X-ray tube device and x-ray CT apparatus
First Claim
Patent Images
1. 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.
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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).
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Citations
11 Claims
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1. An X-ray tube device comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification