Patent ID: 8590824
Filing Date: 2013-11-26
Classification: B60R

Abstract:
1. A seatbelt retractor comprising a take-up drum that takes up and stores a webbing, a torsion bar which is fixed to the take-up drum at one end thereof and twisted and deformed in response to a load in a webbing-pull-out direction in a case of vehicle collision, a slit which is formed in parallel to a rotational axis of the take-up drum and allows one end of the webbing to pass through, and a slip-off prevention member which is provided at the one end of the webbing and prevents the webbing from going out from the slit, wherein the take-up drum comprises: wherein the slit is formed in a direction of a tangent line of an outer diameter of the take-up drum so that a radially inner side face thereof with respect to the rotational axis of the take-up drum abuts on a projecting portion projecting radially and outwardly from the spline, and to reach the flange portion at the one-end side of the take-up drum in a direction of the rotational axis, and wherein the slip-off prevention member is formed to have substantially same length as width of the webbing, to be placed at a holding portion of the take-up drum which has a concave shape formed so as to be recessed inwardly in a radial direction of the take-up drum along one outer peripheral portion of the radially inner side face of the slit, and to be arranged so that a flange-side end portion of the slip-off prevention member faces the spline with the holding portion positioned therebetween.