专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH097860A IGNITION COIL FOR INTERNAL COMBUSTION ENGINE USE 失效
公开(公告)号：JPH097860A
公开(公告)日：1997-01-10
申请号：JP15435995
申请日：1995-06-21
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： ITO TAKASHI , WATANABE HIROSHI , SUGIURA NOBORU , YASUKURA YOICHI , OISHI HIDETOSHI , KONDO EIICHIRO
IPC分类号： H01F38/12 , H01F30/00
摘要： PURPOSE: To form an ignition coil into a structure of a good space efficiency by a method wherein when steel plate materials are press laminated, the materials are integrally cured with a synthetic bonding agent, such as an epoxy, and after that, the laminated plate is molded into a cylinder shape by machining. CONSTITUTION: Primary and secondary coil bobbins 4 and 6, which are molded using a thermoplastic synthetic resin, are formed in a coil case 2, which is also molded using a thermoplastic synthetic resin, and primary and secondary coils 5 and 7 are respectively wound on the bobbins 4 and 6. Silicon steel plates are laminated on the inner side of the bobbin 4, the steel plates are cured integrally with each other using an epoxy bonding agent and after that, a core 3a molded into a cylinder shape by machining is inserted in the inner side of the laminated plate. A side-core 3b constituting a magnetic circuit is arranged on the outer side of the coil part and after a thermosetting resin 9 is injected and the core 3b is impregnated with the resin 9, the resin 9 is heated and cured and an ignition coil 1 is constituted. Moreover, a permanent magnet 12 is arranged in a closed magnetic circuit which is constituted of the cores 3a and 3b.

2. 发明专利

JPH01116287A IGNITION COIL FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH01116287A
公开(公告)日：1989-05-09
申请号：JP27301887
申请日：1987-10-30
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： KONDO EIICHIRO , WATANABE HIROSHI , NAKANE KENICHI
IPC分类号： F02P15/00 , F02P9/00 , H01F38/12
摘要： PURPOSE:To prevent any wrong ignition by providing a high voltage diode for applying no secondary voltage to an ignition plug, at the time of closing of a power transistor of the ignition coil, on the middle of the secondary coil winding. CONSTITUTION:A control unit 18 receives an electric signal 20 generated in synchronization with rotation of an internal combustion engine from a crank angle sensor 19 so as to allocate the signal to each of ignition coils. For example, when each of ignition coils receives an electric signal 21, the signal is led to a power transistor 10, so that current 22 flows through the primary coil 2. When the power transistor 10 is opened, the secondary high voltage is generated in its secondary coil 4 and applied to an ignition plug 8. on the other hand, the secondary voltage is generated in the secondary coil 4 also at the time of closing the power transistor 10. But the secondary voltage is not applied to the ignition plug 8 because a high voltage diode 9 is arranged. Because the high voltage diode 9 is arranged in the secondary coil winding 4, a necessary air gap can be secured without enlarging an ignition mechanism, so that it is possible to prevent any wrong ignition from being generated by the wrong secondary voltage.

3. 发明专利

JPS63221604A IGNITION COIL DEVICE OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS63221604A
公开(公告)日：1988-09-14
申请号：JP5405187
申请日：1987-03-11
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： KONDO EIICHIRO , WATANABE HIROSHI , NAKANE KENICHI , KOUHIRA TAKASHI
IPC分类号： H01F38/12
摘要： PURPOSE:To realize the size and weight reduction of an ignition coil device and avoid the misignition and improve the reliability by a method wherein the central cores of the respective ignition coils are arranged in parallel and both ends of the respective cores are magnetically connected to each other by side cores to make the respective central cores form closed magnetic circuits and, under such conditions, a plurality of the ignition coils are molded into one piece. CONSTITUTION:When an electric signal S is given to a control unit 8, the signal S is distributed into three electric signals S1-S3 and currents I1-I3 are alternately applied to primary coils 2, 3 and 4. When the current is cut off, a negative voltage and a positive voltage are induced at the output terminal 51 and the output terminal 52 of a secondary coil 5, respectively. The voltage Va induced at the output terminals 51 and 52 ignite ignition plugs P1 and P2 which are in the relation of compression and exhaust processes. Positive voltages and negative voltages are induced at output terminals 61 and 71 and output terminals 62 and 72 of secondary coils, respectively; sparks are not created at ignition plugs P3-P6 which are in absorption and explosion processes by the existence of high voltage diodes D2 and D3.

4. 发明专利

JPH0745453A IGNITION COIL FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH0745453A
公开(公告)日：1995-02-14
申请号：JP18581293
申请日：1993-07-28
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： KONDO EIICHIRO , SUGIURA NOBORU , WATANABE HIROSHI
IPC分类号： H01F27/32 , H01F30/00 , H01F38/12
摘要： PURPOSE:To enhance the impregnability of dielectric molding resin by constructing a secondary coil using a split secondary coil bobbin having a plurality of notches including one made at a flange part in order to pass a winding to next groove while setting the dimensions, i.e., the width of winding groove and the thickness of the flange for forming the winding groove, within a predetermined range. CONSTITUTION:A split secondary coil bobbin 3 has a plurality of flange parts 102 and grooves 101 wherein the width of each groove 101 is set in the range of 0.8-2.5mm and a secondary coil 4 is fitted in the groove 101. The flange part 102 has the thickness in the range of 0.6-1.2mm and the dimensions thereof are set to satisfy a formula B/A=O.85-1.0, where A is the thickness (mm) on the bottom side of the flange 106 and B is the thickness (mm) on the open side of the flange 105. The secondary coil 4 is constructed using the split secondary coil bobbin 3 wherein each flange part 102 is provided with a notch for passing the winding, fitted in the groove 101, to next groove 101 so that the winding is applied in series for each groove 101.

5. 发明专利

JPH033308A IGNITION COIL FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH033308A
公开(公告)日：1991-01-09
申请号：JP13606789
申请日：1989-05-31
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： ONARI TAKAHIDE , WATANABE HIROSHI , KIKUCHI KATSUHIKO
IPC分类号： H01F38/12
摘要： PURPOSE:To avoid the disconnection of a primary coil lead wire by burying the primary coil lead wire in a thermosetting resin such as epoxy resin etc. CONSTITUTION:Within the title ignition coil for internal combustion engine wherein a primary coil 2 and a secondary coil 4 are contained in a coil case 15 previously molded out of a thermoplastic synthetic resin 12 after connecting the terminal of the primary coil 2 to another primary terminal 8, a thermosetting synthetic resin 10 such as epoxy resin etc., is injected into the said coil case 15 to be thermoset and further after assembling component parts such as iron cores 13, 11, etc., into the coil part, the said ignition coil is exterior- molded out of the thermoplastic synthetic resin 12 such as polybutylene tetrapbthalate etc., a lead copper wire 8 of the primary coil 2 is buried in the epoxy resin 10 due to the shape of the primary terminal 8 to be electrically connected so that the copper wire 9 may be structured not to be buried in the exterior-molded resin 12. Through these procedures, the thermosetting synthetic resin 10 such as epoxy, etc., in small linear expansion coefficient can avoid the disconnection of the primary coil lead wire.

6. 发明专利

JPH01140706A IGNITION COIL FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH01140706A
公开(公告)日：1989-06-01
申请号：JP29760387
申请日：1987-11-27
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： KONDO EIICHIRO , WATANABE HIROSHI , NAKANE KENICHI
IPC分类号： H01F38/12
摘要： PURPOSE:To make a core small-sized and lightweight and to make an ignition coil small-sized and lightweight as a whole by a method wherein the core is constituted by using a ferrite and its outer circumference is covered with a cover made of a synthetic resin. CONSTITUTION:A ferrite whose magnetic permeability is particularly excellent is used for a core 11. A bobbin 1 2 on which a primary coil 8 or a secondary coil 9 is wound covers this ferrite core 11; the elastic bobbin 12 composed of a synthetic resin or the like is utilized as a protective material ot the ferrite core 11 which is a brittle sintered substance. By this setup, the core 11 can be made small-sized and, furthermore, an ignition coil can be made small-sized and lightweight as a whole.

7. 发明专利

JPS63272023A IGNITION COIL FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS63272023A
公开(公告)日：1988-11-09
申请号：JP10427087
申请日：1987-04-30
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： KONDO EIICHIRO , WATANABE HIROSHI
IPC分类号： H01F38/12
摘要： PURPOSE:To improve the heat radiation of a coil part and improve heat resistant properties by a method wherein a metal whose thermal conductivity is high is buried in the inner diameter side, contacted with a core, of the part of a primary bobbin to which a primary coil is applied and the outside of the metal is covered with an insulation with a specific thickness. CONSTITUTION:Primary and secondary coils 2 and 4 are housed in a case 8 and insulated with thermosetting synthetic resin 16 cured by heat to form an internal combustion engine ignition coil. A metal 5 whose thermal conductivity is high is buried in the inner diameter side, contacted with a core 13, the part of a primary bobbin 1, to which the primary coil 2 is applied; further the outside of the metal part is covered with an insulation with a thickness about 0.2-1.0 mm. With this constitution, the heat created in the coil part when the ignition coil is operated is transmitted from the metal with a high thermal conductivity to the core so that the heat resistant properties can be improved.

8. 发明专利

JPH0917662A IGNITION DEVICE FOR INTERNAL-COMBUSTION ENGINE 失效
公开(公告)号：JPH0917662A
公开(公告)日：1997-01-17
申请号：JP16514195
申请日：1995-06-30
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： OISHI HIDETOSHI , SUGIURA NOBORU , WATANABE HIROSHI , YASUKURA YOICHI , KATAGISHI KENICHI , KONDO EIICHIRO
IPC分类号： F02P15/00 , H01F38/12 , H01F30/00
摘要： PURPOSE: To provide an ignition device for an internal-combustion engine, which excels in durability such as thermal shock resistance and insulation quality and has high reliability. CONSTITUTION: Air is prevented from entering a coil high-voltage part by disposing a center core 7, a low-voltage side core 18 or a high-voltage side core 9 inside a constituent member such as a primary bobbin 1, a secondary bobbin 3 or a case 5, containing it into a pocket formed in the constituent member or covering it with an elastic member to isolate a core from an epoxy resin 6 for insulation, thereby preventing air from entering the coil high-voltage part. Accordingly, bubbles are not left in the high-voltage part and an internal crack due to a thermal shock and the separation of the epoxy resin 6 for insulation and the constituent member can be prevented, thereby being able to enhance the thermal shock resistance and the insulating durability of a cylindrical ignition device.

9. 发明专利

JPH08339928A IGNITION COIL FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH08339928A
公开(公告)日：1996-12-24
申请号：JP14478695
申请日：1995-06-12
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： YASUKURA YOICHI , WATANABE HIROSHI , SUGIURA NOBORU , OISHI HIDETOSHI , ITO TAKASHI , KONDO EIICHIRO
IPC分类号： C08L81/02 , H01F27/32 , H01F30/00 , H01F38/12
摘要： PURPOSE: To reduce the thicknesses of a case and a primary bobbin and thereby reduce the size of the entire body of a component by forming the case and the primary bobbin of an ignition coil using polyphenylene sulfide resin. CONSTITUTION: A primary coil 5 and a secondary coil 7 are wound around bobbins 4 and 6 respectively and then are encased in a case 2. After that, cores 3a and 3b are assembled in the coils 5 and 7 respectively. Then, insulating material 8 is let to fill the case 2 so that the case 2 may have an insulating structure. The case 2 is then installed in a plug hole 12 of each cylinder. Especially, the primary bobbin 4 and the case 2 of an ignition coil 1 are formed of polyphenylene sulfide resin. As for the insulating material 8, thermosetting synthetic resin is used. By this, the primary bobbin 4 and the case 2 can have good electric characteristics including an excellent withstand voltage property and they can also have an excellent formability since they are made of polyphenylene sulfide resin. As a result, the size of the entire body of a component can be reduced without deteriorating electric characteristics because the thicknesses of the primary bobbin 4 and the case 2 can be made small.

10. 发明专利

JPH08293418A IGNITION SYSTEM FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH08293418A
公开(公告)日：1996-11-05
申请号：JP9652795
申请日：1995-04-21
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： KONDO EIICHIRO , SUGIURA NOBORU , KOBAYASHI KAZUTOSHI , KATAGISHI KENICHI , YASUKURA YOICHI , OISHI HIDETOSHI , WATANABE HIROSHI
IPC分类号： F02P13/00 , F02P3/02 , F02P15/00 , H01F3/10 , H01F27/02 , H01F27/245 , H01F27/32 , H01F38/12 , H01F30/00
摘要： PURPOSE: To provide a small-size and light-weight ignition system for internal combustion engine which provides high outputs. CONSTITUTION: By magnetically coupling a center core 7 and a side core 8 by a low-tension side core 9 provided on a low-tension side of a secondary coil 4 and a high-tension side core 10 provided on a high-tension side of the secondary coil 4, a closed magnetic circuit is formed. A magnet 12 is put in a core gap portion 11.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式