| 主权项 |
1. A model comprising:
a first part including a rotational shaft portion; and a second part including a shaft supporting portion configured to accept the rotational shaft portion, wherein the rotational shaft portion, if inserted into the shaft supporting portion, is supported by the shaft supporting portion in such a manner as to be rotatable and to be movable in an axial direction of the rotational shaft portion, the second part being connected to the first part in such a manner as to be rotatable relative to the first part, wherein one of the first part and the second part includes a projecting portion while the other includes a recessed portion configured to engage the projecting portion if the rotational shaft portion is inserted further into the shaft supporting portion, the rotation of the second part relative to the first part being stopped if the projecting portion is engaged with the recessed portion, and wherein the rotational shaft portion and the shaft supporting portion include respective locking members that are engageable with each other, the locking members limiting the movement of the rotational shaft portion in the axial direction within a range between a first position where the projecting portion is engaged with the recessed portion and a second position where the projecting portion is not engaged with the recessed portion. |
