| 摘要 |
A safety belt locking device for a safety belt retractor having a shaft rotatably mounted on a frame is provided. The safety belt locking device includes a velocity change sensor for sensing a velocity change of the vehicle, a lever for transferring the velocity change to a locking mechanism for locking a rapid protraction of the safety belt. The locking mechanism comprises a ratchet wheel being fixedly mounted on the shaft, a cam plate being rotatably mounted on the shaft while being disposed adjacent the ratchet wheel, the cam plate having a bifurcated portion defining a space and a guide member at its one side, a L-shaped latch having a long leg slidably held by the guide member and a short leg being disposed engageable with the teeth of the ratchet wheel, and a ratchet pawl with a pair of oppositely outwardly extending arms being rotatably mounted on the frame, one of the arms being placed in the place defined by the bifurcated portion while the other being disposed engageable with the teeth of the ratchet wheel. |
