Device with a lock cylinder and a switching device for various electrical functions, especially an ignition starter switch for motor vehicles

US6236121A · kind A · utility

Assignee

• Huf Hülsbeck & Fürst GmbH & Co. KG · DE

Inventors

• Harald Kemmann · Velbert, DE
• Jörg Simon · Uerdingen, DE

Key dates

• Filing date: Jun 28, 1999
• Grant date: May 22, 2001
• Expiry date: Jun 28, 2019

Classification

• Technology area (CPC G): Physics
• CPC primary: G07C9/00738
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A device with a key-actuated closing cylinder and a switch triggers, when a key is turned therein, a particular electric function in a motor vehicle. In order to achieve a particularly compact and reliable device, at least two sensors are arranged inside the cylinder housing of the closing cylinder in zones that are mutually offset in the longitudinal direction. The sensor outputs are connected to a common evaluation device. The cylinder core has in corresponding axial zones several permanent magnets at particular points of its periphery. These points are selected so that the evaluation device detects different codes at the sensor outputs in the different working positions of the cylinder core and clearly identifies with these codes the corresponding working positions. The evaluation device thus acts as an electronic switch which on the basis of the sensed code triggers the electric function that corresponds to the momentary working position.