| 摘要 |
PURPOSE: To provide a webbing winding device capable of increasing an energy absorbing amount and having a force limiter mechanism capable of surely absorbing an energy. CONSTITUTION: When a spool 20 is rotated in a pull-out direction relative to a lock base 40, an insert part 66 is forcibly pulled out from an insert hole 56 while being deformably ironed by the wall part 54A of a guide groove 54, end face 44A of a large diameter part 44, and opening edge 56A of an insert hole 56. An ironing load in this case becomes a force limiter load. The insert part 66 is joined to a fixed part 64 through a curved part 62, and deformed along the extension of the curved part 62. Therefore, a wire 60 can be prevented from being broken by a shearing stress concentrated on a part of the wire 60, and the ironing load surely applied to the wire 60 to the rotating position of the spool 20 relative to a preset lock base 40 can be provided as the force limiter load.
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