JPH03104107U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１〜３図はこの考案の実施例を示し、第１図
は動弁装置を備えた内燃機関の構成図、第２図は
第１図における動弁装置の拡大図、第３図はロツ
カアームに作用する力の関係を示す図である。第
４〜６図は従来の内燃機関を示し、第４図は動弁
装置を備えた内燃機関の構成図、第５図は第４図
における動弁装置の拡大図、第６図はロツカアー
ムに作用する力の関係を示す図である。 図において、２……内燃機関、４……バンクシ
リンダ、６……シリンダブロツク、１６……吸気
弁、１８……排気弁、３０……クランク軸、３２
……カム軸、３４……油圧タペツト、３６……ロ
ツカアーム、４０……動弁装置、４２……支承部
、４４……ステム接触面、５０……スリツパ接触
面、５２……カム、５４……カム面、そして５８
……タペツト接触端面である。 Figures 1 to 3 show examples of this invention, Figure 1 is a block diagram of an internal combustion engine equipped with a valve train, Figure 2 is an enlarged view of the valve train in Figure 1, and Figure 3 is a rocker arm. FIG. Figures 4 to 6 show conventional internal combustion engines, Figure 4 is a configuration diagram of an internal combustion engine equipped with a valve train, Figure 5 is an enlarged view of the valve train in Figure 4, and Figure 6 is a locking arm. FIG. 3 is a diagram showing the relationship between the forces that act. In the figure, 2... Internal combustion engine, 4... Bank cylinder, 6... Cylinder block, 16... Intake valve, 18... Exhaust valve, 30... Crankshaft, 32
...Camshaft, 34...Hydraulic tappet, 36...Rocker arm, 40...Valve train, 42...Support, 44...Stem contact surface, 50...Slipper contact surface, 52...Cam, 54... ...cam surface, and 58
...This is the end surface that comes in contact with the tappet.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 基端部がタペツトに支承されたロツカアームの
先端部一側のステム接触面をバルブのステム先端
面に当接して設け、前記ロツカアームの先端部他
側のスリツパ接触面にカム軸のカムのカム面を当
接して設け、前記ロツカアームの基端部には該基
端部の回転中心を通る平面上でタペツト接触端面
を形成した内燃機関の動弁装置において、前記ス
リツパ接触面上で前記カム面との接点と前記ロツ
カアームの基端部の回転中心とを結ぶ第１軸線を
描出し、前記回転中心を通り前記タペツト接触端
面に含まれる第２軸線を描出し、この第２軸線を
前記第１軸線の延長上に位置すべく前記タペツト
接触端面を前記ロツカアームの基端部に形成した
ことを特徴とする内燃機関の動弁装置。 The stem contact surface on one side of the distal end of the rocker arm, whose base end is supported by a tapepet, is provided in contact with the stem end surface of the valve, and the cam surface of the cam of the cam shaft is provided on the slipper contact surface on the other side of the distal end of the rocker arm. In a valve train for an internal combustion engine, the rocker arm is provided with a tappet contact end surface on a plane passing through the rotation center of the base end at the base end of the rocker arm. A first axis connecting the contact point of the rocker arm with the rotation center of the base end of the rocker arm is drawn, a second axis passing through the rotation center and included in the tappet contact end surface is drawn, and this second axis is connected to the first axis. A valve train for an internal combustion engine, characterized in that the tappet contact end surface is formed at a base end of the rocker arm so as to be located on an extension of the rocker arm.