CN204290535U - External rotor device and the motor comprising it - Google Patents
External rotor device and the motor comprising it Download PDFInfo
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- CN204290535U CN204290535U CN201420505771.1U CN201420505771U CN204290535U CN 204290535 U CN204290535 U CN 204290535U CN 201420505771 U CN201420505771 U CN 201420505771U CN 204290535 U CN204290535 U CN 204290535U
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- magnet
- casing
- external rotor
- rotor device
- inwall
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Abstract
The utility model relates to a kind of external rotor device and comprises its motor.The casing that this external rotor device comprises tubular and the retainer be fixedly installed on the inwall of casing, the inwall of this retainer and described casing forms the uniform even number mounting groove of circumference, at mounting groove internal fixtion, magnet is set, the lateral surface of magnet contacts with the medial surface of casing, and the polarity of adjacent magnet is different.In addition rotor arrangement does not need to use special frock position magnet and install.Thus, simplify external rotor device and comprise its installation procedure of motor, improve operating efficiency, saved assembly cost.
Description
Technical field
The utility model relates to external rotor device and comprises its motor.
Background technology
Modern electric automobile drives and tends to Direct driver always, can save mechanical gear transmission, eliminates the vibrating noise of mechanical gear, reduces mechanical loss, obtains higher efficiency, energy savings.Outer-rotor permanent magnet motor be able to realize this and directly drive function, particularly for new-energy automobile, has become the field that automobile industry has much prediction.
External rotor permanent magnet motor be structurally rotor outside, stator is interior.And rotor permanent magnet mounting means many employings surface-adhered type structure, be pasted into casing inner surface by permanent magnet is uniform.Permanent magnet is installed and is usually adopted special tooling to carry out location and the installation of magnet steel, bonds to permanent magnet by permanent magnet special glue.Concrete grammar is first rule by magnetic structure at chassis cavity arc surface, installs positioning tool, then loaded in casing by permanent magnet installed surface gluing according to line.After adhesive curing, remove frock, rotor assembling is complete.Therefore, adopt current mounting means to manufacture motor to have that complex procedures, efficiency are low, remove the problems such as frock difficulty after adhesive curing.
Utility model content
In order to solve above-mentioned part or all of technical problem, the utility model aims to provide a kind of external rotor device and comprises its motor.In addition rotor arrangement does not need special magnet to install positioning tool, simplifies installation procedure, the packaging efficiency of external rotor is improved greatly.Further, its structure is simple, is convenient to realize.
According to one side of the present utility model, a kind of external rotor device is provided, comprises:
The casing of tubular,
Be fixedly installed on the retainer on the inwall of casing, the inwall of retainer and described casing forms the uniform even number mounting groove of circumference,
Be fixed on the magnet in mounting groove, the lateral surface of magnet contacts with the medial surface of casing, and the polarity of adjacent magnet is different.
Thus, be that magnet positions by mounting groove, avoid using special frock position magnet and install.Thus, simplify installation procedure, improve packaging efficiency, save assembly cost.
In one embodiment, retainer comprise the circumference that the inwall along casing is arranged support ring and from support ring axially extended tooth, the inwall of adjacent tooth and described casing defines mounting groove.By this set, the inwall of casing can define mounting groove for installing magnet easily, and be conducive to the installation carrying out magnet.And the structure of retainer is simple, is beneficial to realization.
In one embodiment, be arranged on the trim ring of the energy limit magnet of the openend of mounting groove, trim ring is fixedly connected with casing, and has the horizontal part with magnet end contact, and the vertical component effect contacted with the medial surface of magnet be fixedly connected with horizontal part.By this set, magnet can be fixed in mounting groove more firmly, ensure that the installation reliability of magnet.
In one embodiment, horizontal part arranges the connecting portion extended radially outwardly, connecting portion is contained in the link slot be arranged on the inwall of casing.In a preferred embodiment, by screw, connecting portion is fixedly installed on link slot.By this set, trim ring can be facilitated and be stably fixed on casing.
In one embodiment, the size radially of magnet is greater than the size radially of tooth.By this set, after by the installation of external rotor device, the medial surface of magnet will protrude from the medial surface of tooth, thus makes the air gap of motor not by the impact of retainer.
In one embodiment, magnet coordinates side to have the circular arc mated with the inner wall shape of casing with casing.By this set, easily magnet can be installed in mounting groove, and coordinate with the inwall of casing, ensure the stability of installing simultaneously.
In one embodiment, the axial direction of each mounting groove arranges at least two magnets.By this set, can make external rotor device in running, eddy current is little, good heat dissipation, thus ensures effective utilization in magnetic field.
In one embodiment, the inwall of casing arranges radial outstanding limiting section, and limiting section is configured to contact with the support ring of retainer.By this design, make limiting section be that retainer carries out axial location, thus ensure the installation accuracy of external rotor device.This locate mode is very simple simultaneously, is easy to realize.
According to another aspect of the present utility model, provide a kind of motor, comprise above-mentioned external rotor device.
Compared with prior art, the utility model has the advantage of, this external rotor apparatus structure is simple, low cost of manufacture.Do not need special positioning tool just can complete the installation of magnet simultaneously, simplify installation procedure, improve packaging efficiency.Meanwhile, because retainer and trim ring are to the restriction of magnet, strengthen the reliability that magnet is fixing.In addition, after magnet assembling, the air gap of motor is unaffected, ensures the fail safe that motor runs.
Accompanying drawing explanation
Also will be described in more detail the utility model with reference to accompanying drawing based on embodiment hereinafter.Wherein:
Fig. 1 shows the stereogram according to external rotor device of the present utility model.
Fig. 2 shows the stereogram of casing and retainer.
In the drawings, identical component is indicated by identical Reference numeral.Accompanying drawing is not according to the scale of reality.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
Fig. 1 show schematically show according to external rotor device 100 of the present utility model.External rotor device 100 comprises the casing 1 of tubular, is fixedly installed on the retainer 2 on the inwall of casing 1.Wherein, retainer 2 and the inwall of casing 1 form the uniform even number mounting groove 21 of circumference.At mounting groove 21 internal fixtion, magnet 3 is installed.Further, the lateral surface of magnet 3 contacts with the medial surface of casing 1, and the polarity of simultaneously adjacent magnet 3 is different.
Positioned for magnet 3 by the retainer 2 be arranged in casing 1, magnet 3 can be accurately promptly installed in mounting groove 21, thus, simplify installation procedure, improve operating efficiency, save the cost of assembling external rotor device 100.
As shown in Figure 2, retainer 2 comprises support ring 22 and axially extended tooth 23 from support ring 22.Support ring 22 along casing 1 inwall circumferentially, adjacent tooth 23 defines mounting groove 21 with the inwall of casing 1.Retainer 2 and casing 1 interference fit.Such as, again retainer 2 can be put into by first heating casing 1, ensureing that retainer 2 is fixed in casing 1.
Be fixed on after in casing 1 at retainer 2, carry out N, S polarity mark at the end face of casing 1, get fritter magnet 3 and smear magnet special glue, and on the arcuation sidewall of mounting groove 21 gluing.In axial direction be pushed into by magnet 3 in mounting groove 21, because magnet 3 and casing 1 exist suction, after therefore loosing one's grip, magnet 3 can not move.Then along the circumferential direction magnet 3 is installed.It should be noted that the polarity of adjacent magnet 3 is different.Complete until the circumference of casing 1 is installed magnet 3.Due to, the axial direction of each mounting groove 21 needs arrange two magnets 3, as shown in Figure 1.Install after the magnet 3 one of the bottom land of mounting groove 21 encloses, then along the medial surface of casing 1, magnet 3 is installed successively, until by the circumferential installation of casing 1.Make that magnet 3 is installed so very convenient, simple to operate.
It should be noted that, for ensureing effective utilization in magnetic field, the axial direction of each mounting groove 21 also can arrange multiple magnet 3 as required.
Installing magnet 3 and after glue is fixing, the trim ring 4 of energy limit magnet 3 be set at the openend of mounting groove 21, as shown in Figure 1.Trim ring 4 comprises the horizontal part 41 with the end contact of magnet 3, and the vertical component effect 42 contacted with the medial surface of magnet 3 be fixedly connected with horizontal part 41.Namely, the cross section of trim ring 4 is angled construction, and magnet 3 can be fixed in mounting groove 21 by more firmly, ensures the installation reliability of magnet 3.
According to the utility model, horizontal part 41 arranges the connecting portion 43 extended radially outwardly.Accordingly, the inwall of casing 1 is arranged in link slot 11.Treat that trim ring 4 is installed in casing 1, and connecting portion 43 is contained in after in link slot 11, by screw 5, connecting portion 43 is fixedly installed on link slot 11.In order to the stability connected, connecting portion 43 and link slot 11 can be uniform multiple in the circumference of casing 1.
In order to make the air gap of motor not by the impact of retainer 2, the size radially of magnet 3 is greater than the size radially of tooth 23.Thus, after by external rotor device 100 installation, the medial surface of magnet 3 will protrude from the medial surface of tooth 23.
In one embodiment, magnet 3 coordinates side to have the circular arc (not shown) of mating with the inner wall shape of casing 1 with casing 1.Thus, easily magnet 3 can be installed in mounting groove 21, and coordinate with the inwall of casing 1, be conducive to the installation stability ensureing magnet 3.
As shown in Figure 1, the inwall of casing 1 is arranged the limiting section 12 be used for for retainer 2 axial limiting.Limiting section 12 is configured to the excrescence radially-inwardly given prominence to by the inwall of casing 1.In installation process, retainer 2 puts into casing 1, and after ring 21 to be supported contacts with limiting section 12, retainer 2 is in place.The installation accuracy of external rotor device 100 is ensure that by this design.This locate mode is very simple simultaneously, is easy to realize.
Above-mentioned external rotor device 100 is particularly useful for motor.
Although be described the utility model with reference to preferred embodiment, when not departing from scope of the present utility model, various improvement can be carried out to it and parts wherein can be replaced with equivalent.The utility model is not limited to specific embodiment disclosed in literary composition, but comprises all technical schemes fallen in the scope of claim.
Claims (10)
1. an external rotor device, is characterized in that, comprising:
The casing of tubular,
Be fixedly installed on the retainer on the inwall of described casing, the inwall of described retainer and described casing forms the uniform even number mounting groove of circumference,
Be fixed on the magnet in described mounting groove, the lateral surface of described magnet contacts with the medial surface of described casing, and the polarity of adjacent described magnet is different.
2. external rotor device according to claim 1, it is characterized in that, described retainer comprise the circumference that the inwall along described casing is arranged support ring and from axially extended tooth described support ring, adjacent described tooth and the inwall of described casing define described mounting groove.
3. external rotor device according to claim 1 and 2, it is characterized in that, be arranged on the trim ring that can limit described magnet of the openend of described mounting groove, described trim ring is fixedly connected with described casing, and there is the horizontal part with described magnet end contact, and the vertical component effect contacted with the medial surface of described magnet be fixedly connected with described horizontal part.
4. external rotor device according to claim 3, is characterized in that, described horizontal part arranges the connecting portion extended radially outwardly, and described connecting portion is contained in the link slot on the inwall being arranged on described casing.
5. external rotor device according to claim 4, is characterized in that, is fixedly installed on described link slot by described connecting portion by screw.
6. external rotor device according to claim 2, is characterized in that, the size radially of described magnet is greater than the size radially of described tooth.
7. external rotor device according to claim 1 and 2, is characterized in that, described magnet coordinates side to have the circular arc mated with the inner wall shape of described casing with described casing.
8. external rotor device according to claim 1 and 2, is characterized in that, the axial direction of each described mounting groove arranges at least two described magnets.
9. external rotor device according to claim 1 and 2, is characterized in that, the inwall of described casing arranges radial outstanding limiting section, and described limiting section is configured to contact with the support ring of described retainer.
10. a motor, is characterized in that, comprises the external rotor device according to any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420505771.1U CN204290535U (en) | 2014-09-03 | 2014-09-03 | External rotor device and the motor comprising it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420505771.1U CN204290535U (en) | 2014-09-03 | 2014-09-03 | External rotor device and the motor comprising it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204290535U true CN204290535U (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420505771.1U Active CN204290535U (en) | 2014-09-03 | 2014-09-03 | External rotor device and the motor comprising it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204290535U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107888020A (en) * | 2017-12-11 | 2018-04-06 | 浙江联宜电机有限公司 | Can quick shutdown motor |
-
2014
- 2014-09-03 CN CN201420505771.1U patent/CN204290535U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107888020A (en) * | 2017-12-11 | 2018-04-06 | 浙江联宜电机有限公司 | Can quick shutdown motor |
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| GR01 | Patent grant |