Shaft sealing assembly with large eccentricity resistance and low frictional resistance for gearbox

A gearbox and low-friction technology, which is applied to transmission parts, belts/chains/gears, mechanical equipment, etc., can solve the problems of poor durability and achieve the effects of improving service life, making up for wear and ensuring contact force

Inactive Publication Date: 2018-08-07
JIANGMEN XINHUI SEALING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of poor durability of the existing shaft seals used in automobile gearboxes, the invention provides a shaft seal assembly with large eccentricity resistance and low frictional resistance for new energy electric automobile gearboxes. The structure is practical and reliable

Method used

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  • Shaft sealing assembly with large eccentricity resistance and low frictional resistance for gearbox
  • Shaft sealing assembly with large eccentricity resistance and low frictional resistance for gearbox
  • Shaft sealing assembly with large eccentricity resistance and low frictional resistance for gearbox

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Embodiment Construction

[0022] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0023] see figure 2 with 3 , a shaft seal assembly with large eccentricity resistance and low frictional resistance for a gearbox provided by the present invention includes a main seal 1 and a sleeve seal 2, the main seal 1 includes a first metal skeleton 11 and a first metal coating The first sealing body 12 outside the frame 11, the end of the first sealing body 12 is provided with a flange 12a, the flange 12a is located at the root of the first sealing body 12, the flange 12a extends axially along the inner side and forms There is a main sealing lip 12b for axial sealing; the sleeve seal 2 includes a second metal skeleton 21 and a second sealing body 22 partially covering the inside of the second metal skeleton...

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Abstract

The invention discloses a shaft sealing assembly with large eccentricity resistance and low frictional resistance for a gearbox. The shaft sealing assembly comprises a main sealing element and a shaftsleeve sealing element, wherein the main sealing element comprises a first metal framework and a first sealing body; the outer side of the first metal framework is coated with the first sealing body;a main sealing lip sealed in the axial direction is formed on the first sealing body; the shaft sleeve sealing element comprises a second metal framework and a second sealing body; the outer side ofthe second metal framework is coated with part of the first sealing body; the main sealing element and the shaft sleeve sealing element are matched with each other in a press fitting and relative rotation manner, and the shaft sleeve sealing element converts radial sealing into axial sealing, and the situation that larger contact force is needed when radial sealing meets the requirement of large eccentricity is avoided, so that the frictional resistance is reduced while abrasion of the main sealing lip is slowed down; in addition, an elastic piece provides stable elastic force for the main sealing lip to make up abrasion of the main sealing lip and reduction of contact force caused by ageing of the sealing material, and stability of the contact force of the main sealing lip is ensured, sothat the service life of the product is prolonged to meet the requirement of 15 years.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to a large eccentricity-resistant and low-friction shaft seal assembly for new energy electric vehicle gearboxes. Background technique [0002] At present, shaft seals for gearboxes on the market are usually sealed with radial sealing lips. For example, the publication number is CN103727243A, and the name is a Chinese invention application for an oil seal with an inner metal steel ring structure and a sealing method. See figure 1 , which discloses that the metal support frame 6 enables the oil seal to be firmly assembled with the seal housing during the working process. During operation, the installation shaft 4 penetrates into the sealing lip 7 of the oil seal, and the radial force on the surface of the installation shaft 4 interacts with the oil seal rubber The lips are in tight fit and contact, and the radial force exerted by the inner metal steel ring 8 on the rubber lip of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H57/029
CPCF16H57/029
Inventor 欧喜兵
Owner JIANGMEN XINHUI SEALING TECH
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