Patent ID: 8151819
Filing Date: 2012-04-10
Classification: F16K,F17C,Y02E,Y10T

Abstract:
1. A fluid supply valve attachment device comprising: a tank that has a first inner peripheral surface which forms a mounting hole and a fluid tank chamber that communicates with the mounting hole; a fixing member that is fit to the mounting hole of the tank, which has a first outer peripheral surface that faces the first inner peripheral surface of the mounting hole, a recessed fitting section that opens toward the fluid tank chamber and is formed radially inside than the first outer peripheral surface, and a second inner peripheral surface that forms the recessed fitting section; a fluid supply valve which has a second outer peripheral surface, and which is inserted in the recessed fitting section of the fixing member and faces the second inner peripheral surface of the recessed fitting section; a first seal member that is provided between the first inner peripheral surface of the mounting hole and the first outer peripheral surface of the fixing member and is formed of a ring-shaped sealing material to seal a space between the first inner peripheral surface of the mounting hole and the first outer peripheral surface of the fixing member; and a second seal member that is provided between the second inner peripheral surface of the fixing member and the second outer peripheral surface of the fluid supply valve, seals a space between the second inner peripheral surface of the fixing member and the second outer peripheral surface of the fluid supply valve, and is formed of a ring-shaped sealing material with a diameter smaller than the first seal member, wherein the maximum inside diameter of the recessed fitting section is defined as D, a distance between a cross-sectional center of the first seal member and a cross-sectional center of the second seal member in a direction that a central axial line of the recessed fitting section extends is defined as L