Oil-guiding circulating type ball cage retainer

Abstract

The application discloses a kind of oil guide circulation type ball cage retainer, including the retainer body with concentric inner spherical surface and outer spherical surface structure, several window holes are evenly provided in the circumferential direction of retainer body, window hole is provided with parallel side wall parallel to the end surface of retainer body, the surface of window beam on both sides of window hole is symmetrically provided with convex rib structure closely combined with the outer spherical surface of retainer body, adjacent convex rib structure is connected by oil guide structure, and the oil guide structure between convex rib is designed to be located above the parallel side wall of window hole, can accurately guide lubricating grease to the contact interface of rolling element and window hole. This directional flow avoids the random diffusion of lubricating grease in the retainer, ensures that the key contact parts always have sufficient lubricating grease, so as to form a stable and effective lubricating oil film, significantly reduces the friction coefficient between rolling element and window hole, reduces wear.

Description

Technical Field

[0001] This application belongs to the field of ball cage cages, and particularly relates to an oil-circulating ball cage cage. Background Technology

[0002] In automotive transmission systems, the ball-cage constant velocity joint is a core component ensuring power transmission. Whether the vehicle is traveling in a straight line, turning, or driving on complex and changing road conditions, it ensures stable and efficient torque transmission between the drive shaft and the wheels, effectively guaranteeing the smoothness and reliability of the power transmission process.

[0003] As a key component of the ball cage universal joint, the performance and condition of the ball cage play a crucial and decisive role in the working efficiency of the universal joint and even the entire transmission system. During the operation of the ball cage universal joint, the balls continuously roll within the approximately rectangular pockets of the ball cage. During this process, the balls frequently come into contact with and collide with the upper and lower edges of the pockets. If lubrication conditions are inadequate, the frequency and force of direct contact between the rolling elements and the upper and lower edges of the pockets will significantly increase. Considering that these areas are already subjected to significant contact stress, if there is a lack of sufficient lubrication to reduce friction, the wear rate will accelerate rapidly. As wear continues, the shape of the pockets will change; the originally regular shape may become irregular, and the rolling of the balls within them will no longer be smooth. At the same time, wear debris may also enter the pockets, hindering the normal movement of the balls. Therefore, the existing technology needs further improvement and enhancement. Utility Model Content

[0004] This invention provides an oil-circulating ball cage retainer to at least solve or alleviate one or more technical problems in the prior art, or at least provide a beneficial alternative.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An oil-circulating ball cage cage includes a cage body with concentric inner and outer spherical structures. The cage body has a plurality of windows evenly distributed along the circumference. Each window has a parallel sidewall parallel to the end face of the cage body. The surface of the window beams on both sides of the window has symmetrically arranged rib structures that fit tightly against the outer spherical surface of the cage body. Adjacent rib structures are connected by an oil-guiding structure located above the parallel sidewalls of the window, which guides the lubricating grease to flow in a directional manner to the contact interface between the rolling element and the window to form a stable and effective lubricating oil film, ensuring the reliable operation of the ball cage cage.

[0007] This application describes an oil-circulating ball cage cage with symmetrically arranged rib structures on the surface of the window beams on both sides of the window opening, which closely fit the outer spherical surface of the cage body. These rib structures not only increase the strength of the window beams and improve the overall load-bearing capacity of the cage, but also effectively disperse the force exerted by the rolling elements on the edge of the window opening during the operation of the ball cage universal joint, reducing stress concentration at the edge of the window opening and lowering the risk of window opening deformation and damage. An oil-guiding structure is designed between the ribs, positioned above the parallel sidewall of the window opening, precisely guiding the lubricating grease to the contact interface between the rolling elements and the window opening. This directional flow method prevents the lubricating grease from spreading randomly within the cage, ensuring that critical contact areas always have sufficient lubricating grease, thereby forming a stable and effective lubricating oil film, significantly reducing the coefficient of friction between the rolling elements and the window opening, and reducing wear.

[0008] In a preferred implementation, the oil guiding structure is an arc-shaped oil guiding plate, and an oil passage gap is formed between the arc-shaped oil guiding plate and the outer spherical surface of the cage body. The cross-sectional shape of the oil passage gap gradually narrows towards the window opening.

[0009] The wider section of the oil passage can hold more lubricating oil, which is equivalent to setting up a "temporary oil reservoir" on the side of the cage near the window opening. The "temporary oil reservoir" can store excess lubricating oil. When the lubricating oil flows from the wider section to the gradually narrowing oil passage, the narrowing oil passage will cause the lubricating oil to generate a certain pressure during the flow. This pressure helps to press the lubricating oil more tightly into the contact area between the rolling element and the window opening, forming a more stable and effective lubricating oil film.

[0010] In a preferred implementation, the curvature of the arc-shaped oil guide plate is adapted to the curvature of the outer spherical surface of the cage body.

[0011] In a preferred implementation, the arc-shaped oil guide plate is distributed in a mirror-symmetrical manner relative to the center of the window hole.

[0012] In a preferred implementation, the height of the arc-shaped oil guide plate protruding from the outer spherical surface is less than the height of the rib structure protruding relative to the outer spherical surface.

[0013] In a preferred implementation, circumferentially adjacent arc-shaped oil guide plates are located at the same height.

[0014] In a preferred implementation, the rib structure extends from one end of the cage body to the other end.

[0015] In the preferred implementation, the width of the rib structure is less than or equal to the width of the window beam.

[0016] In a preferred implementation, the outline of the window is formed by a central rectangle and semicircles on both sides of the rectangle. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain this application and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic three-dimensional structural diagram of one embodiment of the oil-guided circulating ball cage cage of this application is shown;

[0019] Figure 2 This application is illustrated. Figure 1 An enlarged structural schematic diagram of one embodiment of part A in the diagram;

[0020] Figure 3 A schematic cross-sectional structural diagram of one embodiment of the oil-guided circulating ball cage cage of this application is shown;

[0021] Label Explanation:

[0022] 1. Cage body; 10. Window opening; 100. Parallel sidewall; 2. Rib structure; 3. Arc-shaped oil guide plate; 30. Oil passage gap. Detailed Implementation

[0023] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit and scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0024] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In this utility model, unless otherwise expressly specified and limited, the first feature being "upper" or "lower" than the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies at the connection point are not connected by an intermediate structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0026] In this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0027] The present invention will now be described with reference to the accompanying drawings.

[0028] The specific solution adopted is as follows:

[0029] like Figure 1-3 As shown, this utility model provides an oil-circulating ball cage cage, including a cage body 1 with concentric inner and outer spherical structures. The cage body 1 has a plurality of windows 10 evenly opened along the circumferential direction. The windows 10 have parallel sidewalls 100 parallel to the end face of the cage body 1. The window beams on both sides of the windows 10 are symmetrically provided with convex rib structures 2 that are tightly fitted to the outer spherical surface of the cage body 1. Adjacent convex rib structures 2 are connected by an oil-guiding structure. The oil-guiding structure is located above the parallel sidewalls 100 of the windows 10, guiding the lubricating grease to flow in a directional direction to the contact interface between the rolling element and the windows 10, so as to form a stable and effective lubricating oil film and ensure the reliable operation of the ball cage cage.

[0030] This application presents an oil-guided circulating ball cage cage with an oil-guiding structure positioned above the parallel sidewall 100 of the aperture 10. This structure guides lubricating grease to the contact interface between the rolling elements and the aperture 10. This directional flow prevents the lubricating grease from spreading randomly within the cage, ensuring sufficient lubrication at critical contact points. This forms a stable and effective lubricating film, significantly reducing the coefficient of friction between the rolling elements and the aperture 10, and minimizing wear. Symmetrical rib structures 2, which closely fit the outer spherical surface of the cage body 1, are provided on the surface of the aperture beams on both sides of the aperture 10. These rib structures 2 not only increase the strength of the aperture beams and improve the overall load-bearing capacity of the cage, but also effectively disperse the force exerted by the rolling elements on the edges of the aperture 10 during operation of the ball cage universal joint, reducing stress concentration at the edges of the aperture 10 and lowering the risk of deformation and damage to the aperture 10.

[0031] As a preferred embodiment of this application, the oil guiding structure is an arc-shaped oil guiding plate 3, and an oil passage gap 30 is formed between the arc-shaped oil guiding plate 3 and the outer spherical surface of the cage body 1. The cross-sectional shape of the oil passage gap 30 gradually narrows towards the window hole 10.

[0032] The wider portion of the oil passage 30 can hold more lubricating oil, which is equivalent to setting up a "temporary oil reservoir" on the side of the cage near the window 10. When the lubricating oil flows from the wider portion to the gradually narrowing oil passage 30, the narrowing oil passage 30 will generate a certain pressure in the lubricating oil during the flow. This pressure helps to press the lubricating oil more tightly into the contact area between the rolling element and the window 10. With movement, the lubricating oil circulates, forming a more stable and effective lubricating oil film on the rolling element and the window wall. Furthermore, during vehicle operation, the ball cage cage is subjected to centrifugal force, and the lubricating oil tends to be thrown outward. The shape design of the arc-shaped oil guide plate 3 can utilize the direction of centrifugal force to further enhance the guiding effect of the lubricating oil. Under the action of centrifugal force, the lubricating oil flows more smoothly along the oil guide plate instead of splashing randomly, improving the utilization rate of the lubricating oil.

[0033] Meanwhile, the rapid flow of lubricating oil in the oil passage gap 30 itself has a certain heat dissipation effect, and the pressure generated by the gradually narrowing oil passage gap 30 can accelerate the flow of lubricating oil and enhance the heat dissipation effect.

[0034] See Figure 1 The arc-shaped oil guide plate 3 is designed to match the curvature of the outer spherical surface of the cage body 1. This matching curvature design is not only more aesthetically pleasing, but also allows the oil guide plate to evenly guide the lubricating grease along the outer spherical surface of the cage body 1. During flow, the lubricating grease can evenly cover the entire cage surface, ensuring that all contact points between the rolling elements and the aperture 10 are adequately lubricated. Because the arc-shaped oil guide plate 3 matches the curvature of the outer spherical surface of the cage body 1, the interaction between the two enhances the overall rigidity of the cage and resists deformation.

[0035] Furthermore, the arc-shaped oil guide plate 3 is distributed in a mirror-symmetrical manner relative to the center of the window hole 10, and see [reference]. Figure 1 The circumferentially adjacent arc-shaped oil guide plates 3 are located at the same height.

[0036] The mirror-symmetric and uniformly height-distributed arrangement of the arc-shaped oil guide plates 3 ensures a more uniform mass distribution along the circumference of the cage. The oil guide plates symmetrically arranged on both sides of each window 10 correspond in mass, shape, and position, enabling the entire cage to operate more smoothly during rotation and reducing mechanical wear and noise caused by imbalance.

[0037] As a preferred embodiment of this application, see [link to application]. Figure 2 The height of the arc-shaped oil guide plate 3 protruding from the outer spherical surface is less than the height of the rib structure 2 protruding relative to the outer spherical surface.

[0038] During the operation of the ball cage cage, the rolling elements frequently roll and slide within the aperture 10. If the arc-shaped oil guide plate 3 protrudes too high, approaching or even exceeding the rib structure 2, it may collide with the rolling elements, ribs, or other components under high-speed rotation or complex operating conditions, leading to damage. By limiting the height of the oil guide plate to be lower than the rib structure 2, this interference risk is effectively avoided, ensuring the stable operation of the ball cage cage.

[0039] In a preferred embodiment of this application, the rib structure 2 extends from one end of the cage body 1 to the other end to form a longitudinal reinforcing rib, thereby increasing the radial stiffness of the cage, effectively resisting deformation caused by centrifugal force and external impact loads, and ensuring transmission accuracy.

[0040] Furthermore, the width of the rib structure 2 is less than or equal to the width of the window beam. When the rib and window beam are in place, they form a "coplanar support" structure. The stiffness of the window beam is increased due to the additional support from the rib. By limiting the width of the rib, redundant material can be reduced, thus lowering the cage mass while maintaining strength. When the width of the rib structure 2 is greater than the width of the window beam, it will partially obstruct the pockets. These pockets are crucial channels for lubricating grease to enter the contact area between the rolling elements and the cage. Excessively wide ribs will obstruct the pockets, preventing lubricating grease from fully covering the contact surface. The edges of the ribs will also hinder grease flow, leading to insufficient lubrication in certain areas.

[0041] In a preferred embodiment of this application, the outline of the window 10 is composed of a central rectangle and semicircles on both sides of the rectangle.

[0042] The rectangular section provides linear guidance for the rolling elements, ensuring their stable axial movement; the semi-circular sides conform to the contours of the rolling elements, maximizing the contact area and reducing stress concentration. The semi-circular design increases the pocket volume within a limited space, which, compared to a pure rectangular design, increases lubricant storage capacity and extends lubrication intervals.

[0043] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0044] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An oil-circulating ball cage retainer, comprising a retainer body having concentric inner and outer spherical structures, wherein the retainer body is uniformly provided with a plurality of windows along the circumferential direction, and the windows are provided with parallel sidewalls parallel to the end faces of the retainer body, characterized in that, The surface of the window beam on both sides of the window opening is symmetrically provided with convex rib structures that fit tightly against the outer spherical surface of the cage body. Adjacent convex rib structures are connected by an oil guiding structure. The oil guiding structure is located above the parallel side wall of the window opening, guiding the lubricating grease to flow in a directional direction to the contact interface between the rolling element and the window opening, so as to form a stable and effective lubricating oil film and ensure the reliable operation of the ball cage cage.

2. The oil-circulating ball cage retainer according to claim 1, characterized in that, The oil guiding structure is an arc-shaped oil guiding plate. An oil passage gap is formed between the arc-shaped oil guiding plate and the outer spherical surface of the cage body. The cross-sectional shape of the oil passage gap gradually narrows towards the window opening.

3. The oil-circulating ball cage retainer according to claim 2, characterized in that, The curvature of the arc-shaped oil guide plate is adapted to the curvature of the outer spherical surface of the cage body.

4. The oil-circulating ball cage retainer according to claim 2, characterized in that, The arc-shaped oil guide plates are distributed in a mirror-symmetric manner relative to the center of the window opening.

5. The oil-circulating ball cage retainer according to claim 2, characterized in that, The height of the arc-shaped oil guide plate protruding from the outer spherical surface is less than the height of the rib structure protruding relative to the outer spherical surface.

6. The oil-circulating ball cage retainer according to claim 2, characterized in that, The circumferentially adjacent arc-shaped oil guide plates are at the same height.

7. The oil-circulating ball cage retainer according to claim 1, characterized in that, The rib structure extends from one end of the cage body to the other end.

8. The oil-circulating ball cage retainer according to claim 1, characterized in that, The width of the ribbed structure is less than or equal to the width of the window beam.

9. The oil-circulating ball cage retainer according to claim 1, characterized in that, The outline of the window opening is formed by a central rectangle and semicircles on both sides of the rectangle.

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