Title:
SHEET TRANSFORMER FOR DC/DC CONVERTER
Document Type and Number:
WIPO Patent Application WO/2010/026690
Kind Code:
A1
Abstract:
Disclosed is a sheet transformer provided with: a first core (6) comprising feet (9a), (9b) and (9c) that pass through a coil of a circuit board (2) and having a gap-forming section (9f) at the middle of the foot (9a); and a second plate-shaped core (7) arranged at the tip of the first core (6). The sheet transformer is also provided with a fixing member (11) in which the first core (6) and second core (7) are assembled as a unit, an air gap (G) is formed between the middle foot (9a) and the second core (7), and the first core (6) and second core (7) are fixed with respect to a coil. The fixing member (11) comprises: holders (13a, 13b) provided with claws (14a, 14b) that embrace the outside feet of the first core (6) from the second core (7); first springs (15a, 15b) that apply pressure at a position on the second core facing the outside feet (9b, 9c) of the first core; and second springs (16a, 16b) extending from the side of the second core to the circuit board, causing the inside flat part of the feet of the first core to make contact with the coil.
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Inventors:
OTSUKA, Yasunori (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
大塚保紀 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
OSAWA, Takashi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
大塚保紀 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
OSAWA, Takashi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2009/003074
Publication Date:
March 11, 2010
Filing Date:
July 02, 2009
Export Citation:
Assignee:
Mitsubishi Electric Corporation (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
三菱電機株式会社 (〒10 東京都千代田区丸の内二丁目７番３号 Tokyo, 〒1008310, JP)
OTSUKA, Yasunori (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
大塚保紀 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
三菱電機株式会社 (〒10 東京都千代田区丸の内二丁目７番３号 Tokyo, 〒1008310, JP)
OTSUKA, Yasunori (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
大塚保紀 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
International Classes:
H01F27/06; H01F27/24
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (Akasaka Sanno Center Bldg. 5F, 12-4 Nagata-cho 2-chome, Chiyoda-k, Tokyo 14, 〒1000014, JP)
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