Title:
WELDING TRANSFORMER
Document Type and Number:
WIPO Patent Application WO/2021/246152
Kind Code:
A1
Abstract:
This welding transformer is provided with: a primary-side coil in which a plurality of primary-side unit coils (11) have been stacked; a secondary-side coil in which a plurality of secondary-side unit coils have been stacked; and a magnetic core. The primary-side/secondary-side unit coils (11) each have: a main body (12) having a plurality of corner sections (13); and a first terminal section (14) and a second terminal section (15) that extend with an interval therebetween from two ends of the main body (12). A recess (13a) toward the outer peripheral side is provided to an inner peripheral surface of each of the plurality of corner sections (13). The primary-side unit coils (11) and the secondary-side unit coils are stacked alternately in a state of having been insulated from one another.
Inventors:
OYAMA HIDETOSHI
Application Number:
PCT/JP2021/018712
Publication Date:
December 09, 2021
Filing Date:
May 18, 2021
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H01F30/10; H01F27/28
Foreign References:
| JP2002237419A | 2002-08-23 | |||
| JP2002175922A | 2002-06-21 | |||
| JP2011082478A | 2011-04-21 |
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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