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    IGNITION COIL UNIT FOR ENGINE AND ENGINE PROVIDED WITH PLASTIC HEAD COVER
    2.
    发明公开
    IGNITION COIL UNIT FOR ENGINE AND ENGINE PROVIDED WITH PLASTIC HEAD COVER 失效
    ÜK K K K K K K K K K K K K K K K K K K K K K K K K K K K K

    公开(公告)号：EP0984463A1

    公开(公告)日：2000-03-08

    申请号：EP98921759.1

    申请日：1998-05-22

    申请人： Hitachi, Ltd. ,  Hitachi Car Engineering Co., Ltd.

    发明人： SHIMADA, Junichi Automotive Products Division, ,  SUGIURA, Noboru Automotive Products Division, ,  ANZO, Yoichi Automotive Products Division, ,  KONDO, Eiichiro ,  KOBAYASHI, Kazutoshi Automotive Products Division, ,  KOSAI, Takahide ,  UEDA, Toshiaki Automotive Products Division,

    IPC分类号： H01F38/12 ,  F02P15/00

    CPC分类号： H01T13/44 ,  F02D2400/18 ,  F02P3/02 ,  F02P3/0435 ,  F02P11/00 ,  F02P13/00 ,  H01F27/022 ,  H01F27/29 ,  H01F27/325 ,  H01F27/327 ,  H01F27/40 ,  H01F38/12 ,  H01F41/064 ,  H01F2005/025 ,  H01F2038/122 ,  H01F2038/125 ,  H01F2038/127

    摘要： To improve an anti-heat shock performance and an electric field concentration relaxation (an insulation performance) between a secondary coil and a center core, to attain a narrow diameter structure in an individual ignition type ignition coil and further to improve an assembling working of the ignition coil. The individual ignition type ignition coil is adopted to an engine having a plastic head cover. A secondary coil 3 is positioned at an inner side of a primary coil 5 and between a secondary bobbin 2 and a center core 1 a soft epoxy resin 17 is filled up. In the secondary bobbin 2, a secondary coil low voltage side is a potting side of the soft epoxy resin 17 and an inclination having a difference in an inner diameter is provided on the inner diameter in which the secondary coil low voltage side is formed large and secondary coil high voltage side is formed small. In the secondary bobbin, a thickness in the secondary coil low voltage side is formed thin and a thickness in the secondary coil high voltage side is formed thick. The soft epoxy resin 17 has a dent 17' according to a compression molding and has a glass transition point Tg which satisfies a condition of [an allowable stress of the secondary bobbin > a generation stress at (from -40°C to a glass transition point of an insulation resin)]. The secondary bobbin is formed by PPS and the primary bobbin is set to the primary coil at outer side of the secondary assembling body and under an assembling condition the winding is carried out.

    摘要翻译： 为了提高次级线圈和中心芯之间的抗热冲击性能和电场集中松弛（绝缘性能），在单个点火式点火线圈中获得窄直径结构，并且进一步改善了组装工作 点火线圈。 单个点火式点火线圈用于具有塑料头盖的发动机。 次级线圈3位于初级线圈5的内侧，在次级线轴2和中心芯1之间，填充有软质环氧树脂17。 在次级绕线筒2中，次级线圈低压侧是软环氧树脂17的封装侧，并且在形成次级线圈低压侧的内径上形成具有内径差的倾斜， 次级线圈高压侧形成较小。 在次级绕线管中，次级线圈低压侧的厚度形成得较薄，并且二次线圈高压侧的厚度形成得较厚。 软环氧树脂17根据压缩成型具有凹部17'，并且具有满足副线轴的容许应力的条件的玻璃化转变点Tg（从-40℃至玻璃化转变点 的绝缘树脂）Ü。 次级绕线筒由PPS形成，主绕组被设置在次级组装体的外侧的初级线圈，并且在组装条件下进行绕组。