CN203707907U - Permanent-magnet brushless direct-current motor - Google Patents

Permanent-magnet brushless direct-current motor Download PDF

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Publication number
CN203707907U
CN203707907U CN201320858347.0U CN201320858347U CN203707907U CN 203707907 U CN203707907 U CN 203707907U CN 201320858347 U CN201320858347 U CN 201320858347U CN 203707907 U CN203707907 U CN 203707907U
Authority
CN
China
Prior art keywords
permanent
ring
magnet brushless
iron core
electric machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201320858347.0U
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Chinese (zh)
Inventor
姜福进
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NINGBO EMP DC MOTOR DYNAMICS Co Ltd
Original Assignee
NINGBO EMP DC MOTOR DYNAMICS Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NINGBO EMP DC MOTOR DYNAMICS Co Ltd filed Critical NINGBO EMP DC MOTOR DYNAMICS Co Ltd
Priority to CN201320858347.0U priority Critical patent/CN203707907U/en
Application granted granted Critical
Publication of CN203707907U publication Critical patent/CN203707907U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a permanent-magnet brushless direct-current motor belonging to the technical field of motors, which solves the problem in the prior art that existing permanent-magnet brushless direct-current motors are complicated in structure and difficult to mount. The permanent-magnet brushless direct-current motor comprises a shell, a stator arranged in the shell and a rotor arranged in the stator. The two ends of the shell are provided with a front end cover and a rear end cover. The rotor is erected on the front end cover and the rear end cover. The rotor comprises a rotating shaft, an iron core arranged on the rotating shaft, and a magnetic shoe. The two ends of the iron core are respectively provided with an adjusting check ring. The two adjusting check rings are connected together through a plurality of connecting rods. The connecting rods are configured to run through the iron core and are circumferentially and uniformly distributed on the iron core. The adjusting check rings are provided with installation holes. The two ends of the magnetic shoe are respectively configured to penetrate through the installation holes and are attached onto the surface of the iron core. The outer surface of the stator is provided with the insulating material. The permanent-magnet brushless direct-current motor is high in utilization rate of electric energy and simple in installation.

Description

Permanent-magnet brushless DC electric machine
Technical field
The utility model belongs to technical field of motors, relates to a kind of permanent-magnet brushless DC electric machine.
Background technology
Chinese patent CN101286684A has announced that one can conveniently improve power of motor and permanent magnet is not allowed flimsy permanent-magnet brushless DC electric machine, it is made up of p-m rotor, stator, winding, end cap and casing, p-m rotor is made up of the permanent magnet and the rotor rack that are enclosed within rotating shaft, and permanent magnet adopts multistage permanent magnet composition.
The complicated structure of above-mentioned permanent-magnet brushless DC electric machine, utilization rate of electrical is not high, installs complicated.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, proposed a kind of utilization rate of electrical high, simple permanent-magnet brushless DC electric machine is installed.
The purpose of this utility model can realize by following technical proposal: a kind of permanent-magnet brushless DC electric machine, comprise casing, be arranged on the stator in casing and be arranged on the rotor in stator, the two ends of casing are provided with front end housing and rear end cap, rotor rack is located on front end housing and rear end cap, it is characterized in that, described rotor comprises rotating shaft, be arranged on iron core and magnetic shoe in rotating shaft, described iron core two ends are respectively arranged with adjusting back-up ring, two regulate back-up ring to connect by some connecting rods, described connecting rod runs through iron core and is circumferentially evenly distributed on iron core, on described adjusting back-up ring, offer installing hole, described magnetic shoe two ends are passed respectively installing hole and are close to iron core surface, the outer surface of described stator is provided with insulating material.
The utility model is under initial condition, iron core is arranged in rotating shaft, adjusting shield ring sleeve is set in rotating shaft and is distributed in the two ends of iron core, by magnetic shoe wear successively regulate on back-up ring and install firm, stator is arranged in casing, rotor is placed in stator, and the two ends of rotor are separately installed with bearing, and bearing outer ring is arranged on front end housing and rear end cap respectively.Magnetic shoe is worn successively and regulates on back-up ring and install firmly, install simply, easy to adjust, be provided with insulating material at the outer surface of stator and can make the magnetic flux leakage of coil reduce power consumption.
In above-mentioned a kind of permanent-magnet brushless DC electric machine, described magnetic shoe cross section is strip, and its cross section is made up of two sections of isocentric circular arc and the line that is connected to circular arc two ends.
In above-mentioned a kind of permanent-magnet brushless DC electric machine, on described adjusting back-up ring, be provided with boss, on boss, offer screwed hole, in described screwed hole, be equipped with securing member, and securing member is pushed against magnetic shoe to regulate on back-up ring.
In above-mentioned a kind of permanent-magnet brushless DC electric machine, a side of described adjusting back-up ring is provided with reinforcement, and described reinforcement is regulating on back-up ring along the radially vertical distribution of rotating shaft.
In above-mentioned a kind of permanent-magnet brushless DC electric machine, described adjusting back-up ring is made up of the material of exhausted magnetic.
In above-mentioned a kind of permanent-magnet brushless DC electric machine, described connecting rod is made up of electric conducting material.
In above-mentioned a kind of permanent-magnet brushless DC electric machine, on described casing, be provided with cable joint, described cable joint inner hollow, described cable joint communicates with casing inside.
In above-mentioned a kind of permanent-magnet brushless DC electric machine, on described front end housing, be provided with mounting blocks, on described mounting blocks, offer mounting hole.
Compared with prior art, the utlity model has several advantages:
1, magnetic shoe wears and regulates back-up ring, by securing member, magnetic shoe is abutted to and is regulated on back-up ring, installs simple, easy to adjust.
2, arrange and regulate the dynamic balancing that back-up ring can also simple adjustment rotor, regulate simple.
3, regulate on back-up ring reinforcement is set, the air circulation in can drive motor, reduces the temperature rise of rotor and stator.
4, on stator outer surface, be provided with insulating material, effectively reduced the leakage field of stator, improved the utilance of electric energy.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present utility model.
Fig. 2 is structural representation of the present utility model.
Fig. 3 is the structural representation that regulates back-up ring in the utility model.
In figure, 10, front end housing; 11, mounting blocks; 12, mounting hole; 20, stator; 30, casing; 31, cavity; 32, cable joint; 33, bearing; 40, rotor; 41, regulate back-up ring; 411, installing hole; 412, boss; 413, screwed hole; 414, reinforcement; 415, fixing hole; 42, magnetic shoe; 43, through hole; 44, connecting rod; 45, securing member; 46, rotating shaft; 47, iron core; 50, rear end cap; 60, cavity.
Embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
As shown in Figure 1, this permanent-magnet brushless DC electric machine comprises casing 30, be arranged on stator 20 on casing 30 and the rotor 40 in stator 20 interior rotations, the two ends of rotor 40 are provided with bearing 33, and the two ends of casing 30 are provided with front end housing 10 and rear end cap 50, and front end housing 10 is run through in one end of rotor 40, bearing 33 is installed on front end housing 10, the bearing 33 that the other end of rotor 40 is installed is installed on rear end cap 50, can not give prominence to rear end cap 50, on the outer surface of stator 20, is provided with insulating material.
The length of casing 30 is greater than the length of stator 20, between casing 30 and stator 20, form a vacant cavity 60, on casing 30, be also provided with cable joint 32, cable joint 32 inside are cavitys 31, cavity 31 is communicated with cavity 60, in the cavity 31 of the wiring of the winding on stator 20 along cavity 60 spaces from cable joint 32, passes.
As shown in figures 1 and 3, rotor 40 comprises rotating shaft 46, being arranged on the iron core 47 in rotating shaft 46 and the magnetic shoe 42 being arranged on iron core 47 forms, be provided with at the two ends of iron core 47 and regulate back-up ring 41, regulate on back-up ring 41 and offer fixing hole 415, on iron core 47, offer and fixing hole 415 through hole 43 one to one, connecting rod 44 is connected in iron core 47 two ends through fixing hole 415 and through hole 43 by adjusting back-up ring 41, regulate on back-up ring 41 and also offer installing hole 411, magnetic shoe 42 is installed to and regulates on back-up ring 41 through adjustment hole, regulate on back-up ring 41 and be provided with boss 412, on boss 412, offer screwed hole 413, securing member 45 is pushed against magnetic shoe 42 to regulate on back-up ring 41 through screwed hole 413.
Regulate a side of back-up ring 41 to be provided with reinforcement 414, reinforcement 414 is regulating on back-up ring 41 along the radially vertical distribution of rotating shaft 46, rotor 40 rotates to drive and regulates back-up ring 41 to rotate, reinforcement 414 can produce wind, reduce the temperature on rotor 40 and stator 20, accelerate distributing of heat, regulate back-up ring 41 to adopt non-magnetic material to make, connecting rod 44 is to adopt the material of conduction to make.
In the time that stator 20 coils provide exciting curent to produce magnetic field, connecting rod 44 cutting magnetic fields in iron core 47 on rotor 40, produce electromotive force, form loop by conductive adjusting back-up ring 41, thus in connecting rod 44 generation current, charged connecting rod 44 is subject to the effect of power in magnetic field, thereby increased the staring torque of motor, toggle speed is accelerated, start stable, add and regulate back-up ring 41 can increase moment of inertia, thereby cause noise of motor lower.
Magnetic shoe 42 cross sections are strip, and its cross section is made up of with the line that is connected respectively circular arc two ends two sections of isocentric circular arc, regulate the installing hole 411 on back-up ring 41 to match with the outline of magnetic shoe 42.
As shown in Figure 2, be provided with mounting blocks 11 on front end housing 10, offer mounting hole 12 on mounting blocks 11, motor can be provided with mechanically by mounting hole 12.
The utility model is under initial condition, stator 20 is arranged in casing 30, iron core 47 is installed in rotating shaft 46, regulate back-up ring 41 to be installed to iron core 47 two ends, and make fixing hole 415 and through hole 43 corresponding, connecting rod 44 passes along through hole, and will regulate back-up ring 41 to be connected in the both sides of iron core 47, magnetic shoe 42 is fixed to the two ends that regulate back-up ring 41 along installing hole 411, regulate the securing member 45 on boss 412, magnetic shoe 42 is pushed against and is regulated on back-up ring 41, rotating shaft 46 is passed front end housing 10 and is erected on front end housing 10 by bearing 33, the end of the other end is provided with bearing 33, bearing 33 sets up on rear end cap 50, between stator 20 and rear end cap 50 and casing 30, form a cavity 60, power line on stator 20 reaches outside casing 30 along cavity 60 and cavity 31, cover after rear end cap 50, bolt is strained front end housing 10 to casing 30 through rear end cap 50, regulate back-up ring 41 to regulate the dynamic balancing of rotor 40 by correction, make motor rotation steady, noise is little, after installing, complete machine is installed on machine by the mounting hole 12 on front end housing 10.
Compared with prior art, the utlity model has several advantages:
1, magnetic shoe 42 wears and regulates back-up ring 41, by securing member 45, magnetic shoe 42 is abutted to and is regulated on back-up ring 41, installs simple, easy to adjust.
2, arrange and regulate back-up ring 41 can pass through the dynamic balancing of duplicate removal method simple adjustment rotor 40, regulate simple.
3, regulate on back-up ring 41 reinforcement 414 is set, the air circulation in can drive motor, reduces the temperature rise of rotor 40 and stator 20.
4, on stator 20 outer surfaces, be provided with insulating material, effectively reduced the leakage field of stator 20, improved the utilance of electric energy.
5, charged connecting rod 44 is subject to the effect of power in magnetic field, thereby has increased the staring torque of motor, and toggle speed is accelerated, and noise is low.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.

Claims (8)

1. a permanent-magnet brushless DC electric machine, comprise casing, be arranged on the stator in casing and be arranged on the rotor in stator, the two ends of casing are provided with front end housing and rear end cap, rotor rack is located on front end housing and rear end cap, it is characterized in that, described rotor comprises rotating shaft, be arranged on iron core and magnetic shoe in rotating shaft, described iron core two ends are respectively arranged with adjusting back-up ring, two regulate back-up ring to connect by some connecting rods, described connecting rod runs through iron core and is circumferentially evenly distributed on iron core, on described adjusting back-up ring, offer installing hole, described magnetic shoe two ends are passed respectively installing hole and are close to iron core surface, the outer surface of described stator is provided with insulating material.
2. a kind of permanent-magnet brushless DC electric machine according to claim 1, is characterized in that, described magnetic shoe cross section is strip, and its cross section is made up of two sections of isocentric circular arc and the line that is connected to circular arc two ends.
3. a kind of permanent-magnet brushless DC electric machine according to claim 1 and 2, is characterized in that, on described adjusting back-up ring, is provided with boss, offers screwed hole on boss, in described screwed hole, is equipped with securing member, and securing member is pushed against magnetic shoe to regulate on back-up ring.
4. a kind of permanent-magnet brushless DC electric machine according to claim 1 and 2, is characterized in that, a side of described adjusting back-up ring is provided with reinforcement, and described reinforcement is regulating on back-up ring along the radially vertical distribution of rotating shaft.
5. a kind of permanent-magnet brushless DC electric machine according to claim 1 and 2, is characterized in that, described adjusting back-up ring is made up of the material of exhausted magnetic.
6. a kind of permanent-magnet brushless DC electric machine according to claim 1 and 2, is characterized in that, described connecting rod is made up of electric conducting material.
7. a kind of permanent-magnet brushless DC electric machine according to claim 1 and 2, is characterized in that, on described casing, is provided with cable joint, described cable joint inner hollow, and described cable joint communicates with casing inside.
8. a kind of permanent-magnet brushless DC electric machine according to claim 1 and 2, is characterized in that, is provided with some mounting blocks on described front end housing, on described mounting blocks, offers mounting hole.
CN201320858347.0U 2013-12-24 2013-12-24 Permanent-magnet brushless direct-current motor Expired - Fee Related CN203707907U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320858347.0U CN203707907U (en) 2013-12-24 2013-12-24 Permanent-magnet brushless direct-current motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320858347.0U CN203707907U (en) 2013-12-24 2013-12-24 Permanent-magnet brushless direct-current motor

Publications (1)

Publication Number Publication Date
CN203707907U true CN203707907U (en) 2014-07-09

Family

ID=51058287

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320858347.0U Expired - Fee Related CN203707907U (en) 2013-12-24 2013-12-24 Permanent-magnet brushless direct-current motor

Country Status (1)

Country Link
CN (1) CN203707907U (en)

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140709

Termination date: 20181224

CF01 Termination of patent right due to non-payment of annual fee