Patent ID: 9068549
Filing Date: 2015-06-30
Classification: F02P,F23Q,G01L,G01M

Abstract:
1. A glow plug with a pressure sensor comprising: a housing in a cylindrical shape that is extended in a direction of an axis line; a heater unit in a rod shape that has a rear end part placed in the housing and a front end part protruded from a front end of the housing and is movable along the direction of the axis line; a coupling member in a thin film shape that is connected at one end with the housing and at the other end with the heater unit and is configured to enable the heater unit to move along the direction of the axis line and couple the heater unit with the housing; and a pressure sensor that detects a pressure based on a load transmitted via the heater unit, wherein the coupling member includes: the first bend is located closer in a direction orthogonal to the axis line to the housing than the second bend and is located closer in the direction of the axis line to a front end side of the housing than the second bend, and the first bend has a greater bend radius than a bend radius of the second bend.