JPH065037B2 - Engine accessory drive mechanism - Google Patents
Engine accessory drive mechanismInfo
- Publication number
- JPH065037B2 JPH065037B2 JP62229760A JP22976087A JPH065037B2 JP H065037 B2 JPH065037 B2 JP H065037B2 JP 62229760 A JP62229760 A JP 62229760A JP 22976087 A JP22976087 A JP 22976087A JP H065037 B2 JPH065037 B2 JP H065037B2
- Authority
- JP
- Japan
- Prior art keywords
- crankshaft
- rotating body
- balancer
- driving
- operating mechanism
- 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.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
- F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
- F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
- F02B2275/06—Endless member is a belt
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
- F02B2275/20—SOHC [Single overhead camshaft]
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、ベルト，チェーン等を介してクランクシャフ
トの回転力を動弁機構，バランサーおよびその他の補機
に伝達するためのエンジンの補機伝動機構に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an accessory transmission mechanism of an engine for transmitting the rotational force of a crankshaft to a valve mechanism, a balancer and other accessories via a belt, a chain and the like. It is about.
従来技術 例えば、特公昭56-47424号公報に示されるように、自動
車に搭載される直列多気筒エンジンはピストン等の往復
質量による起振力を打消すためにバランサーを備えてい
るが、クランクシャフトの回転に同期してバランサーを
回転させるのみならず、吸排気弁を周期的に開閉させる
ためのバルブ開閉カムを回転させ、しかもオイルポンプ
等の補機をも同時に回転させる必要上、クランクシャフ
トとバランサー，バルブ開閉カムおよび補機等をベルト
またはチエン等の伝動機構でもって連結していた。2. Description of the Related Art For example, as disclosed in Japanese Patent Publication No. 56-47424, an in-line multi-cylinder engine mounted on an automobile is equipped with a balancer to cancel the vibration force due to the reciprocating mass of a piston or the like. In addition to rotating the balancer in synchronization with the rotation of the crankshaft, it is necessary to rotate the valve opening / closing cam for periodically opening / closing the intake / exhaust valve, and also to rotate auxiliary equipment such as an oil pump. The balancer, valve opening / closing cam, auxiliary machinery, etc. were connected by a transmission mechanism such as a belt or chain.
発明が解決しようとする問題点 ところが、クランクシャフトの動力でもって回転すべき
機器の数が多くなり、、その配置位置が四方へ分散して
環状に近い配列関係である状態において、１本のベルト
またはチエンでこれらを相互に連結しようとすると、プ
ーリまたはスプロケットに対するベルトまたはチエンの
巻付け角度が減少し、確実な動力伝達が行なわれ難い場
合がある。The problem to be solved by the invention is that one belt is used when the number of devices to be rotated by the power of the crankshaft is large and the arrangement positions are dispersed in four directions and are in an annular shape. Alternatively, if the chains are used to connect these to each other, the winding angle of the belt or chain with respect to the pulley or sprocket may be reduced, and reliable power transmission may be difficult to perform.
このため、クランクシャフトよりこれらの機器への動力
の伝達には、複数個の伝動機構を適用したエンジンが多
かったが、機構が複雑化しかつエンジンの全長が長くな
ることが避けられなかった。For this reason, in order to transmit the power from the crankshaft to these devices, there are many engines to which a plurality of transmission mechanisms are applied, but it is inevitable that the mechanism becomes complicated and the total length of the engine becomes long.
問題点を解決するための手段および作用効果 本発明は、このような難点を克服したエンジンの補機伝
動機構の改良に係り、クランクシャフトの回転でもって
可撓性無端部材を介し、動弁機構、バランサーおよびそ
の他補機を駆動せしめるエンジンにおいて、前記クラン
クシャフトの一端にプーリ、スプロケット等の回転体が
一体に設けられ、該クランクシャフト回転体の上方に前
記動弁機構を駆動させるための回転体が配設され、該ク
ランクシャフトと動弁機構駆動用回転体との間にて、該
クランクシャフトおよび動弁機構駆動用回転体を結ぶ線
に対し一側にバランサーおよびその他補機が配設される
とともにその反対側にテンショナーが配設され、前記バ
ランサーは前記その他補機に対し下方でかつ前記クラン
クシャフトおよび動弁機構駆動用回転体を結ぶ線寄りに
配設され、前記クランクシャフト回転体と動弁機構駆動
用回転体とその他補機駆動用回転体とに前記可撓性無端
部材の内面が当接されるとともに、前記バランサー駆動
用回転体とテンショナーとに該可撓性無端部材の外面が
当接される如く、該可撓性無端部材が、前記クランクシ
ャフト回転体、バランサー駆動用回転体、その他補機駆
動用回転体、動弁機構駆動用回転体およびテンショナー
に架渡されたことを特徴とするものである。The present invention relates to an improvement in an auxiliary machine power transmission mechanism of an engine which overcomes the above-mentioned problems, and a valve operating mechanism through a flexible endless member by rotation of a crankshaft. In an engine for driving a balancer and other accessories, a rotary body such as a pulley and a sprocket is integrally provided at one end of the crankshaft, and a rotary body for driving the valve mechanism above the crankshaft rotary body. Is provided, and a balancer and other auxiliary equipment are provided on one side of a line connecting the crankshaft and the valve operating mechanism driving rotating body between the crankshaft and the valve operating mechanism driving rotating body. A balancer is provided on the opposite side of the crankshaft and the valve drive mechanism below the other accessories. The inner surface of the flexible endless member is abutted on the crankshaft rotating body, the valve operating mechanism driving rotating body, and the other auxiliary machine driving rotating body. The flexible endless member is used for driving the crankshaft rotating body, the balancer driving rotating body, and other auxiliary machinery so that the outer surface of the flexible endless member contacts the balancer driving rotating body and the tensioner. It is characterized in that it is mounted on a rotary body, a rotary body for driving a valve mechanism and a tensioner.
本発明は前記したように構成されるので、クランクシャ
フトが回転すると、可撓性無端部材を介してバランサ
ー、その他補機および動弁機構が一斉に回転駆動され
る。Since the present invention is configured as described above, when the crankshaft rotates, the balancer, other auxiliaries, and the valve operating mechanism are simultaneously driven to rotate via the flexible endless member.
また本発明では、クランクシャフトと動弁機構駆動用回
転体との間に、バランサー、その他補機およびテンショ
ナーを配設したため、前記可撓性無端部材が必要最小限
に短縮するとともにエンジンがコンパクト化され、その
結果、バランサーのタイミングずれが可及的に減少する
とともに、コストダウンが可能となる。Further, in the present invention, since the balancer, other accessories and the tensioner are arranged between the crankshaft and the rotating body for driving the valve mechanism, the flexible endless member is shortened to the minimum necessary and the engine is made compact. As a result, the timing deviation of the balancer can be reduced as much as possible and the cost can be reduced.
さらに本発明においては、前記クランクシャフトおよび
動弁機構駆動用回転体を結ぶ線とクランクシャフトとに
近い位置に前記バランサーを配置するとともに、前記ク
ランクシャフトおよび動弁機構駆動用回転体を結ぶ線と
同じ側でかつクランクシャフトとより離れた位置に前記
その他補機を配置し、該その他補機駆動用回転体の外側
方から該その他補機駆動用回転体に前記可撓性無端部材
の内面を当接するとともに、前記その他補機駆動用回転
体より内側のバランサー駆動用回転体に前記可撓性無端
部材の外面を当接したため、前記その他補機駆動用回転
体とバランサー駆動用回転体とに充分大きな巻付け角を
取ることができ、しかも前記可撓性無端部材の内面およ
び外面からその他補機およびバランサーに分散して動力
を伝達することができ、しかもその他補機の下方空間に
バランサーを配置したことによってスペースの有効利用
を図ることができる。Furthermore, in the present invention, the balancer is arranged at a position close to a line connecting the crankshaft and the valve operating mechanism driving rotating body and a line connecting the crankshaft and the valve operating mechanism driving rotating body. The other accessory is arranged on the same side and at a position farther from the crankshaft, and the inner surface of the flexible endless member is provided from the outer side of the other accessory drive rotating body to the other accessory drive rotating body. Since the outer surface of the flexible endless member is brought into contact with the balancer driving rotary body inside the other auxiliary machinery driving rotary body, the other auxiliary machinery driving rotary body and the balancer driving rotary body are brought into contact with each other. A sufficiently large wrapping angle can be obtained, and power can be transmitted from the inner and outer surfaces of the flexible endless member to other auxiliary machines and balancers. Can, moreover it is possible to effectively utilize the space by placing the balancer lower space of other auxiliaries.
さらにまた本発明では、クランクシャフトに接近してバ
ランサーを配置し、可撓性無端部材の内面をクランクシ
ャフト回転体に当接するとともに該可撓性無端部材の外
面をバランサー駆動用回転体に当接したため、何等の逆
転機構を必要とせずにクランクシャフトの回転方向に対
してバランサーを逆転することがでるとともにバランサ
ーの同期ずれと回転むらを減少させることができる。Furthermore, in the present invention, the balancer is arranged close to the crankshaft, the inner surface of the flexible endless member abuts the crankshaft rotating body, and the outer surface of the flexible endless member abuts the balancer driving rotating body. Therefore, it is possible to reverse the balancer with respect to the rotation direction of the crankshaft without requiring any reverse rotation mechanism, and it is possible to reduce synchronization deviation and rotational unevenness of the balancer.
実施例 以下図面に図示された本発明の一実施例について説明す
る。Embodiment One embodiment of the present invention illustrated in the drawings will be described below.
自動車に搭載されるエンジン１は直列４気筒エンジンで
あって、エンジン１はシリンダブロック２とシリンダヘ
ッド３とヘッドカバー４とを備え、シリンダブロック２
に直列に形成されたシリンダ５に、図示されないピスト
ンが摺動自在に嵌装されている。The engine 1 mounted on the automobile is an in-line 4-cylinder engine, and the engine 1 includes a cylinder block 2, a cylinder head 3, and a head cover 4, and the cylinder block 2
A cylinder (not shown) is slidably fitted in a cylinder 5 formed in series with the piston.
またシリンダブロック２の下端とクランクケース６とに
クランクシャフト７が回転自在に挾持され、クランクシ
ャフト７と図示されないピストンとはコネクティングロ
ッド（図示されず）を介して相互に連結され、クランク
シャフト７の前端には歯付きドライブプーリ８（以下ど
のプーリーも歯付きであるので「歯付き」を省略する）
が一体に形成されている。A crankshaft 7 is rotatably held between the lower end of the cylinder block 2 and the crankcase 6, and the crankshaft 7 and a piston (not shown) are connected to each other via a connecting rod (not shown). Toothed drive pulley 8 at the front end (Hereinafter, all pulleys have teeth, so "toothed" is omitted)
Are integrally formed.
さらにシリンダヘッド３には図示されない吸排気弁を間
欠的に規則正しく開閉させるための動弁機構９が配設さ
れ、この動弁機構９のカム軸10はクランクシャフト７の
鉛直上方に配置され、カム軸10の前端にドライブプーリ
８の２倍の歯数のカム駆動用プーリ11が一体に嵌着され
ている。Further, the cylinder head 3 is provided with a valve mechanism 9 for intermittently and regularly opening and closing an intake / exhaust valve, not shown, and a cam shaft 10 of the valve mechanism 9 is disposed vertically above the crankshaft 7, A cam driving pulley 11 having twice the number of teeth of the drive pulley 8 is integrally fitted to the front end of the shaft 10.
さらにまたシリンダブロック２の一側（第１図で左側）
には、エンジン１の往復質量による起振力を打消すバラ
ンサー12がクランクシャフト７と平行に配設され、その
上方外側にはシリンダブロック２およびシリンダヘッド
３内に形成された冷却水通路17に冷却水を供給してシリ
ンダ５を冷却し、シリンダ５と熱交換されて加熱された
冷却水を図示されないラジエータに送ってこれを冷却し
た後、再び冷却水通路17に循環させるための冷却水ポン
プ15が配設され、冷却水ポンプ15にポンプ駆動用プーリ
16が設けられている。Furthermore, one side of the cylinder block 2 (left side in FIG. 1)
Is provided with a balancer 12 for canceling the excitatory force due to the reciprocating mass of the engine 1 in parallel with the crankshaft 7, and above the cooling water passage 17 formed in the cylinder block 2 and the cylinder head 3 above the crankshaft 7. A cooling water pump for supplying cooling water to cool the cylinder 5 and sending the cooling water which has been heated by the heat exchange with the cylinder 5 to a radiator (not shown) to cool the cooling water and then to circulate the cooling water again in the cooling water passage 17. 15 is arranged, and the cooling water pump 15 has a pulley for driving the pump.
16 are provided.
さらにシリンダブロック２の他側（第１図で右側）には
テンショナー14が配設されており、これらドライブプー
リ８，テンショナー14，カム駆動用プーリ11，ポンプ駆
動用プーリ16およびバランサー駆動用プーリ13は同一鉛
直面内に位置するように配置されている。Further, a tensioner 14 is arranged on the other side (right side in FIG. 1) of the cylinder block 2, and these drive pulley 8, tensioner 14, cam drive pulley 11, pump drive pulley 16 and balancer drive pulley 13 are provided. Are arranged so as to be located within the same vertical plane.
またこれらドライブプーリ８，カム駆動用プーリ11およ
びポンプ駆動用プーリ16に無端両歯ベルト18の内面が接
し、かつバランサー駆動用プーリ13およびテンショナー
14に無端両歯ベルト18の外面が接するように、１本の無
端両歯ベルト18がドライブプーリ８，テンショナー14，
カム駆動用プーリ11，ポンプ駆動用プーリ16およびバラ
ンサー駆動用プーリ13に架渡されている。Further, the inner surfaces of the endless double-toothed belt 18 are in contact with the drive pulley 8, the cam driving pulley 11, and the pump driving pulley 16, and the balancer driving pulley 13 and the tensioner are provided.
One endless double toothed belt 18 is connected to the drive pulley 8, tensioner 14, tensioner 14, so that the outer surface of the endless double toothed belt 18 contacts 14
It is bridged over a cam driving pulley 11, a pump driving pulley 16 and a balancer driving pulley 13.
図示の実施例では前記したように、無端両歯ベルト18は
カム駆動用プーリ11よりポンプ駆動用プーリ16，バラン
サー駆動用プーリ13，ドライブプーリ８およびテンショ
ナー14へと千鳥状に架渡されているので、カム駆動用プ
ーリ11，ポンプ駆動用プーリ16，バランサー駆動用プー
リ13およびドライブプーリ８に対する無端両歯ベルト18
の巻付け角が充分大きくなり、クランクシャフト７の動
力が動弁機構９，バランサー12，冷却水ポンプ15に確実
に伝達されるとともに無端両歯ベルト18に局部的に大き
な負担が加わらず無端両歯ベルト18の耐久性が高い。In the illustrated embodiment, as described above, the endless double toothed belt 18 is staggered from the cam driving pulley 11 to the pump driving pulley 16, the balancer driving pulley 13, the drive pulley 8 and the tensioner 14. Therefore, the cam driving pulley 11, the pump driving pulley 16, the balancer driving pulley 13 and the drive pulley 8 are endless double toothed belts 18
The winding angle of the crankshaft 7 is sufficiently large, the power of the crankshaft 7 is reliably transmitted to the valve operating mechanism 9, the balancer 12, and the cooling water pump 15, and the endless double-toothed belt 18 is not locally burdened with a large load. The durability of the tooth belt 18 is high.
図面は本発明に係るエンジンの補機伝動機構の一実施例
を図示した正面図である。 １…エンジン、２…シリンダブロック、３…シリンダヘ
ッド、４…ヘッドカバー、５…シリンダ、６…クランク
ケース、７…クランクシャフト、８…ドライブプーリ、
９…動弁機構、10…カム軸、11…カム駆動用プーリ、12
バランサー、13…バランサー駆動用プーリ、14…テンシ
ョナー、15…冷却水ポンプ、16…ポンプ駆動用プーリ、
17…冷却水通路、18…無端両歯ベルト。The drawing is a front view illustrating an embodiment of an auxiliary machine power transmission mechanism of an engine according to the present invention. 1 ... Engine, 2 ... Cylinder block, 3 ... Cylinder head, 4 ... Head cover, 5 ... Cylinder, 6 ... Crank case, 7 ... Crank shaft, 8 ... Drive pulley,
9 ... Valve operating mechanism, 10 ... Cam shaft, 11 ... Cam driving pulley, 12
Balancer, 13 ... Balancer drive pulley, 14 ... Tensioner, 15 ... Cooling water pump, 16 ... Pump drive pulley,
17 ... Cooling water passage, 18 ... Endless double tooth belt.
Claims (1)
端部材を介し、動弁機構、バランサーおよびその他補機
を駆動せしめるエンジンにおいて、前記クランクシャフ
トの一端にプーリ、スプロケット等の回転体が一体に設
けられ、該クランクシャフト回転体の上方に前記動弁機
構を駆動させるための回転体が配設され、該クランクシ
ャフトと動弁機構駆動用回転体との間にて、該クランク
シャフトおよび動弁機構駆動用回転体を結ぶ線に対し一
側にバランサーおよびその他補機が配設されるとともに
その反対側にテンショナーが配設され、前記バランサー
は前記その他補機に対し下方でかつ前記クランクシャフ
トおよび動弁機構駆動用回転体を結ぶ線寄りに配設さ
れ、前記クランクシャフト回転体と動弁機構駆動用回転
体とその他補機駆動用回転体とに前記可撓性無端部材の
内面が当接されるとともに、前記バランサー駆動用回転
体とテンショナーとに該可撓性無端部材の外面が当接さ
れる如く、該可撓性無端部材が、前記クランクシャフト
回転体、バランサー駆動用回転体、その他補機駆動用回
転体、動弁機構駆動用回転体およびテンショナーに架渡
されたことを特徴とするエンジンの補機伝動機構。1. An engine for driving a valve operating mechanism, a balancer and other auxiliary equipment through a flexible endless member by the rotation of a crankshaft, wherein a rotary body such as a pulley and a sprocket is integrally formed at one end of the crankshaft. A rotating body for driving the valve operating mechanism is provided above the crankshaft rotating body, and the crankshaft and the valve operating mechanism are provided between the crankshaft and the valve operating mechanism driving rotating body. A balancer and other auxiliaries are arranged on one side and a tensioner is arranged on the other side with respect to the line connecting the mechanism driving rotating bodies, and the balancer is below the other auxiliaries and the crankshaft and The crankshaft rotating body, the valve operating mechanism driving rotating body, and other auxiliary equipment drives are arranged near the line connecting the valve operating mechanism driving rotating bodies. The flexible endless member is arranged so that the inner surface of the flexible endless member abuts on the rotating body and the outer surface of the flexible endless member abuts on the balancer driving rotating body and the tensioner. Is laid over the crankshaft rotating body, the balancer driving rotating body, the other auxiliary device driving rotating body, the valve mechanism driving rotating body, and the tensioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62229760A JPH065037B2 (en) | 1987-09-16 | 1987-09-16 | Engine accessory drive mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62229760A JPH065037B2 (en) | 1987-09-16 | 1987-09-16 | Engine accessory drive mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6473130A JPS6473130A (en) | 1989-03-17 |
| JPH065037B2 true JPH065037B2 (en) | 1994-01-19 |
Family
ID=16897243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62229760A Expired - Fee Related JPH065037B2 (en) | 1987-09-16 | 1987-09-16 | Engine accessory drive mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH065037B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10161414A1 (en) * | 2001-12-13 | 2003-07-10 | Ina Schaeffler Kg | Chain drive for an internal combustion engine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6097329U (en) * | 1983-12-07 | 1985-07-03 | 本田技研工業株式会社 | Timing transmission in internal combustion engines |
| JPS6271341U (en) * | 1985-10-23 | 1987-05-07 |
-
1987
- 1987-09-16 JP JP62229760A patent/JPH065037B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6473130A (en) | 1989-03-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |