Motor vehicle lock with three positions

An electric latch for a door leaf of a motor vehicle comprising:

• a pin adapted to pivot about an axis of the pin between a striker catch angular position and a striker release position;
• a pawl adapted to pivot about an axis of the pawl between a locking angular position in which the pawl is prone to cooperate in abutment with a sear of the pin to retain the pin in the striker catch angular position and a stowed angular position in which the pin is free to rotate about an axis of the pin;
• an opening central lever, the opening central lever bearing on the pawl and adapted to displace the pawl in the stowed angular position;
• and
• an actuator configured to occupy three stop positions and adapted to cooperate with the opening central lever, the actuator comprising:
• a driver comprising a driving toothed wheel and driven wheel, the driving toothed wheel being adapted to rotatably drive the driven wheel by a first drive member and the driven wheel including a second drive member,
• a motor configured to rotatably drive the driving toothed wheel of the driver by a worm screw;
• and
• a transfer central lever adapted to be displaced by the driven wheel of the driver by the second drive member and whose movement is adapted to be transmitted to the opening central lever to displace the pawl into the stowed angular position,
• wherein:
• one amongst the driving toothed wheel and the driven wheel of the driver comprises a first circle-arc shaped oblong slot and the other one amongst the driving toothed wheel and the driven wheel of the driver comprises the first drive member extending through the first circle-arc shaped oblong slot, the driver being adapted to perform a rotating stroke of the one amongst the driving toothed wheel and the driven wheel of the driver without rotatably driving the other one amongst the driving toothed wheel and the driven wheel of the driver;
• the electric latch comprises:
• a rocker lever having two opposite arms, the rocker lever being adapted to pivot about an axis of the rocker lever;
• the transfer central lever comprising a stop wall adapted to interface with a first arm of the rocker lever;
• and
• the rocker lever being adapted to pivot between an angular position in which the first arm comes into abutting contact with an active surface of the stop wall to block the transfer central lever in a position of displacement of the pawl in the stowed angular position, and an angular position cleared with respect to a stroke of the transfer central lever in which the first arm of the rocker lever is away from the stop wall to enable a return of the pawl back in the locking angular position;
• and
• the electric latch comprises an elastic biasing device of the rocker lever adapted to bias the rocker lever in the angular position of blocking the transfer central lever.

An electric latch for a door leaf of a motor vehicle comprising:

• a pin adapted to pivot about an axis of the pin between a striker catch angular position and a striker release position;
• a pawl adapted to pivot about an axis of the pawl between a locking angular position in which the pawl is prone to cooperate in abutment with a sear of the pin to retain the pin in the striker catch angular position and a stowed angular position in which the pin is free to rotate about an axis of the pin;
• an opening central lever, the opening central lever bearing on the pawl and adapted to displace the pawl in the stowed angular position;
• and
• an actuator configured to occupy three stop positions and adapted to cooperate with the opening central lever, the actuator comprising:
• a driver comprising a driving toothed wheel and driven wheel, the driving toothed wheel being adapted to rotatably drive the driven wheel by a first drive member and the driven wheel including a second drive member,
• a motor configured to rotatably drive the driving toothed wheel of the driver by a worm screw;
• and
• a transfer central lever adapted to be displaced by the driven wheel of the driver by the second drive member and whose movement is adapted to be transmitted to the opening central lever to displace the pawl into the stowed angular position,
• wherein:
• one amongst the driving toothed wheel and the driven wheel of the driver comprises a first circle-arc shaped oblong slot and the other one amongst the driving toothed wheel and the driven wheel of the driver comprises the first drive member extending through the first circle-arc shaped oblong slot, the driver being adapted to perform a rotating stroke of the one amongst the driving toothed wheel and the driven wheel of the driver without rotatably driving the other one amongst the driving toothed wheel and the driven wheel of the driver;
• the electric latch comprises:
• a rocker lever having two opposite arms, the rocker lever being adapted to pivot about an axis of the rocker lever;
• the transfer central lever comprising a stop wall adapted to interface with a first arm of the rocker lever;
• and
• the rocker lever being adapted to pivot between an angular position in which the first arm comes into abutting contact with an active surface of the stop wall to block the transfer central lever in a position of displacement of the pawl in the stowed angular position, and an angular position cleared with respect to a stroke of the transfer central lever in which the first arm of the rocker lever is away from the stop wall to enable a return of the pawl back in the locking angular position;
• and
• the actuator is adapted to occupy a first, a second, and a third stop positions:
• the first stop position being defined by a contact of a stop axial protrusion on one of the stops when the motor rotates in one direction;
• the second stop position being an intermediate position of the stop axial protrusion on a stop of the first circle-arc shaped oblong slot when the motor rotates in another direction;
• and
• the third stop position being defined by the contact of the stop axial protrusion on another stop.