| 摘要 |
The present invention is a webbing take-up device in which the pulling out amount of the webbing can easily be ensured during an emergency of a vehicle. During an emergency of the vehicle, the webbing take-up shaft (16) in the webbing take-up device (10) is locked by a pair of energy absorbing gears (22). When winding/tightening load of a webbing (14) increases, the fastening force by which a male thread (46) of the energy absorbing gear (22) is screwed into a female thread (44) of an energy absorbing ring (34) increases. Accordingly, when force of a predetermined value or more has been applied to a shear pin (50) and the shear pin (50) is bent in a direction of arrow H, the energy absorbing gear (22) can rotate in a fastening direction so that the webbing (14) is fed out.
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