CN204391916U - External rotor electric machine - Google Patents
External rotor electric machine Download PDFInfo
- Publication number
- CN204391916U CN204391916U CN201420825606.4U CN201420825606U CN204391916U CN 204391916 U CN204391916 U CN 204391916U CN 201420825606 U CN201420825606 U CN 201420825606U CN 204391916 U CN204391916 U CN 204391916U
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- Prior art keywords
- stator
- electric machine
- hole
- 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; Bracket component, the stator support at least comprising the stator mount for installing stator core and be fixedly connected with stator mount; The cable surface of stator coil is wrapped up by the first insulating barrier; Stator support is provided with the second through hole, and power transmission shaft passes the second through hole away from one end of end cap portions; Stator support is made up of the second insulating material.External rotor electric machine good insulating of the present utility model, can be applicable to high pressure field.
Description
Technical field
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;
Bracket component, the stator support at least comprising the stator mount for installing stator core and be fixedly connected with stator mount;
The cable surface of stator coil is wrapped up by the first insulating barrier; Stator support is provided with the second through hole, and power transmission shaft passes the second through hole away from one end of end cap portions; Stator support is made up of the second insulating material.
Further, stator mount comprises the installation shaft of installing stator core, and installation shaft is formed with a third through-hole through along first axle direction, and shaft portion also and the hole wall of third through-hole has gap through third through-hole.
Further, external rotor electric machine also comprises: the clutch shaft bearing of supporting shaft, and clutch shaft bearing is sheathed on the axial location being provided with stator support of power transmission shaft.
Further, stator support 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 of supporting shaft, and the second bearing holder (housing, cover) is located at power transmission shaft one end through the first through hole, and the second bearing is positioned at the outside of rotor sleeve.
Further, stator mount is fixedly connected with by screw with stator support.
Further, the 3rd insulating barrier making both form insulation is provided with between rotor sleeve and power transmission shaft.
Further, the 3rd insulating barrier is at least arranged between the hole wall of the first through hole of end cap portions and the part of power transmission shaft in the first through hole in the radial direction of first axle.
Further, the outer wall that the first power transmission shaft is positioned at the part of the first through hole is also arranged with a mold insert, and the 3rd insulating barrier is at least arranged between the hole wall of mold insert and the first through hole in the radial direction of first axle.
Further, external rotor electric machine also comprises:
Stator insulating frame, at least comprises the insulation arm between stator coil and stator core.
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.
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. 4, external rotor electric machine 100 of the present utility model comprises: rotor sleeve 10, stator core 20, power transmission shaft 30, stator coil 40, bracket component 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.
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 integrally formed, 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 being fixedly connected with 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.
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, the sidewall of linking arm 23 drive shaft 30 radially stretches out.
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 stator insulating frame 60 between the outer surface and stator core 20 of stator coil 40, the structure of 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 stator insulating frame 60 can be fix with stator core 20 after above-described independent formation again, but it is preferred, this 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.
Bracket component 50 comprises stator mount 51 and stator support 52, and wherein, stator mount 51 is for fixedly mounting stator core 20, and stator support 52 is fixedly connected with stator mount 51.Concrete, stator support 52 is positioned at the side away from end cap portions 12 of rotor sleeve 10, and stator support 52 is provided with second through hole 521, and 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 stator support 52.Stator mount 51 comprises the installation shaft 511 for installing stator core 20, and central shaft 21 inside of stator core 20 is hollow structure, its be sheathed on installation shaft 511 outer wall and together with installation shaft 511 close-fitting.This installation shaft 511 is positioned at container cavity 111, and installation shaft 511 is also formed with one and passes for power transmission shaft 30 along the through third through-hole 511a of first axle Y-direction, this third through-hole 511a.
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, stator support 52 and stator mount 51 are the single part formed respectively, then both are fixed into an entirety by screw 53, this entirety composition bracket component 50, wherein stator support 52 adopts the second insulating material to make, and simultaneously also has gap between the hole wall of the third through-hole 511a of installation shaft 511 and power transmission shaft 30 in stator mount 51.Like this, realize insulating by gap and the stator support 52 that adopts insulating material to make between stator mount 51 and power transmission shaft 30, and then to make and the stator core 20 of installation shaft 511 close-fitting of stator mount 51 also and between power transmission shaft 30 realizes supplementary insulation.Like this, by double insulated insulation system, the requirement of insulating properties when external rotor electric machine 100 of the present utility model is applied in high pressure field can be improved.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, simultaneously in order to supporting shaft 30 makes to form gap between the hole wall of the third through-hole 511a of power transmission shaft 30 and installation shaft 511, 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 stator support 52 of power transmission shaft 30, and stator support 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 power transmission shaft 30 one end through the first through hole 121, and the second bearing 32 is positioned at the outside of rotor sleeve 10, refers to the opposite side that rotor sleeve 10 is relative with the side forming container cavity 111 outside this.Like this, by clutch shaft bearing 31 and the second bearing 32, except the friction produced in basic realization reduction power transmission shaft 30 rotation process; Simultaneously, because the aperture of the third through-hole 511a of installation shaft 511 is also greater than the diameter being positioned at the part of third through-hole 511a of power transmission shaft 30, and under the supporting role of clutch shaft bearing 31 and the second bearing 32, make to be formed between the outer wall of power transmission shaft 30 and third through-hole 511a and maintain a gap, thus realizing insulation; Moreover the second bearing 32 is positioned at outside rotor sleeve 10, relatively can reduces the aperture of the third through-hole 511a of installation shaft 511, thus the size of the radial direction of this rotor sleeve 10 can be reduced, and then realize the small-sized of this external rotor electric machine 100.
Preferably, in order to make to realize supplementary insulation between the rotor sleeve 10 of this external rotor electric machine 100 and power transmission shaft 30 further, in the present embodiment, between rotor sleeve 10 and power transmission shaft 30, be also provided with the 3rd insulating barrier 14 making both form insulation.3rd insulating barrier 14 is arranged between the hole wall of the first through hole 121 of end cap portions 12 and the outer wall of the part of power transmission shaft 30 in the first through hole 121 in the radial direction of first axle Y, further, the 3rd insulating barrier 14 is arranged between mold insert 13 and the hole wall of the first through hole 121 in the radial direction of the first axis.Concrete, the 3rd insulating barrier 14 is an insulating sleeve, and this insulating sleeve is sheathed on the outer wall of mold insert 13.
To sum up, in external rotor electric machine 100 of the present utility model, the cable surface of stator coil 40 is wrapped up by the first insulating barrier thus realizes basic insulation, simultaneously, stator support 52 in this external rotor electric machine 100 is formed by the second insulating material thus realizes the supplementary insulation between power transmission shaft 30 and stator core 20, moreover, the 3rd insulating barrier 14 is also provided with between end cap portions 12 and power transmission shaft 30, thus the supplementary insulation realized between power transmission shaft 30 and rotor sleeve 10, like this, this external rotor electric machine 100 has double insulating structure, is applicable to 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;
Bracket component, the stator support at least comprising the stator mount for installing described stator core and be fixedly connected with described stator mount;
The cable surface of described stator coil is wrapped up by the first insulating barrier; Described stator support 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; Described stator support is made up of the second insulating material.
2. external rotor electric machine according to claim 1, it is characterized in that, described stator mount comprises the installation shaft of installing described stator core, described installation shaft is formed with a third through-hole through along described first axle direction, and described shaft portion also and the hole wall of described third through-hole has gap through described third through-hole.
3. external rotor electric machine according to claim 2, is characterized in that, described external rotor electric machine also comprises: the clutch shaft bearing supporting described power transmission shaft, and described clutch shaft bearing is sheathed on the axial location being provided with described stator support of described power transmission shaft.
4. external rotor electric machine according to claim 3, is characterized in that, described stator support be formed one collecting described clutch shaft bearing accepting groove, described accepting groove and described second through hole through along described first axle direction.
5. external rotor electric machine according to claim 4, it is characterized in that, described external rotor electric machine also comprises: the second bearing supporting described power transmission shaft, and described second bearing holder (housing, cover) is located at described power transmission shaft one end through described first through hole, and described second bearing is positioned at the outside of described rotor sleeve.
6. external rotor electric machine according to claim 1, is characterized in that, described stator mount is fixedly connected with by screw with described stator support.
7. external rotor electric machine according to claim 1, is characterized in that, is provided with the 3rd insulating barrier making both form insulation between described rotor sleeve and described power transmission shaft.
8. external rotor electric machine according to claim 7, is characterized in that, the 3rd insulating barrier is at least arranged between the hole wall of described first through hole of described end cap portions and the part of described power transmission shaft in described first through hole in the radial direction of described first axle.
9. external rotor electric machine according to claim 8, it is characterized in that, the outer wall that described power transmission shaft is positioned at the part of described first through hole is also arranged with a mold insert, and described 3rd insulating barrier is at least arranged between the hole wall of described mold insert and described first through hole in the radial direction of described first axle.
10. the external rotor electric machine according to claim 1 to 9 any one, is characterized in that, described external rotor electric machine also comprises:
Stator insulating frame, at least comprises the insulation arm between described stator coil and described stator core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420825606.4U CN204391916U (en) | 2014-12-22 | 2014-12-22 | External rotor electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420825606.4U CN204391916U (en) | 2014-12-22 | 2014-12-22 | External rotor electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204391916U true CN204391916U (en) | 2015-06-10 |
Family
ID=53364597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420825606.4U Expired - Fee Related CN204391916U (en) | 2014-12-22 | 2014-12-22 | External rotor electric machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204391916U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790460A (en) * | 2014-12-22 | 2016-07-20 | 南京德朔实业有限公司 | External rotor motor |
-
2014
- 2014-12-22 CN CN201420825606.4U patent/CN204391916U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790460A (en) * | 2014-12-22 | 2016-07-20 | 南京德朔实业有限公司 | 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20201222 |