Control unit under the steering wheel and associated assembly method

摘要

The behind-steering wheel control module comprises a casing on which a rotary electrical contact switch is mounted, a rotor (28) and a stator (26), an angular indexing sleeve, and a removable cover to envelope the upper axial end section of the indexing sleeve so as to deny access to the indexing sleeve. The indexing sleeve moves between an indexing position in which it immobilizes the rotor in a given angular position relative to the stator and a neutral position in which the rotor turns relative to the stator. The removable cover comprises an embedding unit for fixation. The behind-steering wheel control module comprises a casing on which a rotary electrical contact switch is mounted, a rotor (28) and a stator (26), an angular indexing sleeve, and a removable cover to envelope the upper axial end section of the indexing sleeve so as to deny access to the indexing sleeve. The indexing sleeve moves between an indexing position in which it immobilizes the rotor in a given angular position relative to the stator and a neutral position in which the rotor turns relative to the stator. The removable cover comprises an embedding unit for fixation on an element of control module, where the embedding unit cooperates with an additional unit arranged on electrical contact switch. The embedding unit is arranged on an external tubular partition of the cover inserted axially between the rotor and the sleeve, and comprises a sectional spring and a fixation clip for axially embedding in an interlocking notch associated with the switch. The spring is provided for embedding the cover in a cavity fixed on the electric switch, and blocked in the cavity to visually warn the primary mounting. The interlocking notch comprises angular portions for locking and unlocking of the cover on the switch, and a boss arranged between two portions to maintain the fixation clip in phase-locked position. The cover comprises an axial guiding unit cooperating with a portion of the steering column to guide the module during its assembly. An independent claim is included for a method for assembling a behind-steering wheel control module.