| 摘要 |
PROBLEM TO BE SOLVED: To provide a pillow position retaining device and an otolaryngologic treatment chair which operate connected arms individually and stop motions of the arms simultaneously and which thereby can arrange a pillow part at an arbitrary position.SOLUTION: A pillow position retaining device 10 is configured to include: a pillow 2 movable with respect to a back rest 1 of a chair; a movable first arm 11 connected to the back rest 1 side; a movable second arm 12 connected to the movable first arm 11 and connected to the pillow 2; a first lock 27 for stopping motions of the movable first arm 11; a second lock 28 for stopping motions of the movable second arm 12; an eccentric shaft 42 for interlocking the first lock 27 and the second lock 28 simultaneously; and a cylinder 44 for interlocking the eccentric shaft 42.SELECTED DRAWING: Figure 4 |
