Fluid port structure and sample supply device
AssigneeShimadzu Corporation
InventorShinji Tanaka
Life of this patent
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Abstract
A fluid port structure includes a tube and a cylindrical portion and receives injection of a fluid. The tube has sealability. A flow path through which the fluid flows is formed in the tube. In the cylindrical portion, a through hole that extends in an axial direction in which the fluid flows is formed. An upstream end portion of the tube is inserted into the through hole. An inner peripheral surface of the cylindrical portion has a tapered surface, and the more upstream a position on the tapered surface than a predetermined position in the axial direction, the larger a diameter of the portion of the through hole. The tube has a widening portion that widens along the tapered surface of the cylindrical portion in the upstream end portion.
Claims5
A fluid port structure that receives injection of a fluid, comprising:
- a tube having sealability and having a flow path through which the fluid passes;
- a cylindrical portion having a through hole, which extends in an axial direction in which the fluid flows and through which an upstream end portion of the tube is inserted
- a casing portion that accommodates the cylindrical portion while drawing a downstream end portion of the tube outwardly;
- and
- a cap that is attached to the casing portion,
- wherein an inner peripheral surface of the cylindrical portion has a tapered surface, and the more upstream a position on the tapered surface than a predetermined position in the axial direction, the larger a diameter of the through hole,
- the tube has a widening portion that widens along the tapered surface of the cylindrical portion in the upstream end portion, and
- the cap fixes the tube and the cylindrical portion while exposing an inner peripheral surface of the upstream end portion of the tube by directly pressing the widening portion of the tube.
Dependencies are inferred from the claim text.