Actuator, suspension assembly and vehicle

Abstract

The utility model discloses an actuator, a suspension assembly and a vehicle, and the actuator comprises a housing, one end of the housing is provided with a first lubricating cavity, and the other end of the housing is provided with a second lubricating cavity; one end of the center rod is arranged in the machine shell, the center rod is provided with a guide cavity, and the guide cavity communicates with the second lubricating cavity; the guide rod is fixed in the machine shell, and at least part of the guide rod extends into the guide cavity; wherein a first lubricating cavity is arranged between the center rod and the machine shell, a first bearing is arranged between the center rod and the machine shell, the first bearing is arranged in the first lubricating cavity, a second bearing is arranged between the guide rod and the center rod, and the second bearing is arranged in the guide cavity. According to the actuator provided by the embodiment of the utility model, the first bearing and the second bearing can be respectively lubricated, the structure is simple, and the lubricating effect is good.

Description

Technical Field

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

[0002] A bearing is a very important component in an actuator, mainly used to bear the weight or rotational force of the actuator, reduce the friction coefficient during the operation of the actuator, ensure the normal operation and long-term stable operation of the actuator. In order to reduce the wear and friction between the bearing and the shaft, it is necessary to lubricate and maintain the bearing, keep the bearing in a good lubrication state, and improve the bearing capacity and service life of the bearing.

[0003] However, due to the unreasonable lubrication structure of the bearing in the related art, the structure of the lubrication system is relatively complex, occupies a large space, and the lubrication effect on the bearing is not ideal. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide an actuator that can lubricate a first bearing and a second bearing respectively, with a simple structure and good lubrication effect.

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

[0006] The utility model also provides a vehicle having the above actuator or the above suspension assembly.

[0007] To achieve the above object, according to a first aspect embodiment of the utility model, an actuator is provided, including: a housing, one end of the housing is provided with a first lubrication cavity and the other end is provided with a second lubrication cavity; a central rod, one end of the central rod is arranged in the housing, and the central rod is provided with a guiding cavity, and the guiding cavity is communicated with the second lubrication cavity; a guiding rod, the guiding rod is fixed in the housing and at least a part of the guiding rod extends into the guiding cavity; wherein, a first bearing is arranged between the central rod and the housing, and the first bearing is arranged in the first lubrication cavity, and a second bearing is arranged between the guiding rod and the central rod, and the second bearing is arranged in the guiding cavity.

[0008] The actuator according to the embodiment of the utility model can lubricate the first bearing and the second bearing respectively, with a simple structure and good lubrication effect.

[0009] According to some embodiments of the utility model, the lubricant in the first lubrication cavity is grease; and / or, the lubricant in the second lubrication cavity is lubricating oil.

[0010] According to some embodiments of the present utility model, the actuator further includes: a first seal, the first seal is sleeved on the central rod and is disposed on one side of the first bearing; a second seal, the second seal is sleeved on the central rod and is disposed on the other side of the second bearing, and the first seal, the second seal, the central rod and the housing jointly define the first lubricating cavity.

[0011] According to some embodiments of the present utility model, an oil injection hole is further provided at one end of the housing, the oil injection hole is communicated with the second lubricating cavity, and the oil injection hole and the first lubricating cavity are arranged at a radial interval along the housing.

[0012] According to some embodiments of the present utility model, there are a plurality of the oil injection holes, and the plurality of oil injection holes are evenly spaced along the circumferential direction of the housing.

[0013] According to some embodiments of the present utility model, the actuator further includes: an oil sealing member, the oil sealing member is detachably installed on the oil injection hole to seal or open the oil injection hole.

[0014] According to some embodiments of the present utility model, the actuator further includes: an electromagnetic assembly, the electromagnetic assembly is disposed in the housing, and the electromagnetic assembly is connected to one of the housing and the central rod; a magnetic member, the magnetic member is disposed in the housing, and the magnetic member is connected to the other of the housing and the central rod; wherein, an oil passing gap is formed between the electromagnetic assembly and the magnetic member, and the oil passing gap is respectively communicated with the second lubricating cavity and the oil injection hole.

[0015] According to some embodiments of the present utility model, the housing is further configured with an oil inlet cavity, the oil inlet cavity is disposed between the oil passing gap and the oil injection hole, and the oil inlet cavity is respectively communicated with the oil passing gap and the oil injection hole.

[0016] According to some embodiments of the present utility model, along the radial direction of the housing, the width of the oil inlet cavity is not less than the inner diameter of the oil injection hole.

[0017] According to some embodiments of the present utility model, the actuator further includes: a first limiting member, the first limiting member is sleeved on the central rod, and the first limiting member is fixed on one side of the end of the electromagnetic assembly or the magnetic member facing the housing; a second limiting member, the second limiting member is sleeved on the central rod, and the second limiting member is fixed on one side of the end of the electromagnetic assembly or the magnetic member facing the other end of the housing.

[0018] According to some embodiments of the present utility model, the central rod includes: a rod body, and the guiding cavity is provided in the rod body; a protective sleeve, the protective sleeve is sleeved on the rod body and covers at least a part of the rod body, and the first bearing is sleeved on the protective sleeve.

[0019] According to the embodiments of the second aspect of the present utility model, a suspension assembly is provided, and the suspension assembly includes the actuator according to the embodiments of the first aspect of the present utility model.

[0020] For the suspension assembly according to the embodiments of the second aspect of the present utility model, by using the actuator according to the embodiments of the first aspect of the present utility model, the actuator can lubricate the first bearing and the second bearing respectively, with a simple structure and good lubrication effect.

[0021] According to the embodiments of the third aspect of the present utility model, a vehicle is provided, and the vehicle includes the actuator according to the embodiments of the first aspect of the present utility model or the suspension assembly according to the embodiments of the second aspect of the present utility model.

[0022] For the vehicle according to the embodiments of the third aspect of the present utility model, by using the actuator according to the embodiments of the first aspect of the present utility model or the suspension assembly according to the embodiments of the second aspect of the present utility model, the actuator can lubricate the first bearing and the second bearing respectively, with a simple structure and good lubrication effect.

[0023] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0024] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0025] Figure 1 is a schematic structural view of an actuator according to an embodiment of the present utility model;

[0026] Figure 2 is a cross-sectional view of an actuator according to an embodiment of the present utility model;

[0027] Figure 3 is Figure 2 a detailed view of part A of

[0028] Figure 4 is a cross-sectional view of the actuator when it is contracted according to an embodiment of the present utility model;

[0029] Figure 5 is Figure 4 a detailed view of part B of

[0030] Reference Signs:

[0031] 1. Actuator;

[0032] 100. Housing; 110. First Lubrication Chamber; 120. Second Lubrication Chamber; 130. Oil Injection Hole; 131. Oil Sealing Member; 140. Oil Inlet Chamber;

[0033] 200. Central Rod; 210. Rod Body; 211. Guide Chamber; 220. Protection Sleeve; 230. First Limiting Member; 240. Second Limiting Member;

[0034] 300. Guide Rod;

[0035] 400. First Bearing; 410. First Sealing Member; 420. Second Sealing Member;

[0036] 500. Second Bearing;

[0037] 600. Electromagnetic Assembly; 700. Magnetic Member; 710. Oil Passing Gap;

[0038] 800. Lower Fork Arm; 810. Bracket. Detailed Embodiment

[0039] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0040] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0041] In the description of the present utility model, the "first feature" and the "second feature" may include one or more of such features.

[0042] In the description of the present utility model, the meaning of "a plurality" is two or more, and the meaning of "several" is one or more.

[0043] The actuator 1 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0044] As Figures 1 - 5 shown, the actuator 1 according to an embodiment of the present invention includes a housing 100, a center rod 200, and a guide rod 300.

[0045] One end of the housing 100 is provided with a first lubrication cavity 110 and the other end is provided with a second lubrication cavity 120. One end of the center rod 200 is disposed inside the housing 100, and the center rod 200 is provided with a guide cavity 211 which communicates with the second lubrication cavity 120. The guide rod 300 is fixed inside the housing 100 and at least a part of the guide rod 300 extends into the guide cavity 211. Wherein, a first bearing 400 is provided between the center rod 200 and the housing 100, and the first bearing 400 is disposed inside the first lubrication cavity 110. A second bearing 500 is provided between the guide rod 300 and the center rod 200, and the second bearing 500 is disposed inside the guide cavity 211.

[0046] Wherein, a groove for fixing the second bearing 500 may be provided inside the guide cavity 211 to axially limit the second bearing 500.

[0047] Wherein, when the actuator 1 works, the center rod 200 expands and contracts relative to the housing 100. Since the guide rod 300 is fixed inside the housing 100, at this time, the center rod 200 will move relative to the housing 100 and the guide rod 300. The first bearing 400 can reduce the frictional resistance between the center rod 200 and the housing 100, and the second bearing 500 can reduce the frictional resistance between the center rod 200 and the guide rod 300.

[0048] In addition, by extending the guide rod 300 into the guide cavity 211, the guide rod 300 can cooperate with the guide cavity 211, and further can guide the relative movement of the guide rod 300 and the center rod 200, which is beneficial to simplifying the reciprocating movement of the guide rod 300 relative to the housing 100 and making the operation of the actuator 1 more stable and reliable.

[0049] According to the actuator 1 of the embodiment of the present utility model, one end of the housing 100 is provided with a first lubrication cavity 110 and the other end is provided with a second lubrication cavity 120. The first bearing 400 is arranged in the first lubrication cavity 110, the second bearing 500 is arranged in the guiding cavity 211, and the guiding cavity 211 is communicated with the second lubrication cavity 120. With such an arrangement, the lubricant in the first lubrication cavity 110 can lubricate the first bearing 400, and the lubricant in the second lubrication cavity 120 can enter the guiding cavity 211, and then the lubricant in the second lubrication cavity 120 can be used to lubricate the second bearing 500, so that a protective film can be formed on the surfaces of the first bearing 400 and the second bearing 500. Furthermore, the frictional resistance between the first bearing 400 and the central rod 200 and the housing 100 can be reduced, and the frictional resistance between the second bearing 500 and the central rod 200 and the guiding rod 300 can be reduced, which is beneficial to extending the service life of the first bearing 400 and the second bearing 500.

[0050] Moreover, the lubricant in the first lubrication cavity 110 lubricates the first bearing 400, and the lubricant in the second lubrication cavity 120 lubricates the second bearing 500. In this way, the lubrication of the first bearing 400 and the second bearing 500 can be relatively independent, so that the lubrication of the first bearing 400 and the second bearing 500 will not affect each other, ensuring that both the first bearing 400 and the second bearing 500 can be effectively lubricated, with better lubrication effect. Moreover, there is no need to additionally provide components such as an oil storage tank or a circulation pump, which is beneficial to simplifying the structure of the actuator 1. The structural arrangement for lubricating the first bearing 400 and the second bearing 500 can be simpler, and at the same time, the occupied space of the actuator 1 can be reduced, facilitating the layout.

[0051] In this way, the actuator 1 according to the embodiment of the present utility model can lubricate the first bearing 400 and the second bearing 500 respectively, with a simple structure and good lubrication effect.

[0052] In some specific embodiments of the present utility model, the lubricant in the first lubrication cavity 110 is grease; and / or, the lubricant in the second lubrication cavity 120 is lubricating oil.

[0053] For example, the lubricant in the first lubrication cavity 110 can be grease, and the lubricant in the second lubrication cavity 120 is lubricating oil.

[0054] It should be noted that in practical applications, the upper end of the housing 100 is the end provided with the first lubrication cavity 110, and the lower end of the housing 100 is the end provided with the second lubrication cavity 120. By setting the lubricant in the second lubrication cavity 120 as lubricating oil, the lubricating oil can flow to the bottom of the second lubrication cavity 120 under the action of gravity to be stored in the second lubrication cavity 120. When the actuator 1 works, the lubricating oil in the second lubrication cavity 120 will be squeezed into the guiding cavity 211, so that the lubricating oil can be effectively used to lubricate the second bearing 500.

[0055] Moreover, by setting the lubricant in the first lubrication cavity 110 as grease, the grease has excellent characteristics of high temperature resistance, oxidation resistance, corrosion resistance and abrasion resistance. When the actuator 1 works, the central rod 200 reciprocates relative to the housing 100. Under the repeated action of friction force and frictional heat, a durable protective film can be formed between the contact surface of the first bearing 400 and the central rod 200. This protective film can play a role in filling the tiny gaps on the contact surface, thereby reducing the direct contact between metals and isolating the entry of air and moisture, greatly extending the service life of the first bearing 400. In addition, the grease can be directly stored in the first lubrication cavity 110 during assembly, which is convenient to operate and the lubrication structure is simple.

[0056] In some specific embodiments of the present utility model, as Figure 3 shown, the actuator 1 further includes a first seal 410 and a second seal 420.

[0057] The first seal 410 is sleeved on the central rod 200 and is arranged on one side of the first bearing 400, and the second seal 420 is sleeved on the central rod 200 and is arranged on the other side of the second bearing 500. The first seal 410, the second seal 420, the central rod 200 and the housing 100 jointly define the first lubrication cavity 110.

[0058] Wherein, both the first seal 410 and the second seal 420 can be lip seals, and both the first seal 410 and the second seal 420 are in interference fit with the central rod 200.

[0059] With such a setting, the first seal 410 and the second seal 420 can respectively seal the axial two sides of the first bearing 400. When the actuator 1 operates, the gaps can be filled through the deformation of the first seal 410 and the second seal 420. The first seal 410 can isolate the first lubrication cavity 110 from the inside of the housing 100, thereby avoiding the grease flowing into the inside of the actuator 1. The second seal 420 can isolate the first lubrication cavity 110 from the outside of the housing 100, avoiding the grease from being externally contaminated. For example, it can prevent air and moisture from entering the first lubrication cavity 110, thus extending the service life of the first bearing 400.

[0060] In some specific embodiments of the present utility model, as Figure 3 shown, an oil injection hole 130 is further provided at one end of the casing 100. The oil injection hole 130 communicates with the second lubrication cavity 120, and the oil injection hole 130 and the first lubrication cavity 110 are arranged at intervals along the radial direction of the casing 100.

[0061] Among them, in practical applications, the end of the casing 100 provided with the first lubrication cavity 110 is the upper end, and the end of the casing 100 provided with the second lubrication cavity 120 is the lower end, that is, the oil injection hole 130 is provided at the upper end of the casing 100. In this way, when lubricating oil is filled into the second lubrication cavity 120 through the oil injection hole 130, the lubricating oil can flow into the second lubrication cavity 120 from top to bottom, the filling of the lubricating oil is more convenient, and after the filling is completed, the lubricating oil is not easy to flow out from the oil injection hole 130.

[0062] In addition, by arranging the oil injection hole 130 and the first lubrication cavity 110 at intervals in the radial direction of the casing 100, interference between the oil injection hole 130 and the first lubrication cavity 110 can be avoided, so as to completely isolate the first lubrication cavity 110 and the second lubrication cavity 120.

[0063] Furthermore, there are multiple oil injection holes 130, and the multiple oil injection holes 130 are evenly arranged at intervals along the circumferential direction of the casing 100.

[0064] It can be understood that the aperture of the oil injection hole 130 can be set to be small to reduce the influence of the oil injection hole 130 on the structural strength of the casing 100. By arranging multiple oil injection holes 130, lubricating oil can be filled into the second lubrication cavity 120 through the multiple oil injection holes 130 at the same time, and the oil filling efficiency is higher.

[0065] In some specific embodiments of the present utility model, as Figure 3 shown, the actuator 1 further includes an oil sealing member 131. The oil sealing member 131 is detachably installed on the oil injection hole 130 to seal or open the oil injection hole 130.

[0066] Among them, the oil sealing member 131 can be an oil seal nut. For example, internal threads can be provided in the oil injection hole 130, and the oil seal nut can be screwed and fixed to the oil injection hole 130, and a sealing member can be provided between the oil seal nut and the oil injection hole 130, which can improve the sealing effect of the oil sealing member 131 on the oil injection hole 130 while ensuring the reliable connection between the oil sealing member 131 and the casing 100.

[0067] In this way, when it is necessary to fill lubricating oil into the second lubrication cavity 120, the oil sealing member 131 can be removed to open the oil injection hole 130, and then lubricating oil can be filled into the second lubrication cavity 120. After the lubricating oil filling is completed, the oil sealing member 131 can be reinstalled into the oil injection hole 130 to seal the second lubrication cavity 120.

[0068] In some specific embodiments of the present utility model, such as Figure 2 and Figure 4 shown, the actuator 1 further includes an electromagnetic assembly 600 and a magnetic member 700.

[0069] The electromagnetic assembly 600 is disposed within the housing 100, and the electromagnetic assembly 600 is connected to one of the housing 100 and the central rod 200. The magnetic member 700 is disposed within the housing 100, and the magnetic member 700 is connected to the other of the housing 100 and the central rod 200. Wherein, an oil passing gap 710 is formed between the electromagnetic assembly 600 and the magnetic member 700, and the oil passing gap 710 is respectively communicated with the second lubricating cavity 120 and the oil injection hole 130.

[0070] For example, the electromagnetic assembly 600 can be connected to the central rod 200 and the magnetic member 700 can be connected to the housing 100, or the electromagnetic assembly 600 can be connected to the housing 100 and the magnetic member 700 can be connected to the central rod 200.

[0071] That is to say, when lubricating oil is filled into the second lubricating cavity 120, the lubricating oil can flow from the oil injection hole 130 through the oil passing gap 710 and finally flow into the second lubricating cavity 120.

[0072] Moreover, when the actuator 1 is working, a part of the lubricating oil in the second lubricating cavity 120 will be squeezed into the guiding cavity 211. Through the dual action of pressure and temperature, the unique ionic compound in the lubricating oil can be activated, adsorbing wear particles to fill the uneven friction contact surface, greatly reducing the frictional resistance between the guiding rod 300 and the second bearing 500. At the same time, another part of the lubricating oil in the second lubricating cavity 120 can be squeezed into the oil passing gap 710, so that the lubricating oil in the oil passing gap 710 can be used to cool the electromagnetic assembly 600 and the magnetic member 700, improving the heat dissipation performance of the actuator 1.

[0073] Wherein, it should be noted that the amount of lubricating oil flowing into the oil passing gap 710 can be adjusted by adjusting the addition amount of the lubricating oil.

[0074] In some specific embodiments of the present utility model, such as Figure 3 shown, the housing 100 is further configured with an oil inlet cavity 140. The oil inlet cavity 140 is disposed between the oil passing gap 710 and the oil injection hole 130, and the oil inlet cavity 140 is respectively communicated with the oil passing gap 710 and the oil injection hole 130. In this way, the oil inlet cavity 140 can ensure that the oil injection hole 130 can be communicated with the oil passing gap 710, and the electromagnetic assembly 600 and the magnetic member 700 are not arranged in the oil inlet cavity 140, so as to avoid the electromagnetic assembly 600 or the magnetic member 700 blocking the oil injection hole 130, ensuring that the second lubricating cavity 120 can be normally filled with lubricating oil.

[0075] Further, along the radial direction of the casing 100, the width of the oil inlet chamber 140 is not less than the inner diameter of the oil injection hole 130, so as to ensure a relatively large oil passing capacity of the oil inlet chamber 140, avoid blockage of the lubricating oil in the oil inlet chamber 140 during oil injection, make the oil injection smoother and the oil injection efficiency higher.

[0076] In some specific embodiments of the present invention, such as Figure 2 and Figure 4 shown, the actuator 1 further includes a first limiting member 230 and a second limiting member 240.

[0077] The first limiting member 230 is sleeved on the central rod 200, and the first limiting member 230 is fixed to one side of the end of the electromagnetic assembly 600 or the magnetic member 700 facing the casing 100. The second limiting member 240 is sleeved on the central rod 200, and the second limiting member 240 is fixed to one side of the end of the electromagnetic assembly 600 or the magnetic member 700 facing the other end of the casing 100.

[0078] Wherein, the first limiting member 230 can be a limiting pad, the second limiting member 240 can be a limiting nut, and the second limiting member 240 can be screwed and fixed to one end of the central rod 200 facing the second lubricating chamber 120.

[0079] In addition, it should be noted that the first limiting member 230 is fixed to one side of the end of the electromagnetic assembly 600 or the magnetic member 700 facing the casing 100, and the second limiting member 240 is fixed to one side of the end of the electromagnetic assembly 600 or the magnetic member 700 facing the other end of the casing 100, which means that if the electromagnetic assembly 600 is fixed to the central rod 200 and the magnetic member 700 is fixed to the casing 100, the first limiting member 230 is fixed to one side of the end of the electromagnetic assembly 600 facing the casing 100, and the second limiting member 240 is fixed to one side of the end of the magnetic member 700 facing the other end of the casing 100; if the magnetic member 700 is fixed to the central rod 200 and the electromagnetic assembly 600 is fixed to the casing 100, the first limiting member 230 is fixed to one side of the end of the magnetic member 700 facing the casing 100, and the second limiting member 240 is fixed to one side of the end of the electromagnetic assembly 600 facing the other end of the casing 100.

[0080] By providing the first limiting member 230 and the second limiting member 240, the first limiting member 230 and the second limiting member 240 can respectively limit the extreme positions of the relative movement of the central rod 200 and the casing 100. When the central rod 200 runs to the extreme position, the first limiting member 230 or the second limiting member 240 can prevent the electromagnetic assembly 600 or the magnetic member 700 from directly colliding with the casing 100, thereby protecting the electromagnetic assembly 600 and the magnetic member 700.

[0081] In some specific embodiments of the present invention, such asFigure 1 and Figure 3 As shown in Figure 3 , the central rod 200 includes a rod body 210 and a protective sleeve 220.

[0082] A guiding cavity 211 is provided in the rod body 210. The protective sleeve 220 is sleeved on the rod body 210 and covers at least a part of the rod body 210. The first bearing 400 is sleeved on the protective sleeve 220.

[0083] With such an arrangement, direct contact between the rod body 210 and the first bearing 400 can be avoided. That is, when the central rod 200 moves relative to the housing 100, the central rod 200 can be in direct contact and cooperation with the first bearing 400 through the protective sleeve 220, so that the first bearing 400 or other components can be prevented from damaging the magnetic strip required by the position sensor on the central rod 200, and the structural arrangement is more reasonable.

[0084] In some specific embodiments of the present utility model, as Figure 1 , Figure 2 and Figure 4 shown, the actuator 1 is further provided with a lower fork arm 800. The lower fork arm 800 can be fixedly connected to the lower end of the housing 100 by bolts and cover the housing 100, so that a closed space can be formed inside the housing 100. In addition, the guiding rod 300 can also be connected to the side of the lower fork arm 800 facing the inside of the housing 100 by bolts, or the guiding rod 300 can be integrally formed with the lower fork arm 800.

[0085] Moreover, a bracket 810 for fixing the actuator 1 can be provided at the lower end of the lower fork arm 800.

[0086] The following describes a suspension assembly according to an embodiment of the present utility model. The suspension assembly includes the actuator 1 according to the above embodiment of the present utility model.

[0087] For the suspension assembly according to an embodiment of the present utility model, by using the actuator 1 according to the above embodiment of the present utility model, the actuator 1 can lubricate the first bearing 400 and the second bearing 500 respectively, with a simple structure and good lubrication effect.

[0088] The following describes a vehicle according to an embodiment of the present utility model with reference to the accompanying drawings. The vehicle includes the actuator 1 according to the above embodiment of the present utility model or the suspension assembly according to the above embodiment of the present utility model.

[0089] For the vehicle according to an embodiment of the present utility model, by using the actuator 1 according to the above embodiment of the present utility model or the suspension assembly according to the above embodiment of the present utility model, the actuator 1 can lubricate the first bearing 400 and the second bearing 500 respectively, with a simple structure and good lubrication effect.

[0090] The actuator 1, the suspension assembly, and other components and operations of the vehicle according to the embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

[0091] In the description of this specification, the description with reference to terms such as "specific embodiments", "specific examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0092] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An actuator (1), characterized in that: include: A casing (100), wherein a first lubrication cavity (110) is provided at one end of the casing (100) and a second lubrication cavity (120) is provided at the other end; a center rod (200), one end of the center rod (200) being disposed in the housing (100), and the center rod (200) being provided with a guide cavity (211), the guide cavity (211) being in communication with the second lubrication cavity (120); A guide rod (300), wherein the guide rod (300) is fixed in the housing (100) and at least a portion of the guide rod (300) extends into the guide cavity (211); A first bearing (400) is provided between the center rod (200) and the housing (100), and the first bearing (400) is provided in the first lubrication cavity (110); a second bearing (500) is provided between the guide rod (300) and the center rod (200), and the second bearing (500) is provided in the guide cavity (211).

2. The actuator (1) according to claim 1, characterized in that: The lubricant in the first lubrication cavity (110) is grease; and / or The lubricant in the second lubrication cavity (120) is lubricating oil.

3. The actuator (1) according to claim 1, characterized in that: Also includes: A first sealing member (410), the first sealing member (410) being sleeved on the center rod (200) and disposed on one side of the first bearing (400); A second seal (420), wherein the second seal (420) is sleeved on the center rod (200) and is arranged on the other side of the second bearing (500), and the first seal (410), the second seal (420), the center rod (200) and the housing (100) jointly define the first lubrication chamber (110).

4. The actuator (1) according to claim 1, characterized in that An oil injection hole (130) is also provided at one end of the housing (100), the oil injection hole (130) is communicated with the second lubrication cavity (120), and the oil injection hole (130) and the first lubrication cavity (110) are spaced apart along the radial direction of the housing (100).

5. The actuator (1) according to claim 4, characterized in that There are a plurality of oil injection holes (130), and the plurality of oil injection holes (130) are evenly spaced and arranged along the circumference of the housing (100).

6. The actuator (1) according to claim 4, characterized in that Also includes: An oil sealing member (131) is detachably mounted on the oil injection hole (130) to seal or open the oil injection hole (130).

7. The actuator (1) according to claim 4, characterized in that Also includes: An electromagnetic component (600), the electromagnetic component (600) being disposed in the housing (100), and the electromagnetic component (600) being connected to one of the housing (100) and the center rod (200); a magnetic member (700), the magnetic member (700) being disposed in the housing (100), and the magnetic member (700) being connected to the other of the housing (100) and the center rod (200); An oil gap (710) is formed between the electromagnetic assembly (600) and the magnetic member (700), and the oil gap (710) is communicated with the second lubrication cavity (120) and the oil filling hole (130) respectively.

8. The actuator (1) according to claim 7, characterized in that The housing (100) is further configured with an oil inlet chamber (140), which is disposed between the oil gap (710) and the oil injection hole (130), and the oil inlet chamber (140) is communicated with the oil gap (710) and the oil injection hole (130) respectively.

9. The actuator (1) according to claim 8, characterized in that Along the radial direction of the housing (100), the width of the oil inlet cavity (140) is not less than the inner diameter of the oil injection hole (130).

10. The actuator (1) according to claim 7, characterized in that Also includes: A first limiting member (230), wherein the first limiting member (230) is sleeved on the central rod (200), and the first limiting member (230) is fixed to a side of the electromagnetic component (600) or the magnetic member (700) facing the one end of the housing (100); A second limiting member (240), wherein the second limiting member (240) is sleeved on the central rod (200), and the second limiting member (240) is fixed to a side of the electromagnetic component (600) or the magnetic member (700) facing the other end of the housing (100).

11. The actuator (1) according to claim 1, characterized in that The central rod (200) comprises: A rod body (210), wherein the guide cavity (211) is disposed on the rod body (210); A protective sleeve (220) is sleeved on the rod body (210) and covers at least a portion of the rod body (210); and the first bearing (400) is sleeved on the protective sleeve (220).

12. A suspension assembly, characterized in that: Comprising an actuator (1) according to any one of claims 1-11.

13. A vehicle, characterized in that: Comprising an actuator (1) according to any one of claims 1 to 11 or a suspension assembly according to claim 12.

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