Stator assembly, actuator, suspension device and vehicle

Abstract

The invention discloses a stator assembly, an actuator, a suspension device and a vehicle, relates to the technical field of vehicles, and aims to solve the problem that a large amount of external impurities enter the actuator to affect the reliability of the actuator. The stator assembly is suitable for being connected with a vehicle body end. The stator assembly comprises a center assembly and a top cover which are relatively fixed, a gap is formed between the center assembly and the top cover, the stator assembly further comprises a sealing assembly, and the sealing assembly is used for sealing the gap.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and particularly to a stator assembly, an actuator, a suspension device, and a vehicle. Background Art

[0002] An actuator is a device connected between the vehicle body and the wheel, which mainly generates a thrust on the vehicle body to reduce the vibration of the vehicle body, thereby improving the comfort and handling performance of the vehicle.

[0003] Since the actuator is exposed to the external environment, during the driving of the vehicle, external impurities such as dust, water, and oil will adhere to the actuator and then enter the actuator. A large amount of impurities entering the actuator will affect the working performance of the actuator and the reliability of the actuator. Summary of the Invention

[0004] The purpose of the present invention is to provide a stator assembly, an actuator, a suspension device, and a vehicle, aiming to solve the problem of how to avoid a large amount of external impurities from entering the interior of the actuator and affecting the reliability of the actuator.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present invention provides a stator assembly, which is adapted to be connected to the vehicle body end; the stator assembly includes a relatively fixed central component and a top cover, a gap is formed between the central component and the top cover, and the stator assembly further includes a sealing component for sealing the gap.

[0007] The stator assembly provided by the embodiment of the present application seals the gap between the central component and the top cover through the sealing component, which can avoid external impurities from entering the top cover through the gap between the central component and the top cover, thereby reducing the impurities entering the stator assembly, and further reducing the impurities entering the actuator, so as to reduce the influence of the impurities on the working performance of the actuator and improve the reliability of the actuator operation.

[0008] In some embodiments, the sealing component includes an inner edge and an outer edge, the inner edge is connected to the central component, and the outer edge is connected to the top cover.

[0009] In some embodiments, the top cover is provided with a first mounting hole; one end of the central component is accommodated in the first mounting hole, and a gap is formed between the central component and the inner wall surface of the first mounting hole; the sealing component covers the first mounting hole to seal the gap.

[0010] In some embodiments, the sealing assembly is capable of expanding and contracting radially along the first mounting hole. Thus, if the central assembly and the top cover experience relative shaking, or if the stator assembly experiences displacement between the central assembly and the top cover due to long-term use, the sealing assembly can adapt to the relative change between the central assembly and the top cover by expanding and contracting, thereby ensuring a sealing effect of the sealing assembly.

[0011] In some embodiments, the sealing assembly is in the shape of an annular corrugated plate, and the corrugated portion of the sealing assembly extends along the circumference of the first mounting hole. In this way, when the central assembly and the top cover shake or deviate relative to each other, the sealing assembly can expand and contract along the radial direction of the first mounting hole to prevent damage to the sealing assembly.

[0012] In some embodiments, the sealing component is made of at least one of rubber, plastic, asbestos, and metal.

[0013] In some embodiments, the top cover includes a top plate and a side panel, and the first mounting hole is provided on the top plate; along the axial direction of the first mounting hole, the side panel is connected to one side of the top plate and surrounds the top plate.

[0014] In some embodiments, the center component includes a center piece and a mounting piece, wherein a portion of the center piece is accommodated in the first mounting hole; the center piece has a limiting portion, which is located on the side of the top plate facing the side panel; the mounting piece is installed on the inner side of the side panel, and a portion of the mounting piece is provided on the side surface of the limiting portion facing the top plate.

[0015] In some embodiments, the central assembly includes a connector, which is positioned within the first mounting hole and connected to the central assembly; the inner edge is connected to the connector, and the mounting member is positioned between the connector and the retaining portion. This allows the central assembly to be connected to the top cover by simply attaching the mounting member to the top cover, placing the mounting member over the retaining portion of the central assembly, and finally attaching the connector to the central assembly and pressing it against the mounting member. This simplifies the connection process and facilitates the connection of the central assembly to the top cover.

[0016] In some embodiments, the mounting member is provided with a second mounting hole, and the central member is disposed within the second mounting hole. The stator assembly further includes a first sealing structure disposed between the inner wall of the second mounting hole and the central member. The first sealing structure seals the gap between the inner wall of the second mounting hole and the central member, thereby preventing impurities from entering the stator assembly through the gap between the mounting member and the central member, further preventing the impurities from affecting the stator assembly and ensuring the reliability of the stator assembly.

[0017] In some embodiments, the first sealing structure includes a first sealing ring.

[0018] In some embodiments, the mounting member includes a bushing and a support ring. The bushing contacts the side panel, and the support ring is connected to the bushing. The second mounting hole is provided in the support ring, and the support ring is located between the connecting member and the limiting portion.

[0019] In some embodiments, a first sealing ring is disposed between the inner wall surface of the support ring and the central member for one week.

[0020] In some embodiments, a first annular clamping groove is provided on the inner wall surface of the support ring and / or the outer peripheral surface of the central member, and the first sealing ring is clamped in the first annular clamping groove.

[0021] In some embodiments, the stator assembly further includes an annular baffle. The annular baffle is disposed on a side of the mounting member away from the top plate and is connected to the side panel. The annular baffle defines a first through hole, and the central member passes through the first through hole. The annular baffle can support the side panel, thereby enhancing the structural strength of the side panel and further improving the structural strength of the top cover.

[0022] In some embodiments, a jack is provided on the central assembly. The stator assembly further includes a plug-in member and at least one second sealing structure. The plug-in member is used for external wiring, and a part of the plug-in member is received in the jack. At least one second sealing structure is disposed between the inner wall surface of the jack for one week and the plug-in member. The second sealing structure can seal the gap between the part of the plug-in member extending into the jack and the inner wall surface of the jack, so as to prevent external impurities from entering the jack and affecting the components in the jack, thereby further improving the reliability of the stator assembly.

[0023] In some embodiments, the second sealing structure includes a second sealing ring.

[0024] In some embodiments, the second sealing ring is disposed in the gap between the central assembly and the top cover.

[0025] In some embodiments, a jack is provided on the central assembly. The stator assembly further includes a cooling member and a third sealing structure. The cooling member is disposed in the jack. The third sealing structure is disposed between the inner wall surface of the jack for one week and the cooling member. The third sealing structure can seal the gap between the cooling member and the inner wall surface of the jack, so as to further prevent external impurities from entering the jack, thereby further improving the reliability of the stator assembly.

[0026] In some embodiments, the third sealing structure includes a third sealing ring.

[0027] In a second aspect of the present invention, an actuator is provided. The actuator includes a stator assembly and a rotor assembly. The rotor assembly is adapted to be connected to the wheel end and can move relative to the stator assembly.

[0028] In some embodiments, the actuator further includes a housing and a driving assembly, and a part of the central assembly of the stator assembly is received in the housing.

[0029] In some embodiments, the driving component is disposed between a partial central component within the housing and the housing, and is configured to drive the housing to move axially relative to the central component.

[0030] In some embodiments, the driving component includes an electromagnetic coil and a magnetic member. One of the electromagnetic coil and the magnetic member is connected to the inside of the housing and forms part of the mover assembly with the housing, and the other of the electromagnetic coil and the magnetic member is connected to the central component and forms part of the stator assembly with the central component.

[0031] In some embodiments, the actuator further includes a support member and a fourth sealing structure. The support member is located on the side of the top cover of the stator assembly close to the housing and is connected to the top cover; the support member is provided with a second through cylinder hole; the fourth sealing structure is disposed between the support member and the top cover, and the central component passes through the second through hole. The fourth seal can seal the gap between the support member and the top cover, thereby preventing external impurities from entering the actuator through the gap between the support member and the top cover, further reducing the influence of impurities on the actuator, and further improving the reliability of the actuator.

[0032] In some embodiments, the fourth sealing structure includes a fourth sealing ring.

[0033] In some embodiments, the actuator further includes a dust-proof sleeve. The dust-proof sleeve is sleeved on the outside of the housing, and one end of the dust-proof sleeve is connected to the support member, and the other end of the dust-proof sleeve is connected to the housing. The dust-proof sleeve can axially expand and contract along the housing. The dust-proof sleeve can prevent impurities from entering the gap between the inner wall surface of the connection hole and the central member, and can prevent impurities from entering the housing through the gap between the inner wall surface of the connection hole and the central member, thereby further reducing the influence of impurities on the actuator and further improving the reliability of the actuator.

[0034] In some embodiments, the actuator further includes a fork arm and a gasket. The fork arm is connected to one end of the housing away from the top cover of the stator assembly; the gasket is disposed between the fork arm and the housing. The gasket can seal the gap between the fork arm and the housing, thereby preventing external impurities from entering the housing through the gap between the fork arm and the housing, and further reducing the influence of impurities on the actuator, and further improving the reliability of the actuator.

[0035] In a third aspect of the present invention, a suspension device is provided. The suspension device includes an actuator and an elastic element, and the elastic element is connected to the actuator.

[0036] In a fourth aspect of the present invention, a vehicle is provided. The vehicle includes the above-mentioned suspension device.

[0037] It should be noted that for the technical effects brought about by the implementation manners of the second to fourth aspects, reference may be made to the technical effects brought about by the corresponding implementation manners in the first aspect, which will not be elaborated herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0039] Figure 1 Structural schematic diagram of a vehicle in an embodiment of the present application;

[0040] Figure 2 is Figure 1 One of the perspective views of the suspension device in the vehicle shown;

[0041] Figure 3 is Figure 1 Front view of the suspension device in the vehicle shown;

[0042] Figure 4 is Figure 3 Schematic cross-sectional structure diagram of A-A in;

[0043] Figure 5 is Figure 4 Enlarged schematic diagram of the structure at B in;

[0044] Figure 6 is Figure 4 Enlarged schematic diagram of the structure at C in;

[0045] Figure 7 is Figure 1 Another perspective view of the suspension device in the vehicle shown;

[0046] Figure 8 is Figure 6 Enlarged schematic diagram of the structure at D in;

[0047] Figure 9 is Figure 4 Enlarged schematic diagram of the structure at E in.

[0048] Reference numerals:

[0049] 1000, vehicle;

[0050] 1, vehicle body;

[0051] 2, wheel;

[0052] 3. Suspension device; 31. Actuator; 311. Central component; 311A. Central part; 311B. Iron core; 311C. Guide hole; 311D. Jack; 311E. Limiting part; 311F. Mounting part; 311G. Connecting part; 311M. Bushing; 311N. Support ring; 311K. First card slot; 311L. Second mounting hole; 312. Housing; 312A. First end plate; 312B. Second end plate; 312C. Peripheral wall plate; 312D. Connection hole; 312E. Support part; 312F. Second mounting pad; 313. Driving component; 313A. Electromagnetic coil; 313B. Magnetic part; 314. Guide rod;

[0053] 32. Connector; 321. Insertion part; 322. Connection part; 323. Water inlet pipe; 324. Water outlet pipe;

[0054] 33. Second sealing structure;

[0055] 34. Cooling part; 341. Cooling circulation flow path;

[0056] 35. Third sealing structure;

[0057] 36. Top cover; 361. Top plate; 362. Side wall plate; 363. Sealing plate; 364. First mounting hole; 365. Second card slot;

[0058] 37. Fork arm;

[0059] 38. Support part; 381. Contact plate; 381A. Groove; 382. Limiting plate; 383. First mounting pad;

[0060] 39. Elastic element;

[0061] 310. Annular baffle;

[0062] 320. Sealing assembly; 320A. Through hole; 320B. First contact protrusion; 320C. Fixed plate; 320D. Clamping protrusion; 320E. Second contact protrusion;

[0063] 330. Sealing gasket;

[0064] 340. Dust-proof sleeve;

[0065] 350. Fourth sealing structure;

[0066] 360. First sealing structure;

[0067] 4. Cable. Detailed implementation manner

[0068] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only a part rather than all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0069] The terms "first" and "second" are used for descriptive purposes only and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "a plurality of" means two or more.

[0070] In the description of this specification, specific features, structures, materials, or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0071] The present application provides a vehicle 1000. The vehicle 1000 can be a pure electric vehicle 1000, a hybrid electric vehicle 1000, a plug-in hybrid vehicle 1000, an extended-range electric vehicle 1000, a fuel vehicle, etc. The vehicle 1000 can also be a sedan, a freight car, a passenger car, a truck, a trailer, etc.

[0072] As Figure 1 shown, Figure 1 is a schematic structural diagram of the vehicle 1000 in the embodiments of the present application. The vehicle 1000 includes a vehicle body 1 and wheels 2. The vehicle body 1 is for passengers to ride in and carry items, and the wheels 2 are installed below the vehicle body 1 to carry the vehicle body 1 and can roll on the road surface to enable the vehicle 1000 to travel.

[0073] The vehicle 1000 further includes a suspension device 3. The suspension device 3 is provided between the vehicle body 1 and the wheels 2 for transmitting force and torque between the vehicle body 1 and the wheels 2, and buffering the impact force received by the vehicle body 1 during the driving of the vehicle 1000 to improve the riding or driving comfort.

[0074] Among them, the suspension device 3 can be a non-independent suspension device, an independent suspension device, or an active suspension device.

[0075] In some embodiments of the present application, the suspension device 3 is an active suspension device, and the stiffness and damping characteristics of the active suspension device can be dynamically and adaptively adjusted according to the driving conditions of the vehicle (such as the motion state of the vehicle and the road conditions, etc.) so that the suspension device 3 is always in the best shock-absorbing state. Specifically, as Figure 2 shown, Figure 2 is Figure 1One of the perspective views of the suspension device 3 in the vehicle 1000 shown. The suspension device 3 may include an actuator 31 and an elastic element 39 ( Figure 2 not shown in the figure). The actuator 31 includes a relatively movable stator assembly and a mover assembly. The stator assembly is adapted to be connected to the body end, and the mover assembly is adapted to be connected to the wheel end. That is, the stator assembly is connected to the body, and the mover assembly is connected to the wheel. By the relative movement of the stator assembly and the mover assembly, the distance between the body and the wheel can be adjusted to ensure the smoothness of the body when the vehicle is driving on rough roads, so as to improve the driving comfort of the vehicle.

[0076] The elastic element 39 is connected to the actuator. Specifically, the elastic element 39 is disposed between the mover assembly and the stator assembly. By the relative movement of the stator assembly and the mover assembly, the deformation amount of the elastic element 39 can be changed accordingly, so as to adjust the deformation amount of the elastic element 39, and then adjust the buffering performance of the elastic element 39, so that the buffering performance of the elastic element 39 matches the requirements of the vehicle 1000, improve the buffering effect on the vehicle 1000, and improve the experience effect of the passengers and drivers.

[0077] In some embodiments, the stator assembly includes a central assembly 311. The actuator 31 further includes a housing 312. A part of the central assembly 311 extends into the housing 312 and can slide relative to the housing 312 along the axial direction of the housing 312.

[0078] As Figure 3 and Figure 4 shown, Figure 3 is Figure 1 the front view of the suspension device 3 in the vehicle 1000 shown, Figure 4 is Figure 3 the schematic cross-sectional structure diagram of the A-A section in

[0079] The actuator 31 further includes a driving component 313. The driving component 313 is disposed between a part of the central assembly 311 in the housing 312 and the housing 312, and is used to drive the housing 312 to move axially relative to the central assembly 311.

[0080] In some examples, the driving component 313 may be a piezoelectric ceramic actuator.

[0080] In some other examples, as Figure 5 shown, Figure 5 is Figure 4Schematic enlarged view of the structure at position B in [Chinese text]. The driving component 313 includes an electromagnetic coil 313A and a magnetic member 313B. One of the electromagnetic coil 313A and the magnetic member 313B is connected within the housing 312, and the other of the electromagnetic coil 313A and the magnetic member 313B is connected to the central component 311. That is, if the electromagnetic coil 313A is connected to the housing 312, then the magnetic member 313B is connected to the central component 311. At this time, the electromagnetic coil 313A and the housing 312 form part of the mover assembly, and the magnetic member 313B and the central component 311 form part of the stator assembly. If the electromagnetic coil 313A is connected to the central component 311, then the magnetic member 313B is connected to the housing 312. At this time, the electromagnetic coil 313A and the central component 311 form part of the stator assembly, and the magnetic member 313B and the housing 312 form part of the mover assembly.

[0081] Here, take the case where the electromagnetic coil 313A is connected to the central component 311 and the magnetic member 313B is connected to the housing 312 as an example. Specifically, the central component 311 includes a central member 311A and an iron core 311B. The iron core 311B is annular, and the central member 311A passes through the iron core 311B and is fixedly connected to the iron core 311B. Coil grooves are provided on the outer peripheral wall of the iron core 311B, and the electromagnetic coil 313A is disposed in the coil grooves and wound around the iron core 311B along the circumferential direction of the iron core 311B.

[0082] The magnetic member 313B is fixed on the inner peripheral wall of the housing 312. In this way, after the electromagnetic coil 313A is energized, a magnetic field will be generated between the electromagnetic coil 313A and the magnetic member 313B, and the direction of the Lorentz force of this magnetic field is along the axial direction of the housing 312. Thus, an axial mutual force between the central component 311 and the housing 312 can be generated along the axial direction of the housing 312, thereby pushing the central component 311 and the housing 312 to move relative to each other along the axial direction of the housing 312. And the direction of the mutual force between the central component 311 and the housing 312 can be controlled by changing the direction of the current in the electromagnetic coil 313A.

[0083] Exemplarily, the magnetic member 313B can be a permanent magnet, an electromagnet, an energized coil, etc.

[0084] Exemplarily, the magnetic member 313B is of an annular structure. At this time, the central member 311A, the iron core 311B, and the electromagnetic coil 313A all pass through the magnetic member 313B.

[0085] Exemplarily, the central member 311A can be of a rod-shaped structure, a plate-shaped structure, or other irregular structures.

[0086] In some embodiments, the number of electromagnetic coils 313A is plural, and the plural electromagnetic coils 313A are arranged at intervals along the axial direction of the housing 312. The number of magnetic members 313B is also plural, and the plural magnetic members 313B are arranged at intervals along the axial direction of the housing 312.

[0087] It should be noted that, as a whole, the electromagnetic coil 313A and the iron core 311B have a gap between the outer peripheral surface of the whole and the inner peripheral surface of the magnetic member 313B. Among them, the gap between the outer peripheral surface of the whole and the inner peripheral surface of the magnetic member 313B can be greater than or equal to 0.5 mm and less than or equal to 1 mm.

[0088] In some embodiments, as Figure 4 shown, the housing 312 includes a first end plate 312A, a second end plate 312B, and a peripheral wall plate 312C. The first end plate 312A and the second end plate 312B are arranged at intervals, and the thickness directions of the first end plate 312A and the second end plate 312B are the same. The peripheral wall plate 312C is cylindrical and is arranged between the first end plate 312A and the second end plate 312B. The first end plate 312A, the second end plate 312B, and the peripheral wall plate 312C enclose the internal space of the housing 312.

[0089] The first end plate 312A is provided with a connection hole 312D, and a part of the central assembly 311 extends into the housing 312 through the connection hole 312D. In some examples, the central member 311A of the central assembly 311 is slidably connected to the connection hole 312D. In this way, when the central assembly 311 and the housing 312 move relative to each other, the connection hole 312D can limit the central assembly 311 and the housing 312 to prevent the central assembly 311 and the housing 312 from shaking or shifting.

[0090] In some embodiments, a guide hole 311C is provided in the part of the central assembly 311 located inside the housing 312. Specifically, a guide hole 311C is provided on the end face of the central member 311A close to the second end plate 312B. The actuator 31 further includes a guide rod 314. One end of the guide rod 314 extends into the guide hole 311C and is slidably connected to the guide hole 311C. The other end of the guide rod 314 is fixedly connected to the housing 312. Specifically, the guide rod 314 is located inside the housing 312 and is connected to the second end plate 312B. Among them, the guide rod 314, the housing 312, and the magnetic member 313B form a mover assembly.

[0091] In this way, when the central assembly 311 and the housing 312 move relative to each other, the guide rod 314 can slide in the guide hole 311C, thereby guiding the central assembly 311 and the housing 312 to make the relative movement between the central assembly 311 and the housing 312 more stable.

[0092] In some embodiments, to facilitate the wiring of the electromagnetic coil 313A, as Figure 6 shown, Figure 6 Figure Figure 4 is an enlarged schematic view of the structure at position C in

[0093] . The stator assembly further includes a plug-in connector 32. The plug-in connector 32 is used for external wiring of the cable 4. Specifically, the cable 4 connects the plug-in connector 32 to the power supply of the vehicle 1000, and the plug-in connector 32 is also connected to the electromagnetic coil 313A through a connecting wire (not shown in the figure), so as to supply power to the electromagnetic coil 313A through the cable 4, the plug-in connector 32 and the connecting wire.

[0094] Based on this, as Figure 6 shown, the central assembly 311 is provided with a jack. In some examples, the central member 311A is provided with a jack 311D. Specifically, the jack 311D is provided on the end face of the central member 311A away from the housing 312. A part of the plug-in connector 32 is received in the jack 311D. The connecting wire can extend into the jack 311D through the part of the plug-in connector 32 located in the jack 311D, and then pass through the jack 311D to be connected to the electromagnetic coil 313A. In this way, the connecting wire can be protected through the jack 311D to avoid damage to the connecting wire.

[0095] In some embodiments, to prevent external dust, water, oil and other impurities from entering the jack 311D through the gap between the plug-in connector 32 and the inner wall surface of the jack 311D, thereby corroding and damaging the connecting wire. As Figure 6 shown, the stator assembly further includes at least one second sealing structure 33. At least one second sealing structure 33 is provided around the inner wall surface of the jack 311D and the plug-in connector 32. That is to say, the part of the plug-in connector 32 extending into the jack 311D passes through the second sealing structure 33, and the second sealing structure 33 is respectively in contact with the part of the plug-in connector 32 extending into the jack 311D and the inner wall surface of the jack 311D, so as to seal the gap between the part of the plug-in connector 32 extending into the jack 311D and the inner wall surface of the jack 311D, to prevent external impurities from entering the jack 311D, thereby further protecting the connecting wire.

[0096] Among them, the number of the second sealing structure 33 can be one or multiple. When the number of the second sealing structures 33 is multiple, the multiple second sealing structures 33 are arranged at intervals along the axial direction of the housing 312. Arranging multiple second sealing structures 33 can perform multi-stage sealing on the gap between the part of the plug-in member 32 extending into the jack 311D and the inner wall surface of the jack 311D, thereby improving the sealing effect. Moreover, even if one of the second sealing structures 33 is damaged, the gap between the part of the plug-in member 32 extending into the jack 311D and the inner wall surface of the jack 311D can still be sealed.

[0097] In some examples, the second sealing structure includes a second sealing ring. The second sealing ring is arranged between the inner wall surface of the jack 311D for one week and the plug-in member 32. In some other examples, the second sealing structure can also be other structures that can surround the plug-in member 32 for one week, and no specific limitation is made here.

[0098] In some examples, the second sealing ring is arranged in the gap between the central component 311 and the top cover 36. In this way, the installation position of the second sealing ring is relatively close to the end of the central component 311 close to the top cover 36, which is convenient for the installation of the second sealing ring.

[0099] In some embodiments, the plug-in member 32 includes a plugging portion 321 and a connecting portion 322. The plugging portion 321 is connected to the cable 4. A part of the connecting portion 322 is located in the jack 311D, the plugging portion 321 is located outside the jack 311D and is connected to the connecting portion 322. The connecting portion 322 passes through the second sealing structure 33 and abuts against the inner peripheral wall surface of the second sealing structure 33, and the outer peripheral wall surface of the second sealing structure 33 abuts against the inner peripheral wall surface of the jack 311D. Specifically, the connecting portion 322 passes through the second sealing ring and abuts against the inner peripheral wall surface of the second sealing ring, and the outer peripheral wall surface of the second sealing ring abuts against the inner peripheral wall surface of the jack 311D.

[0100] In some examples, a second annular clamping groove can be arranged on the outer peripheral surface of the connecting portion 322 and / or the inner wall surface of the jack 311D, and the second sealing structure 33 is clamped in the second annular clamping groove. Specifically, the second sealing ring is clamped in the second annular clamping groove. In this way, the second sealing structure 33 can be limited by the second annular clamping groove to prevent the second sealing structure 33 from sliding, thereby improving the sealing effect of the second sealing structure 33. Among them, the connecting portion 322 can be in a cylindrical structure, a cuboid structure, an elliptical cylindrical structure, etc., as long as the inner peripheral wall surface of the second sealing structure 33 matches the shape of the connecting portion 322.

[0101] In some embodiments, such as Figure 6As shown, the stator assembly further includes a cooling member 34. The cooling member 34 is disposed within the jack 311D and is used to cool the actuator 31 to prevent the actuator 31 from overheating and malfunctioning. Among them, the cooling member 34 can be in a cylindrical structure, a cuboid structure, an elliptical cylinder structure, etc., and a cooling circulation flow path 341 is provided within the cooling member 34. By introducing a coolant into the cooling member 34 and making the coolant circulate within the cooling circulation flow path 341, the temperature of the actuator 31 is reduced.

[0102] On this basis, in order to seal the gap between the cooling member 34 and the inner wall surface of the jack 311D, as Figure 6 shown, the stator assembly further includes a third sealing structure 35. The third sealing structure 35 is disposed between the inner wall surface of the jack 311D around one week and the cooling member 34. That is to say, the cooling member 34 passes through the third sealing structure 35, and the third sealing structure 35 abuts against the inner wall surface of both the cooling member 34 and the jack 311D respectively, so as to seal the gap between the cooling member 34 and the inner wall surface of the jack 311D to prevent external impurities from entering the jack 311D and further protect the connecting wire.

[0103] In some examples, the third sealing structure includes a third sealing ring. The third sealing ring is disposed between the inner wall surface of the jack 311D around one week and the cooling member 34. In some other examples, the third sealing structure can also be other structures that can surround the cooling member 34 for one week, and specific limitations are not made here.

[0104] In some examples, a third annular clamping groove can be provided on the outer peripheral surface of the cooling member 34 and / or the inner wall surface of the jack 311D, and the third sealing structure 35 is clamped within the third annular clamping groove. Specifically, the third sealing ring is clamped within the third annular clamping groove. In this way, the third sealing structure 35 can be limited by the third annular clamping groove to prevent the third sealing structure 35 from sliding, thereby improving the sealing effect of the third sealing structure 35. Among them, the inner peripheral wall surface of the third sealing structure 35 matches the shape of the cooling member 34.

[0105] In some embodiments, in order to facilitate the introduction of the coolant into the cooling member 34, a water inlet flow path (not shown in the figure) and a water outlet flow path (not shown in the figure) can be provided within the connecting portion 322. As Figure 2 shown, the inlet of the water inlet flow path is externally connected to the coolant through a water inlet pipe 323, and the outlet of the water outlet flow path is connected to a return water container through a water outlet pipe 324.

[0106] The outlet of the water inlet channel is communicated with the inlet of the cooling circulation channel 341 in the cooling member 34, and the inlet of the water outlet channel is communicated with the outlet of the cooling circulation channel 341 in the cooling member 34. In this way, the coolant can enter the water inlet channel through the water inlet pipe 323, flow through the water inlet channel and then enter the cooling circulation channel 341. During the flow of the coolant in the cooling circulation channel 341, heat exchange can be carried out with the actuator 31, so as to cool down the actuator 31. After flowing out of the cooling circulation channel 341, the coolant enters the water outlet channel and then flows to the return water container through the water outlet pipe 324.

[0107] In some examples, the connecting portion 322 includes a cover plate and a connecting plate. The cover plate is connected to the plugging portion 321, and both the water inlet channel and the water outlet channel are arranged in the cover plate. The connecting plate has a cylindrical structure, and the connecting plate is connected to the side of the cover plate away from the plugging portion 321. One end of the cooling member 34 close to the plugging member 32 extends into the space surrounded by the connecting plate. The cooling member 34 can be in interference fit with the connecting plate or can be connected to the cover plate through bolts, screws, etc.

[0108] On this basis, a wire passing hole can be provided on the cover plate, and a wire passing channel can also be provided in the cooling member 34. The connecting wire is sequentially passed through the wire passing hole and the wire passing channel.

[0109] In some embodiments, as Figure 7 shown, Figure 7 is Figure 1 the second perspective view of the suspension device in the vehicle 1000 shown. The stator assembly further includes a top cover 36. The actuator 31 further includes a fork arm 37 and a support member 38.

[0110] The top cover 36 is relatively fixed to the central assembly 311. Specifically, as Figure 6 shown, the top cover 36 includes a top plate 361 and a side wall plate 362. The side wall plate 362 is connected to one side of the top plate 361 and surrounds the top plate 361. In this way, the side wall plate 362 and the top plate 361 enclose a receiving space.

[0111] In some examples, the top cover 36 further includes a sealing plate 363. The sealing plate 363 is annular and is connected to the outer peripheral surface of the side wall plate 362. Exemplarily, the sealing plate 363 is connected to the end of the side wall plate 362 away from the top plate 361.

[0112] The central member 311A has a limiting portion 311E. Specifically, the limiting portion 311E is located on the outer peripheral surface of the central member 311A. And the limiting portion 311E is located on the side of the top plate 361 facing the side wall plate 362.

[0113] Exemplarily, the limiting portion 311E can be a limiting step or a plurality of limiting protrusions arranged at intervals along the circumferential direction of the central member 311A.

[0114] The central component 311 further includes a mounting member 311F and a connecting member 311G. The mounting member 311F is mounted on the inner side of the side wall panel 362. The connecting member 311G is disposed on the side of the limiting portion 311E close to the top plate 361 and is spaced from the limiting portion 311E. The connecting member 311G is connected to the central member 311A, and the mounting member 311F is located between the connecting member 311G and the limiting portion 311E. The mounting member 311F is clamped by the connecting member 311G and the limiting portion 311E to realize the connection between the mounting member 311F and the central member 311A, thereby realizing the connection between the top cover 36 and the central component 311.

[0115] Through the above settings, when connecting the central component 311 and the top cover 36, only need to mount the mounting member 311F on the top cover 36, then place the mounting member 311F on the limiting portion 311E of the central member 311A, and finally connect the connecting member 311G to the central member 311A and press it on the mounting member 311F. In this way, compared with connection methods such as welding and fastener connection, the connection process is simpler, thus facilitating the connection between the central component 311 and the top cover 36.

[0116] In some examples, the connecting member 311G can be a limiting sleeve. The limiting sleeve can be sleeved outside the central member 311A and is in interference fit with the central member 311A. In other examples, the connecting member 311G can be a limiting nut. The limiting nut is threadedly connected to the central member 311A.

[0117] In some examples, the mounting member 311F can be a mounting boss provided on the inner peripheral surface of the side wall panel 362 of the top cover 36. In other examples, as Figure 6 shown, the mounting member 311F includes a bushing 311M and a support ring 311N. The bushing 311M contacts the side wall panel 362. Specifically, the bushing 311M can abut against the side wall panel 362. The bushing 311M can also be an integral structure with the side wall panel 362. The support ring 311N is connected to the bushing 311M. Specifically, the bushing 311M is also annular, and an annular clamping groove is formed on the inner peripheral surface of the bushing 311M, and the support ring 311N is clamped in the clamping groove. The central member 311A passes through the support ring 311N, and the support ring 311N is located between the connecting member 311G and the limiting portion 311E.

[0118] The bushing 311M can be made of flexible materials such as rubber and plastic, and the bushing 311M has a sealing performance. By connecting the bushing 311M to the side wall panel 362 and connecting the support ring 311N to the bushing 311M, the bushing 311M can seal between the side wall panel 362 and the support ring 311N, thereby preventing impurities from passing between the side wall panel 362 and the support ring 311N, and thus reducing the influence of impurities on the stator assembly and the actuator 31.

[0119] In addition, the bushing 311M also has a certain hardness to support the support ring 311N.

[0120] In some examples, as Figure 6 shown, the stator assembly further includes an annular baffle 310. The annular baffle 310 is disposed on a side of the mounting member 311F away from the top plate 361 and is connected to the side wall plate 362. The annular baffle 310 defines a first through hole, that is, the hole inside the annular baffle 310 is the first through hole. The central member 311A passes through the first through hole. By providing the annular baffle 310, the side wall plate 362 can be supported, thereby enhancing the structural strength of the side wall plate 362, and further improving the structural strength of the top cover 36. Among them, the baffle can contact the side of the mounting member 311F away from the top plate 361 to support the mounting member 311F.

[0121] Among them, the central member 311A, the iron core 311B, the electromagnetic coil 313A, the top cover 36, the bushing 311M, the support ring 311N, the annular baffle 310, the plug-in member 32, the sealing assembly 320, etc. constitute the stator assembly of the actuator 31. The top cover is used to connect to the vehicle body.

[0122] In some embodiments, in order to facilitate the connection between the plug-in member 32 and the central assembly 311, and to facilitate the connection wire to be disposed in the jack 311D of the central member 311A. As Figure 6 shown, a gap is formed between the central assembly 311 and the top cover 36. That is to say, the central assembly 311 can pass through the top cover 36, so as to facilitate the connection between the plug-in member 32 and the top cover 36. Specifically, the top cover 36 is provided with a first mounting hole 364. Exemplarily, the first mounting hole 364 is disposed on the top plate 361. One end of the central assembly 311 is received in the first mounting hole 364. A gap is formed between the central assembly 311 and the inner wall surface of the first mounting hole 364. Specifically, a part of the central member 311A is received in the first mounting hole 364. A gap is formed between the central member 311A and the inner wall surface of the first mounting hole 364. In this way, the blockage of the top cover 36 to the central assembly 311 can be avoided, so as to facilitate the connection between the plug-in member 32 and the central member 311A through the first mounting hole 364, and to facilitate the connection wire to extend into the jack 311D of the central member 311A through the first mounting hole 364.

[0123] At this time, external impurities are likely to enter the top cover 36 through the gap between the inner wall surface of the first mounting hole 364 and the central assembly 311, thereby affecting the connection structure inside the top cover 36, and further affecting the stability of the actuator 31 during operation.

[0124] Based on this, as Figure 6As shown, the stator assembly further includes a sealing assembly 320. The sealing assembly 320 is used to seal the gap. Specifically, the sealing assembly 320 covers the first mounting hole 364 to seal the gap between the central assembly 311 and the top cover 36.

[0125] In some examples, the sealing assembly 320 includes an inner edge and an outer edge. The inner edge is connected to the central assembly 311, and the outer edge is connected to the top cover 36. Specifically, a through hole 320A is provided on the sealing assembly 320, that is, the inner edge of the sealing assembly 320 is annular, thus enclosing the through hole 320A. The central assembly 311 is accommodated in the through hole 320A. In some examples, a connecting member 311G is provided in the first mounting hole 364, and the inner edge of the sealing assembly 320 is connected to the connecting member 311G.

[0126] By providing the sealing assembly 320, the sealing assembly 320 can seal the gap between the central assembly 311 and the inner wall surface of the first mounting hole 364 of the top cover 36, thereby preventing external impurities from entering the top cover 36 through the gap between the central assembly 311 and the first mounting hole 364 of the top cover 36, and thus avoiding the influence of impurities on the components in the top cover 36 such as the mounting member 311F, etc., to ensure the stability of the stator assembly and the actuator 31 during operation.

[0127] In some examples, to facilitate the connection between the sealing assembly 320 and the connecting member 311G, as Figure 8 shown, Figure 8 is Figure 6 a schematic enlarged view of the structure at D in, a first clamping groove 311K is provided on the connecting member 311G; specifically, the first clamping groove 311K is provided on the limit nut. The inner edge of the sealing assembly 320 is clamped in the first clamping groove 311K.

[0128] In some examples, the first clamping groove 311K is provided on the outer peripheral wall surface of the limit nut. A first abutting protrusion 320B is further provided at the inner edge of the sealing assembly 320. The first abutting protrusion 320B is located on one side of the sealing assembly 320 in the axial direction of the central rod and abuts against the outer peripheral wall surface of the limit nut. In this way, the first abutting protrusion 320B can limit the sealing assembly 320 to facilitate the connection between the sealing assembly 320 and the limit nut. And the first abutting protrusion 320B abuts against the outer peripheral wall surface of the limit nut, which can also enhance the sealing effect at the connection between the sealing assembly 320 and the limit nut.

[0129] In some examples, to facilitate the fixation of the sealing assembly 320 to the top cover 36. As Figure 8 shown, a second clamping groove 365 is provided on the top cover 36. The outer edge of the sealing assembly 320 is clamped in the second clamping groove 365.

[0130] In some examples, the second card slot 365 is provided on the inner peripheral wall surface of the top plate 361 of the top cover 36. At the outer edge of the sealing assembly 320, a fixing plate 320C, a clamping protrusion 320D, and a second abutting protrusion 320E are provided. The clamping protrusion 320D is connected to the side of the fixing plate 320C away from the limit nut and is clamped in the second card slot 365. The second abutting protrusion 320E is connected to the side of the fixing plate 320C away from the limit nut. The second abutting protrusion 320E is located on the side of the top cover 36 away from the housing 312 and abuts against the top cover 36. In this way, the clamping protrusion 320D can be clamped in the second card slot 365, and the wall plate where the side of the second card slot 365 away from the housing 312 is located is clamped between the clamping protrusion 320D and the second abutting protrusion 320E, so that the clamping effect between the sealing assembly 320 and the top cover 36 can be improved, and the sealing effect at the connection between the sealing assembly 320 and the top cover 36 can be improved.

[0131] In some examples, during the use of the actuator 31, the mounting member 311F, the connecting member 311G, and the central member 311A may shake, or after the actuator 31 is used for a long time, the mounting member 311F may have a small offset, which may cause the central member 311A to have a small offset. This will cause the central member 311A to exert a pulling force on the sealing assembly 320. In order to prevent the sealing assembly 320 from being damaged by the pulling force, the sealing assembly 320 can be telescoped along the radial direction of the first mounting hole 364.

[0132] Exemplarily, the sealing assembly 320 can be made of elastic materials such as rubber and latex. In this way, when the sealing assembly 320 is subjected to a pulling force, the sealing assembly 320 can undergo elastic deformation, thereby preventing the sealing assembly 320 from being damaged.

[0133] Exemplarily, the sealing assembly 320 is in the shape of an annular corrugated plate, and the corrugated portion of the sealing assembly extends along the circumferential direction of the first mounting hole. That is, the radial cross-section of the sealing assembly 320 is corrugated, where the radial cross-section passes through the axis of the sealing assembly 320.

[0134] At this time, the material of the sealing assembly 320 can include at least one of rubber, plastic, asbestos, and metal. For example, the sealing assembly 320 can be made of elastic materials such as rubber material and latex material, or can be made of materials such as plastic material and asbestos material, or can also be made of metal materials such as aluminum, iron, copper, aluminum alloy, and stainless steel. For example, a part of the sealing assembly 320 can be made of rubber material, and another part can be made of plastic material.

[0135] Since the sealing assembly 320 is in an annular corrugated shape, when the sealing assembly 320 is subjected to a pulling force, the sealing assembly 320 can be telescoped, thereby preventing the sealing assembly 320 from being damaged.

[0136] The fork arm 37 is connected to the housing 312. Specifically, the fork arm 37 is connected to one end of the housing 312 away from the top cover 36.

[0137] In some examples, the fork arm 37 and the housing 312 are connected by fasteners such as bolts and screws.

[0138] In some examples, a part of the insertion arm extends into the housing 312 to limit the insertion arm through the housing 312, so as to facilitate passing the fasteners through the fork arm 37 and the housing 312. At this time, the guide rod 314 can be connected to the fork arm 37 or to the housing 312.

[0139] In some examples, to prevent external impurities from entering the housing 312 through the gap between the fork arm 37 and the housing 312, thereby affecting the working performance of the drive assembly 313, as Figure 9 shown, Figure 9 For Figure 4 the enlarged schematic view of the structure at E in

[0140] Exemplarily, the gasket 330 is annular, and the gasket 330 is placed between the surface of the housing 3 near the fork arm 37 and the surface of the fork arm 37 near the housing 312. After the fork arm 37 and the housing 312 are connected by fasteners, the fork arm 37 and the housing 312 can press the gasket 330 tightly, so as to seal the gap between the fork arm 37 and the housing 312 through the gasket 330.

[0141] One of the top cover 36 and the fork arm 37 is connected to the vehicle body 1, and the other of the top cover 36 and the fork arm 37 is connected to the wheel 2. That is, if the top cover 36 is connected to the vehicle body 1, then the fork arm 37 is connected to the wheel 2; if the top cover 36 is connected to the wheel 2, then the fork arm 37 is connected to the vehicle body 1.

[0142] As Figure 4 shown, the outer peripheral wall surface of the housing 312 has a support portion 312E. Exemplarily, the support portion 312E can be a support step or a plurality of support bumps arranged at intervals along the circumferential direction of the housing 312.

[0143] The support member 38 is located on the side of the top cover 36 close to the housing 312 and is connected to the top cover 36. Specifically, the support member 38 can abut against the top cover 36 or be connected to the top cover 36 by means such as snap connection or screw connection. The elastic element 39 is disposed between the support member 38 and the support portion 312E. Specifically, the elastic element 39 abuts against the support member 38 and the support portion 312E respectively.

[0144] With the above arrangement, when the vehicle 1000 travels on a rough or curved road section, etc., the driving assembly 313 can drive the central assembly 311 and the housing 312 to move relative to each other, so that the support member 38 and the support portion 312E move relative to each other, and further adjust the deformation amount of the elastic element 39, so as to adjust the buffering performance of the elastic element 39, make the buffering performance of the elastic element 39 match the requirements of the vehicle 1000, improve the buffering effect on the vehicle 1000, and improve the experience effect of the passengers and drivers. [[ID=E4]]

[0145] In some examples, the support member 38 is provided with a second through hole. The axial direction of the second through hole is consistent with the axial direction of the actuator.

[0146] In some examples, the support member 38 is annular. The central assembly 311 is disposed through the support member 38.

[0147] In some examples, the support member 38 includes an annular abutting plate 381 and an annular limiting plate 382. The abutting plate 381 abuts between the elastic element 39 and the top cover 36. The limiting plate 382 is connected to the side of the abutting plate 381 away from the top cover 36 and is located on the side of the elastic element 39 close to the central assembly 311. When the elastic element 39 is installed, it can contact the outer peripheral surface of the limiting plate 382 to limit the elastic element 39 through the limiting plate 382, so as to prevent the elastic element 39 from shifting in the radial direction of the housing 312 and improve the stability of the elastic element 39.

[0148] In some examples, as Figure 3 shown, a plurality of grooves 381A are provided on the outer peripheral surface of the abutting plate 381. The plurality of grooves 381A are arranged at intervals along the circumferential direction of the abutting plate 381. By providing a plurality of grooves 381A on the outer peripheral surface of the abutting plate 381, the weight of the abutting plate 381 can be reduced, which is convenient for the lightweight design of the abutting plate 381.

[0149] In some examples, the elastic element ⒆ can be a cylindrical elastic element 39 made of elastic materials such as rubber material and latex material. At this time, the elastic element 39 can be sleeved on the outside of the housing 312. The elastic element 39 can also include a plurality of elastic columns made of elastic materials such as rubber material and latex material. At this time, the plurality of elastic columns are arranged at intervals along the circumferential direction of the housing 312.

[0150] In some other examples, the elastic element 39 can be a spring, and the spring is sleeved outside the housing 312.

[0151] When the elastic element 39 is a spring, the abutting plate 381 can be in a spiral structure, and the spiral direction of the abutting plate 381 is the same as that of the spring. In this way, after the spring abuts against the abutting plate 381, a complete turn of the spring close to the abutting plate 381 can be in full contact with the abutting plate 381, thereby increasing the contact area between the spring and the abutting plate 381 and improving the supporting effect of the support member 38 on the spring.

[0152] The supporting portion 312E can also be in a spiral structure, and the spiral direction of the supporting portion 312E is the same as that of the spring. In this way, after the spring abuts against the supporting portion 312E, a complete turn of the spring close to the supporting portion 312E can be in full contact with the supporting portion 312E, thereby increasing the contact area between the spring and the supporting portion 312E and improving the supporting effect of the supporting portion 312E on the spring.

[0153] In some examples, as Figure 6 shown, a first mounting pad 383 is further provided between the spring and the support member 38. The first mounting pad 383 can be made of flexible materials such as rubber and plastic to buffer between the spring and the support member 38, so as to avoid large wear between the spring and the support member 38 during the elastic deformation process of the spring. Among them, the first mounting pad 383 can also be in a spiral structure, and the spiral direction of the first mounting pad 383 is the same as that of the spring.

[0154] In some examples, as Figure 4 shown, a second mounting pad 312F is further provided between the spring and the supporting portion 312E. The second mounting pad 312F can be made of flexible materials such as rubber and plastic to buffer between the spring and the supporting portion 312E, so as to avoid large wear between the spring and the supporting portion 312E during the elastic deformation process of the spring. Among them, the second mounting pad 312F can also be in a spiral structure, and the spiral direction of the second mounting pad 312F is the same as that of the spring.

[0155] In some embodiments, since the central member 311A extends into the through-body from the connection hole 312D on the first end plate 312A of the housing 312, impurities such as dust, water, and oil in the outside may enter the gap between the inner wall surface of the connection hole 312D and the central member 311A, thereby affecting the stability of the relative sliding between the central member 311A and the housing 312. Moreover, the impurities may also enter the housing 312 through the gap between the inner wall surface of the connection hole 312D and the central member 311A, thereby affecting the working performance of the drive assembly 313 provided in the through-body.

[0156] To avoid the above situation, as Figure 3As shown, the actuator 31 further includes a dust-proof sleeve 340. As Figure 4 shown, the dust-proof sleeve 340 is sleeved outside the housing 312, and one end of the dust-proof sleeve 340 is connected to the support member 38, and the other end of the dust-proof sleeve 340 is connected to the housing 312. Through the dust-proof sleeve 340, impurities can be isolated outside the dust-proof sleeve 340, and the connection hole 312D of the first end plate 312A is located inside the dust-proof sleeve 340. Therefore, impurities can be prevented from entering the gap between the inner wall surface of the connection hole 312D and the central member 311A, and impurities can be prevented from entering the housing 312 through the gap between the inner wall surface of the connection hole 312D and the central member 311A. Furthermore, the relative sliding between the central member 311A and the housing 312 can be made smoother and more stable, and the working performance of the drive assembly 313 can be ensured.

[0157] During the operation of the actuator 31, the housing 312 slides relative to the central member 311A and the support member 38, thereby generating a tensile force or a squeezing force on the dust-proof sleeve 340. In order to prevent the dust-proof sleeve 340 from being damaged by the tensile force or the squeezing force, the dust-proof sleeve 340 can be made to axially expand and contract along the housing 312.

[0158] Exemplarily, the dust-proof sleeve 340 can be made of elastic materials such as rubber and latex. In this way, when the housing 312 slides relative to the central member 311A and the support member 38, the dust-proof sleeve 340 can undergo elastic deformation under force, thereby preventing the dust-proof sleeve 340 from being damaged.

[0159] Exemplarily, the dust-proof sleeve 340 has a corrugated structure. At this time, the dust-proof sleeve 340 can be made of elastic materials such as rubber and latex, or can be made of materials such as plastic and asbestos, or can also be made of metal materials such as aluminum, iron, copper, aluminum alloy, and stainless steel. Since the dust-proof sleeve 340 has a corrugated structure, when the housing 312 slides relative to the central member 311A and the support member 38, the dust-proof sleeve 340 can expand and contract accordingly, thereby preventing the dust-proof sleeve 340 from being damaged.

[0160] In some examples, a spring is sleeved outside the dust-proof sleeve 340.

[0161] In some examples, one end of the dust-proof sleeve 340 near the top cover 36 is sleeved outside the limiting plate 382 of the support member 38 and is fixed to the limiting plate 382 of the support member 38 by a clamp.

[0162] In some examples, the other end of the dust-proof sleeve 340 away from the top cover 36 is sleeved outside the housing 312 and is fixed to the housing 312 by a clamp.

[0163] In some embodiments, since the support member 38 abuts against the top cover 36 and one end of the dust-proof sleeve 340 close to the top cover 36 is connected to the support member 38, therefore, external impurities may also enter the dust-proof sleeve 340 through the gap between the support member 38 and the top cover 36, and then enter the gap between the inner wall surface of the connection hole 312D and the central member 311A, as well as into the housing 312.

[0164] To prevent dust from entering the dust-proof sleeve 340 through the gap between the support member 38 and the top cover 36, as Figure 6 shown, the actuator 31 further includes a fourth sealing structure 350. The fourth sealing structure 350 is disposed between the support member 38 and the top cover 36, and the central assembly 311 passes through the second through hole. Exemplarily, the axis of the fourth sealing structure 350 coincides with the axis of the second through hole.

[0165] In this way, the gap between the support member 38 and the top cover 36 can be sealed by the fourth sealing structure 350, so that external impurities can be prevented from entering the dust-proof sleeve 340 through the gap between the support member 38 and the top cover 36, and further, external impurities can be prevented from entering the gap between the inner wall surface of the connection hole 312D and the central member 311A, as well as into the housing 312.

[0166] In some examples, the fourth sealing structure includes a fourth sealing ring. The fourth sealing ring is disposed between the support member 38 and the top cover 36. In some other examples, the fourth sealing structure can also be other structures that can surround the central member 311A for one week, and no specific limitation is made here.

[0167] In some examples, a fourth annular slot can be provided on the surface of the top cover 36 close to the support member 38 and / or on the surface of the support member 38 close to the top cover 36, and the fourth sealing structure 350 is snap-fitted into the fourth annular slot. Specifically, the fourth sealing ring is snap-fitted into the fourth annular slot. In this way, the fourth sealing structure 350 can be limited by the fourth annular slot to prevent the fourth sealing structure 350 from sliding, thereby improving the sealing effect of the fourth sealing structure 350.

[0168] Specifically, the fourth sealing structure 350 is disposed between the abutting plate 381 of the support member 38 and the sealing plate 363 of the top cover 36. Correspondingly, the fourth annular slot is provided on the surface of the abutting plate 381 close to the sealing plate 363 and / or on the surface of the sealing plate 363 close to the abutting plate 381.

[0169] In some embodiments, external impurities may also enter the inner side of the dust-proof sleeve 340 through the gaps between the connecting member 311G and the central member 311A, and between the mounting member 311F and the central member 311A, and then enter the housing 312 through the gap between the central member 311A and the inner wall surface of the connection hole 312D, affecting the working performance of the driving assembly 313.

[0170] Based on this, as Figure 6 shown, the mounting member 311F is provided with a second mounting hole 311L, and the central member 311A passes through the second mounting hole 311L. That is to say, the mounting member 311F is annular, and the space surrounded by the mounting member 311F forms the second mounting hole 311L. Specifically, the inner circumferential surface of the support ring 311N defines the second mounting hole 311L.

[0171] The stator assembly further includes a first sealing structure 360. The first sealing structure 360 is disposed between the inner wall surface of the second mounting hole 311L in a circle and the central member 311A. In this way, the gap between the inner wall surface of the second mounting hole 311L and the central member 311A can be sealed by the first sealing structure 360, thereby preventing impurities from entering the inner side of the dust-proof sleeve 340 through the gap between the mounting member 311F and the central member 311A, and further preventing impurities from entering the housing 312 through the gap between the central member 311A and the inner wall surface of the connection hole 312D, so as to ensure the working performance of the driving assembly 313.

[0172] In some examples, the first sealing structure includes a first sealing ring. The first sealing ring is disposed between the inner wall surface of the second mounting hole 311L in a circle and the central member 311A. In some other examples, the first sealing structure can also be other structures that can surround the central member 311A in a circle, which is not specifically limited herein.

[0173] In some examples, the first sealing structure is disposed between the inner wall surface of the support ring 311N in a circle and the central member 311A. Exemplarily, the first sealing ring is disposed between the inner wall surface of the support ring 311N in a circle and the central member 311A.

[0174] In some examples, a first annular card slot can be provided on the inner wall surface of the second mounting hole 311L and / or the outer peripheral surface of the central member 311A, and the first sealing structure 360 is snap-fitted into the first annular card slot. Specifically, the first sealing ring is snap-fitted into the first annular card slot. In this way, the first sealing structure 360 can be limited by the first annular card slot to prevent the first sealing structure 360 from sliding, thereby improving the sealing effect of the first sealing structure 360.

[0175] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A stator assembly, characterized in that, The stator assembly is adapted to be connected to the vehicle body end; The stator assembly includes a relatively fixed central assembly (311) and a top cover (36). A gap is formed between the central assembly (311) and the top cover (36). The stator assembly further includes a sealing assembly (320) for sealing the gap.

2. The stator assembly according to claim 1, wherein, The sealing assembly includes an inner edge and an outer edge. The inner edge is connected to the central assembly (311), and the outer edge is connected to the top cover (36).

3. The stator assembly according to claim 2, wherein The top cover (36) is provided with a first mounting hole (364). One end of the central assembly (311) is received in the first mounting hole (364), and a gap is formed between the central assembly (311) and the inner wall surface of the first mounting hole (364); The sealing assembly (320) covers the first mounting hole (364) to seal the gap.

4. The stator assembly according to claim 3, wherein, The sealing assembly (320) can expand and contract radially along the first mounting hole (364).

5. The stator assembly according to claim 4, characterized in that The sealing assembly (320) is in the shape of an annular corrugated plate, and the corrugated portion of the sealing assembly (320) extends circumferentially along the first mounting hole (364).

6. The stator assembly according to claim 1, characterized in that The material of the sealing assembly (320) includes at least one of rubber, plastic, asbestos, and metal.

7. The stator assembly according to claim 3, characterized in that, The top cover (36) includes a top plate (361) and a side wall (362). The first mounting hole (364) is provided in the top plate (361); along the axis of the first mounting hole (364), the side wall (362) is connected to one side of the top plate (361) and surrounds the top plate (361).

8. The stator assembly according to claim 7, wherein The central assembly (311) further includes: A central member (311A), a part of the central member (311A) is received in the first mounting hole (364); the central member (311A) has a limiting portion (311E), and the limiting portion (311E) is located on the side of the top plate (361) facing the side wall (362); A mounting member (311F), the mounting member (311F) is mounted on the inner side of the side wall (362), and a part of the mounting member (311F) is provided on the surface of the limiting portion (311E) facing the top plate (361).

9. The stator assembly according to claim 8, wherein, The central assembly (311) includes: A connecting member (311G), the connecting member (311G) is provided in the first mounting hole (364) and is connected to the central member (311A); the inner edge is connected to the connecting member (311G), and the mounting member (311F) is located between the connecting member (311G) and the limiting portion (311E).

10. The stator assembly according to claim 9, characterized in that, The mounting member (311F) is provided with a second mounting hole (311L), and the central member (311A) passes through the second mounting hole (311L); The stator assembly further includes a first sealing structure (360), and the first sealing structure (360) is provided between the inner wall surface of the second mounting hole (311L) in a circle and the central member (311A).

11. The stator assembly according to claim 10, wherein, The first sealing structure (360) includes a first sealing ring.

12. The stator assembly according to claim 11, characterized in that, The mounting member (311F) includes: a bushing (311M) that contacts the side wall panel (362); a support ring (311N) connected to the bushing (311M), with the second mounting hole (311L) provided in the support ring (311N), and the support ring (311N) located between the connecting member (311G) and the limiting portion (311E).

13. The stator assembly according to claim 12, characterized in that, The first sealing ring is provided between the inner wall surface of the support ring (311N) in a circumferential manner and the central member (311A).

14. The stator assembly according to claim 13, wherein, The inner wall surface of the support ring (311N) and / or the outer peripheral surface of the central member (311A) are provided with a first annular card slot, and the first sealing ring is snap-fitted into the first annular card slot.

15. The stator assembly according to claim 8, wherein, The stator assembly further includes an annular baffle (310) provided on a side of the mounting member (311F) away from the top plate (361) and connected to the side wall panel (362), and the annular baffle (310) encloses a first through hole through which the central member (311A) passes.

16. The stator assembly according to claim 1, wherein The central assembly (311) is provided with a jack (311D); The stator assembly further includes: a plug-in member (32) for external wiring cables (4), and a part of the plug-in member (32) is received in the jack (311D); at least one second sealing structure (33) provided between the inner wall surface of the jack (311D) in a circumferential manner and the plug-in member (32).

17. The stator assembly according to claim 16, wherein, The second sealing structure (33) includes a second sealing ring.

18. The stator assembly according to claim 17, wherein, The second sealing ring is provided in the gap between the central assembly (311) and the top cover (36).

19. The stator assembly according to claim 1, characterized in that, The central assembly (311) is provided with a jack (311D) The stator assembly further includes: a cooling member (34) provided in the jack (311D); a third sealing structure (35) provided between the inner wall surface of the jack (311D) in a circumferential manner and the cooling member (34).

20. The stator assembly according to claim 19, characterized in that, The third sealing structure (35) includes a third sealing ring.

21. An actuator, characterized in that, including: the stator assembly according to any one of claims 1-20; a rotor assembly adapted to be connected to the wheel end and capable of moving relative to the stator assembly.

22. The actuator according to claim 21, wherein The actuator includes: a housing (312) in which a part of the central assembly (311) of the stator assembly is received.

23. The actuator according to claim 22, wherein, The actuator further includes: a drive assembly (313) provided between a part of the central assembly (311) in the housing (312) and the housing (312) for driving the housing (312) to move axially relative to the central assembly (311).

24. The actuator according to claim 23, characterized in that, The driving component (313) includes an electromagnetic coil (313A) and a magnetic member (313B). One of the electromagnetic coil (313A) and the magnetic member (313B) is connected inside the housing (312) and forms part of the mover assembly with the housing (312). The other of the electromagnetic coil (313A) and the magnetic member (313B) is connected to the central component (311) and forms part of the stator assembly with the central component (311).

25. The actuator according to claim 23, characterized in that, The actuator further includes: A support member (38) located on the side of the top cover (36) of the stator assembly close to the housing (312) and connected to the top cover (36); the support member is provided with a second through hole; A fourth sealing structure (350) provided between the support member (38) and the top cover (36), and the central component (311) passes through the second through hole.

26. The actuator according to claim 25, characterized in that, The fourth sealing structure includes a fourth sealing ring.

27. The actuator according to claim 25, wherein, The actuator further includes a dust-proof sleeve (340) sleeved outside the housing (312), with one end of the dust-proof sleeve (340) connected to the support member (38) and the other end connected to the housing (312), and the dust-proof sleeve (340) can axially expand and contract along the housing (312).

28. The actuator according to claim 22, wherein The actuator further includes: A fork arm (37) connected to one end of the housing (312) away from the top cover (36) of the stator assembly; A gasket (330) provided between the fork arm (37) and the housing (312).

29. A suspension device, characterized in that, Includes: The actuator according to any one of claims 21-28; An elastic element (39) connected to the actuator.

30. A vehicle, characterized in that, Includes the suspension device according to claim 29.

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