COIL BOBBIN, AND TRANSFORMER

• Main Authors: TANAKA TSUYOSHI, MATSUBA KENICHI
• Format: Patent
• Language: English; Japanese
• Published: 24.05.2018
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; INDUCTANCES; MAGNETS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS

PROBLEM TO BE SOLVED: To solve such a problem that a coil bobbin capable of cooling a high voltage side coil appropriately cannot be provided.SOLUTION: A coil bobbin includes a first frame 101 provided with a first groove 1011, in which a coil is placed, along the outer periphery, and having a first core region 1012, a second frame 201 provided with a second groove 2011, in which a coil is placed, along the outer periphery, and being fitted in the first frame 101 having a second core region 2012 at a position adjacent to each first core region, and a cylindrical member 301 arranged to enclose the adjoining first and second core regions 1012, 2012 while fitting the second frame 201 in the first frame 101. The second frame 201 has a shape of forming a gap 50 communicating with the opening 3015 of the cylindrical member 301 between the cylindrical member 301 in the second core region 2012, and includes a cooling hole 2019 interconnecting the gap 50 and the second groove 2011 in the second core region 2012. With such an arrangement, the high voltage side coil can be cooled appropriately with insulation oil through the cooling hole.SELECTED DRAWING: Figure 1 【課題】高圧側コイルを適切に冷却可能なコイルボビン等を提供できなかった。【解決手段】コイルが配置される第一の溝１０１１が外周に沿って設けられ、第一鉄心領域１０１２を有する第一の枠体１０１と、コイルが配置される第二の溝２０１１が外周に沿って設けられ、各第一鉄心領域に隣接する位置に第二鉄心領域２０１２を有する第一の枠体１０１の内側にはめ込まれる第二の枠体２０１と、第二の枠体２０１を第一の枠体１０１にはめ込んだ状態で隣接する第一鉄心領域１０１２と第二鉄心領域２０１２を包むよう配置される円筒部材３０１と、を備え、第二の枠体２０１は、第二鉄心領域２０１２に、円筒部材３０１との間に円筒部材３０１の開口部３０１５に連通する間隙５０が生じる形状を有し、第二鉄心領域２０１２に間隙５０と第二の溝２０１１を連通する冷却孔２０１９を備えた。これにより、冷却孔を通じて絶縁油で高圧側のコイルを適切に冷却できる。【選択図】図１