Automotive differential planetary gear gasket with multiple pits and multiple oil grooves

Abstract

The invention discloses an automotive differential planetary gear gasket with multiple pits and multiple oil grooves. A gasket body is taken as a carrier, a coaxial circular inner hole is formed in the middle of the gasket body, and the upward surface of the gasket body is an outwards-convex spherical surface. The structure of the automotive differential planetary gear gasket is characterized in that the pits evenly distributed in the outwards-convex spherical surface are alternated by the four radial oil grooves. The oil grooves are linear inwards-concave arc-shaped grooves, the four oil grooves formed in the outwards-convex spherical surface coincide with angle bisectors of four quadrants, one end of each oil groove communicates with the inner hole, and the other end of each oil groove is stopped on the outer edge of the gasket body. The pits are spherical-crown-shaped counter bores, the pits are evenly distributed in the end face, except for the oil grooves, of the outwards-convex spherical surface, the included angles alpha between the spherical centers of the pits located in the two sides of the oil grooves in the circumferential direction are equal, 5-7 pits are formed in each angle bisector in the four quadrants of the outwards-convex spherical surface, and the radial intervals between the adjacent pits are equal. The oil grooves are used for separating pit groups, and lubricating oil introduced by the oil grooves is supplemented to the pits nearby, so that the lubricating condition of the outwards-convex spherical surface is remarkably improved.

Description

technical field [0001] The invention belongs to a technical solution in the technical field of auto parts design. Specifically, the invention relates to an accessory of a vehicle differential, especially a planetary gear gasket of the vehicle differential with multiple pits and multiple oil grooves. Background technique [0002] The automobile differential is a mechanism that adjusts the left, right or front and rear wheels to roll at different speeds. It is composed of left and right side shaft gears, two paired planetary gears and gear racks. When the car is turning or driving on an uneven road, it will inevitably cause the left, right or front and rear wheels to roll at different speeds, that is, to ensure pure rolling motion of the wheels on both sides. Under this working condition, the planetary gear built into the differential not only revolves around the half shaft, but also rotates itself. When the planetary gear rotates, relative rotation and friction will inevitab...

AI Technical Summary

Problems solved by technology

The structural feature of the above technical solution is that dimples are added locally on the surface of the spherical gasket, and the inner volume formed by the dimples is used to store a small amount of lubricating oil, which can solve the local lubrication problem of the friction pair within a period of time, but this effect is not long-term , the reason is that there is no channel for replenishing lubricating oil in this structure. Once the lubricating oil stored in the pit is consumed, the friction pair will lose the oil film lubrication, and mechanical wear will naturally occur, resulting in the service life of the differential not reaching expectations.

Images