Kabushiki Kaisha Tokai Rika Denki Seisakusho

Denso Corporation

Masuo Noda

Kazuyoshi Ishiguro

Shinji Iwama

Hiroshi Kataoka

A contact is fitted to an insulator complete , and the contact is adapted to rotate in correspondence with the operation of an operation knob. The length of an arm among arm portions to which are provided on the contact is set to be shorter than the other arm portions and . As a result, fixed contacts and with which movable contacts and provided at distal ends of the arms and are brought into contact can be arranged at concentric positions, thereby making it possible to increase the number of contacts. In this case, since a relay for a small-current load is connected to the fixed contact , no hindrance is caused even if the contact force of the second movable contact is set to be small by devising the angles between the respective ones of the arm portions to

Rotary switch with rotatable contact

Contact holders accommodated in defined regions are elastically returned to initial positions on the side of a wall. At the initial positions, stoppers are formed integral with a wall which defines the regions, in such a manner that the stoppers are in parallel with the wall and spaced a distance from the wall. Those stoppers are each in the form of a thin plate, and have protrusions which are extended towards the contact holders, respectively. Hence, when returning to the initial positions, the contact holders and strike against the protrusions of the stoppers, so that the latter are bent towards the wall while reducing the distance, thus decreasing the impact thereon when the contact holders strike against the stoppers.

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Aichi, Japan

Masuo Noda