JPS6338605U

JPS6338605U -

Info

Publication number: JPS6338605U
Application number: JP13215686U
Authority: JP
Priority date: 1986-08-29
Filing date: 1986-08-29
Publication date: 1988-03-12
Also published as: JPH0444804Y2

Description

[Brief explanation of the drawing]

第１図は、本考案の油圧式バルブラツシユアジ
ヤスタの断面図である。第２図は、本考案の油圧
式バルブラツシユアジヤスタを有するＤＯＨＣ型
の動弁系の配置図である。第３図は、本考案のロ
ツカーアーム内装型油圧式バルブラツシユアジヤ
スタを有するＯＨＣ型動弁系の配置図である。第
４図は、本考案のロツカーアーム内装型油圧式バ
ルブラツシユアジヤスタの断面図である。第５図
は、本考案の回り止めの変形例を示す第４図の油
圧式バルブラツシユアジヤスタの底面図である。
第６図は、直立姿勢で示す従来の油圧式バルブラ
ツシユアジヤスタの略断面図である。第７図は、
シリンダ内に傾斜姿勢で嵌入された第６図の油圧
式バルブラツシユアジヤスタの断面図である。１……油圧式バルブラツシユアジヤスタ、２…
…ロツカーアーム、５……円筒形アウタプランジ
ヤ、６……プランジヤヘツド、７……円筒形イン
ナプランジヤ、８……チエツク弁、１２……油供
給回路、１４……油導入口、１５……給油口、１
６……切り欠き、１８……気泡排出用連通口、１
９……気泡収集室、２０……隙間、２３……リザ
ーバ室、２４……高圧室、３１……回り止め。 FIG. 1 is a sectional view of the hydraulic valve lash adjuster of the present invention. FIG. 2 is a layout diagram of a DOHC type valve train having a hydraulic valve lash adjuster according to the present invention. FIG. 3 is a layout diagram of an OHC type valve train having a rocker arm built-in hydraulic valve lash adjuster according to the present invention. FIG. 4 is a sectional view of the rocker arm internal type hydraulic valve latch adjuster of the present invention. FIG. 5 is a bottom view of the hydraulic valve latch adjuster of FIG. 4 showing a modification of the rotation stopper of the present invention.
FIG. 6 is a schematic cross-sectional view of a conventional hydraulic valvelash adjuster shown in an upright position. Figure 7 shows
FIG. 7 is a cross-sectional view of the hydraulic valve latch adjuster of FIG. 6 inserted into the cylinder in an inclined position; 1...Hydraulic valve lash adjuster, 2...
... Rocker arm, 5 ... Cylindrical outer plunger, 6 ... Plunger head, 7 ... Cylindrical inner plunger, 8 ... Check valve, 12 ... Oil supply circuit, 14 ... Oil inlet, 15 ... Oil supply port ,1
6...Notch, 18...Bubble discharge communication port, 1
9... Air bubble collection chamber, 20... Gap, 23... Reservoir chamber, 24... High pressure chamber, 31... Rotation stopper.

Claims

[Scope of utility model registration request]

A cylindrical outer plunger is fitted in a cylinder provided in a cylinder head or a rocker arm in an inclined position with a gap communicating with the outside, and a cylindrical inner plunger is provided inside the outer plunger with an orifice at the bottom. is slidably inserted into the outer plunger, and a plunger head is placed within the outer plunger, and the open end of the plunger head having a notch abuts the open end of the inner plunger opposite to the orifice, and the plunger head is placed in the bottom of the inner plunger. The check valve is arranged to allow hydraulic oil to flow only from the reservoir chamber formed in the inner plunger and the plunger head to the high pressure chamber formed by the bottom of the inner plunger and the outer plunger. In such a hydraulic valve latch adjuster, the outer plunger is provided with an oil inlet that communicates with an oil supply circuit provided in the cylinder head or rocker arm near its open end on the side opposite to the high pressure chamber, and is aligned with this. An oil supply port to the reservoir chamber is formed in the plunger head, and a communication port for air bubble discharge is formed in the upper wall of the outer plunger between the high pressure chamber and the oil inlet, aligned with the notch of the plunger head. , the air bubble discharge communication port is opened to an annular air bubble collection chamber formed on the outer peripheral surface of the outer plunger and communicating with the gap, and a rotation stopper is provided to prevent relative rotation of the outer plunger with respect to the cylinder. Hydraulic valve latch adjuster.