CN100409542C - Permanent magnet AC brushless motor - Google Patents

Permanent magnet AC brushless motor Download PDF

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Publication number
CN100409542C
CN100409542C CNB2005100698245A CN200510069824A CN100409542C CN 100409542 C CN100409542 C CN 100409542C CN B2005100698245 A CNB2005100698245 A CN B2005100698245A CN 200510069824 A CN200510069824 A CN 200510069824A CN 100409542 C CN100409542 C CN 100409542C
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Prior art keywords
bearing
permanent magnet
motor
cap
brushless motor
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CNB2005100698245A
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CN1674407A (en
Inventor
任奕彪
陈眷邦
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Zhejiang Zobow Mechanical and Electrical Tech Co., Ltd.
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Zhongbang Electric Machine Science & Technology Co Ltd Ningbo
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Abstract

The present invention discloses a manufacture technology and an internal structure of a permanent magnet AC brushless motor. The permanent magnet AC brushless motor is composed of a motor main body and a braking device for driving and speed regulating, wherein the motor main body is composed of a stator assembly, a rotor assembly, a bearing, an end cover, blades and a fan housing, the rotor assembly which is made from high intensity permanent magnet material is arranged in the stator assembly, and the braking device for driving and speed regulating is composed of a driving controller and a speed regulating switch to realize electronic commutating, stepless speed regulating and braking. The permanent magnet AC brushless motor also has the advantages of high efficiency, wide speed regulating, no commutating spark, small volume, light weight, less noise, no standby consumption, etc.

Description

Permanent magnet AC brushless motor
Technical field
The present invention relates to motor manufacturing technology field, is a kind of permanent magnet AC brushless motor that adopts the high strength magnetic material to make in rotor assembly.
Background technology
Since the motor invention, the motor of various uses, various types is come out one after another, and a multitude of names.If with the power supply classification of input, the branch of interchange, direct current is arranged, can divide single-phase, three-phase again in the interchange; Rated voltage branch with input has high pressure, low pressure; With volume and watt level branch, high-power, middle-size and small-size and electrical micro-machine are arranged; With the purposes branch plain edition, stepping type, fractional horse-power, servo type, explosion-proof type, submerged type are arranged; With the control mode branch constant velocity type and frequency control type are arranged,, have brushless and the branch of brush is arranged if with the mode branch of electric current input; To make the material branch of rotor, the branch of strict magnetic material and permanent magnetic material is arranged.But till settled the present, also not having a kind of motor at present is the product that comprehensively has above-mentioned various performances.The applicant has invented a kind of permanent magnet AC brushless motor through the research of long period.Show that according to looking into new data domestic also do not have this kind motor, the brushless electric machine that is used on the automobile start only being arranged abroad then is low voltage DC motor, and the AC brushless electric machine that still really is not applied to the high voltage occasion in the industrial production comes out.For this reason, the applicant has submitted the utility application book of " a kind of permanent magnet AC brushless motor that is used for industrial sewing machine " to State Intellectual Property Office on January 21st, 2005, accepting application number is 200520100221.2, and the present invention has done bigger improvement on this basis.Its structure is simpler, and weight is lighter, and driving, speed governing, braking, overload protection etc. all adopt the IC control technology, perfect permanent magnet AC brushless motor truly.
Summary of the invention
Technical problem to be solved by this invention is the present situation at above-mentioned prior art, a kind of alternating current motor that does not have brush that adopts permanent magnetic material to make is provided, it has the efficient height, simple in structure, speed adjustable range is wide, non-commutation spark, and design power is changeable, volume is small and exquisite relatively, advantage in light weight, that manufacturing materials is economized.
The technical scheme that the present invention solves the problems of the technologies described above is: a kind of permanent magnet AC brushless motor, form by motor body and driving and speed regulating device two parts.It is characterized in that: described motor body is made up of field frame assembly, rotor assembly, bearing, fan blade, end cap, fan housing; Described driving and speed governing brake apparatus comprise driving governor and speed-regulating switch.Described field frame assembly comprises that shell, support and installation foot hole, outer casing inner wall are embedded with winding, and is provided with the magneto rotor assembly of its axial rotation relatively in inside.Described rotor assembly comprises rotor body and the rotating shaft that is located at the center, and an end of rotating shaft is located at end cap central authorities by clutch shaft bearing, and the output of armature spindle then passes the central authorities that second bearing is arranged on the shell seal end face; The rotating shaft of above-mentioned rotor assembly is stretched out outside the end cap, and on the one section axle in the outside of stretching out, be fixed with one the cooling usefulness fan blade, the fan blade outside is covered with a fan housing that fixes with end cap, can prevent the long-time running of motor so effectively and overheated, makes the motor can continuous operation.For the fit clearance between energy self-aligning bearing and the end cap, be provided with a corrugated gasket between above-mentioned clutch shaft bearing and the end cap the inside.Above-mentioned end cap the inside central authorities are provided with a bearing pedestal, and described clutch shaft bearing is just ccontaining to be positioned in this bearing pedestal, and the inside, described shell seal end central authorities also are provided with a bearing pedestal, and described second bearing is just ccontaining to be positioned in this bearing pedestal.Adopt aforesaid way the clutch shaft bearing and second bearing more stably can be fixed in the enclosure.But the shell of said stator assembly is provided with the vertical or horizontal fixing installation foot hole of power supply machine.
Be provided with automatic reverse, stepless speed regulation braking circuit that electronic component and wiring board are formed in the described driving governor, be provided with three multi-core sockets at the driving governor shell, corresponding with three porous plugs of power supply, speed-regulating switch and motor windings respectively.
Compared with prior art, the invention has the advantages that: because this rotor adopts high-intensity permanent magnet material, need not be to the strict magnetic of rotor, thereby brush and commutator segment have also just been save, be a kind of brushless AC motor, realized of the application of brushless technology, so this motor just do not need to be provided with in addition commutator, so just do not have the spark of traditional motor generation when commutation to the high voltage occasion yet.Also owing to adopted the Variable Frequency Speed Regulation Principle of brushless electric machine, realize braking and stepless speed regulation, along with the increasing of load, this motor can both keep harder torque in the rated power scope like this; Because of having adopted the magneto rotor assembly, stator winding coefficient height designs closely, so efficiency of motor improves relatively simultaneously; Owing to adopt electronic speed regulation, braking, therefore not only can save mechanical braking mechanism, also reduced noise and mechanical energy consumption, thereby the volume of whole motor is reduced, weight saving, designs simplification.
Description of drawings
Fig. 1 is the structure broken away view of the embodiment of the invention;
Fig. 2 is the structure cutaway view of the embodiment of the invention;
Fig. 3 is the electrical connection schematic diagram of embodiment of the invention driving governor and motor main body;
Seven cores), 15. porous plugs (a: five holes, b: six holes, c: seven apertures in the human head), 16. clutch shaft bearing seats, 17. second bearing pedestals each title and mark among the figure: 1. shell, 2. support and installation foot hole, 3. winding, 4. clutch shaft bearing, 5. rotor, 6. rotating shaft, 7. second bearing, 8. corrugated gasket, 9. end cap, 10. fan blade, 11. fan housings, 12. driving governors, 13. speed-regulating switchs, 14. multi-core sockets (A: five cores, B: six cores, C:.
Embodiment
Below in conjunction with drawings and Examples the present invention is described in further detail.
Embodiment: present embodiment is a kind of motor that is used for industrial sewing machine, as Fig. 1~shown in Figure 3.It constitutes field frame assembly by shell 1, support and installation foot hole 2 and the winding 3 that is embedded in shell 1 inside; An end face at shell 1 has been screwed an end cap 9, can certainly adopt alternate manner end cap 9 to be fixed on the end face of shell 1 of field frame assembly, as with bolt, screw rod connected mode or welding manner.Described end cap 9 the insides have a bearing pedestal 16; But the magneto rotor assembly that has a relative stator assembly axial rotation in the field frame assembly.Rotor 5 bodies of described rotor assembly are to make with the high strength permanent magnetic material, and the center is provided with rotating shaft 6, have a convex shoulder on the end axle of rotating shaft 6, and clutch shaft bearing 4 is fixed on this section axle by this convex shoulder, and in the ccontaining bearing pedestal 16 that is positioned end cap 9 the insides; Also be provided with a corrugated gasket 8 between clutch shaft bearing 4 and end cap 9 the insides, effect is the gap of regulating between end cap 9 and the clutch shaft bearing 4; One end of rotating shaft 6 passes above-mentioned end cap 9 and stretches out end cap 9 outsides, is fixed with a fan blade 10 on this section axle, and the outside of fan blade 10 is provided with a fan housing 11 that fixes by screw with end cap 9; Also have a convex shoulder on one section axle of the output of the rotating shaft 6 of magneto rotor assembly, second bearing 7 be fixed in this section rotating shaft 6 by this convex shoulder and the ccontaining bearing pedestal 17 that is positioned shell 1 Closed End in.
When using this motor, only need the lead that is connected with winding 3 that draw the side of the field frame assembly shell 1 of this AC brushless motor is divided into two bundles, be assembled into two porous plugs 15 of five holes and seven apertures in the human head respectively, five cores and two multi-core sockets of seven cores, 14 backs that are inserted into driving governor 12 shell correspondences form electrical connection; And oppositely draw two leads again from five hole plugs of porous plug 15 and connect into a single phase poaer supply plug, be inserted on the 220V AC outlet.Also there is a branch of lead to draw and be assembled into one six hole plug on the subsidiary speed-regulating switch 13, be inserted on the 6-pin socket on driving governor 12 shells and be electrically connected, thereby form whole drive circuit and control circuit, by regulating the potentiometer on the speed-regulating switch 13, reach the purpose of stepless speed regulation and braking.

Claims (6)

1. permanent magnet AC brushless motor, form by motor body and driving and speed governing brake apparatus two parts, described motor body includes field frame assembly, rotor assembly, clutch shaft bearing (4), second bearing (7), end cap (9), fan blade (10) and fan housing (11), an end that it is characterized in that motor body is fixed with end cap (9), be provided with the magneto rotor assembly of its axial rotation relatively in the inside of field frame assembly, described rotor assembly is made of the rotating shaft (6) at center and peripheral rotor (5) body made from permanent magnetic material, described rotating shaft (6) is passed clutch shaft bearing (4) and is located on the end cap (9), between clutch shaft bearing (4) and end cap (9), be provided with a corrugated gasket (8), rotating shaft (6) is stretched out on outer one section of end cap (9) and is fixed with a fan blade (10), is provided with a fan housing (11) that fixes with end cap (9) in the outside of fan blade (10); Described driving and speed governing brake apparatus are made up of driving governor (12), speed-regulating switch (13), the shell of described driving governor (12) is provided with five cores (A), six cores (B), three multi-core sockets of seven cores (C) (14), respectively with porous plug (15) in the six hole plugs (b) of five hole plugs (a), speed-regulating switch (13) lead-out wire of power line and the corresponding electrical connection of seven apertures in the human head plug (c) of stator winding (3) lead-out wire of motor.
2. permanent magnet AC brushless motor according to claim 1 is characterized in that described field frame assembly comprises shell (1), support and installation foot hole (2) and the winding (3) more than set at least one pair of in shell (1).
3. permanent magnet AC brushless motor according to claim 1 is characterized in that the two ends of the rotating shaft (6) at described rotor (5) body center are respectively equipped with convex shoulder, and clutch shaft bearing (4) and second bearing (7) are enclosed within respectively on two convex shoulders.
4. permanent magnet AC brushless motor according to claim 1 is characterized in that described field frame assembly shell (1) but the bottom is provided with support and installation foot hole (2) of the vertical or horizontal fixedly usefulness of power supply machine.
5. permanent magnet AC brushless motor according to claim 1, it is characterized in that described end cap (9) the inside is provided with a bearing pedestal (16), the blind end of described field frame assembly also is provided with a bearing pedestal (17), and described clutch shaft bearing (4) and second bearing (7) be ccontaining being positioned in these two bearing pedestals respectively just.
6. permanent magnet AC brushless motor according to claim 1 is characterized in that described driving governor (12) is a box body, in establish electronic component and wiring board.
CNB2005100698245A 2005-04-29 2005-04-29 Permanent magnet AC brushless motor Active CN100409542C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2005100698245A CN100409542C (en) 2005-04-29 2005-04-29 Permanent magnet AC brushless motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2005100698245A CN100409542C (en) 2005-04-29 2005-04-29 Permanent magnet AC brushless motor

Publications (2)

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CN1674407A CN1674407A (en) 2005-09-28
CN100409542C true CN100409542C (en) 2008-08-06

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ID=35046739

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Application Number Title Priority Date Filing Date
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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1834917B1 (en) 2006-03-16 2015-05-20 ThyssenKrupp Aufzugswerke GmbH Elevator system with an electric motor
CN101436810B (en) * 2008-12-01 2011-04-20 卢义生 Permanent magnet AC motor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2038298U (en) * 1988-11-17 1989-05-24 湖南淮海仪表厂 Permanent-magnet d.c. motor without brush
CN2110948U (en) * 1990-07-31 1992-07-22 德昌电机股份有限公司 End cover for motor
JP2001045687A (en) * 1999-07-30 2001-02-16 Fujitsu General Ltd Rotor of motor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2038298U (en) * 1988-11-17 1989-05-24 湖南淮海仪表厂 Permanent-magnet d.c. motor without brush
CN2110948U (en) * 1990-07-31 1992-07-22 德昌电机股份有限公司 End cover for motor
JP2001045687A (en) * 1999-07-30 2001-02-16 Fujitsu General Ltd Rotor of motor

Also Published As

Publication number Publication date
CN1674407A (en) 2005-09-28

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PB01 Publication
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C14 Grant of patent or utility model
CP01 Change in the name or title of a patent holder

Address after: Zhejiang province Fenghua City Xikou town Wu Ling Lu block No. 3 Building No. 3

Patentee after: Ningbo state sewing equipment Technology Co., Ltd.

Address before: Zhejiang province Fenghua City Xikou town Wu Ling Lu block No. 3 Building No. 3

Patentee before: Zhongbang Electric Machine Science & Technology Co., Ltd., Ningbo

C56 Change in the name or address of the patentee

Owner name: NINGBO ZHONGBANG SEWING EQUIPMENT SCIENCE AND TECH

Free format text: FORMER NAME: NINGBO ZHONGBANG MOTOR TECHNOLOGY CO., LTD.

CP03 Change of name, title or address

Address after: 317000, the South China Sea Jiangnan Street office seed farm

Patentee after: Taizhou state sewing equipment Technology Co., Ltd.

Address before: 315502 Zhejiang province Fenghua City Xikou town Wu Ling Lu block No. 3 Building No. 3

Patentee before: Ningbo state sewing equipment Technology Co., Ltd.

C56 Change in the name or address of the patentee

Owner name: TAIZHOU ZHONGBANG SEWING EQUIPMENT HIGH-TECH CO.,

Free format text: FORMER NAME: NINGBO ZHONGBANG SEWING EQUIPMENT CO., LTD

CP03 Change of name, title or address

Address after: 317000 No. 71 River Road, Jiangnan street, Linhai City, Zhejiang, 181

Patentee after: Zhejiang Zobow Mechanical and Electrical Tech Co., Ltd.

Address before: 317000, the South China Sea Jiangnan Street office seed farm

Patentee before: Taizhou state sewing equipment Technology Co., Ltd.

C56 Change in the name or address of the patentee

Owner name: ZHEJIANG ZHONGBANG ELECTR-MECHANICAL SCIENCE + TEC

Free format text: FORMER NAME: TAIZHOU ZHONGBANG SEWING EQUIPMENT SCIENCE + TECHNOLOGY CO., LTD.