Electrical measuring instrument with connecting cable

US4652818A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Emil Buchschmid · Roßtal, DE
• Anton Frenznick · Nürnberg, DE
• Klaus Neidhard · Wendelstein, DE
• Gerhard Robl · Stein, DE

Key dates

• Filing date: Mar 6, 1985
• Grant date: Mar 24, 1987
• Expiry date: Mar 6, 2005

Classification

• Technology area (CPC G): Physics
• CPC primary: G01P3/488
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention concerns an electric measuring instrument with a connecting cable, preferably an inductive bar sensor for measuring the speed of rotating bodies, which emits electric signals in relation to the rotational speed of the body. To allow that the manufacturing and testing of the measuring instrument (10) can be carried out as economically as possible, the measuring device preferably consists of two prefabricated components (27, 28) joined in such a way that they are interlocking and moisture-proof, namely the actual measuring device consisting of a coil (13), a coil form (14), a permanent magnet (17), a flow conductor piece (15), a pole shoe (16), conductor rails (18) and a housing (20), and a connector piece (25) embedding the end of the connecting cable (22) with the conductor ends (23). Such measuring instruments (10) can be used in motor vehicles or in industry, as temperature probes, pressure sensors, rotational speed sensors or speed sensors for rotating bodies, etc.