Motor-vehicle door latch device

A motor-vehicle door latch device fixed to a door and holding the door in a closed position by engaging with a striker on a body, comprising:

• an engagement mechanism that comprises a latch engaging with the striker and a ratchet engaging with the latch when the door is closed;
• a base plate that is fixed to a body housing the engagement mechanism and is provided with a striker entrance groove into which the striker enters when the door is closed;
• a casing fixed to the base plate such that a first side surface faces a side surface on a vehicle-exterior side of the base plate;
• a releasing mechanism comprising a releasing lever that is released on the basis of a door opening operation of a manual opener device provided on the door;
• a locking/unlocking mechanism capable of shifting between an unlocked state and a locked state, wherein the unlocked state enables the ratchet to disengage from the latch by making it possible to transmit a releasing operation of the releasing lever to the ratchet and the locked state disables the ratchet to disengage from the latch by making it impossible to transmit the releasing operation of the releasing lever to the ratchet;
• an electric mechanism comprising a locking/unlocking motor that is capable of shifting the locking/unlocking mechanism electrically between the unlocked state and the locked state and a releasing motor that enables the releasing lever to be released electrically;
• and
• a closure mechanism rotating the latch from a half-latched position to a fully-latched position,
• wherein all members forming the releasing mechanism, the locking/unlocking mechanism, and the electric mechanism are arranged on a second side surface opposite the first side surface of the casing that faces the side surface of the base plate, and
• wherein all members forming the closure mechanism are arranged between the first side surface of the casing and the base plate.