JPS593194A - Vane pump - Google Patents
Vane pumpInfo
- Publication number
- JPS593194A JPS593194A JP11235082A JP11235082A JPS593194A JP S593194 A JPS593194 A JP S593194A JP 11235082 A JP11235082 A JP 11235082A JP 11235082 A JP11235082 A JP 11235082A JP S593194 A JPS593194 A JP S593194A
- Authority
- JP
- Japan
- Prior art keywords
- rotating sleeve
- sleeve
- vane
- rotor
- circumferential surface
- 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
- F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
- F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
- F04C2/348—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the vanes positively engaging, with circumferential play, an outer rotatable member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
- F01C21/104—Stators; Members defining the outer boundaries of the working chamber
- F01C21/106—Stators; Members defining the outer boundaries of the working chamber with a radial surface, e.g. cam rings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
Description
【発明の詳細な説明】 本発明はベーンポンプに関する。[Detailed description of the invention] The present invention relates to a vane pump.
ベーンポンプの一例として、円筒状ハウジング内に回転
スリーブを設け、該回転スリーブ内周面にベーン外端面
を当接させてロータとともに回転スリーブを回転させる
方式のものがあるが、ベーン外端面と回・転スリーブ内
周面との間でスリップを生じ易（、このスリップによる
ベーン外端面の摩耗か問題となっている。As an example of a vane pump, there is a type in which a rotating sleeve is provided in a cylindrical housing, and the outer end surface of the vane is brought into contact with the inner peripheral surface of the rotating sleeve so that the rotating sleeve is rotated together with the rotor. Slip easily occurs between the vane and the inner circumferential surface of the rolling sleeve (this slipping causes wear on the outer end surface of the vane, which is a problem).
これに対して、例えば、特公昭Ｆ ？ −２３，３，！
、２号公報に開示されている如く、回転スリーブに側板
を固定し、ロータと側板とをピンで連結してベーンと回
転スリーブとのスリップを抑えたものは提案されている
。しかし、この提案のものにおいては、構造が複雑であ
り、また、回転スリーブ外周面の摩耗という問題に対す
る解決策は特に提案されていない。On the other hand, for example, Tokko Sho F? -23,3,!
As disclosed in Japanese Patent No. 2, it has been proposed that a side plate is fixed to a rotating sleeve, and the rotor and side plate are connected with a pin to suppress slippage between the vane and the rotating sleeve. However, this proposal has a complicated structure, and no particular solution to the problem of wear on the outer peripheral surface of the rotating sleeve has been proposed.
本発明は、かかる点に鑑み、回転スリーブを鉄系材料と
し、これに窒化処理を施すことにより、該回転スリーブ
の内周面と外周面とに窒化層を形成し、この内周面の表
面粗さを大きくしてベーン生回転スリーブとのスリップ
を抑制するとともに、回転スリーブの外周面の表面粗さ
は内周面よりも小さくし、上記窒化層によってこの外周
面の耐摩耗性の向上を図ったベーンポンプを提供するも
のである。In view of this, the present invention makes the rotating sleeve an iron-based material, and by subjecting it to nitriding treatment, a nitrided layer is formed on the inner circumferential surface and the outer circumferential surface of the rotating sleeve, and the surface of this inner circumferential surface is In addition to increasing the roughness to suppress slippage between the vane and the rotating sleeve, the surface roughness of the outer circumferential surface of the rotating sleeve is smaller than that of the inner circumferential surface, and the nitrided layer improves the wear resistance of this outer circumferential surface. The purpose of this invention is to provide a vane pump that achieves this goal.
以下、本発明の構成を実施例につき図面に基づいて説明
する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below based on embodiments with reference to the drawings.
１はべ一７７エアポンプ、２はこのベーンポンプ１のハ
ウジングで、円筒カバー３の両側にサイ１’カバー４．
４が取り付けられている。５はハウジング２内に回転自
在に設けた円筒状の回転スリーブで、外径は前記円°簡
カバー３の内径よりも若干小さく形成されている。６は
ハウジング２内において、軸心を回転スリーブ５の軸心
に対して偏心させて回転自在に設けたロータで、両側へ
突出した軸７，７が前記サイドカバー４，４に設けた軸
受８，８に支持され、片側の軸７にはサイドカバー４の
外側においてプーリ９が取り付けられている。1 is the vane 77 air pump, 2 is the housing of this vane pump 1, and the cylindrical cover 3 has a size 1' cover 4 on both sides.
4 is installed. Reference numeral 5 denotes a cylindrical rotating sleeve rotatably provided within the housing 2, and its outer diameter is slightly smaller than the inner diameter of the circular cover 3. Reference numeral 6 denotes a rotor rotatably provided in the housing 2 with its axis eccentric to the axis of the rotary sleeve 5, and the shafts 7, 7 protruding to both sides are connected to bearings 8 provided in the side covers 4, 4. , 8, and a pulley 9 is attached to one shaft 7 on the outside of the side cover 4.
上記ロータ６には、その外面より軸心部近傍に至るりつ
の溝１ｏが互いに直角となるように形成されており、谷
溝１ｏにベーン１１が回転スリーブ５−・向けて突出て
きるように遊Ｊｆ’ｊされている。In the rotor 6, grooves 1o extending from the outer surface to the vicinity of the shaft center are formed so as to be at right angles to each other, and the vanes 11 are formed in the valley grooves 1o so as to protrude toward the rotating sleeve 5-. It is being played Jf'j.
つまり、ベーン１１はロータ６の回転による遠心力て溝
１Ｇより突出する方向へ付勢され、その外端面１１ａが
回転スリーブ５の内周面フ２に当接するようになされ、
この当接により回転ス１ノーブ５とロータ６との間の空
間をグっの作動室１３ａ。That is, the vane 11 is urged in the direction of protruding from the groove 1G by the centrifugal force caused by the rotation of the rotor 6, and its outer end surface 11a is brought into contact with the inner circumferential surface 2 of the rotating sleeve 5.
Due to this contact, the space between the rotary knob 5 and the rotor 6 is closed to the working chamber 13a.
１３ｂ、 １３ｃ、１３ｄに区分するようになされてい
る。It is divided into 13b, 13c, and 13d.
な机第１図において、１４はスジ１ノング１５にて回転
スリーブ５の側面に圧接したリング状のカーボンシール
、１６は円筒カバー３と回転スリーブ外周面１７との隙
間と、圧縮作動室１３Ｃとを連通ずる連通路で、作動室
側の圧縮流体を前記隙間に導いて回転スリーブ外周面１
７と円筒カバー６との間に空気層１８を形成し、両者間
の摩擦抵抗を減するようになされている。また、第２図
において、１９は吸入口、２ｏは吐出口である。In FIG. 1, reference numeral 14 indicates a ring-shaped carbon seal pressed against the side surface of the rotating sleeve 5 at a line 1 non-gang 15, and 16 indicates a gap between the cylindrical cover 3 and the outer circumferential surface 17 of the rotating sleeve, and a compression working chamber 13C. The compressed fluid on the working chamber side is guided into the gap through the communication path that communicates with the outer peripheral surface 1 of the rotating sleeve.
An air layer 18 is formed between the cylindrical cover 7 and the cylindrical cover 6 to reduce the frictional resistance between the two. Further, in FIG. 2, 19 is an inlet, and 2o is an outlet.
しかして、上記回転スリーブ５は、鉄系材料で形成され
ており、その内周面１２および外周面１７には窒化処理
による窒化層が形成され、内周面１２の表面粗さは大き
く、外周面１７の表面粗さは内周面１２よりも小さくな
されている。すなわち、実施例においては、鉄系材料と
して片状黒鉛鋳鉄を用いてガス軟窒化処理により窒化層
を形成した。The rotating sleeve 5 is made of iron-based material, and a nitrided layer is formed on the inner circumferential surface 12 and the outer circumferential surface 17 by nitriding treatment, the inner circumferential surface 12 has a large surface roughness, and the outer circumferential surface The surface roughness of the surface 17 is made smaller than that of the inner peripheral surface 12. That is, in the examples, flake graphite cast iron was used as the iron-based material, and a nitrided layer was formed by gas soft nitriding treatment.
回転スリーブ５の内周面１２の表層部構造は第３図に示
されて、いる。The surface layer structure of the inner peripheral surface 12 of the rotating sleeve 5 is shown in FIG.
この第３図において、２１はパーライト、２２は片状の
グラファイト、２３は窒化層であり、グラファイト２２
の周辺部の窒化層２６には突起２３ａが形成されている
。窒化層２６の厚さｔは７０μ程度であり、また、突起
２３ａの高さｈは１０〜．２０μ゛程度である。つまり
、回転スリーブ内周面１２の表面粗さは７０〜．２０Ｓ
である。In FIG. 3, 21 is pearlite, 22 is flaky graphite, 23 is a nitride layer, and graphite 22
A protrusion 23a is formed on the nitride layer 26 at the peripheral portion of the nitride layer 26. The thickness t of the nitride layer 26 is about 70 μm, and the height h of the protrusion 23 a is 10 to . It is about 20μ゛. In other words, the surface roughness of the inner circumferential surface 12 of the rotating sleeve is 70~. 20S
It is.
一方、回転スリーブ外周面１７は、砥石等で研摩して窒
化層の表面粗さが回転スリーブ内周面１２よりも小さく
（たとえば０６〜ｊμ）なされている。On the other hand, the outer circumferential surface 17 of the rotating sleeve is polished with a grindstone or the like so that the surface roughness of the nitrided layer is smaller than that of the inner circumferential surface 12 of the rotating sleeve (for example, 06 to jμ).
上記ベーンポンプ１の作動を説明すると、吸入口１９よ
り膨張行程にある作動室（図例では作動室１３ａ、、１
３ｂ）に吸入された流体はロータ６の回転によってベー
ン１１て圧縮され、吐出口２０より吐出される。このポ
ンプ作動時において、ベーン１１はロータ６の回転によ
る遠心力て溝１Ｄから突出する方向へ付勢され、ベーン
１１の外端面１１ａが回転スリーブ内周面１２に当接す
るが、この回転スリーブ内周面１２は表面粗さが大きく
ベーン外端面ｔｉａとの間に大きな摩擦抵抗か得られる
ことから、回転スリーブ内周面１２とベーン外端面１１
ａとのスＩＪ ノブが抑制され、回転スリーブ５はロー
タ６と一体的に回転する。また、回転スリーブ５は外周
面１７の表面粗さか小さく、また、該外周面１７と円筒
カバー６との間に空気層１８が形成されていることもあ
って、この円筒カバー６に対する摩擦抵抗か小さくなり
、しかも、この外周面１７は窒化層によって表面硬度が
高くなっていることから、回転スリーブ外周面１７の摩
耗が少ない。To explain the operation of the vane pump 1, the working chambers (in the illustrated example, working chambers 13a, 1
3b) is compressed by the vanes 11 by the rotation of the rotor 6, and is discharged from the discharge port 20. During this pump operation, the vane 11 is urged in the direction of protruding from the groove 1D by the centrifugal force caused by the rotation of the rotor 6, and the outer end surface 11a of the vane 11 comes into contact with the inner circumferential surface 12 of the rotating sleeve. Since the circumferential surface 12 has a large surface roughness and a large frictional resistance can be obtained between the inner circumferential surface 12 of the rotating sleeve and the vane outer end surface 11.
The IJ knob is restrained, and the rotating sleeve 5 rotates integrally with the rotor 6. In addition, the surface roughness of the outer peripheral surface 17 of the rotating sleeve 5 is small, and an air layer 18 is formed between the outer peripheral surface 17 and the cylindrical cover 6, so that the frictional resistance against the cylindrical cover 6 is small. Moreover, since the outer circumferential surface 17 has a high surface hardness due to the nitrided layer, the outer circumferential surface 17 of the rotating sleeve suffers less wear.
なお、回転スリーブ５の材料としては、窒化処理によっ
てその内周面の粗さが最も大きくなる片状黒鉛鋳鉄が好
ましいが、この鋳鉄に限らず、球状黒鉛鋳鉄その他の鉄
系材料を適用することができる。Note that flake graphite cast iron is preferred as the material for the rotating sleeve 5, as its inner circumferential surface has the greatest roughness due to nitriding treatment, but it is not limited to this cast iron, and other iron-based materials such as spheroidal graphite cast iron may also be used. I can do it.
また、窒化処理としては、タフトライド処理法など他の
窒化法を採用してもよい。Further, as the nitriding treatment, other nitriding methods such as a tuftride treatment method may be employed.
以上のように、本発明によれば、回転スリーブを鉄系材
料と４し、この内周面および外周面に窒化層を形成し、
内周面の表面粗さを大きく、外周面の表面粗さを小さく
したことから、回転スリーブはロータと一体的に回転す
るため、ベーン外端面の摩耗が少なくなるとともに、回
転スリーブ外周面は耐摩耗性が高くなり、ベーンおよび
回転スリーブの耐久性進向上するという優れた効果が得
られる。As described above, according to the present invention, the rotating sleeve is made of an iron-based material, a nitrided layer is formed on the inner peripheral surface and the outer peripheral surface,
By increasing the surface roughness of the inner circumferential surface and decreasing the surface roughness of the outer circumferential surface, the rotating sleeve rotates integrally with the rotor, reducing wear on the outer end surface of the vane and making the outer circumferential surface of the rotating sleeve more resistant. This has the excellent effect of increasing wear resistance and improving the durability of the vane and rotating sleeve.
図面は本発明の実施態様を例示し、第１図はベーンポン
プの中央縦断面図、第２図は同横断面図、第３図は回転
スリーブ内周面の表層部構造を示す断面図である。
１・・・・・・ベーンポンプ、２・・・・・・ハウジン
グ、３・・・・・・円筒カバー、５・・・・・・回転ス
リーブ、６・・・・・・ロータ、１０・・・・・・溝、
１１・・・・・・ベーン、１２・・・・・・回転スリー
ブ内周面、１３ａ〜１３ｄ・・・・・・作動室、１７・
・・・・・回転スリーブ外周面、２１・・・・・・パー
ライト、２２・・・・・・グラファイト、２３・・・・
・・窒化層、２３ａ・・・・・・突起The drawings illustrate embodiments of the present invention, and FIG. 1 is a central vertical sectional view of the vane pump, FIG. 2 is a cross-sectional view thereof, and FIG. 3 is a sectional view showing the surface layer structure of the inner peripheral surface of the rotating sleeve. . DESCRIPTION OF SYMBOLS 1... Vane pump, 2... Housing, 3... Cylindrical cover, 5... Rotating sleeve, 6... Rotor, 10... ····groove,
11...Vane, 12...Rotating sleeve inner peripheral surface, 13a-13d...Working chamber, 17...
...Rotating sleeve outer peripheral surface, 21...Pearlite, 22...Graphite, 23...
...Nitride layer, 23a...Protrusion
Claims (1)
状α回転スリーブと、このハウジング内において前記回
転スリーブに対して軸心を偏心して回転自在に設けられ
たロータと、このロータに形成した溝に嵌められたベー
ンとを備え、ベーン外端面を回転スリーブに当接させて
回転スリーブとロータとの空間を複数の作動室に区分す
るよう゛にしたポンプにおいて、回転スリーブは鉄系材
料で形成され、該回転スリーブの内周面および外周面に
窒化処理による窒化層が形成され、この内周面の表面粗
さを太き（、外周面の表面粗さを内周面よりも小さくし
たことを特徴とするベーンポンプ。(1) A cylindrical α rotary sleeve rotatably provided in a cylindrical housing, a rotor rotatably provided in the housing with its axis eccentric to the rotary sleeve, and a rotor formed on the rotor. In a pump that is equipped with a vane fitted in a groove, and the outer end surface of the vane is brought into contact with the rotating sleeve to divide the space between the rotating sleeve and the rotor into a plurality of working chambers, the rotating sleeve is made of iron-based material. A nitrided layer is formed by nitriding on the inner and outer peripheral surfaces of the rotating sleeve, and the surface roughness of the inner peripheral surface is increased (the surface roughness of the outer peripheral surface is made smaller than that of the inner peripheral surface). A vane pump characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11235082A JPS593194A (en) | 1982-06-28 | 1982-06-28 | Vane pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11235082A JPS593194A (en) | 1982-06-28 | 1982-06-28 | Vane pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS593194A true JPS593194A (en) | 1984-01-09 |
Family
ID=14584487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11235082A Pending JPS593194A (en) | 1982-06-28 | 1982-06-28 | Vane pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS593194A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5125508A (en) * | 1989-07-06 | 1992-06-30 | Murata Manufacturing Co., Ltd. | Tape-form electronic component package |
-
1982
- 1982-06-28 JP JP11235082A patent/JPS593194A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5125508A (en) * | 1989-07-06 | 1992-06-30 | Murata Manufacturing Co., Ltd. | Tape-form electronic component package |
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