JPH03123909U

JPH03123909U -

Info

Publication number: JPH03123909U
Application number: JP3494490U
Authority: JP
Priority date: 1990-03-30
Filing date: 1990-03-30
Publication date: 1991-12-17

Description

[Brief explanation of drawings]

第１〜３図はこの考案の実施例を示し、第１図
は内燃機関の要部断面図、第２図は内燃機関の要
部断面図、第３図は内燃機関の概略断面図である
。第４〜８図はこの考案の従来の技術を示し、第
４図はロツカアームの概略平面図、第５図はロツ
カアームの概略側面図、第６図はロツカアームの
概略正面図、第７図はロツカアームの要部断面図
、第８図はロツカアームの概略平面図である。図において、２は内燃機関、４はシリンダヘツ
ド、６はシリンダヘツドカバー、８は燃焼室、１
０は吸気ポート、１２は排気ポート、１４は吸気
バルブ、１６は排気バルブ、１８は動弁室、２０
はカムシヤフト、２２は取付窪部、２４は第１ロ
ツカアーム、２６は取付凸部、２８は第１接触部
、３０は吸気用カム、３２は第１押圧部、３４は
排気用カム、３６は第２ロツカアーム、３８は第
２接触部、４０は軸受孔部、４２は第２押圧部、
４４はカムシヤフトの中心線、４６はロツカアー
ムシヤフト、４８はロツカアームシヤフトの中心
線である。 Figures 1 to 3 show examples of this invention; Figure 1 is a sectional view of the main parts of an internal combustion engine, Figure 2 is a sectional view of the main parts of the internal combustion engine, and Figure 3 is a schematic sectional view of the internal combustion engine. . 4 to 8 show the conventional technology of this invention, FIG. 4 is a schematic plan view of the rocker arm, FIG. 5 is a schematic side view of the rocker arm, FIG. 6 is a schematic front view of the rocker arm, and FIG. 7 is a schematic plan view of the rocker arm. FIG. 8 is a schematic plan view of the rocker arm. In the figure, 2 is an internal combustion engine, 4 is a cylinder head, 6 is a cylinder head cover, 8 is a combustion chamber, 1
0 is an intake port, 12 is an exhaust port, 14 is an intake valve, 16 is an exhaust valve, 18 is a valve train chamber, 20
is a camshaft, 22 is a mounting recess, 24 is a first rocker arm, 26 is a mounting convex portion, 28 is a first contact portion, 30 is an intake cam, 32 is a first pressing portion, 34 is an exhaust cam, and 36 is a first 2 rocker arm, 38 is a second contact part, 40 is a bearing hole part, 42 is a second pressing part,
44 is the center line of the camshaft, 46 is the rocker armshaft, and 48 is the centerline of the rocker armshaft.

Claims

[Scope of utility model registration request]

In the rocker arm shaft of an internal combustion engine, the rocker arm shaft of the internal combustion engine is inserted into the bearing hole of the rocker arm in which the cam contact part on one end side contacts the cam of the camshaft and the valve pressing part on the other end side contacts the valve stem end. A rocker armshaft for an internal combustion engine, characterized in that the centerline of the rocker armshaft is inclined in advance by a predetermined angle with respect to the centerline of the camshaft in order to prevent uneven wear between the contact portion and the cam of the camshaft. .