Patent ID: 7233141

Claim:
A process for manufacturing a wheel speed sensor for a vehicle, which comprises: placing a cable ( 15 ) in a mold, said cable comprising electrical wires ( 25 a , 25 b ) provided with pins ( 17 a , 17 b ) for connection between the sensor and a means of processing data acquired by said sensor, and interposing a separator ( 26 ) locally between said wires and/or their pins, avoiding any electrical contact between these wires and these pins at least during a subsequent molding step; molding a first casing portion ( 3 ) around one end of the cable and around the pins joined to the wires, leaving open at least one cavity ( 7 ) in which at least one portion of said pins is located, these being intended to ensure electrical contact between the wires and connection blades ( 19 a , 19 b ) with which a detection member for detecting the rotation speed of the wheels of the vehicle is provided, reserving a region ( 31 ) in the cavity for housing the detection member and its blades ( 21 ; 22 , 19 a , 19 b ), and providing, on at least one portion of the periphery of this cavity, a rim ( 33 ) lined on the inside, at least locally, by a wall ( 35 ), in order to define a fusible region; placing the detection member ( 22 ) of the sensor at that point in the region ( 31 ) that is reserved for it in the cavity; welding or soldering the pins and the blades ( 19 a , 19 b ) of the detection member to each other in the cavity, said detection member being held in place with respect to the casing by retention lugs ( 43 , 45 ) that are molded with said first casing portion; and closing the cavity, facing the pins and the detection member, with a second casing portion ( 5 ) fusion-bonded at the point of the fusible region ( 35 ).