An integral clutch piston for a transmission

Abstract

An integral clutch piston for a transmission. The piston is disc-shaped and includes a skeleton and a sealing body. The skeleton is provided with an outer mold side end, an outer protrusion, an oil storage cavity, an inner friction end and an inner protrusion, wherein, The friction part of the skeleton is composed of two annular end faces, the inner friction end and the outer mold side end. One side of the oil storage cavity is the outer mold side end, and the other side is the inner friction end. The inner protrusion is located between the inner friction end and the outer mold. Between the side ends, it is connected with the side end of the outer mold and the inner friction end and protrudes toward the oil side; the outer protrusion is located on the side end of the outer mold and bears the pressure of the return part; the sealing body connects the outer protrusion, the inner friction end and the inner The protruding part is wrapped therein. The invention has good strength, wear resistance, high temperature resistance, high pressure resistance, impact resistance, strong sealing performance, light weight, good assembly performance, strong reliability, wide application range, long service life and is beneficial to mass 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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