EP0362777A1 - Hochspannungskabel aufnehmende Vorrichtung - Google Patents

Hochspannungskabel aufnehmende Vorrichtung Download PDF

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Publication number
EP0362777A1
EP0362777A1 EP89118264A EP89118264A EP0362777A1 EP 0362777 A1 EP0362777 A1 EP 0362777A1 EP 89118264 A EP89118264 A EP 89118264A EP 89118264 A EP89118264 A EP 89118264A EP 0362777 A1 EP0362777 A1 EP 0362777A1
Authority
EP
European Patent Office
Prior art keywords
plug
plug cap
tension cable
high tension
ignition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP89118264A
Other languages
English (en)
French (fr)
Inventor
Kiyoshi Yagi
Seiichi Wakabayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yazaki Corp
Original Assignee
Yazaki Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yazaki Corp filed Critical Yazaki Corp
Publication of EP0362777A1 publication Critical patent/EP0362777A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/02—Details
    • H01T13/04—Means providing electrical connection to sparking plugs

Definitions

  • This invention relates to a high tension cable, and more particularly to a high tension cable suitable for use with an ignition device to which an additional function part is added such as an ignition device with a series gap.
  • a high tension cable device for applying a high voltage boosted by an ignition coil to an ignition plug therethrough is commonly known.
  • an additional function part of various types is often accommodated in a plug cap which fits with an ignition plug.
  • an ignition device with a series gap has been proposed wherein a so-called series gap is provided at a portion of a high tension cable immediately before an ignition plug to prevent smoking of the ignition plug.
  • FIG. 4 shows such an ignition device C with a series gap therein as described above.
  • a discharge tube 33 acting as a series gap S is incorporated between a high tension cable 31 connected to a powr source side and an ignition plug 32.
  • the discharge tube 33 has a needle electrode 34 at an end portion thereof at which it is connected to the high tension cable 31, and has a flat plate electrode 35 at the other end thereof at which it is connected to the ignition plug 32.
  • the distance between the electrodes 34 and 35 defines the series gap S mentioned above.
  • the ignition device C having a series gap described above, the high tension cable 31 and the discharge tube 33 which serves as a series gap are connected directly to each other, and actually, attention is not paid very much to assembling facility or productivity in assembling the discharge tube or universal use or the like of the cable.
  • a high tension cable device which has an ignition plug fitted at an end portion thereof and is connected at the other end portion thereof to a power source side to apply a high voltage to the ignition plug is constituted such that a plug cap for fitting with the ignition plug has a split structure and has formed therein an empty chamber for incorporating an additional function part such as a series gap therein, and an electrode terminal for engaging with a terminal of the igntion plug is disposed at an end portion of the empty chamber while an electrode terminal connected to the high tension cable is disposed at the other end portion of the empty chamber.
  • the plug cap for fitting with the ignition plug has a split structure and the empty chamber for incorporating an additional function part such as a series gap therein is formed in the plug gap, the assembling facility and productivity of such additional function part are improved very much, and also the universal use of the cable can be attained.
  • reference numeral 1 denotes a plug cap substantially in the form of a hollow cylinder mounted at an end portion of a high tension cable 31 and made of a PBT material, an unsaturated polyester material or the like.
  • the plug cap 1 is divided into two longitudinal parts and is thus composed of an upper plug cap member 2 and a lower plug cap member 3.
  • the high tension cable 31 is inserted in the upper plug cap member 2 by way of a hole 4 formed at an upper end portion of the cap.
  • An electrode terminal 5 is securely mounted to an end portion of the high tension cable 31 by caulking such that a lower end portion 5a of the electrode terminal may be projected a little from a lower end opening 6 of the upper plug cap member 2.
  • the inside of the lower plug cap member 3 is divided into two longitudinal parts thereof by a partition wall 7 such that an empty chamber 8 for performing therein an additional function part such as a series gap between opposite longitudinal ends thereof which will be hereinafter described is formed on the upper side of the partition wall 7 while a plug chamber 9 for fitting with a head portion of an ignition plug not shown is fomed on the lower side of the partition wall 7.
  • the partition wall 7 has a small hole 10 formed therein for establishing communication between the empty chamber 8 and the plug chamber 9.
  • a plug terminal 11 having a contact portion 11a at an end portion thereof for engaging with a terminal of the ignition plug is fitted in the plug chamber 9 by way of a lower end opening 12 of the lower plug cap member 3 such that a terminal plate 11b formed at the other end portion of the plug terminal 11 by bending is positioned at an end of the small hole 10 on the plug chamber 9 side.
  • the upper plug cap member 2 is fitted into an upper opening 13 of the lower plug cap member 3 and then the fitting portion is molded from the outer side with a resin material 14 such as a PBT (polybutylene terephthalate) material or an unsaturated polyester material to integrate the upper plug cap member 2 and the lower plug cap member 3 with each other, then the plug cap 1 having a sufficient durability is formed.
  • a resin material 14 such as a PBT (polybutylene terephthalate) material or an unsaturated polyester material to integrate the upper plug cap member 2 and the lower plug cap member 3 with each other, then the plug cap 1 having a sufficient durability is formed.
  • the upper plug cap member 2 is covered from above over a substantially entire portion thereof except the fitting portion with the lower plug cap member 3 with a rain cover 15 made of an EPDM (ethylene-propylene copolymer rubber) material or a silicon or oil-containing silicon material to prevent water from entering the plug cap 1 after assembly.
  • a rain cover 15 made of an EPDM (ethylene-propylene copolymer rubber) material or a silicon or oil-containing silicon material to prevent water from entering the plug cap 1 after assembly.
  • another rain cover 16 is fitted around a lower end portion of the lower plug cap 3 so that, when the plug cap 1 is fitted with the terminal of the ignition plug, water may not enter a location around the ignition plug mounted on a cylinder head not shown.
  • the plug cap 1 is assembled such that, for example, a discharge tube 17 acting as a series gap is inserted into the empty chamber 8 of the lower plug cap member 3 by way of the upper end opening 13 of the plug cap member until an external terminal 17a of one of electrodes of the discharge tube 17 enters the small hole 10 and is contacted with the terminal plate 11b of the plug terminal and then the upper plug cap member 2 is telescopically inserted into the lower plug cap member 3 until the electrode terminal 5 at the leading end portion of the high tension cable 31 is contacted with an external terminal 17b of the other electrode of the discharge tube 17, then a high tension cable device having a series gap between the electrode terminals 5 and 11 in the inside therein is constructed thereby. Then, if the high tension cable device having a series gap is assembled to an ignition plug, then an ignition device with a series gap is constructed as a whole, and with the ignition device, an effective ignition voltage can be obtained whereas smoking of its ignition plug can be prevented.
  • a noise suppresser is inserted in the empty chamber 8
  • a high tension cable can be obtained which is provided with a countermeasure for radio noises, and the high tension cable can effectively cope with radio faults caused by a rise of a required voltage or the like involved in employment of a microcomputer in an automobile and improvement in performance of an engine in recent years.
  • an electric element such as an LCR circuit assembled on a printed circuit board or the like can also be inserted into the empty chamber 8, and by employing the split structure for the plug cap 1 in this manner, the assembling facility of various elements to the high tension cable device is improved very much and the productivity is improved.
  • FIGS. 2 and 3 show modifications wherein the coupling manner between the upper plug cap member 2 and the lower plug cap member 3 of the high tension cable device described hereinabove is changed.
  • a male thread portion 18 is formed on an outer periphery of a lower end portion of an upper plug cap member 2 while a female thread portion 19 is formed on an inner periphery of an upper end portion of a lower plug cap member 3, and a plug cap 1 is assembled by threaded engagement between the upper plug cap member 2 and the lower plug cap member 3.
  • a recessed groove 21 is formed at a lower end face of an upper plug cap member 2 in a concentrical relationship with an opening 6 of the plug cap, and a plurality of arresting holes 22 are formed at a lower end wall of the plug cap member 2 such that they communicate with the recessed groove 21 and are opened to an outer circumferential face of a lower end portion of the upper plug cap member 2.
  • a fitting portion 23 is formed at an upper end face of a lower plug cap member 3 for fitting into the recessed groove 21, and a plurality of hooks 24 are provided projectingly at locations of an outer periphery of the fitting portion corresponding to the arresting holes 22.
  • an O-ring 25 is interposed between the recessed groove 21 and the fitting portion 23.
  • a high tension cable device is constituted such that a plug cap for fitting with an ignition plug has a split structure and has formed therein an empty chamber for incorporating an additional function part such as a series gap therein, and an electrode terminal for engaging with a terminal of the ignition plug is disposed at an end portion of the empty chamber while an electrode terminal connected to the high tension cable is disposed at the other end portion of the empty chamber. Accordingly, an additional function part such as a series gap can be assembled very readily at a location immediately before the ignition plug, and the high tension cable device which is superior in assembling facility, productivity and universal use of the cable can be obtained.

Landscapes

  • Spark Plugs (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
EP89118264A 1988-10-04 1989-10-02 Hochspannungskabel aufnehmende Vorrichtung Withdrawn EP0362777A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP12956288U JPH0425813Y2 (de) 1988-10-04 1988-10-04
JP129562/88U 1988-10-04

Publications (1)

Publication Number Publication Date
EP0362777A1 true EP0362777A1 (de) 1990-04-11

Family

ID=15012560

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89118264A Withdrawn EP0362777A1 (de) 1988-10-04 1989-10-02 Hochspannungskabel aufnehmende Vorrichtung

Country Status (2)

Country Link
EP (1) EP0362777A1 (de)
JP (1) JPH0425813Y2 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5145433A (en) * 1989-07-14 1992-09-08 Yazaki Corporation High tension cable device and process of producing the same
US5593308A (en) * 1992-09-25 1997-01-14 Sumitomo Wiring Systems, Ltd. Connecting assembly for ignition plug in gasoline engine and method for producing same
WO2013020552A1 (de) * 2011-08-11 2013-02-14 Motortech Gmbh Zündkerzenstecker

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2206215A1 (de) * 1972-02-10 1973-08-23 Bosch Gmbh Robert Zuendkerzen-kabelanschlusstecker
GB1358670A (en) * 1971-08-25 1974-07-03 Kabel Metallwerke Ghh Connector for sparking plugs of internal combustion engines
US3995183A (en) * 1974-04-16 1976-11-30 Siemens Aktiengesellschaft Spark gap component for use in ignition systems of internal combustion engines
US4580341A (en) * 1982-12-30 1986-04-08 Precision Mecanique Labinal Electrical connector
DE3436628A1 (de) * 1984-10-05 1986-04-10 BERU Ruprecht GmbH & Co KG, 7140 Ludwigsburg Zuendkerze

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1358670A (en) * 1971-08-25 1974-07-03 Kabel Metallwerke Ghh Connector for sparking plugs of internal combustion engines
DE2206215A1 (de) * 1972-02-10 1973-08-23 Bosch Gmbh Robert Zuendkerzen-kabelanschlusstecker
US3995183A (en) * 1974-04-16 1976-11-30 Siemens Aktiengesellschaft Spark gap component for use in ignition systems of internal combustion engines
US4580341A (en) * 1982-12-30 1986-04-08 Precision Mecanique Labinal Electrical connector
DE3436628A1 (de) * 1984-10-05 1986-04-10 BERU Ruprecht GmbH & Co KG, 7140 Ludwigsburg Zuendkerze

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5145433A (en) * 1989-07-14 1992-09-08 Yazaki Corporation High tension cable device and process of producing the same
US5593308A (en) * 1992-09-25 1997-01-14 Sumitomo Wiring Systems, Ltd. Connecting assembly for ignition plug in gasoline engine and method for producing same
WO2013020552A1 (de) * 2011-08-11 2013-02-14 Motortech Gmbh Zündkerzenstecker
US9160120B2 (en) 2011-08-11 2015-10-13 Motortech Gmbh Spark plug connector

Also Published As

Publication number Publication date
JPH0250973U (de) 1990-04-10
JPH0425813Y2 (de) 1992-06-22

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