US 12,226,064 B2
Dish washer with eccentric protrusion in power transfer assembly
Seyoung Woo, Seoul (KR); Joonho Pyo, Seoul (KR); and Daegyu Kim, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Jan. 8, 2024, as Appl. No. 18/406,890.
Application 16/864,650 is a division of application No. 15/615,357, filed on Jun. 6, 2017, granted, now 10,660,498, issued on May 26, 2020.
Application 15/615,357 is a division of application No. 15/013,049, filed on Feb. 2, 2016, granted, now 10,390,676, issued on Aug. 27, 2019.
Application 18/406,890 is a continuation of application No. 17/958,867, filed on Oct. 3, 2022, granted, now 11,903,543.
Application 17/958,867 is a continuation of application No. 16/864,650, filed on May 1, 2020, granted, now 11,490,778, issued on Nov. 8, 2022.
Claims priority of application No. 10-2015-0016157 (KR), filed on Feb. 2, 2015; application No. 10-2015-0016158 (KR), filed on Feb. 2, 2015; and application No. 10-2015-0053149 (KR), filed on Apr. 15, 2015.
Prior Publication US 2024/0138649 A1, May 2, 2024
Int. Cl. A47L 15/23 (2006.01); A47L 15/22 (2006.01); A47L 15/42 (2006.01)
CPC A47L 15/23 (2013.01) [A47L 15/22 (2013.01); A47L 15/4282 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A dishwasher comprising:
a tub with a space configured to accommodate objects to be washed;
a pair of main arms that are provided in the tub and that extend in a first direction and a second direction that is opposite to the first direction, and that are configured to spray wash water to the objects,
a pair of auxiliary arms that extend in a third direction different from the first direction and the second direction, and that are spaced apart from the main arms by a predetermined angle, the auxiliary arms being configured to spray wash water to the objects while rotating about a rotation axis that extends in the third direction;
an arm holder detachably inserted into the tub to support the main arms to be rotated in a floating state and configured to define a channel through which wash water flows to the main arms or the auxiliary arms;
a fixed gear that is fixed to a lower part of the tub, the fixed gear including gear teeth provided at an outer circumferential surface of the lower part of the tub;
a rotary gear rotatably mounted to the first arm or second arm and configured to engage with the gear teeth of the fixed gear, the rotary gear including an eccentric protrusion that is eccentric from a center of rotation of the rotary gear; and
a link member configured to convert a rotary force of the rotary gear into the linear reciprocating movement, and to reciprocally rotate the auxiliary arms using a predetermined elastic force,
wherein the main arms comprises an arm holder coupling unit disposed at a bottom surface of the main arms and include at least a portion of the arm holder accommodated therein, and
wherein the fixed gear comprises:
a rim part that prevents the arm holder from being separated in which an arm holder coupling unit is inserted in the center and has gear teeth formed on the outer circumferential surface; and
a gap protrusion provided in a plurality and protrude toward a center of the rim part to reduce a gap between the rim part and the arm holder coupling unit.