FASTENING DEVICE, AND WATER CUTOFF DEVICE

To provide a fastening device capable of fixing a fixing member to a support member without providing a bolt to be inserted into the support member to fix or a bolt receiving portion, in the fixing member.SOLUTION: A fastening device 3 comprises: first and second fixing members 5, 6 which include first and second engaged portions 5c, 6c and in which storage spaces respectively storing storage members 29, 30 holding an end portion of a membrane body 2 are formed, as separate bodies; a cover 8 which presses the first and second fixing members 5, 6 in a state where the storage members 29, 30 are stored in at least one of the first and second fixing members 5, 6; and an operation member 7 which has a wedge portion 33. Since the operation member 7 is operated in a state where the wedge portion 33 is disposed between the first and second fixing members 5, 6, the first and second fixing members 5, 6 are moved in an opposite direction to each other by the wedge portion 33. The first and second engaged portions 5c, 6c are respectively engaged with first and second engagement portions 4c, 4d of a support member 10.SELECTED DRAWING: Figure 2 【課題】支持部材に差し込んで固定するためのボルトやボルト受け部を固定部材に設けなくても、固定部材を支持部材に固定することができる定着装置を提供することである。【解決手段】定着装置３は、第１及び第２被係止部５ｃ、６ｃを有する一方で、膜体２の端部を保持する収納部材２９、３０をそれぞれ収納する収納空間が形成された別体の第１及び第２固定部材５、６と、第１及び第２固定部材５、６の少なくとも一方に収納部材２９、３０が収納された状態で第１及び第２固定部材５、６を押えるカバー８と、楔部３３を有する操作部材７と、を備える。操作部材７は、楔部３３が第１及び第２固定部材５、６の間に配置された状態で操作されることにより、楔部３３によって第１及び第２固定部材５、６を互いに反対向きに移動させ、第１及び第２被係止部５ｃ、６ｃがそれぞれ支持部材１０の第１及び第２係止部４ｃ、４ｄに係止される。【選択図】図２