JPS6067793A - Variable volume internal gear pump - Google Patents

Variable volume internal gear pump

Info

Publication number
JPS6067793A
JPS6067793A JP17772783A JP17772783A JPS6067793A JP S6067793 A JPS6067793 A JP S6067793A JP 17772783 A JP17772783 A JP 17772783A JP 17772783 A JP17772783 A JP 17772783A JP S6067793 A JPS6067793 A JP S6067793A
Authority
JP
Japan
Prior art keywords
pump
rod
drive shaft
gear
external gear
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
JP17772783A
Other languages
Japanese (ja)
Other versions
JPH051398B2 (en
Inventor
Yasuyoshi Saegusa
三枝　康能
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries 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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP17772783A priority Critical patent/JPS6067793A/en
Publication of JPS6067793A publication Critical patent/JPS6067793A/en
Publication of JPH051398B2 publication Critical patent/JPH051398B2/ja
Granted legal-status Critical Current

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
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/10—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
    • F04C14/12—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using sliding valves
    • 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
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/06—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for stopping, starting, idling or no-load operation
    • 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
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/56—Number of pump/machine units in operation

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

PURPOSE:To reduce the price while to improve the durability by changing the number of drive of pump rotor through axial motion of rod incorported in drive shaft while gearing with the external gear thereby varying the delivery. CONSTITUTION:An axially slidable rod 31 is incorporated in a drive shaft 30 where axial projections 31a provided with proper interval on the outercircumference of said rod 31 are projected through an elongated hole 32 of shaft and engaged freely with a recess 11a made with correspondence to the inner face of central hole of a gear 11. Consequently, rotation of drive shaft 30 will cause rotation of external gear 11. Upon axial motion of rod 31, random number of external gears counted from the left end are disengaged from the projection 31a or engaged again, to change the number of drive of pump rotor 10 thus to vary the delivery of pump. Consequently, a low price, highly reliable pump having easily adjustable delivery can be obtained.

Description

【発明の詳細な説明】 （イ）産業上の利用分野 この発明は、吐出量を可変とした内接型の歯車ポンプ「
こ関する。[Detailed description of the invention] (a) Industrial application field This invention is an internal gear pump with variable discharge volume.
Regarding this.

（ロ）従来技術とその問題点 在来の可変容量ポンプは、ベーンタイプたけであり、そ
の構造は、第３図に示すようＩこ、固定されたドライブ
シャフト１でロータ２を回転させ、このロータに出没自
在に組入れたベーン３をカムリング４の内面に沿って移
動させることにより、隣接するベーン間の閉じ込め空間
容積が広くなる部分で吸入した油を、空間容積の狭くな
る部分で吐出させるようにしである。また、吐出量の調
整は、レバー５等によってカムリングを移動させ、ロー
タとカムリングの偏心量を変更することｌこよつて行う
ようにしである。(b) Prior art and its problems Conventional variable displacement pumps are of vane type only, and their structure is as shown in Fig. 3. A rotor 2 is rotated by a fixed drive shaft 1. By moving the vanes 3, which are retractably assembled into the rotor, along the inner surface of the cam ring 4, the oil sucked in at the part where the confined space volume between adjacent vanes is wide is discharged at the part where the space volume is narrow. It's Nishide. Further, the discharge amount is adjusted by moving the cam ring using the lever 5 or the like and changing the amount of eccentricity between the rotor and the cam ring.

しかしながら、このベーンタイプのポンプは、部品型々
を高精度に加工する必要があるので、コスト的に高くつ
く欠点かある。また、ベーンの滑り速度が大きいのでベ
ーンやカムリングが摩耗し易く、耐久性の而でも問題が
残る。かと云って、摩耗防止のため１こ、ｉ：１１Ｍ性
に優れる高価な材料を使えばコストをより高めることに
なる。However, this vane type pump has the disadvantage of being expensive because it requires high-precision machining of each component type. Furthermore, since the vane slides at a high speed, the vane and cam ring are likely to wear out, and durability remains a problem. On the other hand, if an expensive material with excellent 1:1M properties is used to prevent wear, the cost will further increase.

いう　問題点を解決するための手段 この発明の目的は、安価で信頼性が高く、吐出量の調整
も簡単なポンプを提供することにあり、この目的達成の
ため、本発明のポンプは外歯歯車と内歯歯車から成る内
接型ポンプロータの複数組を、リーイドプレートの吸入
・吐出ポートと同位置関係１こ吸入・吐ＩＪＩポートを
設けたミドルプレートを間に介して分割ハクジング内に
横一列に組込み、このポンプロータの駆動数を外歯歯車
に係合したドライブシャフト又はドライブシャフトｆこ
内蔵されたロッドの軸方向後■のによって変更すること
により、吐出量を変化させる構成としである。Means for Solving the Problems An object of the present invention is to provide a pump that is inexpensive, highly reliable, and whose discharge amount can be easily adjusted. Multiple sets of internal pump rotors consisting of gears and internal gears are placed in a split housing via a middle plate with suction and discharge IJI ports located in the same position as the suction and discharge ports of the lead plate. The pump rotors are assembled in a horizontal row, and the discharge amount is changed by changing the drive speed of the pump rotor by the drive shaft engaged with the external gear or by the axial direction of the built-in rod. be.

添付優１図及び第２図にこの発明の内接型歯車ポンプの
一例を示す。− 図中１０は、駆動側外歯歯車１１と従動側内歯歯車１２
を組合わせたポンプロータで、その複数組が分割ハウジ
ング２０内に横一列ｔこ組込まれている。An example of the internal gear pump of the present invention is shown in the attached Figures 1 and 2. - In the figure, 10 indicates the driving side external gear 11 and the driven side internal gear 12.
A plurality of sets of pump rotors are assembled in the divided housing 20 in a horizontal row.

ハウジング２０は、一端面ｌこロータ収納室２１ａ。The housing 20 has a rotor storage chamber 21a on one end surface.

２１ａを有する対のサイドグレー）２１．２１と、各ポ
ンプロータの中間に介在したミドルプレート２２と、こ
のプレート間に配したリングケース２３から成り、それ
ぞれのハウジング部品はボルト等を用いて液密ｌこ結合
されている。また、一方のサイドプレート２１には吸入
ポート２１１）と吐出ポー）２ＩＣが設けられ、ミドル
プレー１−２２　ｆこもそのポートと同位置関係になる
部位に同一大きさ形状の貫通した吸入ポート２２ｂと吐
出ポート２２Ｃが設けられている。21.21, a middle plate 22 interposed between each pump rotor, and a ring case 23 placed between these plates. Each housing part is secured liquid-tight using bolts or the like. l are connected. In addition, one side plate 21 is provided with a suction port 211) and a discharge port 2IC, and the middle play 1-22f also has a through suction port 22b of the same size and shape in the same positional relationship as the port. A discharge port 22C is provided.

なお、例示のサイドプレートを備えるポンプはロータの
組合せ数が２組のときにはリングケース２３を必要とし
ない。イ１１シ、サイドグレートのロータ収納室は、端
面の平担なプレートにリングケース２３を接合して形成
することも考えられ、このときはロータ数か２絹であっ
てもリングケースが使用される。In addition, the pump provided with the illustrated side plate does not require the ring case 23 when the number of rotor combinations is two. B11. The rotor storage chamber of the side grate may be formed by joining the ring case 23 to a plate with a flat end surface. In this case, the ring case is used even if the number of rotors is 2 or less. Ru.

次に、各ポンプロータの外歯歯車１１中心にｌｄ、軸受
２４どオイルシール２５を介してサイドプレート２１．
２１に支Ａ寺されるドライブシャフト３０を緩く挿〕Ｉ
Ｂシである。このドライブシャツｌ−１こは、軸方向に
スライドするロッド３１が内蔵され、このロツｌ’　外
周に適宜１ｉ’！＋］隔で設けたセレーション、キー等
の軸方向突条３１ａがシャフトの長孔３２より外部に突
出し、歯車１１の中心穴内面に対応して設けた凹所１１
　ａｌこ抜き差し自在に係合している。従って、ドライ
ブシャフト３０を回転させれば、外歯歯車１１が回転し
、それｔこ伴なって内歯歯車昏こも回転することになる
。また、ロツｌ’３１を軸方向【こ移動させると左端か
ら数えて任意数の外歯歯車１１と突条３１ａの係合が解
は又は再び孫春）、　ポンプロータ１０の田ス動数がを
ｈＡ−径つて、ポンプの吐出■′は、段階的にてはある
が変化する。Next, the side plate 21 is connected to the center of the external gear 11 of each pump rotor through the bearing 24 and the oil seal 25.
Loosely insert the drive shaft 30 that is attached to 21.
It is B. This drive shirt 1-1 has a built-in rod 31 that slides in the axial direction, and the rod 31 is attached to the outer circumference of the drive shirt 1i' as appropriate. Axial protrusions 31a such as serrations and keys provided at intervals of
Al is engaged so that it can be inserted and removed freely. Therefore, when the drive shaft 30 is rotated, the external gear 11 rotates, and the internal gear 11 also rotates accordingly. In addition, when the rotor l'31 is moved in the axial direction, the engagement between an arbitrary number of external gears 11 counted from the left end and the protrusion 31a is released, and the rotational speed of the pump rotor 10 is increased. As hA-diameter increases, the pump's discharge volume changes in stages.

ここで、ロッド３１の軸方向移動のため１こは、云う迄
もなくドライブシャフトの長孔３２を突条３１ａの長さ
よりも所定寸長くしておく必要ｆがある。また、ロッド
の突条３１ａｉこは、ドライブシャフトの回転状態下ｔ
こおいても、歯車１１に対する保合を円滑ならしめるた
め、コーナＮ噌・にチャンファ−を付しておくのがよい
。Here, in order to move the rod 31 in the axial direction, it goes without saying that it is necessary to make the elongated hole 32 of the drive shaft a predetermined length longer than the length of the protrusion 31a. In addition, the protrusion 31ai of the rod is under the rotating state of the drive shaft.
In this case as well, in order to ensure smooth engagement with the gear 11, it is preferable to chamfer the corner N.

さら１こ、この発明のポンプは、ドライブシャフトを軸
受２４１こ緩く挿入し、このシャフト１こ４ｉ（ｔ＋　
方向突条を設けることで、ドライブシャフト自体を軸方
向に移動させて吐出量を変化さぜることもてきる。Furthermore, in the pump of this invention, the drive shaft is loosely inserted into the bearing 241, and the shaft 1 is 4i(t+
By providing the directional protrusion, the drive shaft itself can be moved in the axial direction to change the discharge amount.

なお、軸方同に移動させたロッド又にドライブシャフト
は図示しない位置保持手段によって定位置に保持する。Note that the rod or drive shaft that has been moved in the same axial direction is held at a fixed position by a position holding means (not shown).

この位置保持手段はポンプと一体に設けてもよいが、例
えばポンプ叶用頂を自動制御する場合は、ロッド又はド
ライブシャフトの移動手段が必要になるので、それに位
置保持機能を持たせればよい。This position holding means may be provided integrally with the pump, but if, for example, the top of the pump is to be automatically controlled, a means for moving the rod or drive shaft is required, so it may be provided with a position holding function.

捷だ、ポンプ、ロータの組込数が増える場合は、ポンプ
の小型化のために、歯数差１枚のトロコイドあるいはサ
イクロイド歯形のポンプロータを使用するのが望ましい
。何故なら、上述の歯形のポンプロータは歯車１１．１
２問にタレセント（両歯車が非接触状態になる三日月空
間）が無いのでポンプ径が小さくなり、捷だ、それによ
ってミドルプレートの径及び肉１ワも小さくすることか
可能になるからである。When the number of rotors, pumps, and rotors to be assembled increases, it is desirable to use a trochoid or cycloid tooth-shaped pump rotor with one tooth difference in order to make the pump more compact. This is because the pump rotor with the above tooth profile has gear 11.1.
Since there is no talecent (a crescent moon space where both gears are in a non-contact state) in the second question, the pump diameter becomes smaller, which makes it possible to reduce the diameter and thickness of the middle plate.

（ホ）効果 以上説明したように、この全明にまれは、ベーンポンプ
に比へて製作の容易な内接型歯車ボンプロー夕の複数組
をミドルプレートを介して横一列に配置し、その駆動数
を変えることで吐出量を変化させるようにしたので安価
で耐久性に優へだ信頼性の高い可変容量ポンプが得られ
る。(E) Effect As explained above, this Zenmei is unique in that multiple sets of internal gear pump propellers, which are easier to manufacture than vane pumps, are arranged horizontally in a row through the middle plate, and their drive speed is By changing the discharge amount, a variable displacement pump that is inexpensive, has excellent durability, and is highly reliable can be obtained.

寸た、吐出量の調整は突条を有するロッド又はドライブ
シャフトを軸方向１こスライドさせればよく、至極簡単
で、その自動調整を可能にする。In fact, the discharge amount can be adjusted simply by sliding the rod having a protrusion or the drive shaft one step in the axial direction, which makes automatic adjustment possible.

さらに、歯数差１枚のトロコイドやナイフロイド歯形の
ポンプロータを採用したものは、ポンプロータの組合せ
数が増えても小径、短長のポンプが得られ、また、その
歯車の滑り速度は小さく、脈動も小さいため、耐久性が
より一層向上し、振動も小さくなる。Furthermore, pump rotors with a trochoid or kniferoid tooth profile with a difference in the number of teeth of one tooth can be used to obtain a pump with a small diameter and short length even if the number of pump rotor combinations increases, and the sliding speed of the gear is small. Since pulsation is also small, durability is further improved and vibration is also reduced.

なお、この発明のポンプは、一般的用途の１・１か、油
圧モータとして、或いは自動変速機片の可変容量ポンプ
としても使用でき、いずれの場合も安定した性能を発揮
する。The pump of the present invention can be used as a general purpose 1/1, as a hydraulic motor, or as a variable displacement pump for an automatic transmission component, and exhibits stable performance in either case.

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

第１図は、この発明のポンプを示す断面図、第２図は同
上のＩＩ−ＩＩ線に沿った断面図、第３図は公知のベー
ン方式可変容部ポンプを示す断面図である。 １０・・・ポンプロータ、１１・・・外歯歯車、１２・
・・内歯歯車、２０・・・ノ・クジング、２１．２１・
・・サイドプレート、２１ｂ・・・吸入ポート、２ＩＣ
・・・吐出ポート、２２・・・ミドルプレート、２２ｂ
・・・吸入ポート、２２Ｃ・・・吐出ポート、２３・・
・リングケース、２４・・・’１ｉｔｌ＋　受、２５・
・・オイルシール、３０・・・ドライブシャフト、３１
・・・ロッド、３１ａ・・・突条、３２・・・長孔。 特許出願人　住友電気工業株式会社 同　代理人　鎌　１）文　二FIG. 1 is a sectional view showing the pump of the present invention, FIG. 2 is a sectional view taken along the line II--II of the same, and FIG. 3 is a sectional view showing a known vane type variable volume pump. 10... Pump rotor, 11... External gear, 12.
・Internal gear, 20...No Kuzing, 21.21・
...Side plate, 21b...Suction port, 2IC
...Discharge port, 22...Middle plate, 22b
...Suction port, 22C...Discharge port, 23...
・Ring case, 24...'1itl+ Uke, 25・
...Oil seal, 30...Drive shaft, 31
...Rod, 31a... Projection, 32... Long hole. Patent applicant: Sumitomo Electric Industries, Ltd. Agent: Kama 1) Bun 2

Claims (2)

【特許請求の範囲】[Claims] （１）駆動側外歯歯車と従動側内歯歯車から成る内接型
ポンプロータの複数組を、ナイドプレートの吸入・吐出
ポートと同位置関係に吸入・吐出ポートを設けたミドル
プレートを間ｔこ介して上記サイドプレートを含む分割
ノ・クジング内に横一列に組込み、さらに、外歯歯車の
中心には、外周に軸方向突条を有するドライブシャフト
又は軸方向にスライドするロッドを内蔵し、このロッド
外周の軸方向突条を軸方向長孔５より外部に突出させた
ドライブシャフトを遠し、かつ上記ドライブシャフト又
はロッドの突条は外歯歯車の中心穴内面に対応して設け
た凹所に抜き差し自在に係合させ、該突条を有するドラ
イブシャフト又はロッドを軸方向に移動させることによ
り駆動されるポンプロータの数を変え、その吐出筒を変
化させるようにした可変容量内接型歯車ポンプ。(1) Multiple sets of internal pump rotors, each consisting of an external gear on the drive side and an internal gear on the driven side, are connected to a middle plate with suction and discharge ports located in the same position as the suction and discharge ports of the night plate. Through this, the external gear is assembled in a horizontal row in the split notch housing including the side plate, and furthermore, a drive shaft having an axial protrusion on the outer periphery or a rod that slides in the axial direction is built in the center of the external gear. , the axial protrusion on the outer periphery of this rod is located further away from the drive shaft that protrudes outward from the axial elongated hole 5, and the protrusion on the drive shaft or rod is provided corresponding to the inner surface of the center hole of the external gear. A variable capacity internal structure that can be freely inserted into and removed from a recess and moved in the axial direction of a drive shaft or rod having a protrusion to change the number of driven pump rotors and change the discharge cylinder. type gear pump. （２）　上記ポンプロータに、歯数差１枚のトロコイド
あるいはナイフロイド歯形ポンプロータを使用したこと
を特徴とする特許請求の範囲第（１）項記載の可変容量
内接型歯車ポンプ。(2) The variable displacement internal gear pump according to claim (1), characterized in that the pump rotor is a trochoid or knifeoid tooth type pump rotor with a difference in the number of teeth of one tooth.
JP17772783A 1983-09-24 1983-09-24 Variable volume internal gear pump Granted JPS6067793A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17772783A JPS6067793A (en) 1983-09-24 1983-09-24 Variable volume internal gear pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17772783A JPS6067793A (en) 1983-09-24 1983-09-24 Variable volume internal gear pump

Publications (2)

Publication Number Publication Date
JPS6067793A true JPS6067793A (en) 1985-04-18
JPH051398B2 JPH051398B2 (en) 1993-01-08

Family

ID=16036054

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17772783A Granted JPS6067793A (en) 1983-09-24 1983-09-24 Variable volume internal gear pump

Country Status (1)

Country Link
JP (1) JPS6067793A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1087138A3 (en) * 1999-09-25 2002-07-10 Bayerische Motoren Werke Aktiengesellschaft Pump unit with two internal gear pumps
JP2014037793A (en) * 2012-08-14 2014-02-27 Mahle Filter Systems Japan Corp Electric dual pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1087138A3 (en) * 1999-09-25 2002-07-10 Bayerische Motoren Werke Aktiengesellschaft Pump unit with two internal gear pumps
JP2014037793A (en) * 2012-08-14 2014-02-27 Mahle Filter Systems Japan Corp Electric dual pump

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