| 摘要 |
To improve the efficiency of assembling multiple on-off valves into a manifold body and reduce resistance to rotation of a shaft after assembly, frame members (3) are fitted in downstream end portions of individual intake passage sections (12) of a manifold body (2), on-off valves (4) are placed inside the individual frame members (3) and a shaft (5) is passed through the on-off valves (4) in such a way that the frame members (3) constitute parts of inside walls of intake passages where the on-off valves (4) are located, the frame members (3) rotatably supporting the on-off valves (4) and the shaft (5). A cutout (23) is formed in a surrounding wall of each frame member (3), thereby making each frame member (3) expandable and compressible by elastic deformation. Protruding walls (24) swelling outward on both sides of the cutout (23) are formed on each frame member (3), and a recessed part (26) for accommodating the protruding walls (24) is formed in a wall surface of each intake passage section (12) of the manifold body (2). Further, there is formed a guide rail (27) which fits in the cutout (23) in the recessed part (26).
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