JPS60198313A - Tappet valve system of internal-combustion engine - Google Patents

Tappet valve system of internal-combustion engine

Info

Publication number
JPS60198313A
JPS60198313A JP59055325A JP5532584A JPS60198313A JP S60198313 A JPS60198313 A JP S60198313A JP 59055325 A JP59055325 A JP 59055325A JP 5532584 A JP5532584 A JP 5532584A JP S60198313 A JPS60198313 A JP S60198313A
Authority
JP
Japan
Prior art keywords
rocker arm
spring
plunger
arm
cylinder body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP59055325A
Other languages
Japanese (ja)
Other versions
JP2537341B2 (en
Inventor
Toshimitsu Shida
志田　敏光
Yoshio Komatsu
小松　好雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuji Oozx Inc
Original Assignee
Fuji Valve Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Valve Co Ltd filed Critical Fuji Valve Co Ltd
Priority to JP5532584A priority Critical patent/JP2537341B2/en
Publication of JPS60198313A publication Critical patent/JPS60198313A/en
Application granted granted Critical
Publication of JP2537341B2 publication Critical patent/JP2537341B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F01L1/185—Overhead end-pivot rocking arms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L1/2405—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the cylinder head and rocker arm
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F01L2001/187—Clips, e.g. for retaining rocker arm on pivot

Abstract

PURPOSE:To cause smooth sliding of the plunger of a hydraulic type lash aduster, by a method wherein a spring is located in a manner that the one end is coupled to a cylinder body, and the other end is brought into contact with the end surface of a rocker arm, and the horizontal component of a force is exerted on the locker arm. CONSTITUTION:A tappet valve has a rocker arm 3 which has the one end rotatably connected to a piston head of a plunger 11 of a hydraulic type lash adjuster mounted to a cylinder head 1. At the other end of the rocker arm 3, the under surface part is brought into contact with an engine valve 2, and the upper surface part is brought into contact with a cam 4. In which case, one end 7' of a coil spring 7 is coupled to an arm 8' of a stay 8 secured to a cylinder body 12, and other end 7'' is engaged with a recess formed in the rocker arm 3. A lateral load component is applied on the plunger 11 through the rocker arm 3 through the force of the spring 7. This causes offsetting of an excess lateral load applied on the plunger 11, resulting in achievement of a desired purpose.

Description

【発明の詳細な説明】 本発明は、ロッカーアームスプリングシリンダヘッドに
設けた油圧式ラッシュアジャスタのプランジャのピボッ
トヘッドに一端回動自在に取付けたロッカーアームを備
え、ロッカーアームの下面にエンジンパルプを、又その
上面にカムを当接してなる内燃機関の動弁系に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention comprises a rocker arm rotatably attached at one end to the pivot head of a plunger of a hydraulic lash adjuster provided in a rocker arm spring cylinder head, and engine pulp is attached to the lower surface of the rocker arm. The present invention also relates to a valve train system for an internal combustion engine in which a cam is brought into contact with the upper surface of the valve train.

この種の動弁系にあっては、動弁系のジオメトリ−によ
ってはピボットヘッドに大きな横分力が加わる場合があ
り、油圧式ラッシュアジャスタのグランジャがシリンダ
ボディとの摺動部忙おいて大きな摩擦力を受け、油圧式
ラッシュアジャスタが円滑に働かな（なったり、摺動部
の耐久性が低下したりする問題があった。In this type of valve train, depending on the geometry of the valve train, a large lateral force may be applied to the pivot head. There were problems with the hydraulic lash adjuster not working smoothly due to frictional force, and the durability of the sliding part decreasing.

本発明はこのような従来の間頌点に着目してなされたも
ので、油圧式ラッシュアジャスタのプランジャに加わる
水平方向荷重を軽減させるようにした内燃機関の動弁系
を提供するにある。The present invention has been made in view of the drawbacks of the prior art, and it is an object of the present invention to provide a valve train system for an internal combustion engine that reduces the horizontal load applied to the plunger of a hydraulic lash adjuster.

本発明によれば、この動弁系は、一端をシリンダボディ
忙連結し、他端をロッカーアームの端面に当接したスプ
リングによって、ロッカーアームに力の水平成分を加え
るようにしたことを特徴とする。According to the present invention, this valve train is characterized in that a horizontal component of force is applied to the rocker arm by a spring whose one end is connected to the cylinder body and whose other end is in contact with the end surface of the rocker arm. do.

以下、この発明の動弁系の実施例を図面に基づいて説明
する。先ず第１図乃至第３図において、本発明の興１弁
系はシリンダヘッドＩＫ設けられた油圧式ラッシュアジ
ャスタのシランジャ１１のピボットヘッド１１′　に一
端が回動自在に取付けられたロッカーアーム３を有し、
ロッカーアーム３の他端にはその下方にエンジンバルブ
２が接し、上方にはカム４が当接している。Embodiments of the valve train system of the present invention will be described below with reference to the drawings. First, in FIGS. 1 to 3, the valve system according to the present invention has a rocker arm 3, one end of which is rotatably attached to the pivot head 11' of a sylanger 11 of a hydraulic lash adjuster provided with a cylinder head IK. have,
The engine valve 2 is in contact with the other end of the rocker arm 3 below, and the cam 4 is in contact with the above end.

グランジャ１１はエンジンシリンダヘッド１に固設され
たシリンダボディ１２内に摺動自在に紙入し、シリンダ
ボディ１２の上端外周に固定されたストッパ１４により
シリンダボディから抜は出さないようにされている。ブ
ラシジャ１１内にはリザーバ室１５が設けられ、プラン
ジャ１１とシリンダボディ１２との間には高圧室２２が
形成されグランジャ下端には高圧室からリザーバ室への
流れを防ぐ、チェックボール１８、チェックスジリング
１９、リテーナ２０よりなるチェック弁が設けられてい
る。リザーバ室には油供給穴１６および１７を通ってシ
リンダヘッド油回路６から油が供給される。The granger 11 is slidably inserted into a cylinder body 12 fixed to the engine cylinder head 1, and is prevented from being pulled out from the cylinder body by a stopper 14 fixed to the outer periphery of the upper end of the cylinder body 12. . A reservoir chamber 15 is provided in the brush jar 11, a high pressure chamber 22 is formed between the plunger 11 and the cylinder body 12, and a check ball 18 and a check strip are provided at the lower end of the granger to prevent flow from the high pressure chamber to the reservoir chamber. A check valve consisting of a ring 19 and a retainer 20 is provided. Oil is supplied to the reservoir chamber from the cylinder head oil circuit 6 through oil supply holes 16 and 17.

四ツカーアーム３の端面にはスプリング取付凹部５が設
けられ、シリンダボディにはスプリングステー固定溝１
３が設けられ、ステー固定溝１３に、アーム８′　をも
ったスプリングステー８が固定される。コイルスゲリン
グ７は、その一端７′がスプリングステー８のアーム８
′　に連結され、他端７′　はスプリング取付部５に係
合してロッカアーム３に横方向の力を加えている。A spring mounting recess 5 is provided on the end surface of the four-wheeled arm 3, and a spring stay fixing groove 1 is provided on the cylinder body.
3 is provided, and a spring stay 8 having an arm 8' is fixed in the stay fixing groove 13. One end 7' of the coil sgering 7 is an arm 8 of the spring stay 8.
The other end 7' engages with the spring mounting portion 5 to apply a lateral force to the rocker arm 3.

第グ図および第Ｓ図はスプリングの変形例を示し、この
例ではスプリング９は引張りばねからなり、その一端９
′　はシリンダボディ１２に固定されるスプリングステ
ー１０のアーム１０’　に連結され、他端９′　はロッ
カーアーム３の端面に設けられたスプリング取付凹部５
に係合する。Figures 9 and 9 show modified examples of the spring; in this example, the spring 9 consists of a tension spring, with one end 9
' is connected to the arm 10' of the spring stay 10 fixed to the cylinder body 12, and the other end 9' is connected to the spring mounting recess 5 provided on the end surface of the rocker arm 3.
engage with.

第６図および第７図に示す例では、コイルスプリング３
１の一端はスプリングステー３１とじて形成され、この
ステー３１′　はシリンダボデーに装着され、他端３１
′　はロッカーアーム３の端面に圧接される。In the example shown in FIGS. 6 and 7, the coil spring 3
1 is formed with a spring stay 31, this stay 31' is attached to the cylinder body, and the other end 31 is attached to the cylinder body.
' is pressed against the end face of the rocker arm 3.

第ざ図および第９図に示す例では、ステリンがシリンダ
ボデーに装着されるステー３２′　と一体に形成された
板ばね３２からなり、その先端はロッカーアーム３の端
面に圧接される。In the example shown in FIGS. 7 and 9, the stellin is composed of a leaf spring 32 formed integrally with a stay 32' attached to the cylinder body, and its tip is pressed against the end surface of the rocker arm 3.

次に本発明による動弁系の作用を説明すると、カム４が
ロッカーアーム３に作動してエンジンバルブが開くと、
プランジャ１１に荷ｌが加わり、チェック弁が閉じ高圧
室２２に高圧が発生し荷重をささえる。この時シリンダ
１２とプランジャ１１との間のわずかな隙間を通して高
圧室２２から油が漏れ、その分プランジャ１１はわずか
に変位する。Next, to explain the operation of the valve train according to the present invention, when the cam 4 acts on the rocker arm 3 and the engine valve opens,
When the load l is applied to the plunger 11, the check valve closes and high pressure is generated in the high pressure chamber 22 to support the load. At this time, oil leaks from the high pressure chamber 22 through a small gap between the cylinder 12 and the plunger 11, and the plunger 11 is slightly displaced by that amount.

エンジンバルブが閉じるとリターンスプリング２１の復
元力によってプランジャ１１が上昇し、この時チェック
弁が開いてリザーバ室１５より高圧室２２へ油が供給さ
れ、リザーバ室へはシリンダヘッド油回路より油供給口
１７．１６を通って油が供給される。When the engine valve closes, the plunger 11 rises due to the restoring force of the return spring 21, and at this time, the check valve opens and oil is supplied from the reservoir chamber 15 to the high pressure chamber 22, and the oil supply port is supplied to the reservoir chamber from the cylinder head oil circuit. Oil is supplied through 17.16.

シリンダボディに対して固定されたロッカーアームスプ
リングはプランジャの動きお゛よびロッカーアームの動
きに従って揺動し、ロッカーアームを介してシランジャ
に横荷重成分を加えてているから、プランジャに加えら
れる過大な横荷重はこれによって相殺され、常に摩擦力
を発生させない。The rocker arm spring, which is fixed to the cylinder body, oscillates according to the movement of the plunger and the rocker arm, and applies a lateral load component to the syringer via the rocker arm. Lateral loads are thereby canceled out and do not generate any frictional forces at all times.

従ってプランジャはシリンダボディ内で円滑に摺動でき
る。Therefore, the plunger can slide smoothly within the cylinder body.

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

第１図は本発明による第１の動弁系の側面図、第２図は
ロッカーアームと油圧式ラッシュアジャスタの関係を示
す断面図、第３図はスプリングおよびステーの斜視図、
第１図は第コの動弁系の側面図、第３図はそのスプリン
グおよびステーの斜視図、第６図は第３０動弁系の側面
図、第７図はそのスゲリングの斜視図、第３図は第ダの
動弁系の側面図、第７図はそのスプリングの斜視図であ
る０ １・・・・・・シリンダヘッド、２・・曲エンジンバル
プ、３・・・・・・ロッカーアーム、４・・・・・・カ
ム、１１・・・・・・シランジャ、１２・・・・・・シ
リンダボディ、１１′・・・・・・ピボットヘッド、 ７ｔ９ｅａｌ、３ｚ・・・・・・スプリング。 第１図FIG. 1 is a side view of a first valve train according to the present invention, FIG. 2 is a sectional view showing the relationship between a rocker arm and a hydraulic lash adjuster, and FIG. 3 is a perspective view of a spring and a stay.
Fig. 1 is a side view of the No. 30 valve train, Fig. 3 is a perspective view of its spring and stay, Fig. 6 is a side view of the No. 30 valve train, Fig. 7 is a perspective view of its Sgelling, Figure 3 is a side view of the valve train, and Figure 7 is a perspective view of its spring. Arm, 4...Cam, 11...Silanger, 12...Cylinder body, 11'...Pivot head, 7t9eal, 3z... spring. Figure 1

Claims (1)

【特許請求の範囲】[Claims] ロッカーアームの一端を、シリンダヘッドに設けられた
油圧式ラッシュアジャスタのプランジャのピボットヘッ
ドに取付け、ロッカーアームの下面にエンジンパルプを
、又その上面にカムを当接した動弁系において、一端を
シリンダボディに連結し、他端をロッカーアームの端面
に当接したスプリングを設け、該スプリングによりロッ
カーアームに力の水平成分を加えるようにしたことを特
徴とする内燃機関の動弁系。One end of the rocker arm is attached to the pivot head of the plunger of a hydraulic lash adjuster provided in the cylinder head, and one end is attached to the cylinder in a valve train with engine pulp on the bottom surface of the rocker arm and a cam on the top surface. A valve train system for an internal combustion engine, characterized in that a spring is connected to the body and the other end is in contact with the end face of the rocker arm, and the spring applies a horizontal component of force to the rocker arm.
JP5532584A 1984-03-23 1984-03-23 Valve train for internal combustion engine Expired - Lifetime JP2537341B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5532584A JP2537341B2 (en) 1984-03-23 1984-03-23 Valve train for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5532584A JP2537341B2 (en) 1984-03-23 1984-03-23 Valve train for internal combustion engine

Publications (2)

Publication Number Publication Date
JPS60198313A true JPS60198313A (en) 1985-10-07
JP2537341B2 JP2537341B2 (en) 1996-09-25

Family

ID=12995386

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5532584A Expired - Lifetime JP2537341B2 (en) 1984-03-23 1984-03-23 Valve train for internal combustion engine

Country Status (1)

Country Link
JP (1) JP2537341B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008002746A2 (en) * 2006-06-26 2008-01-03 Timken Us Corporation Coupling device
DE102006031945A1 (en) * 2006-07-11 2008-01-24 Schaeffler Kg Adjustable rocker arm for valve train of internal combustion engine, has coupler located in recess of levers and brought in contact with levers for case of coupling in sectionwise, and lost-motion spring directly mounted on supporting unit
WO2009038935A1 (en) * 2007-09-18 2009-03-26 The Timken Company Coupling device
EP2267281A1 (en) * 2008-03-07 2010-12-29 OTICS Corporation Rocker arm unit and method of assembling rocker arm unit
CN103061838A (en) * 2012-12-18 2013-04-24 江门市大长江集团有限公司 Low-noise valve rocker assembly of motorcycle engine
US8561585B2 (en) 2009-08-18 2013-10-22 Otics Corporation Rocker arm unit

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008002746A2 (en) * 2006-06-26 2008-01-03 Timken Us Corporation Coupling device
WO2008002746A3 (en) * 2006-06-26 2008-02-28 Timken Us Corp Coupling device
DE102006031945A1 (en) * 2006-07-11 2008-01-24 Schaeffler Kg Adjustable rocker arm for valve train of internal combustion engine, has coupler located in recess of levers and brought in contact with levers for case of coupling in sectionwise, and lost-motion spring directly mounted on supporting unit
WO2009038935A1 (en) * 2007-09-18 2009-03-26 The Timken Company Coupling device
EP2267281A1 (en) * 2008-03-07 2010-12-29 OTICS Corporation Rocker arm unit and method of assembling rocker arm unit
EP2267281A4 (en) * 2008-03-07 2011-04-06 Otics Corp Rocker arm unit and method of assembling rocker arm unit
US8561586B2 (en) 2008-03-07 2013-10-22 Otics Corporation Rocker arm unit and method of assembling rocker arm unit
US8561585B2 (en) 2009-08-18 2013-10-22 Otics Corporation Rocker arm unit
CN103061838A (en) * 2012-12-18 2013-04-24 江门市大长江集团有限公司 Low-noise valve rocker assembly of motorcycle engine
CN103061838B (en) * 2012-12-18 2015-09-09 江门市大长江集团有限公司 Motorcycle engine low noise airvalve swing arm module

Also Published As

Publication number Publication date
JP2537341B2 (en) 1996-09-25

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