US 12,455,638 B1
Roller module
Tsung-Wen Hsueh, Taipei (TW); Chun-Che Wu, Taipei (TW); Chien-Pang Chien, Taipei (TW); Sheng-An Tsai, Taipei (TW); Kai-Wen Lee, Taipei (TW); Li-Kuei Cheng, Taipei (TW); and Heng-Tseng Liao, Taipei (TW)
Assigned to Primax Electronics Ltd., Taipei (TW)
Filed by Primax Electronics Ltd., Taipei (TW)
Filed on Oct. 7, 2024, as Appl. No. 18/908,168.
Claims priority of application No. 113130626 (TW), filed on Aug. 15, 2024.
Int. Cl. G06F 3/0354 (2013.01); G06F 3/0362 (2013.01); H02K 49/04 (2006.01)
CPC G06F 3/03543 (2013.01) [G06F 3/0362 (2013.01); H02K 49/046 (2013.01)] 56 Claims
OG exemplary drawing
 
1. A roller module, comprising:
a wheel disc rotatable along a rotation axis line;
a magnetic conductor coaxially arranged and synchronously rotated with the wheel disc, and comprising a hub and plural spokes, wherein the plural spokes are radially extended from the hub, and the plural spokes are in a radial arrangement; and
an electro-permanent magnet assembly located beside the magnetic conductor, wherein the magnetic conductor is arranged between the wheel disc and the electro-permanent magnet assembly along an axial direction parallel with the rotation axis line, and the electro-permanent magnet assembly is selectively operated in a first operating status or a second operating status,
wherein when the electro-permanent magnet assembly is operated in the first operating status, the electro-permanent magnet assembly provides a first magnetic attraction force to at least one spoke of the plural spokes in the axial direction,
wherein when the electro-permanent magnet assembly is operated in the second operating status, the electro-permanent magnet assembly provides a second magnetic attraction force to at least one spoke of the plural spokes in the axial direction,
wherein the first magnetic attraction force is greater than the second magnetic attraction force.