JPS6066854U

JPS6066854U - Sealing device for carburetor choke valve shaft

Info

Publication number: JPS6066854U
Application number: JP15959983U
Authority: JP
Inventors: 小坂　信明
Original assignee: 愛三工業株式会社
Priority date: 1983-10-15
Filing date: 1983-10-15
Publication date: 1985-05-11

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例の断面図、第２図　゛はそ
のチョーク弁軸の操作装置の側面図１．第３図は本考案
の第２実施例の要部概要図、第４図は第３図Ａ−Ａ線に
沿う断面図、第５図は本考案の第３実施例の要部概要図
、第６図は第５図Ｂ−Ｂ線に沿う断面図をそれぞれ示す
ものである。なお図中、２は気化器基体、３は気化器吸気通路、１１
はチョーク弁軸、２１は第１の軸端部、２２はその段部
、２３はその大径軸部、４２は第２の軸端部、１２は第
１の軸受孔、２４はその段部、２５はその大径孔部、１
３は第２の軸受孔、４３は牽引ロンド、４５はダイアフ
ラムをそれぞれ示すものである。FIG. 1 is a sectional view of the first embodiment of the present invention, and FIG. 2 is a side view of the choke valve shaft operating device. FIG. 3 is a schematic diagram of the main parts of the second embodiment of the present invention, FIG. 4 is a sectional view taken along the line A-A in FIG. 3, and FIG. 5 is a schematic diagram of the main parts of the third embodiment of the present invention. 6 is a sectional view taken along the line B--B in FIG. 5, respectively. In the figure, 2 is the carburetor base, 3 is the carburetor intake passage, and 11
is a choke valve shaft, 21 is a first shaft end, 22 is a stepped portion thereof, 23 is a large diameter shaft portion thereof, 42 is a second shaft end, 12 is a first bearing hole, and 24 is a stepped portion thereof. , 25 is its large diameter hole, 1
3 is a second bearing hole, 43 is a traction iron, and 45 is a diaphragm.

Claims

[Scope of utility model registration request]

(1) A cylindrical first bearing hole and a second cylindrical bearing hole are formed in the carburetor base and open toward the intake passage at a position upstream of the main nozzle of the intake passage formed in the carburetor base.
a choke valve that is rotatably supported by loosely fitting both ends of a choke valve shaft into the bearing hole, a choke valve body is eccentrically fixed to the choke valve shaft, and the choke valve is fitted into the first bearing hole. A stepped portion is formed at the first shaft end of the shaft, and the tip portion is formed into a larger diameter shaft portion than the stepped portion. A step portion corresponding to the step portion is formed on the intake passage side, and a large-diameter hole portion is formed from the step portion to the outer surface of the carburetor base, and the tip of the large-diameter shaft portion of the first shaft end portion is formed. is made to protrude outside of the carburetor base, a lever for operating the choke valve shaft is fixed to the tip of the large diameter shaft, and a lever for operating the choke valve shaft is fixed to the second shaft end of the choke valve shaft that is inserted into the second bearing hole. connects one end of the traction rod so that it can freely rotate coaxially with the center axis of the choke valve shaft and with almost no mutual sliding in the direction of the center axis, and connects the periphery of the rod to the inside of the second bearing hole. A carburetor characterized in that the other end of the traction rod is hermetically fixed to the center of a diaphragm that is hermetically fixed to a peripheral wall, and atmospheric pressure is applied to the surface of the diaphragm that faces the outside of the carburetor base. Seal device for choke valve stem.

(2) Between the stepped portion formed on the first shaft end and the stepped portion formed in the first shaft hole corresponding to the stepped portion, there is a space that fits into the first shaft end. A sealing device for a choke valve shaft of a carburetor as claimed in claim 1, characterized in that an annular gasket is interposed therebetween, and the two stepped portions are brought into pressure contact via the gasket.