公开(公告)号：US06781500B2

公开(公告)日：2004-08-24

申请号：US10139639

申请日：2002-05-07

申请人： Kazuhide Kawai ,  Masafuyu Sano ,  Shigeya Abe ,  Masahiro Inagaki ,  Hajime Kasai ,  Hidetoshi Nakashima ,  Jyunichi Wada ,  Koji Tsunenaga ,  Kazutoyo Osuka ,  Masahiko Aoyama ,  Takashi Tauchi ,  Kaneo Buma ,  Yoshitaka Sato ,  Katsunori Akimoto

发明人： Kazuhide Kawai ,  Masafuyu Sano ,  Shigeya Abe ,  Masahiro Inagaki ,  Hajime Kasai ,  Hidetoshi Nakashima ,  Jyunichi Wada ,  Koji Tsunenaga ,  Kazutoyo Osuka ,  Masahiko Aoyama ,  Takashi Tauchi ,  Kaneo Buma ,  Yoshitaka Sato ,  Katsunori Akimoto

IPC分类号： H01F2730

CPC分类号： H01F38/12 ,  H01F2038/122

摘要： In a stick coil, there is disclosed an ignition coil for an internal combustion engine which can prevent a crack (a collar leak) from being generated due to a thermal stress. In this ignition coil, the structure is made such that a size (L) of a portion which is in parallel to an axial direction of a primary spool (121) in a projection portion (121b) is larger than a size (T) of a portion which is in parallel to an orthogonal direction to the axial direction of the primary spool (121). Accordingly, a frontal projected area of the projection portion (121b) as seen from a flowing direction of a resin becomes small, a resin flow is hard to get out of order at a time when the resin flows through a portion corresponding to the projection portion (121b) at the forming time, and a convoluted void and a weld are hard to be generated. Accordingly, since it is possible to prevent a mechanical strength in a root portion of the projection portion (121b) from being reduced, it is possible to previously prevent a crack from being generated in the root portion of the projection portion (the collar portion) (121b) due to a thermal stress so as to reduce an insulating property.

摘要翻译： 在棒状线圈中，公开了一种用于内燃机的点火线圈，其可以防止由于热应力而产生裂纹（轴环泄漏）。 在该点火线圈中，该结构被制成使得与突起部分（121b）中的初级线轴（121）的轴向方向平行的部分的尺寸（L）大于 与主卷轴（121）的轴向的正交方向平行的部分。 因此，从树脂的流动方向看，突出部分（121b）的正面投影面积变小，在树脂流过与突起部分相对应的部分时，树脂流动难以变得不顺利 （121b），并且难以产生卷积的空隙和焊缝。 因此，由于可以防止突起部（121b）的根部的机械强度降低，所以能够防止在突起部（轴环部）的根部产生裂纹， （121b）由于热应力而降低绝缘性能。

公开(公告)号：US06897755B2

公开(公告)日：2005-05-24

申请号：US10720170

申请日：2003-11-25

申请人： Jyunichi Wada ,  Koji Tsunenaga ,  Kazutoyo Osuka

发明人： Jyunichi Wada ,  Koji Tsunenaga ,  Kazutoyo Osuka

IPC分类号： H01F38/12 ,  H01F27/02

CPC分类号： H01F38/12 ,  H01F2038/122

摘要： In a stick coil, there is disclosed an ignition coil for an internal combustion engine which can prevent a crack (a collar leak) from being generated due to a thermal stress. In this ignition coil, the structure is made such that a size (L) of a portion which is in parallel to an axial direction of a primary spool (121) in a projection portion (121b) is larger than a size (T) of a portion which is in parallel to an orthogonal direction to the axial direction of the primary spool (121). Accordingly, a frontal projected area of the projection portion (121b) as seen from a flowing direction of a resin becomes small, a resin flow is hard to get out of order at a time when the resin flows through a portion corresponding to the projection portion (121b) at the forming time, and a convoluted void and a weld are hard to be generated. Accordingly, since it is possible to prevent a mechanical strength in a root portion of the projection portion (121b) from being reduced, it is possible to previously prevent a crack from being generated in the root portion of the projection portion (the collar portion) (121b) due to a thermal stress so as to reduce an insulating property.

摘要翻译： 在棒状线圈中，公开了一种用于内燃机的点火线圈，其可以防止由于热应力而产生裂纹（轴环泄漏）。 在该点火线圈中，该结构被制成使得与突起部分（121b）中的初级线轴（121）的轴向平行的部分的尺寸（L）大于尺寸（T） 与主卷轴（121）的轴向的正交方向平行的部分。 因此，从树脂的流动方向看，突出部分（121b）的正面投影面积变小，树脂流过对应于投影部分的部分时，树脂流动难以失序 部分（121b），并且难以产生回旋的空隙和焊缝。 因此，由于可以防止突起部（121b）的根部的机械强度减小，所以能够防止在突起部的根部产生裂纹（凸缘部 ）（121b）由于热应力而降低绝缘性能。

公开(公告)号：US06810868B2

公开(公告)日：2004-11-02

申请号：US10356544

申请日：2003-02-03

申请人： Koji Tsunenaga ,  Kazutoyo Osuka ,  Jyunichi Wada

发明人： Koji Tsunenaga ,  Kazutoyo Osuka ,  Jyunichi Wada

IPC分类号： F02P3055

CPC分类号： H01T13/44 ,  H01F27/022 ,  H01F38/12 ,  H01F2038/122

摘要： An ignition coil has an outer coil unit, an inner coil unit, a coil case in which the outer and inner coil units are housed and a tower case accommodating lower parts of outer and inner spools. The outer spool is made of resin material whose bonding strength to resin insulating material, with which the tower case is filled, is weak. An axial leading end of the outer spool is positioned axially away from a reference position by a distance equal to or shorter than 60% of a reference length or by a distance equal to or longer than 90% of the reference length. With this ignition coil, cracks are suppressed on the resin insulating material opposed to the axial leading end of the outer spool otherwise caused by thermal stress.

摘要翻译： 点火线圈具有外线圈单元，内线圈单元，容纳外线圈单元和内线圈单元的线圈壳体和容纳外线圈和内线圈的下部的塔架壳体。 外部卷轴由树脂材料制成，其与塔壳填充的树脂绝缘材料的结合强度较弱。 外卷轴的轴向前端远离基准位置轴向远离参考长度的60％或等于或大于参考长度的90％的距离。 利用该点火线圈，与由外部线轴的轴向前端相反的树脂绝缘材料，由于热应力引起的裂纹受到抑制。

公开(公告)号：US20050122196A1

公开(公告)日：2005-06-09

申请号：US11000266

申请日：2004-12-01

申请人： Norihito Fujiyama ,  Jyunichi Wada ,  Kazutoyo Osuka

发明人： Norihito Fujiyama ,  Jyunichi Wada ,  Kazutoyo Osuka

IPC分类号： F02P15/00 ,  H01F27/32 ,  H01F38/12 ,  H01F27/02

CPC分类号： H01F27/324 ,  H01F38/12

摘要： A small-diameter ignition coil includes a center core, a primary coil, a secondary coil, and a thin film tube. The primary and secondary coils are arranged on an outer circumferential side with respect to the center core. The thin film tube has a cylindrical shape. The thin film tube is arranged on an outer circumferential side with respect to one of the primary coil and the secondary coil that is arranged on an outer circumferential side with respect to the other of the primary coil and the secondary coil. The thin film tube is thermally resistive and electrically insulative. The thin film tube has wall thickness that is equal to or less than 0.35 mm. An electrically insulative resin is filled in a gap formed between the thin film tube and one of the primary coil and the secondary coil, which is radially adjacent to the thin film tube.

摘要翻译： 小直径点火线圈包括中心芯，初级线圈，次级线圈和薄膜管。 主和次级线圈相对于中心芯布置在外圆周侧。 薄膜管具有圆柱形状。 薄膜管相对于初级线圈和次级线圈中的另一方配置在外周侧的一次线圈和次级线圈的外周侧配置。 薄膜管是耐热和电绝缘的。 该薄膜管具有等于或小于0.35mm的壁厚。 电绝缘性树脂填充在薄膜管与初级线圈和次级线圈中的与薄膜管径向相邻的一个之间形成的间隙。

公开(公告)号：US07075401B2

公开(公告)日：2006-07-11

申请号：US11000266

申请日：2004-12-01

申请人： Norihito Fujiyama ,  Jyunichi Wada ,  Kazutoyo Osuka

发明人： Norihito Fujiyama ,  Jyunichi Wada ,  Kazutoyo Osuka

IPC分类号： H01F27/30

CPC分类号： H01F27/324 ,  H01F38/12

摘要： A small-diameter ignition coil includes a center core, a primary coil, a secondary coil, and a thin film tube. The primary and secondary coils are arranged on an outer circumferential side with respect to the center core. The thin film tube has a cylindrical shape. The thin film tube is arranged on an outer circumferential side with respect to one of the primary coil and the secondary coil that is arranged on an outer circumferential side with respect to the other of the primary coil and the secondary coil. The thin film tube is thermally resistive and electrically insulative. The thin film tube has wall thickness that is equal to or less than 0.35 mm. An electrically insulative resin is filled in a gap formed between the thin film tube and one of the primary coil and the secondary coil, which is radially adjacent to the thin film tube.

摘要翻译： 小直径点火线圈包括中心芯，初级线圈，次级线圈和薄膜管。 主和次级线圈相对于中心芯布置在外圆周侧。 薄膜管具有圆柱形状。 薄膜管相对于初级线圈和次级线圈中的另一方配置在外周侧的一次线圈和次级线圈的外周侧配置。 薄膜管是耐热和电绝缘的。 该薄膜管具有等于或小于0.35mm的壁厚。 电绝缘性树脂填充在薄膜管与初级线圈和次级线圈中的与薄膜管径向相邻的一个之间形成的间隙。

公开(公告)号：US6114935A

公开(公告)日：2000-09-05

申请号：US082528

申请日：1998-05-21

申请人： Kazutoyo Oosuka ,  Yoshihiro Shimoide ,  Kazuhide Kawai ,  Jyunichi Wada

发明人： Kazutoyo Oosuka ,  Yoshihiro Shimoide ,  Kazuhide Kawai ,  Jyunichi Wada

IPC分类号： H01F38/12 ,  H01F27/04

CPC分类号： H01F38/12

摘要： An ignition coil has a coil case made of an insulating resin, including a head portion, a cylinder portion accommodating a primary coil, and a secondary coil and a high-voltage tower portion for fitting with a spark plug. At least one of those three portions is separately molded and then the portions are assembled to form the coil case. The longitudinal length of each of the three portions is less than a forming flow length of the insulating resin, thereby preventing inferior molding. Further, the structure of each molding die is simpler than that of the coil case for an integral molding. Therefore, the coil case of the ignition coil can be molded readily without molding defects, even when the coil case is elongated, formed thinner, and/or formed with an undercut portion.

摘要翻译： 点火线圈具有由绝缘树脂制成的线圈壳体，包括头部，容纳初级线圈的圆筒部分和次级线圈以及用于与火花塞配合的高压塔架部分。 这三个部分中的至少一个被单独模制，然后这些部分被组装以形成线圈壳体。 三个部分中的每一个的纵向长度小于绝缘树脂的形成流动长度，从而防止劣化成型。 此外，每个成型模具的结构比用于整体成型的线圈箱的结构简单。 因此，即使当线圈壳体细长，形成较薄，和/或形成有底切部分时，也可以容易地模制点火线圈的线圈壳体而不造成模制缺陷。

公开(公告)号：US20050168313A1

公开(公告)日：2005-08-04

申请号：US11046708

申请日：2005-02-01

申请人： Jyunichi Wada

发明人： Jyunichi Wada

IPC分类号： H01F5/02 ,  H01F27/30 ,  H01F27/32 ,  H01F38/12 ,  H01F27/02

CPC分类号： H01F5/02 ,  H01F27/306 ,  H01F27/325 ,  H01F38/12 ,  H01F2038/122

摘要： A stick-shaped ignition coil includes a primary and secondary coils, a plurality of annular protrusions, a thin film sheet, a sub-assembly and a case. The annular protrusions are integrally formed on the outer circumferential periphery of the upper end portion of the primary coil arranged on the radially outer side. The thin film sheet covers the primary coil and the outer circumferential periphery of the plurality of annular protrusions. The sub-assembly is press-inserted to the outer circumferential periphery of the plurality of annular protrusions via the thin film sheet. The sub-assembly, which is electrically insulative, supports a lead portion of the primary winding. The case is press-inserted to the outer circumferential periphery of the cylindrical member.

摘要翻译： 棒状点火线圈包括一次和二次线圈，多个环形突起，薄膜片，子组件和壳体。 环形突起一体地形成在布置在径向外侧的初级线圈的上端部的外圆周上。 薄膜片覆盖多个环状突起部的初级线圈和外周周缘。 子组件通过薄膜片压入多个环形突起的外周周边。 电气绝缘的子组件支撑初级绕组的引线部分。 壳体被压入到圆柱形构件的外圆周上。

公开(公告)号：US20050110604A1

公开(公告)日：2005-05-26

申请号：US10987093

申请日：2004-11-15

申请人： Norihito Fujiyama ,  Jyunichi Wada

发明人： Norihito Fujiyama ,  Jyunichi Wada

IPC分类号： F02P15/00 ,  H01F3/14 ,  H01F29/14 ,  H01F38/12 ,  H01F27/02

CPC分类号： H01F38/12 ,  H01F3/14 ,  H01F29/146 ,  H01F2038/122 ,  H01F2038/127

摘要： An ignition coil is constructed of a center core, a primary coil, a secondary coil, and an outer circumferential core. The center core and the outer circumferential core are connected with each other via a first magnetoresistive member on one axial end side. The center core and the outer circumferential core are connected with each other via a second magnetoresistive member on the other axial end side. A permanent magnet is arranged in an axially central portion of the center core. A magnetic passage is formed of the center core, the permanent magnet, the first magnetoresistive member, the outer circumferential core, and the second magnetoresistive member. Magnetic flux generated by the primary coil is reduced through the first and second magnetoresistive members, and is reverse-biased by the permanent magnet.

摘要翻译： 点火线圈由中心芯，初级线圈，次级线圈和外周芯构成。 中心芯和外周芯通过第一磁阻构件在一个轴向端侧相互连接。 中心芯和外周芯通过另一轴向端侧上的第二磁阻构件相互连接。 永磁体布置在中心芯的轴向中心部分。 磁路由中心芯，永磁体，第一磁阻构件，外周芯和第二磁阻构件形成。 由初级线圈产生的磁通量通过第一和第二磁阻部件减小，并被永久磁铁反向偏置。

公开(公告)号：US06836203B2

公开(公告)日：2004-12-28

申请号：US10301588

申请日：2002-11-22

申请人： Jyunichi Wada

发明人： Jyunichi Wada

IPC分类号： H01F2730

CPC分类号： F02P3/02 ,  H01F38/12 ,  H01F2038/122

摘要： The ignition coil in this invention has a coil portion and a high voltage tower portion. The coil portion has a primary coil, a secondary coil, and a coil case. The high voltage tower portion has a high voltage spring which attaches to the terminal of the ignition plug under the coil in the central portion of the ignition coil. A feature of the ignition coil is that a secondary terminal composed of a connector portion connected with a secondary winding and an attaching portion directly attaches at the end of the high voltage spring under the coil portion. Since the secondary terminal functions as a terminal of the high voltage spring, the high voltage spring terminal, such as in the prior art, can be eliminated. An air outlet passage is also formed at the high voltage end of the secondary spool.

摘要翻译： 本发明的点火线圈具有线圈部和高压塔部。 线圈部分具有初级线圈，次级线圈和线圈壳体。 高压塔部分具有高压弹簧，其连接到点火线圈中心部分的线圈下方的火花塞的端子。 点火线圈的特征在于，由与次级绕组连接的连接器部分和附接部分构成的次级端子直接附接在线圈部分下方的高压弹簧的端部。 由于辅助端子用作高压弹簧的端子，因此可以消除诸如现有技术中的高压弹簧端子。 空气出口通道也形成在次级线轴的高压端。

公开(公告)号：US07392798B2

公开(公告)日：2008-07-01

申请号：US11699078

申请日：2007-01-29

申请人： Jyunichi Wada ,  Toru Yoshinaga

发明人： Jyunichi Wada ,  Toru Yoshinaga

IPC分类号： F02P3/02 ,  F02P1/00

CPC分类号： F02P15/08 ,  F02P3/051 ,  F02P5/1502 ,  F02P9/007 ,  Y02T10/46

摘要： An ignition system for an internal combustion engine includes an ignition coil, electric power supply circuit, a switching transistor, engine condition detecting element or unit that detects a signal relating to flow speed of air-fuel-mixture gas in the engine, and ignition control unit that controls the switching transistor to provide multiple ignition sparks in a predetermined ignition period. The ignition control unit controls the switching transistor to maintain each of the ignition sparks according to the signal relating to the flow speed of air-fuel-mixture gas in the engine to maintain sufficient spark energy for igniting the air-fuel mixture gas.

摘要翻译： 一种用于内燃机的点火系统包括点火线圈，电力供应电路，开关晶体管，发动机状态检测元件或检测与发动机中的空气 - 燃料混合气体的流速相关的信号的单元，以及点火控制 单元，其控制开关晶体管以在预定的点火周期内提供多个点火火花。 点火控制单元控制开关晶体管，以根据与发动机中空气 - 燃料混合气体的流速相关的信号来维持每个点火火花，以保持足够的火花能量来点燃空气 - 燃料混合气体。