公开(公告)号：JP2005310846A

公开(公告)日：2005-11-04

申请号：JP2004122208

申请日：2004-04-16

Applicant: Denso Corp ,  株式会社デンソー

Inventor： TAKEYAMA SHOICHI ,  AOYAMA MASAHIKO ,  KAWAI KAZUHIDE

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

Abstract: PROBLEM TO BE SOLVED: To provide a stick-type ignition coil wherein a secondary coil in the internal circumferential side and a primary coil in the external circumferential side are allocated coaxially, the thickness of insulating resin between these coils is constant, and a fine secondary coil is not easily damaged, and also to provide an assembling method of this stick-type ignition coil. SOLUTION: The stick type ignition coil is formed of a center core 11, the secondary coil 13 allocated in the external circumferential side of the center core 11 and formed by winding the secondary coil 15 to a cylindrical secondary spool 14, the primary coil 21 allocated in the external circumferential side and formed by winding the primary coil 23 to a cylindrical primary spool 22, and a coil case 25 allocated in the external circumferential side thereof. In this ignition coil, positioning portions 19, 41 for positioning the end 61 of a core-adjusting member 65 for adjusting the core of the secondary coil and the primary coil are formed at the center of one end of the secondary spool. 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，其中内周侧的次级线圈和外周侧的初级线圈被同轴地分配，这些线圈之间的绝缘树脂的厚度是恒定的，并且 细小的次级线圈不容易损坏，并且还提供该棒状点火线圈的组装方法。 解决方案：棒状点火线圈由中心芯11形成，次级线圈13分配在中心芯11的外周侧，并通过将次级线圈15卷绕到圆柱形次级线轴14上而形成，初级 线圈21在外周侧分配并通过将初级线圈23卷绕到圆筒形初级线轴22上而形成，线圈壳25在其外周侧分配。 在该点火线圈中，用于定位用于调整次级线圈的芯的芯调节构件65的端部61和初级线圈的定位部分19,41形成在次级线圈的一端的中心。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2004186588A

公开(公告)日：2004-07-02

申请号：JP2002354171

申请日：2002-12-05

Applicant: Denso Corp ,  株式会社デンソー

Inventor： KAWAI KAZUHIDE ,  AOYAMA MASAHIKO ,  TAKEYAMA SHOICHI

IPC: H01F38/12

Abstract: PROBLEM TO BE SOLVED: To provide an ignition coil which is protected against damage caused by a corona discharge and small in outer diameter. SOLUTION: The ignition coil 1 is equipped with a rod-shaped center core 21 and a cylindrical secondary spool 22 which is arranged outside the center core 21 and provided with an outer surface wound with a secondary winding 23. The radial cross sectional area of the one axial end 211 of the center core 21 is set above 95% to 100% as large as that of the inner part of the one axial end 222 of the secondary spool 22. COPYRIGHT: (C)2004,JPO&NCIPI

公开(公告)号：JP2003234222A

公开(公告)日：2003-08-22

申请号：JP2002034240

申请日：2002-02-12

Applicant: DENSO CORP

Inventor： ISHITANI MASAHIRO ,  KAWAI KAZUHIDE ,  SANO MASAFUYU ,  TAUCHI KOJI

IPC: F02P13/00 ,  F02F1/24 ,  F02P15/00 ,  H01F38/12

Abstract: PROBLEM TO BE SOLVED: To provide an ignition coil fixing mechanism that can prevent the occurrence of interference between the outer peripheral surface of an ignition coil and the inner peripheral surface of a plug hole when the coil is inserted into the hole and, in addition, can suppress the rattling of the coil when the coil is used. SOLUTION: This ignition coil fixing mechanism 1 is provided with a cylindrical ignition coil 2 and a cylinder head 6 having the plug hole 60 into which the coil 2 is inserted. The mechanism 1 is also provided with a fixing means 3 which is interposed between the outer peripheral surface of the coil 2 and the inner peripheral surface 600 of the hole 60, and fixes the coil 2 to the hole 60 without connecting the outer peripheral surface of the coil 2 with the inner peripheral surface 600 of the hole 60 when the coil 2 is inserted into the hole 60, but connecting the peripheral surfaces to each other when the coil 2 is used. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2003197448A

公开(公告)日：2003-07-11

申请号：JP2002144902

申请日：2002-05-20

Applicant: DENSO CORP

Inventor： NAGATA TAKASHI ,  OSUGA KAZUTOYO ,  KONISHI ATSUSHI ,  KAWAI KAZUHIDE ,  WADA JUNICHI

IPC: H01F38/12

Abstract: PROBLEM TO BE SOLVED: To provide an ignition coil which has high electrical insulation characteristics and is low in production costs. SOLUTION: The ignition coil 1 include a case 2, a core 22 located inside the case 2, a primary spool 25 located coaxially around the core 22 in the case 2, a primary coil 26 wound around the primary spool 25, a secondary spool 23 located coaxially around the core 22 in the case 2, a secondary coil 24 wound around the secondary spool 23, and a resin insulator 5 filled in the case 2. Between the primary spool 25 and the secondary spool 23, the spool between the secondary coil 24 and the core 22 and/or the secondary coil 24 and the primary core 26 is composed of a base material resin, which is lower than polybutyleneterephthalate in adhesion with respect to the resin insulator 5, and is higher than polyphenylenesulphide in dielectric breakdown voltage. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2002227755A

公开(公告)日：2002-08-14

申请号：JP2001028612

申请日：2001-02-05

Applicant: DENSO CORP

Inventor： AOYAMA MASAHIKO ,  FUJIYAMA TOKUICHI ,  TAUCHI KOJI ,  WADA JUNICHI ,  KAWAI KAZUHIDE ,  SANO MASAFUYU ,  SHIMOIDE SACHIHIRO ,  OSUGA KAZUTOYO

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

Abstract: PROBLEM TO BE SOLVED: To provide an ignition coil for an engine capable of reducing wear of connection part due to engine vibration. SOLUTION: Since a spring 42 has a smaller winding diameter at both ends 42a and 42b than a winding diameter at a center part 42c, a spring load of the spring 42 is increased to reduce contact resistances at a connection part of one end 42a of the spring 42 with a high-tension terminal 41 and a connection part of another end 42b of the spring 42 with a coil side terminal 111 of an ignition plug 110. Consequently, wear of the connection parts of the spring 42 with the high-tension terminal 41 and the ignition plug 110 from engine vibration can be reduced to prevent disturbing conduction of very small electric current such as ion current and to make detection of very small electric current easy. Misjudgment with an ignition monitor utilizing change of very small electric current in a secondary side can be prevented. Desired high voltage thereby can be applied to the ignition plug 110.

公开(公告)号：JP2002124123A

公开(公告)日：2002-04-26

申请号：JP2000316702

申请日：2000-10-17

Applicant: DENSO CORP

Inventor： AIDA KENJI ,  KAWAI KAZUHIDE ,  KASUYA SHINOBU ,  YOSHINAGA TORU ,  YONEIMA KENJI ,  UNO EIICHI ,  KIJITANI IZUMI

IPC: F21V29/02 ,  F21S8/10 ,  F21V19/00 ,  F21V31/03 ,  F21W101/10 ,  F21Y101/00

Abstract: PROBLEM TO BE SOLVED: To heighten a cooling effect by directly cooling a lighting control circuit 3 or a part of the same housed in a lamp housing 2 with air flow, for a vehicle headlight 1 using a discharge lamp. SOLUTION: An air path P, composed of a space K housing a lighting control circuit 3 or a part of the same, and openings 2a1, 2a2 making inside of a lamp housing 2 communicate with the outside of the same, is formed to the lamp housing 2, and an intake 2b (a ventilation means) opened toward the front side of the vehicle is installed, and the intake 2b is made to communicate with the air path P. By the above, as the air is taken in at the intake 2b when the vehicle is running, and flows from the opening 2a2 to the air path P, and flows outside the lamp housing at the opening 2a1, the lighting control circuit 3 or a part of the same, a reflector 5, and the lamp housing 2 are directly cooled by the air, and the cooling efficiency is heightened.

公开(公告)号：JP2000138126A

公开(公告)日：2000-05-16

申请号：JP30994198

申请日：1998-10-30

Applicant: DENSO CORP

Inventor： CHIBA TOMONARI ,  KAWAI KAZUHIDE

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

Abstract: PROBLEM TO BE SOLVED: To provide an ignition coil on which the breaking of wire material can be prevented even when temperature change is repeated and dielectric breakdown can be prevented. SOLUTION: The protruding part 34 formed on a cover part 30 is arcuately shaped on the opposite side in radial direction of both coils against a terminal 32. The protruding part 34 comes in contact with the end part of on the low voltage side of an outer circumferential core 25, and it presses the outer circumferential core 25 to the side of the erastic member 26 which is on high voltage side. As the cover part 30 is formed separately from both spools, even when cracks are generated on the protruding part 34 by the difference in line expression coefficient of the cover part 30 and the other circumferential core 25, the cracks can be prevented from extending to the spool and the coil. Accordingly, the breaking of wire of wire material in the ignition coil can be prevented, and also the dielectric breakdown on the low voltage side on the circumference of the ignition coil can be prevented.

公开(公告)号：JPH1140445A

公开(公告)日：1999-02-12

申请号：JP19578997

申请日：1997-07-22

Applicant: DENSO CORP ,  UCHIYAMA MFG

Inventor： KAWAI KAZUHIDE ,  OSUGA KAZUTOYO ,  OKAMOTO MASARU ,  SENDA TOSHIO

IPC: H01F38/12

Abstract: PROBLEM TO BE SOLVED: To provide an ignition coil which can generate a desired high voltage and can be assembled easily, by suppressing the occurrence of cracks in a resin insulating material near the inner peripheral corners of both end sections of an outer peripheral core in the axial direction, without enlarging the physical body of the coil in the radial direction. SOLUTION: In an ignition coil, an outer peripheral core 25 is not in direct contact with an epoxy resin 26, because the inner peripheral corner of the end section of the core 25 positioned on the higher voltage side of a secondary coil 21 is covered with a corner member 50, and the inner peripheral corner of the end section of the core 25 on the lower voltage side is covered with another corner member 55. Each corner member 50 (55) is composed of a rubber ring 51 (56) and a metallic ring 52 (57). Therefore, the ignition coil can generate a desired high voltage by preventing the occurrence of cracks in the epoxy resin 36 near the inner peripheral corners of both end sections of the core 25. In addition, the corner member 50 (55) can be assembled easily, by the reinforcement of the metallic ring 52 (57) to the member 50 (55), because the member 50 (57) is not deformed.

公开(公告)号：JP2015018921A

公开(公告)日：2015-01-29

申请号：JP2013144902

申请日：2013-07-10

Applicant: 株式会社デンソー ,  Denso Corp

Inventor： KAWAI KAZUHIDE

IPC: H01F38/12 ,  F02P15/00

Abstract: 【課題】めっき層を除去する加工を省略して、イグナイタ端子とコネクタ端子とを安定して接合することができる内燃機関用点火コイルのイグナイタ接合構造を提供すること。【解決手段】イグナイタ接合構造1は、点火コイル6において、イグナイタ2から引き出された複数のイグナイタ端子3と、点火コイル1を外部と接続するためのコネクタ部4に設けられた複数のコネクタ端子5とを、複数のイグナイタ端子3の並び方向Aに対する直交方向Bにおいて接合するものである。複数のイグナイタ端子3は、板形状の導体層301と導体層301の両表面34に設けられためっき層302とを有する板金30から切り抜かれ、この切り抜かれた部位に生ずる破断面303が、並び方向Aに位置する状態から、直交方向Bに位置するよう90?向きを変えられて変形されている。複数のイグナイタ端子3は、破断面303を介して複数のコネクタ端子5に接合されている。【選択図】図1

Abstract translation: 要解决的问题：提供一种用于能够稳定地连接点火器端子和连接器端子的内燃机的点火线圈的点火器接合结构，同时消除去除镀层的处理。解决方案：在点火器接合结构1中， 点火线圈6，从点火器2拉出的多个点火器端子3和设置在用于将点火线圈6与外部连接的连接器部分4的多个连接器端子5在与多个点火器的对准方向A正交的方向B上接合 多个点火器端子3从具有板状导体层301的金属板30和设置在导体层301的两个表面34上的镀层302切割出，并且在切口处产生断裂面303 部分变形，使得方向被改变90°以从正向方向B位于定位方向A.多个点火器端子3连接到第 多个连接器端子5经由断裂面303。

公开(公告)号：JP2012019198A

公开(公告)日：2012-01-26

申请号：JP2011096431

申请日：2011-04-22

Applicant: Denso Corp ,  株式会社デンソー

Inventor： NAKAO KENGO ,  KAWAI KAZUHIDE ,  AKIMOTO KATSUNORI

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

CPC classification number: F02P3/02 ,  F02P13/00 ,  H01F27/02 ,  H01F38/12

Abstract: PROBLEM TO BE SOLVED: To provide an ignition coil for an internal combustion engine which prevents water from easily intruding into a water retention chamber and easily discharges water accumulated in the water retention chamber.SOLUTION: An ignition coil for an internal combustion engine 1 includes a cylinder part 2 and a head part 4. A column part 44, forming a part of a ventilation passage which connects the interior of plug holes with the exterior of the plug holes through pieces of seal rubber 6, and a cover part 5 covering the column part 44 are provided on a side surface of the head part 4. The cover part 5 has a peripheral wall 55 covering the column part 44 in the upside and peripheral direction, a lower wall 51 covering a lower side of the peripheral wall 55, a water retention chamber 50 which is a space enclosed by the peripheral wall 55 and the lower wall 51, and communication holes 52 provided at the lower wall 51. A lower end surface of the lower wall 51 is located above a lower end surface of the peripheral wall 55.

Abstract translation: 要解决的问题：提供一种用于内燃机的点火线圈，其防止水容易地侵入到保水室中并且容易地排放积聚在保水室中的水。 解决方案：用于内燃机1的点火线圈包括气缸部分2和头部4.柱部44，形成将插塞孔内部与插头外部连接的通风通路的一部分 在头部4的侧面设置有贯穿密封橡胶6的孔和覆盖柱部44的盖部5.盖部5具有在上侧和周向上覆盖柱部44的周壁55 ，覆盖周壁55的下侧的下壁51，由周壁55和下壁51包围的空间的保水室50以及设置在下壁51的连通孔52的下端 下壁51的表面位于周壁55的下端表面之上。版权所有：（C）2012，JPO＆INPIT