PROBLEM TO BE SOLVED: To facilitate attachment of a sheet member in a dental chair.SOLUTION: A sheet member 30 is a sheet member 30 that can be attached to a backrest part 20 of a dental chair, and includes: a back surface sheet 32 against which a patient leans a hook-shaped part 331 projecting from the rear face of the back surface sheet 32 which is hooked on a hooking part 211 provided to the backrest part 20 by sliding the back surface sheet 32 along the backrest part 20 of the dental chair and an engagement part 312 provided at a position deviated from the hook-shaped part 331 on the rear face of the back surface sheet 32 which engages with a receiving part 212 provided to the backrest part 20 by being pressed from the back surface sheet 32 side to the backrest part 20 side.SELECTED DRAWING: Figure 9COPYRIGHT: (C)2017,JPO&INPIT【課題】歯科用チェアにおけるシート部材の装着を容易にする。【解決手段】シート部材30は、歯科用チェアの背もたれ部20に取り付け可能なシート部材30であって、患者が寄りかかる背面シート32と、背面シート32の裏面から突出し、背面シート32を歯科用チェアの背もたれ部20に沿ってスライドすることで背もたれ部20に設けられた引っ掛け部211に引っ掛けられる鉤状部331と、背面シート32の裏面における鉤状部331からずれた位置に設けられ、背面シート32側から背もたれ部20側に押圧されることで背もたれ部20に設けられた受け部212に係合する係合部312とを備える。【選択図】図9
