Integral type clutch piston for transmission

Abstract

Disclosed is an integral type clutch piston for a transmission. The integral type clutch piston is in a disc shape and comprises a skeleton and a sealing body. The skeleton is provided with an outer die side end, an outer protruding part, an oil storage cavity, an inner friction end and an inner protruding part. A friction part of the skeleton is composed of two annular end faces of the inner friction end and the outer die side end; the outer die side end is arranged on one side of the oil storage cavity, and the inner friction end is arranged on the other side of the oil storage cavity; the inner protruding part is located between the inner friction end and the outer die side end and connected with the outer die side end and the inner friction end, and protrudes towards the oil side; theouter protruding part is located at the outer die side end for bearing the pressure of a return part; and the sealing body wraps the outer protruding part, the inner friction end and the inner protruding part. The integral type clutch piston is good in strength, resistant to abrasion, resistant to high temperature and high pressure, resistant to impact, high in airtightness, low in self-weight, good in assembling ability, high in reliability, wide in application range, long in service life and good for large-batch production.

Description

technical field [0001] The present invention relates to an integral clutch piston for a transmission. Background technique [0002] The clutch piston of the transmission is a hydraulic component used in conjunction with the clutch piston housing. Its function is that when the cavity of the piston housing is filled with oil, the oil pressure in the cavity pushes the piston to move towards the friction plate, so that the internal and external friction plates are compressed to generate friction. When the two parts engaged with the inner and outer friction plates are formed into one body, there is no relative rotation, so the input torque is transmitted to form an output, and then drives the mechanical transmission element to rotate; when the piston housing cavity drains oil, the return part of the piston generates The thrust pushes the piston back to its original position, the combined internal and external friction plates are disengaged, and the mechanical transmission cannot ...

AI Technical Summary

Problems solved by technology

In addition, due to the frequent gear shifting of the transmission, the friction between the piston and the friction plate, and between the piston and the piston shell generates a large amount of heat energy, and high temperature and wear can easily cause the seal of the piston to fail.

At the same time, in order to ensure the guiding effect, the inner and outer circles of the piston are very close to the sealing surface of the piston chamber. When the piston moves, if there is a guide failure or unbalanced load, it is easy to cause the piston chamber to be scratched and the friction plate to wear abnormally, resulting in the failure of the entire clutch.

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