JPH0629526B2 - Internal rotation type rotary pump drive device for internal combustion engine - Google Patents
Internal rotation type rotary pump drive device for internal combustion engineInfo
- Publication number
- JPH0629526B2 JPH0629526B2 JP62266040A JP26604087A JPH0629526B2 JP H0629526 B2 JPH0629526 B2 JP H0629526B2 JP 62266040 A JP62266040 A JP 62266040A JP 26604087 A JP26604087 A JP 26604087A JP H0629526 B2 JPH0629526 B2 JP H0629526B2
- Authority
- JP
- Japan
- Prior art keywords
- pump
- case
- internal combustion
- outer rotor
- combustion engine
- 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
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
- F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Compressor (AREA)
Description
【発明の詳細な説明】 Ａ．発明の目的 (1)産業上の利用分野 本発明は内燃機関において、オイルポンプ等に使用され
るトロコイドポンプ、ギヤポンプ等の内接型ロータリポ
ンプの駆動装置に関するものである。Detailed Description of the Invention A. Object of the Invention (1) Field of Industrial Application The present invention relates to a drive device for an internal rotary pump such as a trochoid pump or a gear pump used in an oil pump or the like in an internal combustion engine.
(2)従来の技術 従来の内燃機関において、潤滑用オイルポンプとしてト
ロコイドポンプを駆動する場合には、例えば実公昭60-2
4882号公報に開示される如く、内燃機関のクランク軸に
よりインナロータと一体のポンプ軸を駆動するようにし
ているが、斯かる構造では、上記インナロータと一体的
に回転するポンプ軸の、ポンプケース一側より突出させ
た軸端に従動輪を固着し、これに伝動帯を介してクラン
ク軸を連動させているので、インナロータやポンプ軸と
は別個に従動輪を用意する必要があって部品点数が多く
なり、しかもポンプがポンプ軸方向に大きくなって内燃
機関全体の大型化の原因となるという問題がある。(2) Conventional technology In the case of driving a trochoid pump as an oil pump for lubrication in a conventional internal combustion engine, for example, Jikken Sho-2
As disclosed in Japanese Patent No. 4882, the crankshaft of the internal combustion engine drives the pump shaft integrated with the inner rotor. However, in such a structure, the pump shaft that rotates integrally with the inner rotor has a single pump case. Since the driven wheel is fixed to the shaft end protruding from the side and the crankshaft is interlocked with this via the power transmission band, it is necessary to prepare the driven wheel separately from the inner rotor and pump shaft, and the number of parts is reduced. There is a problem that the number of pumps increases and the size of the pump increases in the axial direction of the pump, which causes an increase in size of the entire internal combustion engine.
そこで斯かる問題を解決するために、例えば特公昭47-1
0570号公報に開示される如く、ロータリポンプのアウタ
ロータの外周面一端部に、該外周面と等径の被動歯車を
一体に形成し、この被動歯車をクランク軸と一体の駆動
歯車と直接噛合させるようにしたものが既に提案されて
いる。Therefore, in order to solve such a problem, for example, Japanese Patent Publication No.
As disclosed in Japanese Patent Laid-Open No. 0570, a driven gear having the same diameter as the outer peripheral surface is integrally formed at one end of the outer peripheral surface of the outer rotor of the rotary pump, and the driven gear is directly meshed with a drive gear integrated with a crankshaft. Those that have been done have already been proposed.
(3)発明が解決しようとする課題 ところが上記提案のものでは、上記構造に由来して次の
ような種々の問題がある。(3) Problems to be Solved by the Invention However, the above-mentioned proposal has various problems as follows due to the above structure.
アウタロータの外周面一端部に、その外周面より外方
に突出させることなく（即ち等径に）被動歯車を歯切り
することは加工技術上非常に難しい。しかも該一端部に
歯切り部があることで、アウタロータ内部から該歯切り
部側へのオイル漏れが起こり易くなり、即ち該歯切り部
とアウタロータ内部間は、該歯切り部に隣接するアウタ
ロータ一端面とこれに摺接するポンプケース（板２７）
内面との協働による端面シール部だけを挟んで近接して
いるから、該端面シール部を通してオイルが漏れ易くな
って、それだけポンプ効率が低下する。尚、斯かる端面
シール部の加工精度を上げることは一般的に容易でな
い。It is very difficult in terms of processing technology to gear-cut the driven gear at one end of the outer peripheral surface of the outer rotor without projecting outward from the outer peripheral surface (that is, to have an equal diameter). Moreover, since the gear cutting portion is provided at the one end portion, oil leakage from the inside of the outer rotor to the gear cutting portion side easily occurs, that is, between the gear cutting portion and the inside of the outer rotor, the outer rotor first adjacent to the gear cutting portion is provided. End face and pump case (plate 27) in sliding contact with this
Since they are close to each other with only the end face seal portion in cooperation with the inner surface, oil easily leaks through the end face seal portion, and the pump efficiency is reduced accordingly. Incidentally, it is generally not easy to improve the processing accuracy of such an end face seal portion.
ポンプをクランク軸に近接配置する必要があるためポ
ンプの設置の自由度が狭められ、またアウタロータと一
体の上記被動歯車がアウタロータと等径であるため、該
被動歯車とクランク軸側の駆動歯車との歯数比、即ち変
速比の選定自由度も狭められる。Since it is necessary to dispose the pump close to the crankshaft, the degree of freedom in installing the pump is narrowed. Also, since the driven gear integrated with the outer rotor has the same diameter as the outer rotor, the driven gear and the drive gear on the crankshaft side are The degree of freedom in selecting the gear ratio, that is, the gear ratio, is also narrowed.
上記被動歯車はアウタロータ外周面の軸方向一端部に
偏在しているため、駆動歯車との噛合によりアウタロー
タが偏荷重を受け、その外周面とポンプケース内周面と
の間の回転摺動部が偏摩耗する虞れがある。Since the driven gear is unevenly distributed on one end portion in the axial direction of the outer peripheral surface of the outer rotor, the outer rotor receives an eccentric load due to the engagement with the drive gear, and the rotary sliding portion between the outer peripheral surface and the inner peripheral surface of the pump case. There is a risk of uneven wear.
本発明は上記に鑑み提案されたもので、従来のものの上
記問題点を全て解決できるようにした構成簡単な、内燃
機関の内接型ロータリポンプ駆動装置を提供することを
目的とするものである。The present invention has been proposed in view of the above, and an object thereof is to provide an internal combustion type rotary pump drive device for an internal combustion engine, which has a simple structure and can solve all the above problems of the conventional one. .
Ｂ．発明の構成 (1)課題を解決するための手段 上記目的を達成するために本発明は、内燃機関のクラン
クケースにトロコイドポンプ等の内接型ロータリポンプ
のポンプケースを装着すると共に、内燃機関のクランク
軸により同ポンプを駆動するようにしたものにおいて、
前記ポンプケースを、相互間が着脱可能に接合される一
対のケース半体より構成し、その両ケース半体の相対向
する内面間に形成されるポンプ室に、インナロータと、
このインナロータと協働してポンプ作用を発揮し外周部
が円筒状に形成されるアウタロータとを収容して、それ
らロータの軸方向両端面を、前記両ケース半体の内端面
にそれぞれ形成した軸方向受け面にそれぞれ摺接させる
と共に、該アウタロータ外周面の両端部を、前記両ケー
ス半体の内周面にそれぞれ形成した周方向受け面にそれ
ぞれ回転自在に嵌合させ、前記アウタロータ外周面の軸
方向中央部に従動輪を一体に突設して、この従動輪と、
クランク軸に固定の駆動輪との間を、それら間に懸回し
た無端伝動帯を介して連動連結したことを特徴とする。B. Means for Solving the Problems (1) Means for Solving the Problems To achieve the above object, the present invention provides a crankcase of an internal combustion engine with a pump case of an internal rotary pump, such as a trochoid pump, and an internal combustion engine. In the case where the pump is driven by the crankshaft,
The pump case is composed of a pair of case halves that are detachably joined to each other, and a pump chamber formed between the inner surfaces of the case halves facing each other, an inner rotor, and
A shaft that accommodates an outer rotor that cooperates with the inner rotor to exert a pumping action and has a cylindrical outer peripheral portion, and axially opposite ends of the rotor are formed on inner end surfaces of the case halves, respectively. The outer rotor outer circumferential surface is slidably contacted with the outer rotor outer circumferential surface, and both ends of the outer rotor outer circumferential surface are rotatably fitted to the circumferential direction receiving surfaces formed on the inner circumferential surfaces of the case halves, respectively. A driven wheel is integrally provided so as to project in the central portion in the axial direction, and this driven wheel is
It is characterized in that the driving wheels fixed to the crankshaft are interlocked with each other via an endless transmission belt suspended between them.
(2)作用 上記構成によれば、従動輪とポンプのアウタロータとが
一体化されて同ロータの軸方向幅内に収められるため、
それだけポンプ駆動装置の部品点数が削減され、しかも
ポンプがその軸方向に短縮される。(2) Action According to the above configuration, the driven wheel and the outer rotor of the pump are integrated and housed within the axial width of the same rotor.
As a result, the number of parts of the pump drive device is reduced, and the pump is shortened in the axial direction.
また上記アウタロータの外周面に上記従動輪を突設させ
た関係で、該従動輪に対する機械加工が容易であり、し
かも該従動輪のロータ外周面からの突出量を適宜選定す
れば、ロータ外周面の有効径を変えないで、該ロータと
一体の従動輪と駆動輪との間の変速比を容易に変えるこ
とができる。Further, since the driven wheel is projected on the outer peripheral surface of the outer rotor, the driven wheel can be easily machined, and the amount of protrusion of the driven wheel from the outer peripheral surface of the rotor can be appropriately selected. It is possible to easily change the gear ratio between the driven wheel and the drive wheel that are integral with the rotor without changing the effective diameter.
しかも上記従動輪をアウタロータ外周面の軸方向中央部
に位置させ、且つそのロータ外周面両端部を、両ケース
半体の内周面にそれぞれ形成される周方向受け面にそれ
ぞれ回転自在に嵌合させたことで、それらの嵌合部によ
る比較的高い周面シール効果が上記従動輪の軸方向両側
においてそれぞれ有効に発揮され、その結果、両ケース
半体の内端面にそれぞれ形成した軸方向受け面とアウタ
ロータの軸方向両端面との各摺接部による端面シール効
果とも相俟って、アウタロータ内部から従動輪側へのオ
イル漏れが極めて効果的に防止される。また伝動中、無
端伝動帯の張力が従動輪に強く作用しても、該従動輪付
きアウタロータを両ケース半体の前記周方向受け面にそ
れぞれバランスよく両持ち支持させることができる。In addition, the driven wheel is located at the axial center of the outer peripheral surface of the outer rotor, and both ends of the outer peripheral surface of the rotor are rotatably fitted to the peripheral receiving surfaces formed on the inner peripheral surfaces of both case halves. By doing so, the relatively high circumferential surface sealing effect of these fitting parts is effectively exerted on both sides in the axial direction of the driven wheel, and as a result, the axial bearings formed on the inner end surfaces of both case halves, respectively. In combination with the end face sealing effect by the sliding contact portions between the surface and both axial end faces of the outer rotor, oil leakage from the inner side of the outer rotor to the driven wheel side is extremely effectively prevented. Further, during transmission, even if the tension of the endless transmission band strongly acts on the driven wheel, the outer rotor with the driven wheel can be supported on both sides of the case halves in a well-balanced manner.
更にクランク軸側の駆動輪とポンプ側の従動輪との間を
無端伝動帯によって連動させているため、そのクランク
軸とポンプ軸の軸間距離を比較的自由に選択することが
できる。Further, since the drive wheel on the crankshaft side and the driven wheel on the pump side are interlocked by the endless transmission band, the axial distance between the crankshaft and the pump shaft can be relatively freely selected.
(3)実施例 以下、図面により本発明をトロコイドポンプに実施した
場合の一実施例について説明する。(3) Example Hereinafter, one example in which the present invention is applied to a trochoid pump will be described with reference to the drawings.
内燃機関の機関本体Ｅのアッパケース１１とロアケース
１２とよりなるクランクケース１にはクランク軸２が回
転自在に支承される。前記クランク軸２の下方におい
て、クランクケース１のロアケース１２には、複数のボ
ルト３を以て潤滑用オイルポンプとして使用されるトロ
コイドポンプＰのポンプケース４が固着されている。Crankshaft 2 is rotatably supported on the upper case 1 1 and the lower case 1 2 a crankcase 1 comprising more of the engine body E of the engine. In the lower the crankshaft 2, the lower case 1 2 of the crank case 1, the pump casing 4 trochoid pump P used as a lubricating oil pump is secured with a plurality of bolts 3.
前記ポンプケース４は、一対のケース半体としてのイン
ナケース半体４１及びアウタケース半体４２を合掌する
ように接合してその相互間を複数の連結ボルト５により
一体に結合することにより構成されている。それらケー
ス半体４１，４２の相対向面にはそれぞれ円形の凹部６
１，６２が形成されており、その両凹部６１，６２間に
形成されるポンプ室６には、インナケース半体４１に形
成したサクション通路７及びデリバリー通路８が連通さ
れている。そしてサクション通路７にはサクションパイ
プ９が、またデリバリー通路８にはデリバリーパイプ１
０がそれぞれ接続される。The pump case 4 by binding together by inner case half 4 1 and joining a plurality of connecting bolts 5 between the mutually to twofold the outer case half 4 2 as a pair of casing halves It is configured. A circular recess 6 is formed on each of the facing surfaces of the case halves 4 1 and 4 2.
1 and 6 2 are formed, and a suction passage 7 and a delivery passage 8 formed in the inner case half body 4 1 are communicated with the pump chamber 6 formed between the both recesses 6 1 and 6 2 . . A suction pipe 9 is provided in the suction passage 7, and a delivery pipe 1 is provided in the delivery passage 8.
0 is connected respectively.
前記ポンプ室６内には、トロコイドポンプＰのインナロ
ータ１１とアウタロータ１２とが収容され、インナロー
タ１１と一体のポンプ軸１３はポンプケース４に回転自
在に支承される。前記インナロータ１１及びアウタロー
タ１２は、それらの回転軸方向両端面（第２図で左右両
端面）を、前記両凹部６１，６２の相対向する内端面に
それぞれ形成した軸方向受け面６ｂ１，６ｂ２にそれぞ
れ相対回転自在に摺接させており、また特にアウタロー
タ１２の外周部は円筒状に形成されていて、その外周面
の両端部１２１，１２２は、前記両凹部６１，６２の内
周面にそれぞれ形成した周方向受け面６ａ１，６ａ２に
回転自在に密接嵌合される。前記ポンプ軸１３は中空に
形成されており、該軸１３を縦通する支持ボルト１４が
ポンプケース４に固着される。An inner rotor 11 and an outer rotor 12 of the trochoid pump P are housed in the pump chamber 6, and a pump shaft 13 integrated with the inner rotor 11 is rotatably supported by the pump case 4. The inner rotor 11 and the outer rotor 12 have axially opposite end surfaces (both left and right end surfaces in FIG. 2) formed in axially opposite receiving surfaces 6b 1 of the recesses 6 1 , 6 2 , respectively. , 6b 2 are rotatably slidably contacted with each other, and in particular, the outer peripheral portion of the outer rotor 12 is formed in a cylindrical shape, and both end portions 12 1 , 12 2 of the outer peripheral surface of the outer rotor 12 have the above-mentioned concave portions 6 1 , 6 2 of the inner peripheral circumferential receiving surface were formed on the surface 6a 1, 6a 2 are rotatably closely fitted in. The pump shaft 13 is formed in a hollow shape, and a support bolt 14 extending vertically through the shaft 13 is fixed to the pump case 4.
前記アウタロータ１２の外周面の軸方向中央部には径方
向外方に突出する従動輪としての従動歯輪１５が一体に
形成される。この従動歯輪１５は、その上、下部分がポ
ンプケース４のポンプ室６の外周に形成した空隙部１６
１，１６２に収容され、またその左右両側部分がポンプ
ケース４より外方に露出している。A driven toothed wheel 15 as a driven wheel that projects radially outward is integrally formed in the axial center portion of the outer peripheral surface of the outer rotor 12. The driven tooth wheel 15 has a void portion 16 formed on the outer periphery of the pump chamber 6 of the pump case 4 in the upper and lower portions thereof.
1, 16 2 is housed in, and left and right side portions thereof are exposed outward from the pump case 4.
またクランク軸２のクランクケース４内の端部には、前
記従動歯輪１５よりも小径の、駆動輪としての駆動歯輪
１７が固着され、この駆動歯輪１７と従動歯輪１５間に
は、無端伝動帯としての無端状歯付ベルト１８が懸回さ
れる。クランク軸２が回転されると、駆動歯輪１７およ
び歯付ベルト１８を介して従動歯輪１５と一体のアウタ
ロータ１２が減速回転される。Further, a drive toothed wheel 17 as a drive wheel having a smaller diameter than the driven toothed wheel 15 is fixed to an end portion of the crankshaft 2 in the crank case 4, and a space between this driven toothed wheel 17 and the driven toothed wheel 15 is fixed. The endless toothed belt 18 as an endless transmission belt is suspended. When the crankshaft 2 is rotated, the outer rotor 12 integrated with the driven toothed wheel 15 is decelerated through the drive toothed wheel 17 and the toothed belt 18.
尚、図中２０はクランク軸２と図示しない動弁カム軸と
を連動する調時伝動機構、２１はサクションパイプ９に
連なるストレーナである。In the figure, reference numeral 20 is a timing transmission mechanism that interlocks the crankshaft 2 with a valve cam shaft (not shown), and 21 is a strainer connected to the suction pipe 9.
次にこの実施例の作用を説明すると、いま内燃機関の駆
動によりクランク軸２が回転されると、駆動歯輪１７お
よび無端状歯付ベルト１８を介して従動歯輪１５が回転
されるので、これと一体のアウタロータ１２も回転さ
れ、これに追従してインナロータ１１が回転される。こ
れによりトロコイドポンプＰが駆動され、オイル溜の潤
滑オイルをオイルストレーナ２１よりサクションパイプ
９およびサクション通路７を介してポンプ室６内に吸込
み、これを加圧してデリバリー通路８およびデリバリー
パイプ１０を介して図示しない内燃機関の被潤滑部に圧
送することができる。The operation of this embodiment will now be described. When the crankshaft 2 is rotated by driving the internal combustion engine, the driven toothed wheel 15 is rotated via the drive toothed wheel 17 and the endless toothed belt 18, The outer rotor 12 integrated with this is also rotated, and the inner rotor 11 is rotated following this. As a result, the trochoid pump P is driven, and the lubricating oil in the oil reservoir is sucked from the oil strainer 21 into the pump chamber 6 through the suction pipe 9 and the suction passage 7, and is pressurized to pass through the delivery passage 8 and the delivery pipe 10. Can be pressure-fed to a lubricated portion of an internal combustion engine (not shown).
ところで上記従動歯輪１５がアウタロータ１２の外周面
の軸方向中央部に位置しており、且つそのアウタロータ
１２の外周面両端部１２１，１２２が、両ケース半体４
１，４２内面の周方向受け面６ａ１，６ａ２にそれぞれ
回転自在に密接嵌合されているから、それらの嵌合部に
よる比較的高い周面シール効果が上記従動歯輪１５の軸
方向両側（第２図で左右両側）においてそれぞれ有効に
発揮される。従って、両ケース半体４１，４２内面の軸
方向受け面６ｂ１，６ｂ２とアウタロータ１２の軸方向
両端面との各摺接部による端面シール効果とも相俟っ
て、アウタロータ１２内部から従動歯輪１５側へのオイ
ル漏れが極めて効果的に防止され、ポンプ効率が向上す
る。By the way, the driven toothed wheel 15 is located at the axially central portion of the outer peripheral surface of the outer rotor 12, and both outer peripheral surface end portions 12 1 and 12 2 of the outer rotor 12 are formed in the two case halves 4.
Since the inner peripheral surfaces 1 and 4 2 are rotatably and closely fitted to the inner peripheral surface receiving surfaces 6a 1 and 6a 2 , respectively, a relatively high peripheral surface sealing effect due to the fitting portions is provided in the axial direction of the driven toothed wheel 15. Effectively exerted on both sides (both left and right in FIG. 2). Therefore, I both case halves 4 1, 4 2 inner surface of the axial receiving surface 6b 1, 6b 2 and the end face sealing effect both phases俟by Kakusuri contact portion between the axial end surfaces of the outer rotor 12, from the inside the outer rotor 12 Oil leakage to the driven toothed wheel 15 side is extremely effectively prevented, and pump efficiency is improved.
また伝動中、歯付ベルト１８の張力が従動歯輪１５に強
く作用しても、該従動歯輪１５付きアウタロータ１２を
両ケース半体４１，４２の前記周方向受け面６ａ１，６
ａ２内周面にそれぞれバランスよく両持ち支持させるこ
とができるため、アウタロータ１２とポンプケース４間
の回転摺動部における偏摩耗の発生を回避することがで
きる。Further, during transmission, even if the tension of the toothed belt 18 strongly acts on the driven toothed wheel 15, the outer rotor 12 with the driven toothed wheel 15 is mounted on the circumferential receiving surfaces 6a 1 , 6 of the case halves 4 1 , 4 2.
Since both can be supported on the inner peripheral surface of the a 2 in a well-balanced manner, it is possible to avoid occurrence of uneven wear in the rotary sliding portion between the outer rotor 12 and the pump case 4.
また前記ポンプＰはクランク軸２の下方に間隔をおいて
配設されているから、該ポンプＰとオイルパン２５内潤
滑油面とのヘッド差を極力小さくして、ポンプＰの立ち
上がりを早めることができる。Further, since the pump P is arranged below the crankshaft 2 with a gap, the head difference between the pump P and the lubricating oil surface in the oil pan 25 is minimized to accelerate the rising of the pump P. You can
尚、前記実施例において駆動歯輪１７、従動歯輪１５お
よび歯付ベルト１８の駆動系の代りに他の同効の巻掛式
伝動機構の使用が可能であり、たとえば駆動スプロケッ
ト、従動スプロケットおよびチエン、または駆動プー
リ、従動プーリおよびベルトであってもよい。It should be noted that, in the above-described embodiment, instead of the drive system of the driving toothed wheel 17, the driven toothed wheel 15 and the toothed belt 18, it is possible to use other similar winding type transmission mechanism, for example, a driving sprocket, a driven sprocket and It may be a chain, or a drive pulley, a driven pulley and a belt.
また前記トロコイドポンプＰはオイルポンプ以外のポン
プにも使用が可能である。The trochoid pump P can also be used for pumps other than the oil pump.
Ｃ．発明の効果 以上のように本発明によれば、ロータリポンプ駆動用従
動輪がポンプのアウタロータとが一体化されて同ロータ
の軸方向幅内に位置しているため、それだけポンプ駆動
装置の部品点数が削減され、しかもポンプがその軸方向
に短縮されて、内燃機関全体の同方向への小型化に寄与
することができる。C. As described above, according to the present invention, since the driven wheel for driving the rotary pump is integrated with the outer rotor of the pump and is positioned within the axial width of the rotor, the number of parts of the pump drive device is increased accordingly. And the pump is shortened in its axial direction, which can contribute to downsizing of the entire internal combustion engine in the same direction.
また上記アウタロータの外周面に上記従動輪を一体に突
設させたから、該従動輪に対する機械加工が容易であ
り、また該従動輪のアウタロータ外周面からの突出量を
適宜選定すれば、アウタロータ外周面の有効径を変えな
いで、該ロータと一体の従動輪と駆動輪との間の変速比
を容易に変えられ、その変速比選定の自由度を高めるこ
とができる。Further, since the driven wheel is integrally provided on the outer peripheral surface of the outer rotor, the driven wheel can be easily machined, and the outer rotor outer peripheral surface can be appropriately selected by selecting the protrusion amount of the driven wheel from the outer rotor outer surface. It is possible to easily change the gear ratio between the driven wheel and the drive wheel that are integrated with the rotor without changing the effective diameter, and it is possible to increase the degree of freedom in selecting the gear ratio.
しかも上記従動輪をアウタロータ外周面の軸方向中央部
に位置させ、且つそのアウタロータの外周面両端部を、
両ケース半体内周面にそれぞれ形成される周方向受け面
にそれぞれ回転自在に嵌合させているから、それらの嵌
合部による比較的高い周面シール効果が上記従動輪の軸
方向両側においてそれぞれ有効に発揮され、従って、両
ケース半体内端面にそれぞれ形成される軸方向受け面と
アウタロータの軸方向両端面との各摺接部による端面シ
ール効果とも相俟って、アウタロータ内部から従動輪側
へのオイル漏れを極めて効果的に防止することができ、
ポンプ効率の向上に大いに寄与し得る。また伝動中、無
端伝動帯の張力が従動輪に強く作用しても、該従動輪付
きアウタロータを両ケース半体の前記周方向受け面にそ
れぞれバランスよく両持ち支持させることができるか
ら、アウタロータとポンプケース間の回転摺動部の偏摩
耗防止にも効果的である。Moreover, the driven wheel is positioned at the central portion in the axial direction of the outer rotor outer peripheral surface, and both outer peripheral surface end portions of the outer rotor are
Since they are rotatably fitted to the circumferential receiving surfaces formed on the circumferential surfaces of both case halves, respectively, a relatively high circumferential surface sealing effect due to the fitting portions is provided on both sides in the axial direction of the driven wheel. Therefore, in combination with the end face sealing effect of the sliding contact portions between the axial receiving surfaces formed on the end surfaces of both case halves and the axial end surfaces of the outer rotor, the inner surface of the outer rotor is driven by the driven wheel side. It is possible to very effectively prevent oil leakage to
It can greatly contribute to the improvement of pump efficiency. Further, even if the tension of the endless transmission band acts strongly on the driven wheel during transmission, the outer rotor with the driven wheel can be supported on both sides of the case halves in the circumferential direction in a balanced manner. It is also effective in preventing uneven wear of the rotary sliding parts between the pump cases.
更にクランク軸側の駆動輪とポンプ側の従動輪との間を
無端伝動帯によって連動させることができるから、その
クランク軸とポンプ軸の軸間距離を比較的自由に選択す
ることが可能で、それだけポンプの設置の自由度が高め
られる。Furthermore, since the drive wheel on the crankshaft side and the driven wheel on the pump side can be linked by an endless transmission band, the axial distance between the crankshaft and the pump shaft can be relatively freely selected. As a result, the degree of freedom in installing the pump is increased.
図面は本発明装置の一実施例を示すもので、第１図はそ
の第２図Ｉ−Ｉ線に沿う縦断正面図、第２図は、第１図
II−II線に沿う縦断側面図である。 Ｐ……内接型ロータリポンプとしてのトロコイドポン
プ、２……クランク軸、４１……ケース半体としてのイ
ンナケース半体、４２……ケース半体としてのアウタケ
ース半体、６……ポンプ室、６ａ１，６ａ２……周方向
受け面、６ｂ１，６ｂ２……軸方向受け面、１２……ア
ウタロータ、１２１，１２２……外周面の両端部、１５
……従動輪としての従動歯輪、１７……駆動輪としての
駆動歯輪、１８……無端伝動帯としての歯付ベルトThe drawings show one embodiment of the device of the present invention. FIG. 1 is a longitudinal sectional front view taken along the line II of FIG. 2, and FIG.
It is a vertical side view taken along line II-II. Trochoid pump as P ...... inscribed type rotary pump, 2 ...... crankshaft 4 1 inner case half as ...... case halves, the outer case half as 4 2 ...... case halves, 6 ...... pump chamber, 6a 1, 6a 2 ...... circumferential receiving surface, 6b 1, 6b 2 ...... axial receiving surface, 12 ...... outer rotor, 12 1, 12 both end portions of 2 ...... outer peripheral surface, 15
... Driven wheel as driven wheel, 17 ... Drive toothed wheel as drive wheel, 18 ... Toothed belt as endless transmission belt
Claims (1)
イドポンプ等の内接型ロータリポンプ（Ｐ）のポンプケ
ース（４）を装着すると共に、内燃機関のクランク軸
（２）により同ポンプ（Ｐ）を駆動するようにしたもの
において、前記ポンプケース（４）を、相互間が着脱可
能に接合される一対のケース半体（４１，４２）より構
成し、それらケース半体（４１，４２）の相対向する内
面間に形成されるポンプ室（６）に、インナロータ（１
１）と、このインナロータ（１１）と協働してポンプ作
用を発揮し外周部が円筒状に形成されるアウタロータ
（１２）とを収容して、それらロータ（１１，１２）の
軸方向両端面を、前記両ケース半体（４１，４２）の内
端面にそれぞれ形成した軸方向受け面（６ｂ１，６
ｂ２）にそれぞれ摺接させると共に、該アウタロータ
（１２）外周面の両端部（１２１，１２２）を、前記両
ケース半体（４１，４２）の内周面にそれぞれ形成した
周方向受け面（６ａ１，６ａ２）にそれぞれ回転自在に
嵌合させ、前記アウタロータ（１２）外周面の軸方向中
央部に従動輪（１５）を一体に突設して、この従動輪
（１５）と、クランク軸（２）に固定の駆動輪（１７）
との間を、それら間に懸回した無端伝動帯（１８）を介
して連動連結したことを特徴とする、内燃機関の内接型
ロータリポンプ駆動装置。1. A crankcase (1) of an internal combustion engine is provided with a pump case (4) of an internal rotary pump (P) such as a trochoid pump, and the crankshaft (2) of the internal combustion engine pumps the pump case (P). ), The pump case (4) is composed of a pair of case halves (4 1 , 4 2 ) which are detachably joined to each other, and the case halves (4 1 , 4 2 ) in the pump chamber (6) formed between the inner surfaces facing each other.
1) and an outer rotor (12) that cooperates with the inner rotor (11) to exert a pumping action and has a cylindrical outer peripheral portion, and accommodates both end faces in the axial direction of the rotors (11, 12). Are formed on the inner end surfaces of the two case halves (4 1 , 4 2 ), respectively, and axial receiving surfaces (6 b 1 , 6
b 2 ), and both ends of the outer peripheral surface of the outer rotor (12) (12 1 , 12 2 ) are formed on the inner peripheral surfaces of the case halves (4 1 , 4 2 ), respectively. The direction receiving surfaces (6a 1 , 6a 2 ) are rotatably fitted to each other, and the driven wheel (15) is integrally provided so as to project from the central portion of the outer peripheral surface of the outer rotor (12) in the axial direction. ) And a drive wheel (17) fixed to the crankshaft (2)
And an internal combustion type rotary pump drive device for an internal combustion engine, characterized in that they are interlocked with each other via an endless transmission belt (18) suspended between them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62266040A JPH0629526B2 (en) | 1987-10-21 | 1987-10-21 | Internal rotation type rotary pump drive device for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62266040A JPH0629526B2 (en) | 1987-10-21 | 1987-10-21 | Internal rotation type rotary pump drive device for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01110818A JPH01110818A (en) | 1989-04-27 |
| JPH0629526B2 true JPH0629526B2 (en) | 1994-04-20 |
Family
ID=17425556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62266040A Expired - Fee Related JPH0629526B2 (en) | 1987-10-21 | 1987-10-21 | Internal rotation type rotary pump drive device for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0629526B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4622776B2 (en) * | 2005-09-22 | 2011-02-02 | スズキ株式会社 | Oil pump structure |
| JP7119904B2 (en) * | 2018-10-29 | 2022-08-17 | トヨタ自動車株式会社 | Control device for oil supply mechanism |
| CN109372726A (en) * | 2018-12-24 | 2019-02-22 | 沈阳远大压缩机有限公司 | Reciprocting piston compressor lubricating oil drive system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS597294U (en) * | 1982-07-07 | 1984-01-18 | 石川島芝浦機械株式会社 | Internal combustion engine lubricating oil pump device |
| JPS5949308A (en) * | 1982-09-13 | 1984-03-21 | Honda Motor Co Ltd | Oil piping structure of engine |
-
1987
- 1987-10-21 JP JP62266040A patent/JPH0629526B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01110818A (en) | 1989-04-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |