Insulating ceramic bearing

Abstract

The utility model provides an insulating ceramic bearing, and belongs to the technical field of bearings. The problem of poor stability in the prior art is solved. The insulating ceramic bearing comprises an outer ring, an inner ring, a retainer and balls, the outer ring, the inner ring and the retainer are made of insulating materials, the balls are made of ceramic materials, the balls are circumferentially and uniformly connected onto the retainer, the balls positioned by the retainer are uniformly distributed between the outer ring and the inner ring, and the insulating ceramic bearing further comprises a disc-shaped positioning disc. A protruding connecting part is arranged on the outer edge of the positioning disc, a concave positioning groove is formed in the inner side of the outer ring, a connecting seat which is a step seat is arranged at an outer end opening of the inner ring, the positioning disc is arranged on the connecting seat in a sleeved mode, and the connecting part of the positioning disc is embedded in the positioning groove. And the inner edge of the positioning disc is propped against the end part of the connecting seat under the elastic action of the connecting part. The insulating ceramic bearing is high in stability.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearings and relates to an insulating ceramic bearing. Background Art

[0002] A ceramic bearing is a bearing that uses ceramic materials as rolling elements (such as balls or rollers) and has many unique performance advantages, making it perform excellently in certain application scenarios. Ceramic materials usually include zirconia (ZrO 2 ), silicon nitride (Si 3 N 4 ), alumina (Al 2 O 3 ), etc.

[0003] In existing ceramic bearings, ceramic balls are usually directly positioned by a cage. During use, the balls are easily affected by the outside world, resulting in poor stability.

[0004] Moreover, lubricating grease is mainly concentrated at the cage, resulting in rapid consumption of the lubricating grease after long-term use and poor stability. Summary of the Invention

[0005] The purpose of the utility model is to provide an insulating ceramic bearing with high stability and a compact structure for the above problems existing in the prior art.

[0006] The purpose of the utility model can be achieved by the following technical solutions:

[0007] An insulating ceramic bearing includes an outer ring, an inner ring and a cage made of insulating materials, and balls made of ceramic materials. The number of the balls is several, and the several balls are circumferentially and evenly connected to the cage and are evenly distributed between the outer ring and the inner ring under the positioning of the cage. It is characterized in that it further includes a disc-shaped positioning disc. A protruding connecting portion is provided at the outer edge of the positioning disc. A recessed positioning groove is provided on the inner side of the outer ring. A connecting seat in the form of a stepped seat is provided at the outer port of the inner ring. The positioning disc is sleeved on the connecting seat, and the connecting portion of the positioning disc is embedded in the positioning groove. Under the elastic force of the connecting portion, the inner edge of the positioning disc abuts against the end of the connecting seat.

[0008] In the above insulating ceramic bearing, the number of the positioning discs is two, and the two positioning discs are respectively located at both ends of the bearing. A cavity is formed between the two positioning discs, the outer ring and the inner ring to cover the cage and the balls.

[0009] In the above insulating ceramic bearing, the positioning disc includes a disc-shaped body, and the connecting portion is located at the edge of the body.

[0010] In the above-mentioned insulated ceramic bearing, an inclined transition section is provided between the body and the connecting portion, and under the action of the transition section, the connecting portion is far away from the body.

[0011] In the above-mentioned insulated ceramic bearing, the cross-section of the connecting portion is U-shaped.

[0012] In the above-mentioned insulated ceramic bearing, a number of recessed deformation notches are provided at the outer edge of the positioning disc, and the deformation notches divide the connecting portion into a number of independent deformation units.

[0013] In the above-mentioned insulated ceramic bearing, in two adjacent positioning discs on the left and right, the connecting portions are arranged facing each other.

[0014] In the above-mentioned insulated ceramic bearing, the height dimension of the stepped seat matches the thickness dimension of the body.

[0015] In the above-mentioned insulated ceramic bearing, the body, the transition section and the connecting portion are of an integral structure and are made of plastic material.

[0016] In the above-mentioned insulated ceramic bearing, the inner diameter dimension at the outside of the positioning groove on the outer ring is larger than the inner diameter dimension at the inside of the positioning groove.

[0017] Compared with the prior art, in this insulated ceramic bearing, since the ceramic material balls are located between the two positioning discs, the balls will not be affected by the external action, effectively improving the stability of the entire insulated ceramic bearing.

[0018] At the same time, the positioning discs are located at the ports of the outer ring and the inner ring, without occupying extra space, and the overall structure is relatively compact, having high practical value. Description of the Drawings

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the front of this insulated ceramic bearing.

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the back of this insulated ceramic bearing.

[0021] Figure 3 It is a sectional structural schematic diagram of this insulated ceramic bearing.

[0022] Figure 4 It is a three-dimensional structural schematic diagram of the positioning disc in this insulated ceramic bearing.

[0023] In the figure, 1. outer ring; 1a. positioning groove; 2. inner ring; 2a. connecting seat; 3. cage; 4. ball; 5. positioning disc; 5a. connecting portion; 5b. body; 5c. transition section; 6. deformation notch. Detailed Embodiment

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] It should be noted that when a component is referred to as being "mounted on" another component, it can be directly mounted on the other component or there may also be an intermediate component. When a component is considered to be "arranged on" another component, it can be directly arranged on the other component or there may be an intermediate component at the same time. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or there may be an intermediate component at the same time.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used herein in the description of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0027] As Figure 1 shown, the present insulating ceramic bearing includes an outer ring 1, an inner ring 2 and a cage 3 made of insulating material, and ceramic balls 4. The number of the ceramic balls 4 is several, and the several ceramic balls 4 are circumferentially and evenly connected to the cage 3, and the several ceramic balls 4 positioned by the cage 3 are evenly distributed between the outer ring 1 and the inner ring 2.

[0028] As Figure 1 and Figure 2 and Figure 3 and Figure 4 shown, it further includes a positioning disk 5 in the shape of a disk. The outer edge of the positioning disk 5 has a protruding connecting portion 5a. The inner side of the outer ring 1 has a recessed positioning groove 1a. The outer port of the inner ring 2 has a connecting seat 2a in the shape of a stepped seat. The positioning disk 5 is sleeved on the connecting seat 2a, and the connecting portion 5a of the positioning disk 5 is embedded in the positioning groove 1a. Under the elastic force of the connecting portion 5a, the inner edge of the positioning disk 5 abuts against the end of the connecting seat 2a.

[0029] The present insulating ceramic bearing creatively adopts an outer ring 1, an inner ring 2 and a cage 3 made of insulating material, and at the same time adopts ceramic balls 4 made of ceramic material. Therefore, the whole insulating ceramic bearing has the characteristic of insulation, and the ceramic balls 4 made of ceramic material have relatively high wear resistance, and the service life of the whole insulating ceramic bearing is also relatively high.

[0030] The number of the positioning discs 5 is two, and the two positioning discs 5 are respectively located at both ends of the bearing. A cavity is formed among the two positioning discs 5, the outer ring 1 and the inner ring 2 to cover the cage 3 and the balls 4.

[0031] Such a structure can completely cover the balls 4, effectively avoiding the balls 4 from being affected by the outside.

[0032] The positioning disc 5 includes a disc-shaped body 5b, and the connecting portion 5a is located at the edge of the body 5b.

[0033] An inclined transition section 5c is arranged between the body 5b and the connecting portion 5a. Under the action of the transition section 5c, the connecting portion 5a is far away from the body 5b.

[0034] The arrangement of the transition section 5c can make the connecting portion 5a as far away from the port of the outer ring 1 as possible. That is to say, it can prevent the positioning disc from being easily opened.

[0035] The cross section of the connecting portion 5a is U-shaped.

[0036] A plurality of recessed deformation notches 6 are arranged at the outer edge of the positioning disc 5, and the deformation notches 6 divide the connecting portion 5a into several independent deformation units.

[0037] Multiple independent deformation units can improve the stability.

[0038] Specifically, such a structure can not only make the positioning disc more convenient and smooth to be embedded in the outer ring, but also prevent the whole bearing from being unusable even if individual deformation units are damaged.

[0039] In the two adjacent positioning discs on the left and right, the connecting portions are arranged facing each other.

[0040] The height dimension of the step seat matches the thickness dimension of the body.

[0041] The body, the transition section and the connecting portion are of an integral structure and are made of plastic material.

[0042] The inner diameter dimension at the outside of the positioning groove on the outer ring is larger than the inner diameter dimension at the inside of the positioning groove.

[0043] In this insulated ceramic bearing, since the ceramic balls are located between the two positioning discs, the balls will not be affected by the outside, effectively improving the stability of the whole insulated ceramic bearing.

[0044] At the same time, the positioning discs are located at the ports of the outer ring and the inner ring, without occupying extra space, and the overall structure is relatively compact, having high practical value.

[0045] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0046] Those of ordinary skill in the art of this technology should recognize that the above embodiments are only used to illustrate the present utility model, rather than to limit the present utility model. As long as appropriate changes and variations made to the above embodiments fall within the scope of the spirit of the present utility model, they fall within the scope of protection required by the present utility model.

Claims

1. An insulating ceramic bearing, comprising an outer ring, an inner ring and a cage made of insulating material and balls made of ceramic material, wherein the number of the balls is several and the balls are evenly distributed circumferentially connected to the cage, and the balls positioned by the cage are evenly distributed between the outer ring and the inner ring, characterized in that: It also includes a disc-shaped positioning plate, which has a protruding connecting portion at the outer edge of the positioning plate, a recessed positioning groove on the inner side of the outer ring, and a connecting seat in the form of a stepped seat at the outer end of the inner ring. The positioning plate is sleeved on the connecting seat and the connecting portion of the positioning plate is embedded in the positioning groove. Under the elastic force of the connecting portion, the inner edge of the positioning plate rests against the end of the connecting seat.

2. The insulating ceramic bearing according to claim 1, characterized in that: There are two positioning plates, which are respectively located at two ends of the bearing. A cavity for covering the retaining frame and the balls is formed between the two positioning plates, the outer ring and the inner ring.

3. The insulating ceramic bearing according to claim 2, characterized in that: The positioning plate comprises a disc-shaped body, and the connecting portion is located at the edge of the body.

4. The insulating ceramic bearing according to claim 3, characterized in that: An inclined transition section is provided between the main body and the connecting portion, and the connecting portion is moved away from the main body under the action of the transition section.

5. The insulating ceramic bearing according to claim 4, characterized in that: The cross section of the connecting portion is U-shaped.

6. The insulating ceramic bearing according to claim 5, characterized in that: The outer edge of the positioning plate is provided with a plurality of concave deformation notches, and the deformation notches separate the connecting part into a plurality of independent deformation units.

7. The insulating ceramic bearing according to claim 6, characterized in that: In two positioning plates adjacent to each other on the left and right, the connecting parts are arranged facing each other.

8. The insulating ceramic bearing according to claim 7, characterized in that: The height dimension of the step seat matches the thickness dimension of the body.

9. The insulating ceramic bearing according to claim 8, characterized in that: The body, the transition section and the connecting portion are an integrated structure and are made of plastic material.

10. The insulating ceramic bearing according to claim 9, characterized in that: The inner diameter dimension of the outer side of the positioning groove on the outer ring is greater than the inner diameter dimension of the inner side of the positioning groove.

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