CN105790460A - External rotor motor - Google Patents
External rotor motor Download PDFInfo
- Publication number
- CN105790460A CN105790460A CN201410811844.4A CN201410811844A CN105790460A CN 105790460 A CN105790460 A CN 105790460A CN 201410811844 A CN201410811844 A CN 201410811844A CN 105790460 A CN105790460 A CN 105790460A
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- stator
- hole
- transmission shaft
- electric machine
- power transmission
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Abstract
The invention discloses an external rotor motor, which comprises a rotor sleeve, a stator core, a transmission shaft, a stator coil and a bracket assembly, wherein an accommodating cavity is formed in the rotor sleeve; the stator core is at least partially accommodated into the rotor sleeve; the transmission shaft takes a first axis as a rotating shaft and at least passes through the stator core; the rotor sleeve comprises a sleeve part and an end cover part; the sleeve part forms the accommodating cavity in a surrounding manner; the end cover part is located at one end of the sleeve part; the end cover part and the sleeve part are integrally molded or fixedly connected; a first through hole, through the transmission shaft passes through the rotor sleeve is also formed in the end cover part; the stator coil is wound on the stator core and surrounds the transmission shaft; the bracket assembly at least comprises a stator installation part and a stator bracket; the stator installation part is used for installing the stator core; the stator bracket is fixedly connected with the stator installation part; the cable surface of the stator coil is coated with a first insulating layer; a second through hole is formed in the stator bracket; one end, far away from the end cover part, of the transmission shaft passes through the second through hole; and the stator bracket is made of a second insulating material. The external rotor motor disclosed by the invention is good in insulativity and can be applicable to the field of high voltages.
Description
Technical field
The present invention relates to a kind of motor, be specifically related to a kind of external rotor electric machine.
Background technology
Motor is generally divided into external rotor electric machine and inner rotor motor according to the relative position of rotor and stator, and wherein external rotor electric machine has saving space, feature compact to design relatively, and increasingly receives significant attention.But the poor insulativity of existing external rotor electric machine, mostly just suitable in the instrument of low pressure, can so make the use scope of external rotor electric machine be restricted.
Summary of the invention
For solving the deficiencies in the prior art, it is an object of the invention 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 present invention adopts the following technical scheme that:
A kind of external rotor electric machine, including:
Rotor sleeve, is formed with one and holds chamber；
Stator core, is at least partially housed in rotor sleeve；
Power transmission shaft, with first axle for rotating shaft and at least partially across stator core；
Rotor sleeve includes:
Sleeve part, holds chamber around being formed；
End cap portions, is positioned at sleeve part one end and one-body molded with sleeve part or fixing is connected；
End cap portions is additionally provided with the first through hole for power transmission shaft traverse rotor sleeve；
External rotor electric machine also includes:
Stator coil, is wound on stator core and around power transmission shaft；
Carriage assembly, at least includes the stator mount for installing stator core and fixes the stator support being 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 is away from one end traverse second through hole of end cap portions；Stator support is made up of the second insulant.
Further, stator mount includes the installation axle installing stator core, installs axle and is formed with a third through-hole through along first axle direction, and shaft portion also and has gap the hole wall of third through-hole through third through-hole.
Further, external rotor electric machine also includes: supporting the clutch shaft bearing of power transmission shaft, clutch shaft bearing is sheathed on the axial location being provided with stator support of power transmission shaft.
Further, stator support is formed with an accepting groove housing clutch shaft bearing, and accepting groove and the second through hole are through along first axle direction.
Further, external rotor electric machine also includes: support the second bearing of power transmission 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 and stator support connect by screw is fixing.
Further, it is provided with between rotor sleeve and power transmission shaft and makes both constitute the 3rd insulating barrier of insulation.
Further, the 3rd insulating barrier at first axle radially at least provided with the hole wall of the first through hole in end cap portions and power transmission shaft between the part in the first through hole.
Further, the first power transmission shaft is positioned at the outer wall of the part of the first through hole and is also arranged with a mold insert, the 3rd insulating barrier at first axle radially at least provided with between the hole wall of mold insert and the first through hole.
Further, external rotor electric machine also includes:
Stator insulating frame, at least includes the insulation arm between stator coil and stator core.
The invention have benefit that: the good insulating of this external rotor electric machine, it is possible to suitable in high pressure field.
Accompanying drawing explanation
Fig. 1 show the axonometric chart of the external rotor electric machine of the present invention；
Fig. 2 show the incomplete decomposing figure of structure shown in Fig. 1；
Fig. 3 show the sectional view of structure shown in Fig. 1；
Fig. 4 show the explosive view of structure shown in Fig. 1.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention done concrete introduction.
The present invention proposes a kind of external rotor electric machine, and this external rotor electric machine is adapted at high pressure field and applies.
Please with reference to Fig. 1 to Fig. 4, the external rotor electric machine 100 of the present invention includes: rotor sleeve 10, stator core 20, power transmission shaft 30, stator coil 40, carriage assembly 50, wherein, stator core 20 is positioned at rotor sleeve 10, and power transmission shaft 30 is through stator core 20 and rotor sleeve 10 can with first axle Y for axis of rotation.In order to technical scheme is conveniently described, make defined below especially: definition is perpendicular to first axle Y and points to the direction of first axle Y for radially, and the circumferencial direction being defined around first axle Y is circumference.
Rotor sleeve 10 includes sleeve part 11 and end cap portions 12, and wherein, sleeve part 11 and end cap portions 12 are formed separately, and then fix as a whole, it will of course be understood that, sleeve part 11 and end cap portions 12 can also be integrally formed, and are not limited thereto.Concrete, sleeve part 11 holds chamber 111 around forming one, stator core 20, stator coil 40 are contained in accommodation chamber 111, the inwall of sleeve part 11 that is to say that the cavity wall holding chamber 111 is fixed with multiple rotor magnetic steel 112 extended along first axle Y-direction, and multiple rotor magnetic steels 112 circumferentially arrange at the inwall of sleeve part 11.End cap portions 12 is fixed on one end of sleeve part 11 and closes at least partly and hold chamber 111, and end cap portions 12 is additionally provided with the first through hole 121, and power transmission shaft 30 can from holding chamber 111 and the first through hole 121 through end cap portions 12, and then power transmission shaft 30 is through rotor sleeve 10.Meanwhile, power transmission shaft 30 is also fixing with rotor sleeve 10 to be connected, and so can drive power transmission shaft 30 axis of rotation centered by first axle Y and then output moment of torsion in the lump when rotor sleeve 10 rotates.
Preferably, in order to realize the fixing connection of power transmission shaft 30 and rotor sleeve 10, it is additionally provided with a mold insert 13 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, so under the effect of mold insert 13, power transmission shaft 30 fixing with rotor sleeve 10 can be connected and can rotate in the lump.
Stator core 20 is contained in the accommodation chamber 111 in rotor sleeve 10, and it includes the central shaft 21 enabling to power transmission shaft 30 through stator core 20, and this central shaft 21 extends along first axle Y-direction.Stator core 20 also includes the linking arm 23 of multiple stator sidewall 22 and connecting stator sidewall 22 and central shaft 21, and stator sidewall 22 is around power transmission shaft 30(central shaft 21) circumferencial direction arrangement, the sidewall of linking arm 23 drive shaft 30 extends radially outward.
Stator coil 40 is wound on stator core 20 and around power transmission shaft 30.nullStator 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 of the cable being wound 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 enamel-covered wire，Simultaneously，This external rotor electric machine 100 also includes the stator insulating frame 60 between the outer surface and stator core 20 of stator coil 40，The structure of the structure of stator insulating frame 60 and stator core 20 matches，At least include 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，The fixing stator coil 40 that realizes again through the linking arm 23 of insulation arm 61 and stator core 20 is wound on stator core 20.Certainly can understand, this stator insulating frame 60 can be fix with stator core 20 after above-described independently forming again, but it is preferred, this stator insulating frame 60 is one layer is directly coated on the insulant on stator core 20 surface, now above-described insulation arm 61 is the one layer of insulant being coated on linking arm 23, this layer of insulant is between stator coil 40 and stator core 20, it is achieved insulation between the two.
Carriage assembly 50 includes stator mount 51 and stator support 52, and wherein, stator mount 51 is used for fixedly mounting stator core 20, and stator support 52 is fixing with stator mount 51 to be connected.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, the end cap portions 12 of power transmission shaft 30 one end traverse rotor sleeve 10, the second through hole 521 of other end traverse stator support 52.Stator mount 51 includes the installation axle 511 for installing stator core 20, and the central shaft 21 of stator core 20 is internal is hollow structure, and it is sheathed on the outer wall installing axle 511 and together with installing axle 511 close-fitting.This installation axle 511 is positioned at accommodation chamber 111, and installation axle 511 is also formed with one and passes for power transmission shaft 30 along third through-hole 511a, this third through-hole 511a that first axle Y-direction is through.
In order to further such that realize superinsulation between stator core 20 and the power transmission shaft 30 of this external rotor electric machine 100, 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 carriage assembly 50, wherein stator support 52 adopts the second insulant to make, and also has gap in stator mount 51 between hole wall and the power transmission shaft 30 of the third through-hole 511a of installation axle 511 simultaneously.So, by gap and adopt the stator support 52 made of insulant to realize insulation between stator mount 51 and power transmission shaft 30, and then make and the stator core 20 installing axle 511 close-fitting of stator mount 51 also and realizes superinsulation between power transmission shaft 30.So, by double insulated insulation system, it is possible to increase the requirement of the insulating properties when external rotor electric machine 100 of the present invention is applied in 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 power transmission shaft 30 friction in rotation process, simultaneously in order to support power transmission shaft 30 make power transmission shaft 30 and install axle 511 third through-hole 511a hole wall between form gap, external rotor electric machine 100 also includes: 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 forming the side holding chamber 111 outside this.So, by clutch shaft bearing 31 and the second bearing 32, except basic realizes reducing the friction of generation in power transmission shaft 30 rotation process；Simultaneously, because installing the aperture diameter also greater than the part being positioned at third through-hole 511a of power transmission shaft 30 of the third through-hole 511a of axle 511, and under the supporting role of clutch shaft bearing 31 and the second bearing 32, make formed between the outer wall of power transmission shaft 30 and third through-hole 511a and maintain a gap, thus realizing insulation；Furthermore, the second bearing 32 is positioned at outside rotor sleeve 10, it is possible to the aperture of the third through-hole 511a of relatively reduced installation axle 511 such that it is able to reduces the size of the radial direction of this rotor sleeve 10, and then realizes the small-sized of this external rotor electric machine 100.
Preferably, in order to further such that realize superinsulation between rotor sleeve 10 and the power transmission shaft 30 of this external rotor electric machine 100, in the present embodiment, be additionally provided with between rotor sleeve 10 and power transmission shaft 30 so that both constitute the 3rd insulating barrier 14 of insulation.3rd insulating barrier 14 is between the hole wall and the outer wall of the power transmission shaft 30 part in the first through hole 121 of first through hole 121 being radially arranged at end cap portions 12 of first axle Y, further, the 3rd insulating barrier 14 is in the first axial being radially arranged between mold insert 13 and the hole wall of the first through hole 121.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 the external rotor electric machine 100 of the present invention, the cable surface of stator coil 40 is wrapped up thus realizing basic insulation by the first insulating barrier, simultaneously, stator support 52 in this external rotor electric machine 100 is formed by the second insulant thus the superinsulation that realizes between power transmission shaft 30 and stator core 20, furthermore, the 3rd insulating barrier 14 it is additionally provided with between end cap portions 12 and power transmission shaft 30, thus the superinsulation realized between power transmission shaft 30 and rotor sleeve 10, so, this external rotor electric machine 100 has double insulating structure, it is adaptable to high pressure field.
The ultimate principle of the present invention, principal character and advantage have more than been shown and described.Skilled person will appreciate that of the industry, above-described embodiment does not limit the present invention in any form, and all employings are equal to the technical scheme that the mode of replacement or equivalent transformation obtains, and all fall within protection scope of the present invention.
Claims (10)
1. an external rotor electric machine, including:
Rotor sleeve, is formed with one and holds chamber；
Stator core, is at least partially housed in described rotor sleeve；
Power transmission shaft, with first axle for rotating shaft and at least partially across described stator core；
Described rotor sleeve includes:
Sleeve part, around forming described accommodation chamber；
End cap portions, is positioned at described sleeve part one end and one-body molded with described sleeve part or fixing is connected；
Described end cap portions is additionally provided with the first through hole for the described power transmission shaft described rotor sleeve of traverse；
It is characterized in that, described external rotor electric machine also includes:
Stator coil, is wound on described stator core and around described power transmission shaft；
Carriage assembly, at least includes the stator mount for installing described stator core and fixes, with described stator mount, the stator support being connected；
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 is away from described second through hole of one end traverse of described end cap portions；Described stator support is made up of the second insulant.
2. external rotor electric machine according to claim 1, it is characterized in that, described stator mount includes the installation axle installing described stator core, described installation axle is formed with a third through-hole through along described first axle direction, and described shaft portion also and has gap the hole wall of described third through-hole through described third through-hole.
3. external rotor electric machine according to claim 2, it is characterised in that described external rotor electric machine also includes: support the clutch shaft bearing of described power transmission shaft, 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, it is characterised in that described stator support is formed with an accepting groove housing described clutch shaft bearing, described accepting groove is through along described first axle direction with described second through hole.
5. external rotor electric machine according to claim 4, it is characterized in that, described external rotor electric machine also includes: support the second bearing of 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, it is characterised in that described stator mount and described stator support connect by screw is fixing.
7. external rotor electric machine according to claim 1, it is characterised in that be provided with between described rotor sleeve and described power transmission shaft and make both constitute the 3rd insulating barrier of insulation.
8. external rotor electric machine according to claim 7, it is characterised in that the 3rd insulating barrier at described first axle radially at least provided with the hole wall of described first through hole in described end cap portions and described power transmission shaft between the part in described first through hole.
9. external rotor electric machine according to claim 8, it is characterized in that, described first power transmission shaft is positioned at the outer wall of the part of described first through hole and is also arranged with a mold insert, described 3rd insulating barrier at described first axle radially at least provided with between the hole wall of described mold insert and described first through hole.
10. the external rotor electric machine according to claim 1 to 9 any one, it is characterised in that described external rotor electric machine also includes:
Stator insulating frame, at least includes the insulation arm between described stator coil and described stator core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410811844.4A CN105790460A (en) | 2014-12-22 | 2014-12-22 | External rotor motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410811844.4A CN105790460A (en) | 2014-12-22 | 2014-12-22 | External rotor motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105790460A true CN105790460A (en) | 2016-07-20 |
Family
ID=56377887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410811844.4A Pending CN105790460A (en) | 2014-12-22 | 2014-12-22 | External rotor motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105790460A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108075583A (en) * | 2016-11-17 | 2018-05-25 | 德昌电机(深圳)有限公司 | A kind of round brush dust catcher of external rotor electric machine and the application motor |
| CN109995174A (en) * | 2017-12-30 | 2019-07-09 | 苏州工业园区泰格电子科技有限公司 | A kind of external rotor electric machine and compressor and liquid pump including the motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04168961A (en) * | 1990-10-31 | 1992-06-17 | Nippon Densan Corp | Motor |
| CN102377268A (en) * | 2010-08-27 | 2012-03-14 | 佛山市南海区东唐电机厂 | Outer rotor alternating-current motor |
| CN203660692U (en) * | 2014-01-03 | 2014-06-18 | 中山大洋电机制造有限公司 | Rotor structure of external rotor electric machine and external rotor electric machine employing same |
| CN204391916U (en) * | 2014-12-22 | 2015-06-10 | 南京德朔实业有限公司 | External rotor electric machine |
-
2014
- 2014-12-22 CN CN201410811844.4A patent/CN105790460A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04168961A (en) * | 1990-10-31 | 1992-06-17 | Nippon Densan Corp | Motor |
| CN102377268A (en) * | 2010-08-27 | 2012-03-14 | 佛山市南海区东唐电机厂 | Outer rotor alternating-current motor |
| CN203660692U (en) * | 2014-01-03 | 2014-06-18 | 中山大洋电机制造有限公司 | Rotor structure of external rotor electric machine and external rotor electric machine employing same |
| CN204391916U (en) * | 2014-12-22 | 2015-06-10 | 南京德朔实业有限公司 | External rotor electric machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108075583A (en) * | 2016-11-17 | 2018-05-25 | 德昌电机(深圳)有限公司 | A kind of round brush dust catcher of external rotor electric machine and the application motor |
| CN108075583B (en) * | 2016-11-17 | 2022-10-04 | 德昌电机(深圳)有限公司 | External rotor motor and rolling brush dust collector using same |
| CN109995174A (en) * | 2017-12-30 | 2019-07-09 | 苏州工业园区泰格电子科技有限公司 | A kind of external rotor electric machine and compressor and liquid pump including the motor |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20160720 |