CN208442017U - Pump installation - Google Patents
Pump installation Download PDFInfo
- Publication number
- CN208442017U CN208442017U CN201690001447.3U CN201690001447U CN208442017U CN 208442017 U CN208442017 U CN 208442017U CN 201690001447 U CN201690001447 U CN 201690001447U CN 208442017 U CN208442017 U CN 208442017U
- Authority
- CN
- China
- Prior art keywords
- pump
- opening portion
- port
- hole
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000009434 installation Methods 0.000 title claims abstract description 61
- 238000005086 pumping Methods 0.000 claims abstract description 43
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 description 17
- 230000005540 biological transmission Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000005520 electrodynamics Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- 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
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
-
- 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
- F04C14/04—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for reversible machines or pumps
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
In an embodiment of the illustration of the application, a kind of pump installation is provided, axis is included, is pivoted about with the central axis axially extended；Motor part makes axis bidirectional rotation；And pumping section, it is located at the axial side of motor part, is driven by motor part via axis.Pumping section includes pump gear, is mounted on an axle；The pump housing, with pump chamber and through hole, which is recessed from the axial side of the pump housing towards the axial other side, stores pump gear, which is open in the axial ends of the pump housing and passes through for axis, and the opening of the axial side of the through hole is open to pump chamber；Cricoid seal member is located in through hole, will seal between pump chamber and motor part；First port and second port, they are connected with pump chamber, are able to carry out sucking and oily discharge from pump chamber of the oil to pump chamber；And oil circuit, there is the first opening portion and the second opening portion, outs open of first opening portion between the seal member and pump chamber in through hole, which is connected in the radial outer side upper opening of pumping section with the first opening portion.
Description
Technical field
The utility model relates to pump installations.
Background technique
In the past, there is known the electrodynamic pumps for having used motor.In such electrodynamic pump, be provided with by motor part and pumping section it
Between the seal member that seals.For example, entering in Japanese Kokai special open 2004-353536 bulletin and being provided with sealing
Suction chamber reflux of the working oil from the return path being formed on the pump housing to working oil in the bottom of the recess portion of component.
But electrodynamic pump as described above is being used for such as stepless transmission (CVT:Continuously Variable
) etc. Transmission in the case where equipment, make motor to positive and negative bi-directional drive sometimes, come with the direction that switch operating oil stream is moved
Carry out using.In this case, in the electrodynamic pump shown in Japanese Kokai special open 2004-353536 bulletin, when
When the driving of motor is switched, working oil is discharged from discharge port to inhalation port.In this case, since pump operating member forms
In order to which the pressure of the working oil of high pressure is applied to seal member via the return path being connected with suction chamber.Exist as a result, close
Envelope component bears the case where not living the pressure of working oil and leaking working oil to motor part side.
Utility model content
In view of the above problems, in an embodiment of the illustration of the application, the first purpose is, provides following pump
Device: having the motor part for making axis bidirectional rotation, has and is able to suppress the construction that oil is leaked to motor part side.
In an embodiment of the illustration of the application, a kind of pump installation is provided, axis is included, to prolong along axial direction
The central axis stretched pivots about；Motor part makes axis bidirectional rotation；And pumping section, it is located at the axial direction of motor part
Side is driven by motor part via axis, which is characterized in that pumping section includes pump gear, is mounted on an axle；Pump
Body, with pump chamber and through hole, which is recessed from the axial side of the pump housing towards the axial other side, stores pump gear,
The through hole is open in the axial ends of the pump housing and passes through for axis, and the opening of the axial side of the through hole is open to pump chamber；Ring
The seal member of shape is located in through hole, will seal between pump chamber and motor part；First port and second port, they with
Pump chamber is connected, and is able to carry out sucking and oily discharge from pump chamber of the oil to pump chamber；And oil circuit, there is the first opening portion and the
Two opening portions, outs open of first opening portion between the seal member and pump chamber in through hole, which exists
The radial outer side upper opening of pumping section, is connected with the first opening portion.
In an embodiment of the illustration of the application, which is characterized in that the second opening portion is located at the pump housing.
In an embodiment of the illustration of the application, which is characterized in that pump installation also has to motor part and pumping section
The shell of the tubular kept, the pump housing have exposed division, and the extending part is in the position for leaning on axial side than shell, in shell
It is external expose, the second opening portion is located at exposed division.
In an embodiment of the illustration of the application, which is characterized in that oil circuit is located at towards radial outside
Axial side.
In an embodiment of the illustration of the application, which is characterized in that pump installation is installed on attached body, is mounted
Body has the pump housing recess being recessed along defined direction, which stores pumping section, in the medial surface of pump housing recess
At least part between the radial direction of pumping section is provided with gap, and the second opening portion is to clearance opening.
In an embodiment of the illustration of the application, which is characterized in that the second opening portion is located at than the first opening portion
Position on the downside of vertical direction.
In an embodiment of the illustration of the application, which is characterized in that the second opening portion, which is located at, leans on lead than through hole
Vertical side position to the upper side.
In an embodiment of the illustration of the application, which is characterized in that oil circuit linearly extends.
In an embodiment of the illustration of the application, which is characterized in that through hole includes path hole portion, with pump
Room connection；And major diameter hole portion, internal diameter are bigger than the internal diameter of path hole portion, connect with the motor part side of path hole portion, in major diameter
Seal member is maintained in hole portion, the first opening portion is open in major diameter hole portion.
In an embodiment of the illustration of the application, which is characterized in that pumping section also has the axial direction for being installed on the pump housing
The face upper opening of the pump cover of side, first port and second port in the axial side of pump cover.
In an embodiment of the illustration of the application, provide following pump installation: having makes axis bidirectional rotation
Motor part has and is able to suppress the construction that oil is leaked to motor part side.
There is the detailed description of the preferred embodiment for the present invention below, referring to attached drawing, can be more clearly understood that the present invention
Above-mentioned and other feature, element, step, features and advantages.
Detailed description of the invention
Fig. 1 is the cross-sectional view for showing the pump installation of present embodiment.
Fig. 2 is the cross-sectional view for showing the part of pump installation of present embodiment.
Fig. 3 is the cross-sectional view for showing the part of pump installation of present embodiment.
Fig. 4 is the cross-sectional view for being shown as the part of another pump installation of present embodiment.
Specific embodiment
Hereinafter, the pump installation for being directed at the embodiments of the present invention while referring to attached drawing is illustrated.In this implementation
In mode, the up and down direction in each figure is set as vertical direction.As shown in Figure 1, the pump installation 10 of present embodiment has axis
41, motor part 20, shell 12, cover 13 and pumping section 30.Axis 41 is pivoted about with the central axis J axially extended.
The axial direction that central axis J extends is the left and right directions in each figure, is the horizontal direction vertical with vertical direction.
Motor part 20 and pumping section 30 are axially arranged.In the opposite positional relationship of motor part 20 and pumping section 30
In, by the side (being right side in figure) where the motor part 20 in the axial direction of central axis J, referred to as " front side is (axial another
Side) ", the side (being left side in figure) where the pumping section 30 in the axial direction of central axis J is known as " rear side (axial side) ".
Also, the up and down direction in each figure is set as vertical direction.In addition, " front side " and " rear side " is merely to illustrate that and uses
Title does not limit actual positional relationship and direction.Also, the radial direction centered on central axis J is referred to as " radial direction ", it will
Circumferential direction centered on central axis J is referred to as " circumferential direction ".
As shown in Figure 1, pump installation 10 is installed on attached body CB.Attached body CB is vehicle body.Attached body CB tool
There is the pump housing recess BD for being recessed and storing pumping section 30 along defined direction.In Fig. 1, it is specified that direction be axial.Pump storage
Recess portion BD is recessed from the mounting surface CBa as the face on front side of attached body CB towards rear side.Pump housing recess BD along axial sight
The shape observed is not particularly limited, e.g. round.In addition, pump housing recess BD can also be along side intersecting axially
To up and down direction (vertical direction) recess of, example as shown in figure 1.Also, attached body CB is not limited to vehicle body, as long as can
The object for installing pump installation 10, is just not particularly limited.
In Fig. 1, in pump housing recess BD, other than pumping section 30, a part of motor part 20 has also been stored.It is pumping
At least part between the medial surface of housing recess BD and the radial direction of pumping section 30 is provided with clearance D P.Clearance D P is whole circumferential direction
The radial outside of pumping section 30 is surrounded in all ranges.
Pump housing recess BD bottom surface (face of rear side) on be provided with the first input/output end port CPa, second input/
Output port CPb and oil discharge outlet CPc.First input/output end port CPa and the second input/output end port CPb are according to axis 41
Direction of rotation and be switched to pump installation 10 provide oil input port and from pump installation 10 be discharged oil output port.Oil extraction
The oil that mouth CPc will be pumped in housing recess BD is discharged to fuel tank.In Fig. 1, the first input/output end port CPa, the second input/defeated
Exit port CPb and oil discharge outlet CPc is set gradually on the upside of vertical direction towards vertical direction downside.
Motor part 20 has rotor 40, stator 50, bearing 42 and bus bar unit 80.Rotor 40 is fixed on axis 41
On outer peripheral surface.Stator 50 is located at the radial outside of rotor 40.Bearing 42 can rotate the bearing of axis 41.Bearing 42 is by busbar
Unit 80 is kept.Bus bar unit 80 is connect with external power supply, provides power supply to stator 50.Motor part 20 makes 41 bidirectional rotary of axis
Turn.
In addition, in the present specification, " making axial bidirectional rotation " includes the axis that will be pivoted about with central axis J
The directions of 41 rotations are switched to towards a circumferential side (direction+θ) and towards circumferential another party (direction-θ).Fig. 2 and Fig. 4 are shown
Make axis 41 towards the case where circumferential side rotation, Fig. 3, which is shown, makes axis 41 towards the case where circumferential another party rotation.Fig. 2 extremely
In Fig. 4, bold arrows show the flowings of oil.
As shown in Figure 1, shell 12 is cylindrical in shape.In more detail, shell 12 is in the cylindrical shape centered on central axis J.
Shell 12 keeps motor part 20 and pumping section 30.Shell 12 has canister portion 14 and flange part 15.Canister portion 14 is in central axis
Cylindrical shape centered on line J.Stator 50 and the aftermentioned pump housing 31 are fixed in the inside of canister portion 14.Flange part 15 is from canister portion 14
Front end extends to radial outside.Flange part 15 is contacted from the front side of mounting surface CBa with mounting surface CBa.Pump installation 10 is opposite as a result,
It is positioned in the axial position of attached body CB.Cover 13 is fixed on the front side of shell 12.The front side of 13 covering motor part 20 of cover.
Pumping section 30 is located at the rear side (axial side) of motor part 20.Pumping section 30 is driven by motor part 20 via axis 41.Pump
Portion 30 has the pump housing 31, pump gear 61, seal member 92 and pump cover 32.
The pump housing 31 is fixed in shell 12 in the rear side of motor part 20.In the outer peripheral surface of the pump housing 31 and the inner peripheral surface of shell 12
Radial direction between be provided with O-ring 71.It is sealed between the radial direction of the inner peripheral surface of the outer peripheral surface of the pump housing 31 and shell 12 as a result,.
The pump housing 31 has the pump chamber 33 being recessed towards front side (the axial other side) and store pump gear 61 from rear side (axial side).
Although not shown, but pump chamber 33 the shape arrived along end on observation it is in rounded shape.
As shown in Figures 2 and 3, the pump housing 31 has through hole 31a, and through hole 31a is in axial ends opening and for axis 41
It passes through, the opening of rear side (axial side) is open to pump chamber 33.Through hole 31a successively has path hole portion towards front side from rear side
31b and major diameter hole portion 31c.
Path hole portion 31b is connect with pump chamber 33.Path hole portion 31b is the bearing by the bearing of axis 41 for that can rotate.Major diameter
Hole portion 31c is connect with the front side (20 side of motor part) of path hole portion 31b.The internal diameter of major diameter hole portion 31c is than in path hole portion 31b
Diameter is big.Seal member 92 is maintained in major diameter hole portion 31c.Major diameter hole portion 31c is open in front side (20 side of motor part).
The pump housing 31 has the external exposed division 36 exposed in shell 12, which, which is located at, leans on rear side than shell 12
The position of (axial side).In the present embodiment, the dew of exposed division 36 is into clearance D P.Exposed division 36 is 31 rear end of the pump housing
Part.Exposed division 36 is cylindric in axially extending.Exposed division 36 is be overlapped radially with pump chamber 33.
Pump gear 61 is mounted on axis 41.In more detail, pump gear 61 is installed on the rear end of axis 41.Pump gear 61 has
There is the internal rotor 62 being mounted on axis 41 and surrounds the outer rotor 63 of the radial outside of internal rotor 62.Internal rotor 62 is annular in shape.
Internal rotor 62 is the gear in radial outer side with tooth.Internal rotor 62 is fixed on axis 41.In more detail, in internal rotor
62 inside indentation has the rear end of axis 41.Internal rotor 62 and axis 41 are rotated around axial (direction ± θ) together.
Outer rotor 63 is in the ring-type for surrounding the radial outside of internal rotor 62.Outer rotor 63 is that have tooth on radially inner side face
Gear.Internal rotor 62 is engaged with each other with outer rotor 63, and being rotated by internal rotor 62 rotates outer rotor 63.Pass through interior turn
Son 62 and outer rotor 63 rotate, and can convey the oil in pump chamber 33 is drawn into from inhalation port to discharge port.
Seal member 92 is the cricoid component that will be sealed between pump chamber 33 and motor part 20.Seal member 92 is located at perforation
In the 31a of hole.In more detail, seal member 92 is chimeric with major diameter hole portion 31c.The rear end of seal member 92 is by due to path hole portion
The difference of the internal diameter of 31b and major diameter hole portion 31c and the step surface 31e of step generated is positioned.Step surface 31e be with it is axially vertical
Face.
In the present embodiment, seal member 92 is the cricoid oil sealing for surrounding central axis J.Seal member 92 has embedding
Conjunction portion 92a, interconnecting piece 92b, lip 92c and spring 92d.Fitting portion 92a is the cricoid portion chimeric with major diameter hole portion 31c
Point.Fitting portion 92a is axially extended.Interconnecting piece 92b is the cricoid portion extended from the front end of fitting portion 92a to radially inner side
Point.
Lip 92c is the cricoid part extended from the radial inner end of interconnecting piece 92b to rear side.Lip 92c has to diameter
The terminal part 92e protruded inwardly.Spring 92d is set to the radial outside of lip 92c, applies to lip 92c inside towards diameter
The elastic force of side.Lip 92c is pressed to axis 41 as a result,.Therefore, terminal part 92e is directly contacted with axis 41 or is moistened across oil etc.
Lubrication prescription and mediate contact, so as to prevent the oil in pump chamber 33 across axis 41 and the radial direction of seal member 92 and to horse
It is leaked up to portion 20.
The space S surrounded by fitting portion 92a, interconnecting piece 92b and lip 92c is provided in seal member 92.It is close
The oil that envelope component 92 intercepts accumulates in such as space S.In addition, as long as seal member 92 can be by pump chamber 33 and motor part 20
Between seal, be just not particularly limited.
Pump cover 32 is installed on the rear side (axial side) of the pump housing 31.Pump cover 32 has pump cover main body 32a, the first connector portion
32b and the second connector portion 32c.Pump cover main body 32a is disk-shaped in radially expanding.Cover main body 32a is pumped by pump chamber 33
The opening of rear side blocks.
First connector portion 32b and the second connector portion 32c is in the cylindrical shape axially extended.First connector portion 32b
It is open with the second connector portion 32c in axial ends.First connector portion 32b and the second connector portion 32c from pump cover main body 32a
Extend to rear side.
First connector portion 32b is embedded in the first input/output end port CPa.In the outer peripheral surface of the first connector portion 32b
O-ring 70a is provided between the radial direction of the inner peripheral surface of the first input/output end port CPa.The first connector portion 32b as a result,
It is sealed between the radial direction of the inner peripheral surface of outer peripheral surface and the first input/output end port CPa.First connector portion 32b and pump cover master
Body 32a is integrated component.
Second connector portion 32c is located at the position than the first connector portion 32b on the downside of vertical direction.Second connector portion
32c is embedded in the second input/output end port CPb.In the outer peripheral surface and the second input/output end port of the second connector portion 32c
O-ring 70b is provided between the radial direction of the inner peripheral surface of CPb.As a result, the outer peripheral surface of the second connector portion 32c with second input/it is defeated
It is sealed between the radial direction of the inner peripheral surface of exit port CPb.Second connector portion 32c is the component seperated with pump cover main body 32a.
Pumping section 30 has first port 35a and second port 35b.First port 35a and second port 35b is set to pump cover
32.First port 35a includes the inside of the first connector portion 32b.Second port 35b includes the inside of the second connector portion 32c.
Face upper opening of the first port 35a and second port 35b in the rear side (axial side) of pump cover 32.First port 35a is by first
The inside of input/output end port CPa and the inside of pump chamber 33 connect.Second port 35b is by the second input/output end port
The inside of CPb and the inside of pump chamber 33 connect.
First port 35a and second port 35b be connected with pump chamber 33 and be able to carry out oil to pump chamber 33 sucking and
Oil is from the port of the discharge of pump chamber 33.That is, first port 35a and second port 35b allow hand over to suck oil to pump chamber 33
Inhalation port and the discharge port that oil is discharged from pump chamber 33.
For example, as shown in Fig. 2, first port 35a is in the case where axis 41 is rotated towards a circumferential side (direction+θ)
Discharge port, second port 35b are inhalation port.Also, the first input/output end port CPa be output port, second input/
Output port CPb is input port.In this case, oil from the second input/output end port CPb via second port 35b and by
It is drawn into pump chamber 33.The oil being inhaled into pump chamber 33 is conveyed by pump gear 61, defeated to first via first port 35a
Enter/output port CPa discharge.
On the other hand, as shown in figure 3, in the case where axis 41 is rotated towards circumferential another party (direction-θ), first port
35a is inhalation port, and second port 35b is discharge port.Also, the first input/output end port CPa be input port, second
Input/output end port CPb is output port.In this case, oil is from the first input/output end port CPa via first port 35a
And it is inhaled into pump chamber 33.The oil being inhaled into pump chamber 33 is conveyed by pump gear 61, via second port 35b to the
Two input/output end port CPb discharge.
As shown in Figures 2 and 3, pumping section 30 has oil circuit 34.Oil circuit 34 plays the external connection of through hole 31a and pumping section 30
Come.Oil circuit 34 includes the first opening portion 34a, separates in seal member 92 and the portion between pump chamber 33 in through hole 31a
Mouthful；And second opening portion 34b be connected in the radial outer side upper opening of pumping section 30 with the first opening portion 34a.
In addition, in the present specification, " part between seal member and pump chamber in through hole " includes in through hole
From the part sealed by seal member to the part being open to pump chamber.In figure 2 and figure 3, " seal member and pump in through hole
Part between room " leans on the portion of rear side comprising the part that the terminal part 92e than lip 92c in through hole 31a is contacted with axis 41
Point.
Here, consider that first port 35a is discharge port, the feelings that second port 35b is inhalation port as shown in FIG. 2
Condition.When conveying oil to first port 35a from second port 35b via pump gear 61, first end is made by pump gear 61
The pressure of oil in mouth 35a becomes relatively high pressure.Become a part of oil of relatively high pressure sometimes from first end
The mouth side 35a is flowed into through hole 31a via between the outer peripheral surface of axis 41 and the inner peripheral surface of path hole portion 31b.It is flowed into and passes through
Oil in through-hole 31a is intercepted by seal member 92, accumulates the portion between the seal member 92 in through hole 31a and pump chamber 33
Point.
Part between seal member 92 in through hole 31a and pump chamber 33 is connect with oil circuit 34.Therefore, through hole 31a
Interior oil is flowed into oil circuit 34 from the first opening portion 34a, via the second opening portion 34b to the external discharge of pumping section 30.By
This, it is suppressed that the pressure of the oil in through hole 31a is got higher.
On the other hand, consider that first port 35a is inhalation port as shown in FIG. 3, second port 35b is discharge port
The case where.When conveying oil to second port 35b from first port 35a via pump gear 61, make the by pump gear 61
The pressure of oil in Two-port netwerk 35b becomes relatively high pressure.Become a part of the oil of relatively high pressure sometimes from the
The side Two-port netwerk 35b is flowed into through hole 31a via between the outer peripheral surface of axis 41 and the inner peripheral surface of path hole portion 31b.It flows into
Oil into through hole 31a is intercepted by seal member 92, is accumulated between the seal member 92 in through hole 31a and pump chamber 33
Part.
In this case, the oil accumulated in through hole 31a is flowed into oil circuit 34 from the first opening portion 34a, via the
Two opening portion 34b and external discharge to pumping section 30.Thus, it is suppressed that the pressure of the oil in through hole 31a is got higher.
Also, in the present embodiment, due to being not provided with the oil for being directly connected to through hole 31a and pump chamber 33
Road, therefore the pressure of the higher oil of pressure ratio in the port as discharge port in first port 35a and second port 35b
Seal member 92 will not be applied to.Thus, it is suppressed that oil is leaked to 20 side of motor part.
As described above, according to the present embodiment, make axis 41 towards the feelings of any direction rotation in two-way
Will not all high pressure be applied to seal member 92 under condition, so as to inhibit oil to leak to 20 side of motor part.Further, it is possible to inhibit close
Envelope component 92 due to the higher oil of pressure ratio pressure and be lost or breakage.
Also, for example, oil circuit is easy elongated when the second opening portion is in the case where the axial end face upper opening of pumping section.And
And in this case, in order to avoid the interference with first port and second port, the shape of oil circuit complicates sometimes.It deposits as a result,
Become the problem of trouble in the production of oil circuit.In contrast, according to the present embodiment, since the second opening portion 34b is in pumping section 30
Radial outer side upper opening, therefore be easy to make oil circuit 34 to shorten and become simple shape.Therefore, oil circuit 34 can be made
Production becomes easy.
Also, since first port 35a and second port 35b are connect with each input/output end port, in first port
The gap of the side of 35a and second port 35b opening, pump installation 10 and attached body CB are easy to become smaller.In contrast, in this reality
It applies in mode, since first port 35a and second port 35b is in the rear openings of pump cover 32, the second opening portion 34b opening
Direction and first port 35a and the direction that is open second port 35b it is different.Therefore, the one of the second opening portion 34b opening
The gap (being clearance D P in figure) of side, pump installation 10 and attached body CB tends to get bigger.Therefore, it is easy from the second opening portion
34b discharge oil.
First opening portion 34a is open in major diameter hole portion 31c.Since through hole 31a has internal diameter than path hole portion 31b's
The big major diameter hole portion 31c of internal diameter, therefore be flowed into the oil in through hole 31a from the port of the side as discharge port and especially hold
Easily accumulate in major diameter hole portion 31c.Therefore, it is easy from the first opening portion 34a discharge oil being open in major diameter hole portion 31c.By
This, can further suppress oil and leak to 20 side of motor part.
In figure 2 and figure 3, part of the first opening portion 34a in the ratio axis 41 in major diameter hole portion 31c on the downside of vertical direction
Opening.First opening portion 34a is in step surface 31e upper opening.That is, rear side and major diameter hole portion 31c of the oil circuit 34 from major diameter hole portion 31c
Connection.In the present embodiment, the first opening portion 34a is open to space S.Since oil is easy to accumulate in major diameter hole portion 31c
In space S, therefore it is easier that oil is discharged from through hole 31a.
Second opening portion 34b is located at the pump housing 31.For example, in the case where the second opening portion 34b is located at pump cover 32, oil circuit 34
It is arranged across the pump housing 31 and pump cover 32.Therefore, it in order to which oil circuit 34 is arranged, needs to process the pump housing 31 and pump 32 both sides of cover
Deng.Therefore, the production of oil circuit 34 becomes trouble.In contrast, as long as the second opening portion 34b is located at the pump housing 31, it will be able to only exist
Oil circuit 34 is set on the pump housing 31.Therefore, oil circuit 34 can be made and only the pump housing 31 is carried out and being processed etc..Therefore, can subtract
Trouble in the production of few oil circuit 34.
Second opening portion 34b is located at exposed division 36.For example, being located at being accommodated in outside in the pump housing 31 in the second opening portion 34b
In the case where part in shell 12, in order to which the oil being discharged from the second opening portion 34b to be discharged to the external of pump installation 10, need
The hole etc. radially penetrated through is set on shell 12.Therefore, it is necessary to implement to process to shell 12, become trouble.In contrast, pass through
Second opening portion 34b is set to exposed division 36, can will be discharged from the second opening portion 34b without implementing processing to shell 12
External discharge of the oil to pump installation 10.
Second opening portion 34b is open to clearance D P.Therefore, the oil being discharged from the second opening portion 34b can be stored to pump
Discharge in recess portion BD.For example, it is contemplated that setting pumps housing recess and pump installation is directly installed on mounting surface not in attached body
First-class situation.In this case, it in order to the second opening portion 34b to be connect with oil discharge outlet, such as needs in addition to be arranged second
Connectivity port that opening portion 34b and oil discharge outlet connect, etc..There are problems that pump installation as a result, structure is complicated to change.And
And when connectivity port and oil discharge outlet are connected, it is also desirable to it will be sealed between connectivity port and oil discharge outlet, it will to exist
Pump installation is installed on the problem that attached body becomes more troublesome.
In contrast, it by the way that pumping section 30 to be accommodated in pump housing recess BD, can will be discharged from the second opening portion 34b
Oil to pump housing recess BD in be discharged and make its to oil discharge outlet CPc flow.Only pass through the radial outside in pumping section 30 as a result,
The second opening portion 34b being open to clearance D P is set on face, it will be able to make to be discharged to the oil outside pumping section 30 via oil discharge outlet
CPc and return to fuel tank.Therefore, the structure of pump installation 10 can be made simple, and the installation for being able to suppress pump installation 10 becomes
It is more troublesome.
Second opening portion 34b is located at the position than the first opening portion 34a on the downside of vertical direction.Therefore, in oil circuit 34
Interior, oil can be flowed by gravity from the first opening portion 34a towards the second opening portion 34b.It is easy as a result, by through hole 31a
External discharge of the interior oil to pumping section 30.
Oil circuit 34 is located at rear side (axial side) with towards radial outside.Therefore, be easy by oil circuit 34 be located at than
Exposed division 36 of the shell 12 by the position of rear side connects.Also, since the shape of oil circuit 34 can be using relative to axial direction
Inclined shape, therefore oil is easy to flow in oil circuit 34.In figure 2 and figure 3, oil circuit 34 is located at lead with towards rear side
On the downside of vertical direction.Therefore, oil readily along oil circuit 34 inclination and flow, thus from the second opening portion 34b be discharged.
Oil circuit 34 linearly extends.Thus, for example oil is in oil circuit compared with the case where oil circuit 34 is in the shape bent etc.
Flowing is easy in 34.Thus, it is easier to the oil in through hole 31a be discharged.Further, it is possible to by the pump housing 31 linearly
Aperture and make oil circuit 34.Therefore, being easy to make for oil circuit 34 can be made.
Pump installation 10 is for example for having the stepless transmission (CVT) of two belt wheels connected by transmission belt.
In this case, for example, being provided with mechanical pump driven by the engine in the upstream of pump installation 10.By by mechanical pump with it is electronic
Pump installation 10 be applied in combination, be used only mechanical pump the case where compared with, loss can be reduced, can be improved stepless transmission
Efficiency.
Pump installation 10 changes the width in the rotary axis direction of two belt wheels by providing oil.Change stepless change as a result,
The gear ratio of fast device.Since the flow reversal of oil can be made in 10 axis of pump installation, 41 bidirectional rotation.Thereby, it is possible to logical
A pump installation 10 is crossed to change the width of two belt wheels.Therefore, the quantity that can reduce pump installation 10 can reduce to stepless
Speed changer provides the manufacturing cost of the hydraulic system of oil.
As above, by the way that pump installation 10 is applied to stepless transmission, this above-mentioned reality can be more effectively obtained
Apply the function and effect of the pump installation 10 of mode.
The utility model is not limited to above-mentioned embodiment, can also be using other structures.In the following description, have
When a pair structure identical with above description suitably mark identical label etc. and omit the description.
As long as the position that the first opening portion 34a in through hole 31a is open between seal member 92 and pump chamber 33,
It is not particularly limited.First opening portion 34a can also be connect with path hole portion 31b.
Also, the shape of oil circuit 34 is not particularly limited.Oil circuit 34 is also possible to the shape radially extended, is also possible to
In the shape of midway bending, it is also possible to the shape of curvilinear extension.
Also, pump installation 10 is also possible to structure as pump installation 110 shown in Fig. 4.In the pumping section of pump installation 110
In 130, oil circuit 134 is set to the pump housing 131.First opening portion 134a is in the ratio axis 41 in major diameter hole portion 31c in vertical direction
The outs open of side.
Second opening portion 134b is located at the position than through hole 31a on the upside of vertical direction.Therefore, from the second opening portion
The oil of 134b discharge flows on the surface of pump installation 110 before flowing to oil discharge outlet CPc.Thereby, it is possible to using oil come cold
But pump installation 110.
Upper end opening of the second opening portion 134b in exposed division 36.Therefore, it is capable of increasing from the second opening portion 134b and is discharged
The area that is flowed through on 110 surface of pump installation before flowing to oil discharge outlet CPc of oil.Thereby, it is possible to further cold using oil
But pump installation 110.Oil circuit 134 is located on the upside of vertical direction with towards rear side.
It is in the above description, axial to use the horizontal direction vertical with vertical direction, but not limited to this.It is axial can also be with
It is the direction parallel with vertical direction, is also possible to the direction intersected with horizontal direction.
It is not particularly limited using the equipment of the pump installation of the utility model, the pump installation of the utility model can be used for
Equipment other than stepless transmission.
Above-mentioned each structure can be appropriately combined in not conflicting range.
Claims (10)
1. a kind of pump installation, includes
Axis is pivoted about with the central axis axially extended；
Motor part makes the axis bidirectional rotation；And
Pumping section is located at the axial side of the motor part, is driven by the motor part via the axis,
The pump installation is characterized in that,
The pumping section includes
Pump gear, installation is on the shaft；
The pump housing, with pump chamber and through hole, which is recessed from the axial side of the pump housing towards the axial other side, receives
Receive the pump gear, the through hole the pump housing axial ends opening and passed through for the axis, axial the one of the through hole
The opening of side is open to the pump chamber；
Cricoid seal member is located in the through hole, will seal between the pump chamber and the motor part；
First port and second port, they are connected with the pump chamber, are able to carry out the sucking of oil to the pump chamber with oily from institute
State the discharge of pump chamber；And
Oil circuit has the first opening portion and the second opening portion, the sealing of first opening portion in the through hole
Outs open between part and the pump chamber, second opening portion the pumping section radial outer side upper opening, with described
One opening portion is connected.
2. pump installation according to claim 1, which is characterized in that
Second opening portion is located at the pump housing.
3. pump installation according to claim 2, which is characterized in that
The pump installation also has the shell of the tubular kept to the motor part and the pumping section,
The pump housing has exposed division, and the extending part is in the position for leaning on axial side than the shell, in the outer of the shell
Portion exposes,
Second opening portion is located at the exposed division.
4. pump installation according to claim 3, which is characterized in that
The oil circuit is located at axial side with towards radial outside.
5. according to claim 1 to pump installation described in any one in 4, which is characterized in that
The pump installation is installed on attached body,
The attached body has the pump housing recess being recessed along defined direction, which stores the pumping section,
At least part between the medial surface of the pump housing recess and the radial direction of the pumping section is provided with gap,
Second opening portion is to the clearance opening.
6. pump installation according to claim 1, which is characterized in that
Second opening portion is located at the position than first opening portion on the downside of vertical direction.
7. pump installation according to claim 1, which is characterized in that
Second opening portion is located at the position than the through hole on the upside of vertical direction.
8. pump installation according to claim 1, which is characterized in that
The oil circuit linearly extends.
9. pump installation according to claim 1, which is characterized in that
The through hole includes
Path hole portion is connect with the pump chamber；And
Major diameter hole portion, internal diameter are bigger than the internal diameter of the path hole portion, connect with the motor part side of the path hole portion,
The seal member is maintained in the major diameter hole portion,
First opening portion is open in the major diameter hole portion.
10. pump installation according to claim 1, which is characterized in that
The pumping section also has the pump cover for the axial side for being installed on the pump housing,
The face upper opening of the first port and the second port in the axial side of the pump cover.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-247941 | 2015-12-18 | ||
| JP2015247941 | 2015-12-18 | ||
| PCT/JP2016/087681 WO2017104844A1 (en) | 2015-12-18 | 2016-12-16 | Pump device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208442017U true CN208442017U (en) | 2019-01-29 |
Family
ID=59056840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201690001447.3U Expired - Fee Related CN208442017U (en) | 2015-12-18 | 2016-12-16 | Pump installation |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2017104844A1 (en) |
| CN (1) | CN208442017U (en) |
| WO (1) | WO2017104844A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520322A (en) * | 2019-02-04 | 2020-08-11 | 施瓦本冶金工程汽车有限公司 | Internal gear pump |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022150296A (en) * | 2021-03-26 | 2022-10-07 | 日本電産トーソク株式会社 | electric pump |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5221721B2 (en) * | 1972-06-19 | 1977-06-13 | ||
| JPH0193388U (en) * | 1987-12-10 | 1989-06-20 | ||
| JP2007292005A (en) * | 2006-04-27 | 2007-11-08 | Hitachi Ltd | Pump device and power steering device |
| DE102008053318A1 (en) * | 2008-10-27 | 2010-04-29 | Trw Automotive Gmbh | Reversible actuatable toothed wheel machine e.g. inner toothed wheel pump, for use in electro hydraulic vehicle steering system, has bearing chambers subjected with hydraulic fluid, and forming hydrostatic bearing for toothed wheels |
| US8459972B2 (en) * | 2010-02-25 | 2013-06-11 | Mp Pumps, Inc. | Bi-rotational hydraulic motor with optional case drain |
| JP6084858B2 (en) * | 2013-02-25 | 2017-02-22 | アスモ株式会社 | Electric pump and electric pump assembly method |
| JP6154668B2 (en) * | 2013-05-30 | 2017-06-28 | 日本電産トーソク株式会社 | Brushless motor control device |
-
2016
- 2016-12-16 WO PCT/JP2016/087681 patent/WO2017104844A1/en active Application Filing
- 2016-12-16 CN CN201690001447.3U patent/CN208442017U/en not_active Expired - Fee Related
- 2016-12-16 JP JP2017556487A patent/JPWO2017104844A1/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520322A (en) * | 2019-02-04 | 2020-08-11 | 施瓦本冶金工程汽车有限公司 | Internal gear pump |
| CN111520322B (en) * | 2019-02-04 | 2022-04-19 | 施瓦本冶金工程汽车有限公司 | Internal gear pump |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017104844A1 (en) | 2017-06-22 |
| JPWO2017104844A1 (en) | 2018-10-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190129 |