| 摘要 |
PURPOSE:To improve the insulating withstand strength of a high voltage side bobbin by winding an insulating member having many gaps on the outer periphery of a high voltage winding up to the height of a collar of the bobbin. CONSTITUTION:An air permeable member 13 having many gaps therein such as nylon yarn, Tetoron yarn, cotton yarn, twisted yarn or cloth of glass fiber is wound on the outer periphery of a high voltage winding 7 at least up to the height of a collar 5 of a high voltage side bobbin 6. When a strain tend to occur at a resin filler 9, the member 13 absorbs the strain produced due to the gaps therein. Accordingly, it can prevent from cracking, thereby improving the insulating withstand strength of the bobbin 6. |
