Device and method for mounting and orienting a sensor on a support

A device for assembling together at a determined orientation both a sensor (3) provided with a thread (6) and a support (2) having a tapped hole (12), the device comprising an assembly element (8) presenting a longitudinal axis (A) and including firstly, at one end, a first threaded portion (9) adapted to co-operate with the thread (6) of the sensor, and secondly, at its opposite end, a second threaded portion (11) adapted to co-operate with the tapped hole (12) of the support, the first and second threaded portions (9, 11) possessing thread pitches such that the ratio of the pitch of the second portion over the pitch of the first portion is not equal to 1, the device being characterized in that it includes a washer (14) presenting on one side a bearing face (15) for bearing against the sensor, and on its other side, a contact face (16) for contacting the support, the washer (14) being provided with a through bore (25) for mounting the assembly element so that the first threaded portion (9) is accessible from the bearing face (15) and the second threaded portion (11) projects from the contact face (16), the washer (14) and the assembly element (8) being arranged to include between them an assembly system (30) serving firstly to provide connection in rotation about the longitudinal axis between the assembly element (8) and the washer (14), and secondly freedom to move in translation along the longitudinal axis (A) between the assembly element (8) and the washer (14), the washer (14) including grip means suitable, when the washer lies between the sensor (3) and the support (2), firstly for enabling the washer (14) to be held stationary while the sensor is being turned relative to the washer, and secondly to enable the washer (14) to be turned with its contact face (16) in contact with the support (2) while the sensor (3) is held stationary.