Patent ID: 7943841
Filing Date: 2011-05-17
Classification: G10H

Abstract:
1. A hi-hat type electronic pad comprising: a movable pad body formed into a circular shape as viewed in plan and adapted to be supported by a support member so as to be pivoted when it is struck and adapted to be vertically moved in unison with the support member vertically moved by a pedal operation; a bottom section configured separately from said movable pad body and disposed beneath said movable pad body, said bottom section having a fixed vertical position; and an operation detecting unit disposed at that part of one of said movable pad body and said bottom section which faces another of said movable pad body and said bottom section, wherein when said movable pad body is moved downward, said operation detecting unit is adapted to be in contact with said another of said movable pad body and said bottom section, said operation detecting unit includes a plurality of actuators and a plurality of operation sensors, said plurality of actuators being disposed to project from a base corresponding to the part of said one of said movable pad body and said bottom section facing said another of said movable pad body and said bottom section in a direction vertically away from said another of said movable pad body and said bottom section, said plurality of operation sensors being planarity disposed on a sensor installation surface facing the plurality of actuators, said base being adapted to be movable toward and away from the sensor installation surface, each of said plurality of operation sensors is adapted to output a detection signal when depressed by one of said plurality of actuators due to said operation detecting unit being in contact with said another of said movable pad body and said bottom section, and one or more of said plurality of operation sensors are formed into a substantially annular shape as viewed in plan, wherein said plurality of operation sensors are provided coaxially at different radial positions, and said plurality of actuators are provided to correspond to respective ones of said plurality of operation sensors, said plurality of operation sensors cooperating with said plurality of actuators to make up a plurality of groups each including at least one of said plurality of operation sensors and a corresponding at least one of said plurality of actuators, a distance between an operation sensor and an actuator is smaller in a radially more outward group when said operation detecting unit is not in contact with said another of said movable pad body and said bottom section, and detection signals are output from the plurality of operation sensors in an order from an operation sensor of a radially outwardmost group to an operation sensor of a radially inwardmost group when said operation detecting unit is in contact with said another of said movable pad body and said bottom section.