US 11,834,870 B2
Motor-driven door latch for vehicle
Jinwoo Nam, Seoul (KR); Kyoung Taek Kwak, Yongin-si (KR); and Jungho Han, Seoul (KR)
Assigned to Hyundai Motor Company, Seoul (KR); and Kia Motors Corporation, Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); and Kia Motors Corporation, Seoul (KR)
Filed on Jun. 14, 2019, as Appl. No. 16/441,995.
Claims priority of application No. 10-2019-0019247 (KR), filed on Feb. 19, 2019.
Prior Publication US 2020/0263458 A1, Aug. 20, 2020
Int. Cl. E05B 81/16 (2014.01); E05B 81/34 (2014.01); E05B 85/24 (2014.01); E05B 81/76 (2014.01); E05B 81/36 (2014.01)
CPC E05B 81/16 (2013.01) [E05B 81/34 (2013.01); E05B 81/36 (2013.01); E05B 81/76 (2013.01); E05B 85/243 (2013.01); E05Y 2900/531 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A motor-driven door latch for a vehicle having a vehicle body, the motor-driven door latch comprising:
a catch part configured to catch a striker mounted on the vehicle body;
a door locking and releasing part including a main motor and configured to apply torque to the catch part through the main motor to allow the catch part to be locked to or released from the striker; and
a pop-out part including an auxiliary motor configured to apply torque to the catch part so that a door of the vehicle is popped out from the vehicle body after the catch part is released from the striker,
wherein the catch part comprises:
a catch having a locking groove configured to catch or release the striker and a catch gear integrally formed on one side of the catch, the catch and the catch gear fixed together and rotatably movable, and
a pawl configured to:
limit a rotation of the catch when in close contact with the catch, or
allow the catch to be freely rotatable,
wherein the door locking and releasing part comprises:
the main motor configured to rotate in a clockwise direction and an anticlockwise direction, the main motor comprising:
a first drive gear,
a first driven gear engaged with the first drive gear,
a pawl release lever coupled to the pawl and configured to be rotated together with the pawl, and
an operating lever engaged with the first driven gear and configured to:
receive the torque through the first driven gear, and
rotate the pawl release lever in order to bring the pawl in close contact with the catch or separate it from the catch,
wherein the auxiliary motor includes a second drive gear configured to apply the torque to the catch through a gear mechanism of the pop-out part between the second drive gear and the catch gear integrally formed on the catch, and
wherein the gear mechanism of the pop-out part comprises:
a second driven gear engaged with the second drive gear, and
a third driven gear engaged with the second driven gear and simultaneously engaged with the catch gear of the catch.