Patent ID: 6676058
Filing Date: 2004-01-13
Classification: B60R

Abstract:
A webbing retractor comprising:a spool taking up a webbing, for restraining a vehicle occupant, in a roll form by urging force; an energy absorbing member connected coaxially to the spool and usually rotating integrally with the spool, and in a state in which rotation of the energy absorbing member in a webbing pull-out direction is impeded, the energy absorbing member deforms due to load of a predetermined value or more being applied to the energy absorbing member via the spool, and permits a predetermined amount of rotation of the spool in the webbing pull-out direction; a locking device which stops rotation of the energy absorbing member in the webbing pull-out direction, at a time of rapid deceleration of a vehicle; a resistance imparting member whose one end portion is fixed to the locking device and another portion of which is anchored at the spool, and the resistance imparting member comprises a concave groove in an outer peripheral surface of the one end portion, and the resistance imparting member usually rotates integrally with the spool without imparting rotational resistance to the spool, and after locking by the locking device, in an initial stage in which the spool rotates in the webbing pull-out direction, the resistance imparting member imparts resistance to rotation of the spool in the webbing pull-out direction, and thereafter, separates from the spool and cancels a state of imparting resistance; and a push nut provided at a portion of the locking device and comprising a plurality of engagement pieces, and a length of one or more the engagement pieces is substantially longer than a length of other engagement pieces, and due to an operation of pressing-in the push nut, the plurality of engagement pieces substantially deform and engage with the concave groove of the resistance imparting member.