US 12,262,490 B2
Rollable electronic device including rack gear
Bohyeon Kim, Suwon-si (KR); Myunghoon Kwak, Suwon-si (KR); Changryong Heo, Suwon-si (KR); Yangwook Kim, Suwon-si (KR); Soohyun Seo, Suwon-si (KR); Yeonggyu Yoon, Suwon-si (KR); and Jookwan Lee, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Dec. 7, 2022, as Appl. No. 18/076,832.
Application 18/076,832 is a continuation of application No. PCT/KR2022/017051, filed on Nov. 2, 2022.
Claims priority of application No. 10-2022-0000135 (KR), filed on Jan. 3, 2022; and application No. 10-2022-0003826 (KR), filed on Jan. 11, 2022.
Prior Publication US 2023/0217612 A1, Jul. 6, 2023
Int. Cl. H05K 5/02 (2006.01)
CPC H05K 5/0217 (2013.01) 20 Claims
OG exemplary drawing
 
1. An electronic device comprising:
a housing comprising a first housing and a second housing configured to accommodate at least a part of the first housing and to move relative to the first housing;
a display configured to unfold based on sliding of the first housing;
a motor structure disposed in the housing and configured to generate driving power for sliding of the first housing;
a pinion gear configured to rotate based on the driving power generated by the motor structure; and
a rack gear disposed in the housing and configured to mesh with the pinion gear,
wherein the rack gear comprises:
a first part made of a first material having a first thermal conductivity, the first part comprising at least one recess and first gear teeth configured to at least partially mesh with the pinion gear, and
a second part comprising a lower area disposed below the first part, at least a part of the second part being accommodated in the at least one recess, the second part being made of a second material having a second thermal conductivity higher than the first thermal conductivity.