CN104022587B - A kind of rotor and the technique being installed to the rotor in brshless DC motor - Google Patents
A kind of rotor and the technique being installed to the rotor in brshless DC motor Download PDFInfo
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- CN104022587B CN104022587B CN201410019216.2A CN201410019216A CN104022587B CN 104022587 B CN104022587 B CN 104022587B CN 201410019216 A CN201410019216 A CN 201410019216A CN 104022587 B CN104022587 B CN 104022587B
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- rotor
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- rotating shaft
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- magnet steel
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Abstract
The invention discloses a kind of rotor, in brshless DC motor, the brshless DC motor includes electric machine main shaft, stator, coil or winding, end cap and casing, the connector of radial direction is socketed with the electric machine main shaft, include electric machine main shaft, stator, coil or winding, end cap and casing, the connector of radial direction is socketed with the electric machine main shaft, its feature is, also include a rotor, the rotor is to be fixed firmly in the inside of permanent-magnet steel sub-assembly to reduce windage by permanent magnet, reduce power consumption, centrifugal action is prevented so that permanent-magnet steel comes off simultaneously, improve the security of rotor, and the permanent-magnet steel convenient disassembly in the rotor.The invention also discloses the technique being installed to the rotor in brshless DC motor, it is possible thereby to fast and accurately permanent-magnet steel is installed in rotor, it is convenient and swift, improve operating efficiency.
Description
Technical field
The present invention relates to the mounting process of a kind of rotor of brshless DC motor, and the rotor.
Background technology
Brshless DC motor is one kind of permanent magnetic synchronous electrical motor, and is not real direct current generator, English abbreviation
BLDC.Brushed DC motor is different from, brshless DC motor is without using mechanical brushgear, using square wave autocontrol permanent magnetism
Synchronous motor, replaces carbon brush commutator with Hall sensor, using neodymium iron boron as the permanent-magnet material of rotor, is compared in performance general
Traditional DC motor have great advantage.
Three-phase symmetrical star connection is made the stator winding of motor more, it is quite similar with threephase asynchronous.It is electronic
The permanent magnet magnetized is stained with the rotor of machine, in order to detect the polarity of motor rotor, in motor built with position sensing
Device.Driver is made up of power electronic device and integrated circuit etc., and its function is：Receive the startup, stopping, braking letter of motor
Number, to control the startup of motor, stop and braking；Receive position sensor signal and positive and negative rotaring signal, for controlling inversion
The break-make of each power tube of bridge, produces continuous torque；Receive speed command and feedback speed signal, for controlling and adjusting rotating speed；
Protection and display etc. are provided.
In the prior art, a kind of brushless dc is disclosed in Chinese invention patent prospectus 201210077133
Machine, including shell, drive end bearing bracket, rear end cap, motor shaft, rotor, permanent magnet, stator, the shell front side cutting ferrule drive end bearing bracket, shell
Rear side cutting ferrule rear end cap；It is fixed on the inside of fixed stator on the inside of socket motor shaft in the shell, the drive end bearing bracket, the rear end cap
It is provided with the outside of another stator, two stator in a rotor, the rotor inner wall and is provided with permanent magnet relatively respectively with two stators, its
Smooth rotation, internal vibration is relatively low, and noise decibel is low, and does not cut frequency sound, birdie.In this patent.Rotor is arranged on
The outside of stator, permanent magnet is arranged on the inwall of the rotor.
A kind of permanent-magnet brushless DC electric machine and for example is disclosed in Chinese invention patent prospectus 200810302124, by
P-m rotor, stator, coil or winding, end cap and casing composition, the p-m rotor be by the permanent magnet that is enclosed in rotating shaft and
Rotor rack constitute, the permanent magnet using multistage set of permanent magnets into.The permanent-magnet brushless DC electric machine is by adjusting the section of permanent magnet
Count to adjust effective permanent magnetism field intensity, so as to reach the purpose of regulation motor power；It is additionally, since and employs multisection type permanent magnetism
Body, each section of permanent magnet is comparatively just smaller, is not just allowed by centrifugal action fragile during work, improves permanent magnet
Service life.But, because permanent magnet is outside that rotor rack is pasted onto by adhesive, when rotor is in high rotating speed,
It is possible to the damage of permanent magnet can be caused.
On the fixed structure of permanent magnet, LG Electronics Inc. is in Chinese invention patent prospectus
A kind of rotor of brshless DC motor is disclosed in 200510009113, including one is rotatably disposed on stator inner periphery
Framework（Rotor rack i.e. disclosed in Chinese invention patent prospectus 200810302124）, diametrically with rule
Interval is connected to multiple rotor tooths on the excircle of framework, and the multiple magnet being fixed between rotor tooth, these magnet
Diametrically being arranged to aspectant side has identical polarity, wherein, rotor rack, rotor tooth and magnet are molds one
Rise, and the projection for preventing magnet from separating is formed with the inner and outer portions of rotor tooth, whole rotor tooth is by sintering magnetic
Powder is fabricated by.The rotor is that rotor is cast as one with magnet, is difficult disassembling, assembling and replacing.And motor can operationally produce heat
Amount, common permanent magnetism can demagnetize on the working environment more than 80 degree, and phenomenon of demagnetizing occurs for the magnet so allowed in rotor,
Change very inconvenient.
In general, permanent magnet on the brshless DC motor in above-mentioned patent, its rotor is bonded in rotor
Permanent magnet（Permanent-magnet steel sub-assembly）Lateral wall, or cast in the inside of rotor, be bonded in permanent magnetism in the permanent magnet of rotor
Body（Permanent-magnet steel sub-assembly）Lateral wall in the case of, in rotor high-speed rotation, permanent magnet above may be due to centrifugation
Power comes off, moreover, permanent-magnet steel is fitted in into outer wall, can cause windage, plus powerful consumption；Cast in the permanent magnet of rotor
Permanent magnet（Permanent-magnet steel sub-assembly）When internal, then the problem of disassembling, assembling and replacing is difficult can be caused.In addition, rotor of the prior art
Installation process is very cumbersome, it is necessary to which permanent-magnet steel is processed into and permanent magnet（Permanent-magnet steel sub-assembly）The shape of adaptation, such as, forever
Long magnet steel sub-assembly is columned, then needs to be processed into permanent-magnet steel into the circular arc matched with permanent-magnet steel sub-assembly outer wall
Shape, difficulty of processing is big, can also produce leftover pieces, waste raw material, improve cost.
The content of the invention
First technical problem to be solved by this invention provides one kind for the above-mentioned state of the art can be by permanent magnet
Internal rotor is fixed firmly in reduce power consumption, and the rotor of the brshless DC motor of convenient disassembly,
Second technical problem to be solved by this invention is to provide a kind of mounting process of above-mentioned rotor.
The technical scheme that the present invention is used by above-mentioned first technical problem of solution for：
A kind of rotor, in brshless DC motor, the brshless DC motor includes electric machine main shaft, stator, line
The connector of radial direction is socketed with circle or winding, end cap and casing, the electric machine main shaft,
The rotor main will be made up of permanent-magnet steel component with rotor fixed seat, and the rotor fixed seat is fixed on described
On connector；
The permanent-magnet steel component includes the permanent-magnet steel of rotating shaft, iron core and strip, and the rotating shaft is fixed on by bearing to be turned
Axially be socketed in sub- fixed seat, and in the rotating shaft it is cored, the iron core laminated into by annular punching silicon-steel it is cylindric, two
Hold end face by pressing plate tight, with offering punching by being welded and fixed, and on the pressing plate at rotating shaft cooperation in the middle of the pressing plate
The opening of groove.
Insert after permanent-magnet steel, the magnetic field of whole permanent-magnet steel component is that, to external radiation, one block of permanent-magnet steel or two pieces are forever
Magnet steel completely can not cover columned iron core certainly, therefore, as a further improvement, be offered at least on the iron core
Three punching grooves.
In order to reduce the magnetic field blind area of the generation of the space between permanent magnetism steel body, as further preferred, opened on the iron core
Provided with least four punching grooves.
Although the angle in theory, between two blocks of permanent-magnet steels is bigger, the space between them radiates the magnetic at place
The scope of field blind area is smaller, still, and rotor is rotation in real work, and magnetic field can be radiated above-mentioned in rotation process
In blind area, therefore in order to reduce cost as far as possible, as concrete technical scheme, the punching slot number amount is 4.
Preferably, the opening of 4 punching grooves is offered on the pressing plate, and the opening of 4 above-mentioned punching grooves is being pressed
Square distribution on plate.
As an improvement, the permanent-magnet steel is scribbled Nian Jie after inserting to punching groove in the permanent-magnet steel and pressing plate joint
Agent.
The technical scheme that the present invention is used by above-mentioned second technical problem of solution for：
A kind of technique being installed to the rotor in brshless DC motor, comprises the following steps：
1）Annular punching silicon-steel is laminated into cylindric, and be provided with the pressing plate of through hole cylindric steel with two pieces of centers
The top and bottom of piece are compressed and integrally welded so that pressing plate and cylindric steel disc constitute the iron core of rotor；
2）Punching groove is opened up out on iron core；
3）The rotating shaft of rotor is inserted to the centre bore of pressing plate, and to being welded at the cooperation of pressing plate and rotating shaft, by rotating shaft
The permanent-magnet steel component being welded into one with iron core；
4）Bearing is socketed in rotating shaft, then bearing block is installed in rotor fixed seat, then, is consolidated rotating shaft by bearing
Determine onto rotor fixed seat, in fixed process, pad sets lastblock corrugated gasket between bearing and bearing block；
5）Shaft fixing block is installed on the connector being connected with motor, so that the main shaft connection of rotor and motor
It is dynamic；
6）In the punching groove that the permanent-magnet steel of strip is inserted to rotor, then by bonding agent by the firm strong bond of permanent magnetism in rotor
In.
Preferably, in step 5）In, shaft fixing block is installed on connector by way of interference fit.
Compared with prior art, the advantage of the invention is that：It is the permanent-magnet steel component that permanent-magnet steel is fixed on to rotor
Inside, so in rotor high-speed rotation, permanent-magnet steel will not be occurred de- by the windage produced is rotated and centrifugal force be acted on
Fall, improve the security of rotor, reduce power consumption, in addition, permanent-magnet steel is strip in the present invention, process letter
It is single, many leftover pieces will not be also produced as arc-shaped permanent-magnet steel, cost, and convenient disassembly is reduced.
Brief description of the drawings
Fig. 1 is the brshless DC motor overall structure diagram of the embodiment of the present invention；
Fig. 2 is the rotor structure schematic diagram in the embodiment of the present invention；
Fig. 3 is the schematic diagram of magnetic field blind area in the embodiment of the present invention；
Fig. 4 is the fixed position figure of permanent-magnet steel in the embodiment of the present invention.
Embodiment
The embodiment of the present invention is described in further detail below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2, the present embodiment is a kind of brshless DC motor 1, includes electric machine main shaft 2, stator 3, coil
Or winding 4, end cap 5 and casing 6, the connector 2.1 of radial direction is socketed with the electric machine main shaft,
Also include rotor 7, the rotor main will be made up of permanent-magnet steel component 8 with rotor fixed seat 9, the rotor is consolidated
Reservation is fixed on described connector 2.1；
The permanent-magnet steel component includes the permanent-magnet steel 8.3 of rotating shaft, iron core 8.2 and strip, and the rotating shaft passes through bearing 8.4
It is fixed in rotor fixed seat 9, and is axially socketed with to offer on columned iron core 8.2, the iron core in the rotating shaft and is used to
Insert the punching groove 8.2.1 of the permanent-magnet steel.
Above-mentioned iron core is to be laminated into by annular silicon steel sheet 8.2.4 punching cylindric, and top and bottom are by pressing plate 8.2.2 handles
Tightly, opening 8.2.3 of the pressing plate centre with offering punching groove at rotating shaft cooperation by being welded and fixed, and on the pressing plate.
As shown in figure 3, having inserted after permanent-magnet steel, the magnetic field of whole permanent-magnet steel component is one block of permanent magnetism to external radiation
Steel or two blocks of permanent-magnet steels completely can not cover columned iron core certainly, therefore, as a further improvement, expand radiation area
At least three punching grooves must be offered on L1, the iron core.
In order to reduce the magnetic field blind area L2 of the generation of the space between permanent magnetism steel body, as further preferred, on the iron core
Have to open up at least four punching grooves, but while in theory, the angle between two blocks of permanent-magnet steels is bigger, they it
Between the space magnetic field blind area that radiates place scope it is smaller, however, rotor is rotation in real work, in rotation process
Middle magnetic field can be radiated in above-mentioned blind area L2, therefore in order to reduce cost as far as possible, it is described as concrete technical scheme
Punching groove 8.2.1 quantity is 4.
Preferably, the opening of 4 punching grooves is offered on the pressing plate, and the opening of 4 above-mentioned punching grooves is being pressed
Square distribution on plate.
As shown in figure 4, as an improvement, the permanent-magnet steel 8.3 is after inserting to punching groove, in the permanent-magnet steel and pressing plate phase
The place of connecing 8.3.1 scribbles bonding agent.
In the assembling process of above-mentioned this brshless DC motor, the mounting process of rotor includes following step in the motor
Suddenly：
1）Annular punching silicon-steel is laminated into cylindric, and be provided with the pressing plate of through hole cylindric steel with two pieces of centers
The top and bottom of piece are compressed and integrally welded so that pressing plate and cylindric steel disc constitute the iron core of rotor；
2）Punching groove is opened up out on iron core；
3）The rotating shaft of rotor is inserted to the centre bore of pressing plate, and to being welded at the cooperation of pressing plate and rotating shaft, by rotating shaft
The permanent-magnet steel component being welded into one with iron core；
4）Bearing 8.4 is socketed in rotating shaft, then bearing block 8.5 is installed in rotor fixed seat, then, will by bearing
Rotating shaft is fixed in rotor fixed seat, in fixed process, and pad sets lastblock corrugated gasket between bearing and bearing block
8.4.1；
5）Shaft fixing block is installed on the connector being connected with motor, so that the main shaft connection of rotor and motor
It is dynamic；
6）In the punching groove that the permanent-magnet steel of strip is inserted to rotor, then by bonding agent by the firm strong bond of permanent magnetism in rotor
In.
In practical operation, step 5）In shaft fixing block be installed to by way of interference fit on connector, i.e.,
Now open up the mounting hole that a size is slightly smaller than shaft fixing block bottom on the coupling, then heat connector, take advantage of its by
When thermal expansion aperture becomes big, the bottom of shaft fixing block is packed into mounting hole rapidly, after contraction to be cooled, connector is just with turning
Axle fixed seat is securely fixed together.
Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (1)
1. a kind of technique mounted the rotor in brshless DC motor, the brshless DC motor includes electric machine main shaft, determined
The connector of radial direction is socketed with son, coil or winding, end cap and casing, the electric machine main shaft, the rotor main will be by permanent
Magnetic steel component is constituted with rotor fixed seat, and the rotor fixed seat is fixed on described connector；
The permanent-magnet steel component include axially be socketed on the permanent-magnet steel of rotating shaft, iron core and strip, and the rotating shaft it is cored,
It is characterized in that：Comprise the following steps：
1）Annular punching silicon-steel is laminated into cylindric, and be provided with the pressing plate of through hole cylindric steel disc with two pieces of centers
Top and bottom are compressed and integrally welded so that pressing plate and cylindric steel disc constitute the iron core of rotor；
2）The opening that four punching grooves are offered on four punching grooves, pressing plate, the opening of four punching grooves are opened up out on iron core
The square distribution on pressing plate；
3）The rotating shaft of rotor is inserted to the centre bore of pressing plate, and to being welded at the cooperation of pressing plate and rotating shaft, by rotating shaft and iron
The permanent-magnet steel component that core is welded into one；
4）Bearing is socketed in rotating shaft, then bearing block is installed in rotor fixed seat, then, is fixed to rotating shaft by bearing
In rotor fixed seat, in fixed process, pad sets lastblock corrugated gasket between bearing and bearing block；
5）Shaft fixing block is installed on the connector being connected with motor, so that the main shaft linkage of rotor and motor, turns
Axle fixed seat is installed on connector by way of interference fit, i.e., open up on the coupling a size be slightly smaller than rotating shaft consolidate
The mounting hole of reservation bottom, then heats connector, take advantage of its expanded by heating aperture become it is big when, rapidly by the bottom of shaft fixing block
Portion is packed into mounting hole, after contraction to be cooled, together with connector is just securely fixed with shaft fixing block；
6）In the punching groove that the permanent-magnet steel of strip is inserted to rotor, then by bonding agent by the firm strong bond of permanent magnetism in the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410019216.2A CN104022587B (en) | 2014-01-16 | 2014-01-16 | A kind of rotor and the technique being installed to the rotor in brshless DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410019216.2A CN104022587B (en) | 2014-01-16 | 2014-01-16 | A kind of rotor and the technique being installed to the rotor in brshless DC motor |
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| Publication Number | Publication Date |
|---|---|
| CN104022587A CN104022587A (en) | 2014-09-03 |
| CN104022587B true CN104022587B (en) | 2017-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410019216.2A Active CN104022587B (en) | 2014-01-16 | 2014-01-16 | A kind of rotor and the technique being installed to the rotor in brshless DC motor |
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| CN (1) | CN104022587B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201774430U (en) * | 2010-07-29 | 2011-03-23 | 中山大洋电机制造有限公司 | Novel motor mechanism |
| CN202918084U (en) * | 2012-10-29 | 2013-05-01 | 大洋电机新动力科技有限公司 | Rotor assembly of permanent magnet synchronous motor |
| CN203761157U (en) * | 2014-01-16 | 2014-08-06 | 宁波市比尔迪赛电机有限公司 | Rotor of brushless DC motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003009491A (en) * | 2001-06-19 | 2003-01-10 | Yaskawa Electric Corp | Permanent magnet type brushless dc motor |
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2014
- 2014-01-16 CN CN201410019216.2A patent/CN104022587B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201774430U (en) * | 2010-07-29 | 2011-03-23 | 中山大洋电机制造有限公司 | Novel motor mechanism |
| CN202918084U (en) * | 2012-10-29 | 2013-05-01 | 大洋电机新动力科技有限公司 | Rotor assembly of permanent magnet synchronous motor |
| CN203761157U (en) * | 2014-01-16 | 2014-08-06 | 宁波市比尔迪赛电机有限公司 | Rotor of brushless DC motor |
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| Publication number | Publication date |
|---|---|
| CN104022587A (en) | 2014-09-03 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20181204 Address after: 315321 Xiaoxin Road 208, Xiaolin Town, Cixi City, Ningbo City, Zhejiang Province Patentee after: Cixi Feiteng Motor Co., Ltd. Address before: 315000 No. 125 Candun East Road, Candun Street, Cixi City, Ningbo City, Zhejiang Province Patentee before: Bill Di Sai Electric Machine Co., Ltd of Ningbo City |
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| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 315321 Xiaoxin Road 208, Xiaolin Town, Cixi City, Ningbo City, Zhejiang Province Patentee after: Feiteng precision transmission (Zhejiang) Co., Ltd Address before: 315321 Xiaoxin Road 208, Xiaolin Town, Cixi City, Ningbo City, Zhejiang Province Patentee before: Cixi Feiteng Motor Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |