Patent ID: 7753305

Claim:
A seatbelt retractor comprising: a take-up drum on which a webbing is wound; a torsion bar inserted through the take-up drum and biased in the direction of the webbing being taken up, wherein one end of the torsion bar is coupled with one end of the take-up drum in a manner that a relative rotation with the take-up drum is impossible; an emergency lock mechanism located on the other end of the torsion bar, which restrains a rotation in the direction of the webbing being pulled out; a lock actuating device which actuates the emergency lock mechanism in case of a vehicle emergency; a plate body having a take-up part on a take-up side of the plate body, wherein the take up side of the plate body is adjacent to a side on an other end of the take-up drum, and wherein the plate body is coupled with the other end of the torsion bar in a manner that a relative rotation with the torsion bar is impossible; a wire, wherein one end of the wire is coupled with the take-up part of the plate body, wherein a wound part of the wire is not wound up on the take-up part, wherein a middle part of the wire is provided at a position along the wire which is between the one end of the wire and the wound part of the wire, wherein the middle part of the wire is located in a curved path formed on a periphery on the other end of the take-up drum, and wherein the wire is wound up on the take-up part by the take-up drum in case of a vehicle emergency; and a disk member located between the take-up drum and the plate body and coupled with the plate body at a distance of approximately the diameter of the wire from the plate body in a manner that a relative rotation with the plate body is impossible, and wherein the disk member covers the take-up part of the plate body and the wound part of the wire which is not wound up on the take-up part, wherein the wound part of the wire which is not wound up on the take-up part is provided in an axial direction of the torsion bar between the disk member and the take-up drum.