Patent ID: 7121144
Filing Date: 2006-10-17
Classification: G01L

Abstract:
1. A pressure sensor comprising: a connector case having an upper end and a bottom end, a depressed portion being formed on the bottom end; a housing having a mounting surface, the housing being firmly connected to the connector case so that the mounting surface faces the bottom end of the connector case, thereby forming a unitary body of a sensor casing; a ring plate mounted on and connected to the mounting surface of the housing; a pushing plate contacting the bottom end of the connector case; a metal diaphragm responsive to pressure applied thereto, an outer peripheral portion of the metal diaphragm being sandwiched between the ring plate and the pushing plate, wherein the ring plate, the pushing plate and the outer peripheral portion of the metal diaphragm are firmly connected to one another; a pressure-detecting chamber formed in the depressed portion of the connector case, confined by the metal diaphragm; and a sensing element disposed in the pressure-detecting chamber so that pressure applied to the metal diaphragm is detected by the sensing element.