Murata Manufacturing Co., Ltd.

Hideo Nishizawa

Yukinori Ueda

Yoshiyuki Nakatsu

A variable resistor wherein the arm portion of a rotatable slider is in contact against an approximately circular arc-shaped resistor provided on a base plate with the central portion of the resistor, and the slider is provided with a driver plate having an approximately dish-shaped projection portion at its center, and an approximately ring-shaped arm portion having a contact portion, which are coupled to each other, are punched out from one sheet of conductive sheet metal, are turned up by 180.degree. at the coupling portion, with the projection portion being projected from the arm portion.

Variable resistor

A semi-fixed type variable resistor for use in electrical and electronic equipment which includes an electrically insulating substrate, a semi-circular resistor member formed on the substrate, a slider member of similar semi-circular shape rotatably mounted on the substrate to slide over the resistor member, and a cover member rotatably mounted on the substrate and also serving as a knob for rotating the slider member. The cover member has a protrusion formed at the forward end portion of its shaft so as to be readily engaged with a sleeve portion of a conductive plate provided on the substrate for reduction in cost and improvement of reliability of the variable resistor.

Semi-fixed type variable resistor

A variable resistor for use in electrical and electronic equipment which includes a base plate, a lower stator terminal housed in a circular recess formed in one surface of the base plate, a rotor member having an electrically conductive film layer at its one surface and an electrically resistant film layer at its other surface and rotatably mounted on the lower stator terminal with the conductive film layer contacting the lower stator terminal, and an upper stator terminal fixed to the base plate so as to slidingly contact the resistant film layer under pressure.

Growing community of inventors

Nagaokakyo, Japan

Hideo Nishizawa