US 11,787,363 B2
Webbing take-up device
Atsushi Nishino, Aichi (JP); Takuhiro Saito, Aichi (JP); Kazuhiro Yamada, Aichi (JP); and Chihiro Matsuoka, Aichi (JP)
Assigned to KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO, Aichi (JP)
Appl. No. 17/279,985
Filed by KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO, Aichi (JP)
PCT Filed Sep. 24, 2019, PCT No. PCT/JP2019/037222
§ 371(c)(1), (2) Date Mar. 25, 2021,
PCT Pub. No. WO2020/066990, PCT Pub. Date Apr. 2, 2020.
Claims priority of application No. 2018-181197 (JP), filed on Sep. 27, 2018.
Prior Publication US 2021/0394708 A1, Dec. 23, 2021
Int. Cl. B60R 22/38 (2006.01); B60R 22/343 (2006.01); B60R 22/48 (2006.01)
CPC B60R 22/38 (2013.01) [B60R 22/343 (2013.01); B60R 22/48 (2013.01); B60R 2022/4825 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A webbing take-up device comprising:
a spool that is rotated in a take-up direction to take up webbing for fitting over an occupant, and that is rotated in a pull-out direction when the webbing is pulled out;
a first rotation body that is capable of transmitting rotation force; and
a lock section that is provided so as to be capable of rotating integrally with the spool, and that is capable of engaging with the first rotation body; and
a motor that is capable of rotating the first rotation body,
the webbing take-up device being configured such that
in a vehicle emergency, the spool is rotated together with the lock section in the pullout direction due to the webbing being pulled out from the spool, so that the lock section is displaced to engage with the first rotation body that has been held fast so that rotation of the first rotation body is restricted, whereby rotation of the spool in the pull-out direction is restricted and the webbing is restricted from being pulled out from the spool, and
in a vehicle emergency, the first rotation body is rotated by the motor in the take-up direction of the spool, so that the lock section is displaced with respect to the first rotation body which is rotated by the motor and engages with the first rotation body such that rotation force of the first rotation body is transmitted to the spool through the lock section, whereby the spool is rotated in the take-up direction and the webbing is taken-up on the spool.