Actuator shell, actuator, suspension assembly and vehicle

Abstract

The utility model discloses an actuator shell, an actuator, a suspension assembly and a vehicle, and relates to the technical field of vehicles. The actuator shell comprises a first shell body, a second shell body and a third shell body, the first shell body is internally provided with a stroke space for an actuating piece to linearly move, the second shell body is internally provided with a motor installation space for installing a motor, the second shell body is connected with the first shell body, the motor installation space is communicated with the stroke space, and the third shell body is connected with the second shell body. And the third shell covers one end, deviating from the first shell, of the second shell. According to the actuator shell disclosed by the utility model, the actuator shell is divided into the first shell, the second shell and the third shell, so that other parts can be conveniently assembled in the actuator shell, the space in the actuator shell is reasonable in layout, and the arrangement of the other parts is facilitated.

Description

Technical Field

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

[0002] In the related art, the actuator includes an actuator housing, a driving component, a nut and a lead screw. The driving component and the nut are installed in the actuator housing. The driving component can be a motor. One end of the lead screw extends into the actuator housing, and the other end of the lead screw can extend out of the actuator housing. However, it is inconvenient to assemble the driving component, the nut and the lead screw in the actuator housing. Therefore, there is room for improvement. Utility Model Content

[0003] The utility model aims to solve one of the above-mentioned technical problems in the prior art at least to a certain extent. To this end, the utility model provides an actuator housing, which is convenient for assembling other components into the actuator housing.

[0004] The utility model also provides an actuator having the actuator housing.

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

[0006] The utility model also provides a vehicle with the suspension assembly.

[0007] According to an embodiment of the utility model, the actuator housing includes: a first housing, a second housing and a third housing, the interior of the first housing has a travel space for linear movement of the actuator, the interior of the second housing has a motor installation space for installing the motor, the second housing is connected to the first housing, the motor installation space is connected to the travel space, and the third housing cover is arranged on the end of the second housing facing away from the first housing.

[0008] According to the actuator housing of the embodiment of the utility model, by dividing the actuator housing into a first housing, a second housing and a third housing, it is convenient to assemble other components into the actuator housing, and the space layout inside the actuator housing is reasonable, which is convenient for the arrangement of other components.

[0009] According to some embodiments of the present invention, the first shell and the second shell are an integrated structure; or, the first shell and the second shell are a split structure.

[0010] According to some embodiments of the present invention, a second through hole for allowing the actuating member to pass through is provided at one end of the second shell body close to the first shell body.

[0011] According to some embodiments of the present invention, the second shell includes a second shell body and a second shell end plate connected to each other, the third shell is connected to the second shell body, the first shell is connected to the second shell end plate, and the second through hole is opened in the second shell end plate.

[0012] According to some embodiments of the present invention, the first shell includes a first shell body and a first shell flange connected to each other, the travel space is formed in the first shell body, the first shell flange protrudes radially outward along the first shell body, and the first shell flange is connected to the second shell end plate.

[0013] According to some embodiments of the utility model, a first bearing mounting seat is provided on the second shell end plate, and the first bearing mounting seat includes a first axial limiting surface and a first circumferential mounting surface, the first axial limiting surface is used to stop and limit the axial end surface of the first bearing, the first circumferential mounting surface is used to install the outer circumferential surface of the first bearing, and the second through hole axially penetrates the annular space surrounded by the first circumferential mounting surface.

[0014] According to some embodiments of the utility model, a first stop structure is provided at the periphery of one end of the first shell close to the second shell, at least a portion of the first stop structure extends into the second through hole, the first stop structure includes a first axial stop surface and a first circumferential stop surface, an end surface of the second shell close to the first shell abuts against the first axial stop surface, and the hole wall of the second through hole abuts against the first circumferential stop surface.

[0015] According to some embodiments of the present invention, one end of the second shell close to the third shell is an open end, the third shell covers the open end, the third shell is provided with a shell hole for the actuator to pass through, and the shell hole is connected to the motor installation space.

[0016] According to some embodiments of the utility model, the third shell is provided with a second bearing mounting seat, the second bearing mounting seat includes a second axial limiting surface and a second circumferential mounting surface, the second axial limiting surface is used to stop and limit the axial end face of the second bearing, the second circumferential mounting surface is used to mount the outer circumferential surface of the second bearing, and the shell hole axially penetrates the annular space surrounded by the second circumferential mounting surface.

[0017] According to some embodiments of the utility model, a second stop structure is provided at one end of the third shell close to the second shell, the second stop structure includes a second axial stop surface and a second circumferential stop surface, the end surface of the second shell abuts against the second axial stop surface, and the outer circumferential surface of the second shell abuts against the second circumferential stop surface.

[0018] According to some embodiments of the utility model, a stator limiting structure is provided in the actuator housing, and the stator limiting structure is used to install and position the stator assembly of the motor.

[0019] According to some embodiments of the present utility model, the stator limiting structure includes a first positioning surface, a second positioning surface and a stator mating surface, the first positioning surface and the second positioning surface are spaced apart, a stator installation space is formed between the first positioning surface and the second positioning surface, and the stator mating surface is located between the first positioning surface and the second positioning surface and is used to install the outer peripheral surface of the stator assembly of the motor.

[0020] According to some embodiments of the present invention, the first positioning surface and the stator matching surface are both formed on the second housing, and the second positioning surface is formed on the third housing.

[0021] According to some embodiments of the present utility model, a stud structure is arranged outside the first shell, and the stud structure is used to be connected to the vehicle body.

[0022] The actuator according to the second embodiment of the utility model includes the above-mentioned actuator housing.

[0023] According to the actuator of the embodiment of the utility model, by dividing the actuator housing into a first housing, a second housing and a third housing, it is convenient to assemble other components into the actuator housing, and the space layout inside the actuator housing is reasonable, which is convenient for the arrangement of other components.

[0024] According to some embodiments of the utility model, the actuator further includes: an actuating member and a nut, wherein the actuating member is a lead screw, and the nut is rotatably mounted on the second housing and the third housing, and the nut is threadedly engaged with the lead screw, and the nut can drive the lead screw to move linearly when it rotates.

[0025] According to some embodiments of the utility model, the actuator also includes: a first bearing and a second bearing, the first bearing being mounted on a first bearing mounting seat of the second housing, and one end of the nut being rotatably supported on the second housing through the first bearing; the second bearing being mounted on a second bearing mounting seat of the third housing, and the other end of the nut being rotatably supported on the third housing through the second bearing, and the first bearing and the second bearing being spaced apart along the axial direction of the nut.

[0026] According to some embodiments of the utility model, the actuator also includes: a motor, the motor 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 on the stator core, the mover assembly is installed on the nut and includes at least a magnetic part, and the stator assembly is used to excite the mover assembly to rotate to drive the nut to rotate.

[0027] The suspension assembly according to the embodiment of the third aspect of the utility model includes the above-mentioned actuator.

[0028] According to the suspension assembly of the embodiment of the utility model, the actuator thereof is convenient for assembling other components into the actuator housing by dividing the actuator housing into a first housing, a second housing and a third housing. The space layout inside the actuator housing is reasonable, which is convenient for arranging other components.

[0029] A vehicle according to an embodiment of the fourth aspect of the utility model includes the above-mentioned suspension assembly.

[0030] According to the vehicle of the embodiment of the utility model, the actuator of the suspension assembly thereof is convenient for assembling other components into the actuator housing by dividing the actuator housing into a first housing, a second housing and a third housing. The space layout inside the actuator housing is reasonable, which is convenient for arranging other components.

[0031] 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

[0032] Figure 1 is a front view of an actuator according to an embodiment of the utility model;

[0033] Figure 2 yes Figure 1 Sectional view of AA in the middle;

[0034] Figure 3 yes Figure 2 A partial enlarged schematic diagram of point B in the middle;

[0035] Figure 4 yes Figure 2 A partial enlarged schematic diagram of point C in the middle;

[0036] Figure 5 It is a three-dimensional schematic diagram of the actuator housing, guide structure and stud structure;

[0037] Figure 6 It is the front view of the actuator housing and stud structure;

[0038] Figure 7 yes Figure 6Cross-sectional view of the middle DD;

[0039] Figure 8 yes Figure 7 A partial enlarged schematic diagram of point E in the middle;

[0040] Fig. 9 yes Figure 7 A partial enlarged schematic diagram of point F in the middle;

[0041] Fig.10 is a schematic diagram of a suspension assembly according to an embodiment of the utility model;

[0042] Fig.11 is a schematic diagram of a vehicle according to an embodiment of the utility model.

[0043] Reference numerals:

[0044] 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 mounting surface 1332, second stop structure 134, second axial stop surface 1341, second circumferential stop surface 1342, third mounting hole 135, mounting cavity 14, screw 2, guide groove 21, nut 3, first limit shoulder 31, second limit shoulder 32, first circumferential protrusion 33, second circumferential protrusion 34, guide structure 4, guide rod 41, ventilation channel 411, first channel section 4111, second channel section 4112, sliding bearing 42, guide ring 43, mating cavity 5, motor 6, stator assembly 61, mover 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 connecting structure 94, elastic support member 95, dust cover 96, fastener 97. DETAILED DESCRIPTION

[0045] 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.

[0046] 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.

[0047] Combine the following Figure 1-Figure 11 An actuator housing 1 , an actuator 10 having the actuator housing 1 , 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.

[0048] Reference Figure 1-Figure 2 , Figure 5-Figure 7 As shown, the actuator housing 1 according to the embodiment of the present invention may include a first housing 11 , a second housing 12 and a third housing 13 .

[0049] The first housing 11 has a travel space 113 inside, and the travel space 113 is used for the linear movement of the actuator. The second housing 12 has a motor installation space 120 inside, and the motor installation space 120 is used to install the motor 6. The second housing 12 is connected to the first housing 11, and the motor installation space 120 is connected to the travel space 113. The third housing 13 is covered at the end of the second housing 12 away from the first housing 11. The third housing 13 and the second housing 12 can be connected and fixed by connecting members such as bolts, rivets, etc.

[0050] 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 .

[0051] According to the actuator housing 1 of the embodiment of the utility model, by dividing the actuator housing 1 into a first housing 11, a second housing 12 and a third housing 13, it is convenient to assemble other components into the actuator housing 1, and the space layout in the actuator housing 1 is reasonable, which is convenient for the arrangement of other components.

[0052] In some embodiments of the present invention, the first housing 11 and the second housing 12 are an integrated structure.

[0053] 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.

[0054] In some embodiments of the utility model, a second through hole 124 for the actuator to pass through is provided at one end of the second housing 12 close to the first housing 11. The second housing 12 is a cylindrical structure, and a closed end surface 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 surface. The second through hole 124 cooperates with the opening structure at the bottom of the first housing body 111, and can connect the motor installation space 120 with the stroke space 113, so that the lead screw 2 can pass smoothly.

[0055] 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.

[0056] 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.

[0057] Reference Figure 7-Figure 8As 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.

[0058] 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.

[0059] Alternatively, the first mounting hole 1121 and the second upper mounting hole 1221 are both light holes, such as Figure 8 As shown, use bolts to pass through the two holes and then tighten them with the fastening nuts.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] In some embodiments of the present invention, referring to Figure 2 , Figure 7 and Fig. 9 As shown, one end of the second shell 12 close to the third shell 13 is an open end, and the third shell 13 covers the open end. The third shell 13 is provided with a shell hole 131 for the actuator to pass through, and the shell hole 131 is connected to the motor installation space 120.

[0064] Reference Figure 2 , Figure 7 and Fig. 9 As 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] In some embodiments of the present invention, referring to Figure 4 , Figure 7 and Fig. 9As 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.

[0069] 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.

[0070] In some embodiments of the present invention, a stator limiting structure is provided in the actuator housing 1 , and the stator limiting structure is used to install and position the stator assembly 61 of the motor 6 .

[0071] In some embodiments of the present invention, the stator limiting structure includes a first positioning surface 81, a second positioning surface 82 and a stator matching surface 83, the first positioning surface 81 and the second positioning surface 82 are spaced apart, a stator installation space is formed between the first positioning surface 81 and the second positioning surface 82, the stator matching surface 83 is located between the first positioning surface 81 and the second positioning surface 82, and the stator matching surface 83 is used to install the outer peripheral surface of the stator assembly 61 of the motor 6. Figure 2 , Figure 7 As shown, the actuator 10 includes an actuator housing 1, 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.

[0072] Optionally, the stator assembly 61 is press-fitted onto the stator mating surface 83 inside the actuator housing 1 in an interference fit manner.

[0073] exist Figure 2 , Figure 7In 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.

[0074] 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.

[0075] In some embodiments of the present invention, referring to Figure 2 , Figure 7 As 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 .

[0076] 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.

[0077] In some embodiments of the present invention, referring to Figure 1-Figure 2 , Figure 5-Figure 7 As shown, a stud structure 93 is provided outside the first housing 11, 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 achieved by connecting the stud structure 93 on the actuator housing 1 with the vehicle body, thereby reducing the use of intermediate structures and reducing weight. Specifically, when the stud structure 93 is connected with the vehicle body, the fastening nut cooperates with the stud structure 93 to achieve the fastening connection between the stud structure 93 and the vehicle body. Optionally, there can be one or more stud structures 93.

[0078] 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.

[0079] Reference Figure 1-Figure 2 As shown, the actuator 10 according to the second embodiment of the utility model includes the actuator housing 1 of the above embodiment.

[0080] According to the actuator 10 of the embodiment of the utility model, by dividing the actuator housing 1 into a first housing 11, a second housing 12 and a third housing 13, it is convenient to assemble other components into the actuator housing 1, and the space layout inside the actuator housing 1 is reasonable, which is convenient for the arrangement of other components.

[0081] In some embodiments of the present invention, referring to Figure 1-Figure 2As shown, the actuator 10 also includes: an actuating member and a nut 3. The actuating member is a lead screw 2. The nut 3 is rotatably mounted on the second housing 12 and the third housing 13. The nut 3 is threadedly engaged with the lead screw 2. When the nut 3 rotates, it can drive the lead screw 2 to move linearly.

[0082] In some embodiments of the present invention, referring to Figure 2-Figure 4 As shown, the actuator 10 further includes: a first bearing 91 and a second bearing 92, the first bearing 91 is mounted on the first bearing mounting seat 123 of the second housing 12, and one end of the nut 3 is rotatably supported on the second housing 12 through the first bearing 91; the second bearing 92 is mounted on the second bearing mounting seat 133 of the third housing 13, and the other end of the nut 3 is rotatably supported on the third housing 13 through the 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 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.

[0083] In some embodiments of the present invention, referring to Figure 2 As shown, the actuator 10 also includes: a motor 6, the motor 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.

[0084] 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.

[0085] In some embodiments of the present invention, referring to Figure 2-Figure 4As 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.

[0086] 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 is further compressed, which is more conducive to improving the arrangeability of the actuator of the utility model on the entire vehicle.

[0087] 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.

[0088] 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.

[0089] The nut 3 is coaxially matched with the lead screw 2. A spiral raceway may 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.

[0090] Reference Figure 2 As shown, 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.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] In some embodiments of the present invention, referring to Figure 1-Figure 2 and Figure 7 As 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.

[0095] Specifically, the length direction of the guide groove 21 is the same as the length direction of the lead screw 2, and the guide rod 41 is guided and matched with the guide groove 21. Specifically, when the lead 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.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] In some embodiments of the present invention, referring to Figure 2As 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.

[0102] 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.

[0103] 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.

[0104] In some embodiments of the present invention, referring to Figure 2 As 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.

[0105] exist Figure 2In 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.

[0106] 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.

[0107] 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 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, and the other axial end of the first bearing 91 abuts against the first axial limit surface 1231, thereby achieving axial limitation of the first bearing 91. 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, thereby achieving axial limitation of the second bearing 92. Specifically, 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.

[0108] 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.

[0109] 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.

[0110] 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.

[0111] Optionally, in other embodiments, the first bearing 91 and the second bearing 92 may both be deep groove ball bearings.

[0112] In some embodiments of the present invention, referring to Figure 2As 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.

[0113] 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.

[0114] In some embodiments of the present invention, referring to Figure 2 As shown, the stud structure 93 provided on the first shell 11 is a vehicle body connection structure, and the actuator 10 also includes a wheel connection structure 94. One end of the lead screw 2 is located in the actuator shell 1, and the other end of the lead screw 2 is suitable for extending out of the actuator shell 1 to be connected to the wheel through the wheel connection structure 94. The actuator shell 1 is suitable for being connected to the vehicle body through the stud structure 93.

[0115] Reference Figure 2 As 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.

[0116] 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.

[0117] 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.

[0118] In a specific embodiment, the active actuation principle of the entire actuator 10 is: the stator assembly 61 of the motor 6 drives the mover assembly 62 to rotate, the mover 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.

[0119] Reference Fig.10 As shown, the suspension assembly 100 according to the third 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 actuator 10 thereof is convenient for assembling other components into the actuator housing 1 by dividing the actuator housing 1 into a first housing 11, a second housing 12 and a third housing 13. The space layout in the actuator housing 1 is reasonable, which is convenient for arranging other components.

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

[0122] According to the vehicle 1000 of the embodiment of the utility model, the actuator 10 of the suspension assembly 100 is convenient for assembling other components into the actuator housing 1 by dividing the actuator housing 1 into a first housing 11, a second housing 12 and a third housing 13. The space layout inside the actuator housing 1 is reasonable, which facilitates the arrangement of other components.

[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 housing (1), characterized in that: include: A first housing (11), wherein the interior of the first housing (11) has a travel space (113) for linear movement of an actuating member; a second housing (12), wherein the interior of the second housing (12) has a motor installation space (120) for installing a motor (6), the second housing (12) is connected to the first housing (11), and the motor installation space (120) is in communication with the travel space (113); and A third shell (13), wherein the third shell (13) is covered on an end of the second shell (12) away from the first shell (11).

2. The actuator housing (1) according to claim 1, characterized in that The first shell (11) and the second shell (12) are of an integrated structure; or the first shell (11) and the second shell (12) are of a split structure.

3. The actuator housing (1) according to claim 1, characterized in that: A second through hole (124) for allowing an actuating member to pass through is provided at one end of the second shell (12) close to the first shell (11).

4. The actuator housing (1) according to claim 3, characterized in that The second shell (12) comprises a second shell body (121) and a second shell end plate (122) which are connected to each other, 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).

5. The actuator housing (1) according to claim 4, characterized in that The first shell (11) includes a first shell body (111) and a first shell flange (112) connected to each other. The travel space (113) is formed in the first shell body (111). The first shell flange (112) protrudes outward in the radial direction of the first shell body (111). The first shell flange (112) is connected to the second shell end plate (122).

6. The actuator housing (1) according to claim 4, characterized in that A first bearing mounting seat (123) is provided on the second housing end plate (122), and the first bearing mounting seat (123) includes a first axial limiting surface (1231) and a first circumferential mounting surface (1232), wherein the first axial limiting surface (1231) is used to stop and limit the axial end surface of the first bearing (91), and the first circumferential mounting surface (1232) is used to mount the outer circumferential surface of the first bearing (91), and the second through hole (124) axially penetrates the annular space surrounded by the first circumferential mounting surface (1232).

7. The actuator housing (1) according to claim 3, characterized in that 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 at least a portion of the first stop structure (114) extends into the second through hole (124). The first stop structure (114) includes a first axial stop surface (1141) and a first circumferential stop surface (1142). An end surface of the second shell (12) close to the first shell (11) abuts against the first axial stop surface (1141), and a hole wall of the second through hole (124) abuts against the first circumferential stop surface (1142).

8. The actuator housing (1) according to claim 1, characterized in that One end of the second shell (12) close to the third shell (13) is an open end, and the third shell (13) covers the open end. The third shell (13) is provided with a shell hole (131) for an actuating member to pass through, and the shell hole (131) is connected to the motor installation space (120).

9. The actuator housing (1) according to claim 8, characterized in that The third housing (13) is provided with a second bearing mounting seat (133), the second bearing mounting seat (133) comprises 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), the second circumferential mounting surface (1332) is used to mount the outer circumferential surface of the second bearing (92), and the housing hole (131) axially penetrates the annular space surrounded by the second circumferential mounting surface (1332).

10. The actuator housing (1) according to any one of claims 1 to 9, characterized in that: A second stop structure (134) is provided at one end of the third shell (13) close to the second shell (12), and 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 shell (12) abuts against the second axial stop surface (1341), and the outer peripheral surface of the second shell (12) abuts against the second circumferential stop surface (1342).

11. The actuator housing (1) according to any one of claims 1 to 9, characterized in that: A stator limiting structure is provided in the actuator housing (1), and the stator limiting structure is used to install and position the stator assembly (61) of the motor (6).

12. The actuator housing (1) according to claim 11, characterized in that The stator limiting structure comprises a first positioning surface (81), a second positioning surface (82) and a stator matching surface (83); the first positioning surface (81) and the second positioning surface (82) are spaced apart; a stator installation space is formed between the first positioning surface (81) and the second positioning surface (82); the stator matching surface (83) is located between the first positioning surface (81) and the second positioning surface (82) and is used to install the outer peripheral surface of the stator assembly (61) of the motor (6).

13. The actuator housing (1) according to claim 12, characterized in that 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).

14. The actuator housing (1) according to any one of claims 1 to 9, characterized in that: A stud structure (93) is arranged outside the first shell (11), and the stud structure (93) is used for connecting to a vehicle body.

15. An actuator (10), characterized in that: The invention comprises an actuator housing (1) according to any one of claims 1 to 14.

16. The actuator (10) according to claim 15, characterized in that The actuator (10) further comprises: an actuating member, wherein the actuating member is a lead screw (2); and A nut (3), wherein the nut (3) is rotatably mounted on the second housing (12) and the third housing (13), and the nut (3) is threadedly engaged with the lead screw (2), and when the nut (3) rotates, it can drive the lead screw (2) to move linearly.

17. The actuator (10) according to claim 16, characterized in that The actuator (10) further comprises: a first bearing (91), the first bearing (91) being mounted on a first bearing mounting seat (123) of the second housing (12), and one end of the nut (3) being rotatably supported on the second housing (12) through the first bearing (91); and A second bearing (92), wherein the second bearing (92) is mounted on a second bearing mounting seat (133) of the third housing (13), the other end of the nut (3) is rotatably supported on the third housing (13) through the second bearing (92), and the first bearing (91) and the second bearing (92) are spaced apart along the axial direction of the nut (3).

18. The actuator (10) according to claim 16, characterized in that The actuator (10) further comprises: a motor (6), the motor (6) comprising a stator assembly (61) and a mover assembly (62), the stator assembly (61) being mounted on the actuator housing (1) and comprising a stator core and a stator winding, the stator winding being wound around the stator core, the mover assembly (62) being mounted on the nut (3) and comprising at least a magnetic component, the stator assembly (61) being used to excite the mover assembly (62) to rotate, thereby driving the nut (3) to rotate.

19. A suspension assembly (100), characterized in that: The invention comprises an actuator (10) according to any one of claims 15 to 18.

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

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