CN209088741U - Motor - Google Patents

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Publication number
CN209088741U
CN209088741U CN201821456210.1U CN201821456210U CN209088741U CN 209088741 U CN209088741 U CN 209088741U CN 201821456210 U CN201821456210 U CN 201821456210U CN 209088741 U CN209088741 U CN 209088741U
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CN
China
Prior art keywords
axis
control unit
motor
rotation angle
terminal
Prior art date
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Active
Application number
CN201821456210.1U
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Chinese (zh)
Inventor
小林喜幸
樋口孔二
桥本裕
永井友三
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Nidec Powertrain Systems Corp
Original Assignee
Nidec Tosok Corp
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Publication of CN209088741U publication Critical patent/CN209088741U/en
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  • 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 motor, in the motor with circuit board, is able to suppress enlargement radially.Motor (95) includes motor part (10), with axis (11);And control unit (72), the work of motor part (10) is controlled.Motor part (10) has the flange part (97) of the opening portion of rotor (20), stator (22), the motor shell (13) for storing the rotor (20) and the stator (22) and the front openings for being covered on motor shell (13).Intermediate member (70) are configured between motor shell (13) and flange part (97).Control unit (72) configuration is in intermediate member (70).Control unit (72) configuration is in the region R be overlapped in the axial direction with motor shell (13) and pump case (51) between motor shell (13) and pump case (51).

Description

Motor
Technical field
The utility model relates to motors.
Background technique
In motor, such as there is known the electric oil pumps constructed as follows like that documented by patent document 1: motor part and Pumping section integration, and there is the circuit board installing rotation angle sensor etc. in pumping section side and being driven to motor part.The electricity Dynamic oil pump is configured with pumping section in the axial side of motor part, and the axis extended from motor part runs through the pump housing of pumping section.In the axis of the pump housing An axially side opening and the incorporating section that the other side is recessed in the axial direction in the pump housing are provided with to the end face of side.It is received in incorporating section Receiving has pump rotor.
The radial outside of pumping section and motor part is provided with the driver portion of storage circuit board.Circuit board is in driver portion Extend from pumping section towards radial outside.It is electrically connected with the portion of terminal extended in the axial direction on circuit boards.
Patent document 1: Japanese Unexamined Patent Publication 2015-163029 bulletin
The electric oil pump as documented by patent document 1 is configured with circuit board in the radial outside of pumping section and motor part, because The construction enlargement radially of this electric oil pump.Thus, for example having can in the case where electric oil pump is equipped on speed changer It can be not easy to be carried.
Utility model content
The purpose of this utility model is that providing in the motor with circuit board and being able to suppress radial enlargement Motor.
First utility model of the illustration of the application is a kind of motor, which includes motor part, is had in axial direction Axis centered on the central axis of upper extension;And control unit, the work of the motor part is controlled, the motor part Rotor is included, the axial other side of the axis is fixed in;Stator is located at the radial outside of the rotor;Bottomed tube Motor shell, store the rotor and the stator, there is bottom in the axial other side;And flange part, it is covered on institute The opening portion of an axial side opening for motor shell is stated, the control unit is configured between the motor shell and the flange part In the region be overlapped in the axial direction with the motor shell and the flange part.
It is capable of providing in the motor with circuit board according to the first utility model of the illustration of the application and can inhibit diameter The motor of upward enlargement.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the electric oil pump of first embodiment.
Fig. 2 is the sectional block diagram that the electric oil pump of record of motor part is omitted.
Fig. 3 is comparable to the cross-sectional view of the intermediate member of the IIa-IIa arrow direction in Fig. 2.
Fig. 4 is comparable to the cross-sectional view of the intermediate member of the IIb-IIb arrow direction in Fig. 2.
Fig. 5 is comparable to the cross-sectional view of the intermediate member of the IIc-IIc arrow direction in Fig. 2.
Fig. 6 is comparable to the cross-sectional view of the intermediate member of the IId-IId arrow direction in Fig. 2.
Fig. 7 is comparable to the cross-sectional view of the intermediate member of the IIe-IIe arrow direction in Fig. 2.
Fig. 8 is the cross-sectional view of the motor of second embodiment.
Label declaration
1: electric oil pump;10: motor part;11: axis;11a: outer peripheral surface;13: motor shell;13b1: end;13d: bottom; 13f: insertion hole;20: rotor;22: stator;40: pumping section;47: pump rotor;51: pump case;52c: end face;55: bearing;59: close Seal component;60: incorporating section;70: intermediate member;70c: bottom surface;70d: wall portion;72: control unit;72a1: notch section;72a2: it lacks Mouth face;72a4,74c: face;72b: rotation angle sensor;74: installing component;76: rotation angle sensor magnet;78: terminal Portion;85: fixation member;85a: bolt;90: aerial lug;J: central axis;R: region;S: gap.
Specific embodiment
Hereinafter, being illustrated referring to motor of the attached drawing to the embodiments of the present invention.In the present embodiment, with convex Edge has the motor of pumping section, is illustrated for electric oil pump.In addition, in the following figures, it is each for ease of understanding 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 electronic oil shown in Fig. 1 Parallel direction, the i.e. left and right directions of Fig. 1 of the width direction of pump 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.In the present embodiment, as homework department 98 to pump It is illustrated for portion 40.As shown in Figure 1, the electric oil pump 1 of present embodiment has motor part 10, pumping section 40, control unit 72 And the axis 11 along the central axis J configuration extended in the axial direction.Pumping section 40 is located at the axial side (front side) of motor part 10, It is driven that oil is discharged by means of axis 11 by motor part 10.Control unit 72 configuration be located at motor part 10 motor shell 13 with In intermediate member 70 between the pump case 51 of pumping section 40, the work of motor part 10 is controlled.Hereinafter, according to each constituting portion Part is described in detail.
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.Motor part 10 is configured in stator maintaining part 13a Axis 11, rotor 20 and stator 22.The lateral surface of stator 22, i.e., the lateral surface of aftermentioned core-back 22a and stator are kept The inner peripheral surface 13a1 of portion 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) connect with wall portion 70d.In the present embodiment, in the inner surface of end 13b1 inserted in Between component 70 rear side wall portion 70d, end 13b1 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 iron On the circumferentially lateral surface in (direction θ) of core 20a.Rotor core 20a and rotor magnet 20b rotates together with axis 11.In addition, Rotor 20 is also possible to the embedding magnet type for having permanent magnet in the embedment of the inside of rotor 20.Rotor 20 is set to by permanent magnet Surface magnet on surface is compared, and the rotor 20 of embedding magnet type can reduce the danger that magnet is removed by centrifugal force, separately Outside, reluctance torque can be 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.
72 > of < control unit
Fig. 2 is the sectional block diagram of the electric oil pump 1 that motor part 10 is omitted of first embodiment.Fig. 3 is comparable to The radial cross-sectional view of the intermediate member 70 of IIa-IIa arrow direction in Fig. 2.Fig. 4 is comparable to the IIb- in Fig. 2 The radial cross-sectional view of the intermediate member 70 of IIb arrow direction.Fig. 5 is comparable to the IIc-IIc arrow direction in Fig. 2 The radial cross-sectional view of intermediate member 70.Fig. 6 is comparable to the diameter of the intermediate member 70 of the IId-IId arrow direction in Fig. 2 To cross-sectional view.Fig. 7 is comparable to the radial cross-sectional view of the intermediate member 70 of the IIe-IIe arrow direction in Fig. 2.
As depicted in figs. 1 and 2, control unit 72 is configured in intermediate member 70, with the circuit board 72a of plate and right The rotation angle sensor 72b that the rotation angle of axis 11 is detected.Control unit 72 configuration between motor shell 13 and pump case 51 with In the region R that motor shell 13 and pump case 51 are overlapped in the axial direction.In the present embodiment, the configuration of control unit 72 is in intermediate member 70 It is interior, it configures in the region R be overlapped in the axial direction with motor shell 13 and pump case 51.About circuit board 72a, rotation angle sensor The detailed content of 72b is illustrated later.
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.
As depicted in figs. 1 and 2, intermediate member main part 70a is cylindrical shape, in the axial direction of intermediate member main part 70a Between portion there is the cricoid divider plate portions 70e that extends to radially inner side.Therefore, intermediate member main part 70a is than divider plate portions 70e has cylindric wall portion 70d by the position of rear side and front side.In the radial direction than divider plate portions 70e by the wall portion 70d of front side Inside is provided with spatial portion 70h.The central portion of divider plate portions 70e be provided with axially through through hole 70f.Axis 11 runs through 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, by means of installing component 74 and configured with rotation on the axis 11 for passing through through hole Rotary angle transmitter magnet 76.Installing component 74 be ring-type, central portion have axially through through hole 74a.Axis 11 passes through It wears through hole 74a and is fixed.The front side of installing component 74 be provided with front openings and to rear side be recessed annular recessed portion 74b.Annular recessed portion 74b is configured to concentric circles relative to central axis J.Rotation angle sensing is installed in annular recessed portion 74b Device magnet 76.
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.In the state of being installed on annular recessed portion 74b, rotation angle sensor magnet 76 Front side face 76a it is prominent from annular recessed portion 74b.
As shown in figure 4, the Configuration Control Board 72 in the spatial portion 70h for leaning on front side than divider plate portions 70e.Control unit 72 is in Between be adjacent to configuration with axis 11 in article body portion 70a.Multiple portion of terminal 78 are electrically connected on control unit 72.
As shown in Figure 4 and Figure 5, portion of terminal 78 is configured with one end in the position than wall portion 70d by radially inner side, the other end Portion's configuration extends radially in the mode than wall portion 70d by the position of radial outside.In the present embodiment, portion of terminal 78 One end is connect with the radial outside end of control unit 72, and another side is outside from radially inner side towards diameter in terminal part 70b Side extends.Portion of terminal 78 is plate and linearly extends.Portion of terminal 78 includes terminal body 78a, in terminal part Extend in 70b;Control unit side sub-portion 78b is connected, forward lateroflexion Qu Yan with the radially inner side end of terminal body 78a It stretches and is electrically connected with control unit 72;And aerial lug side sub-portion 78c (referring to Fig. 2), the diameter with terminal body 78a Outside side end is connected, and lateroflexion Qu Yanshen and (Fig. 2 reference) is electrically connected with aerial lug backward.In the present embodiment, have Five portion of terminal 78 are set on intermediate member 70.
As shown in fig. 7, being configured with multiple busbars 80 by the position of rear side than multiple portion of terminal 78.Busbar 80 will The coil-end and aerial lug of motor part 10 are electrically connected.In the present embodiment, 3 busbars 80 are configured at intermediate member In 70.
(busbar 80)
As shown in Figure 3 and Figure 7, busbar 80 is made of metal material, for example, to copper implement it is tin plating after tin-coated copper. Busbar 80 configures on the face 70e1 of the rear side of divider plate portions 70e.Busbar 80 includes the first busbar 81, with axis 11 It is configured adjacently;Second busbar 82 is configured in the position for leaning on Y direction positive side than axis 11;And third busbar 83, match It sets in the position for leaning on Y direction negative side than axis 11.
The coil sides that first busbar 81 has busbar main part 81a, is connected with the one end of busbar main part 81a The portion of terminal 81b and aerial lug side sub-portion 81c being connected with the another side of busbar main part 81a.
The coil sides that second busbar 82 has busbar main part 82a, is connected with the one end of busbar main part 82a Portion of terminal 82b, the aerial lug side sub-portion 82c being connected with the another side of busbar main part 82a.
The coil sides that third busbar 83 has busbar main part 83a, is connected with the one end of busbar main part 83a Portion of terminal 83b, the aerial lug side sub-portion 83c being connected with the another side of busbar main part 83a.
The busbar main part 81a of first busbar 81 is to lean on by the position of X-direction side with than axis 11 than axis 11 The arc-shaped extended in the circumferential between the position of the X-direction other side around axis 11.In the X-axis side of busbar main part 81a There is the extension 81a1 extended to radial outside to the end of the other side.The end of coil sides portion of terminal 81b and extension 81a1 End is connected.Extension 81a1 has run through in the first hole portion 70e2 for being set to divider plate portions 70e, configures in spatial portion 70h Coil sides portion of terminal 81b.The ratio axis 11 that first hole portion 70e2 is set to divider plate portions 70e leans on the position of X-direction negative side.Separately Outside, the protruding portion 81a2 extended to radial outside is provided in the middle part of the extending direction of busbar main part 81a.Outside connects Device side sub-portion 81c is met to extend from the radially inner side of terminal part 70b to radial outside.The diameter of aerial lug side sub-portion 81c Outside side section lateroflexion Qu Yanshen backward.
The busbar main part 82a of second busbar 82 is located at the busbar main part 81a than the first busbar 81 by Y The position of axis direction positive side, for than axis 11 by X-direction side position with than axis 11 by the X-direction other side position it Between the arc-shaped that extends in the circumferential around axis 11.Have in the end of the X-direction other side of busbar main part 82a to diameter The extension 82a1 extended outward.Coil sides portion of terminal 82b is connected with the terminal part of extension 82a1.Extension 782a1 is passed through It has worn in the second hole portion 70e3 for being set to divider plate portions 70e, coil sides portion of terminal 82b is configured in spatial portion 70h.Second Ratio the first hole portion 70e2 that hole portion 70e3 is set to divider plate portions 70e leans on the position of Y direction positive side.In addition, in busbar master The middle part of the extending direction of body portion 82a is provided with the protruding portion 82a2 extended to radially inner side.Aerial lug side sub-portion 82c prolongs from the radially inner side of terminal part 70b to the adjacent position of the aerial lug side side sub-portion 81c of the first busbar 81 It stretches, extends to radial outside buckling and to radial outside.The radial outside portion of aerial lug side sub-portion 82c lateroflexion backward Qu Yanshen.
The busbar main part 83a of third busbar 83 is located at the position that Y direction negative side is leaned on than axis 11, for than axis 11 The circle that axis 11 extends in the circumferential is bypassed between the position of the X-direction other side by the position of X-direction side and than axis 11 Arcuation.There is the extension 83a1 extended to radial outside in the end of the X-direction other side of busbar main part 83a.Line Circle side sub-portion 83b is connect with the terminal part of extension 83a1.Extension 83a1, which has run through, is set to the of divider plate portions 70e In three hole portion 70e4, coil sides portion of terminal 83b is configured in spatial portion 70h.Third hole portion 70e4 is set to divider plate portions 70e Ratio the first hole portion 70e2 lean on Y direction negative side position.In addition, the middle part of the extending direction in busbar main part 83a It is provided with the protruding portion 83a3 extended to radially inner side.Aerial lug side sub-portion 83c from the radially inner side of terminal part 70b to The adjacent position of the aerial lug side side sub-portion 81c of first busbar 81 extends, to radial outside buckling and outside to diameter Side extends.The radial outside portion of aerial lug side sub-portion 83c lateroflexion Qu Yanshen backward.
In the present embodiment, the case where coil 22b for being motor part 10 is three-phase windings, in order to will be with U phase, V phase, W Any one corresponding coil-end and busbar 80 in phase connect, and coil sides portion of terminal 81b, 82b, 83b is in axis 11 By with configuring at three in a manner of equally spaced in the circumferential direction of radial outside.
As shown in fig. 7, in the busbar main part 81a of the first busbar 81 and the busbar main part of the second busbar 82 Between 82a, the position of X-direction positive side is leaned in the ratio axis 11 of divider plate portions 70e, is provided with the first internal thread part 70e5.In addition, Between the busbar main part 83a and axis 11 of third busbar 83, in the central axis J of the axis 11 of divider plate portions 70e and Position between one internal thread part 70e5 is provided with the second internal thread part 70e6.Spiral shell in the first internal thread part 70e5 and second Line portion 70e6 is used in fixed control unit 72.
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 by motor part 10 by It is driven in axis 11.Pumping section 40 has pump rotor 47 and pump case 51.In the present embodiment, pump case 51 has 52 He of the pump housing Pump cover 57.Hereinafter, being described in detail to each component.
(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 on.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 It is interior, bearing 55 and seal member 59 are successively accommodated with towards front side from rear side.Bearing 55 is to from motor part 10, side is (preceding in the axial direction Side) axis 11 outstanding 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 is opening, and axis 11 is worn Through hole 56 is crossed, 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 pump housing 52 The end face 52d upper opening of front side.
As shown in figure 3, being provided with cricoid flange part 52a in the radial outside end of the rear side of the pump housing 52.In flange part It is provided at spaced intervals in the circumferential on 52a to radial outside multiple protruding portion 52b outstanding.These protruding portions 52b configuration In such position: in the state of connecting the pump housing 52 with intermediate member 70, these protruding portions 52b is more with intermediate member 70 A protruding portion 70g (referring to Fig. 4) is overlapped in the axial direction.Multiple protruding portion 52b is run through by bolt 15 respectively.
(pump cover 57)
As shown in Figure 1, pump cover 57 is installed on the front side of the pump housing 52.Pump cover 57 have 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.In this implementation In mode, pump cover 57 has the planar end face 57a contacted with the end face 52d of the front side of the pump housing 52 in rear side.In incorporating section Pump rotor 47 is configured in 60.
As shown in Fig. 2, being provided with flange part (not shown) in the radial outside end of the rear side of pump cover 57.On flange part It is provided at spaced intervals in the circumferential to radial outside multiple protruding portion outstanding (not shown).These protruding portions are configured at this The position of sample: in the state of contacting pump cover 57 with the pump housing 52, the multiple protruding portion 52b of these protruding portions and the pump housing 52 exists It is overlapped in axial direction.The internal thread part (not shown) that can be screwed togather with bolt 15 is respectively arranged in multiple protruding portion.By making It is screwed togather through the bolt of motor shell 13, intermediate member 70, the pump housing 52 and pump cover 57 and these internal thread parts, it can be by motor shell 13, intermediate member 70, the pump housing 52 and 57 one of pump cover are fixed.
(pump rotor 47)
As depicted in figs. 1 and 2, pump rotor 47 is installed on axis 11.In more detail, pump rotor 47 is installed on axis 11 Front side (side-Z).Pump rotor 47 has the internal rotor 47a being installed on axis 11 and surrounds the outer of the radial outside of internal rotor 47a Rotor 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, in the front side (- Z of the inside of internal rotor 47a indentation axis 11 Side) end.Internal rotor 47a is rotated around axis (direction θ) together with axis 11.Outer rotor 47b is that the diameter of encirclement internal rotor 47a is outside The annular shape of side.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 accommodated in from the oil that the suction inlet (not shown) for being set to pump cover 57 is drawn into incorporating section 60 interior Volume part between rotor 47a and outer rotor 47b, and it is transported to pressurised zone.Then, oil pass through discharge port and from setting It is placed in the outlet discharge (not shown) of pump cover 57.
In this way, pump case 51 is included to from the bearing 55 that side axis 11 outstanding is supported in the axial direction of motor part 10 and right The seal member 59 being sealed from 47 oil spill of pump rotor.In addition, intermediate member 70 includes control unit 72, equipped with The rotation angle sensor 72b that the rotation angle of axis 11 is detected;Rotation angle sensor magnet 76, is installed on axis 11 On, rotation angle sensor 72b is using the rotation angle sensor with magnet 76 come the rotation angle of detection axis 11;And portion of terminal 78, One end portion is located at the axial other side (rear side) of control unit 72 and the other end extends to radial outside, one end and control Portion 72 is electrically connected.In addition, seal member 59, bearing 55, control unit 72, rotation angle sensor magnet 76, stator 22 are from pumping section 40 sides are configured in order towards 10 side of motor part.
72 > of < control unit
In the present embodiment, as shown in Figure 4 and Figure 6, control unit 72 has circuit board 72a and is equipped on circuit board 72a On rotation angle sensor 72b.The rectangle that circuit board 72a extends in the Y-axis direction when from front side.Control unit 72 By means of portion of terminal 78 by with outstanding in a manner of being electrically connected the one end of portion of terminal 78 with the radial outside end of control unit 72 The bearing of arm bearing state.In the present embodiment, multiple portion of terminal 78 are electrically connected in the radial outside end of circuit board 72a. Therefore, circuit board 72a is supported to using 78 side of portion of terminal as the cantilever support state of fulcrum.
Control unit 72 has in the end of the opposite side for the side that portion of terminal 78 is connect with control unit 72 along the periphery of axis 11 The notch section 72a1 of the circumferential skewing in face.In the present embodiment, there is notch section in the end of the radially inner side of circuit board 72a 72a1.Notch section 72a1 has the notch face 72a2 of the circumferential skewing of the outer peripheral surface along axis 11 (referring to Fig. 2).Control unit 72 is matched Being set between notch face 72a2 and the outer peripheral surface of axis 11 has gap.In the present embodiment, circuit board 72a is configured to There is gap between notch face 72a2 and the outer peripheral surface of axis 11.Therefore, in the rotation of axis 11, axis 11 will not be with circuit board 72a Contact.
The rotation angle sensor 72b of control unit 72 is outside by diameter in the notch face 72a2 than notch section 72a1 of control unit 72 Side is configured on the opposed face 72a4 of magnet 76 along the bending direction of notch face 72a2 with rotation angle sensor.In this embodiment party In formula, rotation angle sensor 72b circuit board 72a ratio notch face 72a2 by radial outside and rotation angle sensor magnet It is configured on the face 72a4 of 76 opposed rear sides along the bending direction of notch face 72a2.In addition, rotation angle sensor magnet 76 Radial position is configured to identical relative to radial position (r1) of axis 11 as rotation angle sensor 72b.
As shown in Figure 2 and Figure 6, control unit 72 configures the ratio rotation angle sensor magnet between wall portion 70d and axis 11 76 by the position of axial side (front side).In the present embodiment, circuit board 72a is configured at spatial portion 70h with such state: Notch face 72a2 is adjacent with the outer peripheral surface of axis 11, and the radially inner side end of circuit board 72a is located at than rotation angle sensor magnet 76 lean on the position of front side.
Circuit board 72a is in unstable shape due to being supported by multiple portion of terminal 78 with cantilever support state State.However, as shown in figure 4, being arranged on the face of the front side of divider plate portions 70e in the position be overlapped in the axial direction with circuit board There are multiple protrusions 71.Protrusion 71 be it is cylindric, have the large-diameter portion 71a that extends from the face of the front side of divider plate portions 70e with Extend from the end of the front side of large-diameter portion 71a to front side and the diameter small diameter portion 71b smaller than large-diameter portion 71a.On the other hand, in electricity On the plate 72a of road, the position be overlapped in the axial direction with the small diameter portion of protrusion be provided with axially through hole portion 72a3.Path Portion 71b runs through hole portion 72a3, and circuit board 72a is contacted with the stage portion between small diameter portion 71b and large-diameter portion 71a.
Protrusion 71 configure in following position: the opposite side for the side that portion of terminal 78 is connect with control unit 72 and terminal A side position on the vertical direction of the extending direction in portion 78;The side being connect with portion of terminal 78 with control unit 72 and terminal Another side position on the vertical direction of the extending direction in portion 78.In the present embodiment, the configuration of protrusion 71 is in following position: The Y direction positive side of circuit board 72a and the Y direction negative side of the position of the negative side of X-direction and circuit board 72a and than aforementioned The position of X-direction positive side is leaned in position.That is, these positions are located at diagonal position relative to the center of circuit board 72a.
Control unit 72 is fixed on intermediate member 70 by means of fixation member 85.Fixation member 85 is bolt 85a.Fixation member 85 configurations are in following position: the opposite side for the side that portion of terminal 78 is connect with control unit 72 and portion of terminal 78 extending direction A side position on vertical direction;The side being connect with portion of terminal 78 with control unit 72 and portion of terminal 78 extending direction Another side position on vertical direction.In the present embodiment, bolt 85a configuration is in following position: the Y-axis of circuit board 72a The Y direction negative side of the position and circuit board 72a of direction positive side and X-direction positive side and more negative by X-direction than aforementioned location The position of side.That is, these positions are located at diagonal position relative to the center of circuit board 72a.In addition, being set to divider plate portions 70e On the first internal thread part 70e5 and the second internal thread part 70e6 (referring to Fig. 7) be configured in the allocation position pair with bolt 85a The position set.Therefore, by by bolt 85a run through circuit board 72a hole portion 72a3, and with the first internal thread part 70e5 and second Internal thread part 70e6 is screwed togather, and can be fixed in the state that circuit board 72a and the stage portion of protrusion 71 are contacted.Therefore, Control unit 72 is with secured and be fixed in intermediate member 70 in the state of stablizing.
In addition, as shown in fig. 7, the first internal thread part 70e5 is located at the confluence of the first busbar 81 on divider plate portions 70e Position between main part 81a and the busbar main part 82a of the second busbar 82, therefore the first internal thread part 70e5 will not It is Chong Die with the first busbar 81 and the second busbar 82.In addition, the second internal thread part 70e6 is located at the third on divider plate portions 70e Position between the busbar main part 83a and axis 11 of busbar 83, therefore the second internal thread part 70e6 will not converge with third Item 83 is overlapped.
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 (referring to Fig. 7) of pumping section 40 moves in the incorporating section of pumping section 40 60, passes through Discharge port and from outlet (referring to Fig. 7) discharge.
(1) here, the control unit of the electric oil pump 1 of present embodiment configures between motor shell 13 and pump case 51 and horse In the region R being overlapped in the axial direction up to shell 13 and pump case 51.Therefore, the diameter in motor shell 13 and pump case 51 is configured with control unit 72 Outward the case where, is compared, and the enlargement radially of electric oil pump 1 is able to suppress.
(2) in addition, being configured with intermediate member 70 between motor shell 13 and pump case 51, control unit 72 is configured at intermediate member In 70.Even if being also able to suppress in the case where intermediate member 70 is set to electric oil pump 1 because control unit 72 leads to electric oil pump 1 is enlarged radially.
(3) in addition, oil can be made to be not easy by configuring bearing 55 in the side than seal member 59 far from pumping section 40 Enter bearing 55.In addition, by by control unit 72 configuration than bearing 55 lean on 10 side of motor part position, the one of portion of terminal 78 End is located at the axial other side of control unit 72 and the other end extends to radial outside and one end is electrically connected with control unit 72, Thus portion of terminal 78 will not be contacted with bearing 55, and can be easy to carry out the wiring of portion of terminal and control unit 72.
(4) also, the radial position of rotation angle sensor magnet is configured to and rotation angle sensor is relative to axis Radial position is identical, therefore can be improved rotation angle sensor to the detection accuracy of the rotation angle of axis.
(5) in addition, ratio rotation angle sensor of the configuration of control unit 72 between wall portion 70d and axis 11 leans on axis with magnet 76 To the position of side.Therefore, it is being configured by wall portion 70d, axis 11 and rotation angle sensor in 76 area encompassed of magnet Control unit 72.Therefore, the space in intermediate member 70 can be effectively utilized.In addition, since control unit 72 is axially disposed Nonoverlapping position, therefore the enlargement being able to suppress in the axial direction of electric oil pump 1.
(6) in addition, control unit 72 is fixed on intermediate member 70 by means of fixation member 85.It therefore, can be by control unit 72 are firmly fixed at intermediate member 70.
(7) in addition, fixation member 85 is bolt 85a.Therefore, it can easily be done and control unit 72 be fixed on middle part The operation of part 70.
(8) also, the configuration of fixation member 85 is in following position: the opposite side for the side that portion of terminal 78 is connect with control unit 72 , a side position on vertical with the extending direction of portion of terminal direction;The side being connect with portion of terminal 78 with control unit 72 , another side position on vertical with the extending direction of portion of terminal 78 direction.That is, the configuration of fixation member 85 is in control unit 72 Diagonal position.It therefore, also can be by control unit 72 with steady even if in the state that control unit 72 is by 78 cantilever support of portion of terminal Fixed state is fixed.
(9) in addition, control unit 72 has in the end of the opposite side for the side that portion of terminal 78 is connect with control unit 72 along axis The notch section 72a1 of the circumferential skewing of 11 outer peripheral surface.Control unit 72 can be configured in a manner of it will not contact with axis 11 in centre In component 70.
(10) in addition, the rotation angle sensor 72b of control unit 72 in the notch face 72a2 than notch section 72a1 far from axis 11 Side configured on the opposed face of magnet 76 along the bending direction of notch face 72a2 with rotation angle sensor.Therefore, can The precision of the position detection of rotation angle sensor magnet 76 is improved by rotation angle sensor 72b.
[second embodiment]
Next, being illustrated to the motor 95 of the second embodiment of the utility model.In this second embodiment, only Difference from above-mentioned first embodiment is illustrated, form part same as the first embodiment is marked identical Label and omit the description.
Fig. 8 is the cross-sectional view of the motor 95 of second embodiment.In the first embodiment, in intermediate member 70 The case where pumping section 40 are arranged on the end face 52c of front side is illustrated, and the motor 95 of second embodiment is in intermediate member 70 Front side end face 52c on be provided with flange part 97.As shown in figure 8, flange part 97 is plate, from front side Shi Weiyuan Shape.Flange part 97 central portion be provided with axially through through hole 97a.Axis 11 has run through through hole 97a.
Be provided on the end face 97b of the rear side of flange part 97 rear openings and to front side be recessed recess portion 97c.Recess portion 97c is circle when from rear side.Recess portion 97c is coaxially disposed with through hole 97a.Bearing 55 is stored in recess portion 97c.It passes through The rear side of through-hole 97a is in recess portion 97c split shed, the front openings of the front side of through hole 97a in flange part 97.Flange part 97 Outer diameter is bigger than the outer diameter of the end 13b1 of the front side of motor shell 13.Flange part 97 the rear side of flange part 97 end face 97b in Between component 70 front side end face 52c contact in the state of being consolidated through motor shell 13, intermediate member 70 and flange part 97 Determine component (not shown) such as bolt 15 and fixes.
Control unit 72 configures weighing in the axial direction between motor shell 13 and flange part 97 with motor shell 13 and flange part 97 In folded region.In motor 95, bearing 55, control unit 72, rotation are configured in order from 97 side of flange part towards 10 side of motor part Angle transducer magnet 76 and stator 22.
The effect > of < present embodiment
(1) control unit 72 configuration between motor shell 13 and flange part 97 with motor shell 13 and flange part 97 in axial direction In the region of upper overlapping.Therefore, compared with the case where control unit 72 is configured at the radial outside of motor shell 13 and flange part 97, energy Enough inhibit the enlargement in the radial direction of motor 95.
(2) intermediate member 70 is configured between motor shell 13 and flange part 97, control unit 72 is configured in intermediate member 70 It is interior.Even if being also able to suppress in the case where intermediate member 70 is set to motor 95 because control unit 72 causes motor 95 in radial direction Upper enlargement.
(3) control unit 72 is configured in the position for leaning on 10 side of motor part than bearing 55, the one end part of portion of terminal 78 is in control The axial other side in portion 72 processed and the other end extends to radial outside, and one end is electrically connected with control unit 72, thus terminal Portion 78 will not be contacted with bearing 55, can easily be done the wiring of portion of terminal 78 Yu control unit 72.
(4) flange part 97 has by motor part 10 by means of the homework department that is driven by axis 11.Therefore, it is able to suppress The enlargement in the radial direction of motor 95 with homework department.
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 and spirit of type are contained in utility model documented by claims and its impartial range at the same time.
In the above-described embodiment, as an example of homework department by taking pumping section 40 as an example, but not limited to this.Homework department can For all purposes.In addition, being not limited to purposes, homework department can also be indirectly connected with via gear etc..

Claims (11)

1. a kind of motor, includes
Motor part has the axis centered on the central axis extended in the axial direction;And
Control unit controls the work of the motor part,
It is characterized in that,
The motor part includes
Rotor is fixed in the axial other side of the axis;
Stator is located at the radial outside of the rotor;
The motor shell of bottomed tube stores the rotor and the stator, has bottom in the axial other side;And
Flange part is covered on the opening portion of an axial side opening for the motor shell,
The control unit be configured in it is between the motor shell and the flange part, exist with the motor shell and the flange part In the region being overlapped in axial direction.
2. motor according to claim 1, which is characterized in that
Intermediate member is configured between the motor shell and the flange part,
The control unit is configured in the intermediate member.
3. motor according to claim 2, which is characterized in that
The flange part has to from the motor part bearing that the side axis outstanding is supported in the axial direction,
The intermediate member includes
The control unit, the rotation angle sensor detected equipped with the rotation angle to the axis;
Rotation angle sensor magnet is installed on the axis, and the rotation angle sensor utilizes the rotation angle sensor The rotation angle of the axis is detected with magnet;And
Portion of terminal, one end portion is located at the axial other side of the control unit and the other end extends to radial outside, and described one End is electrically connected with the control unit,
The bearing, the control unit, the rotation angle sensor magnet and the stator are from flange part side direction The motor part side configures in order.
4. motor according to claim 3, which is characterized in that
The radial position of rotation angle sensor magnet is configured to the rotation angle sensor relative to the axis Radial position is identical.
5. motor according to claim 3 or 4, which is characterized in that
The intermediate member includes
Wall portion is connect with the end of the axial side of the motor shell;
The portion of terminal, is electrically connected with aerial lug;And
Bottom surface is contacted with the end face of the axial other side of the flange part,
The wall portion is to surround the annular shape around the axis from the position of radial outside relative to the axis,
The wall portion is from the bottom surface of the intermediate member prominent and end with the motor shell in the other side in the axial direction Connection,
The rotation angle sensor magnet configuration is installed in the radially inner side of the wall portion and is fixed on the outer of the axis On the face of the axial side of cricoid installing component on circumferential surface,
Control unit configuration between the wall portion and the axis, than rotation angle sensor magnet lean on axial side Position.
6. motor according to claim 5, which is characterized in that
The control unit is fixed on the intermediate member by means of fixation member.
7. motor according to claim 6, which is characterized in that
The fixation member is bolt.
8. motor according to claim 6 or 7, which is characterized in that
The portion of terminal is configured with one end and is configured by position, the other end of radially inner side than the wall than the wall portion Mode of the portion by the position of radial outside extends radially,
The control unit is so that the side that the one end of the portion of terminal is electrically connected with the radial outside end of the control unit Formula is supported by means of the portion of terminal with cantilever support state,
The fixation member is configured in following position: the opposite side for the side that the portion of terminal is connect with the control unit, A side position on the direction vertical with the extending direction of the portion of terminal;One connect with the portion of terminal with the control unit Another side position on side, vertical with the extending direction of portion of terminal direction.
9. motor according to claim 5, which is characterized in that
The control unit has in the end of the opposite side for the side that the portion of terminal is connect with the control unit along the axis The notch section of the circumferential skewing of the outer peripheral surface.
10. motor according to claim 9, which is characterized in that
The notch section has the notch face of the circumferential skewing of the outer peripheral surface along the axis,
The control unit is configured to have gap between the notch face and the outer peripheral surface of the axis,
Bending direction of the rotation angle sensor of the control unit along the notch face is configured in the institute than the notch section It states on the face opposed with the rotation angle sensor magnet of side of the notch face far from the axis.
11. motor according to claim 1, which is characterized in that
The flange part has homework department, and the motor part drives the homework department by means of the axis.
CN201821456210.1U 2017-09-08 2018-09-06 Motor Active CN209088741U (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201762555784P 2017-09-08 2017-09-08
US62/555,784 2017-09-08
JP2017190300A JP2019050710A (en) 2017-09-08 2017-09-29 motor
JP2017-190300 2017-09-29

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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

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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

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Family Cites Families (10)

* Cited by examiner, † Cited by third party
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

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JP2019050711A (en) 2019-03-28
CN208803993U (en) 2019-04-30
CN209088742U (en) 2019-07-09
JP2019049250A (en) 2019-03-28
JP2019049251A (en) 2019-03-28
JP6922623B2 (en) 2021-08-18
JP6981152B2 (en) 2021-12-15
CN208734533U (en) 2019-04-12
JP2019050710A (en) 2019-03-28

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