Ignition coil

Patent metadata

Field	Value
Publication number	US-10283263-B2
Application number	US-201715654081-A
Country	US
Kind code	B2
Filing date	Jul 19, 2017
Priority date	Jul 21, 2016
Publication date	May 7, 2019
Grant date	May 7, 2019

Abstract

Described is an ignition coil for an internal combustion engine having a housing with a plug connector, wherein the plug connector has an elastomeric cap slid onto a tubular housing section that surrounds a terminal contact. This disclosure provides that the terminal contact is surrounded by a circumferential slot, in which an inner edge of the cap sits.

First claim

What is claimed is:

1. An ignition coil for an internal combustion engine, comprising:
a housing having a plug connector;
the plug connector comprising an elastomeric cap disposed on a tubular housing section that surrounds a terminal contact;
a circumferential slot defined by a pair of opposing sidewalls, each of the sidewalls surrounding the terminal contact; and
an inner rim of the cap disposed in the circumferential slot.

2. An ignition coil for an internal combustion engine, comprising:
a housing having a plug connector;
the plug connector comprising an elastomeric cap disposed on a tubular housing section that surrounds a terminal contact;
a circumferential slot surrounding the terminal contact;
an inner rim of the cap disposed in the circumferential slot; and
wherein the terminal contact sits in an electrically insulating sleeve and the circumferential slot is formed between the electrically insulating sleeve and an inner surface of the tubular housing section.

3. The ignition coil according to claim 2 , wherein an interference resistor is arranged in the sleeve.

4. The ignition coil according to claim 2 , wherein the sleeve has a bead, which abuts against the tubular housing section on the inside.

5. The ignition coil according to claim 2 , wherein the sleeve is press-fitted into the tubular housing section.

6. The ignition coil according to claim 2 , wherein the sleeve ends flush with the terminal contact or projects over and beyond it.

7. The ignition coil according to claim 1 , wherein the cap fills the circumferential slot essentially completely.

8. The ignition coil according to claim 1 , wherein the inner rim of the cap touches a floor of the circumferential slot.

9. The ignition coil according to claim 1 , wherein the exterior side of the tubular housing section has a continuous projection engaged in a circumferential groove of the cap.

10. The ignition coil according to claim 9 , wherein the continuous projection is a latching hook.

Assignees

• Borgwarner Ludwigsburg Gmbh

Inventors

• Tridico Francesco
• Stifel Timo
• Adolf Manfred
• Wüstenhagen Dirk
• Schumm Sven

Classifications

• H01R13/53

  Bases or cases for heavy duty; Bases or cases {for high voltage} with means for preventing corona or arcing · CPC title

• H01F38/12 Primary

  Ignition, e.g. for IC engines · CPC title

• H01T13/04 Primary

  Means providing electrical connection to sparking plugs · CPC title

• F02P3/04

  Layout of circuits · CPC title

• F02P3/02

  having inductive energy storage, e.g. arrangements of induction coils {(ignition coils structurally combined with sparking plugs F02P13/00; constructional details of ignition coils H01F38/12)} · CPC title