JPH0452911U

JPH0452911U -

Info

Publication number: JPH0452911U
Application number: JP9631090U
Authority: JP
Priority date: 1990-09-12
Filing date: 1990-09-12
Publication date: 1992-05-06

Description

[Brief explanation of the drawing]

図面は本考案の一実施例を示すもので、第１図
は内燃機関の要部縦断面図であつて第２図の―
線断面図、第１Ａ図は第１図の要部拡大図、第
２図は第１図の―線矢視図、第３図は第２図
の―線断面図、第４図は第１図の―線断
面図、第５図は第２図の―線断面図、第６図
は第１図の―線拡大断面図、第７図は給油系
統を示す図、第８図は第２図の―線矢視図、
第９図は第８図の―線断面図、第１０図は第
８図の―線に沿う切換弁閉弁時の拡大断面図
、第１１図は第２図の―線断面図である
。１０ｉ……機関弁としての吸気弁、１０ｅ……
機関弁としての排気弁、１７ｉ，１７ｅ……動弁
装置、１８ｉ，１８ｅ……カムシヤフト、１９ｉ
，１９ｅ，２０ｉ，２０ｅ……低速用カム、２１
ｉ，２１ｅ……高速用カム、２３ｉ，２３ｅ，２
４ｉ，２４ｅ，２５ｉ，２５ｅ……ロツカアーム
、２３ｉ′，２３ｅ′，２４ｉ′，２４ｅ′，２
５ｉ′，２５ｅ′……カムスリツパ部、２６ｉ，
２６ｅ……連結切換機構、５１，５２……切換ピ
ン。 The drawings show one embodiment of the present invention, and FIG. 1 is a vertical sectional view of the main part of an internal combustion engine, and FIG.
Figure 1A is an enlarged view of the main part of Figure 1, Figure 2 is a view taken along the line - - of Figure 1, Figure 3 is a cross-sectional view of Figure 2, and Figure 4 is an enlarged view of the main part of Figure 1. Figure 5 is a cross-sectional view taken along line - of Figure 2, Figure 6 is an enlarged cross-sectional view taken line - of Figure 1, Figure 7 is a diagram showing the oil supply system, and Figure 8 is line 2 of Figure 2. - line arrow view of the figure,
9 is a cross-sectional view taken along the line --- in FIG. 8, FIG. 10 is an enlarged cross-sectional view taken along the -- line in FIG. 8 when the switching valve is closed, and FIG. 11 is a cross-sectional view taken along the -- line in FIG. 10i... Intake valve as engine valve, 10e...
Exhaust valve as engine valve, 17i, 17e...Valve train, 18i, 18e...Camshaft, 19i
, 19e, 20i, 20e...Low speed cam, 21
i, 21e...high speed cam, 23i, 23e, 2
4i, 24e, 25i, 25e... Rotsuka arm, 23i', 23e', 24i', 24e', 2
5i', 25e'... cam slipper part, 26i,
26e...Connection switching mechanism, 51, 52...Switching pin.

Claims

[Scope of utility model registration request]

A plurality of rocker arms are supported on a fixed rocker shaft to open and close the engine valve, and each of these rocker arms is provided with a cam slipper portion to individually slide into a plurality of cams fixed to the camshaft. In a valve train for an internal combustion engine, the switching pin of the coupling switching mechanism is provided with a coupling switching mechanism having a switching pin movable between a position for coupling and a position for releasing the coupling between adjacent rocker arms at positions corresponding to the parts.
An internal combustion engine characterized in that it is formed into a solid cylindrical shape and is slidably fitted into a corresponding rocker arm with an axis line located at a position where the wall thickness of each rocker arm including the cam slipper portion is approximately half. Engine valve gear.