JPH0125911B2 - - Google Patents
Info
- Publication number
- JPH0125911B2 JPH0125911B2 JP19135081A JP19135081A JPH0125911B2 JP H0125911 B2 JPH0125911 B2 JP H0125911B2 JP 19135081 A JP19135081 A JP 19135081A JP 19135081 A JP19135081 A JP 19135081A JP H0125911 B2 JPH0125911 B2 JP H0125911B2
- Authority
- JP
- Japan
- Prior art keywords
- movable ring
- pump
- chamber
- rotor
- pump housing
- 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
Links
- 239000012530 fluid Substances 0.000 claims description 23
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 230000002093 peripheral effect Effects 0.000 description 11
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 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
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
- F04C14/22—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Description
【発明の詳細な説明】
本発明は、ポンプハウジングの内孔内に径方向
へ移動可能に収容した可動リングのロータに対す
る偏心量を変化させて、吐出容量を可変にした可
変容量形ベーンポンプに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a variable displacement vane pump in which the discharge capacity is varied by changing the eccentricity of a movable ring, which is housed in an inner hole of a pump housing so as to be movable in a radial direction, with respect to a rotor.
従来、この種形式の可変容量形ベーンポンプと
して、ポンプハウジングの内周壁と可動リングの
外周間に形成される流体室を２つに区画するとと
もに一方の区画室に連通する吐出通路にオリフイ
スを形成し、このオリフイスの後流側圧力を他方
の区画室に付与することによりオリフイス前後の
差圧を利用して可動リングの偏心量を変化させ、
ロータの回転速度の変動に拘らず圧力流体の流体
作動機器への供給流量を一定に制御するようにし
たものが提案されている。しかしながら、かかる
可変容量形ベーンポンプにおいては、ポンプハウ
ジングの内周壁と可動リングの外周間に形成され
る流体室を２つに区画する手段、オリフイスを形
成する手段、オリフイスの前後の圧力を２つの区
画室へ付与する手段等各手段自体が複雑であり、
ベースポンプの構成が極めて複雑になるという不
都合がある。 Conventionally, in this type of variable displacement vane pump, the fluid chamber formed between the inner peripheral wall of the pump housing and the outer periphery of the movable ring is divided into two, and an orifice is formed in the discharge passage communicating with one of the compartments. By applying pressure on the downstream side of this orifice to the other compartment, the eccentricity of the movable ring is changed using the differential pressure before and after the orifice,
A system has been proposed in which the flow rate of pressurized fluid supplied to fluid-operated equipment is controlled to be constant regardless of fluctuations in the rotational speed of the rotor. However, in such a variable displacement vane pump, there is a means for dividing the fluid chamber formed between the inner circumferential wall of the pump housing and the outer circumference of the movable ring into two, a means for forming an orifice, and a means for dividing the pressure before and after the orifice into two sections. Each method itself, such as the means of applying it to the room, is complicated,
There is a disadvantage that the configuration of the base pump becomes extremely complicated.
本発明は、このような実状に着目してなされた
もので、その主たる目的は、ポンプハウジングの
内孔周壁と可動リングの外周面との間にオリフイ
スを形成して、ポンプハウジングと可動リングと
の間に形成された流体室を２つの作用室に区画す
るように構成し、以つて構成の簡単な可変容量形
ベーンポンプを提供することにあり、さらにはオ
リフイスを容易に変更しえて任意の流量特性が得
られる可変容量形ベーンポンプを提供することに
ある。 The present invention was made in view of the above-mentioned circumstances, and its main purpose is to form an orifice between the inner circumferential wall of the pump housing and the outer circumferential surface of the movable ring, so that the pump housing and the movable ring can be connected to each other. The purpose of the present invention is to provide a variable displacement vane pump with a simple structure, in which the fluid chamber formed between the two is divided into two working chambers, and furthermore, the orifice can be easily changed to adjust the flow rate to any desired flow rate. It is an object of the present invention to provide a variable displacement vane pump with characteristics.
以下、本発明を図面に基づいて説明するに、第
１図および第２図には本発明に係る可変容量形ベ
ーンポンプの第１実施例が示されている。この可
変容量形ベーンポンプ（以下ベースポンプという
ことがある）のポンプハウジング１０は、フロン
トハウジング１１と、ガイドハウジング１２と、
リヤハウジング１３とにより構成されており、ガ
イドハウジング１２内に可動リング２１および多
数のベーン２２を備えたロータ２３を収容する内
孔１２ａが形成されている。 The present invention will be explained below based on the drawings. Figs. 1 and 2 show a first embodiment of a variable displacement vane pump according to the present invention. The pump housing 10 of this variable displacement vane pump (hereinafter sometimes referred to as base pump) includes a front housing 11, a guide housing 12,
A rear housing 13 is formed in the guide housing 12, and an inner hole 12a is formed in the guide housing 12 to accommodate a rotor 23 having a movable ring 21 and a large number of vanes 22.
可動リング２１は、ガイドハウジング１２の内
孔１２ａの径より所定量小径の真円状のもので、
内孔１２ａ内に径方向へ移動可能に収容されてい
て、内孔１２ａの周壁と可動リング２１の外周間
に流体室Ｒを形成している。また、ロータ２３は
フロントハウジング１１に液密的かつ回転可能に
支持した回転軸２４上の一端にスプライン嵌合さ
れており、可動リング２１の内部に収容されて可
動リング２１の内周とロータ２３の外周間にポン
プ室Ｐを形成している。この可動リング２１は、
ガイドハウジング１２の第２図示右側に配設した
レリーフ弁３０と可動リング２１の外周間に介装
された流量調整用のスプリング２５により図示左
方に付勢されて、ガイドハウジング１２の第２図
示左側に配設した最大偏心量規制用のネジ２６に
当接している。これにより、可動リング２１はロ
ータ２３に対して最大量偏心している。 The movable ring 21 has a perfect circular shape and has a diameter smaller than the inner hole 12a of the guide housing 12 by a predetermined amount.
It is accommodated in the inner hole 12a so as to be movable in the radial direction, and a fluid chamber R is formed between the peripheral wall of the inner hole 12a and the outer periphery of the movable ring 21. Further, the rotor 23 is spline-fitted to one end of a rotating shaft 24 that is liquid-tightly and rotatably supported by the front housing 11, and is housed inside the movable ring 21 so that the inner circumference of the movable ring 21 and the rotor 23 are connected to each other. A pump chamber P is formed between the outer peripheries. This movable ring 21 is
The relief valve 30 disposed on the right side of the guide housing 12 in the second diagram and the spring 25 for adjusting the flow rate interposed between the outer periphery of the movable ring 21 biases the guide housing 12 to the left in the diagram. It is in contact with a screw 26 for regulating the maximum eccentricity disposed on the left side. As a result, the movable ring 21 is eccentric to the rotor 23 by the maximum amount.
一方、フロントハウジング１１の内側面には、
吸入ポート１１ａと吐出ポート１１ｂが形成され
ている。吸入ポート１１ａは、フロントハウジン
グ１１に設けた吸入通路１１ｃとポンプ室Ｐの吸
入域とに連通し、また吐出ポート１１ｂはポンプ
室Ｐの吐出域と流体室Ｒとに連通している。 On the other hand, on the inner surface of the front housing 11,
A suction port 11a and a discharge port 11b are formed. The suction port 11a communicates with a suction passage 11c provided in the front housing 11 and the suction area of the pump chamber P, and the discharge port 11b communicates with the discharge area of the pump chamber P and the fluid chamber R.
しかして、フロントハウジング１１の内側面に
設けた長穴１１ｄと圧力プレート１４の内側面に
設けた長穴１４ａには、軸方向に延びるシールピ
ン２７の両端が嵌合されている。このシールピン
２７は、ガイドハウジング１２の内孔１２ａの上
部周壁に液密的に密接している。また、可動リン
グ２１の外周のシールピン２７に対向する部位に
は、シールピン２７に嵌合可能な嵌合溝２１ａが
軸方向に形成されている。この可動リング２１
は、ポンプ室Ｐの流体圧により上方へ押上げられ
て嵌合溝２１ａをシールピン２７に嵌合させてい
る。これにより、シールピン２７は可動リング２
１を第２図示左右方向へ揺動可能に支持している
とともに、当該支持部にてガイドハウジング１２
の内孔周壁と可動リング２１の外周との間をシー
ルしている。また、ガイドハウジング１２の内孔
１２ａの下部周壁には、軸方向に延びる嵌合凹所
１２ｂが形成されていて、この嵌合凹所１２ｂに
間隙調整部材２８が嵌合固着されている。この間
隙調整部材２８は、流体室Ｒ内にわずかに突出し
ていて、その内側面２８ａと可動リング２１の外
周面との間にオリフイスＯを形成しており、かつ
シールピン２７とともに流体室Ｒを吐出ポート１
１ｂが開口する第１作用室r1と吐出孔１２ｃが開
口しかつスプリング２５が位置する第２作用室r2
とに区画している。これら両作用室r1，r2は、オ
リフイスＯを通して互に連通している。また、間
隙調整部材２８の内側面２８ａはシールピン２７
を曲率中心とする円弧状に形成されていて、可動
リング２１の揺動によりロータ２３に対する可動
リング２１の偏心量が変化しても、オリフイス開
度が常に一定になるように構成されている。 Thus, both ends of a seal pin 27 extending in the axial direction are fitted into the elongated hole 11d provided on the inner surface of the front housing 11 and the elongated hole 14a provided on the inner surface of the pressure plate 14. This seal pin 27 is in fluid-tight contact with the upper peripheral wall of the inner hole 12a of the guide housing 12. Furthermore, a fitting groove 21a into which the seal pin 27 can be fitted is formed in the axial direction at a portion of the outer periphery of the movable ring 21 that faces the seal pin 27. This movable ring 21
is pushed upward by the fluid pressure in the pump chamber P, causing the fitting groove 21a to fit into the seal pin 27. As a result, the seal pin 27 is attached to the movable ring 2.
The guide housing 12 is supported so as to be swingable in the left and right directions shown in the second figure.
A seal is formed between the peripheral wall of the inner hole and the outer periphery of the movable ring 21. Further, a fitting recess 12b extending in the axial direction is formed in the lower peripheral wall of the inner hole 12a of the guide housing 12, and a gap adjustment member 28 is fitted and fixed in the fitting recess 12b. The gap adjustment member 28 slightly protrudes into the fluid chamber R, forms an orifice O between its inner surface 28a and the outer peripheral surface of the movable ring 21, and together with the seal pin 27 discharges the fluid chamber R. Port 1
A first action chamber r1 in which the opening 1b is open, and a second action chamber r2 in which the discharge hole 12c is open and the spring 25 is located.
It is divided into These two working chambers r 1 and r 2 communicate with each other through an orifice O. Further, the inner surface 28a of the gap adjustment member 28 is connected to the seal pin 27.
It is formed in an arc shape with the center of curvature at , and is configured so that the opening degree of the orifice is always constant even if the amount of eccentricity of the movable ring 21 with respect to the rotor 23 changes due to the swinging of the movable ring 21.
このように構成したベーンポンプにおいては、
非駆動時可動リング２１は第２図に示すように最
大量偏心しており、エンジンの駆動により回転軸
２４およびこれと一体のロータ２３が回転する
と、吸入通路１１ｃおよび吸入ポート１１ａを通
してポンプ室Ｐに吸入された流体は圧力流体とし
て吐出ポート１１ｂを通して第１作用室r1へ吐出
され、さらにオリフイスＯを通して第２作用室r2
へ流入して、吐出孔１２ｃおよび図示しない吐出
通路を通して適宜の流体作動機器へ供給される。
この間、回転軸２４およびロータ２３の回転速度
（ポンプ回転速度）が増大して第１作用室r1への
圧力流体の吐出量が増大すると、第１作用室r1と
第２作用室r2間に生じた差圧により可動リング２
１がスプリング２５に抗して第２図示右方へ揺動
される。この結果、ロータ２３に対する可動リン
グ２１の偏心量は差圧の増大（ポンプ回転速度の
増大）に応じて減少してポンプ１回転当りの吐出
量を減少させ、ポンプ回転速度の増大に拘らず作
動機器へ供給する圧力流体の供給量を一定に制御
する。すなわち、当該ベーンポンプのポンプ回転
速度に対する圧力流体の供給流量の関係は、第４
図の実線Ａに示すグラフのようになり、従来の可
変容量形ベーンポンプと同様の流量特性を有して
いる。なお、第２作用室r2の圧力が設定圧を越る
と、レリーフ弁３０のスプール３１がスプリング
３２に抗して変位され、第２作用室r2の圧力流体
をドレンする。 In the vane pump configured in this way,
When not driven, the movable ring 21 is eccentric by the maximum amount, as shown in FIG. The sucked fluid is discharged as pressure fluid into the first working chamber r1 through the discharge port 11b , and further through the orifice O to the second working chamber r2 .
and is supplied to appropriate fluid operating equipment through the discharge hole 12c and a discharge passage (not shown).
During this time, when the rotational speed of the rotating shaft 24 and the rotor 23 (pump rotational speed) increases and the amount of pressure fluid discharged to the first working chamber r1 increases, the first working chamber r1 and the second working chamber r2 Due to the differential pressure generated between the movable ring 2
1 is swung to the right in the second figure against the spring 25. As a result, the amount of eccentricity of the movable ring 21 with respect to the rotor 23 decreases in accordance with the increase in differential pressure (increase in pump rotation speed), reducing the discharge amount per pump rotation, and the pump operates regardless of the increase in pump rotation speed. Controls the amount of pressure fluid supplied to equipment at a constant level. In other words, the relationship between the supply flow rate of pressure fluid and the pump rotation speed of the vane pump is expressed by the fourth
The graph is as shown by the solid line A in the figure, and the flow rate characteristics are similar to those of the conventional variable displacement vane pump. Note that when the pressure in the second working chamber r2 exceeds the set pressure, the spool 31 of the relief valve 30 is displaced against the spring 32, draining the pressure fluid in the second working chamber r2 .
このように、当該ベーンポンプにおいては、従
来の可変容量形ベーンポンプと同様の流量特性を
有しているが、ポンプハウジング１０の構成部材
に設けたシールピン２７と間隙調整部材２８によ
り、ポンプハウジング１０、可動リング２１等に
大きな変更を加えることなく、流体室Ｒを両作用
室r1，r2に区画するとともに両作用室r1，r2に差
圧を生じさせるオリフイスＯを形成しているにす
ぎないため、従来の可変容量形ベーンポンプに比
しその構成が極めて簡単になる。 As described above, the vane pump has the same flow characteristics as the conventional variable displacement vane pump, but the seal pin 27 and the gap adjustment member 28 provided in the components of the pump housing 10 allow the pump housing 10 to be movable. Without making any major changes to the ring 21 etc., the fluid chamber R is divided into both working chambers r 1 and r 2 and an orifice O is formed that creates a pressure difference between both working chambers r 1 and r 2 . Therefore, the configuration is extremely simple compared to conventional variable displacement vane pumps.
なお、シールピン２７によつて可動リング２１
を揺動変位可能に支持する構成は、本発明にとつ
て必ずしも必須要件ではなく、可動リング２１を
直線変位させるように構成することもできる。 Note that the movable ring 21 is fixed by the seal pin 27.
The configuration in which the movable ring 21 is supported in a swingable manner is not necessarily an essential requirement for the present invention, and the movable ring 21 may be configured to be linearly displaced.
第３図には、本発明の第２実施例が示されてい
る。この第２実施例に示したベーンポンプは、間
隙調整部材を変更した以外第１実施例のベーンポ
ンプと同様に構成されている。第２実施例に示し
たベーンポンプの間隙調整部材２８′においては、
その内側面２８a′が傾斜状に形成されていて、内
側面２８a′の流体室Ｒ内への突出量が図示右方へ
いくにつれて漸次増大するようになつている。こ
のため、間隙調整部材２８′の内側面２８a′と可
動リング２１の外周面との間に形成されたオリフ
イスO′のオリフイス開度は、可動リング２１の
図示右方への揺動により漸次減少する。従つて、
当該ベーンポンプにおいては、両作用室r1，r2間
に生ずる差圧はポンプ回転速度に対応して生ずる
差圧より大きくなつて可動リング２１が揺動さ
れ、作動機器へ供給される圧力流体は第４図の２
点鎖線Ｂで示すように、ポンプ回転速度の増大に
応じて漸次減少する。また、この間隙調整部材２
８′に換えて内側面の形状を異にする間隙調整部
材を用いて、可動リング２１の揺動量に対するオ
リフイス開度の減少を変更すれば、任意の流量特
性が得られる。 A second embodiment of the invention is shown in FIG. The vane pump shown in the second embodiment has the same structure as the vane pump in the first embodiment except that the gap adjusting member is changed. In the vane pump gap adjustment member 28' shown in the second embodiment,
The inner surface 28a' is formed in an inclined shape, and the amount of protrusion of the inner surface 28a' into the fluid chamber R gradually increases toward the right in the figure. Therefore, the opening degree of the orifice O' formed between the inner surface 28a' of the gap adjustment member 28' and the outer peripheral surface of the movable ring 21 gradually decreases as the movable ring 21 swings to the right in the figure. do. Therefore,
In this vane pump, the differential pressure generated between the working chambers r 1 and r 2 becomes larger than the differential pressure generated in accordance with the pump rotation speed, and the movable ring 21 is swung, and the pressure fluid supplied to the operating equipment is Figure 4 2
As shown by the dotted chain line B, it gradually decreases as the pump rotation speed increases. In addition, this gap adjustment member 2
By using a gap adjustment member whose inner surface has a different shape in place of 8', and changing the decrease in the opening degree of the orifice relative to the amount of rocking of the movable ring 21, an arbitrary flow rate characteristic can be obtained.
以上説明したように、本発明はポンプハウジン
グ１０の内孔１０ａ内に径方向へ移動可能に収容
した可動リング２１の内部に多数のベーン２２を
備えたロータ２３を収容するとともに、可動リン
グ２１をその外周に当接したバネ部材２５により
一側へ付勢してロータ２３に対して偏心させ、か
つポンプハウジング１０の内孔１２ａ周壁と可動
リング２１の外周間に形成された流体室Ｒに、可
動リング２１の内周とロータ２３の外周間に形成
したポンプ室Ｐの吐出域に連通する吐出ポート１
１ｂと外部に連通する吐出孔１２ｃとをそれぞれ
開口させてなる可変容量形ベーンポンプにおい
て、吐出ポート１１ｂと吐出孔１２ｃとの間に可
動リング２１をポンプハウジング１０の内孔１２
ａ周壁に液密的に密接するシール部（シールピン
２７）を設けるとともにポンプハウジング１０の
内孔１２ａ周壁のシール部２７とは反対側の部位
に間隙調整部材２８，２８′を設け、間隙調整部
材２８，２８′の内周面と可動リング２１の外周
とによりオリフイスを形成して、吐出ポート１１
ｂが開口する第１作用室r1と吐出孔１２ｃが開口
しかつバネ部材２５が位置する第２作用室r2とに
区画したことにその構成上の特徴がある。従つ
て、本発明によれば、従来に比し流量制御構成の
簡単な可変容量形ベーンポンプを提供することが
できる。また、本発明によれば、間隙調整部材２
８，２８′を上記のごとく配置したので、可動リ
ング２１の変位を利用して任意の流量特性を得る
ことができ、任意の流量特性を有する可変容量形
ベーンポンプを容易に提供することができる。 As described above, the present invention accommodates the rotor 23 provided with a large number of vanes 22 inside the movable ring 21 which is accommodated in the inner hole 10a of the pump housing 10 so as to be movable in the radial direction, and the movable ring 21 is The fluid chamber R is biased toward one side by a spring member 25 in contact with the outer periphery of the rotor 23 to be eccentric with respect to the rotor 23, and is formed between the peripheral wall of the inner hole 12a of the pump housing 10 and the outer periphery of the movable ring 21. A discharge port 1 communicating with a discharge area of a pump chamber P formed between the inner circumference of the movable ring 21 and the outer circumference of the rotor 23
1b and a discharge hole 12c that communicates with the outside, a movable ring 21 is inserted between the discharge port 11b and the discharge hole 12c in the inner hole 12 of the pump housing 10.
A seal part (seal pin 27) that is in close contact with the peripheral wall a in a liquid-tight manner is provided, and gap adjusting members 28, 28' are provided on the side opposite to the seal part 27 of the inner hole 12a peripheral wall of the pump housing 10. An orifice is formed by the inner peripheral surfaces of 28 and 28' and the outer periphery of the movable ring 21, and the discharge port 11
Its structural feature lies in the fact that it is divided into a first working chamber r1 in which the discharge hole 12c is open and a second working chamber r2 in which the discharge hole 12c is open and the spring member 25 is located. Therefore, according to the present invention, it is possible to provide a variable displacement vane pump with a simpler flow control configuration than the conventional one. Further, according to the present invention, the gap adjustment member 2
8, 28' are arranged as described above, it is possible to obtain any flow rate characteristics by utilizing the displacement of the movable ring 21, and it is possible to easily provide a variable displacement vane pump having any flow rate characteristics.
第１図は本発明の第１実施例に係るベーンポン
プの縦断面図、第２図は第１図の―線に沿う
縦断面図、第３図は第２実施例に係るベーンポン
プの第２図に対応する縦断面図、第４図は両ベー
ンポンプの流量特性を示すグラフである。
符号の説明、１０…ポンプハウジング、１１ａ
…吸入ポート、１１ｂ…吐出ポート、１２ａ…内
孔、１２ｃ…吐出孔、２１…可動リング、２３…
ロータ、２５…スプリング、２７…シールピン、
２８，２８′…間隙調整部材、２８ａ，２８a′…
内側面、Ｏ，O′…オリフイス、Ｐ…ポンプ室、
Ｒ…流体室、r1，r2…作用室。
FIG. 1 is a longitudinal sectional view of a vane pump according to a first embodiment of the present invention, FIG. 2 is a longitudinal sectional view taken along the line - in FIG. 1, and FIG. 3 is a second diagram of a vane pump according to a second embodiment. FIG. 4 is a graph showing the flow characteristics of both vane pumps. Explanation of symbols, 10...Pump housing, 11a
...Suction port, 11b...Discharge port, 12a...Inner hole, 12c...Discharge hole, 21...Movable ring, 23...
Rotor, 25...Spring, 27...Seal pin,
28, 28'... Gap adjustment member, 28a, 28a'...
Inner surface, O, O'...orifice, P...pump chamber,
R...fluid chamber, r1 , r2 ...action chamber.
Claims (1)
能に収容した可動リングの内部に多数のベーンを
備えたロータを収容するとともに、前記可動リン
グをその外周に当接したバネ部材により一側へ付
勢して前記ロータに対して偏心させ、かつ前記ポ
ンプハウジングの内孔周壁と前記可動リングの外
周間に形成された流体室に、前記可動リングの内
周と前記ロータの外周間に形成したポンプ室の吐
出域に連通する吐出ポートと外部に連通する吐出
孔とをそれぞれ開口させてなる可変容量形ベーン
ポンプにおいて、前記吐出ポートと吐出孔との間
に前記可動リングを前記ポンプハウジングの内孔
周壁に液密的に密接するシール部を設けるととも
に前記ポンプハウジングの内孔周壁の前記シール
部とは反対側の部位に間隙調整部材を設け、この
間隙調整部材の内周面と前記可動リングの外周と
によりオリフイスを形成して、前記流体室を前記
吐出ポートが開口する第１作用室と前記吐出孔が
開口しかつ前記バネ部材が位置する第２作用室と
に区画したことを特徴とする可変容量形ベーンポ
ンプ。1. A rotor having a large number of vanes is housed inside a movable ring that is movable in the radial direction in the inner hole of the pump housing, and the movable ring is attached to one side by a spring member that is in contact with the outer periphery of the movable ring. a pump that is biased eccentrically with respect to the rotor, and that is formed between the inner circumference of the movable ring and the outer circumference of the rotor, in a fluid chamber formed between the inner circumferential wall of the pump housing and the outer circumference of the movable ring; In a variable displacement vane pump having a discharge port that communicates with a discharge area of a chamber and a discharge hole that communicates with the outside, the movable ring is placed between the discharge port and the discharge hole on the inner circumferential wall of the pump housing. A seal portion is provided in fluid-tight contact with the pump housing, and a gap adjustment member is provided on the opposite side of the seal portion of the inner circumferential wall of the pump housing, and the inner circumference of the gap adjustment member and the outer circumference of the movable ring are provided. An orifice is formed by the above, and the fluid chamber is divided into a first action chamber in which the discharge port opens and a second action chamber in which the discharge hole opens and the spring member is located. Capacitive vane pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19135081A JPS5893978A (en) | 1981-11-28 | 1981-11-28 | Variable capacity vane pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19135081A JPS5893978A (en) | 1981-11-28 | 1981-11-28 | Variable capacity vane pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5893978A JPS5893978A (en) | 1983-06-03 |
| JPH0125911B2 true JPH0125911B2 (en) | 1989-05-19 |
Family
ID=16273106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19135081A Granted JPS5893978A (en) | 1981-11-28 | 1981-11-28 | Variable capacity vane pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5893978A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102459815A (en) * | 2009-04-21 | 2012-05-16 | Slw汽车公司 | Vane pump with improved rotor and vane extension ring |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3425013A1 (en) * | 1984-07-06 | 1986-01-16 | Mannesmann Rexroth GmbH, 8770 Lohr | HYDROPUMP |
| US5538400A (en) * | 1992-12-28 | 1996-07-23 | Jidosha Kiki Co., Ltd. | Variable displacement pump |
| JP2932236B2 (en) * | 1994-02-28 | 1999-08-09 | 自動車機器株式会社 | Variable displacement pump |
| JP3683608B2 (en) * | 1995-01-26 | 2005-08-17 | ユニシア ジェーケーシー ステアリングシステム株式会社 | Variable displacement pump |
| JPH09273487A (en) * | 1996-04-08 | 1997-10-21 | Jidosha Kiki Co Ltd | Variable displacement type pump |
| JPH1193856A (en) | 1997-09-18 | 1999-04-06 | Jidosha Kiki Co Ltd | Variable-displacement pump |
| JPH1193860A (en) * | 1997-09-18 | 1999-04-06 | Jidosha Kiki Co Ltd | Variable-displacement pump |
| JPH1193862A (en) * | 1997-09-19 | 1999-04-06 | Jidosha Kiki Co Ltd | Variable-displacement pump |
| JP3866410B2 (en) * | 1998-04-23 | 2007-01-10 | ユニシア ジェーケーシー ステアリングシステム株式会社 | Variable displacement pump |
| DE19957886A1 (en) | 1998-12-07 | 2000-07-20 | Bosch Braking Systems Co | Displacement pump eg for power assisted vehicle steering systems |
| WO2003078843A1 (en) * | 2002-03-16 | 2003-09-25 | In-Sook Oh | Vane pump |
| JP4787637B2 (en) * | 2006-03-14 | 2011-10-05 | 株式会社ショーワ | Variable displacement pump |
| DE112007003655B4 (en) | 2007-09-20 | 2016-08-11 | Hitachi, Ltd. | Vane pump with variable capacity |
| KR101251535B1 (en) * | 2011-11-30 | 2013-04-05 | 현대자동차주식회사 | Oil pump for vehicle |
-
1981
- 1981-11-28 JP JP19135081A patent/JPS5893978A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102459815A (en) * | 2009-04-21 | 2012-05-16 | Slw汽车公司 | Vane pump with improved rotor and vane extension ring |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5893978A (en) | 1983-06-03 |
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