Title:
点火プラグ
Document Type and Number:
Japanese Patent JP6864650
Kind Code:
B2
Abstract:
To provide an ignition plug that can simplify management in a manufacturing process for joining a ground electrode and a metal shell.SOLUTION: An ignition plug includes a cylindrical ground electrode, a cylindrical metal shell whose front end is connected to the rear end of the ground electrode, and a central electrode insulated and held inside the metal shell and ground electrode, and the front end of the metal shell is disposed on the outer peripheral side of the rear end of the ground electrode. The ground electrode includes a first projecting portion projecting radially outward at the rear end, and the metal shell includes a second projecting portion projecting radially inward at the front end. The front-facing surface facing the front end side of the first projecting portion and the rear-end facing surface facing the rear end side of the second projecting portion face each other, and the inner peripheral surface of the front end of the metal shell and the outer peripheral surface of the rear end of the ground electrode are bonded via a bonding member.SELECTED DRAWING: Figure 1
More Like This:
| JPS55111085 | IGNITION PLUG |
| JP2009544129 | Spark plug for high pressure combustion chamber |
Inventors:
Taichi Hayakawa
Application Number:
JP2018097527A
Publication Date:
April 28, 2021
Filing Date:
May 22, 2018
Export Citation:
Assignee:
Nippon Special Ceramics Co., Ltd.
International Classes:
H01T13/20; H01T13/32
Domestic Patent References:
| JP3205775A | ||||
| JP55164794U |
Attorney, Agent or Firm:
Patent Service Corporation Shinmei Century