WO1994003726A1 - Appareil produisant une pression fluidique - Google Patents
Appareil produisant une pression fluidique Download PDFInfo
- Publication number
- WO1994003726A1 WO1994003726A1 PCT/JP1993/001083 JP9301083W WO9403726A1 WO 1994003726 A1 WO1994003726 A1 WO 1994003726A1 JP 9301083 W JP9301083 W JP 9301083W WO 9403726 A1 WO9403726 A1 WO 9403726A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cylinder block
- piston
- main shaft
- fluid pressure
- cylinder
- 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.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
- F04B23/08—Combinations of two or more pumps the pumps being of different types
- F04B23/10—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type
- F04B23/106—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type being an axial piston pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/2007—Arrangements for pressing the cylinder barrel against the valve plate, e.g. by fluid pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/2014—Details or component parts
- F04B1/2064—Housings
- F04B1/2071—Bearings for cylinder barrels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
Definitions
- the present invention relates to a fluid pressure generating device, and more particularly to a fluid pressure generating device including a motor and a liquid pump driven by the motor in one casing.
- a fluid pressure generating device including an electric motor and a liquid pump driven by the electric motor separately forms the liquid pump (hereinafter referred to as “pump”) and the electric motor (hereinafter referred to as “motor”) for driving the pump.
- the output shaft is connected to the input shaft of the pump via a shaft coupling, and the driving force of the motor is transmitted to the pump (Japanese Utility Model Application Laid-Open No. 61-11692).
- the motor 102 and the pump 103 are provided inside one casing 101 to reduce noise and reduce the size.
- a fluid pressure generating device that can be used has been proposed.
- the apparatus includes a rotor 104 formed by stacking steel plates of the motor 102 and a main shaft 130 fixed to the casing 101 and a pair of bearings 13. It is freely rotatable through 1.132.
- a plurality of holes 105 are provided in the rotor 104, and a sleeve 106 is fitted in these holes 105 to form a plurality of cylinders 107.
- 07 is equipped with biston 108 freely slidably.
- a cylinder port plate 111 having a kidney type port 110 is disposed on one axial side of the rotor 104.
- cylinder port plate 111 Of the cylinder port plate 111 and a seal material 112 between the fitting part of the cylinder port plate 111 and the outer periphery of the sleeve 106, and attach the cylinder port plate 111 to the cylinder port plate 111.
- the sleeve 106 and the rotor 104 have a degree of freedom so that they can move in the axial direction and the tilting direction.
- a valve plate 1 16 having a suction port (not shown) and a discharge port 1 15 is arranged outside the cylinder port plate 1 1 1.
- the cylinder port plate 111 is slidably contacted with the sliding surface of the fixed valve plate 116 so as to be relatively rotatable.
- a swash plate 1 2 2 having an inclined surface on which a shaft 1 2 1 holding the head of the piston 1 8 slides is disposed on the other side of the axis of the rotor 10 4 in the direction of ⁇ .
- a pressure plate 123 fitted to the sleeve 106 is provided on the other end of the sleeve 106 in the axial direction.
- One end face of the pressure plate 123 is in close contact with the end face of the rotor 104, and the spherical retainer 124 holding the shell 121 is attached to the spherical portion 124 at the tip of the pressure plate 123. 5 is fitted.
- each cylinder 107 The cylinder port plate 1 1 1 and each sleeve 1 0 6 move relative to each other in the axial direction due to pressure fluctuations inside the motor, and the rotation speed of the motor 10 2 also changes due to the load fluctuation of the pump 10 3. As a result, the cylinder port plate 1 11 and each sleeve 106 move relative to each other in the rotation direction.
- the sleeve 106 and the rotor 104 are pressed in a direction away from the cylinder port plate 111 by the internal pressure of each cylinder 107, and the right end of the rotor 104 in FIG.
- a radial pressing force acts on the side from the swash plate 122 via the shoe 122 and the piston 108, the rotor 104 tilts. This pressing force is caused by the pressing force of each piston 108 acting on the swash plate 122, and the reaction force of the radial component of the pressing force.
- a through hole is formed in each of the steel plates constituting the rotor 104. It is necessary to provide a sleeve 106 for sealing the cylinder 107, and both ends of the sleeve 106 are supported. A cylinder port plate 11 and a pressure plate 12 3 for forming 110 are required, which increases the number of parts and complicates assembly.
- An object of the present invention is to reduce noise and vibration and improve durability, It is an object of the present invention to provide a fluid pressure generator having a simple structure and good assemblability.
- a fluid pressure generating device includes a casing, a motor provided inside the casing and having a rotor having a fitting hole at the center, and a spindle at the center.
- a cylinder block provided with a plurality of cylinders on the outer periphery, a piston having a head on one side in each of the cylinders is slidably mounted, and a kidney type port is provided on a side opposite to the piston of the cylinder.
- a piston-acting body which is disposed to face each of the heads and has an inclined surface on which each of the heads or a shoe held by the head slides, and a piston-side end of the cylinder block opposite to the piston.
- a valve plate having a suction port and a discharge port communicating with the suction passage and the discharge passage.
- the cylinder block is fitted and fixed in a fitting hole of the rotor, and And supported on a stationary member including a pre-Symbol casing, in which the rotor was rotatably supported by the stationary member through the Shirindabu-locking and the main shaft.
- the cylinder block is formed separately from the rotor in the motor, the cylinder block is fitted and fixed in the fitting hole of the rotor, and the main shaft provided in the cylinder block is a stationary member. Since the rotor is supported, and the rotor is rotatably supported on the stationary member via the cylinder block and the main shaft, downsizing can be effectively performed, and assemblability can be improved. In addition, the need for the sleeve / cylinder port plate as in the conventional example is eliminated, noise and vibration are not generated by the relative movement between the two, the durability is improved, and the pump element configured based on the cylinder block is used. Can be optimized for the pump function, regardless of the configuration of the motor, and the motor can be optimized for its function.
- a bearing structure that supports the rotor and a bearing structure that supports the cylinder block can be used in common, so that the structure can be simplified and the accuracy can be improved, and the axial center of the rotor is supported by the block.
- the mouth Even if the magnetic attraction force acts overnight, the gap between the rotor and the stay does not change, so that the rotation stability of the rotor is improved and noise is reduced.
- the cylinder head and the main shaft are formed of a member, and the cylinder head and the main shaft are coupled to each other via a slide bearing so as to be relatively movable in the axial direction, and are held by the head of the biston.
- the main shaft has a retainer, and the main shaft has an engagement portion that engages with the retainer so as to be relatively rotatable, and the cylinder block is connected to the valve plate between the cylinder head and the main shaft. It is preferable to provide an elastic body for pressing the shoe against the inclined surface of the piston operating body via the spindle and the retainer.
- the pressing force for pressing the cylinder block against the valve plate and pressing the shoe against the inclined surface of the piston operating body can be made uniform.
- the durability can be improved as compared with a configuration in which a spring is installed in each cylinder and the cylinder block is pressed, and the cylinder block and the main shaft relatively move.
- the press structure can be formed to press the screw on the valve plate and the shoe on the piston working body, and the structure can be simplified.
- the cylinder block is pivotally supported by a main shaft of a member separate from the cylinder block, and a shaft supporting position for supporting the cylinder block is closer to a piston operating body side cylinder opening surface of the cylinder block than the cylinder block. It is preferable that, while being located on the piston operating body side, a cylindrical portion projecting toward the piston operating body from the opening end face be provided on the cylinder block, and the cylindrical portion be supported by the main shaft.
- the radial component of the force acting on the biston from the inclined surface as a reaction force of the pressing force that the biston presses on the inclined surface of the biston operating body via the shoe is, at the pivotal support position, a cylindrical portion. Is received via
- an end face of the cylinder block on the valve plate side protrudes outward from an opening end face of the fitting hole of the rotor.
- the portion of the cylinder block that protrudes from the fitting hole of the rotor can be made larger in diameter than the fitting hole, and the valve plate can be made larger in accordance with that, so that the sliding area of them can be reduced.
- the expansion prevents the cylinder block from tilting and prevents leakage.
- the cylinder block includes a piston stroke portion having a plurality of cylinders in which pistons are housed, and an extension portion extending in the axial direction with respect to each piston stroke portion and having a passage communicating with the cylinder, It is preferable that the cylinder hook is press-fitted and fixed to the fitting hole of the rotor only at the extension.
- the piston operating body is a swash plate having a trunnion shaft or a cradle-shaped swash plate, and the inclination angle thereof is variable.
- the size of the pump element can be controlled while the size can be reduced, and a small device capable of controlling the capacity can be provided.
- the cylinder block and the main shaft are fitted and fixed, the main shaft is rotatably supported by a stationary member, and the cylinder is held on the head of the biston.
- One is provided with a retainer, and the main shaft is provided with an engaging portion that is rotatably engaged with the retainer so as to be movable in the axial direction, and the cylinder block is provided with a plurality of pressing pins directed to the engaging portion.
- An elastic body which presses the cylinder block against the valve plate between the cylinder block and the pressing pin, and presses the pressing pin so that the shoe is pressed against the inclined surface of the piston operating body. Is preferably provided.
- the cylinder block and the main shaft are integrally formed, the main shaft is rotatably supported by a stationary member, and the cylinder block is connected to the valve plate between the cylinder block and the piston. It is preferable to provide an elastic body for pressing the head of the piston or the shoe held by the head against the inclined surface of the piston operating body.
- the main shaft is integrally formed with the cylinder block in this way, the number of parts can be reduced and the accuracy can be increased as compared with the case where the main shaft is combined as a separate member.
- main shaft and the cylinder block are fitted and fixed, the main shaft is rotatably supported by a stationary member, and at least one end in the axial direction of the main shaft is outside the outer surface of the casing. It is preferred to have a protruding shaft that protrudes.
- the protruding shaft can be used as a power take-out shaft, and the versatility is improved.
- the protruding shaft and the cooling fan are connected.
- the casing has a hermetic structure, and a fluid suction port that opens into the internal space of the casing is provided on one side in the axial direction of a motor provided in the casing, and one end side is provided on the other side. It is preferable to provide a suction passage which opens into the internal space of the casing and the other end side opens into a suction port of the valve plate.
- the motor and the pump can be cooled using the suction fluid.
- the casing has a hermetic structure, and the casing is provided with a suction passage and a discharge passage communicating with a suction boat and a discharge port of a valve plate, and one axial side of a motor provided in the casing.
- a fluid inlet and a fluid outlet which are open to the inner space of the casing and communicate with a fluid tank, and the fluid inlet is provided at the rotor and / or the cylinder block. It is preferable to provide a fluid sending means for generating a fluid flow from the fluid outlet to the fluid outlet.
- the motor and / or the cylinder block are formed with a fluid flow of a different system from the suction passage in the casing by the fluid feeding means, so that the motor can be cooled. Since the fluid is sucked into the cylinder from the suction passage of another system without sucking, the problem of sucking dust such as abrasion powder when cooling the motor can be eliminated. Further, when the piston actuating member is driven the motor be adjusted to the neutral position, it is possible to cool the said motor c In addition, it is preferable to mount a magnet in the casing.
- the magnet can adsorb foreign matter such as abrasion powder, and the performance and damage of the motor and the pump can be prevented from being reduced.
- FIG. 1 is a longitudinal sectional view showing a first embodiment of the fluid pressure generating device of the present invention.
- FIG. 2 is a longitudinal sectional view showing a second embodiment of the present invention.
- FIG. 3 is a cross-sectional view of the second embodiment of the present invention.
- FIG. 4 is a longitudinal sectional view showing a third embodiment of the present invention.
- FIG. 5 is a cross-sectional view of the third embodiment of the present invention.
- FIG. 6 is a longitudinal sectional view showing a fourth embodiment of the present invention.
- FIG. 7 is a longitudinal sectional view showing a fifth embodiment of the present invention.
- FIG. 8 is a longitudinal sectional view showing a sixth embodiment of the present invention.
- FIG. 9 is a longitudinal sectional view showing a seventh embodiment of the present invention.
- FIG. 10 is an end view taken along line AA of FIG.
- FIG. 11 is a longitudinal sectional view showing an eighth embodiment of the present invention.
- FIG. 12 is a longitudinal sectional view showing a conventional example.
- Example 1 shown in FIG. 1 is a basic structure of the device of the present invention, which is composed of a body casing la, a pair of lid plates lb, lc, and a force, and has an internal space of a casing 1 having a closed structure.
- a motor 4 including a stay 2 and a rotor 3 is provided inside Id.
- a fitting hole 3a is provided in the center of the rotor 3, and a cylinder block 5 described below is press-fitted into the fitting hole 3a, while being fitted into the center of the cylinder block 5.
- the provided main shaft 6 is supported on the cover plate 1 b. 1 c of the casing 1 via bearings 7 and 8 formed of, for example, needle bearings.
- the rotor 3 is connected to the casing via the cylinder block 5 and the main shaft 6. It is rotatably supported on the 1st. Further, on one side of the cylinder block 5 in the axial direction, a jeston operating body 9 having an inclined surface 9a is provided, and an arcuate suction port and a discharge port communicating with the suction passage and the discharge passage are provided on the other side. It has a valve plate 10 with a hole.
- the cover plate lb, lc of the casing 1 is provided with a bulging portion projecting into the internal space Id at the center thereof, and the bulging portion of the cover plate 1b is provided with the bearing 7 at the center thereof.
- the suction passage and the discharge passage are provided on both sides in the radial direction with the bearing 7 interposed therebetween.
- the valve plate 10 is attached to the inside of the bulging portion via a fixing pin 11.
- the bearing 8 is provided at the center of the bulging portion of the cover plate lc, and the biston operating body 9 is attached via the fixing screw 12.
- FIG. 1 only the suction passage is indicated by a dotted line, and reference numeral 13 is written. However, the discharge passage is formed similarly to the suction passage 13.
- the cylinder block 5 is made of a member separate from the main shaft 6, has a cylindrical shape having a shaft hole 14 in a center portion, and has a plurality of cylinders 15 provided in a thick portion thereof.
- a piston 16 having a spherical head 16a on one side is slidably fitted into each of the cylinders 15 and one side of each of the cylinders 15 is closed by the bistons 16.
- the other side, that is, the anti-biston side is open, and a kidney-shaped port 17 is formed on the open side, and faces the valve plate 10.
- the cross-sectional area of the kidney type port 17 is smaller than the cross-sectional area of the cylinder 15.
- the cylinder block 5 has a piston stroke portion 5a in which the piston 16 reciprocates, that is, a screw that forms the cylinder 15 and houses the piston 16 in a freely slidable manner. Ton stroke portion 5a and a through hole extending in the axial direction with respect to the piston stroke portion 5a and communicating with the cylinder 15
- the extension 18 is formed by an extension 5b having a passage 18 and the axial length thereof is substantially the same as the axial length of the rotor 3.
- the kidney shaped port 17 is provided on the opening side.
- the cylinder block 5 of the embodiment shown in FIG. 1 has a stopper having a larger diameter than the outer diameter of the cylinder block 5 on the outer periphery of the end opposite to the side of the extension 5.
- the outer diameter of the piston stroke portion 5a is made smaller than the outer diameter of the extension portion 5b, and the extension portion 5b is connected to the fitting hole 3a of the rotor 3 by press-fitting. ing.
- the piston stroke portion 5a is not directly affected by the press-fitting, there is an advantage that the press-fit distortion of the cylinder 15 can be reduced.
- the main shaft 6 formed separately from the cylinder block 5 is provided with slide bearings 20 and 21, and the cylinder block 5 and the main shaft 6 are connected to each other through the slide bearings 20 and 21.
- the sliding bearing 21 is connected to the cylinder opening end face 5c of the cylinder block 5 on the piston operating body side, that is, from the cylinder opening end face 5c on the side closed by the piston 16. While being positioned on the outer side, that is, on the piston working body side, the cylinder block 5 is provided with a cylindrical portion 5e that protrudes toward the piston working body side from the opening end face 5c.
- the cylinder block 5 since a kidney type port with a cross-sectional area smaller than that of the cylinder 15 is provided, the cylinder block 5 must be forcibly pressed against the valve plate 10 by the internal pressure of the cylinder 15. With the cylinder block 5 is prevented from tilting.
- the rotor 3 does not also tilt, the gap with the stator 2 becomes uniform, the rotational force and the magnetic attraction force are balanced, and the rotor 3 exists in the gap. Since the centering action by the liquid film is also balanced, the rotation of the rotor 3 and the cylinder block 5 becomes stable, noise and vibration can be reduced, and since the cylinder block 5 does not tilt, the valve plate 10 and the There is no gap and no leakage occurs on the sliding surface of, so the volumetric efficiency does not decrease1 and wear due to local contact also occurs.
- the head 16a of the piston 16 holds a shoe 22 having a sliding surface that slides on the inclined surface 9a of the piston operating body 9.
- Each of these shoes 22 is a retainer 2a. Supported by three.
- the engaged portion 24 having a spherical inner surface provided at the center of the retainer 23 is engaged with an annular engaging portion 25 having a spherical outer surface provided on the main shaft 6 so as to be relatively rotatable. I have.
- a large-diameter portion is provided on the extension portion 5b side, and an annular shape formed between the inner peripheral surface of the large-diameter portion and the outer peripheral surface of the main shaft 6.
- An elastic body 27 made of a coil spring is provided in the space 26, and one end of the elastic body 27 in the longitudinal direction is connected to the cylinder block 5 through a spring 28 and a retaining ring 29.
- the cylinder block 5 is fixed to the valve plate 10, the shoe 22 is fixed to the main shaft 6, and the other end is locked to the stepped portion of the main shaft 6 via a spring receiver 30.
- the cylinder block 5 is separated from the valve plate 10 by pressing against the inclined surface 9a of the piston operating body 9 via the joint 25 and the retainer 23, and the shroud 22 is attached to the inclined surface 9a.
- reference numeral 31 denotes an o-ring
- reference numeral 32 denotes a lead-out hole for leading a lead wire of the coil end 2a of the stay 2 near the lead-out hole 32.
- Reference numeral 33 denotes a hexagon socket plug provided in the cover plate lb
- reference numeral 34 denotes a storage space for the coil end 2a formed around a bulging portion of the cover plate lb, lc.
- a circular magnet 35 opposed to the coil end 2a is attached to the opposed inner surface 34a so that abrasion powder floating in the internal space 1d of the casing 1 is removed. The foreign matter is adsorbed to prevent the foreign matter from adhering to the coil end 2a.
- the main shaft 6 may be stationary at most. Due to the interposition of the bearings 7 and 8, the main shaft 6 rotates together with the cylinder block 5 in most cases.
- the cylinder block 5 and the rotor 3 are stably rotated without tilting because they are received by the bearing 21 located on the side. Therefore, no noise and vibration are generated. Further, the cylinder block 5 is fitted and fixed in the fitting hole 3 a of the rotor 3, and the rotor 3 is rotated by the bearing 7.8 provided in the casing 1 via the cylinder block 5 and the main shaft 6. Since the rotor 3 is supported as much as possible, the bearing of the rotor 3 can be shared with the bearing structure of the cylinder block 5, and the assembling work on the rotor 3 can be facilitated.
- the end face of the cylinder block 5 on the valve plate 10 side protrudes from the end face of the valve plate 10 side of the rotor 3 to fit the rotor 3 of the cylinder block 5 into the rotor 3.
- the diameter of the part protruding from the hole 3a to the valve plate 10 side is made larger than the diameter of the above-mentioned fitting hole 3a, the sliding contact surface of the cylinder block 5 with the valve plate 10 is changed. It is possible to increase the area of the screw plate 10 and increase the sliding area of the valve plate 10 to prevent the cylinder block 5 from tilting and to prevent leakage.
- the size of the valve plate 10 can be freely designed regardless of the size of the fitting hole 3a of the rotor 3, and the pump performance can be improved accordingly.
- the cylinder block 5 and the main shaft 6 are connected to each other via the slide bearings 20 and 21 so as to be relatively movable in the axial direction, the use of only one elastic body 27 makes The cylinder block 5 is pressed against the valve plate 10.
- the piston element 9 via the retainer 23 and the engaging portion 25 of the shoe 22 is 9.
- Can be pressed against the inclined surface 9a the pressing structure can be simplified, and the pressing can be made uniform.
- only one elastic body 27 is used, the structure is simpler, the spring fatigue can be reduced, and the durability can be improved as compared with the case where a spring is provided for each cylinder.
- FIGS. 2 to 11 the same reference numerals are used for the parts shown in the drawings.
- a piston is used instead of the piston operating body 9 fixed in FIG.
- the operating body is constituted by a swash plate 90 having a trunnion shaft 36, and the inclination angle of the inclined surface 90a of the swash plate 90 is made variable via the trunnion shaft 36. is there.
- the trunnion shaft 36 is rotatably supported on the cover plate lc as shown in FIG. 3 and a spring 37 for urging the swash plate 90 in the direction of the maximum inclination angle is provided on the back side of the slant 90.
- An operating plunger 38 of hydraulic control for adjusting the swash plate 90 toward the neutral position is provided.
- a piston operating body instead of the piston operating body 9 shown in FIG. 1, a piston operating body has an arc surface on the back surface, and an operation piece 39 is provided.
- the swash plate 91 is constituted by a cradle-shaped swash plate 91, and the inclination angle of the inclined surface 9la of the swash plate 91 is made variable around the arc surface.
- the operation piece 39 extends to the back of the swash plate 91, and a spring 40 for biasing the swash plate 91 in the maximum inclination angle direction is provided on one end of an extension thereof.
- a hydraulically-controlled operating plunger for adjusting the swash plate 91 toward the neutral position. 4 1 is provided.
- the axial center line 0 of the trunnion shaft 36 passes through the center of the main shaft 6, and the rotation center 0 of the grade type swash plate 91 is
- the swash plate 90, 91 is positioned at the axis of the main shaft 6 to improve the operability of adjusting the inclination angle by the operation plungers 38, 41 of the swash plates 90, 91.
- FIGS. 2 and 3 the piston side of the cylinder block 5 is projected outward from the end face of the rotor 3, but this is because the trunnion shaft 36 is provided outside the coil end 2a.
- the trunnion shaft 36 may be provided using a space inside the coil end 2a in the radial direction.
- reference numeral 42 denotes a discharge passage
- reference numerals 10a and 1Ob denote arc-shaped suction ports and discharge ports provided in the valve plate 10.
- the main shaft 6 is composed of a cylinder block 5 and a member, integrated by press-fitting, and rotatably supported on the casing 1 via bearings 7 and 8.
- An engaging portion 25 for rotatably engaging the retainer 23 is provided on the main shaft 6 so as to be movable in the axial direction, and a shaft hole of the cylinder block 5 is provided in the cylinder block 5.
- a plurality (for example, three) of pressing pins 43 are provided from an annular space 26 formed between the outer peripheral surface of the main shaft 6 and the engaging portion 25 through the cylinder block 5 toward the engaging portion 25.
- An elastic body 27 made of a coil spring is provided in the annular space 26 as in the first embodiment, and the cylinder block 5 is attached to the valve plate 10 via the elastic body 27 and the pressing pin 43. Further, the shoe 22 is connected to the piston operating body 9 via the pressing pin 43 and the retainer 23. Press on the inclined surface 9a and press the cylinder The brake plate 10 is prevented from coming off, and the shoe 22 is prevented from coming off the inclined surface 9a.
- the cylinder block 5 and the main shaft 6 are integrally formed.
- the left main shaft 51 and the right main shaft 52 are integrally formed so as to protrude from both axial end surfaces of the cylinder hook 5.
- the cylindrical hook 5 is pressed against the valve plate 10.
- the pressing of the shoe 22 against the inclined surface 9a is performed by mounting an elastic body 53 composed of a coil spring in each of the cylinders 15 and one end of the elastic body 53 into a step portion forming the above-mentioned kidney-shaped port 17.
- the cylinder block 5 is pressed against the valve plate 10 and the shoe 22 is pressed against the inclined surface 9a. I have.
- the main shaft 6 of the fourth embodiment shown in FIG. 6 projects outside the lid plate lc in the casing 1, and the projecting shaft 54 is connected to the power take-out shaft.
- a cooling fan 55 is connected to the protruding shaft 54.
- the cooling fan 55 can be connected, or an auxiliary pump (not shown) can be connected, so that the versatility can be expanded. Further, by connecting the cooling fan 55, the casing 1 can be blown and cooled.
- the protruding shaft 54 is not limited to the main shaft 6 shown in the fourth embodiment of FIG. 6, but may be provided on the right main shaft 52 of the fifth embodiment shown in FIG.
- the sliding bearings 20 and 21 of the first embodiment shown in FIG. 1 are used as a spline connection, and the protruding shaft 54 is provided on the main shaft 6 which is spline-connected to the cylinder block 5. Good.
- the motor 4 can be cooled by sucking fluid into the internal space Id of the casing 1 having a closed structure.
- a fluid inflow ⁇ 56 opening into the internal space Id is provided on one side in the axial direction of the motor 4 provided in the casing 1, that is, on the cover plate lc, and the inflow port 56 communicates with the fluid tank 57.
- the suction pipe 58 connected to the motor 4 the other end in the axial direction of the motor 4, that is, the cover plate lb, one end side is open to the internal space Id, and the other end side is the suction port 10 of the valve plate 10.
- a suction passage 59 opening to a is provided.
- the fluid in the fluid tank 57 is first sucked from the inflow port 56 to one side of the internal space Id. d from one side through the gap between the stay 2 and the rotor 3 and the gap between the core force 2b provided on the outer circumferential surface of the stay 2 and the inner circumferential surface of the body casing 1a.
- the fluid flows to the other side of the space 1d to cool the motor 4, and the fluid after the cooling of the motor is sucked into the cylinder 15 from the suction passage 59 through the suction boat 10a.
- a fluid flow groove 60 may be formed in the body casing la.
- the eighth embodiment shown in FIG. 11 employs a fluid cooling system similar to the seventh embodiment, except that the cylinder is sucked into the cylinder 15 and discharged. In addition to the suction and discharge system, a fluid circulation system exclusively for cooling is provided. In the eighth embodiment, as in the first embodiment shown in FIG.
- a cover plate lb is provided with a suction passage 13 and a discharge passage communicating with the suction port and the discharge port of the valve plate 10, and
- the cover plates lb, lc are provided with a fluid inlet 6 1 and a fluid outlet 6 2 which open to the internal space Id, and the inlet 6 1 and the outlet 6 2
- the rotor 3 is provided with an oblique hole 65 for generating a fluid flow from the inflow ⁇ 61 to the outlet 62, while communicating with the outlet 3 and the discharge pipe 64.
- the oblique hole 65 constitutes a fluid feeding means that acts as a pump for feeding the fluid at the inflow port 61 to the outflow port 62 with the centrifugal force generated by the rotation of the rotor 3.
- the rotor 3 it may be formed on the cylindrical hook 5 or between them.
- the bearings 7 and 8 of the spindle 6 are Both the cover plate lb, are provided to lc, the cover plate lb, fixing member to lc, means that may be rotatably supported to the main shaft 6 is provided on the stationary member including the casing 1 c
- the fluid in the description is an oil, the possibility of use of the c industrial applicable to liquids other than oil
- the fluid pressure generating device of the present invention is used, for example, for a hydraulic device of a machine tool, a vehicle, and a construction machine.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Reciprocating Pumps (AREA)
- Compressor (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Hydraulic Motors (AREA)
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940701132A KR100297208B1 (ko) | 1992-08-06 | 1993-08-03 | 유체압력발생장치 |
| DE69305836T DE69305836T2 (de) | 1992-08-06 | 1993-08-03 | Apparat zur druckfluessigkeitserzeugung |
| EP93916254A EP0611887B1 (en) | 1992-08-06 | 1993-08-03 | Fluid pressure generation apparatus |
| US08/211,315 US5591013A (en) | 1992-08-06 | 1993-08-03 | Fluid pressure generating device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4210313A JP2687822B2 (ja) | 1992-08-06 | 1992-08-06 | 流体圧力発生装置 |
| JP4/210313 | 1992-08-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1994003726A1 true WO1994003726A1 (fr) | 1994-02-17 |
Family
ID=16587352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1993/001083 Ceased WO1994003726A1 (fr) | 1992-08-06 | 1993-08-03 | Appareil produisant une pression fluidique |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5591013A (ja) |
| EP (1) | EP0611887B1 (ja) |
| JP (1) | JP2687822B2 (ja) |
| KR (1) | KR100297208B1 (ja) |
| CN (1) | CN1054907C (ja) |
| DE (1) | DE69305836T2 (ja) |
| WO (1) | WO1994003726A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020217114A1 (ja) * | 2019-04-22 | 2020-10-29 | ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | ブレーキ液圧制御装置 |
Families Citing this family (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2860745B2 (ja) * | 1993-03-22 | 1999-02-24 | アイエムブイ株式会社 | 振動試験装置 |
| US5708311A (en) * | 1996-07-17 | 1998-01-13 | Vickers, Inc. | Integrated electric motor driven in line hydraulic pump |
| DE19650270A1 (de) * | 1996-12-04 | 1998-06-10 | Sachsenhydraulik Gmbh | Hydrostatische Axialkolbenmaschine |
| CN1089404C (zh) * | 1997-08-01 | 2002-08-21 | 林艺 | 自锁流体驱动缸 |
| DE10015139A1 (de) * | 2000-03-29 | 2001-10-11 | Voith Turbo Kg | Motorpumpenaggregat |
| DE10249494A1 (de) * | 2002-10-24 | 2004-05-13 | Voith Turbo Gmbh & Co. Kg | Motorpumpenaggregat |
| DE10304121A1 (de) | 2003-01-31 | 2004-08-12 | Voith Turbo Gmbh & Co. Kg | Motorpumpenaggregat |
| DE10313426B3 (de) * | 2003-03-25 | 2004-11-11 | Sauer Bibus Gmbh | Verstellpumpeneinheit |
| DE10349752B4 (de) * | 2003-10-24 | 2006-04-06 | Voith Turbo Gmbh & Co. Kg | Motorpumpenaggregat |
| US7182583B2 (en) * | 2004-02-06 | 2007-02-27 | Sauer-Danfoss Inc. | Electro-hydraulic power unit with a rotary cam hydraulic power unit |
| DE202005005165U1 (de) † | 2005-04-01 | 2006-08-17 | Wagner, Paul-Heinz | Hydraulikaggregat |
| US20070053780A1 (en) * | 2005-09-02 | 2007-03-08 | Sauer-Danfoss Inc. | Improved design of integrated electro-hydraulic power unit |
| JP2007087311A (ja) * | 2005-09-26 | 2007-04-05 | Nippon Conlux Co Ltd | 硬貨処理装置 |
| DE102005050737B3 (de) * | 2005-10-22 | 2007-01-04 | Voith Turbo Gmbh & Co. Kg | Motor-Pumpen-Aggregat |
| US8668467B2 (en) | 2009-07-16 | 2014-03-11 | Parker Hannifin Corporation | Integrated fluid handling apparatus |
| CN102859194B (zh) * | 2010-01-29 | 2015-10-07 | 英格索尔-兰德公司 | 装有模块化附加调节器的空气马达 |
| CN102536722B (zh) * | 2011-12-23 | 2014-09-10 | 燕山大学 | 数控交流永磁伺服变速变量斜盘式轴向柱塞液压电机泵 |
| KR101408943B1 (ko) * | 2013-03-04 | 2014-06-17 | 안동대학교 산학협력단 | 플런저 펌프 |
| JP6254897B2 (ja) * | 2014-05-01 | 2017-12-27 | 川崎重工業株式会社 | 斜板形液圧回転機及びその製造方法 |
| GB201608449D0 (en) * | 2016-05-13 | 2016-06-29 | Rolls Royce Controls & Data Services Ltd | Axial piston pump |
| CN108223331B (zh) * | 2018-01-06 | 2023-12-26 | 西南石油大学 | 一种有杆抽油泵与地面驱动螺杆泵组合式抽油系统 |
| CN108691740B (zh) * | 2018-06-21 | 2024-03-26 | 华中科技大学 | 一种径向力平衡双斜盘柱塞式液压电机泵 |
| US11760228B2 (en) | 2021-05-11 | 2023-09-19 | Hyundai Motor Company | Electric power and thermal management system |
| KR20220153400A (ko) * | 2021-05-11 | 2022-11-18 | 현대자동차주식회사 | 프로펠러용 구동기를 이용한 오일 분산 시스템 |
| US12601332B2 (en) | 2023-07-07 | 2026-04-14 | Robert Bosch Gmbh | Integrated electro-hydraulic unit |
| US12031559B1 (en) * | 2023-07-07 | 2024-07-09 | Robert Bosch Gmbh | Integrated electro-hydraulic unit |
| US12435711B2 (en) * | 2023-09-12 | 2025-10-07 | Robert Bosch Gmbh | Integrated electro-hydraulic unit housing |
| US12460623B2 (en) * | 2023-09-27 | 2025-11-04 | Robert Bosch Gmbh | Integrated electro-hydraulic unit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5773867A (en) * | 1980-10-25 | 1982-05-08 | Honda Motor Co Ltd | Multi-plunger type hydraulic apparatus |
| JPS59231179A (ja) * | 1983-06-10 | 1984-12-25 | Daikin Ind Ltd | アキシヤルピストン機械 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1453599A1 (de) | 1964-02-24 | 1970-12-23 | Oram Harold George | Vorrichtung zur Erzeugung eines Fluessigkeitsdruckes |
| US3295457A (en) * | 1964-03-06 | 1967-01-03 | Oram Harold George | Fluid pressure developing units |
| JPS4632900Y1 (ja) * | 1968-12-10 | 1971-11-13 | ||
| US3672793A (en) * | 1970-10-28 | 1972-06-27 | Sperry Rand Corp | Power transmission |
| DE2260506A1 (de) | 1972-12-11 | 1974-06-12 | Mokesch Geb Seyfried Johanna | Axialkolbenpumpe fuer fluessigkeiten |
| DE2346646C2 (de) | 1973-09-17 | 1984-07-19 | Ludwig 7570 Baden-Baden Mokesch | Axialkolbenpumpe |
| JPS61116192A (ja) * | 1984-11-10 | 1986-06-03 | 株式会社クボタ | 複合鋳鉄管 |
| US4729717A (en) * | 1986-12-24 | 1988-03-08 | Vickers, Incorporated | Power transmission |
| US4850812A (en) * | 1987-09-18 | 1989-07-25 | Versatron Corporation | Integrated motor pump combination |
| US5220225A (en) * | 1992-06-17 | 1993-06-15 | Vickers, Incorporated | Integrated electric motor driven inline hydraulic apparatus |
-
1992
- 1992-08-06 JP JP4210313A patent/JP2687822B2/ja not_active Expired - Lifetime
-
1993
- 1993-08-03 WO PCT/JP1993/001083 patent/WO1994003726A1/ja not_active Ceased
- 1993-08-03 EP EP93916254A patent/EP0611887B1/en not_active Expired - Lifetime
- 1993-08-03 DE DE69305836T patent/DE69305836T2/de not_active Expired - Lifetime
- 1993-08-03 US US08/211,315 patent/US5591013A/en not_active Expired - Lifetime
- 1993-08-03 KR KR1019940701132A patent/KR100297208B1/ko not_active Expired - Lifetime
- 1993-08-06 CN CN93117659A patent/CN1054907C/zh not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5773867A (en) * | 1980-10-25 | 1982-05-08 | Honda Motor Co Ltd | Multi-plunger type hydraulic apparatus |
| JPS59231179A (ja) * | 1983-06-10 | 1984-12-25 | Daikin Ind Ltd | アキシヤルピストン機械 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP0611887A1 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020217114A1 (ja) * | 2019-04-22 | 2020-10-29 | ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | ブレーキ液圧制御装置 |
| US12122334B2 (en) | 2019-04-22 | 2024-10-22 | Robert Bosch Gmbh | Brake hydraulic pressure control apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| US5591013A (en) | 1997-01-07 |
| DE69305836D1 (de) | 1996-12-12 |
| EP0611887A1 (en) | 1994-08-24 |
| DE69305836T2 (de) | 1997-04-03 |
| CN1054907C (zh) | 2000-07-26 |
| CN1088662A (zh) | 1994-06-29 |
| KR100297208B1 (ko) | 2002-02-28 |
| EP0611887A4 (en) | 1995-01-25 |
| JP2687822B2 (ja) | 1997-12-08 |
| JPH0658251A (ja) | 1994-03-01 |
| EP0611887B1 (en) | 1996-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO1994003726A1 (fr) | Appareil produisant une pression fluidique | |
| US7677871B2 (en) | High-efficiency, large angle, variable displacement hydraulic pump/motor | |
| AU688070B2 (en) | Variable displacement piston type compressor | |
| AU661772B2 (en) | Swash plate type compressor with variable displacement mechanism | |
| US5765464A (en) | Reciprocating pistons of piston-type compressor | |
| US4884952A (en) | Variable displacement compressor | |
| US4880360A (en) | Variable displacement compressor with biased inclined member | |
| EP0809024B1 (en) | Reciprocating pistons of piston type compressor | |
| CN1617980A (zh) | 有一滑动套简的活塞式机械 | |
| EP0587023B1 (en) | Variable displacement piston type compressor | |
| US6508633B2 (en) | Swash plate type compressor of variable capacity type | |
| JP2001304108A (ja) | 圧縮機 | |
| JP2687822C (ja) | ||
| EP1211416B1 (en) | Swash plate type compressor | |
| US11549497B2 (en) | Hydraulic rotating machine | |
| JPH0518350A (ja) | 可変容量型アキシヤルピストン機械の容量制御装置 | |
| JP7377095B2 (ja) | 油圧ポンプ・モータ | |
| JP4203172B2 (ja) | 斜板式圧縮機 | |
| JP2008057343A (ja) | 油圧ピストンポンプ・モータ | |
| KR20030002024A (ko) | 가변용량 사판식 압축기의 구동축 지지용 스러스트 베어링지지구조 | |
| CN121497577A (zh) | 带预压缩容积的斜轴式轴向柱塞机 | |
| JP2025032381A (ja) | 油圧ポンプ及び建設機械 | |
| EP0857872A2 (en) | Variable-displacement swash-plate compressor | |
| JP2008057342A (ja) | 油圧ピストンポンプ・モータ | |
| JPH0454833B2 (ja) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Kind code of ref document: A1 Designated state(s): KR US |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 08211315 Country of ref document: US |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 1993916254 Country of ref document: EP Ref document number: 1019940701132 Country of ref document: KR |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
| WWP | Wipo information: published in national office |
Ref document number: 1993916254 Country of ref document: EP |
|
| WWG | Wipo information: grant in national office |
Ref document number: 1993916254 Country of ref document: EP |