation from being transmitted to the vehicle body 300. Here, the function of the third elastic element 15 is to store the energy transmitted to the suspension system 100 from the instantaneous impact of the road. After the moment of impact, the nut 13 is no longer stuck, and the threaded section 721 can rotate freely. The third elastic element 15 and the first elastic element 5 drive the nut 13 to move axially, causing the threaded section 721 to rotate. The rotation of the threaded section 721 can be controlled by the first power component 7 or the first power component 7 and the second power component 8 to actively dissipate the energy of the road impact, or the magnetic resistance of the first power component 7 or the first power component 7 and the second power component 8, as well as the friction of the actuator 10, can be used to dissipate the energy of the road impact.

[0496] Without the third elastic element 15, the nut 13 and the first housing 11 are rigidly fixed together via the flange structure 132. Road impacts would then be transmitted through the fork arm 4, transmission box 11A, and first housing 11, via the threaded section 721 to the stuck nut 13. Because the nut 13 is stuck, the road impact would be directly transmitted through the first housing 11 and the tower assembly 3 to the vehicle body 300, affecting the driving stability, ride comfort, and even safety of the vehicle 1000. Therefore, the third elastic element 15 automatically resets the nut 13 when it is stuck, reducing the impact of road excitation on the vehicle body 300 and improving the driving stability, ride comfort, and safety of the vehicle 1000.

[0497] It should be noted that, in order to prevent the first power assembly 7 or the first power assembly 7 and the second power assembly 8 from responding too slowly when controlling the relative stroke of the first component and the second component, the third elastic member 15 should be formed as small as possible. For example, the stroke of the third elastic member 15 can be 20mm-30mm. For instance, the stroke of the third elastic member 15 can be 20mm, 22mm, 25mm, 28mm, 30mm, etc.

[0498] The first preload can be set to 6000N-10000N. For example, the first preload can be 6000N, 6500N, 7000N, 7500N, 8000N, 8500N, 9000N, 9500N, 10000N, etc.

[0499] In some examples, the third elastic element 15 can be a coil spring, a rubber spring, etc.

[0500] In some examples, please refer to Figure 48, which is a structural schematic diagram of the nut shown in Figure 46. One of the nut 13 and the first housing 11 is provided with a fourth limiting boss 133, and the other of the nut 13 and the first housing 11 is provided with a fourth limiting groove (not shown in the figure). The fourth limiting boss 133 is located within the fourth limiting groove and can move axially along the lead screw 72 within the fourth limiting groove. In this way, the nut 13 can be circumferentially rotated by the cooperation of the fourth limiting boss 133 and the fourth limiting groove, thus ensuring the stability of the relative movement between the first component and the second component.

[0501] In some examples, please continue to refer to Figure 46, the first component 1 is also provided with a buffer pad 16, which is disposed inside the first housing 11 and located on the side of the third elastic member 15 opposite to the nut 13. The buffer pad 16 is used to buffer the impact force of the road surface to reduce the impact on the vehicle body 300 and ensure the stability of the vehicle body 300.

[0502] In some examples, the material of the cushioning pad 16 can be polyurethane, cushioning rubber, etc. This application does not specifically limit this.

[0503] In some embodiments of this application, please refer to Figures 49 to 53. Figure 49 is a structural schematic diagram of another actuator provided in an embodiment of this application. Figure 50 is a cross-sectional structural schematic diagram of the actuator shown in Figure 49. Figure 51 is another cross-sectional structural schematic diagram of the actuator shown in Figure 49. Figure 52 is a schematic diagram of the arrangement of the first power component, the second power component, the separation and engagement switching component, and the transmission component in the actuator shown in Figure 49. Figure 53 is an enlarged schematic diagram of the structure at point E in Figure 51.

[0504] The difference between this embodiment and the embodiments shown in Figures 2 to 48 is that in this embodiment, the first stator 74 and the first mover 75 of the first power assembly 7 are both arranged off-axis from the lead screw 72, and the second output shaft 84 of the second power assembly 8 is also arranged off-axis from the lead screw 72. Based on this, the arrangement of the separation and engagement switching assembly 9 and the transmission component 12A is also changed.

[0505] The transmission assembly includes a fourth gear 125A, a fifth gear 126A, a sixth gear 127A, and a seventh gear 128A. The fifth gear 126A is fixedly connected to the lead screw 72, and the disengagement / engagement switching assembly 9 is connected between the fourth gear 125A and the lead screw 72. The sixth gear 127A is connected to the first power assembly 7 and meshes with the fifth gear 126A. The seventh gear 128A is connected to the second power assembly 8 and meshes with the fourth gear 125A.

[0506] Specifically, the transmission assembly 1A also includes a second rotating shaft 124A. The second rotating shaft 124A is rotatably connected within the transmission housing 11A and is coaxially arranged with the lead screw 72. A fourth gear 125A is fixedly connected to the second rotating shaft 124A and is coaxially arranged with the second rotating shaft 124A. A fifth gear 126A is fixedly connected to the lead screw 72 and is coaxially arranged with the lead screw 72.

[0507] The separation / engagement switching assembly body 92 is disposed between the lead screw 72 and the second rotating shaft 124A. Specifically, one of the first rotating portion 921 and the second rotating portion 922 of the separation / engagement switching assembly body 92 is fixedly connected to the lead screw 72, and the other of the first rotating portion 921 and the second rotating portion 922 is fixedly connected to the second rotating shaft 124A. The structure of the separation / engagement switching assembly body 92 remains unchanged.

[0508] The first power assembly 7 includes a first stator 74, a first mover 75, and a first output shaft 79. The first stator 74 is fixed inside the first housing 73 and is arranged around the first mover 75. The first mover 75 surrounds the first output shaft 79 and is fixedly connected to the first output shaft 79. A sixth gear 127A is fixedly connected to the first output shaft 79 and is coaxially arranged with the first output shaft 79. The sixth gear 127A meshes with a fifth gear 126A.

[0509] The second power assembly 8 includes a second stator 82, a second mover 83, and a second output shaft 84. The second stator 82 is fixed inside the second housing 81 and is arranged around the second mover 83. The second mover 83 surrounds the second output shaft 84 and is fixedly connected to the second output shaft 84. A seventh gear 128A is fixedly connected to the second output shaft 84 and is coaxially arranged with the second output shaft 84. The seventh gear 128A meshes with a fourth gear 125A.

[0510] In this way, in the first operating mode, the actuator 10 is in an open state, and the second rotating shaft 124A is disconnected from the lead screw 72 via the open / closed switching assembly 9. The first power assembly 7 operates, and the first output shaft 79 transmits driving force to the lead screw 72 through the sixth gear 127A and the fifth gear 126A, thereby pushing the first component 1 to move relative to the second component 2. Thus, in the first operating mode, the first power assembly 7 only drives the sixth gear 127A and the fifth gear 126A to rotate, while the fourth gear 125A and the seventh gear 128A do not rotate, thereby reducing the rotational inertia of the first power assembly 7, thereby improving the response speed of the suspension system 100 and improving the overall vehicle motion control effect.

[0511] In the second operating mode, the actuator 10 is in a coupled state with the disengagement / engagement switching assembly 9, and the second rotating shaft 124A is coupled to the lead screw 72 through the disengagement / engagement switching assembly 9. When the first power assembly 7 is working, the first output shaft 79 transmits driving force to the lead screw 72 through the sixth gear 127A and the fifth gear 126A. At the same time, the second power assembly 8 is working, and the second output shaft 84 transmits driving force to the lead screw 72 through the seventh gear 128A and the fourth gear 125A, thereby causing the lead screw 72 to push the first component 1 to move relative to the second component 2.

[0512] Based on this, in some examples, the third mover 12B of the first sensor can also be located on the sixth gear 127A. Correspondingly, the third stator 11B of the first sensor can be located inside the transmission box and fixed to the transmission box.

[0513] In other embodiments of this application, please refer to Figures 54 to 58. Figure 54 is a structural schematic diagram of another actuator provided in the embodiment of this application. Figure 55 is a cross-sectional structural schematic diagram of the actuator shown in Figure 54. Figure 56 is another cross-sectional structural schematic diagram of the actuator shown in Figure 54. Figure 57 is a schematic diagram of the arrangement of the first power component, the second power component, the separation and engagement switching component, and the transmission component in the actuator shown in Figure 54. Figure 58 is an enlarged schematic diagram of the structure at point F in Figure 56.

[0514] The difference between this embodiment and the embodiments shown in Figures 2 to 53 is that, in this embodiment, the first stator 74 and the first mover 75 of the first power assembly 7 are both arranged off-axis from the lead screw 72, and the second output shaft 84 of the second power assembly 8 is also arranged off-axis from the lead screw 72. Based on this, the arrangement of the separation and engagement switching assembly 9 and the transmission component 12A is also changed.

[0515] The transmission assembly 1A includes an eighth gear 129A, a ninth gear 1210A, and a tenth gear 1211A. A disengagement / engagement switching assembly 9 is connected between the eighth gear 129A and the second power assembly 8. The ninth gear 1210A is fixedly connected to the lead screw 72 and meshes with the eighth gear 129A. The tenth gear 1211A is connected to the first power assembly 7 and meshes with the ninth gear 1210A.

[0516] Specifically, the second power assembly 8 includes a second stator 82, a second mover 83, and a second output shaft 84. The second stator 82 is fixed inside the second housing 81 and is arranged around the second mover 83. The second mover 83 surrounds the second output shaft 84 and is fixedly connected to the second output shaft 84.

[0517] The transmission component 12A also includes a second rotating shaft 124A. The second rotating shaft 124A is rotatably connected inside the transmission housing 11A and is coaxially arranged with the second output shaft 84. The axis of the second output shaft 84 is parallel to the axis of the lead screw 72, i.e., they are arranged opposite axes.

[0518] The engagement / disengagement switching assembly 9 is disposed between the second output shaft 84 and the second rotating shaft 124A. Specifically, one of the first rotating portion 921 and the second rotating portion 922 of the engagement / disengagement switching assembly body 92 is fixedly connected to the second output shaft 84, and the other of the first rotating portion 921 and the second rotating portion 922 is fixedly connected to the second rotating shaft 124A. The structure of the engagement / disengagement switching assembly body 92 remains unchanged. For example, the engagement / disengagement switching assembly body 92 can be disposed within the transmission housing 11A, i.e., a separate clutch housing 91 is not required.

[0519] The eighth gear 129A is fixedly connected to the second rotating shaft 124A. The ninth gear 1210A is fixedly connected to the lead screw 72, and the eighth gear 129A meshes with the ninth gear 1210A.

[0520] The first power assembly 7 includes a first stator 74, a first mover 75, and a first output shaft 79. The first stator 74 is fixed inside the first housing 73 and is disposed around the first mover 75. The first mover 75 surrounds the first output shaft 79 and is fixedly connected to the first output shaft 79. The tenth gear 1211A is fixedly connected to the first output shaft 79 and meshes with the ninth gear 1210A.

[0521] In this way, in the first operating mode, the actuator 10 is in the disconnected state, and the second rotating shaft 124A is disconnected from the second output shaft 84 through the disconnection and engagement switching assembly 9. The first power assembly 7 is working, and the first output shaft 79 transmits driving force to the lead screw 72 through the tenth gear 1211A and the ninth gear 1210A, thereby driving the first component 1 to move relative to the second component 2.

[0522] In the second operating mode, the actuator 10 is in a coupled state with the disengagement / engagement switching assembly 9, and the second rotating shaft 124A is coupled to the second output shaft 84 through the disengagement / engagement switching assembly 9. When the first power assembly 7 is working, the first output shaft 79 transmits driving force to the lead screw 72 through the tenth gear 1211A and the ninth gear 1210A. At the same time, the second power assembly 8 is working, and the second output shaft 84 transmits driving force to the lead screw 72 through the disengagement / engagement switching assembly 9, the eighth gear 129A, and the ninth gear 1210A, thereby causing the lead screw 72 to push the first component 1 to move relative to the second component 2.

[0523] Based on this, in some examples, the third mover 12B of the first sensor can also be located on the tenth gear 1211A. Correspondingly, the third stator 11B of the first sensor can be located inside the transmission box and fixed to the transmission box.

[0524] In some other embodiments of this application, please refer to Figures 59 to 63. Figure 59 is a structural schematic diagram of another actuator provided in the embodiment of this application. Figure 60 is a cross-sectional structural schematic diagram of the actuator shown in Figure 59. Figure 61 is another cross-sectional structural schematic diagram of the actuator shown in Figure 59. Figure 62 is a schematic diagram of the arrangement of the first power component, the second power component, the separation and engagement switching component and the transmission component in the actuator shown in Figure 59. Figure 63 is an enlarged schematic diagram of the structure at point G in Figure 61.

[0525] The difference between this embodiment and the embodiments shown in Figures 2 to 58 is that in this embodiment, the transmission component 12A adopts a bevel gear meshing transmission method. Based on this, the configuration of the separation / engagement switching assembly 9 and the transmission component 12A is also changed.

[0526] Specifically, the first power assembly 7 includes a first stator 74, a first mover 75, and a first output shaft 79. The first stator 74 is fixed inside the first housing 73 and is disposed around the first mover 75. The first mover 75 surrounds the first output shaft 79 and is fixedly connected to the first output shaft 79.

[0527] The second power assembly 8 includes a second stator 82, a second mover 83, and a second output shaft 84. The second stator 82 is fixed inside the second housing 81 and is arranged around the second mover 83. The second mover 83 surrounds the second output shaft 84 and is fixedly connected to the second output shaft 84.

[0528] The transmission assembly 1A includes a second rotating shaft 124A, a first bevel gear 1212A, a second bevel gear 1213A, and a third bevel gear 1214A. The second rotating shaft 124A is fixedly connected inside the transmission housing and is perpendicular to the lead screw 72. The first bevel gear 1212A is fixedly connected to the second rotating shaft 124A. The second bevel gear 1213A is fixedly connected to the first output shaft 79 and meshes with the first bevel gear 1212A. The third bevel gear 1214A is fixedly connected to the lead screw 72 and meshes with the first bevel gear 1212A.

[0529] The engagement / disengagement switching assembly 9 is disposed between the second rotating shaft 124A and the second output shaft 84. Specifically, one of the first rotating portion 921 and the second rotating portion 922 of the engagement / disengagement switching assembly body 92 is fixedly connected to the second output shaft 84, and the other of the first rotating portion 921 and the second rotating portion 922 is fixedly connected to the second rotating shaft 124A. The structure of the engagement / disengagement switching assembly body 92 remains unchanged. For example, the engagement / disengagement switching assembly body 92 can be disposed within the transmission housing 11A, i.e., a separate clutch housing 91 is not required.

[0530] In this way, in the first operating mode, the actuator 10 is in the disconnected state, and the second rotating shaft 124A is disconnected from the second output shaft 84 through the disconnection and engagement switching assembly 9. The first power assembly 7 operates, and the first output shaft 79 transmits the driving force through the second bevel gear 1213A to the first bevel gear 1212A, and then to the third bevel gear 1214A, so that the third bevel gear 1214A drives the lead screw 72 to rotate, thereby pushing the first component 1 to move relative to the second component 2.

[0531] In the second operating mode, the actuator 10 is in a coupled state with the disengagement / engagement switching assembly 9, and the second rotating shaft 124A is coupled to the second output shaft 84 through the disengagement / engagement switching assembly 9. When the first power assembly 7 is working, the first output shaft 79 transmits driving force through the second bevel gear 1213A to the first bevel gear 1212A, and then to the third bevel gear 1214A, so that the third bevel gear 1214A drives the lead screw 72 to rotate. At the same time, the second power assembly 8 is working, and the second output shaft 84 transmits driving force through the disengagement / engagement switching assembly 9, the first bevel gear 1212A, and the third bevel gear 1214A to the lead screw 72, so that the lead screw 72 rotates, thereby causing the lead screw 72 to push the first component 1 to move relative to the second component 2.

[0532] Based on this, in some examples, the third mover 12B of the first sensor can also be disposed on the second bevel gear 1213A. Correspondingly, the third stator 11B of the first sensor can be disposed inside the transmission box and fixed to the transmission box.

[0533] In some embodiments, the rated power of the first power assembly 7 is greater than or equal to the rated power of the second power assembly 8. This further reduces the rotational inertia of the first power assembly 7 and the second power assembly 8, thereby improving the response speed of the suspension system 100.

[0534] For example, the rated power of the first power component 7 is less than or equal to 3.5KW. The sum of the rated power of the first power component 7 and the second power component 8 is greater than or equal to 6KW. In this case, the rated power of the second power component 8 can be greater than or equal to 2.5KW and less than or equal to 3.5KW. For example, the rated power of the second power component 8 can be 2.5KW, 2.8KW, 3KW, 3.2KW, 3.5KW, etc.

[0535] For example, the actuator requires a total operating power of 6 kW under extreme conditions. That is, in related technologies, the rated power of a single motor needs to reach 6 kW. However, in this application, only the sum of the rated power of the first power assembly 7 and the second power assembly 8 needs to reach 6 kW.

[0536] Specifically, the rated power of the first power component 7 is 3.5KW, and the rated power of the second power component 8 is 2.5KW. Thus, neither the first nor the second power component needs to reach its rated power requirement under extreme operating conditions. This allows the moments of inertia of both the first and second power components 7 and 8 to be less than those of motors in related technologies. Compared to related technologies, this improves the response speed of the first and second power components 7 and 8, facilitates their control, and enhances the overall vehicle motion control performance.

[0537] In some other embodiments, the rated power of the first power component 7 is less than the rated power of the second power component 8.

[0538] For example, the rated power of the first power component 7 is less than or equal to 2.5KW. The sum of the rated power of the first power component 7 and the second power component 8 is greater than or equal to 6KW. In this case, the rated power of the second power component 8 can be greater than or equal to 3.5KW. For example, the rated power of the second power component 8 can be 3.5KW, 4KW, 4.5KW, 5KW, 5.5KW, 6KW, 6.5KW, 7KW, etc.

[0539] For example, the actuator requires a total operating power of 6 kW under extreme conditions. That is, in related technologies, the rated power of a single motor needs to reach 6 kW. However, in this application, only the sum of the rated power of the first power assembly 7 and the second power assembly 8 needs to reach 6 kW.

[0540] Specifically, the rated power of the first power component 7 is 2KW, and the rated power of the second power component 8 is 4KW. Thus, neither the first nor the second power component needs to reach its rated power requirement under extreme operating conditions. This allows the moments of inertia of both the first and second power components 7 and 8 to be less than those of motors in related technologies. Compared to related technologies, this improves the response speed of the first and second power components 7 and 8, facilitates their control, and enhances the overall vehicle motion control performance.

[0541] In some other embodiments, the rated power of the first power component 7 is less than the rated power of the second power component 8, and in the first operating mode, the first component 1 and the second component 2 are moved relative to each other only through the first power component 7, and in the second operating mode, the first component 1 and the second component 2 are moved relative to each other only through the second power component 8.

[0542] Specifically, a separation / engagement switching component, named the second separation / engagement switching component, can also be provided between the first power assembly 7 and the lead screw 72. In this way, in the first operating mode, the second separation / engagement switching component is in a coupled state, so that the first power assembly 7 is coupled to the lead screw 72, and the separation / engagement switching component 9 is in a disconnected state, so that the second power assembly 8 is disconnected from the lead screw 72. This allows the lead screw 72 to rotate solely through the first power assembly 7, thereby driving the relative movement of the first component 1 and the second component 2.

[0543] In the second working mode, the second separation and engagement switching component is in the disconnected state so that the first power component 7 is disconnected from the lead screw 72, and the separation and engagement switching component 9 is in the coupled state so that the second power component 8 is coupled to the lead screw 72, so that the lead screw 72 is driven to rotate only by the second power component 8, thereby driving the first component 1 and the second component 2 to move relative to each other.

[0544] At this time, the rated power of the second power component 8 can be less than or equal to the rated power of the motor in the related art. In this way, it can be ensured at least in the first working mode that the rated power of the first power component 7 is less than the rated power of the motor in the related art, so that the first power component 7 has a smaller moment of inertia, thereby improving the response speed and control effect of the actuator 10 in the first working mode.

[0545] For example, the rated power of the first power component 7 can be less than or equal to 3.5KW. For instance, the rated power of the first power component 7 can be 3.5KW, 3KW, 2.5KW, 2KW, 1.5KW, 1KW, etc.

[0546] The rated power of the second power component 8 can be greater than or equal to 6KW. For example, the rated power of the second power component 8 can be 6KW, 6.5KW, 7W, 7.5W, 8KW, 8.5KW, 9KW, etc.

[0547] For example, the actuator requires a total operating power of 6 kW under extreme conditions. That is, in related technologies, the rated power of a single motor needs to reach 6 kW. However, in this application, only the sum of the rated power of the first power assembly 7 and the second power assembly 8 needs to reach 6 kW.

[0548] Specifically, the rated power of the first power component 7 is 3.5KW, and the rated power of the second power component 8 is 6KW. Thus, the first power component 7 can meet the needs under common operating conditions, and it does not need to reach the rated power requirements under extreme operating conditions. This allows the rotational inertia of the first power component 7 to be less than that of the motors in related technologies. Therefore, compared to related technologies, the response speed of the first power component 7 can be improved in the first operating mode, and it is easier to control the first power component 7, thereby improving the overall vehicle motion control effect.

[0549] In some embodiments, the second power assembly 8 can be an asynchronous motor, meaning it can simultaneously function as a drive motor and a generator with adjustable power output. Thus, when the first power assembly 7 is de-energized, the impact force from the road surface is transmitted to the lead screw 72 and nut 13, causing them to move relative to each other. This relative movement of the lead screw 72 and nut 13 can rotate the rotor of the second power assembly 8 via the disengagement / engagement switching assembly 9, thereby enabling the second power assembly 8 to generate electricity. During the power generation process, the second power assembly 8 can dampen the relative movement of the lead screw 72 and nut 13, thereby hindering their relative movement and further ensuring the stability of the vehicle body.

[0550] It should be noted that during the process of the second power component 8 acting as a generator to dampen the relative movement of the lead screw and nut, the separation and engagement switching component 9 is in a coupled state. Furthermore, the second power component 8 is not working, but the power generation of the second power component 8 can be adjusted by controlling the magnitude of the magnetic field of the second power component 8 through an external power source, thereby adjusting the damping magnitude of the second power component 8.

[0551] Furthermore, the aforementioned second power assembly 8, acting as a generator to dampen the relative movement of the lead screw and nut, is applicable in three scenarios. The first scenario is when the rated power of the first power assembly 7 is greater than or equal to the rated power of the second power assembly 8. The second scenario is when the rated power of the first power assembly 7 is less than the rated power of the second power assembly 8. The third scenario is that in the first operating mode, only the first power assembly 7 drives the first component 1 and the second component 2, and in the second operating mode, only the second power assembly 8 drives the first component 1 and the second component 2.

[0552] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An actuator comprising: a first component (1) and a second component (2), and a first power assembly (7) and a second power assembly (8); the actuator having a first operating mode and a second operating mode, in the first operating mode, the first power assembly (7) drives the first component (1) and the second component (2) to move relatively; in the second operating mode, at least the second power assembly (8) of the first power assembly (7) and the second power assembly (8) drives the first component (1) and the second component (2) to move relatively.

2. The actuator according to claim 1, in the second operating mode, the first power assembly (7) and the second power assembly (8) both drive the first component (1) and the second component (2) to move relatively.

3. The actuator according to claim 2, further comprising: a decoupling and coupling switching assembly (9) disposed between the first power assembly (7) and the second power assembly (8); in the first operating mode, the decoupling and coupling switching assembly (9) decouples the first power assembly (7) and the second power assembly (8), the first power assembly (7) outputs driving force to drive the first component (1) and the second component (2) to move relatively; in the first operating mode, the decoupling and coupling switching assembly (9) decouples and couples the first power assembly (7) and the second power assembly (8), the first power assembly and the second power assembly both output driving force to drive the first component (1) and the second component (2) to move relative.

4. The actuator of claim 3, wherein, the first power assembly (7) is in driving connection with the first component (1); in the first operating mode, the first power assembly (7) outputs driving force to the first component (1) to drive the first component (1) and the second component (2) to move relatively; the first power assembly (7) and the second power assembly (8) both output driving force to the first component (1) to drive the first component (1) and the 5. The actuator of claim 3, wherein, the first power assembly (7) and the second power assembly (8) are both rotary driving assemblies.

6. The actuator according to claim 5, further comprising: a motion conversion assembly adapted to convert rotary motion output by the first power assembly (7) in the first operating mode and rotary motion output by the first power assembly (7) and the second power assembly (8) in the second operating mode into relative linear movement between the first component (1) and the second component (2).

7. The actuator of claim 6, wherein, the motion conversion assembly comprises a screw rod (72) and a nut (13) connected to the screw rod (72); In the first working mode, the first power assembly (7) outputs power to one of the lead screw (72) and the nut (13), and in the second working mode, the first power assembly (7) and the second power assembly (8) output power to one of the lead screw (72) and the nut (13); The other of the lead screw (72) and the nut (13) is connected to one of the first component (1) and the second component (2) to drive one of the first component (1) and the second component (2) to move linearly relative to the other of the first component (1) and the second component (2).

8. The actuator of claim 7, wherein, The first component (1) and the second component (2) form a first component, and at least one of the first power component (7) and the second power component (8) is located on the periphery of the first component.

9. The actuator of claim 8, wherein, The first power assembly (7) is arranged along the first assembly in a first direction, and the second power assembly (8) is located on the periphery of the first assembly; The first direction is parallel to the relative movement direction of the first component (1) and the second component (2).

10. The actuator of claim 9, wherein, A transmission component (1A) is provided between the first power component (7) and the second power component (8), and the separation and engagement switching component (9) is provided between the transmission component (1A) and the second power component (8).

11. The actuator of claim 10, wherein, The transmission assembly (1A) is a gear transmission assembly (1A).

12. The actuator of claim 11, wherein, The transmission assembly (1A) includes a first gear (121A), a third gear (123A), and at least one second gear (122A) located between the first gear (121A) and the third gear (123A); The first gear (121A) is connected to the first power assembly (7), and the second gear (122A) is connected to the disengagement and engagement switching assembly (9). The first gear (121A), the at least one second gear (122A), and the third gear (123A) mesh sequentially.

13. The actuator of claim 11, wherein, The transmission assembly (1A) includes: Fourth gear (125A); The fifth gear (126A) is fixedly connected to the lead screw (72), and the separation and engagement switching assembly (9) is connected between the fourth gear (125A) and the lead screw (72). The sixth gear (127A) is connected to the first power assembly (7) and meshes with the fifth gear (126A); The seventh gear (128A) is connected to the second power assembly (8) and meshes with the fourth gear (125A).

14. The actuator of claim 11, wherein, The transmission assembly (1A) includes: The eighth gear (129A) is connected between the eighth gear (129A) and the second power assembly (8). The ninth gear (1210A) is fixedly connected to the lead screw (72) and meshes with the eighth gear (129A); The tenth gear (1211A) is connected to the first power assembly (7) and meshes with the ninth gear (1210A).

15. The actuator of claim 11, wherein, The transmission assembly (1A) includes: The first bevel gear (1212A) is connected to the second power assembly (8) by the separation and engagement switching component (9). The second bevel gear (1213A) is connected to the first power assembly (7) and meshes with the first bevel gear (1212A); The third bevel gear (1214A) is fixedly connected to the lead screw (72) and meshes with the first bevel gear (1212A).

16. The actuator of claim 10, wherein, The separation and engagement switching component (9) includes: A first rotating portion (921) and a second rotating portion (922), one of the first rotating portion (921) and the second rotating portion (922) being connected to a second power assembly (8), and the other of the first rotating portion (921) and the second rotating portion (922) being connected to the transmission assembly (1A); At least a portion of the second rotating portion (922) is movable along the arrangement direction of the first rotating portion (921) and the second rotating portion (922) to couple or separate the second rotating portion (922) from the first rotating portion (921).

17. The actuator of claim 16, wherein, The second rotating portion (922) includes a guide seat (9222) and a clutch (9221) connected to the guide seat (9222). The clutch (9221) is movable relative to the guide seat (9222) along the arrangement direction of the first rotating portion (921) and the second rotating portion (922) to couple or separate from the first rotating portion (921).

18. The actuator of claim 17, wherein, The separation and engagement switching assembly (9) further includes a drive member (93) for driving the clutch member (9221) to move so that the clutch member (9221) is separated from or coupled to the first rotating part (921).

19. The actuator of claim 18, wherein, The driving element (93) includes a driving coil (931), and the clutch element (9221) includes a magnetic element.

20. The actuator of claim 17, wherein, The second rotating part (922) further includes a second elastic element (9223), which is disposed between the clutch (9221) and the guide seat (9222). In the second working mode, the second elastic element (9223) generates an elastic restoring force on the clutch (9221) away from the first rotating part (921).

21. The actuator of claim 16, wherein, The separation and engagement switching assembly (9) preferably includes a clutch box (91), the clutch box (91) is provided with a third receiving cavity (911), and the first rotating part (921) and the second rotating part (922) are disposed in the third receiving cavity (911); The clutch box (91) is provided with a second threading hole (913) communicating with the third receiving cavity (911). The wire harness of the first rotating part (921) and / or the wire harness of the second rotating part (922) are led out to the outside of the clutch box (91) through the second threading hole (913).

22. The actuator of claim 7, wherein, The lead screw (72) includes a threaded section (721) and a first transmission section (722). The first transmission section (722) is connected to the first power assembly (7). The threaded section (721) is connected to the nut (13). The nut (13) is fixedly connected to the first component (1).

23. The actuator of claim 22, wherein, The first power assembly (7) includes: A first housing (73) is provided with a first receiving cavity (731); The first stator (74) is disposed in the first receiving cavity (731) and is fixedly connected to the first housing (73); The first mover (75) is located in the first receiving cavity (731) and can rotate relative to the first stator (74). The first mover (75) is fixedly connected to the lead screw (72).

24. The actuator of claim 23, wherein, The first power assembly (7) further includes a bushing assembly (76), which is disposed between the first mover (75) and the lead screw (72) to realize the connection between the first mover (75) and the lead screw (72).

25. The actuator of claim 24, wherein, The bushing assembly (76) includes a first bushing (761) and a second bushing (762) that are separately arranged, and the first bushing (761) and the second bushing (762) are arranged along the axial direction of the lead screw (72).

26. The actuator of claim 25, wherein, The first bushing (761) includes a first sleeve portion (7611) and a first flange portion (7612). The first sleeve portion (7611) is disposed around the first transmission section (722). The first flange portion (7612) is disposed around the first sleeve portion (7611) and is located on the side of the first stator (74) facing the threaded section (721). The first flange portion (7612) is fixedly connected to the first mover (75). And / or, the second bushing (762) includes a second sleeve portion (7621) and a second flange portion (7622), the second sleeve portion (7621) being disposed around the first drive section (722); the second flange portion (7622) being disposed around the second sleeve portion (7621) and located on the side of the first mover (75) opposite to the threaded section (721), the second flange portion (7622) being fixedly connected to the first mover (75).

27. The actuator of claim 7, wherein, The actuator also includes a first sensor (1B) for detecting the rotational speed of the first power assembly (7).

28. The actuator of claim 27, wherein, The first power assembly (7) includes: A first housing (73) is provided with a first receiving cavity (731); The first stator (74) is disposed in the first receiving cavity (731) and is fixedly connected to the first housing (73); The first moving part (75) is disposed in the first receiving cavity (731) and can rotate relative to the first stator (74). The first moving part (75) is fixedly connected to the lead screw (72). The first sensor (1B) includes a third stator (11B) and a third mover (12B) that are rotatable relative to each other. One of the third stator (11B) and the third mover (12B) is fixedly connected relative to the first housing (73), and the other of the third stator (11B) and the third mover (12B) is fixedly connected relative to the lead screw (72).

29. The actuator of claim 28, wherein, The first power assembly (7) further includes a bushing assembly (76), which is disposed between the first mover (75) and the lead screw (72) to realize the connection between the first mover (75) and the lead screw (72); The third mover (12B) is arranged around the lead screw (72) and fixedly connected to the bushing assembly (76), and the third stator (11B) is arranged on the outer periphery of the third mover (12B).

30. The actuator of claim 29, wherein, One of the bushing assembly (76) and the third mover (12B) is provided with a second positioning groove (763), and the other of the bushing assembly (76) and the third mover (12B) is provided with a second positioning protrusion (121B); the second positioning groove (763) is recessed radially along the lead screw (72), and the second positioning protrusion (121B) is accommodated in the second positioning groove (763).

31. The actuator according to claim 29 further includes a transmission assembly (1A) connected between the disengagement / engagement switching assembly (9) and the first power assembly (7); The transmission assembly (1A) includes a transmission housing (11A) connected to the side of the first housing (73) opposite to the threaded section (721); the third mover (12B) is fixedly connected to the transmission housing (11A).

32. The actuator of claim 31, wherein, The transmission box (11A) is provided with a second mounting groove (111A), which is recessed from the surface of the transmission box (11A) toward the threaded section (721) in a direction opposite to the threaded section (721), and the third stator (11B) is provided in the second mounting groove (111A).

33. The actuator of claim 32, wherein, The transmission box (11A) is provided with a first protrusion (120A), which protrudes from the surface of the transmission box (11A) toward the threaded section (721) into the first receiving cavity (731), and the second mounting groove (111A) is provided on the first protrusion (120A).

34. The actuator of claim 33, wherein, The first sensor (1B) further includes a first terminal box (14B), which is connected to the third stator (11B). The first terminal box (14B) is provided with a first wire harness (141B), which is electrically connected to the third stator (11B) and is suitable for external power supply.

35. The actuator of claim 34, wherein, The first protrusion (120A) is provided with a clearance notch (1201A) that communicates with the second mounting groove (111A), and the first outlet box (14B) is snapped into the clearance notch (1201A).

36. The actuator of claim 34, wherein, The first housing (73) is provided with a first wire hole (736) communicating with the first receiving cavity (731), and the first wire harness (141B) is led out to the outside of the first housing (73) through the first wire hole (736).

37. The actuator of claim 2 wherein, The first component (1) includes a first housing (11), and the second component (2) includes a second housing (22); The second housing (22) is fixedly connected to the first power assembly (7), a portion of the first housing (11) is located inside the second housing (22), and the first housing (11) is movable relative to the second housing (22).

38. The actuator of claim 37, wherein, A first sliding component (23) is provided between the first housing (11) and the second housing (22). The first sliding component (23) is used to reduce the frictional force when the first housing (11) and the second housing (22) move relative to each other.

39. The actuator of claim 38, wherein, The first sliding component (23) and the first housing (11) are clearance fit; and / or the first sliding component (23) and the second housing (22) are interference fit.

40. The actuator of claim 38, wherein, The first sliding component (23) is a sliding bearing, a linear bearing, or a ball spline.

41. The actuator of claim 38, wherein, The second component (2) further includes a first limiting boss (24), which is connected to the inner wall of the second housing (22) and located on the side of the first sliding assembly (23) opposite to the first power assembly (7) to axially limit the first sliding assembly (23).

42. The actuator of claim 41, wherein, The second component (2) further includes a second limiting boss (25), which is connected to the inner wall of the second housing (22) and located on the side of the first sliding assembly (23) facing the first power assembly (7) to axially limit the first sliding assembly (23).

43. The actuator of claim 41, wherein, The second housing (22) is also provided with a sealing groove (221), which is located on the side of the first limiting boss (24) opposite to the first sliding assembly (23); A sealing element (222) is provided in the sealing groove (221), and the sealing element (222) is used to seal the gap between the second housing (22) and the first housing (11).

44. The actuator of claim 38, wherein, The second component (2) further includes a second sliding assembly (26), which is fixedly connected inside the second housing (22) and located on the side of the first sliding assembly (23) facing the first power assembly (7). The second sliding assembly (26) is used to reduce the friction between the first housing (11) and the second housing (22).

45. The actuator of claim 44, wherein, The first power assembly (7) includes a first housing (73), the first housing (73) is provided with a second protrusion (737), the second protrusion (737) protrudes from one side surface of the first housing (73) toward the second housing (22) into the second housing (22); The second protrusion (737) is located on the side of the second sliding assembly (26) facing the first housing (73) and is used to axially limit the second sliding assembly (26).

46. The actuator of claim 45, wherein, The second sliding component (26) contacts the first sliding component (23).

47. The actuator of claim 45, wherein, The second component (2) further includes a second limiting boss (25), which is connected to the inner wall surface of the second housing (22) and located between the first sliding component (23) and the second sliding component (26) to axially limit the second sliding component (26).

48. The actuator of claim 45, wherein, The second component (2) further includes a third limiting boss (27), which is connected to the inner wall surface of the second housing (22) and located on the side of the second sliding assembly (26) facing the first housing (73) to axially limit the second sliding assembly (26).

49. The actuator of claim 44, wherein, The second sliding assembly (26) includes a plurality of sliding members (261) arranged opposite to each other along a second direction. The sliding members (261) are fixedly connected to the inner wall surface of the second housing (22), wherein the second direction is perpendicular to the relative movement direction of the first component (1) and the second component (2).

50. The actuator of claim 49, wherein, The sliding member (261) has a plate-like structure.

51. The actuator of claim 49, wherein, The first housing (11) is provided with a third protrusion (111), which protrudes from the outer surface of the first housing (11) in a direction opposite to the inner surface of the first housing (11); Along the second direction, the third protrusion (111) has two opposing sliding planes (1111), one of which slides in cooperation with one of the sliders (261).

52. The actuator of claim 51, wherein, The third protrusion (111) is embedded with a plurality of balls (1112), which are rotatable relative to the third protrusion (111) and in contact with the slider (261).

53. The actuator of claim 49, wherein, The second component (2) further includes two second limiting grooves (28) arranged opposite each other along the second direction, and one of the sliding members (261) is engaged in one of the second limiting grooves (28).

54. The actuator of claim 7 wherein, The first component (1) includes a first housing (11), and the second component (2) includes a second housing (22); a portion of the first housing (11) is located within the second housing (22), and the first housing (11) is movable relative to the second housing (22); The first housing (11) is provided with an oil inlet (112) communicating with the interior of the first housing (11), and the oil inlet (112) is adapted to connect to a circulating oil pump.

55. The actuator of claim 54, wherein, The first component (1) further includes an oil inlet (113), which is connected to the oil inlet (112) and is adapted to connect to the circulating oil pump.

56. The actuator of claim 54, wherein, The oil inlet (112) extends from the side surface of the first housing (11) opposite to the first power assembly (7) into the interior of the first housing (11).

57. The actuator of claim 54, wherein, The lead screw (72) is provided with an oil guide groove (7211), which is recessed from the outer peripheral surface of the lead screw (72) toward the axis of the lead screw (72) and extends along the axial direction of the lead screw (72) to guide lubricating oil to the space between the lead screw (72) and the nut (13).

58. The actuator of claim 54, wherein, The first power assembly (7) includes a first housing (73), which is connected to the second housing (22); The first housing (73) is provided with a first receiving cavity (731) and a communicating oil hole (738), the communicating oil hole (738) connecting the internal space of the first housing (11) with the first receiving cavity (731).

59. The actuator according to claim 58 further includes a first sealing gasket (10A) disposed between the second housing (22) and the first housing (73).

60. The actuator of claim 58, wherein, The first housing (73) is provided with a first oil outlet (739), which is adapted to be connected to the circulating oil pump.

61. The actuator of claim 60, wherein, The first oil outlet (739) is provided with a first oil nozzle (73A), which is suitable for connecting to a circulating oil pump.

62. The actuator according to claim 58 further includes a transmission assembly (1A), the transmission assembly (1A) including a transmission housing (11A) and a transmission component (12A), the transmission housing (11A) being connected to the side of the first housing (73) facing away from the second housing (22), the transmission housing (11A) being provided with a second receiving cavity (116A); The transmission component (1A) is disposed in the second receiving cavity (116A) and connected between the separation and engagement switching component (9) and the first power component (7); the second receiving cavity (116A) is provided with lubricating oil, and the transmission component (12A) is immersed in the lubricating oil.

63. The actuator according to claim 62 further includes a second sealing gasket (10B) disposed between the first housing (73) and the transmission box (11A).

64. The actuator of claim 62, wherein, The transmission box (11A) is also provided with a second through hole (112A), which connects the second receiving cavity (116A) and the first receiving cavity (731); The lead screw (72) passes through the second through hole (112A) and is connected to the transmission component (12A).

65. The actuator of claim 64, wherein, The gap between the lead screw (72) and the second through hole (112A) forms an oil guiding gap, which connects the second receiving cavity (116A) and the first receiving cavity (731); The transmission box (11A) is provided with a second oil outlet (150A), which is adapted to be connected to the circulating oil pump.

66. The actuator of claim 65, wherein, The second oil outlet (150A) is provided with a second oil nozzle (160A), which is adapted to be connected to the circulating oil pump.

67. The actuator of claim 64, wherein, The transmission box (11A) is also provided with a first rotary seal (130A), which is located between the inner wall surface of the second through hole (112A) and the lead screw (72) to seal the gap between the inner wall surface of the second through hole (112A) and the lead screw (72).

68. The actuator of claim 62, wherein, The second receiving cavity (116A) has a second opening at the section opposite to the first housing (73); The actuator also includes a fork arm (4) and a third sealing gasket (10C). The fork arm (4) is connected to the side of the transmission box (11A) facing away from the first housing (73) and covers the second opening. The third sealing gasket (10C) is located between the fork arm (4) and the transmission box (11A).

69. The actuator of claim 7, wherein, The lead screw (72) is connected to the first power assembly (7) for transmission. The first component (1) includes: The first housing (11) has the nut (13) disposed inside the first housing (11) and is movable relative to the first housing (11) along the relative movement direction of the first component (1) and the second component (2); The third elastic element (15) is disposed between the nut (13) and the inner wall surface of the first housing (11) facing away from the first power assembly (7); the third elastic element (15) has a first preload.

70. The actuator of claim 69, wherein, The first component (1) further includes: The second pressure plate (14) is fixedly connected to the first housing (11) and is located on the side of the nut (13) facing the first power assembly (7).

71. The actuator of claim 69, wherein, One of the nut (13) and the first housing (11) is provided with a fourth limiting boss (133), and the other of the nut (13) and the first housing (11) is provided with a fourth limiting groove; the fourth limiting boss (133) is provided in the fourth limiting groove and can move in the fourth limiting groove along the relative moving direction of the first component (1) and the second component (2).

72. The actuator of claim 69, wherein, The first component (1) is also provided with a buffer pad (16), which is located inside the first housing (11) and on the side of the third elastic member (15) opposite to the nut (13).

73. The actuator of claim 2, wherein, The rated power of the first power component is greater than or equal to the rated power of the second power component.

74. The actuator of claim 1, wherein, The actuator outputs less thrust in the first operating mode than in the second operating mode.

75. The actuator of claim 1, wherein, The total operating power of the actuator in the first operating mode is less than the total operating power in the second operating mode.

76. The actuator of claim 1, wherein, In the first working mode, the relative speed of the first component (1) and the second component (2) is less than or equal to 1 m / s; in the second working mode, the relative speed of the first component (1) and the second component (2) is greater than 1 m / s.

77. The actuator according to claim 1, further comprising: A tower top assembly (3), which is connected to the first component (1) and is adapted to be connected to the vehicle body; A fork arm (4) is connected to the second component (2) and is adapted to be connected to a wheel.

78. The actuator according to claim 76, further comprising: The lower support member (6) is connected to the second component (2); A first elastic element (5) is connected between the tower top assembly (3) and the lower support element (6).

79. A suspension system comprising the actuator according to any one of claims 1-78.

80. A vehicle comprising the suspension system of claim 79.

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