High-rotating-speed oil seal for new energy gearbox

A gearbox and high-speed technology, which is applied to the sealing of the engine, transmission parts, engine components, etc., can solve problems such as shortage, achieve the effects of reducing friction, increasing sealing, and avoiding oil leakage

CN111623108APending Publication Date: 2020-09-04昆山茂顺密封件工业有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-09-04

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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.
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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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Embodiment Construction

[0014] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0015] The present invention provides such figure 1 The high-speed oil seal of a new energy transmission shown includes an outer diameter 3, a main lip 9 is fixed on one side of the outer diameter 3, and a metal frame 2 is sheathed on the outside of the main lip 9, and the metal frame 2 is embedded in the outer Inside the diameter 3, one side of the main lip 9 is provided with a molding surface 7, and one side of the molding surface 7 is provided with a two-wa...