Actuator assembly, suspension assembly and vehicle

Abstract

The invention provides an actuator assembly, a suspension assembly and a vehicle. The actuator assembly comprises an actuator module, the actuator module comprises a moving part, and the moving part can move in the axial direction of the moving part; the brake is arranged on the periphery of the moving part and used for abutting against the moving part so as to limit movement of the moving part. Compared with a traditional friction type electromagnetic brake, the brake adopted by the invention does not generate scraps or dust, and does not need additional isolation measures, so that the brake cost of an actuator assembly is favorably controlled. In addition, the brake can limit the movement of the moving part by abutting against the moving part to achieve braking, the braking mode is accurate and effective, rapid braking of the actuator assembly can be achieved, and the braking effect is improved. Meanwhile, the brake can keep large radial rigidity during braking, so that the actuator assembly has larger load capacity and larger braking torque, and the actuator assembly can be suitable for scenes with large loads.

Description

Technical Field

[0001] This invention relates to the field of actuator technology, and in particular to an actuator assembly, a suspension assembly, and a vehicle. Background Technology

[0002] The actuator assembly connects the vehicle body and the wheels. It can apply control force to the controlled object according to a defined control law, thereby adjusting the distance between the vehicle body and the wheels. During the operation of the actuator assembly, it needs to be precisely braked by a brake system so that the actuator assembly can stop at a certain height.

[0003] However, existing brakes have poor braking performance and high braking costs, and cannot achieve precise, effective, and rapid braking of the actuator assembly. Summary of the Invention

[0004] In view of this, the present invention provides an actuator assembly, a suspension assembly, and a vehicle to at least solve the problems of poor braking performance and high braking cost of brakes in current actuator assemblies.

[0005] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0006] The present invention provides an actuator, comprising: an actuator module, the actuator module including a movable member that is movable along its axial direction; and a brake disposed on the outer periphery of the movable member for abutting against the movable member to restrict the movement of the movable member.

[0007] Optionally, the brake includes: a base body having a through hole, the movable member passing through the through hole, and the through hole having an opening in its wall; and a braking assembly disposed in the base body, a portion of which can extend out from the opening to abut against the movable member.

[0008] Optionally, the braking assembly includes a braking body, a portion of which can extend from the opening to abut against the moving member.

[0009] Optionally, the surface of the braking body near the moving member is an arc surface, and the radius of curvature of the arc surface is the same as the radius of the moving member.

[0010] Optionally, the braking assembly further includes a second driving member connected to the braking body for driving the braking body to extend out of the opening.

[0011] Optionally, the second driving component includes: an air pipe fixedly connected to the seat body, the air pipe being used to inject gas into the seat body; and a pneumatic piston movably connected to the seat body, the pneumatic piston being used to push the brake body out of the opening under the action of air pressure in the seat body.

[0012] Optionally, the second driving member further includes an adjusting member, which is connected to the seat and the pneumatic piston respectively. The adjusting member can move in a direction perpendicular to the axial direction of the moving member to adjust the position of the pneumatic piston in the seat.

[0013] Optionally, the adjusting element is a screw.

[0014] Optionally, the second driving member further includes: a first pushing member disposed between the pneumatic piston and the brake body, wherein the pneumatic piston pushes the brake body out of the opening via the first pushing member; and / or, a second pushing member disposed between the pneumatic piston and the adjusting member, wherein the adjusting member adjusts the position of the pneumatic piston in the seat body via the second pushing member.

[0015] Optionally, the first pusher and / or the second pusher are rolling elements.

[0016] Optionally, the surface of the brake body that abuts against the first pusher is an inclined surface.

[0017] Optionally, the actuator module further includes a housing, wherein the brake is disposed within the housing.

[0018] Optionally, the actuator module further includes: a first driving member disposed within the housing; a rotating member connected to the first driving member, the first driving member being used to drive the rotating member to rotate; the rotating member and the moving member forming a kinematic pair to convert the rotational motion of the rotating member into the linear motion of the moving member.

[0019] Optionally, the brake is disposed on the side of the first drive member near the vehicle body end; and / or, the brake is disposed on the side of the first drive member near the wheel end.

[0020] Optionally, the housing component includes a first housing and a second housing, the first housing and the second housing being fixedly connected; the movable member passes through the second housing, and at least a portion of the movable member extends into the first housing; the brake is disposed within the first housing; and the first driving member and the rotating member are disposed within the second housing.

[0021] Optionally, the moving component is a lead screw, the rotating component is a lead nut, and the moving component and the rotating component constitute a ball screw pair.

[0022] Optionally, the first driving member includes: a stator, disposed along the axial direction of the moving member; a rotor, disposed along the axial direction of the moving member and located within the stator; and a rotating member embedded inside the rotor and fixedly connected to the rotor.

[0023] Optionally, the rotating component has a connecting flange at its axial end, and the connecting flange extends radially along the rotating component; the rotating component is connected to the rotor through the connecting flange.

[0024] Optionally, the connecting flange is provided with a connecting hole for inserting a fastener to detachably connect the rotating component to the rotor.

[0025] Optionally, the actuator module further includes: a first bearing, sleeved on the side of the rotating member close to the first housing, for realizing the axial upper limit and radial limit of the rotating member; and / or, a second bearing, sleeved on the side of the rotating member away from the first housing, for realizing the axial lower limit and radial limit of the rotating member.

[0026] Optionally, the rotating component includes a body segment and a connecting segment; the connecting segment is located on both sides of the body segment in the axial direction, and the outer diameter of the connecting segment is smaller than the outer diameter of the body segment; the first bearing and / or the second bearing is sleeved on the connecting segment.

[0027] Optionally, the brake is located on the side of the first bearing opposite to the second bearing; and / or, the brake is located on the side of the second bearing opposite to the first bearing.

[0028] Optionally, the first housing is provided with a first limiting part, which protrudes from the inner wall of the first housing and abuts against the surface of the brake on the side opposite to the second housing, so as to restrict the axial movement of the brake.

[0029] Optionally, the first housing further includes a second limiting portion, which protrudes from the inner wall of the first housing and abuts against the outer peripheral surface of the brake to restrict the circumferential movement of the brake.

[0030] Optionally, a limiting surface is provided on the outer peripheral surface of the brake. The limiting surface has a planar structure and abuts against the second limiting part.

[0031] Optionally, there are at least two second limiting portions, and at least two second limiting portions are arranged at intervals around the brake.

[0032] Optionally, the second limiting portion extends along the axial direction of the moving member to connect with the first limiting portion.

[0033] Optionally, the first housing has a flange edge on the side near the second housing, the flange edge extending radially along the first housing, and the first housing is fixedly connected to the second housing through the flange edge.

[0034] Optionally, the end of the second housing near the first housing extends in the direction toward the moving member to form a third limiting portion, the third limiting portion abutting against the side of the brake near the second housing to restrict the axial movement of the brake.

[0035] Optionally, the actuator module further includes: a lower fork arm, fixedly connected to the side of the moving member away from the second housing; and an elastic support member, connected between the second housing and the lower fork arm.

[0036] Optionally, the actuator module further includes a protective sleeve, which is fitted onto the moving part and located between the second housing and the lower fork arm.

[0037] The present invention also provides a suspension assembly including the actuator assembly described in any of the preceding claims.

[0038] The present invention also provides a vehicle comprising a body, wheels, and an actuator assembly or a suspension assembly as described in any of the preceding claims, the actuator assembly or the suspension assembly being connected between the body and the wheels.

[0039] Compared with existing technologies, the actuator assembly, suspension assembly, and vehicle described in this invention have the following advantages:

[0040] The actuator assembly of this invention includes an actuator module, which includes a movable member that can move along its axial direction; and a brake disposed on the outer periphery of the movable member to abut against the movable member and restrict its movement. Compared to traditional friction-type electromagnetic brakes, the brake used in this invention does not generate debris or dust and does not require additional isolation measures, thus helping to control the braking cost of the actuator assembly. Furthermore, the brake of this invention achieves braking by abutting against the movable member to restrict its movement, providing precise and effective braking and enabling rapid braking of the actuator assembly, thus improving braking performance. Simultaneously, the brake maintains high radial stiffness during braking, resulting in greater load capacity and braking torque, making the actuator assembly suitable for applications with high loads.

[0041] The suspension assembly and vehicle of the present invention have the same or similar advantages over the prior art and the aforementioned actuators, which will not be repeated here. Attached Figure Description

[0042] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0043] Figure 1 This is a schematic diagram of the appearance of an actuator according to an embodiment of the present invention;

[0044] Figure 2 This is a cross-sectional view of an actuator according to an embodiment of the present invention;

[0045] Figure 3 This is a partial cross-sectional view of an actuator according to an embodiment of the present invention;

[0046] Figure 4 This is a schematic diagram of the appearance of a brake according to an embodiment of the present invention;

[0047] Figure 5 This is a cross-sectional view of a brake according to an embodiment of the present invention;

[0048] Figure 6 This is a schematic diagram of the appearance of a first housing in an embodiment of the present invention;

[0049] Figure 7 This is a cross-sectional view of a first housing in an embodiment of the present invention;

[0050] Figure 8 This is a schematic diagram of the appearance of a ball bolt according to an embodiment of the present invention;

[0051] Figure 9 This is a cross-sectional view of a ball bolt according to an embodiment of the present invention.

[0052] Explanation of reference numerals in the attached figures:

[0053] 1-First housing, 10-Accommodation cavity, 11-First housing, 111-First limiting part, 112-Second limiting part, 12-Second housing, 121-Third limiting part, 13-Flange edge, 14-Connecting hole, 15-Lower end cover;

[0054] 2-Moving parts;

[0055] 3-Brake, 30-Brake assembly, 31-Seat, 310-Limiting surface, 32-Through hole, 33-Brake body, 34-Air pipe, 35-Pneumatic piston, 361-First pusher, 362-Second pusher, 37-Adjusting component;

[0056] 5-First driving component, 51-Stator, 52-Rotor;

[0057] 6-Rotating component, 61-Body section, 62-Connecting section, 63-Helical raceway, 64-Connecting hole, 65-Connecting flange;

[0058] 71 - First bearing, 72 - Second bearing;

[0059] 8-Lower fork arm, 9-Elastic support, 91-Protective sleeve. Detailed Implementation

[0060] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0061] The terms "first," "second," etc., used in the specification and claims of this invention are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0062] It should be understood that the phrase "some embodiments" throughout the specification means that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of the invention. Therefore, "some embodiments" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0063] The following detailed description of an actuator assembly, suspension assembly, and vehicle provided by the present invention is illustrated through specific embodiments.

[0064] Please refer to Figures 1 to 7 An actuator assembly provided in this embodiment of the invention includes: an actuator module, the actuator module including a movable member 2, the movable member 2 being movable along its axial direction; and a brake 3, the brake 3 being disposed on the outer periphery of the movable member 2 and used to press against the movable member 2 to restrict the movement of the movable member 2.

[0065] In this embodiment, the actuator assembly is used to connect with the vehicle body and wheels to achieve distance adjustment between the vehicle body and wheels. This distance adjustment relies on the movement of the moving member 2 along its axial direction. Figure 2 As shown, the movable part 2 is a columnar structure, which can be cylindrical, square, prismatic, etc. The shape and structure are not limited in this embodiment.

[0066] The movable component 2 has an outer peripheral surface arranged around its axial direction. The brake 3 is located on the outer periphery of the movable component 2. During the operation of the actuator assembly, the brake 3 separates from the outer peripheral surface of the movable component 2, and the movable component 2 moves along its axial direction to adjust the distance between the vehicle body and the wheels. During the braking process of the actuator assembly, the brake 3 abuts against the outer peripheral surface of the movable component 2, restricting the axial and radial movement of the movable component 2, causing the actuator assembly to stop at a certain height, thereby achieving braking. The brake 3 abutting against the outer peripheral surface of the movable component 2 can be achieved by the brake 3 being located on one side of the movable component 2, by braking through single-sided abutment, by the brake 3 being located on both sides of the movable component 2, or by the brake 3 being arranged around the outer periphery of the movable component 2, by braking through a circumferential abutment.

[0067] Traditional actuator assemblies mostly employ friction-type electromagnetic brakes. However, these brakes are prone to generating friction pad debris or dust over prolonged use. To prevent this debris or dust from entering the actuator module and affecting its normal operation, additional isolation measures are typically required, increasing the braking cost of the actuator assembly. The brake used in this invention, however, does not generate debris or dust and eliminates the need for additional isolation measures, thus helping to control the braking cost of the actuator assembly. Furthermore, the brake in this invention achieves braking by simply pressing against the moving part, thus limiting its movement. This precise and effective braking method enables rapid braking of the actuator assembly and improves braking performance. Simultaneously, the brake maintains high radial stiffness during braking, resulting in greater load capacity and braking torque, making the actuator assembly suitable for applications with high loads.

[0068] Alternatively, please refer to Figure 4 and Figure 5 The brake 3 includes a seat 31, on which a through hole 32 is provided, and a moving member 2 passes through the through hole 32. The hole wall of the through hole 32 has an opening. A brake assembly 30 is provided in the seat 31, and a part of the brake assembly 30 can extend out from the opening to abut against the moving member 2.

[0069] In this embodiment, a through hole 32 is formed in the middle of the seat 31. The through hole 32 can be any shape, such as round, elliptical, square, or rhomboid, ensuring that the size of the through hole 32 is slightly larger than the radial dimension of the moving member 2, so that the moving member 2 can pass through the through hole 32. The wall of the through hole 32 has an opening, and the braking assembly 30 is disposed in the seat 31. Part of the braking assembly 30 can extend from the opening to press against the moving member 2, restricting the axial and radial movement of the moving member 2. Thus, the braking of the actuator assembly can be achieved through the action of the braking assembly 30. The braking assembly 30 can be an electric drive structure, a pneumatic drive structure, a hydraulic drive structure, etc., and this embodiment does not limit this.

[0070] Alternatively, please refer to Figure 4 and Figure 5 The braking assembly 30 includes a braking body 33, a portion of which can extend from the opening to abut against the moving member 2.

[0071] In this embodiment, the braking assembly 30 includes a braking body 33. The braking effect of the braking assembly 30 on the moving member 2 is achieved by the braking body 33. The braking body 33 can be block-shaped, rod-shaped, plate-shaped, etc., and this embodiment does not limit this. The braking body 33 can be directly electrically connected to the control system of the actuator assembly. Under the command of the control system, the braking body 33 can extend directly from the opening of the through hole 32 to abut against the moving member 2, or it can extend partially or completely from the opening of the through hole 32 to abut against the moving member 2 by changing its own structure.

[0072] The surface of the brake body 33 near the moving part 2 is the contact surface that contacts the moving part 2. The shape and structure of the contact surface are adapted to the shape and structure of the moving part 2. If the moving part 2 is a prism, the contact surface is a planar structure, and the contact surface is parallel to the outer peripheral surface of the moving part 2 to ensure full contact with the outer peripheral surface of the moving part 2. If the moving part 2 is a cylinder, the contact surface is an arc surface structure, and the radius of curvature of the arc surface is the same as the radius of the moving part 2, thereby ensuring full contact between the brake body 33 and the outer peripheral surface of the moving part 2, improving the stability of the brake body 33 against the moving part 2, and achieving a better braking effect.

[0073] It should be noted that the number of openings can be two or more. If there are two openings, they can be arranged opposite each other, and the brake body 33 can also be arranged opposite each other within the seat 31 to ensure a tight clamping effect. If there are three openings, they can be evenly spaced along the circumference of the moving member 2, and the brake body 33 can also be evenly spaced within the seat 31 to ensure a tight clamping effect. In some embodiments, the openings can also be configured as annular holes, which surround the wall of the through hole 32 along the circumference of the moving member 2. Accordingly, the brake body 33 has an arc-shaped structure within the seat 31, such as a semi-circular or circular structure, so that the brake body 33 can better cover the surface of the moving member 2, maximizing the contact area between the brake body 33 and the outer circumference of the moving member 2 to achieve a better clamping and braking effect.

[0074] Optionally, the braking assembly 30 further includes a second drive member connected to the braking body 33 for driving the braking body 33 to extend out of the opening.

[0075] In this embodiment, the brake body 33 extends out from the opening of the through hole 32 under the driving action of the second driving member. The second driving member can be an electric driving member, a pneumatic driving member, a hydraulic driving member, etc., and this embodiment does not limit it.

[0076] Alternatively, please continue to refer to [link / reference]. Figure 4 and Figure 5 The second driving component includes: an air pipe 34, which is fixedly connected to the seat 31 and is used to inject gas into the seat 31; and a pneumatic piston 35, which is movably connected to the seat 31 and is used to push the brake body 33 out of the opening under the action of the air pressure in the seat 31.

[0077] In this embodiment, the second driving component is a pneumatic driving component, including an air pipe 34 and a pneumatic piston 35. The air pipe 34 is fixedly connected to the seat 31. The fixed connection method includes, but is not limited to, fastener assembly connection, welding, snap-fit, etc., which are not limited in this embodiment. The air pipe 34 is provided with an air inlet and is connected to an external air source. The air source can inject gas into the interior of the seat 31 through the air inlet on the air pipe 34. High-pressure gas can be used to improve pneumatic efficiency. The pneumatic piston 35 is movably connected to the seat 31 and can move relative to the seat 31. When the actuator assembly is in braking mode, the external air source injects gas into the interior of the seat 31 through the air pipe 34, which increases the air pressure inside the seat 31. Under the action of air pressure, the pneumatic piston 35 is pushed to move downward. During the movement of the pneumatic piston 35, the brake body 33 is pushed out of the opening on the wall of the through hole 32, thereby causing the brake body 33 to press against the outer peripheral surface of the moving component 2 to achieve braking.

[0078] Alternatively, please continue to refer to [link / reference]. Figure 4 and Figure 5 The second driving component also includes an adjusting component 37, which is connected to the seat 31 and the pneumatic piston 35 respectively. The adjusting component 37 can move in a direction perpendicular to the axis of the moving component 2 to adjust the position of the pneumatic piston 35 in the seat 31.

[0079] In this embodiment, the adjusting member 37 is connected to the seat 31 and the pneumatic piston 35. The adjusting member 37 is movably connected to the seat 31 and can move relative to the seat 31, adjusting the position of the pneumatic piston 35 during movement. Furthermore, since the pneumatic piston 35 needs to push the brake body 33 out of the opening and against the moving member 2 in a direction perpendicular to the axial direction of the moving member 2 (i.e., the radial direction of the moving member 2), the adjusting member 37 is configured to move in a direction perpendicular to the axial direction of the moving member 2. This ensures that the pneumatic piston 35 is always in contact with the brake body 33, effectively pushing the brake body 33, thereby correcting braking errors and improving braking performance. In this embodiment, a state with an angle of 89° to 91° between the moving member 2 and the axial direction is considered as a direction perpendicular to the axial direction of the moving member 2.

[0080] In some embodiments, the adjusting member 37 can be a screw. The side wall of the seat 31 is provided with a threaded hole, and the screw passes through the threaded hole. One end of the screw abuts against the adjusting member 37, and the other end protrudes outside the seat 31. During the tightening or tightening of the screw, the position of the pneumatic piston 35 can be adjusted in the direction perpendicular to the axial direction of the moving member 2.

[0081] Alternatively, please continue to refer to [link / reference]. Figure 4 and Figure 5 The second driving member further includes: a first pushing member 361, disposed between the pneumatic piston 35 and the brake body 33, wherein the pneumatic piston 35 pushes the brake body 33 out of the opening through the first pushing member 361; and / or, a second pushing member 362, disposed between the pneumatic piston 35 and the adjusting member 37, wherein the adjusting member 37 adjusts the position of the pneumatic piston 35 in the seat 31 through the second pushing member 362.

[0082] In this embodiment, the second driving component may include a first pushing component 361. The first pushing component 361 is disposed between the pneumatic piston 35 and the braking body 33. The pneumatic piston 35 contacts the braking body 33 through the first pushing component 361, pushing the braking body 33 to extend from the opening. The first pushing component 361 can be connected to the pneumatic piston 35, or to the braking body 33, or to both the pneumatic piston 35 and the braking body 33 respectively. Connection methods include, but are not limited to, welding, assembly, and snap-fit. Furthermore, the first pushing component 361 can also be integrally formed with the pneumatic piston 35, or integrally formed with the braking body 33.

[0083] The second driving component may further include a second pushing component 362, which is disposed between the pneumatic piston 35 and the adjusting component 37. The adjusting component 37 contacts the pneumatic piston 35 through the second pushing component 362 to adjust the position of the pneumatic piston 35 within the seat 31. The second pushing component 362 can be connected to the pneumatic piston 35, or to the adjusting component 37, or to both the pneumatic piston 35 and the adjusting component 37 respectively. Connection methods include, but are not limited to, welding, assembly, and snap-fit. Furthermore, the second pushing component 362 may be integrally formed with the pneumatic piston 35 or with the adjusting component 37.

[0084] Of course, the second drive member may also include the first pusher 361 and the second pusher 362 to facilitate the extension of the brake body 33 from the opening and the adjustment of the pneumatic piston 35 by the adjustment member 37.

[0085] Optionally, the first pusher 361 and / or the second pusher 362 are rolling elements.

[0086] In this embodiment, the first pushing member 361 can be a rolling element. The rolling element can convert the friction between the pneumatic piston 35 and the brake body 33 into rolling friction, thereby reducing the wear on the surfaces of the pneumatic piston 35 and the brake body 33 and extending their service life. At the same time, the rolling element can prevent jamming during the process of the pneumatic piston 35 pushing the brake body 33 out, thereby improving the reliability of the brake 3 pressing against the moving member 2 to achieve the braking process.

[0087] The second pushing member 362 can also be a rolling element. The rolling element can convert the friction between the pneumatic piston 35 and the adjusting member 37 into rolling friction, thereby reducing the wear on the surfaces of the pneumatic piston 35 and the adjusting member 37 and extending their service life. At the same time, the rolling element can prevent the adjusting member 37 from jamming during the adjustment of the radial movement of the pneumatic piston 35, thereby improving the reliability of the adjustment process.

[0088] Of course, both the first pusher 361 and the second pusher 362 can be rolling elements, and the specific configuration can be set according to actual needs. This embodiment does not impose any restrictions on this.

[0089] Furthermore, in some embodiments, the rolling element can be configured as a cylindrical structure, with the axial direction of the cylindrical structure perpendicular to the axial direction of the moving member 2, so that the rolling element can roll along the axial direction of the moving member 2, thereby converting the friction between the pneumatic piston 35 and the brake body 33 and the friction between the pneumatic piston 35 and the adjusting member 37 into rolling friction.

[0090] Alternatively, please continue to refer to Figure 5 The surface of the brake body 33 that abuts against the first pusher 361 is an inclined surface.

[0091] In this embodiment, the surface where the brake body 33 abuts against the first pusher 361 is an inclined surface. As the pneumatic piston 35 moves downward, the distance between the pneumatic piston 35 and the brake body 33 gradually decreases, and the first pusher 361 rolls on the inclined surface. This helps to reduce the risk of the first pusher 361 falling off and also helps to achieve the steady extension of the brake body 33, thereby improving the stability of the braking process.

[0092] Alternatively, please continue to refer to Figure 1 The actuator module also includes a housing 1, and the brake 3 is disposed inside the housing 1.

[0093] In this embodiment, the brake 3 is disposed within the housing 1. The brake 3 can be interference-fitted with the inner wall of the housing 1 to fix the brake 3 within the housing 1. The housing 1 provides support and limit for the brake 3, allowing the actuator module to achieve brake 3 installation and fixation with a simpler structure. Simultaneously, the housing 1 provides some protection for the brake 3, preventing external impurities or moisture from entering the housing 1 and affecting its performance. In some embodiments, a sealing element made of silicone, rubber, foam, or other materials can be used to seal the housing 1, providing better protection for the brake 3 within the housing 1 and thus ensuring the braking effect of the brake 3.

[0094] Optionally, the actuator module further includes: a first driving member 5, disposed within the housing member 1; a rotating member 6, connected to the first driving member 5, the first driving member 5 being used to drive the rotating member 6 to rotate; the rotating member 6 and the moving member 2 forming a kinematic pair to convert the rotational motion of the rotating member 6 into the linear motion of the moving member 2.

[0095] In this embodiment, the first driving component 5 can be an electric driving component. The first driving component 5 is disposed within the housing component 1 and fixedly connected to the housing component 1. The fixed connection method includes, but is not limited to, assembly connection, welding, and snap-fit. The rotating component 6 is connected to the outer peripheral surface of the moving component 2. The rotating component 6 can be a petal-shaped structure, surrounding and connected to the outer peripheral surface of the moving component 2, or it can be a columnar structure, sleeved on the outer peripheral surface of the moving component 2. The first driving component 5 is connected to the rotating component 6, enabling the rotating component 6 to rotate around its axis. Simultaneously, the rotating component 6 and the moving component 2 form a kinematic pair, which can convert the rotational motion of the rotating component 6 into linear motion of the moving component 2 along its axial direction, thereby making the driving process of the moving component 2 more effortless and also helping to save internal layout space of the actuator module.

[0096] Optionally, in some embodiments, the brake 3 is disposed on the side of the first drive member 5 near the vehicle body end, or the brake 3 is disposed on the side of the first drive member 5 near the wheel end, or the number of brakes 3 is two, with one brake 3 disposed on the side of the first drive member 5 near the vehicle body end and the other brake 3 disposed on the side of the first drive member 5 near the wheel end, so as to achieve better braking effect.

[0097] Alternatively, please continue to refer to Figure 1 and Figure 2 The housing component 1 includes a first housing 11 and a second housing 12, which are fixedly connected; a brake is disposed in the first housing 11; a moving member 2 passes through the second housing 12, and at least a portion of the moving member 2 extends into the first housing 11; a first driving member 5 and a rotating member 6 are disposed in the second housing 12.

[0098] In this embodiment, the first housing 11 and the second housing 12 are fixedly connected. The fixed connection methods include, but are not limited to, assembly connection, welding, and snap-fit. To facilitate the inspection and maintenance of the components of the first housing 11 and the second housing 12, this embodiment detachably connects the second housing 12 and the first housing 11 together using fasteners such as bolts, screws, and rivets. The first housing 11 has a cylindrical structure with a closed top and an open bottom, forming an open receiving cavity 10. The top of the first housing 11 is used for vehicle body connection; specifically, as shown... Figure 6 and Figure 7 As shown, the top of the first housing 11 is provided with bolts, which can be one, two, or more. The first housing 11 is detachably connected to the vehicle body via bolts. The second housing 12 also has a receiving cavity 10 inside, and the receiving cavities 10 of the first housing 11 and the second housing 12 are interconnected. The moving member 2 is disposed in the receiving cavity 10, wherein the moving member 2 passes through the receiving cavity 10 of the second housing 12, and at least a portion of the moving member 2 extends into the receiving cavity 10 of the first housing 11. The brake is disposed in the first housing 11. The first driving member 5 and the rotating member 6 are both disposed in the receiving cavity 10 of the second housing 12. The brake 3 can be disposed in the receiving cavity 10 of the first housing 11 or in the receiving cavity 10 of the second housing 12.

[0099] Alternatively, please refer to Figure 8 and Figure 9 The moving part 2 is a lead screw, and the rotating part 6 is a lead screw nut. The moving part 2 and the rotating part 6 constitute a ball screw pair. The ball screw pair has high motion accuracy, high transmission efficiency, and high load-bearing capacity, which can effectively improve the motion accuracy and motion efficiency of the actuator assembly, and at the same time expand the application range of the actuator assembly.

[0100] In this embodiment, the rotating component 6 includes a threaded sleeve and balls, etc. The threaded sleeve is provided with a helical raceway 63. When the moving component 2 moves linearly along its axial direction, the balls roll in the helical raceway 63, causing relative sliding between the moving component 2 and the threaded sleeve. The rotating component 6 transforms the sliding friction on the surface of the moving component 2 into rolling friction, which greatly reduces the coefficient of friction and improves the transmission efficiency. At the same time, the rotating component 6 has high precision, rigidity and large load-bearing capacity, which can ensure the effective transmission of the moving component 2.

[0101] Alternatively, please continue to refer to Figure 2 The first driving component 5 includes: a stator 51, which is arranged along the axial direction of the moving component 2; a rotor 52, which is arranged along the axial direction of the moving component 2 and is disposed within the stator 51; and a rotating component 6, which is embedded in the inner side of the rotor 52 and is fixedly connected to the rotor 52.

[0102] In this embodiment, the first driving component 5 is an electromagnetic coil driving mechanism. The first driving component 5 includes a stator 51 and a rotor 52. The stator 51 and rotor 52 drive the rotating component 6 to rotate via electromagnetic induction. Specifically, the stator 51 and rotor 52 are coaxially arranged and are cylindrical structures arranged along the axial direction of the moving component 2. The rotor 52 is embedded in the stator 51, and the rotating component 6 is embedded in the rotor 52 and fixedly connected to the rotor 52. The fixed connection method includes, but is not limited to, welding, assembly connection, snap-fit, etc. A winding coil is wound on the stator 51. When the winding coil is energized, the stator 51 generates a magnetic field. This magnetic field interacts with the rotor 52, causing the rotor 52 to rotate relative to the stator 51 through electromagnetic force. The rotor 52 drives the rotating component 6 to rotate synchronously, thereby realizing the driving of the rotating component 6. The first driving component 5 adopts an electromagnetic coil driving mechanism, which has a simple structure, fast response, and high driving accuracy, which helps to improve the rotation accuracy and rotation efficiency of the rotating component 6, thereby improving the working efficiency of the actuator assembly.

[0103] Alternatively, please continue to refer to Figure 2 The rotating component 6 can be a cylindrical structure and nested inside the rotor 52 to make reasonable use of the space within the first driving component 5, making the actuator module structure more compact, which helps to reduce the volume of the actuator assembly and facilitates the installation and layout of the actuator assembly. In addition, in some embodiments, the rotor 52 can be set as a split structure, which can be split in half along its axial direction to facilitate fixed connection with the rotating component 6.

[0104] Alternatively, please refer to Figure 8 The rotating part 6 is provided with a connecting flange 65 at its axial end, and the connecting flange 65 extends radially along the rotating part 6; the rotating part 6 and the rotor 52 are connected through the connecting flange 65.

[0105] In this embodiment, the rotating component 6 is provided with a connecting flange 65 at its axial end. The connecting flange 65 can be provided at one end of the rotating component 6 along its axial direction, or at both ends of the rotating component 6 along its axial direction. The connecting flange 65 extends radially along the rotating component 6, and the radial direction of the rotating component 6 is perpendicular to the axial direction of the moving component 2. An angle of 89° to 91° between the radial direction of the rotating component 6 and the axial direction of the moving component 2 is considered as the radial direction of the rotating component 6 and the axial direction of the moving component 2 being perpendicular to each other. The rotating component 6 is connected to the rotor 52 via the connecting flange 65. Specifically, the connecting flange 65 can be welded to the rotor 52, or it can be assembled to the rotor 52 using fasteners; this embodiment does not impose any limitations on this. The connecting flange 65 can axially limit the rotor 52, preventing axial movement of the rotor 52 during rotation, thereby improving the reliability of the first driving component 5 driving the rotating component 6 to rotate.

[0106] Alternatively, please refer to Figure 8and Figure 9 The connecting flange 65 is provided with a connecting hole 64, which is used to pass through fasteners such as bolts, screws, and rivets to detachably connect the rotating part 6 and the rotor 52, thereby making it easier to disassemble and maintain the rotating part 6 and the rotor 52.

[0107] Alternatively, please continue to refer to Figure 2 The actuator module further includes: a first bearing 71, sleeved on the side of the rotating member 6 near the first housing 11, for realizing the axial upper limit and radial limit of the rotating member 6; and / or, a second bearing 72, sleeved on the side of the rotating member 6 away from the first housing 11, for realizing the axial lower limit and radial limit of the rotating member 6.

[0108] In this embodiment, the actuator module may include a first bearing 71 or a second bearing 72. The first bearing 71 is sleeved on the side of the rotating member 6 near the first housing 11, enabling axial upper limit and radial limit of the rotating member 6. The second bearing 72 is sleeved on the side of the rotating member 6 away from the first housing 11, enabling axial lower limit and radial limit of the rotating member 6, thereby ensuring stable rotation of the rotating member 6 and improving the rotational accuracy and load-bearing capacity of the rotating member 6. Of course, the actuator module may also include both the first bearing 71 and the second bearing 72 to simultaneously achieve axial upper and lower limit and radial limit of the rotating member 6, further ensuring the rotational effect of the rotating member 6. When the actuator module includes one bearing, it helps to control the overall volume of the actuator assembly, reduce the overall weight, and control production costs. When the actuator module includes two bearings, it helps to further improve the reliability of the actuator assembly during operation.

[0109] In addition, the first bearing 71 and the second bearing 72 can be ball bearings, with the rolling elements of the ball bearing having a spherical structure, such as deep groove ball bearings, angular contact ball bearings, self-aligning ball bearings, etc. They can also be roller bearings, with the rolling elements of the roller bearing having a cylindrical structure, a tapered structure, or a needle roller structure, such as cylindrical roller bearings, tapered roller bearings, needle roller bearings, etc. The specific type is not limited in this embodiment.

[0110] Alternatively, please continue to refer to Figure 8 and Figure 9 The rotating component 6 includes a body section 61 and a connecting section 62; the connecting section 62 is located on both sides of the body section 61 in the axial direction, and the outer diameter of the connecting section 62 is smaller than the outer diameter of the body section 61; the first bearing 71 and / or the second bearing 72 are sleeved on the connecting section 62.

[0111] In this embodiment, the body segment 61 is used to connect with the rotor 52. Specifically, the rotor 52 is sleeved on the body segment 61. One of the connecting segments 62 is used to connect with the first bearing 71, and the other is used to connect with the second bearing 72. Specifically, the first bearing 71 and the second bearing 72 are respectively sleeved on the connecting segment 62. The outer diameter of the connecting segment 62 is smaller than the outer diameter of the body segment 61, thereby providing axial limiting for the first bearing 71 and the second bearing 72. It should be noted that the axial length of the connecting segment 62 is much smaller than the axial length of the body segment 61 to ensure the reliability of the connection between the rotating component 6 and the rotor 52.

[0112] Optionally, the brake 3 is located on the side of the first bearing 71 opposite to the second bearing 72; and / or, the brake 3 is located on the side of the second bearing 72 opposite to the first bearing 71.

[0113] In this embodiment, the brake 3 can be disposed inside the first housing 11 and located on the side of the first bearing 71 opposite to the second bearing 72, as shown in the following arrangement. Figure 2 As shown, the brake 3 can also be located inside the second housing 12, on the side of the second bearing 72 opposite to the first bearing 71. Alternatively, there can be two brakes 3, one located on the side of the first bearing 71 opposite to the second bearing 72, and the other on the side of the second bearing 72 opposite to the first bearing 71. The choice can be made according to actual needs, and this embodiment does not impose any limitations on this. With the brake 3 in the above positions, either the first bearing 71 or the second bearing 72 can provide support or limit the brake 3, making it easier to install and fix the brake 3. This also makes the overall structure of the actuator assembly more compact and does not burden the axial length design of the moving part 2.

[0114] Alternatively, please refer to Figure 6 and Figure 7 The first housing 11 is provided with a first limiting part 111, which protrudes from the inner wall of the first housing 11 and abuts against the surface of the brake 3 on the side opposite to the second housing 12, so as to restrict the axial movement of the brake 3.

[0115] In this embodiment, the first limiting part 111 can be integrally formed with the first housing 11 using a molding process. Alternatively, the first limiting part 111 can be an independent component, fixed to the inner wall of the receiving cavity 10 of the first housing 11 by means of interference fit, fastener connection, snap-fit, etc. This embodiment does not limit the connection method between the first limiting part 111 and the first housing 11. The first limiting part 111 protrudes from the inner wall of the receiving cavity 10 and abuts against the side of the brake 3 away from the second housing 12. The first limiting part 111 can restrict the movement of the brake 3 along the axis of the moving part 2, thereby improving the stability of the brake 3 within the first housing 11.

[0116] In some embodiments, the first limiting portion 111 may be arranged in a dotted or block-like pattern around the inner wall of the receiving cavity 10 of the first housing 11 to save material for the first limiting portion 111 and control the production cost of the actuator assembly. In some embodiments, the first limiting portion 111 may be arranged in a continuous and uninterrupted annular pattern around the inner wall of the receiving cavity 10 of the first housing 11 to increase the contact area between the first limiting portion 111 and the brake 3 and improve the reliability of the limiting.

[0117] Alternatively, please continue to refer to Figure 6 and Figure 7 The first housing 11 is further provided with a second limiting part 112, which protrudes from the inner wall of the first housing 11 and abuts against the outer peripheral surface of the brake 3 to restrict the circumferential movement of the brake 3.

[0118] In this embodiment, the second limiting part 112 can be integrally formed with the first housing 11 using a molding process. Alternatively, the second limiting part 112 can be an independent component, fixed to the inner wall of the receiving cavity 10 of the first housing 11 by means of interference fit, fastener connection, snap-fit, etc. This embodiment does not limit the connection method between the second limiting part 112 and the first housing 11. The second limiting part 112 also protrudes from the inner wall of the receiving cavity 10 of the first housing 11, and there are at least two second limiting parts 112. At least two second limiting parts 112 are arranged circumferentially at intervals along the receiving cavity 10 of the first housing 11, and different second limiting parts 112 abut against different parts of the brake 3 along the axial direction.

[0119] Alternatively, please continue to refer to Figure 4 The brake 3 has a limiting surface 310 on its outer peripheral surface. The limiting surface 310 is a planar structure and abuts against the second limiting part 112.

[0120] In this embodiment, the outer peripheral surface of the brake 3 refers to the surface of the brake 3 arranged in the axial direction around the moving member 2. A limiting surface 310 is provided on the outer peripheral surface of the brake 3. The limiting surface 310 is a planar structure. The second limiting part 112 abuts against the limiting surface 310. The plane abuts against the plane to achieve limiting, which can further improve the circumferential limiting effect of the second limiting part 112 on the brake 3, thereby further improving the stability of the brake 3 in the accommodating cavity 10.

[0121] Optionally, there are at least two second limiting portions 112, which are spaced apart around the brake 3 to enhance the circumferential limiting effect of the second limiting portions 112 on the brake 3. For example, there may be four second limiting portions 112 and four limiting surfaces 310. The four second limiting portions 112 are evenly distributed, that is, the interval angle between two adjacent second limiting portions 112 is approximately 9°. Each second limiting portion 112 abuts against the limiting surface 310, thereby achieving all-round limitation of the brake 3 in the circumferential direction.

[0122] Alternatively, please refer to Figure 6 and Figure 7 The second limiting part 112 extends along the axial direction of the moving part 2 to connect with the first limiting part 111, so as to improve the stability of the limiting structure and also help to improve the structural stability of the first housing 11.

[0123] Alternatively, please refer to Figure 6 and Figure 7 The first housing 11 is provided with a flange edge 13 on the side near the second housing 12. The flange edge 13 extends radially along the first housing 11, and the first housing 11 is fixedly connected to the second housing 12 through the flange edge 13.

[0124] In this embodiment, the bottom of the first housing 11 is provided with a flange edge 13, and the first housing 11 is fixedly connected to the second housing 12 through the flange edge 13. Specifically, the flange edge 13 of the first housing 11 is provided with a plurality of spaced connection holes 14, and fasteners such as bolts are inserted into the connection holes 14 and the connection holes on the second housing 12 to achieve a fixed connection between the flange edge 13 and the second housing 12.

[0125] Alternatively, please refer to Figure 3 The end of the second housing 12 near the first housing 11 extends in the direction toward the moving member 2 to form a third limiting part 121. The third limiting part 121 abuts against the side of the brake 3 near the second housing 12 to limit the axial movement of the brake 3.

[0126] In this embodiment, the first limiting part 111 forms the upper limit of the brake 3, and the third limiting part 121 forms the lower limit of the brake 3. The upper surface of the brake 3 abuts against the first limiting part 111, and the lower surface abuts against the third limiting part 121, thereby reliably fixing the brake 3 within the receiving cavity 10 of the first housing 11 and ensuring its braking effect on the moving part 2. In addition, the lower surface of the first bearing 71 can abut against the third limiting part 121, and the third limiting part 121 can also provide a certain supporting and limiting effect on the first bearing 71.

[0127] Alternatively, please continue to refer to Figure 1 and Figure 2The actuator module also includes: a lower fork arm 8, which is fixedly connected to the side of the moving part 2 away from the second housing 12; and an elastic support 9, which is connected between the second housing 12 and the lower fork arm 8.

[0128] In this embodiment, the end of the movable member 2 that faces away from the first housing 11 extends from the second housing 12 and is fixedly connected to the lower fork arm 8. Specifically, as shown... Figure 2 As shown, the lower fork arm 8 has a connecting hole in the middle. Bolts, screws, rivets, and other fasteners are inserted into the connecting hole and screwed into the interior of the moving part 2, thus achieving a fixed connection between the moving part 2 and the lower fork arm 8. The lower fork arm 8 is used for a fixed connection with the wheel. An elastic support 9 is also provided between the second housing 12 and the lower fork arm 8. The elastic support 9 is mainly used to support the weight of the vehicle body and reduce the thrust load on the actuator assembly. The elastic support 9 can be a coil spring or an air spring. The housing part 1 also includes a lower end cover 15, which is fixedly connected to the side of the second housing 12 opposite to the first housing 11. The upper end of the elastic support 9 abuts against the lower end cover 15, and the lower end of the elastic support 9 abuts against the lower fork arm 8. The surface of the lower fork arm 8 has a limiting structure for cooperating with the elastic support 9 to ensure the connection stability of the elastic support 9. In addition, the lower surface of the second bearing 72 can abut against the lower end cover 15, and the lower end cover 15 also provides a certain supporting and limiting effect on the second bearing 72.

[0129] Alternatively, please continue to refer to Figure 2 The actuator module also includes a protective sleeve 91, which is fitted onto the moving part 2 and located between the second housing 12 and the lower fork arm 8. The protective sleeve 91 is mainly used for waterproofing and dustproofing the actuator assembly. Similarly, the upper end of the protective sleeve 91 abuts against the lower end cover 15, and the lower end of the protective sleeve 91 abuts against the lower fork arm 8. The surface of the lower fork arm 8 is provided with a limiting structure that cooperates with the protective sleeve 91 to ensure the connection stability of the protective sleeve 91.

[0130] The actuator assembly of this invention includes three operating modes: active adjustment mode, passive power supply mode, and braking mode. The three operating modes are described below in conjunction with the foregoing embodiments:

[0131] In active adjustment mode, the actuator assembly has two functions: actively adjusting the vehicle height and actively eliminating road surface excitation. Specifically, when performing the active vehicle height adjustment function, the winding coils on the stator 51 of the first drive component 5 are energized to generate a magnetic field, causing the rotor 52 to rotate. The rotation of the rotor 52 drives the rotating component 6 to rotate, which in turn causes the moving component 2 to move along its axial direction. During the movement of the moving component 2, the lower fork arm 8 moves axially synchronously, and the lower fork arm 8 causes the wheel to move up and down, thereby achieving the purpose of actively adjusting the vehicle height. When performing the active road surface excitation elimination function, the road surface excitation is transmitted to the moving component 2 through the wheel and the lower fork arm 8, causing the moving component 2 to move up and down along its axial direction. The rotating component 6 can convert the linear motion of the moving component 2 along its axial direction into its own rotational motion, thereby driving the rotor 52 to rotate. At this time, current is applied to the winding coils of the stator 51 to suppress the rotation of the rotor 52. By suppressing the rotation of the rotor 52, the rotation of the rotating component 6 is suppressed, thereby dissipating road vibration energy and eliminating road surface excitation.

[0132] In passive energy feeding mode, the actuator assembly is mainly used to recover the energy from road surface excitation, reducing system energy consumption. In this mode, the road surface excitation is transmitted to the moving part 2 through the wheels and lower fork arm 8, causing the moving part 2 to move up and down along its axial direction. The rotating part 6 can convert the linear motion of the moving part 2 along its axial direction into its own rotational motion, thereby driving the rotor 52 to rotate. At this time, the winding coils of the stator 51 are no longer energized, but are in a de-energized state. Based on the principle of electromagnetic induction, the permanent magnet of the rotor 52 generates a constant magnetic field. During the rotation of the rotor 52, the winding coils in the stator 51 cut the magnetic field lines, generating current in the coils to form electrical energy, thereby achieving the purpose of energy feeding.

[0133] In braking mode, the actuator assembly is mainly used to maintain a constant vehicle height. In this mode, the air pipe 34 in the brake 3 is connected to an external air source. The external air source injects high-pressure gas into the seat 31 through the air inlet on the air pipe 34, which pushes the pneumatic piston 35 to move within the seat 31. This causes the pneumatic piston 35 to push the brake body 33 out of the opening on the wall of the through hole 32 through the first pusher 361. The brake body 33 presses against and locks the moving part 2, preventing the moving part 2 from moving in its axial direction. This achieves the stop braking of the moving part 2, thus maintaining a constant vehicle height.

[0134] The three modes of the actuator assembly can work together to adapt to different working conditions. For example, when encountering deep potholes or large rocks, the actuator assembly needs to actively raise the vehicle's height to ensure its passability. After raising the vehicle's height, an appropriate current can be supplied to the winding coils of stator 51 to suppress the rotation of stator 51 and rotating component 6, thereby actively eliminating road excitation. Alternatively, the braking function of the actuator assembly can be used to keep the vehicle at a certain height and save system energy. On paved highways, in order to reduce wind resistance and ensure good handling and stability, the active adjustment mode of the actuator assembly can be used to appropriately lower the vehicle's height, utilizing the braking function of the actuator assembly to keep the vehicle at a certain height. When the vehicle's sensors detect a bump ahead, the actuator assembly shuts off the braking mode and enters the energy recovery mode, using small vibrations from the road surface to recover energy.

[0135] The present invention also provides a suspension assembly including the actuator assembly described in any of the preceding claims. The suspension assembly utilizes the actuator assembly to achieve active adjustment of the vehicle to control vehicle body vibration and vehicle height, thereby improving vehicle stability during operation and enhancing vehicle ride comfort.

[0136] The present invention also provides a vehicle, including a body, wheels, and any of the aforementioned actuator assemblies or suspension assemblies, wherein the actuator assembly or suspension assembly is connected between the body and the wheels to realize the distance adjustment between the body and the wheels, thereby improving the stability of the vehicle during operation and improving the comfort of the vehicle ride.

[0137] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0138] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An actuator assembly, characterized in that, include: An actuator module, the actuator module including a movable element (2), the movable element (2) being movable along its axial direction; A brake (3) is disposed on the outer periphery of the moving member (2) and is used to press against the moving member (2) to restrict the movement of the moving member (2).

2. The actuator assembly according to claim 1, characterized in that, The brake (3) includes: A base (31) is provided with a through hole (32), and the moving part (2) passes through the through hole (32). The hole wall of the through hole (32) is provided with an opening. A braking assembly (30) is disposed within the seat (31), and a portion of the braking assembly (30) can extend from the opening to abut against the moving member (2).

3. The actuator assembly according to claim 2, characterized in that, The braking assembly (30) includes: A braking body (33), a portion of which can extend from the opening to abut against the moving member (2).

4. The actuator assembly according to claim 3, characterized in that, The surface of the brake body (33) near the moving part (2) is an arc surface, and the radius of curvature of the arc surface is the same as the radius of the moving part (2).

5. The actuator assembly according to claim 3, characterized in that, The braking assembly (30) also includes: The second driving member is connected to the brake body (33) and is used to drive the brake body (33) to extend out of the opening.

6. The actuator assembly according to claim 5, characterized in that, The second driving element includes: An air tube (34) is fixedly connected to the seat (31), and the air tube (34) is used to inject gas into the seat (31); A pneumatic piston (35) is movably connected to the seat (31), and the pneumatic piston (35) is used to push the brake body (33) out of the opening under the action of air pressure in the seat (31).

7. The actuator assembly according to claim 6, characterized in that, The second driving component also includes: An adjusting member (37) is connected to the seat (31) and the pneumatic piston (35) respectively. The adjusting member (37) can move in a direction perpendicular to the axis of the moving member (2) to adjust the position of the pneumatic piston (35) in the seat (31).

8. The actuator assembly according to claim 7, characterized in that, The adjusting element (37) is a screw.

9. The actuator assembly according to claim 7, characterized in that, The second driving component also includes: A first pusher (361) is disposed between the pneumatic piston (35) and the brake body (33), wherein the pneumatic piston (35) pushes the brake body (33) out of the opening through the first pusher (361); And / or, The second pusher (362) is disposed between the pneumatic piston (35) and the adjusting member (37), and the adjusting member (37) adjusts the position of the pneumatic piston (35) in the seat (31) by means of the second pusher (362).

10. The actuator assembly according to claim 9, characterized in that, The first pusher (361) and / or the second pusher (362) are rolling elements.

11. The actuator assembly according to claim 10, characterized in that, The surface on which the brake body (33) abuts against the first pusher (361) is an inclined surface.

12. The actuator assembly according to claim 1, characterized in that, The actuator module also includes: Housing component (1), wherein the brake (3) is disposed within the housing component (1).

13. The actuator assembly according to claim 12, characterized in that, The actuator module also includes: The first driving member (5) is disposed inside the housing member (1); A rotating component (6) is connected to the first driving component (5), which is used to drive the rotating component (6) to rotate. The rotating component (6) and the moving component (2) form a kinematic pair to convert the rotational motion of the rotating component (6) into the linear motion of the moving component (2).

14. The actuator assembly according to claim 13, characterized in that, The brake (3) is disposed on the side of the first drive member (5) near the vehicle body end; and / or, the brake (3) is disposed on the side of the first drive member (5) near the wheel end.

15. The actuator assembly according to claim 14, characterized in that, The housing component (1) includes a first housing (11) and a second housing (12), and the first housing (11) and the second housing (12) are fixedly connected; The movable member (2) passes through the second housing (12), and at least a portion of the movable member (2) extends into the first housing (11). The brake (3) is disposed in the first housing (11), and the first drive member (5) and the rotating member (6) are disposed in the second housing (12).

16. The actuator assembly according to claim 13, characterized in that, The moving part (2) is a lead screw, and the rotating part (6) is a lead screw nut. The moving part (2) and the rotating part (6) constitute a ball screw pair.

17. The actuator assembly according to claim 16, characterized in that, The first driving element (5) includes: The stator (51) is arranged along the axial direction of the moving member (2); The rotor (52) is arranged along the axial direction of the moving member (2) and is located inside the stator (51); the rotating member (6) is embedded inside the rotor (52) and is fixedly connected to the rotor (52).

18. The actuator assembly according to claim 17, characterized in that, The rotating component (6) has a connecting flange (65) at its axial end, and the connecting flange (65) extends radially along the rotating component (6). The rotating component (6) is connected to the rotor (52) via the connecting flange (65).

19. The actuator assembly according to claim 18, characterized in that, The connecting flange (65) is provided with a connecting hole (64), which is used to insert a fastener to detachably connect the rotating part (6) to the rotor (52).

20. The actuator assembly according to claim 15, characterized in that, The actuator module also includes: The first bearing (71) is sleeved on the side of the rotating member (6) near the first housing (11) to realize the axial upper limit and radial limit of the rotating member (6); And / or, The second bearing (72) is sleeved on the side of the rotating member (6) away from the first housing (11) to achieve the axial lower limit and radial limit of the rotating member (6).

21. The actuator assembly according to claim 20, characterized in that, The rotating component (6) includes a body section (61) and a connecting section (62); The connecting section (62) is provided on both sides of the body section (61) in the axial direction, and the outer diameter of the connecting section (62) is smaller than the outer diameter of the body section (61); The first bearing (71) and / or the second bearing (72) are fitted onto the connecting section (62).

22. The actuator assembly according to claim 20, characterized in that, The brake (3) is located on the side of the first bearing (71) away from the second bearing (72); And / or, The brake (3) is located on the side of the second bearing (72) away from the first bearing (71).

23. The actuator assembly according to claim 15, characterized in that, The first housing (11) is provided with: The first limiting part (111) protrudes from the inner wall of the first housing (11) and abuts against the surface of the brake (3) on the side opposite to the second housing (12) to restrict the axial movement of the brake (3).

24. The actuator assembly according to claim 23, characterized in that, The first housing (11) also includes: The second limiting part (112) protrudes from the inner wall of the first housing (11) and abuts against the outer peripheral surface of the brake (3) to restrict the circumferential movement of the brake (3).

25. The actuator assembly according to claim 24, characterized in that, The brake (3) has a limiting surface (310) on its outer peripheral surface. The limiting surface (310) is a planar structure and abuts against the second limiting part (112).

26. The actuator assembly according to claim 24, characterized in that, There are at least two second limiting parts (112), and at least two second limiting parts (112) are arranged at intervals around the brake (3).

27. The actuator assembly according to claim 24, characterized in that, The second limiting part (112) extends along the axial direction of the moving member (2) to connect with the first limiting part (111).

28. The actuator assembly according to claim 15, characterized in that, The first housing (11) has a flange edge (13) on the side near the second housing (12). The flange edge (13) extends radially along the first housing (11), and the first housing (11) is fixedly connected to the second housing (12) through the flange edge (13).

29. The actuator assembly according to claim 15, characterized in that, The end of the second housing (12) near the first housing (11) extends in the direction toward the moving member (2) to form a third limiting part (121), which abuts against the side of the brake (3) near the second housing (12) to restrict the axial movement of the brake (3).

30. The actuator assembly according to claim 15, characterized in that, The actuator module also includes: The lower fork arm (8) is fixedly connected to the side of the moving part (2) away from the second housing (12); An elastic support (9) is connected between the second housing (12) and the lower fork arm (8).

31. The actuator assembly according to claim 30, characterized in that, The actuator module also includes: A protective sleeve (91) is fitted onto the movable part (2) and located between the second housing (12) and the lower fork arm (8).

32. A suspension assembly, characterized in that, Includes the actuator assembly as described in any one of claims 1 to 31.

33. A vehicle, characterized in that, The vehicle includes a body, wheels, and an actuator assembly as described in any one of claims 1 to 31 or a suspension assembly as described in claim 32, wherein the actuator assembly or the suspension assembly is connected between the body and the wheels.

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