Actuator, suspension assembly and vehicle

Abstract

The utility model discloses an actuator, a suspension assembly and a vehicle, and relates to the technical field of vehicles. The actuator comprises an actuator shell, a lead screw and a nut, the nut is rotatably installed on the actuator shell, the nut is in threaded connection fit with the lead screw, and the nut can drive the lead screw to move linearly when rotating; wherein a guide structure is arranged between the lead screw and the actuator shell, and the guide structure is used for guiding the lead screw, so that the lead screw moves linearly. According to the actuator provided by the utility model, the guide structure arranged between the lead screw and the actuator shell can guide the linear motion of the lead screw, so that the stability of the lead screw in the axial reciprocating motion process can be enhanced, and the working principle is simple and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to an actuator, a suspension assembly with the actuator, and a vehicle with the suspension assembly. Background Art

[0002] In the related art, the actuator includes a driving component, a nut and a lead screw. The driving component drives the nut to rotate, and the rotation of the nut drives the lead screw to move linearly back and forth. However, the lead screw is unstable during linear movement and is prone to eccentricity, which leads to eccentric wear of the lead screw, abnormal noise of the mechanism, failure, etc. Therefore, there is room for improvement. Utility Model Content

[0003] The utility model aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent. To this end, the utility model provides an actuator that can enhance the stability of the lead screw during the linear reciprocating movement.

[0004] The utility model also provides a suspension assembly with the actuator.

[0005] The utility model also provides a vehicle with the suspension assembly.

[0006] The actuator according to the embodiment of the utility model includes: an actuator housing, a lead screw and a nut, wherein the nut is rotatably mounted on the actuator housing, the nut is threadedly engaged with the lead screw, and the nut can drive the lead screw to move linearly when it rotates; wherein a guide structure is provided between the lead screw and the actuator housing, and the guide structure is used to guide the lead screw so that the lead screw moves linearly.

[0007] According to the actuator of the embodiment of the utility model, the guide structure arranged between the lead screw and the actuator housing can guide the linear movement of the lead screw, which is beneficial to enhancing the stability of the lead screw during the axial reciprocating motion, and the working principle is simple and reliable.

[0008] According to some embodiments of the present utility model, the guide structure includes a guide rod, the guide rod is connected to the actuator housing, the lead screw has a guide groove, and when the lead screw moves linearly, the guide rod at least partially extends into the guide groove.

[0009] According to some embodiments of the present invention, in the linear movement direction of the lead screw, the depth of the guide groove is greater than the movement stroke of the lead screw.

[0010] According to some embodiments of the present invention, the length of the guide rod is less than or equal to the moving stroke of the lead screw.

[0011] According to some embodiments of the utility model, the actuator housing has an installation cavity inside, the nut is located in the installation cavity, a matching cavity is formed between one end of the guide rod extending into the guide groove and the bottom of the guide groove, and a ventilation channel is provided on the guide rod, and the ventilation channel connects the matching cavity and the installation cavity.

[0012] According to some embodiments of the utility model, the guide structure further includes a sliding bearing, and the sliding bearing is arranged at the guiding matching position between the guide rod and the guide groove.

[0013] According to some embodiments of the utility model, the outer peripheral wall of the guide rod and the inner peripheral wall of the guide groove are separated by the sliding bearing, one end of the ventilation channel is connected to the outer peripheral wall of the guide rod, and the other end of the ventilation channel is connected to an end surface of the guide rod extending into the guide groove.

[0014] According to some embodiments of the utility model, the actuator housing has an installation cavity inside, the nut is located in the installation cavity, one end of the nut is rotatably supported at a first position of the actuator housing through a first bearing, and the other end of the nut is rotatably supported at a second position of the actuator housing through a second bearing, and the first bearing and the second bearing are spaced apart along the axial direction of the nut.

[0015] According to some embodiments of the utility model, the interior of the actuator housing has a first axial limit surface and a second axial limit surface, the nut has a first limit shoulder and a second limit shoulder, one axial end of the first bearing abuts against the first limit shoulder, and the other axial end of the first bearing abuts against the first axial limit surface, one axial end of the second bearing abuts against the second limit shoulder, and the other axial end of the second bearing abuts against the second axial limit surface.

[0016] According to some embodiments of the utility model, the actuator housing has an inner circumferential surface of the housing opposite to the outer circumferential surface of the lead screw, and the guide structure includes a guide ring, the inner circumferential surface of the guide ring is installed on the outer circumferential surface of the lead screw, and the outer circumferential surface of the guide ring is slidably matched with the inner circumferential surface of the housing.

[0017] According to some embodiments of the present invention, the actuator further includes a driving component, and the driving component is used to drive the nut to rotate.

[0018] According to some embodiments of the utility model, the driving component includes a stator assembly and a mover assembly, the stator assembly is installed on the actuator housing and includes a stator core and a stator winding, the stator winding is wound around the stator core, the mover assembly is installed on the nut and includes at least a magnetic component, and the stator assembly is used to excite the mover assembly to rotate to drive the nut to rotate.

[0019] According to some embodiments of the utility model, a first circumferential protrusion and a second circumferential protrusion are provided on the nut, and the first circumferential protrusion and the second circumferential protrusion both protrude radially outward along the nut, one axial end of the movable assembly abuts against the first circumferential protrusion, and the other axial end of the movable assembly abuts against the second circumferential protrusion.

[0020] According to some embodiments of the utility model, the actuator also includes a stator positioning ring, the interior of the actuator housing has a first positioning surface and a second positioning surface, the stator assembly and the stator positioning ring are located between the first positioning surface and the second positioning surface, one axial end of the stator positioning ring abuts against the first positioning surface, the other axial end of the stator positioning ring abuts against the stator assembly, and one axial end of the stator assembly away from the stator positioning ring abuts against the second positioning surface.

[0021] According to some embodiments of the utility model, at least a portion of the structure of the actuator housing is suitable for connection to the vehicle body, one end of the lead screw is suitable for connection to the wheel, and the lead screw is suitable for adjusting the distance between the vehicle body and the wheel when moving linearly.

[0022] According to some embodiments of the utility model, the actuator also includes: a vehicle body connection structure and a wheel connection structure, one end of the lead screw is located in the actuator housing, and the other end of the lead screw is suitable for extending out of the actuator housing to be connected to the wheel through the wheel connection structure, and the actuator housing is suitable for being connected to the vehicle body through the vehicle body connection structure.

[0023] According to some embodiments of the present utility model, the actuator further includes an elastic support member, which is sleeved outside the lead screw and located between the wheel connection structure and the actuator housing.

[0024] According to some embodiments of the utility model, the actuator also includes a dustproof sleeve, which is arranged outside the screw and located between the wheel connecting structure and the actuator housing, the actuator housing has a housing hole for the screw to extend out, the dustproof sleeve has a dustproof space, and the housing hole is located in the dustproof space.

[0025] The suspension assembly according to the embodiment of the second aspect of the utility model includes the above-mentioned actuator.

[0026] According to the suspension assembly of the embodiment of the utility model, the guide structure arranged between the screw of the actuator and the actuator housing can guide the linear movement of the screw, which is beneficial to enhance the stability of the screw during axial reciprocating motion, and the working principle is simple and reliable.

[0027] A vehicle according to an embodiment of the third aspect of the utility model includes the above-mentioned suspension assembly.

[0028] According to the vehicle of the embodiment of the utility model, its suspension assembly includes an actuator, and the guide structure arranged between the actuator's lead screw and the actuator housing can guide the linear movement of the lead screw, which is beneficial to enhancing the stability of the lead screw during axial reciprocating motion, and the working principle is simple and reliable.

[0029] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a front view of an actuator according to an embodiment of the utility model;

[0031] Figure 2 yes Figure 1 Sectional view of AA in the middle;

[0032] Figure 3 yes Figure 2 A partial enlarged schematic diagram of point B in the middle;

[0033] Figure 4 yes Figure 2 A partial enlarged schematic diagram of point C in the middle;

[0034] Figure 5 It is a three-dimensional schematic diagram of the actuator housing, guide structure and stud structure;

[0035] Figure 6 It is the front view of the actuator housing and stud structure;

[0036] Figure 7 yes Figure 6 Cross-sectional view of the middle DD;

[0037] Figure 8 yes Figure 7 A partial enlarged schematic diagram of point E in the middle;

[0038] Fig. 9 yes Figure 7 A partial enlarged schematic diagram of point F in the middle;

[0039] Fig.10 is a schematic diagram of a suspension assembly according to an embodiment of the utility model;

[0040] Fig.11 is a schematic diagram of a vehicle according to an embodiment of the utility model.

[0041] Reference numerals:

[0042] Vehicle 1000, suspension assembly 100, actuator 10, actuator housing 1, first housing 11, first housing body 111, first housing flange 112, first mounting hole 1121, travel space 113, first stop structure 114, first axial stop surface 1141, first circumferential stop surface 1142, housing inner circumferential surface 115, second housing 12, motor mounting space 120, second housing body 121, second lower mounting hole 1211, second housing end plate 122, second upper mounting hole 1221, first bearing mounting seat 123, first axial limiting surface 1231, first circumferential mounting surface 1232, second through hole 124, third housing 13, housing hole 131, end cover space 132, second bearing mounting seat 133, second axial limiting surface 1331, second circumferential The mounting surface 1332, the second stop structure 134, the second axial stop surface 1341, the second circumferential stop surface 1342, the third mounting hole 135, the mounting cavity 14, the screw 2, the guide groove 21, the nut 3, the first limit shoulder 31, the second limit shoulder 32, the first circumferential protrusion 33, the second circumferential protrusion 34, the guide structure 4, the guide rod 41, the ventilation channel 411, the first channel section 4111, the second channel section 4112, the sliding bearing 42, the guide ring 43, the matching cavity 5, the driving component 6, the stator assembly 61, the mover assembly 62, the stator positioning ring 7, the first positioning surface 81, the second positioning surface 82, the stator matching surface 83, the first bearing 91, the second bearing 92, the stud structure 93, the wheel connecting structure 94, the elastic support 95, the dust cover 96, and the fastener 97. DETAILED DESCRIPTION

[0043] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0044] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0045] Combine the following Figure 1-Figure 11 An actuator 10 , a suspension assembly 100 having the actuator 10 , and a vehicle 1000 having the suspension assembly 100 according to an embodiment of the present invention are described in detail.

[0046] Reference Figure 1-Figure 2 As shown, the actuator 10 according to the embodiment of the present invention may include an actuator housing 1 , a lead screw 2 and a nut 3 .

[0047] The nut 3 is rotatably mounted on the actuator housing 1, and the nut 3 is threadedly engaged with the lead screw 2. When the nut 3 rotates, the lead screw 2 can be driven to move linearly. The nut 3 is coaxially engaged with the lead screw 2, and a spiral raceway can be provided on the nut 3. A rolling body is provided in the spiral raceway. The rolling body is in rolling contact with the lead screw 2, and power can be transmitted through the rolling body.

[0048] A guide structure 4 is provided between the lead screw 2 and the actuator housing 1 , and the guide structure 4 is used to guide the lead screw 2 so that the lead screw 2 moves linearly.

[0049] Specifically, when the nut 3 rotates, the lead screw 2 can be driven to rotate. Since the nut 3 is mounted on the actuator housing 1, the lead screw 2 will generate linear movement while rotating. That is to say, the lead screw 2 will reciprocate along the axial direction of the lead screw 2 while rotating. Figure 2 The guide structure 4 is used to limit and guide the lead screw 2. Under the guidance of the guide structure 4, the lead screw 2 can be effectively prevented from being off-axis during movement, thereby reducing the risks of eccentric wear of the lead screw 2, abnormal noise of the mechanism, and failure, and further enhancing the stability of the lead screw 2 during axial reciprocating motion.

[0050] Reference Figure 1-Figure 2 As shown, the actuator housing 1 can be used to provide a housing space for the guide structure 4, the lead screw 2 and the nut 3. In this way, the actuator housing 1 can provide protection for the guide structure 4, the lead screw 2 and the nut 3, and reduce the chance of damage to the guide structure 4, the lead screw 2 and the nut 3.

[0051] According to the actuator 10 of the embodiment of the utility model, the guide structure 4 arranged between the screw 2 and the actuator housing 1 can guide the linear movement of the screw 2, which is beneficial to enhance the stability of the screw 2 during the axial reciprocating motion. The working principle is reliable, the structure is simple, the machinability is high, and the disassembly and assembly are convenient.

[0052] In some embodiments of the present invention, referring to Figure 1-Figure 2 and Figure 7As shown, the guide structure 4 includes a guide rod 41, which is connected to the actuator housing 1. The lead screw 2 has a guide groove 21. When the lead screw 2 moves linearly, the guide rod 41 at least partially extends into the guide groove 21. By setting the guide rod 41 to cooperate with the guide groove 21, the guide rod 41 can guide the linear movement of the lead screw 2, and the working principle is simple and reliable.

[0053] Specifically, the length direction of the guide groove 21 is the same as the length direction of the screw 2, and the guide rod 41 is guided and matched with the guide groove 21. Specifically, when the screw 2 is along its own length direction (i.e. Figure 2 When the guide rod 41 moves in the guide groove 21 of the lead screw 2 (in the up and down directions shown), the guide rod 41 always cooperates well with the guide groove 21 of the lead screw 2, thereby guiding the linear movement of the lead screw 2. Under the guiding action of the guide rod 41, the lead screw 2 can be effectively prevented from being off-axis during movement, thereby reducing the risks of eccentric wear of the lead screw 2, abnormal noise of the mechanism, and failure. The working principle of the guide rod 41 guiding the lead screw 2 is simple and reliable. In addition, the guide rod 41 at least partially extends into the guide groove 21 of the lead screw 2, and the guide rod 41 does not occupy too much internal space of the actuator housing 1. The guide rod 41 is highly integrated with the lead screw 2, and the space occupied by the guide rod 41 is small, so that the structure of the actuator 10 is compact.

[0054] The actuator housing 1 has an installation space inside, and the guide rod 41 extends from the actuator housing 1 to the inside of the installation space. The specific connection form of the guide rod 41 and the actuator housing 1 depends on the processing technology. For example, the guide rod 41 and the actuator housing 1 can be an integral molded part, or they can be split parts connected by welding, bonding, bolting or other forms of fastening.

[0055] The guide groove 21 is relatively long, which can provide a movement space for the relative movement of the guide rod 41 and the lead screw 2, and the guide rod 41 cooperates well with the guide groove 21 to realize the vertical guidance of the lead screw 2. The guide rod 41 cooperates with the guide groove 21 inside the lead screw 2 to avoid long-term wear of the outer peripheral surface of the lead screw 2, and reduce the risk of poor threaded connection between the nut 3 and the lead screw 2 due to wear of the outer peripheral surface of the lead screw 2.

[0056] In some embodiments of the present invention, the projection of the guide rod 41 in a plane perpendicular to the axis of the guide rod 41 is circular, and the projection of the guide groove 21 in a plane perpendicular to the axis of the guide rod 41 is adapted to the guide rod 41. Therefore, while the guide rod 41 guides the lead screw 2 in the up and down directions, the circumferential rotation of the lead screw 2 is not affected, so that the lead screw 2 and the nut 3 are well threaded, and the operation stability of the entire actuator 10 mechanism is increased.

[0057] In some embodiments of the present invention, in the linear movement direction of the lead screw 2, the depth of the guide groove 21 is greater than the movement stroke of the lead screw 2. This ensures that the lead screw 2 will not interfere with the guide rod 41 within its movement stroke range.

[0058] In some embodiments of the present invention, the length of the guide rod 41 is less than or equal to the travel of the lead screw 2. Since the depth of the guide groove 21 is greater than the travel of the lead screw 2, the length of the guide rod 41 is less than the depth of the guide groove 21, so that the guide rod 41 will not collide with the bottom of the guide groove 21, that is, the guide rod 41 and the lead screw 2 will not interfere with each other in motion.

[0059] In some embodiments of the present invention, referring to Figure 2 As shown, the actuator housing 1 has a mounting cavity 14 inside, the nut 3 is located in the mounting cavity 14, a matching cavity 5 is formed between the end of the guide rod 41 extending into the guide groove 21 and the groove bottom of the guide groove 21, and a ventilation channel 411 is provided on the guide rod 41, and the ventilation channel 411 connects the matching cavity 5 and the mounting cavity 14. When the matching cavity 5 is a closed cavity (that is, the guide rod 41 is not provided with a ventilation channel 411), the gas in the matching cavity 5 is frequently compressed by the guide rod 41 to generate a large damping force, so that the movement of the guide rod 41 in the guide groove 21 is hindered. The ventilation channel 411 provided on the guide rod 41 can be used to reduce the damping force generated by the frequent compression of the gas in the matching cavity 5, so that the resistance of the guide rod 41 when moving in the guide groove 21 is small.

[0060] In some embodiments of the present invention, referring to Figure 2 , Figure 7 As shown, the guide structure 4 also includes a sliding bearing 42, which is arranged at the guide matching position between the guide rod 41 and the guide groove 21. Specifically, the sliding bearing 42 is installed on the inner peripheral wall of the guide groove 21, and the inner peripheral surface of the sliding bearing 42 is guided and matched with the outer peripheral wall of the guide rod 41. The sliding bearing 42 can at least partially separate the guide rod 41 from the guide groove 21, thereby preventing the guide rod 41 from directly contacting the guide groove 21 and causing wear. The sliding bearing 42 plays the role of sliding guide and reducing sliding friction resistance, which is conducive to improving the running stability of the screw 2.

[0061] In some embodiments of the utility model, there is an interference fit between the outer circumferential surface of the sliding bearing 42 and the inner circumferential wall of the guide groove 21, thereby ensuring that the sliding bearing 42 can be firmly installed in the guide groove 21; and / or, there is a clearance fit between the inner circumferential surface of the sliding bearing 42 and the outer circumferential wall of the guide rod 41, thereby ensuring that the screw 2 can move smoothly.

[0062] In some embodiments of the present invention, referring to Figure 2As shown, the outer diameter of the guide rod 41 is smaller than the inner diameter of the guide groove 21, the outer peripheral wall of the guide rod 41 and the inner peripheral wall of the guide groove 21 are separated by the sliding bearing 42, one end of the ventilation channel 411 is connected to the outer peripheral wall of the guide rod 41, thereby, the one end of the ventilation channel 411 is connected to the installation cavity 14, and the other end of the ventilation channel 411 is connected to the end face of the guide rod 41 extending into the guide groove 21, thereby, the other end of the ventilation channel 411 is connected to the mating cavity 5.

[0063] exist Figure 2 In the example, the ventilation channel 411 is in a two-section shape, and the ventilation channel 411 includes a first channel section 4111 and a second channel section 4112, the lower end of the guide rod 41 extends into the guide groove 21, one end of the first channel section 4111 is connected to the lower end surface of the guide rod 41 and is connected to the mating cavity 5, the other end of the first channel section 4111 is connected to the second channel section 4112, and the other end of the second channel section 4112 is connected to the outer peripheral wall of the guide rod 41 and is connected to the mounting cavity 14.

[0064] In some embodiments not shown in the figures, the shape of the ventilation channel 411 can also be arc-shaped, three-section-shaped, corrugated, etc.

[0065] In some embodiments of the present invention, referring to Figure 2-Figure 4 As shown, the actuator housing 1 has an installation cavity 14 inside, and the nut 3 is located in the installation cavity 14. One end of the nut 3 is rotatably supported at a first position of the actuator housing 1 through a first bearing 91, and the other end of the nut 3 is rotatably supported at a second position of the actuator housing 1 through a second bearing 92. The first bearing 91 and the second bearing 92 are spaced apart along the axial direction of the nut 3. The first bearing 91 and the second bearing 92 are used to support the rotating nut 3, which can reduce the friction loss between the nut 3 and the actuator housing 1. The first bearing 91 and the second bearing 92 are spaced apart along the axial direction of the nut 3 to form a two-point support, thereby allowing the nut 3 to rotate more smoothly.

[0066] In some embodiments of the present invention, referring to Figure 2-Figure 4 , Figure 7-Figure 9 As shown, the actuator housing 1 has a first axial limiting surface 1231 and a second axial limiting surface 1331 inside, the nut 3 has a first limiting shoulder 31 and a second limiting shoulder 32, one axial end of the first bearing 91 abuts against the first limiting shoulder 31, and the other axial end of the first bearing 91 abuts against the first axial limiting surface 1231, thereby achieving axial limiting of the first bearing 91. One axial end of the second bearing 92 abuts against the second limiting shoulder 32, and the other axial end of the second bearing 92 abuts against the second axial limiting surface 1331, thereby achieving axial limiting of the second bearing 92.

[0067] Specifically, the first axial limiting surface 1231 and the first limiting shoulder 31 are arranged opposite to each other. Optionally, the limiting surfaces of the first axial limiting surface 1231 and the first limiting shoulder 31 are parallel to each other.

[0068] Similarly, the second axial limiting surface 1331 and the second limiting shoulder 32 are arranged opposite to each other. Optionally, the limiting surfaces of the second axial limiting surface 1331 and the second limiting shoulder 32 are parallel to each other.

[0069] Optionally, in some embodiments, Figure 2-Figure 4 As shown, the first bearing 91 and the second bearing 92 can both be angular contact ball bearings, and the first bearing 91 and the second bearing 92 are disposed opposite to each other in the upper and lower directions. The first bearing 91 and the second bearing 92 are used to support the axial and radial loads of the nut 3 and provide support for the rotational movement of the nut 3.

[0070] Optionally, in other embodiments, the first bearing 91 and the second bearing 92 may both be deep groove ball bearings.

[0071] In some embodiments of the present invention, referring to Figure 2 As shown, the actuator housing 1 has an inner circumferential surface 115 of the housing, and the inner circumferential surface 115 of the housing is opposite to the outer circumferential surface of the lead screw 2. The guide structure 4 includes a guide ring 43, and the inner circumferential surface of the guide ring 43 is mounted on the outer circumferential surface of the lead screw 2, and the outer circumferential surface of the guide ring 43 is slidably matched with the inner circumferential surface 115 of the housing. When the lead screw 2 moves linearly, the guide ring 43 slides along the inner circumferential surface 115 of the housing, playing a sliding guide role. The guide ring 43 can guide the linear movement of the lead screw 2, effectively preventing the lead screw 2 from deviating from the axis during the movement, thereby reducing the risks of eccentric wear of the lead screw 2, abnormal noise of the mechanism, failure, etc., and further enhancing the operating stability of the lead screw 2 during the axial reciprocating motion.

[0072] Optionally, the guide structure 4 of the actuator 10 may be one of the guide rod 41 and the guide ring 43, or both the guide rod 41 and the guide ring 43 may be provided at the same time to achieve dual guidance.

[0073] In some embodiments of the present invention, referring to Figure 2 As shown, the actuator 10 further includes a driving component 6, and the driving component 6 is used to drive the nut 3 to rotate. By providing the driving component 6, full active control of the linear movement of the lead screw 2 can be achieved.

[0074] In some embodiments of the present invention, referring to Figure 2As shown, the driving component 6 is a motor, and the driving component 6 includes a stator assembly 61 and a mover assembly 62. The stator assembly 61 is installed on the actuator housing 1, and the stator assembly 61 includes a stator core and a stator winding. The stator winding is wound on the stator core. The mover assembly 62 is installed on the nut 3, and the mover assembly 62 includes at least a magnetic part. The stator assembly 61 is used to excite the mover assembly 62 to rotate, so as to drive the nut 3 to rotate.

[0075] Specifically, the stator assembly 61 is used to provide the required excitation magnetic field, the magnetic element may be a permanent magnet, and the mover assembly 62 is used to provide a permanent stable magnetic field. The mover assembly 62 may also include a retaining frame, and the magnetic element is mounted on the retaining frame.

[0076] In some embodiments of the present invention, referring to Figure 2-Figure 4 As shown, the nut 3 is provided with a first circumferential protrusion 33 and a second circumferential protrusion 34, both of which protrude radially outward from the nut 3, and one axial end of the movable subassembly 62 abuts against the first circumferential protrusion 33, and the other axial end of the movable subassembly 62 abuts against the second circumferential protrusion 34. The first circumferential protrusion 33 and the second circumferential protrusion 34 can limit the axial position of the movable subassembly 62 to ensure that the relative axial position of the movable subassembly 62 and the nut 3 is accurate, and the movable subassembly 62 is not easy to fall off from the nut 3, thereby ensuring that the rotation of the movable subassembly 62 can be better transmitted to the nut 3, and the structure of the actuator 10 is more stable and safer to use. The movable subassembly 62 can be fixed to the nut 3, so that the movable subassembly 62 and the nut 3 can rotate synchronously to drive the lead screw 2 to perform reciprocating linear motion.

[0077] In addition, the mover assembly 62 and the nut 3 are directly coaxially nested and connected together, which completely couples the axial lengths of the nut 3 and the mover assembly 62, reduces the intermediate adapter, and reduces the total axial length of the nut 3 and the mover assembly 62. The vertical (i.e., axial) dimension space of the actuator 10 is further compressed, which is more conducive to improving the deployability of the actuator 10 of the utility model on the entire vehicle.

[0078] Optionally, the first circumferential protrusion 33 and the nut 3 can be an integrated structure, and the first circumferential protrusion 33 and the nut 3 are integrally formed; or optionally, the first circumferential protrusion 33 and the nut 3 can also be a split structure, for example, the first circumferential protrusion 33 is a first retaining ring, and the nut 3 is provided with a first annular groove, the first retaining ring is installed in the first annular groove, and the first retaining ring protrudes outward from the outer circumferential surface of the nut 3 along the radial direction of the nut 3.

[0079] Optionally, the second circumferential protrusion 34 and the nut 3 can be an integrated structure, and the second circumferential protrusion 34 and the nut 3 are integrally formed; or optionally, the second circumferential protrusion 34 and the nut 3 can also be a split structure, for example, the second circumferential protrusion 34 is a second retaining ring, and the nut 3 is provided with a second annular groove, the second retaining ring is installed in the second annular groove, and the second retaining ring protrudes outward from the outer circumferential surface of the nut 3 along the radial direction of the nut 3.

[0080] In some embodiments of the present invention, referring to Figure 2 , Figure 7-Figure 9 As shown, the actuator 10 further includes a stator positioning ring 7, the interior of the actuator housing 1 has a first positioning surface 81 and a second positioning surface 82, the stator assembly 61 and the stator positioning ring 7 are located between the first positioning surface 81 and the second positioning surface 82, one axial end of the stator positioning ring 7 abuts against the first positioning surface 81, the other axial end of the stator positioning ring 7 abuts against the stator assembly 61, and one axial end of the stator assembly 61 away from the stator positioning ring 7 abuts against the second positioning surface 82. By providing the stator positioning ring 7, the axial position of the stator assembly 61 can be fixed and accurate.

[0081] Reference Figure 2 , Figure 7 As shown, the actuator housing 1 has a stator mating surface 83, and the stator assembly 61 and the stator positioning ring 7 are both sleeved on the stator mating surface 83 inside the actuator housing 1. The sum of the axial length of the stator assembly 61 and the axial length of the stator positioning ring 7 is equal to the distance between the first positioning surface 81 and the second positioning surface 82, that is, the sum of the axial length of the stator assembly 61 and the axial length of the stator positioning ring 7 is equal to the axial length of the stator mating surface 83.

[0082] Optionally, the stator assembly 61 is press-fitted onto the stator mating surface 83 inside the actuator housing 1 in an interference fit manner.

[0083] exist Figure 2 , Figure 7 In the example of the embodiment, the first positioning surface 81 is located above the second positioning surface 82, so that the stator positioning ring 7 is located above the stator assembly 61. In some embodiments not shown in the figure, the first positioning surface 81 is located below the second positioning surface 82, so that the stator positioning ring 7 is located below the stator assembly 61.

[0084] The first positioning surface 81 and the second positioning surface 82 are arranged opposite to each other. Optionally, the first positioning surface 81 and the second positioning surface 82 are parallel to each other.

[0085] In some embodiments of the present invention, at least part of the structure of the actuator housing 1 is suitable for connecting to the vehicle body, one end of the lead screw 2 is suitable for connecting to the wheel, and the lead screw 2 is suitable for adjusting the distance between the vehicle body and the wheel when moving linearly. The actuator housing 1 is used to connect to the vehicle body, and the end of the lead screw 2 extending outside the actuator housing 1 is used to connect to the wheel.

[0086] Optionally, the driving component 6 is a motor. In this case, the actuator 10 is in active mode, and the driving component 6 is used to provide power. When the driving component 6 is working, it can drive the nut 3 to rotate. When the nut 3 rotates, it drives the lead screw 2 to move back and forth linearly, thereby realizing the conversion of rotational motion into linear motion to change the distance between the vehicle body and the wheel, thereby realizing full active control of the wheel. Therefore, according to different road conditions, the relative distance between the wheel and the vehicle body can be fully actively controlled in real time, thereby realizing dynamic adjustment of the vehicle body height to meet the personalized needs of the vehicle for different height states.

[0087] In some embodiments of the present invention, referring to Figure 2 As shown, the actuator 10 also includes: a vehicle body connection structure and a wheel connection structure 94, one end of the lead screw 2 is located in the actuator housing 1, and the other end of the lead screw 2 is suitable for extending out of the actuator housing 1 to be connected to the wheel through the wheel connection structure 94, and the actuator housing 1 is suitable for being connected to the vehicle body through the vehicle body connection structure.

[0088] Optionally, the vehicle body connection structure is a tower top, and the actuator housing 1 is connected to the vehicle body through the tower top.

[0089] Optionally, the vehicle body connection structure is a stud structure 93, and the stud structure 93 can be arranged on the actuator housing 1, for example, referring to Figure 1-Figure 2 , Figure 5-Figure 7 As shown, the stud structure 93 is arranged on the first housing 11 of the actuator housing 1, and the stud structure 93 is used to connect with the vehicle body. That is to say, when the actuator 10 is connected with the vehicle body, it can be realized by connecting the stud structure 93 on the actuator housing 1 with the vehicle body, thereby reducing the use of intermediate structures such as the tower top, thereby reducing the weight. Specifically, when the stud structure 93 is connected with the vehicle body, the fastening nut cooperates with the stud structure 93 to realize the fastening connection between the stud structure 93 and the vehicle body. Optionally, there can be one or more stud structures 93.

[0090] Reference Figure 1-Figure 2 , Figure 5-Figure 7 As shown, the first housing 11 is a cylindrical structure, and a closed end plate is provided on the side close to the vehicle body, and the stud structure 93 is provided on the outer end surface of the closed end plate.

[0091] Reference Figure 2As shown, the wheel connection structure 94 is a lower fork arm, and the lower fork arm and the lead screw 2 are connected and fixed by a fastener 97, and the lower fork arm is used to connect the lead screw 2 and the wheel end. The lead screw 2 drives the lower fork arm to make linear motion together, thereby realizing the control of the position of the wheel end. Optionally, the fastener 97 can be a screw, and the lower end of the lead screw 2 is provided with a threaded hole. The screw passes through the lower fork arm and is tightened in the threaded hole to achieve a tight connection between the lower fork arm and the lead screw 2. Or optionally, the fastener 97 is a bolt, and the lower end of the lead screw 2 is provided with a light hole. The screw passes through the light holes of the lower fork arm and the lead screw 2 and is tightened with the nut 3 to achieve a tight connection between the lower fork arm and the lead screw 2.

[0092] In some embodiments of the present invention, referring to Figure 1-Figure 2 As shown, the actuator 10 also includes an elastic support member 95, which is sleeved outside the lead screw 2 and is located between the wheel connection structure 94 and the actuator housing 1. One end of the elastic support member 95 is connected to the actuator housing 1, and the other end of the elastic support member 95 is connected to the wheel connection structure 94. The elastic support member 95 is used to bear part of the vehicle body weight and reduce the active thrust that the actuator 10 needs to provide. Figure 1-Figure 2 As shown, the elastic support member 95 can be a coil spring.

[0093] In some embodiments of the present invention, referring to Figure 1-Figure 2 As shown, the actuator 10 further includes a dust cover 96, which is sleeved on the outside of the lead screw 2 and is located between the wheel connection structure 94 and the actuator housing 1. The actuator housing 1 has a housing hole 131 for the lead screw 2 to extend out, and the dust cover 96 has a dustproof space, and the housing hole 131 is located in the dustproof space. The dust cover 96 is used to isolate the actuator 10 from impurities such as water and dust outside. For example, the dust cover 96 can prevent external water vapor, dust, and debris from entering the installation cavity 14 inside the actuator housing 1 through the housing hole 131.

[0094] In a specific embodiment, the active actuation principle of the entire actuator 10 is: the stator assembly 61 of the driving component 6 drives the movable assembly 62 to rotate, the movable assembly 62 drives the nut 3 to rotate, the nut 3 drives the screw 2 to rotate and the screw 2 moves linearly, thereby realizing the conversion of rotational motion and linear motion, wherein the guide structure 4 strictly limits the actuation of the screw 2 to the vertical direction, and through the control strategy, the relative distance between the wheel and the body is dynamically adjusted in real time to meet the driving comfort requirements of the vehicle 1000.

[0095] In some embodiments of the present invention, referring to Figure 1-Figure 2 , Figure 5-Figure 7As shown, the actuator housing 1 includes a first housing 11, a second housing 12 and a third housing 13. The first housing 11 is connected to one end of the second housing 12, and the third housing 13 is connected to the other end of the second housing 12. A connecting mounting cavity 14 is formed in the first housing 11, the second housing 12 and the third housing 13. Specifically, the first housing 11 has a stroke space 113 inside, and the stroke space 113 is used for linear movement of the lead screw 2. The second housing 12 has a motor mounting space 120 inside, and the motor mounting space 120 is connected to the stroke space 113. The motor mounting space 120 is used to install the driving component 6. The driving component 6 is arranged in the second housing 12. One end of the lead screw 2 is located in the mounting cavity 14 and can extend into the stroke space 113. The other end of the lead screw 2 passes through the third housing 13 and extends out of the actuator housing 1.

[0096] Reference Figure 7 As shown, the third housing 13 has an end cover space 132 inside, the end cover space 132 is connected to the motor installation space 120 , and the travel space 113 , the motor installation space 120 and the end cover space 132 together form a mounting cavity 14 .

[0097] The third housing 13 and the second housing 12 can be connected and fixed by connecting members such as bolts, rivets, etc.

[0098] In some embodiments of the present invention, the first housing 11 and the second housing 12 are an integrated structure.

[0099] Or in some other embodiments of the present invention, the first housing 11 and the second housing 12 are split structures. The first housing 11 and the second housing 12 can be connected and fixed by connecting members such as bolts, rivets, etc. Designing the first housing 11 and the second housing 12 as split structures is conducive to the assembly and disassembly of the components in the first housing 11 and the second housing 12.

[0100] Reference Figure 2-Figure 4 As shown, one end of the nut 3 is rotatably supported on the second housing 12 through the first bearing 91, and the other end of the nut 3 is rotatably supported on the third housing 13 through the second bearing 92. The first axial limit surface 1231 is located on the second housing 12, and the second axial limit surface 1331 is located on the third housing 13.

[0101] In some embodiments of the present invention, referring to Figure 7-Figure 8As shown, a second through hole 124 is provided at one end of the second housing 12 close to the first housing 11, and the second through hole 124 can be used for the screw 2 to pass through. The second housing 12 is a cylindrical structure, and a closed end face is provided on the side close to the vehicle body, and a second through hole 124 is provided at the center of the closed end face. The second through hole 124 cooperates with the opening structure at the bottom of the first housing 11, and can connect the motor installation space 120 with the stroke space 113, so that the screw 2 can pass smoothly.

[0102] In some embodiments of the present invention, referring to Figure 2 , Figure 7-Figure 9 As shown, the second shell 12 includes a second shell body 121 and a second shell end plate 122, the second shell body 121 and the second shell end plate 122 are connected, the third shell 13 is connected to the second shell body 121, the first shell 11 is connected to the second shell end plate 122, and the second through hole 124 is opened in the second shell end plate 122, the second through hole 124 is connected to the motor installation space 120, and the second through hole 124 is used for the screw 2 to pass through.

[0103] In some embodiments of the present invention, referring to Figure 2 , Figure 7 and Fig. 9 As shown, the first housing 11 includes a first housing body 111 and a first housing flange 112, the first housing body 111 and the first housing flange 112 are connected, a travel space 113 is formed in the first housing body 111, the first housing flange 112 protrudes outwardly along the radial direction of the first housing body 111, and the first housing flange 112 is connected to the second housing end plate 122. The upper end of the first housing body 111 is suitable for connection with the vehicle body, and the lower end of the first housing body 111 has an opening structure, which is used to connect the travel space 113 to the second housing 12, and can allow the lead screw 2 to pass through.

[0104] Reference Figure 7-Figure 8 As shown, a first mounting hole 1121 is provided on the first shell flange 112, and a second upper mounting hole 1221 is provided on the second shell end plate 122. The first mounting hole 1121 and the second upper mounting hole 1221 are at least partially connected, and a threaded fastener passes through the first mounting hole 1121 and the second upper mounting hole 1221 and is fastened to achieve the connection and fixation between the second shell 12 and the first shell 11.

[0105] Optionally, one of the first mounting hole 1121 and the second upper mounting hole 1221 is a smooth hole, and the other is a threaded hole, and a screw is passed through the smooth hole and fastened to the threaded hole.

[0106] Alternatively, the first mounting hole 1121 and the second upper mounting hole 1221 are both light holes, such as Figure 8As shown, use bolts to pass through the two holes and then tighten them with the fastening nuts.

[0107] Optionally, there are one or more first mounting holes 1121, and the number of the first mounting holes 1121 and the second upper mounting holes 1221 are the same and the positions correspond to each other. Figure 5 , Figure 7-Figure 8 As shown, the plurality of first mounting holes 1121 may be spaced apart and arranged on the same circle, thereby facilitating the processing and manufacturing of the first mounting holes 1121 and facilitating passing the threaded fasteners through the first mounting holes 1121 and the second upper mounting holes 1221 and fastening them.

[0108] In some embodiments of the present invention, referring to Figure 3 , Figure 7-Figure 8 As shown, a first bearing mounting seat 123 is provided on the second housing end plate 122. The first bearing mounting seat 123 is used to mount the first bearing 91. The first bearing mounting seat 123 includes a first axial limiting surface 1231 and a first circumferential mounting surface 1232. The first axial limiting surface 1231 is used to stop and limit the axial end surface of the first bearing 91. The first circumferential mounting surface 1232 is used to mount the outer circumferential surface of the first bearing 91. The second through hole 124 axially penetrates the annular space surrounded by the first circumferential mounting surface 1232.

[0109] In some embodiments of the utility model, a first stop structure 114 is provided at the periphery of one end of the first shell 11 close to the second shell 12, and the first stop structure 114 is used to ensure the assembly coaxiality of the first shell 11 and the second shell 12. Specifically, at least a portion of the first stop structure 114 extends into the second through hole 124, and the first stop structure 114 includes a first axial stop surface 1141 and a first circumferential stop surface 1142. The end surface of the second shell 12 close to the first shell 11 abuts against the first axial stop surface 1141, and the hole wall of the second through hole 124 abuts against the first circumferential stop surface 1142, thereby ensuring that the first shell 11 and the second shell 12 have a high coaxiality.

[0110] In some embodiments of the present invention, referring to Figure 2 , Figure 7 and Fig. 9 As shown, one end of the second housing 12 close to the third housing 13 is an open end, and the third housing 13 covers the open end. The third housing 13 is provided with a housing hole 131 for the screw 2 to pass through, and the housing hole 131 is connected to the motor installation space 120.

[0111] Reference Figure 2 , Figure 7 and Fig. 9As shown, a second lower mounting hole 1211 is provided at the lower end of the second shell body 121, and a third mounting hole 135 is provided on the third shell 13. The second lower mounting hole 1211 is at least partially connected to the third mounting hole 135, and a threaded fastener passes through the third mounting hole 135 and the second lower mounting hole 1211 and is fastened to achieve the connection and fixation between the second shell 12 and the third shell 13.

[0112] Optionally, one of the third mounting hole 135 and the second lower mounting hole 1211 is a smooth hole, and the other is a threaded hole, and a screw is passed through the smooth hole and fastened to the threaded hole.

[0113] Or optionally, the third mounting hole 135 and the second lower mounting hole 1211 are both light holes, and bolts are passed through the two light holes and then tightened with fastening nuts.

[0114] Optionally, there are one or more third mounting holes 135, and the number of the third mounting holes 135 is the same as that of the second lower mounting holes 1211, and the positions correspond one to one. When there are multiple third mounting holes 135, the multiple third mounting holes 135 can be spaced apart and arranged on the same circle, thereby facilitating the processing and manufacturing of the third mounting holes 135, and facilitating the threaded fasteners to pass through the third mounting holes 135 and the second lower mounting holes 1211 and fasten them.

[0115] In some embodiments of the present invention, referring to Figure 4 , Figure 7 and Fig. 9 As shown, the third shell 13 is provided with a second bearing mounting seat 133, and the second bearing mounting seat 133 is used to install the second bearing 92. The second bearing mounting seat 133 includes a second axial limiting surface 1331 and a second circumferential mounting surface 1332. The second axial limiting surface 1331 is used to stop and limit the axial end surface of the second bearing 92, and the second circumferential mounting surface 1332 is used to install the outer circumferential surface of the second bearing 92. The shell hole 131 axially penetrates the annular space surrounded by the second circumferential mounting surface 1332.

[0116] In some embodiments of the present utility model, a second stop structure 134 is provided at one end of the third housing 13 close to the second housing 12, and the second stop structure 134 is used to ensure the assembly coaxiality of the second housing 12 and the second housing 12. Specifically, the second stop structure 134 includes a second axial stop surface 1341 and a second circumferential stop surface 1342, the end surface of the second housing 12 abuts against the second axial stop surface 1341, and the outer circumferential surface of the second housing 12 abuts against the second circumferential stop surface 1342, thereby ensuring that the second housing 12 and the third housing 13 have a high coaxiality.

[0117] In some embodiments of the present invention, referring to Figure 2 , Figure 7As shown, the first positioning surface 81 and the stator matching surface 83 are both formed on the second housing 12 , and the second positioning surface 82 is formed on the third housing 13 .

[0118] Optionally, the second positioning surface 82 and the second axial stop surface 1341 may be as follows: Fig. 9 The same plane shown may also be different planes.

[0119] Reference Fig.10 As shown, the suspension assembly 100 according to the second embodiment of the utility model includes the actuator 10 of the above embodiment.

[0120] According to the suspension assembly 100 of the embodiment of the utility model, the guide structure 4 arranged between the screw 2 of the actuator 10 and the actuator housing 1 can guide the linear movement of the screw 2, which is beneficial to enhance the stability of the screw 2 during the axial reciprocating motion, and the working principle is simple and reliable.

[0121] Reference Fig.11 As shown, a vehicle 1000 according to an embodiment of the third aspect of the utility model comprises the suspension assembly 100 of the above embodiment.

[0122] According to the vehicle 1000 of the embodiment of the utility model, its suspension assembly 100 includes an actuator 10. The guide structure 4 arranged between the screw 2 of the actuator 10 and the actuator housing 1 can guide the linear movement of the screw 2, which is beneficial to enhance the stability of the screw 2 during the axial reciprocating motion. The working principle is simple and reliable.

[0123] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0124] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0125] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0126] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An actuator (10), characterized in that: include: Actuator housing (1); Lead screw (2); and A nut (3), the nut (3) being rotatably mounted on the actuator housing (1), the nut (3) being threadedly engaged with the lead screw (2), and the lead screw (2) being able to move linearly when the nut (3) rotates; Wherein, a guide structure (4) is provided between the lead screw (2) and the actuator housing (1), and the guide structure (4) is used to guide the lead screw (2) so as to enable the lead screw (2) to move linearly.

2. The actuator (10) according to claim 1, characterized in that: The guide structure (4) comprises a guide rod (41), wherein the guide rod (41) is connected to the actuator housing (1), and the lead screw (2) has a guide groove (21). When the lead screw (2) moves linearly, the guide rod (41) at least partially extends into the guide groove (21).

3. The actuator (10) according to claim 2, characterized in that: In the linear moving direction of the lead screw (2), the depth of the guide groove (21) is greater than the moving stroke of the lead screw (2).

4. The actuator (10) according to claim 3, characterized in that: The length of the guide rod (41) is less than or equal to the moving stroke of the lead screw (2).

5. The actuator (10) according to claim 2, characterized in that: The actuator housing (1) has an installation cavity (14) inside, the nut (3) is located in the installation cavity (14), a matching cavity (5) is formed between one end of the guide rod (41) extending into the guide groove (21) and the bottom of the guide groove (21), and a ventilation channel (411) is provided on the guide rod (41), and the ventilation channel (411) connects the matching cavity (5) and the installation cavity (14).

6. The actuator (10) according to claim 5, characterized in that: The guide structure (4) further comprises a sliding bearing (42), and the sliding bearing (42) is arranged at the guiding matching position between the guide rod (41) and the guide groove (21).

7. The actuator (10) according to claim 6, characterized in that: The outer peripheral wall of the guide rod (41) and the inner peripheral wall of the guide groove (21) are separated by the sliding bearing (42); one end of the ventilation channel (411) is connected to the outer peripheral wall of the guide rod (41); and the other end of the ventilation channel (411) is connected to an end surface of the guide rod (41) extending into the guide groove (21).

8. The actuator (10) according to claim 1, characterized in that: The actuator housing (1) has an installation cavity (14) inside, and the nut (3) is located in the installation cavity (14). One end of the nut (3) is rotatably supported at a first position of the actuator housing (1) via a first bearing (91), and the other end of the nut (3) is rotatably supported at a second position of the actuator housing (1) via a second bearing (92). The first bearing (91) and the second bearing (92) are spaced apart along the axial direction of the nut (3).

9. The actuator (10) according to claim 8, characterized in that: The actuator housing (1) has a first axial limit surface (1231) and a second axial limit surface (1331) inside, the nut (3) has a first limit shoulder (31) and a second limit shoulder (32), one axial end of the first bearing (91) abuts against the first limit shoulder (31), the other axial end of the first bearing (91) abuts against the first axial limit surface (1231), one axial end of the second bearing (92) abuts against the second limit shoulder (32), and the other axial end of the second bearing (92) abuts against the second axial limit surface (1331).

10. The actuator (10) according to any one of claims 1 to 9, characterized in that: The actuator housing (1) has an inner circumferential surface (115) of the housing opposite to the outer circumferential surface of the lead screw (2); the guide structure (4) includes a guide ring (43); the inner circumferential surface of the guide ring (43) is mounted on the outer circumferential surface of the lead screw (2); the outer circumferential surface of the guide ring (43) is slidably matched with the inner circumferential surface (115) of the housing.

11. The actuator (10) according to any one of claims 1 to 9, characterized in that: The actuator (10) further comprises a driving component (6), wherein the driving component (6) is used for driving the nut (3) to rotate.

12. The actuator (10) according to claim 11, characterized in that The driving component (6) comprises a stator assembly (61) and a mover assembly (62); the stator assembly (61) is mounted on the actuator housing (1) and comprises a stator core and a stator winding; the stator winding is wound around the stator core; the mover assembly (62) is mounted on the nut (3) and comprises at least a magnetic component; the stator assembly (61) is used to excite the mover assembly (62) to rotate, thereby driving the nut (3) to rotate.

13. The actuator (10) according to claim 12, characterized in that The nut (3) is provided with a first circumferential protrusion (33) and a second circumferential protrusion (34), and the first circumferential protrusion (33) and the second circumferential protrusion (34) both protrude radially outward of the nut (3), and one axial end of the movable subassembly (62) abuts against the first circumferential protrusion (33), and the other axial end of the movable subassembly (62) abuts against the second circumferential protrusion (34).

14. The actuator (10) according to claim 12, characterized in that The actuator (10) further comprises a stator positioning ring (7); the actuator housing (1) has a first positioning surface (81) and a second positioning surface (82) inside; the stator assembly (61) and the stator positioning ring (7) are located between the first positioning surface (81) and the second positioning surface (82); one axial end of the stator positioning ring (7) abuts against the first positioning surface (81); the other axial end of the stator positioning ring (7) abuts against the stator assembly (61); and one axial end of the stator assembly (61) away from the stator positioning ring (7) abuts against the second positioning surface (82).

15. The actuator (10) according to claim 1, characterized in that At least part of the structure of the actuator housing (1) is suitable for connection with the vehicle body, one end of the lead screw (2) is suitable for connection with the wheel, and the lead screw (2) is suitable for adjusting the distance between the vehicle body and the wheel when moving linearly.

16. The actuator (10) according to claim 15, characterized in that The actuator (10) further comprises: a vehicle body connection structure and a wheel connection structure (94); one end of the lead screw (2) is located in the actuator housing (1); the other end of the lead screw (2) is adapted to extend out of the actuator housing (1) to be connected to the wheel via the wheel connection structure (94); and the actuator housing (1) is adapted to be connected to the vehicle body via the vehicle body connection structure.

17. The actuator (10) according to claim 16, characterized in that The actuator (10) further comprises an elastic support member (95), wherein the elastic support member (95) is sleeved outside the lead screw (2) and is located between the wheel connection structure (94) and the actuator housing (1).

18. The actuator (10) according to claim 16 or 17, characterized in that The actuator (10) further comprises a dust cover (96), wherein the dust cover (96) is sleeved outside the lead screw (2) and is located between the wheel connection structure (94) and the actuator housing (1), wherein the actuator housing (1) has a housing hole (131) through which the lead screw (2) extends, and the dust cover (96) has a dustproof space, wherein the housing hole (131) is located within the dustproof space.

19. A suspension assembly (100), characterized in that: The invention comprises an actuator (10) according to any one of claims 1 to 18.

20. A vehicle (1000), characterized in that: Comprising the suspension assembly (100) as claimed in claim 19.

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