JPS628309U

JPS628309U -

Info

Publication number: JPS628309U
Application number: JP9833685U
Authority: JP
Priority date: 1985-06-29
Filing date: 1985-06-29
Publication date: 1987-01-19

Description

[Brief explanation of the drawing]

第１図は本考案の第１の実施例の縦断面図、第
２図は本考案の第２の実施例の縦断面図、第３図
は同上第２実施例の要部の拡大縦断面図、第４図
は本考案の第３の実施例の縦断面図である。１……ロツカーアーム、２……ロツカーシヤフ
ト、３……吸排気弁、３ａ……吸排気弁軸線、３
ｂ……ロツカーアーム作用点、５……リテーナ、
５０１……リテーナ本体、５０２……ベアリング
、５０３……リング、５１１……リテーナ本体、
５１２……ピストン、５１３……リターンスプリ
ング、５１４………プレート、５１５……リング
、５２１……リテーナ本体、６……弁スプリング
、７……弁座、８……ボール。 Fig. 1 is a longitudinal sectional view of the first embodiment of the present invention, Fig. 2 is a longitudinal sectional view of the second embodiment of the invention, and Fig. 3 is an enlarged longitudinal sectional view of the main parts of the second embodiment of the same. FIG. 4 is a vertical sectional view of a third embodiment of the present invention. 1...Rotzker arm, 2...Rotzker shaft, 3...Intake and exhaust valve, 3a...Intake and exhaust valve axis, 3
b...Lotsuker arm application point, 5...retainer,
501...Retainer body, 502...Bearing, 503...Ring, 511...Retainer body,
512...Piston, 513...Return spring, 514...Plate, 515...Ring, 521...Retainer body, 6...Valve spring, 7...Valve seat, 8...Ball.

Claims

[Claims for Utility Model Registration] 1. An intake/exhaust valve that opens and closes an intake/exhaust port opened into a combustion chamber, and a cam rotating in synchronization with the engine that presses the valve in its axial direction to open/close the intake/exhaust port. A rocker arm supported by a rocker shaft so as to open the mouth, and a spiral valve spring that constantly biases the valve in the closing direction, and the point of action of the rocker arm on the valve is moved from the axis of the valve to the In a valve rotation device for an internal combustion engine, the rocker shaft is biased by a predetermined amount in the axial direction and rotated around the axis when the valve is opened, in which the biasing direction of the point of action between the rocker arm and the intake/exhaust valve is The winding direction is the same as that of the valve spring when viewed from the exhaust valve side, and a friction reduction mechanism is interposed between the intake and exhaust valve and the front air valve spring to reduce rotational resistance between the intake and exhaust valve and the valve spring. A valve rotation device for an internal combustion engine characterized by being small. 2. A utility model registration claim in which the friction reducing mechanism is constituted by a retainer body fixed to the intake/exhaust valve, a support ring for the valve spring, and a bearing interposed between the retainer body and the support ring. 2. The valve rotation device for an internal combustion engine according to claim 1. 3. A valve rotation device for an internal combustion engine according to claim 2, which uses a needle bearing as the bearing. 4. A valve rotation device for an internal combustion engine according to claim 2, which uses a ball bearing as the bearing. 5. Utility model registration claim No. 5, wherein the friction reduction mechanism is constituted by a retainer body fixed to the intake/exhaust valve, a support ring for the valve spring, and a lubricating oil film layer between the retainer body and the support ring. The valve rotation device for an internal combustion engine according to item 1. 6. A request for registration of a utility model in which the friction reducing mechanism is constituted by a support ring for the valve spring and a plurality of balls disposed around the valve between the support ring and the intake/exhaust valve. range 1
A valve rotation device for an internal combustion engine as described in .