Sliding bearing and vehicle

Abstract

The utility model provides a sliding bearing and a vehicle. The problem that components of the sliding bearing are prone to being separated is solved. The sliding bearing comprises: an upper end cover; a sliding support assembly; the lower end cover is in clearance fit with the upper end cover, so that a containing cavity used for containing the sliding supporting assembly is formed between the lower end cover and the upper end cover; the first limiting structure and the second limiting structure are arranged between the upper end cover and the lower end cover and are used for axially limiting the upper end cover and the lower end cover; the sliding bearing is provided with a central axis, and the distance between the first limiting structure and the central axis is smaller than the distance between the second limiting structure and the central axis. According to the sliding bearing, the problem that the upper end cover and the lower end cover of the sliding bearing are prone to axial separation can be solved, and then the reliability of the sliding bearing can be improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a sliding bearing and a vehicle. Background Art

[0002] At present, vehicles have been widely popularized in ordinary families and integrated into people's daily life. The vehicle includes a body and a suspension. In order to improve the connection stability between the body and the suspension, a sliding bearing is usually arranged between the body and the suspension.

[0003] Sliding bearings are subject to torsion and pressure. In the related art, only one of the inner ring or the outer ring of the sliding bearing is provided with an anti-detachment structure, which makes it easy for the sliding bearing to separate components, which is not conducive to improving the reliability of the sliding bearing. Utility Model Content

[0004] The present application provides a sliding bearing and a vehicle to improve the problem that components of the sliding bearing are easily separated.

[0005] The specific technical solutions are as follows:

[0006] In a first aspect, the present application provides a sliding bearing, comprising: an upper end cover; a sliding support assembly; a lower end cover, wherein the lower end cover is clearance-matched with the upper end cover to form an accommodating cavity for accommodating the sliding support assembly between the lower end cover and the upper end cover; and a first limiting structure and a second limiting structure, wherein the first limiting structure and the second limiting structure are both arranged between the upper end cover and the lower end cover and are used to axially limit the upper end cover and the lower end cover;

[0007] Wherein, the sliding bearing has a central axis, and the distance between the first limiting structure and the central axis is smaller than the distance between the second limiting structure and the central axis.

[0008] The sliding bearing of the present application is provided with a first limiting structure and a second limiting structure between the upper end cover and the lower end cover. The first limiting structure can limit the side of the sliding bearing close to the central axis, and the second limiting structure can limit the side of the sliding bearing away from the central axis. Thus, the problem of axial separation between the upper end cover and the lower end cover of the sliding bearing can be improved, which is conducive to improving the reliability of the sliding bearing.

[0009] In some embodiments, the first limiting structure includes a first protrusion and a second protrusion that cooperate with each other, one of the first protrusion and the second protrusion is arranged on the upper end cover, and the other is arranged on the lower end cover; the surface of at least one of the first protrusion and the second protrusion is a curved surface.

[0010] In some embodiments, the upper end cover is annular, and includes a main body, a first flange provided on the side of the main body close to the central axis, and a second flange provided on the side of the main body away from the central axis; the lower end cover is annular, and has a first surface opposite to the main body, a second surface opposite to the first flange, and a third surface opposite to the second flange; the first limiting structure is located in a first gap formed between the second surface and the first flange, and the second limiting structure is located in a second gap formed between the third surface and the second flange.

[0011] In some embodiments, the first limiting structure includes at least one first protrusion and at least one second protrusion, the first protrusion is connected to the first flange, and the second protrusion is connected to the second surface; the surface of the first protrusion is formed by multiple planes connected in sequence, and the surface of the second protrusion is a curved surface.

[0012] In some embodiments, there are a plurality of first protrusions, and the plurality of first protrusions are circumferentially spaced apart on the first flange; there are a plurality of second protrusions, and the plurality of second protrusions are circumferentially spaced apart on the second surface.

[0013] In some embodiments, the first protrusion is a first convex strip circumferentially arranged around the first flange, and the second protrusion is a second convex strip circumferentially arranged around the second surface.

[0014] In some embodiments, the second limiting structure includes a third protrusion and at least one fourth protrusion, the third protrusion is circumferentially arranged around the second flange, and the fourth protrusion is arranged on the third surface.

[0015] In some embodiments, the second surface includes: a first sub-surface, which is a stepped surface, and the first sub-surface cooperates with the first flange gap to form the first gap; and a second sub-surface, which is connected to the first sub-surface, and the second sub-surface is located below the first sub-surface, and a plurality of fifth protrusions are arranged on the second sub-surface at intervals along the circumferential direction.

[0016] In some embodiments, the first surface is provided with a sealing installation groove, and the sealing installation groove is located on the outer side of the first surface; the sliding bearing also includes a sealing member, and the sealing member is provided in the sealing installation groove, and the sealing lip of the sealing member abuts against the second flange.

[0017] In some embodiments, a first limiting groove is provided on the first surface, a second limiting groove is provided on a side surface of the main body close to the lower end cover, one end of the sliding support assembly is located in the first limiting groove, and the other end is located in the second limiting groove.

[0018] In a second aspect, the present application proposes a vehicle, comprising a body, a suspension and the sliding bearing described in the first aspect; the body is connected to the upper surface of the upper end cover, and the suspension is connected to the lower surface of the lower end cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a sliding bearing provided in one embodiment of the present application at a certain viewing angle;

[0020] Figure 2 A schematic cross-sectional structure diagram of a sliding bearing provided in one embodiment of the present application;

[0021] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0022] Figure 4 for Figure 2 Schematic diagram of the enlarged structure at C in the middle;

[0023] Figure 5 A schematic diagram of the structure of an upper end cover provided in one embodiment of the present application;

[0024] Figure 6 A schematic structural diagram of a lower end cover provided in one embodiment of the present application.

[0025] The description of the reference numerals in the figures is as follows:

[0026] 10-sliding bearing, 10a-mounting hole, L-central axis;

[0027] 100-upper end cover, 110-main body, 111-second limiting groove, 112-second weight reduction groove, 120-first flange, 130-second flange;

[0028] 200-sliding bearing assembly, 210-pad, 220-friction plate;

[0029] 300-lower end cover, 310-first surface, 311-first limiting groove, 312-first weight reduction groove, 313-sealing installation groove, 320-second surface, 321-first sub-surface, 322-second sub-surface, 3221-fifth protrusion, 330-third surface;

[0030] 400-first limiting structure, 410-first protruding portion, 420-second protruding portion;

[0031] 500-second limiting structure, 510-third protruding portion, 520-fourth protruding portion;

[0032] 600 - accommodating chamber, 610 - first gap, 620 - second gap, 700 - sealing member. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0034] In the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or positional relationship 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, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as suggesting or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In the first aspect, the present application provides a sliding bearing 10. Figures 1 to 4As shown, the sliding bearing 10 includes an upper end cover 100, a sliding support assembly 200, a lower end cover 300, a first limiting structure 400 and a second limiting structure 500. The lower end cover 300 is clearance-matched with the upper end cover 100 to form a receiving cavity 600 for receiving the sliding support assembly 200 between the lower end cover 300 and the upper end cover 100. The first limiting structure 400 and the second limiting structure 500 are both arranged between the upper end cover 100 and the lower end cover 300, and are used to axially limit the upper end cover 100 and the lower end cover 300. Among them, the sliding bearing 10 has a central axis L, and the distance between the first limiting structure 400 and the central axis L is smaller than the distance between the second limiting structure 500 and the central axis L.

[0038] In the present application, the upper end cover 100 is used to connect with the vehicle body, and the lower end cover 300 is used to connect with the suspension. When the suspension rotates, the lower end cover 300 can rotate relative to the upper end cover 100 under the action of the sliding support assembly 200, thereby realizing the rotation between the suspension and the vehicle body, so as to prevent the airbag of the air spring in the suspension from being subjected to a large torsional force, thereby improving the life and reliability of the air spring. Optionally, the sliding support assembly 200 may include a pad 210 and at least one friction plate 220 arranged on a side surface of the pad 210 in the thickness direction, and the pad 210 is used to support the upper end cover 100 and the lower end cover 300 to evenly distribute the load. At the same time, the pad 210 can also adjust the matching clearance between the upper end cover 100 and the lower end cover 300. The friction plate 220 can be made of a material with a low friction coefficient and high wear resistance, for example, the material of the friction plate 220 can be graphite, bronze, polymer composite materials, etc.

[0039] The first limiting structure 400 and the second limiting structure 500 are used to axially limit the upper end cover 100 and the lower end cover 300 to improve the problem of axial separation between the upper end cover 100 and the lower end cover 300. The axial direction refers to the direction where the central axis L of the sliding bearing 10 is located. Further, the distance between the first limiting structure 400 and the central axis L is smaller than the distance between the second limiting structure 500 and the central axis L, that is, the first limiting structure 400 and the second limiting structure 500 are located at different positions, and the second limiting structure 500 is located outside the first limiting structure 400. The outside refers to the side away from the central axis L of the sliding bearing 10. Correspondingly, the inside refers to the side close to the central axis L of the sliding bearing 10.

[0040] The sliding bearing 10 of the present application is provided with a first limiting structure 400 and a second limiting structure 500 between the upper end cover 100 and the lower end cover 300. The first limiting structure 400 can limit the inner side of the sliding bearing 10, and the second limiting structure 500 can limit the outer side of the sliding bearing 10. Thus, the problem of axial separation between the upper end cover 100 and the lower end cover 300 of the sliding bearing 10 can be improved, which is conducive to improving the reliability of the sliding bearing 10.

[0041] In some embodiments, Figure 2 , Figure 3 and Figure 4 As shown, the first limiting structure 400 includes a first protrusion 410 and a second protrusion 420 that cooperate with each other, one of the first protrusion 410 and the second protrusion 420 is provided on the upper end cover 100, and the other is provided on the lower end cover 300. The surface of at least one of the first protrusion 410 and the second protrusion 420 is a curved surface.

[0042] In this embodiment, the first limiting structure 400 includes a first protrusion 410 and a second protrusion 420. When the upper end cover 100 and the lower end cover 300 are assembled, the first protrusion 410 and the second protrusion 420 can generate a blocking force to prevent the upper end cover 100 and the lower end cover 300 from separating from each other due to the interference effect in the axial direction, thereby improving the problem that the inner side of the sliding bearing 10 is easily disengaged in the axial direction.

[0043] After the upper end cover 100 and the lower end cover 300 are assembled, if the first protrusion 410 is located on the upper end cover 100 and the second protrusion 420 is located on the lower end cover 300, the second protrusion 420 is located above the first protrusion 410; if the first protrusion 410 is located on the lower end cover 300 and the second protrusion 420 is located on the upper end cover 100, the first protrusion 410 is located above the second protrusion 420.

[0044] Furthermore, the surface of at least one of the first protrusion 410 and the second protrusion 420 is a curved surface. It is easy to understand that when the upper end cover 100 and the lower end cover 300 are assembled, they will also be hindered by the first limiting structure 400. In this case, the surface of at least one of the first protrusion 410 and the second protrusion 420 is set as a curved surface in this embodiment, so that the hindering force generated by the axial interference between the first protrusion 410 and the second protrusion 420 will not be too large. In this way, personnel can assemble the inner side of the sliding bearing 10 into place by pressing, so that on the one hand, the problem of easy axial separation between the upper end cover 100 and the lower end cover 300 of the sliding bearing 10 can be improved, and on the other hand, it is also conducive to improving the assembly convenience between the upper end cover 100 and the lower end cover 300.

[0045] Optionally, the curved surface may be, for example, a spherical surface, an arc surface, etc., which is not limited in the present application.

[0046] In some embodiments, Figure 5 and Figure 6 As shown, the upper end cover 100 is annular, and includes a main body 110, a first flange 120 provided on the side of the main body 110 close to the central axis L, and a second flange 130 provided on the side of the main body 110 away from the central axis L. The lower end cover 300 is annular, and includes a first surface 310 opposite to the main body 110, a second surface 320 opposite to the first flange 120, and a third surface 330 opposite to the second flange 130. Figures 2 to 4 As shown, a first gap 610 is formed between at least a portion of the second surface 320 and the first flange 120 , a second gap 620 is formed between at least a portion of the third surface 330 and the second flange 130 , the first limiting structure 400 is located in the first gap 610 , and the second limiting structure 500 is located in the second gap 620 .

[0047] This embodiment proposes a specific structure of the upper end cover 100 and the lower end cover 300. Figure 1 As shown, the upper end cover 100 and the lower end cover 300 are both ring-shaped. After the upper end cover 100 and the lower end cover 300 are assembled, a mounting hole 10 a is provided in the middle, and the axis of the mounting hole 10 a is the center axis L of the sliding bearing 10 .

[0048] The upper end cover 100 includes a main body 110, a first flange 120, and a second flange 130. The first flange 120 is located on a side close to the central axis L of the sliding bearing 10, that is, the inner side of the sliding bearing 10, and the second flange 130 is located on a side away from the central axis L of the sliding bearing 10, that is, the outer side of the sliding bearing 10. In this way, the first flange 120, the main body 110, and the second flange 130 are collectively arranged to form a groove shape with the notch facing the lower end cover 300.

[0049] The lower end cover 300 has a first surface 310, a second surface 320 and a third surface 330. The second surface 320 is located on the inner side, the third surface 330 is located on the outer side, and the first surface 310 is opposite to the main body 110. Therefore, when the upper end cover 100 and the lower end cover 300 are assembled, the first surface 310, the second surface 320 and the third surface 330 are matched with the notch gap of the groove, so that a first gap 610 is formed between at least a portion of the second surface 310 and the first flange 120, and a second gap 620 is formed between at least a portion of the third surface 330 and the second flange 130. In this way, the first limiting structure 400 can be arranged in the first gap 610, and the second limiting structure 500 can be arranged in the second gap 620, which is conducive to improving the convenience of arranging the two limiting structures.

[0050] Furthermore, if Figure 2 As shown, the first surface 310 of the lower end cover 300 is provided with a first limiting groove 311, and the side surface of the main body 110 close to the lower end cover 300 is provided with a second limiting groove 111, and one end of the sliding support assembly 200 is located in the first limiting groove 311, and the other end is located in the second limiting groove 111. By providing the first limiting groove 311 and the second limiting groove 111, the installation convenience of the sliding support assembly 200 can be improved. In addition, the problem of the sliding support assembly 200 moving in the accommodating cavity 600 along the radial direction of the sliding bearing 10 can also be improved.

[0051] Alternatively, if Figure 2 As shown, the orthographic projection of the first limiting groove 311 on the main body 110 is located within the second limiting groove 111. That is to say, the area of ​​the second limiting groove 111 is larger than the area of ​​the first limiting groove 311. Preferably, one end of the second limiting groove 111 is connected to the second flange 130. In this way, on the one hand, the first limiting groove 311 can improve the problem of the sliding support assembly 200 moving in the accommodating cavity 600 along the radial direction of the sliding bearing 10; on the other hand, while improving the convenience of setting the second limiting groove 111, the weight of the upper end cover 100 can also be reduced, thereby reducing the weight of the sliding bearing 10.

[0052] Alternatively, if Figure 6 As shown, the first surface 310 of the lower end cover 300 is further provided with a plurality of first weight-reducing grooves 312, such as Figure 5 As shown, a plurality of second weight-reducing grooves 112 are further provided on the surface of one side of the main body 110 close to the lower end cover 300. Thus, the sliding bearing 10 can be further weight-reduced. Optionally, the first weight-reducing groove 312 and the second weight-reducing groove 112 are both located on a side away from the second flange 130.

[0053] In some embodiments, Figures 2 to 4 As shown, and refer to Figure 5 and Figure 6 The first limiting structure 400 includes at least one first protrusion 410 and at least one second protrusion 420. The first protrusion 410 is located in the first gap 610 and connected to the first flange 120. The second protrusion 420 is located in the first gap 610 and connected to the second surface 320. The surface of the first protrusion 410 is formed by connecting a plurality of planes in sequence, and the surface of the second protrusion 420 is a curved surface.

[0054] This embodiment proposes one of the configurations of the first limiting structure 400 in the sliding bearing 10. At least one first protrusion 410 means that the number of the first protrusions 410 can be one, or two, or more. At least one second protrusion 420 means that the number of the second protrusions 420 can be one, or two, or more. Figure 3 As shown, the first protrusion 410 is disposed on the first flange 120, and the second protrusion 420 is disposed on the second surface 320. When the upper end cover 100 and the lower end cover 300 are assembled, the first protrusion 410 is located below the second protrusion 420, so that the first protrusion 410 and the second protrusion 420 can limit the upper end cover 100 and the lower end cover 300 in the axial direction.

[0055] Furthermore, the surface of the first protrusion 410 is formed by connecting a plurality of planes in sequence, and the surface of the second protrusion 420 is a curved surface. With such a configuration, a person can assemble the upper end cover 100 and the lower end cover 300 by pressing, thereby facilitating the assembly of the upper end cover 100 and the lower end cover 300.

[0056] It should be noted that, in the present embodiment, the surface of the first raised portion 410 is formed by connecting a plurality of planes in sequence. For example, the surface of the first raised portion 410 may be formed by connecting two planes, in which case the cross-sectional shape of the first raised portion 410 is a triangle. Alternatively, the surface of the first raised portion 410 may be formed by connecting three planes. In this case, the cross-sectional shape of the first raised portion 410 is a quadrilateral. Alternatively, the surface of the first raised portion 410 may be formed by connecting more than three planes, etc., which is not limited in the present application. In addition, a rounded corner may be provided between two adjacent planes, which is not limited in the present application.

[0057] In some embodiments, Figure 5 and Figure 6 As shown, there are multiple first protrusions 410, and the multiple first protrusions 410 are circumferentially spaced on the first flange 120. There are multiple second protrusions 420, and the multiple second protrusions 420 are circumferentially spaced on the second surface 320. In this case, each first protrusion 410 can be a triangular prism or a quadrangular prism, etc., and each second protrusion 420 can be a hemispherical sphere.

[0058] Alternatively, in other embodiments, the first protrusion 410 is a first convex strip (not shown in the figure) circumferentially arranged around the first flange 120, and the second protrusion 420 is a second convex strip (not shown in the figure) circumferentially arranged around the second surface 320. Such an arrangement is conducive to improving the convenience of arranging the first protrusion 410 and the second protrusion 420. In this case, the cross section of the first protrusion can be triangular or rectangular, and the cross section of the second protrusion can be arc-shaped.

[0059] In some embodiments, Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the second limiting structure 500 includes a third protrusion 510 and at least one fourth protrusion 520 , the third protrusion 510 is located in the second gap 620 and circumferentially arranged around the second flange 130 , and the fourth protrusion 520 is located in the second gap 620 and arranged on the third surface 330 .

[0060] This embodiment proposes a configuration method of the second limiting structure 500 in the sliding bearing 10. In this embodiment, the third protrusion 510 is one, and the fourth protrusion 520 can be one, or, as Figure 6 As shown, there may be multiple fourth protrusions 520. The third protrusion 510 is circumferentially arranged around the second flange 130, and the fourth protrusion 520 is arranged on the third surface 330. When the upper end cover 100 and the lower end cover 300 are assembled, the third protrusion 510 is located below the fourth protrusion 520, so that the third protrusion 510 and the fourth protrusion 520 can limit the upper end cover 100 and the lower end cover 300 in the axial direction.

[0061] Of course, it is easy to understand that when there is one fourth protrusion 520, the fourth protrusion 520 is arranged around the third surface 330; Figure 6 As shown, when there are multiple fourth protrusions 520, the multiple fourth protrusions 520 are circumferentially spaced apart and arranged on the third surface 330. In this way, the outer side of the sliding bearing 10 can also be limited, and the present application does not limit this.

[0062] Furthermore, in some embodiments, Figure 2 and Figure 4 As shown, the surface of the third protrusion 510 is formed by connecting a plurality of planes in sequence, and the surface of the fourth protrusion 520 is formed by connecting a plurality of planes in sequence. In this way, the anti-detachment ability between the third protrusion 510 and the fourth protrusion 520 is much greater than the anti-detachment ability between the first protrusion 410 and the second protrusion 420. On the one hand, it can ensure that the upper end cover 100 and the lower end cover 300 can be assembled smoothly, and on the other hand, it can also improve the anti-detachment performance between the upper end cover 100 and the lower end cover 300. Optionally, in this embodiment, in the third protrusion 510 and the fourth protrusion 520, a chamfer can also be set between two adjacent planes.

[0063] It is easy to understand that the upper end cover 100 and the lower end cover 300 are clearance-fitted. When assembling, the upper end cover 100 and the lower end cover 300 can be assembled in place on the side away from the central axis L by tilting. At this time, the third protrusion 510 is located below the fourth protrusion 520, so that the third protrusion 510 and the fourth protrusion 520 can limit the outer side of the sliding bearing 10. Then, the upper end cover 100 and the lower end cover 300 are assembled in place on the side close to the central axis L by pressing. In this way, the assembly work of the sliding bearing 10 is completed. Of course, the sliding bearing 10 can also be assembled in other ways, and this application does not limit this.

[0064] In some embodiments, Figure 2 and Figure 3 As shown, the second surface 320 includes a first sub-surface 321 and a second sub-surface 322. The first sub-surface 321 is a stepped surface. The first sub-surface 321 and the first flange 120 are gap-matched to form a first gap 610. The second sub-surface 322 is connected to the first sub-surface 321. The second sub-surface 322 is located below the first sub-surface 321. A plurality of fifth protrusions 3221 are circumferentially spaced apart on the second sub-surface 322 of the lower end cover 300.

[0065] In this embodiment, the second surface 320 includes a first sub-surface 321 and a second sub-surface 322. The first sub-surface 321 is a stepped surface, which can play a certain positioning role for the upper end cover 100, thereby facilitating the assembly convenience between the upper end cover 100 and the lower end cover 300.

[0066] Furthermore, the second sub-surface 322 is provided with a plurality of fifth protrusions 3221 at intervals along the circumferential direction. In the related art, the vehicle body is connected to the upper end cover 100 through a vehicle body support, and a part of the structure of the vehicle body support will extend to the mounting hole 10a of the sliding bearing 10. At this time, the vehicle body support will produce a clearance fit with the second sub-surface 322. When the vehicle body is subjected to a lateral force, the vehicle body support will contact the second sub-surface 322, thereby generating contact noise. In this embodiment, by providing the fifth protrusion 3221, the matching area between the second sub-surface 322 and the external structure can be reduced, thereby reducing the contact area between the second sub-surface 322 and the external structure, thereby improving the friction noise caused by the lateral force of the sliding bearing 10.

[0067] In some embodiments, Figure 4 As shown, the first surface 310 of the lower end cover 300 is provided with a sealing installation groove 313, and the sealing installation groove 313 is located outside the first surface 310. The sliding bearing 10 also includes a sealing member 700, which is arranged in the sealing installation groove 313, and the sealing lip of the sealing member 700 abuts against the second flange 130.

[0068] Since the upper end cover 100 and the lower end cover 300 are clearance-matched, external dust can easily enter the interior of the accommodating cavity 600 through the second gap 620 on the outside, thereby affecting the performance of the sliding bearing assembly 200. In this embodiment, a sealing installation groove 313 is provided on the outside of the first surface 310 of the lower end cover 300, and the sealing member 700 is provided in the sealing installation groove 313, and the sealing lip edge of the sealing member 700 abuts against the second flange 130, so that the sealing member 700 can seal the second gap 620 to prevent external dust from entering, thereby facilitating the improvement of the cleaning performance and reliability of the sliding bearing 10.

[0069] In the second aspect, the present application provides a vehicle, comprising a vehicle body (not shown in the figure), a suspension (not shown in the figure), and the sliding bearing 10 described in the first aspect. The vehicle body is connected to the upper surface of the upper end cover 100 through a vehicle body support, and the suspension is connected to the lower surface of the lower end cover 300.

[0070] The vehicle of the present application uses the sliding bearing 10 described in the first aspect to connect the vehicle body and the suspension, thereby improving the problem of axial separation between the upper end cover 100 and the lower end cover 300 of the sliding bearing 10, thereby facilitating the improvement of the reliability of the sliding bearing 10 and the vehicle.

[0071] Optionally, the suspension may be, for example, an air spring suspension, and a piston of the air spring suspension is connected to the lower surface of the lower end cover 300. The vehicle body may include, for example, a vehicle body body and a vehicle body support, and the vehicle body body is connected to the upper surface of the upper end cover 100 via the vehicle body support.

[0072] Optionally, the vehicle may be a new energy vehicle, a fuel vehicle, etc., which is not limited in this application.

[0073] The above contents are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A sliding bearing, characterized in that: include: Upper end cover; Sliding bearing assembly; A lower end cover, wherein the lower end cover is clearance-matched with the upper end cover to form an accommodating cavity for accommodating the sliding bearing assembly between the lower end cover and the upper end cover; as well as A first limiting structure and a second limiting structure, wherein the first limiting structure and the second limiting structure are both arranged between the upper end cover and the lower end cover, and are used to axially limit the upper end cover and the lower end cover; Wherein, the sliding bearing has a central axis, and the distance between the first limiting structure and the central axis is smaller than the distance between the second limiting structure and the central axis.

2. The sliding bearing according to claim 1, characterized in that: The first limiting structure includes a first protrusion and a second protrusion that cooperate with each other, one of the first protrusion and the second protrusion is arranged on the upper end cover, and the other is arranged on the lower end cover; A surface of at least one of the first protrusion and the second protrusion is a curved surface.

3. The sliding bearing according to claim 1, characterized in that: The upper end cover is annular, and comprises a main body, a first flange provided on a side of the main body close to the central axis, and a second flange provided on a side of the main body away from the central axis; The lower end cover is annular, and has a first surface opposite to the main body, a second surface opposite to the first flange, and a third surface opposite to the second flange; The first limiting structure is located in a first gap formed between the second surface and the first flange, and the second limiting structure is located in a second gap formed between the third surface and the second flange.

4. The sliding bearing according to claim 3, characterized in that: The first limiting structure includes at least one first protrusion and at least one second protrusion, the first protrusion is connected to the first flange, and the second protrusion is connected to the second surface; The surface of the first protrusion is formed by connecting a plurality of planes in sequence, and the surface of the second protrusion is a curved surface.

5. The sliding bearing according to claim 4, characterized in that: There are a plurality of first protrusions, and the plurality of first protrusions are circumferentially spaced apart on the first flange; there are a plurality of second protrusions, and the plurality of second protrusions are circumferentially spaced apart on the second surface; Alternatively, the first protrusion is a first convex strip circumferentially arranged around the first flange, and the second protrusion is a second convex strip circumferentially arranged around the second surface.

6. The sliding bearing according to claim 3, characterized in that: The second limiting structure includes a third protrusion and at least one fourth protrusion. The third protrusion is circumferentially arranged around the second flange, and the fourth protrusion is arranged on the third surface.

7. The sliding bearing according to claim 3, characterized in that: The second surface comprises: a first sub-surface, the first sub-surface being a stepped surface, the first sub-surface cooperating with the first flange gap to form the first gap; and The second sub-surface is connected to the first sub-surface, the second sub-surface is located below the first sub-surface, and a plurality of fifth protrusions are arranged on the second sub-surface at intervals along the circumferential direction.

8. The sliding bearing according to claim 3, characterized in that: The first surface is provided with a sealing installation groove, and the sealing installation groove is located on the outer side of the first surface; The sliding bearing further comprises a sealing member, wherein the sealing member is arranged in the sealing installation groove, and a sealing lip of the sealing member abuts against the second flange.

9. The sliding bearing according to claim 3, characterized in that: The first surface is provided with a first limiting groove, and a side surface of the main body close to the lower end cover is provided with a second limiting groove. One end of the sliding support assembly is located in the first limiting groove, and the other end is located in the second limiting groove.

10. A vehicle, characterized in that: comprising a vehicle body, a suspension and a sliding bearing as claimed in any one of claims 1 to 9; The vehicle body is connected to the upper surface of the upper end cover, and the suspension is connected to the lower surface of the lower end cover.

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