Ceramic bearing with dust cover convenient to disassemble and assemble

Abstract

The utility model relates to the field of ceramic bearings, in particular to a ceramic bearing with a dust cover convenient to disassemble and assemble. The utility model relates to a ceramic bearing with a dust cover convenient to disassemble and assemble, which comprises a ceramic inner ring, a ceramic outer ring, a retainer arranged between the ceramic inner ring and the ceramic outer ring, a ceramic ball arranged between the ceramic inner ring and the ceramic outer ring, and a dust cover, an inner arc-shaped limiting groove is formed in the peripheral side surface of the inner ring groove of the ceramic inner ring; an outer ring groove is formed in the side face of the ceramic outer ring, and an outer arc-shaped limiting groove is formed in the circumferential side face of the outer ring groove of the ceramic outer ring. And the dustproof cover is detachably connected between the inner arc-shaped limiting groove of the ceramic inner ring and the outer arc-shaped limiting groove of the ceramic outer ring. The dustproof cover of the ceramic bearing can be quickly disassembled and assembled and is convenient to disassemble, assemble and maintain.

Description

Technical Field

[0001] This application relates to the field of ceramic bearings, and in particular to a ceramic bearing with an easy-to-remove dust cover. Background Technology

[0002] Ceramic bearings are mainly composed of a ceramic inner ring, a ceramic outer ring, a cage, and ceramic balls. They have advantages such as resistance to extreme environments, insulation, antimagnetic properties, wear resistance, self-lubrication, and high speed. Moreover, ceramic bearings are significantly lighter than metal bearings, making them widely used in industrial machine tools, nuclear magnetic resonance equipment, food production equipment, chemical production equipment, pharmaceutical production equipment, and other fields.

[0003] Ceramic bearings are susceptible to dust and other impurities in their applications. When dust and other impurities enter the grooves of the inner and / or outer rings of the ceramic bearing, they affect the rotational stability of the ceramic balls. Therefore, dustproof covers are installed on ceramic bearings to maintain cleanliness and stable operation. In existing ceramic bearings, such as the novel wear-resistant silicon nitride ceramic bearing disclosed in application number 2017208488455, both the right and left dust covers are embedded between the outer and inner rings. While this provides a good dustproof seal, it also makes disassembly of the left and right dust covers difficult, and subsequent lubrication replenishment is challenging. Therefore, this application provides a ceramic bearing with easily removable dust covers. Utility Model Content

[0004] To address the problem of relatively difficult disassembly of dust covers in existing ceramic bearings, this application provides a ceramic bearing with a dust cover that is easy to install and remove.

[0005] The ceramic bearing with an easy-to-remove dust cover provided in this application is achieved through the following solution:

[0006] A ceramic bearing with an easily detachable dust cover includes a ceramic inner ring, a ceramic outer ring, a cage disposed between the ceramic inner ring and the ceramic outer ring, ceramic balls disposed between the ceramic inner ring and the ceramic outer ring, and a dust cover. The ceramic inner ring has an inner annular groove formed on its side surface, and an inner arc-shaped limiting groove is formed on the circumferential side surface of the inner annular groove of the ceramic inner ring. The ceramic outer ring has an outer annular groove formed on its side surface, and an outer arc-shaped limiting groove is formed on the circumferential side surface of the outer annular groove of the ceramic outer ring. The dust cover is detachably connected between the inner arc-shaped limiting groove of the ceramic inner ring and the outer arc-shaped limiting groove of the ceramic outer ring.

[0007] The dust cover of the ceramic bearing in this application can be quickly disassembled and assembled, facilitating disassembly and maintenance.

[0008] Preferably, the dust cover includes a dust cover body and an elastic outer ring body disposed on the outer periphery of the dust cover body. The elastic outer ring body of the dust cover is detachably connected between the inner arc-shaped limiting groove of the ceramic inner ring and the outer arc-shaped limiting groove of the ceramic outer ring.

[0009] Preferably, the dust cover body is integrally formed with a first snap-fit ​​groove; the bottom surface of the inner ring groove of the ceramic inner ring is integrally formed with a first snap-fit ​​connector; after the dust cover is installed, the first snap-fit ​​connector snaps into the first snap-fit ​​groove of the dust cover body.

[0010] Preferably, a gap of 0.05-0.2mm is reserved between the first card connector and the first card slot.

[0011] Preferably, the dust cover body is integrally formed with a second snap-fit ​​groove; the bottom surface of the outer ring groove of the ceramic outer ring is integrally formed with a second snap-fit ​​connector; after the dust cover is installed, the second snap-fit ​​connector snaps into the second snap-fit ​​groove of the dust cover body.

[0012] Preferably, a gap of 0.05-0.2mm is reserved between the second card connector and the second card slot.

[0013] Preferably, there are two ways to connect the dust cover body and the elastic outer ring body. In the first way, the outer periphery of the dust cover body is integrally formed with an arc-shaped groove; the elastic outer ring body is sleeved on the arc-shaped groove on the outer periphery of the dust cover body.

[0014] By adopting the above technical solution, the difficulty of disassembling the dust cover can be further reduced.

[0015] The second type has an arc-shaped groove integrally formed on the outer periphery of the dust cover body; the elastic outer ring is integrally formed on the arc-shaped groove on the outer periphery of the dust cover body.

[0016] By adopting the above technical solutions, the production cost of dust covers can be reduced.

[0017] Preferably, the inner ring groove formed on the side of the ceramic inner ring has a chamfer A.

[0018] Preferably, the outer ring groove formed on the side of the ceramic outer ring has a chamfer B.

[0019] In summary, this application has the following advantages:

[0020] 1. The dust cover of the ceramic bearing in this application can be quickly disassembled and assembled, which is convenient for disassembly and maintenance.

[0021] 2. The dust cover of the ceramic bearing in this application can effectively prevent dust, dirt and other external particles from entering the bearing, reduce wear and damage, thereby extending the service life of the bearing and maintaining its performance. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the ceramic bearing with a dust cover that is easy to install and remove in Embodiment 1 of this application.

[0023] Figure 2 This is a schematic diagram of the overall structure of the ceramic bearing with a dust cover that is easy to install and remove in Embodiment 2 of this application.

[0024] Figure 3 This is a schematic diagram of the overall structure of the ceramic bearing with a dust cover that is easy to install and remove in Embodiment 3 of this application.

[0025] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle.

[0026] Figure 5 yes Figure 3 A magnified view of a section at point B.

[0027] In the diagram, 1. Ceramic inner ring; 11. Inner ring groove; 111. Chamfer A; 12. Inner arc-shaped limiting groove; 13. First locking connector; 2. Ceramic outer ring; 21. Outer ring groove; 210. Arc-shaped groove; 211. Chamfer B; 22. Outer arc-shaped limiting groove; 23. Second locking connector; 3. Cage; 4. Ceramic ball; 5. Dust cover; 511. First locking groove; 512. Second locking groove; 51. Dust cover body; 52. Elastic outer ring. Detailed Implementation

[0028] The technical solution of this application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] Example 1: Refer to Figure 1 A ceramic bearing with an easily detachable dust cover includes a ceramic inner ring 1, a ceramic outer ring 2, a cage 3 disposed between the ceramic inner ring 1 and the ceramic outer ring 2, ceramic balls 4 disposed between the ceramic inner ring 1 and the ceramic outer ring 2, and a dust cover 5. The dust cover 5 consists of a left dust cover 501 and a right dust cover 502, which have the same structure.

[0030] Reference Figure 1The inner ceramic ring 1 has an inner ring groove 11 formed on its side. The groove opening of the inner ring groove 11 is chamfered A111, and an inner arc-shaped limiting groove 12 is formed on the circumferential side of the inner ring groove 11. The outer ceramic ring 2 has an outer ring groove 21 formed on its side. The groove opening of the outer ring groove 21 is chamfered B211, and an outer arc-shaped limiting groove 22 is formed on the circumferential side of the outer ring groove 21. A dust cover 5 is detachably connected between the inner arc-shaped limiting groove 12 of the inner ceramic ring 1 and the outer arc-shaped limiting groove 22 of the outer ceramic ring 2. That is, the left dust cover 501 is detachably connected to the left side of the ceramic bearing, and the right dust cover 502 is detachably connected to the right side of the ceramic bearing.

[0031] Reference Figure 1 The dust cover 5 includes a dust cover body 51 and an elastic outer ring 52 disposed on the outer periphery of the dust cover body 51. The elastic outer ring 52 is made of thermoplastic elastomer material and can be selected from any one of fluororubber, silicone rubber, neoprene rubber, EPDM rubber, TPEE, and TPU. The dust cover body 51 can be made of any one of silicon carbide ceramic, zirconium oxide ceramic, silicon carbide ceramic, alumina ceramic, ABS resin, PTFE resin, and PEEK resin. The elastic outer ring 52 is preferably made of fluororubber, and the dust cover body 51 is made of PTFE resin.

[0032] Reference Figure 1 The specific connection method between the dust cover body 51 and the elastic outer ring 52 is as follows: the outer periphery of the dust cover body 51 is integrally formed with an arc groove 210. The elastic outer ring 52 is deformed and fitted into the arc groove 210 on the outer periphery of the dust cover body 51. That is, when the elastic outer ring 52 is fitted into the dust cover body 51, the elastic outer ring 52 deforms, so that the elastic outer ring 52 is relatively stable and detachably connected to the dust cover body 51.

[0033] The elastic outer ring 52 of the dust cover 5 is detachably connected between the inner arc-shaped limiting groove 12 of the ceramic inner ring 1 and the outer arc-shaped limiting groove 22 of the ceramic outer ring 2. The elastic outer ring 52 can be pried from the chamfer A111 to deform and disengage from the inner arc-shaped limiting groove 12, or the elastic outer ring 52 can be pried from the chamfer B211 to deform and disengage from the outer arc-shaped limiting groove 22. The operator can pull the dust cover 5 to complete the disassembly, which is convenient for disassembling and assembling the dust cover 5.

[0034] The difference between Example 2 and Example 1 is as follows: (Refer to...) Figure 2Another specific connection method between the dust cover body 51 and the elastic outer ring 52 is as follows: the outer periphery of the dust cover body 51 is integrally formed with an arc-shaped groove 210, and the elastic outer ring 52 is integrally formed with the arc-shaped groove 210 on the outer periphery of the dust cover body 51. That is, the dust cover 5 is made of thermoplastic elastomer resin (such as fluororubber, silicone rubber, neoprene rubber, EPDM rubber, TPU, TPEE, etc.) and is formed by integral injection molding or injection molding + machining. The preferred integral injection molding production method can reduce the production cost of the dust cover 5.

[0035] The elastic outer ring 52 of the dust cover 5 is detachably connected between the inner arc-shaped limiting groove 12 of the ceramic inner ring 1 and the outer arc-shaped limiting groove 22 of the ceramic outer ring 2. The elastic outer ring 52 can be pried from the chamfer A111 to deform and disengage from the inner arc-shaped limiting groove 12, or the elastic outer ring 52 can be pried from the chamfer B211 to deform and disengage from the outer arc-shaped limiting groove 22. The operator can pull the dust cover 5 to complete the disassembly, which is convenient for disassembling and assembling the dust cover 5.

[0036] The difference between Example 3 and Example 1 is as follows: (Refer to...) Figure 3 and Figure 4 To ensure the connection stability of the dust cover 5, the dust cover body 51 is integrally formed with a first snap-fit ​​groove 511, and the bottom surface of the inner ring groove 11 of the ceramic inner ring 1 is integrally formed with a first snap-fit ​​connector 13. After the dust cover 5 is installed, the first snap-fit ​​connector 13 snaps into the first snap-fit ​​groove 511 of the dust cover body 51, and a gap of 0.05-0.2mm is reserved between the first snap-fit ​​connector 13 and the first snap-fit ​​groove 511.

[0037] Reference Figure 3 and Figure 5 The dust cover body 51 is integrally formed with a second snap-fit ​​groove 512. The bottom surface of the outer ring groove 21 of the ceramic outer ring 2 is integrally formed with a second snap-fit ​​connector 23. After the dust cover 5 is installed, the second snap-fit ​​connector 23 snaps into the second snap-fit ​​groove 512 of the dust cover body 51. A gap of 0.05-0.2mm is reserved between the second snap-fit ​​connector 23 and the second snap-fit ​​groove 512.

[0038] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A ceramic bearing with an easy-to-remove dust cover, comprising a ceramic inner ring (1), a ceramic outer ring (2), a cage (3) disposed between the ceramic inner ring (1) and the ceramic outer ring (2), and ceramic balls (4), characterized in that: It also includes a dust cover (5), an inner ring groove (11) is formed on the side of the ceramic inner ring (1), and an inner arc-shaped limiting groove (12) is formed on the circumferential side of the inner ring groove (11) of the ceramic inner ring (1); an outer ring groove (21) is formed on the side of the ceramic outer ring (2), and an outer arc-shaped limiting groove (22) is formed on the circumferential side of the outer ring groove (21) of the ceramic outer ring (2); the dust cover (5) is detachably connected between the inner arc-shaped limiting groove (12) of the ceramic inner ring (1) and the outer arc-shaped limiting groove (22) of the ceramic outer ring (2).

2. The ceramic bearing with dust cover convenient to dismount according to claim 1, characterized in that: The dust cover (5) includes a dust cover body (51) and an elastic outer ring (52) disposed on the outer periphery of the dust cover body (51). The elastic outer ring (52) of the dust cover (5) is detachably connected between the inner arc-shaped limiting groove (12) of the ceramic inner ring (1) and the outer arc-shaped limiting groove (22) of the ceramic outer ring (2).

3. The ceramic bearing with dust cover according to claim 2, wherein: The dust cover body (51) is integrally formed with a first snap-fit ​​groove (511); the bottom surface of the inner ring groove (11) of the ceramic inner ring (1) is integrally formed with a first snap-fit ​​connector (13); after the dust cover (5) is installed, the first snap-fit ​​connector (13) snaps into the first snap-fit ​​groove (511) of the dust cover body (51).

4. The ceramic bearing with dust cover according to claim 3, wherein: A gap of 0.05-0.2mm is reserved between the first card connector (13) and the first card slot (511).

5. The ceramic bearing with dust cover according to claim 2, wherein: The dust cover body (51) is integrally formed with a second snap-fit ​​groove (512); the bottom surface of the outer ring groove (21) of the ceramic outer ring (2) is integrally formed with a second snap-fit ​​connector (23); after the dust cover (5) is installed, the second snap-fit ​​connector (23) snaps into the second snap-fit ​​groove (512) of the dust cover body (51).

6. The ceramic bearing with dust cover according to claim 5, wherein: A gap of 0.05-0.2mm is reserved between the second card connector (23) and the second card slot (512).

7. The ceramic bearing with dust cover according to claim 2, wherein: The outer periphery of the dust cover body (51) is integrally formed with an arc groove (210); the elastic outer ring (52) is sleeved on the arc groove (210) on the outer periphery of the dust cover body (51).

8. The ceramic bearing with dust cover according to claim 2, wherein: The outer periphery of the dust cover body (51) is integrally formed with an arc groove (210); the elastic outer ring (52) is integrally formed with the arc groove (210) on the outer periphery of the dust cover body (51).

9. The ceramic bearing with dust cover according to claim 2, wherein: The inner ring groove (11) formed on the side of the ceramic inner ring (1) has a chamfer A (111).

10. A ceramic bearing with an easily detachable dust cover according to claim 2, characterized in that: The outer ring groove (21) formed on the side of the ceramic outer ring (2) has a chamfered B (211).

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