| 摘要 |
A removable installation frame comprises a mounting base having a rectangular tunnel and an opening contiguous to the tunnel. An accessory platform has two projecting tabs, a horizontally oriented hole disposed through each of the two projecting tabs, a nut in the outer side of the hole in one projecting tab and a receiving pit respectively formed along the inner and outer side of the hole in the other projecting tab. A tang includes a transverse rod tube, planar ratchets disposed at one end of the rod tube, an opening and an elastic element having a pawl at the terminus of its two surfaces. A locating ring is a washer-type annular body having lateral ratchets that correspond to the planar ratchets of the rod tube and a lock ring is a liner tube-like annular body. A fixing bolt is a threaded rod having a wing nut at one extremity.
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