Kienzle Apparate Gmbh

Mannesmann Kienzle Gmbh

Paul Blaser

Walter Strobel

Helmut Schmidt

Gunter Treude

A keyboard for large scale inexpensive production comprises a housing having a front frame and a base part which are connectable with one another by latch elements to support a printed circuit board in a floating manner. The printed circuit board carries the keys of the keyboard. The printed circuit board is assembled to the front frame with relatively great accuracy via several aligning elements.

Keyboard

A keyboard which can be assembled from individual keys is disclosed. The individual keys include a key button, a key shaft for switching electric circuits, a stationary key body, and a spring for influencing the relative movement between the key shaft and key body. A base structure having cutouts is provided for receiving the keys. A circuit board carrying control elements cooperates with the key arrangement. The key buttons have several receiving openings for the key shafts. The cutouts in the base structure and the arrangement of the control elements on the circuit board are staggered relative to each other from row to row by a half spacing.

Keyboard assembled from individual keys

A keyboard assembly includes a U-shaped carrier member and a plurality of key members connected thereon by resiliently yieldable legs having detent portions which engage cooperating recesses provided in the bottom wall of the U-shaped carrier member with snap action. Each key member has an upper and a lower housing port which are snap-fastened to each other, and an actuating shaft axially movable to energize an electrical component mounted below the carrier member. A locking member is also provided to lock the shaft in a down actuating position.

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Villingen-Schwenningen, Germany

Paul Blaser