CN208803993U - Electric oil pump - Google Patents
Electric oil pump Download PDFInfo
- Publication number
- CN208803993U CN208803993U CN201821455903.9U CN201821455903U CN208803993U CN 208803993 U CN208803993 U CN 208803993U CN 201821455903 U CN201821455903 U CN 201821455903U CN 208803993 U CN208803993 U CN 208803993U
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- Prior art keywords
- pump
- retainer
- axial
- pump cover
- hole
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- 238000005086 pumping Methods 0.000 claims abstract description 26
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 230000000694 effects Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003305 oil spill Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Fluid-Driven Valves (AREA)
- Rotary Pumps (AREA)
Abstract
The utility model provides a kind of electric oil pump, has simple structure and is able to suppress the retainer of the increase of cost.Electric oil pump (1) has motor part and pumping section (40).Pumping section (40) has pump rotor (47) and pump case (51).Pump case (51) has the pump housing and pump cover (57).Pump cover (57) have inflow entrance, outflux (57d), connection incorporating section (69) and outflux (57d) between supply oil circuit (57e), be set to supply oil circuit (57e) in open and close valve (57f), check-valves (57g) and the guide's oil circuit connecting between inflow entrance and open and close valve (57f).Open and close valve (57f) has slide valve hole portion (57f1), slide valve (57f2), spring members (57f3) and retainer (57f4).Pump cover (57) has the through hole (63) being connected to the opening portion (57f5) of slide valve hole portion (57f1).Retainer (57f4) runs through through hole (63), and the pump housing is engaged with pump cover, so that retainer (57f4) is fixed on pump cover (57).
Description
Technical field
The utility model relates to electric oil pumps.
Background technique
In electric oil pump, such as there is known the constructions with overflow valve like that recorded in patent document 1.It is pumped in storage
When the pressure of the pressure oil of the receiving room of the pump rotor in portion is more than specified value, overflow valve, which carries out valve opening, goes out remaining oil stream, from
And the pressure for storing indoor pressure oil is maintained in specified value.
The retainer for constituting the component of a part of overflow valve is provided in overflow valve.Retainer be resin material system and
It is cylindric.Retainer have axially through and fuel feeding circulation through hole.The end of the axial side of through hole is valve opening,
The valve opening is opened and closed in spool.Overflow valve has the spring to exert a force to spool to valve opening side, when the pressure oil in incorporating section
When pressure is more than specified value, spool overcomes the active force of spring and moves to open valve opening.It is in the outer peripheral surface of retainer
Annularly it is arranged fluted.O-ring is provided in groove.In addition, in circumferential direction on the outer peripheral surface of the axial side of retainer
Above have and has been positioned apart from multiple recess portions.
Patent document 1: No. 6074951 bulletins of Japanese Patent
The retainer of resin documented by patent document 1 is provided with through hole, groove, recess portion, the construction of the retainer
It is complicated.Therefore, retainer needs are integrally formed by resin, thus are easy to cause the increase of cost.
Utility model content
The purpose of the utility model is to provide a kind of electric oil pump, which has simple structure and can press down
The retainer of this increase is made.
First utility model of the illustration of the application is a kind of electric oil pump, which includes motor part, have
Axis centered on the central axis extended in the axial direction；Pumping section is located at the axial side of the motor part, by the motor
Portion drives the pumping section through the axis, so that oil is discharged the pumping section, the pumping section includes pump rotor, quilt
It is installed on from the motor part in the axial direction the side axis outstanding；And pump case, there are the receipts for storing the pump rotor
Receive portion, the pump case includes the pump housing, is installed on the axial side of the motor part；And pump cover, it is installed on the pump housing
Axial side, pump cover includes inflow entrance, enters for the oil stream；Outflux goes out for the oil stream；Oil circuit is supplied,
It is connected between the incorporating section and the outflux；Open and close valve is set in the supply oil circuit, will be from the incorporating section
The oil of supply is for being given to the outflux side or cutting supply；Check-valves is set in the supply oil circuit, is allowed
The oil flows to the outflux side and the oil is prevented to flow to the incorporating section side；And guide's oil circuit, connection
Between the inflow entrance and the open and close valve, the open and close valve includes slide valve hole portion, is located at more outside by diameter than the incorporating section
The position of side is upwardly extended in the side with the central axis upright；Slide valve is inserted in the slide valve hole portion, Neng Gouyan
The extending direction of the slide valve hole portion is mobile；Spring members, to extending direction from the slide valve to the slide valve hole portion one
Side force；And retainer, it is covered on the opening portion of another side opening of the slide valve hole portion, the pump cover has perforation
Hole, the through hole extend in the axial direction and are connected to the opening portion of another side opening in the slide valve hole portion, the retainer
Through the through hole, and the pump cover end of the axial other side of the pump body end surface of the axial side of the pump housing and the pump cover
Face bonding, so that the retainer is fixed in the pump cover.
According to the first utility model of the illustration of the application, be capable of providing following electric oil pump: have simple structure and
It is able to suppress the retainer of the increase of cost.
Detailed description of the invention
Fig. 1 is the axial cross-sectional view of the electric oil pump of first embodiment.
Fig. 2 is the plan view from the electric oil pump of front side.
Fig. 3 is comparable to the cross-sectional view of the pump cover of the I-I arrow direction in Fig. 1.
Fig. 4 is comparable to the cross-sectional view of the electric oil pump of the IIa-IIa arrow direction in Fig. 2.
Fig. 5 is comparable to the cross-sectional view of the electric oil pump of the IIb-IIb arrow direction in Fig. 2.
Label declaration
1: electric oil pump；10: motor part；11: axis；40: pumping section；47: pump rotor；51: pump case；52d: end face (pump housing side
End face)；57: pump cover；57a1: end face (pump cover side end face)；57c: inflow entrance；57d: outflux；57e: supply oil circuit；57f: it opens
Valve closing；57f1: slide valve hole portion；57f2: slide valve；57f3: spring members；57f4,62: opening portion；57f12: buckling portion；57f13:
Side；57h: guide's oil circuit；60: incorporating section；61: seal member；63: through hole；64: housing recess；J: central axis；S: area
Domain.
Specific embodiment
Hereinafter, being illustrated referring to electric oil pump of the attached drawing to the embodiments of the present invention.In addition, below attached
In figure, for ease of understanding each structure, make sometimes actual construction from each construction scale bar and quantity etc. it is different.
In addition, in the accompanying drawings, suitably showing XYZ coordinate system as three-dimensional orthogonal coordinate system.In XYZ coordinate system, Z axis side
To for the direction parallel with the axial other direction of central axis J shown in FIG. 1.X-direction be and electric oil pump shown in FIG. 1
The parallel direction of 1 width direction, the i.e. left and right directions of Fig. 1.Y direction is vertical with both X-direction and Z-direction
Direction.
In addition, in the following description, the positive side (side+Z) of Z-direction is denoted as " rear side ", by the negative side of Z-direction (-
The side Z) it is denoted as " front side ".In addition, rear side and front side are only for the title of explanation, not to actual positional relationship and direction into
Row limits.In addition, the direction (Z-direction) parallel with central axis J is abbreviated as " axial direction " as long as no special explanation,
Radial direction centered on central axis J is abbreviated as " radial direction ", by centered on central axis J circumferential direction, i.e. around central axis J
Direction (direction θ) be abbreviated as " circumferential direction ".
In addition, in the present specification, it is so-called to extend in the axial direction, in addition to what is strictly extended in axial direction (Z-direction)
Except situation, also included in the case where inclined side upwardly extends in the range of less than 45 ° relative to axial direction.In addition, at this
It is so-called to extend radially in specification, in addition to strictly being upwardly extended in radial, side i.e. vertical with axial direction (Z-direction)
The case where except, also be included in relative to radial direction inclined side upwardly extends in the range of less than 45 ° the case where.
[first embodiment]
< overall structure >
Fig. 1 is the cross-sectional view of the electric oil pump 1 of first embodiment.As shown in Figure 1, the electric oil pump 1 of present embodiment
With motor part 10 and pumping section 40.Motor part 10 has the axis 11 along the central axis J configuration extended in the axial direction.Pumping section 40
Positioned at the axial side (front side) of motor part 10, pumping section 40 is driven by 10 warp beam 11 of motor part, thus 40 row of pumping section
It is fuel-displaced.Intermediate member 70 is provided between motor part 10 and pumping section 40.Hereinafter, being said in detail according to each component parts
It is bright.
10 > of < motor part
As shown in Figure 1, motor part 10 has axis 11, rotor 20, stator 22 and motor shell 13.
Motor part 10 is, for example, the motor of inner-rotor type, and rotor 20 is fixed on the outer peripheral surface of axis 11, and stator 22 is located at
The radial outside of rotor 20.
(motor shell 13)
Motor shell 13 stores rotor 20 and stator 22.Motor shell 13 has stator maintaining part 13a, intermediate member maintaining part
13b and bearing cage 13c.Motor shell 13 is metal product.Motor shell 13 is that have bottom at the axial other side (rear side)
The bottomed tube of 13f.
(stator maintaining part 13a)
Stator maintaining part 13a is the cylindrical shape extended in the axial direction.Configured with motor part 10 in stator maintaining part 13a
Axis 11, rotor 20 and stator 22.The lateral surface and stator maintaining part of the lateral surface of stator 22, i.e. aftermentioned core-back 22a
The inner peripheral surface 13a1 of 13a cooperates.Stator 22 is accommodated in stator maintaining part 13a as a result,.
(intermediate member maintaining part 13b)
Intermediate member maintaining part 13b is the part being connected with the anterior end 13a2 of stator maintaining part 13a.In this embodiment party
In formula, intermediate member maintaining part 13b has the end 13b1 of tubular extended from anterior end 13a2 to front side and from end
The cricoid flange part 13b2 that the anterior end of 13b1 extends to radial outside.
End 13b1 is annular shape, is extended to radial outside to front side with extending than stator maintaining part 13a.Motor shell 13
The end of axial side (front side) is connect with wall portion 70d.In the present embodiment, in the inner surface of end 13b1 inserted with centre
The wall portion 70d of the rear side of component 70, end 13b1 are connect with wall portion 70d.
(bearing cage 13c)
As shown in Figure 1, bearing cage 13c is set to the bottom 13f of motor shell 13.Bearing cage 13c is in motor shell
13 bottom 13f have front openings and to rear side be recessed bearing incorporating section 13f1.Bearing incorporating section 13f1 is seen from front side
It is circle when examining.The central axis J arranged coaxial of bearing incorporating section 13f1 and axis 11.The axis being set in the 13f1 of bearing incorporating section
The rear end for holding 16 pairs of axis 11 supports.
(rotor 20)
As shown in Figure 1, rotor 20 is fixed in the rear side of axis 11.Rotor 20 has rotor core 20a and rotor magnet
20b.Rotor core 20a circumferentially (direction θ) surrounds axis 11, and is fixed on axis 11.Rotor magnet 20b is fixed on rotor core
On the circumferentially lateral surface in (direction θ) of 20a.Rotor core 20a and rotor magnet 20b rotates together with axis 11.In addition, rotor
20 are also possible to the embedding magnet type for having permanent magnet in the embedment of the inside of rotor 20.With the surface that permanent magnet is set to rotor 20
On surface magnet compare, the rotor 20 of embedding magnet type can reduce the danger that magnet is removed by centrifugal force, in addition, energy
Reluctance torque is enough positively utilized.
(stator 22)
Stator 22 is located at the radial outside of rotor 20, and circumferentially (direction θ) surrounds rotor 20, makes rotor 20 around central axis
J rotation.Stator 22 has core-back 22a, teeth portion 22c, coil 22b and insulating part (bobbin winder bracket) 22d.
The shape of core-back 22a is the cylindrical shape concentric with axis 11.Medial surface court of the teeth portion 22c from core-back 22a
Extend to axis 11.Teeth portion 22c is provided with multiple, is configured in the circumferential direction of the medial surface of core-back 22a with impartial interval.Line
It encloses 22b to be arranged around insulating part (bobbin winder bracket) 22d, be constituted by winding conductor wire 22e.Insulating part (bobbin winder bracket) 22d
It is installed on each teeth portion 22c.
(axis 11)
As shown in Figure 1, axis 11 extends through motor part 10 centered on the central axis J extended in the axial direction.Axis 11
Front side (side-Z) it is prominent from motor part 10, through intermediate member 70 and extend in pumping section 40.The front side of axis 11 is aftermentioned
Bearing 55 supports.Therefore, axis 11 is in the state of two supports.
70 > of < intermediate member
In the present embodiment, as shown in Figure 1, intermediate member 70 is with the control for controlling the work of motor part 10
The connector assembly in portion 72.
Intermediate member 70 is integrally formed by resin.Intermediate member 70 includes intermediate member main part 70a, configures in horse
Up between portion 10 and pumping section 40；And terminal part 70b, be connected with the radial outside end of intermediate member main part 70a and to
Radial outside extends.The bottom surface extended in the same plane is provided on front side of intermediate member main part 70a and terminal part 70b
70c.Bottom surface 70c is contacted and is fixed with the end face 52c of the rear side of the pump housing 52.
Intermediate member main part 70a is cylindrical shape, is had in the axial middle part of intermediate member main part 70a inside to diameter
The cricoid divider plate portions 70e that side extends.Therefore, intermediate member main part 70a than divider plate portions 70e by rear side and front side
Position has cylindric wall portion 70d.It is provided in the radially inner side than divider plate portions 70e by the part of front side of wall portion 70d
Spatial portion 70h.The central portion of divider plate portions 70e be provided with axially through through hole 70f.Axis 11 runs through the through hole
70f.The rear end of wall portion 70d is connect with the intermediate member maintaining part 13b of motor shell 13.
In the radially inner side of through hole 70f, it is configured on the axis 11 across through hole 70f by means of installing component 74
Rotation angle sensor magnet 76.Installing component 74 be ring-type, central portion have axially through through hole 74a.Axis 11
In the through hole 74a of installing component 74 and it is fixed.It is provided in the front side of installing component 74 in front openings and backward
The annular recessed portion 74b of side recess.Annular recessed portion 74b is configured to concentric circles relative to central axis J.In annular recessed portion 74b
Rotation angle sensor magnet 76 is installed.
Rotation angle sensor magnet 76 is ring-type, above has defined width radial and axial, is accommodated in cyclic annular recessed
In portion 74b.Rotation angle sensor is quadrangle with the axial cross section of magnet 76.Therefore, rotation angle sensor is with magnet 76 in axis
There is flat and band-like face 76a to two sides.Rotation angle sensor magnet 76 in the state of being installed on annular recessed portion 74b,
Face 76a on front side of it is prominent from annular recessed portion 74b.
Control unit 72 is configured in the spatial portion 70h for leaning on front side than divider plate portions 70e.Control unit 72 is in intermediate member master
It is adjacent to configuration with axis 11 in body portion 70a.Multiple portion of terminal 78 are electrically connected with control unit 72.
The one end of portion of terminal 78 is connect with the radial outside end of control unit 72, another side in terminal part 70b from
Radially inner side extends towards radial outside.Portion of terminal 78 is plate and linearly extends.In the present embodiment, there are five ends
Sub-portion 78 is set to intermediate member 70.
40 > of < pumping section
As shown in Figure 1, pumping section 40 is located at the axial side (front side) of intermediate member 70.Pumping section 40 is by motor part 10 via axis
11 are driven.Pumping section 40 has pump rotor 47 and pump case 51.Pump case 51 has the pump housing 52 and pump cover 57.Hereinafter, to each portion
Part is described in detail.
(pump housing 52)
As shown in Figure 1, the pump housing 52 is fixed on the front side (side-Z) of intermediate member 70 in the front side (side-Z) of intermediate member 70
Bottom surface 70c.The pump housing 52 has the recess portion 54 being recessed from the end face 52c of rear side (side+Z) to front side (side-Z).In recess portion 54,
Bearing 55 and seal member 59 are successively accommodated with towards front side from rear side.Bearing 55 is to from side (front side) in the axial direction of motor part 10
Axis 11 outstanding is supported.Seal member 59 is sealed to from 47 oil spill of pump rotor.
The pump housing 52 covers intermediate member 70 from front side (side-Z), thus between the pump housing 52 and intermediate member 70 in the axial direction
Bearing 55 in location indentations 54.
The pump housing 52 has along the perforative through hole 56 of central axis J.The axial ends of through hole 56 be open and for axis 11
It passes through, the opening of the rear side (side+Z) of through hole 56 is open in recess portion 54, and the opening of front side (side-Z) is in the front side of the pump housing 52
End face 52d upper opening.
Fig. 4 is comparable to the cross-sectional view of the electric oil pump 1 of the IIa-IIa arrow direction in Fig. 2.As shown in figure 4, pumping
The radial outside end of the rear side of body 52 is provided with cricoid flange part 52a.There is compartment of terrain in the circumferential on flange part 52a
It is provided with to radial outside multiple protruding portion 52b outstanding.These protruding portions 52b is configured at such position: making the pump housing 52
In the state of connecting with intermediate member 70, these protruding portions 52b and the multiple protruding portion 70g of intermediate member 70 are weighed in the axial direction
It is folded.Bolt 15 is each passed through in these protruding portions 52b, 79g.
(pump cover 57)
Fig. 2 is the plan view from the electric oil pump 1 of front side.As depicted in figs. 1 and 2, pump cover 57 is installed on the pump housing 52
Front side.There is pump cover 57 pump cover main body portion 57a and the front side pump outstanding from pump cover main body portion 57a to cover front end 57b.Pump cover
Main part 57a is installed into the end face 57a1 of rear side and contacts with the end face 52d of the front side of the pump housing 52.Pump cover main body portion 57a from
Front side is circle.Pump cover front end 57b is located at the front side of pump cover main body portion 57a and relative to central axis J from X-direction
Negative side is prominent.The end face 57b1 of the front side of pump cover front end 57b is planar.
Pump cover main body portion 57a rear side end face 57a1 on be provided with rear openings and to front side be recessed incorporating section
60.Pump cover 57 covers the pump housing 52 from front side, and incorporating section 60 thus is arranged between pump cover 57 and the pump housing 52.
Fig. 3 is comparable to the cross-sectional view of the pump cover 57 of the I-I arrow direction in Fig. 1.Fig. 5 is comparable to along Fig. 2
The cross-sectional view of the electric oil pump 1 of IIb-IIb arrow direction.
As shown in Figures 2 and 3, pump cover 57 includes inflow entrance 57c, and fuel feeding flows into；Outflux 57d, fuel feeding outflow；
Oil circuit 57e is supplied, is connected between incorporating section 60 and outflux 57d；Open and close valve 57f is set in supply oil circuit 57e, will
The oil supplied from incorporating section 60 is for being given to the side outflux 57d or cutting supply；Check-valves 57g is set to supply oil circuit 57e
In, allow oil to flow to the side outflux 57d and oil is prevented to flow to 60 side of incorporating section；And guide's oil circuit 57h is (referring to figure
5) it, connects between inflow entrance 57c and open and close valve 57f.
In the present embodiment, pump cover front end 57b is provided with inflow entrance 57c, outflux 57d, aftermentioned suction inlet
57i and outlet 57j.Inflow entrance 57c be arranged in pump cover front end 57b rear side end face 57b1 on relative to central axis
Line J is in the end of Y direction positive side.Inflow entrance 57c is viewed as circle from front side.Outflux 57d configures the Y in end face 57b1
The end of axis direction negative side.Outflux 57d is viewed as circle from front side, and diameter is bigger than the diameter of inflow entrance 57c.
It is adjacent with inflow entrance 57c, be provided with to the position that X-direction negative side is removed from pump rotor than inflow entrance 57c
The outlet 57j of 47 discharge oil.In addition, in position that is adjacent with outflux 57d, being removed than outflux 57d to X-direction negative side
Install the suction inlet 57i for being equipped with sucking oil.Inflow entrance 57c, outflux 57d, suction inlet 57i and outlet 57j for example with vehicle
Equal speed changer is connected.
As shown in figure 3, supply oil circuit 57e includes the first supply oil circuit 57e1, incorporating section 60 and open and close valve 57f are connected；
Second supply oil circuit 57e2, connects open and close valve 57f and check-valves 57g；And third supplies oil circuit 57e3, connects check-valves
57g and outflux 57d.
As shown in Figure 3 and Figure 5, open and close valve 57f includes slide valve hole portion 57f1, is located at and leans on radial outside than incorporating section 60
Position, upwardly extended in the side vertical with central axis J；Slide valve 57f2 is inserted in slide valve hole portion 57f1, can be along cunning
The extending direction of valve opening portion 57f1 is mobile；Spring members 57f3, to slide valve 57f2 to the extending direction of slide valve hole portion 57f1
Side force；And retainer 57f4, it is covered on the opening portion 57f5 of another side opening of slide valve hole portion 57f1.
Slide valve hole portion 57f1 includes major diameter hole portion 57f6, extends from the first supply oil circuit 57e1 to X-direction positive side；
And path hole portion 56f7, it is connected with major diameter hole portion 57f6, extends from the first supply oil circuit 57e1 to X-direction negative side.?
The X-direction negative side end of path hole portion 56f7 is connected with the guide's oil circuit 57h being connected to inflow entrance 57c (referring to Fig. 4).Such as figure
Shown in 4, guide's oil circuit 57h includes the first access 57h1, is connected with inflow entrance 57c and extends to rear side；Second access
57h2 is connected with the first access 57h1 and extends to X-direction negative side；And third connecting road 57h3, connect with second
Access 57h2 is connected and extends to rear side.
Wall surface 58 upper opening of the X-direction negative side end of second access 57h2 in the radial outside of pump cover 57.In wall
Inserted with plunger member in the opening portion that face 58 is open.Third connecting road 57h3 extends in the axial direction, and anterior end is connected to second
Road 57h2 connection, end face 57a1 opening of the rear end in the rear side of pump cover 57.When contacting pump cover 57 with the pump housing 52, this
The opening of the rear side of tee joint road 57h3 is closed by the end face 52d of the front side of the pump housing 52.
As shown in figure 5, slide valve 57f2 is inserted in slide valve hole portion 57f1, can be moved along the extending direction of slide valve hole portion 57f1
It is dynamic.In the present embodiment, slide valve 57f2 includes first shoulder 57f8, moves in path hole portion 57f7；Second shoulder
57f9 is moved in major diameter hole portion 57f6；And axle portion 57f10, connect first shoulder 57f8 and the second shoulder 57f9.
Second shoulder 57f9 has the hole portion 57f11 upwardly extended in the axis of axle portion 57f10 in inside.The one end of spring members 57f3
It is contacted with the bottom of the side first shoulder 57f8 of hole portion 57f11, the other end and the side first shoulder 57f8 of spring members 57f3
Opposite side retainer 57f4 contact.Therefore, slide valve 57f2 is applied to the side third connecting road 57h3 (guide's oil circuit 57h) always
Power.
In the case where not oily from guide's oil circuit 57h supply pressure, slide valve 57f2 by spring members 57f3 effect
Power and make first shoulder 57f8 close guide's oil circuit 57h, and the second shoulder 57f9 closing first supply oil circuit 57e1 and second
Supply oil circuit 57e2.On the other hand, in the case where oily from guide's oil circuit 57h supply pressure, slide valve 57f2 overcomes spring members
The active force of 57f3 and move, by first shoulder 57f8 open guide's oil circuit 57h, and the second shoulder 57f9 open first supply
The supply of oil circuit 57e1 and second oil circuit 57e2.Therefore, the first supply oil circuit 57e1 is connected to the second supply oil circuit 57e2.
On the end face 57a1 of the rear side of pump cover 57, being configured in the radial outside portion of the end face 57a1 of pump cover 57 is in ring
The seal member 61 that shape extends.In the present embodiment, as shown in figure 4, being provided with edge on the end face 52d of the front side of the pump housing 52
The cricoid groove 53 that the peripheral part of end face 52d extends.Seal member 61 is provided in groove 53.57 rear side is covered in pump
When the end face 52d of the front side of end face 57a1 and the pump housing 52 is contacted, as shown in figure 3, open and close valve 57f configuration is after being covered 57 with pump
In the region S that the seal member 61 of the end face 57a1 contact of side surrounds.Incorporating section 60 is configured in the region S of seal member 61
Side.In the present embodiment, incorporating section 60 is configured relative to central axis J in X-direction in the region S of seal member 61
Negative side.
As shown in figure 3, open and close valve 57f configuration is in the direction vertical with central axis J for leaning on radial outside than incorporating section 60
Side and along the peripheral part of region S configure.In the present embodiment, open and close valve 57f, which is located at, leans on Y direction than incorporating section 60
The position of positive side and extend along the x axis.
Check-valves 57g configuration is leaning on the other side in the direction vertical with central axis J of radial outside with incorporating section 60 simultaneously
And it is configured along the peripheral part of region S.In the present embodiment, check-valves 57g is located at the position that X-direction positive side is leaned on than incorporating section 60
It sets and extends along the y axis.In check-valves 57g, spool 57g2 is inserted in main body 57g1 in a manner of moving freely, and second supplies
It is connected to oil circuit 57e2 with the side of main body 57g1, third supply oil circuit 57e3 is connected with the other side of main body 57g1.Check-valves
57g allows oil to flow to the side outflux 57d by the movement of spool 57g2, and oil is prevented to flow to 60 side of incorporating section.?
In present embodiment, allows oil to supply the side oil circuit 57e3 to third from the second supply oil circuit 57e2 and flow, and limit the reversed of oil
Flowing.
As shown in figure 4, pump cover 57 have through hole 63, the through hole 63 extend in the axial direction and in slide valve hole portion 57f1
Another side opening opening portion 57f5 connection.In the present embodiment, through hole 63 is (including the X-axis in slide valve hole portion 57f1
Including the opening portion 57f5 of the positive side opening in direction) pump cover 57 is extended through in the axial direction.It is when through hole 63 is from rear side
Quadrangle.It is provided with and is connected to through hole 63 and from end face 57fa on the end face 57a1 of the axial other side (rear side) of pump cover 57
The housing recess 64 being recessed to front side.The buckling portion 57f12 of retainer 57f4 is accommodated in housing recess 64.
Retainer 57f4 is plate and to extend in the axial direction, retainer 57f4 towards the side with axially vertical direction
The opening portion 57f5 of 57f13 and slide valve hole portion 57f1 is arranged opposite to cover opening portion 57f5.In the present embodiment, as schemed
Shown in 4, retainer 57f4 extends in the axial direction and has side 57f13 in the two sides of X-direction.The side of X-direction negative side
The opening portion 57f5 of 57f13 and slide valve hole portion 57f1 is arranged opposite to cover opening portion 57f5.
By making retainer 57f4 through the axis of the end face 52d of the axial side of through hole 63 and the pump housing 52 and pump cover 57
It is engaged to the end face 57a1 of the other side, retainer 57f4 is fixed in pump cover 57.Have in an axial side end of retainer 57f4
The buckling portion 57f12 of oriented direction buckling intersecting axially.In the present embodiment, retainer 57f4 has in the end of rear side
The buckling portion 57f12 of oriented X-direction positive side buckling.Therefore it by making retainer 57f4 through through hole 63, and is storing
Buckling portion 57f12 is stored in recess portion 64, by the end of the axial side of the end face 57a1 of the axial other side of pump cover 57 and the pump housing 52
Face 52d engagement, retainer 57f4 are fixed in pump cover 57.The axial end side of retainer 57f4 is from the axis in through hole 63
It is prominent to the opening portion of another side opening 62.
As shown in figure 4, being provided with flange part 66 in the radial outside end of the rear side of pump cover 57.In week on flange part 66
Have upwards and is positioned apart from oriented radial outside multiple protruding portion 67 outstanding.These protruding portions 67 are configured at such position
Set: in the state of contacting pump cover 57 with the pump housing 52, the multiple protruding portion 52b of these protruding portions 67 and the pump housing 52 is in the axial direction
Overlapping.The internal thread part 68 that can be screwed togather with bolt 15 is respectively arranged in multiple protruding portion 67.By making through motor shell
13, intermediate member 70, the pump housing 52 and pump cover 57 bolt 15 screwed togather with these internal thread parts 68, can by motor shell 13, in
Between component 70, the pump housing 52 and pump cover 57 be fixed as one.
(pump rotor 47)
As shown in Figure 1, pump rotor 47 is installed on axis 11.In more detail, before pump rotor 47 is installed in axis 11
Side (side-Z).Pump rotor 47 has the internal rotor 47a being installed on axis 11 and surrounds the outer rotor of the radial outside of internal rotor 47a
47b.Internal rotor 47a is annular shape.Internal rotor 47a is the gear for having tooth in radial outer side.
Internal rotor 47a is fixed on axis 11.In more detail, the end of the front side (side-Z) of axis 11 is pressed into interior turn
The inside of sub- 47a.Internal rotor 47a is rotated around axis (direction θ) together with axis 11.Outer rotor 47b is the radial direction for surrounding internal rotor 47a
The annular shape in outside.Outer rotor 47b is the gear with teeth in radially inner side mask.
Internal rotor 47a is engaged with each other with outer rotor 47b, and by the rotation of internal rotor 47a, outer rotor 47b is rotated.
That is, rotating pump rotor 47 by the rotation of axis 11.In other words, motor part 10 and the rotary shaft having the same of pumping section 40.As a result,
It is enlarged in the axial direction to be able to suppress electric oil pump 1.
In addition, passing through the rotation of internal rotor 47a and outer rotor 47b, between internal rotor 47a and the engaging portion of outer rotor 47b
Volume can change.The region of volume reducing is pressurised zone, and the increased region of volume is negative pressure region.In the negative of pump rotor 47
The rear side (side+Z) of intermediate pressure section is configured with inhalation port.In addition, rear side (side+Z) configuration of the pressurised zone Ap in pump rotor 47
There is discharge port.Here, it is received from the oil that the suction inlet 57i (referring to Fig. 2) for being set to pump cover 57 is drawn into incorporating section 60
Volume part between internal rotor 47a and outer rotor 47b, and it is transported to pressurised zone.Then, oil passes through discharge port simultaneously
From outlet 57j (referring to Fig. 2) discharge for being set to pump cover 57.
The effect of < electric oil pump 1 and effect >
Next, the effect and effect to electric oil pump 1 are illustrated.As shown in Figure 1, working as the motor part of electric oil pump 1
When 10 driving, the axis 11 of motor part 10 rotates, and with the rotation of the internal rotor 47a of pump rotor 47, outer rotor 47b also rotates.When
When pump rotor 47 rotates, the oil sucked from the suction inlet 57i (referring to Fig. 2) of pumping section 40 moves in the incorporating section of pumping section 40 60,
It is discharged by discharge port and from outlet 57j (referring to Fig. 2).
As shown in figure 5, slide valve 57f2 is by spring members in the case where not oily from guide's oil circuit 57h supply pressure
The active force of 57f3 closes guide's oil circuit 57h by first shoulder 57f8, and by the second shoulder 57f9 closing the first supply oil circuit
The supply of 57e1 and second oil circuit 57e2.Therefore, pressure oil will not from incorporating section 60 via supply oil circuit 57e to the side outflux 57d
Flowing.On the other hand, in the case where having supplied pressure oil from guide's oil circuit 57h, slide valve 57f2 overcomes spring members 57f3's
Active force and it is mobile to X-direction positive side, guide's oil circuit 57h is opened by first shoulder 57f8, and beaten by the second shoulder 57f9
Open the supply of the first supply oil circuit 57e1 and second oil circuit 57e2.Therefore, the first supply oil circuit 57e1 and the second supply oil circuit 57e2
Connection.Therefore, pressure oil is flowed via supply oil circuit 57e to the side outflux 57d from incorporating section 60.
(1) here, it as shown in figure 5, in the electric oil pump 1 of present embodiment, is open by being covered by retainer 57f4
It is mobile to the other side can to limit slide valve 57f2 by portion 57f5.In addition, retainer 57f4 runs through through hole 63, and the pump housing 52
The end face 57a1 of axial side is engaged with the end face 52d of the axial other side of pump cover 57, and thus retainer 57f4 is fixed in pump
Cover 57.It therefore, there is no need to be able to suppress the increase of number of components for the special component for fixing retainer 57f4, so as to
Enough inhibit the enlargement of electric oil pump 1.
(2) in addition, retainer 57f4 is plate and to extend in the axial direction, retainer 57f4 towards perpendicular to axial
The side in direction and the opening portion 57f5 of slide valve hole portion 57f1 are arranged opposite, to cover opening portion 57f5.Therefore, can pass through
Retainer 57f4 easily covers opening portion 57f5.In addition, due to the end side of slide valve 57f2 and the side of retainer 57f4
Face 57f13 contact, therefore it is capable of increasing contact area, it is mobile to the other side so as to reliably limit slide valve 57f2.
(3) in addition, retainer 57f4 has buckling portion 57f12, by being accommodated in housing recess 64 in buckling portion 57f12
In the state of the end face 57a1 of the axial other side of pump cover 57 is engaged with the end face 52d of the axial side of the pump housing 52, Neng Goufang
The only danger that retainer 57f4 falls off from pump cover 57.In addition, since taking off for retainer 57f4 can be prevented by simple structure
It falls, therefore is able to suppress the enlargement of electric oil pump 1.
(4) also, the axial end side of retainer 57f4 is from the opening of another side opening of axial direction in through hole 63
Portion 62 is prominent.Therefore, the contact area of retainer 57f4 and through hole 63 can be made maximum.
(5) it in addition, seal member 61 is arranged by the end face 57a1 in the axial other side of pump cover 57, can prevent from receipts
60 oil spill of portion of receiving escapes to the danger in the outside of pump cover 57.
(6) in addition, incorporating section 60 is configured at the side in the region of seal member 61, open and close valve 57f configuration is than storage
Portion 60 leans on the side in the direction vertical with central axis J of radial outside and configures along the peripheral part of region S.Therefore, can
It effectively utilizes limited region S and incorporating section 60 and open and close valve 57f is accommodated in the S of the region.
(7) in addition, the direction vertical with central axis J of radial outside is being leaned in check-valves 57g configuration than incorporating section 60
The other side and along the peripheral part of region S configure.Therefore, can effectively utilize limited region S and by incorporating section 60, opening and closing
Valve 57f and check-valves 57g is accommodated in the S of the region.
More than, preferred embodiments of the present invention are illustrated, but the utility model is not limited to these implementations
Mode can carry out various modifications and change within the scope of its subject matter.These embodiments and modifications thereof are contained in practical new
The scope or spirit of type are contained in utility model documented by claims and its impartial range at the same time.
Claims (9)
1. a kind of electric oil pump, has:
Motor part has the axis centered on the central axis extended in the axial direction；
Pumping section is located at the axial side of the motor part, is driven through the axis to the pumping section by the motor part,
To which oil is discharged the pumping section,
The pumping section includes
Pump rotor is installed in from the motor part in the axial direction the side axis outstanding；And
Pump case has the incorporating section for storing the pump rotor,
The pump case includes
The pump housing is installed on the axial side of the motor part；And
Pump cover, is installed on the axial side of the pump housing,
The pump cover includes
Inflow entrance enters for the oil stream；
Outflux goes out for the oil stream；
Oil circuit is supplied, is connected between the incorporating section and the outflux；
Open and close valve is set in the supply oil circuit, by the oil supplied from the incorporating section for being given to the outflux
Side or cutting supply；
Check-valves is set in the supply oil circuit, allows the oil to flow to the outflux side, and prevent the oil
It is flowed to the incorporating section side；And
Guide's oil circuit connects between the inflow entrance and the open and close valve,
The open and close valve includes
Slide valve hole portion, be located at than the incorporating section lean on radial outside position, on the direction of the central axis upright
Extend；
Slide valve is inserted in the slide valve hole portion, can be moved along the extending direction of the slide valve hole portion；
Spring members exert a force to the slide valve to the side of the extending direction of the slide valve hole portion；And
Retainer is covered on the opening portion of another side opening of the slide valve hole portion,
Pump cover has a through hole, which extends in the axial direction and open with another side opening in the slide valve hole portion
Oral area connection,
The retainer runs through the through hole, and the axial direction of the pump body end surface of the axial side of the pump housing and the pump cover
The pump cover end joined of the other side, so that the retainer is fixed in the pump cover.
2. electric oil pump according to claim 1, which is characterized in that
The retainer is plate and to extend in the axial direction, the retainer towards perpendicular to axially direction side and institute
The opening portion for stating slide valve hole portion is arranged opposite, and the retainer covers the opening portion.
3. electric oil pump according to claim 1, which is characterized in that
The retainer has the buckling portion to direction buckling intersecting axially in an axial side end for the retainer,
Have on the pump cover end face of the axial other side of the pump cover and is connected to the through hole and stores the buckling
The housing recess in portion,
The retainer runs through the through hole, and the buckling portion is stored in the housing recess, by the pump cover
The pump body end surface of the axial side of the pump cover end face and pump housing of the axial other side engages, thus the retainer
It is fixed in the pump cover.
4. electric oil pump according to claim 2, which is characterized in that
The retainer has the buckling portion to direction buckling intersecting axially in an axial side end for the retainer,
Have on the pump cover end face of the axial other side of the pump cover and is connected to the through hole and stores the buckling
The housing recess in portion,
The retainer runs through the through hole, and the buckling portion is stored in the housing recess, by the pump cover
The pump body end surface of the axial side of the pump cover end face and pump housing of the axial other side engages, thus the retainer
It is fixed in the pump cover.
5. electric oil pump according to claim 3, which is characterized in that
The axial end side of the retainer is prominent from the opening portion of another side opening of axial direction in the through hole.
6. electric oil pump according to claim 4, which is characterized in that
The axial end side of the retainer is prominent from the opening portion of another side opening of axial direction in the through hole.
7. according to claim 1 to electric oil pump described in any one in 6, which is characterized in that
On the pump cover end face of the axial other side of the pump cover, the radial outside portion in pump cover end face is configured with
The seal member annularly extended,
The open and close valve configuration is in the region surrounded by the seal member.
8. electric oil pump according to claim 7, which is characterized in that
The incorporating section is configured at the side in the region of the seal member,
Open and close valve configuration than the incorporating section by radial outside with the direction of the central axis upright side simultaneously
And it is configured along the peripheral part in the region.
9. electric oil pump according to claim 8, which is characterized in that
The check valve configuration is in the other side with the direction of the central axis upright for leaning on radial outside than the incorporating section
And it is configured along the peripheral part in the region.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201762555784P | 2017-09-08 | 2017-09-08 | |
| US62/555,784 | 2017-09-08 | ||
| JP2017-190742 | 2017-09-29 | ||
| JP2017190742A JP6922623B2 (en) | 2017-09-08 | 2017-09-29 | Electric oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208803993U true CN208803993U (en) | 2019-04-30 |
Family
ID=65905902
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821455903.9U Active CN208803993U (en) | 2017-09-08 | 2018-09-06 | Electric oil pump |
| CN201821460201.XU Active CN209088742U (en) | 2017-09-08 | 2018-09-06 | Electric oil pump |
| CN201821459451.1U Expired - Fee Related CN208734533U (en) | 2017-09-08 | 2018-09-06 | Electric oil pump |
| CN201821456210.1U Active CN209088741U (en) | 2017-09-08 | 2018-09-06 | Motor |
Family Applications After (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821460201.XU Active CN209088742U (en) | 2017-09-08 | 2018-09-06 | Electric oil pump |
| CN201821459451.1U Expired - Fee Related CN208734533U (en) | 2017-09-08 | 2018-09-06 | Electric oil pump |
| CN201821456210.1U Active CN209088741U (en) | 2017-09-08 | 2018-09-06 | Motor |
Country Status (2)
| Country | Link |
|---|---|
| JP (4) | JP2019050710A (en) |
| CN (4) | CN208803993U (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3985815B2 (en) * | 2004-10-25 | 2007-10-03 | 三菱電機株式会社 | Electric actuator |
| JP4843286B2 (en) * | 2005-09-29 | 2011-12-21 | 株式会社ミツバ | Electric motor and method for manufacturing the same |
| JP2007292005A (en) * | 2006-04-27 | 2007-11-08 | Hitachi Ltd | Pump device and power steering device |
| JP4810494B2 (en) * | 2007-04-18 | 2011-11-09 | トヨタ自動車株式会社 | Manufacturing method of internal gear type electric oil pump |
| JP4901661B2 (en) * | 2007-09-13 | 2012-03-21 | 日立オートモティブシステムズ株式会社 | Pump device and power steering device to which this pump device is applied |
| US8398381B1 (en) * | 2009-09-24 | 2013-03-19 | Laverne Schumann | Low friction, high flow pump |
| US8535030B2 (en) * | 2010-02-17 | 2013-09-17 | Kelly Hee Yu Chua | Gerotor hydraulic pump with fluid actuated vanes |
| JP2016050574A (en) * | 2014-09-02 | 2016-04-11 | Ｋｙｂ株式会社 | Electric vane pump |
| JP6405925B2 (en) * | 2014-11-14 | 2018-10-17 | 日産自動車株式会社 | Rotating electric machine cooling pump |
| JP2017057835A (en) * | 2015-09-18 | 2017-03-23 | Ｋｙｂ株式会社 | Cartridge type vane pump |
-
2017
- 2017-09-29 JP JP2017190300A patent/JP2019050710A/en active Pending
- 2017-09-29 JP JP2017190780A patent/JP2019050711A/en active Pending
- 2017-09-29 JP JP2017190742A patent/JP6922623B2/en active Active
- 2017-09-29 JP JP2017190199A patent/JP6981152B2/en active Active
-
2018
- 2018-09-06 CN CN201821455903.9U patent/CN208803993U/en active Active
- 2018-09-06 CN CN201821460201.XU patent/CN209088742U/en active Active
- 2018-09-06 CN CN201821459451.1U patent/CN208734533U/en not_active Expired - Fee Related
- 2018-09-06 CN CN201821456210.1U patent/CN209088741U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019050711A (en) | 2019-03-28 |
| CN209088742U (en) | 2019-07-09 |
| JP2019049250A (en) | 2019-03-28 |
| JP2019049251A (en) | 2019-03-28 |
| JP6922623B2 (en) | 2021-08-18 |
| CN209088741U (en) | 2019-07-09 |
| JP6981152B2 (en) | 2021-12-15 |
| CN208734533U (en) | 2019-04-12 |
| JP2019050710A (en) | 2019-03-28 |
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