Bearing, actuator, suspension assembly and vehicle

Abstract

The utility model provides a bearing, an actuator, a suspension assembly and a vehicle, and relates to the technical field of automobiles, the outer surface of the bearing is provided with a feed port, the feed port is communicated with the inner wall of the bearing, and a lubricating medium is suitable for entering the inner wall of the bearing through the feed port. The feeding port is used for adding lubricating media to the inner wall of the bearing from the outer surface of the bearing, and when the bearing is arranged on the center rod in a sleeving mode and slides relative to the center rod in the axis direction of the bearing, the lubricating media on the contact face of the bearing and the center rod are reduced in the relative sliding process. A lubricating medium can be timely added to the inner wall of the bearing from the outer surface of the bearing through the feeding hole, so that the contact surface can be ensured to have a better lubricating effect all the time, the friction force of the bearing and the center rod at the contact surface is weakened, and the loss of the bearing and the center rod caused by the friction force is further reduced; therefore, the service life of the bearing and the center rod can be prolonged.

Description

Technical Field

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

[0002] During the driving process of an automobile, different road conditions will be encountered. In order to ensure that the automobile chassis is not damaged, it is necessary to adjust the distance between the automobile chassis and the road surface according to different road conditions. In order to facilitate the adjustment of the distance between the automobile chassis and the road surface, it is generally achieved by the telescopic movement of the actuator in the up and down direction.

[0003] In the prior art, the width of the gas gap formed between the outer peripheral surface of the coil assembly of the actuator and the inner peripheral surface of the permanent magnet assembly is uneven along the axial direction of the central rod, resulting in an obvious magnetic attraction force between the coil assembly and the permanent magnet assembly. This magnetic attraction force is perpendicular to the axial direction of the central rod. Therefore, a large pressure will be generated between the central rod and the bearing of the housing under the action of this magnetic attraction force, which will further increase the friction force between the two bearings and the central rod, and thus increase the wear of the two bearings and the central rod. To solve this problem, a lubricating medium is usually filled between the two bearings and the central rod to reduce the above-mentioned friction force.

[0004] However, since relative movement needs to occur between the bearing and the central rod, a relatively static closed space cannot be formed, resulting in the gradual reduction of the above-mentioned lubricating medium during the relative movement of the bearing and the central rod and it is difficult to be replenished in time. Furthermore, the lubricating effect will be weakened, so the telescopic performance of the actuator will be weakened and the service life of the actuator will be reduced. Summary of the Utility Model

[0005] In view of this, the utility model provides a bearing, an actuator, a suspension assembly and a vehicle. When this bearing is adopted and sleeved on the central rod, the inner wall of the bearing can be replenished with a lubricating medium through the feed port of the bearing, so as to ensure that there is sufficient lubricating medium on the contact surface between the bearing and the central rod.

[0006] Furthermore, the lubricating effect between the bearing and the central rod can be ensured.

[0007] To achieve the above object, the technical solution of the utility model is realized as follows:

[0008] In a first aspect, the utility model discloses a bearing, wherein a feed port is arranged on the outer surface of the bearing, the feed port is communicated with the inner wall of the bearing, and a lubricating medium is adapted to enter the inner wall of the bearing through the feed port.

[0009] Optionally, an oil storage part is arranged on the inner wall of the bearing, and the feed port is communicated with the oil storage part.

[0010] Optionally, the oil storage part is a groove.

[0011] Optionally, the groove extends circumferentially along the bearing.

[0012] Optionally, the groove is a closed annular groove.

[0013] Optionally, there are multiple grooves, and the multiple grooves are arranged at intervals.

[0014] Optionally, the multiple grooves are arranged at equal intervals along the axial direction of the bearing.

[0015] Optionally, there are multiple feed ports, and the multiple feed ports are arranged along the axial direction of the bearing and correspond to the multiple grooves one by one.

[0016] Optionally, the bearing is a sliding bearing.

[0017] In a second aspect, the present utility model discloses an actuator, which includes a first component and a second component that can move relative to each other along the axial direction of the actuator. A bearing according to any one of the claims is arranged between the first component and the second component. The inner wall of the bearing is in sliding fit with the first component, and the outer wall of the bearing is fixedly connected to the second component.

[0018] Optionally, the first component includes a central rod, and the second component includes a housing; the housing is provided with a bearing installation portion; the bearing is embedded in the bearing installation portion, and the outer wall of the bearing abuts against the inner wall of the bearing installation portion; the central rod is inserted into the bearing, and the inner wall of the bearing is in sliding fit with the outer surface of the central rod.

[0019] Optionally, a through feed hole is provided on the side wall of the bearing installation portion, and the feed hole is communicated with the feed port.

[0020] Optionally, the housing is provided with a discharge port.

[0021] Optionally, along the axial direction of the housing, the discharge port and the feed hole are respectively arranged at both ends of the housing.

[0022] Optionally, the actuator further includes a sealing assembly, the sealing assembly is fixedly connected to the end face of the bearing installation portion, the sealing assembly is arranged around the circumference of the central rod, and abuts against the circumferential surface of the central rod.

[0023] Optionally, the sealing assembly includes a seal holder and a seal, the seal fits on the inner wall of the seal holder, and the seal fits around the central rod and abuts against the central rod.

[0024] Optionally, the actuator further includes a connecting member. The seal holder is provided with a first connection hole, and the housing is provided with a second connection hole. The connecting member passes through the first connection hole and the second connection hole to fixedly connect the seal holder to the housing.

[0025] Optionally, an annular limiting groove is provided on the inner wall of the seal holder, and the seal is located in the annular limiting groove.

[0026] Optionally, the central rod is provided with a limiting protrusion, and a clamping portion is provided at the position of the bearing mounting portion on the inner wall of the housing. The limiting protrusion abuts against or separates from the clamping portion.

[0027] Optionally, the limiting protrusion is a limiting plate, and the plate surface of the limiting plate is perpendicular to the axis of the central rod.

[0028] Optionally, a guiding member is provided on one side of the housing opposite to the bearing mounting portion, and a sliding member is provided between the central rod and the guiding member.

[0029] Optionally, a cavity is provided in the central rod along the direction of its own axis. The guiding member is a guiding rod, the guiding rod is inserted into the cavity, and the sliding member is clamped between the inner wall of the central rod and the outer wall of the guiding rod.

[0030] Optionally, the central rod extends into the interior of the housing;

[0031] The actuator further includes a permanent magnet assembly and a coil assembly. One of the permanent magnet assembly and the coil assembly is connected to the central rod, and the other component is connected to the housing.

[0032] In a third aspect, the present utility model discloses a suspension assembly, and the suspension assembly includes the actuator according to any one of the second aspects described above.

[0033] Optionally, the suspension assembly further includes a lubricating medium container and a circulating power device, and the circulating power device is connected to the lubricating medium container;

[0034] The lubricating medium container is provided with an output port and a return port. The output port is communicated with the feed hole,

[0035] The return port is communicated with the discharge port.

[0036] In a fourth aspect, the present utility model discloses a vehicle, and the vehicle includes the bearing according to any one of the first aspects described above or the actuator according to any one of the second aspects described above or the suspension assembly according to the third aspect described above.

[0037] Compared with the related art, the beneficial effects of the present application are at least as follows:

[0038] Since the feed port is used to add lubricating medium from the outer surface of the bearing to the inner wall of the bearing, when the bearing is sleeved on the center rod and slides relative to the center rod along its own axial direction, once the lubricating medium at the contact surface between the bearing and the center rod is reduced during the relative sliding process, the lubricating medium can be added from the outer surface of the bearing to the inner wall of the bearing through the feed port in a timely manner. In this way, the lubricating medium at the contact surface between the bearing and the center rod can always remain sufficient during the relative sliding process, and the contact surface can always have a good lubrication effect, thereby reducing the friction between the bearing and the center rod at the contact surface, thereby reducing the loss of the bearing and the center rod caused by friction, and thus extending the service life of the bearing and the center rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0040] Figure 1 It is a structural schematic diagram of a bearing provided by an embodiment of the utility model;

[0041] Figure 2 yes Figure 1 The cross-sectional view of the bearing in FIG. 1 is formed by cutting it through a plane passing through its own axis;

[0042] Figure 3 It is a structural schematic diagram of an actuator provided by an embodiment of the utility model;

[0043] Figure 4 yes Figure 3 A schematic diagram of the structure of the sealing assembly;

[0044] Figure 5 yes Figure 4 A cross-sectional view of the sealing component in FIG. 1 formed by cutting through a plane passing through its own axis;

[0045] Figure 6 yes Figure 3 Schematic diagram of the three-dimensional structure corresponding to the actuator in FIG.

[0046] Figure 7 yes Figure 6 A schematic diagram of the structure of the main housing in FIG.

[0047] Figure 8 yes Figure 6 A schematic diagram of the structure of the central rod in FIG.

[0048] Figure 9 It is a structural schematic diagram of a suspension assembly provided by an embodiment of the utility model.

[0049] Description of the reference numerals in the drawings:

[0050] 1 - Bearing, 12 - Oil storage part, 13 - Feed inlet

[0051] 2 - Central rod, 21 - Circumferential limiting protrusion, 22 - Axial limiting protrusion, 23 - Upper sliding section, 24 - Lower mounting section, 25 - Wire outlet hole, 26 - Limiting protrusion

[0052] 3 - Outer shell, 31 - Bearing mounting part, 32 - Feed hole, 33 - Discharge outlet, 35 - Main housing, 36 - Lower fork arm, 37 - Second connection hole, 38 - Positioning part, 39 - Guide

[0053] 4 - Sealing cavity

[0054] 5 - Lubricating medium container, 51 - Output port, 52 - Return port

[0055] 6 - Circulation power device

[0056] 7 - Sealing assembly, 71 - Seal holder, 711 - Annular limiting groove, 712 - First connection hole, 72 - Seal

[0057] 8 - Permanent magnet assembly

[0058] 9 - Coil assembly

[0059] 10 - Connector

[0060] 11 - Sliding part

[0061] 16 - First component

[0062] 17 - Second component

[0063] 100 - Actuator Detailed implementation manners

[0064] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0065] The terms "first", "second", etc. in the description and claims of the present utility model are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data used can be interchanged under appropriate circumstances, so that the embodiments of the present utility model can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition,

[0066] In the description and claims, "and / or" means at least one of the connected objects. The character " / ", generally represents an "or" relationship between the associated objects before and after.

[0067] It should be understood that the "some embodiments" mentioned throughout the description means that specific features, structures, or characteristics related to the embodiments are included in at least one embodiment of the present utility model. Therefore, the "in some embodiments" that appear throughout the description do not necessarily refer to the same embodiments. In addition, these specific features, structures, or characteristics can be combined in one or more embodiments in any suitable manner.

[0068] The following specifically introduces a bearing 1, an actuator 100, a suspension assembly, and a vehicle provided by the present utility model by listing specific embodiments.

[0069] Figure 1 is a schematic structural diagram of a bearing 1 provided by an embodiment of the present utility model, Figure 2 is Figure 1 the cross-sectional view formed after the bearing 1 in Figure 3 is a schematic structural diagram of an actuator 100 provided by an embodiment of the present utility model.

[0070] See Figure 1 、 Figure 2 and Figure 3 , an inlet 13 is provided on the outer surface of the bearing 1, and the inlet 13 communicates with the inner wall of the bearing 1, and the lubricating medium is adapted to enter the inner wall of the bearing 1 through the inlet 13.

[0071] In the embodiments of the present application, the feed inlet 13 is used to add a lubricating medium from the outer surface of the bearing 1 to the inner wall of the bearing 1. When the bearing 1 is sleeved on the central rod 2 and slides relative to the central rod 2 along its own axis direction, once the lubricating medium at the contact surface between the bearing 1 and the central rod 2 decreases during the relative sliding process, the lubricating medium can be timely added from the outer surface of the bearing 1 to the inner wall of the bearing 1 through the feed inlet 13. In this way, it can be ensured that the lubricating medium at the contact surface between the bearing 1 and the central rod 2 always remains sufficient during the relative sliding process, which can ensure that the contact surface always has a good lubricating effect, weaken the frictional force between the bearing 1 and the central rod 2 at the contact surface, and further reduce the loss caused by the frictional force between the bearing 1 and the central rod 2. Therefore, the service life of the bearing 1 and the central rod 2 can be extended.

[0072] It should be noted that the cross-section of the bearing 1 perpendicular to its own axis can be circular, rectangular or polygonal, or other shapes, and the embodiments of the present application do not limit this. The cross-sectional shape of the corresponding central rod 2 along its own axis is the same as its cross-sectional shape.

[0073] It should also be noted that the material of the bearing 1 can be metal or plastic, or other materials, and the embodiments of the present application do not limit this.

[0074] It should also be noted that the feed inlet 13 can be formed by directly opening a hole on the outer surface of the bearing 1. The shape of the feed inlet 13 can be circular, rectangular, or other shapes, and the embodiments of the present application

[0075] do not limit this. Further, in order to facilitate the addition of the lubricating medium, a feeding pipe can be provided outside the feed inlet 13.

[0076] It should also be noted that the lubricating medium can be semi-solid grease or liquid oil, or other types of lubricating media, and the embodiments of the present application do not limit this.

[0077] It should also be noted that the method of adding the lubricating medium to the feed inlet 13 can be manual addition or mechanical extrusion, or other addition methods, and the embodiments of the present application do not limit this.

[0078] Optionally, in some embodiments, referring to Figure 1 、 Figure 2 and Figure 3 , an oil storage part 12 is provided on the inner wall of the bearing 1, and the feed inlet 13 is communicated with the oil storage part 12.

[0079] In the embodiment of the present application, the oil storage part 12 can accommodate the lubricating medium injected into the inner wall of the bearing 1 through the feed port 13. In this way, the inner wall of the bearing 1 can store more lubricating medium, so that the lubricating medium at the contact surface between the bearing 1 and the central rod 2 is more sufficient during the relative sliding process, further improving the lubrication effect at the contact surface, reducing the friction force between the bearing 1 and the central rod 2 at the contact surface, and thus reducing the loss caused by the friction force between the bearing 1 and the central rod 2.

[0080] It should be noted that the above oil storage part 12 can be a strip-shaped oil storage part 12 or a dot-shaped oil storage part 12. When it is a dot-shaped oil storage part 12, it can be a circular oil storage part 12 or a rectangular oil storage part 12. The embodiment of the present application does not make any limitations in this regard.

[0081] Optionally, in some embodiments, see Figure 1 、 Figure 2 and Figure 3 , the oil storage part 12 is a groove.

[0082] In the embodiment of the present application, since the central rod 2 slides relative to the bearing 1 along its own axis direction and the oil storage part 12 is a groove, more lubricating medium can be stored on the inner wall of the bearing 1, which is beneficial for the outer surface of the central rod 2 to contact more lubricating medium during the sliding process. Furthermore, the lubrication effect at the contact surface can be further enhanced, the friction force between the bearing 1 and the central rod 2 at the contact surface can be weakened, and the loss caused by the friction force between the two can be reduced. Therefore, the service life of the bearing 1 and the central rod 2 can be further extended.

[0083] Optionally, in some embodiments, see Figure 1 、 Figure 2 and Figure 3 , the groove extends along the circumferential direction of the bearing 1.

[0084] In the embodiment of the present application, since the central rod 2 slides relative to the bearing 1 along its own axis direction and the groove extends along the circumferential direction of the bearing 1, the contact area between the outer surface of the central rod 2 and the lubricating medium can be increased, which is beneficial for the outer surface of the central rod 2 to contact more lubricating medium during the sliding process. Furthermore, the lubrication effect at the contact surface can be further enhanced, the friction

[0085] force between the bearing 1 and the central rod 2 at the contact surface can be weakened, and the loss caused by the friction force between the two can be reduced.

[0086] Optionally, in some embodiments, see Figure 1 、 Figure 2 and Figure 3 , the groove is a closed annular groove.

[0087] In the embodiment of the present application, since the groove is a closed annular groove, when the central rod 2 slides relative to the bearing 1 along the axial direction of its own axis, the entire outer peripheral surface of the central rod 2 around its own axis can contact the lubricating medium, so that the entire outer peripheral surface can be effectively lubricated, and thus the loss caused by friction at all parts of the entire outer peripheral surface of the central rod 2 can be reduced, so that the service life of the bearing 1 and the central rod 2 can be further extended.

[0088] It should be noted that the plane where the above-mentioned closed annular groove is located can be perpendicular to the axis of the bearing 1 or not perpendicular to the axis of the bearing 1, and the embodiment of the present application does not limit this.

[0089] Optionally, in some embodiments, see Figure 1 , Figure 2 and Figure 3 , the groove includes multiple ones, and the multiple grooves are arranged at intervals. In this way, when the central rod 2 slides relative to the bearing 1 along the axial direction of its own axis, the same position on the entire outer peripheral surface of the central rod 2 around its own axis can contact the lubricating medium multiple times during the relative sliding process, so that more lubricating medium can adhere to the outer peripheral surface of the central rod 2, and thus the lubrication effect at the contact surface between the two can be improved, and the loss caused by friction between the bearing 1 and the central rod 2 can be further reduced, so that the service life of the bearing 1 and the central rod 2 can be further extended.

[0090] It should be noted that the number of the above-mentioned grooves can be two, three, or other numbers, and the embodiment of the present application does not limit this. Generally speaking, the more the number of grooves, the better the lubrication effect at the contact surface.

[0091] Optionally, in some embodiments, see Figure 1 , Figure 2 and Figure 3 , the multiple grooves are arranged at equal intervals along the axial direction of the bearing 1. In this way, when the central rod 2 slides relative to the bearing 1 along the axial direction of its own axis, the positions where the outer peripheral surface of the central rod 2 contacts the lubricating medium are more evenly distributed, and thus the thickness of the lubricating oil film adhering to the outer peripheral surface of the central rod 2 is more uniform, which can improve the lubrication effect at the contact surface, so that the loss caused by friction between the bearing 1 and the central rod 2 can be further reduced, and the service life of the bearing 1 and the central rod 2 can be extended.

[0092] Optionally, in some embodiments, see Figure 1 , Figure 2 and Figure 3 , the feed port 13 includes multiple ones, and the multiple feed ports 13 are arranged along the axial direction of the bearing 1 and correspond to the multiple grooves one by one.

[0093] In this way, compared with the solution of only setting one feed port 13, through the multiple feed ports 13, lubricating medium is fed into the groove

[0094] The efficiency of adding the lubricating medium is higher, and the amount of the lubricating medium that can be added within the same time is more, so the efficiency of adding the lubricating medium is improved.

[0095] Next, since the multiple feed ports 13 correspond to the multiple grooves one by one, the lubricating medium can be added to the corresponding groove separately through each feed port 13, and thus the amount of the lubricating medium in each groove can be controlled more precisely, ensuring that the amount of the lubricating medium is evenly distributed along the axis direction of the bearing 1, so the lubricating effect can be improved. In addition, since the amount of the lubricating medium in each groove can be precisely controlled, the waste of the lubricating medium is avoided, so the lubricating medium can be saved. Next, since the multiple feed ports 13 are arranged at equal intervals along the axial direction of the bearing 1, they can exactly correspond to the multiple grooves distributed at equal intervals, and arranging the multiple feed ports 13 at equal intervals can make the outer shape of the bearing 1 more beautiful.

[0096] The embodiment of the present application also discloses an actuator 100. Refer to Figure 1 、 Figure 2 and Figure 3 , the actuator 100 includes a first component 16 and a second component 17 that can move relative to each other along the axial direction of the actuator 100. A bearing 1 is arranged between the first component 16 and the second component 17. The inner wall of the bearing 1 is slidably matched with the first component 16, and the outer wall of the bearing 1 is fixedly connected to the second component 17.

[0097] In the embodiment of the present application, since the inner wall of the bearing 1 is slidably matched with the first component 16 and the outer wall of the bearing 1 is fixedly connected to the second component 17. When the first component 16 slides relative to the second component 17, once the lubricating medium at the inner wall of the bearing 1 decreases during the relative sliding process, the lubricating medium can be added from the outer surface of the bearing 1 to the inner wall of the bearing 1 through the feed port 13 in time. In this way, it can be ensured that the lubricating medium at the contact surface between the bearing 1 and the first component 16 always remains sufficient during the relative sliding process, and a good lubricating effect can be ensured at this contact surface, reducing the friction force between the bearing 1 and the first component 16 at the contact surface, and further reducing the loss caused by the friction force between the bearing 1 and the first component 16. Therefore, the service life of the bearing 1 and the first component 16 can be prolonged, and thus the service life of the actuator 100 can also be prolonged.

[0098] Optionally, in some embodiments, refer to Figure 1 、 Figure 2 and Figure 3, the first component 16 includes a central rod 2, and the second component 17 includes a housing 3; the housing 3 is provided with a bearing mounting portion 31; the bearing 1 is embedded in the bearing mounting portion 31, and the outer wall of the bearing 1 abuts against the inner wall of the bearing mounting portion 31; the central rod 2 is inserted into the bearing 1, and the inner wall of the bearing 1 is in sliding fit with the outer surface of the central rod 2.

[0099] In the embodiment of the present application, since the central rod 2 is inserted into the bearing 1, the inner wall of the bearing 1 is in sliding fit with the outer surface of the central rod 2. In this way, when the bearing 1 slides relative to the central rod 2 along its own axis direction, once the lubricating medium at the contact surface between the bearing 1 and the central rod 2 decreases during the relative sliding process, the lubricating medium can be timely added from the outer wall of the bearing 1 to the oil storage portion 12 through the feed port 13. In this way, it can be ensured that the lubricating medium at the contact surface between the bearing 1 and the central rod 2 always remains sufficient during the relative sliding process, which can ensure that there is always a good lubricating effect at this contact surface, weaken the friction force between the bearing 1 and the central rod 2 at the contact surface, and further reduce the loss caused by the friction force between the two, and can extend the service life of the bearing 1 and the central rod 2, so the service life of the actuator 100 can be extended.

[0100] Next, since the housing 3 is provided with a bearing mounting portion 31. The bearing 1 is embedded in the bearing mounting portion 31, and the outer wall of the bearing 1 abuts against the inner wall of the bearing mounting portion 31, so that the bearing 1 can be more firmly connected to the housing 3.

[0101] Among them, the actuator 100 can realize the relative movement of the central rod 2 relative to the housing 3 through the relative movement of the central rod 2 relative to the bearing 1, and further enable the actuator 100 to extend or shorten. When the central rod 2 is connected to the vehicle frame and the housing 3 is connected to the vehicle axle, the distance between the vehicle frame and the vehicle axle can be adjusted by the telescopic movement of the actuator 100, and further the distance between the chassis of the vehicle frame and the road surface can be adjusted, so that the vehicle can better adapt to a variety of different road conditions, so the driving experience of users can be improved.

[0102] It should be noted that the material of the above housing 3 can be iron, copper or alloy, or other materials, and the embodiment of the present application does not limit this.

[0103] It should also be noted that the above feed hole 32 can be formed by directly opening a hole on the outer surface of the housing 3, and the shape of the feed hole 32 can be circular, rectangular, or other shapes, and the embodiment of the present application does not limit this.

[0104] Optionally, in some embodiments, see Figure 1 , Figure 2 and Figure 3 , a through feed hole 32 is provided on the side wall of the bearing mounting portion 31, and the feed hole 32 is communicated with the feed port 13.

[0105] In this way, lubricating medium can be added to the feed hole 32 and then transported to the oil storage part 12 to play a lubricating role, which makes the operation of adding lubricating medium more convenient, thus improving the efficiency of adding lubricating medium.

[0106] Optionally, in some embodiments, referring to Figure 1 、 Figure 2 and Figure 3 , the housing 3 is provided with a discharge port 33.

[0107] In the embodiments of the present application, after the central rod 2 is inserted into the bearing 1, a sealed cavity 4 is formed by enclosing the housing 3, the bearing 1 and the central rod 2, and there is a tiny gap at the contact surface between the central rod 2 and the bearing 1. When the discharge port 33 is provided on the housing 3, a flow channel can be formed for the lubricating medium. Specifically, after the lubricating medium is added into the feed hole 32, it will successively pass through the feed port 13, the oil storage part 12, the central rod 2

[0108] the gap at the contact surface with the bearing 1 and the sealed cavity 4, and finally exit the housing 3 through the discharge port 33. In this way, a continuous lubricating medium fluid can be formed in the above flow channel, so that the lubricating medium in the oil storage part 12 of the bearing 1 can be replenished in real time, thus further improving the lubrication effect between the bearing 1 and the central rod 2, and being able to extend the service life of the bearing 1 and the central rod 2, and thus being able to extend the service life of the actuator 100.

[0109] It should also be noted that the discharge port 33 can be formed by directly opening a hole on the outer surface of the housing 3. The shape of the feed hole 32 can be circular, rectangular, or other shapes, and the embodiments of the present application do not limit this.

[0110] Optionally, in some embodiments, referring to Figure 1 、 Figure 2 and Figure 3 , along the axial direction of the housing 3, the discharge port 33 and the feed hole 32 are respectively arranged at both ends of the housing 3.

[0111] When the actuator 100 is installed on a vehicle, the central rod 2 is connected to the vehicle frame, and the housing 3 is connected to the vehicle axle. At this time, the discharge port 33 is located below the feed hole 32. In this way, when the lubricating medium enters the oil storage part 12 through the feed hole 32, it can flow downward by its own gravity and finally flow out of the housing 3 through the discharge port 33.

[0112] Through the above setting method, without the action of other driving forces, the lubricating medium can flow in the flow channel by itself, so that the lubricating medium in the oil storage part 12 of the bearing 1 can be replenished in real time. Compared with the method of actively providing a driving force to make the lubricating medium flow, the energy consumption of the vehicle is reduced.

[0113] Optionally, in some embodiments, referring to Figure 3 、 Figure 4 and Figure 5 , the actuator 100 further includes a sealing assembly 7. The sealing assembly 7 is fixedly connected to the end face of the bearing mounting part 31. The sealing assembly 7 is arranged circumferentially around the central rod 2 and abuts against the circumferential surface of the central rod 2. In this way, the sealing assembly 7 can completely seal the gap between the central rod 2 and the bearing 1, preventing the lubricating medium from leaking from this gap to the outside of the housing 3, thereby reducing the loss of the lubricating medium. In addition, the sealing assembly 7 can further enhance the sealing performance of the housing 3, avoiding the phenomenon of pressure relief when the lubricating medium circulates, so as to ensure that the lubricating medium can circulate normally.

[0114] Optionally, in some embodiments, referring to Figure 3 、 Figure 4 and Figure 5 , the sealing assembly 7 includes a seal carrier 71 and a seal 72. The seal 72 is attached to the inner wall of the seal carrier, and the seal 72 is sleeved on the central rod 2 and abuts against the central rod 2.

[0115] Among them, the seal 72 is a flexible sealing ring. Since the seal 72 is attached to the inner wall of the seal carrier and is sleeved on the central rod 2 and abuts against the central rod 2. In this way, the flexible sealing ring is clamped between the inner wall of the seal carrier and the outer peripheral surface of the central rod 2, and the flexible sealing ring is in interference contact with the seal carrier. When the central rod 2 moves away from the housing 3 relative to the bearing 1, the lubricating medium attached to the surface of the central rod 2 will be intercepted by the flexible sealing ring, thereby preventing the lubricating medium from being carried out of the sealing cavity 4 by the central rod 2, so as to reduce the loss of the lubricating medium. In addition, the flexible sealing ring can further enhance the sealing performance of the housing 3, avoiding the phenomenon of pressure relief when the lubricating medium circulates, so as to further ensure that the lubricating medium can circulate normally.

[0116] It should be noted that the above flexible sealing ring can be a rubber ring, a silicone rubber ring, or a flexible sealing ring made of other materials. The embodiments of the present application do not limit this.

[0117] Optionally, in some embodiments, referring to Figure 3 、 Figure 4 、 Figure 5 and Figure 7The actuator 100 further includes a connecting member 10 , the sealing member retaining frame 71 is provided with a first connecting hole 712 , the housing 3 is provided with a second connecting hole 37 , the connecting member 10 is passed through the first connecting hole 712 and the second connecting hole 37 , and the sealing member retaining frame 71 is fixedly connected to the housing 3 .

[0118] In this way, the sealing member retaining frame 71 can be fixedly connected to the outer shell 3 through the first connecting hole 712, the second connecting hole 37 and the connecting member 10, and then the sealing assembly 7 can be fixedly connected to the outer shell 3, so that the sealing assembly 7 will not be separated from the outer shell 3 during the sliding process of the center rod 2, thereby enhancing the sealing performance of the outer shell 3.

[0119] It should be noted that the first connection hole 712 and the second connection hole 37 may be threaded holes, in which case the connection member 10 is a bolt. The first connection hole 712 and the second connection hole 37 may also not be threaded holes, in which case the connection member 10 is an anchor bolt.

[0120] Optionally, in some embodiments, see Figure 3 , Figure 4 and Figure 5 The inner wall of the seal holder 71 is provided with an annular limiting groove 711, and the seal 72 is located in the annular limiting groove 711. In this way, the annular limiting groove 711 can prevent the position of the flexible sealing ring relative to the bearing 1 from changing during the sliding process, and can also prevent the flexible sealing ring from slipping off the inner wall of the inner wall of the seal holder 71, thereby improving the reliability of the sealing assembly 7.

[0121] It should be noted that the flexible sealing ring can be directly placed in the annular limiting groove 711, or

[0122] The structure is bonded in the annular limiting groove 711, and this embodiment of the present application does not limit this.

[0123] Optionally, in some embodiments, see Figure 1 , Figure 3 and Figure 8 The center rod 2 is provided with a limiting protrusion 26 , and the inner wall of the housing 3 is provided with a locking portion 38 at the position of the bearing mounting portion 31 , and the limiting protrusion 26 abuts against or separates from the locking portion 38 .

[0124] In this way, when the center rod 2 slides outward to a certain position, the limiting protrusion 26 can abut against the locking portion 38. This position is the farthest position of the center rod 2 sliding outward, thereby limiting the center rod 2 when it slides outward, ensuring that the center rod 2 will not separate from the shell 3 during the sliding process.

[0125] Optionally, in some embodiments, see Figure 1 , Figure 3 and Figure 8, the limiting protrusion 26 is a limiting plate, and the plate surface of the limiting plate is perpendicular to the axis of the central rod 2.

[0126] Setting the limiting protrusion 26 as a limiting plate, compared with the solution of setting the limiting protrusion 26 as other shapes, when the limiting protrusion 26 abuts against the clamping portion 38, the contact area of the limiting protrusion 26 is larger, thereby enhancing the limiting effect of the clamping portion 38 on the limiting protrusion 26, so the limiting effect on the central rod 2 can be enhanced.

[0127] It should be noted that the above-mentioned limiting plate can be one piece or multiple pieces, and the embodiments of the present application do not limit this.

[0128] Optionally, in some embodiments, refer to Figure 1 , Figure 3 and Figure 8 , a guiding member 39 is provided on one side of the outer shell 3 opposite to the bearing mounting portion 31, and a sliding member 11 is provided between the central rod 2 and the guiding member 39. That is, the central rod 2 is slidably connected to the guiding member 39 through the sliding member 11. In this way, when the central rod 2 slides, the guiding member 39 can play a guiding role, so that the central rod 2 can slide along a specified direction.

[0129] In addition, setting the sliding member 11 between the central rod 2 and the guiding member 39, compared with the solution without setting the sliding member 11, can reduce the friction between the central rod 2 and the guiding member 39, thereby reducing the loss of the central rod 2 due to friction, so the service life of the central rod 2 can be extended.

[0130] Optionally, in some embodiments, refer to Figure 1 , Figure 3 and Figure 8 , a cavity is provided in the central rod 2 along the direction of its own axis, the guiding member 39 is a guiding rod, the guiding rod is inserted into the cavity, and the sliding member 11 is clamped between the inner wall of the central rod 2 and the outer wall of the guiding rod.

[0131] In this way, in addition to being able to guide the sliding of the central rod 2, the guiding rod can also prevent the central rod 2 from generating displacement in the direction perpendicular to its own axis, further restricting the sliding direction of the central rod 2.

[0132] It should be noted that the above-mentioned sliding member 11 can be a bearing for sliding or a slider with a smooth surface, and the embodiments of the present application do not limit this.

[0133] Optionally, in some embodiments, refer to Figure 3, the central rod 2 extends into the interior of the housing 3; the actuator 100 further includes a permanent magnet assembly 8 and a coil assembly 9, one of the permanent magnet assembly 8 and the coil assembly 9 is connected to the central rod 2, and the other component is connected to the housing 3. Thus, when the coil assembly 9 is energized, the coil will generate a coil magnetic field, and after the interaction between the coil magnetic field and the permanent magnet magnetic field, the coil can be driven to move relative to the permanent magnet, and further the central rod 2 can be driven to slide relative to the housing 3, so that the actuator 100 expands and contracts. Generally, the permanent magnet assembly 8 is connected to the housing 3, and the coil assembly 9 is connected to the central rod 2.

[0134] See Figure 3 , Figure 6 , Figure 7 and Figure 8 , a specific actuator 100 includes: a housing 3, a bearing 1 and a central rod 2. The housing 3 is provided with a bearing mounting portion 31. The bearing 1 is embedded in the bearing mounting portion 31, the outer wall of the bearing 1 abuts against the inner wall of the bearing mounting portion 31, and a through feed hole 32 is provided on the side wall of the bearing mounting portion 31, and the feed hole 32 communicates with the feed port 13. The central rod 2 is inserted into the bearing 1, and the inner wall of the bearing 1 abuts against the outer surface of the central rod 2. The central rod 2 extends into the interior of the housing 3, and the actuator 100 further includes a permanent magnet assembly 8 and a coil assembly 9. The permanent magnet assembly 8 is connected to the inner wall of the housing 3 and is arranged along the circumferential direction of the housing 3, and the coil assembly 9 is connected to the outer peripheral surface of the central rod 2.

[0135] In order to make the connection between the coil assembly 9 and the central rod 2 more firm and to prevent the coil assembly 9 from rotating around the central rod 2, a circumferential limiting protrusion 21 is provided at the connection between the central rod 2 and the coil assembly 9, and a circumferential limiting groove is provided at the corresponding connection of the coil assembly 9, and the circumferential limiting protrusion 21 can be received in the circumferential limiting groove. In order to prevent the coil assembly 9 from sliding along the axial direction of the central rod 2, an axial limiting protrusion 22 is provided at the end position of the central rod 2 where the coil assembly 9 is located, and the axial limiting protrusion 22 can apply pressure to one end of the coil assembly 9, thereby preventing the coil assembly 9 from sliding along the axial direction of the central rod 2. The section of the central rod 2 that can slide relative to the bearing 1 is the upper sliding section 23, and the section connected to the coil is the lower mounting section 24. The upper sliding section 23 and the lower mounting section 24 are separated by the axial limiting protrusion 22. Among them, the above-mentioned circumferential limiting protrusion 21 and axial limiting protrusion 22 are specific forms of the limiting protrusion 26.

[0136] In order to facilitate the lead-out of the wire of the coil from the housing 3, the central rod 2 is hollowed out along its own axis direction, and

[0137] An outlet hole 25 is provided on the central rod 2. The outlet hole 25 communicates the outer peripheral surface and the inner peripheral surface of the central rod 2, so that the wire can extend into the hollow part of the central rod 2 from the outlet hole 25, and then the wire is led out of the central rod 2 from the housing 3. In addition, threads are provided at both ends of the central rod 2.

[0138] In order to prevent the central rod 2 from deviating in the sliding direction when it slides into the housing 3, a guide rod is provided at a position of the housing 3 opposite to the bearing mounting portion 31. The guide rod extends into the hollow part of the central rod 2, so that the guide rod can play a guiding role when the central rod 2 slides. In order to reduce the friction between the guide rod and the inner wall of the central rod 2, a sliding member 11 is provided between the guide rod and the inner wall of the central rod 2. In order to facilitate the disassembly and assembly of the housing 3, the housing 3 includes a main housing 35 and a lower fork arm 36. The main housing 35 is cylindrical, and the lower fork arm 36 is threadedly connected to the main housing 35 on the opposite side of the bearing mounting portion 31. The guide rod is provided on the lower fork arm 36.

[0139] In order to make the connection between the sealing assembly 7 and the end face of the bearing mounting portion 31 more firm, a plurality of threaded holes are provided on the end face of the bearing mounting portion 31, and the sealing assembly 7 is threadedly connected to the threaded holes. A spring seat support is further provided on the outer peripheral surface of the main housing 35, and the spring support is used to connect the spring.

[0140] See Figure 3 、 Figure 6 、 Figure 7 and Figure 8 , the installation process of the actuator 100 is as follows:

[0141] First, the lower end of the main housing 35 and the upper end of the lower fork arm 36 are fixedly connected by threading to form the housing 3. Then, the central rod 2 is passed through the housing 3, and the upper end of the central rod 2 and the upper end of the housing 3 are coaxially installed through the bearing 1. Then, the lower end of the central rod 2 and the guide rod on the upper part of the lower fork arm 36 are coaxially installed, so that the housing 3 can reciprocate along the axial direction of the central rod 2. Then, the permanent magnet assembly 8 is fixedly installed on the inner peripheral surface of the main housing 3, and the coil assembly 9 is fixedly installed on the central rod 2 coaxially. After the coil assembly 9 and the permanent magnet assembly 8 are installed, it is necessary to ensure that there is a uniform gap of 0.5 mm to 1.0 mm in the radial direction between the outer peripheral surface of the coil assembly 9 and the inner peripheral surface of the permanent magnet assembly 8.

[0142] The embodiment of the present application also discloses a suspension assembly. See Figure 1 、 Figure 3 and Figure 9 , the suspension assembly includes any one of the above actuators 100.

[0143] When the bearing 1 is sleeved on the central rod 2 and slides relative to the central rod 2 along its own axis direction, once the lubricating medium at the contact surface between the bearing 1 and the central rod 2 decreases during the relative sliding process, the lubricating medium can be timely added from the outer wall of the bearing 1 to the oil storage part 12 through the feed port 13, so as to ensure that the lubricating medium at the contact surface between the bearing 1 and the central rod 2 always remains

[0144] in a sufficient state, which can ensure that there is always a good lubricating effect at this contact surface, weaken the friction force between the bearing 1 and the central rod 2 at the contact surface, and further reduce the loss caused by the friction force between the two. Therefore, the service life of the bearing 1 and the central rod 2 can be extended, that is, the service life of the suspension assembly is extended.

[0145] Optionally, in some embodiments, refer to Figure 1 、 Figure 3 and Figure 9 , the suspension assembly further includes a lubricating medium container 5 and a circulating power device 6, and the circulating power device 6 is connected to the lubricating medium container 5; the lubricating medium container 5 is provided with an output port 51 and a return port 52, the output port 51 is communicated with the feed hole 32, and the return port 52 is communicated with the discharge port 33.

[0146] In this way, the lubricating medium container 5, the above-mentioned flow channel and the circulating power device 6 form a complete circulating system, in which the above-mentioned circulating power device 6 can provide circulating power. Specifically, the lubricating medium in the lubricating medium container 5 enters the feed hole 32 through the output port 51 under the drive of the circulating power, then enters the feed port 13, then enters the gap at the contact surface between the central rod 2 and the bearing 1, then enters the sealing cavity 4, then enters the return port 52 through the discharge port 33, and finally returns to the lubricating medium container 5 through the return port 52.

[0147] Through this circulating system, the lubricating medium can be continuously provided to the oil storage part 12 of the bearing 1, and the lubricating medium flowing out from the discharge port 33 can be recycled back to the lubricating medium container 5, so that the lubricating medium is reused, reducing the loss of the lubricating medium. In addition, since the circulating power device 6 can provide a stable driving pressure, when the lubricating medium enters the oil storage part 12, it has a certain pressure, which can make the oil storage part 12 be filled with the lubricating medium more fully, so as to improve the lubricating effect between the central rod 2 and the bearing 1.

[0148] It should be noted that the above-mentioned circulating power device 6 can be a circulating pump or a pressure device, or other devices with the same function, and the embodiments of the present application do not limit this.

[0149] The embodiments of the present application also disclose a vehicle, which includes any one of the above-mentioned bearings 1 or any one of the above-mentioned actuators 100 or the above-mentioned suspension assembly.

[0150] When the above-mentioned bearing 1, the above-mentioned actuator 100 or the above-mentioned suspension assembly is installed on a vehicle, the bearing 1 is sleeved on the center rod 2 and can slide relative to the center rod 2 along its own axis direction. Once the lubricating medium at the contact surface between the bearing 1 and the center rod 2 decreases during the relative sliding process, the lubricating medium can be timely added from the outer wall of the bearing 1 to the oil storage part 12 through the feed port 13. In this way, it can be ensured that the lubricating medium at the contact surface between the bearing 1 and the center rod 2 always remains sufficient during the relative sliding process, which can ensure that there is always a good lubricating effect at this contact surface, weaken the friction force between the bearing 1 and the center rod 2 at the contact surface, and further reduce the loss caused by the friction force between the two. Therefore, the service life of the bearing 1 and the center rod 2 can be extended, that is, the service life of the vehicle is extended.

[0151] It should be noted that the above-mentioned vehicle can be a sedan, an off-road vehicle or a bus, or other types of vehicles, and the embodiments of the present application do not limit this.

[0152] Finally, it should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or terminal device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or terminal device including the said element.

[0153] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A bearing (1), characterized in that: The outer surface of the bearing (1) is provided with a feed port (13), the feed port (13) is connected to the inner wall of the bearing (1), and the lubricating medium is suitable for entering the inner wall of the bearing (1) through the feed port (13).

2. The bearing (1) according to claim 1, characterized in that The inner wall of the bearing (1) is provided with an oil storage portion (12), and the feed port (13) is connected to the oil storage portion (12).

3. The bearing (1) according to claim 2, characterized in that The oil storage portion (12) is a groove.

4. The bearing (1) according to claim 3, characterized in that The groove extends along the circumference of the bearing (1).

5. The bearing (1) according to claim 4, characterized in that The groove is a closed annular groove.

6. The bearing (1) according to claim 4, characterized in that The grooves include a plurality of grooves, and the plurality of grooves are arranged at intervals.

7. The bearing (1) according to claim 6, characterized in that The plurality of grooves are arranged at equal intervals along the axial direction of the bearing (1).

8. The bearing (1) according to claim 6, characterized in that The feed openings (13) include a plurality of feed openings (13), which are arranged along the axial direction of the bearing (1) and correspond one-to-one to the plurality of grooves.

9. The bearing (1) according to any one of claims 1 to 8, characterized in that: The bearing (1) is a sliding bearing.

10. An actuator (100), characterized in that: It comprises a first component (16) and a second component (17) which can move relative to each other along the axial direction of the actuator (100), a bearing (1) according to any one of claims 1 to 9 is arranged between the first component (16) and the second component (17), an inner wall of the bearing (1) is slidably matched with the first component (16), and an outer wall of the bearing (1) is fixedly connected to the second component (17).

11. The actuator (100) according to claim 10, characterized in that: The first component (16) comprises a center rod (2), and the second component (17) comprises a shell (3); the shell (3) is provided with a bearing mounting portion (31); the bearing (1) is embedded in the bearing mounting portion (31), and the outer wall of the bearing (1) abuts against the inner wall of the bearing mounting portion (31); the center rod (2) is inserted into the bearing (1), and the inner wall of the bearing (1) is slidably matched with the outer surface of the center rod (2).

12. The actuator (100) according to claim 11, characterized in that: A through feed hole (32) is provided on the side wall of the bearing mounting portion (31), and the feed hole (32) is connected to the feed port (13).

13. The actuator (100) according to claim 12, characterized in that: The housing (3) is provided with a discharge port (33).

14. The actuator (100) according to claim 13, characterized in that: Along the axial direction of the outer shell (3), the discharge port (33) and the feed hole (32) are respectively arranged at two ends of the outer shell (3).

15. The actuator (100) according to any one of claims 11 to 14, characterized in that: The actuator (100) further comprises a sealing assembly (7), wherein the sealing assembly (7) is fixedly connected to the end surface of the bearing mounting portion (31), and the sealing assembly (7) is arranged around the circumference of the center rod (2) and abuts against the circumferential surface of the center rod (2).

16. The actuator (100) according to claim 15, characterized in that: The sealing assembly (7) comprises a sealing member retaining frame (71) and a sealing member (72), wherein the sealing member (72) is fitted to the inner wall of the sealing member retaining frame, and the sealing member (72) is fitted and sleeved on the central rod (2) and abuts against the central rod (2).

17. The actuator (100) according to claim 16, characterized in that: The actuator (100) further comprises a connecting member (10), the sealing member retaining frame (71) is provided with a first connecting hole (712), the housing (3) is provided with a second connecting hole (37), and the connecting member (10) is passed through the first connecting hole (712) and the second connecting hole (37) to fix the sealing member retaining frame (71) and the housing (3).

18. The actuator (100) according to claim 16, characterized in that: An annular limiting groove (711) is provided on the inner wall of the sealing member retaining frame (71), and the sealing member (72) is located in the annular limiting groove (711).

19. The actuator (100) according to any one of claims 11 to 14, characterized in that: The center rod (2) is provided with a limiting protrusion (26), and the inner wall of the housing (3) is provided with a locking portion (38) at the position of the bearing mounting portion (31), and the limiting protrusion (26) is in contact with or separated from the locking portion (38).

20. The actuator (100) according to claim 19, characterized in that The limiting protrusion (26) is a limiting plate, and the plate surface of the limiting plate is perpendicular to the axis of the central rod (2).

21. The actuator (100) according to any one of claims 11 to 14, characterized in that: A guide member (39) is provided on the side of the housing (3) opposite to the bearing mounting portion (31), and a sliding member (11) is provided between the center rod (2) and the guide member (39).

22. The actuator (100) according to claim 21, characterized in that The center rod (2) is provided with a cavity along the direction of its own axis, the guide member (39) is a guide rod inserted into the cavity, and the sliding member (11) is clamped between the inner wall of the center rod (2) and the outer wall of the guide rod.

23. The actuator (100) according to any one of claims 11 to 14, characterized in that: The central rod (2) extends into the interior of the outer shell (3); The actuator (100) further comprises a permanent magnet assembly (8) and a coil assembly (9), wherein one of the permanent magnet assembly (8) and the coil assembly (9) is connected to the central rod (2), and the other is connected to the housing (3).

24. A suspension assembly, characterized in that: An actuator (100) comprising any one of claims 13-23.

25. The suspension assembly according to claim 24, characterized in that: The suspension assembly further comprises a lubricating medium container (5) and a circulating power device (6), wherein the circulating power device (6) is connected to the lubricating medium container (5); The lubricating medium container (5) is provided with an output port (51) and a return port (52); the output port (51) is communicated with the feed hole (32), and the return port (52) is communicated with the output port (33).

26. A vehicle, characterized in that: It comprises the bearing (1) described in any one of claims 1 to 9, the actuator (100) described in any one of claims 10 to 23, or the suspension assembly described in any one of claims 24 to 25.

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