High-rotating-speed oil seal for new energy gearbox

Abstract

The invention discloses a high-rotating-speed oil seal for a new energy gearbox. The high-rotating-speed oil seal comprises an outer diameter, a main lip is fixedly arranged on one side of the outer diameter, the outer part of the main lip is sleeved with a metal framework, the metal framework is arranged in the inner part of the outer diameter in an embedded manner, a forming face is arranged onone side of the main lip, a two-way oil return line is arranged on one side of the forming face, a PTFE coating is arranged on the surface of the forming face in a sprayed manner, a spring groove is formed in the outer wall of the main lip, a spring is fixedly arranged on the inner wall of the spring groove, a spring retaining lip is arranged on one side of the spring and fixedly arranged on the main lip, a front chamfer is formed in one side of the outer wall of the outer diameter, a back chamfer is formed in the other side of the outer wall of the outer diameter, and a surface fixing clearance is fixedly arranged on the other side of the outer diameter. According to the high-rotating-speed oil seal for the new energy gearbox, the PTFE coating is arranged on the surface of the forming face in a sprayed manner, so that friction between the lip part and a shaft is reduced, sealing is improved, the service life at the high rotating speed is prolonged by matching with the design of the main lip, in addition, the requirement of two-way operation is met through the two-way oil return line, it is guaranteed that the gearbox is kept in a sealed state in the high rotating speed state, andthe situation that oil leakage condition occurs is avoided.

Description

technical field [0001] The invention relates to the field of oil seals, in particular to a high-speed oil seal for a new energy transmission. Background technique [0002] The oil seal is the seal of lubricating oil. It is a mechanical element used to seal grease. It isolates the parts that need to be lubricated in the transmission parts from the output parts, so that the lubricating oil will not leak. The seals for static seals and dynamic seals are called oil seals. In the application of rotary oil seals, oil seals are required for all parts that have liquid lubricating oil in the running box and are connected to the outside. For the front and rear oil seals of the gearbox, some are made of rubber, some are made of metal, and most are made of steel bone rubber. However, existing products on the market have the problems of large wear and cracks due to aging. Some of the high speeds in new energy vehicles can reach 20,000rpm. It is necessary to pay more attention to the te...

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Problems solved by technology

It is necessary to pay more attention to the technical problem of gearbox wear resistance. At present, there is a lack of related products in the market. Therefore, providing a better and more wear-resistant oil seal is an urgent problem to be solved in the field of new energy vehicles.

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