JPS6018205U

JPS6018205U - Internal combustion engine intake and exhaust valve drive device

Info

Publication number: JPS6018205U
Application number: JP10924283U
Authority: JP
Inventors: 三井所　和幸; 誠之助原; 松本　泰郎; 康雄吉川
Original assignee: 日産自動車株式会社
Priority date: 1983-07-14
Filing date: 1983-07-14
Publication date: 1985-02-07

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図は従来の吸排気弁駆動装置の断面図、第　　　２
図は制御油圧回路図、第３図はバルブリフト特性図、第
４図はこの考案の要部を示す側面図、第５図は他の実施
例の要部を示す側面図、第６図ａはさらに他の実施例の
要部を示す側面図、第６図すは第６図ａのＸ−Ｘ線断面
図、第７図ａはまた他の実施例の要部を示す側面図、第
７図すは第７図ａのＹ−Ｙ線断面図である。１１・・・バルブ駆動カム、１２・・・吸排気弁、１４
・・・ブラケット、１５ａ・・・カムジャーナル、１７
・・・ロッカアーム、２０・・・レバー、２５・・・油
圧アクチュエータ、４１．４２．４３．４５・・・歪伝
達防止切欠。Figure 1 is a sectional view of a conventional intake/exhaust valve drive device;
The figure is a control hydraulic circuit diagram, Figure 3 is a valve lift characteristic diagram, Figure 4 is a side view showing the main parts of this invention, Figure 5 is a side view showing the main parts of another embodiment, and Figure 6a. 6 is a side view showing the main part of another embodiment, FIG. 6 is a sectional view taken along the line X-X of FIG. FIG. 7 is a sectional view taken along the line Y--Y in FIG. 7a. 11... Valve drive cam, 12... Intake and exhaust valve, 14
...Bracket, 15a...Cam journal, 17
...Rocker arm, 20...Lever, 25...Hydraulic actuator, 41.42.43.45...Strain transmission prevention notch.

Claims

[Scope of utility model registration request]

a valve drive cam that rotates in synchronization with engine rotation; a rocker arm that has one end in contact with the valve drive cam and the other end that is linked to the valve stem; a lever with a rocker arm support surface that makes contact with the fulcrum; a bracket that is fixed by a bolt so as to come into contact with the upper part of the cylinder head and that supports one end of the lever on the valve side; In an intake/exhaust valve drive device for an internal combustion engine, the cylinder head and the bracket include a hydraulic actuator that supports one end on the drive cam side and controls the inclination of the lever by expanding and contracting in accordance with the control hydraulic pressure. An intake/exhaust valve drive device for an internal combustion engine, characterized in that a strain transmission prevention notch is provided on one or both of the pressure contact surfaces to prevent strain on the bracket side from being transmitted to the cam journal side of the cylinder head.