Actuator, suspension assembly, and vehicle

Abstract

A vehicle, the vehicle comprising a suspension assembly, and the suspension assembly comprising an actuator. The actuator comprises: an actuator housing, a lead screw, and a nut. The nut is rotatably mounted on the actuator housing, the nut has a threaded fit with the lead screw, and the lead screw can be driven to move linearly when the nut rotates. A guide structure is disposed between the lead screw and the actuator housing, and the guide structure is used for guiding the lead screw to enable the lead screw to move linearly.

Description

Actuator, suspension assembly and vehicle

[0001] Cross-reference to related applications

[0002] The present application claims priority to the Chinese patent application with the application date of May 28, 2024, the application number of 2024212003921, and the patent application name of "Actuator, suspension assembly and vehicle", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of vehicles, in particular to an actuator, a suspension assembly having the actuator, and a vehicle having the suspension assembly. BACKGROUND

[0004] In the related art, the actuator includes a driving component, a nut and a lead screw. The driving component drives the nut to rotate. The nut drives the lead screw to linearly reciprocate when rotating. However, the lead screw is unstable when linearly moving, and is prone to axial deviation, which leads to lead screw eccentric wear, mechanism abnormal noise, failure and the like. Therefore, there is room for improvement. SUMMARY

[0005] The present application aims to at least partially solve one of the above technical problems in the prior art. To this end, the present application proposes an actuator capable of enhancing the stability of the lead screw during linear reciprocating movement.

[0006] The present application also proposes a suspension assembly having the above-mentioned actuator.

[0007] The present application also proposes a vehicle having the above-mentioned suspension assembly.

[0008] The actuator according to an embodiment of the present application comprises an actuator housing, a lead screw and a nut. The nut is rotatably mounted to the actuator housing. The nut is in threaded engagement with the lead screw. The nut can drive the lead screw to linearly move when rotating. A guide structure is provided between the lead screw and the actuator housing. The guide structure is configured to guide the lead screw to linearly move.

[0009] The actuator according to an embodiment of the present application has a guide structure provided between the lead screw and the actuator housing. The guide structure can guide the linear movement of the lead screw, which is beneficial to enhance the stability of the lead screw during axial reciprocating movement. The working principle is simple and reliable.

[0010] According to some embodiments of the present application, the guide structure comprises a guide rod connected to the actuator housing. The lead screw has a guide groove. When the lead screw linearly moves, the guide rod at least partially extends into the guide groove.

[0011] According to some embodiments of the present application, the depth of the guide groove is greater than the moving stroke of the lead screw in the linear moving direction of the lead screw.

[0012] According to some embodiments of the present application, the length of the guide rod is less than or equal to the moving stroke of the lead screw.

[0013] According to some embodiments of the present application, the actuator housing has an installation cavity inside, the nut is located in the installation cavity, one end of the guide rod extending into the guide groove forms a fitting cavity between the guide groove and the groove bottom, and the guide rod is provided with an air exchange passage which communicates the fitting cavity and the installation cavity.

[0014] According to some embodiments of the present application, the guide structure further comprises a sliding bearing which is arranged at the guide fitting position of the guide rod and the guide groove.

[0015] According to some embodiments of the present application, the outer peripheral wall of the guide rod and the inner peripheral wall of the guide groove are spaced apart by the sliding bearing, one end of the air exchange passage communicates to the outer peripheral wall of the guide rod, and the other end of the air exchange passage communicates to the end face of the one end of the guide rod extending into the guide groove.

[0016] According to some embodiments of the present application, 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 by a first bearing, the other end of the nut is rotatably supported at a second position of the actuator housing by a second bearing, and the first bearing and the second bearing are spaced apart along the axial direction of the nut.

[0017] According to some embodiments of the present application, the actuator housing has a first axial limiting surface and a second axial limiting surface inside, the nut has a first limiting shoulder and a second limiting shoulder, the axial one end of the first bearing abuts against the first limiting shoulder, the axial other end of the first bearing abuts against the first axial limiting surface, the axial one end of the second bearing abuts against the second limiting shoulder, and the axial other end of the second bearing abuts against the second axial limiting surface.

[0018] According to some embodiments of the present application, the actuator housing has a housing inner peripheral surface opposite to the outer peripheral surface of the lead screw, and the guide structure comprises a guide ring, the inner peripheral surface of the guide ring is mounted to the outer peripheral surface of the lead screw, and the outer peripheral surface of the guide ring is in sliding fitting with the housing inner peripheral surface.

[0019] According to some embodiments of the present application, the actuator further comprises a driving component for driving the nut to rotate.

[0020] According to some embodiments of the present application, the driving component comprises a stator assembly and a rotor assembly, the stator assembly is mounted on the actuator housing and comprises a stator core and a stator winding, the stator winding is wound around the stator core, the rotor assembly is mounted on the nut and comprises at least a magnetic member, the stator assembly is used to excite the rotor assembly to rotate so as to drive the nut to rotate.

[0021] According to some embodiments of the present application, the nut is provided with a first circumferential protrusion and a second circumferential protrusion, the first circumferential protrusion and the second circumferential protrusion both protrude outward along the radial direction of the nut, one axial end of the rotor assembly abuts against the first circumferential protrusion, and the other axial end of the rotor assembly abuts against the second circumferential protrusion.

[0022] According to some embodiments of the present application, the actuator further comprises a stator positioning ring, the interior of the actuator housing is provided with 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 the axial end of the stator assembly away from the stator positioning ring abuts against the second positioning surface.

[0023] According to some embodiments of the present application, at least part of the structure of the actuator housing is adapted to be connected with a vehicle body, one end of the lead screw is adapted to be connected with a vehicle wheel, and the linear movement of the lead screw is adapted to adjust the distance between the vehicle body and the vehicle wheel.

[0024] According to some embodiments of the present application, the actuator further comprises a vehicle body connecting structure and a vehicle wheel connecting structure, one end of the lead screw is located inside the actuator housing, the other end of the lead screw is adapted to extend out of the actuator housing to be connected with a vehicle wheel through the vehicle wheel connecting structure, and the actuator housing is adapted to be connected with a vehicle body through the vehicle body connecting structure.

[0025] According to some embodiments of the present application, the actuator further comprises an elastic support, the elastic support is sleeved outside the lead screw and located between the vehicle wheel connecting structure and the actuator housing.

[0026] According to some embodiments of the present application, the actuator further comprises a dust cover, the dust cover is sleeved outside the lead screw and located between the vehicle wheel connecting structure and the actuator housing, the actuator housing is provided with a housing hole for the lead screw to extend out, and the dust cover is provided with a dust space, the housing hole is located in the dust space.

[0027] The suspension assembly according to the second aspect of the present application comprises the actuator described above.

[0028] According to the suspension assembly provided by the embodiment of the present application, the guide structure arranged between the screw rod of the actuator and the actuator housing can guide the linear motion of the screw rod, which is beneficial to the stability of the screw rod during the axial reciprocating motion, and the working principle is simple and reliable.

[0029] According to the vehicle provided by the third aspect of the present application, the suspension assembly is as described above.

[0030] According to the vehicle provided by the embodiment of the present application, the suspension assembly comprises an actuator, and the guide structure arranged between the screw rod of the actuator and the actuator housing can guide the linear motion of the screw rod, which is beneficial to the stability of the screw rod during the axial reciprocating motion, and the working principle is simple and reliable.

[0031] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0032] Fig. 1 is a front view of an actuator according to an embodiment of the present application;

[0033] Fig. 2 is a sectional view along line A-A in Fig. 1;

[0034] Fig. 3 is a partially enlarged schematic view of B in Fig. 2;

[0035] Fig. 4 is a partially enlarged schematic view of C in Fig. 2;

[0036] Fig. 5 is a perspective schematic view of the actuator housing, the guide structure and the stud structure;

[0037] Fig. 6 is a front view of the actuator housing and the stud structure;

[0038] Fig. 7 is a sectional view along line D-D in Fig. 6;

[0039] Fig. 8 is a partially enlarged schematic view of E in Fig. 7;

[0040] Fig. 9 is a partially enlarged schematic view of F in Fig. 7;

[0041] Fig. 10 is a block diagram of a suspension assembly according to an embodiment of the present application;

[0042] Fig. 11 is a block diagram of a vehicle according to an embodiment of the present application.

[0043] Reference signs: 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, stroke 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 cap space 132, second bearing mounting seat 133, second axial limiting surface 1331, second circumferential mounting surface 1332, second stop structure 134, second axial stop surface 1341, second circumferential stop surface 1342, third mounting hole 135, mounting cavity 14, lead screw 2, guide groove 21, nut 3, first limiting shoulder 31, second limiting shoulder 32, first circumferential protrusion 33, second circumferential protrusion 34, guide structure 4, guide rod 41, air exchange channel 411, first channel segment 4111, second channel segment 4112, sliding bearing 42, guide ring 43, mating cavity 5, drive component 6, stator assembly 61, rotor assembly 62, stator positioning ring 7, first positioning surface 81, second positioning surface 82, stator mating surface 83, first bearing 91, second bearing 92, stud structure 93, wheel connection structure 94, elastic support 95, dust cover 96, fastener 97. DETAILED DESCRIPTION

[0044] Embodiments of the present application are described below in detail with reference to examples illustrated in the accompanying drawings, in which like or similar elements or components throughout the drawings are denoted by like reference numerals, and therefore the description is only given one time. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application.

[0045] In the description of the present application, the terms "first", "second" are only for descriptive purposes, 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 of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0046] The actuator 10, the suspension assembly 100 having the actuator 10, and the vehicle 1000 having the suspension assembly 100 according to the embodiments of the present application are described in detail below with reference to the drawings.

[0047] Referring to FIGS. 1-2, the actuator 10 according to the embodiments of the present application can include an actuator housing 1, a lead screw 2, and a nut 3.

[0048] The nut 3 is rotatably mounted to the actuator housing 1, and the nut 3 is screw-coupled with the lead screw 2, so that the nut 3 can drive the lead screw 2 to move linearly when the nut 3 rotates. The nut 3 is coaxially coupled with the lead screw 2, and a spiral raceway can be provided on the nut 3, and a rolling body is arranged in the spiral raceway, and the rolling body is in rolling contact with the lead screw 2, so that the rolling body can transmit power.

[0049] The guide structure 4 is arranged between the lead screw 2 and the actuator housing 1, and is used to guide the lead screw 2 to move linearly.

[0050] For example, when the nut 3 rotates, the lead screw 2 can be driven to rotate, and since the nut 3 is mounted to the actuator housing 1, the lead screw 2 will move linearly while rotating, that is, the lead screw 2 will reciprocate along the axial direction of the lead screw 2, such as moving along the up-down direction in FIG. 2. The guide structure 4 is used to limit and guide the lead screw 2, and 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 risk of lead screw 2 eccentric wear, abnormal noise of the mechanism, failure, and further enhancing the stability of the lead screw 2 during reciprocating movement along the axial direction.

[0051] Referring to FIGS. 1-2, the actuator housing 1 can be used to provide a containing space for the guide structure 4, the lead screw 2, and the nut 3, so that the actuator housing 1 can provide protection for the guide structure 4, the lead screw 2, and the nut 3, thereby reducing the damage probability of the guide structure 4, the lead screw 2, and the nut 3.

[0052] According to the actuator 10 of the embodiments of the present application, the guide structure 4 arranged between the lead screw 2 and the actuator housing 1 can guide the linear movement of the lead screw 2, which is conducive to enhancing the stability of the lead screw 2 during reciprocating movement along the axial direction, and the working principle is reliable, the structure is simple, the processability is high, and the disassembly and assembly are convenient.

[0053] In some embodiments of the present application, referring to FIGS. 1-2 and 7, the guide structure 4 includes a guide rod 41 connected to the actuator housing 1, and the lead screw 2 has a guide groove 21, and when the lead screw 2 moves linearly, the guide rod 41 at least partially extends into the guide groove 21. By arranging the guide rod 41 and the guide groove 21 in a guiding manner, the guide rod 41 can guide the linear movement of the lead screw 2, and the working principle is simple and reliable.

[0054] The length direction of the guide groove 21 is the same as the length direction of the lead screw 2, the guide rod 41 is guided with the guide groove 21, when the lead screw 2 moves along the length direction (i.e. the up-down direction shown in FIG. 2), the guide rod 41 is always well matched with the guide groove 21 of the lead screw 2, thereby guiding the linear motion of the lead screw 2, under the guiding effect of the guide rod 41, the lead screw 2 can effectively avoid the off-axis in the movement process, thereby reducing the risk of the lead screw 2 off-grinding, mechanism abnormal sound, failure and the like. 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, the guide rod 41 does not occupy too much internal space of the actuator housing 1, the guide rod 41 has high integration with the lead screw 2, the space ratio of the guide rod 41 is small, so that the structure of the actuator 10 is compact.

[0055] The actuator housing 1 has an installation space inside, 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 machining process, for example, the guide rod 41 and the actuator housing 1 can be an integral molding, or can be a split piece connected by welding, bonding, bolt connection or other forms of fastening connection.

[0056] The length of 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 realize the vertical guidance of the lead screw 2 through the good cooperation of the guide rod 41 and the guide groove 21. The guide rod 41 cooperates with the guide groove 21 inside the lead screw 2, which avoids the long-term wear of the outer circumferential surface of the lead screw 2 and reduces the risk of poor screwing of the nut 3 and the lead screw 2 due to the wear of the outer circumferential surface of the lead screw 2.

[0057] In some embodiments of the present application, the projection of the guide rod 41 in the plane perpendicular to the axis of the guide rod 41 is circular, and the projection of the guide groove 21 in the plane perpendicular to the axis of the guide rod 41 is adapted to the guide rod 41. Thus, while the guide rod 41 guides the lead screw 2 in the up-down direction, it does not affect the circumferential rotation of the lead screw 2, so that the lead screw 2 and the nut 3 remain well screwed, and the running stability of the entire actuator 10 mechanism is increased.

[0058] In some embodiments of the present application, 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. In this way, it can be ensured that the lead screw 2 does not interfere with the guide rod 41 in the movement range.

[0059] In some embodiments of the present application, the length of the guide rod 41 is less than or equal to the movement stroke of the lead screw 2. Since the depth of the guide groove 21 is greater than the movement stroke 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 does not collide with the groove bottom of the guide groove 21, that is, the guide rod 41 does not interfere with the movement of the lead screw 2.

[0060] In some embodiments of the present application, referring to FIG. 2, the inside of the actuator housing 1 has a mounting cavity 14, the nut 3 is located in the mounting cavity 14, and the end of the guide rod 41 extending into the guide groove 21 forms a fitting cavity 5 between the end and the groove bottom of the guide groove 21. The guide rod 41 is provided with an air exchange passage 411, and the air exchange passage 411 communicates the fitting cavity 5 with the mounting cavity 14. When the fitting cavity 5 is a closed cavity (i.e., the guide rod 41 is not provided with the air exchange passage 411), the gas in the fitting cavity 5 generates a large damping force due to frequent compression by the guide rod 41, so that the movement of the guide rod 41 in the guide groove 21 is hindered. The air exchange passage 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 fitting cavity 5, so that the resistance of the guide rod 41 when moving in the guide groove 21 is smaller.

[0061] In some embodiments of the present application, referring to FIGS. 2 and 7, the guide structure 4 further includes a sliding bearing 42, which is arranged at the guide matching position of the guide rod 41 and the guide groove 21. For example, the sliding bearing 42 is mounted on the inner peripheral wall of the guide groove 21, and the inner peripheral surface of the sliding bearing 42 is in guide matching 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 direct contact between the guide rod 41 and the guide groove 21 and causing wear. The sliding bearing 42 plays a role of sliding guide and reducing sliding friction resistance, which is conducive to improving the running stability of the lead screw 2.

[0062] In some embodiments of the present application, the outer peripheral surface of the sliding bearing 42 and the inner peripheral wall of the guide groove 21 are in interference fit, so as to ensure that the sliding bearing 42 can be firmly mounted on the guide groove 21; or the inner peripheral surface of the sliding bearing 42 and the outer peripheral wall of the guide rod 41 are in clearance fit, so as to ensure that the lead screw 2 can move smoothly; or the outer peripheral surface of the sliding bearing 42 and the inner peripheral wall of the guide groove 21 are in interference fit, and the inner peripheral surface of the sliding bearing 42 and the outer peripheral wall of the guide rod 41 are in clearance fit, so as to ensure that the sliding bearing is firmly mounted, and at the same time, the lead screw moves smoothly.

[0063] In some embodiments of the present application, referring to FIG. 2, 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 is spaced apart from the inner peripheral wall of the guide groove 21 by the sliding bearing 42, one end of the air exchange passage 411 communicates to the outer peripheral wall of the guide rod 41, and thus the one end of the air exchange passage 411 communicates with the mounting cavity 14, and the other end of the air exchange passage 411 communicates to the end face of the end of the guide rod 41 extending into the guide groove 21, and thus the other end of the air exchange passage 411 communicates with the fitting cavity 5.

[0064] In the example of FIG. 2, the ventilation passage 411 is two-segmented in shape, and includes a first passage segment 4111 and a second passage segment 4112, the lower end of the guide rod 41 extends into the guide groove 21, one end of the first passage segment 4111 is communicated to the lower end face of the guide rod 41 and communicated to the mating cavity 5, the other end of the first passage segment 4111 is communicated to the second passage segment 4112, and the other end of the second passage segment 4112 is communicated to the outer peripheral wall of the guide rod 41 and communicated to the mounting cavity 14.

[0065] In some embodiments of the present application, the ventilation passage 411 can also be arc-shaped, three-segmented, corrugated, etc.

[0066] In some embodiments of the present application, referring to FIGS. 2-4, the actuator housing 1 has a mounting cavity 14 inside, the nut 3 is located in the mounting cavity 14, one end of the nut 3 is rotatably supported at a first position of the actuator housing 1 by a first bearing 91, the other end of the nut 3 is rotatably supported at a second position of the actuator housing 1 by a second bearing 92, and 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 frictional loss of 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, forming two-point support, thereby enabling the nut 3 to rotate more stably.

[0067] In some embodiments of the present application, referring to FIGS. 2-4 and FIGS. 7-9, the actuator housing 1 has a first axial limiting face 1231 and a second axial limiting face 1331 inside, the nut 3 has a first limiting shoulder 31 and a second limiting shoulder 32, the axial one end of the first bearing 91 abuts against the first limiting shoulder 31, the axial other end of the first bearing 91 abuts against the first axial limiting face 1231, thereby achieving axial limiting of the first bearing 91. The axial one end of the second bearing 92 abuts against the second limiting shoulder 32, and the axial other end of the second bearing 92 abuts against the second axial limiting face 1331, thereby achieving axial limiting of the second bearing 92.

[0068] The first axial limiting face 1231 and the first limiting shoulder 31 are oppositely arranged, and the limiting faces of the first axial limiting face 1231 and the first limiting shoulder 31 are parallel to each other.

[0069] The second axial limiting face 1331 and the second limiting shoulder 32 are oppositely arranged, and the limiting faces of the second axial limiting face 1331 and the second limiting shoulder 32 are parallel to each other.

[0070] In some embodiments, as shown in FIGS. 2-4, the first bearing 91 and the second bearing 92 can each be an angular contact ball bearing, and the first bearing 91 and the second bearing 92 are arranged in an upper-lower opposite manner. 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.

[0071] In other embodiments, the first bearing 91 and the second bearing 92 can each be a deep groove ball bearing.

[0072] In some embodiments of the present application, as shown in FIG. 2, the actuator housing 1 has a housing inner circumferential surface 115, which is 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 to the outer circumferential surface of the lead screw 2, and the outer circumferential surface of the guide ring 43 is in sliding fit with the housing inner circumferential surface 115. When the lead screw 2 moves linearly, the guide ring 43 slides along the housing inner circumferential surface 115, thereby playing a sliding guide role. The guide ring 43 can guide the linear movement of the lead screw 2, effectively avoiding the lead screw 2 from being off-axis during movement, thereby reducing the risks of eccentric wear, abnormal noise, failure, etc. of the lead screw 2, and further enhancing the running stability of the lead screw 2 during axial reciprocating movement.

[0073] In some embodiments of the present application, the guide structure 4 of the actuator 10 can be one of the guide rod 41 and the guide ring 43, or both the guide rod 41 and the guide ring 43 can be provided to achieve double guidance.

[0074] In some embodiments of the present application, as shown in FIG. 2, the actuator 10 further includes a driving component 6, which 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.

[0075] In some embodiments of the present application, as shown in FIG. 2, the driving component 6 is a motor, and the driving component 6 includes a stator assembly 61 and a rotor assembly 62. The stator assembly 61 is mounted to the actuator housing 1, and the stator assembly 61 includes a stator core and a stator winding, and the stator winding is wound on the stator core. The rotor assembly 62 is mounted to the nut 3, and the rotor assembly 62 at least includes a magnetic member. The stator assembly 61 is used to excite the rotor assembly 62 to rotate, so as to drive the nut 3 to rotate.

[0076] The stator assembly 61 is used to provide a required excitation magnetic field. The magnetic member can be a permanent magnet, and the rotor assembly 62 is used to provide a permanent and stable magnetic field. The rotor assembly 62 can further include a retainer, and the magnetic member is mounted to the retainer.

[0077] In some embodiments of the present application, referring to FIGS. 2-4, 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, with one axial end of the mover assembly 62 abutting against the first circumferential protrusion 33 and the other axial end of the mover assembly 62 abutting against the second circumferential protrusion 34. The first circumferential protrusion 33 and the second circumferential protrusion 34 can limit the axial position of the mover assembly 62, so as to ensure the accurate relative axial position of the mover assembly 62 and the nut 3, and prevent the mover assembly 62 from falling off the nut 3, thereby ensuring that the rotation of the mover assembly 62 can be better transmitted to the nut 3, and the actuator 10 has a more stable structure and higher safety in use. The mover assembly 62 can be fixed to the nut 3, so that the mover assembly 62 and the nut 3 can rotate synchronously to drive the lead screw 2 to move linearly back and forth.

[0078] 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, further compresses the vertical (i.e., the axial direction of the nut 3) size space of the actuator 10, and is more conducive to improving the arrangement of the actuator 10 of the present application on the whole vehicle.

[0079] In some embodiments of the present application, the first circumferential protrusion 33 and the nut 3 can be an integral structure, and the first circumferential protrusion 33 is integrally formed with the nut 3.

[0080] In some embodiments of the present application, 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 retainer ring, the nut 3 is provided with a first ring groove, the first retainer ring is installed in the first ring groove, and the first retainer ring protrudes radially outward from the outer periphery of the nut 3.

[0081] In some embodiments of the present application, the second circumferential protrusion 34 and the nut 3 can be an integral structure, and the second circumferential protrusion 34 is integrally formed with the nut 3; in some embodiments of the present application, 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 retainer ring, the nut 3 is provided with a second ring groove, the second retainer ring is installed in the second ring groove, and the second retainer ring protrudes radially outward from the outer periphery of the nut 3.

[0082] In some embodiments of the present application, referring to FIG. 2 and FIG. 7-9, the actuator 10 further comprises 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, the axial one end of the stator positioning ring 7 abuts against the first positioning surface 81, the axial other end of the stator positioning ring 7 abuts against the stator assembly 61, the axial one end of the stator assembly 61 away from the stator positioning ring 7 abuts against the second positioning surface 82. By setting the stator positioning ring 7, the axial position of the stator assembly 61 can be fixed and accurate.

[0083] Referring to FIG. 2 and FIG. 7, the actuator housing 1 has a stator fitting surface 83, the stator assembly 61 and the stator positioning ring 7 are both sleeved on the stator fitting 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, i.e. 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 fitting surface 83.

[0084] In some embodiments of the present application, the stator assembly 61 is press-fitted in the stator fitting surface 83 inside the actuator housing 1 in an interference fit manner.

[0085] In the example of FIG. 2 and FIG. 7, 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, 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.

[0086] The first positioning surface 81 and the second positioning surface 82 are oppositely arranged, and in some embodiments of the present application, the first positioning surface 81 and the second positioning surface 82 are parallel to each other.

[0087] In some embodiments of the present application, at least part of the structure of the actuator housing 1 is adapted to be connected with the vehicle body, one end of the lead screw 2 is adapted to be connected with the vehicle wheel, and the linear movement of the lead screw 2 is adapted to adjust the distance between the vehicle body and the vehicle wheel. The actuator housing 1 is used to connect the vehicle body, and the end of the lead screw 2 extending out of the actuator housing 1 is used to connect the vehicle wheel.

[0088] In some embodiments of the present application, the driving component 6 is an electric motor, and the actuator 10 is in a driving mode, the driving component 6 is used to provide power, and the driving component 6 is capable of driving the nut 3 to rotate when in operation, the nut 3 drives the lead screw 2 to move linearly when rotating, and the rotation is converted into linear motion to change the distance between the vehicle body and the wheel, thereby achieving full active control of the wheel, and the relative distance between the wheel and the vehicle body can be actively controlled in real time according to different road conditions, and the height of the vehicle body can be dynamically adjusted to meet the individual needs of the vehicle in different height conditions.

[0089] In some embodiments of the present application, referring to FIG. 2, the actuator 10 further comprises a vehicle body connecting structure and a wheel connecting 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 with the wheel through the wheel connecting structure 94, and the actuator housing 1 is adapted to be connected with the vehicle body through the vehicle body connecting structure.

[0090] In some embodiments of the present application, the vehicle body connecting structure is a tower top, and the actuator housing 1 is connected with the vehicle body through the tower top.

[0091] In some embodiments of the present application, the vehicle body connecting structure is a stud structure 93, which can be provided on the actuator housing 1, for example, as shown in FIGS. 1-2 and 5-7, the stud structure 93 is provided 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, when the actuator 10 is connected with the vehicle body, the stud structure 93 on the actuator housing 1 can be used to connect with the vehicle body, thereby reducing the use of intermediate structures such as tower tops, and thus reducing the weight. Specifically, when the stud structure 93 is connected with the vehicle body, a fastening nut is used to cooperate with the stud structure 93 to achieve fastening connection between the stud structure 93 and the vehicle body. In some embodiments of the present application, the number of stud structures 93 can be one, or the number of stud structures 93 can also be multiple.

[0092] Referring to FIGS. 1-2 and 5-7, 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 face of the closed end plate.

[0093] Referring to FIG. 2, the wheel connecting structure 94 is a lower fork arm, and the lower fork arm is connected and fixed with the lead screw 2 through a fastener 97, and the lower fork arm is used to connect the lead screw 2 with the wheel end. The lead screw 2 drives the lower fork arm to move linearly, thereby achieving control of the position of the wheel end.

[0094] In some embodiments of the present application, the fastener 97 can be a screw, and the lower end of the lead screw 2 is provided with a threaded hole, and the screw is screwed into the threaded hole after passing through the lower fork arm, thereby achieving fastening connection between the lower fork arm and the lead screw 2.

[0095] In some embodiments of the present application, the fastener 97 is a bolt, the lower end of the screw rod 2 is provided with a light hole, and the screw is screwed with the nut 3 after passing through the light hole of the lower fork arm and the screw rod 2, so as to achieve the fastening connection of the lower fork arm and the screw rod 2.

[0096] In some embodiments of the present application, referring to FIGS. 1-2, the actuator 10 further comprises an elastic support 95, the elastic support 95 is sleeved outside the screw rod 2, and the elastic support 95 is located between the wheel connecting structure 94 and the actuator housing 1. One end of the elastic support 95 is connected to the actuator housing 1, and the other end of the elastic support 95 is connected to the wheel connecting structure 94. The elastic support 95 is used to bear part of the body weight, so as to reduce the active thrust required by the actuator 10. Referring to FIGS. 1-2, the elastic support 95 can be a coil spring.

[0097] In some embodiments of the present application, referring to FIGS. 1-2, the actuator 10 further comprises a dust cover 96, the dust cover 96 is sleeved outside the screw rod 2, and the dust cover 96 is located between the wheel connecting structure 94 and the actuator housing 1. The actuator housing 1 has a housing hole 131 for the screw rod 2 to extend out, 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 water, dust and other impurities outside the actuator 10. For example, the dust cover 96 can prevent external water vapor, dust, sundries and the like from entering the installation cavity 14 inside the actuator housing 1 through the housing hole 131.

[0098] In some embodiments, the principle of the whole actuator 10 active actuation is that the stator assembly 61 of the driving component 6 drives the rotor assembly 62 to rotate, the rotor assembly 62 drives the nut 3 to rotate, the nut 3 drives the screw rod 2 to rotate and linearly move, so as to realize the conversion of rotary motion and linear motion. The guide structure 4 strictly limits the actuation of the screw rod 2 in the vertical direction. Through the control strategy, the relative distance between the wheel and the vehicle body is dynamically adjusted in real time, so as to meet the demand of vehicle 1000 driving comfort.

[0099] In some embodiments of the present application, referring to FIGS. 1-2 and 5-7, the actuator housing 1 comprises 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, the third housing 13 is connected to the other end of the second housing 12, and the first housing 11, the second housing 12 and the third housing 13 form a mounting cavity 14 in communication. The first housing 11 has a stroke space 113 inside for linear movement of the lead screw 2. The second housing 12 has a motor mounting space 120 inside, which is in communication with the stroke space 113, and is used to mount 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, and the other end of the lead screw 2 extends through the third housing 13 and out of the actuator housing 1.

[0100] Referring to FIG. 7, the third housing 13 has an end cover space 132 inside, which is in communication with the motor mounting space 120, and the stroke space 113, the motor mounting space 120 and the end cover space 132 together form the mounting cavity 14.

[0101] The third housing 13 and the second housing 12 can be connected and fixed by connecting members such as bolts, rivets, etc.

[0102] In some embodiments of the present application, the first housing 11 and the second housing 12 are of an integrated structure.

[0103] Or in some other embodiments of the present application, the first housing 11 and the second housing 12 are of a split structure. 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 a split structure is beneficial for assembly and disassembly of the parts inside the first housing 11 and the second housing 12.

[0104] Referring to FIGS. 2-4, one end of the nut 3 is rotatably supported on the second housing 12 by a first bearing 91, and the other end of the nut 3 is rotatably supported on the third housing 13 by a second bearing 92. A first axial limiting surface 1231 is located on the second housing 12, and a second axial limiting surface 1331 is located on the third housing 13.

[0105] In some embodiments of the present application, referring to FIGS. 7-8, the second housing 12 has a second through hole 124 near the first housing 11, which can be used for the lead 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 to connect the motor mounting space 120 and the stroke space 113, so that the lead screw 2 can pass through smoothly.

[0106] In some embodiments of the present application, referring to FIGS. 2, 7-9, the second housing 12 includes a second housing body 121 and a second housing end plate 122, the second housing body 121 and the second housing end plate 122 are connected, the third housing 13 is connected with the second housing body 121, the first housing 11 is connected with the second housing end plate 122, a second through hole 124 is formed in the second housing end plate 122, the second through hole 124 is in communication with the motor mounting space 120, and the second through hole 124 is used for allowing the lead screw 2 to pass through.

[0107] In some embodiments of the present application, referring to FIGS. 2, 7 and 9, 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 stroke space 113 is formed in the first housing body 111, the first housing flange 112 protrudes outward along the radial direction of the first housing body 111, and the first housing flange 112 is connected with the second housing end plate 122. The upper end of the first housing body 111 is adapted to be connected with the vehicle body, and the lower end of the first housing body 111 has an opening structure for communicating the stroke space 113 to the second housing 12, which can allow the lead screw 2 to pass through.

[0108] Referring to FIGS. 7-8, the first housing flange 112 is provided with a first mounting hole 1121, the second housing end plate 122 is provided with a second upper mounting hole 1221, the first mounting hole 1121 and the second upper mounting hole 1221 are at least partially in communication, 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 of the second housing 12 and the first housing 11.

[0109] In some embodiments of the present application, one of the first mounting hole 1121 and the second upper mounting hole 1221 is a light hole, and the other is a threaded hole, and a screw is used to pass through the light hole and be fastened in the threaded hole.

[0110] In some embodiments of the present application, both the first mounting hole 1121 and the second upper mounting hole 1221 are light holes, as shown in FIG. 8, a bolt is used to pass through the two light holes and be screwed with a fastening nut.

[0111] In some embodiments of the present application, the number of the first mounting hole 1121 is one, or the number of the first mounting hole 1121 is multiple, the number of the first mounting hole 1121 is the same as that of the second upper mounting hole 1221 and they are one-to-one corresponding. When the number of the first mounting hole 1121 is multiple, referring to FIGS. 5, 7-8, the multiple first mounting holes 1121 can be arranged on the same circle with intervals, thereby facilitating the machining and manufacturing of the first mounting hole 1121, and facilitating the threaded fastener to pass through the first mounting hole 1121 and the second upper mounting hole 1221 and be fastened.

[0112] In some embodiments of the present application, referring to FIG. 3, FIG. 7-FIG. 8, the second housing end plate 122 is provided with a first bearing mounting seat 123 for mounting the first bearing 91, the first bearing mounting seat 123 comprises a first axial limiting surface 1231 for stopping and limiting the axial one end surface of the first bearing 91 and a first circumferential mounting surface 1232 for mounting the outer circumferential surface of the first bearing 91, and the second through hole 124 penetrates the annular space surrounded by the first circumferential mounting surface 1232 in the axial direction.

[0113] In some embodiments of the present application, the first housing 11 has a first stop structure 114 at the end edge close to the second housing 12, which is used to ensure the coaxiality of the assembly of the first housing 11 and the second housing 12. At least a part of the first stop structure 114 extends into the second through hole 124, and the first stop structure 114 comprises a first axial stop surface 1141 and a first circumferential stop surface 1142, the end surface of the second housing 12 close to the first housing 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 housing 11 and the second housing 12 have high coaxiality.

[0114] In some embodiments of the present application, referring to FIG. 2, FIG. 7 and FIG. 9, the 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, and the third housing 13 is provided with a housing hole 131 for the lead screw 2 to pass through, and the housing hole 131 is in communication with the motor mounting space 120.

[0115] Referring to FIG. 2, FIG. 7 and FIG. 9, the lower end of the second housing body 121 is provided with a second lower mounting hole 1211, and the third housing 13 is provided with a third mounting hole 135, the second lower mounting hole 1211 and the third mounting hole 135 are at least partially in communication, and a threaded fastener passes through the third mounting hole 135 and the second lower mounting hole 1211 and is fastened to realize the connection and fixation of the second housing 12 and the third housing 13.

[0116] In some embodiments of the present application, one of the third mounting hole 135 and the second lower mounting hole 1211 is a light hole, and the other is a threaded hole, and a screw is used to pass through the light hole and fasten in the threaded hole.

[0117] In some embodiments of the present application, the third mounting hole 135 and the second lower mounting hole 1211 are both light holes, and a bolt is used to pass through the two light holes and is screwed with a fastening nut.

[0118] In some embodiments of the present application, the third mounting hole 135 is one or more, and the number of the third mounting hole 135 is the same as that of the second lower mounting hole 1211 and the positions of the third mounting hole 135 and the second lower mounting hole 1211 are one-to-one corresponding. When the third mounting hole 135 is multiple, the multiple third mounting holes 135 can be arranged on the same circle at intervals, thereby facilitating the machining and manufacturing of the third mounting hole 135, and facilitating the threaded fastener to pass through the third mounting hole 135 and the second lower mounting hole 1211 and be fastened.

[0119] In some embodiments of the present application, referring to FIGS. 4, 7 and 9, the third housing 13 is provided with a second bearing mounting seat 133 for mounting the second bearing 92, the second bearing mounting seat 133 comprises a second axial limiting surface 1331 for stopping and limiting an axial end surface of the second bearing 92 and a second circumferential mounting surface 1332 for mounting an outer circumferential surface of the second bearing 92, and the housing hole 131 penetrates an annular space surrounded by the second circumferential mounting surface 1332 in the axial direction.

[0120] In some embodiments of the present application, an end of the third housing 13 close to the second housing 12 is provided with a second stop structure 134 for ensuring the assembly coaxiality of the second housing 12 and the third housing 12. The second stop structure 134 comprises a second axial stop surface 1341 and a second circumferential stop surface 1342, and 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 high coaxiality.

[0121] In some embodiments of the present application, referring to FIGS. 2 and 7, 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.

[0122] In some embodiments of the present application, the second positioning surface 82 and the second axial stop surface 1341 can be the same plane as shown in FIG. 9, or can be different planes.

[0123] Referring to FIG. 10, the suspension assembly 100 according to the second aspect of the present application comprises the actuator 10 of the above-mentioned embodiments.

[0124] The guide structure 4 arranged between the lead screw 2 of the actuator 10 and the actuator housing 1 of the suspension assembly 100 according to the embodiments of the present application can guide the linear motion of the lead screw 2, which is conducive to strengthening the stability of the lead screw 2 during the axial reciprocating motion, and the working principle is simple and reliable.

[0125] Referring to FIG11, the vehicle 1000 according to a third aspect embodiment of the present application includes the suspension assembly 100 of the above embodiment.

[0126] According to the embodiments of this application, the vehicle 1000 has a suspension assembly 100 including an actuator 10. The guide structure 4 provided between the lead screw 2 of the actuator 10 and the actuator housing 1 can guide the linear movement of the lead screw 2, which is beneficial to enhance the stability of the lead screw 2 in the process of axial reciprocating motion. The working principle is simple and reliable.

[0127] In the description of this application, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0128] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0129] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0130] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An actuator (10), wherein, include: Actuator housing (1); Lead screw (2); and Nut (3), the nut (3) is rotatably mounted on the actuator housing (1), the nut (3) is screwed into the lead screw (2), and the nut (3) can drive the lead screw (2) to move linearly when it rotates; A guide structure (4) is provided between the lead screw (2) and the actuator housing (1). The guide structure (4) is used to guide the lead screw (2) so that the lead screw (2) moves linearly.

2. The actuator (10) according to claim 1, wherein, The guide structure (4) includes a guide rod (41) 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) extends at least partially into the guide groove (21).

3. The actuator (10) according to claim 2, wherein, 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).

4. The actuator (10) according to claim 3, wherein, The length of the guide rod (41) is less than or equal to the travel of the lead screw (2).

5. The actuator (10) according to any one of claims 2-4, wherein, The actuator housing (1) has an internal mounting cavity (14), the nut (3) is located in the mounting cavity (14), and a mating cavity (5) is formed between the end of the guide rod (41) that extends into the guide groove (21) and the bottom of the guide groove (21). The guide rod (41) is provided with a ventilation channel (411), which connects the mating cavity (5) and the mounting cavity (14).

6. The actuator (10) according to claim 5, wherein, The guide structure (4) also includes a sliding bearing (42), which is disposed at the guide engagement point between the guide rod (41) and the guide groove (21).

7. The actuator (10) according to claim 6, wherein, 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 the end face of the guide rod (41) that extends into the guide groove (21).

8. The actuator (10) according to any one of claims 1-7, wherein, The actuator housing (1) has an internal mounting cavity (14), and the nut (3) is located in the mounting cavity (14). One end of the nut (3) is rotatably supported on the actuator housing (1) at a first position by a first bearing (91), and the other end of the nut (3) is rotatably supported on the actuator housing (1) at a second position by 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, wherein, 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). 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).

10. The actuator (10) according to any one of claims 1-9, wherein, The actuator housing (1) has an inner circumferential surface (115) 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 which is mounted on the outer circumferential surface of the lead screw (2), and the outer circumferential surface of the guide ring (43) is in sliding engagement with the inner circumferential surface (115) of the housing.

11. The actuator (10) according to any one of claims 1-10, wherein, The actuator (10) further includes a drive component (6) for driving the nut (3) to rotate.

12. The actuator (10) according to claim 11, wherein, The drive component (6) includes a stator assembly (61) and a mover assembly (62). The stator assembly (61) is mounted on the actuator housing (1) and includes 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 includes at least a magnetic element. 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, wherein, The nut (3) is provided with a first circumferential protrusion (33) and a second circumferential protrusion (34). Both the first circumferential protrusion (33) and the second circumferential protrusion (34) protrude outward along the radial direction of the nut (3). One axial end of the moving part assembly (62) abuts against the first circumferential protrusion (33), and the other axial end of the moving part assembly (62) abuts against the second circumferential protrusion (34).

14. The actuator (10) according to claim 12 or 13, wherein, The actuator (10) further includes 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), and the other axial end of the stator positioning ring (7) abuts against the stator assembly (61). The 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 any one of claims 1-14, wherein, At least a portion of the actuator housing (1) is adapted to be connected to the vehicle body, one end of the lead screw (2) is adapted to be connected to the wheel, and the lead screw (2) is adapted to adjust the distance between the vehicle body and the wheel when it moves linearly.

16. The actuator (10) according to claim 15, wherein, The actuator (10) further includes a body connection structure and a wheel connection structure (94). One end of the lead screw (2) is located inside the actuator housing (1), and the other end of the lead screw (2) is adapted to extend outside the actuator housing (1) to be connected to the wheel through the wheel connection structure (94). The actuator housing (1) is adapted to be connected to the body through the body connection structure.

17. The actuator (10) according to claim 16, wherein, The actuator (10) further includes an elastic support (95), which is sleeved on the lead screw (2) and located between the wheel connection structure (94) and the actuator housing (1).

18. The actuator (10) according to claim 16 or 17, wherein, The actuator (10) also includes a dust cover (96), which is fitted over the lead screw (2) and 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, with the housing hole (131) located within the dustproof space.

19. A suspension assembly (100), wherein, The actuator (10) includes any one of claims 1-18.

20. A vehicle (1000), wherein, Includes the suspension assembly (100) as described in claim 19.

Images