CN109217511A - The manufacturing method of rotor, motor and rotor - Google Patents
The manufacturing method of rotor, motor and rotor Download PDFInfo
- Publication number
- CN109217511A CN109217511A CN201810599547.6A CN201810599547A CN109217511A CN 109217511 A CN109217511 A CN 109217511A CN 201810599547 A CN201810599547 A CN 201810599547A CN 109217511 A CN109217511 A CN 109217511A
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- China
- Prior art keywords
- steel plate
- magnet
- rotor
- rotor core
- radially inner
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- 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
- H02K1/2786—Outer rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The present invention provides the manufacturing method of rotor, motor and rotor, and motor is included rotor, can be rotated centered on central axis；And stator, rotation driving is carried out to rotor.Rotor includes rotor core, annularly surrounds the central axis vertically extended and is made of stacked steel plate；And multiple magnet, they are circumferentially arranged.Multiple magnet are set on the medial surface of the radially inner side of rotor core.Rotor core has the inside from the radially inner side of rotor core towards radially inner side protruding portion outstanding.Protruding portion includes the downside protruding portion for the axial downside for being set to the axis upper side tabs to the upper side of magnet and being set to magnet.Interval between axial end face of the protruding portion opposed faces opposed in the axial direction with the axial end face of magnet in at least one party in upper side tabs and downside protruding portion with magnet becomes larger with towards radially inner side.
Description
Technical field
The present invention relates to the manufacturing methods of rotor, motor and rotor.
Background technique
In the past, such as Japanese Unexamined Patent Publication 2012-217320 bulletin, there is known be made of laminated electromagnetic steel plate
The motor of the outer-rotor type of permanent magnet is fixed on rotor core.In Japanese Unexamined Patent Publication 2012-217320 bulletin, in order to
Inhibit the axial offset of permanent magnet, and is provided with triangle on the electromagnetic steel plate of lowest part in laminated electromagnetic steel plate
The permanent magnet fixed position of shape.A part of permanent magnet fixed position is in the shape leant out to the concave groove portion of rotor core
Shape.
But in Japanese Unexamined Patent Publication 2012-217320 bulletin, permanent magnet fixed position is only arranged at laminated electromagnetic steel
The axial lower side of plate, therefore, it is impossible to which the both sides of side and axial downside inhibit the offset of permanent magnet in the axial direction.In addition, depositing
In following problem: when permanent magnet is fixed to rotor core, radially, permanent magnet is against permanent magnet fixed position
On, accordingly, it is difficult to install permanent magnet along permanent magnet fixed position to the medial surface of rotor core.
Summary of the invention
The purpose of the present invention is to provide the rotor of the offset in the axial direction for being able to suppress or preventing magnet, motor and
The manufacturing method of rotor.
The rotor of illustration of the invention has rotor core and multiple magnet.Rotor core annularly surrounds along the vertical direction
It the central axis of extension and is made of stacked steel plate.Magnet circumferentially arranges.Multiple magnet are set to the radial direction of rotor core
On the medial surface of inside.Rotor core has the inside from the radially inner side of rotor core towards radially inner side protrusion outstanding
Portion.Protruding portion includes the lower pleurapophysis for the axial downside for being set to the axis upper side tabs to the upper side of magnet and being set to magnet
Portion out.The protruding portion opposed in the axial direction with the axial end face of magnet at least one party in upper side tabs and downside protruding portion
Opposed faces become larger with the interval between the axial end face of magnet with towards radially inner side.
The motor of illustration of the invention includes above-mentioned rotor, can be pivoted about with central axis；And it is fixed
Son carries out rotation driving to rotor.
The manufacturing method of the rotor of illustration of the invention has follow steps: the step of forming rotor core, the rotor iron
Core annularly surrounds the central axis vertically extended and is made of stacked steel plate；And it is inside in the diameter of rotor core
The step of multiple magnet are set on the medial surface of side.The step of forming rotor core has follow steps: being laminated in the axial direction more
The step of a cricoid 1 steel plate；The distance radially until the medial surface to central axis of radially inner side is formed than the 1st
The step of steel plate small the 2nd steel plate and 3 steel plate；The step of 2 steel plate is laminated on the upside of the axial direction of the 1st steel plate；And the 1st
The step of axial 3 steel plate of downside stacking of steel plate.In the step of magnet is arranged, each magnet is set to the 2nd steel plate
Between the inner end of the radially inner side of the inner end of radially inner side and the 3rd steel plate.In the step of forming the 2nd steel plate and 3 steel plate
In, the inner end of the radially inner side of the steel plate of the 2nd steel plate and at least one party in the 3rd steel plate is pressed by the accessory with inclined surface
To deforming, the 2nd face is formed on the 1st axial face of the direction of the steel plate of at least one party, the 2nd face is with towards radially inner side
And towards the face with the contrary side of the 1st face institute direction in the axial direction.In the step of 2 steel plate is laminated and stacking the 3rd
In at least one party of the step of steel plate, the 2nd faces the 1st steel plate side in the axial direction.
The manufacturing method of the rotor of illustration according to the present invention, motor and rotor, is able to suppress or prevents magnet
Offset in axial direction.
The present invention can be more clearly understood that referring to attached drawing by the detailed description of the preferred embodiment for the present invention below
Above-mentioned and other feature, element, step, features and advantages.
Detailed description of the invention
Fig. 1 is the perspective view for showing the structural example of ceiling fan.
Fig. 2 is the cross-sectional view for showing the structural example of motor.
Fig. 3 is the perspective view for being fixed with the rotor core of magnet.
Fig. 4 A is the longitudinal section view from the rotor core circumferentially observed.
Fig. 4 B be from end on observation to rotor core sectional elevation.
Fig. 5 is the exploded perspective view for showing the structural example of shell of storage rotor core.
Fig. 6 is the exploded perspective view for showing the other structures example of shell of storage rotor core.
Fig. 7 A is the concept map for being illustrated to rotor core formation process.
Fig. 7 B be for the 2nd steel plate and the 3rd steel plate to the axial sides for being layered in multiple 1st steel plates formation process into
The concept map of row explanation.
Specific embodiment
Hereinafter, being illustrated referring to attached drawing to embodiment illustrated of the invention.
In addition, in the present specification, in the motor 110 of ceiling fan 100, the direction parallel with central axis CA is known as
" axial direction ".Moreover, the slave stator core 21 in axial direction is known as " axial upside " towards the direction of bearing 3, it will be from 3 direction of bearing
The direction of stator core 21 is known as " axial downside ".In addition, in the surface of each structural element, it will be towards axis face to the upper side
Referred to as " upper surface " will be known as " lower surface " towards the face of axial downside.
In addition, the direction vertical with central axis CA is known as " radial direction ", by the rotation side centered on central axis CA
To referred to as " circumferential direction ".Moreover, the direction towards central axis CA in radial direction is known as " radially inner side ", central axis will be far from
The direction of CA is known as " radial outside ".Moreover, will be known as towards the side of radially inner side in the side of each structural element
" medial surface " will be known as " lateral surface " towards the side of radial outside, will be known as " peripheral side " towards circumferential side.
In addition, the address in direction described above and face be not offered as positional relationship when being assembled in actual equipment and
Direction etc..
Fig. 1 is the cross-sectional view for showing the structural example of ceiling fan 100.Ceiling fan 100 has motor 110 and blade 120
Air supply device.Blade 120 can be pivoted about with central axis CA, and blade 120 is installed on motor 110.Motor 110 makes
Blade 120 rotates.In addition, in Fig. 1, the quantity of blade 120 is 3, but the case where be not limited to the illustration, can be 1 or
Multi-disc other than person 3.In addition, in the present embodiment, motor 110 is the brushless of outer-rotor type possessed by ceiling fan 100
DC motor.
Next, being illustrated to the structure of motor 110.Fig. 2 is the cross-sectional view for showing the structural example of motor 110.In addition,
In Fig. 2, motor 110 is cut off by the inclusion of the section of central axis CA.
As shown in Fig. 2, motor 110 includes rotor 1, it can be centered on the central axis CA vertically extended
Rotation；Stator 2 carries out rotation driving to rotor 1；And bearing 3.
As shown in Fig. 2, rotor 1 has rotor core 11, multiple magnet 12, adhering part 13 and shell 14.In addition,
Each structural element of rotor 1 and the manufacturing method of rotor 1 is explained later.
Stator 2 has stator core 21, insulating part 22, coil part 23 and axis 24.Stator core 21 is, for example, by along axis
The iron core member constituted to the electromagnetic steel plate of stacking, it is opposed with the magnet 12 of rotor 1 radially.Insulating part 22 is, for example, to utilize
The insulating element of resin material covers at least part of stator core 21.Coil part 23 across insulating part 22 by winding
It is constituted in the conducting wire of stator core 21.Axis 24 is the component of the tubular axially extended.Stator core 21 is installed on axis 24.
Bearing 3 is installed between the shell 14 of rotor 1 and axis 24, and the bearing of rotor 1 can be rotated relative to axis 24.
Next, being illustrated to rotor core 11, magnet 12 and adhering part 13.Fig. 3 is fixed with magnet 12
The perspective view of rotor core 11.Fig. 4 A is the longitudinal section view from the rotor core 11 circumferentially observed.Fig. 4 B is from end on observation
The sectional elevation of the rotor core 11 arrived.In addition, Fig. 4 A shows the section of the line A-A along Fig. 3, Fig. 4 B shows the line B-B along Fig. 3
Section.
Rotor core 11 annularly surrounds the central axis CA vertically extended, after being laminated with electromagnetic steel plate etc.
The stacked steel plate 15 stated is constituted.Rotor core 11 has annular portion 111, protruding portion 112, protrusion 113 and protrusion 114.
Annular portion 111 is in the ring-type centered on central axis CA.The radially inner side of the annular portion 111 of rotor core 11
Medial surface includes multiple rotor core medial surface 11a.Rotor core medial surface 11a is the region of fixed magnet 12, with each magnetic
The aftermentioned magnet lateral surface 12a towards radial outside of iron 12 is opposed radially.Outside rotor core medial surface 11a and magnet
Side 12a is plane parallel to each other.Since magnet lateral surface 12a and rotor core medial surface 11a are parallel to each other, energy
It is enough to improve the counter electromotive force of the motor 110 in the case where the installation to motor 110 of rotor 1.In addition, with magnet lateral surface 12a and
The case where rotor core medial surface 11a is curved surface is compared, and the deterioration of the yield rate of the magnet 12 in manufacturing process is able to suppress.Example
Such as, it if rotor core medial surface 11a is curved surface, needs to process magnet 12, and magnet lateral surface 12a is made to become edge
The curved surface of the shape of rotor core medial surface 11a, therefore, with it is above-mentioned for plane the case where compared with, magnetic in manufacturing process
The yield penalty of iron 12.
Protruding portion 112 is prominent towards radially inner side from the inside of the radially inner side of rotor core 11 there are multiple.More specifically
For, protruding portion 112 is prominent from annular portion 111 to radially inner side.Protruding portion 112 includes that upper side tabs 1121 and downside are prominent
Portion 1122.Upper side tabs 1121 are set to the axial upside of magnet 12.Downside protruding portion 1122 is set to the axial direction of magnet 12
Downside.In addition, in the present embodiment, the upper side tabs 1121 of quantity identical as magnet 12 and quantity identical as magnet 12
The case where downside protruding portion 1122 arranges in the circumferential, but the structure of protruding portion 112 is not limited to the illustration.On for example, it may be
Side protruding portion 1121 and the internal diameter of at least one party in downside protruding portion 1122 ring-type smaller than the internal diameter of annular portion 111.Alternatively,
The quantity of upper side tabs 1121 and the protruding portion of at least one party in downside protruding portion 1,122 112 can also be than the number of magnet 12
Amount is few.
In addition, protruding portion opposed faces 112a opposed in the axial direction with the axial end face 12b of magnet 12 in protruding portion 112 is
Inclined surface.Therefore, the interval between protruding portion opposed faces 112a and the axial end face 12b of magnet 12 with towards radially inner side and
Become larger.In addition, in the present embodiment, the protruding portion opposed faces 112a of 1122 both sides of upper side tabs 1121 and downside protruding portion
For inclined surface.More specifically, the lower surface of upper side tabs 1121 and the upper surface of downside protruding portion 1122 are and axial end
Interval between the 12b of face is with the inclined surface to become larger towards radially inner side.It, can also be with it is however not limited to the case where illustration
The protruding portion opposed faces 112a for being the side in upper side tabs 1121 and downside protruding portion 1122 is inclined surface.
In other words, as long as axial direction at least one party in upper side tabs 1121 and downside protruding portion 1122 with magnet 12
Interval between the end face 12b opposed in the axial direction coaxial end face 12b of protruding portion opposed faces 112a is with towards radially inner side
And become larger.
In this case, by be set to the axis of magnet 12 to the upper side upper side tabs 1121 and magnet 12 can be set to
The downside protruding portion 1122 of axial downside inhibit or prevent the axial offset of magnet 12.
In addition, when magnet 12 is fixed to rotor core 11, it can be by magnet 12 along the protruding portion for becoming inclined surface
Opposed faces 112a is inserted between protruding portion 112.Therefore, it can be readily inserted into magnet 12, also can easily be done magnet
Positioning in 12 axial direction.
In addition, in the present embodiment, the circumferential lengths of upper side tabs 1121 and the circumferential direction of downside protruding portion 1122 are long
It spends same with the circumferential lengths of magnet 12.It is however not limited to the case where illustration, as long as the circumferential lengths of upper side tabs 1121
It is more than or equal to the circumferential lengths of magnet 12 at least one party in the circumferential lengths of downside protruding portion 1122.In this case,
More easily inhibit or prevent the axial offset of magnet 12.In addition, as described later, when in protruding portion opposed faces 112a and magnetic
In the case where being provided with adhering part 13 between iron 12, as long as the circumferential direction of the protruding portion 112 with protruding portion opposed faces 112a
Length is more than the circumferential lengths of magnet 12, it will be able to inhibit or prevent the adhering part 13 from crossing protruding portion in the axial direction
112 and lean out the outside of rotor core 11.In addition, opposed in the axial direction with the axial end face 12b of magnet 12 in protruding portion 112
Protruding portion opposed faces 112a become inclined surface, the axial end face 12b of protruding portion opposed faces 112a and magnet 12 is with angle
Mode separate.Therefore, it is easy to keep adhering part 13 by surface tension.
Protrusion 113 between adjacent magnet 12 from the inside of the radially inner side of the annular portion 111 of rotor core 11 towards
Radially inner side is prominent.In this case, it can inhibit or prevent magnetic by being set to the protrusion 113 of the circumferential two sides of magnet 12
The circumferential offset of iron 12.
In addition, opposed protrusion opposed faces 113a becomes inclined surface in the circumferential with magnet 12 in protrusion 113.Therefore, convex
Interval between the circumferential circumferential end faces 12c of the direction of portion opposed faces 113a and magnet 12 becomes larger with towards radially inner side.
It in this case, can be by magnet 12 along as inclined surface as described above when by the setting of magnet 12 to rotor core 11
The protrusion opposed faces 113a of protrusion 113 is inserted between protrusion 113.Therefore, in the circumferential direction that can easily be done magnet 12
Positioning.In addition, in the present embodiment, the protrusion opposed faces 113a both sides of the circumferential two sides of protrusion 113 become as described above
Inclined surface.It is however not limited to which the case where illustration, be also possible to the protrusion opposed faces of at least side in the circumferential direction of protrusion 113
113a becomes inclined surface as described above.
Protrusion 113 can also be formed in a part in the axial direction of rotor core 11.In the present embodiment, turn in composition
In the stacked steel plate 15 of sub- iron core 11 be formed with protrusion 113 on magnet 12 radially opposed steel plate.That is, in rotor iron
The axis of core 11 is to the upper side to be set to upper end and at least 1 block of steel plate the (such as the aftermentioned 2nd with upper side tabs 1121
Steel plate 152) and the axial downside of rotor core 11 be set to lower end and at least 1 piece with downside protruding portion 1122
On steel plate, protrusion 113 is not formed.In addition, with magnet 12 radially opposed steel plate for example with aftermentioned 1st steel plate 151
It is corresponding.At least 1 block of steel plate with upper side tabs 1121 is for example corresponding with aftermentioned 2nd steel plate 152.With downside protruding portion
1122 at least 1 block of steel plate is for example corresponding with aftermentioned 3rd steel plate 153.
The outside of protrusion 114 from the radial outside of the annular portion 111 of rotor core 11 is prominent towards radial outside, and edge
It is axially extending.In addition, in the present embodiment, the quantity of protrusion 114 is 4, but the case where be not limited to the illustration, can also be with
Single or 4 other than it is multiple.
Multiple magnet 12 are set on the medial surface of the radially inner side of the annular portion 111 of rotor core 11, and on the inside of this
It is circumferentially arranged on face.
Adhering part 13 is set between the annular portion 111 of rotor core 11 and each magnet 12, and multiple magnet 12 are consolidated
Due to rotor core 11.
More specifically, as shown in Figure 4 A, adhering part 13 is set to the magnet lateral surface 12a and rotor of each magnet 12
Between iron core medial surface 11a, multiple magnet 12 are fixed in annular portion 111.
In addition, as shown in Figure 4 A, the axial end face 12b that adhering part 13 is also provided at each magnet 12 is opposed with protruding portion
Between the 112a of face.Axial end face 12b is the upper and lower surfaces of each magnet 12, in the axial direction with protruding portion opposed faces 112a
It is opposed.In this case, can by relative to magnet 12 and become inclined surface protruding portion opposed faces 112a and axial end face 12b it
Between gap be used as adhering part 13 reserve tank, so that multiple magnet 12 are fixed on protruding portion 112.
In addition, as shown in Figure 4 B, adhering part 13 is also provided at the circumferential end faces 12c and protrusion opposed faces of each magnet 12
Between 113a.Circumferential end faces 12c is the end face in the circumferential direction of each magnet 12, opposed in the circumferential with protrusion opposed faces 113a.
In this case, the gap between the protrusion opposed faces 113a of inclined surface can be become by circumferential end faces 12c and relative to magnet 12
Multiple magnet 12 are fixed on protrusion 113 by the reserve tank as adhering part 13.In addition, the circumferential end faces 12c of each magnet 12
It is angularly separated with protrusion opposed faces 113a band, is easy to keep adhering part 13 by surface tension as a result,.
Next, being illustrated to shell 14.Shell 14 have upside housing section 14a, tubular bearing cage 14b with
And downside housing section 14c (referring to Fig. 2).Fig. 5 is the exploded perspective view for showing the structural example of shell 14 of storage rotor core 11.
In addition, for ease of observation structure, omitting the diagram of downside housing section 14c in Fig. 5.
Upside housing section 14a is annular in shape when from the downside of axial direction.Bearing cage 14b is from upside housing section 14a's
Upside extends the inner peripheral of radially inner side in the axial direction.It is internally provided with bearing 3 in bearing cage 14b, axis 24 is inserted in axis
It holds in 3.Downside housing section 14c is installed in the axial downside of upside housing section 14a, on the upside of covering under the axial direction of housing section 14a
The lower end of side.
In addition, the upside housing section 14a of shell 14 has the canister portion 142 of recess portion 141 and tubular.Recess portion 141 is in central axis
Upside is recessed the center portion for the upside housing section 14a that line CA is passed through in the axial direction, and stores rotor core 11 in inside.Recessed
The bottom surface in portion 141 is provided with the opening communicated with bearing cage 14b.
From the bottom surface of recess portion 141, downside extends canister portion 142 in the axial direction.In recess portion 141, rotor core 11 is accommodated in canister portion
In 142 and it is fixed.Canister portion 142 has the groove portion 143 of quantity identical as protrusion 114 (being 4 in Fig. 5).Groove portion 143
It is recessed from the inside of the radially inner side of canister portion 142 towards radial outside, and axially extends.More specifically, in this embodiment party
In formula, groove portion 143 radially penetrates through canister portion 142, the underpart opening in the axial direction of canister portion 142.
When rotor core 11 is accommodated in canister portion 142, at least part of protrusion 114 is inserted in groove portion 143.It is logical
It crosses in the groove portion 143 for the canister portion 142 that the protrusion 114 of rotor core 11 is inserted in shell 14, rotor core 11 can be prevented
Position relative to shell 14 deviates in the circumferential.In addition, even if recess portion 141 and canister portion 142 are set by machining etc.
It is placed on shell 14, groove portion 143 can be also set to the inside of canister portion 142 in the case where not interfering the machining to handle
On face.
In addition, rotor core 11 is accommodated in the case where construction in canister portion 142 is not limited to the illustration of Fig. 5.Fig. 6 is to show receipts
Receive rotor core 11 shell 14 other structures example exploded perspective view.It dashes forward as shown in fig. 6, being also possible to canister portion 142 and having
Portion 144 is played, rotor core 11 has groove portion 115.Moreover, it can be, when rotor core 11 is received into canister portion 142, dash forward
At least part for playing portion 144 is inserted into groove portion 115.In addition, protrusion 144 is set to the diameter of canister portion 142 in Fig. 6
It is prominent from canister portion 142 to radially inner side on medial surface inwardly.In addition, groove portion 115 is set to the annular portion of rotor core 11
On the lateral surface of 111 radial outside, it is recessed and axially extends to radially inner side.In this case, by by shell 14
Protrusion 144 is inserted in the groove portion 115 of rotor core 11, can prevent rotor core 11 relative to the position of shell 14 in circumferential direction
Upper offset.
Next, being illustrated to an example of the manufacturing method of rotor 1.The manufacturing method of rotor 1 includes rotor core shape
At process, magnet fixed step and installation procedure.
Fig. 7 A is the concept map for being illustrated to rotor core formation process.Fig. 7 B is for being layered in multiple
The concept map that 2nd steel plate 152 of the axial sides of 1 steel plate 151 and the formation process of the 3rd steel plate 153 are illustrated.In rotor iron
In core formation process, rotor core 11 is formed, which annularly surrounds the central axis CA vertically extended
And it is made of stacked steel plate 15.Rotor core formation process has the 1st~the 4th process.
In the 1st process, as shown in Figure 7 A, cricoid 1st steel plate 151 is formed and along axially stacked multiple 1st steel plates
151.More specifically, the 1st process has stamping procedure and lamination process.In stamping procedure, such as pass through electromagnetic steel plate
Punch process and form multiple cricoid 1st steel plates 151.In addition, the inner peripheral of the radially inner side in the 1st steel plate 151 of formation
It is formed with the convex portion 15b for constituting protrusion 113.In addition, being formed in the outer peripheral edge of the radial outside of the 1st steel plate 151 of formation
Constitute the protrusion 15c of protrusion 114.In lamination process, each 1st steel plate 151 is by along axially stacked.At this point, each
The circumferential position of the convex portion 15b of 1st steel plate 151 is consistent, and the circumferential position of protrusion 15c is consistent.In other words, each 1st
The convex portion 15b of steel plate 151 is axially aligned, and protrusion 15c is also axially aligned.
In the 2nd process, as shown in Figure 7 B, the 2nd steel plate 152 and the 3rd steel plate 153 are formed.More specifically, the 2nd process
Manufacturing procedure is forged with stamping procedure and face.
Cricoid steel plate 150 is formed in stamping procedure, such as through the punch process of electromagnetic steel plate.In addition, in steel
The inner peripheral of the radially inner side of plate 150 is formed with the protrusion 15a for constituting protruding portion 112.In addition, in the radial direction of steel plate 150
The outer peripheral edge in outside is formed with the protrusion 15c for constituting protrusion 114.In addition, out of, protrusion 15a radially inner side
Radial distance D2, D3 until end to central axis CA is than the rotor iron between the adjacent convex portion 15b of the 1st steel plate 151
The radial distance D1 until slave medial surface 151a to central axis CA in core 11 is small.In addition, medial surface 151a constitutes rotor iron
In-core side 11a.
It is forged in working process in face, the protrusion 15a quilt of the steel plate 150 as the 2nd steel plate 152 and the 3rd steel plate 153
Accessory edge with inclined surface axially presses to deform.As a result, on the 1st axial face 150a of the direction of steel plate 150
It is formed with the 2nd face 150b.2nd face 150b is corresponding with the protruding portion opposed faces 112a of inclined surface is become in protruding portion 112.2nd
Face 150b is with towards radially inner side and towards the inclination with the contrary side of the 1st face 150a institute direction in the axial direction
Face.
In addition, in the present embodiment, using the protruding portion 112 of rotor core 11, there are multiple and circumferentially arrange
Therefore structure in the stamping procedure of the 2nd process, is formed with multiple protruding portion in the inner peripheral of steel plate 150 and divides 15a.But
In the case where the protruding portion 112 of rotor core 11 is annular in shape, in the above-mentioned steel plate for being used as the 2nd steel plate 152 and the 3rd steel plate 153
150 inner peripheral does not form protrusion 15a.
In addition, in the present embodiment, in rotor formation process, being provided with the steel plate 150 of the 2nd face 150b for the 2nd
153 both sides of steel plate 152 and the 3rd steel plate, but the case where be not limited to the illustration, it can be used for the 2nd steel plate 152 and the 3rd steel plate 153
In a side.In this case, another party in the 2nd steel plate 152 and the 3rd steel plate 153, which is directly used in the 2nd process, passes through punching
The steel plate pressing process and being formed.
In the 3rd process, as shown in Figure 7 A, stacked steel plate 150 is made on the upside of the axial direction for the 1st steel plate 151 that stacking is got up
For the 2nd steel plate 152.At this point, quilt in the state of being formed in the 2nd face 150b of protrusion 15a towards on the downside of axial direction of steel plate 150
Stacking is got up.At this point, the circumferential direction of the protrusion 15c of the circumferential position and the 1st steel plate 151 of the protrusion 15c of the steel plate 150
Position consistency.In other words, the protrusion 15c of the protrusion 15c of the 1st steel plate 151 and the steel plate 150 as the 2nd steel plate 152
It is axially aligned.
In the 4th process, as shown in Figure 7 A, stacked steel plate 150 is made on the downside of the axial direction for the 1st steel plate 151 that stacking is got up
For the 3rd steel plate 153.At this point, quilt in the state of being formed in the 2nd face 150b of protrusion 15a towards on the upside of axial direction of steel plate 150
Stacking is got up.At this point, the circumferential direction of the protrusion 15c of the circumferential position and the 1st steel plate 151 of the protrusion 15c of the steel plate 150
Position consistency.In other words, the protrusion 15c of the protrusion 15c of the 1st steel plate 151 and the steel plate 150 as the 3rd steel plate 153
It is axially aligned.
In magnet fixed step, setting is more on the medial surface of the radially inner side for multiple 1st steel plates 151 that stacking is got up
A magnet 12.At this point, each magnet 12 is set to the 2nd face for being layered in axis the 2nd steel plate 152 to the upper side of the 1st steel plate 151
Between 150b and axially the 2nd face 150b of the 2nd steel plate 152 of downside for being layered in the 1st steel plate 151.
In installation procedure, rotor core 11 is incorporated in the canister portion 142 of shell 14 (referring to Fig. 5).At this point, protrusion
114 at least part is inserted into groove portion 143.
As described above, the manufacturing method of rotor 1 has follow steps: the step of forming rotor core 11, should
Rotor core 11 annularly surrounds the central axis CA vertically extended and is made of stacked steel plate 15；And in rotor
The step of multiple magnet 12 are set on the medial surface of the radially inner side of iron core 11.The step of forming rotor core 11 has following step
It is rapid: the step of multiple cricoid 1st steel plate 151 are laminated in the axial direction；It is formed from the inner end of radially inner side to central axis CA
Until 2nd steel plate 152 smaller than the 1st steel plate 151 of distance D2, D3 radially and the step of the 3rd steel plate 153；In the 1st steel plate
The step of 151 axial the 2nd steel plate 152 of upside stacking；And the 3rd steel plate 153 is laminated on the downside of the axial direction of the 1st steel plate 151
Step.In the step of magnet 12 are arranged, each magnet 12 is arranged at the inner end and the 3rd of the radially inner side of the 2nd steel plate 152
Between the inner end of the radially inner side of steel plate 153.In the step of forming the 2nd steel plate 152 and the 3rd steel plate 153, the 2nd steel plate 152
It is pressed to become by the accessory with inclined surface with the inner end of the radially inner side of the steel plate of at least one party in the 3rd steel plate 153
Shape forms the 2nd face 150b on the 1st axial face 150a of the direction of the steel plate of at least one party.2nd face 150b is with towards diameter
Inwardly and towards the face with the contrary side of the 1st face 150a institute direction in the axial direction.The 2nd steel plate 152 is being laminated
In at least one party in the step of the 3rd steel plate 153 of step and stacking, axial 151 side of the 1st steel plate of the 2nd face 150b direction.
To the axis for being layered in the 1st steel plate 151 the 2nd steel plate to the upper side 152 and the axial downside for being layered in the 1st steel plate 151
The 3rd steel plate 153 at least one party steel plate radially inner side inner end implement face forge working process.By at this
Reason, the 2nd face 150b become inclined surface.2nd face 150b is opposed in the axial direction with magnet 12.That is, protruding portion opposed faces can be made
Interval between 112a and the axial end face 12b of magnet 12 becomes larger with towards radially inner side.Therefore, in setting magnet 12
In step, magnet 12 can be inserted between protruding portion 112 along the protruding portion opposed faces 112a for becoming inclined surface.Therefore,
It can be readily inserted into magnet 12, also can easily be done the positioning in the axial direction of magnet 12.In addition, the 2nd steel plate 152 and
The inner end of the radially inner side of 3 steel plates 153 is corresponding with protruding portion 112.
More than, embodiments of the present invention are illustrated.In addition, the scope of the present invention is not limited to above-mentioned embodiment party
Formula.The present invention is subject to various changes in the range of capable of not departing from the purport of invention to implement.In addition, being said in above embodiment
Bright item can in the range of not generating contradiction suitably any combination.
For example, in the above-described embodiment, motor 110 is outer rotor possessed by ceiling fan 100 in the present embodiment
The brushless DC motor of type.It is however not limited to the case where these illustrations, the dress other than ceiling fan 100 is also can be set in motor 110
It sets, motor 110 is also possible to inner-rotor type motor.In addition, in the case where motor 110 is inner-rotor type, the structure of motor 110
The position radially of element is opposite sometimes.For example, multiple magnet 12 are arranged in the case where motor 110 is inner-rotor type
In on the lateral surface of the radial outside of rotor core 11, the protruding portion 112 of rotor core 11 is from the outside of annular portion 111 towards diameter
It protrudes outward.Moreover, the protruding portion opposed faces 112a of upper side tabs 1121 and at least one party in downside protruding portion 1122
Interval between axial end face 12b becomes larger with towards radial outside.
The present invention for example for rotor (being provided with magnet on the radial side of rotor core) motor and
The manufacturing method of rotor is useful.
Claims (10)
1. a kind of rotor, includes
Rotor core annularly surrounds the central axis vertically extended and is made of stacked steel plate；And it is multiple
Magnet, they are circumferentially arranged,
On the medial surface for the radially inner side that multiple magnet are set to the rotor core,
The rotor is characterized in that,
The rotor core has from the inside of the radially inner side of the rotor core towards radially inner side protruding portion outstanding,
The protruding portion is comprising being set to the axis upper side tabs to the upper side of the magnet and being set to the axis of the magnet
To the downside protruding portion of downside,
In at least one party in the upper side tabs and the downside protruding portion in the axial direction with the axial end face of the magnet
Opposed protruding portion opposed faces become larger with the interval between the axial end face of the magnet with towards radially inner side.
2. rotor according to claim 1, which is characterized in that
Also there is adhering part between the protruding portion opposed faces and the axial end face.
3. rotor according to claim 1 or 2, which is characterized in that
At least one party in the circumferential lengths of the upper side tabs and the circumferential lengths of the downside protruding portion is more than or equal to institute
State the circumferential lengths of magnet.
4. rotor according to claim 1 or 2, which is characterized in that
The medial surface of the radially inner side of the rotor core includes the magnet outside towards radial outside with each magnet
Face opposed multiple rotor core medial surfaces radially,
The magnet lateral surface and the rotor core medial surface are planes parallel to each other.
5. rotor according to claim 1 or 2, which is characterized in that
The rotor core also have between the adjacent magnet from the inside of the radially inner side of the rotor core towards
Radially inner side protrusion outstanding.
6. rotor according to claim 5, which is characterized in that
In the protrusion with the magnet opposed protrusion opposed faces circumferential end circumferential with the direction of the magnet in the circumferential
Interval between face becomes larger with towards radially inner side.
7. rotor according to claim 1 or 2, which is characterized in that
The rotor also has shell,
The shell includes
Recess portion along axial depression and stores the rotor core；And
The canister portion of the tubular axially extended, the rotor core is fixed in the canister portion within the recess,
Cartridge has the groove portion for being recessed and axially extending to radial outside,
The rotor core also has from the outside of radial outside towards radial outside protrusion outstanding,
At least part of the protrusion is inserted into the groove portion.
8. rotor according to claim 1 or 2, which is characterized in that
The rotor also has shell,
The shell includes
Recess portion along axial depression and stores the rotor core；And
The canister portion of the tubular axially extended, the rotor core is fixed in the canister portion within the recess,
Cartridge has from the inside of radially inner side towards radially inner side protrusion outstanding,
The rotor core also has the groove portion for being recessed and axially extending to radially inner side on the lateral surface of radial outside,
At least part of the protrusion is inserted into the groove portion.
9. a kind of motor comprising:
Rotor described in any one in claim 1~8 can be rotated centered on the central axis；And
Stator carries out rotation driving to the rotor.
10. a kind of manufacturing method of rotor, which is characterized in that have follow steps:
The step of forming rotor core, which annularly surrounds the central axis vertically extended and by being laminated
Steel plate is constituted；And
In the step of multiple magnet are arranged on the medial surface of the radially inner side of the rotor core,
The step of formation rotor core, has follow steps:
The step of multiple cricoid 1 steel plates are laminated in the axial direction；
Formed distance radially until from the inner end of radially inner side to the central axis it is smaller than the 1st steel plate the
The step of 2 steel plates and 3 steel plate；
The step of 2 steel plate is laminated on the upside of the axial direction of the 1st steel plate；And
The step of 3 steel plate is laminated on the downside of the axial direction of the 1st steel plate,
In the step of magnet is arranged, each magnet is set to the inner end of the radially inner side of the 2nd steel plate
Between the inner end of the radially inner side of the 3rd steel plate,
In the step of forming the 2nd steel plate and 3 steel plate, the 2nd steel plate and at least one party's in the 3rd steel plate
The inner end of the radially inner side of steel plate is pressed and deformed by the accessory with inclined surface, in the direction of the steel plate of at least one party
Form the 2nd face on the 1st axial face, the 2nd face be with towards radially inner side and towards in the axial direction with the 1st face institute
The face of the contrary side of direction,
The step of 2 steel plate is laminated and be laminated 3 steel plate the step of at least one party in, the described 2nd facing towards
Axial the 1st steel plate side.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-129730 | 2017-06-30 | ||
| JP2017129730A JP2019013115A (en) | 2017-06-30 | 2017-06-30 | Rotor, motor, and method of manufacturing rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109217511A true CN109217511A (en) | 2019-01-15 |
Family
ID=64991602
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810599547.6A Pending CN109217511A (en) | 2017-06-30 | 2018-06-12 | The manufacturing method of rotor, motor and rotor |
| CN201820904813.7U Expired - Fee Related CN208623413U (en) | 2017-06-30 | 2018-06-12 | Rotor and motor |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820904813.7U Expired - Fee Related CN208623413U (en) | 2017-06-30 | 2018-06-12 | Rotor and motor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2019013115A (en) |
| CN (2) | CN109217511A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210159744A1 (en) * | 2019-11-25 | 2021-05-27 | Fanuc Corporation | Rotor including end plate disposed on end face of rotor core and electric motor including rotor |
| CN114123588A (en) * | 2021-09-30 | 2022-03-01 | 东风汽车集团股份有限公司 | Rotor assembly of external rotor hub motor |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019013115A (en) * | 2017-06-30 | 2019-01-24 | 日本電産株式会社 | Rotor, motor, and method of manufacturing rotor |
| CN116094217A (en) * | 2022-09-30 | 2023-05-09 | 广东肇庆德通有限公司 | Commercial large ceiling fan of outer rotor permanent magnet synchronous motor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH104642A (en) * | 1996-06-14 | 1998-01-06 | Sankyo Seiki Mfg Co Ltd | Motor |
| CN101043165A (en) * | 2006-03-07 | 2007-09-26 | 日本电产株式会社 | Motor |
| CN102386698A (en) * | 2010-08-31 | 2012-03-21 | 珠海格力电器股份有限公司 | Surface-mounted type permanent magnet rotor structure |
| JP2013169131A (en) * | 2012-02-17 | 2013-08-29 | Nsk Ltd | Rotor for brushless motor, and electric power steering device |
| CN104321953A (en) * | 2012-05-24 | 2015-01-28 | 法雷奥电机设备公司 | Electric machine rotor and associated permanent magnet holding device |
| CN208623413U (en) * | 2017-06-30 | 2019-03-19 | 日本电产株式会社 | Rotor and motor |
-
2017
- 2017-06-30 JP JP2017129730A patent/JP2019013115A/en active Pending
-
2018
- 2018-06-12 CN CN201810599547.6A patent/CN109217511A/en active Pending
- 2018-06-12 CN CN201820904813.7U patent/CN208623413U/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH104642A (en) * | 1996-06-14 | 1998-01-06 | Sankyo Seiki Mfg Co Ltd | Motor |
| CN101043165A (en) * | 2006-03-07 | 2007-09-26 | 日本电产株式会社 | Motor |
| CN102386698A (en) * | 2010-08-31 | 2012-03-21 | 珠海格力电器股份有限公司 | Surface-mounted type permanent magnet rotor structure |
| JP2013169131A (en) * | 2012-02-17 | 2013-08-29 | Nsk Ltd | Rotor for brushless motor, and electric power steering device |
| CN104321953A (en) * | 2012-05-24 | 2015-01-28 | 法雷奥电机设备公司 | Electric machine rotor and associated permanent magnet holding device |
| CN208623413U (en) * | 2017-06-30 | 2019-03-19 | 日本电产株式会社 | Rotor and motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210159744A1 (en) * | 2019-11-25 | 2021-05-27 | Fanuc Corporation | Rotor including end plate disposed on end face of rotor core and electric motor including rotor |
| CN114123588A (en) * | 2021-09-30 | 2022-03-01 | 东风汽车集团股份有限公司 | Rotor assembly of external rotor hub motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019013115A (en) | 2019-01-24 |
| CN208623413U (en) | 2019-03-19 |
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