JPS5949705U

JPS5949705U - Hydraulic valve lifter device

Info

Publication number: JPS5949705U
Application number: JP14495182U
Authority: JP
Inventors: 菊地　安信; 勝敏北川
Original assignee: トヨタ自動車株式会社
Priority date: 1982-09-24
Filing date: 1982-09-24
Publication date: 1984-04-02

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

図は、本考案に係る油圧式バルブリフタ装置の実施例の
断面図である。１・・・・・・リフタボデー、２・・・・・・リフタポ
デーの上端壁＞３・・・・・・リフタホゾ−の上端壁、
４・・・・−リフタボデーの内室、５・・・・・・リフ
タボデーのシリンダボア、６・・・・・・第１のプラン
ジャ要素、７・・・・・・第１のプランジャ要素のシリ
ンダボア、８・・・・・・油室、９・・・・・・第２の
プランジャ要素、１１・・・・・・第２のプランジャ要
素の下端壁、１２・・・・・・圧力室、１３・・・・・
・連通孔、１４・・・・・・ポール、１５・・曲圧縮コ
イルばね、１７・・・・・・圧縮コイルばね、２０・・
・・・・バルブリフトカム、２１・・・・・・バルブス
テム、２２・・・・・・空気孔、２４・・・・・・連通
孔、２−５・・・・・・仕切り板、２６・・・・・・小
室、２７・・・・・・ポール、２８・・・・・・圧縮コ
イルばね。The figure is a sectional view of an embodiment of a hydraulic valve lifter device according to the present invention. 1... Lifter body, 2... Upper end wall of lifter body > 3... Upper end wall of lifter tenon,
4...Inner chamber of lifter body, 5...Cylinder bore of lifter body, 6...First plunger element, 7...Cylinder bore of first plunger element, 8...Oil chamber, 9...Second plunger element, 11...Lower end wall of second plunger element, 12...Pressure chamber, 13・・・・・・
・Communication hole, 14...Pole, 15...Curved compression coil spring, 17...Compression coil spring, 20...
... Valve lift cam, 21 ... Valve stem, 22 ... Air hole, 24 ... Communication hole, 2-5 ... Partition plate, 26... Small room, 27... Paul, 28... Compression coil spring.

Claims

[Scope of utility model registration request]

A cylindrical lift body has an inner chamber defined therein and a cylinder bore formed in its lower end wall; a cup-shaped second plunger element that is slidably fitted into the cylinder bore of the first plunger element and has an oil chamber that communicates with the inner chamber of the lifter pode; A pressure chamber whose upper limit is limited by the lower end wall of the second plunger element is formed in the plunger element, and the lower end wall of the second plunger element connects the oil chamber and the pressure chamber. A communication hole is bored in the communication hole, and a check valve is installed in the communication hole to allow fluid to flow only from the oil chamber toward the pressure chamber, and the second plunger element is connected to the pressure chamber. A compression coil spring is provided that acts in a direction to pull the plunger out from the first plunger element, and an air hole is provided in the upper end wall of the lifter body to communicate the inner chamber of the lifter tenon with the outside. A check valve is incorporated in the air hole to allow fluid to flow only from the inner chamber of the lifter pode to the outside of the lifter tenon, and the inner chamber of the lifter pode and the oil chamber of the second plunger element are connected to each other. The engine is constantly supplied with oil from the engine's oil pump9.
The upper surface of the upper end wall of the lifter body is in direct contact engagement with the valve lift cam, and the second plunger element is in contact with the lower surface of the upper end surface of the lifter body, and the valve opening pushing pressure of the valve lift cam is adjusted to the pressure. A hydraulic valve lifter device, characterized in that it is configured to act on the valve stem at the bottom surface of the first plunger element through oil in the chamber.