High voltage generating device

Claim 1

A high voltage generating device comprising an outer housing of insulating material in which two piezoelectric elements are housed; an electrical contact element mounted between and in contact with respective first end surfaces of said piezoelectric elements; a metal abutment and a metal receptacle member provided in said outer housing in contact with respective second end surfaces of said piezoelectric elements; an inner housing supporting an electrically conductive hammer for imparting an impact force to said metal abutment, said inner housing being slidably supported in a space within said outer housing and containing a bore with sloped portion formed in a side surface thereof; an electrically conductive spring in electrical contact with said hammer and mounted in said outer housing for biasing said inner housing outward of said outer housing, said spring having an end portion which is straight and in parallel with the longitudinal axis of said spring, said straight end portion passing through a hole in said outer housing and making electrical contact with said metal receptacle member, said outer housing containing an L-shaped cam groove formed on an inner wall thereof opened to an open end of said outer housing; a frame housing an opening through which said inner housing extends fixed over the opening of said outer housing to close the opening of said L-shaped groove and to close in conjunction with said inner housing the open end of said outer housing; and a pin mounted on said hammer, a tip end of said pin passing through said bore and engaging with said L-shaped cam groove of said outer housing.