JPS648562U

JPS648562U -

Info

Publication number: JPS648562U
Application number: JP10431387U
Authority: JP
Priority date: 1987-07-07
Filing date: 1987-07-07
Publication date: 1989-01-18

Description

[Brief explanation of the drawing]

図面はこの考案の一実施例を示すもので、第１
図は気化器の縦断面図、第２図は全閉位置にある
状態のスロツトルバルブの半断面図、第３図は第
２図の−線断面図、第４図は全開位置にある
状態のスロツトルバルブの断面図、第５図はスロ
ツトルバルブの外軸を示す半断面図、第６図は第
５図の−線断面図、第７図はスロツトルバル
ブの内軸を示す正面図、第８図は他の実施例を示
すスロツトルバルブの外軸の半断面図、第９図は
第８図の−線断面図である。１……気化器本体、２……吸気通路、４……ス
ロツトルバルブ、５……弁軸、６……内軸、７…
…外軸、８……燃料通路、１６，１７……空気流
入口、１８，１９……燃料吐出口、２１……燃料
供給窓。 The drawing shows one embodiment of this invention.
The figure is a longitudinal sectional view of the carburetor, Figure 2 is a half-sectional view of the throttle valve in the fully closed position, Figure 3 is a sectional view taken along the - line in Figure 2, and Figure 4 is the throttle valve in the fully open position. Figure 5 is a half-sectional view showing the outer axis of the throttle valve, Figure 6 is a cross-sectional view taken along the - line in Figure 5, and Figure 7 is a front view showing the inner axis of the throttle valve. 8 is a half sectional view of the outer shaft of a throttle valve showing another embodiment, and FIG. 9 is a sectional view taken along the line -- in FIG. 8. DESCRIPTION OF SYMBOLS 1... Carburetor body, 2... Intake passage, 4... Throttle valve, 5... Valve shaft, 6... Inner shaft, 7...
... Outer shaft, 8 ... Fuel passage, 16, 17 ... Air inlet, 18, 19 ... Fuel discharge port, 21 ... Fuel supply window.

Claims

[Scope of utility model registration request]

In a carburetor that discharges fuel from a valve stem of a throttle valve that is disposed in an intake passage so as to be openable and closable, the throttle valve has a substantially rhombic cross-section with a thick wall around the valve stem. , the valve shaft includes an inner shaft that has a fuel passage leading to a fuel supply source in the center and is fixedly disposed on the carburetor body, and an inner shaft that is integrated with the throttle valve around the axis of the inner shaft. and a hollow outer shaft that is rotatably fitted into the throttle valve. When the throttle valve is closed, the outer shaft and the throttle valve have a center hole in the outer shaft that is inserted into the throttle valve. A predetermined number of air inlets that open toward the upstream side are provided, and a predetermined number of fuel discharge ports that open toward the downstream side of the throttle valve are arranged in the axial direction of the outer shaft. A communication path is formed between the center hole of the outer shaft and the outer circumferential surface of the inner shaft, and the air inlet is connected to the fuel discharge port, and the fuel passage is connected to the fuel discharge port in the inner shaft. A fuel supply window that communicates with the outlet is opened, and the fuel supply window is a substantially platform that gradually increases the opening area of the fuel discharge port as the throttle valve is opened from a fully closed position to a fully open position. A vaporizer characterized by being formed into a shape.