JPH0387941U

JPH0387941U -

Info

Publication number: JPH0387941U
Application number: JP14839089U
Authority: JP
Priority date: 1989-12-22
Filing date: 1989-12-22
Publication date: 1991-09-09

Description

[Brief explanation of the drawing]

第１図および第２図は本考案に係る排気ブレー
キバルブの一実施例としてバタフライバルブを示
したもので、第１図はそのバルブの縦断面図、第
２図はそのバルブのシール状態を拡大して示した
要部縦断面図、第３図および第４図は本考案に係
る排気ブレーキバルブの他の実施例として仕切弁
を示したもので、第３図はそのバルブの縦断面図
、第４図はそのバルブのシール状態を拡大して示
した要部縦断面図、第５図は第３図および第４図
に示した実施例の変形例を示したもので、シール
状態を拡大して示した要部縦断面図、第６図は排
気ブレーキ装置を示した概念図、第７図は従来の
排気ブレーキバルブを示した縦断面図である。１……排気ブレーキバルブ、２……バルブハウ
ジング、２ｂ……孔、３……排気通路、４……弁
体、５……弁体駆動軸、５ａ……端部、６……弁
体駆動軸、６ａ……端部、６ｂ……先端部、６ｃ
……段部、７……ブツシユ、７ａ……溝、８……
プレート、９……室、１０……間隙、１１……ブ
ツシユ、１２……ブラケツト、１２ａ……孔、１
４……シールリング、１５……間隙、２１……排
気ブレーキバルブ、２２……バルブハウジング、
２３……排気通路、２４……弁体、２５……弁体
駆動軸、２５ａ……一端部、２５ｂ……他端部、
２５ｃ……段部、２６……ブツシユ、２７……ア
クチユエータハウジング、２７ａ，２７ｂ……孔
、２８……ピストン、２９……スプリング、３０
……シールリング、３１……間隙、３２……プレ
ート、３３……ガスケツト、３４……圧力室、３
５……スペーサ。 Figures 1 and 2 show a butterfly valve as an example of the exhaust brake valve according to the present invention. Figure 1 is a vertical sectional view of the valve, and Figure 2 is an enlarged view of the sealed state of the valve. 3 and 4 show a gate valve as another embodiment of the exhaust brake valve according to the present invention; FIG. 3 is a longitudinal sectional view of the valve; Fig. 4 is an enlarged vertical sectional view of the main part showing the sealed state of the valve, and Fig. 5 shows a modification of the embodiment shown in Figs. 3 and 4, with the sealed state enlarged. FIG. 6 is a conceptual diagram showing an exhaust brake device, and FIG. 7 is a longitudinal sectional view showing a conventional exhaust brake valve. DESCRIPTION OF SYMBOLS 1... Exhaust brake valve, 2... Valve housing, 2b... Hole, 3... Exhaust passage, 4... Valve body, 5... Valve body drive shaft, 5a... End, 6... Valve body drive Shaft, 6a... end, 6b... tip, 6c
...Stepped portion, 7...Butsuyu, 7a...Groove, 8...
Plate, 9...chamber, 10...gap, 11...button, 12...bracket, 12a...hole, 1
4... Seal ring, 15... Gap, 21... Exhaust brake valve, 22... Valve housing,
23... Exhaust passage, 24... Valve body, 25... Valve body drive shaft, 25a... One end, 25b... Other end,
25c...Step, 26...Bush, 27...Actuator housing, 27a, 27b...Bore, 28...Piston, 29...Spring, 30
... Seal ring, 31 ... Gap, 32 ... Plate, 33 ... Gasket, 34 ... Pressure chamber, 3
5...Spacer.

Claims

[Scope of utility model registration request]

A valve body driving shaft is disposed so as to be movable in its axial direction, a stepped portion is formed on the shaft, and a seal ring is fitted, so that the shaft moves as the valve body closes. An exhaust brake valve characterized in that the seal ring is compressed by a member of the valve housing into which the shaft is inserted and a stepped portion of the shaft.