Deep groove ball bearing retainer structure

Abstract

The utility model relates to the technical field of bearing accessories, in particular to a deep groove ball bearing retainer structure. Comprising two identical retainers which are oppositely and fixedly connected, the retainers are provided with a plurality of arc-shaped positioning sections and connecting sections arranged between the positioning sections at intervals in the circumferential direction, balls are limited in the opposite positioning sections of the two retainers, through grooves are formed in the surfaces of the positioning sections, and lubricating cavities communicated with the through grooves are formed in the inner walls of the positioning sections; the lubricating cavities are provided with large gaps close to the through grooves, lubricating grease can enter the lubricating cavities more easily to make contact with the surfaces of the balls, and the gaps of the lubricating cavities gradually decrease towards the edges of the lubricating cavities so that the lubricating grease can be smoothly driven to enter the portions, directly making contact with the balls and not existing in the lubricating cavities, of the positioning sections in the rolling process of the balls. The lubricating grease is extruded and uniformly smeared on the surface of the ball to form a lubricating film; therefore, the friction between the retainer and the balls can be reduced, and the rolling smoothness is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing accessories, in particular to a deep groove ball bearing retainer structure. Background Art

[0002] Deep groove ball bearings are a widely used type of rolling bearings, mainly composed of inner and outer rings, balls and cages. The main function of the cage is to support and guide the balls, ensuring that they are evenly distributed and maintain an appropriate distance when the bearing is running. When the traditional deep groove ball bearing cage is running at high speed, the grease is often not quickly and evenly distributed to the contact surface between the ball and the cage. The grease tends to concentrate in certain areas, while other areas may dry up, resulting in increased friction, affecting the smoothness, performance and life of the bearing. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] The utility model aims to provide a deep groove ball bearing cage structure, which can squeeze and evenly apply grease to the surface of the ball to form a lubricating film, reduce the friction between the cage and the ball, and improve the smoothness of rolling.

[0005] 2. Technical Solution

[0006] The utility model is realized by the following technical solutions:

[0007] The utility model proposes a deep groove ball bearing retainer structure, comprising two identical retainers which are relatively fixedly connected, the retainer having a plurality of arc-shaped positioning sections in the circumferential direction and connecting sections which are spaced between the positioning sections, the balls being limited in the positioning sections which are opposite to each other of the two retainers, the surfaces of the positioning sections being provided with through grooves, and the inner walls of the positioning sections being provided with lubrication cavities which are connected with the through grooves.

[0008] Furthermore, the lubrication cavity is arranged at the top of the inner wall of the positioning section, and the gap between the lubrication cavity and the ball decreases from the middle to the edge.

[0009] Furthermore, the inner wall of the positioning section is in a hemispherical arc shape that fits the surface of the ball, and the top of the inner wall of the positioning section is concave inward in an arc shape to form a lubrication cavity between the ball and the top of the inner wall of the positioning section.

[0010] Furthermore, the connecting section is a strip structure with a substantially uniform width, and wing plates are formed in the middle of the positioning section and extend toward both sides of the retaining frame.

[0011] Furthermore, the plurality of positioning segments are arranged at equal intervals along the circumference of the retaining frame.

[0012] Furthermore, the two retaining frames are made of copper-zinc alloy and connected by riveting.

[0013] 3. Beneficial Effects

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model has a through groove on the surface of the positioning section, and the inner wall of the positioning section is provided with a lubrication cavity connected to the through groove. The lubrication cavity has a larger gap near the through groove, which makes it easier for the grease to enter the lubrication cavity and contact the surface of the ball. The gap of the lubrication cavity decreases toward its edge, so that the grease can be smoothly driven into the part of the positioning section that is in direct contact with the ball and where the non-lubrication cavity exists during the rolling of the ball, so that the grease is squeezed and evenly applied to the surface of the ball to form a lubrication film; therefore, the utility model can reduce the friction between the retaining frame and the ball and improve the smoothness of the rolling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of a single cage;

[0018] Figure 3 yes Figure 1 a front view of the sectioned portion;

[0019] 1. Cage; 11. Positioning section; 111. Through groove; 12. Connecting section; 13. Wing plate; 2. Ball; 3. Lubrication chamber. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] A deep groove ball bearing cage structure, see Figure 1-3 , including two identical and relatively fixedly connected retaining frames 1, the retaining frame 1 has a plurality of arc-shaped positioning segments 11 in the circumferential direction, and connecting segments 12 spaced between the positioning segments 11, wherein the plurality of positioning segments 11 are arranged at equal intervals along the circumferential direction of the retaining frame 1, and the two retaining frames 1 are made of copper-zinc alloy and are connected and fixed by riveting.

[0022] The inner wall of the positioning section 11 is a hemispherical arc that fits the surface of the ball 2. The ball 2 is confined in the positioning sections 11 opposite to the two retaining frames 1. The retaining frame 1 is installed between the inner ring and the outer ring of the bearing. The ball 2 is also embedded in the grooves of the inner ring and / or the outer ring of the bearing. The retaining frame 1 maintains the stability of the rotation of the ball 2.

[0023] Among them, a through groove 111 is opened on the surface of the positioning section 11, and a lubrication cavity 3 connected with the through groove 111 is arranged on the inner wall of the positioning section 11. Grease can enter the lubrication cavity 3 through the through groove 111 to reduce the friction between the retaining frame 1 and the ball 2 and improve the smoothness of rolling.

[0024] The top of the inner wall of the positioning section 11 is concave inward in an arc shape, and the concave structure forms a lubrication cavity 3 between the ball 2 and the top of the inner wall of the positioning section 11. Therefore, the lubrication cavity 3 is set at the top of the inner wall of the positioning section 11, and the gap between it and the ball 2 decreases from the middle to the edge. The lubrication cavity 3 has a larger gap near the through groove 111, which makes it easier for the grease to enter the lubrication cavity 3 and contact the surface of the ball 2. The gap of the lubrication cavity 3 decreases toward its edge, so that the grease can be smoothly driven into the part of the positioning section 11 that directly contacts the ball 2 and does not exist in the lubrication cavity 3 during the rolling of the ball 2, so that the grease is squeezed and evenly applied to the surface of the ball to form a lubrication film.

[0025] In addition, the connecting section 12 is a strip structure with a basically consistent width to maintain the overall lightweight structure of the retaining frame 1; wing plates 13 are formed in the middle of the positioning section 11 and extend to both sides of the retaining frame 1 respectively. By setting the wing plates 13 to limit the range of movement of a certain ball 2, the stability of the rotation of the ball 2 is improved.

[0026] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary personnel in the field to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents of the present invention for protection have been fully recorded in the claims.

Claims

1. A deep groove ball bearing cage structure, comprising two identical and relatively fixedly connected cages, the cage having a plurality of arc-shaped positioning segments in the circumferential direction, and connecting segments spaced between the positioning segments, the ball being confined in the relative positioning segments of the two cages, characterized in that: A through groove is provided on the surface of the positioning section, and a lubrication cavity communicating with the through groove is provided on the inner wall of the positioning section.

2. A deep groove ball bearing cage structure according to claim 1, characterized in that: The lubrication cavity is arranged at the top of the inner wall of the positioning section, and the clearance between the lubrication cavity and the ball decreases from the middle to the edge.

3. A deep groove ball bearing cage structure according to claim 2, characterized in that: The inner wall of the positioning section is in a hemispherical arc shape that fits the surface of the ball. The top of the inner wall of the positioning section is concave inward in an arc shape, and a lubrication cavity is formed between the ball and the top of the inner wall of the positioning section.

4. A deep groove ball bearing cage structure according to claim 3, characterized in that: The connecting section is a strip structure with a substantially uniform width, and wing plates are respectively extended from the middle of the positioning section to both sides of the retaining frame.

5. A deep groove ball bearing cage structure according to any one of claims 1 to 4, characterized in that: The plurality of positioning segments are arranged at equal intervals along the circumference of the retaining frame.

6. A deep groove ball bearing cage structure according to any one of claims 1 to 4, characterized in that: The two retaining frames are made of copper-zinc alloy and connected by riveting.

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