JPH0252910U

JPH0252910U -

Info

Publication number: JPH0252910U
Application number: JP13244488U
Authority: JP
Priority date: 1988-10-11
Filing date: 1988-10-11
Publication date: 1990-04-17

Description

[Brief explanation of drawings]

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５Ａ図は弾発付勢手段の拡大縦断面図
、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１
０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、２３ｉ
，２３ｅ，２４ｉ，２４ｅ……駆動ロツカアーム
、２５ｉ，２５ｅ……自由ロツカアーム、２６ｉ
，２６ｅ……連結切換機構、４４ｉ，４４ｅ……
弾発付勢手段、４６……当接部材、４７……第１
ばね、４８……第２ばね、５０……リテーナ、１
３１，１３２……緩衝材。 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.
Line sectional view, Figure 2 is a - line arrow view of Figure 1,
Figure 3 is a cross-sectional view taken along the line - in Figure 2, and Figure 4 is a cross-sectional view of Figure 1.
5 is a sectional view taken along the line ``-'' in FIG. 2, FIG. 5A is an enlarged vertical sectional view of the spring biasing means, and FIG. Figure 7 is a diagram showing the refueling system, Figure 8 is a view taken along the - line in Figure 2, Figure 9 is a sectional view taken along the - line in Figure 8, and Figure 1 is a diagram showing the oil supply system.
0 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, 23i
, 23e, 24i, 24e...driving rocker arm, 25i, 25e...free rocker arm, 26i
, 26e... Connection switching mechanism, 44i, 44e...
Spring biasing means, 46... contact member, 47... first
Spring, 48...Second spring, 50...Retainer, 1
31,132...Buffer material.

Claims

[Scope of utility model registration request]

A drive rocker arm that is interlocked and connected to the engine valve and a free rocker arm that can be free with respect to the engine valve are arranged adjacent to each other so that they can operate in different ways depending on the rotation of the camshaft. A connection switching mechanism capable of switching connection and release is provided, and between the free rocker arm and the engine body, there is a contact member that abuts the free rocker arm, and a retainer that is movably arranged between the corresponding contact member and the engine body. , a first spring interposed between the contact member and the retainer, and a second spring having a larger spring constant than the first spring and interposed between the retainer and the engine body. 1. A valve operating system for an internal combustion engine in which a means is interposed, characterized in that cushioning materials are provided at portions of the retainer and the contact member that can contact each other.