Seal member fixing structure, joint and fluid control device in fluid control device

摘要

Each passage member 3, 4, 9 has a required width, height and length, and fluid passages 13, 14, 17, 18 are provided at the center of the width. Two bolts 15 and 16 are used as coupling means. The female threads 36A, 36B, 42, 48 and the bolt insertion holes 34, 35, 40, 47 facing each other are respectively provided at both ends of the central portion of the width of each passage member 3, 4, 9. Yes. The upper bolt 15 is inserted into one of the passage members 3 and 4 and screwed into the female threads 36A and 36B of the other passage member 9. The lower bolt 16 is inserted into the other passage member 9 and screwed into the female threads 42 and 44 of the one passage member 3 and 4. The passage members are connected to each other by the upper and lower two bolts 15 and 16, thereby fixing the seal members 6 and 7.