Sealing ring, bearing and vehicle

Abstract

The embodiment of the utility model provides a sealing ring, a bearing and a vehicle. The sealing ring comprises an annular bag body and a plurality of elastic pieces. An annular cavity is formed in the annular bag body; the multiple elastic pieces are arranged in the annular cavity in the circumferential direction of the annular cavity at intervals, and the elastic pieces can elastically deform in the radial direction of the annular cavity. The plurality of elastic pieces are arranged in the annular cavity of the annular bag body and can elastically deform along the radial direction of the annular cavity, so that the pressure of the sealing ring acting on the inner ring and / or the outer ring of the bearing can be adaptively reduced, the friction resistance between the sealing ring and the inner ring and / or the outer ring is reduced, the abrasion of the sealing ring is further reduced, and the service life of the sealing ring is prolonged. And the sealing performance of the bearing is improved.

Description

Technical Field

[0001] The present application belongs to the field of vehicle technology, and specifically relates to a sealing ring, a bearing and a vehicle. Background Art

[0002] Bearings are important components that connect the rotating shaft and the shaft seat. They usually need to be sealed to prevent foreign matter from entering the bearing and the lubricating oil inside the bearing from overflowing.

[0003] In the prior art, a rubber sealing ring is usually arranged between the outer ring and the inner ring of the bearing, and the rubber sealing ring contacts the inner ring and the outer ring respectively, so as to achieve the sealing of the bearing. However, due to the low elasticity of the rubber sealing ring, the pressure exerted by the rubber sealing ring on the inner ring and / or the outer ring is relatively large, which will lead to a large friction resistance between the inner ring and / or the outer ring and the rubber sealing ring, causing the rubber sealing ring to be easily worn, thereby affecting the sealing performance of the bearing. Utility Model Content

[0004] The present application aims to provide a sealing ring, a bearing and a vehicle to solve the problem that the friction resistance between the existing sealing ring and the inner ring and / or outer ring of the bearing is relatively large, causing the sealing ring to be easily worn and affecting the sealing performance of the bearing.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, the present application discloses a sealing ring, the sealing ring comprising: an annular capsule and a plurality of elastic members;

[0007] The annular capsule has an annular chamber;

[0008] A plurality of elastic members are arranged in the annular chamber at intervals along the circumferential direction of the annular chamber, and the elastic members can be elastically deformed along the radial direction of the annular chamber.

[0009] Optionally, the sealing ring further comprises a first support ring, wherein the first support ring is disposed in the annular chamber and extends along the circumference of the annular chamber;

[0010] The elastic member is connected to the first supporting ring, and at least a portion of the elastic member abuts against the bladder wall of the annular bladder.

[0011] Optionally, the elastic member is an arc-shaped spring piece.

[0012] Optionally, along the extension direction of the arc-shaped elastic piece, the arc-shaped elastic piece includes a fixed section, an abutting section and a free section which are arranged in sequence, and the fixed section is arranged close to the first supporting ring;

[0013] The fixing section is fixedly connected to the first supporting ring;

[0014] The abutting section abuts against the capsule wall of the annular capsule;

[0015] The free section is suspended in the annular chamber.

[0016] Optionally, the annular capsule comprises a first circumferential wall and a second circumferential wall spaced apart along the radial direction of the annular chamber, wherein the first circumferential wall is close to the center of the annular capsule;

[0017] The first supporting ring is connected to the second peripheral wall;

[0018] At least a portion of the elastic member abuts against the first peripheral wall.

[0019] Optionally, a first wear-resistant layer is provided on a side of the first peripheral wall facing away from the elastic member.

[0020] Optionally, the annular capsule comprises a first circumferential wall and a second circumferential wall spaced apart along the radial direction of the annular chamber, wherein the first circumferential wall is close to the center of the annular capsule;

[0021] The first supporting ring is connected to the first peripheral wall;

[0022] At least a portion of the elastic member abuts against the second peripheral wall.

[0023] Optionally, the sealing ring further includes a third supporting ring, wherein the third supporting ring is connected to a side of the first peripheral wall facing away from the first supporting ring.

[0024] Optionally, a second wear-resistant layer is provided on a side of the second peripheral wall facing away from the elastic member.

[0025] Optionally, the annular capsule comprises a first circumferential wall and a second circumferential wall spaced apart along the radial direction of the annular chamber, wherein the first circumferential wall is close to the center of the annular capsule;

[0026] The first supporting ring is disposed between the first peripheral wall and the second peripheral wall, and there is a gap between the first supporting ring and the first peripheral wall and the second peripheral wall;

[0027] The elastic member includes a first elastic member and a second elastic member, the first elastic member is connected to a side of the first support ring close to the first peripheral wall, and at least a portion of the first elastic member abuts against the first peripheral wall; the second elastic member is connected to a side of the first support ring close to the second peripheral wall, and at least a portion of the second elastic member abuts against the second peripheral wall.

[0028] Optionally, a first wear-resistant layer and a second wear-resistant layer are respectively provided on the side of the first peripheral wall and the side of the second peripheral wall facing away from the elastic member.

[0029] In a second aspect, the present application further discloses a bearing, the bearing comprising:

[0030] An inner ring and an outer ring are arranged at intervals in the radial direction, and the inner ring and the outer ring rotate relative to each other;

[0031] And the sealing ring described in any one of the above items, wherein the sealing ring is arranged between the inner ring and the outer ring, and the sealing ring is connected to the inner ring and the outer ring respectively.

[0032] In a third aspect, the present application also discloses a vehicle, comprising the above-mentioned bearing.

[0033] In the embodiment of the present application, the sealing ring includes: an annular capsule and a plurality of elastic members; the annular capsule has an annular chamber; the plurality of elastic members are arranged in the annular chamber at intervals along the circumference of the annular chamber, and the elastic members can be elastically deformed along the radial direction of the annular chamber. In this way, on the one hand, since the annular capsule is provided, during the use of the bearing, the annular capsule can keep the sealing ring in contact with the inner ring and the outer ring of the bearing through its own elastic deformation, thereby achieving the sealing of the bearing. On the other hand, since a plurality of elastic members are provided, the plurality of elastic members are arranged at intervals along the circumference of the annular chamber of the annular capsule, and the elastic members can be elastically deformed along the radial direction of the annular chamber, thereby adaptively reducing the pressure of the sealing ring on the inner ring and / or the outer ring of the bearing, so that the friction resistance between the sealing ring and the inner ring and / or the outer ring can be reduced, thereby reducing the wear of the sealing ring, which is conducive to improving the sealing performance of the bearing.

[0034] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0036] Figure 1 This is a schematic diagram of the structure of a sealing ring provided in Example 1 of the present application;

[0037] Figure 2 It is an exploded schematic diagram of a sealing ring provided in Example 1 of the present application;

[0038] Figure 3 is a side view of a sealing ring provided in Example 1 of the present application;

[0039] Figure 4 This is one of the cross-sectional views of a sealing ring provided in Example 1 of the present application;

[0040] Figure 5 This is a second cross-sectional view of a sealing ring provided in the first embodiment of the present application;

[0041] Figure 6 is a cross-sectional view of a sealing ring provided in Example 1 of the present application;

[0042] Figure 7 yes Figure 6 A partial enlarged view of the middle A;

[0043] Figure 8 is a cross-sectional view of a sealing ring provided in Example 2 of the present application;

[0044] Fig. 9 is a cross-sectional view of a sealing ring provided in Example 3 of the present application;

[0045] Fig.10 It is a structural schematic diagram of a bearing provided in an embodiment of the present application.

[0046] Figure numerals: 1. Sealing ring, 11. Annular capsule, 111. Annular chamber, 112. First circumferential wall, 113. Second circumferential wall, 114. Side wall, 12. Elastic member, 121. First elastic member, 122. Second elastic member, 13. First support ring, 14. Second support ring, 15. First wear-resistant layer, 16. Third support ring, 17. Second wear-resistant layer, 2. Inner ring, 3. Outer ring. DETAILED DESCRIPTION

[0047] The embodiments of the utility model will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0048] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this utility model, unless otherwise specified, "multiple" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] An embodiment of the present application provides a sealing ring, and the sealing ring of the present application is described in detail below with reference to the accompanying drawings.

[0052] Reference Figure 1 , showing a schematic diagram of the structure of a sealing ring provided in Example 1 of the present application, referring to Figure 2 , shows an exploded schematic diagram of a sealing ring provided in Example 1 of the present application, referring to Figure 3 , showing a side view of a sealing ring provided in Example 1 of the present application, referring to Figures 4 to 5 , showing a cross-sectional view of a sealing ring provided in Example 1 of the present application, referring to Figure 6 , showing a cross-sectional view of a sealing ring provided in Example 1 of the present application, referring to Figure 7 , showing Figure 6 The enlarged view of the part at A in the middle, refer to Figure 8 , showing a cross-sectional view of a sealing ring provided in Example 2 of the present application, referring to Fig. 9 , showing a cross-sectional view of a sealing ring provided in Example 3 of the present application.

[0053] like Figure 1 to Figure 2 As shown, the present application provides a sealing ring 1, which includes: an annular sac 11 and a plurality of elastic members 12; an annular chamber 111 is provided in the annular sac 11; a plurality of elastic members 12 are arranged in the annular chamber 111 at circumferential intervals along the annular chamber 111, and the elastic members 12 can be elastically deformed along the radial direction of the annular chamber 111.

[0054] In the embodiment of the present application, the sealing ring 1 comprises: an annular capsule 11 and a plurality of elastic members 12; the annular capsule 11 has an annular chamber 111; the plurality of elastic members 12 are arranged in the annular chamber 111 at intervals along the circumference of the annular chamber 111, and the elastic members 12 can be elastically deformed along the radial direction of the annular chamber 111. Thus, on the one hand, due to the provision of the annular capsule 11, during the use of the bearing, the annular capsule 11 can keep the sealing ring 1 in contact with the inner ring 2 and the outer ring 3 of the bearing through its own elastic deformation, thereby achieving the sealing of the bearing. On the other hand, since a plurality of elastic members 12 are provided, the plurality of elastic members 12 are arranged at circumferential intervals along the annular chamber 111 of the annular sac 11, and the elastic members 12 can be elastically deformed along the radial direction of the annular chamber 111, thereby adaptively reducing the pressure of the sealing ring 1 on the inner ring 2 and / or outer ring 3 of the bearing, thereby reducing the friction resistance between the sealing ring 1 and the inner ring 2 and / or outer ring 3, thereby reducing the wear of the sealing ring 1, which is beneficial to improving the sealing performance of the bearing.

[0055] It should be noted that the annular sac 11 of the embodiment of the present application refers to a sac-like structure with an annular appearance and elastic deformation. When the pressure exerted by the sealing ring 1 on the inner ring 2 and / or the outer ring 3 of the bearing is relatively large, the annular sac 11 can shrink adaptively. When the sealing ring 1 is about to separate from the inner ring 2 and / or the outer ring 3 of the bearing, the annular sac 11 can expand adaptively, so that the sealing ring 1 always maintains contact with the inner ring 2 and the outer ring 3 of the bearing, which is beneficial to improving the sealing performance of the bearing.

[0056] In practical applications, in order to make the annular capsule 11 have better elasticity, gas is usually filled into the annular chamber 111 of the annular capsule 11. According to tests, when the air pressure of the annular chamber 111 reaches 20-30PS I, the annular capsule 11 can have better elasticity, so that the annular capsule 11 can keep in contact with the outer ring 3 and / or the inner ring 2 of the bearing, thereby achieving the sealing of the bearing. In addition, the material of the annular capsule 11 of the embodiment of the present application includes but is not limited to rubber, plastic or other materials with good air tightness and good elasticity and toughness, which are not limited here, and those skilled in the art can choose according to their needs. In one embodiment, the annular capsule 11 is made of rubber.

[0057] In practical applications, since each elastic member 12 is independent of each other, when affected by external force, the pressure of the sealing ring 1 on the bearing outer ring 3 and / or inner ring 2 can be adaptively reduced through the different degrees of radial elastic deformation of each elastic member 12. In this way, as the number of elastic members 12 increases, the adjustment accuracy of the pressure of the sealing ring 1 on the bearing inner ring 2 and / or outer ring 3 is higher, but the manufacturing cost of the sealing ring 1 is increased. Therefore, the embodiment of the present application does not limit the number of elastic members 12, and those skilled in the art can adjust it as needed.

[0058] like Figures 3 to 5 The sealing ring 1 also includes a first support ring 13, which is arranged in the annular chamber 111 and extends along the circumference of the annular chamber 111; the elastic member 12 is connected to the first support ring 13, and at least part of the elastic member 12 abuts against the wall of the annular capsule 11.

[0059] In the embodiment of the present application, on the one hand, since the first support ring 13 extending along the circumference of the annular chamber 111 is provided, the elastic member 12 is connected to the first support ring 13, so that the elastic member 12 can be fixed and supported, so that the elastic member 12 can be elastically deformed stably along the radial direction of the annular chamber 111. On the other hand, since at least part of the elastic member 12 abuts against the capsule wall of the annular capsule 11, the force acting on the annular capsule 11 by the outer ring 3 and / or the inner ring 2 of the bearing can be timely transmitted to the elastic member 12, and the pressure acting on the outer ring 3 and / or the inner ring 2 of the bearing by the annular capsule 11 can be adaptively reduced through the elastic deformation of the elastic member 12.

[0060] It should be noted that the material of the first support ring 13 of the embodiment of the present application includes but is not limited to metal, ceramic, hard rubber or other materials with good stability and not easy to deform. The material of the elastic member 12 of the embodiment of the present application includes but is not limited to metal, plastic or other materials with good elasticity and toughness. The embodiment of the present application does not limit the materials of the first support ring 13 and the elastic member 12, and those skilled in the art can adjust them as needed. In one embodiment, the first support ring 13 is made of 304 stainless steel, and the elastic member 12 is made of spring steel.

[0061] In some optional embodiments of the present application, the elastic member 12 is an arc-shaped spring sheet.

[0062] Specifically, along the extension direction of the arc-shaped spring piece, the arc-shaped spring piece includes a fixed section, an abutment section and a free section which are arranged in sequence, the fixed section is arranged close to the first support ring 13; the fixed section is fixedly connected to the first support ring 13; the abutment section abuts against the sac wall of the annular sac 11; the free section is suspended in the annular chamber 111.

[0063] In the embodiment of the present application, since an arc-shaped spring piece is provided, the arc-shaped spring piece includes a fixed section, an abutting section and a free section which are provided in sequence. In this way, the fixing and support of the arc-shaped spring piece can be achieved by the fixed connection between the fixed section and the first support ring 13. The abutment between the abutting section and the wall of the annular capsule 11 can support the annular capsule 11, and at the same time, the force of the outer ring 3 and / or the inner ring 2 of the bearing acting on the annular capsule 11 is timely transmitted to the arc-shaped spring piece, and the pressure of the annular capsule 11 acting on the outer ring 3 and / or the inner ring 2 of the bearing is adaptively reduced by the elastic deformation of the arc-shaped spring piece. By providing a free section, and the free section is suspended in the annular chamber 111, the problem of the arc-shaped spring piece scratching or even cutting the wall of the annular capsule 11 can be avoided, which is conducive to improving the service life of the sealing ring 1.

[0064] It should be noted that the fixed connection method between the fixed section and the first support ring 13 in the embodiment of the present application includes but is not limited to bonding, welding or other connection methods, which are not limited here. In addition, the embodiment of the present application does not limit the specific shape of the arc-shaped spring piece, and those skilled in the art can choose it according to their needs. Figure 4 As shown, in one embodiment, the arc-shaped spring piece is a C-shaped spring piece, and the center line connecting the abutting section and the fixed section of the C-shaped spring piece passes through the center of the C-shaped spring piece, so that the circumferential force of the C-shaped spring piece is balanced. In addition, in order to prevent the C-shaped spring piece from scratching or even cutting the annular capsule 11 along the axial sides of the annular chamber 111, the C-shaped spring piece of the embodiment of the present application respectively reserves a certain gap with the capsule wall of the annular capsule 11 along the axial sides of the annular chamber 111. It can be understood that when the C-shaped spring piece is processed relatively smoothly along the axial sides of the annular chamber 111, it is not necessary to reserve a gap, even if the C-shaped spring piece abuts against the capsule wall of the annular capsule 11 along the axial sides of the annular chamber 111.

[0065] In practical applications, the elastic member 12 can be arranged on one side of the first support ring 13, that is, the elastic member 12 is arranged on the inner side of the first support ring 13, or the elastic member 12 is arranged on the outer side of the first support ring 13; the elastic member 12 can also be arranged on both sides of the first support ring 13, that is, the elastic member 12 is arranged on both the inner side and the outer side of the first support ring 13. Among them, the inner side is the side of the first support ring 13 close to its center, and the outer side refers to the side of the first support ring 13 away from its center. The above three settings are described in detail below in conjunction with the accompanying drawings.

[0066] Embodiment 1

[0067] like Figure 6 to Figure 7 As shown, the annular capsule 11 includes a first circumferential wall 112 and a second circumferential wall 113 arranged at radial intervals along the annular chamber 111, the first circumferential wall 112 is close to the center of the annular capsule 11; the first support ring 13 is connected to the second circumferential wall 113; at least part of the elastic member 12 abuts against the first circumferential wall 112.

[0068] In the embodiment of the present application, the first support ring 13 is connected to the second peripheral wall 113, and at least part of the elastic member 12 is in contact with the first peripheral wall 112. That is, the elastic member 12 is located on the inner side of the first support ring 13. This structure is suitable for the application scenario where the outer ring 3 of the bearing is fixed and the inner ring 2 rotates relative to the outer ring 3. In this way, when the bearing is in use, that is, when the inner ring 2 rotates relative to the outer ring 3, the annular capsule 11 maintains contact with the inner ring 2 of the bearing through its own elastic deformation, and the elastic deformation of the elastic member 12 is adaptively reduced to reduce the pressure of the first peripheral wall 112 on the inner ring 2 of the bearing, thereby reducing the wear of the sealing ring 1, which is conducive to improving the sealing performance of the bearing.

[0069] It should be noted that the connection method between the first support ring 13 and the second peripheral wall 113 in the embodiment of the present application includes but is not limited to abutment, bonding or other connection methods, which are not limited here and those skilled in the art can choose according to actual needs.

[0070] In some optional embodiments of the present application, the sealing ring 1 further includes a second support ring 14 , and the second support ring 14 is connected to a side of the second peripheral wall 113 facing away from the first support ring 13 .

[0071] In the embodiment of the present application, since the second support ring 14 is provided, the second support ring 14 is connected to the side of the second peripheral wall 113 away from the first support ring 13. In this way, on the one hand, the second support ring 14 can play a role in supporting the annular capsule 11, which is conducive to improving the overall structural strength of the sealing ring 1; on the other hand, the sealing ring 1 can be reliably connected to the bearing through the fixed connection between the second support ring 14 and the outer ring 3, thereby achieving the sealing of the bearing.

[0072] It should be noted that the material of the second support ring 14 includes but is not limited to metal, rubber, plastic or other materials with low surface roughness, which is not limited here and can be adjusted by those skilled in the art as needed. In one embodiment, the second support ring 14 is made of high carbon chromium bearing steel.

[0073] In some optional embodiments of the present application, a first wear-resistant layer 15 is provided on a side of the first peripheral wall 112 facing away from the elastic member 12 .

[0074] In the embodiment of the present application, the first wear-resistant layer 15 is provided on the side of the first circumferential wall 112 facing away from the elastic member 12. Thus, during the use of the bearing, i.e., during the rotation of the inner ring 2 relative to the outer ring 3, the first wear-resistant layer 15 can prevent the first circumferential wall 112 of the annular capsule 11 from directly contacting the inner ring 2, thereby effectively preventing the wear of the annular capsule 11, which is beneficial to improving the wear resistance of the sealing ring 1, and further improving the service life of the sealing ring 1.

[0075] It should be noted that the surface roughness of the first wear-resistant layer 15 of the embodiment of the present application is much smaller than the surface roughness of the annular capsule 11, so that the friction resistance between the sealing ring 1 and the inner ring 2 of the bearing can be greatly reduced, thereby reducing the wear of the sealing ring 1, which is beneficial to improving the service life of the sealing ring 1. Among them, the material of the first wear-resistant layer 15 includes but is not limited to metals, such as nickel and chromium; and non-metals, such as graphite, ceramics and other materials. The first wear-resistant layer 15 can be a wear-resistant layer directly sprayed on the first peripheral wall 112 by sputtering, evaporation or other coating methods, or it can be a finished wear-resistant layer fixed to the first peripheral wall 112 by bonding or other fixed connection methods. The embodiment of the present application does not limit the material and processing technology of the first wear-resistant layer 15, and those skilled in the art can choose according to their needs. According to the test, the surface roughness of the first wear-resistant layer 15 can usually reach 10-30nm, thereby greatly reducing the friction resistance between the sealing ring 1 and the inner ring 2 of the bearing.

[0076] Embodiment 2

[0077] like Figure 8 As shown, the annular capsule 11 includes a first circumferential wall 112 and a second circumferential wall 113 arranged at radial intervals along the annular chamber 111, the first circumferential wall 112 is close to the center of the annular capsule 11; the first support ring 13 is connected to the first circumferential wall 112; at least part of the elastic member 12 abuts against the second circumferential wall 113.

[0078] In the embodiment of the present application, the first support ring 13 is connected to the first peripheral wall 112, and at least part of the elastic member 12 is in contact with the second peripheral wall 113. That is, the elastic member 12 is located on the outside of the first support ring 13. This structure is suitable for the application scenario where the inner ring 2 of the bearing is fixed and the outer ring 3 rotates relative to the inner ring 2. In this way, when the bearing is in use, that is, the outer ring 3 rotates relative to the inner ring 2, the annular capsule 11 maintains contact with the outer ring 3 of the bearing through its own elastic deformation, and the elastic deformation adaptability of the elastic member 12 reduces the pressure of the second peripheral wall 113 on the outer ring 3 of the bearing, thereby reducing the wear of the sealing ring 1, which is conducive to improving the sealing performance of the bearing.

[0079] It should be noted that the connection method between the first support ring 13 and the first peripheral wall 112 in the embodiment of the present application includes but is not limited to abutment, bonding or other connection methods, which are not limited here and those skilled in the art can choose according to actual needs.

[0080] In some optional embodiments of the present application, the sealing ring 1 further includes a third support ring 16 , and the third support ring 16 is connected to a side of the first peripheral wall 112 facing away from the first support ring 13 .

[0081] In the embodiment of the present application, since the third support ring 16 is provided, the third support ring 16 is connected to the side of the first peripheral wall 112 away from the first support ring 13. In this way, on the one hand, the third support ring 16 can play a role in supporting the annular capsule 11, which is conducive to improving the overall structural strength of the sealing ring 1; on the other hand, the sealing ring 1 can be reliably connected to the bearing through the fixed connection between the third support ring 16 and the inner ring 2, thereby achieving the sealing of the bearing.

[0082] It should be noted that the material of the third support ring 16 includes but is not limited to metal, rubber, plastic or other materials with low surface roughness, which is not limited here and can be adjusted by those skilled in the art as needed. In one embodiment, the third support ring 16 is made of high carbon chromium bearing steel.

[0083] In some optional embodiments of the present application, a second wear-resistant layer 17 is provided on a side of the second peripheral wall 113 facing away from the elastic member 12 .

[0084] In the embodiment of the present application, the second wear-resistant layer 17 is provided on the side of the second circumferential wall 113 facing away from the elastic member 12. In this way, during the use of the bearing, that is, during the rotation of the outer ring 3 relative to the inner ring 2, the second wear-resistant layer 17 can prevent the second circumferential wall 113 of the annular capsule 11 from directly contacting the outer ring 3, thereby effectively avoiding the wear of the annular capsule 11, which is beneficial to improving the wear resistance of the sealing ring 1, and further improving the service life of the sealing ring 1.

[0085] It should be noted that the surface roughness of the second wear-resistant layer 17 of the embodiment of the present application is much smaller than the surface roughness of the annular capsule 11, so that the friction resistance between the sealing ring 1 and the bearing outer ring 3 can be greatly reduced, thereby reducing the wear of the sealing ring 1, which is beneficial to improving the service life of the sealing ring 1. Among them, the material of the second wear-resistant layer 17 includes but is not limited to metals, such as nickel and chromium; and non-metals, such as graphite, ceramics and other materials. The second wear-resistant layer 17 can be a wear-resistant layer directly sprayed on the second peripheral wall 113 by sputtering, evaporation or other coating methods, or it can be a finished wear-resistant layer fixed to the second peripheral wall 113 by bonding or other fixed connection methods. The embodiment of the present application does not limit the material and processing technology of the second wear-resistant layer 17, and those skilled in the art can choose according to their needs. According to the test, the surface roughness of the second wear-resistant layer 17 can usually reach 10-30nm, thereby greatly reducing the friction resistance between the sealing ring 1 and the bearing inner ring 2.

[0086] Embodiment 3

[0087] like Fig. 9As shown, the annular capsule 11 includes a first circumferential wall 112 and a second circumferential wall 113 arranged at intervals along the radial direction of the annular chamber 111, and the first circumferential wall 112 is close to the center of the annular capsule 11; the first support ring 13 is arranged between the first circumferential wall 112 and the second circumferential wall 113, and there is a gap between the first support ring 13 and the first circumferential wall 112 and the second circumferential wall 113; the elastic member 12 includes a first elastic member 121 and a second elastic member 122, the first elastic member 121 is connected to a side of the first support ring 13 close to the first circumferential wall 112, and at least a part of the first elastic member 121 abuts against the first circumferential wall 112; the second elastic member 122 is connected to a side of the first support ring 13 close to the second circumferential wall 113, and at least a part of the second elastic member 122 abuts against the second circumferential wall 113.

[0088] In the embodiment of the present application, the elastic member 12 includes a first elastic member 121 and a second elastic member 122, and the first elastic member 121 is connected to the side of the first support ring 13 close to the first peripheral wall 112 and abuts against the first peripheral wall 112, and the second elastic member 122 is connected to the side of the second support ring 14 close to the second peripheral wall 113 and abuts against the second peripheral wall 113. That is, the elastic member 12 is provided on both the inner and outer sides of the first support ring 13, and this structure is suitable for the application scenario where the inner ring 2 and the outer ring 3 of the bearing are both rotating. In this way, when the bearing is used, that is, the inner ring 2 and the outer ring 3 rotate relative to each other, the annular capsule 11 maintains contact with the inner ring 2 and the outer ring 3 of the bearing through its own elastic deformation, and the elastic deformation adaptability of the elastic member 12 reduces the pressure of the first peripheral wall 112 and the second peripheral wall 113 on the inner ring 2 and the outer ring 3 of the bearing, thereby reducing the wear of the sealing ring 1, which is conducive to improving the sealing performance of the bearing. It should be noted that, in one embodiment, the first elastic member 121 and the second elastic member 122 are both C-shaped spring pieces, and the C-shaped spring piece has an opening. The opening direction of the C-shaped spring piece as the first elastic member 121 and the C-shaped spring piece as the second elastic member 122 can be consistent, such as Fig. 9 As shown, they may also be inconsistent, which is not limited here, and those skilled in the art can adjust according to actual needs.

[0089] In some optional embodiments of the present application, the first circumferential wall 112 and the second circumferential wall 113 are respectively provided with a first wear-resistant layer 15 and a second wear-resistant layer 17 on the side facing away from the elastic member 12. Specifically, the first circumferential wall 112 is provided with a first wear-resistant layer 15 on the side facing away from the first elastic member 121, and the second circumferential wall 113 is provided with a second wear-resistant layer 17 on the side facing away from the second elastic member 122.

[0090] In the embodiment of the present application, the first circumferential wall 112 and the second circumferential wall 113 are respectively provided with the first wear-resistant layer 15 and the second wear-resistant layer 17. In this way, during the use of the bearing, that is, during the relative rotation of the inner ring 2 and the outer ring 3, the first circumferential wall 112 and the second circumferential wall 113 of the annular capsule 11 can be prevented from directly contacting with the inner ring 2 and the outer ring 3, thereby effectively avoiding the wear of the annular capsule 11, which is beneficial to improving the wear resistance of the sealing ring 1, and further improving the service life of the sealing ring 1.

[0091] In practical applications, when the inner ring 2 and the outer ring 3 of the bearing are both rotating, an annular groove is provided at the corresponding position of the sealing ring 1 on the inner ring 2 and the outer ring 3 of the bearing, and the sealing ring 1 is arranged in the annular groove, so as to realize the axial positioning of the sealing ring 1 and prevent the sealing ring 1 from being separated during the use of the bearing. The annular capsule 11 also includes two side walls 114 arranged at intervals along the axial direction, and the two side walls 114 are both located between the first peripheral wall 112 and the second peripheral wall 113. When the sealing ring 1 is arranged in the annular groove, the side wall 114 of the annular capsule 11 is usually also provided with a wear-resistant layer to reduce the wear of the side wall 114.

[0092] It should be noted that the surface roughness of the first wear-resistant layer 15 and the second wear-resistant layer 17 in the embodiment of the present application is much smaller than the surface roughness of the annular capsule 11, so that the friction resistance between the sealing ring 1 and the outer ring 3 and the inner ring 2 of the bearing can be greatly reduced, thereby reducing the wear of the sealing ring 1, which is beneficial to improving the service life of the sealing ring 1. Among them, the materials of the first wear-resistant layer 15 and the second wear-resistant layer 17 include but are not limited to metals, such as nickel and chromium; non-metals, such as graphite, ceramics, etc. The first wear-resistant layer 15 and the second wear-resistant layer 17 can be wear-resistant layers directly sprayed on the first peripheral wall 112 and the second peripheral wall 113 by sputtering, evaporation or other coating methods, or they can be finished wear-resistant layers fixed on the first peripheral wall 112 and the second peripheral wall 113 by bonding or other fixed connection methods. The embodiment of the present application does not limit the materials and processing technology of the first wear-resistant layer 15 and the second wear-resistant layer 17, and those skilled in the art can choose according to needs. According to tests, the surface roughness of the first wear-resistant layer 15 and the second wear-resistant layer 17 can generally reach 10-30 nm, thereby greatly reducing the friction resistance between the sealing ring 1 and the outer ring 3 and the inner ring 2 of the bearing.

[0093] In summary, the sealing ring provided in the embodiment of the present application has at least the following advantages:

[0094] In the embodiment of the present application, the sealing ring includes: an annular capsule and a plurality of elastic members; the annular capsule has an annular chamber; the plurality of elastic members are arranged in the annular chamber at intervals along the circumference of the annular chamber, and the elastic members can be elastically deformed along the radial direction of the annular chamber. In this way, on the one hand, since the annular capsule is provided, during the use of the bearing, the annular capsule can keep the sealing ring in contact with the inner ring and the outer ring of the bearing through its own elastic deformation, thereby achieving the sealing of the bearing. On the other hand, since a plurality of elastic members are provided, the plurality of elastic members are arranged at intervals along the circumference of the annular chamber of the annular capsule, and the elastic members can be elastically deformed along the radial direction of the annular chamber, thereby adaptively reducing the pressure of the sealing ring on the inner ring and / or the outer ring of the bearing, so that the friction resistance between the sealing ring and the inner ring and / or the outer ring can be reduced, thereby reducing the wear of the sealing ring, which is conducive to improving the sealing performance of the bearing.

[0095] Reference Fig.10 , shows a structural schematic diagram of a bearing provided in an embodiment of the present application, such as Fig.10 As shown, an embodiment of the present application also provides a bearing, the bearing comprising: an inner ring 2 and an outer ring 3 arranged at intervals along the radial direction, the inner ring 2 and the outer ring 3 rotate relative to each other; and a sealing ring 1 of any of the above embodiments, the sealing ring 1 is arranged between the inner ring 2 and the outer ring 3, and the sealing ring 1 is connected to the inner ring 2 and the outer ring 3 respectively.

[0096] In the embodiment of the present application, since a sealing ring 1 is provided between the inner ring 2 and the outer ring 3 of the bearing, the sealing ring 1 is connected to the inner ring 2 and the outer ring 3 respectively, so that the sealing of the bearing can be achieved. In one embodiment, the inner ring 2 of the bearing is fixed and the outer ring 3 rotates relative to the inner ring 2. At this time, the sealing ring 1 is fixedly connected to the inner ring 2 and is in sealing contact with the outer ring 3 to achieve the sealing of the bearing. In another embodiment, the outer ring 3 of the bearing is fixed and the inner ring 2 rotates relative to the outer ring 3. At this time, the sealing ring 1 is fixedly connected to the outer ring 3 and is in sealing contact with the inner ring 2 to achieve the sealing of the bearing. In another embodiment, the inner ring 2 and the outer ring 3 of the bearing both rotate. At this time, the sealing ring is in sealing contact with the inner ring 2 and the outer ring 3 respectively to achieve the sealing of the bearing.

[0097] It should be noted that the sealing ring 1 of the embodiment of the present application can be applied not only to bearings, but also to other transmission mechanisms or non-transmission mechanisms that require sealing. In addition, the sealing ring 1 of the embodiment of the present application can be applicable to isolation scenarios of various media, such as gas isolation, water isolation, oil isolation, etc., which are not limited here. Those skilled in the art can apply the sealing ring 1 to different application scenarios as needed to achieve sealing isolation. In addition, in the embodiment of the present application, the structure of the sealing ring 1 is the same as the structure of the sealing ring 1 in any of the above embodiments, and its beneficial effects are also similar, which will not be repeated here.

[0098] An embodiment of the present application also provides a vehicle, which includes the above-mentioned bearing.

[0099] It should be noted that in the embodiment of the present application, the structure of the bearing is the same as the structure of the bearing in any of the above embodiments, and its beneficial effects are also similar, which will not be elaborated here.

[0100] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0101] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A sealing ring, characterized in that: The sealing ring comprises: an annular capsule and a plurality of elastic members; The annular capsule has an annular chamber; A plurality of elastic members are arranged in the annular chamber at intervals along the circumferential direction of the annular chamber, and the elastic members can be elastically deformed along the radial direction of the annular chamber.

2. The sealing ring according to claim 1, characterized in that: The sealing ring further comprises a first support ring, wherein the first support ring is arranged in the annular chamber and the first support ring is extended along the circumference of the annular chamber; The elastic member is connected to the first supporting ring, and at least a portion of the elastic member abuts against the bladder wall of the annular bladder.

3. The sealing ring according to claim 2, characterized in that: The elastic member is an arc-shaped spring piece.

4. The sealing ring according to claim 3, characterized in that: Along the extension direction of the arc-shaped elastic piece, the arc-shaped elastic piece includes a fixed section, an abutting section and a free section which are arranged in sequence, and the fixed section is arranged close to the first supporting ring; The fixing section is fixedly connected to the first supporting ring; The abutting section abuts against the capsule wall of the annular capsule; The free section is suspended in the annular chamber.

5. The sealing ring according to claim 2, characterized in that: The annular capsule comprises a first peripheral wall and a second peripheral wall spaced apart in the radial direction of the annular chamber, wherein the first peripheral wall is close to the center of the annular capsule; The first supporting ring is connected to the second peripheral wall; At least a portion of the elastic member abuts against the first peripheral wall.

6. The sealing ring according to claim 5, characterized in that The sealing ring further includes a second supporting ring connected to a side of the second peripheral wall facing away from the first supporting ring.

7. The sealing ring according to claim 6, characterized in that A first wear-resistant layer is disposed on a side of the first peripheral wall facing away from the elastic member.

8. The sealing ring according to claim 2, characterized in that: The annular capsule comprises a first peripheral wall and a second peripheral wall spaced apart in the radial direction of the annular chamber, wherein the first peripheral wall is close to the center of the annular capsule; The first supporting ring is connected to the first peripheral wall; At least a portion of the elastic member abuts against the second peripheral wall.

9. The sealing ring according to claim 8, characterized in that The sealing ring further includes a third supporting ring connected to a side of the first peripheral wall facing away from the first supporting ring.

10. The sealing ring according to claim 9, characterized in that A second wear-resistant layer is disposed on a side of the second peripheral wall facing away from the elastic member.

11. The sealing ring according to claim 2, characterized in that: The annular capsule comprises a first peripheral wall and a second peripheral wall spaced apart in the radial direction of the annular chamber, wherein the first peripheral wall is close to the center of the annular capsule; The first supporting ring is disposed between the first peripheral wall and the second peripheral wall, and there is a gap between the first supporting ring and the first peripheral wall and the second peripheral wall; The elastic member includes a first elastic member and a second elastic member, the first elastic member is connected to a side of the first support ring close to the first peripheral wall, and at least a portion of the first elastic member abuts against the first peripheral wall; the second elastic member is connected to a side of the first support ring close to the second peripheral wall, and at least a portion of the second elastic member abuts against the second peripheral wall.

12. The sealing ring according to claim 11, characterized in that A first wear-resistant layer and a second wear-resistant layer are respectively provided on the side of the first peripheral wall and the side of the second peripheral wall facing away from the elastic member.

13. A bearing, characterized in that: The bearing comprises: An inner ring and an outer ring are arranged at intervals in the radial direction, and the inner ring and the outer ring rotate relative to each other; And the sealing ring according to any one of claims 1 to 12, wherein the sealing ring is arranged between the inner ring and the outer ring, and the sealing ring is connected to the inner ring and the outer ring respectively.

14. A vehicle, characterized in that: The vehicle comprises the bearing of claim 13.

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