Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Tetsuya Koma

Takefumi Inoue

Yoshiharu Abe

Shigetaka Douzono

Masahide Onishi

Yoshiyuki Nakade

Hisashi Nishikawa

Hiromitsu Noda

Shozoh Shiraga

Hiroyuki Kosaka

Takao Matsui

Hideki Tsukaoka

Toshio Tanaka

Mituo Aimi

Makoto Nagahara

Hiroyuki Takeshita

A rotation angle detection device includes rotary bodyrotating in linked motion with a steering wheel; detectorsandthat rotate in linked motion with rotary body; detecting partsandfor detecting rotation of detectorsand; control partfor detecting a rotation angle of rotary bodyfrom a detection signal from detecting partsand; latching bodyfor latching the rotation of rotary body; and casecontaining rotary body, detection partsand, control partand latching body. Latching bodyincludes latching partB urged by elastic bodyand brought into elastic contact with an outer periphery of rotary body; and releasing partC for releasing an elastic contact of latching partB to rotary bodyand a part of which is exposed to the outside of case

Rotation angle detection device

A rotation angle detection device includes a rotary body rotating in linked motion with a steering wheel; a detector rotating in linked motion with the rotary body; a magnetic detection element placed on a wiring board and detecting magnetism of a magnet placed at the detector; a control part for detecting a rotation angle of the rotary body based on a detection signal from the magnetic detection element; and a holder latched onto the wiring board and rotatably holding the detector.

A rotation angle detector is arranged to detect a rotation angle of an object. The rotation angle detector includes a rotor that rotates about a rotation axis according to a rotation of the object, a detecting unit for detecting a rotation of the rotor, a controller for detecting a rotation angle of the rotor based on a detection signal output from the detecting unit, and a case for accommodating the rotor rotatably. The case has at least three elongate holes provided therein. The elongated holes have longitudinal directions extending radially from the rotation axis of the rotor.

Rotation angle detector

A switch provided with a fixed contact and a movable contact coming into contact with each other and separating from each other. The surface of at least one of the fixed contact and the movable contact is provided with a plurality of recesses whose edges are overlapped with each other, and also provided with a plurality of projections. The projections formed on the contact surface have sharp-pointed tips which can break an oxide film or the like if it is formed on the contact surface, thereby achieving stable contact.

Switch and manufacturing method thereof

A lighting apparatus is configured by disposing an EL element inside a stationary housing including, about its top side, an operating part including a plurality of arranged push buttons as well as inside a movable housing openably mounted to the stationary housing and having a display part at its surface, and connecting a control circuit to the EL elements, the operating part and the display part. The control circuit controls light emission of the respective EL elements of the stationary housing and the movable housing to illuminate the operating part and the display part, so that the lighting apparatus simple in structure is capable of various illuminations.

Lighting apparatus

An EL element includes plural light-emitting regions for illuminating corresponding push buttons, and is disposed beneath the push buttons. The EL element is connected to a switching contact and a controller. An light-emitting operation of the EL element is controlled by the controller to illuminate a certain push button. The keyboard including the above components can provide multiple functions for illuminating the push buttons although having a simple structure.

Illumination type keyboard

A low profile pushbutton switch having a predetermined stroke and which is free from looseness in both horizontal and vertical directions is realized, and an input device employing this pushbutton switch is obtained by embodying the following structure. A first side of a stabilizing member is engaged with a lower face of a key-top which depresses a switch contact via an elastic body and a link member. Both terminals of a second side of the stabilizing member open at its center section are held rotatably and slidably at a height range where the first side travels upon depressing of the key-top.

Growing community of inventors

Fukui, Japan

Tetsuya Koma