Title:
Pretensioner mechanism
Document Type and Number:
Japanese Patent JP6010477
Kind Code:
B2
Abstract:
In a webbing take-up device, due to actuation of a pre-tensioning mechanism when a vehicle collision, a piston is moved, rack teeth of the piston mesh with pinion teeth of a pinion, causing the pinion rotate and a spool to be rotated in the take-up direction. In a state where a large rotational force in the pull-out direction is acting from an occupant on the pinion, through a webbing and the spool, a rack tooth is broken by a pinion tooth when the rack teeth initially mesh with the pinion teeth, especially by a tip end of the rack tooth meshing with the pinion tooth. Therefore, sticking-in of the pinion teeth rack teeth and the pinion teeth can be suppressed, or easily eliminated, enabling loss in force transmitted from the piston to the pinion to be reduced.
Inventors:
Ryokawa
Yu Ukita
Yu Ukita
Application Number:
JP2013023780A
Publication Date:
October 19, 2016
Filing Date:
February 08, 2013
Export Citation:
Assignee:
Tokai Rika Electric Co., Ltd.
International Classes:
B60R22/46
Domestic Patent References:
| JP2004301331A | ||||
| JP8207706A | ||||
| JP2000302011A |
Foreign References:
| DE102006031359A1 |
Attorney, Agent or Firm:
Atsushi Nakajima
Kato Kazunori
Hiroshi Fukuda
Kato Kazunori
Hiroshi Fukuda