| 摘要 |
A webbing insertion member in which a webbing hardly shifts within an opening during the operation of a pretensioner mechanism. The insertion member includes a bearing portion and an opening through which the webbing passes. In order to prevent the shifting of the webbing in the longitudinal direction of the opening, the length of the opening is substantially the same or slightly greater than the width of the seat belt. As a result, the left and right sides of the webbing confront the ends of the opening to thereby prevent the webbing from shifting laterally in the opening.
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