| 摘要 |
PROBLEM TO BE SOLVED: To provide a membrane type gas meter with which it is possible to attach a valve from the lateral side of a distribution chamber easily and speed up assembly work.SOLUTION: A distribution chamber 37 has a pair of guide insertion holes 55 through which a valve guide part 53 for rotatably supporting each of the base end parts of a pair of valves is inserted, the pair of valves having an attachment-use open hole 79 formed in the base end part of each. The attachment-use open hole 79 is formed in a smaller diameter than the guide insertion holes 55 and has a notch in which a portion of the inner circumferential edge is cut out to the outer circumference of the base end part over the entire height in a narrower width than the diameter of the attachment-use open hole 79. A rotation support part projecting from the guide insertion hole 55 of the valve guide part 53 has a pair of recesses formed so as to mutually sink into the diametrical inside from the outer circumference so as to face each other in a narrower distance than the width of the notch over the entire height, and a projection extended outward of the attachment-use open hole 79 in radial direction from the axial tip and capable of passing through the guide insertion hole 55.SELECTED DRAWING: Figure 3 |
