Patent ID: 7293549
Filing Date: 2007-11-13
Classification: F16L,Y10T

Abstract:
1. A tubular body sealing mechanism which seals, with a ring seal member that fits onto a shaft part of an attaching member, a space between an opening of the tubular body which has a reduced diameter region at a suitable distance from the opening and the attaching member which is inserted into the opening, wherein a bushing is fit onto the leading end of the shaft part to be moveable in the axial direction; the ring seal member is fit to be moveable between a base part thereof and the bushing; a small diameter region is formed on the end of the shaft part on the bushing side in the ring seal member moveable region, a large diameter region is formed on the end of the shaft part on the base part side; and when the shaft part of the attaching member is inserted into the tubular body from the opening end of the tubular body, the bushing contacts the reduced diameter region of the tubular body, the bushing moves toward the base part of the shaft, and the ring seal member is moved by the bushing from the small diameter region to the large diameter region, such that the ring seal member deforms and expands toward the inner peripheral face of the opening and the ring seal member forms a press fit to the inner peripheral face of the tubular body to create a hermetic seal.