Title:
SLIDING BEARING UNIT AND ROTARY ANODE TYPE X-RAY TUBE
Document Type and Number:
WIPO Patent Application WO/2023/127184
Kind Code:
A1
Abstract:
Provided are: a sliding bearing unit with which a favorable bearing operation can be obtained for a long period of time; and a rotary anode type X-ray tube provided with this sliding bearing unit. This sliding bearing unit is provided with a fixed shaft, a rotary body, and a lubricant. The fixed shaft has a small diameter portion and a large diameter portion including a first radial bearing surface. The rotary body has a rotary body main body including a second radial bearing surface and a seal member. The seal member includes a second outer peripheral surface, a second inner peripheral surface, a trap recess surface that opens in the second inner peripheral surface, is recessed toward the second outer peripheral surface, and can trap the lubricant, and a through-hole. The through-hole has a first opening and a second opening and interconnects the space surrounded by the trap recess surface and a first gap between the first radial bearing surface and the second radial bearing surface.
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Inventors:
IDE HIDEKI (JP)
Application Number:
PCT/JP2022/026730
Publication Date:
July 06, 2023
Filing Date:
July 05, 2022
Export Citation:
Assignee:
CANON ELECTRON TUBES & DEVICES CO LTD (JP)
International Classes:
F16C17/02; F16C17/04; F16C33/74; H01J35/10
Foreign References:
| US11017977B1 | 2021-05-25 | |||
| JPH0513029A | 1993-01-22 | |||
| JP2021157874A | 2021-10-07 | |||
| JP2005108511A | 2005-04-21 |
Attorney, Agent or Firm:
S & S INTERNATIONAL PPC (JP)
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