PROBLEM TO BE SOLVED: To protect the top of the head of an infant and to smoothly slide a moving plate.SOLUTION: A cushion plate 3a is attached to the inward surface of a fixed plate 3. A slide material 8 is attached to each of the bottom surfaces of a vertical plate 4 and a holding piece 6 and is abutted on the upper surface of a base plate 1. The surface of the slide material 8 is formed into a recessed and projected shape in parallel to the sliding direction of the moving plate 7. As a sliding means, both side edges of the base plate 1 are formed into a projected arc shape on the cross sections, and parts 5a, 5a having recessed arc-shaped cross sections to be roughly in point contact with both side edges having the projected arc-shaped cross sections are formed on both side plates 5, 5.COPYRIGHT: (C)2011,JPO&INPIT【課題】 乳幼児の頭頂部を保護し、また移動板をスムーズに摺動できるようにする。【解決手段】 固定板3の内向面にクッション板3aを取り付ける。垂直板4および掴み片6の各底面にすべり材8を取り付けて台板1の上面に当接する。すべり材8の表面を移動板7の摺動方向と平行な凹凸形状にする。摺動手段として台板1の両側縁を断面凸弧状に形成するとともに、断面凸弧状の両側縁に略点接触する断面凹弧部5a、5aを両側板5、5に形成する。【選択図】 図1
