Patent ID: 7581764
Filing Date: 2009-09-01
Classification: F16J,F16K,F16L

Abstract:
1. A connection seal structure for a fluidic device to be used for handling a chemical liquid, the seal structure including a first component made of resin and a second component made of resin, which are connected with each other, the connection seal structure comprising: an annular seal component made of resin interposed between a connecting portion of the first component and a connecting portion of the second component, the seal component having end faces formed with a first circumferential groove and a second circumferential groove, each of the first and second circumferential grooves having an upper portion and a lower portion that has opposing sides parallel to each other, a width of each upper portion being wider than a width of each lower portion, each groove including a press-fit allowance in a wall-thickness direction; and a first circumferential protrusion formed in the connecting portion of the first component and a second circumferential protrusion formed in the connecting portion of the second component; wherein when the connecting portion of the first component and the connecting portion of the second component are moved relatively in only an axial direction, the first circumferential protrusion is engaged in the press-fit allowance of the first circumferential groove and the second circumferential protrusion is engaged in the press-fit allowance of the second circumferential groove, such that the first component and the second component are press-fit with the seal component.