Gear shifting operator for speed variator

Abstract

The invention relates to a shift actuator for a transmission comprising a first electromagnetic solenoid (5) for operating a shifting mechanism of the transmission to a first shifted position and a second electromagnetic solenoid (6) for operating the shifting mechanism to a second shifted position, the shift actuator for a transmission further comprising: a neutral operation member (31) mounted on the shifting mechanism to bring the shifting mechanism to a neutral position lying between the first shifted position and the second shifted position; a neutral limitation member (8) that can move to a first position where the neutral operation member (31) is permitted to be operated to the first shifted position and to the second shifted position, and can move to a second position where the neutral operation member (8) is brought to the neutral position; and an electromagnetic solenoid (7) for neutral, which brings the neutral limitation member (8) to the second position.

Description

technical field [0001] The present invention relates to a shift actuator that operates a shift mechanism of a transmission mounted on a vehicle. Background technique [0002] As a shift actuator that operates a shift mechanism of a transmission, a fluid pressure cylinder using fluid pressure such as air pressure or hydraulic pressure as an actuation source is generally used. The shift actuator using this fluid pressure cylinder has the following problems: piping to the fluid pressure source is required, and an electromagnetic switching valve for switching the flow path of the actuating fluid is also required, and space for these components is required. And it leads to an increase in the weight of the device as a whole. [0003] In recent years, electric motor-type actuators have been proposed as shift actuators of transmissions mounted on vehicles for vehicles that do not have a compressed air source and a hydraulic pressure source. The shift actuator composed of an electr...

AI Technical Summary

Problems solved by technology

The shift actuator using this fluid pressure cylinder has the following problems: it needs piping to be connected to the fluid pressure source, and it also needs to arrange an electromagnetic switching valve for switching the operating fluid flow path, and space for arranging these components is required. and lead to an increase in the overall weight of the device

However, when the operation speed of the electromagnetic solenoid is fast, the overshoot (overshoot) increases, and it is not necessarily satisfactory in terms of reliability.

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