Patent ID: 7832650
Filing Date: 2010-11-16
Classification: G05D,Y10T

Abstract:
1. A hot and cold water mixing faucet comprising: a hot-water inlet and a cold-water inlet arranged in a cylindrical casing; a circular hot-water valve seat and cold-water valve seat provided face to face on inner positions of the hot-water inlet and the cold-water inlet respectively; a cylindrical control valve body, which forms a hot-water valve and a cold-water valve into a circle at both edges of the control valve body, is embedded in the cylindrical casing so as to be able to move in an axial direction; a leading end of a bias spring, whose rear end is supported by an adjusting screw, is connected to a leading end of a temperature-sensitive coil spring, whose rear end is supported by the casing such that the both leading ends face each other from both edges of the control valve body, so that the control valve body is held at a position at which the two springs of the bias spring and the temperature-sensitive coil spring are balanced; wherein the adjusting screw supporting the bias spring is screwed to an adjusting screw axis which is turned by a turning operation of a temperature-regulating dial assembled to one end of the casing; and the adjusting screw is moved in the axial direction by turning the adjusting screw axis so that the supporting position of the bias spring is changed for setup, wherein the rear end of the bias spring is supported by a supporting member formed separately from the adjusting screw, the supporting member is inserted into a through-hole provided on the adjusting screw so that the supporting member slidingly moves in the axial direction, and is connected with the adjusting screw separably by an abutting section provided in an area protruding from the through-hole toward the bias spring, and a lifting spring is disposed between the adjusting screw axis and the supporting member and is provided inside the adjustment screw, and the lifting spring, which biases the supporting member to pull the supporting member back toward the side opposite to the bias spring to the adjusting screw, is provided between an area protruding from the through-hole toward the side opposite to the bias spring and the adjusting screw, the lifting spring is incorporated so as not to cause the lifting spring to act when setting a range of normal temperature but to generate a load for biasing the control valve body toward a side of the hot-water valve seat only when setting for cold-water ejection is performed.