CN1764784A - Vane pump - Google Patents
Vane pump Download PDFInfo
- Publication number
- CN1764784A CN1764784A CN03826322.XA CN03826322A CN1764784A CN 1764784 A CN1764784 A CN 1764784A CN 03826322 A CN03826322 A CN 03826322A CN 1764784 A CN1764784 A CN 1764784A
- Authority
- CN
- China
- Prior art keywords
- slit
- rotor
- length
- formation portion
- slit formation
- 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
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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
- F04C2/3446—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 inner and outer member being in contact along more than one line or surface
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- 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
- F01C21/08—Rotary pistons
-
- 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
- F04C2230/00—Manufacture
- F04C2230/60—Assembly methods
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
A vane pump comprises a vane rotor (9) rotatably received in a cam ring (8), and vanes (16) held for projection and retraction in a plurality of slots (15) radially formed in the outer periphery of the vane rotor substantially at circumferentially equispaced intervals. The circumferential length (L) of a material-removed section (18) between two adjacent slot forming sections (17, 17) is set greater than the circumferential length (L1) of each slot forming section so that even if the material-removed sections and the slot forming sections of adjacent vane rotors fit together on a parts feeder, such fitting is not a tight fit but a loose fit. This prevents rotors being fed on the parts feeder from connecting to each other, thus preventing the efficiency of automatic assembly operation from lowering.
Description
Technical field
The present invention relates to be used for the vane pump of oil pressure supply source etc. of the power steering gear of vehicle.
Background technique
This kind is used for vehicle, provided various products in the past as vane pump always, and as one of them, the spy who issues in the Japan special permission Room opens the invention described in the flat 9-324767 communique for well-known.
This vane pump is taken in stator in the inside of pump case, simultaneously, rotates in this stator and freely is provided with the vane rotor that forms the pressure chamber between the inner peripheral surface of outer circumferential face and stator.
At the peripheral part of this vane rotor, on the equally spaced position of circumferencial direction, form a plurality of slits along the radiation direction, laminal blade is supported in the inside in this each slit respectively with freely coming in and going out to the inner peripheral surface direction of described stator.Described rotor links with the live axle that leads in the pump case interpolation.The driven pulley of this live axle by being installed in the outer end side transmits rotatory force from the bent axle of motor with synchronous belt.
In addition, as long as vane rotor rotates along with the rotating drive of described live axle, each blade is outstanding from the slit with the pressure of back pressure chamber, and rotate on the inner peripheral surface sliding contact limit of the front end limit of each blade and stator.Therefore, can discharge to exhaust port by each blade compresses limit on the limit, implement the effect of pump from the working fluid that the suction port that forms in pump case flows in each interlobate pump chamber.
Thereby, in described existing vane pump, there is peripheral part at described rotor to form that the compartment of terrain forms notch part on the outer circumferential face beyond the slit formation portion in described each slit recently, for example satisfy the requirement that reduces cost by the material of cutting down the rotor that is shaped with sintered alloy, simultaneously, by realizing enlarging the volume of pressure chamber, performance reduces the effect of the pulsation of pump.
Yet, on the outer circumferential face of rotor, form notch part with interval, length occasion much at one at the circumferencial direction of the slit formation portion of the length of this each notch part circumferencial direction and convex, a plurality of rotors that sintering is processed into are being accommodated on the production line on the parts feeder, during slight interference is carried at grade mutually, become closely chimeric, interconnected state with another slit formation portion of adjacency in the notch part of a rotor.
Therefore, when being transported in the automatic installation apparatus, cause the operation deterioration of installing automatically to interconnective rotor with parts feeder.
Summary of the invention
The present invention proposes in view of above-mentioned existing technical problem, a first aspect of the present invention, position beyond the slit formation portion in the slit of the outer circumferential face that forms rotor forms notch part, simultaneously, it is longer than the length of the circumferencial direction of described each slit formation portion to set the length of circumferencial direction of the described notch part between two slit formation portions of described adjacency.
According to the present invention, because the length of the circumferencial direction of setting notch part is longer than the length of the circumferencial direction of described each slit formation portion, when on parts feeder, loading and transporting a plurality of rotor of thermal sintering, even each rotor is approaching mutually, slight interference and the slit formation portion of the other rotor of chimeric adjacency on the notch part of a rotor, since be not chimeric closely be to be in so-called movable chimeric status, rotor is not connected to each other under separated state and transports.
As a result, each rotor can transport to automatic installation apparatus reposefully with parts feeder, can prevent the decline of installation exercise.
A second aspect of the present invention, the length of setting the circumferencial direction of described slit formation portion is at least more than three times of opening length in described slit.
According to the present invention, even make the length that the slit forms the circumferencial direction of portion as much as possible little by the notch part that on the outer circumferential face of each rotor, forms, because its length is more than three times of opening length in slit, still can guarantee the rigidity of this slit formation portion fully.Thereby, by release effect (pumping action), can fully resist and act on this blade and the big load direction of rotation direction along with each blade of rotor rotation, can prevent that slit formation portion from deforming.
A third aspect of the present invention, each slit that forms convex by described each notch part form portion the rotor rotation direction and with each external end edge of this direction of rotation side on form first chamfered section, simultaneously, the root of described slit formation portion and and the joint of described notch part between form second chamfered section, the radius of curvature of setting this second chamfered section is bigger than first chamfered section.
According to the present invention, as mentioned above, in transport each rotor process with parts feeder, in the notch part of the rotor that adjoins each other and slit formation portion when chimeric, even a rotor contacts with second chamfered section of another rotor with first chamfered section, because the radius of curvature of second chamfered section is bigger than first chamfered section, can not be closely chimeric mutually, often form discerptible state simply.Thereby installation exercise further becomes easy automatically.
A fourth aspect of the present invention is set with the length at the position of this rotor rotation direction opposition side longlyer than the length at the position of rotor rotation direction side, and described rotor rotation direction is the center with the described slit of described slit formation portion.
According to the present invention, because bigger, can resist the big load of support fully to the direction of rotation direction that produces with described each blade with the rigidity at the position of rotor rotation direction opposition side, improve the durability of rotor.
Description of drawings
Fig. 1 is the sectional arrangement drawing of the vane pump of expression first embodiment of the invention;
Fig. 2 is the A-A line sectional drawing of Fig. 1;
Fig. 3 is the vane rotor that provides of present embodiment and the front elevation of stator;
Fig. 4 is the B-B line sectional drawing of Fig. 3;
Fig. 5 is the C portion enlarged view of Fig. 3;
Fig. 6 is the major component enlarged view of expression second embodiment of the invention.
Embodiment
Below, the mode of execution of vane pump of the present invention is described in detail in detail with reference to the accompanying drawings.
This vane pump is the pump that is applicable to as the supply source of the oil pressure mechanical oil-pressures such as power steering gear of supply vehicle.As shown in Figure 1, its mainly by the pump case 1 on the cylinder body that is fixed on internal-combustion engine with screw etc., be configured in pump main body 2 in this pump case 1 and a tip side and insert logical live axle 3 in the inside of pump case 1 and constitute.
Described pump case 1 is made up of the pump housing 6 with the bulk that sucks path 4 and drain passageway 5 and the pump cover 7 that combines with its pump housing 6 as shown in Figures 1 and 2, is provided with the space portion of placing pump main body 2 between this pump housing 6 and pump cover 7.
Described pump main body 2 is as Fig. 1～shown in Figure 3, comprises accommodating the stator 8 that is configured in described pump cover 7 inside, rotating the pair of side plates 10,11 that freely is arranged on the vane rotor 9 of these stator 8 inboards and is configured in described stator 8 both sides.
Described stator 8 uses the chimeric locating stud of cotter way 8b, 8c 13,13 of putting with a pair of small semicircle shape that forms on the position of 180 ° of the cardinal principles of outer circumferential face to be positioned at circumferencial direction on the pump case 1 as shown in Figure 3, and simultaneously, inner peripheral surface 8a forms ellipticity substantially.
Described vane rotor 9 usefulness sintered alloy unitary mouldings are discoid substantially, are divided into circular substantially pump chamber 14 between the inner peripheral surface 8a of outer circumferential face and stator 8.In addition, in the central authorities of vane rotor 9, the breakthrough form toothing is in conjunction with the zigzag fashion hole 9b of the front end 3a of described live axle 3, and described live axle 3 connects described side plate 10,11.Simultaneously, at peripheral part, on the uniformly-spaced position of circumferencial direction, form 10 slits 15 radially.This each slit 15 keeps laminal blade 16 in inside to radiation direction free sliding ground respectively, simultaneously, form in the bottom and to make each blade 16 to projected direction, front end 16a from the slit 15 opening end 15a to the outstanding back pressure chamber 15a of the inner peripheral surface 8a of stator 8 direction.
In addition, this vane rotor 9 forms circular-arc weight reduction portion 18 as Fig. 3～shown in Figure 6, and it is the notch part on the position beyond this slit formation portion 17 in described each slit 15 that forms outer circumferential face.
Described each slit formation portion 17, as shown in Figure 5, existence by each weight reduction portion 18 forms convex respectively, simultaneously, the length L of the circumferencial direction of each weight reduction portion 18 of 17,17 in two slit formation portions of described adjacency is set longlyer than the length L 1 of the circumferencial direction of described each slit formation portion 17.
The entire length L1 of slit formation portion 17 its circumferencial directions is set at more than three times of opening length L 2 in described slit 15 at least.In addition, on the approximate centre position of the circumferencial direction of described slit formation portion 17, form described slit 15, with this slit 15 vane rotor 9 that is the center and sense of rotation and to oppose the position 17a of side identical substantially with length L 3, the L4 of the circumferencial direction separately of the position 17b of sense of rotation side.
And then vane rotor 9 forms the 3rd circular chamfered section 17e on the inside circumference direction of the described slit formation portion 17 of peripheral part and weight reduction portion 18, and it is used to prevent take place incident burning knurl when this vane rotor 9 of thermal sintering.
Described live axle 3 transmits the follower 19 that drives usefulness being equipped with from the outstanding the other ends of the pump housing 6, will transmit the power of motor by twisting in the outer belt of figure on this follower 19.
The side plate 10 of described side's side and the end face crimping of the pump housing 6, on this pressure contact portion, as shown in Figure 2, the pairing left and right suction port 20 that forms in pump body 2 sides is connected with the suction path 4 that is had in the pump housing 6.
Between the inner peripheral surface of the outer circumferential face of pump body 2 and pump cover 7, be provided with the pressure chamber 22 of the start oil that inflow discharges from the exhaust port 21 that forms at pump body 2.This pressure chamber 22 and the drain passageway 5 that is located at the pump housing 6 with this drain passageway 5 radially the vent pathway 24 that forms of opposition side be connected side by side.
In described path 5, be provided with variable restrictor device 25, and be provided with escape cock 26 with the front and back pressure reduction servo-actuated of variable restrictor device 25 at the upper reaches of vent pathway 24 end.
Described variable restrictor device 25 comprises: the guiding valve putting hole 27 that forms on the end face of the pressure chamber of the pump housing 6 22 sides; Advance and retreat freely are placed in this guiding valve putting hole 27, according to the guiding valve 28 of the opening area of its advance and retreat position increase and decrease path 5; This guiding valve 28 to the pressured spring 29 of pressure chamber's 22 sides.
This variable restrictor device 25 by balanced action in the action of advancing and retreat of the elastic force of the oil pressure of the pressure chamber 22 of an end of guiding valve 28 and spring 29, simultaneously, set guiding valve 28 with initial position that side plate 10 contact on the opening area of drain passageway 5 be maximum.In an exhaust port 21 that forms on the pump body 2 position upper shed relative in side plate 10 with the end face of guiding valve 28.
Pressure in 30a side variable restrictor device 25 downstream sides, the bottom of described guiding valve putting hole 30 imports path 23 by pressure and imports.One end face of described guiding valve 31 is to pressure chamber's 22 sides, and therefore, because the pressure effect of the front and back of described variable restrictor device 25, escape cock 26 will be according to the increase and decrease of the pressure reduction before and after it control from the flow of floss hole 33 rows to vent pathway 24 in the front and back of guiding valve 31.
Thereby, according to this mode of execution, when the rotating speed of live axle 3 (vane rotor 9) hangs down, because variable restrictor device 25 is opened under the maximum state drain passageway 5, the power of escape cock 26 usefulness springs 32 is closed floss hole 33, so the increase of corresponding rotating speed, the supply flow of drain passageway 5 also increases.
When the rotational velocity of live axle 3 high to a certain degree, when the front and back differential pressure of variable restrictor device 25 surpasses setting value, because open floss hole 33 with the guiding valve 31 of the escape cock 26 of differential pressure servo-actuated before and after it, discharge start oil from vent pathway 24, so can suppress the increase of the supply oil mass of drain passageway 5.
And then, increase the rotational velocity of live axle 3 again from this state, the guiding valve 28 of variable restrictor device 25 utilize pressure chamber's 22 sides start oil oil pressure antagonistic spring 29 elastic force and retreat, will reduce the opening area of drain passageway 5 gradually.Thus, the supply oil mass of drain passageway 5 reduces gradually, obtains so-called blowing down (Off ロ-ダ ウ Application) characteristic.
According to this mode of execution, because form a plurality of weight reduction portion 18 at interval, so can realize cutting down metallic material and reduce pulsation at the outer circumferential face of vane rotor 9.
And, because the length L of the circumferencial direction of each weight reduction portion 18 of setting is longer than the length L 1 of the circumferencial direction of each slit formation portion 17, even in the process of a plurality of vane rotors 9 that transport thermal sintering with parts feeder, even the slit formation portion 17 of another vane rotor 9 of chimeric adjacency in the weight reduction portion 18 of a vane rotor 9, because can not be closely chimeric and form so-called movable chimeric status, mutual vane rotor 9 can not connect, and can transport at state separated from each other.
As a result, each rotor can be sent to automatic installation apparatus swimmingly with parts feeder, can prevent the deterioration of installation exercise.
In addition, even the slit that is produced by described weight reduction portion 18 being formed the length L 1 of the circumferencial direction of portion 17 makes as much as possible little, because setting its length L I is more than three times of opening length L 2 in described slit 15, can fully guarantee the rigidity of this slit formation portion 17.
Thereby, utilization is along with the release effect (pumping action) of each blade 16 of the rotation of vane rotor 9, fully antagonism on this blade 16 with the big load direction of rotation direction, when improving the holding strength of blade 16, can prevent that slit formation portion 17 from deforming.
Because the radius of curvature of the second position 17d of the described slit of setting formation portion 17 is bigger than the radius of curvature of the first position 17c, as previously mentioned, in parts feeder carrying with each vane rotor 9, in the weight reduction portion 18 of the vane rotor 9 that adjoins each other and slit formation portion 17 when chimeric, closely not chimeric mutually, but the often state of simple separation become.Thereby the placement operation becomes easier.
Fig. 6 represents second mode of execution, setting vane rotor 9 is the center with the formation position in the described slit 15 of described slit formation portion 17, and makes the length L 3 of position 17a of direction of rotation side of this vane rotor 9 longer than the length L 4 of the position 17b of the sense of rotation side of vane rotor 9.
Thereby, because become bigger with the rigidity of the position 17a of the direction of rotation side of vane rotor 9, can resist fully support by described blade 16 that produce with the big load direction of rotation direction, improve the durability of rotor.
The invention is not restricted to the structure of described each mode of execution, for example, also can change the degree of depth of weight reduction portion 18 and the length of circumferencial direction arbitrarily.
Claims (4)
1. vane pump, it comprises: stator, it is taken in and is configured in the pump case; Rotor, its rotation freely is accommodated in this stator, rotates with drive shaft; A plurality of slits, the peripheral part of its this rotor forms along the radiation direction; Blade, its inner peripheral surface direction to described stator is come in and gone out and is freely remained in this each slit, it is characterized in that, on the position beyond the slit formation portion in the described slit of the outer circumferential face that forms described rotor, form notch part, simultaneously, it is longer than the length of the circumferencial direction of described each slit formation portion to set the length of circumferencial direction of the described notch part between two slit formation portions of described adjacency.
2. vane pump as claimed in claim 1 is characterized in that, the length of setting the circumferencial direction of described slit formation portion is at least more than three times of opening length in described slit.
3. vane pump as claimed in claim 1 or 2, it is characterized in that, each slit that forms convex by described each notch part form portion the rotor rotation direction and with each external end edge of this direction of rotation side on form first chamfered section, simultaneously, the root of described slit formation portion and and the joint of described notch part between form second chamfered section, the radius of curvature of setting this second chamfered section is bigger than first chamfered section.
4. as each described vane pump in the claim 1～3, it is characterized in that, setting is longer than the length at the position of rotor rotation direction side with the length at the position of rotor rotation direction opposition side, and described rotor rotation direction is the center with the described slit of described slit formation portion.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2003/008619 WO2005003562A1 (en) | 2003-07-07 | 2003-07-07 | Vane pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1764784A true CN1764784A (en) | 2006-04-26 |
| CN100379990C CN100379990C (en) | 2008-04-09 |
Family
ID=33562097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB03826322XA Expired - Fee Related CN100379990C (en) | 2003-07-07 | 2003-07-07 | Vane pump |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2005003562A1 (en) |
| CN (1) | CN100379990C (en) |
| WO (1) | WO2005003562A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7566212B2 (en) | 2006-12-08 | 2009-07-28 | Matsushita Electric Works, Ltd. | Vane pump with blade base members |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008059720A1 (en) * | 2008-11-29 | 2010-06-02 | Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt | Vane pump |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56115889A (en) * | 1980-02-14 | 1981-09-11 | Fusetora Kinzoku Kogyo Kk | Rotary pump |
| JPS61181888U (en) * | 1985-05-03 | 1986-11-13 | ||
| JPH035986U (en) * | 1989-05-31 | 1991-01-21 | ||
| JP4860829B2 (en) * | 2000-07-17 | 2012-01-25 | 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 |
| JP3861594B2 (en) * | 2000-12-15 | 2006-12-20 | 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 | Oil pump |
| JP2002229879A (en) * | 2001-01-31 | 2002-08-16 | Matsushita Electric Ind Co Ltd | Device operating environment setting system, device control system, device control method and operation management system |
| CA2443367C (en) * | 2001-04-05 | 2011-03-15 | Argo-Tech Corporation | Variable displacement pump having a rotating cam ring |
| JP2002339879A (en) * | 2001-05-15 | 2002-11-27 | Futsuko Kinzoku Kogyo Kk | Rotor for vane pump |
-
2003
- 2003-07-07 JP JP2005503393A patent/JPWO2005003562A1/en not_active Abandoned
- 2003-07-07 CN CNB03826322XA patent/CN100379990C/en not_active Expired - Fee Related
- 2003-07-07 WO PCT/JP2003/008619 patent/WO2005003562A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7566212B2 (en) | 2006-12-08 | 2009-07-28 | Matsushita Electric Works, Ltd. | Vane pump with blade base members |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2005003562A1 (en) | 2006-08-17 |
| WO2005003562A1 (en) | 2005-01-13 |
| CN100379990C (en) | 2008-04-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080409 Termination date: 20190707 |