WO2017013932A1 - ポンプ装置 - Google Patents
ポンプ装置 Download PDFInfo
- Publication number
- WO2017013932A1 WO2017013932A1 PCT/JP2016/064477 JP2016064477W WO2017013932A1 WO 2017013932 A1 WO2017013932 A1 WO 2017013932A1 JP 2016064477 W JP2016064477 W JP 2016064477W WO 2017013932 A1 WO2017013932 A1 WO 2017013932A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drive shaft
- pump
- pump element
- bearing
- housing
- Prior art date
Links
- 239000012530 fluid Substances 0.000 claims description 35
- 230000002093 peripheral effect Effects 0.000 claims description 27
- 238000004891 communication Methods 0.000 claims description 9
- 230000007423 decrease Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 14
- 238000003780 insertion Methods 0.000 description 13
- 230000037431 insertion Effects 0.000 description 13
- 239000000446 fuel Substances 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
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- 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
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
- F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
- F04C15/0065—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions for eccentric movement
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- 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
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
- F04C11/005—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of dissimilar working principle
-
- 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
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
-
- 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
- F04C14/223—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 using a movable cam
-
- 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
- F04C14/223—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 using a movable cam
- F04C14/226—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 using a movable cam by pivoting the cam around an eccentric axis
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- 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
-
- 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
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0034—Sealing arrangements in rotary-piston machines or pumps for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine
- F04C15/0038—Shaft sealings specially adapted for rotary-piston machines or pumps
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- 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
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
- F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
-
- 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
- F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
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- 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
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- 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
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- 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
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- 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
- F04C2/3441—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 one line or continuous surface substantially parallel to the axis of rotation
- F04C2/3442—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 one line or continuous surface substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
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- 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
- F04C2240/10—Stators
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- 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
- F04C2240/20—Rotors
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- 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
- F04C2240/30—Casings or housings
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- 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
- F04C2240/52—Bearings for assemblies with supports on both sides
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- 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
- F04C2240/60—Shafts
Definitions
- the present invention relates to a pump device in which a plurality of pumps are connected in series.
- Patent Document 1 As a conventional pump device, for example, the one described in Patent Document 1 below is known.
- the drive shaft of the first pump and the drive shaft of the second pump are connected with a predetermined joint structure, and the seal member is provided on the outer peripheral side of the drive shaft of the first pump. The inflow of fluid from the second pump side is suppressed.
- the present invention has been devised in view of the actual situation of the conventional pump device, and has a problem that the bending deformation of the drive shaft related to the pump element on one side reaches the drive shaft related to the pump element on the other side. It aims at providing the pump apparatus which can be suppressed.
- the present invention connects a first drive shaft for driving the first pump element and a second drive shaft for driving the second pump element via a third drive shaft,
- the shafts of the third drive shaft and the second drive shaft and the third drive shaft are connected by a first joint and a second joint that allow a change in the joint angle or eccentricity between the shafts.
- first drive shaft and the second drive shaft are connected via the third drive shaft, and the connection between the drive shafts (between the first and third drive shafts and between the second and third drive shafts) )
- first and second joints that allow changes in the joining angle or eccentricity, thereby suppressing the problem that the bending deformation on one side of the first and second drive shafts affects the other side. can do.
- the present invention connects a first drive shaft for driving the first pump element constituting the variable displacement vane pump and a second drive shaft for driving the second pump element via a joint,
- a bearing is provided between the joint and the second pump element, and a pair of seal members is provided between the bearing and the second pump element.
- the first pump element which is a so-called unbalanced pump, is likely to bend and deform.
- the influence of the first drive shaft on the seal member is affected. Can be suppressed.
- FIG. 2 is a cross-sectional view taken along line XX in FIG. It is a disassembled perspective view of the 2nd pump element shown in FIG. It is a longitudinal cross-sectional view of the pump apparatus which concerns on 2nd Embodiment of this invention. It is a longitudinal cross-sectional view of the pump apparatus which concerns on 3rd Embodiment of this invention. It is a longitudinal cross-sectional view of the pump apparatus which concerns on 4th Embodiment of this invention. It is a longitudinal cross-sectional view of the pump apparatus which concerns on 5th Embodiment of this invention.
- the present invention is applied to a pump device in which a variable displacement vane pump and a fuel pump, which are hydraulic pressure sources of an automobile power steering device, are integrally configured.
- a pump device in which a variable displacement vane pump and a fuel pump, which are hydraulic pressure sources of an automobile power steering device, are integrally configured.
- the left side (first pump element E1 side) in FIG. 1 is defined as the front
- the right side (second pump element E2 side) is defined as the rear.
- the radial direction orthogonal to the “axial direction” will be referred to as the “radial direction”.
- the pump device 1 includes a first pump element accommodating portion 11a, a second pump element accommodating portion 12a, , A first pump element E1 accommodated in the first pump element accommodating portion 11a, a first drive shaft 20 for driving the first pump element E1, and the second pump element
- the third drive shaft 50 is connected mainly to the drive shaft 40.
- the pump housing 10 is divided into three parts along the axial direction of the first to third drive shafts 20, 40, 50, and has a first pump element accommodating portion 11a that accommodates the first pump element E1 therein.
- the third pump housing 13 that houses the third drive shaft 50 is connected in series along the axial direction of the first to third drive shafts 20, 40, 50.
- the first pump housing 11 has a substantially bottomed cylindrical shape, is configured to surround the outer peripheral side of the first drive shaft 20, and has a cylindrical portion 11b that forms the first pump element accommodating portion 11a on the inner peripheral side. And a bottom portion 11c that is provided on one end side in the axial direction of the cylindrical portion 11b (on the side opposite to the second drive shaft 40) and that constitutes the front end wall of the first pump element accommodating portion 11a.
- a shaft insertion hole 14 through which the first drive shaft 20 is inserted is formed in the center portion of the bottom portion 11c along the axial direction, and a front end portion of the first drive shaft 20 facing the outside through the shaft insertion hole 14 is formed.
- a driving force is input from the engine by linking with an engine (not shown) via a gear (not shown).
- the shaft insertion hole 14 is formed in a stepped diameter increasing shape toward the front end side, and a bearing B3 accommodated and held in the large diameter portion 14a on the front end side and a bearing B4 accommodated and held in the small diameter portion 14b on the rear end side.
- the bearing B3 is constituted by a well-known ball bearing
- the bearing B4 is constituted by a well-known plain bearing
- the bearing B4 is lubricated by hydraulic fluid flowing out from the first pump element E1 side.
- the medium diameter portion 14c formed between the large diameter portion 14a and the small diameter portion 14b accommodates and holds a seal member S0, which is a known seal member, and the seal member S0 lubricates the bearing B4.
- the outside outflow of the hydraulic fluid that has flowed out from the first pump element E1 side is suppressed.
- the first pump element E1 includes an annular adapter ring 23 fitted on the peripheral wall of the first pump element accommodating portion 11a, and an inner peripheral side of the adapter ring 23.
- An annular cam ring 24 that is accommodated eccentrically with respect to an axis (rotation center of a rotor 21 to be described later) Q, and a first drive shaft that is rotatably accommodated on the inner peripheral side of the cam ring 24.
- a rotor 21 that is rotationally driven by 20 and a plurality of slots that are recessed along the radial direction on the outer periphery of the rotor 21 so as to be retractable.
- a rectangular plate-like vane 22 that separates a plurality of pump chambers Px is provided in a space formed between the cam ring 24 and the rotor 21 by sliding contact with the inner peripheral surface of 24.
- a pin 25a serving as a detent for the cam ring 24 is held in an arc-shaped groove formed in the upper end portion of the inner peripheral surface thereof, and the arc-shaped groove in FIG.
- a plate member 25b as a support portion for supporting the swinging of the cam ring 24 is held over substantially the entire axial width.
- a seal member is provided along the axial direction at a position substantially opposite to the plate member 25b in the radial direction, and the adapter ring 23 is formed by the seal member and the plate member 25b.
- the first fluid pressure chamber P ⁇ b> 1 and the second fluid pressure chamber P ⁇ b> 2 used for swing control of the cam ring 24 are separated between the cam ring 24 and the cam ring 24 in the radial direction.
- the cam ring 24 is supported on the plate member 25b and can swing to the first fluid pressure chamber P1 side or the second fluid pressure chamber P2 side so as to roll on the plate member 25b. Further, the cam ring 24 can be prevented from rotating by the engagement groove having a substantially semicircular cross section formed in the outer peripheral portion thereof being engaged with the pin 25a.
- the first pump element E1 includes a substantially disk-shaped pressure plate 26a and a side plate 26b disposed on the rear end side of the first pump element housing portion 11a and adjacent to the front end side of the third pump housing 13. And are held in a sandwiched state.
- a plurality of pump chambers Px are defined by a pair of adjacent vanes 22, 22, a pressure plate 26a, and a side plate 26b.
- the volume of each pump chamber Px is increased or decreased by swinging in the left-right direction, thereby changing the specific discharge amount.
- the second fluid pressure chamber P2 is provided with a coil spring 27 supported by a retainer screwed to a side portion of the first pump housing 11, and has a coil spring 27 to which a preload is applied by the retainer.
- the cam ring 24 is constantly urged in the direction in which the amount of eccentricity (hereinafter simply referred to as “the amount of eccentricity”) with respect to the first fluid pressure chamber P1 side, that is, the rotation center Q of the rotor 21, is maximized. Yes.
- the pressure plate 26a on the rear end side of the first pump element accommodating portion 11a is in a region where the internal volume of each pump chamber Px gradually expands as the rotor 21 rotates (hereinafter referred to as “suction region”).
- suction region a region where the internal volume of each pump chamber Px gradually expands as the rotor 21 rotates.
- suction region a region where the internal volume of each pump chamber Px gradually expands as the rotor 21 rotates
- suction region a substantially crescent-shaped intake port 28a represented by an imaginary line is cut out along the circumferential direction.
- the suction port 28a is connected to a suction passage 28b having a substantially L-shaped longitudinal section from the lower end portion of the third pump housing 13, so that the outside (reservoir tank not shown) is connected via the suction passage 28b.
- the working fluid introduced from the above is introduced into each pump chamber Px located in the suction region.
- discharge region a substantially crescent-shaped discharge port 29a indicated by an imaginary line in FIG. 2 extends along the circumferential direction. Notches are formed.
- the discharge port 29a is connected to a discharge passage 29b formed inside the first pump housing 11, so that the pressurized operation is performed in each pump chamber Px located in the discharge region via the discharge passage 29b.
- the liquid is discharged to the outside (power steering device PS).
- the discharge passage 29b is bifurcated on the downstream side, and a part of the discharge oil passes through the first discharge passage 29c, and a first pressure chamber, which will be described later, of the control valve 30. 33 and a part of the discharged oil is guided to the outside (power steering device PS) via the other second discharge passage 29d.
- Reference numeral 35 in the figure denotes a metering orifice that serves to generate a differential pressure for operating the control valve 30 with respect to the discharge pressure.
- the control valve 30 is slidably accommodated in a valve hole 31 formed in the lower end side of the first pump housing 11 so that the inside of the valve hole 31 is on the left side in FIG.
- the first pressure chamber 33 and the right second pressure chamber 34 are separated.
- the fluid pressure on the upstream side of the metering orifice 35 guided to the first pressure chamber 33 through the first discharge passage 29c is guided to the first pressure chamber 33, and the metering to the second pressure chamber 34 through the second discharge passage 29d.
- the hydraulic pressure downstream of the orifice 35 is guided through the pilot orifice 39.
- the low pressure which is the suction pressure
- the suction pressure is introduced into the first fluid pressure chamber P1 through the communication path 36, so that the cam ring 24 is coiled.
- the discharge pressure adjusted by the control valve 30 in the first fluid pressure chamber P1 that is, By introducing the pressure adjusted by the control valve 30 to the discharge pressure, the cam ring 24 is pressed by the biasing force based on the internal pressure of the first fluid pressure chamber P1, and the biasing force of the coil spring 27 is applied. It moves in the direction in which the amount of eccentricity decreases against this.
- a relief valve 37 is provided inside the valve body 32 so as to be disposed in the second pressure chamber 34 and discharge the hydraulic pressure in the second pressure chamber 34.
- the relief valve 37 is configured such that its downstream side communicates with the suction side through the communication passage 38, and when the hydraulic pressure in the second pressure chamber 34 reaches a predetermined level or more, that is, on the load side (the power steering device PS side).
- the pressure reaches a predetermined value or more, the pressure is released to generate a pressure difference in the pilot orifice 39, and the valve body 32 is moved to the right side in FIG. It has the function of.
- the second pump housing 12 has a substantially bottomed cylindrical shape divided into two along the axial direction of the second drive shaft 40, and the outer periphery of the second drive shaft 40.
- a substantially cylindrical pump body 15 constituting the second pump element accommodating portion 12a on the inner peripheral side, and a second pump element accommodating portion provided on the rear end side of the pump body 15.
- a cover member 16 constituting the rear end wall of 12a.
- a shaft insertion hole 15b through which the second drive shaft 40 is inserted is formed in the bottom portion 15a closing the front end side of the second pump element housing portion 12a along the axial direction.
- the shaft insertion hole 15b The front end portion of the second drive shaft 40 that faces the outside through the third drive shaft 50 is connected to the first drive shaft 20 via the third drive shaft 50.
- the driving force of the engine (not shown) is input from the first drive shaft 20 to the second drive shaft 40 via the third drive shaft 50.
- the cover member 16 has a substantially plate shape and is fastened to the third pump housing 13 together with the pump body 15 via a plurality of bolts T1.
- the second pump element E2 is provided on the outer peripheral side of the second drive shaft 40 so as to be rotatable integrally with the second drive shaft 40, and has a drive gear 41 having a plurality of teeth 41a on the outer periphery, and a second drive shaft.
- a driven gear 42 provided on the outer peripheral side of the driven shaft 43 arranged in parallel with the driven shaft 43 so as to be integrally rotatable with the driven shaft 43 and having a plurality of tooth portions 42a meshable with the drive gear 41 on the outer peripheral portion.
- the two gears 41 and 42 are housed in the second pump element housing portion 12a.
- the second drive shaft 40 has a front end recessed through the cover member 16 at the front end via a bearing B5 that is housed and held in the axially intermediate portion of the shaft insertion hole 15b of the pump body 15.
- the shafts are supported by bearings B6 accommodated in the bearing portions 16a.
- both the bearings B5 and B6 are constituted by well-known needle bearings, and are lubricated by fuel flowing out from the second pump element E2.
- the driven shaft 43 also has a front end side via a bearing B7 accommodated in the bottom portion 15a of the pump body 15 and a rear end side via a bearing B8 accommodated in the cover member 16 as in the second drive shaft 40. Are supported on each axis.
- a pair of suction ports 17a and discharge ports 18a communicating with the second pump element housing portion 12a are formed in the lower end portion of the pump body 15.
- the suction port 17a is provided on one side in the width direction of the pump body 15 and the discharge port 18a is provided on the other side in the width direction of the pump body 15, respectively.
- the discharge port 18a communicates with the other side of both gears 41 and 42 through the internal discharge passage 18b, while communicating with one side of both gears 41 and 42 through the suction passage 17b.
- the third pump housing 13 has a substantially cylindrical shape and is fastened to the first pump housing 11 via a plurality of bolts T ⁇ b> 2 that pass through a flange portion 13 a provided on the outer peripheral portion on the front end side. ing.
- a shaft insertion hole 19 through which the first to third drive shafts 20, 40, 50 are inserted is formed at substantially the center of the third pump housing 13 along the axial direction.
- a bearing portion 19a used for the bearing of the first drive shaft 20 is formed at the front end portion of the shaft insertion hole 19, and the rear end portion of the first drive shaft 20 is supported by the bearing B9 accommodated and held in the bearing portion 19a. Is supported.
- the bearing B9 is constituted by a known plain bearing, and is lubricated by the hydraulic fluid flowing out from the first pump element E1 side.
- a bearing portion 19b that serves as a bearing for the third drive shaft 50 is formed with a larger diameter, and the bearing B0 accommodated and held in the bearing portion 19b allows the third drive shaft 50 to move.
- the rear end is pivotally supported.
- the bearing B0 is a well-known ball bearing and is lubricated by fuel flowing out from the second pump element E2.
- the third drive shaft 50 is connected to the first drive shaft 20 via the first joint 51 and is connected to the second drive shaft 40 via the second joint 52.
- the first joint 51 and the second joint 52 are constituted by Oldham joints that allow a change in the amount of eccentricity between the drive shafts 20, 40, 50.
- both of them are cylindrical and are provided on one end side in the axial direction as first recesses that engage with the two-surface width portions 20a and 40a that are the protrusions of the first drive shaft 20 and the second drive shaft 40.
- First engagement grooves 51a and 52a, and second engagement as second recesses provided on the other end side and engaged by two-surface width portions 50a and 50d as projections described later of the third drive shaft 50.
- a change in the amount of eccentricity between the first and second drive shafts 20 and 40 and the third drive shaft 50 is allowed.
- the first and second joints 51 and 52 are not limited to those that allow a change in the amount of eccentricity between the drive shafts 20, 40, and 50, and the drive shafts 20, 40, and 50 are not limited. A change in the joining angle between them may be allowed. And as a joint which accept
- the third drive shaft 50 interposed between the first and second drive shafts 20 and 40 connected via the first and second joints 51 and 52 is formed in a flat shape at the front end, and the first joint 51, a first double-sided width portion 50a provided for connection to the shaft 51, a seal portion 50b provided for a later-described seal provided in an axially intermediate portion, and a diameter-expanded rear end side of the seal portion 50b. It has a bearing portion 50c that is supported by B0, and a second two-surface width portion 50d that is formed in a flat shape at the rear end portion and serves for connection to the second joint 52.
- the first two-surface width portion 50a is engaged and connected to the second engagement groove 51b of the first joint 51 from the front end side, and the second two-surface width portion 50d is connected from the rear end side.
- the second joint 52 is engaged and connected to the second engagement groove 52b.
- first seal member S1 and second seal member S2 for sealing between the third drive shaft 50 and the shaft insertion hole 19 are fitted on the outer periphery of the seal portion 50b of the third drive shaft 50. It is worn. That is, the first and second seal members S1 and S2 are disposed between the first joint 51 and the second joint 52 and between the first joint 51 and the bearing B0. Inflow of hydraulic fluid flowing out from the first pump element E1 side to the second pump element E2 side is suppressed, and fuel flowing out from the second pump element E2 side to the first pump element E1 side by the second seal member S2 Inflow is suppressed.
- a communication passage 53 that opens to a space portion R defined between the first and second seal members S 1 and S 2 and communicates the space portion R with the outside. However, it is formed penetrating along the radial direction downward in the vertical direction.
- the communication path 53 is open to the atmosphere, so that the pressure between the first and second seal members S1 and S2 can be adjusted, and flows out from the one pump element E1 and E2 side, thereby the seal members S1 and S2.
- the first pump element constitutes a non-equilibrium type pump element
- a biased internal pressure is generated by the pumping action of the non-equilibrium type pump element.
- the first drive shaft to be driven is bent and deformed from the high pressure (discharge pressure) side to the low pressure (suction pressure) side. Then, as a result of the eccentric deformation of the first drive shaft due to the bending deformation, a gap (radial gap) is generated between the first drive shaft and the seal member fitted to the first drive shaft.
- the fluid related to the pump element may flow (mix) from one pump element side to the other pump element side.
- the first drive shaft 20 and the second drive shaft 40 are connected via the third drive shaft 50, and the drive shafts (first, Since the first and second joints 51 and 52 permitting a change in the joint angle or the eccentricity between the third drive shafts 20 and 50 and between the second and third drive shafts 40 and 50 are connected, the first Even if the second drive shafts 20 and 40 are bent and deformed, the deformation can be absorbed by the first and second joints 51 and 52. A problem that the bending deformation affects the other side can be suppressed.
- the first pump element E1 constitutes a pump element of a variable displacement pump that is a so-called unbalanced type
- the first drive shaft 20 is likely to bend and deform.
- a merit which can suppress more effectively the influence on the other side of the bending deformation of the one side of the 1st, 2nd drive shafts 20 and 40.
- the discharge port 29a related to the first pump element E1 is positioned above the suction port 28a in the vehicle mounted state, the first drive is performed by gravity. A part of the upward bending deformation of the shaft 20 is suppressed (cancelled), and there is an advantage that leakage of the hydraulic fluid due to the follow-up delay of the seal member S0 based on the bending deformation can be suppressed.
- the third drive shaft 50 is supported by the third pump housing 13 by the bearing B0, the supportability of the third drive shaft 50 is improved and the third drive shaft 50 is stabilized. As a result of the support, the influence on the other side of the bending deformation on one side of the first and second drive shafts 20 and 40 can be more effectively suppressed.
- engagement grooves as first recesses with which the end portions (the two-surface width portions 20a and 40a) of the first and second drive shafts 20 and 40 are engaged, respectively.
- 51a and 52a are provided
- engagement grooves 51b and 52b are provided as second recesses with which the end portions (first and second two-surface width portions 50a and 50d) of the third drive shaft 50 are engaged. Since the drive shafts 20, 40, 50 can be directly eccentric with respect to the second joints 51, 52, the axial lengths (total length) of the drive shafts 20, 40, 50 can be shortened. Is also provided.
- FIG. 4 shows a pump device according to a second embodiment of the present invention, in which the third drive shaft 50 according to the first embodiment is supported by a pair of bearings. Since the basic configuration is the same as that of the first embodiment, the same configuration is denoted by the same reference numeral as that of the first embodiment, and detailed description thereof is omitted (the following embodiments). Same about.)
- both end portions of the seal portion 50b of the third drive shaft 50 are pivotally supported by the first bearing B1 and the second bearing B2 that are the pair of bearings, and the The pair of first and second seal members S1 and S2 are disposed between the first and second bearings B1 and B2.
- the first and second bearings B1 and B2 are both known ball bearings, and an inner ring fitted on the outer peripheral surface of the third drive shaft 50 and an inner periphery of the shaft insertion hole 19 of the third pump housing 13.
- the first bearing B1 includes the inner ring that is press-fitted into the outer peripheral surface of the third drive shaft 50 from the front end side of the third drive shaft 50 and the second bearing B1.
- the bearing B ⁇ b> 2 is configured such that the outer ring is press-fitted into the inner peripheral surface of the shaft insertion hole 19 from the rear end side of the third drive shaft 50.
- the third drive shaft 50 is configured to be supported by a pair of bearings including the first and second bearings B1 and B2. As a result of being able to suppress the tilting of 50, the influence on the other side of the bending deformation on one side of the first and second drive shafts 20 and 40 can be more effectively suppressed.
- the supportability of the third drive shaft 50 can be improved and the assembly of the pump device can be achieved. It is also used to improve the performance.
- the first bearing B1 is press-fitted from the front end side of the third drive shaft 50, and the second bearing B2 is pressed from the rear end side of the third drive shaft 50. Since it is configured to be press-fitted, the assemblability of each of the bearings B1 and B2 becomes better than when both the bearings B1 and B2 are assembled from one side, and the assemblability of the pump device can be improved.
- a first seal member S1 is provided between the first bearing B1 and the second bearing B2, and a second seal is provided between the first seal member S1 and the second bearing.
- each pump element is supplied by the hydraulic fluid and fuel according to the first and second pump elements E1 and E2.
- the bearings B1 and B2 on the E1 and E2 sides can be lubricated.
- the space R defined between the first and second seal members S1 and S2 is opened to the atmosphere by the communication path 53, so that the pair of seal members S1 , S2 can also be adjusted.
- FIG. 5 shows a pump device according to a third embodiment of the present invention, in which the first joint 51 according to the second embodiment is abolished and replaced with another connection structure.
- the female spline 20x is recessed at the rear end portion of the first drive shaft 20, and the male spline 50x is formed at the front end portion of the third drive shaft 50.
- the drive shafts 20 and 50 are connected by spline coupling that can move in the axial direction.
- connection structure of the drive shafts 20 and 50 is not limited to the above spline coupling, and for example, hexagonal concave / convex (male / female) fitting may be employed.
- FIG. 6 shows a fourth embodiment of the pump device according to the present invention.
- the pump device 4 according to the present embodiment is a second bearing B2 made of a ball bearing according to the third embodiment.
- the bearing B2x is replaced.
- FIG. 7 shows a pump device according to a fifth embodiment of the present invention, in which the second drive shaft 40 and the third drive shaft 50 in the third embodiment are integrated, and the second bearing B2 is eliminated. .
- the front end portion of the second drive shaft 40 is extended so as to face the shaft insertion hole 19 of the third pump housing 13.
- the front end portion is configured as a seal portion 40b.
- the pair of first and second seal members S1 and S2 are fitted on the outer periphery of the seal portion 40b, and the front end portion of the seal portion 40b is pivotally supported by a bearing B0 which is a well-known ball bearing.
- the bearing B0 can be lubricated by the hydraulic fluid that has flowed out from the first pump element E1 side, as in the third embodiment.
- the first pump element E1 which is a so-called unbalanced pump, is likely to bend and deform in the first drive shaft 20, but the bearing B0 and the bearing B0 on the second drive shaft 40 side.
- the pair of seal members S1 and S2 it is possible to suppress the influence of the bending deformation of the first drive shaft 20 on the seal members S1 and S2.
- the joint related to the connection of the third drive shaft 50 (the first and second joints 51). , 52)
- the axial length of the pump device 5 can be shortened, and the number of components of the pump device 5 can be reduced, thereby improving the productivity and reducing the manufacturing cost.
- the present invention is not limited to the configuration exemplified in each of the above-described embodiments, and can be freely changed according to the specification of the application target and the like as long as it can achieve the effects of the present invention.
- variable displacement type vane pump element is applied to the first pump element E1 and the fixed displacement type external gear pump element is applied to the second pump element E2.
- the pump device according to the invention is not limited to both types of pump elements, and it goes without saying that all pump elements driven by the first and second drive shafts 20 and 40 are included.
- a pump housing having a first pump element accommodating portion and a second pump element accommodating portion therein, and a pump housing provided in the first pump element accommodating portion, A first pump element that discharges, a second pump element that is provided in the second pump element housing portion and sucks and discharges hydraulic fluid, and is pivotally supported by the pump housing, and rotationally drives the first pump element
- a first drive shaft that is pivotally supported by the pump housing and rotationally drives the second pump element, and is pivotally supported by the pump housing and the first drive shaft in the axial direction of the first drive shaft.
- a third drive shaft provided between the first drive shaft and the second drive shaft and transmitting a rotational force between the first drive shaft and the second drive shaft; the first drive shaft; 3 drive shafts And a rotational force is transmitted between the first drive shaft and the third drive shaft, and a change in a joint angle or an eccentric amount between the first drive shaft and the third drive shaft is provided.
- a first joint that permits rotation, a rotational force is transmitted between the second drive shaft and the third drive shaft, and the second drive shaft and the third drive shaft.
- a second joint that allows a change in a joint angle or an eccentric amount between the second drive shaft and the third drive shaft.
- a bearing that pivotally supports the third drive shaft is provided.
- the bearing in any one of the aspects of the pump device, includes a first bearing provided on the first drive shaft side in the axial direction of the third drive shaft, and more than the first bearing. And a second bearing provided on the second drive shaft side.
- a first seal member is provided between the first bearing and the second bearing in the axial direction of the third drive shaft, A second seal member is provided between the first seal member and the second bearing.
- the pump housing has one end opened to a space between the pump housing and the third drive shaft, and the other end opened to the outside.
- a communication path is provided, and one end side of the communication path is formed between the first seal member and the second seal member in the axial direction of the third drive shaft.
- the first bearing includes a first inner ring, a first outer ring, and a plurality of balls interposed between the inner and outer rings.
- the second bearing is a ball bearing having a second inner ring, a second outer ring, and a plurality of balls interposed between the inner and outer rings.
- the second outer ring is press-fitted and fixed to the inner peripheral surface of the housing while the second outer ring is press-fitted into the outer peripheral surface of the third drive shaft.
- the first pump element is housed in the first pump element housing portion and is driven to rotate by the first drive shaft
- the rotor A plurality of vanes respectively housed in a plurality of slots formed in a notch, and disposed in the first pump element housing portion so as to be eccentrically movable with respect to an axis of the first drive shaft, and the rotor and the An annular cam ring that forms a plurality of pump chambers together with a plurality of vanes, and the cam ring is formed to be opposed to both sides with the cam ring interposed between the first pump element housing portion and the cam ring.
- the driving is controlled by a control means for controlling the internal pressures of the fluid pressure chamber and the second fluid pressure chamber.
- the pump housing is formed on an outer peripheral side of the first drive shaft, and includes a cylindrical portion that houses the first pump element, and the cylindrical shape.
- a first pump housing having a bottom portion provided at an end opposite to the second drive shaft in the axial direction, and the second drive shaft side in the axial direction of the tubular portion,
- a third pump housing that houses the third drive shaft, and the third drive shaft is pivotally supported by a pair of bearings provided in the third pump housing.
- one of the pair of bearings is inserted from one end side of the third pump housing, and the other is The third pump housing is inserted from the other end side.
- a discharge port that opens in a region where the volume of each pump chamber decreases as the rotor rotates in a state where the pump apparatus is mounted on a vehicle. It is provided so as to be positioned above the suction port that opens in a region where the volume of each pump chamber increases with rotation.
- the first joint includes a convex portion provided on one side of an end portion of the first drive shaft and an end portion of the third drive shaft.
- a first recess that engages, and a second recess that engages with a protrusion provided on the other side of the ends of the two drive shafts, and the second joint is an end of the second drive shaft.
- a pump housing having a first pump element accommodating portion and a second pump element accommodating portion therein, and the first pump element accommodating portion are provided and operated.
- a first pump element that sucks and discharges fluid; a second pump element that is provided in the second pump element housing portion and sucks and discharges hydraulic fluid; and is pivotally supported by the pump housing;
- a joint for transmitting a rotational force between the first drive shaft and the second drive shaft and allowing a change in a joint angle or an eccentric amount between the first drive shaft and the second drive shaft.
- the second A bearing provided between the joint and the second pump element in an axial direction of the dynamic shaft, and supporting the second drive shaft; and in the axial direction of the second drive shaft, the bearing and the second pump A pair of seal members provided between the rotor and the first pump element housed in the first pump element housing portion and driven to rotate by the first drive shaft;
- a plurality of vanes respectively housed in a plurality of slots formed in a notch in the rotor, and disposed in the first pump element housing portion so as to be eccentrically movable with respect to the axis of the first drive shaft;
- An annular cam ring that forms a plurality of pump chambers together with the plurality of vanes.
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Abstract
Description
図1~図3は、本発明に係るポンプ装置の第1実施形態を示し、このポンプ装置1は、図1に示すように、第1ポンプ要素収容部11aと第2ポンプ要素収容部12aとを内部に有するポンプハウジング10と、前記第1ポンプ要素収容部11a内に収容された第1ポンプ要素E1と、該第1ポンプ要素E1を駆動する第1駆動軸20と、前記第2ポンプ要素収容部12a内に収容された第2ポンプ要素E2と、該第2ポンプ要素E2を駆動する第2駆動軸40と、前記ポンプハウジング10内に収容され、前記第1駆動軸20と前記第2駆動軸40とを接続する第3駆動軸50と、から主として構成されている。
図4は、本発明に係るポンプ装置の第2実施形態を示し、前記第1実施形態に係る第3駆動軸50を1対の軸受で軸支する構成としたものである。なお、基本的な構成については前記第1実施形態と同様であるから、該同様の構成については前記第1実施形態と同一の符号を付すことにより、詳細な説明は省略する(以下の実施形態について同じ。)。
図5は、本発明に係るポンプ装置の第3実施形態を示し、前記第2実施形態に係る第1継手51を廃止し、他の接続構造に置換したものである。
図6は、本発明に係るポンプ装置の第4実施形態を示し、本実施形態に係るポンプ装置4は、前記第3実施形態に係るボールベアリングからなる第2軸受B2をプレーンベアリングからなる第2軸受B2xに置換して構成したものである。
図7は、本発明に係るポンプ装置の第5実施形態を示し、前記第3実施形態における第2駆動軸40と第3駆動軸50とを一体化し、第2軸受B2を廃止したものである。
Claims (12)
- 内部に第1ポンプ要素収容部及び第2ポンプ要素収容部を有するポンプハウジングと、
前記第1ポンプ要素収容部内に設けられ、作動液の吸入及び吐出を行う第1ポンプ要素と、
前記第2ポンプ要素収容部内に設けられ、作動液の吸入及び吐出を行う第2ポンプ要素と、
前記ポンプハウジングに軸支され、前記第1ポンプ要素を回転駆動する第1駆動軸と、
前記ポンプハウジングに軸支され、前記第2ポンプ要素を回転駆動する第2駆動軸と、
前記ポンプハウジングに軸支され、かつ前記第1駆動軸の軸線方向において前記第1駆動軸と前記第2駆動軸との間に設けられ、前記第1駆動軸と前記第2駆動軸との間で回転力を伝達する第3駆動軸と、
前記第1駆動軸と前記第3駆動軸との間に設けられ、前記第1駆動軸と前記第3駆動軸との間で回転力を伝達すると共に、前記第1駆動軸と前記第3駆動軸との間の接合角度又は偏心量の変化を許容する第1継手と、
前記第2駆動軸と前記第3駆動軸との間に設けられ、前記第2駆動軸と前記第3駆動軸との間で回転力を伝達すると共に、前記第2駆動軸と前記第3駆動軸との間の接合角度又は偏心量の変化を許容する第2継手と、
を有することを特徴とするポンプ装置。 - 前記第3駆動軸を軸支する軸受が設けられていることを特徴とする請求項1に記載のポンプ装置。
- 前記軸受は、前記第3駆動軸の軸線方向において前記第1駆動軸側に設けられた第1軸受と、該第1軸受よりも前記第2駆動軸側に設けられた第2軸受と、から構成されることを特徴とする請求項2に記載のポンプ装置。
- 前記第3駆動軸の軸線方向において、前記第1軸受と前記第2軸受との間に第1シール部材が設けられると共に、該第1シール部材と前記第2軸受との間に第2シール部材が設けられていることを特徴とする請求項3に記載のポンプ装置。
- 前記ポンプハウジングには、一端側が該ポンプハウジングと前記第3駆動軸との間の空間に開口すると共に他端側が外部へと開口する連通路が設けられ、
前記連通路の一端側は、前記第3駆動軸の軸線方向における前記第1シール部材と前記第2シール部材との間に開口形成されることを特徴とする請求項4に記載のポンプ装置。 - 前記第1軸受は、第1内輪と第1外輪と該両内外輪の間に介装された複数のボールとを有するボールベアリングであって、
前記第2軸受は、第2内輪と第2外輪と該両内外輪の間に介装された複数のボールとを有するボールベアリングであって、
前記第1内輪は、内周側が前記第3駆動軸の外周面に圧入される一方、
前記第2外輪は、外周側が前記ハウジングの内周面に圧入固定されることを特徴とする請求項3に記載のポンプ装置。 - 前記第1ポンプ要素は、
前記第1ポンプ要素収容部内に収容され、前記第1駆動軸によって回転駆動されるロータと、
前記ロータに切欠形成される複数のスロットにそれぞれ出没自在に収容された複数のベーンと、
前記第1ポンプ要素収容部内において前記第1駆動軸の軸心に対し偏心移動可能に配置され、前記ロータと前記複数のベーンと共に複数のポンプ室を形成する環状のカムリングと、
を備え、
前記カムリングは、前記第1ポンプ要素収容部と前記カムリングとの間に該カムリングを挟んで両側に対向形成される第1流体圧室及び第2流体圧室の各内圧を制御する制御手段によって駆動制御されることを特徴とする請求項1に記載のポンプ装置。 - 前記ポンプハウジングは、
前記第1駆動軸の外周側に形成され、前記第1ポンプ要素を収容する筒状部と、該筒状部のうち前記第2駆動軸とは軸線方向反対側の端部に設けられた底部と、を有する第1ポンプハウジングと、
前記筒状部の軸線方向における前記第2駆動軸側に配置され、前記第3駆動軸を収容する第3ポンプハウジングと、
を備え、
前記第3駆動軸は、前記第3ポンプハウジング内に設けられた1対の軸受によって軸支されていることを特徴とする請求項7に記載のポンプ装置。 - 前記第3駆動軸の軸線方向において、前記1対の軸受のうち一方は前記第3ポンプハウジングの一端側から挿入され、他方は前記第3ポンプハウジングの他端側から挿入されることを特徴とする請求項8に記載のポンプ装置。
- 車両への搭載状態において、前記ロータの回転に伴い前記各ポンプ室の容積が減少する領域に開口する吐出口が、前記ロータの回転に伴い前記各ポンプ室の容積が増大する領域に開口する吸入口よりも鉛直方向上側に位置するように設けられることを特徴とする請求項7に記載のポンプ装置。
- 前記第1継手は、前記第1駆動軸の端部と前記第3駆動軸の端部の一方側に設けられた凸部が係合する第1凹部と、前記両駆動軸の端部の他方側に設けられた凸部が係合する第2凹部と、を有し、
前記第2継手は、前記第2駆動軸の端部と前記第3駆動軸の端部の一方側に設けられた凸部が係合する第1凹部と、前記両駆動軸の端部の他方側に設けられた凸部が係合する第2凹部と、を有することを特徴とする請求項1に記載のポンプ装置。 - 内部に第1ポンプ要素収容部及び第2ポンプ要素収容部を有するポンプハウジングと、
前記第1ポンプ要素収容部内に設けられ、作動液の吸入及び吐出を行う第1ポンプ要素と、
前記第2ポンプ要素収容部内に設けられ、作動液の吸入及び吐出を行う第2ポンプ要素と、
前記ポンプハウジングに軸支され、前記第1ポンプ要素を回転駆動する第1駆動軸と、
前記ポンプハウジングに軸支され、前記第2ポンプ要素を回転駆動する第2駆動軸と、
前記第1駆動軸と前記第2駆動軸との間に設けられ、前記第1駆動軸と前記第2駆動軸との間で回転力を伝達すると共に、前記第1駆動軸と前記第2駆動軸との間の接合角度又は偏心量の変化を許容する継手と、
前記第2駆動軸の軸線方向において前記継手と前記第2ポンプ要素との間に設けられ、前記第2駆動軸を軸支する軸受と、
前記第2駆動軸の軸線方向において、前記軸受と前記第2ポンプ要素との間に設けられた1対のシール部材と、
を備え、
前記第1ポンプ要素は、
前記第1ポンプ要素収容部内に収容され、前記第1駆動軸によって回転駆動されるロータと、
前記ロータに切欠形成される複数のスロットにそれぞれ出没自在に収容された複数のベーンと、
前記第1ポンプ要素収容部内において前記第1駆動軸の軸心に対し偏心移動可能に配置され、前記ロータと前記複数のベーンと共に複数のポンプ室を形成する環状のカムリングと、
を備えることを特徴とするポンプ装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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US15/739,367 US20180180043A1 (en) | 2015-07-21 | 2016-05-16 | Pump device |
JP2017529484A JPWO2017013932A1 (ja) | 2015-07-21 | 2016-05-16 | ポンプ装置 |
DE112016003278.1T DE112016003278T5 (de) | 2015-07-21 | 2016-05-16 | Pumpvorrichtung |
CN201680036756.9A CN107709781B (zh) | 2015-07-21 | 2016-05-16 | 泵装置 |
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JP2015-143569 | 2015-07-21 | ||
JP2015143569 | 2015-07-21 |
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WO2017013932A1 true WO2017013932A1 (ja) | 2017-01-26 |
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PCT/JP2016/064477 WO2017013932A1 (ja) | 2015-07-21 | 2016-05-16 | ポンプ装置 |
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US (1) | US20180180043A1 (ja) |
JP (1) | JPWO2017013932A1 (ja) |
CN (1) | CN107709781B (ja) |
DE (1) | DE112016003278T5 (ja) |
WO (1) | WO2017013932A1 (ja) |
Cited By (1)
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WO2022176545A1 (ja) * | 2021-02-16 | 2022-08-25 | 日立Astemo株式会社 | タンデム型オイルポンプ |
Families Citing this family (2)
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CN108775504A (zh) * | 2018-08-30 | 2018-11-09 | 湖南机油泵股份有限公司 | 一种能降低磨损的变排量机油泵 |
DE102020215198A1 (de) | 2020-12-02 | 2022-06-02 | Robert Bosch Gesellschaft mit beschränkter Haftung | Mehrfachpumpe mit Fluidkanal zur Entlastung eines Dichtrings |
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JPS594558B2 (ja) * | 1974-06-19 | 1984-01-30 | ネツチユ−モ−ノプンペン ゲゼルシヤフト ミツト ペシユレンクテル ハフツング | ヘンシンウオ−ムポンプヨウ タワミツギテ |
JPH11241689A (ja) * | 1998-02-26 | 1999-09-07 | Trinity Ind Corp | ポンプ装置及びその構成部品 |
US20030180163A1 (en) * | 2002-02-27 | 2003-09-25 | Markus Hartmann | Motor/pump assembly for use in a braking device |
JP2005330969A (ja) * | 2004-05-17 | 2005-12-02 | Viking Pump Inc | ポンプマウントへの迅速連結ポンプおよび駆動装置 |
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CN2204871Y (zh) * | 1994-09-21 | 1995-08-09 | 潘恒昌 | 一体式浮动联轴型双轴油泵 |
-
2016
- 2016-05-16 JP JP2017529484A patent/JPWO2017013932A1/ja not_active Ceased
- 2016-05-16 DE DE112016003278.1T patent/DE112016003278T5/de not_active Withdrawn
- 2016-05-16 US US15/739,367 patent/US20180180043A1/en not_active Abandoned
- 2016-05-16 WO PCT/JP2016/064477 patent/WO2017013932A1/ja active Application Filing
- 2016-05-16 CN CN201680036756.9A patent/CN107709781B/zh not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS594558B2 (ja) * | 1974-06-19 | 1984-01-30 | ネツチユ−モ−ノプンペン ゲゼルシヤフト ミツト ペシユレンクテル ハフツング | ヘンシンウオ−ムポンプヨウ タワミツギテ |
JPH11241689A (ja) * | 1998-02-26 | 1999-09-07 | Trinity Ind Corp | ポンプ装置及びその構成部品 |
US20030180163A1 (en) * | 2002-02-27 | 2003-09-25 | Markus Hartmann | Motor/pump assembly for use in a braking device |
JP2005330969A (ja) * | 2004-05-17 | 2005-12-02 | Viking Pump Inc | ポンプマウントへの迅速連結ポンプおよび駆動装置 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022176545A1 (ja) * | 2021-02-16 | 2022-08-25 | 日立Astemo株式会社 | タンデム型オイルポンプ |
JP2022124700A (ja) * | 2021-02-16 | 2022-08-26 | 日立Astemo株式会社 | タンデム型オイルポンプ |
JP7554133B2 (ja) | 2021-02-16 | 2024-09-19 | 日立Astemo株式会社 | タンデム型オイルポンプ |
Also Published As
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DE112016003278T5 (de) | 2018-04-12 |
US20180180043A1 (en) | 2018-06-28 |
JPWO2017013932A1 (ja) | 2018-04-26 |
CN107709781A (zh) | 2018-02-16 |
CN107709781B (zh) | 2018-12-28 |
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