A ball bearing retainer

Abstract

The present invention discloses a novel ball bearing retainer structure, comprising a retainer body having an overall annular shape. The retainer body is bent to form a plurality of ball pockets, with adjacent ball pockets arranged symmetrically and crosswise. The novel ball bearing retainer structure of the present invention, by bending the retainer body to form the ball pockets and symmetrically and crosswisely arranging adjacent ball pockets, eliminates the problem of cracks or even breakage at the connection between the ball pockets and the retainer body, which occurs in the prior art.

Description

Technical Field

[0001] The present invention relates to a bearing, and more particularly to a ball bearing retainer with a novel structure. Background Art

[0002] The bearing cage is a crucial component of rolling bearings, significantly impacting their performance and lifespan. The primary function of a ball bearing cage is to evenly distribute the steel balls and guide them within the bearing raceway. There are many types of bearing cages, but plastic cages are widely used due to their light weight, excellent toughness, self-lubricating properties, and ease of fabrication into complex structures.

[0003] However, the structure of ordinary plastic cages still has many shortcomings, especially the weak positions such as the lock mouth and the bottom of the pocket, which are easily affected by the impact of the steel ball, centrifugal force and other factors during the operation of the bearing, resulting in cracks or even breakage, leading to bearing failure. Figure 1 In addition, ordinary plastic cages do not have a structure for storing grease, which may result in poor bearing lubrication.

[0004] Currently, there is a patent number 201810036426.0, entitled "Retainer and Ball Bearing for Ball Bearings," which discloses a retainer structure comprising a plurality of double claws extending from the retainer body and evenly distributed circumferentially, and then formed into an arc-shaped retaining portion by the double claws for circumferentially retaining the rolling element. In this way, the retainer does not need to be provided with rivet holes that reduce strength, and thus has higher strength and reliability. However, the retainer of this structure only increases the strength and reliability of the retainer body. During actual operation, the connection between the double claws and the retainer body is still prone to cracks or even breakage. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the object of the present invention is to provide a ball bearing retainer with a new structure having higher strength and reliability.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a ball bearing retainer with a new structure, including a retainer body, which is annular as a whole, and the main structure of the retainer body is bent to form a plurality of ball pockets, and two adjacent ball pockets are cross-symmetrically arranged.

[0007] As a further improvement of the present invention, the ball pocket includes a ball pocket side and a ball pocket bottom, the ball pocket side and the ball pocket bottom enclose the ball pocket, and the ends of the ball pocket side and the ball pocket bottom are interconnected to form a retaining frame body.

[0008] As a further improvement of the present invention, a transition fillet is provided between the side edge and the bottom edge of the ball pocket, and a ball contact surface is provided on the side edge and the bottom edge of the ball pocket. When the ball is set in the ball pocket, an oil storage space is formed between the spherical surface of the ball and the transition fillet.

[0009] As a further improvement of the present invention, the bottom edge of the ball pocket is arc-shaped, and arc-shaped surfaces are provided on the opposite sides of the side of the ball pocket. The arc-shaped surfaces and the arc-shaped surfaces of the bottom edge of the ball pocket are combined to form the ball pocket, wherein the side edge of the ball pocket forms a clamping edge for clamping the ball, and the clamping edge is integrally arranged with the arc-shaped surface.

[0010] As a further improvement of the present invention, the clamping edge is provided with rounded corners.

[0011] The beneficial effect of the present invention is that by setting a retainer body and then bending the main structure of the retainer body to form a ball pocket, and making the two adjacent ball pockets cross-symmetrical, the main structure of the retainer body can be used as the double claws that constitute the ball pocket, and the two side edges of the cross-symmetrically distributed ball pockets complement the side shapes of the ball pockets in the adjacent position, which can effectively save space and enhance the strength of the retainer side edges. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the plastic retainer of the present invention;

[0013] Figure 2 Schematic diagram of the force of the plastic retainer of the present invention

[0014] Figure 3 It is a structural diagram of a plastic cage in the prior art;

[0015] Figure 4 Schematic diagram of the force of the plastic retainer in the prior art. DETAILED DESCRIPTION

[0016] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0017] like Figure 3 As shown, ordinary plastic cages are composed of spherical pockets, and the locking holes of all pockets are located on the same side of the cage, such as Figure 4 As shown in the figure, when the bearing is running, the ball pocket lock mouth of the ordinary plastic cage may be subjected to the impact force of the steel ball on both sides, and a bending moment is generated at the bottom of the ball pocket. At the same time, the bottom of the pocket is also subjected to the centrifugal force generated by high-speed rotation, and stress concentration occurs at the thinnest part of the pocket. Therefore, under such stress conditions, fatigue cracks are easily generated on both sides of the cage lock mouth and the pocket bottom, and then fracture, leading to bearing failure. Figure 1As shown in FIG. 1 , a new type of ball bearing cage of this embodiment includes a cage body 1, which is annular in shape. The main structure of the cage body 1 is bent to form a plurality of ball pockets 2. Two adjacent ball pockets 2 are arranged crosswise and symmetrically. The contact point between the side of the cage body 1 and the steel ball coincides with the bottom edge of the adjacent ball pocket 2. Figure 2 As shown, during bearing operation, the impact force of the steel balls on the retainer body 1 is converted into pressure on the bottom edge of the adjacent ball pocket 2, thereby preventing bending moments from occurring on the bottom edge of the ball pocket 2. Furthermore, the uniform wall thickness of the bottom edge of the ball pocket 2 reduces stress concentration when subjected to the centrifugal force generated by high-speed rotation.

[0018] As a specific embodiment of the improvement, the ball pocket 2 includes a ball pocket side 21 and a ball pocket bottom 22. The ball pocket side 21 and the ball pocket bottom 22 enclose the ball pocket 2. The ends of the ball pocket side 21 and the ball pocket bottom 22 are interconnected to form the retaining frame body 1. Through the setting of the above structure, a triangular ball pocket structure can be effectively formed.

[0019] As a specific embodiment of the improvement, a transition fillet is provided between the side edge 21 of the ball pocket and the bottom edge 22 of the ball pocket, and a ball contact surface is provided on the side edge 21 of the ball pocket and the bottom edge 22 of the ball pocket. When the ball is set in the ball pocket 2, an oil storage space is formed between the spherical surface of the ball and the transition fillet. Through the setting of the above structure, it is possible to effectively form an oil storage tank in the ball pocket 2, so that the retaining frame has an oil storage function, which greatly increases the lubricity of the retaining frame.

[0020] As an improved specific embodiment, the bottom edge 22 of the ball pocket is arc-shaped, and arc-shaped surfaces are provided on the opposite sides of the side edge 21 of the ball pocket. The arc-shaped surfaces and the arc-shaped surfaces of the bottom edge 22 of the ball pocket are combined to form the ball pocket 2, wherein the side edge 21 of the ball pocket forms a clamping edge for clamping the ball, and the clamping edge is integrated with the arc-shaped surface. Through the setting of the above structure, the ball can be effectively confined in the ball pocket 2.

[0021] As a specific implementation of the improvement, the card edge is provided with rounded corners. By setting the rounded corners, the problem of cracks or damage to the card edge due to operation impact can be avoided.

[0022] In summary, the retainer of this embodiment uses the method of bending the main decoupling strands of the retainer body 1 to form a ball pocket, thereby changing the force form of the retainer, increasing the structural strength of the retainer, and thus improving the performance and life of the retainer.

[0023] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A new type of ball bearing cage, characterized by: The invention comprises a retainer body (1), wherein the retainer body (1) is annular in shape as a whole, and the main structure of the retainer body (1) is bent to form a plurality of ball pockets (2), and two adjacent ball pockets (2) are arranged crosswise and symmetrically; the ball pockets (2) comprise ball pocket side edges (21) and ball pocket bottom edges (22), and the ball pocket side edges (21) and the ball pocket bottom edges (22) enclose the ball pocket (2), and the ends of the ball pocket side edges (21) and the ball pocket bottom edges (22) are connected to each other to form the retainer body (1); there is a The ball pocket (2) has a transition fillet, and a ball contact surface is provided on the side edge (21) and the bottom edge (22) of the ball pocket. When the ball is set in the ball pocket (2), an oil storage space is formed between the spherical surface of the ball and the transition fillet, and the ball pocket (2) forms a triangular structure; the bottom edge (22) of the ball pocket is in an arc shape, and arc surfaces are provided on opposite sides of the side edge (21) of the ball pocket. The arc surfaces and the arc surface of the bottom edge (22) of the ball pocket form the ball pocket (2), wherein the side edge (21) of the ball pocket forms a clamping edge for clamping the ball, and the clamping edge and the arc surface are provided as a whole; the clamping edge has a fillet.

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