US 12,031,963 B2
Connection assembly for chromatograph
Yohei Toji, Kyoto (JP)
Assigned to SHIMADZU CORPORATION, Kyoto (JP)
Filed by SHIMADZU CORPORATION, Kyoto (JP)
Filed on Nov. 19, 2021, as Appl. No. 17/530,737.
Claims priority of application No. 2020-196184 (JP), filed on Nov. 26, 2020.
Prior Publication US 2022/0163492 A1, May 26, 2022
Int. Cl. G01N 30/60 (2006.01); F16L 21/00 (2006.01)
CPC G01N 30/606 (2013.01) [F16L 21/00 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A connection assembly for a chromatograph, which is used for connection of a flow path of the chromatograph, comprising:
a tube that forms the flow path;
a housing that has an opening into which an end portion of the tube is insertable; and
a ferrule that is formed of resin having chemical resistance and holds the tube in the opening of the housing while surrounding the tube, wherein
the ferrule has an inner peripheral surface coming into contact with the tube and an outer peripheral surface coming into contact with the housing, and
a friction coefficient between the inner peripheral surface of the ferrule and the tube, and a friction coefficient between the outer peripheral surface and the housing are equal to or larger than 0.3.