US 12,129,137 B2
Webbing winding device
Takamasa Sato, Aichi (JP); and Motoki Sugiyama, Aichi (JP)
Assigned to KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO, Aichi (JP)
Appl. No. 17/909,305
Filed by KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO, Aichi (JP)
PCT Filed Mar. 18, 2021, PCT No. PCT/JP2021/011145
§ 371(c)(1), (2) Date Sep. 2, 2022,
PCT Pub. No. WO2021/193366, PCT Pub. Date Sep. 30, 2021.
Claims priority of application No. 2020-053432 (JP), filed on Mar. 24, 2020.
Prior Publication US 2023/0086721 A1, Mar. 23, 2023
Int. Cl. B60R 22/44 (2006.01); B60R 22/34 (2006.01); B65H 18/10 (2006.01)
CPC B65H 18/10 (2013.01) [B60R 22/34 (2013.01); B60R 22/44 (2013.01); B65H 2403/72 (2013.01); B65H 2403/80 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A webbing winding device comprising:
a spool to which a longitudinal proximal end of a long belt-shaped webbing is locked and which winds the webbing from a longitudinal proximal end side of the webbing by rotation in a winding direction;
a drive unit that is driven to rotate an output shaft;
a first rotation transmission unit that is coupled to the output shaft, receives input due to rotation of the output shaft, transmits the rotation of the output shaft in a predetermined direction to the spool in a state in which the rotation is transmissible to the spool, and rotates the spool in a winding direction;
a second rotation transmission unit that is coupled to the output shaft, receives input due to rotation of the output shaft, sets a reduction ratio of rotation of the output shaft from the output shaft to the spool to be larger than a reduction ratio of the first rotation transmission unit, transmits the rotation of the output shaft to the spool in a state in which the rotation is allowed to be transmitted to the spool, and rotates the spool in a winding direction; and
a switching unit that switches a transmission path of rotation from the output shaft to the spool from the first rotation transmission unit to the second rotation transmission unit in a case in which, in a state in which the rotation of the output shaft of the drive unit in the predetermined direction is transmitted to the spool via the first rotation transmission unit, a rotation speed of the spool due to transmission of rotation via the first rotation transmission unit is lower than a rotation speed of the spool when the rotation is transmitted to the spool via the second rotation transmission unit.