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31. 发明专利

JPH06325955A IGNITION DEVICE FOR INTERNAL COMBUSTION ENGINE, AND IGNITION DEVICE MOUNTING TYPE DISTRIBUTOR 失效
公开(公告)号：JPH06325955A
公开(公告)日：1994-11-25
申请号：JP11139293
申请日：1993-05-13
申请人： HITACHI LTD
发明人： YASUKURA YOICHI , WATANABE HIROSHI , SUGIURA NOBORU
IPC分类号： F02P7/00 , F02P15/00 , H01F38/12 , H01F31/00
摘要： PURPOSE:To obtain an ignition device and a distributor mounted therewith which are usable in a high-temperature condition and are excellent in a durability, by forming its partition type secondary coil bobbin out of a thermosetting synthetic resin. CONSTITUTION:A primary coil 2 is wound around a primary coil bobbin 1 formed out of a thermoplastic synthetic resin, and a secondary coil 4 is wound around a partition type secondary bobbin 3 formed out of such a thermosetting synthetic resin as an epoxy resin. The ends of the secondary coil 4 are connected respectively with high-voltage terminals 8 provided in the inner part of a high-voltage tower 7, and therefrom, the high voltage induced on the secondary side is distributed to the ignition plugs of respective cylinders. As the epoxy resin, especially, the one whose glass transition temperature is not lower than 135 deg.C and whose linear expansion coefficient is 35X10 / deg.C at a temperature not higher than its glass transition temperature is used. Also, the power of an inorganic substance not less than 50 weight percentage is mixed with the epoxy resin. Further, the partition type secondary coil bobbin 3 is formed by an injection molding.

32. 发明专利

JPH06251963A IGNITION COIL DEVICE 失效
公开(公告)号：JPH06251963A
公开(公告)日：1994-09-09
申请号：JP3353393
申请日：1993-02-23
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： YASUKURA YOICHI , OISHI HIDETOSHI , KONDO EIICHIRO
IPC分类号： H01F38/12 , H01F30/00 , H01F31/00
摘要： PURPOSE:To enable an ignition coil and an ignition plug to be surely and electrically connected together even if they are provided distant from each other. CONSTITUTION:An ignition coil 11 provided for an ignition plug 40, a spring 20 arranged between the top terminal 41 of the ignition plug 40 and the output terminal 12 of the ignition coil 11 so as to electrically connect them together, a boot 30 provided surrounding the spring 20 are provided. The spring 20 is provided with an enlarged diameter part 21 wherein the spring 20 is abruptly increased and then abruptly decreased in winding diameter in its longitudinal direction. The boot 30 is provided with an inner diameter-expanded part 33 wherein it is abrtuptly increased and then abruptly decreased in inner diameter conforming to the side face of the spring 20.

33. 发明专利

JP2008258291A Ignition coil for internal combustion engine, and manufacturing method thereof 有权
标题翻译：内燃机用点火线圈及其制造方法
公开(公告)号：JP2008258291A
公开(公告)日：2008-10-23
申请号：JP2007096991
申请日：2007-04-03
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KOBAYASHI TAKANOBU , YASUKURA YOICHI , OTAKA YASUNORI
IPC分类号： H01F38/12 , F02P15/00
摘要： PROBLEM TO BE SOLVED: To provide an ignition coil for an internal combustion engine being made to be difficult to occur a partial magnetic saturation in a main yoke section and being capable of increasing an output energy without enlarging the external shape of the ignition coil. SOLUTION: An air-gap is formed between one end of the main yoke section fitting the coil and one side of a connecting yoke section. The sectional area of a section near the air-gap is formed in a size larger than that on the far side from the air-gap in the main yoke section. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于内燃机的点火线圈，使得在主轭铁部分中难以发生部分磁饱和，并且能够在不扩大点火的外部形状的情况下增加输出能量线圈。解决方案：在配合线圈的主轭部的一端和连接轭部的一侧之间形成气隙。在气隙附近的部分的截面积形成为大于在主磁轭部分中与气隙远的一侧的尺寸。版权所有（C）2009，JPO＆INPIT

34. 发明专利

JP2007187104A Ignition coil device for internal combustion engine 审中-公开
标题翻译：用于内燃机的点火线圈装置
公开(公告)号：JP2007187104A
公开(公告)日：2007-07-26
申请号：JP2006006424
申请日：2006-01-13
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： OTAKA YASUNORI , KOBAYASHI TAKANOBU , YASUKURA YOICHI
IPC分类号： F02P13/00 , H01F38/12 , H01T13/44
摘要： PROBLEM TO BE SOLVED: To provide an ignition coil device for an internal combustion engine, having simple construction for reducing man-hours for assembly. SOLUTION: The ignition coil device comprises an ignition coil part, and an ignition plug to which high voltage is applied from the ignition coil part via a conduction part. The conduction part consists of, at least, a first spring on the side of the ignition coil part electrically connected thereto, a noise preventing resistance and a second spring on the side of the ignition plug, all of which are arranged in an insulating pipe. A connection member is laid between the noise preventing resistance and the second spring and fixed to the insulating pipe. The connection member has a first recessed part which is located at the end on the side of the noise preventing resistance and on which one electrode of the noise preventing resistance abuts to be pressed therein, and a second recessed part which is located at the end on the side of the second spring and in which one end of the second spring is stored. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于内燃机的点火线圈装置，具有简单的结构，用于减少组装工时。点火线圈装置包括点火线圈部分和从点火线圈部分经由导电部分施加高电压的火花塞。导电部至少包括与点火线圈部分电连接的一侧上的第一弹簧，防火电阻和位于火花塞一侧的第二弹簧，所有这些都布置在绝缘管中。连接构件放置在防噪电阻和第二弹簧之间并固定到绝缘管。连接构件具有位于防噪声侧的端部的第一凹部，防噪电阻的一个电极抵接在其上，第二凹部位于末端的第二凹部第二弹簧的一侧并且其中存储第二弹簧的一端。版权所有（C）2007，JPO＆INPIT

35. 发明专利

JP2004257248A IGNITION DEVICE FOR INTERNAL-COMBUSTION ENGINE 审中-公开
公开(公告)号：JP2004257248A
公开(公告)日：2004-09-16
申请号：JP2003045248
申请日：2003-02-24
申请人： HITACHI LTD
发明人： YASUKURA YOICHI
IPC分类号： F02P13/00 , F02B23/10 , F02M57/06 , F02M61/14
摘要： PROBLEM TO BE SOLVED: To solve the following problem: in a multi-position ignition system constituted by placing a plurality of spark plugs in a mixing chamber, when an in-cylinder injection type injector for conducting a stratified combustion is adopted to enhance fuel-economy, a plurality of spark plugs and one injector become necessary in the head part of a combustion chamber, where a sufficient space is hardly obtained. SOLUTION: An insulation member is formed around a nozzle tip of the injector for in-cylinder direct fuel-injection further protrusively into the combustion chamber than the nozzle tip. The plurality of ignition electrodes are placed arcuately on the surface of the insulation member or protrusively therefrom. Further, the plurality of ignition electrodes are constituted electrically in series with intervals of spark gaps. COPYRIGHT: (C)2004,JPO&NCIPI

36. 发明专利

JPH08186038A IGNITION COIL FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH08186038A
公开(公告)日：1996-07-16
申请号：JP32664394
申请日：1994-12-28
申请人： HITACHI LTD , HITACHI CAR ENGINEERING KK
发明人： YASUKURA YOICHI , SUGIURA NOBORU , KONDO EIICHIRO
IPC分类号： H01F27/32 , H01F27/33 , H01F30/00 , H01F38/12
摘要： PURPOSE: To contrive a reduction in a magnetic sound due to the magnetic vibrations of cores by a method wherein when the two cores are fixed on the inside of a primary bobbin, a conventional hard epoxy bonding agent for fixing the gap between the cores or the like and a flexible epoxy bonding agent for absorbing the magnetic vibrations in the lamination direction of the cores are used. CONSTITUTION: A primary coil 3 is wound on a primary bobbin 2 formed of a thermoplastic synthetic resin. The bobbin 2 is inserted in the inside of a secondary bobbin 4 and these bobbins are put in a case 6 subjected to injection molding with a thermoplastic synthetic resin. In order to absorb the magnetic vibrations of cores 7a and 7b, the cores 7a and 7b are first bonded and fixed to the bobbin 2 with a conventional hard epoxy bonding agent 8. After that, a flexible epoxy bonding agent 9 is injected in the cores 7a and 7b from the opposite sides to the surfaces, in which the bonding agent 8 is thrown, of the cores 7a and 7b. As the viscosity of the bonding agent 9 is low, the bonding agent 9 intrudes into the inside of the bobbin 2 and the gap between the cores 7a and 7b and an air layer is eliminated.

37. 发明专利

JPH0799128A IGNITION COIL DEVICE 失效
公开(公告)号：JPH0799128A
公开(公告)日：1995-04-11
申请号：JP24152893
申请日：1993-09-28
申请人： HITACHI LTD
发明人： YASUKURA YOICHI , SUGIURA NOBORU
IPC分类号： H01F38/12 , F02P13/00 , H01F30/00
摘要： PURPOSE:To readily mount to various engines by a method wherein a coiled spring is provided so that a boot inner terminal and a high pressure tower are electrically connected. CONSTITUTION:When a coil head 2 is coupled to a boot 3, a coil side spring 33 is received into a coil side spring receiving part 321 of a boot inner terminal 32. A length in the spring receiving part 321 is shorter than the coil side spring 33 in a condition that it is not elastically changed. Accordingly, in a condition that the boot 3 is coupled to the coil head 2, the coil side spring 33 is compression-changed within the spring receiving part 321. As a result, it is abutted against a bottom surface 3211 of a high pressure terminal 23 and the spring receiving part 321 to minimize (electric) contact resistance in a contact part. Thus, it is possible to readily mount to an engine in an ignition coil device.

38. 发明专利

JP2009266851A Ignition coil unit 审中-公开
标题翻译：点火线圈单元
公开(公告)号：JP2009266851A
公开(公告)日：2009-11-12
申请号：JP2008110856
申请日：2008-04-22
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KOBAYASHI TAKANOBU , YASUKURA YOICHI , KONDO EIICHIRO
IPC分类号： H01F38/12 , F02P15/00
摘要： PROBLEM TO BE SOLVED: To facilitate assembly of a closed magnetic path type ignition coil by using a plug top type ignition coil. SOLUTION: The ignition coil unit is provided with a side core enclosing a coil unit portion comprising a rod-shaped center core, formed by stacking steel plates made of magnetic materials, and a coil portion, has the center core disposed crossing the inside of the side core, has a pair of magnetic paths, passing through the side core with the center core as a common magnetic path, constituted to cross the coil portion, and has the side core constituted by a metal laminated steel plate made of a plurality of radially laminated magnetic materials having axial-direction slits. The ignition coil unit have intervals of slits wider than those in a natural state in a state wherein the side core is in contact with an outer periphery of a cylindrical coil unit case made of a resin material interposed between the coil unit and side core, the side core wraps an outer periphery of the coil unit case with its own elastic force. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：通过使用插头式点火线圈来方便组装封闭磁路式点火线圈。解决方案：点火线圈单元设置有侧芯，该侧芯包围线圈单元部分，该线圈单元部分包括通过堆叠由磁性材料制成的钢板形成的棒状中心芯和线圈部分，其中心芯设置为与在侧芯的内侧具有一对磁路，通过侧芯与中心芯作为公共磁路，构成为横过线圈部，并且具有由由金属层压钢板制成的侧芯多个具有轴向狭缝的径向层叠的磁性材料。点火线圈单元具有比在自然状态下更宽的狭缝间隔，其中侧芯与设置在线圈单元和侧芯之间的树脂材料制成的圆筒形线圈单元壳体的外周接触，侧芯以其自身的弹性力包裹线圈单元壳体的外周。版权所有（C）2010，JPO＆INPIT

39. 发明专利

JP2009111199A Ignition coil for internal combustion engine 审中-公开
标题翻译：内燃机用点火线圈
公开(公告)号：JP2009111199A
公开(公告)日：2009-05-21
申请号：JP2007282608
申请日：2007-10-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： OTAKA YASUNORI , YASUKURA YOICHI
IPC分类号： H01F38/12 , F02P13/00 , F02P15/00
摘要： PROBLEM TO BE SOLVED: To provide an ignition coil for internal combustion engine wherein an ignition coil side high pressure output terminal of a connection portion between a spring and the ignition coil side high voltage output terminal has high durability against deterioration in insulation due to corona discharge, since, in a plug top type ignition coil, an inner surface of a high voltage end portion (a side of disposing a spring) of a coil case is corona-deteriorated by the spring which electrically connects high voltage, thus deteriorating insulation reliability. SOLUTION: A cylindrical portion made of a material superior in corona deterioration durability than the high voltage tower, which covers the periphery of at least one of the ignition coil side high voltage output terminal and the connection portion between the spring and the ignition coil side high voltage output terminal, is provided. Thereby, insulation reliability of the high voltage connection portion of the plug top type ignition coil can be improved. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种用于内燃机的点火线圈，其中弹簧和点火线圈侧高压输出端子之间的连接部分的点火线圈侧高压输出端子具有高的绝缘劣化耐久性由于在插头式点火线圈中，线圈壳体的高压端部（配置弹簧的一侧）的内表面被电连接高压的弹簧电晕劣化，因此劣化绝缘可靠性。解决方案：一种圆柱形部分，其由电晕劣化耐久性优于高压塔的材料制成，其覆盖点火线圈侧高压输出端子和弹簧与点火之间的连接部分中的至少一个的周边线圈侧高压输出端子。由此，可以提高插头式点火线圈的高压连接部的绝缘可靠性。版权所有（C）2009，JPO＆INPIT

40. 发明专利

JPH08111327A IGNITION COIL FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH08111327A
公开(公告)日：1996-04-30
申请号：JP24364494
申请日：1994-10-07
申请人： HITACHI LTD
发明人： YASUKURA YOICHI , WATANABE HIROSHI , SUGIURA NOBORU
IPC分类号： H01F38/12 , H01F30/00
摘要： PURPOSE: To enhance reliability in the connection and endurance against heat shock while decreasing the number of components by employing such connector terminal for external electric connection as allowing connection of a plurality of types of wire. CONSTITUTION: Primary and secondary coils 7, 8 are soldered to connector terminals 3, 3a-3c. The connector terminal 3a-3c has a constricted part 31a for directly winding the lead wires 2a, 2b of the primary coil and a U-groove 31b extending in the axial direction of the connector terminal 3a, 3b for connecting even a phosphor bronze wire with the connector terminal 3c. This structure enhances reliability in the connection between the connector terminals 3a-3c and the primary and secondary coils 7, 8 and the endurance against heat shock of an ignition coil.

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