CN110521086A - Motor - Google Patents
Motor Download PDFInfo
- Publication number
- CN110521086A CN110521086A CN201880022985.4A CN201880022985A CN110521086A CN 110521086 A CN110521086 A CN 110521086A CN 201880022985 A CN201880022985 A CN 201880022985A CN 110521086 A CN110521086 A CN 110521086A
- Authority
- CN
- China
- Prior art keywords
- magnet
- rotor
- circumferential
- outside
- protruding portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 49
- 239000010959 steel Substances 0.000 claims description 49
- 238000001125 extrusion Methods 0.000 claims description 29
- 238000005452 bending Methods 0.000 claims description 28
- 230000001815 facial effect Effects 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000010276 construction Methods 0.000 description 6
- UQMRAFJOBWOFNS-UHFFFAOYSA-N butyl 2-(2,4-dichlorophenoxy)acetate Chemical compound CCCCOC(=O)COC1=CC=C(Cl)C=C1Cl UQMRAFJOBWOFNS-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000004907 flux Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000004323 axial length Effects 0.000 description 2
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
Motor includes axis, configures along the central axis extended in the axial direction；Rotor (10), is fixed on axis；Stator is located at the radial outside of rotor (10)；And shell, store rotor and stator.Rotor (10) includes through hole (13), axially extends, and is inserted into for axis；Multiple magnet receiving holes (15), they are along axially through according to the peripheral part for having spaced mode in the circumferential the radially inner side of rotor (10) being arranged in；And multiple magnet (17), they are inserted in multiple magnet receiving holes (15) respectively.Magnet receiving hole (15) has a pair of of space hole portion (15c), which further extends than the circumferential end (17b) of the circumferential two sides for the magnet (17) being inserted in magnet receiving hole (15) in the circumferential.At least any one space hole portion (15c) in a pair of of space hole portion (15c) has radially from the inner surface (15d) of space hole portion (15c) to the inside protruding portion outstanding (27) of space hole portion (15c).The circumferential end (17b) of magnet (17) is contacted with protruding portion (27).
Description
Technical field
The present invention relates to motors.
Background technique
In motor, exist has the IPM of magnet (interior permanent magnet: to bury in the embedment of the inside of rotor
Enter magnet) motor.In the IPM motor, magnet configuration in the inside of rotor, therefore can prevent that magnet from falling off from rotor can
It can property.
As documented by patent document 1, the rotor of IPM motor includes rotor core, cylindrical and be fixed on
Axis；Multiple magnet receiving holes, they are along axially through being arranged to circumferentially have interval in the peripheral part of rotor core；With
And multiple magnet, they are inserted in multiple magnet receiving holes respectively.
Storage hole portion includes hole portion main body, stores magnet；And space hole portion, from the circumferential two sides of hole portion main body
Circumferentially.Magnet has generates the big of minim gap with hole portion main body in the state of being inserted in hole portion main body radially
It is small.By by fixture from the axial sides clip magnet of rotor core in a manner of kept, to carry out the positioning of magnet.
By making lacquer solutions being soaked between storage hole portion and magnet etc. are fixed to be solidified with solution, and consolidate the magnet after being positioned
Due to rotor.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2017-38462 bulletin
Summary of the invention
Subject to be solved by the invention
In the IPM motor documented by patent document 1, it is unclear that for by magnet relative to magnet receiving hole in the circumferential
The datum level of positioning.Accordingly, there exist following situations: being inserted in each magnet of multiple magnet receiving holes relative to magnet receiving hole
Relative position deviate in the circumferential.In this case, when rotor drives, the rotation speed of rotor is possible to change.
The object of the present invention is to provide have the rotor that magnet can be made circumferentially positioned relative to magnet receiving hole
Motor.
Means for solving the problems
1st invention of the illustration of the application is motor, includes axis, is matched along the central axis extended in the axial direction
It sets；Rotor is fixed on the axis；Stator is located at the radial outside of the rotor；And shell, store the rotor
With the stator, the rotor includes through hole, axially extends, and is inserted into for the axis；Multiple magnet receiving holes, they
Along axially through according to the peripheral part for having spaced mode in the circumferential the radially inner side of the rotor being arranged in；And it is more
A magnet, they are inserted in multiple magnet receiving holes respectively, and the magnet receiving hole has a pair of of space hole portion, a pair
Circumferential end of the space hole portion in the circumferential than the circumferential two sides for the magnet being inserted in the magnet receiving hole is further
Extend, at least any one of space hole portion in a pair of space hole portion has radially out of described space hole portion
To the inside protruding portion outstanding of the space hole portion, the circumferential end of the magnet contacts with the protruding portion on surface.
Invention effect
According to the first invention of the illustration of the application, being capable of providing to have can make magnet relative to magnet receiving hole along week
To the motor of the rotor of positioning.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the motor of first embodiment.
Fig. 2 is the perspective view of rotor.
Fig. 3 A in Fig. 3 is the side view of rotor, and Fig. 3 B in Fig. 3 is magnet receiving hole represented by the arrow A of Fig. 3 A
Partial enlarged view.
Fig. 4 is the partial enlarged view of the magnet receiving hole of the variation of the space hole portion of first embodiment.
Fig. 5 is the partial enlarged view of the magnet receiving hole of second embodiment.
Specific embodiment
Hereinafter, being illustrated on one side to the motor of embodiments of the present invention referring to attached drawing on one side.In present embodiment
In, DC motor used in the compressor to electric tool is illustrated.In addition, in the following figures, in order to be easy to manage
Each structure is solved, makes actual construction different from the scale bar of each construction and quantity etc. sometimes.
In addition, in the accompanying drawings, showing XYZ coordinate system suitably as three-dimensional cartesian coordinate system.In XYZ coordinate system, Z axis
Direction is the direction parallel with the axial direction of central axis J shown in FIG. 1 (up and down direction of Fig. 1).X-direction be with shown in Fig. 1
Motor the parallel direction of radial direction, i.e. the direction vertical with Fig. 1 paper.Y direction is and X-direction and Z-direction
The vertical direction of both sides.
In addition, in the following description, the positive side (side+Z) of Z-direction is known as " rear side ", by the negative side of Z-direction (-
The side Z) it is known as " front side ".In addition, rear side and front side simply to illustrate that and the title that uses, do not limit actual positional relationship and
Direction.In addition, unless otherwise specified, the direction (Z-direction) parallel with central axis J is referred to as " axial direction ", it will be with
Radial direction centered on central axis J is referred to as " radial direction ", by centered on central axis J circumferential direction, that is, around central axis J's
Direction (direction θ) is referred to as " circumferential direction ".
In addition, in the present specification, the case where " axially extending " along axial direction (Z-direction) in addition to strictly extending it
Outside, also include along relative to axial direction the case where the tilted direction of less than 45 ° ranges extends.In addition, in the present specification,
" radially extending " in addition to strictly radially, extend along the direction vertical with axial direction (Z-direction) the case where other than, also wrap
The case where containing along relative to radial direction in the tilted direction extension of less than 45 ° ranges.
[first embodiment]
<overall structure>
Fig. 1 is the cross-sectional view of the motor of first embodiment.As shown in Figure 1, the motor 1 of present embodiment includes axis 5,
It is along the central axis J configuration extended in the axial direction；Rotor 10 is fixed on axis 5；Stator 30 is located at the radial direction of rotor 10
Outside；And shell 40, store rotor 10 and stator 30.In addition, motor 1 also has cover portion in the rear end of shell 40
50.Motor 1 is the motor of inner-rotor type.Hereinafter, each component parts is described in detail.
<shell 40>
Shell 40 is in thin-walled tubular with the end, has shell canister portion 41, Housing Base portion 43 and flange part 45.
(shell canister portion 41)
Shell canister portion 41 is in the tubular for circumferentially surrounding stator 30.In the present embodiment, shell canister portion 41 for example in
Cylindrical shape centered on central axis J.Shell canister portion 41 has the shell inner peripheral surface 41a kept to stator 30.
(Housing Base portion 43)
Housing Base portion 43 is connected with the end of the front side (side-Z) of shell canister portion 41.Housing Base portion 43 includes annulus
Portion 43a covers the front side of stator 30；And front side bearing cage 43b, it is located at the radially inner side of annular portion 43a, to preceding
Side bearing 55 is kept.The front side annular in shape for surrounding stator 30 when along end on observation annular portion 43a.Annular portion 43a exists
The concavity for being open when section view in rear side (side+Z) and being recessed to front side.
Front side bearing cage 43b is connected with the radially inner side of annular portion 43a, in side bottomed cylindrical outstanding forward.
Front side bearing cage 43b keeps front side bearing 55 in radially inner side.
(flange part 45)
Flange part 45 is connected with the end of the rear side of shell canister portion 41.Flange part 45 is from the end of the rear side of shell canister portion 41
Extend to radial outside, it is annular in shape when along end on observation.
<cover portion 50>
Cover portion 50 is positioned on the face 45a of the rear side of flange part 45 and is connected in disk-shaped.Cover portion 50 for example passes through bolt
It is fixed with secure components such as nuts relative to flange part 45.Have in the radial central portion of cover portion 50 and rear side bearing 57 is protected
The rear side bearing cage 50a held.In the present embodiment, rear side bearing cage 50a have along axially through cylindrical shape
Through hole 50a1.It is annularly provided in the front side of through hole 50a1 to radially inner side stage portion 50a2 outstanding.Rear side
The anterior end of bearing 57 is contacted with stage portion 50a2, to realize front side direction of the rear side bearing 57 relative to cover portion 50
Positioning.
<rotor 10>
Fig. 2 is the perspective view of rotor 10.Fig. 3 A is the side view of rotor 10, and Fig. 3 B is magnetic represented by the arrow A of Fig. 3 A
The partial enlarged view of iron reception hole 15.As depicted in figs. 1 and 2, rotor 10 includes through hole 13, axially extends, for axis 5
Insertion；Multiple magnet receiving holes 15, they are along being arranged in rotor 10 axially through and according to having spaced mode in the circumferential
Radially inner side peripheral part；Multiple magnet 17, they are inserted in multiple magnet receiving holes 15 respectively.
In the present embodiment, rotor 10 has rotor core 11, and through hole 13, multiple is provided in rotor core 11
Magnet receiving hole 15 and multiple magnet 17.Rotor core 11 is cylindrical, is strong magnetic material system.As shown in Figure 3A, it penetrates through
Hole 13 extends along the central axis J of rotor core 11.
(rotor core 11)
As shown in Fig. 2, rotor core 11 passes through the electromagnetism along axially stacked multiple circular in shape when along end on observation
Steel plate 19 forms.Be respectively arranged on multiple electromagnetic steel plates 19 such as lower component: magnet receiving hole portion 15a is magnet storage
The a part in hole 15；And perforation hole portion 13a, it is a part of through hole 13.In the present embodiment, electromagnetic steel plate 19 has
There is fixed hole portion 21a, fixation hole portion 21a is for will be fixed in the axial direction along axially stacked multiple electromagnetic steel plate 19
Fixation hole 21 a part.In the magnet receiving hole portion 15a than electromagnetic steel plate 19 by the position of radially inner side circumferentially to have
There is the mode of specified interval to configure multiple fixed hole portion 21a.Multiple perforation hole portion 13a are connected in the axial direction and become through hole
13, moreover, multiple fixed hole portion 21a are connected in the axial direction and become fixation hole 21.Hereinafter, will be comprising having aftermentioned protruding portion
27 magnet receiving hole 15 and the electromagnetic steel plate of through hole 13 are known as " positioning electromagnetic steel plate 23 ".
(magnet 17)
As shown in Figure 3A, magnet 17 is in rectangular shape when along end on observation, and magnet 17 is in the cuboid axially extended
Shape.As shown in Figure 3B, the circumferential end 17b of magnet 17 has planar planar portions 17a.The axial length of magnet 17 compares magnet
The axial length of reception hole 15 is short.Magnet 17 is, for example, the sintered magnet comprising neodymium.
Radially inner side of the magnet 17 in the circumferential end 17b of magnet 17 has inside angle part 17c, and in magnet 17
Radial outside in circumferential end 17b has outer corners 17d.In the present embodiment, inside angle part 17c and outer corners
17d is when along end on observation in rectangular-shaped convex outstanding.In addition, the magnet 17 being configured adjacently in the circumferential is configured as magnetic
It is extremely different.
In addition, magnet 17 can also implement plating, such as nickel plating on the surface.By plating, it is able to suppress the corruption of magnet
Erosion.In addition, magnet 17 can be magnetized, can not also be magnetized when being inserted into magnet receiving hole 15.
(magnet receiving hole 15)
As shown in Figure 3A and Figure 3B, magnet receiving hole 15 has circumferentially in the peripheral part of the radially inner side of rotor 10 in length
The reception hole main part 15b that square shape extends.In addition, magnet receiving hole 15 has in the circumferential than being inserted in magnet receiving hole 15
A pair of of space hole portion 15c that the circumferential end 17b of the circumferential two sides of interior magnet 17 further extends.In the present embodiment,
Magnet receiving hole 15 have reception hole main part 15b and circumferential two sides from reception hole main part 15b circumferentially one
To space hole portion 15c.
The radial width Wh of reception hole main part 15b is bigger than the radial width Wm of magnet 17.Therefore, when magnet 17 is inserted in
When reception hole main part 15b, gap is provided between the inner surface and magnet 17 of the radially inner side of reception hole main part 15b
25.By the gap 25, magnet 17 can be readily inserted into reception hole main part 15b.The circumferential direction of reception hole main part 15b is long
It spends more slightly shorter than the circumferential lengths of magnet 17.Therefore, when magnet 17 is inserted in reception hole main part 15b, magnet 17 be set to
The protruding portion 27 of space hole portion 15c contacts, so as to the possibility for preventing magnet 17 to be difficult to be inserted in storage main part 15b
Property.
At least any one space hole portion 15c in a pair of of space hole portion 15c has radially out of space hole portion 15c
The inside of from surface 15d to space hole portion 15c protruding portion 27 outstanding.In the present embodiment, a pair of of space hole portion 15c has respectively
There is protruding portion 27.
As shown in Figure 3B, the inner surface 15d of space hole portion 15c includes inner surface opposed portion 15d1, the week with magnet 17
It is opposed to end 17b, and radially extend；Inner surface inside portion 15d2, from the radially inner side end of inner surface opposed portion 15d1
Extend towards the side inside angle part 17c of magnet 17；And inner surface outside portion 15d3, from the radial direction of inner surface opposed portion 15d1
Outboard end extends towards the side outer corners 17d of magnet 17.Protruding portion 27 includes Medial extrusion 27a, from space hole portion
The inner surface inside portion 15d2 of 15c is prominent to radial outside；And outside protruding portion 27b, from the inner surface of space hole portion 15c
Outside portion 15d3 is prominent to radially inner side.
In the present embodiment, there is Medial extrusion 27a inside to be bent face 27c, which is bent face 27c on edge
It is in arc-shaped bend on direction outstanding in the hole portion 15c of the space end on observation Shi Xiang.Outside protruding portion 27b has along axial direction
When observation with circumferentially advance and to the inclined medial plane portion 27d of radially inner side.It, can be in interior lateral bending curved face part 27c
It is the inner surface integrally bending of Medial extrusion 27a, is also possible to a part bending of the inner surface of Medial extrusion 27a.In
In present embodiment, in interior lateral bending curved face part 27c, the inner surface integrally bending of Medial extrusion 27a.
When medial plane portion 27d inclines relative to the inner surface 15d of the radial outside of reception hole main part 15b to radially inner side
When oblique tilt angle theta increases, the opening area of space hole portion 15c becomes smaller, the function drop for increasing magnetic resistance of space hole portion 15c
It is low.Therefore, the tilt angle theta of medial plane portion 27d is the smaller the better.But when the size of tilt angle theta is close to 0 °, outside
The distance between planar portions 27d and the periphery of rotor 10 shorten, it is difficult to draw the magnetic line of force L from magnet 17 to 30 side of stator
It leads.Therefore, in the present embodiment, the tilt angle theta of medial plane portion 27d is set to 15 °.
In magnet 17, the inside angle part 17c of magnet 17 is contacted with Medial extrusion 27a, and the lateral angle of magnet 17
Portion 17d is contacted with outside protruding portion 27b.In the present embodiment, in magnet 17, the inside angle part 17c of magnet 17 and inside
The inside bending face 27c contact of protruding portion 27a, and the outside of the outer corners 17d of magnet 17 and outside protruding portion 27b is flat
Facial 27d contact.Therefore, magnet 17 positions in the circumferential relative to magnet receiving hole 15.
<stator 30>
As shown in Figure 1, stator 30 is located at the radial outside of rotor 10.Stator 30 surrounds rotor 10 around axis (direction θ), makes
Rotor 10 is rotated around central axis J.Stator 30 has core-back 30a, teeth portion 30b, coil 30c and insulating part (coiling
Frame) 30d.
The shape of core-back 30a is the cylindrical shape concentric with axis 5.Medial surface direction of the teeth portion 30b from core-back 30a
Axis 5 extends.Multiple teeth portion 30b are set, teeth portion 30b is configured with impartial interval in the circumferential direction of the medial surface of core-back 30a.
Coil 30c is arranged around insulating part (bobbin winder bracket) 30d, is formed by winding conductor wire.Insulating part (bobbin winder bracket) 30d installation
In each teeth portion 30b.
<axis 5>
As shown in Figure 1, axis 5 extends along central axis J and penetrates through rotor 10.The rear side perforation of axis 5 is set to cover portion 50
Rear side bearing 57 simultaneously extends.The front side of axis 5 is prominent from rotor 10, is configured in the front side bearing cage 43b of shell 40
Front side bearing 55 supports.Therefore, axis 5 is by two supports.
<effect of present embodiment>
(positioning of the magnet 17 relative to magnet receiving hole 15)
Firstly, being illustrated to the positioning of magnet 17.As shown in Figure 3B, make the magnet 17 for being inserted in magnet receiving hole 15
When circumferentially moved relative to magnet receiving hole 15, the outer corners 17d of magnet 17 is contacted with medial plane portion 27d, medial angle
Portion 17c is contacted with inside bending face 27c.Magnet 17 is positioned in the circumferential relative to magnet receiving hole 15 as a result,.In addition,
It is contacted in the outer corners 17d of magnet 17 with medial plane portion 27d, and inside angle part 17c is not contacted with inside bending face 27c
In the case where, when further making magnet 17 circumferentially moved, outer corners 17d is moved on planar portions 27d on the outside, medial angle
Portion 17c is contacted with inside bending face 27c.Magnet 17 is positioned relative to magnet receiving hole 15 circumferentially and radially as a result,.
(leakage of magnetic line of force L)
Then, it is illustrated to by the leakage of magnetic line of force L guided to the peripheral part of rotor 10.As shown in Figure 3B, outside
Protruding portion 27b have when along end on observation with circumferentially advance and to the inclined medial plane portion 27d of radially inner side.Due to
The tilt angle theta of medial plane portion 27d is set smaller, therefore is able to suppress the reduction of the opening area of space hole portion 15c,
And it is able to suppress the increase of the distance between the peripheral part of medial plane portion 27d and rotor 10 X.Therefore, can reduce from magnetic
The magnetic that a part for the magnetic line of force L that the circumferential end 17b of iron 17 is generated is guided to other adjacent in the circumferential 17 sides of magnet
The leakage of the line of force.
<effect of present embodiment>
(1) at least any one space hole portion 15c of a pair of space hole portion 15c has radially from space hole portion 15c's
The inside of from inner surface 15d to space hole portion 15c protruding portion 27 outstanding, in magnet 17, the circumferential end 17b of magnet 17 and prominent
Portion 27 contacts out.Therefore, magnet 17 is positioned in the circumferential relative to magnet receiving hole 15.
(2) in the present embodiment, protruding portion 27, magnet 17 and a pair are provided in a pair of of space hole portion 15c respectively
The protruding portion 27 of the space hole portion 15c of either side in the hole portion 15c of space contacts.Therefore, can be improved magnet 17 relative to
The freedom degree of the circumferential positioning of magnet receiving hole 15.In addition, being determined by the circumferential direction by magnet 17 relative to magnet receiving hole 15
Position can be adjusted the spin balancing of rotor 10 in side or the other side.
(3) in the present embodiment, magnet 17 is in rectangular shape when along end on observation, and magnet 17 is in axially extend
Rectangular-shape.Protruding portion 27 includes Medial extrusion 27a, and in space, the inner surface inside portion 15d2 of hole portion 15c is outside to diameter
Side is prominent；And outside protruding portion 27b, in space, the inner surface outside portion 15d3 of hole portion 15c is prominent to radially inner side.Cause
This, the circumferential end 17b of magnet 17 is in planar.In addition, 17b pairs of circumferential end of inner surface opposed portion 15d1 and magnet 17
It sets, Medial extrusion 27a and outside protruding portion 27b are located at the position that specific inner surface opposed portion 15d1 leans on 17 side of magnet.Therefore, energy
Enough make the inside angle part 17c of magnet 17 and the contact of Medial extrusion 27a and outer corners 17d and outside protruding portion 27b
Contact becomes easy.
(4) in the present embodiment, protruding portion 27b in outside has when along end on observation with circumferentially advancing and Xiang Jing
Inclined medial plane portion 27d inwardly, therefore distance increases between medial plane portion 27d and the outer peripheral surface of rotor 10.Therefore,
A part of the magnetic line of force L generated from magnet 17 is guided to than medial plane portion 27d by 30 side of stator of radial outside.Cause
This, can expand the region of the magnetic circuit of the magnetic line of force L generated to the guidance of 30 side of stator from magnet 17.
(5) in the present embodiment, in magnet 17, the inside angle part 17c and inside bending face 27c of magnet 17 are connect
Touching, and the outer corners 17d of magnet 17 is contacted with medial plane portion 27d.Here, when the inside angle part 17c of magnet 17 with it is interior
Lateral bending curved face part 27c contact, and when the outer corners 17d of magnet 17 and medial plane portion 27d are contacted, magnet 17 is sometimes in diameter
It moves up.In this case, magnet 17 is positioned in the circumferential relative to magnet receiving hole 15, and is determined radially
Position.
(6) in the present embodiment, rotor 10 along axially stacked multiple electromagnetic steel plates 19 by forming.In rotor 10 by one
In the case that a electromagnetic component is constituted, when motor 1 is powered, if passing through electromagnetism sense by the flux change in rotor 10
It answers and flows through eddy current in rotor 10.When flowing through the eddy current, heat is generated.But pass through in rotor 10 along axial layer
In the case of folding made of multiple electromagnetic steel plates 19, the length of flow of the eddy current shortens, and can reduce the generation of heat.
(7) in the present embodiment, rotor 10 along axially stacked multiple positioning electromagnetic steel plates 23 by forming.Therefore,
It is capable of providing following motor 1: being able to carry out circumferential positioning of the magnet 17 relative to magnet receiving hole 15, and be able to suppress
Fever caused by eddy current.
[variation of first embodiment]
(there is Medial extrusion 27a inside to be bent face 27c, and outside protruding portion 27b has outside bending face 27e's
Variation)
In the space hole portion 15c of the first embodiment shown in Fig. 3 B, Medial extrusion 27a has inside bending face
27c, outside protruding portion 27b have medial plane portion 27d.But it is not limited to the construction, for example, it is also possible to be, such as Fig. 4 A
Shown, there is Medial extrusion 27a inside to be bent face 27c, and outside protruding portion 27b has outside bending face 27e, and (first becomes
Shape example).
In first variation, outside is bent radius of curvature of the radius of curvature than inside bending face 27c of face 27e
Greatly.Therefore, the inner surface of outside bending face 27e and the distance between the outer peripheral surface of rotor core 11 are capable of increasing.Therefore, energy
Enough expand the region of the magnetic circuit of a part of the magnetic line of force L generated to the guidance of 30 side of stator from magnet 17.
(the change that there is Medial extrusion 27a inner side plane portion 27f, outside protruding portion 27b to have outside bending face 27e
Shape example)
In the space hole portion 15c of the first embodiment shown in Fig. 3 B, Medial extrusion 27a has inside bending face
27c, outside protruding portion 27b have medial plane portion 27d.But it is not limited to the construction, for example, it is also possible to be, such as Fig. 4 B
Shown, there is Medial extrusion 27a inner side plane portion 27f, outside protruding portion 27b to have outside bending face 27e (the second deformation
Example).
In the second variation, Medial extrusion 27a have when along end on observation with circumferentially advance and to radial direction
The inclined inner side plane portion 27f in outside, outside protruding portion 27b have prominent along the hole portion 15c of the space end on observation Shi Xiang
Direction in arc-shaped bend outside be bent face 27e.Thus, for example when the inside angle part 17c of magnet 17 and inside are flat
In the case that facial 27f is contacted, and outer corners 17d is not contacted with outside bending face 27e, by further making magnet 17
Circumferentially moved, inside angle part 17c is moved on inner side plane portion 27f, so that outer corners 17d is bent face 27e with outside and is connect
Touching.Magnet 17 is positioned in the circumferential relative to magnet receiving hole 15 as a result, and is positioned radially.
(there is Medial extrusion 27a inner side plane portion 27f, outside protruding portion 27b to have the deformation of medial plane portion 27d
Example)
In the space hole portion 15c of the first embodiment shown in Fig. 3 B, Medial extrusion 27a has inside bending face
27c, outside protruding portion 27b have medial plane portion 27d.But it is not limited to the construction, for example, it is also possible to be, such as Fig. 4 C
Shown, there is Medial extrusion 27a inner side plane portion 27f, outside protruding portion 27b to have medial plane portion 27d (third deformation
Example).
In the 3rd variation, inner surface 15d of the medial plane portion 27d relative to the radial outside of magnet receiving hole 15
Tilt angle theta 2 of the tilt angle theta 1 than inner side plane portion 27f relative to the inner surface 15d of the radially inner side of magnet receiving hole 15
It is small.Therefore, it is able to suppress the reduction of the opening area of space hole portion 15c.In addition, even if magnet 17 inside angle part 17c with
In the case that inner side plane portion 27f is contacted, and outer corners 17d is not contacted with medial plane portion 27d, by further making magnetic
Iron 17 is circumferentially moved, and moves inside angle part 17c on inner side plane portion 27f, so as to make outer corners 17d and outer
Side plane portion 27d contact.Therefore, magnet 17 is positioned in the circumferential relative to magnet receiving hole 15, and is determined radially
Position.
(variation that rotor 10 has fixing steel plate group and non-locating steel plate group)
The rotor 10 of first embodiment shown in Fig. 2 along axially stacked multiple positioning electromagnetic steel plates 23 by forming.
But it is not limited to the structure.For example, it is also possible to be, rotor 10 passes through fixing steel plate group and non-locating steel plate group in the axial direction
It is configured adjacently, the fixing steel plate group along axially stacked multiple positioning electromagnetic steel plates 23 by forming, the non-locating steel plate
Group by be laminated in the axial direction it is multiple there is no the non-locating of protruding portion 27 with electromagnetic steel plate form (the 4th variation).
In the 4th variation, rotor 10 is configured adjacently in the axial direction by fixing steel plate group and non-locating steel plate group
At.Therefore, in the non-locating electromagnetic steel plate of non-locating steel plate group, in space, protruding portion 27, therefore energy is not present in hole portion 15c
Enough increase the opening area of space hole portion 15c.Magnet 17 adjacent in the circumferential is capable of increasing by space hole portion 15c as a result,
Between magnetic resistance, the flux leakage between magnet 17 so as to reduce rotor core 11.
(variation of the configuration about fixing steel plate group and non-locating steel plate group)
The rotor 10 of first embodiment shown in Fig. 2 along axially stacked multiple positioning electromagnetic steel plates 23 by forming.
But it is not limited to the construction, for example, it is also possible to be in rotor 10, to configure in order positioning from axial side towards the other side
Steel plate group, non-locating steel plate group, fixing steel plate group (5th variation).
In 5th variation, in rotor 10, fixing steel plate group, non-fixed is configured in order from axial side towards the other side
Position steel plate group, fixing steel plate group.Therefore, the circumferential positioning of magnet 17 can be carried out in the axial sides of magnet 17, so as to
Enough make magnet 17 steadily by rotor bearing.In addition, rotor 10 has non-locating steel plate group, therefore it is able to suppress rotor entirety
The reduction of the opening area of space hole portion 15c.Therefore, using the space hole portion 15c without protruding portion 27, increase in the circumferential
Magnetic resistance between adjacent magnet 17, the flux leakage between magnet 17 so as to reduce rotor core 11.
[second embodiment]
Then, the motor of second embodiment of the present invention 1 is illustrated.Fig. 5 is that the magnet of second embodiment is received
Receive the partial enlarged view in hole 15.In the motor 1 of first embodiment, show radially inner side in the hole portion 15c of space and
The respective inner surface 15d of radial outside is provided with the example of radially projecting protruding portion 27.As shown in figure 5, the second embodiment party
With the circumferential end 17b of magnet 17 opposed inner surface opposed portion of the motor 1 of formula in the inner surface 15d of space hole portion 15c
15d1 is provided with to the inside of spatial hole portion 15c circumferentially circumferential protruding portion 61 outstanding.Hereinafter, in this second embodiment,
It is illustrated centered on the point being different from the first embodiment, to form part identical with the motor 1 of first embodiment
It marks identical label and omits the description.
At least any one space hole portion 15c in a pair of of space hole portion 15c of second embodiment has circumferential prominent
Portion 61, the circumferential direction protruding portion 61 is out of, opposed with the circumferential end 17b of magnet 17 in the inner surface 15d of space hole portion 15c
Opposing surface portion 15d1 is circumferentially prominent to the inside of space hole portion 15c.In the illustrated embodiment, circumferentially adjacent
In magnet receiving hole 15, circumferential protruding portion 61 is set on the inner surface counterpart 15d1 of circumferentially opposed space hole portion 15c.
In addition, the space hole portion 15c in the circumferential two sides of magnet receiving hole 15 also can be set in circumferential protruding portion 61.In addition, circumferential prominent
The space hole portion 15c in the circumferential side of magnet receiving hole 15 also can be set in portion 61 out.
Circumferential protruding portion 61 has from inner surface opposed portion 15d1 circumferentially linearly prominent main part 61a outstanding.
Prominent main part 61a is in rodlike.The section in the direction vertical with projected direction of prominent main part 61a can be round, triangle
Arbitrary shape in shape, polygon.The projected direction front end bending hemispherical of prominent main part 61a.In addition, prominent main body
The projected direction front end of portion 61a also can have opposed with the circumferential end 17b of magnet 17 and be capable of the front end of face contact
Planar portions.
<effect of second embodiment>
When keeping the magnet for being inserted in magnet receiving hole 15 17 mobile to 61 side of circumferential protruding portion for being set to space hole portion 15c
When, the circumferential end 17b of magnet 17 is contacted with circumferential protruding portion 61.Therefore, magnet 17 is relative to magnet receiving hole 15 in circumferential direction
On positioned.
<effect of second embodiment>
Only by contacting the circumferential end 17b of the magnet for being inserted in magnet receiving hole 15 17 with circumferential protruding portion 61, just
It can easily be done circumferential positioning of the magnet 17 relative to magnet receiving hole 15.
More than, the preferred embodiment of the present invention is illustrated, but the present invention is not limited to these embodiments,
It is able to carry out various modifications and change within the scope of its subject matter.
Label declaration
1: motor；5: axis；10: rotor；13: through hole；15: magnet receiving hole；15c: space hole portion；15d: inner surface；
15d1: inner surface opposed portion；15d2: inner surface inside portion；15d3: inner surface outside portion；17: magnet；17b: circumferential end；
17c: inside angle part；17d: outer corners；19: electromagnetic steel plate；23: electromagnetic steel plate is used in positioning；27: protruding portion；27a: interior pleurapophysis
Portion out；27b: outside protruding portion；27c: inside bending face；27d: medial plane portion；27e: outside bending face；27f: inside
Planar portions；30: stator；40: shell；61: circumferential protruding portion；J: central axis.
Claims (16)
1. a kind of motor, includes
Axis is configured along the central axis extended in the axial direction；
Rotor is fixed on the axis；
Stator is located at the radial outside of the rotor；And
Shell stores the rotor and the stator,
The rotor includes
Through hole axially extends, and is inserted into for the axis；
Multiple magnet receiving holes, they are along axially through being arranged in the rotor according to having spaced mode in the circumferential
The peripheral part of radially inner side；And
Multiple magnet, they are inserted in multiple magnet receiving holes respectively,
The magnet receiving hole has a pair of of space hole portion, and a pair of space hole portion is in the circumferential than being inserted in the magnet storage
The circumferential end of the circumferential two sides of the magnet in hole further extends,
At least any one of space hole portion in a pair of space hole portion has radially out of described space hole portion
Inside protruding portion outstanding from surface to the space hole portion,
The circumferential end of the magnet is contacted with the protruding portion.
2. motor according to claim 1, wherein
A pair of space bore portion does not have the protruding portion,
The magnet is contacted with the protruding portion of the space hole portion of the either side in a pair of space hole portion.
3. motor according to claim 1 or 2, wherein
The magnet is in rectangular shape when along end on observation, and the magnet is in the rectangular-shape axially extended,
Radially inner side of the magnet in the circumferential end of the magnet has inside angle part, and in the magnet
Radial outside in the circumferential end has outer corners,
The inner surface of the space hole portion includes
Inner surface opposed portion, it is opposed with the circumferential end of the magnet, it radially extends；
Inner surface inside portion, from the radially inner side end of the inner surface opposed portion towards the inside angle part side of the magnet
Extend；And
Inner surface outside portion, from the radial outside end of the inner surface opposed portion towards the outer corners side of the magnet
Extend,
The protruding portion includes
Medial extrusion, it is prominent to radial outside in the inner surface inside portion of the space hole portion；And
Outside protruding portion, it is prominent to radially inner side in the inner surface outside portion of the space hole portion,
In the magnet, the inside angle part of the magnet is contacted with the Medial extrusion, and the institute of the magnet
Outer corners are stated to contact with the outside protruding portion.
4. motor according to claim 3, wherein
The Medial extrusion and the outside protruding portion have when along end on observation outstanding into the space hole portion
In the inside bending face of arc-shaped bend and outside bending face on direction.
5. motor according to claim 4, wherein
In the magnet, the inside angle part of the magnet connects with the inside bending face of the Medial extrusion
Touching, and the outside of the outer corners of the magnet and the outside protruding portion is bent facial contact.
6. motor according to claim 3, wherein
The Medial extrusion have when along end on observation with circumferentially advance and to the inclined inner side plane of radial outside
Portion,
The outside protruding portion has curved in arc-shaped on direction outstanding into the space hole portion when along end on observation
Bent outside is bent face.
7. motor according to claim 6, wherein
In the magnet, the inside angle part of the magnet is contacted with the inner side plane portion of the Medial extrusion,
And the outside of the outer corners of the magnet and the outside protruding portion is bent facial contact.
8. motor according to claim 3, wherein
The Medial extrusion have when along end on observation with circumferentially advance and to the inclined inner side plane of radial outside
Portion,
The outside protruding portion have when along end on observation with circumferentially advance and to the inclined medial plane of radially inner side
Portion.
9. motor according to claim 8, wherein
In the magnet, the inside angle part of the magnet is contacted with the inner side plane portion of the Medial extrusion,
And the outer corners of the magnet are contacted with the medial plane portion of the outside protruding portion.
10. motor according to claim 3, wherein
The Medial extrusion has curved in arc-shaped on direction outstanding into the space hole portion when along end on observation
Bent inside is bent face,
The outside protruding portion have when along end on observation with circumferentially advance and to the inclined medial plane of radially inner side
Portion.
11. motor according to claim 10, wherein
In the magnet, the inside angle part of the magnet connects with the inside bending face of the Medial extrusion
Touching, and the outer corners of the magnet are contacted with the medial plane portion of the outside protruding portion.
12. motor according to claim 1, wherein
The rotor along the electromagnetic steel plate of axially stacked multiple circular in shape when along end on observation by forming.
13. motor according to claim 12, wherein
The electromagnetic steel plate has positioning electromagnetic steel plate, which has the through hole and be provided with described
The magnet receiving hole of protruding portion,
The rotor along axially stacked multiple positioning with electromagnetic steel plate by being formed.
14. motor according to claim 12, wherein
The electromagnetic steel plate includes
Positioning electromagnetic steel plate, with the through hole and the magnet receiving hole for being provided with the protruding portion；And
Non-locating electromagnetic steel plate, with the through hole and the magnet receiving hole for being not provided with the protruding portion,
The rotor by fixing steel plate group with non-locating steel plate group is axially adjacent configures, which passes through edge
Axially stacked multiple positioning are formed with electromagnetic steel plate, which passes through along axially stacked multiple non-locating
It is formed with electromagnetic steel plate.
15. motor according to claim 14, wherein
In the rotor, the fixing steel plate group, the non-locating steel plate are configured in order from axial side towards the other side
Group, the fixing steel plate group.
16. a kind of motor, includes
Axis is configured along the central axis extended in the axial direction；
Rotor is fixed on the axis；
Stator is located at the radial outside of the rotor；And
Shell stores the rotor and the stator,
The rotor includes
Through hole axially extends, and is inserted into for the axis；
Multiple magnet receiving holes, they are along axially through being arranged in the rotor according to having spaced mode in the circumferential
The peripheral part of radially inner side；And
Multiple magnet, they are inserted in multiple magnet receiving holes respectively,
The magnet is in rectangular shape when along end on observation, and the magnet is in the rectangular-shape axially extended,
The magnet receiving hole has a pair of of space hole portion, and a pair of space hole portion is in the circumferential than being inserted in the magnet storage
The circumferential end of the circumferential two sides of the magnet in hole further extends,
At least any one of space hole portion in a pair of space hole portion has circumferentially out of described space hole portion
The inside of the inner surface opposed portion opposed with the circumferential end of the magnet to the space hole portion in surface is outstanding
Circumferential protruding portion,
The circumferential end of the magnet is contacted with the circumferential protruding portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201762479492P | 2017-03-31 | 2017-03-31 | |
| US62/479,492 | 2017-03-31 | ||
| PCT/JP2018/010593 WO2018180636A1 (en) | 2017-03-31 | 2018-03-16 | Motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110521086A true CN110521086A (en) | 2019-11-29 |
Family
ID=63675542
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880022990.5A Withdrawn CN110574258A (en) | 2017-03-31 | 2018-03-16 | Motor with a stator having a stator core |
| CN201880022985.4A Pending CN110521086A (en) | 2017-03-31 | 2018-03-16 | Motor |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880022990.5A Withdrawn CN110574258A (en) | 2017-03-31 | 2018-03-16 | Motor with a stator having a stator core |
Country Status (3)
| Country | Link |
|---|---|
| JP (2) | JPWO2018180636A1 (en) |
| CN (2) | CN110574258A (en) |
| WO (2) | WO2018180634A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7012878B2 (en) * | 2018-12-20 | 2022-01-28 | 三菱電機株式会社 | How to manufacture rotors, motors, blowers, air conditioners and rotors |
| WO2020208988A1 (en) * | 2019-04-11 | 2020-10-15 | パナソニックＩｐマネジメント株式会社 | Motor and electric device |
| JP7362788B2 (en) * | 2021-09-29 | 2023-10-17 | 株式会社東芝 | rotor of rotating electric machine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012075256A (en) * | 2010-09-29 | 2012-04-12 | Aisin Aw Co Ltd | Rotor for rotating electric machine and method of manufacturing rotor core used for the same |
| JP2013126330A (en) * | 2011-12-15 | 2013-06-24 | Toyota Boshoku Corp | Core of rotary electric machine and assembly method of the same |
| JP2014060835A (en) * | 2012-09-14 | 2014-04-03 | Denso Corp | Rotor of rotary electric machine |
| CN103959607A (en) * | 2011-11-25 | 2014-07-30 | 日产自动车株式会社 | Electric motor |
| CN104081631A (en) * | 2012-03-23 | 2014-10-01 | 三菱重工汽车空调***株式会社 | Motor and electric compressor using same |
| CN105164897A (en) * | 2013-04-23 | 2015-12-16 | 日立空调·家用电器株式会社 | Permanent magnet electric motor |
| US20160241094A1 (en) * | 2015-02-18 | 2016-08-18 | Nidec Motor Corporation | Staked rotor core for retaining magnets |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02139449U (en) * | 1989-04-25 | 1990-11-21 | ||
| JP3674649B2 (en) * | 1996-05-08 | 2005-07-20 | 株式会社安川電機 | Inner magnet type motor and its permanent magnet fixing method |
| JP4666500B2 (en) * | 2005-12-27 | 2011-04-06 | 三菱電機株式会社 | Rotor of permanent magnet embedded motor |
| JP2013099038A (en) * | 2011-10-28 | 2013-05-20 | Mitsuba Corp | Rotor for electric motor and brushless motor |
| JP6019876B2 (en) * | 2012-07-23 | 2016-11-02 | 株式会社ジェイテクト | Rotating electric machine |
| JP5851365B2 (en) * | 2012-08-31 | 2016-02-03 | 日立オートモティブシステムズ株式会社 | Rotating electric machine |
| WO2014054150A1 (en) * | 2012-10-04 | 2014-04-10 | 三菱電機株式会社 | Electric motor having embedded permanent magnets |
| CN203387314U (en) * | 2013-07-30 | 2014-01-08 | 中山大洋电机制造有限公司 | Motor rotor structure |
| CN105453387B (en) * | 2013-08-05 | 2018-07-27 | 三菱电机株式会社 | Permanent magnet submerged type electric rotating machine |
| JP6357859B2 (en) * | 2014-05-12 | 2018-07-18 | 富士電機株式会社 | Permanent magnet embedded rotary electric machine |
| CN105490412B (en) * | 2014-08-06 | 2019-07-09 | 德昌电机(深圳)有限公司 | Rotor and the brshless DC motor for applying it |
-
2018
- 2018-03-16 CN CN201880022990.5A patent/CN110574258A/en not_active Withdrawn
- 2018-03-16 CN CN201880022985.4A patent/CN110521086A/en active Pending
- 2018-03-16 JP JP2019509305A patent/JPWO2018180636A1/en active Pending
- 2018-03-16 WO PCT/JP2018/010576 patent/WO2018180634A1/en active Application Filing
- 2018-03-16 WO PCT/JP2018/010593 patent/WO2018180636A1/en active Application Filing
- 2018-03-16 JP JP2019509304A patent/JPWO2018180634A1/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012075256A (en) * | 2010-09-29 | 2012-04-12 | Aisin Aw Co Ltd | Rotor for rotating electric machine and method of manufacturing rotor core used for the same |
| CN103959607A (en) * | 2011-11-25 | 2014-07-30 | 日产自动车株式会社 | Electric motor |
| JP2013126330A (en) * | 2011-12-15 | 2013-06-24 | Toyota Boshoku Corp | Core of rotary electric machine and assembly method of the same |
| CN104081631A (en) * | 2012-03-23 | 2014-10-01 | 三菱重工汽车空调***株式会社 | Motor and electric compressor using same |
| JP2014060835A (en) * | 2012-09-14 | 2014-04-03 | Denso Corp | Rotor of rotary electric machine |
| CN105164897A (en) * | 2013-04-23 | 2015-12-16 | 日立空调·家用电器株式会社 | Permanent magnet electric motor |
| US20160241094A1 (en) * | 2015-02-18 | 2016-08-18 | Nidec Motor Corporation | Staked rotor core for retaining magnets |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018180634A1 (en) | 2018-10-04 |
| WO2018180636A1 (en) | 2018-10-04 |
| CN110574258A (en) | 2019-12-13 |
| JPWO2018180634A1 (en) | 2020-02-06 |
| JPWO2018180636A1 (en) | 2020-02-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9350206B2 (en) | Axial gap rotating electrical machine | |
| US7589922B2 (en) | Lens driving apparatus and its manufacturing method | |
| US10411550B2 (en) | Motor with brush card having an X capacitor and double Y capacitors | |
| US10305358B2 (en) | Low cost limited rotation rotary actuator | |
| CN102576216B (en) | Keep the End cover for motor keeper that rotor-stator is concentric | |
| CN110521086A (en) | Motor | |
| EP2518865A1 (en) | Stator structure for rotary electric machine and method for mounting stator | |
| JP6935412B2 (en) | Busbar assembly, motor including this | |
| US10312755B2 (en) | Motor | |
| WO2014188628A1 (en) | Rotor and motor | |
| JP5641446B2 (en) | Rotor for rotating electrical machine for vehicles | |
| US20160020659A1 (en) | Electric motor, pump device using electric motor, and stator | |
| CN110729823A (en) | Triaxial gimbal assembly with spherical motor | |
| WO2018147244A1 (en) | Stator for an electric motor | |
| US10128718B2 (en) | Stator, brushless motor, and stator manufacturing method | |
| CN109633850A (en) | Lens driver, photographic means and electronic equipment | |
| US10720824B2 (en) | Low cost limited rotation rotary actuator | |
| US11095180B2 (en) | Motor including a holding member support portion which supports portions of a bus bar | |
| JP2018183020A (en) | Rotary electric machine | |
| US6861773B2 (en) | Stepping motor | |
| JP4492658B2 (en) | Vehicle alternator | |
| CN115516739A (en) | Motor | |
| JP2011217448A (en) | Armature and motor | |
| CN110546863A (en) | Electric motor | |
| EP4300773A1 (en) | Stator and brushless motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191129 |