X-ray tube device and x-ray CT apparatus
AssigneeHitachi, Ltd.
InventorYoshitaka Seki
Life of this patent
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Abstract
There is provided an X-ray tube device having a configuration for preventing peeled-off solid lubrication films from scattering in an X-ray tube even when the solid lubrication film peels off a rotary bearing. The X-ray tube device includes: an anode (212) that is irradiated with an electron beam, thereby emitting X-rays; a rotary bearing (304) that rotatably supports the anode (212); a solid lubrication film which is formed on a front surface of the rotary bearing (304) and into which a ferromagnet is mixed from the rotary bearing (304); and an attractor (303) which attracts, with a magnetic force, the solid lubrication film that peels off the rotary bearing (304).
Claims11
An X-ray tube device comprising:
- an anode that is irradiated with an electron beam, thereby emitting X-rays;
- a rotary bearing that rotatably supports the anode;
- a solid lubrication film which is formed on a front surface of the rotary bearing so as to be mixed with a ferromagnet;
- and
- an attractor that attracts, with a magnetic force, the solid lubrication film that peels off the rotary bearing;
- wherein the attractor contains a permanent magnet and the permanent magnet is disposed at a position having a temperature that does not exceed the Curie temperature of the permanent magnet;
- and
- wherein the attractor contains a ferromagnet that is disposed to be in contact with the permanent magnet.
Dependencies are inferred from the claim text.