US 12,464,666 B2
Retractable display device
Chien-Cheng Yeh, New Taipei (TW); and Chun-Hao Huang, New Taipei (TW)
Assigned to SYNCMOLD ENTERPRISE CORP., New Taipei (TW)
Filed by SYNCMOLD ENTERPRISE CORP., New Taipei (TW)
Filed on Mar. 1, 2024, as Appl. No. 18/593,340.
Claims priority of provisional application 63/500,303, filed on May 5, 2023.
Claims priority of application No. 112214187 (TW), filed on Dec. 26, 2023.
Prior Publication US 2025/0212344 A1, Jun. 26, 2025
Int. Cl. H05K 5/02 (2006.01); F16C 11/04 (2006.01)
CPC H05K 5/0226 (2013.01) [F16C 11/04 (2013.01); H05K 5/0217 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A retractable display device, comprising:
a shaft housing extending along a first axis and including a first accommodation space and an elongated opening intercommunicating with the first accommodation space;
a plate housing assembled with the shaft housing and including a head plate, a tail plate and a semi-open second accommodation space, wherein the plate housing is able to expand and contract in and out along a second axis that is substantially perpendicular to the first axis, and the plate housing is able to change between a retracted state and an extended state;
a mandrel module located in the first accommodation space and including a first shaft and a second shaft extending along the first axis and spaced apart from each other;
a flexible roller blind wound around the first shaft in a stretchable and retractable manner;
a plurality of main support rods disposed in the second accommodation space and spaced apart from each other, wherein each of the main support rods extends substantially parallel to the first axis;
a plurality of left connecting rod groups respectively arranged between corresponding two of the main support rods, and respectively including a first left rod and a second left rod, wherein each of the first left rods and each of the second left rods are respectively pivoted on the corresponding main support rods, and any two adjacent first left rod and second left rod mesh with each other;
a flexible screen wound around the second shaft in a stretchable and retractable manner, and including a main display area, a retracting display area and a connection area connected in sequence, wherein the main display area is fixedly connected to the tail plate, and the connection area is fixedly connected to the second shaft;
a first constant torque spring constantly providing a first elastic force and including a first output spool and a first storage spool, wherein the first output spool is provided on the first shaft, the first storage spool is provided on the second shaft, and the first elastic force tends to maintain the plate housing in the retracted state via the flexible screen; and
a second constant torque spring constantly providing a second elastic force and including a second output spool and a second storage spool, wherein the second output spool is provided on the second shaft, the second storage spool is provided on the first shaft, and the second elastic force tends to maintain the plate housing in the retracted state via the flexible roller blind;
wherein when in the retracted state, each of the first left rods and each of the second left rods are adjacent to each other and substantially parallel to each of the main support rods, the tail plate is located in the head plate, and the retracting display area is retracted in the first accommodation space via the mandrel module, and wherein when in the extended state, each of the first left rods and each of the second left rods are obliquely intersecting with the corresponding main support rods respectively, the tail plate extends from the head plate, and the retracting display area is exposed from the shaft housing.