公开(公告)号：JPH11186079A

公开(公告)日：1999-07-09

申请号：JP35642697

申请日：1997-12-25

Applicant: DENSO CORP

Inventor： KAWAI KAZUHIDE ,  MATSUNAGA SHIGEMATSU

IPC: F02P15/00 ,  H01F38/12

Abstract: PROBLEM TO BE SOLVED: To prevent the lowering of insulation property due to cracks and peeling of thermosetting resin filled into a case of an ignition coil over a long period. SOLUTION: An opening part 26 for building a resin connector housing 25 is formed in one side surface of a resin case 21. A blocking board part 28 is formed integrally in a base end part of the connector housing 25, and a force-fit groove 29 formed in an outer circumferential part of the blocking board part 28 is force-fitted to an inner edge part of the opening part 26 of the case 21. Epoxy based thermosetting resin 30 is filled in the inside of the case 21. Since the inner surface side of the blocking board part 28 of the connector housing 25 is recessed, the blocking board part 28 is formed thin. Thereby, the rigidity of the case 21 is lowered by having the strength of the blocking board part 28 lowered, remaining stresses due to contraction deformation during setting of the thermosetting resin 30 is reduced, thus preventing the lowering of insulation property due to cracks and peeling of the thermosetting resin 30 over a long period.

公开(公告)号：JPH11114674A

公开(公告)日：1999-04-27

申请号：JP29346997

申请日：1997-10-08

Applicant: DENSO CORP

Inventor： URUSHIZAKI MAMORU ,  ICHIKAWA MASATO ,  OSHIMA MASAAKI ,  KAWAI KAZUHIDE

IPC: B23K11/00 ,  B23K11/16 ,  B23K11/24 ,  H01R4/02 ,  H01R43/02

Abstract: PROBLEM TO BE SOLVED: To provide a connecting method for the insulation covered electric wire and its connecting construction capable of reducing a size of a conductive member and obtaining a stable connection state excellent in durability and reliability. SOLUTION: A conductive member 2 is provided in a state where a base part 21 and a bent back part 23 facing a base part 2 are connected through curved R part 22, further, at least either one of the base part 21 or the bent back part 23 is provided with a protrusion part 25 protruding to an opposing face. An insulation covered electric wire 1 is sandwiched between the base part 1 and the bent back part 23, by pressing the base part 21 and the bent back part 23, an electricity conducting part 3 is formed by abutting the protrusion part 25 on the opposite face. Successively, by energizing to the conductive member 2 and causing an electric current to flow to the R part 22 and the electricity conducting part 3, both are made to generate heat.

公开(公告)号：JPH09133068A

公开(公告)日：1997-05-20

申请号：JP29452695

申请日：1995-11-13

Applicant: DENSO CORP

Inventor： KAWAI KAZUHIDE ,  SATO YOSHITAKA

IPC: F02P13/00 ,  F02P15/00

Abstract: PROBLEM TO BE SOLVED: To prevent a seal member from coming off. SOLUTION: An ignition device 10 for an internal combustion engine, partly received in a plug hole 3a of a plug tube 3, is constituted of a coil main unit upper part 10a, coil main unit lower part 10b, connection part 10c, fixing bracket 11, connector part 12, control circuit part and a packing 6. The packing 6 is mounted in a side of a head cover 2, formed annularly in a U-shaped section so as to interpose upper/lower surfaces of a flange part 2c of the head cover 2, and shape of the packing 6 is formed to be matched with a small/large diametric hole constituting a hole part of the head cover 2. In this way, moving to the outside of the head cover 2 of the packing 6 is impeded, so that coming-off of the packing 6 from the head cover 2 can be prevented when an ignition coil, comprising the coil main unit upper part 10a, coil main unit lower part 10b, or the like is mounted/demounted.

公开(公告)号：JP2012186411A

公开(公告)日：2012-09-27

申请号：JP2011049988

申请日：2011-03-08

Applicant: Denso Corp ,  Honda Motor Co Ltd ,  本田技研工業株式会社 ,  株式会社デンソー

Inventor： KAWAI KAZUHIDE ,  AKIMOTO KATSUNORI ,  MORIYA GAKUJI ,  KURAHASHI MAKOTO

IPC: H01F38/12 ,  F02P13/00 ,  F02P15/00

CPC classification number: F02P3/02 ,  H01F27/022 ,  H01F38/12

Abstract: PROBLEM TO BE SOLVED: To provide an ignition coil for an internal combustion engine, which can simplify a producing step, fix a cover to a case portion, and effectively prevent the intrusion of water into a plug hole.SOLUTION: On a side wall portion 31 on a case portion 3 of an ignition coil 1, a column portion 32 made by projecting a part of the side wall portion 31 outward, and a notch portion made by cutting off a part of the side wall portion 31 from an upper end are provided. On the column portion 32, a breathing port 321 which communicates with a breathing passage 21 formed between a seal rubber 5 and the case portion 3, and opens at an upper end portion is vertically formed. On the side wall portion 31 of the case portion 3, a cover 4 for surrounding the column portion 32 and covering the upper end portion of the breathing port 321 is provided, and the cover 4 is provided with a sealing portion 42 for sealing the notch portion. The ignition coil 1 makes filling resin 6 for filling a space S in the case portion 3 continuously contact with the sealing portion 42 and the side wall portion 31, thereby fixing the cover 4 to the side wall portion 31.

Abstract translation: 要解决的问题：为了提供一种用于内燃机的点火线圈，其可以简化制造步骤，将盖固定到壳体部分，并且有效地防止水侵入插塞孔中。 解决方案：在点火线圈1的壳体部分3上的侧壁部分31上，通过将侧壁部分31的一部分向外突出而制成的柱部分32，以及通过切断一部分 从上端设置侧壁部31。 在柱部32上形成有与形成在密封橡胶5和壳体部3之间并在上端部开口的呼吸用通路21连通的呼吸用端口321。 在壳体部3的侧壁部31上设置用于围绕柱部32并覆盖呼吸用端口321的上端部的盖4，盖4设置有密封部42， 一部分。 点火线圈1使用于填充壳体部分3中的空间S的填充树脂6与密封部分42和侧壁部分31连续接触，从而将盖子4固定到侧壁部分31上。 C）2012，JPO＆INPIT

公开(公告)号：JP2009170783A

公开(公告)日：2009-07-30

申请号：JP2008009388

申请日：2008-01-18

Applicant: Denso Corp ,  株式会社デンソー

Inventor： KAWAI KAZUHIDE

IPC: H01F38/12 ,  F02P15/00

Abstract: PROBLEM TO BE SOLVED: To provide an ignition coil which has a small diameter and high performance, and is superior in durable insulation and productivity, and to provide a manufacturing method thereof. SOLUTION: The ignition coil 1 is constituted by coupling a coil unit 11 composed of a primary coil 21, a secondary coil 22 and a center core 23 stored in a coil case 25 to a connector case unit 3 having a connector connection portion 31 for electric connection with an external apparatus. A gap in the coil case 25 and the connector case unit 3 are filled with a thermosetting resin 15. In the connector case unit 3, a partition wall 34 is provided which partitions off the connector case unit 3. The partition wall 34 extends across above an opening upper end portion 121 of an annular gap 12 formed between the primary coil 21 and the secondary coil 22. In the connector case unit 3, an injection-side filling space 301 and a discharge-side filling space 302 are formed which are partitioned by the partition wall 34. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供具有小直径和高性能，并且具有优异的耐久绝缘性和生产率的点火线圈，并提供其制造方法。 解决方案：点火线圈1通过将存储在线圈壳体25中的由初级线圈21，次级线圈22和中心芯23组成的线圈单元11耦合到具有连接器连接部分的连接器壳体单元3而构成 31用于与外部设备电连接。 线圈壳体25和连接器壳体单元3中的间隙填充有热固性树脂15.在连接器壳体单元3中，设置有分隔壁34，隔壁34分隔开连接器壳体单元3.隔壁34延伸穿过上面 形成在初级线圈21和次级线圈22之间的环形间隙12的开口上端部121.在连接器壳体单元3中，形成有分隔开的注入侧填充空间301和排出侧填充空间302 由分隔壁34组成。版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2009038219A

公开(公告)日：2009-02-19

申请号：JP2007201338

申请日：2007-08-01

Applicant: Denso Corp ,  株式会社デンソー

Inventor： KAWAI KAZUHIDE

IPC: H01F38/12

Abstract: PROBLEM TO BE SOLVED: To provide a manufacturing method of an ignition coil that can achieve both of compactness and high productivity. SOLUTION: In a winding stage, a self-fusion wire 60 is obliquely wound around a winding tool 30 which is cylindrical on the whole first to form a cylindrical spoolless secondary coil 16. In a deformation stage performed in parallel to a fusion stage wherein the self-fusion wire is fused, a centrifugal member 35 and a centripetal member 36 constituting the winding tool 30 are moved outward and inward along a radius of the winding tool to change the shape of the winding tool 30 from a cylindrical shape to a prismatic shape, thereby manufacturing a prismatic secondary coil 15 which is more compact than a conventional cylindrical secondary coil. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供能够实现紧凑性和高生产率的点火线圈的制造方法。 解决方案：在卷绕阶段，自熔丝60围绕卷绕工具30倾斜缠绕，该缠绕工具整体上首先是圆柱形的，以形成圆柱形的无卷轴次级线圈16.在平行于融合的变形阶段 其中自熔丝被熔化，构成卷绕工具30的离心件35和向心构件36沿着卷绕工具的半径向内和向内移动，以将卷绕工具30的形状从圆柱形改变为 棱柱形状，从而制造比常规圆柱形次级线圈更紧凑的棱柱形次级线圈15。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2007116062A

公开(公告)日：2007-05-10

申请号：JP2005308828

申请日：2005-10-24

Applicant: Denso Corp ,  株式会社デンソー

Inventor： AKIMOTO KATSUNORI ,  KAWAI KAZUHIDE

IPC: H01F38/12 ,  F02P15/00

CPC classification number: H01F38/12 ,  F02F1/242 ,  F02P3/02

Abstract: PROBLEM TO BE SOLVED: To provide an ignition coil in which the flow resistance of a rubber side communicating passage in a sealing rubber can be enlarged easily, and which can prevent effectively water from permeating into a plug hole. SOLUTION: The sealing rubber 5 is mounted on the perimeter of the body 2 of the ignition coil 1. A hoop direction passage 51 is formed between the sealing rubber 5 and a head 3. A hole side communicating passage 34 which communicates the hoop direction passage 51 within the plug hole 61 is formed between the sealing rubber 5 and the body 2. In the sealing rubber 5, a rubber side communicating passage 54 is formed which communicates with the hoop direction passage 51 and the exterior of the sealing rubber 5. The rubber side communicating passage 54 is made to lay a passage formation member 59 underground to the inside of the hole 55 for passage formation formed in the sealing rubber 5. In the passage formation member 59, a narrow communicating passage 591 has formed a passage cross section smaller than the passage cross section of the rubber side communicating passage 54. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供一种点火线圈，其中可以容易地扩大密封橡胶中的橡胶侧连通通道的流动阻力，并且可以有效地防止水渗透到塞孔中。 解决方案：密封橡胶5安装在点火线圈1的主体2的周边上。环形方向通道51形成在密封橡胶5和头部3之间。孔侧连通通道34， 在密封橡胶5和主体2之间形成有插头孔61内的环向通道51.在密封橡胶5中，形成橡胶侧连通通道54，其与环向通道51和密封橡胶的外部连通 橡胶侧连通通道54将通道形成构件59地下放置在形成在密封橡胶5中的通道形成孔55的内侧。在通道形成构件59中，形成窄通道591 通道横截面小于橡胶侧连通通道54的通道横截面。版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2007053308A

公开(公告)日：2007-03-01

申请号：JP2005238870

申请日：2005-08-19

Applicant: Denso Corp ,  株式会社デンソー

Inventor： KAWAI KAZUHIDE ,  TAKAHASHI SHOJI ,  IKEDO CHIHIRO

IPC: H01F38/12

Abstract: PROBLEM TO BE SOLVED: To provide an ignition coil wherein the occurrence of stress concentration on insulating resin can be effectively prevented, and the occurrence of cracks in the insulating resin can be prevented, and to provide a method of manufacturing the same. SOLUTION: The ignition coil has a center core 23 made of an electromagnetic steel sheet, a primary coil and a secondary coil formed by winding a primary electric cable and a secondary electric cable concentrically round the center core 23, and a coil case which inserts and arranges the primary coil and the secondary coil. In the ignition coil, an insulating sheet 4 for mitigating stress is wound on an outer peripheral surface of the center core 23, and a gap in the coil case is filled with the insulating resin. The insulating sheet 4 has an axially projection 43 in which at least one of ends in an axial direction L is projected from the axial end plane 232 of the center core 23. A corner 44 at an edge on an inner peripheral side and a corner 45 at an edge on an outer peripheral side in the axially projecting part 43 are formed in a curved shape which is not pointed and is smooth. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供一种能够有效地防止在绝缘树脂上产生应力集中的点火线圈，并且可以防止绝缘树脂中的裂纹的发生，并提供其制造方法。 解决方案：点火线圈具有由电磁钢板制成的中心芯23，初级线圈和通过将一次电缆和二次电缆同心地缠绕在中心芯23上而形成的次级线圈，线圈壳 其插入并布置初级线圈和次级线圈。 在点火线圈中，用于减轻应力的绝缘片4被缠绕在中心芯23的外周表面上，并且线圈壳中的间隙填充有绝缘树脂。 绝缘片4具有轴向突出部43，其中轴向方向L的端部中的至少一个从中心芯部23的轴向端面232突出。在内周侧的边缘处的角部44和角部45 在轴向突出部43的外周侧的边缘处形成为不尖且平滑的弯曲形状。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2006066881A

公开(公告)日：2006-03-09

申请号：JP2005152985

申请日：2005-05-25

Applicant: Denso Corp ,  株式会社デンソー

Inventor： TAKEYAMA SHOICHI ,  AOYAMA MASAHIKO ,  KAWAI KAZUHIDE

IPC: H01F38/12

CPC classification number: F02P3/02 ,  F02P13/00 ,  H01F27/022 ,  H01F27/04 ,  H01F38/12 ,  H01F2038/122

Abstract: PROBLEM TO BE SOLVED: To prevent cracks from occurring at an ambient insulating resin on the basis of an edge of an opening end of a high voltage terminal which is positioned between a lower end portion of a secondary spool and an upper end portion of a spring case and conducts one end of a secondary winding and a spring. SOLUTION: A stick ignition coil comprises: a secondary coil 13 which is positioned at a peripheral side of a center core 11 and is formed by winding a secondary winding 15 around a secondary spool 14; a primary coil 21 which is positioned at a peripheral side of the secondary coil 13; a coil case 26 which is positioned at a peripheral side of the primary coil 21; a high voltage terminal with an upwardly opened vessel profile, which is attached to a lower end portion of the secondary coil 13 and to which one end of the secondary winding 15 is connected; a spring case 35 which holds a spring 48 for conducting the high voltage terminal and an ignition plug; and insulating resin 72 filled in a space within the coil case 26. COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：为了防止在位于次级线轴的下端部的高压端子的开口端的边缘和上端部之间的环境绝缘树脂处发生裂纹 的一个弹簧箱，并且传导一个次级绕组和一个弹簧的一端。 解决方案：棒状点火线圈包括：次级线圈13，其位于中心芯11的周边，并且通过将次级绕组15缠绕在次级线圈14上而形成; 位于次级线圈13的周边的初级线圈21; 位于初级线圈21的周边的线圈套26; 具有向上打开的容器轮廓的高压端子，其连接到次级线圈13的下端部分，并且次级绕组15的一端连接到该高压端子; 弹簧壳体35，其保持用于导电高压端子的弹簧48和火花塞; 和绝缘树脂72填充在线圈箱26内的空间中。（C）版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2005347554A

公开(公告)日：2005-12-15

申请号：JP2004165958

申请日：2004-06-03

Applicant: Denso Corp ,  株式会社デンソー

Inventor： KATO HIDEYUKI ,  AOYAMA MASAHIKO ,  KAWAI KAZUHIDE ,  TAKEYAMA SHOICHI

IPC: F02P15/00 ,  H01F38/12

Abstract: PROBLEM TO BE SOLVED: To provide a stick type ignition coil wherein epoxy resin is efficiently impregnated to a gap between components of a coil, upward heat dissipation of generated heat in the coil is not hindered, and primary and secondary coils are surely positioned. SOLUTION: The ignition coil comprises: cylindrical cases 25, 31 whose upper parts are open; a center core 11 contained in a middle and a lower end 25 of the cases, the primary coil 17, the secondary coil 13, and a peripheral core 21. The minimum outer size of the upper part 31 of the cases is selected to be smaller than the maximum outer size of the middle and the lower end 25, and each of the cases is formed with a step 37 provided with a downward press contact face 37a extended inwardly in a radial direction toward the upper end. COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：为了提供一种棒状点火线圈，其中环氧树脂被有效地浸渍到线圈的部件之间的间隙中，线圈中产生的热的向上的热耗散不受阻碍，并且一次和二次线圈是可靠的 定位。

解决方案：点火线圈包括：上部打开的圆柱形壳体25,31; 壳体的中间和下端25中包含的中心芯11，初级线圈17，次级线圈13和外围芯21.壳体的上部31的最小外部尺寸被选择为更小 比中间和下端25的最大外径大，并且每个壳体形成有台阶37，台阶37设置有朝向上端沿径向向内延伸的向下的压接面37a。 版权所有（C）2006，JPO＆NCIPI