High-speed V-shaped retainer suitable for deep groove ball bearing

Abstract

The utility model discloses a high-speed V-shaped retainer suitable for a deep groove ball bearing, which is applied to the technical field of deep groove ball bearings, and is characterized by comprising a retainer base body with a V-shaped structure and a plurality of pocket holes which are uniformly formed in the retainer base body at intervals along the circumferential direction and are used for accommodating rolling balls, the retainer base body is formed by integrally combining two conical blades extending from the center, and a plurality of radial supporting plates used for providing additional support for the conical blades are evenly and fixedly arranged between the conical blades in the circumferential direction at intervals. The technical effect is that deformation caused by centrifugal force is reduced.

Description

Technical Field

[0001] This utility model relates to the field of deep groove ball bearing technology, and in particular to a high-speed V-shaped cage suitable for deep groove ball bearings. Background Technology

[0002] In recent years, the performance of deep groove ball bearings used in the power systems of new energy vehicles has improved. The relative rotational speeds of the outer and inner rings, as well as the cage rotational speed, have increased, leading to increased centrifugal force on the cage and making its elastic deformation no longer negligible. As the cage rotational speed increases, the centrifugal force also increases, causing radial elastic deformation of the elastic elements—that is, the top of the cage pocket displaces outward in the diametrical direction. During this elastic deformation, the main body of the cage also undergoes torsional elastic deformation, resulting in friction between the outer circumference of the cage and the inner surface of the outer ring. This increases the torque required for the relative rotation of the outer and inner rings. Simultaneously, the heat generated during operation increases temperature rise, abnormal noise, and wear on the cage surface. In extreme cases, this can lead to negative consequences such as cage breakage and bearing failure. In particular, when the aforementioned rotating machinery is used under high-temperature conditions, such as in the engine compartment of a car, the rigidity of the cage decreases, making it more prone to elastic deformation. Therefore, it is necessary to improve the existing cage structure in deep groove ball bearings to address this problem. Utility Model Content

[0003] The purpose of this invention is to provide a high-speed V-shaped cage suitable for deep groove ball bearings, which has the advantage of reducing deformation caused by centrifugal force.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a high-speed V-shaped cage suitable for deep groove ball bearings, comprising a cage base with a V-shaped structure and a plurality of pockets evenly spaced along the circumferential direction on the cage base for accommodating rolling balls. The cage base is integrally formed based on two conical blades extending from the center. A plurality of radial support plates are fixedly provided between the conical blades at even intervals along the circumferential direction to provide additional support for the conical blades.

[0005] The present invention is further configured such that: a flow groove for lubricating oil to flow is formed between the conical blades, and the flow groove is connected to the pocket hole.

[0006] The present invention is further configured such that: at one end of the retainer base away from the flow groove, there is a crown-shaped limiting part integrally formed with the pocket hole for limiting the ball from falling out.

[0007] The present invention is further configured such that adjacent crown-shaped limiting portions are integrally merged onto the conical blade based on a connecting portion.

[0008] The present invention is further configured such that the radius of curvature of the inner surface of the pocket opening is greater than the radius of curvature of the rolling surface of the ball.

[0009] The present invention is further configured such that the cage substrate is made of polyamide resin, polyether ether ketone (PEEK), or polyarylether ether ketone (PAEK).

[0010] In summary, this utility model has the following beneficial effects:

[0011] 1. By setting the cage base to be integrally composed of two conical blades extending from the center and forming a flow groove between the conical blades for the flow of lubricating oil, the mass of the cage is greatly reduced, thereby reducing the centrifugal force and thus greatly reducing the cage deformation caused by the centrifugal force. At the same time, the flow groove also facilitates the flow of lubricating oil to lubricate the cage and the balls, reducing heat generation and improving heat dissipation efficiency, thereby suppressing the cage deformation due to heat.

[0012] 2. At the same time, multiple radial support plates are set between the two conical blades along the circumferential direction. The radial support plates provide additional support for the conical blades, thereby increasing the overall rigidity of the cage base. In particular, it reduces the centrifugal deformation of the outer conical blades and further prevents the cage from contacting the inner surface of the outer ring, thus reducing the generation of heat. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0014] Figure 2 This is a schematic diagram of the radial support plate and flow channel in Example 1;

[0015] Figure 3 This is a cross-sectional view of the overall structure of Embodiment 1;

[0016] Figure 4 This is a schematic diagram of the overall structure of Example 2.

[0017] Reference numerals: 1. Cage base; 11. Conical blade; 12. Flow channel; 13. Crown-shaped limiting part; 14. Connecting part; 2. Pocket pocket; 3. Radial support plate. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings.

[0019] Example 1:

[0020] refer to Figures 1 to 3 A high-speed V-shaped cage for deep groove ball bearings includes a V-shaped cage base 1 and several pockets 2 evenly spaced along the circumferential direction on the cage base 1 for accommodating rolling balls. The cage base 1 is integrally formed based on two tapered blades 11 extending from the center. The tapered blades 11 are inclined towards the center, with the outer tapered blade 11 having a greater inclination than the inner tapered blade 11. Several radial support plates 3 are evenly spaced along the circumferential direction between the tapered blades 11 to provide additional support for them. The radial support plates 3 provide additional support for the tapered blades 11, thereby increasing the capacity of the cage base 1. The overall rigidity is improved, especially reducing the centrifugal deformation of the outer conical blades 11 during high-speed rotation. The radial support plate 3 is positioned in the middle of the adjacent pocket holes 2, thus providing the most stable support effect. A flow groove 12 for lubricating oil is formed between the conical blades 11. The flow groove 12 is connected to the pocket holes 2. By setting the flow groove 12, the mass of the cage is greatly reduced, thereby reducing the centrifugal force and thus greatly reducing the cage deformation caused by the centrifugal force. At the same time, the flow groove 12 also facilitates the flow of lubricating oil to lubricate the cage and the balls, reducing heat generation and improving heat dissipation efficiency, thereby suppressing the cage deformation due to heat. In this embodiment, the cage substrate 1 is made of polyamide resin, polyether ether ketone (PEEK), or polyarylether ether ketone (PAEK). The polyamide resin may preferably include, but is not limited to, polytetramethylene hexamethylenediamine (PA46), polyhexamethylenediamine adipate (PA56), polyhexamethylenediamine adipate (PA66), polydecanediamine adipic anhydride (PA410), polydecanediamine hexamethylenediamine (PA510), poly(terephthalamide nonyldiamine) (PA9T), or polyphenylene dicarbonyldecanediamine (PA10T).

[0021] refer to Figures 2 to 3 Specifically, the end of the retainer base 1 away from the flow channel 12 is provided with a crown-shaped limiting part 13 integrally formed with the pocket hole 2 to restrict the ball from falling out. The crown-shaped limiting part 13 coincides with the inner surface of the pocket hole 2 and the concave surface is a partially spherical surface with a single center of curvature. The radius of curvature of the inner surface of the pocket hole 2 is slightly larger than the radius of curvature of the rolling surface of the ball, so that the ball can maintain rolling motion within the pocket hole 2.

[0022] Example 2:

[0023] refer to Figure 4Compared to Embodiment 1, adjacent crown limiting portions 13 are integrally merged onto the conical blade 11 based on connecting portions 14. The connecting portions 14 and crown limiting portions 13 are integrally formed, thereby providing additional rigid support for the structure of the cage. However, compared to Embodiment 2, Embodiment 1 reduces the overall weight by reducing the setting of connecting portions 14.

[0024] Brief description of the usage process: By setting the cage base 1 to be integrally composed of two conical blades 11 extending from the center and forming a flow groove 12 between the conical blades 11 for the flow of lubricating oil, the mass of the cage is greatly reduced, thereby reducing the centrifugal force and thus greatly reducing the cage deformation caused by the centrifugal force. At the same time, the radial support plate 3 provides additional support for the conical blades 11, thereby increasing the overall rigidity of the cage base 1, especially reducing the centrifugal deformation of the outer conical blades 11, and further preventing the cage from contacting the inner surface of the outer ring and causing friction.

[0025] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment that make creative contributions as needed, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A high-speed V-shaped cage suitable for deep groove ball bearings, characterized in that, It includes a V-shaped cage base (1) and several pockets (2) evenly spaced along the circumferential direction on the cage base (1) for accommodating rolling balls. The cage base (1) is integrally formed by two conical blades (11) extending from the center. Several radial support plates (3) are fixedly provided between the conical blades (11) evenly spaced along the circumferential direction to provide additional support for the conical blades (11).

2. A high-speed V-shaped cage for deep groove ball bearings according to claim 1, characterized in that, A flow groove (12) for lubricating oil to flow is formed between the conical blades (11), and the flow groove (12) is connected to the pocket hole (2).

3. A high-speed V-shaped cage for deep groove ball bearings according to claim 2, characterized in that, The retainer base (1) has a crown-shaped limiting part (13) at one end away from the flow groove (12), which is integrally formed with the pocket hole (2) to limit the ball from falling out.

4. A high-speed V-shaped cage for deep groove ball bearings according to claim 3, characterized in that, The adjacent crown-shaped limiting portions (13) are integrally merged onto the conical blade (11) based on the connecting portion (14).

5. A high-speed V-shaped cage for deep groove ball bearings according to claim 1, characterized in that, The inner surface radius of curvature of the pocket (2) is greater than the rolling surface radius of curvature of the ball.

6. A high-speed V-shaped cage for deep groove ball bearings according to claim 1, characterized in that, The cage substrate (1) is made of polyamide resin or polyether ether ketone (PEEK) or polyarylether ether ketone (PAEK).

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