CN204392040U - External rotor electric machine - Google Patents
External rotor electric machine Download PDFInfo
- Publication number
- CN204392040U CN204392040U CN201420819927.3U CN201420819927U CN204392040U CN 204392040 U CN204392040 U CN 204392040U CN 201420819927 U CN201420819927 U CN 201420819927U CN 204392040 U CN204392040 U CN 204392040U
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- CN
- China
- Prior art keywords
- electric machine
- hole
- external rotor
- power transmission
- transmission shaft
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Abstract
The utility model discloses a kind of external rotor electric machine, comprising: rotor sleeve, be formed with a container cavity; Stator core, is contained in rotor sleeve at least partly; Power transmission shaft, take first axle as rotating shaft and passes stator core at least partly; Rotor sleeve comprises: sleeve part, around formation container cavity; End cap portions, is positioned at sleeve part one end and one-body molded with sleeve part or be fixedly connected with; End cap portions is also provided with for first through hole of power transmission shaft through rotor sleeve; External rotor electric machine also comprises: stator coil, is wound on stator core and around power transmission shaft; Stator support, comprises the installation portion for installing stator core and the cradle portion supporting installation portion; The cable surface of stator coil is wrapped up by the first insulating barrier; Cradle portion is provided with the second through hole, and power transmission shaft passes the second through hole away from one end of end cap portions; The sidewall of cradle portion near the side of installation portion is provided with the second insulating barrier.External rotor electric machine good insulating of the present utility model, can be applicable to high pressure field.
Description
The utility model relates to a kind of motor, is specifically related to a kind of external rotor electric machine.
Background technology
Motor is divided into external rotor electric machine and inner rotor motor usually according to the relative position of rotor and stator, and wherein external rotor electric machine has saving space relatively, feature compact to design, and is more and more subject to extensive concern.But the poor insulativity of existing external rotor electric machine, mostly just can be applicable in the instrument of low pressure, makes the scope of application of external rotor electric machine be restricted like this.
Summary of the invention
For solving the deficiencies in the prior art, the purpose of this utility model is to provide a kind of external rotor electric machine that can be applicable to high pressure field.
In order to realize above-mentioned target, the utility model adopts following technical scheme:
A kind of external rotor electric machine, comprising:
Rotor sleeve, is formed with a container cavity;
Stator core, is contained in rotor sleeve at least partly;
Power transmission shaft, take first axle as rotating shaft and passes stator core at least partly;
Rotor sleeve comprises:
Sleeve part, around formation container cavity;
End cap portions, is positioned at sleeve part one end and one-body molded with sleeve part or be fixedly connected with;
End cap portions is also provided with for first through hole of power transmission shaft through rotor sleeve;
External rotor electric machine also comprises:
Stator coil, is wound on stator core and around power transmission shaft;
Stator support, comprises the installation portion for installing stator core and the cradle portion supporting installation portion;
The cable surface of stator coil is wrapped up by the first insulating barrier; Cradle portion is provided with the second through hole, and power transmission shaft passes the second through hole away from one end of end cap portions; The sidewall of cradle portion near the side of installation portion is provided with the second insulating barrier.
Further, the sidewall of end cap portions near the side of container cavity is provided with the 3rd insulating barrier.
Further, the radial direction of first axle is also provided with the 4th insulating barrier between stator core and power transmission shaft.
Further, stator core comprises: third through-hole, and third through-hole is along the through stator core in first axle direction, and power transmission shaft is through third through-hole; 4th insulating barrier is arranged between the hole wall of third through-hole and the outer wall of power transmission shaft.
Further, installation portion also comprises: the installation shaft with the fourth hole that a through direction extends along first axle direction, and installation shaft is installed stator core and passed third through-hole; Power transmission shaft is through fourth hole, and the 4th insulating barrier is between the outer wall and the hole wall of third through-hole of installation shaft.
Further, external rotor electric machine also comprises: clutch shaft bearing, and clutch shaft bearing is sheathed on the axial location being provided with cradle portion of power transmission shaft.
Further, cradle portion be formed one collecting clutch shaft bearing accepting groove, accepting groove and the second through hole through along first axle direction.
Further, external rotor electric machine also comprises: the second bearing, and the second bearing holder (housing, cover) is located at the outer wall being positioned at the part of container cavity of power transmission shaft.
Further, also comprise:
First stator insulating frame, at least comprises the insulation arm between stator coil and stator core.
Further, stator core also comprises multiple stator sidewall circumferentially arranged; External rotor electric machine also comprises: the second stator insulating frame; Second stator insulating frame at least comprises the insulating part that can be embedded between two adjacent stator sidewalls.
Usefulness of the present utility model is: the good insulating of this external rotor electric machine, can be applicable in high pressure field.
Accompanying drawing explanation
Figure 1 shows that the stereogram of external rotor electric machine of the present utility model;
Figure 2 shows that the incomplete decomposing figure of structure shown in Fig. 1;
Figure 3 shows that the cutaway view of structure shown in Fig. 1;
Figure 4 shows that the explosive view of structure shown in Fig. 1;
Figure 5 shows that the annexation figure of stator core in Fig. 1 and the second stator insulating frame;
What Figure 6 shows that stator core in Fig. 1 and the second stator insulating frame is separated schematic diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, concrete introduction is done to the utility model.
The utility model proposes a kind of external rotor electric machine, this external rotor electric machine is adapted at high pressure field and applies.
Please with reference to Fig. 1 to Fig. 6, external rotor electric machine 100 of the present utility model comprises: rotor sleeve 10, stator core 20, power transmission shaft 30, stator coil 40, stator support 50, wherein, stator core 20 is positioned at rotor sleeve 10, and power transmission shaft 30 also can with first axle Y for axis of rotation through stator core 20 and rotor sleeve 10.The technical solution of the utility model for convenience of description, makes giving a definition: define perpendicular to first axle Y and point to the direction of first axle Y for radial direction especially, and the circumferencial direction defined around first axle Y is circumference.
Concrete, rotor sleeve 10 comprises sleeve part 11 and end cap portions 12, and wherein, sleeve part 11 and end cap portions 12 are separately formed, and then fix as a whole, certainly, understandable, sleeve part 11 and end cap portions 12 also can be one-body molded, not as limit.Concrete, sleeve part 11 is around formation container cavity 111, stator core 20, stator coil 40 are contained in container cavity 111, the inwall of sleeve part 11 that is to say that the chamber wall of container cavity 111 is fixed with multiple rotor magnetic steel 112 extended along first axle Y-direction, and multiple rotor magnetic steel 112 circumferentially arranges at the inwall of sleeve part 11.End cap portions 12 is fixed on one end of sleeve part 11 and closes container cavity 111 at least partly, end cap portions 12 is also provided with the first through hole 121, and power transmission shaft 30 can pass end cap portions 12 from container cavity 111 and the first through hole 121, and then power transmission shaft 30 is through rotor sleeve 10.Meanwhile, power transmission shaft 30 is also fixedly connected with rotor sleeve 10, can drive power transmission shaft 30 axis of rotation centered by first axle Y in the lump like this when rotor sleeve 10 rotates, and then output torque.
Preferably, in order to realize the synchronous axial system of power transmission shaft 30 and rotor sleeve 10, a mold insert 13 is also provided with in first through hole 121 of end cap portions 12, this mold insert 13 is sheathed on the outer wall that power transmission shaft 30 is positioned at the part of the first through hole 121, like this under the effect of mold insert 13, power transmission shaft 30 can be fixedly connected with rotor sleeve 10 and can rotate in the lump.In addition, in the present embodiment, directly fixed by mold insert 13 between rotor sleeve 10 and power transmission shaft 30, the reliability and the ability that make to transmit torsion are between the two better, thus the high torsion realizing this external rotor electric machine 100 exports.
Stator core 20 is contained in the container cavity 111 in rotor sleeve 10, and it comprises the central shaft 21 that power transmission shaft 30 can be made through stator core 20, and this central shaft 21 extends along first axle Y-direction.Stator core 20 also comprises the linking arm 23 of multiple stator sidewall 22 and connecting stator sidewall 22 and central shaft 21, stator sidewall 22 is around power transmission shaft 30(central shaft 21) circumferencial direction arrangement, linking arm 23 radially stretches out from the outer wall of central shaft 21.
Stator coil 40 is wound on stator core 20 and around power transmission shaft 30.Stator core 20 can be wound in order to realize stator coil 40 and realize the basic insulation between stator coil 40 and stator core 20, in the present embodiment, the surface being wound the cable of stator coil 40 is wrapped up by the first insulating barrier, that is to say that the cable of this stator coil 40 such as can be formed by enamelled wire, simultaneously, this external rotor electric machine 100 also comprises the first stator insulating frame 60 between the outer surface and stator core 20 of stator coil 40, the structure of the first stator insulating frame 60 and the structure of stator core 20 match, at least comprise insulation arm 61, insulation arm 61 radially extends and between the outer surface and linking arm 61 of stator coil 40, stator coil 40 by cable winds on insulation arm 61, stator core 20 is wound on again by the stator coil 40 that fixedly realizes of the linking arm 23 of insulation arm 61 and stator core 20.Certainly can understand, this first stator insulating frame 60 can be fix with stator core 20 after above-described independent formation again, but it is preferred, this first stator insulating frame 60 is the insulating material that one deck is directly coated on stator core 20 surface, now above-described insulation arm 61 is one deck insulating material be coated on linking arm 23, this layer of insulating material, between stator coil 40 and stator core 20, realizes insulation between the two.
Preferably, in order to improve stator coil 40 and sleeve part 11 sidewall rotor magnetic steel 112 between creepage distance and electric clearance, in the present embodiment, external rotor electric machine 100 also comprises the second stator insulating frame 70.This second stator insulating frame 70 comprises multiple insulating part layer 71 circumferentially arranged, this insulating part 71 extends along the direction being parallel to first axle Y, each insulating part layer 71 is embedded between two adjacent stator sidewalls 22 and gap of filling between two adjacent stator sidewalls 22, thus stator core 20 and rotor sleeve 10 are isolated by insulating material.
Stator support 50 comprises installation portion 51 and cradle portion 52, and wherein, installation portion 51 is for fixedly mounting stator core 20, and cradle portion 52 is fixedly connected with installation portion 51, in the present embodiment, be preferably installation portion 51 and cradle portion 52 one-body molded.Concrete, cradle portion 52 is for supporting installation portion 51, it is positioned at the side away from end cap portions 12 of rotor sleeve 10, installation portion 51 forms along first axle Y towards the extension of the direction of container cavity 111 in cradle portion 52, cradle portion 52 is also provided with second through hole 521, power transmission shaft 30 one end is through the end cap portions 12 of rotor sleeve 10, and the other end is through the second through hole 521 of cradle portion 52.Installation portion 51 comprises the installation shaft 511 for installing stator core 20, and central shaft 21 inside of stator core 20 forms the third through-hole 211 along the through stator core 20 of first axle Y-direction, and power transmission shaft 30 and installation shaft 511 are all through third through-hole 211.In the present embodiment, this installation shaft 511 is positioned at container cavity 111, installation shaft 511 is also formed with a fourth hole 511a along the through installation shaft 511 of first axle Y-direction, this fourth hole 511a passes for power transmission shaft 30, that is to say the fourth hole 511a of power transmission shaft 30 through installation shaft 511, installation shaft 511 is again through the third through-hole 211 of stator core 20.
Preferably, in order to improve creepage distance between stator coil 40 and cradle portion 52 and electric clearance, in the present embodiment, the sidewall of cradle portion 52 near the side of installation portion 51 is provided with the second insulating barrier 522, the processing method of this second insulating barrier 522 such as can use the mode of integral molded plastic to be directly formed at the sidewall of cradle portion 52, or also what a insulated liner of first injection moulding can then be assembled to cradle portion 52, as shown in Figure 4, this second insulating barrier 522 is a support insulating cell that can be assembled in cradle portion 52.
Preferably, in order to further improve stator coil 40 and rotor sleeve 10 end cap portions 12 between creepage distance and electric clearance, in the present embodiment, same, the 3rd insulating barrier 122 is provided with at the sidewall of end cap portions 12 near container cavity 111 side, the processing method of the 3rd insulating barrier 122 can use the method for integral molded plastic to be directly formed at the sidewall of end cap portions 12 equally, or also what a insulated liner of first injection moulding can then be assembled to end cap portions 12, as shown in Figure 4, this second insulating barrier 522 is an end cap insulating cell that can be assembled in end cap portions 12.
Preferably, in order to make to realize supplementary insulation between the stator core 20 of this external rotor electric machine 100 and power transmission shaft 30 further, in the present embodiment, in the radial direction of first axle Y, the 4th insulating barrier 24 between stator core 20 and power transmission shaft 30, is also provided with.Between the hole wall that 4th insulating barrier 24 is arranged at the third through-hole 211 of stator core 20 and the outer wall of power transmission shaft 30, further, 4th insulating barrier 24 is an insulating sleeve, this insulating sleeve is sheathed on the outer wall of installation shaft 511, that is to say and make the 4th insulating barrier 24 between the outer wall and the hole wall of third through-hole 211 of installation shaft 511, make like this to insulate between stator core 20 and power transmission shaft 30, thus realize the supplementary insulation of external rotor electric machine 100, and then this external rotor electric machine 100 can be made to be applicable to high pressure field.It should be noted that, high pressure field described here is commonly referred to as non-security voltage.
Preferably, in order to reduce the friction of power transmission shaft 30 in rotation process, this external rotor electric machine 100 also comprises: clutch shaft bearing 31 and the second bearing 32.Clutch shaft bearing 31 is sheathed on the axial location being provided with cradle portion 52 of power transmission shaft 30, and cradle portion 52 is formed with an accepting groove (figure does not mark), and clutch shaft bearing 31 is contained in accepting groove, and accepting groove is also through along first axle Y-direction with the second through hole 521.Second bearing 32 is sheathed on the outer wall that power transmission shaft 30 is positioned at the part of container cavity 111, and is positioned at the fourth hole 511a of installation shaft 511.Like this, by clutch shaft bearing 31 and the second bearing 32, the friction reducing to produce in power transmission shaft 30 rotation process can be realized.
To sum up, in external rotor electric machine 100 of the present utility model, the sidewall of cradle portion 52 near the side of installation portion 51 is provided with the second insulating barrier 522, improves creepage distance and the electric clearance of external rotor electric machine 100, thus makes external rotor electric machine 100 of the present utility model be applicable to high pressure field.And the setting of this second insulating barrier 522 can also reduce this external rotor electric machine 100 along the length in first axle Y-direction on the basis of improving creepage distance and electric clearance, realizes the compact in size of the external rotor electric machine 100 in high pressure field.
More than show and describe general principle of the present utility model, principal character and advantage.The technical staff of the industry should understand, and above-described embodiment does not limit the utility model in any form, the technical scheme that the mode that all employings are equal to replacement or equivalent transformation obtains, and all drops in protection range of the present utility model.
Claims (10)
1. an external rotor electric machine, comprising:
Rotor sleeve, is formed with a container cavity;
Stator core, is contained in described rotor sleeve at least partly;
Power transmission shaft, take first axle as rotating shaft and passes described stator core at least partly;
Described rotor sleeve comprises:
Sleeve part, around the described container cavity of formation;
End cap portions, is positioned at described sleeve part one end and one-body molded with described sleeve part or be fixedly connected with;
Described end cap portions is also provided with for first through hole of described power transmission shaft through described rotor sleeve;
It is characterized in that, described external rotor electric machine also comprises:
Stator coil, is wound on described stator core and around described power transmission shaft;
Stator support, comprises the installation portion for installing described stator core and the cradle portion supporting described installation portion;
The cable surface of described stator coil is wrapped up by the first insulating barrier; Described cradle portion is provided with the second through hole, and described power transmission shaft passes described second through hole away from one end of described end cap portions; The sidewall of described cradle portion near the side of described installation portion is provided with the second insulating barrier.
2. external rotor electric machine according to claim 1, is characterized in that, the sidewall of described end cap portions near the side of described container cavity is provided with the 3rd insulating barrier.
3. external rotor electric machine according to claim 1, is characterized in that, the radial direction of described first axle is also provided with the 4th insulating barrier between described stator core and described power transmission shaft.
4. external rotor electric machine according to claim 3, is characterized in that, described stator core comprises: third through-hole, and described third through-hole is along the through described stator core in described first axle direction, and described power transmission shaft is through described third through-hole; Described 4th insulating barrier is arranged between the hole wall of described third through-hole and the outer wall of described power transmission shaft.
5. external rotor electric machine according to claim 4, it is characterized in that, described installation portion also comprises: the installation shaft with the fourth hole that a through direction extends along described first axle direction, and described installation shaft is installed described stator core and passed described third through-hole; Described power transmission shaft is through described fourth hole, and described 4th insulating barrier is between the outer wall and the hole wall of described third through-hole of described installation shaft.
6. external rotor electric machine according to claim 1, is characterized in that, described external rotor electric machine also comprises: clutch shaft bearing, and described clutch shaft bearing is sheathed on the axial location being provided with described cradle portion of described power transmission shaft.
7. external rotor electric machine according to claim 6, is characterized in that, described cradle portion be formed one collecting described clutch shaft bearing accepting groove, described accepting groove and described second through hole through along described first axle direction.
8. external rotor electric machine according to claim 7, is characterized in that, described external rotor electric machine also comprises: the second bearing, and described second bearing holder (housing, cover) is located at the outer wall being positioned at the part of described container cavity of described power transmission shaft.
9. external rotor electric machine according to claim 1 to 8 any one, is characterized in that, also comprise:
First stator insulation rack-layer, at least comprises the insulation arm at least partly between described stator coil and described stator core.
10. the external rotor electric machine according to claim 1 to 8 any one, is characterized in that, described stator core also comprises multiple stator sidewall circumferentially arranged; Described external rotor electric machine also comprises: the second stator insulation rack-layer; Described second stator insulation rack-layer at least comprises the insulating part layer that can be embedded between two adjacent described stator sidewalls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420819927.3U CN204392040U (en) | 2014-12-22 | 2014-12-22 | External rotor electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420819927.3U CN204392040U (en) | 2014-12-22 | 2014-12-22 | External rotor electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204392040U true CN204392040U (en) | 2015-06-10 |
Family
ID=53364721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420819927.3U Expired - Fee Related CN204392040U (en) | 2014-12-22 | 2014-12-22 | External rotor electric machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204392040U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533107A (en) * | 2016-11-15 | 2017-03-22 | 宁波金洪胜机电科技有限公司 | External rotor motor |
-
2014
- 2014-12-22 CN CN201420819927.3U patent/CN204392040U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533107A (en) * | 2016-11-15 | 2017-03-22 | 宁波金洪胜机电科技有限公司 | External rotor motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20201222 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |