Bendix Electronics S.a.

Renix Electronique

Patrice Oliveau

Gilbert Echasseriau

Philippe LeFevre

The invention is in the field of electromagnetic transducers. The sensor according to the invention includes an electrical winding 2 mounted on a carcass 1 hollowed with a cavity 7 which receives a metal pole piece 5 and a permanent magnet 6. According to the invention inclined ribs 20 are formed in the cavity 7 in order to constitute a means of progressively locking the magnet by the wedge effect during the insertion of this magnet and of the pole piece into the cavity. It is thus possible to accurately adjust the distance d which separates the end 21 of the pole piece from a reference surface 22 of the carcass 1. Application to the production of a shaft speed sensor or a wheel speed sensor for a motor vehicle.

Variable reluctance electromagnetic sensor with pole piece-magnet

Housing (14) for an electrical device (10), comprising a first cavity (16) inside which the functional part of (12) of the system is arranged, and a second cavity (18) for performing an electrical connection, which is separated from the first cavity by a leak-tight wall (20) through which a metal lug (22) for making an electrical connection passes, a first end (36) of the said lug, which is situated inside the first cavity (16), ensuring an electrical connection wth the functional part of the system and the second end (26) of the said lug, which is situated inside the second connection cavity (18), being provided with means (28) for ensuring electrical connection (10) with an electrical wire (30).

Housing for an electrical device

A stationary case has a resistive track. An elastic wiper is carried by a rotor mounted to rotate in the case and able, during operation, to rub against the resistive track, and a spring is placed between the stationary case and the rotor to pull the rotor to a rest position. The case provides at least one housing able to receive the wiper without initial stress or deformation in an initial position of introduction of the rotor in the case and to allow the wiper to come in contact with the track during mounting of the rotor in the case by rotation of said rotor between its introduction position and its rest position. Application is to measuring the angular position of the throttle valve of an internal combustion engine.

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Toulouse, France

Patrice Oliveau