| 摘要 |
A seat belt device securely preventing careless engagement even when tongue plates are erroneously inserted, comprising first and second buckle devices (1) and (2) having the tongue plates (3) and (4) and buckle bodies (5) and (6). The buckle bodies (5) and (6) further comprise frames (17A) and (17B), ejectors (20A) and (20B), hook members (18A) and (18B) engaged with engagement holes (14A) and (14B) formed in the tongue plates (3) and (4), and release buttons (21A) and (21B). The first tongue plate (3) is formed so that a dimension (N) from its insert side end to the engagement hole (14A) is longer than a dimension (P) from the insert side end to the engagement hole of the second tongue plate (4), and a dimension (L) from the contact part (47A) to the pressingly moving part (48A) of the ejector (20A) of the first buckle body (5) is shorter than a dimension (M) from the contact part to the pressingly moving part of the ejector (20A) of the second buckle body (6). A suppressing projected part (61) suppressing the rotation of the hook member (18A) in the engagement direction is formed on the ejector (20A) of the first buckle body (5). |
