| 摘要 |
A strap-tightening apparatus includes a base, a handle pivotally disposed on the base and a hollow reel rotationally disposed on the base for reeling a strap. A first spring-loaded detent is disposed on the base. A second spring-loaded detent is disposed on the handle. The ratchet wheels are attached to the hollow reel. The ratchet wheels engage with the second spring-loaded detent during the rotation of the handle in a direction so that the handle causes the hollow reel to reel in the strap. The ratchet wheels engage with the first spring-loaded detent in the rotation of the handle in an opposite direction so that the handle does not cause the hollow reel to reel out the strap. The recovering element is formed with a first end connected to the hollow reel and a second end connected to the base for causing the reel to reel out the strap.
|
