Ball cage holder with lubricating oil groove structure

Abstract

The utility model relates to the technical field of automobile transmission system parts, in particular to a ball cage retainer with a lubricating oil groove structure, which comprises a retainer body, a plurality of ball storage grooves are equidistantly arranged on the periphery of the retainer body in a surrounding manner, and balls are movably mounted in the ball storage grooves. Lubricating structures are arranged on the retainer body and between the ball storage grooves in a matched mode, each lubricating structure is mainly composed of a retainer body, a lubricating oil groove system and a connecting structure, a main lubricating oil groove and an auxiliary lubricating oil groove of each lubricating structure are communicated in the circumferential direction and the axial direction and are connected through communicating holes, efficient lubrication is achieved, the lubricating and heat dissipation performance of the retainer is greatly improved, and the service life of the retainer is prolonged. The adaptability to different working conditions and vehicle types is enhanced, the maintenance cost is reduced, and the application prospect is wide.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive transmission system components, specifically a ball cage retainer with a lubricating oil groove structure. Background Technology

[0002] In automotive transmission systems, the CV cage plays a crucial role. Its primary function is to secure and guide the steel balls within the cage, ensuring smooth power transmission. However, existing CV cages have some significant shortcomings in practical use.

[0003] First, the steel balls experience intense friction with the cage during high-speed rotation. Conventional external lubrication systems, under complex conditions such as frequent vehicle starts and stops, high-speed driving, or adverse road conditions, cannot provide timely and even lubrication to all friction points, leading to insufficient lubrication. This not only exacerbates wear and shortens the lifespan of the CV cage cage but can also generate noise, affecting the driving experience. Second, the CV cage generates significant frictional heat during operation. If heat dissipation is inadequate, the internal temperature of the CV cage will rise sharply, affecting the performance of the lubricating oil, further aggravating wear, and even causing damage to CV cage components, seriously threatening the reliability and safety of the vehicle's transmission system. Furthermore, existing CV cage cage designs are relatively simple and cannot adapt to the diverse needs of different vehicle models and operating conditions, limiting their market application and failing to meet the ever-evolving demands of the automotive industry.

[0004] Therefore, it is necessary to design a ball cage retainer with a lubricating oil groove structure to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a ball cage retainer with a lubricating oil groove structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A ball cage retainer with a lubricating oil groove structure includes a retainer body, a plurality of ball storage grooves are equidistantly arranged around the periphery of the retainer body, ball balls are movably installed inside the ball storage grooves, and a lubrication structure is provided on the retainer body and between each ball storage groove;

[0008] The lubrication structure includes an oil inlet located between every two ball storage tanks and on the retainer body. The bottom of the oil inlet is connected to two main oil delivery pipes distributed on the left and right sides. The side of the main oil delivery pipe away from the oil inlet is provided with a main oil outlet that connects to the inside of the ball storage tank.

[0009] A secondary oil pipeline is also connected to the lower outer side of the main oil pipeline. An oil leakage through hole is provided between the main oil pipeline and the secondary oil pipeline for communication. The side of the secondary oil pipeline away from the main oil pipeline is arranged around the periphery of the ball storage tank, and several secondary oil outlets are provided between the secondary oil pipeline and the internal cavity of the ball storage tank.

[0010] As a preferred embodiment of this utility model, the retainer body is made of high-strength and wear-resistant alloy steel material. The tensile strength of the alloy steel material is not less than 800MPa and the yield strength is not less than 600MPa. The surface of the retainer body is treated with hard chrome plating, and the thickness of the chrome plating layer is 15-25μm.

[0011] As a preferred embodiment of this utility model, the cross-section of the ball storage groove is arc-shaped, and its curvature is adapted to the outer contour curvature of the ball, with the gap between the two controlled between 0.05-0.1mm.

[0012] As a preferred embodiment of this utility model, the inner diameter of the oil inlet is 3-5mm, and the inner wall of the oil inlet is smoothed with a surface roughness of no more than Ra0.8μm.

[0013] As a preferred embodiment of this utility model, both the main oil pipeline and the auxiliary oil pipeline are formed by precision casting process, the wall thickness of the pipeline is uniform and controlled between 1-1.5mm, and the inside of the pipeline is smooth.

[0014] As a preferred embodiment of this utility model, the diameter of the oil leakage through holes is 1-1.5mm, and they are evenly distributed on the main oil pipeline, with the distance between two adjacent oil leakage through holes being 5-8mm.

[0015] As a preferred embodiment of this utility model, the number of auxiliary oil outlets is 3-5, and they are evenly distributed around the periphery of the ball storage groove, with each auxiliary oil outlet having a diameter of 0.5-1mm.

[0016] As a preferred embodiment of this utility model, a guide slope is provided at the connection between the main oil outlet and the ball storage tank, and the inclination angle of the guide slope is 30°-45°.

[0017] As a preferred embodiment of this utility model, the top of the oil inlet is also sealed with an oil inlet sealing cap.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] In this utility model, a ball cage retainer with a lubricating oil groove structure achieves the following effects: 1. The retainer body is made of high-strength and wear-resistant alloy steel with a tensile strength of not less than 800MPa and a yield strength of not less than 600MPa, possessing excellent mechanical properties and capable of withstanding high-intensity loads under complex working conditions. The surface is hard chrome plated with a chrome layer thickness of 15-25μm, enhancing surface hardness and corrosion resistance, significantly extending the service life of the retainer body; 2. The cross-section of the ball storage groove is arc-shaped, matching the outer contour of the ball, with the gap between them controlled at 0.05-0.1mm, ensuring stable and flexible rolling of the ball within the groove, reducing operational sway, and improving power transmission accuracy and stability; 3. The inner diameter of the oil inlet is 3-5mm, with a smooth inner wall and a roughness not exceeding Ra0.8μm, reducing resistance to lubricating oil entry and ensuring smooth flow of lubricating oil into the lubrication structure; the main and auxiliary oil pipelines are formed using precision casting technology, with a uniform wall thickness of 1-1.5mm. The internal surface is smooth, ensuring stable lubricant delivery; the oil leakage through holes are 1-1.5mm in diameter and evenly distributed on the main oil pipeline with an adjacent spacing of 5-8mm, allowing lubricant to flow evenly from the main oil pipeline into the auxiliary oil pipeline; there are 3-5 auxiliary oil outlets, evenly distributed around the ball storage groove, with a diameter of 0.5-1mm, providing all-round lubrication for the contact area between the balls and the ball storage groove; the 30°-45° guide slope at the connection between the main oil outlet and the ball storage groove guides the lubricant to flow precisely to the key friction area; 4. The top of the oil inlet is sealed with an oil inlet sealing cap to prevent dust, impurities, etc. from entering the lubrication structure, ensuring the cleanliness of the lubricant and maintaining good lubrication effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0021] Figure 2 This is a top view of the structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the internal lubrication structure in the main view of this utility model.

[0023] In the diagram: 1. Holder; 2. Ball storage groove; 3. Ball bearing; 4. Lubrication structure; 41. Oil inlet; 42. Main oil pipeline; 43. Main oil outlet; 44. Secondary oil pipeline; 45. Oil leakage through hole; 46. Secondary oil outlet; 47. Oil port sealing cap. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are provided. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0026] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] For examples, please refer to Figure 1-3 This utility model provides a technical solution:

[0029] A ball cage retainer with a lubricating oil groove structure includes a retainer body 1, a plurality of ball storage grooves 2 are equidistantly arranged around the periphery of the retainer body 1, ball balls 3 are movably installed inside the ball storage grooves 2, and a lubrication structure 4 is provided on the retainer body 1 and between each ball storage groove 2.

[0030] The lubrication structure 4 includes an oil inlet 41 located between every two ball storage tanks 2 and on the retainer body 1. The bottom of the oil inlet 41 is connected to two main oil delivery pipes 42 distributed on the left and right sides. The main oil delivery pipe 42 is provided with a main oil outlet 43 connected to the inside of the ball storage tank 2 on the side away from the oil inlet 41.

[0031] A secondary oil pipeline 44 is also connected to the lower outer side of the main oil pipeline 42. An oil leakage through hole 45 is provided between the main oil pipeline 42 and the secondary oil pipeline 44 for connection. The side of the secondary oil pipeline 44 away from the main oil pipeline 42 is arranged around the periphery of the ball storage tank 2, and several secondary oil outlets 46 are provided between it and the internal cavity of the ball storage tank 2.

[0032] Specifically, the cage body 1 is made of high-strength and wear-resistant alloy steel with a tensile strength of not less than 800 MPa and a yield strength of not less than 600 MPa. The surface of the cage body 1 is treated with hard chrome plating, with a chrome plating layer thickness of 15-25 μm. The high-strength and wear-resistant alloy steel material (tensile strength not less than 800 MPa, yield strength not less than 600 MPa) gives the cage body 1 excellent mechanical properties, enabling it to withstand stress under complex working conditions. The hard chrome plating further enhances its surface hardness, wear resistance, and corrosion resistance, significantly extending the service life of the cage body 1 and ensuring the long-term stable operation of the ball cage.

[0033] Specifically, the cross-section of the ball storage groove 2 is arc-shaped, and its curvature matches the outer contour curvature of the ball 3, with the gap between the two controlled between 0.05-0.1mm. The ball 3 is installed one by one into the ball storage groove 2, which is equidistantly surrounding the outer periphery of the retainer 1, ensuring that the arc shape of the cross-section of the ball storage groove 2 matches the outer contour curvature of the ball 3, with the gap between the two controlled between 0.05-0.1mm. The matching curvature and precise gap control ensure that the ball 3 rolls flexibly and stably in the ball storage groove 2, reducing shaking and friction during operation, and improving the accuracy and stability of power transmission.

[0034] Specifically, the inner diameter of the oil inlet 41 is 3-5mm, and the inner wall of the oil inlet 41 is smoothed with a surface roughness not exceeding Ra0.8μm. The oil inlet 41 is installed on the retainer 1 between every two ball storage tanks 2, and the bottom of the oil inlet 41 is connected to the main oil delivery pipes 42 on the left and right sides. The inner diameter of the oil inlet 41 is 3-5mm, and the inner wall is smoothed (surface roughness not exceeding Ra0.8μm). The main oil delivery pipes 42 are formed using precision casting, with uniform wall thickness (1-1.5mm) and a smooth interior. The suitable inner diameter and smooth inner wall of the oil inlet 41 reduce the resistance to lubricating oil entry and ensure smooth flow of lubricating oil. The precision-cast main oil delivery pipes 42 ensure stable delivery of lubricating oil to the relevant parts of each ball storage tank 2, laying the foundation for good lubrication.

[0035] Specifically, both the main oil pipeline 42 and the auxiliary oil pipeline 44 are formed by precision casting, with uniform wall thickness controlled between 1-1.5mm and smooth interior. The auxiliary oil pipeline 44 is connected and installed on the outside of the main oil pipeline 42. The auxiliary oil pipeline 44 is also formed by precision casting, with uniform wall thickness (1-1.5mm) and smooth interior.

[0036] Specifically, the diameter of the oil leakage through holes 45 is 1-1.5mm, and they are evenly distributed on the main oil pipeline 42, with a distance of 5-8mm between two adjacent oil leakage through holes 45; oil leakage through holes 45 with a diameter of 1-1.5mm are opened between the main and auxiliary oil pipelines, and they are evenly distributed on the main oil pipeline 42 with an adjacent distance of 5-8mm. The oil leakage through holes 45 allow lubricating oil to flow evenly from the main oil pipeline 42 into the auxiliary oil pipeline 44, expanding the range of lubricating oil delivery, achieving more comprehensive lubrication coverage around the ball storage tank 2, and further improving the lubrication effect.

[0037] Specifically, there are 3-5 auxiliary oil outlets 46, which are evenly distributed around the periphery of the ball storage tank 2, and the diameter of each auxiliary oil outlet is 0.5-1mm; 3-5 auxiliary oil outlets 46 are evenly opened at the part of the auxiliary oil pipeline 44 that is far away from the main oil pipeline 42 and around the periphery of the ball storage tank 2, and the diameter of each auxiliary oil outlet is 0.5-1mm; the multiple evenly distributed auxiliary oil outlets 46 provide lubrication for the contact parts between the ball storage tank 2 and the ball 3 in all directions, ensuring that there are no dead corners in lubrication, further reducing wear, and ensuring the efficient operation of the ball cage cage.

[0038] Specifically, a guide slope is provided at the connection between the main oil outlet 43 and the ball storage tank 2, with an inclination angle of 30°-45°; on the side of the main oil pipeline 42 away from the oil inlet 41, a main oil outlet 43 is opened corresponding to the position of the ball storage tank 2, and a guide slope with an inclination angle of 30°-45° is provided at the connection between the main oil outlet 43 and the ball storage tank 2; the guide slope guides the lubricating oil to flow precisely to the key friction area between the balls 3 and the tank wall in the ball storage tank 2, thereby improving the lubrication effect, reducing wear, and extending the service life of the balls 3 and the ball storage tank 2.

[0039] Specifically, the top of the oil inlet 41 is also sealed with an oil port sealing cap 47. The oil port sealing cap 47 prevents dust, impurities and other contaminants from entering the lubrication structure, keeps the lubricating oil clean, maintains good lubrication performance, and ensures long-term stable operation of the lubrication system.

[0040] The working process of this utility model:

[0041] In manufacturing this ball cage cage with lubricating oil groove structure, a suitable high-strength aluminum alloy material is first selected, and the main body blank of the cage is made using precision casting technology. Next, CNC machining equipment is used to precisely machine the ball grooves, lubricating oil grooves, and connecting structures, ensuring that the dimensional accuracy and surface quality of each part meet the standards. After the main body of the cage is machined, advanced processes such as electrical discharge machining or laser machining are used to create the main lubricating oil groove, secondary lubricating oil groove, connecting holes, and oil outlet holes on the surface of the main body of the cage. The ball cage cage that has undergone the above processing is then anodized to improve the surface hardness, wear resistance, and corrosion resistance of the cage. After the ball cage cage is installed, the ball cage needs to be run under different speeds and loads to observe the flow of lubricating oil in the main and secondary lubricating oil grooves, as well as the working state of the steel balls and the cage. The oil output from the oil outlet holes is checked, and the lubricating oil groove system is fine-tuned according to the actual situation to ensure that the ball cage cage can work normally under various operating conditions.

[0042] Due to the large width and depth of the main lubricating oil groove, it possesses a strong storage capacity. Therefore, during the operation of the ball cage cage, the externally injected lubricating oil is first stored in the main lubricating oil groove in large quantities. Because the main lubricating oil groove is set along the circumferential and axial directions, it can quickly distribute the lubricating oil to various key areas, ensuring that the lubricating oil can reach all parts in a timely manner, providing a foundation for subsequent fine lubrication. The secondary lubricating oil grooves are distributed on both sides of the main lubricating oil groove and are connected to it through several connecting holes. The lubricating oil in the main lubricating oil groove flows into the secondary lubricating oil groove through the connecting holes. The secondary lubricating oil groove is relatively narrow and shallow. Its function is to further and evenly distribute the lubricating oil from the main lubricating oil groove to the entire cage surface, especially for the area where the steel ball contacts the cage. The secondary lubricating oil groove can accurately deliver the lubricating oil to these friction-prone parts, achieving all-round, multi-layer lubrication coverage, effectively reducing friction and wear.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ball cage cage with a lubricating oil groove structure, comprising a cage body (1), characterized in that: The retainer (1) has several ball storage grooves (2) equidistantly arranged around its periphery. Balls (3) are movably installed inside the ball storage grooves (2). A lubrication structure (4) is provided between the retainer (1) and each ball storage groove (2). The lubrication structure (4) includes an oil inlet (41) disposed between each two ball storage grooves (2) and located on the retainer (1). The bottom of the oil inlet (41) is connected to two main oil delivery pipes (42) distributed on the left and right sides. The main oil delivery pipe (42) is provided with a main oil outlet (43) connected to the inside of the ball storage groove (2) on the side away from the oil inlet (41). A secondary oil pipeline (44) is also connected to the lower outer side of the main oil pipeline (42). An oil leakage through hole (45) is provided between the main oil pipeline (42) and the secondary oil pipeline (44) for communication. The side of the secondary oil pipeline (44) away from the main oil pipeline (42) is arranged around the periphery of the ball storage tank (2), and several secondary oil outlets (46) are provided between it and the internal cavity of the ball storage tank (2).

2. The ball cage retainer with a lubricating oil groove structure according to claim 1, characterized in that: The retainer body (1) is made of high-strength and wear-resistant alloy steel material. The tensile strength of the alloy steel material is not less than 800MPa and the yield strength is not less than 600MPa. The surface of the retainer body (1) is treated with hard chrome plating, and the thickness of the chrome plating layer is 15-25μm.

3. The ball cage retainer with a lubricating oil groove structure according to claim 1, characterized in that: The cross-section of the ball storage groove (2) is arc-shaped, and its curvature is matched with the outer contour curvature of the ball (3), with the gap between the two controlled between 0.05-0.1mm.

4. A ball cage retainer with a lubricating oil groove structure according to claim 1, characterized in that: The inner diameter of the oil inlet (41) is 3-5 mm, and the inner wall of the oil inlet (41) is smoothed, with a surface roughness of no more than Ra0.8 μm.

5. A ball cage retainer with a lubricating oil groove structure according to claim 1, characterized in that: Both the main oil pipeline (42) and the auxiliary oil pipeline (44) are formed by precision casting. The pipe wall thickness is uniform and controlled between 1-1.5 mm, and the inside of the pipe is smooth.

6. A ball cage retainer with a lubricating oil groove structure according to claim 1, characterized in that: The diameter of the oil leakage through holes (45) is 1-1.5 mm, and they are evenly distributed on the main oil pipeline (42), with a distance of 5-8 mm between two adjacent oil leakage through holes (45).

7. A ball cage retainer with a lubricating oil groove structure according to claim 1, characterized in that: The number of auxiliary oil outlets (46) is 3-5, and they are evenly distributed around the periphery of the ball storage groove (2). The diameter of each auxiliary oil outlet is 0.5-1mm.

8. A ball cage retainer with a lubricating oil groove structure according to claim 1, characterized in that: A guide slope is provided at the connection between the main oil outlet (43) and the ball storage tank (2), and the inclination angle of the guide slope is 30°-45°.

9. A ball cage retainer with a lubricating oil groove structure according to claim 1, characterized in that: The top of the oil inlet (41) is also sealed with an oil inlet sealing cap (47).

Images