JPS62184115U

JPS62184115U -

Info

Publication number: JPS62184115U
Application number: JP7258886U
Authority: JP
Priority date: 1986-05-16
Filing date: 1986-05-16
Publication date: 1987-11-21

Description

[Brief explanation of the drawing]

第１図は本考案によるバルブ作動モード可変式
動弁装置の主な構成要素を示す斜視図；第２図は
本機構の上視図；第３図は第２図における線に
沿つたバルブリフト時の断面図；第４図は第３図
に類似するバルブ閉鎖時の断面図；第５図は第４
図に類似してバルブ閉鎖より開放に移行する直前
の図；第６図はバルブ停止→作動切換タイミング
を決定するタイミングカムを示す図。１……ロツカアームシヤフト、３……ロツカア
ーム、５……フツク、５′……係止溝、７……カ
ムシヤフト、９……タイミングカム、１１……プ
レート、１３……バルブ作動用カム、１５……バ
ルブ停止用カム。 Figure 1 is a perspective view showing the main components of the variable valve operating mode valve train according to the present invention; Figure 2 is a top view of the mechanism; Figure 3 is a valve lift along the line in Figure 2. Fig. 4 is a sectional view similar to Fig. 3 when the valve is closed; Fig. 5 is a sectional view when the valve is closed;
Similar to the figure, a diagram immediately before the valve changes from closing to opening; FIG. 6 is a diagram showing a timing cam that determines the switching timing from valve stop to operation. 1...Rotsuka arm shaft, 3...Rotsuka arm, 5...Hook, 5'...Latching groove, 7...Camshaft, 9...Timing cam, 11...Plate, 13...Valve operating cam, 15 ...Valve stop cam.

Claims

[Scope of Claim for Utility Model Registration] A rocker arm that operatively engages with an intake valve or an exhaust valve is attached to a rocker arm shaft so as to be swingable and slidable in the axial direction, and two cams with different cam profiles are mounted on a camshaft. Variable valve operation mode for internal combustion engines in which the operation mode of the intake valve or exhaust valve is switched by arranging them adjacent to each other and selectively engaging either one of the cams by moving the rocker arm in the axial direction. In the type valve operating device, a timing cam is formed on the camshaft, a locking groove is formed in the axial end of the rocker arm, and a force is applied between the timing cam and the locking groove in a substantially radial direction of the camshaft, An engaging member that engages with the timing cam is arranged, and as the timing cam rotates, the engaging member directly engages in the locking groove to restrain the axial movement of the rocker arm, and the locking position. The timing cam selectively occupies a lock release position in which the locking member separates from the stop groove and allows the rocker arm to move in the axial direction, and the engaging member reciprocates in response to the swinging of the rocker arm in the locking position to lock the locker arm. A variable valve operating mode variable valve operating device characterized by having a cam profile that does not interfere with the swinging of the valve.