GB2176061A - Internal combustion engine spark plug connector - Google Patents

Internal combustion engine spark plug connector Download PDF

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Publication number
GB2176061A
GB2176061A GB08513013A GB8513013A GB2176061A GB 2176061 A GB2176061 A GB 2176061A GB 08513013 A GB08513013 A GB 08513013A GB 8513013 A GB8513013 A GB 8513013A GB 2176061 A GB2176061 A GB 2176061A
Authority
GB
United Kingdom
Prior art keywords
connector
socket
spark plug
collar
click
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.)
Granted
Application number
GB08513013A
Other versions
GB2176061B (en
GB8513013D0 (en
Inventor
Herbert Walker
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB8513013A priority Critical patent/GB2176061B/en
Publication of GB8513013D0 publication Critical patent/GB8513013D0/en
Publication of GB2176061A publication Critical patent/GB2176061A/en
Application granted granted Critical
Publication of GB2176061B publication Critical patent/GB2176061B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/20—Coupling parts carrying sockets, clips or analogous contacts and secured only to wire or cable
    • 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
    • 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
    • H01T13/05—Means providing electrical connection to sparking plugs combined with interference suppressing or shielding means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/627—Snap or like fastening
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2101/00—One pole

Landscapes

  • Spark Plugs (AREA)

Abstract

The usual metal collar or socket of a spark plug connector is replaced by a plastic member profiled to provide the necessary "click on" feature to hold the connector on to the plug. The profiled plastic member may be moulded simultaneously and integrally with the body of the connector. The design permits the usual cable connection and angular orientation features and embraces non "Suppressed" and "Suppressed" types. <IMAGE>

Description

SPECIFICATION Internal combustion engine spark plug connector It is common practice to ignite the fuel mixture in Internal Combustion Engines by means of an electric spark caused with the engine cylinder at the appropriate time in the cycle. To facilitate the introduction of the spark it is common practice to fix a ceramic bush or Spark Plug through the cylinder wall. A conductor fixed with the ceramic block bush and so insulated from the engine metal is used to transfer the electrical pulse needed for the spark from the outside of the cylunder into the inside of the cylinder.
It is also common practice to employ a Connector fitted with a Socket which has a "click on" feature to hold the Connector onto the external end of the Spark Plug conductor. The invention concerns the "click on" function which is necessary to provide a convenient connect and disconnect option.
It is normal for this "click on" feature to be achieved by a metal collar or socket which is fitted with a projecting profile or member which as the connector is thrust on to the plug springs over the bass end on the Spark Plug conductor and engages with a groove on the plug side of the conductor so providing a retention effect which is readily recersible if the plug connector is pulled from the plug.
The common practice is to use either a metal collar in which the spring action is due to tension in the collar or to use a rigid socket in which the spring action is due to a separate but captive spring wire associated with the internal bore of the socket.
The collar methods suffers from the disadvantage that in service the spring action relaxes so the connector can fall off whilst the rigid socket method although more reliable mechanically requires a relatively expensive socket and spring component.
In both methods the metal collar or socket may need to be insert moulded or pressed into the plastic body of the connector which is also expensive and even when a rubber shroud is used instead of a plastic moulding there still remains the choise between an unreliable collar or an expensive socket.
The Invention omits the metal collar or socket altogether and uses instead inside the Connector body a modified internal profile which with an appropriate grade of plastic material provides the "click on" function for the negligible additional cost of plastic material and completely eleminates both the collar or socket cost and the assembly cost of fitting the collar or socket to the plastic body of the connector.
Extensive life testing has shown that with the correct profile and plastic material the Invention provides a better performance to cost ratio when compared with conventional plug connectors.
1. A method of manufacture of a Spark Plug Connector in which the metal collar or socket is replaced by a plastic member so profiled that it provides the "click on" retantion feature necessary.
2. A Spark Plug Connector as in 1, in which the "click on" plastic member is moulded simultaneously and integrally with the body of the Connector.
3. A Spark Plug Connector as in 1 or 2, in which the connection to the Ignition Cable is by metallic screw thread.
4. A Spark Plug Connector as in 1 or 2 or 3 in which an Interference Suppressor element is included in the internal circuit of the Connector.
5. A Spark Plug Connector as in 1 or 2 or 3 or 4 in which the construction provides linear or angular relationship between the axis of the Plug end of the Connector and the Ignition Cable end of the Connector.
Amendments to the claims have been filed, and have the following effect: (a) Claims 2, 3, & 4 above have been textually amended.
(b)Textually amended claims have been filed as follows: 2. A Spark Plug Connector as in 1. in which the "click on" plastic member is moulded simultaneously and integrally with the body of the Connector. X.
3. A Spark Plug connector as in 1. or 2. in which the connection to the Ignition Cable is by metallic screw thread. S.
4. A Spark Plug Connector as in 1. or 2 or 3 in which an Interference Suppressor element is included in the internal circuit of the connector. R.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (4)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Internal combustion engine spark plug connector It is common practice to ignite the fuel mixture in Internal Combustion Engines by means of an electric spark caused with the engine cylinder at the appropriate time in the cycle. To facilitate the introduction of the spark it is common practice to fix a ceramic bush or Spark Plug through the cylinder wall. A conductor fixed with the ceramic block bush and so insulated from the engine metal is used to transfer the electrical pulse needed for the spark from the outside of the cylunder into the inside of the cylinder. It is also common practice to employ a Connector fitted with a Socket which has a "click on" feature to hold the Connector onto the external end of the Spark Plug conductor. The invention concerns the "click on" function which is necessary to provide a convenient connect and disconnect option. It is normal for this "click on" feature to be achieved by a metal collar or socket which is fitted with a projecting profile or member which as the connector is thrust on to the plug springs over the bass end on the Spark Plug conductor and engages with a groove on the plug side of the conductor so providing a retention effect which is readily recersible if the plug connector is pulled from the plug. The common practice is to use either a metal collar in which the spring action is due to tension in the collar or to use a rigid socket in which the spring action is due to a separate but captive spring wire associated with the internal bore of the socket. The collar methods suffers from the disadvantage that in service the spring action relaxes so the connector can fall off whilst the rigid socket method although more reliable mechanically requires a relatively expensive socket and spring component. In both methods the metal collar or socket may need to be insert moulded or pressed into the plastic body of the connector which is also expensive and even when a rubber shroud is used instead of a plastic moulding there still remains the choise between an unreliable collar or an expensive socket. The Invention omits the metal collar or socket altogether and uses instead inside the Connector body a modified internal profile which with an appropriate grade of plastic material provides the "click on" function for the negligible additional cost of plastic material and completely eleminates both the collar or socket cost and the assembly cost of fitting the collar or socket to the plastic body of the connector. Extensive life testing has shown that with the correct profile and plastic material the Invention provides a better performance to cost ratio when compared with conventional plug connectors. CLAIMS
1. A method of manufacture of a Spark Plug Connector in which the metal collar or socket is replaced by a plastic member so profiled that it provides the "click on" retantion feature necessary.
2. A Spark Plug Connector as in 1, in which the "click on" plastic member is moulded simultaneously and integrally with the body of the Connector.
3. A Spark Plug Connector as in 1 or 2, in which the connection to the Ignition Cable is by metallic screw thread.
4. A Spark Plug Connector as in 1. or 2 or 3 in which an Interference Suppressor element is included in the internal circuit of the connector. R.
4. A Spark Plug Connector as in 1 or 2 or 3 in which an Interference Suppressor element is included in the internal circuit of the Connector.
5. A Spark Plug Connector as in 1 or 2 or 3 or 4 in which the construction provides linear or angular relationship between the axis of the Plug end of the Connector and the Ignition Cable end of the Connector.
Amendments to the claims have been filed, and have the following effect: (a) Claims 2, 3, & 4 above have been textually amended.
(b)Textually amended claims have been filed as follows:
2. A Spark Plug Connector as in 1. in which the "click on" plastic member is moulded simultaneously and integrally with the body of the Connector. X.
3. A Spark Plug connector as in 1. or 2. in which the connection to the Ignition Cable is by metallic screw thread. S.
GB8513013A 1985-05-23 1985-05-23 Internal combustion engine spark plug connector Expired GB2176061B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8513013A GB2176061B (en) 1985-05-23 1985-05-23 Internal combustion engine spark plug connector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8513013A GB2176061B (en) 1985-05-23 1985-05-23 Internal combustion engine spark plug connector

Publications (3)

Publication Number Publication Date
GB8513013D0 GB8513013D0 (en) 1985-06-26
GB2176061A true GB2176061A (en) 1986-12-10
GB2176061B GB2176061B (en) 1989-07-19

Family

ID=10579554

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8513013A Expired GB2176061B (en) 1985-05-23 1985-05-23 Internal combustion engine spark plug connector

Country Status (1)

Country Link
GB (1) GB2176061B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0715073A3 (en) * 1994-11-30 1997-08-13 Bayerische Motoren Werke Ag Apparatus for coupling one coil per plug ignition system with a cylinder head for an internal combustion engine
GB2353417A (en) * 1999-08-19 2001-02-21 Dezac Group Ltd Connectors and strap clips of muscle toner pads

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB545584A (en) * 1941-01-22 1942-06-03 British Thomson Houston Co Ltd Improvements in and relating to ignition plug connections for internal combustion engines
US3799168A (en) * 1972-02-28 1974-03-26 R Peters Electro-surgical handle
GB1501317A (en) * 1975-11-03 1978-02-15 Amp Inc Electrical connector housing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB545584A (en) * 1941-01-22 1942-06-03 British Thomson Houston Co Ltd Improvements in and relating to ignition plug connections for internal combustion engines
US3799168A (en) * 1972-02-28 1974-03-26 R Peters Electro-surgical handle
GB1501317A (en) * 1975-11-03 1978-02-15 Amp Inc Electrical connector housing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0715073A3 (en) * 1994-11-30 1997-08-13 Bayerische Motoren Werke Ag Apparatus for coupling one coil per plug ignition system with a cylinder head for an internal combustion engine
GB2353417A (en) * 1999-08-19 2001-02-21 Dezac Group Ltd Connectors and strap clips of muscle toner pads

Also Published As

Publication number Publication date
GB2176061B (en) 1989-07-19
GB8513013D0 (en) 1985-06-26

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920523