| 摘要 |
PURPOSE:To provide a retractor for a safety belt of which the hook part of a spring is not detached from the lock part of a cam wheel. CONSTITUTION:Because a part locking the hook part 17 of a lock part 20 projectingly provided on a cam wheel 12 has the width nearly corresponding to the hook part 17, there is actually no clearance between the upper part 16a of a spring main body 16 and the lower face 21 of the lock part 20, even if vibration is applied on them, a spring 15 is not extended, and hence the hook part 17 is not detached from the lock part 20. Further, when the cam wheel 12 is rotationally moved in the direction A of winding up a webbing, the lower face 21 of the lock part 20 is meeted with the upper part 16a of the spring main body 16 at an acute angle 82, and hence component force (f) on the cam wheel 12 side is generated on the upper part 16a of the spring main body 16 so as to be more hard to detach from the lock part 20, by hitting the lower face 21 of the lock part 20 with the spring main body 16 intending to extend due to vibration. |
