Patent ID: 7597179

Claim:
A signal receiving mechanism, comprising: a cord reel including an axially extended hollow tubular body and an inner annular section horizontally located around an inner wall surface of said hollow tubular body; said hollow tubular body being provided on a wall thereof lower than said inner annular section with a horizontally extended through opening, and said inner annular section being formed at a predetermined position with a passage that vertically extends through the inner annular section; a cord including a first wire and a second wire that are different in an electric polarity thereof, and at least part of said cord being wound around said hollow tubular body with an inner end of said cord extended through said through opening on said cord reel into a space of said cord reel below said inner annular section; a signal receiving element being assembled to said hollow tubular body of said cord reel to locate in a space above said inner annular section; a lower end of said signal receiving element being downward extended through said passage on said inner annular section into the space of said cord reel below said inner annular section, so as to electrically connect to said first wire at the inner end of said cord; a grounding unit including a first annular conductive plate and a conduction module that are in contact with each other; said first annular conductive plate being set at an underside of said inner annular section of said cord reel to electrically connect to said second wire at the inner end of said cord; and a pivot unit for rotatably connecting said cord reel to said grounding unit, such that said first annular conductive plate along with said cord reel and said cord may be rotated relative to said conduction module at the same time.