End cover structure capable of preventing oil seal from being separated out

An end cap and oil-proof technology, applied in transmission parts, belts/chains/gears, mechanical equipment, etc., can solve the problems of increasing the pressure output of the oil seal, difficulty in assembly, and increasing the pressing force of the oil seal, so as to increase the resistance and improve the Product quality, the effect of increasing friction

CN108571579APending Publication Date: 2018-09-25SHAANXI FAST GEAR CO
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2018-09-25

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Abstract

The invention discloses an end cover structure capable of preventing an oil seal from being separated out. The oil seal is mounted in an upper through hole in an end cover, the contact surface of theoil seal with the side wall of the upper through hole is uneven, and the friction force between the oil seal and the side wall of the upper through hole is increased; a groove is formed in the side wall of the upper through hole; when the oil seal is separated out of the end cover under pressure, bulges on the side surface of the oil seal are clamped by the groove, and the resistance of the oil seal separated out of the end cover is increased. After the structure of the end cover is modified, the oil seal is effectively prevented from being separated out, and the product quality is improved.
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Description

Technical field

[0001] The invention relates to a gearbox end cover, in particular to an oil seal detachment-proof end cover structure.

Background technique

[0002] As a high-tech sealing part, oil seals are widely used in automobile engines and gearboxes. Due to the complex application environment, the oil seal at the flange of the gearbox may come out of the flange, resulting in the leakage of lubricating oil in the transmission. If it is not discovered in time, the transmission may be burned during the operation of the car.

[0003] Therefore, a variety of failure modes need to be considered in the design of the oil seal, among which the oil seal comes off as a key prevention point, which needs to be comprehensively considered and checked at the early stage of design. The oil seal is press-fitted on the end cover of the oil seal. When the pressure on the oil seal itself exceeds the pressure of the oil seal, the oil seal will come off from the end cover or deviate fr...

Examples

Embodiment Construction

[0032] The present invention is described in further detail below in conjunction with accompanying drawing:

[0033] The invention discloses an end cover structure for preventing oil seal from falling out. The end cover 1 is provided with an upper through hole 2, a gland 9 is installed in the upper through hole 2, an oil seal 3 is installed between the upper through hole 2 and the gland 9, and the upper The through hole 2 has a groove 4 on its side wall, and the side wall of the upper through hole 2 is divided into the first inner wall 5, the second inner wall 6 and the third inner wall 7 from the top of the upper through hole 2 downwards, and the upper through hole 2 The lower edge is provided with an inward protrusion 8.

[0034] see figure 1 and figure 2 , figure 1 It is an ordinary end cover, and an upper through hole 2 is opened in the middle of the end cover 1; figure 2 It is a schematic diagram of installing the oil seal 3 on the end cover 1. A gland 9 is installe...