US 11,956,379 B2
Retractable screen structure and electronic device
Pengfei Li, Beijing (CN); and Zhenhua Liu, Beijing (CN)
Assigned to BEIJING XIAOMI MOBILE SOFTWARE CO., LTD., Beijing (CN)
Filed by BEIJING XIAOMI MOBILE SOFTWARE CO., LTD., Beijing (CN)
Filed on Dec. 21, 2021, as Appl. No. 17/557,294.
Claims priority of application No. 202110713494.8 (CN), filed on Jun. 25, 2021.
Prior Publication US 2022/0417354 A1, Dec. 29, 2022
Int. Cl. H04M 1/02 (2006.01); G09F 9/30 (2006.01)
CPC H04M 1/0268 (2013.01) [G09F 9/301 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A retractable screen structure, comprising:
a holder assembly comprising a holder;
a rotation shaft assembly comprising:
a rotation shaft support coupled to a side of the holder and having a shaft hole,
a rotation shaft passing through the shaft hole,
a rotation wheel fitted over the rotation shaft; and
a flexible display screen wound around the rotation wheel, and driving the rotation wheel to rotate when the flexible display screen is expanded or retracted,
wherein:
the rotation shaft support comprises a plurality of sub-supports spaced apart from each other on the holder;
the rotation shaft assembly further comprises a plurality of first bearings fitted over the rotation shaft, and each first bearing comprises a bearing inner ring and a bearing outer ring rotatably coupled to the bearing inner ring;
the rotation shaft assembly further comprises a plurality of bearing spacers fitted over the rotation shaft, one bearing spacer being arranged on a side of each first bearing; and
each bearing spacer has a first end abutting against the bearing inner ring and a second end abutting against an adjacent sub-support.