COMBUSTION PRESSURE SENSOR, COMBUSTION PRESSURE SENSOR USED ALSO AS GLOW PLUG, MANUFACTURING METHOD OF COMBUSTION PRESSURE SENSOR AND MANUFACTURING METHOD OF COMBUSTION PRESSURE SENSOR USED ALSO AS GLOW PLUG

摘要

PROBLEM TO BE SOLVED: To provide a combustion pressure sensor of which a connection member and a housing are firmly welded together, and further to provide a combustion pressure sensor used also as a glow plug, a manufacturing method of the combustion pressure sensor and a manufacturing method of the combustion pressure sensor used also as a glow plug. ! SOLUTION: A combustion pressure sensor 1 comprises: a cylindrical housing 100 extending in an axial direction DX; a displacement member 130 disposed inside the housing 100; and a cylindrical connection member 160 for elastically coupling the displacement member 130 to the housing 100. The combustion pressure sensor 1 has a housing welded portion W1 being obtained by annularly energy beam welding the housing 100 and the connection member 160 in a circumferential direction while spacing the housing 100 and the connection member 160 apart from each other in at least parts of circumferential directions thereof and including a form that a part of the housing 1