CN206922623U - A kind of external rotor permanent magnet direct-driven servo motor - Google Patents
A kind of external rotor permanent magnet direct-driven servo motor Download PDFInfo
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- CN206922623U CN206922623U CN201720854129.8U CN201720854129U CN206922623U CN 206922623 U CN206922623 U CN 206922623U CN 201720854129 U CN201720854129 U CN 201720854129U CN 206922623 U CN206922623 U CN 206922623U
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- bearing
- rotating shaft
- permanent magnet
- bolt
- servo motor
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Abstract
The utility model discloses a kind of external rotor permanent magnet direct-driven servo motor, including：Rotor assembly and stator module, the rotor assembly include：Upper end cover, outer rotor and the rotating shaft of upper end cover lower surface are fixedly connected on, is fixed with magnet on the inside of the outer rotor, the stator module includes：Winding, bearing block and the bearing being set in turn in from outside to inside between magnet and rotating shaft, the bearing block lower end is fixedly connected with motor base, the motor base upper surface is provided with a code-disc read head, and the rotating shaft lower surface is adapted to the code-disc read head and is provided with an axial reflecting light code disc.Motor provided by the utility model so that external rotor permanent magnet direct-driven servo motor can use the bearing for being built in motor, reduce the whole height of motor；And by the cooperation of axial reflecting light code disc and code-disc read head, axial reflecting light code disc is made slabbing, leeway is left to the further height for reducing motor and volume.
Description
Technical field
It the utility model is related to permagnetic synchronous motor technical field, more particularly to a kind of external rotor permanent magnet directly-drive servo
Motor.
Background technology
In the prior art, external rotor permanent magnet direct-driven servo motor generally speaking has following two structures：One kind is that rotor exists
Outside, including stator；Another kind be stator outside, in rotor is outer.And the external rotor permanent magnet directly-drive servo electricity with outer-rotor structure
Machine is supported using crossed roller bearing, and crossed roller bearing is installed on the upper end of motor, has thickeied the height of motor so that electricity
The mounting condition of machine is restricted.
Therefore, prior art has yet to be improved and developed.
Utility model content
The technical problems to be solved in the utility model is, for the drawbacks described above of prior art, there is provided a kind of outer rotor
Permanent magnet direct-drive servomotor, it is intended to it is highly big to solve motor in the prior art so that what the mounting condition of motor was restricted asks
Topic.
Technical scheme is as follows used by the utility model solves technical problem：
A kind of outer rotor external rotor permanent magnet direct-driven servo motor, including rotor assembly and stator module, the rotor assembly
Including：Upper end cover, outer rotor and the rotating shaft of upper end cover lower surface are fixedly connected on, magnet is fixed with the inside of the outer rotor, its
In, the stator module includes：Winding, bearing block and the bearing being set in turn in from outside to inside between magnet and rotating shaft, it is described
Bearing block lower end is fixedly connected with motor base, and the motor base upper surface is provided with a code-disc read head, the rotating shaft lower end
Face is adapted to the code-disc read head and is provided with an axial reflecting light code disc, and the code-disc read head is used to read axial reflecting type light
Scale on code disc.
In preferred scheme, described external rotor permanent magnet direct-driven servo motor, wherein, it is described to be concentrated around group selection for fractional-slot
Winding.
In preferred scheme, described external rotor permanent magnet direct-driven servo motor, wherein, the bearing is provided with two, respectively
For upper bearing (metal) and lower bearing, the bearing block inner side, which is extended, a spacing preiection；The upper bearing (metal) lower end is supported in described
Spacing preiection, upper end fit in upper end cover；The lower bearing upper surface is limited in the spacing preiection, and lower surface is supported in described
Rotating shaft.
In preferred scheme, described external rotor permanent magnet direct-driven servo motor, wherein, the rotating shaft outer rim, which is extended, one
Support ring, the lower bearing lower surface are supported in the support ring, and the axial reflecting light code disc fitting is fixed on described
Support ring lower surface, the code-disc read head is immediately below the axial reflecting light code disc.
In preferred scheme, described external rotor permanent magnet direct-driven servo motor, wherein, the stator module by and only by described
Winding, bearing block, upper bearing (metal), lower bearing, motor base and code-disc read head composition.
In preferred scheme, described external rotor permanent magnet direct-driven servo motor, wherein, set between the rotating shaft and motor base
A sealing ring is equipped with, the rotating shaft is provided with a seal groove, is contained in the seal groove on the inside of the sealing ring, outside fits in
The motor base.
In preferred scheme, described external rotor permanent magnet direct-driven servo motor, wherein, the rotor assembly by and only by described
Upper end cover, outer rotor, magnet, rotating shaft, sealing ring and axial reflecting light code disc composition.
In preferred scheme, described external rotor permanent magnet direct-driven servo motor, wherein, the outer rotor lower end, which is extended, to be had
One rotation is raised, and the motor base upper end adaptation rotation projection is provided with a rotary steering groove, the rotation it is raised and
Rotary steering groove is all in ring-like.
In preferred scheme, described external rotor permanent magnet direct-driven servo motor, wherein, the external rotor permanent magnet directly-drive servo electricity
Machine also includes：Connection component, it is made up of the first bolt, the second bolt and the 3rd bolt；
The upper end cover is adapted to first bolt and set with outer rotor via first bolt connection, the upper end cover
There is the first accepting groove, the outer rotor is adapted to first bolt and is provided with the first screwed hole；
The upper end cover is adapted to the second bolt and is provided with second with rotating shaft via second bolt connection, the upper end cover
Accepting groove, the rotating shaft are adapted to second bolt and are provided with the second screwed hole；
The motor base is adapted to the 3rd bolt with bearing block via the 3rd bolt connection, the motor base
The 3rd accepting groove is provided with, the bearing block is adapted to the 3rd bolt and is provided with the 3rd screwed hole.
In preferred scheme, described external rotor permanent magnet direct-driven servo motor, wherein, it is provided with first on the inside of the upper end cover
Bearing hole, the rotating shaft are provided with second bearing hole, and the diameter of the first axle bearing bore is identical with the diameter in second bearing hole.
External rotor permanent magnet direct-driven servo motor provided by the utility model, as a result of being fixed on upper end cover lower surface
Outer rotor and rotating shaft, winding, bearing block and the bearing being set in turn between outer rotor and rotating shaft, and be arranged under bearing
The motor base at end, the code-disc read head of motor base upper surface is arranged at, the axial reflecting light code being adapted to code-disc read head
Disk；So that external rotor permanent magnet direct-driven servo motor can use the bearing for being built in motor, it is not necessary to external crossed roller bearing, reduce
The whole height of motor；And read by axial reflecting light code disc with the high-precision code-disc exported with subdivision or sine and cosine
The cooperation of head, makes axial reflecting light code disc to make slabbing, is left to the further height for reducing motor and volume
Leeway.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model external rotor permanent magnet direct-driven servo motor preferred embodiment.
Drawing reference numeral explanation：1st, upper end cover, 2, outer rotor, 3, rotating shaft, 4, bearing block, 6, motor base, 7, motor stator
Iron core and winding, 8, magnet, 9, axial reflective code-disc, 10, code-disc read head, 11, upper bearing (metal), 12, lower bearing 13, sealing ring,
14th, glue groove.
Embodiment
To make the purpose of this utility model, technical scheme and advantage clearer, clear and definite, develop simultaneously implementation referring to the drawings
The utility model is further described example.It should be appreciated that specific embodiment described herein is only explaining this reality
With new, it is not used to limit the utility model.
Fig. 1 is the structural representation of the utility model external rotor permanent magnet direct-driven servo motor preferred embodiment.
As shown in figure 1, external rotor permanent magnet direct-driven servo motor described in the present embodiment（It may be simply referred to as motor）Including：Rotor set
Part, stator module and connection component, in further preferred embodiment, motor by and be only made up of three, that is to say, that remove
Outside three components, not comprising other any parts.Certainly, connection component can be not provided with, and be substituted by other connected modes,
Such as snap connection.
The rotor assembly includes：Upper end cover 1, fit in the outer peripheral outer rotor 2 in the lower surface of upper end cover 1, fitting
Rotating shaft 3 in the lower surface inward flange of upper end cover 1, it is arranged at the axial reflecting light code disc 9 of the lower end of rotating shaft 3, is adhered to
The magnet 8 of the inner side of outer rotor 2 and the sealing ring 13 for being sticked in the lower end of rotating shaft 3.It is described in further preferred embodiment
Between upper end cover and outer rotor can also die cast processing it is integral, the rotor assembly by and be only made up of said structure, i.e.,
Said structure does not increase and not subtracted, and without any changes is preferred embodiment of the utility model in structure.Wherein, sealing ring 13 can
In being not included in, but sealing effectiveness can be influenceed, in order to be adapted to the sealing ring 13, the rotating shaft 3 is provided with a seal groove, described
The inner side of sealing ring 13 is contained in the seal groove, and outside fits in the motor base 6；The setting of seal groove is close in order to fix
The position of seal 13, stabilizes it and is sticked in seal groove.Magnet 8 can be connected to outer rotor 2 using other modes.
The lower end outer rim of the upper end cover 1 is provided with the upper end inner hole sleeve of rotation boss outer rotor 2 mounted in outside, then via the
One bolt connection, the lower end inner edge of the upper end cover 1 are provided with the upper end of rotation concave station rotating shaft 3 and are sleeved on inside, then via second
Bolt connection, the upper end cover 1 are adapted to first bolt and the second bolt and are respectively arranged with the first accepting groove and the second collecting
Groove, the outer rotor 2 are adapted to first bolt and are provided with the first screwed hole, and the rotating shaft 3 is adapted to second bolt and set
There is the second screwed hole.First bolt and the second bolt are the important component of connection component, are respectively arranged with multiple
Every being arranged at upper end cover 1.Can according to the set location of the first accepting groove, the first screwed hole, the second accepting groove and the second screwed hole
Know, in assembling, the first bolt is tightened against outer rotor 2 after upper end cover 1, and similarly, the second bolt is tightened after upper end cover 1
In rotating shaft 3.By controlling the Tightening moment for installing gap and the second bolt of rotating shaft 3 and the length direction of bearing block 4 to upper and lower axle
Clamp force is given rotor assembly is not had running clearance when rotating between holding a plus axial direction.
In the utility model preferred embodiment, axial reflective gratings code-disc（In annulus sheet）9, in rotating shaft 3
Installation accuracy is to improve the key of this outer rotor external rotor permanent magnet direct-driven servo motor control accuracy, axially anti-when motor rotates
Penetrate formula grating encoder circular ring plate axial runout and raster center radially wobble it is small as far as possible, in this specific embodiment
Glue groove 14 is provided with rotating shaft 3, the non-reflecting surface of axial reflective gratings code-disc circular ring plate abuts against the lower flat of rotating shaft 3
Face, bonded at glue groove 14 with rotating shaft 3, reduce influence of the bondline thickness change to installation accuracy.
The external diameter of the upper end cover 1 is identical with the external diameter of outer rotor 2, and its internal diameter is then identical with the internal diameter of rotating shaft 3, that is,
Say, the inner side of upper end cover 1 is provided with through hole i.e. first axle bearing bore, and the rotating shaft 3 is provided with second bearing hole, the first axle
The diameter of bearing bore is identical with the diameter in second bearing hole.
The lower end of outer rotor 2 extends downward with rotation projection, and the upper end of motor base 6 is adapted to the rotation
Projection is provided with a rotary steering groove, and the rotation is raised and rotary steering groove is all in ring-like.Prolong upwards the upper end of outer rotor 2
Stretch and be provided with a snap fit tabs, and the upper end cover 1 is adapted to the snap fit tabs and is provided with a slot, the snap fit tabs by
The outer rim of outer rotor 2 extends internally, and accounts for the 1/4 to 1/3 of the upper end cover size of outer rotor 2, snap fit tabs are inwardly the first spiral shell again
The set location of bolt.
The axial reflecting light code disc 9 is preferably provided with circlewise, the scale strip of reflected light is portrayed thereon, for making
For the foundation of detection motor anglec of rotation speed.
The stator module includes：Winding 7, bearing block 4 and the bearing that ecto-entad is set gradually, and be fixedly connected on
The motor base 6 of the lower end of bearing block 4, it is arranged at the motor base 6 and the code-disc being adapted to axial reflecting light code disc 9
Read head 10.The bearing be provided with up and down two, in further preferred embodiment, the stator module by and only by described
Winding 7, bearing block 4, upper bearing (metal) 11, lower bearing 12, motor base 6 and code-disc read head 10 form.
The winding 7 is made up of stator core and coiling two parts, and coiling uses fractional-slot concentratred winding.The winding 7
Rotary gap is provided between magnet 8, for preventing magnet 8 from mutually being rubbed with winding 7.
The inner side of bearing block 4, which is extended, a spacing preiection；The lower end of upper bearing (metal) 11 is supported in the limit convex
Rise, upper end fits in upper end cover 1；The upper surface of lower bearing 12 is limited in the spacing preiection, and lower surface is supported in described turn
Axle 3.That is, the bearing block 4 is in 90 ° " convex " font of turning clockwise.
The outer rim of rotating shaft 3, which is extended, a support ring, and the lower surface of lower bearing 12 is supported in the support ring, the axle
The support ring lower surface is fixed on to the fitting of reflecting light code disc 9, it is reflective that the code-disc read head 10 is located at the axial direction
Immediately below photoelectric code disk 9.
The upper end of the motor base 6 is provided with rotation boss bearing block 4 and is sleeved on above, then connects via the 3rd bolt
Connect, the motor base 6 is adapted to the 3rd bolt and is provided with the 3rd accepting groove, and the bearing block 4 is adapted to the 3rd bolt
It is provided with the 3rd screwed hole.
In the utility model preferred embodiment, the connection component is i.e. by first bolt, the second bolt and the 3rd
Bolt forms.
It can be processed in the utility model preferred embodiment, between the upper end cover and outer rotor with die cast integrally,
Eliminate the corresponding bolt of connection component first.
In the utility model preferred embodiment, described bearing preferentially selects angular contact bearing, detects the motor anglec of rotation
Degree, magnetic grid, multipolar resolver etc. can also be used.
External rotor permanent magnet direct-driven servo motor provided by the utility model compared with prior art, mainly has following two
Emphasis improves, and first, the utility model is using being built in motor（It is built-in herein to refer to be arranged at upper end cover, outer rotor and motor
The inner chamber that base is formed）Bearing, and prior art uses crossed roller bearing, is positioned in outside motor, necessarily increases
Its height, then the limited equipment of installing space can not just use this kind of motor；Secondth, the utility model passes through axially reflective
Photoelectric code disk, and be set to sheet, the motor anglec of rotation is then detected by the code-disc read head immediately below it, can be with
The overall dimensions of motor are accomplished smaller.
It should be appreciated that application of the present utility model is not limited to above-mentioned citing, those of ordinary skill in the art are come
Say, can according to the above description be improved or converted, all these modifications and variations should all belong to the appended power of the utility model
The protection domain that profit requires.
Claims (10)
1. a kind of external rotor permanent magnet direct-driven servo motor, including rotor assembly and stator module, the rotor assembly include：Upper end
Lids, outer rotor and the rotating shaft of upper end cover lower surface are fixedly connected on, magnet is fixed with the inside of the outer rotor, it is characterised in that
The stator module includes：Winding, bearing block and the bearing being set in turn in from outside to inside between magnet and rotating shaft, the bearing
Seat lower end is fixedly connected with motor base, and the motor base upper surface is provided with a code-disc read head, and the rotating shaft lower surface is fitted
The code-disc read head is provided with an axial reflecting light code disc, the code-disc read head is used to read axial reflecting type photoelectric code
Scale on disk.
2. external rotor permanent magnet direct-driven servo motor according to claim 1, it is characterised in that it is described around group selection be fraction
Groove concentratred winding.
3. external rotor permanent magnet direct-driven servo motor according to claim 2, it is characterised in that the bearing is provided with two
Individual, respectively upper bearing (metal) and lower bearing, being extended on the inside of the bearing block has a spacing preiection；The upper bearing (metal) lower end support
In the spacing preiection, upper end fits in upper end cover；The lower bearing upper surface is limited in the spacing preiection, lower surface support
In the rotating shaft.
4. external rotor permanent magnet direct-driven servo motor according to claim 3, it is characterised in that the rotating shaft outer rim extension is set
A support ring is equipped with, the lower bearing lower surface is supported in the support ring, and the axial reflecting light code disc fitting is fixed
In the support ring lower surface, the code-disc read head is immediately below the axial reflecting light code disc.
5. external rotor permanent magnet direct-driven servo motor as claimed in any of claims 2 to 4, it is characterised in that described
Stator module by and be only made up of the winding, bearing block, upper bearing (metal), lower bearing, motor base and code-disc read head.
6. external rotor permanent magnet direct-driven servo motor according to claim 1, it is characterised in that the rotating shaft and motor base
Between be provided with a sealing ring, the rotating shaft is provided with a seal groove, and the seal groove, outside are contained on the inside of the sealing ring
Fit in the motor base.
7. external rotor permanent magnet direct-driven servo motor according to claim 6, it is characterised in that the rotor assembly by and only
It is made up of the upper end cover, outer rotor, magnet, rotating shaft, sealing ring and axial reflecting light code disc.
8. external rotor permanent magnet direct-driven servo motor according to claim 1, it is characterised in that the outer rotor lower end extension
Rotation projection is provided with, the motor base upper end adaptation rotation projection is provided with a rotary steering groove, the rotation
Raised and rotary steering groove is all in ring-like.
9. external rotor permanent magnet direct-driven servo motor according to claim 1, it is characterised in that the external rotor permanent magnet directly drives
Servomotor also includes：Connection component, it is made up of the first bolt, the second bolt and the 3rd bolt；
Via first bolt connection, the upper end cover is adapted to first bolt and is provided with for the upper end cover and outer rotor
One accepting groove, the outer rotor are adapted to first bolt and are provided with the first screwed hole；
The upper end cover is adapted to the second bolt and is provided with the second collecting with rotating shaft via second bolt connection, the upper end cover
Groove, the rotating shaft are adapted to second bolt and are provided with the second screwed hole；
The motor base is adapted to the 3rd bolt and set with bearing block via the 3rd bolt connection, the motor base
There is the 3rd accepting groove, the bearing block is adapted to the 3rd bolt and is provided with the 3rd screwed hole.
10. external rotor permanent magnet direct-driven servo motor according to claim 1, it is characterised in that set on the inside of the upper end cover
It is equipped with first axle bearing bore, the rotating shaft is provided with second bearing hole, and the diameter of the first axle bearing bore is straight with second bearing hole
Footpath is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720854129.8U CN206922623U (en) | 2017-07-14 | 2017-07-14 | A kind of external rotor permanent magnet direct-driven servo motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720854129.8U CN206922623U (en) | 2017-07-14 | 2017-07-14 | A kind of external rotor permanent magnet direct-driven servo motor |
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| Publication Number | Publication Date |
|---|---|
| CN206922623U true CN206922623U (en) | 2018-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720854129.8U Active CN206922623U (en) | 2017-07-14 | 2017-07-14 | A kind of external rotor permanent magnet direct-driven servo motor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107222078A (en) * | 2017-07-14 | 2017-09-29 | 深圳市东方伺服数控技术有限公司 | A kind of external rotor permanent magnet direct-driven servo motor |
| WO2019010933A1 (en) * | 2017-07-14 | 2019-01-17 | 深圳市东方伺服数控技术有限公司 | External rotor permanent magnet servomotor |
| CN113422461A (en) * | 2021-06-24 | 2021-09-21 | 浙江定能电机科技有限公司 | Self-buffering permanent magnet motor |
-
2017
- 2017-07-14 CN CN201720854129.8U patent/CN206922623U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107222078A (en) * | 2017-07-14 | 2017-09-29 | 深圳市东方伺服数控技术有限公司 | A kind of external rotor permanent magnet direct-driven servo motor |
| WO2019010934A1 (en) * | 2017-07-14 | 2019-01-17 | 深圳市东方伺服数控技术有限公司 | External rotor permanent magnet direct-drive servomotor |
| WO2019010933A1 (en) * | 2017-07-14 | 2019-01-17 | 深圳市东方伺服数控技术有限公司 | External rotor permanent magnet servomotor |
| CN107222078B (en) * | 2017-07-14 | 2023-08-29 | 深圳市东方伺服数控技术有限公司 | Outer rotor permanent magnet direct-drive servo motor |
| CN113422461A (en) * | 2021-06-24 | 2021-09-21 | 浙江定能电机科技有限公司 | Self-buffering permanent magnet motor |
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