| 发明名称 |
METHOD FOR INSPECTING INSULATOR FOR SPARK PLUG |
| 摘要 |
A method for inspecting an insulator for a spark plug to determine whether or not the insulator has a defect, the spark plug extending in an axial direction, includes a voltage applying step of applying a voltage between a first electrode disposed in an axial hole in the insulator and a second electrode disposed near an outer peripheral surface of the insulator. The voltage applying step is performed while a gap between a front end of the first electrode and an inner peripheral surface of the insulator that faces the front end of the first electrode in a radial direction is filled with a first insulating material without leaving a hollow space. |
| 申请公布号 |
US2016223604(A1) |
申请公布日期 |
2016.08.04 |
| 申请号 |
US201615008740 |
申请日期 |
2016.01.28 |
| 申请人 |
NGK SPARK PLUG CO., LTD. |
发明人 |
HIROSE Kazumichi;HASHIGUCHI Yoshiaki;NAKAMA Shou |
| 分类号 |
G01R31/12;H01T13/60 |
主分类号 |
G01R31/12 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for inspecting an insulator for a spark plug to determine whether or not the insulator has a defect, the spark plug extending in an axial direction, the method comprising:
a voltage applying step of applying a voltage between a first electrode disposed in an axial hole in the insulator and a second electrode disposed near an outer peripheral surface of the insulator, wherein the voltage applying step is performed while a gap between a front end of the first electrode and an inner peripheral surface of the insulator that faces the front end of the first electrode is filled with a first insulating material without leaving a hollow space. |
| 地址 |
Nagoya-shi JP |
