JP2013149623A5

JP2013149623A5 -

Info

Publication number: JP2013149623A5
Application number: JP2013047688A
Authority: JP
Filing date: 2013-03-11
Publication date: 2014-08-28

Description

本発明は、上述の課題の少なくとも一部を解決するために、以下の形態または適用例を取ることが可能である。
［形態１］
軸線方向に延びる筒状の主体金具と、
前記主体金具の外周に設けられた環状のガスケットと、を備えたスパークプラグであって、
前記ガスケットは、中実であるとともに、主成分が銅であり、かつ、ニッケルを０．１０重量％以上含み、
前記ガスケットの前記軸線方向における最大の厚さは、０．４ｍｍ以上であり、
前記ガスケットは、焼き鈍されることにより、ビッカース硬さを、３０ＨＶ以上１５０ＨＶ以下にされたことを特徴とする、スパークプラグ。
［形態２］
上記形態のスパークプラグであって、
前記ガスケットは、前記軸線方向に沿った方向から当該ガスケットが押し潰されることによって当該ガスケットの内周部に形成された突出部または前記軸線方向に沿った方向から当該ガスケットが押し潰されることによって形成された溝部を有し、
前記突出部または前記溝部の前記軸線方向における最小の厚さは、０．２ｍｍ以上であることを特徴とする、スパークプラグ。 In order to solve at least a part of the problems described above, the present invention can take the following forms or application examples.
[Form 1]
A cylindrical metal shell extending in the axial direction;
A spark plug provided with an annular gasket provided on the outer periphery of the metal shell,
The gasket is solid, the main component is copper, and contains 0.10% by weight or more of nickel,
The maximum thickness in the axial direction of the gasket is 0.4 mm or more,
The spark plug is characterized by having a Vickers hardness of 30 HV or more and 150 HV or less by annealing.
[Form 2]
A spark plug of the above form,
The gasket is formed by the gasket being crushed from the direction along the axial direction, or the gasket is crushed from the protruding portion formed on the inner peripheral portion of the gasket or the direction along the axial direction. Having a groove formed,
The spark plug according to claim 1, wherein a minimum thickness of the protruding portion or the groove portion in the axial direction is 0.2 mm or more.

Claims

A cylindrical metal shell extending in the axial direction;
A spark plug provided with an annular gasket provided on the outer periphery of the metal shell,
The gasket is solid, the main component is copper, and contains 0.10% by weight or more of nickel,
The maximum thickness in the axial direction of the gasket is 0.4 mm or more,
The spark plug is characterized by having a Vickers hardness of 30 HV or more and 150 HV or less by annealing.

The spark plug according to claim 1,
The spark plug is characterized in that the gasket further contains 0.01 wt% or more and 0.50 wt% or less of phosphorus.

The spark plug according to claim 1 or 2, wherein
The spark plug is characterized in that the gasket further contains 0.30 wt% or more and 11.00 wt% or less of tin.

The spark plug according to any one of claims 1 to 3,
The gasket includes one or more elements including at least nickel among the three elements of nickel, phosphorus, and tin,
The spark plug according to claim 1, wherein the total of the three elements is 2.00% by weight or less.

The spark plug according to any one of claims 1 to 4, wherein
The spark plug according to claim 1, wherein an area of a surface of the gasket that contacts the metal shell is 111 mm ² or less.

  The spark plug according to any one of claims 1 to 5,
  The gasket is formed by the gasket being crushed from the direction along the axial direction, or the gasket is crushed from the protruding portion formed on the inner peripheral portion of the gasket or the direction along the axial direction. Having a groove formed,
  The spark plug according to claim 1, wherein a minimum thickness of the protruding portion or the groove portion in the axial direction is 0.2 mm or more.