JPH0292690U - - Google Patents
Info
- Publication number
- JPH0292690U JPH0292690U JP63389U JP63389U JPH0292690U JP H0292690 U JPH0292690 U JP H0292690U JP 63389 U JP63389 U JP 63389U JP 63389 U JP63389 U JP 63389U JP H0292690 U JPH0292690 U JP H0292690U
- Authority
- JP
- Japan
- Prior art keywords
- insulator
- leg
- head
- rear end
- ceramic
- 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.)
- Pending
Links
- 239000012212 insulator Substances 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims 1
- 238000002788 crimping Methods 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
Landscapes
- Spark Plugs (AREA)
Description
第１図は本考案にかかる分割絶縁体を用いたス
パークプラグの一実施例を示す部分断面図である
。第２図は本考案品および比較品の、それぞれの
接合位置を示す説明図である。第３図は本考案品
と比較品との耐プレイグニツシヨン試験を示すグ
ラフである。
図中、１……主体金具（筒状主体金具）、２…
…絶縁体（棒状絶縁体）、３……中心電極、４…
…脚長部絶縁体、５……コルゲーシヨン部絶縁体
（頭部絶縁体）、６……高融点ガラス（接合材料
）、１０……後端部、１２……パツキン接触面（
内周段）、１６……上側線パツキン（かしめリン
グ）、２１……軸孔、４１……凸部、５１……凹
部、Ａ……分割絶縁体を用いたスパークプラグ、
Ｆ……接合位置（外側接触面）。
FIG. 1 is a partial sectional view showing an embodiment of a spark plug using a split insulator according to the present invention. FIG. 2 is an explanatory diagram showing the joint positions of the inventive product and the comparative product. FIG. 3 is a graph showing a preignition resistance test of a product of the present invention and a comparative product. In the figure, 1...metal shell (cylindrical metal shell), 2...
...Insulator (rod-shaped insulator), 3... Center electrode, 4...
... Leg length insulator, 5 ... Corrugation part insulator (head insulator), 6 ... High melting point glass (bonding material), 10 ... Rear end, 12 ... Packing contact surface (
(inner circumferential stage), 16... Upper wire packing (caulking ring), 21... Shaft hole, 41... Convex portion, 51... Concave portion, A... Spark plug using split insulator,
F...Joining position (outer contact surface).
Claims (1)
に形成された脚長部、および前記胴部の後方に位
置する頭部からなる軸孔付き棒状絶縁体と、 該絶縁体の軸孔に嵌め込まれる中心電極と、 前記絶縁体が嵌め込まれ、前記テーパ面に係合
する内周段、およびかしめリングが内装されると
ともに内方にかしめられる後端部により前記絶縁
体を固定する筒状主体金具と、 を具備してなるスパークプラグにおいて、 前記絶縁体は、熱伝導率が６０Ｗ／ｍ・ｋ以上
の窒化アルミニウムを主体とするセラミツクで形
成され、 後端部外径が径小の凸部を有する脚長部絶縁体
と、先端部に、前記脚長部絶縁体の後端が嵌まり
込む凹部を有する、アルミナを主体とするセラミ
ツク焼結体で形成された筒状の頭部絶縁体と、前
記脚長部絶縁体と頭部絶縁体との接合部に介在さ
れるとともに、ガラス質あるいはセラミツク質か
らなる接合材料とにより構成され、 前記頭部絶縁体の先端、および脚長部絶縁体の
後端が接する外側接触面は、前記かしめリングと
、前記主体金具の内周段との間に位置する ことを特徴とする分割絶縁体を用いたスパーク
プラグ。[Claims for Utility Model Registration] A rod-shaped insulator with a shaft hole consisting of a large-diameter body, a long leg portion formed with a small diameter in front of the body through a tapered surface, and a head located at the rear of the body. a center electrode fitted into the shaft hole of the insulator; an inner circumferential stage into which the insulator is fitted and engages with the tapered surface; and a rear end section in which a crimping ring is installed and crimped inward. A spark plug comprising: a cylindrical metal shell for fixing the insulator; the insulator is made of ceramic mainly made of aluminum nitride and has a thermal conductivity of 60 W/m·k or more; It is formed of a ceramic sintered body mainly made of alumina, the leg insulator having a convex portion with a small outside diameter, and the tip having a recess into which the rear end of the leg insulator fits. It is composed of a cylindrical head insulator and a bonding material made of glass or ceramic that is interposed at the joint between the long leg insulator and the head insulator, and the tip of the head insulator , and an outer contact surface with which the rear end of the leg insulator comes into contact is located between the caulking ring and the inner circumferential stage of the metal shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63389U JPH0292690U (en) | 1989-01-06 | 1989-01-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63389U JPH0292690U (en) | 1989-01-06 | 1989-01-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0292690U true JPH0292690U (en) | 1990-07-23 |
Family
ID=31199833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63389U Pending JPH0292690U (en) | 1989-01-06 | 1989-01-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0292690U (en) |
-
1989
- 1989-01-06 JP JP63389U patent/JPH0292690U/ja active Pending
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