Gearbox thrust washer structure with dimple lubrication optimization
By designing a ball-bearing lubrication structure with a sliding ring and a stationary ring on the gearbox thrust washer, the wear problem caused by oil film consumption after long-term use of the thrust washer is solved, achieving the effect of low friction and reduced wear.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG XINYONGLI CIRCLIPS CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-09
Smart Images
Figure CN224339456U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of thrust washers, and in particular to a gearbox thrust washer structure with optimized lubrication through recesses. Background Technology
[0002] Thrust washers are annular or semi-annular components used in conjunction with radial sliding bearings, primarily to prevent axial movement in mechanical devices. Thrust washers are a core safety component in the axial force balancing system of a gearbox. They form a rotating-stationary friction pair with the gearbox housing / bearing seat, requiring a stable oil film to be maintained under high-speed relative motion. Existing thrust washers are often just a single ring; after prolonged use, the oil film on their surface is consumed, leading to wear on the washer itself and the rotating components it contacts. To address these issues, a solution is proposed below. Utility Model Content
[0003] The purpose of this invention is to provide a gearbox thrust washer structure with optimized lubrication through recesses, which has the advantages of maintaining a low coefficient of friction and reducing wear.
[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0005] A gearbox thrust washer structure with optimized lubrication vias includes a sliding ring and a stationary ring. The sliding ring has several mounting holes arranged in a ring on its upper surface. A ball bearing is installed within each mounting hole and is movably fitted into it. Several connecting tubes are fixed to the upper surface of the stationary ring. These connecting tubes are inserted into the mounting holes and snap-fitted into them. The connecting tubes abut against the lower end of the ball bearing, ensuring the ball bearing is positioned within the mounting hole. An oil cavity is provided within the stationary ring to hold lubricating oil. The lower ends of the connecting tubes communicate with the oil cavity.
[0006] Preferably, the lower end of the mounting hole is cylindrical and the upper end is frustum-shaped, and the opening diameter at the uppermost end of the mounting hole is smaller than the diameter of the ball.
[0007] Preferably, a retaining ring is provided on the inner wall of the lower end of the mounting hole, and an annular groove is provided on the outer wall of the connecting pipe. The portion of the outer wall of the connecting pipe located at the upper end of the annular groove is inclined, and the annular groove is engaged with the retaining ring.
[0008] Preferably, a sealing gasket is attached inside the annular groove, which is used to increase the sealing performance at the connection between the connecting pipe and the mounting hole.
[0009] The beneficial effects of this utility model are: the installation between the ball and the mounting hole is simple, the connection between the stationary ring and the sliding ring is convenient, and the installation can be completed without the use of other tools; during use, the lubricating oil in the oil cavity will be squeezed into the connecting pipe, and the ball will be covered with lubricating oil when it rolls, further reducing the friction between the ball and external components. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of an embodiment;
[0011] Figure 2 This is a cross-sectional structural diagram of an embodiment;
[0012] Figure 3 for Figure 2 A magnified view of area A in the middle.
[0013] Reference numerals in the attached drawings: 1. Sliding ring; 2. Stationary ring; 3. Mounting hole; 4. Ball bearing; 5. Connecting pipe; 6. Oil cavity; 7. Snap ring. Detailed Implementation
[0014] The following description is merely a preferred embodiment of this utility model, and the scope of protection is not limited to this embodiment. All technical solutions falling within the scope of this utility model's concept should be protected. Identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom" and "top," "inner" and "outer" refer to directions toward or away from the geometric center of a specific component.
[0015] like Figures 1 to 3 As shown, a gearbox thrust washer structure with optimized lubrication via recesses includes a sliding ring 1 and a stationary ring 2. The sliding ring 1 has several mounting holes 3, with the lower end of each hole being cylindrical and the upper end frustum-shaped. Ball bearings 4 are housed within the mounting holes 3. The ball bearings 4 are pressed into the mounting holes 3 from the lower end of the sliding ring 1. Because the opening at the upper end of the mounting hole 3 is smaller than the diameter of the ball bearing 4, the ball bearing 4 is confined within the hole.
[0016] The connecting pipe 5 above the stationary ring 2 is inserted into the mounting hole 3, with the top end of the pipe abutting against the lower end face of the ball 4. The lower end of the connecting pipe 5 communicates with the oil cavity 6 inside the stationary ring 2, and the lubricating oil is transported to the contact area of the ball 4 through the inner hole of the connecting pipe 5. In this design, the lower end face of the stationary ring 2 is a downwardly protruding metal plate. After the thrust washer is installed on the component, it will be pushed upward, causing the metal plate to bend upward and compress the space of the oil cavity 6, causing the lubricating oil in the oil cavity 6 to overflow upward from the upper end of the connecting pipe 5.
[0017] A retaining ring 7 is provided on the inner wall of the lower end of the mounting hole 3, and an annular groove is provided on the outer wall of the connecting pipe 5. The portion of the outer wall of the connecting pipe 5 located above the annular groove is inclined. The retaining ring 7 is made of an elastic component, such as rubber. When the connecting pipe 5 is inserted upward into the mounting hole 3, the upper end of the connecting pipe 5 will squeeze the retaining ring 7, causing the retaining ring 7 to deform until the position of the annular groove moves to the retaining ring 7. The retaining ring 7 then returns to its original shape and abuts against the annular groove, thus fixing the connecting pipe 5 to the mounting hole 3.
[0018] A sealing gasket is attached inside the ring groove. The sealing gasket is also made of an elastic material, such as rubber or silicone, which can increase the sealing between the retaining ring 7 and the ring groove.
[0019] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A gearbox thrust washer structure with pitted lubrication optimization, comprising a sliding ring (1) and a stationary ring (2), characterized in that, The sliding ring (1) is provided with a plurality of mounting holes (3), which are arranged in a ring on the upper end face of the sliding ring (1). A ball (4) is provided in the mounting hole (3), which is embedded in the mounting hole (3) and is movably engaged with the mounting hole (3). A plurality of connecting pipes (5) are fixed on the upper end face of the stationary ring (2). The connecting pipes (5) are inserted into the mounting hole (3) and are snapped together with the mounting hole (3). The connecting pipes (5) abut against the lower end of the ball (4) so that the ball (4) is located in the mounting hole (3). An oil cavity (6) is provided in the stationary ring (2), which is used to hold lubricating oil. The lower ends of the plurality of connecting pipes (5) are all connected to the oil cavity (6).
2. The gearbox thrust washer structure with pitted lubrication optimization according to claim 1, characterized in that, The lower end of the mounting hole (3) is cylindrical and the upper end is frustum-shaped. The opening diameter of the uppermost end of the mounting hole (3) is smaller than the diameter of the ball (4).
3. The gearbox thrust washer structure with pitted lubrication optimization according to claim 2, characterized in that, A retaining ring (7) is provided on the inner wall of the lower end of the mounting hole (3), and an annular groove is provided on the outer wall of the connecting pipe (5). The part of the outer wall of the connecting pipe (5) located at the upper end of the annular groove is inclined, and the annular groove is engaged with the retaining ring (7).
4. The gearbox thrust washer structure with pitted lubrication optimization according to claim 3, characterized in that, A sealing gasket is attached inside the annular groove. The sealing gasket is used to increase the sealing performance at the connection between the connecting pipe (5) and the mounting hole (3).