| 摘要 |
A bridge flex machine includes a base composed of a first rod, a second rod and two transverse rods mounted between the first and second rods, a triangular block mounted on the base and located to the first rod, a U-shaped member slantingly inserted into the triangular member and fixedly mounted thereon by a bolt, an oscillating rod pivotally connected with upper ends of the U-shaped member, a rectangular frame arranged on the oscillating rod, a vertical rod with a U-shaped cross section vertically mounted on an intermediate portion of the base, a T-shaped rod vertically inserted in the vertical rod, a U-shaped rod mounted on the base, a rectangular rack pivotally mounted on two ends of the U-shaped rod, and a foldable rod having an end pivotally connected to a bottom of the rectangular rack and another end pivotally connected to an end of the oscillating rod, whereby one may use the machine to release pains and aches in the back and waist.
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