| 摘要 |
A pair of open/close shafts (30) raised on a container holding part (20) has a pair of driving grip arms (31A) that are opened and closed via the open/close shafts (30), and a pair of floating grip arms (31B) pivotally supported by the open/close shafts (30). A grip spring (39) is connected so as to bias the floating grip arms (31B) in a closing direction that brings the floating grip arms (31B) close to each other. The driving grip arms (31A) each include a closing movement restriction rod (38A) that restricts only a closing movement of the floating grip arms (31B). Thus, a container can be stably held by the driving grip arms (31A) and the floating grip arms (31B) in vertical stages in a simple structure. |
