Sealing assembly, shock absorber and vehicle

Abstract

The utility model provides a sealing assembly, a shock absorber and a vehicle. The sealing assembly comprises a first cylindrical part, a tray, a gasket and a sealing ring. The first cylindrical part comprises a connecting section, the connecting section is located at one end of the first cylindrical part, and the peripheral side of the tray is sleeved with the connecting section. A first sealing face and a second sealing face are arranged on the peripheral side of the tray, and the first sealing face is located on the side, in the axial direction of the tray, of the second sealing face. Compared with the second sealing surface, the first sealing surface is closer to the other end of the first cylindrical part, and the radial size of at least part of the second sealing surface is gradually reduced in the direction close to the first sealing surface. The gasket is arranged on the peripheral side of the tray in a sleeving mode, at least part of the gasket is arranged between the connecting section and the second sealing face, the gasket abuts against the connecting section and the second sealing face, and the sealing ring is arranged between the first sealing face and the connecting section and abuts against the first sealing face and the connecting section. According to the sealing assembly, the technical problem that the sealing and anti-rotation effect is poor in the prior art can be solved.

Description

Technical Field

[0001] The present application belongs to the technical field of vehicle suspension, and more specifically, relates to a sealing assembly, a shock absorber and a vehicle. Background Art

[0002] With the popularization of vehicles and the continuous improvement of their functions, sealing structures are being used more and more.

[0003] In the related art, sealing structures usually use sealing rings for sealing, but the sealing rings cannot play a role in preventing rotation. Some sealing structures use the friction of gaskets to prevent rotation, but the sealing effect is poor. The sealing structures of the related art have the technical problem of poor sealing and anti-rotation effect. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a sealing assembly, a shock absorber and a vehicle to solve the technical problem of poor sealing anti-rotation effect existing in the related art.

[0005] To achieve the above objectives, the technical solution adopted in this application is:

[0006] In a first aspect, a sealing assembly is provided, which includes a first cylindrical member, a tray, a gasket, and a sealing ring. The first cylindrical member includes a connecting section, which is located at one end of the first cylindrical member and is sleeved on the outer peripheral side of the tray. A first sealing surface and a second sealing surface are provided on the outer peripheral side of the tray, and the first sealing surface is located on the axial side of the second sealing surface of the tray; compared with the second sealing surface, the first sealing surface is closer to the other end of the first cylindrical member, and the radial dimension of at least part of the second sealing surface gradually decreases in the direction approaching the first sealing surface. The gasket is sleeved on the outer peripheral side of the tray, and at least part of the gasket is arranged between the connecting section and the second sealing surface, and the gasket abuts the connecting section and the second sealing surface. The sealing ring is arranged between the first sealing surface and the connecting section, and abuts the first sealing surface and the connecting section.

[0007] With this technical solution, the radial dimension of at least a portion of the second sealing surface gradually decreases as it approaches the first sealing surface. The first cylindrical member can apply a significant axial force to the tray via the gasket. When torque is applied between the first cylindrical member and the tray, significant static friction is generated between the gasket and the tray, preventing relative rotation between the first cylindrical member and the tray and ensuring a seal between the gasket and the tray. Furthermore, the sealing ring forms a seal between the first sealing surface and the connecting section, ensuring a good seal between the first cylindrical member and the tray.

[0008] Therefore, the sealing assembly of the present application can solve the technical problem of poor sealing anti-rotation effect existing in the related art.

[0009] In some embodiments, the gasket includes a main body and a clipping portion, at least a portion of the main body is disposed between the connecting section and the second sealing surface, the main body abuts against the connecting section and the second sealing surface, the clipping portion is connected to the main body, and at least one of the connecting section and the tray is provided with a clipping groove, and the clipping portion is clipped into the clipping groove.

[0010] In this way, the gasket can be positioned by the engagement between the engaging portion and the engaging groove, thereby preventing the gasket from moving under the squeezing of the first cylindrical member, thereby improving the reliability of the sealing assembly.

[0011] In some embodiments, at least one of the first sealing surface and the connecting section is provided with a sealing groove, and the sealing ring is arranged in the sealing groove; and / or, a third sealing surface and a fourth sealing surface are provided on the inner circumferential side of the connecting section, the third sealing surface corresponds to the first sealing surface, and the fourth sealing surface corresponds to the second sealing surface, and the radial dimension of at least a portion of the fourth sealing surface gradually decreases in a direction approaching the third sealing surface, the sealing ring is arranged between the first sealing surface and the third sealing surface, the sealing ring abuts the first sealing surface and the third sealing surface, and at least a portion of the gasket is arranged between the second sealing surface and the fourth sealing surface, and the gasket abuts the second sealing surface and the fourth sealing surface.

[0012] This provides a better seal between the first sealing surface and the connecting section, thereby improving the sealing and anti-rotation performance of the sealing assembly. Furthermore, the radial dimension of at least a portion of the fourth sealing surface of the connecting section gradually decreases as it approaches the third sealing surface. When torque is applied between the first cylindrical member and the tray, a greater static friction force is generated between the gasket and the connecting section, further preventing relative rotation between the first cylindrical member and the tray, thereby further improving the sealing and anti-rotation performance of the sealing assembly.

[0013] In some embodiments, the slot includes a first side surface and a second side surface, the first side surface is located on the axial side of the second side surface of the tray; compared with the second side surface, the first side surface is closer to the other end of the first cylindrical member; the slot is arranged on the tray, and the clamping portion abuts the second side surface; or, the slot is arranged on the connecting section, and the clamping portion abuts the first side surface.

[0014] In this way, the card slot can be engaged with the card connection portion, and can also abut against the connecting section through the first side surface, or can also abut against the tray through the second side surface, which can increase the contact area between the gasket and the tray or the connecting section, and can also increase the circumferential force between the gasket and the connecting section or the tray, so that when there is torque between the first cylindrical member and the tray, a greater static friction force can be generated, which can further improve the sealing and anti-rotation effect.

[0015] In some embodiments, the card slot also includes a bottom surface intersecting with the first side surface and the second side surface, and there is a gap between the card slot and the bottom surface; and / or, when the card slot is set on the tray, there is a gap between the card slot and the first side surface, and when the card slot is set on the connecting section, there is a gap between the card slot and the second side surface.

[0016] In this way, the matching accuracy requirement of the card slot and the card connection portion is low, which can reduce the processing difficulty of the card slot and the gasket, thereby helping to reduce the processing cost of the tray and the gasket, and further reduce the processing cost of the sealing assembly.

[0017] In some embodiments, the second sealing surface is a conical surface, and the angle between the generatrix of the conical surface and the axis is greater than or equal to 15° and less than or equal to 25°.

[0018] In this way, the second sealing surface is a conical surface, which can increase the contact area between the gasket and the tray, and the angle between the generatrix of the conical surface and the axis is between 15° and 25°, which can make the gasket and the tray have a larger axial force. When there is torque between the first cylindrical member and the tray, the gasket and the tray can generate a larger static friction force to prevent the first cylindrical member and the tray from rotating relative to each other, thereby improving the sealing and anti-rotation effect of the sealing assembly.

[0019] In some embodiments, the angle between the generatrix of the cone and the axis can be 15°, 16°, 17°, 18°, 19°, 20°, 21°, 22°, 23°, 24° or 25°.

[0020] In this way, the angle between the generatrix of the conical surface and the axis can be specifically selected according to the usage scenario of the sealing component, and the sealing component has good universality.

[0021] In some embodiments, the sealing assembly further includes a second cylindrical member, the tray is provided with a through hole, the second cylindrical member is passed through the through hole and the first cylindrical member, and the tray is fixedly connected to the second cylindrical member.

[0022] In this way, the tray can be installed on the second cylindrical member, and the second cylindrical member can be anti-rotationally sealed by the tray, gasket and sealing ring, which can increase the scope of use of the sealing assembly and thus improve the universality of the sealing assembly.

[0023] In a second aspect, the present application provides a shock absorber comprising the aforementioned sealing assembly, an air spring, a fluid reservoir, and a spring tray. The air spring comprises a piston cylinder, wherein the first cylindrical member is the piston cylinder; the second cylindrical member is the fluid reservoir; and the tray is the spring tray. The shock absorber provided in this application has similar technical effects as the aforementioned sealing assembly and will not be further described here.

[0024] In a third aspect, the present application provides a vehicle comprising the aforementioned shock absorber. The vehicle provided by the present application has similar technical effects as the aforementioned shock absorber, and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0026] Figure 1 A schematic structural diagram of a shock absorber provided in an embodiment of the present application;

[0027] Figure 2 A schematic diagram of a partial cross-sectional structure of a shock absorber provided in an embodiment of the present application;

[0028] Figure 3 This is a schematic cross-sectional view of the sealing assembly provided in an embodiment of the present application, wherein the first cylindrical member is not shown;

[0029] Figure 4 for Figure 3 A partial enlarged view of point C in the middle;

[0030] Figure 5 This is one of the cross-sectional structural diagrams of the gasket provided in the embodiment of the present application;

[0031] Figure 6 This is a second schematic cross-sectional view of the gasket provided in an embodiment of the present application;

[0032] Figure 7 A schematic cross-sectional view of the first cylindrical member provided in an embodiment of the present application;

[0033] Figure 8 for Figure 5 One of the D-direction views in;

[0034] Figure 9 for Figure 5 The second D-direction view.

[0035] Among them, the reference numerals in the figures are:

[0036] 10-air spring; 20-air reservoir; 30-oil pump; 40-motor;

[0037] 1-first cylindrical member; 11-connecting section; 101-third sealing surface; 102-fourth sealing surface; 2-tray; 201-perforation; 21-first sealing surface; 22-second sealing surface; 23-flange; 3-gasket; 31-main body; 32-clamping portion; 4-sealing ring; 5-second cylindrical member; 6-bladder; 7-casing; 8-dust cover; 91-slot; 911-first side surface; 912-second side surface; 913-bottom surface; 92-sealing groove. DETAILED DESCRIPTION

[0038] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0039] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0040] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0042] With the increasing popularity of vehicles and the continuous development of intelligent driving solutions, the driving experience has become a key performance indicator of vehicles. With the popularization of electric vehicles and the continuous development of intelligent driving solutions, fully active suspension has become an increasing focus and highlight in the automotive industry. The shock absorber in a fully active suspension is usually equipped with a motor, oil pump, and other components.

[0043] The embodiment of the present application provides a vehicle, which can be an electric vehicle, or a vehicle powered by other means. The vehicle of the embodiment of the present application can use an integrated shock absorber.

[0044] See also Figure 1 The embodiment of the present application provides a shock absorber, which includes an air spring 10, a liquid storage cylinder ( Figure 1 The air reservoir 20 (not shown) is a structure comprising an air spring 10, an oil pump 30, and a motor 40. The motor 40 controls the operation of the oil pump 30 according to the vehicle's condition. The oil pump 30 adjusts the oil pressure within the reservoir, allowing for quick adjustments to the vehicle's posture as needed. The air reservoir 20 can be used in conjunction with the liquid reservoir. The air spring 10, the liquid reservoir, the air reservoir 20, the oil pump 30, and the motor 40 are assembled together.

[0045] See also Figure 2 The air spring 10 includes a bladder skin 6, a casing 7, a dust cover 8, and a piston cylinder. The bladder skin 6, casing 7, and dust cover 8 are connected in sequence. The piston cylinder is located inside the casing 7 and is connected to the bladder skin 6. The shock absorber also includes a spring tray 2, which is sleeved on the outer circumference of the liquid reservoir and fixedly connected to the liquid reservoir. The piston cylinder is sleeved on the outer circumference of the liquid reservoir and the spring tray 2. The spring tray 2 is also connected to the dust cover 8.

[0046] The inventors found that after the air spring 10, the fluid reservoir, the air reservoir 20, the oil pump 30 and the motor 40 are installed together, the center of mass of the shock absorber is relative to the axis of the fluid reservoir (such as Figure 1 and Figure 2 The line L) in the figure is offset, and relative rotation is likely to occur between the piston cylinder and the liquid storage cylinder. Therefore, the piston cylinder and the liquid storage cylinder need to be sealed and prevented from rotating using a sealing structure.

[0047] In related art, sealing structures typically utilize sealing rings, which are ineffective in preventing rotation. Other sealing structures utilize the friction of gaskets to prevent rotation, but these provide poor sealing effectiveness. These related art sealing structures suffer from the technical problem of poor sealing and rotational effectiveness.

[0048] In order to solve the above technical problems, an embodiment of the present application provides a sealing assembly.

[0049] Please also refer to Figure 2 、 Figure 3 and Figure 4 The sealing assembly provided by the embodiment of the present application is now described. The sealing assembly includes a first cylindrical member 1 and a tray 2. The first cylindrical member 1 includes a connecting section 11, which is located at one end of the first cylindrical member 1 (such as Figure 2 The connecting section 11 is sleeved on the outer circumference of the tray 2. The outer circumference of the tray 2 is provided with a first sealing surface 21 and a second sealing surface 22. The first sealing surface 21 is located on the side of the second sealing surface 22 in the axial direction of the tray 2; compared with the second sealing surface 22, the first sealing surface 21 is closer to the other end of the first cylindrical member 1 (such as Figure 2 (B-end in the).

[0050] It is understood that at least a portion of the second sealing surface 22 is a conical surface or an arc surface, and the radial dimension of at least a portion of the second sealing surface 22 gradually decreases in a direction approaching the first sealing surface 21. In this way, the first cylindrical member 1 can apply a large axial force to the tray 2.

[0051] The sealing assembly also includes a gasket 3, which is annular and sleeved around the outer circumference of the tray 2. At least a portion of the gasket 3 is positioned between the connecting section 11 and the second sealing surface 22, with the gasket 3 abutting against the connecting section 11 and the second sealing surface 22. This allows the first cylindrical member 1 to exert a significant axial force on the tray 2 via the gasket 3. When torque is applied between the first cylindrical member 1 and the tray 2, significant static friction is generated between the gasket 3 and the tray 2, preventing relative rotation between the first cylindrical member 1 and the tray 2 and ensuring a sealing effect between the gasket 3 and the tray 2.

[0052] The sealing assembly further includes a sealing ring 4, which is disposed between the first sealing surface 21 and the connecting section 11 and abuts against the first sealing surface 21 and the connecting section 11. Thus, the sealing ring 4 can form a seal between the first sealing surface 21 and the connecting section 11, thereby achieving a good sealing effect between the first cylindrical member 1 and the tray 2.

[0053] Therefore, the sealing assembly of the present application has a good sealing and anti-rotation effect, which can solve the technical problem of poor sealing and anti-rotation effect existing in the related art.

[0054] Please continue reading Figure 2 、 Figure 3 and Figure 4 The sealing assembly further includes a second cylindrical member 5. The tray 2 is provided with a through-hole 201. The second cylindrical member 5 extends through the through-hole 201 and the first cylindrical member 1. The tray 2 is fixedly connected to the second cylindrical member 5. This allows the tray 2 to be mounted on the second cylindrical member 5. The tray 2, gasket 3, and sealing ring 4 provide an anti-rotation seal between the second cylindrical member 5 and the first cylindrical member 1, thereby expanding the range of applications and enhancing the universality of the sealing assembly. The tray 2 is provided with a flange 23, which is connected to the dust cover 8.

[0055] It should be noted that the first cylindrical member 1 may be the piston cylinder of the air spring 10 in the shock absorber, the second cylindrical member 5 may be the fluid reservoir of the shock absorber, and the tray 2 may be the spring tray 2 of the shock absorber. Therefore, the piston cylinder and fluid reservoir of the shock absorber can be anti-rotationally sealed by the sealing assembly of the embodiment of the present application, thereby preventing the piston cylinder and fluid reservoir from rotating relative to each other and providing a seal between the piston cylinder and fluid reservoir.

[0056] When the shock absorber provided in the embodiment of the present application is used on a vehicle, the torque generated by the vehicle's motion shock absorber is less than 35 N·m. The sealing assembly provided in the embodiment of the present application, when the first cylindrical member 1 is pushed by 2 bar of air pressure to refuel the refueling tray 2, can withstand torques exceeding 40 N·m. The air spring 10 of the shock absorber in the present application has a high pressure within it, and the pressure applied by the air spring 10 to the piston cylinder is greater than 6 bar. Therefore, the sealing assembly provided in the embodiment of the present application can prevent relative rotation between the piston cylinder and the reservoir.

[0057] Of course, the sealing assembly of the embodiment of the present application can also be used for anti-rotation sealing of other devices.

[0058] In some embodiments, the second sealing surface 22 can be a conical surface, and the angle between the center line of the conical surface and the axis is greater than or equal to 15° and less than or equal to 25°, so that the contact area between the gasket 3 and the tray 2 can be increased. In addition, the angle between the center line of the conical surface and the axis is between 15° and 25°, which can create a larger axial force between the gasket 3 and the tray 2. When there is a torque between the first cylindrical member 1 and the tray 2, the gasket 3 and the tray 2 can generate a larger static friction force to prevent the first cylindrical member 1 and the tray 2 from rotating relative to each other, thereby improving the sealing and anti-rotation effect of the sealing assembly.

[0059] Exemplarily, the angle between the generatrix of the conical surface and the axis may be 15°. Exemplarily, the angle between the generatrix of the conical surface and the axis may be 16°. Exemplarily, the angle between the generatrix of the conical surface and the axis may be 17°. Exemplarily, the angle between the generatrix of the conical surface and the axis may be 18°. Exemplarily, the angle between the generatrix of the conical surface and the axis may be 19°. Exemplarily, the angle between the generatrix of the conical surface and the axis may be 20°. Exemplarily, the angle between the generatrix of the conical surface and the axis may be 21°. Exemplarily, the angle between the generatrix of the conical surface and the axis may be 22°. Exemplarily, the angle between the generatrix of the conical surface and the axis may be 23°. Exemplarily, the angle between the generatrix of the conical surface and the axis may be 24°. Exemplarily, the angle between the generatrix of the conical surface and the axis may be 25°.

[0060] It is understandable that the angle between the generatrix of the conical surface and the axis can be specifically selected according to the usage scenario of the sealing component, and the sealing component has good universality.

[0061] In some embodiments, the gasket 3 includes a main body 31 and a snap-fitting portion 32. The snap-fitting portion 32 is annular and connected to the main body 31. At least a portion of the main body 31 is disposed between the connecting section 11 and the second sealing surface 22, with the main body 31 abutting against the connecting section 11 and the second sealing surface 22. A snap-fitting slot 91 is defined in at least one of the connecting section 11 and the tray 2, with the snap-fitting portion 32 snapping into the snap-fitting slot 91. This allows the gasket 3 to be positioned by snapping the snap-fitting portion 32 into the snap-fitting slot 91, preventing movement of the gasket 3 under pressure from the first cylindrical member 1, thereby improving the reliability of the sealing assembly.

[0062] Please also refer to Figure 3 、 Figure 4 and Figure 5 In some examples, the engaging portion 32 may be located on the inner circumference of the main body 31 , the engaging slot 91 may be provided on the tray 2 , and the engaging portion 32 may be engaged with the engaging slot 91 .

[0063] Please also refer to Figure 6 and Figure 7 In some examples, the clamping portion 32 may be located on the outer peripheral side of the main body 31 , the clamping groove 91 is provided on the piston cylinder, and the clamping portion 32 is clamped with the clamping groove 91 .

[0064] Please continue reading Figure 4 In some embodiments, the slot 91 includes a first side surface 911 and a second side surface 912 , wherein the first side surface 911 is located on one side of the second side surface 912 in the axial direction of the tray 2 . Compared with the second side surface 912 , the first side surface 911 is closer to the other end of the first cylindrical member 1 .

[0065] When the slot 91 is disposed on the tray 2 , the engaging portion 32 abuts against the second side surface 912 ; when the slot 91 is disposed on the connecting section 11 , the engaging portion 32 abuts against the first side surface 911 .

[0066] In this way, the engaging groove 91 can engage with the engaging portion 32, and also abut against the connecting section 11 via the first side surface 911, or abut against the tray 2 via the second side surface 912, thereby increasing the contact area between the gasket 3 and the tray 2 or the connecting section 11, and also increasing the circumferential force between the gasket 3 and the connecting section 11, or between the gasket 3 and the tray 2. Therefore, when torque is applied between the first cylindrical member 1 and the tray 2, a greater static friction force can be generated between the gasket 3 and the connecting section 11, or between the gasket 3 and the tray 2, further improving the sealing and anti-rotation effect.

[0067] Please continue reading Figure 4 The card slot 91 further includes a bottom surface 913 intersecting the first side surface 911 and the second side surface 912 , and a gap is provided between the card portion 32 and the bottom surface 913 .

[0068] Furthermore, when the slot 91 is disposed on the tray 2 , a gap exists between the engaging portion 32 and the first side surface 911 . When the slot 91 is disposed on the connecting section 11 , a gap exists between the engaging portion 32 and the second side surface 912 .

[0069] In this way, the matching accuracy requirement of the card slot 91 and the card connection portion 32 is low, which can reduce the processing difficulty of the card slot 91 and the gasket 3, thereby helping to reduce the processing cost of the tray 2 and the gasket 3, and further reduce the processing cost of the sealing assembly.

[0070] In some embodiments, at least one of the first sealing surface 21 and the connecting section 11 is provided with a sealing groove 92, and the sealing ring 4 is disposed in the sealing groove 92. That is, in some examples, the first sealing surface 21 may be provided with the sealing groove 92; in other examples, the connecting section 11 may be provided with the sealing groove 92; and in still other examples, both the first sealing surface 21 and the connecting section 11 are provided with the sealing groove 92.

[0071] The sealing assembly of the embodiment of the present application can specifically set the opening position of the sealing groove 92 according to the size of the piston cylinder and the tray 2. In addition, the sealing ring 4 can provide a better sealing effect between the first sealing surface 21 and the connecting section 11, thereby improving the sealing and anti-rotation effect of the sealing assembly.

[0072] Please also refer to Figure 2 、 Figure 3 、 Figure 4 and Figure 7 In some embodiments, a third sealing surface 101 and a fourth sealing surface 102 are provided on the inner circumference of the connecting section 11. The third sealing surface 101 corresponds to the first sealing surface 21, and the fourth sealing surface 102 corresponds to the second sealing surface 22. The radial dimension of at least a portion of the fourth sealing surface 102 gradually decreases as it approaches the third sealing surface 101. At least a portion of the gasket 3 is disposed between the second sealing surface 22 and the fourth sealing surface 102, with the gasket 3 abutting against the second sealing surface 22 and the fourth sealing surface 102. In this way, when torque is applied between the first cylindrical member 1 and the tray 2, a relatively large static friction force can be generated between the gasket 3 and the connecting section 11, further preventing relative rotation between the first cylindrical member 1 and the tray 2, thereby further improving the sealing and anti-rotation effect of the sealing assembly.

[0073] In addition, the sealing ring 4 is arranged between the first sealing surface 21 and the third sealing surface 101. The sealing ring 4 abuts against the first sealing surface 21 and the third sealing surface 101, and can seal between the first sealing surface 21 and the third sealing surface 101, which is conducive to providing a sealing effect.

[0074] In some embodiments, the gasket 3 is a rubber gasket 3 .

[0075] See also Figure 8The clamping portion 32 may be annular. Correspondingly, the clamping groove 91 may also be annular. This makes it difficult for the clamping portion 32 to separate from the clamping groove 91 after the clamping portion 32 is clamped to the clamping groove 91, which is beneficial to improving the stability of the gasket 3.

[0076] In addition, the clamping portion 32 can be provided on one side edge of the main body 31 close to the other end of the first cylindrical member 1 , or the clamping portion 32 can be provided in the middle of the main body 31 .

[0077] See also Figure 9 A gasket 3 may have multiple engaging portions 32, each of which is connected to the main body 31 and spaced apart along the edge of the main body 31. Correspondingly, there may be multiple engaging slots 91, each corresponding to each of the engaging portions 32. This allows for easy deformation of each engaging portion 32, thereby facilitating engagement with the engaging slots 91 and facilitating installation.

[0078] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A sealing assembly, characterized in that: include: a first cylindrical member, the first cylindrical member comprising a connecting section, the connecting section being located at one end of the first cylindrical member; The tray, wherein the connecting section is sleeved on the outer circumference of the tray, and the outer circumference of the tray is provided with a first sealing surface and a second sealing surface, the first sealing surface being located on one side of the second sealing surface in the axial direction of the tray; the first sealing surface is closer to the other end of the first cylindrical member than the second sealing surface; and the radial dimension of at least a portion of the second sealing surface gradually decreases in a direction approaching the first sealing surface; a gasket, the gasket being sleeved on the outer circumference of the tray, at least a portion of the gasket being disposed between the connecting section and the second sealing surface, the gasket being in contact with the connecting section and the second sealing surface; A sealing ring is provided between the first sealing surface and the connecting section, and the sealing ring abuts against the first sealing surface and the connecting section.

2. The sealing assembly according to claim 1, wherein: The gasket includes a main body and a clamping part, at least part of the main body is arranged between the connecting section and the second sealing surface, the main body abuts against the connecting section and the second sealing surface, the clamping part is connected to the main body, and at least one of the connecting section and the tray is provided with a clamping groove, and the clamping part is clamped with the clamping groove.

3. The sealing assembly according to claim 1, wherein: At least one of the first sealing surface and the connecting section is provided with a sealing groove, and the sealing ring is provided in the sealing groove; And / or, a third sealing surface and a fourth sealing surface are provided on the inner circumferential side of the connecting section, the third sealing surface corresponds to the first sealing surface, the fourth sealing surface corresponds to the second sealing surface, the radial dimension of at least part of the fourth sealing surface gradually decreases in the direction approaching the third sealing surface, the sealing ring is arranged between the first sealing surface and the third sealing surface, the sealing ring abuts against the first sealing surface and the third sealing surface, at least part of the gasket is arranged between the second sealing surface and the fourth sealing surface, and the gasket abuts against the second sealing surface and the fourth sealing surface.

4. The sealing assembly according to claim 2, wherein: The slot includes a first side surface and a second side surface, wherein the first side surface is located on one side of the second side surface in the axial direction of the tray; and the first side surface is closer to the other end of the first cylindrical member than the second side surface. The card slot is provided on the tray, and the card connection portion abuts against the second side surface; or the card slot is provided on the connecting section, and the card connection portion abuts against the first side surface.

5. The sealing assembly according to claim 4, wherein: The card slot further includes a bottom surface intersecting with the first side surface and the second side surface, and a gap is formed between the card engaging portion and the bottom surface; And / or, when the card slot is provided on the tray, there is a gap between the card connection portion and the first side surface; when the card slot is provided on the connecting section, there is a gap between the card connection portion and the second side surface.

6. The sealing assembly according to claim 1, wherein: The second sealing surface is a conical surface, and the angle between the generatrix of the conical surface and the axis is greater than or equal to 15° and less than or equal to 25°.

7. The sealing assembly according to claim 6, wherein: The included angle between the generatrix of the cone surface and the axis is 15°, 16°, 17°, 18°, 19°, 20°, 21°, 22°, 23°, 24° or 25°.

8. The sealing assembly according to any one of claims 1 to 7, wherein: The sealing assembly further includes a second cylindrical member. The tray is provided with a through hole. The second cylindrical member is passed through the through hole and the first cylindrical member. The tray is fixedly connected to the second cylindrical member.

9. A shock absorber, characterized in that: The sealing assembly according to claim 8, wherein the vibration damper further comprises: An air spring, wherein the air spring has a piston cylinder, and the first cylindrical member is the piston cylinder; Liquid storage cylinder, the second cylindrical member is the liquid storage cylinder; Spring tray, the tray is the spring tray.

10. A vehicle, characterized in that: Comprising the vibration damper of claim 9.

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