Patent ID: 9160261
Filing Date: 2015-10-13
Classification: B25F,H01H

Abstract:
1. A variable speed switch mounted to an electric power tool and capable of outputting an electric signal for increasing or decreasing an amount of electric power supplied to a motor of the electric power tool according to a displacement amount of a switch-operating portion, comprising: a wake-up contact configured to work when the switch-operating portion is operated and by which a voltage can be applied to a control circuit part of the motor to make the control circuit part in an operable state; a pressing member that is attached to the switch-operating portion via an elastic member; and a load sensor that is configured to receive a pressing force from the pressing member and to output the electric signal for increasing or decreasing the amount of electric power supplied to the motor of the electric power tool, wherein the pressing member is spaced apart from the load sensor before the wake-up contact works.