JPS61186707U

JPS61186707U -

Info

Publication number: JPS61186707U
Application number: JP7004185U
Authority: JP
Priority date: 1985-05-14
Filing date: 1985-05-14
Publication date: 1986-11-21

Description

[Brief explanation of the drawing]

第１図は、本考案による動弁装置に用いられる
バルブ作動部材の一実施例としてのロツカアーム
の要部を示す切り欠き側面図、第２図は、第１図
の―線によるそのロツカアームの先端部の切
断正面図、第３図は、そのロツカアームが接触す
る弁軸の端面を示す平面図、第４図は、本考案の
他の実施例を示す、異なるロツカアームについて
の第２図と同様な切断正面図、第５図は、本考案
が適用されるエンジンの動弁装置の一例を示す縦
断面図である。１……エンジン、２……シリンダヘツド、３…
…燃焼室、４……吸気口、５……排気口、６……
吸気弁、７……排気弁、８，９……弁軸、８ａ，
９ａ……弁軸端面、１４……バルブスプリング、
１５……ロツカアーム（バルブ作動部材）、１５
ａ……押圧部、ｌ……線接触部分、Ｍ……線接触
部分の中心、Ｏ……弁軸端面の中心線、Ｘ……ロ
ツカアームの回動面。 FIG. 1 is a cutaway side view showing the essential parts of a locker arm as an embodiment of a valve actuating member used in a valve train according to the present invention, and FIG. 2 is a tip of the locker arm shown by the -- line in FIG. 1. FIG. 3 is a plan view showing the end face of the valve shaft with which the rocker arm contacts, and FIG. 4 is a diagram similar to FIG. The cutaway front view and FIG. 5 are longitudinal sectional views showing an example of an engine valve train to which the present invention is applied. 1...Engine, 2...Cylinder head, 3...
...Combustion chamber, 4...Intake port, 5...Exhaust port, 6...
Intake valve, 7... Exhaust valve, 8, 9... Valve shaft, 8a,
9a... Valve shaft end surface, 14... Valve spring,
15...Rotsuka arm (valve operating member), 15
a...Press portion, l...Line contact portion, M...Center of line contact portion, O...Center line of valve shaft end surface, X...Rotating surface of rocker arm.

Claims

[Claims for Utility Model Registration] An intake and exhaust valve that can open and close an intake and exhaust port opening into a combustion chamber by reciprocating in the axial direction; a valve spring that biases the intake and exhaust valve in a closing direction; By rotating around the axis perpendicular to the valve stem of the intake and exhaust valve and pressing the end face of the valve stem,
A valve operating device for an engine, comprising: a valve operating member capable of opening the intake and exhaust valves against the elastic force of the valve spring; By making the surface almost cylindrical, the valve operating member and the valve shaft end face are in line contact, and by cutting out one side of the pressing part of the valve operating member that contacts the valve shaft end face, the valve A valve train for an engine, in which the center of a line contact portion between an operating member and a valve shaft end surface is offset to one side with respect to a center line of the valve shaft end surface.