Patent ID: 7445129

Claim:
A holding device comprising: a base with a first protrusion and a second protrusion and a receiving space defined between the protrusions, the first protrusion having a hole defined in an inside thereof and a clamping member movably received in the first protrusion, the clamping member having a frictional portion movably extending through the hole and protruding into the receiving space; a biasing device connected between the clamping member and the first protrusion so that the clamping member is biased toward the hole when not in use, and a positioning device adapted to be fixed on a wall and the base being fixed on the positioning device; wherein the clamping member has an eccentric shaft which has a first end connected to a protrusion on an upright inner end of the first protrusion and a second end of the eccentric shaft has a slit, the biasing device being a torsion spring having a first end thereof connected to the slit and a second end of the torsion spring being connected to a positioning stub on the first protrusion.