JPH0185448U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view showing one embodiment of a rotary throttle valve type carburetor according to the present invention, and FIG. 2 is a longitudinal cross-sectional view showing another example. 13...Fuel nozzle, 13A...Fuel control passage, 17...Needle, 18...Holder, 19...
...adjustment screw, 21...connection member.

Claims (1)

[Claims for Utility Model Registration] A carburetor main body 10 in which an intake passage 11 passes through, and a cylindrical throttle valve guide cylinder 12 is perforated substantially orthogonally to the intake passage 11 and across the intake passage 11. ; A fuel control passage 13A is provided upright in the intake passage 11 from the bottom of the throttle valve guide cylinder 12, and one end of the fuel control passage 13A passing through the inside is connected to the fuel passage 14, and the fuel is opened into the intake passage 11 from the fuel control passage 13A. A fuel nozzle 13 having a control hole 13B; a shaft portion 15A surrounded by a fuel well hole 15B having a gap S on the outer periphery of the fuel nozzle 13 and opening at least into the intake passage 11;
plate-shaped throttle valve parts 15C and 15D that extend laterally to control the opening and closing of the intake passage 11; and a through hole bored in the shaft part 15A to communicate the gap S of the fuel nozzle 13 and the intake passage 11. 15G, 15H, and bearing parts 15E, 15F which are located at both the upper and lower ends of the shaft part 15B and are rotatably fitted into the throttle valve guide cylinder 12,
A throttle valve lever part 15J that is above the bearing part 15F and protrudes from the carburetor main body 10, and a holder fitting hole 1 are provided below the bearing part 15E side from the upper opening of the cylinder body 15K that is connected above the throttle valve lever part 15J.
5M and a control protrusion 15P that is formed in a continuous manner with the needle fitting hole 15N and protrudes laterally from the opening of the holder fitting hole 15M; fitting the throttle body 15 into the holder; The throttle body 15 is movably arranged in the hole 15M.
a holder 18 having a cam part 18B and a locking protrusion 18C corresponding to the control protrusion 15P; movably arranged in the needle fitting hole 15N of the throttle body 15, one end of which is connected to the fuel nozzle 13;
Needle 1 inserted into fuel control passage 13A of
7; an upper lid body 16B disposed on the open end of the throttle valve guide cylinder 12 of the carburetor body 10 and covering the vicinity of the upper part of the cylinder body 15K of the throttle body 15;
a cover 16 having a locking step portion 16F that stands upright below 6B and prevents rotation of the holder 18 in response to a locking protrusion 18C of the holder 18; an adjusting screw 19 protruding toward the 17 side; a protruding portion of the adjusting screw toward the needle side and an end portion of the needle facing the adjusting screw;
Rotation formed by connecting the adjusting screw with a connecting member made of an elastic material that moves integrally in the direction of the longitudinal axis of the needle and can elastically move in a direction substantially orthogonal to the longitudinal axis. Throttle valve type vaporizer. The rotary throttle valve type carburetor according to claim 1, wherein the connecting member is made of a rubber material. 2. The rotary throttle valve type carburetor according to claim 1, wherein the connecting member is a coil spring and is compressed on the lower surface of a flange provided on the needle.