| 摘要 |
PROBLEM TO BE SOLVED: To fix a cup stably regardless of its diameter by involving a slider which is screwed in a screw shaft, and advances and retreats by the forward/ backward rotation of the screw shaft, connecting a support arm to the slider directly or through a connecting member, and advancing and retreating of the slider for opening and closing. SOLUTION: The space between a slider 30 and the end part of a support arm 16 is connected by a connecting bar 26. Therefore, when the slider 30 advances, it pulls the end part of the support arm 16, so that the support arm opens. When the slider 30 is retreated, it pushes the end part of the support arm 16, so that the support arm 16 closes. If the screwing of a screw shaft 28 and the slider 30 is set in the retreating direction of the slider 30 in driving when a cup is mounted, the support arm 16 closes by driving a motor 11, therefore, the cup mounted on a cup mounting plate 34 is pressed against the cup supporting part 14 by the support arm 16 to be retained, thus it is possible to fix the cup stably.
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