Device for sensing rotary angles of a lock cylinder in a key-actuated lock system

US5224364A · kind A · utility

Assignee

• Mercedes-Benz Group AG · DE

Inventors

• Klaus Claar · Sindelfingen, DE
• Jurgen Schrader · Stuttgart, DE
• Martin Lindmayer · Sulz, DE

Key dates

• Filing date: Mar 20, 1991
• Grant date: Jul 6, 1993
• Expiry date: Mar 20, 2011

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T70/65
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A device is disclosed for sensing the rotary angle of a key-actuated lock system which contains a lock cylinder of a door or flap of a vehicle which is rotatable by way of a key. A follower is coupled to the lock cylinder via a driving coupling allowing a free-wheel rotational play and to a protection element of a lock and is rotatably mounted in a door interior. A switch-actuating part is rotationally coupled to the lock cylinder virtually free of play and is rotatable synchronously with the lock cylinder and a control switch which is switchable by the switch-actuating part at a specific rotary angle of the part and directly spatially adjacent thereto. The switch-actuating part is mounted behind the follower in relation to the lock cylinder on a carrier facing the interior of the vehicle and is fixed to the door or flap. A control switch is retained at least indirectly on the same carrier, and at least these two parts are sealed off relative to the door interior.