Transmission and energy accumulator assembly thereof

Abstract

The invention discloses a transmission and an energy accumulator assembly thereof. The energy accumulator assembly comprises a cavity, a piston, a spool, a first elastic piece, a second elastic piece and a limiting structure, wherein one side of the cavity is open to form an opening and an oil drain hole is formed in the cavity; the piston is movably arranged in the cavity and an oil drain passage is arranged on the piston; the piston is sheathed outside the spool, the spool can axially move relative to the piston, and an oil drain chamber which is defined among the bottom wall of the cavity, the spool and the piston and is respectively communicated with one ends of the oil drain hole and the oil drain passage; the first elastic piece is arranged in the cavity, and the two ends of the first elastic piece are respectively retained between the bottom wall and the piston; the second elastic piece is arranged in the cavity and the two ends of the second elastic piece are respectively retained between the bottom wall and the spool; and the limiting structure is fixedly arranged on the cavity and is structured to be capable of retaining the piston after the piston moves a preset distance towards the bottom wall. The energy accumulator assembly provided by the invention is integrated with functions of a safety valve and an energy accumulator, can adequately accumulate energy when oil pressure is too high and can take an effect of relieving pressure.

Description

technical field [0001] The invention relates to the technical field of automobile construction, in particular to a transmission and an accumulator assembly thereof. Background technique [0002] Accumulators and safety valves are installed in the hydraulic system of traditional automatic transmissions. Accumulators can store energy in the oil circuit of automatic transmissions, suppress pulses, and effectively alleviate oil circuit instability caused by excessive pulses. The safety valve plays the role of overload protection. It generally consists of a valve body, a valve core, a spring, and an adjusting screw. When the hydraulic oil flow rate is too high and the oil pressure is high, the valve will automatically open to drain the excess oil. However, the accumulator and the safety valve in the hydraulic oil circuit of the traditional automatic transmission are two different parts, which occupy a large space, have high processing costs and poor practicability. Contents of ...

AI Technical Summary

Problems solved by technology

However, the accumulator and the safety valve in the hydraulic oil circuit of the traditional automatic transmission are two different parts, occupying a large space, high processing cost, and poor practicability

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