| 摘要 |
PROBLEM TO BE SOLVED: To enhance positional precision for a welded portion between a vacuum envelope and a wiring terminal for constituting an X-ray image tube, facilitate automation for welding, and enhance workability. SOLUTION: This is composed of a flat part 21 contacting with an end edge of a vacuum envelope 11 for an X-ray image tube provided with connection part 12 joined to a wiring terminal 13, and a supporting part 24 integrally constituted together with the flat part 21, provided with a groove part 25 engaged with the wiring terminal 13, and for supporting an inner face of the envelope 11.
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