Sealing structure for liquid passage connection part

Patent metadata

Field	Value
Publication number	US-9103810-B2
Application number	US-201013698264-A
Country	US
Kind code	B2
Filing date	May 17, 2010
Priority date	May 17, 2010
Publication date	Aug 11, 2015
Grant date	Aug 11, 2015

Abstract

When a sealing member held in a cavity of a housing is pressed by a cap toward the bottom of the cavity, the side surface of the sealing member is inclined to laterally expand. As a result, in the opening-side portion of the sealing member, the side surface is strongly pressed on the wall surface of the cavity, causing a strong friction force at the contact surface, which prevents the pressing force applied from the opening side from being transmitted to the bottom side. Therefore, at the beginning of the pressing operation, the internal stress of the sealing member is higher in the opening-side portion than in the bottom-side portion. With the lapse of time from the beginning of the pressing operation, the opening-side portion of the sealing member under the higher internal stress gradually moves toward the bottom side against the friction force.

First claim

The invention claimed is:

1. A sealing structure, including:
a) a sealing member having a through-hole for allowing a passage of a sample;
b) a housing having a cavity for holding the sealing member, the cavity having a sample introduction hole at a bottom thereof, the sample introduction hole communicating with the through-hole; and
c) a pressure device for pressing the entire sealing member from an opening of the cavity toward the bottom of the cavity,
wherein the cavity i…

Assignees

• Maeda Yoshiaki
• Shimadzu Corp

Inventors

• Maeda Yoshiaki

Classifications

• G01N2030/185

  Physics · mapped topic

• G01N30/24

  Physics · mapped topic

• G01N35/1079

  Physics · mapped topic

• G01N30/18 Primary

  Physics · mapped topic