JPS62223487A - Gear pump device - Google Patents
Gear pump deviceInfo
- Publication number
- JPS62223487A JPS62223487A JP6669186A JP6669186A JPS62223487A JP S62223487 A JPS62223487 A JP S62223487A JP 6669186 A JP6669186 A JP 6669186A JP 6669186 A JP6669186 A JP 6669186A JP S62223487 A JPS62223487 A JP S62223487A
- Authority
- JP
- Japan
- Prior art keywords
- pump body
- gear
- pump
- gears
- thermal expansion
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000003921 oil Substances 0.000 description 7
- 230000007423 decrease Effects 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000010705 motor oil Substances 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
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
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
-
- 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
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2251/00—Material properties
- F05C2251/04—Thermal properties
- F05C2251/042—Expansivity
- F05C2251/046—Expansivity dissimilar
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
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、エンジンのオイルポンプ等に用いる歯ｉ１ｊ
ポンプ装置に関するしのである。Detailed Description of the Invention (Industrial Application Field) The present invention provides a tooth i1j used for an engine oil pump, etc.
This is about pump equipment.
（従来技術）
従来から、りいに噛合する駆動側および従動側の一対の
（ＪＡ車とこれらを収容するポンプボディとを備えた葭
１中ポンプ装品は、液体の圧送用として種々の用途に使
用され、例えば自動市においてはＬンジンのオイルポン
プに使用されている。(Prior art) Conventionally, the Yoshi 1 medium pump equipment, which is equipped with a pair of drive side and driven side (JA wheels) that mesh with the wheels and a pump body that accommodates them, has been used for various purposes for pumping liquids. For example, it is used in oil pumps for L-engines at automobile manufacturers.
−・般にこの種の歯車ボン１に置は、例えば実開昭５８
〜８１３８３５）号公報に示されるように、各南中の歯
先と所定範囲のポンプボディ内周面とが多少のクリアラ
ンスを５つて近接し、かつ各歯車の情／Ｊ向両側端面と
これに対向するポンプボディ内側１ｍとが多少のクリア
ランスをもって近接する状態で、各歯Φが軸を介してポ
ンプボディ内に保持された構造となっている１、そして
、ト記ボンＩボディは加−［竹および軒ω化のためアル
ミニウムで形成され、各歯車は耐摩耗性が要求されるの
てＵ鉄等の鉄系の月料で形成されることが従来では一般
１ヒしており、この場合、上記ポンプボディは各南中よ
りも熱膨張率が人きくなる。--Generally, this kind of gearbond 1 is installed, for example, in U.S. Pat.
-813835), the tip of each center tooth and the inner circumferential surface of the pump body within a predetermined range are close to each other with some clearance, and the tips of each gear are close to each other with some clearance, and both end surfaces of each gear in the information/J direction are connected to this. The structure is such that each tooth Φ is held in the pump body via a shaft in a state in which the opposing pump body inner side 1 m is close to each other with some clearance. Conventionally, the gears are made of bamboo and aluminum due to the eaves, and each gear is required to have wear resistance, so it is generally made of iron-based materials such as U iron. , the above pump body has a higher coefficient of thermal expansion than each other.
ところ゛（−１ａｉｎポンプ装置を１ンジンのオイルポ
ンプ等に用いる場合に、温間時には叶出最を多くして潤
滑、冷ｌＪ１作用等を高めるべくポンプ効率をｔ′ｈめ
たいという要求があり、一方、あまり田川；δを多く必
要としない冷間時には、ポンプ駆動戚抗を小さくして駆
動力を軽減したいという要求がある３、シかるに、ボン
１ボデイが各歯１Ｆ？よりら熱Ｉｖ、張率の大きい材料
で形成されている従来の装置では、温間時に、各歯車に
対して相対的にポンプボディが大きく熱膨張することに
伴い、各歯車とポンプボディとの間のクリアランスが太
きく ４にるためポンプ効率が低下し、また冷間時には
、ポンプボディが大ぎく収縮することに伴って上記クリ
アランスが小さくなるとともに両歯車の噛み合いがきつ
くなるため、駆動抵抗が大きくなる１、従って、歯車ポ
ンプ装置自体では上記の廿求を満足でさり゛、温間時の
Ｉｌｌ出量の増大および冷間時の駆動力の軽減を図るに
は、温度に応じて歯車の回転数を制御するような手段を
別途設ける必要がある。However, when using a -1ain pump device in a one-engine oil pump, etc., there is a demand to increase the pump efficiency during warm conditions to increase lubrication and cold lJ1 effects, etc. On the other hand, during cold operation when a large amount of δ is not required, there is a demand for reducing the driving force by reducing the pump drive resistance. IV. In conventional devices made of materials with high tensile modulus, the clearance between each gear and the pump body decreases due to large thermal expansion of the pump body relative to each gear during warm conditions. 4, the pump efficiency decreases, and when the pump body is cold, the pump body contracts significantly, the above-mentioned clearance decreases, and the meshing of both gears becomes tighter, increasing driving resistance1. Therefore, the gear pump device itself cannot satisfy the above requirements, but in order to increase the amount of Ill output during warm conditions and reduce the driving force during cold conditions, it is necessary to adjust the rotation speed of the gear according to the temperature. It is necessary to separately provide means for controlling this.
（発明の目的）
本発明は上記のような事情に鑑み、温度に応じて１−車
の回転数を制御するような手段を設ける必要なく、温間
「４にはポンプ効率を高めて吐出ｍを増大さＶ、冷間時
には駆動抵抗を小さくして駆動力を軽減することができ
る歯車ポンプ装置を提供する乙のである。(Object of the Invention) In view of the above-mentioned circumstances, the present invention has been devised to increase the pump efficiency and increase the discharge m during the warm period without the need to provide a means to control the number of revolutions of the 1-wheel according to the temperature. The purpose of the present invention is to provide a gear pump device that can increase V and reduce driving force by reducing driving resistance when cold.
（発明の構成）
本発明は、ｑいに噛合・Ｊる駆動側および従動側の歯車
ど、これらの歯車を収容し、かつ各歯車の支持Ｉ咄を保
持υるポンプボディとを備えた１東申ポンプ菰置におい
て、上記ポンプボディを上記各歯車よりム熱膨張・部が
小さい材料で形成したしのである。(Structure of the Invention) The present invention provides a pump body that includes drive-side and driven-side gears that mesh and engage with each other, and a pump body that accommodates these gears and holds support for each gear. In the Toshin pump system, the pump body is made of a material that has a smaller thermal expansion than each of the gears.
この構成ににす、温間時には各歯車とボンブボ ′
ディとの間のクリアランスが小さくなってポンプ効率が
＾められ、冷間時には各歯車とポンプボディとの問、お
よび各歯車相互間の駆動抵抗が小さく ’ｔＫる。In this configuration, each gear and bomber are connected during warm operation.
The clearance between the gears and the pump body becomes smaller, reducing pump efficiency, and when the pump is cold, the drive resistance between each gear and the pump body and between each gear becomes smaller.
（実茄例）
第１図および第２１！４は本発明の一実施例を示し、こ
れらの図に示す歯車ボン７装置η【、１、例えばエンジ
ンのオイルポンプとして用いられ、図外の−Ｌンジンに
１■付（プられて１ンジンにより駆動される。(Actual Example) Figures 1 and 21!4 show an embodiment of the present invention, and the gear pump 7 device η [, 1 shown in these figures is used as an oil pump for an engine, for example, and - Attached to the L engine (pulled and driven by the 1 engine).
これらの図において、１は駆動側歯車、２は従動側歯車
、３はこれらの歯車１．２を収容するポンプボディであ
る。上記ポンプボディ３は、ボディ本体３ａと、その前
面側聞口部を覆うカバーブレー１−３ ｂとＣ構成され
、カバープレート３ｂはボルト４等でボディ本体３ａに
締結されている。In these figures, 1 is a driving gear, 2 is a driven gear, and 3 is a pump body that accommodates these gears 1.2. The pump body 3 is composed of a body main body 3a and a cover plate 1-3b that covers the front opening of the body, and the cover plate 3b is fastened to the body main body 3a with bolts 4 or the like.
上記ボディ本体３ａには、その内部空間に連通ずる吸入
口５および吐出口６が設けられるとともに、エンジンに
対する取付部３Ｃが一体に連設され、この取（１部３Ｃ
の内部を、エンジン出力軸に連動する駆動シャツｌ−７
が１通している。The body main body 3a is provided with an intake port 5 and a discharge port 6 that communicate with the internal space thereof, and is also integrally provided with a mounting portion 3C for the engine.
The inside of the drive shirt l-7 is linked to the engine output shaft.
has sent one message.
また、駆動側歯車１および従動側歯車２は、互いに噛合
する状態で、それぞれ、ポンプボディ３に回転自在に保
持された軸８．９に取付けられている。１周方向所定１
む囲において各歯１！１．２の歯先はポンプボディ３の
内周面に近接し、軸方向両側にＪ３４する歯車１，２の
端面はこれに対向するポンプボディ３内側面に近接して
いる。そして、駆動側歯車１のｌＩ４１８が駆動シャフ
ト７に連結され、駆動シトフト７からの駆動力で駆動側
歯車１およびこれに従動りる従動側歯ＩＪｉ２が第１図
に矢印で示寸方向に回転することにより、吸入口５から
吸入したオイルを吐出口６に送るようになっている。Further, the drive side gear 1 and the driven side gear 2 are each attached to a shaft 8.9 rotatably held by the pump body 3 in a state of meshing with each other. One circumference direction specified 1
The tips of the teeth 1, 1, and 2 are close to the inner circumferential surface of the pump body 3, and the end surfaces of the gears 1 and 2 that are J34 on both sides in the axial direction are close to the opposing inner surface of the pump body 3. ing. The lI418 of the drive gear 1 is connected to the drive shaft 7, and the drive force from the drive shaft 7 rotates the drive gear 1 and the driven gear IJi2 in the direction indicated by the arrow in FIG. By doing so, the oil sucked from the suction port 5 is sent to the discharge port 6.
Ｌ記ポンプボディ３は各歯車１．２よりも熱膨缶率の小
さい祠１゛；１で形成されている。、例えば、各歯車１
．２が鋳鉄害の鉄系材料で形成されている場合、これよ
り熱膨張率が小さいセラミック等でポンプボディ３を形
成しておけばよい。The pump body 3 indicated by L is formed of a mill 1.1 having a smaller coefficient of thermal expansion than each gear 1.2. , for example, each gear 1
．． If the pump body 2 is made of an iron-based material that is harmful to cast iron, the pump body 3 may be made of ceramic or the like having a smaller coefficient of thermal expansion than the iron-based material.
この歯車ポンプＭ ｖｔにおいては、ポンプボディ３に
対する各歯車１，２の相対的な大きざが冷間口、１には
第１図に２点鎖線で示寸ように、また温間時には第１図
に実線で示すようになる。つまり、温間時には、各歯車
１．２の熱膨張がポンプボディ３の熱膨張より６大きい
ため、歯車１．２とポンプボディ３との間のクリアラン
スが冷間時まりム小さくなり、これにより、クリアラン
ス部分でのＡイル洩れが少なくなってポンプ効率が高め
られる。従って、例えばオイルポンプにあっては温間時
のオイル供給能力が高められ、オイルによる潤８゛１作
川や冷２４１作用を高めることができる。一方、湿度が
低下すると歯！１１．２の収縮に伴って上記クリ）ノラ
ンスが大きりｔ【るが、冷間時には、それほどオイル供
給能力を高める必要がなく、また、このにうなポンプボ
ディ３に対する各歯屯１．２の相対的な収縮により、駆
動抵抗が小さくなる。In this gear pump Mvt, the relative sizes of the gears 1 and 2 with respect to the pump body 3 are as shown in the cold opening, 1 as shown by the two-dot chain line in FIG. 1, and as shown in FIG. as shown by the solid line. In other words, when the temperature is warm, the thermal expansion of each gear 1.2 is 6 larger than that of the pump body 3, so the clearance between the gear 1.2 and the pump body 3 becomes smaller when the temperature is cold. , A-il leakage at the clearance portion is reduced and pump efficiency is increased. Therefore, in the case of an oil pump, for example, the oil supply capacity during warm conditions can be increased, and the lubrication and cooling effects of the oil can be enhanced. On the other hand, when the humidity decreases, teeth! 11.2. However, when it is cold, there is no need to increase the oil supply capacity so much, and in this case, each tooth depth of 1.2 The relative contraction reduces the drive resistance.
＜Ｚ ａ３．１記実施例ではエンジンのオイルポンプに
適用した場合を説明したが、本発明の歯車ポンプ装置は
液体の圧送用として種々の用途に適用し得るものである
。<Z a3.1 In the embodiment described above, a case where the gear pump device is applied to an engine oil pump has been described, but the gear pump device of the present invention can be applied to various uses for pumping liquid.
（発明の効宋）
以上のように本発明の歯車ポンプ装置は、ポンプボディ
を各歯車よりも熱膨張率の小さい材料で形成しているた
め、ポンプボディに対する各歯［Ｉの相対的な膨張、収
縮を利用して、温間時にポンプ効率を高め、冷間時には
駆動抵抗を小さくすることができる。従って、特別な制
ｍ手段を用いる必要なく、歯車ポンプ装置自体により、
冷間時の駆動力低減および温間時の吐出能力の増大の要
求を満足することかできるものである。(Effects of the Invention) As described above, in the gear pump device of the present invention, the pump body is formed of a material having a smaller coefficient of thermal expansion than each gear. By using contraction, it is possible to increase pump efficiency during warm conditions and reduce drive resistance during cold conditions. Therefore, there is no need to use special control means, and the gear pump device itself can
It is possible to satisfy the requirements for reducing the driving force during cold conditions and increasing the discharge capacity during warm conditions.
第１図は本発明のｖＡ東ポンプ装買の一実施例をカバー
プレートを除去した状態で承す部分断面図、第２図は第
１図の■−■線に沿った断面図である。
１・・・駆動側歯車、２・・・従動側歯車、３・・・ボ
ンブボゲイ、８．９・・・売持軸。
１：Ｉ請出願人 マ ツ ダ 株式会７１代
理 人 弁ｉｌｌ ｌ−小谷悦司１１１１
弁坤± ＩＦＯ１同 弁
理士 板谷康夫第 １ 図
第２図
５ ｄ ３ｂFIG. 1 is a partial cross-sectional view of an embodiment of the vA East pump equipment of the present invention with the cover plate removed, and FIG. 2 is a cross-sectional view taken along the line ■-■ in FIG. 1. 1... Drive side gear, 2... Driven side gear, 3... Bonbubogei, 8.9... Selling and holding shaft. 1: I petitioner Mazda Co., Ltd. 71st generation
Rito dialect ill l-Etsushi Kotani 1111
Benkon ± IFO1 Patent Attorney Yasuo Itaya Figure 1 Figure 2 Figure 5 d 3b
Claims (1)
らの歯車を収容し、かつ各歯車の支持軸を保持するポン
プボディとを備えた歯車ポンプ装置において、上記ポン
プボディを上記各歯車よりも熱膨張率が小さい材料で形
成したことを特徴とする歯車ポンプ装置。1. In a gear pump device that includes drive-side and driven-side gears that mesh with each other, and a pump body that accommodates these gears and holds a support shaft for each gear, the pump body has a thermal expansion coefficient greater than that of each of the gears. A gear pump device characterized in that it is formed of a material with a small ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6669186A JPS62223487A (en) | 1986-03-24 | 1986-03-24 | Gear pump device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6669186A JPS62223487A (en) | 1986-03-24 | 1986-03-24 | Gear pump device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62223487A true JPS62223487A (en) | 1987-10-01 |
Family
ID=13323212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6669186A Pending JPS62223487A (en) | 1986-03-24 | 1986-03-24 | Gear pump device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62223487A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10356807A1 (en) * | 2003-12-05 | 2004-12-23 | Audi Ag | Positive displacement gear pump for use in e.g. internal combustion (IC) engine, has pump case formed of material e.g. steel, whose coefficient of thermal expansion is lower than that of material e.g. zinc, for pair of gears |
| JP2006183592A (en) * | 2004-12-28 | 2006-07-13 | Kayaba Ind Co Ltd | External gear pump and hydraulic drive unit provided with the external gear pump |
| DE102005033679B4 (en) * | 2004-07-21 | 2008-01-31 | Hitachi, Ltd. | oil pump |
-
1986
- 1986-03-24 JP JP6669186A patent/JPS62223487A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10356807A1 (en) * | 2003-12-05 | 2004-12-23 | Audi Ag | Positive displacement gear pump for use in e.g. internal combustion (IC) engine, has pump case formed of material e.g. steel, whose coefficient of thermal expansion is lower than that of material e.g. zinc, for pair of gears |
| DE102005033679B4 (en) * | 2004-07-21 | 2008-01-31 | Hitachi, Ltd. | oil pump |
| US7374411B2 (en) | 2004-07-21 | 2008-05-20 | Hitachi, Ltd. | Oil pump adapted to prevent leakage without using sealing member |
| JP2006183592A (en) * | 2004-12-28 | 2006-07-13 | Kayaba Ind Co Ltd | External gear pump and hydraulic drive unit provided with the external gear pump |
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