JPS61104178A - Rotary oil pump - Google Patents
Rotary oil pumpInfo
- Publication number
- JPS61104178A JPS61104178A JP22567284A JP22567284A JPS61104178A JP S61104178 A JPS61104178 A JP S61104178A JP 22567284 A JP22567284 A JP 22567284A JP 22567284 A JP22567284 A JP 22567284A JP S61104178 A JPS61104178 A JP S61104178A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- gear
- rotors
- pump device
- rotor
- 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
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
- F04C2/084—Toothed wheels
-
- 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
- F04C15/0088—Lubrication
-
- 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
- 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
- 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
- F04C2240/00—Components
- F04C2240/50—Bearings
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〕
本発明は回転式オイルポンプ装置に関し、更に詳しくは
、回転式オイルポンプ装置における軸方向荷重作用面の
摩耗防止構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rotary oil pump device, and more particularly to a wear prevention structure for an axial load acting surface in a rotary oil pump device.
一般に、回転式オイルポンプ装置としては、トロコイド
型オイルポンプ装置、外接ギア型オイルポンプ装置及び
クレセント型オイルポンプ装置等が広（知られている。Generally, rotary oil pump devices include a trochoid type oil pump device, an external gear type oil pump device, a crescent type oil pump device, and the like.
これら回転式オイルポンプ装置において、内接或いは外
接する一対のギアロータの端面ば油膜形成用の隙間を介
してハウジングの支持面に対向しているが、これらロー
タの端面やハウジングの支持面等は凹凸のない滑らかな
平面に仕上げられているため、ロータの端面とハウジン
グの支持面との間で油膜切°れが起こって金属接触によ
る摩耗を起こし、騒音の発生やポンプ効率の低下等を招
く可能性がある。また、通常、ハウジングの外部におい
て、回転シャフトには回転動力伝達用のギアが取り付け
られ、このギアの一端面はハウジングに取り付けられた
スラストワッシャの支持面に対し油膜形成用の隙間を介
して対向せしめられている。しかしながら、これらギア
の端面及びスラストワッシャの支持面は凹凸のない滑ら
かな平面に仕上げられているため、ギアとスラストワッ
シャとの間で油膜切れが生じて金属接触による摩耗を起
こし、回転シャフトの軸方向の遊びが大きくなってポン
プ効率が低下したり、騒音が発生したりする可能性があ
る。In these rotary oil pump devices, the end surfaces of a pair of internally or externally connected gear rotors face the support surface of the housing through a gap for forming an oil film, but the end surfaces of the rotors and the support surface of the housing are uneven. Since the rotor is finished with a smooth flat surface, an oil film may break between the end face of the rotor and the supporting surface of the housing, causing metal-to-metal contact and wear, which can lead to noise generation and reduced pump efficiency. There is sex. Additionally, a gear for transmitting rotational power is usually attached to the rotating shaft on the outside of the housing, and one end surface of this gear faces the support surface of the thrust washer attached to the housing through a gap for forming an oil film. I'm being forced to do it. However, since the end faces of these gears and the support surfaces of the thrust washers are finished as smooth flat surfaces with no irregularities, an oil film may run out between the gears and the thrust washers, causing wear due to metal-to-metal contact. This can increase directional play, reducing pump efficiency and generating noise.
ｃ問題点を解決するための手段〕
Ｌ記問題点を解決するための手段として、本宛叫は、回
転式オイルポンプ装置において回転部材の端面、又は、
該回転部材の端面に対し油膜形成用の隙間を介して対向
する固定部材の支持面のうちのいずれか一方に、複数個
のオイル誘導溝を回転部材の中心方向にオイルを引き込
むように設けたことを特徴とする回転式オイルポンプ装
置を提供する。Means for Solving Problem C] As a means for solving problem L, this address is directed to the end face of a rotating member in a rotary oil pump device, or
A plurality of oil guide grooves are provided on either one of the supporting surfaces of the fixed member facing the end face of the rotating member through a gap for forming an oil film so as to draw oil toward the center of the rotating member. To provide a rotary oil pump device characterized by the following.
本発明による上記手段によれば、回転部材の中心方向に
オイルを引き込むように設けた複数個のオイル誘導溝に
より、ギアロータ、ギア等のような回転部材の端面と、
ハウジング、スラストワッシャ等のような固定部材の支
持面との間にオイルが引き込まれるため、回転部材の端
面と固定部材の支持面との間に油膜が安定的に形成され
て回転部材と固定部材との金属接触による摩耗が防止さ
れる。According to the above means according to the present invention, a plurality of oil guiding grooves provided to draw oil toward the center of the rotating member are used to connect the end face of a rotating member such as a gear rotor, a gear, etc.
Since oil is drawn between the supporting surfaces of fixed members such as housings and thrust washers, an oil film is stably formed between the end surfaces of rotating members and the supporting surfaces of fixed members, and the rotating member and fixed member are This prevents wear caused by metal contact with the metal.
以下、図面を参照して本発明の詳細な説明する。 Hereinafter, the present invention will be described in detail with reference to the drawings.
第１図ないし第３図は本発明をトロコイド型オイルポン
プ装置に適用した場合の一実施例を示すものである。こ
れらの図を参照すると、ポンプ装置は上下一対のハウジ
ング１１．１２を備えている。上ハウジング１１にはシ
リンダ状のボア１３が設けられている。ボア１３内には
互いに内接するトロコイド歯形を有する内側ギアロータ
１４及びリング状外側ギアロータ１５が中心ｏ１．ｏ２
の周りに回転可能に設けられている。内側ギアロータ１
４はピン１６によって回転シャフト１７の下端に取り付
けられている。1 to 3 show an embodiment in which the present invention is applied to a trochoidal oil pump device. Referring to these figures, the pump device includes a pair of upper and lower housings 11,12. The upper housing 11 is provided with a cylindrical bore 13 . Inside the bore 13, an inner gear rotor 14 and a ring-shaped outer gear rotor 15 having trochoidal teeth inscribed in each other are located at the center o1. o2
is rotatably mounted around the Inner gear rotor 1
4 is attached to the lower end of the rotating shaft 17 by a pin 16.
ギアロータ１４，１５の両端面１４ａ、１５ａは上下ハ
ウジング１１．１２の支持面１１ａ。Both end surfaces 14a, 15a of the gear rotors 14, 15 are support surfaces 11a of the upper and lower housings 11.12.
１２ａに対しそれぞれ油膜形成用の隙間を介して対向し
ている。12a, each facing the oil film forming gap.
第１図及び第２図に詳細に示すように、ここでは、ギア
ロータ１４，１５の両端面１４ａ、１５ａにそれぞれ複
数個のオイル誘導溝１８．１９が設 ２′けられ
ている。ギアロータ１４のオイル誘導溝１８はギアロー
タ１４の回転中心０１に対しオイルを引き込むように設
けられている。ギアロータ１５のオイル誘導溝１９はギ
アロータ１５の回転中心０２に対してもオイルを引き込
むように設けられている。As shown in detail in FIGS. 1 and 2, a plurality of oil guide grooves 18 and 19 are provided on both end surfaces 14a and 15a of the gear rotors 14 and 15, respectively. The oil guide groove 18 of the gear rotor 14 is provided so as to draw oil into the rotation center 01 of the gear rotor 14. The oil guide groove 19 of the gear rotor 15 is provided so as to draw oil also into the rotation center 02 of the gear rotor 15.
この実施例において、ギアロータ１４，１５の回転方向
はそれぞれ第１図において矢印ｍ、ｎで示されている。In this embodiment, the directions of rotation of the gear rotors 14, 15 are indicated by arrows m, n, respectively, in FIG.
ギアロータ１４，１５が回転するとオイル人口２０から
ハウジング１１のボア１３内にオイルが吸い込まれ、ギ
アロータ１４，１５間で加圧されたオイルはオイル吐出
口２１から外部に吐出される。When the gear rotors 14 and 15 rotate, oil is sucked into the bore 13 of the housing 11 from the oil port 20, and the oil pressurized between the gear rotors 14 and 15 is discharged to the outside from the oil discharge port 21.
第１図を参照すると、ここでは、オイル誘導溝１８．１
９はギアロータ１４，１５の回転方向ｍ。Referring to FIG. 1, here the oil guide groove 18.1
9 is the rotation direction m of the gear rotors 14 and 15.
ｎに沿って外方に放射状に延びているので、ギアロータ
゛１４，１５が回転するとボア１３内のオイルは質量的
なポンプ作用によって各オイル誘導溝１８．１９内に引
き込まれる。このようにして各オイル誘導溝１８．１９
内に引き込まれたオイルはギアロータ１４，１５の両端
面１４ａ、１５ａとハウジング１１．１２の支持面１１
ａ、１２ａとの間に進入して油膜を安定的に形成する。When the gear rotors 14, 15 rotate, the oil in the bore 13 is drawn into the respective oil guide groove 18, 19 by a mass pumping action. In this way, each oil guide groove 18.19
The oil drawn into the gear rotors 14, 15 on both end surfaces 14a, 15a and the support surface 11 of the housing 11.12.
a and 12a to stably form an oil film.
上記実施例におけるオイル誘導ｉ！ｍ１８，１９は曲線
的に延びているが、第４図に示すように、各オイル誘導
溝１８．１９は直線的に延びていてもよい。Oil induction i! in the above example! Although m18, 19 extend in a curved manner, each oil guide groove 18, 19 may extend linearly, as shown in FIG.
また、第１図ないし第３図に示す実施例においては、ギ
アロータ１４，１５の両端面にオイル誘導ｔＪｔｓ、ｔ
９が設けられているが、ハウジング１１．１２の支持面
１１ａ、１２ａにオイル誘導溝を設けてもよい。第５図
は上ハウジング１１の支持面１１ａに複数個のオイル誘
導溝２２を内側ギアロータの回転中心０１の方向にオイ
ルを引き込むように設けた例を示している。この実施例
において、上ハウジングのボア１３内のオイルはオイル
誘導溝２２内に引き込まれるので、ギアロータとハウジ
ングの支持面との間に油膜が安定的に形成されることと
なる。ここでは、オイル誘導溝２２はギアロータの回転
方向ｍ、ｎに沿って外方に延びた渦巻き形状となってい
る。In the embodiment shown in FIGS. 1 to 3, oil induction tJts, t
9 are provided, however, the support surfaces 11a, 12a of the housing 11.12 may also be provided with oil guide grooves. FIG. 5 shows an example in which a plurality of oil guide grooves 22 are provided on the support surface 11a of the upper housing 11 so as to draw oil toward the rotation center 01 of the inner gear rotor. In this embodiment, the oil in the bore 13 of the upper housing is drawn into the oil guide groove 22, so that an oil film is stably formed between the gear rotor and the support surface of the housing. Here, the oil guide groove 22 has a spiral shape extending outward along the rotational directions m and n of the gear rotor.
第６図ないし第９図は本発明を外接ギア型オイルポンプ
装置に適用した４例を示すものである。6 to 9 show four examples in which the present invention is applied to an external gear type oil pump device.
これらの図を参照すると、ポンプ装置は上下一対のハウ
ジング３１．３２を備えている。上ハウジング３１のボ
ア３３内には互いに外接する一対のギアロータ３４，３
５が中心ｏ、、ｏ２の周りに回転可能に設けられている
。ギアロータ３４゜３５の両端面、３４ａ、３５ａはそ
れぞれ上ハウジング３１及び下ハウジング３２の支持面
３１ａ。Referring to these figures, the pump device includes a pair of upper and lower housings 31 and 32. Inside the bore 33 of the upper housing 31 are a pair of gear rotors 34, 3 that circumscribe each other.
5 are rotatably provided around centers o, , o2. Both end surfaces 34a and 35a of the gear rotors 34 and 35 are support surfaces 31a of the upper housing 31 and lower housing 32, respectively.
３２ａに対し油膜形成用の隙間を介して対向している。32a through a gap for forming an oil film.
一方のギアロータ３４は主回転シャフト３６の下端に取
り付けられており、他方のギアロータ３５は副回転シャ
フト３７に取り付けられている。One gear rotor 34 is attached to the lower end of the main rotating shaft 36, and the other gear rotor 35 is attached to the auxiliary rotating shaft 37.
回転シャツ１−３６．３７は上ハウジング３１に回転可
能に保持されている。The rotating shirt 1-36, 37 is rotatably held in the upper housing 31.
第６図及び第７図に示すように、主回転シャフト３６の
上端には回転動力を伝達するためのギア３８がキー３９
を介して回転不能に取り付けられており、主回転シャフ
ト３６には上方へのギア３８の抜けを防止するための止
め輪４０が装着されている。上ハウジング３１の上端に
形成された凹所にはスラストワッシャ４１が嵌着されて
いる。As shown in FIGS. 6 and 7, a gear 38 for transmitting rotational power is attached to a key 39 at the upper end of the main rotating shaft 36.
A retaining ring 40 is attached to the main rotating shaft 36 to prevent the gear 38 from coming off upward. A thrust washer 41 is fitted into a recess formed at the upper end of the upper housing 31.
ギア３８の下端面３８ａはスラストワッシャ４１の上側
支持面４１ａに対し油膜形成用の隙間を介して対向して
いる。The lower end surface 38a of the gear 38 faces the upper support surface 41a of the thrust washer 41 with an oil film forming gap therebetween.
第７図及び第８図に示すように回転シャフト３６．３７
にはその下端に開口するオイル通路３６ａ、３７ａが設
けられている。主回転シャット３６におけるオイル通路
３６ａの上部にはギア３８とスラストワッシャ４１との
間の隙間に開口するボート３６ｂが設けられている。Rotating shaft 36.37 as shown in Figures 7 and 8
are provided with oil passages 36a and 37a that open at their lower ends. A boat 36b that opens into the gap between the gear 38 and the thrust washer 41 is provided above the oil passage 36a in the main rotation shut 36.
第７図及び第８図に詳細に示すように、ここでは、ギア
ロータ３４，３５の両端面３４ａ、３５ａにそれぞれ複
数個のオイル誘導溝４３．４４が設けられている。ギア
ロータ３４のオイル誘導溝４３はギアロータ３４の回転
中心０１の方向にオ。As shown in detail in FIGS. 7 and 8, a plurality of oil guide grooves 43 and 44 are provided on both end surfaces 34a and 35a of the gear rotors 34 and 35, respectively. The oil guide groove 43 of the gear rotor 34 is oriented toward the rotation center 01 of the gear rotor 34.
イルを引き込むように設けられており、ギアロータ３５
のオイル誘導溝４４はギアロータ３５の回 ′
転中心０２の方向オイルを引き込むように設けられてい
る。gear rotor 35.
The oil guide groove 44 of the gear rotor 35 is
It is provided so as to draw oil in the direction of the center of rotation 02.
この実）％例において、ギアロータ３４，３５の回転方
向はそれぞれ第８図において矢印ｍ、ｎで示されている
。ギアロータ３４，３５が回転するとオイル人口４５か
ら上ハウジング３１のボア３３内にオイルが吸い込まれ
、ギアロータ３４゜３５間で加圧されたオイルはオイル
吐出口４６から外部に吐出される。In this example, the rotational directions of the gear rotors 34 and 35 are indicated by arrows m and n in FIG. 8, respectively. When the gear rotors 34 and 35 rotate, oil is sucked into the bore 33 of the upper housing 31 from the oil port 45, and the oil pressurized between the gear rotors 34 and 35 is discharged to the outside from the oil discharge port 46.
第８図を参照すると、ここでは、オイル誘導溝４３．４
４はギアロータ３４．３５の回転方向ｍ。Referring to FIG. 8, oil guide groove 43.4 is shown here.
4 is the rotation direction m of the gear rotor 34.35.
ｎに沿って外方に渦巻き状に延びているので、ギアロー
タ３４，３５が回転するとボア３３内のオイルは質量的
なポンプ作用によって各オイル誘導ｍ４３．４４の外側
開口端４３ａ、４４ａから各オイル誘導溝４３．４４内
に引き込まれる。このようにして各オイル誘導溝４３．
４４内に引き込まれたオイルはギアロータ３４，３５の
両端面３４ａ、３５ａとハウジング３１．３２の支持面
３１ａ、３２ａとの間に進入して油膜を安定的に形成す
る。n, so that when the gear rotors 34, 35 rotate, the oil in the bore 33 is pumped through the outer open end 43a, 44a of each oil guide m43, 44 by a mass pumping action. It is drawn into the guide groove 43,44. In this way, each oil guide groove 43.
The oil drawn into the gear rotor 44 enters between the end surfaces 34a, 35a of the gear rotors 34, 35 and the support surfaces 31a, 32a of the housing 31, 32 to stably form an oil film.
一方、第７図及び第９図に示すように、ここでは、スラ
ストワッシャ４１の上側支持面４１ａに複数個のオイル
誘導Ｉ！Ｊ４７が設けられている。スラストワッシャ４
１のオイル誘導溝４７はギアロータ３４の回転中心０１
と一致するギア３８の回転中心に対しほぼ渦巻き状に連
設されている。ここでは、オイル誘導溝４７はギア３８
の回転方向ｍの逆方向に沿って渦巻き状に外方に延びて
いる。On the other hand, as shown in FIGS. 7 and 9, here, a plurality of oil guides I! are provided on the upper support surface 41a of the thrust washer 41. J47 is provided. Thrust washer 4
The oil guide groove 47 of No. 1 is located at the rotation center 01 of the gear rotor 34.
The rotation center of the gear 38 coincides with the center of rotation of the gear 38, which is connected in a substantially spiral manner. Here, the oil guide groove 47 is connected to the gear 38.
It extends outward in a spiral shape along the direction opposite to the direction of rotation m.
主回転シャフト３６と共にギア３８が回転すると主回転
シャフト３６のオイル通路３６ａ内のオイルがボー１−
３６ｂを通って粘性によりオイル誘導溝４７内に引き込
まれる。したがって、ギア３８の下面３８ａとスラスト
ワッシャ４１の支持面４１ａとの間には油膜が安定的に
形成されることとなる。When the gear 38 rotates together with the main rotating shaft 36, the oil in the oil passage 36a of the main rotating shaft 36 flows into the ball 1-
36b and is drawn into the oil guide groove 47 by viscosity. Therefore, an oil film is stably formed between the lower surface 38a of the gear 38 and the support surface 41a of the thrust washer 41.
また、第６図ないし第９図に示す実施例においては、ギ
アロータ３４，３５の両端面３４ａ。In the embodiment shown in FIGS. 6 to 9, both end surfaces 34a of the gear rotors 34 and 35.
３５ａ並びにスラストワッシャ４１の支持面４１ａにオ
イル誘導ｔｊ４３，４４．４７が設けられているが、ハ
ウジング３１．３２の支持面３１ａ。35a as well as the support surface 41a of the thrust washer 41 are provided with oil guides tj 43, 44.47, the support surface 31a of the housing 31.32.
３２ａ並びにギア３８の下端面３８ａにそれぞれ同様の
オイル誘導溝を連設するようにしてもよい。32a and the lower end surface 38a of the gear 38 may be provided with similar oil guide grooves, respectively.
また、本発明は上記実施例の他に、例えばクレセントギ
ア型オイルポンプ装置にも同様に適用することができる
。Furthermore, in addition to the above embodiments, the present invention can be similarly applied to, for example, a crescent gear type oil pump device.
以上の説明から明らかなように、本発明によれば、複数
個のオイル誘導溝により、ギアロータ、ギア等のような
回転部材の端面と、ハウジング、スラストワッシャ等の
ような固定部材の支持面との間にオイルが引き込まれる
ため、回転部材の端面と固定部材の支持面との間に油膜
が安定的に形成されて回転部材と固定部材との金属接触
が防止されることとなる。したがって、金属接触による
摩耗や、摩耗に伴う騒音やポンプ効率の低下等を防止で
きるようになる。As is clear from the above description, according to the present invention, a plurality of oil guide grooves are used to connect the end face of a rotating member such as a gear rotor, a gear, etc., and the support surface of a stationary member such as a housing, a thrust washer, etc. Since oil is drawn in between, an oil film is stably formed between the end surface of the rotating member and the supporting surface of the fixed member, and metal contact between the rotating member and the fixed member is prevented. Therefore, it becomes possible to prevent wear caused by metal contact, noise caused by wear, reduction in pump efficiency, etc.
第１図は本発明をトロコイドギア型オイルポンプ装置に
適用した場合の一実施例を示すポンプ装置のギアロータ
の底面図、
第２図は第１図に示す実施例におけるポンプ装置の全体
分解斜視図、
第３図は第２図に示すポンプ装置の要部縦断面図、
第４図は本発明をトロコイドギア型オイルポンプ装置に
適用した場合の他の実施例を示すポンプ装置のギアロー
タの底面図、
第５図は本発明をトロコイドギア型オイルポンプ装置に
通用した場合の他の実施例を示すポンプ装置のハウジン
グの底面図、
第６図は本発明を外接ギア型オイルポンプ装置に適用し
た場合の一実施例を示すポンプ装置の全体分解斜視図、
第７図は第６図に示すポンプ装置の要部縦断面図、
第８図は第６図に示すポンプ装置の上ハウジング及びギ
アロータの底面図、
第９図は第６図に示すポンプ装置のスラストワッシャの
平面図である。 ′１
１−上ハウジング、 ｌｌａ・−支持面、１２ 下ハ
ウジング、 １２ ａ−支持面、１４〜内側ギアロー
タ、１４ａ一端面、１５−外側ギアロータ、１５ａ−・
一端面、１８．１！Ｊ−−−オイル誘導溝、
３１ 上ハウジング、 ３１ａ−支持面、３２−下ハ
ウジング、 ３２ａ・−支持面、３４．３５−−ギアロ
ータ、
３４ａ、３５ａ−・一端面、３８−・ギア、３８ ａ
−−一下端面、
４１−−スラストワッシャ、
４１ａ−支持面、
４３．４４．４５−オイル誘導溝。
第４図
Ｕ２
第５図
第６図 第７図
Ｘ４０FIG. 1 is a bottom view of a gear rotor of a pump device showing an embodiment in which the present invention is applied to a trochoid gear type oil pump device, and FIG. 2 is an overall exploded perspective view of the pump device in the embodiment shown in FIG. , FIG. 3 is a vertical sectional view of the main part of the pump device shown in FIG. 2, and FIG. 4 is a bottom view of the gear rotor of the pump device showing another embodiment in which the present invention is applied to a trochoid gear type oil pump device. , Fig. 5 is a bottom view of a housing of a pump device showing another embodiment in which the present invention is applied to a trochoid gear type oil pump device, and Fig. 6 is a case in which the present invention is applied to an external gear type oil pump device. FIG. 7 is a vertical cross-sectional view of essential parts of the pump device shown in FIG. 6; FIG. 8 is a bottom view of the upper housing and gear rotor of the pump device shown in FIG. 6. FIG. 9 is a plan view of the thrust washer of the pump device shown in FIG. 6. '1
1 - upper housing, lla - support surface, 12 - lower housing, 12 a - support surface, 14 - inner gear rotor, 14a one end surface, 15 - outer gear rotor, 15a - -
One end surface, 18.1! J--oil guide groove, 31 upper housing, 31a-support surface, 32-lower housing, 32a--support surface, 34.35--gear rotor, 34a, 35a--one end surface, 38--gear, 38 a
--One lower end surface, 41--Thrust washer, 41a-Supporting surface, 43.44.45-Oil guide groove. Figure 4 U2 Figure 5 Figure 6 Figure 7 X40
Claims (1)
、又は、該回転部材の端面に対し油膜形成用の隙間を介
して対向する固定部材の支持面のうちのいずれか一方に
、複数個のオイル誘導溝を回転部材の中心方向にオイル
を引き込むように設けたことを特徴とする回転式オイル
ポンプ装置。1. In a rotary oil pump device, a plurality of pieces of oil are attached to either the end face of a rotating member or the supporting face of a fixed member that faces the end face of the rotating member through a gap for forming an oil film. A rotary oil pump device characterized in that a guide groove is provided to draw oil toward the center of a rotating member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22567284A JPS61104178A (en) | 1984-10-29 | 1984-10-29 | Rotary oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22567284A JPS61104178A (en) | 1984-10-29 | 1984-10-29 | Rotary oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61104178A true JPS61104178A (en) | 1986-05-22 |
Family
ID=16832970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22567284A Pending JPS61104178A (en) | 1984-10-29 | 1984-10-29 | Rotary oil pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61104178A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0292083U (en) * | 1988-12-29 | 1990-07-20 | ||
| KR100435686B1 (en) * | 2001-10-25 | 2004-06-12 | 현대자동차주식회사 | Continuously variable transmission type oil pump |
| EP3120027A4 (en) * | 2014-03-21 | 2017-12-06 | Imo Industries Inc. | Gear pump with end plates or bearings having spiral grooves |
-
1984
- 1984-10-29 JP JP22567284A patent/JPS61104178A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0292083U (en) * | 1988-12-29 | 1990-07-20 | ||
| KR100435686B1 (en) * | 2001-10-25 | 2004-06-12 | 현대자동차주식회사 | Continuously variable transmission type oil pump |
| EP3120027A4 (en) * | 2014-03-21 | 2017-12-06 | Imo Industries Inc. | Gear pump with end plates or bearings having spiral grooves |
| US10323636B2 (en) | 2014-03-21 | 2019-06-18 | Circor Pumps North America, Llc | Gear pump with end plates or bearings having spiral grooves |
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