| 摘要 |
PURPOSE: To provide an oxygen sensor structure in which the deformation or damage of a metal cylinder due to flying stone can be suppressed to the minimum. CONSTITUTION: The oxygen sensor 1 is so mounted at its outer cylinder 39 at a main body fitting 29 as to cover an inner cylinder 33, a ceramic separator 35, and the outside of a waterproof sealing member 37. The cylinder 39 is formed out of a first cylindrical part 39H1 of the end side having a thickness of 1mm or less, a first stepped part 39D1 bent at about 45 deg. to the part 39H1, a second cylindrical part 39H2 of the center side, a second stepped part 39D2 bent substantially perpendicularly to the part 39H2, and a third cylindrical part 39H3 of the rear end side. The cylinder 39 is welded over the entire outer periphery to the fitting 29 on the lower end side of the part 39H1 having the largest diameter. It is radially clamped by the part 39H3 having the smallest diameter. |
