METHOD FOR ASSEMBLING GAS SENSOR, DEVICE FOR ASSEMBLING GAS SENSOR, METHOD FOR ANNULARLY MOUNTING MEMBER TO BE ANNULARLY MOUNTED, AND METHOD FOR ANNULARLY MOUNTING CYLINDRICAL BODY

摘要

Provided is a method and a device which are capable of reliably assembling a gas sensor even when there is a warp in a sensor element. A holding step of entering an upper side held state in which while the lower end of a sensor element is inserted in a recess of a holding stand, the sensor element is held such that the upper end thereof is along a vertical direction, a fitting step of fitting a through-hole of a member to be annularly mounted on the upper end of the sensor element that has been brought into the upper side held state, and a switching step of causing the member to be annularly mounted to arrive at a predetermined annular mounting position by switching from the upper side held state to a lower side held state in which the sensor element is held such that the lower end thereof is along the vertical direction are repeated with respect to a plurality of members to be annularly mounted to thereby obtain an intermediate assembly, thereafter the intermediate assembly is clamped sideways by a centering means, and after the outer diameter thereof is minimized, a cylindrical body is annularly mounted around the intermediate assembly.