Exhaust line valve and corresponding assembling process

An exhaust line valve of a vehicle, the valve comprising:

• a valve body;
• a flap positioned inside the valve body and movable relative to the valve body;
• a drive shaft to drive the flap;
• an actuator;
• an output shaft driven into rotation by the actuator;
• a coupling device comprising a driven member bound to the drive shaft, a driving member bound to the output shaft, and an elastic member;
• the coupling device having an operational state in which the driving member is laid out to drive the driven member into rotation relative to the valve body around an axis of rotation at least in a first direction of rotation, the elastic member being in a use position in which the elastic member is axially compressed between the driving member and the driven member and urges the driven member into rotation relative to the valve body around the axis of rotation in a second direction of rotation opposite to the first direction of rotation;
• and
• wherein
• the driving member comprises attachments configured to hook up the elastic member to the driving member in a temporary position in which the elastic member is elastically loaded, the temporary position being different from a use position,
• the coupling device may be brought to an intermediate state with the elastic member in the temporary position,
• the driven member comprises at least one release member configured to release at least partly the elastic member of the attachments when the coupling device is brought to the intermediate state or the elastic member, when the coupling device is in the intermediate state, may be at least partly released from the attachments, and
• the elastic member once released, adopts the use position under an effect of relaxation of the elastic load, the coupling device then adopting the operational state.