US 12,410,549 B2
Door lock device
Jang-Joo Lim, Seoul (KR); Sang-Won Suh, Jeongeup-si (KR); Jung-Gil Lee, Jeongeup-si (KR); and Hee-Chang Kim, Jeongeup-si (KR)
Assigned to DUAL POWER ELECTRONICS CO., LTD, Jeongeup-si (KR)
Filed by DUAL POWER ELECTRONICS CO., LTD, Jeongeup-si (KR)
Filed on Oct. 6, 2022, as Appl. No. 17/938,503.
Application 17/938,503 is a continuation of application No. PCT/KR2021/002749, filed on Mar. 5, 2021.
Claims priority of application No. 10-2020-0068191 (KR), filed on Jun. 5, 2020.
Prior Publication US 2023/0024919 A1, Jan. 26, 2023
Int. Cl. D06F 39/14 (2006.01); D06F 37/42 (2006.01)
CPC D06F 39/14 (2013.01) [D06F 37/42 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A door lock device for washing machine, the door lock device comprising:
a case having an inner space;
an opening/closing portion provided in the inner space and configured to open and close a door according to entry and retraction of a hook connected to the door; and
a locking portion distinguished from the opening/closing portion and configured to form an independent anterior chamber and to lock or unlock the door,
wherein the opening/closing portion comprises:
a locker configured to couple to or separate from the hook through a rotational motion in response to the entry and the retraction of the hook; and
a cam spring configured to provide a rotational restoring force to the locker through a connection to the locker, and
the locking portion comprises:
a solenoid configured to generate a linear thrust by an input electrical signal;
a shaft configured to linearly move by the linear thrust generated from the solenoid;
a slider configured to linearly move with the shaft through a connection to the shaft;
a fixed cam formed in a top surface of the slider;
a cam pin configured to control a linear motion of the slider through a connection to one side of the fixed cam;
an elastic member configured to provide a restoring force to the slider;
a protrusion formed on a bottom surface of the slider; and
a locker slide positioned below the slider,
wherein the locker slide comprises:
a moving track in which the protrusion is located, wherein the moving track is formed in the locker slide and has a first portion, which extends in parallel with a longitudinal direction of the elastic member, and a second portion, which extends in a direction inclined toward the opening/closing portion, wherein the second portion has a first distal end, which is connected with the first portion, and a second distal end, which is positioned closer to the opening/closing portion than the first distal end; and
a locker seating groove positioned at one end of the locker slide and configured to seat and fasten the locker, and
wherein the linear motion of the slide causes the locker slide to move in a direction different from the linear motion of the slider through an engagement of the protrusion with a shape of the second portion of the moving track, so as to fasten the locker.