| 摘要 |
A method for manufacturing a gas sensor is provided. Said method includes a placement step (S1), a heating/melting step (S2), and a sealing step (S3). In the placement step (S1), a sensor element (10) is placed inside (22) an insulator (20), and a molded glass body (30) is placed in a sealing-glass accommodation section (21) formed in the insulator (20). In the heating/melting step (S2), the molded glass body (30) is melted by the application of heat. In the sealing step (S3), the melted molded glass body (30) is cooled, forming sealing glass (3) that seals the space between the sensor element (10) and the insulator (20) in the sealing-glass accommodation section (21). A sloped section (36) is formed in a region of the molded glass body (30) that extends at least 0.3 mm towards the center (34) of the molded glass body (30) from the outside edge (3) of the tip (31) of the molded glass body (30). Said sloped section (36) is sloped towards the base (32) of the molded glass body (30) with increasing distance from the center (34) thereof. In the abovementioned placement step (S1), the molded glass body (30) is inserted into the sealing-glass accommodation section (21) such that the tip (31) of the molded glass body (30) enters said sealing-glass accommodation section (21) first. |
