| 摘要 |
A part (18c) according to the invention has a plurality of abutment portions (71a, 71b and 71c) which come into abutment with an upper-side part in a guide (76) and support the upper-side part, and a plurality of receiving portions (72a, 72b and 72c) with which a plurality of abutment portions provided on a lower-side part in the guide are brought into abutment. The center of gravity of the part is disposed inside a region surrounded by the plurality of abutment portions. Accordingly, it is possible to convey parts to an assembly line without causing damage to the regions of the parts that are required to have dimensional precision.
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