Patent ID: 11956379
Assignee: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 15:
16. An electronic device, comprising:
a housing comprising a first housing and a second housing arranged on the first housing and being slidable along a first direction, the first housing and the second housing forming a receiving structure having an opening;
a retractable screen structure arranged within the receiving structure,
wherein:
the retractable screen structure comprises:
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,
an axial direction of the shaft hole is perpendicular to the first direction, the rotation shaft assembly is arranged on a side close to the second housing, and the flexible display screen has a first end close to a bottom of the housing and a second end coupled to the first housing to cover the opening; and

a drive assembly arranged within the receiving structure and coupled to the holder, the drive assembly driving the holder to move along the first direction, wherein the drive assembly drives the holder to move along the first direction, brings the second housing and the first end of the flexible display screen to move along the first direction relative to the first housing, and allows the flexible display screen to switch between a retracted state and an expanded state,
wherein:
the rotation shaft support comprises a plurality of sub-supports spaced apart from each other on the holder, each of the sub-supports has a shaft sub-hole, respective shaft sub-holes of the plurality of sub-supports are arranged coaxially to form the shaft hole, and the rotation shaft passes through a plurality of shaft sub-holes;
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.