| 摘要 |
PROBLEM TO BE SOLVED: To suppress or prevent the problem that wax for brazing an annular member spreads to deposit on a rear end surface or a front end surface of the annular member, in a sensor where the annular member is brazed to a tube and is pressed to a seat surface at the depth of a screw hole by screwing a hollow bolt member being another component, into the screw hole and thereby is attached with secured sealability.SOLUTION: A chamfered or recessed cut part 37 is formed at one of corners formed between an inner peripheral surface 32a of an annular member 31 and a front end surface 33 or a rear end surface 35 of the annular member 31 along an inner periphery. When the annular member is brazed, the annular member 31 is fitted to a tube 11 with the cut part 37 up and is stood, and a brazing material 220 is located in the cut part 37 or its neighborhood and is melted. Thereby, a recessed groove formed of the cut part 37 serves as a wax reservoir, and spreading and deposition of the wax onto the front end surface 33 or the rear end surface 35 can be suppressed due to the existence of the cut part 37. |
