公开(公告)号：JP2009167978A

公开(公告)日：2009-07-30

申请号：JP2008009389

申请日：2008-01-18

Applicant: Denso Corp ,  株式会社デンソー

Inventor： KAWAI KAZUHIDE

IPC: F02P13/00 ,  H01F38/12

Abstract: PROBLEM TO BE SOLVED: To provide an ignition coil surely preventing a plug installation part to a spark plug from coming off. SOLUTION: A high voltage terminal 4 of the plug installation part of the ignition coil includes a cylindrical insertion part 41 for inserting a conductive male screw terminal 61 formed at a tip side of an insulator 62 of the spark plug 6. A clip spring 5 for preventing the male screw terminal 61 inserted in the insertion part 41 from coming off is provided at an outer circumference of the insertion part 41. The clip spring 5 includes a retaining part 51 retaining the clip spring at the outer circumference of the insertion part 41, and a fitting part 52 extended from the retaining part 51 and fitted in a screw valley 611 of the male screw terminal 61 via a notch hole 411 formed at an outer circumference of the insertion part 41. The fitting part 52 has an acute edge 521 fitting in a V-shaped groove at the screw valley 611 of the male screw terminal 61 in a section shape thereof. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供可靠地防止火花塞的插头安装部件脱落的点火线圈。 解决方案：点火线圈的插头安装部分的高压端子4包括用于插入形成在火花塞6的绝缘体62的尖端侧的导电外螺纹端子61的圆柱形插入部41。 弹簧5用于防止插入插入部41中插入的​​外螺纹端子61脱落。弹簧5设置在插入部41的外周。夹子弹簧5包括：保持部51，其将夹子弹簧保持在插入件的外周 部分41以及从保持部51延伸并经由形成在插入部41的外周的切口孔411嵌合在外螺纹端子61的螺纹槽611中的嵌合部52.嵌合部52具有锐角 边缘521以其截面形状装配在外螺纹端子61的螺纹谷611处的V形槽中。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2007109867A

公开(公告)日：2007-04-26

申请号：JP2005298942

申请日：2005-10-13

Applicant: Denso Corp ,  株式会社デンソー

Inventor： AKIMOTO KATSUNORI ,  KAWAI KAZUHIDE

IPC: H01F38/12 ,  F02P15/00 ,  H01T13/08

Abstract: PROBLEM TO BE SOLVED: To provide an ignition coil capable of effectively preventing water from soaking into a plug hole. SOLUTION: A seal rubber 5 disposed between a head 3 and an upper end 62 of an opening of a plug hole 61 is attached to an outer periphery of a cylinder 2 of an ignition coil 1. A circumferential passage 51 is formed between the seal rubber 5 and the head 3, and a hole side interconnecting path 34 for interconnecting the circumferential passage 51 into the plug hole 61 is formed between the seal rubber 5 and the cylinder 2. The seal rubber 5 is formed with a fluid inflow chamber 53 formed with an opening 531 and a first rubber side interconnecting path 54 for interconnecting the fluid inflow chamber 53 with the circumferential passage 51. A second rubber side interconnecting path 55 for interconnecting the fluid inflow chamber 53 with an outside of the seal rubber 5 is formed in an inflow chamber forming wall 532A. The volume of the fluid inflow chamber 53 is greater than any of the volume of the first rubber side interconnecting path 54 and a volume of the second rubber side interconnecting path 55. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供能够有效地防止水浸泡到塞孔中的点火线圈。 解决方案：设置在插头孔61的开口的头部3和上端62之间的密封橡胶5安装在点火线圈1的圆筒2的外周上。周向通道51形成在 在密封橡胶5和气缸2之间形成密封橡胶5和头部3以及用于将周向通路51与塞孔61相互连接的孔侧互连路径34.密封橡胶5形成有流体流入室 53形成有开口531和用于将流体流入室53与周向通道51互连的第一橡胶侧互连路径54.用于将流体流入室53与密封橡胶5的外部相互连接的第二橡胶侧互连路径55是 形成在流入室形成壁532A中。 流体流入室53的体积大于第一橡胶侧互连路径54的体积和第二橡胶侧互连路径55的体积中的任何一个。（C）2007，JPO＆INPIT

公开(公告)号：JP2006049820A

公开(公告)日：2006-02-16

申请号：JP2005138803

申请日：2005-05-11

Applicant: Denso Corp ,  株式会社デンソー

Inventor： KAWAI KAZUHIDE ,  AOYAMA MASAHIKO ,  TAKEYAMA SHOICHI

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

Abstract: PROBLEM TO BE SOLVED: To solve the problem that a primary coil on an outer peripheral side with which epoxy resin is filled restrains deformation of a secondary coil on an inner peripheral side and that a crack occurs in a secondary spool at the time of a cold cycle and the problem that an air layer occurs between a primary spool and primary wiring unless the primary coil is filled with epoxy resin and that corona discharge possibly occurs. SOLUTION: A stick type ignition coil is provided with a center core 10, a secondary coil 15 on the outer peripheral side of the core and a primary coil 20 on the outer peripheral side of the coil. The primary coil includes the primary spool 21 having insulation and a cylindrical shape, an insulating soft material 35 installed on a base 22d of a circular hollow 22c formed on an outer peripheral face and primary winding 24 wound onto the material. COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题为了解决环氧树脂被填充的外周侧的初级线圈在内周侧发生次级线圈的变形并且在次级线圈中发生裂纹的问题 的冷循环以及在初级线轴和初级线路之间发生空气层的问题，除非初级线圈填充有环氧树脂并且可能发生电晕放电。 解决方案：棒式点火线圈设置有中心芯10，在芯的外周侧的次级线圈15和线圈的外周侧上的初级线圈20。 初级线圈包括具有绝缘体和圆柱形形状的初级线轴21，绝缘软材料35，其安装在形成在外周面上的圆形中空部22c的基部22d上，以及缠绕在材料上的初级绕组24。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2005354033A

公开(公告)日：2005-12-22

申请号：JP2005065458

申请日：2005-03-09

Applicant: Denso Corp ,  株式会社デンソー

Inventor： KAWAI KAZUHIDE ,  AOYAMA MASAHIKO ,  TAKEYAMA SHOICHI

IPC: F02P15/00 ,  H01F27/02 ,  H01F38/12

CPC classification number: H01F38/12 ,  H01F27/022

Abstract: PROBLEM TO BE SOLVED: To solve the problem wherein cracks might be extended along an adhesion boundary between the fitting part of a head case and an insulating resin due to a heat cycle in a stick-type ignition coil. SOLUTION: The stick-type ignition coil comprises a cylindrical drum case 12 housing a primary coil 21, a secondary coil 17 and the like; a head case 32 including a housing 33 where an ignitor 34 is housed and a cylindrical fitting part 36 fitted to the outer circumference of the upper end cylinder 13 of the drum case 12; a holder 41 covering the upper ends of the primary coil 21, the secondary coil 17 and the like; an annular insulating resin 72 filling an empty space 71 demarcated with the upper ends of the primary coil 21 and the like, the upper end cylinder 13, the fitting part 36, and the holder 41; and a crack extension preventing means 60. The crack extension preventing means 60 is composed of a part 62 of the fitting part 36 of the head case 32 and a part 65 of the holder 41 and located above the mating surface 76 of the fitting part 36 with the upper end cylinder 13 to prevent cracks from extending from the upper end of the upper end cylinder 13 as a starting point toward the ignitor 34 along the adhesion boundary 77 between the insulating resin 72 and the fitting part 36. COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：为了解决由于棒状点火线圈中的热循环而导致的头壳体的嵌合部与绝缘树脂之间的附着界面发生裂纹的问题。 棒状点火线圈包括容纳初级线圈21，次级线圈17等的圆柱形鼓壳12; 包括收纳有点火器34的壳体33的头部外壳32和安装在鼓壳12的上端筒13的外周的筒状嵌合部36; 覆盖初级线圈21的上端的保持器41，次级线圈17等; 填充与初级线圈21等的上端划分的空的空间71，上端筒13，嵌合部36以及保持架41的环状绝缘树脂72。 和裂纹扩展防止装置60.裂纹扩展防止装置60由头部壳体32的装配部分36的部分62和保持器41的部分65组成，并且位于装配部分36的配合表面76上方 上端筒13防止从上端筒13的上端开始沿着绝缘树脂72与嵌合部36之间的粘合边界77朝向点火器34延伸的裂纹。版权所有： （C）2006，JPO＆NCIPI

公开(公告)号：JP2005113747A

公开(公告)日：2005-04-28

申请号：JP2003347532

申请日：2003-10-06

Applicant: Denso Corp ,  株式会社デンソー

Inventor： TOKINAGA KOJI ,  KAWAI KAZUHIDE

IPC: F02P15/00

Abstract: PROBLEM TO BE SOLVED: To provide an ignition coil mounting structure reducing friction at a time of turning an ignition coil when the ignition coil is turned to lock a locking part with a locked part after inserting a coil part of the ignition coil into a coil insertion hole of a cylinder head.
SOLUTION: In this mounting structure, the ignition coil 20 composed of a pole shape coil part 21 and a control part 24 connected to one end of the coil part is mounted by seating the control part on a end surface 11 of a cylinder head 10 and inserting the coil part into the coil insertion hole 12 opening on the end surface. The structure consists of the locking part 15 formed on the cylinder head 10 or the ignition coil, the locked part 27 formed on the ignition coil or the engine head and locked with the locking part by turning the ignition coil, and friction reducing means 36, 38 reducing friction between the ignition coil and a cylinder head at a time of turning the ignition coil.
COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种点火线圈安装结构，当点火线圈转动时，在点火线圈的线圈部分插入到锁定部之后，使点火线圈转动时的摩擦减小， 气缸盖的线圈插入孔。 解决方案：在该安装结构中，通过将控制部分安装在气缸的端面11上来安装由杆状线圈部21和连接到线圈部的一端的控制部24构成的点火线圈20 头部10，并将线圈部分插入在端面上开口的线圈插入孔12中。 该结构由形成在气缸盖10或点火线圈上的锁定部分15，形成在点火线圈或发动机头部上的锁定部分27，并通过转动点火线圈与锁定部分锁定，以及摩擦减小装置36， 38在点火线圈转动时降低点火线圈与气缸盖之间的摩擦。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2005090484A

公开(公告)日：2005-04-07

申请号：JP2004159845

申请日：2004-05-28

Applicant: Denso Corp ,  株式会社デンソー

Inventor： KAWAI KAZUHIDE ,  KATO HIDEYUKI

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

Abstract: PROBLEM TO BE SOLVED: To provide an ignition coil 1 for an internal combustion engine capable of absorbing relative eccentricity of the ignition coil 1 to an ignition plug 200 and securely engaging and holding the ignition coil 1 and the ignition plug 200. SOLUTION: A high-pressure connection fixed part 76 of a high-pressure terminal 71 of the ignition coil 1 is provided with a tubular high-pressure lower end cylindrical part 78 extending to a lower side and wherein at least three or more through windows 79 are formed in a circumferential direction; and with an approximately C-shaped high-pressure connection fixed ring 90 which is fitted to an outer peripheral side of the high-pressure lower end cylindrical part 78 and wherein at least three or more projecting parts 91 projecting in an inner peripheral side, engaged with the through windows 79, engaged with a head part terminal 201 of the ignition plug 200 and electrically connected with the ignition plug 200 are formed. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种能够吸收点火线圈1相对于火花塞200的相对偏心的内燃机的点火线圈1，并且可靠地接合和保持点火线圈1和火花塞200。 P>解决方案：点火线圈1的高压端子71的高压连接固定部76设置有延伸到下侧的管状高压下端圆筒部78，并且其中至少三个以上通过 窗口79沿圆周方向形成; 并且具有大致C形的高压连接固定环90，其配合到高压下端圆筒部78的外周侧，并且其中在内周侧突出的至少三个以上的突出部91接合 其中形成有与火花塞200的头部端子201接合并与火花塞200电连接的通孔79。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2004324432A

公开(公告)日：2004-11-18

申请号：JP2003116125

申请日：2003-04-21

Applicant: Denso Corp ,  株式会社デンソー

Inventor： SATO YOSHITAKA ,  KAWAI KAZUHIDE

IPC: F02P13/00 ,  F02P15/00 ,  H01F38/12 ,  H01T13/04 ,  H01T13/44

Abstract: PROBLEM TO BE SOLVED: To provide an ignition device for an internal combustion engine restraining water from entering a plug hole. SOLUTION: An ignition coil 3 has a coil flange part 4 closing an opening part 21 of the plug hole 20, and an annular sealing plate 1 is interposed between a lower face 41 of the coil flange part 4 and a peripheral edge 210 of the opening part. The sealing plate 1 has a gas passage allowing gas exchange between the inside of the plug hole 20 and the outside of a cylinder head 2. The gas passage is formed of a through passage provided inside the sealing plate 1, provided with an inner opening part and an outer opening part opened to the inner peripheral surface and outer peripheral surface respectively and crossing radially between the inner peripheral surface and the outer peripheral surface. The through passage is provided inside with two water sump parts formed larger in diameter than the inner opening part and outer opening part. COPYRIGHT: (C)2005,JPO&NCIPI

公开(公告)号：JP2004253818A

公开(公告)日：2004-09-09

申请号：JP2004153514

申请日：2004-05-24

Applicant: Denso Corp ,  株式会社デンソー

Inventor： SATO YOSHITAKA ,  SUGIURA AKIMITSU ,  AOYAMA MASAHIKO ,  KAWAI KAZUHIDE

IPC: F02P15/00 ,  H01F38/12

Abstract: PROBLEM TO BE SOLVED: To provide an ignition coil which generates a desired high voltage, by restraining the occurrence of cracks near the corners of both ends in the axis direction of a center core part. SOLUTION: A rubber cylindrical member 17 is integrally molded in the shape of a cylindrical bag. The cylindrical member 17 covers the outer peripheral side surface of a center core part 12 comprising a core body 13 and permanent magnets 14 and 15, the corners of both the ends in the axial direction and a part of both end surfaces in the axial direction. Consequently, since cracks are prevented from occurring at the periphery of the outer peripheral side surface of the center core part 12, and a secondary spool 20 near the corners of both the ends of the center core part 12 and an epoxy resin 26, where the cracks are especially easy to occur, discharging between a high-voltage part and the center core part 12 is prevented. Further, by making the cylindrical member 17 deform elastically so that forces that the center core part 12 receives in the radial direction and the axial direction is relaxed, magnetostriction will not be generated at the center core part 12. Consequently, a desired high voltage is applied to an ignition plug. COPYRIGHT: (C)2004,JPO&NCIPI

公开(公告)号：JP2004200656A

公开(公告)日：2004-07-15

申请号：JP2003373496

申请日：2003-10-31

Applicant: Denso Corp ,  株式会社デンソー

Inventor： TAKEYAMA SHOICHI ,  KAWAI KAZUHIDE ,  AOYAMA MASAHIKO

IPC: F02P3/02 ,  F02P13/00 ,  H01F27/32 ,  H01F38/12 ,  H01T13/44

CPC classification number: F02P13/00 ,  F02P3/02 ,  H01F27/325 ,  H01F27/327 ,  H01F38/12 ,  H01T13/44

Abstract: PROBLEM TO BE SOLVED: To provide an ignition coil having a primary spool with high environment resistance. SOLUTION: The ignition coil 1 is mounted on a plug hole 5, and has a primary spool 24 and a primary winding 25 wound around the peripheral surface of the primary spool 24. The part of the ignition coil communicating to an internal space of the plug hole 5 on the surface of the primary spool 24 is formd of a crystalline resin. COPYRIGHT: (C)2004,JPO&NCIPI

公开(公告)号：JP2004006739A

公开(公告)日：2004-01-08

申请号：JP2003081488

申请日：2003-03-24

Applicant: DENSO CORP

Inventor： ADACHI MASAYASU ,  NAKASE YOSHIMI ,  KAWAI KAZUHIDE ,  CHIBA TOMONARI

IPC: H01F38/12

Abstract: PROBLEM TO BE SOLVED: To provide an ignition coil which generates a desired high voltage by suppressing cracks on a resin insulator near an inner peripheral corner at the end in an axial direction of an outer peripheral core without enlarging the body in the radial direction of the ignition coil. SOLUTION: An attaching part 23b is formed at the end of a primary spool 23 positioned on the low voltage side of a secondary coil 21, and a ring member 51 is fitted to the attaching part 23b. The outer peripheral core 25 is mounted on the outer peripheral side of the primary coil 24, and the inner peripheral corners at both ends in the axial direction of the outer peripheral core 25 are covered with the ring member 51 made of rubber. Since the ring member 51 prevents an epoxy resin 26 from directly contacting the inner peripheral corners at both ends of the outer peripheral core 25, the cracks due to temperature change on the epoxy resin 26 near the inner peripheral corners at both ends of the outer peripheral core 25 are suppressed. Thus, since electric discharge between a low voltage part of the outer peripheral core 25 and a high voltage part is suppressed, the desired high voltage is applied to an ignition plug. COPYRIGHT: (C)2004,JPO