| 摘要 |
PURPOSE:To contrive to slide, guide and retain the vacuum operating valve of the constant vacuum type carburettor, equipped with the vacuum operating valve by projecting a plate-like guide part from the side of a venture forming part, simply and surely by the main body of the carburettor. CONSTITUTION:The recess 3 of an atmosphere chamber is provided at one side of a suction path 2 while a guide groove 6 is bored from the upper opening of the recess 3 of the atmosphere chamber. A guide chamber 7 is provided with a L-shaped guide groove, guiding and retaining the other side of the plate-like guide part 17B of the vacuum operating valve 17, and a semi-circular venturi forming part guide groove 7B, sliding guiding and retaining the other side of the venturi forming part 17A of the vacuum operating valve 17, on the one surface thereof. A cylindrical guide hole, sliding, guiding and retaining the venturi forming part 17A of the vacuum operating valve 17 by a venturi forming part guide 6A and the semicircular venturi forming part guide groove 7B, is formed. |
