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 are a method and an apparatus capable of reliably assembling a gas sensor even in a case where a sensor element warps. A plurality of annular mounting members are repeatedly subjected to: a holding step of bringing a sensor element into an upper-side held state in which the sensor element is held such that an upper end thereof extends vertically with a lower end thereof being inserted into a recess; a fitting step of fitting a through hole of an annular mounting member with the upper end of the sensor element brought in to the upper-side clamped state; and a switching step of 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 extends vertically, to thereby cause the annular mounting member to reach a predetermined annularly mounting position. As a result, an intermediate assembly product is obtained. Then, the intermediate assembly product is sandwiched from its sides by centering means to minimize the outside diameter thereof, and thereafter, a tubular body is annularly mounted to the intermediate assembly product.