Thrust ball bearing retainer

Abstract

The utility model relates to a thrust ball bearing retainer which comprises a retainer body, the retainer body is composed of two oppositely-arranged retainer pieces, a first supporting connecting piece and a second supporting connecting piece are arranged between the two retainer pieces, and a plurality of mounting holes are formed in the retainer pieces. Opposite mounting holes in the two retainer pieces are combined to form a pocket hole used for positioning a steel ball, the steel ball is installed in the pocket hole, the first bearing connecting piece is annular, the steel ball is located between the first bearing connecting piece and the second bearing connecting piece, the two retainer pieces are connected with the first bearing connecting piece through a first fastener, and the second bearing connecting piece is connected with the second bearing connecting piece through a second fastener. And the two retainer sheets are connected with the second supporting connecting piece through a second fastening piece. The retainer and the ball are combined into a whole to form the ball retainer assembly, the problem that the bearing is inconvenient to assemble and install is solved, meanwhile, friction between the end face of the retainer and a bearing raceway is effectively avoided, and the friction coefficient of the bearing is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing cages, and particularly relates to a thrust ball bearing cage. Background Art

[0002] The cage is a very important part of the bearing, mainly playing the role of evenly separating the rolling elements, reducing the mutual friction between the rolling elements, and guiding the movement of the rolling elements. For separable bearings, the cage can be combined with the rolling elements into a component, which is convenient for bearing assembly and installation.

[0003] Common thrust ball bearings generally consist of a seat ring, a shaft ring, balls, and a cage. The balls rotate in a circular motion along the bearing raceway. The thrust ball bearing that moves in a plane mainly has parts and components such as an upper thrust plate, a lower thrust plate, balls, and a cage. The bearing raceway is a plane, and the balls move back and forth in one direction or any direction within a certain range along the bearing raceway on the plane. The cage of this type of bearing is often a disc-shaped part, and the disc is covered with pocket holes for installing balls, as shown in Figure 3 and Figure 4 . The structure of this cage has the following disadvantages: First, the steel balls and the cage cannot form a component, which is inconvenient for bearing assembly and installation. When assembling the bearing, the cage needs to be placed flat on the bearing raceway first, and then the balls are placed in the pocket holes. When placing the balls, the balls will inevitably impact the bearing raceway. If the balls are heavy, it will cause damage to the bearing raceway surface and affect the service life of the bearing; Second, the cage falls on the bearing raceway and moves with the balls. The lower end surface of the cage and the bearing raceway surface generate sliding friction, increasing the friction coefficient of the bearing and resulting in an increase in the bearing friction force. Summary of the Utility Model

[0004] In view of the problems existing in the prior art, the utility model provides a thrust ball bearing cage.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: a thrust ball bearing cage, characterized in that it includes a cage body, the cage body is composed of two relatively arranged cage plates, a first support connecting piece and a second support connecting piece are arranged between the two cage plates, a plurality of mounting holes are arranged on the cage plates, and the opposite mounting holes on the two cage plates are combined into pocket holes for positioning steel balls. Steel balls are installed in the pocket holes. The first support connecting piece is annular, and a plurality of steel balls are all located between the first support connecting piece and the second support connecting piece. The two cage plates and the first support connecting piece are connected by a first fastener, and the two cage plates and the second support connecting piece are connected by a second fastener.

[0006] As a preferred solution, the first fastener is a rivet or a bolt.

[0007] As a preferred solution, the second fastener is a rivet or a bolt.

[0008] As a preferred solution, the mounting hole is a through hole, and the radius of the mounting hole is smaller than the radius of the steel ball.

[0009] As a preferred solution, a receiving cavity is provided in the cage body, the first supporting connecting member is located in the receiving cavity, an annular groove is provided on the outer circumferential surface of the cage body, and the second supporting connecting member is located in the annular groove.

[0010] As a preferred solution, sink grooves are provided on the opposite surfaces of the two cage plates, and a receiving cavity for receiving the first supporting connecting member is formed between the two sink grooves.

[0011] As a preferred solution, the sink groove is located at the center of the cage plate.

[0012] As a preferred solution, annular step grooves are provided on the outer circumferential sides of the cage plates, and an annular groove is formed between the two annular step grooves.

[0013] The beneficial effects of this application are as follows: 1. The cage body of this application is composed of two cage plates. By setting the first supporting connecting member and the second supporting connecting member, and the radius of the mounting hole is smaller than the radius of the steel ball, the steel ball is located in the pocket formed by the mounting holes on the two cage plates. The steel ball can rotate flexibly and will not fall out of the pocket, and the cage body will not generate sliding friction with the bearing raceway, reducing the bearing friction coefficient.

[0014] 2. In this application, through the first fastener and the second fastener, the two cage plates, the first supporting connecting member and the second supporting connecting member are fastened together to form a ball cage assembly, which facilitates the assembly and installation of the bearing and improves the installation efficiency.

[0015] 3. The radius of the mounting hole in this application is smaller than the radius of the steel ball. More circular holes can be distributed on the cage plates with the same outer diameter size, increasing the number of balls installed in the bearing and enhancing the bearing capacity of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural view of the present utility model;

[0017] Figure 2 is Figure 1 the A-A cross-sectional view in

[0018] Figure 3 is a schematic structural view of the prior art;

[0019] Figure 4 is Figure 3 the B-B cross-sectional view in

[0020] Reference numerals in the drawings: 1. Cage body, 11. Cage plate, 2. Steel ball, 3. Second supporting connecting member, 31. First fastener, 4. First supporting connecting member, 41. Second fastener. Detailed implementation mode

[0021] In order to make the purpose, technical solution and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that in the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] Please refer to Figure 1-2 , an embodiment of the present utility model provides a thrust ball bearing cage, which includes a cage body 1. The cage body 1 is composed of two relatively arranged cage plates 11. A first support connecting member 4 and a second support connecting member 3 are arranged between the two cage plates 11. A plurality of mounting holes are provided on the cage plates 11. The opposite mounting holes on the two cage plates 11 are combined into a pocket for positioning the steel balls 2, that is, two mounting holes axially opposite to each other along the cage body 1 are combined into a pocket. Steel balls 2 are installed in the pockets. The first support connecting member 4 is annular. The steel balls 2 are located between the first support connecting member 4 and the second support connecting member 3. The two cage plates 11 and the first support connecting member 4 are connected by a first fastener 41, and the two cage plates 11 and the second support connecting member 3 are connected by a second fastener 31.

[0023] Among them, the first fastener 41 is a rivet. The second fastener 31 is also a rivet. A first riveting hole for riveting the first fastener 41 is provided at the center of the cage plate 11, and a first riveting hole is also provided on the first support connecting member 4. A plurality of second riveting holes for riveting the second fastener 31 are provided on the cage plate 11 along its circumferential direction. A second riveting hole is provided on the second fastener 31. The number of the second riveting holes on the second fastener 31 is the same as the number of the second riveting holes on the cage plate 11, and the second riveting holes on the second fastener 31 correspond to the second riveting holes on the cage plate 11 one by one. It should be noted that the parts not detailed in this application are all prior arts.

[0024] Through the first fastener 41 and the second fastener 31, the two cage plates 11, the first support connecting member 4 and the second support connecting member 3 are fastened together to form a ball cage assembly, which facilitates the assembly and installation of the bearing and improves the installation efficiency.

[0025] Specifically, the mounting hole is a through hole, and the radius of the mounting hole is smaller than the radius of the steel ball 2. The first supporting connecting member 4 is cylindrical and is located at the center of the cage plate 11. It should be noted that the parts not detailed in this application are all prior arts.

[0026] The cage body 1 of this application is composed of two cage plates 11. By setting the first supporting connecting member 4 and the second supporting connecting member 3, and the radius of the mounting hole is smaller than the radius of the steel ball 2, the steel ball 2 is located in the pocket formed by the mounting holes on the two cage plates 11. The steel ball can rotate flexibly and will not fall out of the pocket, and the cage body will not produce sliding friction with the bearing raceway, reducing the bearing friction coefficient.

[0027] Certainly, the present utility model is not limited to the above-described embodiments. The following also provides several other embodiments based on the design concept of the present utility model.

[0028] For example, in other embodiments, different from the above-described embodiments, both the first fastener 41 and the second fastener 31 are bolts, and threaded holes for mating with the bolts are provided on the first supporting connecting member 4, the second supporting connecting member 4, and the cage plate 11.

[0029] For example, in other embodiments, different from the above-described embodiments, a receiving cavity is provided inside the cage body 1, the first supporting connecting member 4 is provided inside the receiving cavity, and an annular groove is provided on the outer circumferential surface of the cage body 1, and the second supporting connecting member 3 is provided inside the annular groove.

[0030] In addition, sink grooves are provided on the opposite surfaces of the two cage plates 11, and a receiving cavity for accommodating the first supporting connecting member 4 is formed between the two sink grooves. The sink grooves are located at the center of the cage plate 11. An annular step groove is provided on the outer circumferential side edge of the cage plate 11, and an annular groove is formed between the two annular step grooves. The cage plate 11 is disc-shaped, and the annular step groove correspondingly forms a bottom in the axial direction of the cage plate 11. The second supporting connecting member 3 is annular, and the second supporting connecting member 3 is installed in the annular groove, and the upper and lower ends of the second supporting connecting member 3 respectively abut against the bottoms of the two annular step grooves.

[0031] It should be noted that the above embodiments are only used to illustrate the present utility model, but the present utility model is not limited to the above embodiments. Any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present utility model all fall within the protection scope of the present utility model.

Claims

1. A thrust ball bearing retainer, characterized in that: The invention comprises a retainer body (1), the retainer body (1) comprising two retainer sheets (11) arranged opposite to each other, a first supporting connection member (4) and a second supporting connection member (3) being arranged between the two retainer sheets (11), a plurality of mounting holes being arranged on the retainer sheets (11), the mounting holes on the two retainer sheets (11) being opposite to each other and being combined into a pocket hole for positioning a steel ball (2), the steel ball (2) being mounted in the pocket hole, the first supporting connection member (4) being annular, the steel ball (2) being located between the first supporting connection member (4) and the second supporting connection member (3), the two retainer sheets (11) and the first supporting connection member (4) being connected by a first fastener (41), and the two retainer sheets (11) and the second supporting connection member (3) being connected by a second fastener (31).

2. A thrust ball bearing retainer according to claim 1, characterized in that: The first fastener (41) is a rivet or a bolt.

3. A thrust ball bearing retainer according to claim 1, characterized in that: The second fastener (31) is a rivet or a bolt.

4. A thrust ball bearing retainer according to claim 1, characterized in that: The mounting hole is a through hole, and the radius of the mounting hole is smaller than the radius of the steel ball (2).

5. The thrust ball bearing retainer according to claim 1, characterized in that: An accommodating cavity is provided in the retainer body (1), the first supporting connecting member (4) is located in the accommodating cavity, an annular groove is provided on the outer circumferential surface of the retainer body (1), and the second supporting connecting member (3) is located in the annular groove.

6. A thrust ball bearing retainer according to claim 5, characterized in that: Recessed grooves are provided on the opposing surfaces of the two retaining frame plates (11), and a receiving cavity for receiving the first supporting connecting member (4) is formed between the two recessed grooves.

7. A thrust ball bearing retainer according to claim 6, characterized in that: The recessed groove is located at the center of the retaining frame plate (11).

8. The thrust ball bearing retainer according to claim 6, characterized in that: An annular step groove is provided on the outer circumferential side of the retaining frame plate (11), and an annular groove is formed between the two annular step grooves.

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