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US 2006/0132271 A1Published application
Ignition coil
AssigneeDenso Corporation
InventorsShouichi Takeyama, Kazuhide Kawai
Life of this patent
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Abstract
An ignition coil includes a cylindrical portion capable of being inserted into a plughole of an engine case. The cylindrical portion has a base end and a tip end, respectively, in an axial direction of the cylindrical portion. The cylindrical portion has an elastically deformable outer peripheral portion that engages with the plughole to fix an outer periphery of the cylindrical portion with respect thereto.
Claims13
An ignition coil comprising:
- a cylindrical portion that includes a primary coil and a secondary coil, the secondary coil being wound coaxially with respect to the primary coil;
- wherein the cylindrical portion is capable of being inserted into a plughole of an engine case of an internal combustion engine,
- the cylindrical portion has a base end in an axial direction of the cylindrical portion,
- the base end of the cylindrical portion has a built-in connector head portion that supplies the primary coil with electric power,
- the cylindrical portion has an elastically deformable outer peripheral portion, and
- the outer peripheral portion changes an outer diameter thereof when the outer peripheral portion fits to the plughole, whereby the cylindrical portion is fixed to the plughole.
3 more elements
An ignition coil comprising:
- a cylindrical portion that includes a primary coil and a secondary coil, the secondary coil being wound coaxially with respect to the primary coil,
- wherein the cylindrical portion is capable of being inserted into a plughole of an engine case of an internal combustion engine;
- the cylindrical portion has a base end and a tip end, respectively, in an axial direction of the cylindrical portion,
- the base end of the cylindrical portion has a built-in connector head portion that supplies the primary coil with electric power,
- the cylindrical portion has a tapered portion on an outer periphery thereof,
- the tapered portion has a shape, in which a thickness thereof reduces to the tip end of the cylindrical portion, and
- the tapered portion of the cylindrical portion is capable to fit to an opening edge of the plughole, whereby the cylindrical portion is fixed to the plughole.
4 more elements
Dependencies are inferred from the claim text.