Hydraulic master cylinder switch

摘要

A switch adapted to be positioned on the pushrod of a hydraulic cylinder assembly and including a housing adapted to be positioned against an end of the hydraulic cylinder assembly and including a plurality of axially spaced electrical contacts, and a plunger mounted for axial sliding movement in the housing and adapted to be fitted over the pushrod with a driving connection between the pushrod and the plunger whereby the plunger is moved slidably forwardly in the housing in response to forward movement of the pushrod for selective coaction between the contacts to selectively generate a plurality of control signals. The driving connection between the plunger and the pushrod includes a notch opening in a rear face of the plunger and a lug formed as an eccentricity on the pushrod and fitted in the notch. A shoulder on the pushrod proximate the lug presses against a bottom surface of the notch to provide the driving connection between the pushrod and the plunger.