| 摘要 |
A belt reel assembly includes a main frame and a lever pivotally mounted to each other by an axle. The main frame has a first stop plate slidably mounted to selectively engage to ratchet that id mounted on the axle and the lever has a second stop plate mounted to drive the ratchet. A groove is defined in the main frame and has one side formed with a limiting side. The strain of the belt can reverse the axle to release the belt when the stop plate of the lever is moved within the groove. The ratchet drive the stop plate to abut the limiting side and then the ratchet is engaged to the stop plate of the main frame and stopping release the strain of the belt to accomplish the function of releasing the strain of the belt step by step.
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