Actuator assembly, suspension and vehicle

Abstract

The utility model relates to an actuator assembly, a suspension and a vehicle, the actuator assembly comprises a first actuator and an air spring, the first actuator is suitable for being connected with a vehicle body end and a wheel end, and the air spring is arranged on the peripheral side of the first actuator in a sleeving mode, so that the space occupied by the first actuator in the axial direction is small, and the space utilization rate is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy, in particular to an actuator assembly, a suspension and a vehicle. BACKGROUND

[0002] In the related art, the first actuator and the air spring in the actuator assembly are arranged along the axial direction of the first actuator, so that the actuator assembly occupies a larger space in the axial direction of the first actuator, and the space utilization is low. CONTENT OF THE UTILITY MODEL

[0003] The actuator assembly, the suspension and the vehicle provided by the embodiments of the present application solve the above technical problems at least in part by arranging the first actuator inside the air spring and arranging the air spring outside the first actuator.

[0004] In order to achieve the above-mentioned purpose, according to a first aspect of the present application, an actuator assembly is provided, comprising:

[0005] a first actuator, one end of the first actuator being adapted to be connected to a vehicle body end, and the other end being adapted to be connected to a vehicle wheel end, so as to adjust the distance between the vehicle body end and the vehicle wheel end;

[0006] an air spring, one end of the air spring being adapted to be connected to the vehicle body end, and the other end being adapted to be connected to the vehicle wheel end, the air spring being arranged outside the first actuator.

[0007] Optionally, the first actuator comprises a driving member and a driving shaft connected to the driving member in a transmission manner, wherein the driving member is adapted to be connected to the vehicle body end, the driving shaft is adapted to be connected to the vehicle wheel end, and the driving member is adapted to drive the driving shaft to move in the axial direction of the first actuator.

[0008] Optionally, the driving member is arranged outside the driving shaft.

[0009] Optionally, the first actuator further comprises a transmission member, the transmission member being fixedly connected to the driving member and connected to the driving shaft, wherein the transmission member is used for converting the rotation of the driving member into the linear motion of the driving shaft.

[0010] Optionally, the driving member comprises a stator and a rotor which can rotate relative to each other, the transmission member (8-1) comprises a main body portion and a connecting portion arranged outside the main body portion, a ball screw pair is formed between the main body portion and the driving shaft, and the connecting portion is fixedly connected to the rotor.

[0011] Optionally, the transmission member comprises a first transmission member and a second transmission member, wherein the first transmission member is arranged at one end of the driving member close to the vehicle body end, and the second transmission member is arranged at the other end of the driving member close to the vehicle wheel end.

[0012] Optionally, the first actuator further comprises a drive member housing, an upper housing, an upper end cover and a lower end cover, the drive member housing, the upper housing, the upper end cover and the lower end cover jointly form a receiving cavity, the drive member and the transmission member are arranged in the receiving cavity.

[0013] Optionally, the upper housing is formed with a vehicle body connecting portion adapted to be connected with a vehicle body end.

[0014] Optionally, the first actuator further comprises a bearing member, the bearing member is arranged in the receiving cavity, and the bearing member is used for limiting the rotor.

[0015] Optionally, the bearing member comprises a first bearing, the first bearing is used for limiting the rotor in an axial direction.

[0016] Optionally, the bearing member further comprises a second bearing, the second bearing is used for limiting the rotor in a radial direction.

[0017] Optionally, the first bearing is a thrust ball bearing, and the second bearing is an angular contact ball bearing.

[0018] Optionally, the thrust ball bearing is located on a side of the angular contact ball bearing close to the connecting portion.

[0019] Optionally, the air spring is sleeved on an outer circumferential side of the drive member and the drive shaft.

[0020] Optionally, the air spring comprises an inner sleeve and an air bag, the air bag is connected to the inner sleeve to enclose at least a part of a first cavity, the inner sleeve is adapted to be connected with a wheel end, and the volume of the first cavity is changed under the driving of the drive shaft.

[0021] Optionally, the air bag is detachably connected to the inner sleeve.

[0022] Optionally, the air bag comprises a hooking portion, the hooking portion encloses a mounting cavity, and the mounting cavity is used for mounting a compression ring, the compression ring surrounds an outer side of the inner sleeve so that the hooking portion is pressed between the compression ring and the inner sleeve.

[0023] Optionally, the air spring further comprises an outer sleeve, and the outer sleeve is sleeved on an outer side of the inner sleeve so that the air bag abuts against an inner side of the outer sleeve.

[0024] Optionally, the air spring further comprises a top cover, and the air bag is connected to the top cover, wherein the top cover is adapted to be connected with a vehicle body end.

[0025] Optionally, the top cover is fixedly connected with an upper housing of the first actuator.

[0026] Optionally, the inner sleeve surrounds at least a portion of the second cavity.

[0027] Optionally, the inner sleeve further surrounds an outer periphery of the driving member, and a gap is provided between the inner sleeve and the driving member, the gap being in communication with the first cavity and the second cavity.

[0028] Optionally, a cavity valve is provided between the first cavity and the second cavity, the cavity valve being configured to control communication and separation between the first cavity and the second cavity.

[0029] Optionally, a cavity seal is provided between the first cavity and the second cavity, the cavity seal separating the first cavity and the second cavity.

[0030] Optionally, the actuator assembly further comprises a lower fork arm adapted to be connected to a wheel end, wherein the driving shaft is connected to the lower fork arm, and the inner sleeve is connected to the lower fork arm.

[0031] Optionally, one end of the driving shaft is located in the second cavity, and the inner sleeve is sealingly connected to the lower fork arm.

[0032] Optionally, a sleeve sealing ring is provided between the inner sleeve and the lower fork arm.

[0033] According to a second aspect of the present application, there is provided a suspension comprising the actuator assembly according to any one of the above embodiments.

[0034] According to a second aspect of the present application, there is provided a vehicle comprising the actuator assembly according to any one of the above embodiments, or the suspension according to any one of the above embodiments.

[0035] In the actuator assembly, the suspension and the vehicle according to the embodiments of the present application, the air spring is sleeved on the outer side of the first actuator, so that the space occupied by the first actuator in the axial direction is reduced, and the space utilization is improved.

[0036] Other features and advantages of the present application will be described in detail in the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the following embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0038] For a more complete understanding of the present application and the advantages thereof, reference is now made to the following descriptions taken in connection with the accompanying drawings in which like numbers represent like parts.

[0039] Figure 1 is a perspective view of an actuator assembly provided in an exemplary embodiment of the present disclosure;

[0040] Figure 2 is a cross-sectional view of the actuator assembly provided in an exemplary embodiment of the present disclosure at A-A section;

[0041] Figure 3 is an enlarged view of the first region 300 in the actuator assembly provided in an exemplary embodiment of the present disclosure; Figure 2

[0042] Figure 4 is an enlarged view of the second region 400 in the actuator assembly provided in an exemplary embodiment of the present disclosure. Figure 2

[0043] BRIEF DESCRIPTION OF DRAWINGS

[0044] 1, body connecting portion; 2, upper housing; 3, drive shaft; 4, top nut; 5, bearing member; 5-1, first bearing; 5-2, second bearing; 6-1, rotor; 6-2, stator; 7-1, upper end cover; 7-2, drive member housing; 7-3, lower end cover; 8, transmission member; 8-1, first transmission member; 8-2, second transmission member; 8-3, main body portion; 8-4, connecting portion; 9, bolt; 10, lower fork arm; 11, air spring; 11-1, air bag; 11-2, inner sleeve; 11-3, outer sleeve; 11-4, top cover; 11-5, hooking portion; 11-6, compression ring; 11-7, first cavity; 11-8, second cavity; 12, dust cover; 13, sleeve sealing ring; 100, first actuator; 200, drive member; 300, first region; 400, second region. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be clearly and completely described in connection with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0046] According to the first aspect of the present application, please refer to Figures 1 to 2 ​​The actuator assembly provided by the present disclosure comprises a first actuator 100 and an air spring 11, one end of the first actuator 100 is adapted to be connected with the vehicle body end, and the other end is adapted to be connected with the vehicle wheel end, so as to adjust the distance between the vehicle body end and the vehicle wheel end; one end of the air spring 11 is adapted to be connected with the vehicle body end, and the other end is adapted to be connected with the vehicle wheel end, and the air spring 11 is sleeved on the outer circumferential side of the first actuator 100.

[0047] In the present embodiment, the air spring 11 is sleeved on the outer side of the first actuator 100, so that the space occupied by the first actuator 100 in the axial direction is small, the space utilization is improved, and the technical problems of large axial space occupation and low space utilization of the actuator assembly in the prior art are alleviated.

[0048] In one embodiment, referring to Figure 2 , the first actuator 100 comprises a driving member 200 and a driving shaft 3 connected with the driving member 200, wherein the driving member 200 is adapted to be connected with the vehicle body end, the driving shaft 3 is adapted to be connected with the vehicle wheel end, and the driving member 200 is adapted to drive the driving shaft 3 to move in the axial direction of the first actuator 100.

[0049] Wherein, the relative movement between the vehicle body end and the vehicle wheel end is realized by driving the driving shaft 3 through the driving member 200.

[0050] In one embodiment, the driving member 200 is sleeved on the outer circumferential side of the driving shaft 3.

[0051] Wherein, the axial space of the first actuator 100 can be saved.

[0052] Wherein, the driving member 200 can be a motor.

[0053] In one embodiment, the first actuator 100 further comprises a transmission member 8, the transmission member 8 is fixedly connected with the driving member 200 and connected with the driving shaft 3, and the transmission member 8 is used to convert the rotation of the driving member 200 into the linear motion of the driving shaft 3.

[0054] In one embodiment, the driving member 200 comprises a stator 6-2 and a rotor 6-1 which can rotate relative to each other, the transmission member 8 comprises a main body part 8-3 and a connecting part 8-4 provided on the outer circumferential side of the main body part 8-3, a ball screw pair is formed between the main body part 8-3 and the driving shaft 3, and the connecting part 8-4 is fixedly connected with the rotor 6-1.

[0055] Wherein, the driving shaft 3 can be a screw shaft, the transmission member 8 can be a nut, and the transmission member 8 is threadedly connected with the driving shaft 3.

[0056] It can be understood that the rotor 6-1 is fixedly connected with the connecting part 8-4, so that the rotation of the rotor can drive the driving member 200 to rotate through the connecting part 8-4, the main part 8-3 in the roller screw pair can drive the driving shaft 3 to rotate, and then the axial movement of the driving shaft 3 is realized, so that the relative movement between the vehicle body end and the wheel end is realized.

[0057] In an embodiment, the transmission member 8 includes a first transmission member 8-1 and a second transmission member 8-2, wherein the first transmission member 8-1 is arranged at one end of the driving member 200 close to the vehicle body end, and the second transmission member 8-2 is arranged at the other end of the driving member 200 close to the wheel end.

[0058] It can be understood that two or more transmission members 8 are connected to the same driving shaft 3, which can reduce the control difficulty, and the synchronous rotation of the multiple transmission members 8 makes the movement of the driving shaft 3 more stable.

[0059] The model of the first transmission member 8-1 and the second transmission member 8-2 can be the same, so that the movement of the driving shaft 3 is more stable.

[0060] The first transmission member 8-1 abuts against the top end of the rotor 6-1 to realize the fixed connection between the first transmission member 8-1 and the rotor 6-1. The second transmission member 8-2 abuts against the bottom end of the rotor 6-1 to realize the fixed connection between the second transmission member 8-2 and the rotor 6-1.

[0061] In an embodiment, the first actuator 100 further includes a driving member housing 7-2, an upper housing 2, an upper end cover 7-1 and a lower end cover 7-3, the driving member housing 7-2, the upper housing 2, the upper end cover 7-1 and the lower end cover 7-3 jointly form a containing cavity, and the driving member 200 and the transmission member 8 are arranged in the containing cavity. The upper end cover 7-1 is fixedly connected to the upper end of the driving member housing 7-2, and the lower end cover 7-3 is fixedly connected to the lower end of the driving member housing 7-2.

[0062] In an embodiment, the first actuator 100 further includes a bearing member 5 arranged in the containing cavity, and the bearing member 5 is used for limiting the rotor 6-1. The upper end cover 7-1 and the lower end cover 7-3 can provide mounting positions for the bearing member 5.

[0063] It can be understood that the bearing member 5 can limit the rotor 6-1, reduce the deviation of the rotor 6-1 in the axial and radial directions during rotation, and make the rotation of the rotor 6-1 more stable.

[0064] In an embodiment, the bearing member 5 includes a first bearing 5-1 used for limiting the rotor 6-1 in the axial direction.

[0065] It can be understood that the first bearing 5-1 limits the movement of the rotor 6-1 in the axial direction, so that the rotation of the rotor 6-1 is more stable.

[0066] In an embodiment, the bearing member 5 further comprises a second bearing 5-2, the second bearing 5-2 is used to limit the radial direction of the rotor 6-1.

[0067] It can be understood that the second bearing 5-2 limits the movement of the rotor 6-1 in the radial direction, so that the rotation of the rotor 6-1 is more stable.

[0068] In an embodiment, the first bearing 5-1 is a thrust ball bearing, and the second bearing 5-2 is an angular contact ball bearing.

[0069] It can be understood that by respectively arranging the thrust ball bearing and the angular contact ball bearing, the thrust ball bearing is used to limit the axial direction of the rotor 6-1, and the angular contact ball bearing is used to limit the radial direction of the rotor 6-1, so as to respectively limit the axial direction and the radial direction of the rotor 6-1.

[0070] In an embodiment, the thrust ball bearing is located on the side of the angular contact ball bearing close to the connecting portion 8-4.

[0071] Since the connecting portion 8-4 abuts against the top end or the bottom end of the rotor 6-1, the thrust ball bearing close to the connecting portion 8-4 can better limit the axial direction of the rotor 6-1.

[0072] In an embodiment, the bearing member 5 comprises two thrust ball bearings and two angular contact ball bearings. The two thrust ball bearings are respectively arranged around the top end and the bottom end of the outer side of the drive shaft 3, and the two angular contact ball bearings are respectively arranged around the top end and the bottom end of the outer side of the screw shaft.

[0073] It can be understood that by arranging the two thrust ball bearings and the two angular contact ball bearings and respectively arranging them on the top end and the bottom end of the drive shaft 3, the movement of the drive shaft 3 is more stable.

[0074] In an embodiment, only the second bearing 5-2 can be arranged. The second bearing member 5-2 comprises at least two angular contact ball bearings, the at least two angular contact ball bearings are respectively arranged around the top end and the bottom end of the outer side of the screw shaft, and the two angular contact ball bearings are used to limit the radial direction of the rotor 6-1.

[0075] It can be understood that since the axial impact force is small, the two first bearings 5-1 can be cancelled, and only the two second bearings 5-2 are arranged. The second bearing 5-2 can also be used to bear the axial force, so as to simultaneously meet the requirements of limiting the axial direction and the radial direction of the rotor 6-1.

[0076] In the embodiment, since the first bearing 5-1 is omitted, the process can be simplified, and the cost can be reduced.

[0077] In an embodiment, please continue to refer to Figure 2The air spring 11 can play a role of supporting and buffering, and is sleeved on the outer circumferential side of the driving member 200 and the driving shaft 3.

[0078] It can be understood that the air spring 11 is sleeved on the outer circumferential side of the driving member 200 and the driving shaft 3, and the space occupied by the first actuator 100 in the axial direction is saved.

[0079] In an embodiment, the air spring 11 comprises an inner sleeve 11-2 and an air bag 11-1, the air bag 11-1 is connected to the inner sleeve 11-2 to enclose at least part of the first cavity 11-7, and the inner sleeve 11-2 is adapted to be connected to the wheel end to change the volume of the first cavity 11-7 under the driving of the driving shaft 3.

[0080] It can be understood that the function of the air spring can be realized by changing the volume of the first cavity 11-7.

[0081] In an embodiment, the air bag 11-1 is detachably connected to the inner sleeve 11-2.

[0082] The upper end of the inner sleeve 11-2 is detachably connected to the air bag 11-1, and the lower end of the inner sleeve 11-2 is detachably connected to the lower fork arm 10. It can be understood that when the driving shaft 3 is maintained, only the inner sleeve 11-2 needs to be disassembled, and the operation of adding lubricating oil to the driving shaft 3 can be completed, without the need to disassemble the entire air spring 11, thereby simplifying the maintenance process and reducing the cost. And by sealing the driving shaft 3 and the lubricating liquid in the air spring 11 in advance, the service life of the lubricating liquid is improved.

[0083] It should be noted that since the air spring 11 is sealingly arranged between the lower fork arm 10, and the top end of the air spring 11 is also sealingly arranged with the upper shell 2, the driving shaft 3 can be sealingly arranged in the air spring 11, and the driving shaft 3 is wrapped by the lubricating oil, which is relative to the prior art that a part of the driving shaft 3 extends out of the air spring 11, so that the driving shaft 3 cannot be sealingly wrapped by the lubricating oil. The design of the embodiment enhances the lubrication effect of the driving shaft 3.

[0084] In an embodiment, please refer to Figure 3 , Figure 3 is Figure 2 an enlarged schematic view of the first region 300 in FIG. 3, the air bag 11-1 comprises a hooking portion 11-5, the hooking portion 11-5 encloses a mounting cavity, wherein the mounting cavity is used for mounting a compression ring 11-6, the compression ring 11-6 surrounds the outer side of the inner sleeve 11-2 so that the hooking portion 11-5 is pressed between the compression ring 11-6 and the inner sleeve 11-2.

[0085] The pressing ring 11-6 is arranged around the outer side of the inner sleeve 11-2, so that the hooking part 11-5 is pressed between the pressing ring 11-6 and the inner sleeve 11-2, the detachable connection between the air bag 11-1 and the inner sleeve 11-2 can be achieved, and the sealing effect of the air bag 11-1 can be enhanced.

[0086] In an embodiment, please continue to refer to Figure 2 The air spring 11 further comprises an outer sleeve 11-3, wherein the outer sleeve 11-3 is sleeved on the outer side of the inner sleeve 11-2, so that the air bag 11-1 abuts against the inner side of the outer sleeve 11-3.

[0087] The air bag 11-1 can form a first cavity 11-7 with a relatively stable shape.

[0088] In an embodiment, the air spring 11 further comprises a top cover 11-4, and the air bag 11-1 is connected to the top cover 11-4. The top cover 11-4 is fixed with the upper shell 2 through a top nut 4 and is fixedly connected with the vehicle body end of the first actuator 100 through the upper shell 2, so as to be connected to the vehicle body end. In this way, the fixation of the air spring 11 can be achieved.

[0089] In an embodiment, the top cover 11-4 is provided with an air nozzle, and the air nozzle is used for inflating the first cavity 11-7. When the first cavity 11-7 is inflated, the air nozzle is opened, and the gas enters the first cavity 11-7 from the air nozzle.

[0090] In an embodiment, the inner sleeve 11-2 surrounds at least part of a second cavity 11-8.

[0091] The connection relationship between the first cavity 11-7 and the second cavity 11-8 can be changed to realize the air spring with double chambers or single chamber.

[0092] In an embodiment, the inner sleeve 11-2 is further sleeved on the outer circumferential side of the driving member 200, so as to be provided with a gap between the driving member 200, and the gap is communicated with the first cavity 11-7 and the second cavity 11-8.

[0093] The air spring 11 can have a cavity with a large volume. In addition, there is a gap between the upper end of the inner sleeve 11-2 and the driving member housing 7-2 of the driving member 200, so that the inner sleeve 11-2 can move in parallel and axially on the outer side of the driving member housing 7-2 without interference.

[0094] In an embodiment, a cavity valve is arranged between the first cavity 11-7 and the second cavity 11-8, and the cavity valve is configured to control the communication and isolation between the first cavity 11-7 and the second cavity 11-8. It can be understood that, by arranging the gas valve between the inner sleeve 11-2 and the drive shaft housing 7-2, and arranging the bearing component to support the relative movement between the inner sleeve 11-2 and the drive shaft housing 7-2, the communication and isolation between the first cavity 11-7 and the second cavity 11-8 can be controlled, so as to form the double-cavity air spring 11.

[0095] It can be understood that the double-cavity air spring has higher rigidity, which is beneficial to the stability of the structure of the air spring 11.

[0096] The gas valve can be a CRC (Controlled Relief Valve) valve. The bearing component can be any one of a sliding bearing or a ball bearing.

[0097] In an embodiment, a cavity seal is arranged between the first cavity 11-7 and the second cavity 11-8, and the cavity seal isolates the first cavity 11-7 from the second cavity 11-8. It can be understood that, by isolating the first cavity 11-7 from the second cavity 11-8 through the cavity seal, the cavity actually producing the buffering effect in the air spring 11 is only the first cavity 11-7.

[0098] In an embodiment, the lower fork arm 10 is further arranged, and the lower fork arm 10 is adapted to be connected with the wheel end. The drive shaft 3 is connected to the lower fork arm 10, and the inner sleeve 11-2 is connected to the lower fork arm 10.

[0099] The drive shaft 3 is fixedly connected to the lower fork arm 10, so that the drive shaft 3 can move along the axial direction, and the drive shaft 3 is prevented from moving radially, so that the movement of the drive shaft 3 is more stable.

[0100] In an embodiment, one end of the drive shaft 3 is located in the second cavity 11-8, and the inner sleeve 11-2 is sealingly connected to the lower fork arm 10.

[0101] It can be understood that, by sealing the lower end of the accommodating cavity of the inner sleeve 11-2 and the lower fork arm 10, the drive shaft 3 is sealed in the accommodating cavity, so as to better protect and lubricate the drive shaft 3, and improve the service life of the drive shaft 3.

[0102] In an embodiment, please refer to Figure 4 , Figure 4 is Figure 2 an enlarged schematic view of the second region 400 in FIG. 4. The inner sleeve 11-2 and the lower fork arm 10 are provided with a sleeve sealing ring 13. The sleeve sealing ring 13 can be provided in plurality. The sleeve sealing ring 13 is configured to enhance the sealing effect between the inner sleeve 11-2 and the lower fork arm 10.

[0103] It can be understood that the protection sleeve sealing ring 13 realizes the sealing of the first chamber and the second chamber of the air spring 11 through the contact with the inner protection sleeve 11-2.

[0104] In an embodiment, the actuator assembly further comprises a dust cover 12, which is sleeved on the outer side of the lower end of the inner protection sleeve 11-2 and the lower fork arm 10 and connected between the lower fork arm 10 and the outer protection sleeve 11-3.

[0105] It can be understood that the dust cover 12 plays a dustproof role.

[0106] The dust cover 12 is further sleeved on the outer side of the lower end of the outer protection sleeve 11-3, so that the dust cover 12 can better play a dustproof effect.

[0107] In an embodiment, the bottom end of the drive shaft 3 is formed with a threaded hole, and the bottom end of the drive shaft 3 is fixedly connected with the lower fork arm 10 through a bolt 9.

[0108] It can be understood that the fixed connection of the lower fork arm 10 and the drive shaft 3 through the bolt 9 can make the drive shaft 3 move more stably in the axial direction.

[0109] The working principle of the present application is that the rotor 6-1 and the stator 6-2 make the rotor 6-1 produce rotary motion through electromagnetic action, and the transmission member 8 rotates together with the rotor 6-1; since the drive shaft 3 is fixed with the lower fork arm 10, the drive shaft 3 can only move in the axial direction, and the drive shaft 3 converts the rotary motion of the transmission member 8 into axial motion, so that the lower fork arm 10 moves in the axial direction, the lower fork arm 10 is connected with the wheel end, and thus the height of the whole suspension can be controlled.

[0110] The present application concentrates the drive member 200 and the drive shaft 3 in the first actuator 100, uses the air spring 11 to be sleeved on the outer side of the first actuator 100, so that the first actuator 100 is arranged on the edge of the air spring 11 in the axial direction, and the first actuator 100 is sealed inside the air spring 11, thereby improving the utilization rate of the axial space.

[0111] At the same time, since the first actuator 100 is sealed inside the air spring 11, lubricating oil can be filled inside the air spring 11 to make the drive shaft 3 better lubricated.

[0112] At the same time, the top end and the bottom end of the inner protection sleeve 11-2 are detachably connected, and when the drive shaft 3 is maintained, the maintenance of the drive shaft 3 can be completed by only disassembling the inner protection sleeve 11-2, thereby simplifying the process and reducing the maintenance cost.

[0113] According to the second aspect of the present application, a suspension is provided, which comprises the actuator assembly according to any one of the above embodiments.

[0114] According to a second aspect of the present application, there is provided a vehicle comprising an actuator assembly as in any of the preceding embodiments, or a suspension as in any of the preceding embodiments.

[0115] In the description of the present application, the terms "first", "second", etc. are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality of" is 2 or more than 2, unless otherwise specifically limited.

[0116] In the above embodiments, the description of each embodiment is focused on, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0117] The embodiments, implementation manners and related technical features of the present application can be combined or replaced with each other without conflict.

[0118] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification, equivalent change and modification made to the above embodiment without departing from the technical solution of the present application and according to the technical essence of the present application still belongs to the scope of the technical solution of the present application.

Claims

1. An actuator assembly comprising: The application relates to a first actuator, one end of which is adapted to be connected with a vehicle body end and the other end is adapted to be connected with a wheel end, so as to adjust the distance between the vehicle body end and the wheel end; and an air spring, one end of which is adapted to be connected with the vehicle body end and the other end is adapted to be connected with the wheel end, the air spring being sleeved on the outer periphery of the first actuator. The first actuator comprises a driving member and a driving shaft connected with the driving member, wherein the driving member is adapted to be connected with the vehicle body end, the driving shaft is adapted to be connected with the wheel end, and the driving member can drive the driving shaft to move in the axial direction of the first actuator. The driving member is sleeved on the outer periphery of the driving shaft.

2. The actuator assembly of claim 1, wherein The first actuator further comprises a transmission member connected with the driving member and the driving shaft, wherein the transmission member is used for converting the rotary motion of the driving member into the linear motion of the driving shaft.

3. The actuator assembly of claim 2, wherein, The driving member comprises a stator and a rotor which can rotate relative to each other, the transmission member comprises a main body and a connecting part arranged on the outer periphery of the main body, a ball screw pair is formed between the main body and the driving shaft, and the connecting part is fixedly connected with the rotor.

4. The actuator assembly of claim 3, wherein, The transmission member comprises a first transmission member and a second transmission member, wherein the first transmission member is arranged at one end of the driving member close to the vehicle body end, and the second transmission member is arranged at the other end of the driving member close to the wheel end.

5. The actuator assembly of claim 4, wherein, The first actuator further comprises a driving member shell, an upper shell, an upper end cover and a lower end cover, which jointly form a containing cavity, and the driving member and the transmission member are arranged in the containing cavity.

6. The actuator assembly of claim 5, wherein, The upper shell is provided with a vehicle body connecting part adapted to be connected with the vehicle body end.

7. The actuator assembly of claim 5, wherein, The first actuator further comprises a bearing member arranged in the containing cavity, and the bearing member is used for limiting the rotor.

8. The actuator assembly of claim 7, wherein, The bearing member comprises a first bearing used for limiting the rotor in the axial direction.

9. The actuator assembly of claim 7, wherein, The bearing member further comprises a second bearing used for limiting the rotor in the radial direction.

10. The actuator assembly of claim 9, wherein, The first bearing is a thrust ball bearing, and the second bearing is an angular contact ball bearing.

11. The actuator assembly of claim 10, wherein, The thrust ball bearing is located on the side of the angular contact ball bearing close to the connecting part.

12. The actuator assembly of claim 11, wherein, The air spring is sleeved on the outer periphery of the driving member and the driving shaft.

13. The actuator assembly of claim 12, wherein, The air spring comprises an inner sleeve and an air bag, the air bag is connected with the inner sleeve to enclose at least part of a first cavity, the inner sleeve is adapted to be connected with the wheel end, and the volume of the first cavity can be changed under the driving of the driving shaft.

14. The actuator assembly of any one of claims 2 to 13, wherein, The air bag is detachably connected with the inner sleeve.

15. The actuator assembly of claim 14, wherein, The air bag comprises a hooking part which encloses a mounting cavity, wherein the mounting cavity is used for mounting a compression ring, the compression ring surrounds the outer side of the inner sleeve so that the hooking part is pressed between the compression ring and the inner sleeve.

16. The actuator assembly of claim 15, wherein, The air spring further comprises an outer sleeve, wherein the outer sleeve is sleeved on the outer side of the inner sleeve so that the air bag abuts against the inner side of the outer sleeve.

17. The actuator assembly of claim 16, wherein ​ 18. The actuator assembly of claim 15, wherein, ​ 19. The actuator assembly of claim 18, wherein, The air spring further comprises a top cover, and the air bag is connected to the top cover, wherein the top cover is adapted to be connected to a vehicle body end.

20. The actuator assembly of claim 19, wherein, The top cover is fixedly connected to an upper housing of the first actuator.

21. The actuator assembly of claim 15, wherein, The inner sleeve surrounds at least a portion of a second cavity.

22. The actuator assembly of claim 21, wherein The inner sleeve is further sleeved on an outer circumferential side of the driving member, so as to form a gap between the inner sleeve and the driving member, and the gap is communicated with the first cavity and the second cavity.

23. The actuator assembly of claim 21, wherein, A cavity valve is arranged between the first cavity and the second cavity, and the cavity valve is used to control the communication and separation between the first cavity and the second cavity.

24. The actuator assembly of claim 21, wherein, A cavity sealing member is arranged between the first cavity and the second cavity, and the cavity sealing member separates the first cavity and the second cavity.

25. The actuator assembly of claim 21, wherein, A lower fork arm is further included, and the lower fork arm is adapted to be connected to a vehicle wheel end, wherein the driving shaft is connected to the lower fork arm, and the inner sleeve is connected to the lower fork arm.

26. The actuator assembly of claim 25, wherein, One end of the driving shaft is located in the second cavity, and the inner sleeve is sealingly connected to the lower fork arm.

27. The actuator assembly of claim 26, wherein A sleeve sealing ring is arranged between the inner sleeve and the lower fork arm.

28. A suspension characterized by An actuator assembly as claimed in any one of claims 1 to 27 is included.

29. A vehicle characterized by A suspension as claimed in claim 28, or an actuator assembly as claimed in any one of claims 1 to 27 is included.

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