JPH02131078U

JPH02131078U -

Info

Publication number: JPH02131078U
Application number: JP3999689U
Authority: JP
Priority date: 1989-04-06
Filing date: 1989-04-06
Publication date: 1990-10-30

Description

[Brief explanation of the drawing]

第１図は本考案に係る内燃機関の補助空気流量
制御弁の一実施例を示す断面図、第２図は同上実
施例における回動軸端部の構造を示す斜視図、第
３図は同上の回動軸端部へのヘリカルバイメタル
固定状態を示す斜視図、第４図は従来の補助空気
流量制御弁の一例を示す断面図、第５図は同上従
来例における回動軸端部へのヘリカルバイメタル
固定状態を示す斜視図である。２１……補助空気通路、２２……空気通路、２
３……開閉弁、２６……回動軸、２７……弁体、
２８……ハウジング、２９……ヘリカルバイメタ
ル、３７……ヘリカルバイメタル挿入用割り溝、
３８……薄肉板形状部分。 Fig. 1 is a sectional view showing an embodiment of the auxiliary air flow control valve for an internal combustion engine according to the present invention, Fig. 2 is a perspective view showing the structure of the rotating shaft end in the above embodiment, and Fig. 3 is the same as above. FIG. 4 is a cross-sectional view showing an example of a conventional auxiliary air flow control valve, and FIG. FIG. 3 is a perspective view showing a helical bimetal fixed state. 21... Auxiliary air passage, 22... Air passage, 2
3... Opening/closing valve, 26... Rotating shaft, 27... Valve body,
28... Housing, 29... Helical bimetal, 37... Helical bimetal insertion groove,
38... Thin plate shaped part.

Claims

[Scope of utility model registration request]

A control valve is provided in an auxiliary air passage that bypasses a throttle valve in an engine intake system, and the opening degree of the control valve is controlled in accordance with a drive signal output from a control device to control a passage cross section of the auxiliary air passage. An on-off valve that opens and closes the auxiliary air passage as an air flow rate regulating means that regulates the maximum air flow rate of the auxiliary air passage in conjunction with a temperature-sensitive member that detects engine temperature and undergoes thermal displacement. and a helical bimetal as the temperature-sensitive member whose inner end is fixed to the end of the rotating shaft of the on-off valve and whose outer end is fixed to the support member that rotatably supports the rotating shaft. In an auxiliary air flow control valve for an internal combustion engine, comprising:
A groove for inserting a helical bimetal is provided at the end of the rotating shaft on the helical bimetal fixed side, extending from the end surface along the axis center and having a depth greater than the width of the inner end of the helical bimetal. An auxiliary air flow control valve for an internal combustion engine, characterized in that both sides of the end of a driving shaft with a groove in between are formed into thin plate shapes that can be deformed so as to clamp and fix the inner end of a helical bimetal.