Alps Electric Co., Ltd.

Hiroaki Komatsu

Tsumoru Oka

Kenji Yoshioka

An electronic tuning block including a plurality of screw drive type variable resistors are juxtaposed parallel to one another obliquely on an insulating substrate, and holes for receiving pointers fitted to the screws of the variable resistors and holes for receiving rotary knobs fitted to the tips of the screw shaft are formed on the upper surface of a box-shaped insulating case which is fixed to the insulating substrate.

Electronic tuning block

A switch of an extremely small thickness is made of a reduced number of parts and can be easily assembled. The switch comprises a pair of complementary case members each of which has a plurality of fixed contacts having integrally formed terminals and a common fixed contact having an integrally formed terminal; and an operation member having a lever portion, and a disc portion disposed between the case members. The operation member is provided on its outer faces with identically shaped movable contact members having contacts on the outer surfaces thereof. The upper ends of the case members define a slot form which the lever portion of the operation member is upwardly projected, and the movement of the lever portion is restricted by the slot. The operation member is securely supported in the case members by horizontal fastener members extended from both faces of the former to the outer surfaces of the latter.

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Tohda, Japan

Hiroaki Komatsu