Title:
VACUUM INTERRUPTER AND VACUUM BREAKER
Document Type and Number:
WIPO Patent Application WO/2021/256387
Kind Code:
A1
Abstract:
In a vacuum container (1) of a vacuum interrupter (1A), an insulative cylindrical body (10) is sealed with a fixed-side flange (11a) on the fixed side in the axial direction, and is sealed with a movable-side flange (11b) on the movable side in the axial direction. In the fixed-side flange (11a) and the movable-side flange (11b), annular expansion portions (5a, 5b) are formed between central portions (3a, 3b) and outer circumferential edge portions (4a, 4b), respectively. The annular expansion portions (5a, 5b) are respectively formed into the annular shapes extending along the outer circumferences of the central portions (3a, 3b), and into the shapes expanding outward in the axial direction of the vacuum container (1), so that an arch structural effect can be obtained.
Inventors:
KARASAWA YASUO (JP)
Application Number:
PCT/JP2021/022225
Publication Date:
December 23, 2021
Filing Date:
June 04, 2021
Export Citation:
Assignee:
MEIDENSHA ELECTRIC MFG CO LTD (JP)
International Classes:
H01H33/66; H01H33/662; H02B13/035
Foreign References:
| JPS49131567U | 1974-11-12 | |||
| JPH0282418A | 1990-03-23 | |||
| JPS5266960A | 1977-06-02 | |||
| JP2004259633A | 2004-09-16 | |||
| JP2016126952A | 2016-07-11 | |||
| JP2004259633A | 2004-09-16 | |||
| JP5255416B2 | 2013-08-07 |
Other References:
See also references of EP 4152356A4
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
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