Plastic retainer of double-row tapered roller automobile hub bearing

Abstract

The utility model discloses a plastic retainer for a double-row tapered roller automobile hub bearing, which relates to the technical field of retainers and comprises a top plate and a bottom plate, and support plates are annularly connected between the top plate and the bottom plate at equal intervals. According to the utility model, the flow path of lubricating oil in the retainer is increased through the design of the spiral oil storage groove, so that the lubricating oil can stay in the retainer for a longer time in the operation process of the bearing, thereby providing continuous and stable lubrication for the contact surface between the roller and the retainer, reducing abrasion and improving the service life of the bearing. The spiral structure is beneficial to uniform distribution of lubricating oil in the retainer, the situation that the lubricating oil is possibly accumulated locally or insufficient in a common oil storage tank is avoided, it is ensured that all parts of the bearing can be fully lubricated, meanwhile, the rigidity and the deformation resistance of the retainer are improved through the arranged rib plates and the arranged connecting plates, and the service life of the bearing is prolonged. And the bearing is not easy to deform when bearing high load and rotating at high speed, so that the service life of the bearing is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of cage technology, and in particular to a plastic cage for a double-row tapered roller automotive wheel hub bearing. Background Technology

[0002] Double-row tapered roller bearing plastic cages are cages made of plastic material used in double-row tapered roller bearings to fix and guide the rolling elements (tapered rollers). Plastic cages typically consist of multiple windows (pockets), each accommodating one or more tapered rollers. The cage evenly distributes and isolates the rollers, preventing them from colliding with each other. To ensure roller lubrication, current double-row tapered roller bearing plastic cages generally have internal oil reservoirs. However, existing oil reservoirs are usually straight grooves or dotted grooves, resulting in a short lubricating oil flow path, making the oil easily thrown out by centrifugal force and failing to form a continuous lubricating oil film. Utility Model Content

[0003] This invention provides a plastic cage for a double-row tapered roller automotive wheel hub bearing, which solves the problems in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A plastic cage for a double-row tapered roller automotive wheel hub bearing includes a top plate and a bottom plate, wherein a support plate is circumferentially and equidistantly connected between the top plate and the bottom plate;

[0006] The top plate and the bottom plate are provided with a first oil storage tank and a second oil storage tank inside. The support plate is provided with a connecting groove for connecting the first oil storage tank and the second oil storage tank inside. Oil outlet holes are provided on both sides of the connecting groove.

[0007] As a further description of the above technical solution:

[0008] The first oil storage tank and the second oil storage tank are spiral-shaped.

[0009] As a further description of the above technical solution:

[0010] A filter screen is installed at the oil inlet at the top of the first oil storage tank.

[0011] As a further description of the above technical solution:

[0012] A plunger is installed at the oil inlet at the top of the first oil storage tank.

[0013] As a further description of the above technical solution:

[0014] The top plate and bottom plate are provided with annular ribs on their inner and outer sides, and the support plate is provided with connecting plates connected to the ribs on its front and rear sides.

[0015] As a further description of the above technical solution:

[0016] The surfaces of the top plate, bottom plate, and support plate are provided with grooves for installing ribs and connecting plates.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0018] In this invention, the spiral oil reservoir design increases the flow path of lubricating oil within the cage, allowing the lubricating oil to remain inside the cage for a longer period during bearing operation. This provides continuous and stable lubrication to the contact surfaces between the rollers and the cage, reducing wear. Furthermore, the spiral structure helps the lubricating oil distribute evenly within the cage, avoiding localized accumulation or insufficient lubricating oil that may occur in ordinary oil reservoirs. This ensures that all parts of the bearing receive adequate lubrication. Simultaneously, the ribs and connecting plates increase the rigidity and deformation resistance of the cage, making it less prone to deformation under high loads and high-speed operation, thereby extending the bearing's service life. Attached Figure Description

[0019] Figure 1 A schematic diagram of a plastic cage structure for a double-row tapered roller automotive wheel hub bearing;

[0020] Figure 2 This is a schematic diagram of the internal structure of the cage in this utility model.

[0021] Legend:

[0022] 1. Top plate; 2. Bottom plate; 3. Support plate; 4. First oil storage tank; 5. Second oil storage tank; 6. Connecting groove; 7. Oil outlet; 8. Filter screen; 9. Plunger; 10. Connecting plate; 11. Rib plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figure 1 , Figure 2A plastic cage for a double-row tapered roller automotive wheel hub bearing includes a top plate 1 and a bottom plate 2, with a support plate 3 circumferentially and equidistantly connected between the top plate 1 and the bottom plate 2. The top plate 1 and the bottom plate 2 have a first oil reservoir 4 and a second oil reservoir 5 inside. The support plate 3 has a connecting groove 6 inside for connecting the first oil reservoir 4 and the second oil reservoir 5, and oil outlet holes 7 are provided on both sides of the connecting groove 6. By injecting lubricating oil into the first oil reservoir 4, the lubricating oil can flow into the second oil reservoir 5 through the connecting groove 6. Since both the first oil reservoir 4 and the second oil reservoir 5 are spiral-shaped, the spiral design increases the flow path of the lubricating oil within the cage, allowing the lubricating oil to remain inside the cage for a longer period during bearing operation. This provides continuous and stable lubrication to the contact surface between the rollers and the cage, reducing wear.

[0025] Furthermore, the first oil storage tank 4 and the second oil storage tank 5 are spiral-shaped. The spiral structure of the oil storage tank allows the lubricating oil to be evenly distributed along the channel under the action of centrifugal force, avoiding local accumulation or loss.

[0026] Furthermore, a filter screen 8 is installed at the oil inlet at the top of the first oil storage tank 4. The filter screen 8 prevents dust and other particles from entering the interior of the oil storage tank and affecting the subsequent use of lubricating oil.

[0027] Furthermore, a plunger 9 is installed at the oil inlet at the top of the first oil reservoir 4. The plunger 9 is used to block the oil inlet and prevent the lubricating oil from leaking.

[0028] Furthermore, the inner and outer walls of the top plate 1 and the bottom plate 2 are provided with annular ribs 11, and the front and rear sides of the support plate 3 are provided with connecting plates 10 connected to the ribs 11. The combination structure of the ribs 11 and the groove increases the rigidity and deformation resistance of the cage, making it less prone to deformation when subjected to high loads and high-speed operation, thereby extending the service life of the bearing.

[0029] Furthermore, the surfaces of the top plate 1, the bottom plate 2, and the support plate 3 are provided with grooves for installing the rib plate 11 and the connecting plate 10. This facilitates the installation of the rib plate 11 and the connecting plate 10 through the grooves, and they can be fixedly connected by embedding, interference fit, screws, etc.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A plastic cage for a double-row tapered roller automotive wheel hub bearing, comprising a top plate (1) and a bottom plate (2), characterized in that: A support plate (3) is circumferentially and equidistantly connected between the top plate (1) and the bottom plate (2); The top plate (1) and the bottom plate (2) are provided with a first oil storage tank (4) and a second oil storage tank (5). The support plate (3) is provided with a connecting groove (6) for connecting the first oil storage tank (4) and the second oil storage tank (5). Oil outlet holes (7) are provided on both sides of the connecting groove (6).

2. The plastic cage for a double-row tapered roller automotive wheel hub bearing according to claim 1, characterized in that: The first oil storage tank (4) and the second oil storage tank (5) are spiral-shaped.

3. The plastic cage for a double-row tapered roller automotive wheel hub bearing according to claim 1, characterized in that: A filter screen (8) is provided at the oil inlet at the top of the first oil storage tank (4).

4. The plastic cage for a double-row tapered roller automotive wheel hub bearing according to claim 1, characterized in that: A plunger (9) is installed at the oil inlet at the top of the first oil storage tank (4).

5. A plastic cage for a double-row tapered roller automotive wheel hub bearing according to claim 1, characterized in that: The inner and outer walls of the top plate (1) and the bottom plate (2) are provided with annular ribs (11), and the front and rear sides of the support plate (3) are provided with connecting plates (10) connected to the ribs (11).

6. The plastic cage for a double-row tapered roller automotive wheel hub bearing according to claim 1, characterized in that: The surfaces of the top plate (1), bottom plate (2) and support plate (3) are provided with grooves for installing the rib plate (11) and connecting plate (10).

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