JP2894107B

• Main Authors: MURAKAMI TOMITARO, MATSUI HIROSHI, NAKAGAWA YOSHINOBU
• Format: Patent
• Language: English
• Published: 24.05.1999
• Edition: 6
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; RESISTORS

The present invention relates to an illumination type electronic part of rotational operation which is used in audio equipment or the like and makes it possible to recognize the position of rotational operation of a knob by the light from a built-in light emitting device. Its object is to provide an illumination type electronic part of rotational operation which is able to cope with changes in specifications for the rotational operation shaft readily, to withstand a strong thrust force applied to the rotational operation shaft, to reduce the hitting sound emitted from the rotatable stopper of the rotational operation shaft, and also to light up the illumination means disposed on the end of the rotational operation shaft in a stable manner. In order to achieve the foregoing object, the rotational operation shaft is made in a simple hollowed cylindrical shape, and also the rotor having a flange and a stopper for restricting the extent of its rotational motion is prepared separately from the rotational operation shaft and produced by resin molding. Furthermore, the rotor is made of a transparent resin and integrally molded together with the light collecting lens for the light emitting device.