Opening sealing structure, sample vaporization unit, and gas chromatograph
A technology for sealing structures and sealing caps, which can be used in instruments, scientific instruments, measuring devices, etc., and can solve problems such as O-ring damage and O-ring deformation.
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[0044] In the opening sealing structure and the sample vaporization unit of the present invention, the stepped portion has two or more sections where the inclination angles of the side surfaces are different from each other, and the inclination angle of each section is preferably the following angle: In each section, the maximum value of the force acting on the cap body holder in the rotation direction of the cap body holder is approximately the same. In this way, the operating force when rotating the cap body fixing member can be made more uniform, so that the user can obtain a better operating feeling when the sealing cap is installed and removed.
[0045] You may provide a locking part which engages with the protrusion part and stops the protrusion part in the position closest to the base end part in the side surface of a step part. In this way, it is possible to suppress the retreat of the pin while the sealing cap is fixed, and prevent the sealing cap from loosening naturall...
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