Oil seal, active stabilizing device, active suspension system and vehicle

Abstract

The utility model discloses an oil seal, an active stabilizing device, an active suspension system and a vehicle. The oil seal provided by the embodiment of the utility model is applied to the active stabilizing device. The active stabilization device comprises a planet carrier and a shell. The oil seal comprises a first oil seal and a second oil seal, the first oil seal and the second oil seal are coaxially arranged, and the first oil seal is sleeved with the second oil seal. The inner side of the first oil seal is used for being in interference fit with a planet carrier, and the outer side of the second oil seal is used for being in interference fit with a shell. The second oil seal extends towards the first oil seal in the axial direction to form a first sealing lip, and the second oil seal extends towards the first oil seal in the radial direction to form a second sealing lip. The second oil seal is in interference fit with the first oil seal in the axial direction through the first sealing lip, and the second oil seal is in interference fit with the first oil seal in the radial direction through the second sealing lip. Therefore, double-layer water and dust prevention is achieved, the oil seal has better water and dust prevention capacity, the sealing performance is better, and the active stabilizing device can be effectively prevented from being damaged.

Description

Technical Field

[0001] The present application relates to the technical field of structural sealing, and particularly relates to an oil seal, an active stabilizer, an active suspension system, and a vehicle. Background Art

[0002] Oil seals are widely used in mechanical equipment, engines, hydraulic systems, the petroleum and chemical industries, and other fields. An oil seal can form a seal between a rotating shaft and a stationary component, isolate and enclose lubricating oil within a predetermined space, prevent oil leakage, and ensure the safe and stable operation of the equipment. However, current oil seals have problems with insufficient waterproof and dustproof capabilities. Summary of the Utility Model

[0003] Embodiments of the present application provide an oil seal, an active stabilizer, an active suspension system, and a vehicle to solve at least one of the above-mentioned technical problems.

[0004] The oil seal of the embodiments of the present application is applied to an active stabilizer. The active stabilizer includes a planet carrier and a housing. The oil seal includes a first oil seal and a second oil seal. The first oil seal and the second oil seal are coaxially arranged. The second oil seal is sleeved on the first oil seal. The inner side of the first oil seal is used for interference fit with the planet carrier, and the outer side of the second oil seal is used for interference fit with the housing.

[0005] The second oil seal extends axially towards the first oil seal to form a first sealing lip, and the second oil seal extends radially towards the first oil seal to form a second sealing lip. The second oil seal is in interference fit with the first oil seal axially through the first sealing lip, and the second oil seal is in interference fit with the first oil seal radially through the second sealing lip.

[0006] In some embodiments, both the first oil seal and the second oil seal are in an annular structure. The first sealing lip includes at least two first annular protrusions, and the at least two first annular protrusions are arranged at intervals in the radial direction.

[0007] The second sealing lip includes at least two second annular protrusions, and the at least two second annular protrusions are arranged at intervals in the axial direction.

[0008] In some embodiments, the first oil seal includes a first skeleton and a first sealing body. The first skeleton faces the second oil seal, and the first sealing body is attached to the side of the first skeleton facing away from the second oil seal.

[0009] The second oil seal includes a second skeleton and a second sealing body. The second sealing body covers the second skeleton, and both the first sealing lip and the second sealing lip are formed on the second sealing body.

[0010] The second seal body is in interference fit with the first skeleton axially through the first sealing lip, and the second seal body is in interference fit with the first skeleton radially through the second sealing lip.

[0011] In some embodiments, the first skeleton includes a first surface and a second surface facing the second oil seal, and an included angle is formed between the first surface and the second surface;

[0012] The second seal body is in interference fit with the first surface axially through the first sealing lip, and the second seal body is in interference fit with the second surface radially through the second sealing lip.

[0013] In some embodiments, the first seal body includes a third surface and a fourth surface facing away from the second oil seal, and an included angle is formed between the third surface and the fourth surface;

[0014] The fourth surface is used for interference fit with the planet carrier.

[0015] In some embodiments, the second seal body includes a first opening and a second opening that are communicated, and the first oil seal is inserted into the second opening from the first opening;

[0016] A first transition chamfer is provided at one end of the fourth surface close to the second opening.

[0017] In some embodiments, the second seal body includes a first opening and a second opening that are communicated, and the first oil seal is inserted into the second opening from the first opening;

[0018] The second seal body includes a fifth surface opposite to the second surface, and a second transition chamfer is provided at one end of the fifth surface close to the second opening.

[0019] In some embodiments, the second seal body includes a first opening and a second opening that are communicated, and the first oil seal is inserted into the second opening from the first opening;

[0020] One ends of the first oil seal and the second oil seal close to the second opening are flush and abutted axially.

[0021] In some embodiments, the first skeleton and / or the second skeleton are made of metal material.

[0022] In some embodiments, the first seal body and / or the second seal body are made of rubber material.

[0023] The active stabilization device according to the embodiment of the present application includes:

[0024] The oil seal according to any one of the above embodiments;

[0025] The planet carrier is used for interference fit with the inner side of the first oil seal;

[0026] The housing is used for interference fit with the outer side of the second oil seal.

[0027] In some embodiments, the first oil seal is relatively fixed to the planet carrier, and the second oil seal is relatively fixed to the housing;

[0028] When the planet carrier makes a circular motion around the central axis of the housing, the first oil seal makes a circular motion around the central axis of the housing along with the planet carrier.

[0029] The active suspension system according to the embodiment of the present application includes the active stabilizing device according to any of the above embodiments.

[0030] The vehicle according to the embodiment of the present application includes a vehicle body and the active suspension system according to any of the above embodiments, and the active suspension system is arranged on the vehicle body.

[0031] In the oil seal, the active stabilizing device, the active suspension system and the vehicle according to the embodiment of the present application, the second oil seal is in interference fit with the first oil seal axially through the first sealing lip, and the second oil seal is in interference fit with the first oil seal radially through the second sealing lip. In this way, double-layer waterproof and dustproof are realized, the oil seal has better waterproof and dustproof capabilities, the sealing performance is better, and the active stabilizing device can be effectively prevented from being damaged.

[0032] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the related art, the following will briefly introduce the drawings required for use in the description of the embodiments or the related art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts. Among them:

[0034] Figure 1 is a partial structural schematic diagram of the active stabilizing device according to some embodiments of the present application;

[0035] Figure 2 is a cross-sectional structural schematic diagram of the oil seal according to some embodiments of the present application;

[0036] Figure 3 is a partial structural schematic diagram of the cross-section of the oil seal according to some embodiments of the present application;

[0037] Figure 4It is a schematic exploded view of the cross-section of an oil seal according to some embodiments of the present application;

[0038] Figure 5 It is a schematic exploded view of an oil seal according to some embodiments of the present application;

[0039] Figure 6 It is a schematic exploded view of an oil seal according to some embodiments of the present application;

[0040] Figure 7 It is a top view schematic of an oil seal according to some embodiments of the present application;

[0041] Figure 8 It is a schematic diagram of a module of an active suspension system according to some embodiments of the present application;

[0042] Figure 9 It is a schematic diagram of the structure of a vehicle according to some embodiments of the present application.

[0043] Description of reference numerals:

[0044] Oil seal 10, first oil seal 11, first skeleton 111, first surface 1111, second surface 1112, first sealing body 112, third surface 1121, fourth surface 1122, first transition chamfer 113, second oil seal 12, first sealing lip 121, first annular protrusion 1211, second sealing lip 122, second annular protrusion 1221, second skeleton 123, second sealing body 124, fifth surface 1241, first opening 125, second opening 126, second transition chamfer 127, planet carrier 20, housing 30, active stabilizer 100, active suspension system 200, vehicle body 300, vehicle 1000. Detailed Description of the Embodiments

[0045] The following details the embodiments of the present application. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present application and should not be construed as limiting the present application.

[0046] Please refer to Figures 1 to 5, an embodiment of the present application provides an oil seal 10, which is applied to an active stabilizer 100. The active stabilizer 100 includes a planet carrier 20 and a housing 30. The oil seal 10 includes a first oil seal 11 and a second oil seal 12. The first oil seal 11 and the second oil seal 12 are coaxially arranged, and the second oil seal 12 is sleeved on the first oil seal 11. The inner side of the first oil seal 11 is used for interference fit with the planet carrier 20, and the outer side of the second oil seal 12 is used for interference fit with the housing 30. The second oil seal 12 extends axially towards the first oil seal 11 to form a first sealing lip 121, and the second oil seal 12 extends radially towards the first oil seal 11 to form a second sealing lip 122. The second oil seal 12 is in interference fit with the first oil seal 11 axially through the first sealing lip 121, and the second oil seal 12 is in interference fit with the first oil seal 11 radially through the second sealing lip 122.

[0047] In the oil seal 10 of the embodiment of the present application, the second oil seal 12 is in interference fit with the first oil seal 11 axially through the first sealing lip 121, and the second oil seal 12 is in interference fit with the first oil seal 11 radially through the second sealing lip 122. In this way, double-layer waterproof and dustproof are achieved, the oil seal 10 has better waterproof and dustproof capabilities, and the sealing performance is better, which can effectively prevent the active stabilizer 100 from being damaged.

[0048] Specifically, the active stabilizer 100 is used to reduce the roll of the vehicle 1000 during turning, so as to improve the handling performance and safety performance of the vehicle 1000. The active stabilizer 100 includes a planet carrier 20 and a housing 30. The planet carrier 20 and the oil seal 10 can be located inside the housing 30. The planet carrier 20 is used to convert the rotational motion of the motor into the linear movement of the active stabilizer 100.

[0049] The oil seal 10 includes a first oil seal 11 and a second oil seal 12. The first oil seal 11 and the second oil seal 12 are coaxially arranged, and the central axis is as shown by the axis O in Figure 2 . The second oil seal 12 is sleeved on the first oil seal 11. The inner side of the first oil seal 11 is in interference fit with the planet carrier 20. The first oil seal 11 can be press-fitted on the planet carrier 20 by a press, so that the first oil seal 11 can be fixed relative to the planet carrier 20. The outer side of the second oil seal 12 is in interference fit with the housing 30. The second oil seal 12 can be press-fitted on the housing 30 by a press, so that the second oil seal 12 can be fixed relative to the housing 30.

[0050] The second oil seal 12 extends axially toward the first oil seal 11 to form a first sealing lip 121. The extending direction can be parallel to the axial direction or have a certain inclination angle relative to the axial direction, which is not limited herein. The second oil seal 12 extends radially toward the first oil seal 11 to form a second sealing lip 122. Similarly, the extending direction can be parallel to the radial direction or have a certain inclination angle relative to the radial direction, which is not limited herein. When the first oil seal 11 and the second oil seal 12 are press-fitted together, the first sealing lip 121 abuts against the first oil seal 11. The second oil seal 12 is in interference fit with the first oil seal 11 axially through the first sealing lip 121, which can prevent liquid and large particles from entering the internal environment of the oil seal 10. The second sealing lip 122 abuts against the first oil seal 11. The second oil seal 12 is in interference fit with the first oil seal 11 radially through the second sealing lip 122, which can prevent liquid and small particles from entering the internal environment of the active stabilizer 100.

[0051] In the related art, the oil seal is only designed with a single waterproof and dustproof retaining ring, and the waterproof and dustproof ability is insufficient. Liquid or particles are likely to enter the active stabilizer, polluting the internal environment of the active stabilizer and causing damage to the active stabilizer. In the embodiments of the present application, the first sealing lip 121 and the second sealing lip 122 are respectively in interference fit with the first oil seal 11. In this way, double-layer waterproof and dustproof is achieved, the oil seal 10 has better waterproof and dustproof ability and better sealing performance, and can effectively prevent the active stabilizer 100 from being damaged.

[0052] Please refer to Figure 2 、 Figure 3 、 Figures 5 to 7 In some embodiments, both the first oil seal 11 and the second oil seal 12 are in a ring structure. The first sealing lip 121 includes at least two first annular protrusions 1211, and the at least two first annular protrusions 1211 are arranged at intervals in the radial direction. The second sealing lip 122 includes at least two second annular protrusions 1221. The at least two second annular protrusions 1221 are arranged at intervals in the axial direction.

[0053] Specifically, both the first oil seal 11 and the second oil seal 12 are in a ring structure. The first sealing lip 121 includes at least two first annular protrusions 1211. As Figure 2 shown, the first sealing lip 121 includes 2 first annular protrusions 1211. Of course, the number of the first annular protrusions 1211 can be 2, 3, 4 or more. The at least two first annular protrusions 1211 are arranged at intervals in the radial direction. The first annular protrusions 1211 extend axially toward the first oil seal 11, and the extending directions of the at least two first annular protrusions 1211 can be parallel or not parallel. When the first oil seal 11 and the second oil seal 12 are press-fitted together, the at least two first annular protrusions 1211 abut against the first oil seal 11, forming a first waterproof and dustproof retaining ring to prevent liquid and large particles from entering the internal environment of the oil seal 10.

[0054] The second sealing lip 122 includes at least two second annular protrusions 1221. As Figure 2 shown, the second sealing lip 122 includes two second annular protrusions 1221. Of course, the number of the second annular protrusions 1221 can be two, three, four or more, and at least two second annular protrusions 1221 are arranged at intervals along the axial direction. The second annular protrusions 1221 extend radially towards the first oil seal 11, and the extending directions of at least two second annular protrusions 1221 can be parallel or non-parallel. When the first oil seal 11 and the second oil seal 12 are press-fitted together, at least two second annular protrusions 1221 abut against the first oil seal 11 to form a second waterproof and dustproof retaining ring, blocking liquid and small particles from entering the internal environment of the active stabilization device 100.

[0055] Please refer to Figure 2 and Figure 3 , in some embodiments, the first oil seal 11 includes a first skeleton 111 and a first sealing body 112. The first skeleton 111 faces the second oil seal 12, and the first sealing body 112 is attached to the side of the first skeleton 111 facing away from the second oil seal 12. The second oil seal 12 includes a second skeleton 123 and a second sealing body 124. The second sealing body 124 covers the second skeleton 123, and both the first sealing lip 121 and the second sealing lip 122 are formed on the second sealing body 124. The second sealing body 124 is in interference fit with the first skeleton 111 along the axial direction through the first sealing lip 121, and the second sealing body 124 is in interference fit with the first skeleton 111 along the radial direction through the second sealing lip 122.

[0056] Specifically, the first oil seal 11 includes a first skeleton 111 and a first sealing body 112, and both the first skeleton 111 and the first sealing body 112 are in an annular structure. The first skeleton 111 faces the second oil seal 12, and the first sealing body 112 is attached to the side of the first skeleton 111 facing away from the second oil seal 12. The first skeleton 111 is used to support and fix the first sealing body 112 to prevent the first oil seal 11 from losing its sealing performance due to bending or damage.

[0057] The second oil seal 12 includes a second skeleton 123 and a second sealing body 124, and both the second skeleton 123 and the second sealing body 124 are in an annular structure. The second sealing body 124 covers the second skeleton 123. The second skeleton 123 is used to support and fix the second sealing body 124 to prevent the second oil seal 12 from losing its sealing performance due to bending or damage. Both the first sealing lip 121 and the second sealing lip 122 are formed on the second sealing body 124. The first sealing lip 121 is in interference fit with the first skeleton 111 along the axial direction, thereby realizing the axial fit between the second oil seal 12 and the first oil seal 11. The second sealing lip 122 is in interference fit with the first skeleton 111 along the radial direction, thereby realizing the radial fit between the second oil seal 12 and the first oil seal 11.

[0058] Please refer to Figure 4 , in some embodiments, the first skeleton 111 includes a first surface 1111 and a second surface 1112 facing the second oil seal 12, and an included angle is formed between the first surface 1111 and the second surface 1112. The second seal body 124 is in interference fit with the first surface 1111 axially through the first seal lip 121, and the second seal body 124 is in interference fit with the second surface 1112 radially through the second seal lip 122.

[0059] Among them, the first skeleton 111 includes a first surface 1111 and a second surface 1112 facing the second oil seal 12, and the first surface 1111 and the second surface 1112 are in an annular structure. An included angle is formed between the first surface 1111 and the second surface 1112, and the size of the included angle is not limited. For example Figure 4 as shown, the first surface 1111 is perpendicular to the axial direction of the oil seal 10, the second surface 1112 is parallel to the axial direction of the oil seal 10, and the included angle between the first surface 1111 and the second surface 1112 can be 90°.

[0060] When the first oil seal 11 and the second oil seal 12 are press-fitted together, the first seal lip 121 abuts against the first surface 1111, and the second seal body 124 is in interference fit with the first surface 1111 axially through the first seal lip 121, specifically, it can be in interference fit with the first surface 1111 along the extending direction of the first seal lip 121 towards the first oil seal 11. The second seal lip 122 abuts against the second surface 1112, and the second seal body 124 is in interference fit with the second surface 1112 radially through the second seal lip 122, specifically, it can be in interference fit with the second surface 1112 along the extending direction of the second seal lip 122 towards the first oil seal 11.

[0061] Please refer to Figure 4 , in some embodiments, the first seal body 112 includes a third surface 1121 and a fourth surface 1122 facing away from the second oil seal 12, and an included angle is formed between the third surface 1121 and the fourth surface 1122. The fourth surface 1122 is used for interference fit with the planet carrier 20.

[0062] Specifically, the first seal body 112 includes a third surface 1121 and a fourth surface 1122 facing away from the second oil seal 12, and the third surface 1121 and the fourth surface 1122 are in an annular structure. An included angle is formed between the third surface 1121 and the fourth surface 1122, and the size of the included angle is not limited. For example Figure 4 as shown, the third surface 1121 is perpendicular to the axial direction of the oil seal 10, the fourth surface 1122 is parallel to the axial direction of the oil seal 10, and the included angle between the third surface 1121 and the fourth surface 1122 can be 90°. The first oil seal 11 is in interference fit with the planet carrier 20 through the fourth surface 1122.

[0063] In one example, the first surface 1111 is parallel to the third surface 1121, and the second surface 1112 is parallel to the fourth surface 1122. Of course, the first surface 1111 and the third surface 1121 may not be parallel, and the second surface 1112 and the fourth surface 1122 may also not be parallel.

[0064] Please refer to Figures 2 to 4 , in some embodiments, the second seal 124 includes a first opening 125 and a second opening 126 that are in communication, and the first oil seal 11 is inserted into the second opening 126 through the first opening 125. A first transition chamfer 113 is provided at one end of the fourth surface 1122 close to the second opening 126.

[0065] Specifically, the second seal 124 includes a first opening 125 and a second opening 126 that are in communication, and the first oil seal 11 is inserted into the second opening 126 through the first opening 125. The first sealing lip 121 and the second sealing lip 122 are formed between the communication paths of the first opening 125 and the second opening 126. As Figure 3 shown, the first sealing lip 121 is formed at one end close to the first opening 125, and the second sealing lip 122 is formed at one end close to the second opening 126.

[0066] Therefore, when liquid or particulate matter enters the oil seal 10 through the first opening 125, the first sealing lip 121 can block the liquid and large particulate matter from entering the internal environment of the oil seal 10. Even if there is liquid and small particulate matter passing through the first sealing lip 121 and entering the internal environment of the oil seal 10, the second sealing lip 122 can further block the liquid and small particulate matter from entering the internal environment of the active stabilization device 100. In this way, the oil seal 10 has good waterproof and dustproof capabilities.

[0067] In addition, a first transition chamfer 113 is provided at one end of the fourth surface 1122 close to the second opening 126. During the process of pressing the first oil seal 11 onto the planet carrier 20, the first transition chamfer 113 can be used for pre-positioning. For example, the planet carrier 20 may include a first limiting step. During the pressing process, when the first transition chamfer 113 abuts against the first limiting step, the pressing is stopped.

[0068] It should be noted that the first seal 112 fits on the first skeleton 111. During the pressing process, the interference fit between the fourth surface 1122 and the planet carrier 20 may cause cracking between the first skeleton 111 and the first seal 112. The setting of the first transition chamfer 113 can make the force received by the first seal 112 increase gradually during the pressing process, with a stable transition; preventing the force received by the first seal 112 from mutating, resulting in cracking between the first skeleton 111 and the first seal 112 and affecting the sealing performance.

[0069] Please refer to Figures 2 to 4, in some embodiments, the second seal 124 includes a first opening 125 and a second opening 126 that are in communication, and the first oil seal 11 is inserted into the second opening 126 through the first opening 125. The second seal 124 includes a fifth surface 1241 opposite to the second surface 1112, and a second transition chamfer 127 is provided at one end of the fifth surface 1241 close to the second opening 126.

[0070] Specifically, the second seal 124 includes a fifth surface 1241 opposite to the second surface 1112. The fifth surface 1241 has an annular structure, and the fifth surface 1241 may be parallel to the second surface 1112 (as Figure 4 shown), or may not be parallel to the second surface 1112. A second transition chamfer 127 is provided at one end of the fifth surface 1241 away from the first opening 125 and close to the second opening 126. As Figure 2 shown, the second transition chamfer 127 and the first transition chamfer 113 may be flush axially. Of course, the second transition chamfer 127 and the first transition chamfer 113 may also not be flush axially.

[0071] During the process of press-fitting the second oil seal 12 onto the housing 30, the second transition chamfer 127 can be used for pre-positioning. For example, the housing 30 may include a second limiting step. During the press-fitting process, when the second transition chamfer 127 abuts against the second limiting step, the press-fitting is stopped.

[0072] It should be noted that the second seal 124 covers the second skeleton 123. During the press-fitting process, the fifth surface 1241 is used for interference fit with the housing 30, which may cause cracking between the second skeleton 123 and the second seal 124. The provision of the second transition chamfer 127 can enable the force received by the second seal 124 to increase gradually during the press-fitting process, with a stable transition; preventing the force received by the second seal 124 from mutating, resulting in cracking between the second skeleton 123 and the second seal 124 and affecting the sealing performance.

[0073] Please refer to Figure 2 and Figure 3 , in some embodiments, the second seal 124 includes a first opening 125 and a second opening 126 that are in communication, and the first oil seal 11 is inserted into the second opening 126 through the first opening 125. One ends of the first oil seal 11 and the second oil seal 12 close to the second opening 126 are flush and abutted axially.

[0074] In the related art, the inner oil seal and the outer oil seal included in the oil seal have a large axial misalignment, occupying a large axial space, which is not conducive to the overall layout of the active stabilizer. In the embodiments of the present application, one end of the first oil seal 11 and the second oil seal 12 close to the second opening 126 are axially flush and fitted. In this way, the axial space of the oil seal 10 can be saved, and then the axial space of the active stabilizer 100 is saved, facilitating the overall layout of the active stabilizer 100.

[0075] Please refer to Figure 2 and Figure 3 , in some embodiments, the first skeleton 111 and / or the second skeleton 123 are made of a metal material.

[0076] Specifically, the metal material has rigidity. At least one of the first skeleton 111 and the second skeleton 123 is made of a metal material. For example, the first skeleton 111 is made of a metal material, and the second skeleton 123 can be made of other rigid materials; or, the second skeleton 123 is made of a metal material, and the first skeleton 111 can be made of other rigid materials; or both the first skeleton 111 and the second skeleton 123 are made of a metal material. In this way, the rigid first skeleton 111 can support and fix the first sealing body 112, and the rigid second skeleton 123 can support and fix the first sealing body 112.

[0077] Please refer to Figure 2 and Figure 3 , in some embodiments, the first sealing body 112 and / or the second sealing body 124 are made of a rubber material.

[0078] Specifically, the rubber material has elasticity and wear resistance, making the oil seal 10 not easily damaged. At least one of the first sealing body 112 and the second sealing body 124 is made of a rubber material. For example, the first sealing body 112 is made of a rubber material, and the second sealing body 124 can be made of other elastic materials; or, the second sealing body 124 is made of a rubber material, and the first sealing body 112 can be made of other elastic materials; or both the first sealing body 112 and the second sealing body 124 are made of a rubber material. In this way, the elastic first sealing body 112 can achieve an interference fit with the planet carrier 20, and the elastic second sealing body 124 can achieve an interference fit with the first oil seal 11 and the housing 30 respectively.

[0079] Please refer to Figure 1 and Figure 2 , the embodiments of the present application further provide an active stabilizer 100. The active stabilizer 100 includes the oil seal 10, the planet carrier 20, and the housing 30 in any of the above embodiments. The planet carrier 20 is used for an interference fit with the inner side of the first oil seal 11. The housing 30 is used for an interference fit with the outer side of the second oil seal 12.

[0080] Specifically, the active stabilizer 100 is used to reduce the roll of the vehicle 1000 during turning, so as to improve the handling performance and safety performance of the vehicle 1000. The active stabilizer 100 includes a carrier 20 and a housing 30, and the carrier 20 and the oil seal 10 can be located inside the housing 30. The carrier 20 is used to convert the rotational motion of the motor into the linear movement of the active stabilizer 100. The oil seal 10 is used to block the entry of liquids and particulate matter into the internal environment of the active stabilizer 100, preventing damage to the active stabilizer 100.

[0081] Please refer to Figure 1 and Figure 2 , in some embodiments, the first oil seal 11 is relatively fixed to the carrier 20, and the second oil seal 12 is relatively fixed to the housing 30. When the carrier 20 makes a circular motion around the central axis of the housing 30, the first oil seal 11 makes a circular motion around the central axis of the housing 30 along with the carrier 20.

[0082] Specifically, the central axis of the housing 30 is as Figure 1 shown by the central axis O, and the central axis of the housing 30 coincides with the central axis of the oil seal 10. The carrier 20 can make a circular motion around the central axis of the housing 30. The carrier 20 has an interference fit with the inner side of the first oil seal 11, so that the first oil seal 11 can be fixed relative to the carrier 20. The housing 30 has an interference fit with the outer side of the second oil seal 12, so that the second oil seal 12 can be fixed relative to the housing 30. The first oil seal 11 and the second oil seal 12 have an interference fit through the first sealing lip 121 and the second sealing lip 122, and the first oil seal 11 can move relative to the second oil seal 12. Therefore, when the carrier 20 makes a circular motion around the central axis of the housing 30, the first oil seal 11 can make a circular motion around the central axis of the housing 30 along with the carrier 20.

[0083] Please refer to Figure 1 and Figure 8 , an active suspension system 200 is further provided in an embodiment of the present application, including the active stabilizer 100 in any of the above embodiments.

[0084] Please refer to Figure 8 and Figure 9 , a vehicle 1000 is further provided in an embodiment of the present application. The vehicle 1000 includes a vehicle body 300 and the active suspension system 200 in any of the above embodiments, and the active suspension system 200 is arranged on the vehicle body 300.

[0085] Specifically, as Figure 9 shown, the active suspension system 200 can be arranged at the lower part of the vehicle body 300. The active suspension system 200 can reduce the roll of the vehicle 1000 during turning by controlling the active stabilizer 100, improving the stability and comfort of the vehicle 1000.

[0086] In summary, in the oil seal 10, the active stabilizer 100, the active suspension system 200, and the vehicle 1000 according to the embodiments of the present application, the second oil seal 12 is in interference fit with the first oil seal 11 axially through the first sealing lip 121, and the second oil seal 12 is in interference fit with the first oil seal 11 radially through the second sealing lip 122. In this way, double-layer waterproof and dustproof are achieved, the oil seal 10 has better waterproof and dustproof capabilities, and the sealing performance is better, which can effectively prevent the active stabilizer 100 from being damaged.

[0087] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application 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 thus cannot be understood as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0088] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0089] In the present application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under", and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0090] The foregoing disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and settings of specific examples are described above. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0091] In the description of this specification, the description of reference terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "examples", "specific examples", "some 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 application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0092] Although the embodiments of the present application have been shown and described above, 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 spirit of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. An oil seal (10), characterized in that: Applied to an active stabilizing device (100), the active stabilizing device (100) comprising a planet carrier (20) and a housing (30), the oil seal (10) comprising a first oil seal (11) and a second oil seal (12), the first oil seal (11) and the second oil seal (12) being coaxially arranged, the second oil seal (12) being sleeved on the first oil seal (11), the inner side of the first oil seal (11) being used for interference fit with the planet carrier (20), and the outer side of the second oil seal (12) being used for interference fit with the housing (30); The second oil seal (12) extends axially toward the first oil seal (11) to form a first sealing lip (121), and the second oil seal (12) extends radially toward the first oil seal (11) to form a second sealing lip (122). The second oil seal (12) is interference-fitted with the first oil seal (11) axially through the first sealing lip (121), and the second oil seal (12) is interference-fitted with the first oil seal (11) radially through the second sealing lip (122).

2. The oil seal (10) according to claim 1, characterized in that: The first oil seal (11) and the second oil seal (12) are both annular structures, the first sealing lip (121) comprises at least two first annular protrusions (1211), and the at least two first annular protrusions (1211) are arranged at intervals in the radial direction; The second sealing lip (122) comprises at least two second annular protrusions (1221), and the at least two second annular protrusions (1221) are arranged at intervals along the axial direction.

3. The oil seal (10) according to claim 1, characterized in that: The first oil seal (11) comprises a first frame (111) and a first sealing body (112); the first frame (111) is arranged toward the second oil seal (12); and the first sealing body (112) is attached to a side of the first frame (111) facing away from the second oil seal (12); The second oil seal (12) comprises a second frame (123) and a second sealing body (124), the second sealing body (124) covers the second frame (123), and the first sealing lip (121) and the second sealing lip (122) are both formed on the second sealing body (124); The second sealing body (124) is interference-fitted with the first frame (111) in the axial direction via the first sealing lip (121), and the second sealing body (124) is interference-fitted with the first frame (111) in the radial direction via the second sealing lip (122).

4. The oil seal (10) according to claim 3, characterized in that: The first skeleton (111) comprises a first surface (1111) and a second surface (1112) facing the second oil seal (12), and the first surface (1111) and the second surface (1112) form an angle; The second sealing body (124) is interference fit with the first surface (1111) in the axial direction through the first sealing lip (121), and the second sealing body (124) is interference fit with the second surface (1112) in the radial direction through the second sealing lip (122).

5. The oil seal (10) according to claim 3, characterized in that: The first sealing body (112) comprises a third surface (1121) and a fourth surface (1122) facing away from the second oil seal (12), and the third surface (1121) and the fourth surface (1122) form an angle; The fourth surface (1122) is used for interference fit with the planet carrier (20).

6. The oil seal (10) according to claim 5, characterized in that: The second sealing body (124) comprises a first opening (125) and a second opening (126) which are communicated with each other, and the first oil seal (11) is installed from the first opening (125) to the second opening (126); A first transition chamfer (113) is provided at one end of the fourth surface (1122) close to the second opening (126).

7. The oil seal (10) according to claim 4, characterized in that: The second sealing body (124) comprises a first opening (125) and a second opening (126) which are communicated with each other, and the first oil seal (11) is installed from the first opening (125) to the second opening (126); The second sealing body (124) comprises a fifth surface (1241) opposite to the second surface (1112), and a second transition chamfer (127) is provided at one end of the fifth surface (1241) close to the second opening (126).

8. The oil seal (10) according to claim 3, characterized in that: The second sealing body (124) comprises a first opening (125) and a second opening (126) which are communicated with each other, and the first oil seal (11) is installed from the first opening (125) to the second opening (126); The first oil seal (11) and the second oil seal (12) are flush with each other along the axial direction at one end close to the second opening (126).

9. The oil seal (10) according to claim 3, characterized in that: The first frame (111) and / or the second frame (123) are made of metal.

10. The oil seal (10) according to claim 3, characterized in that: The first sealing body (112) and / or the second sealing body (124) are made of rubber material.

11. An active stabilization device (100), characterized in that: include: The oil seal (10) according to any one of claims 1 to 10; A planet carrier (20) configured to be interference fit with the inner side of the first oil seal (11); The housing (30) is used for interference fit with the outer side of the second oil seal (12).

12. The active stabilization device (100) according to claim 11, characterized in that: The first oil seal (11) is relatively fixed to the planet carrier (20), and the second oil seal (12) is relatively fixed to the housing (30); When the planet carrier (20) performs a circular motion around the central axis of the housing (30), the first oil seal (11) performs a circular motion around the central axis of the housing (30) along with the planet carrier (20).

13. An active suspension system (200), characterized in that: Comprising the active stabilization device (100) as claimed in claim 11 or 12.

14. A vehicle (1000), characterized in that: include: Body(300); and The active suspension system (200) as claimed in claim 13, wherein the active suspension system (200) is arranged on the vehicle body (300).

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