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

A technology for planetary gears and differentials, applied in differential transmissions, gear lubrication/cooling, belts/chains/gears, etc., can solve problems such as mechanical wear, short-term effect, and no supplementary lubricating oil, etc., to achieve improvement Effects of lubrication conditions, increased safety performance, and reduced structural strength
CN112283315APending Publication Date: 2021-01-29JIANGSU PACIFIC PRECISION FORGING +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU PACIFIC PRECISION FORGING
Publication Date
2021-01-29

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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.
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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...

Claims

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