| 摘要 |
PROBLEM TO BE SOLVED: To increase sensitivity (decrease a static lock angle) when the whole of a vehicle body is inclined even in a case of an acceleration sensor device to vary an attitude to a car body. SOLUTION: A bracket 28 is rotatably supported at a housing fixed on the car body side, and a sensor ball 30 to drive an output member brought into inertia movement according to acceleration exerted on a vehicle is placed on the ball support part, formed in the shape of a truncated cone, of the bracket 28. The bracket 28 is brought into a constant attitude through rotation of the bracket 28 by a weight 26 attached to the bracket 28. Rotation operation of the bracket relative to a housing is blocked or rotatably released in correspondence to mounting and demounting of a buckle and operation of a lever or through operation of it by a control device or by bracing means corresponding to webbing tension detecting means and rotation direction detecting means for a spool axis in a retracter. |
