CN203398968U - Permanent magnet direct current brushless motor structure - Google Patents
Permanent magnet direct current brushless motor structure Download PDFInfo
- Publication number
- CN203398968U CN203398968U CN201320546549.1U CN201320546549U CN203398968U CN 203398968 U CN203398968 U CN 203398968U CN 201320546549 U CN201320546549 U CN 201320546549U CN 203398968 U CN203398968 U CN 203398968U
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- chamber
- permanent magnet
- hall element
- brushless motor
- electronic commutation
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Abstract
The utility model discloses a permanent magnet direct current brushless motor structure. The permanent magnet direct current brushless motor structure includes a motor shell; and a stator winding, a rotator, and electronic commutation circuits which are fixed in the shell. The motor shell is provided with a first cavity and a second cavity, wherein the stator winding and the rotator are disposed in the first cavity, and a rotation shaft of the rotator stretches into the second cavity. The rotation shaft in the second cavity is provided with a fixation plate which rotates with the rotator, and magnetic steels for position detection are disposed on the fixation plate in a symmetrical manner. The electronic commutation circuits are fixed in the second cavity, and each electronic commutation circuit includes a Hall element and a control circuit, wherein the Hall element is arranged in a concentric and matching manner with the corresponding magnetic steel. In the permanent magnet direct current brushless motor structure, the stator winding, the rotator, and the electronic commutation circuits are respectively arranged in two independent cavities, the cavity in which the electronic commutation circuits are arranged, is provided with a heat radiation structure, and an adjustment sliding bench which is capable of adjusting the distance between each Hall element and the corresponding magnetic steel, is arranged, so that work reliability is improved and service life is expanded.
Description
technical fieldthe utility model relates to permanent magnet direct current motor technical field, relates in particular to a kind of permanent magnet DC brushless motor structure.
background technologypermanent magnet DC motor is according to there being brushless can be divided into permanent-magnet brushless DC electric machine and permanent magnet brush direct current machine.Brushless, permanently excited direct current motor is by one or more permanent magnet, to be set up the DC motor in magnetic field, can carry out speed governing easily by changing armature voltage.Brushless, permanently excited direct current motor has the advantages such as volume is little, efficiency is high, simple in structure, copper consumption is few, is the main Types of low powered DC motor.
Permanent magnet DC brushless motor is mainly by permanent magnet motor body, rotor-position sensor and electronic commutation the electric circuit constitute.Adopt electronic commutation circuit to replace the mechanical commutator in brush motor, the defect that noise, spark, the life-span of having avoided mechanical commutation to produce are short etc., but the electronic commutation circuit of existing permanent magnet DC brushless motor is to be generally fixed in the stator of motor, during machine operation, easily generate heat, electronic commutation circuit is at high temperature worked for a long time and is easily damaged, and affects motor and uses.
summary of the inventionfor overcoming the deficiencies in the prior art, the utility model provides a kind of working stability, permanent magnet DC brushless motor structure that reliability is high.
The utility model is to reach the technical scheme that above-mentioned technical purpose adopts to be: a kind of permanent magnet DC brushless motor structure, comprise electric machine casing, be fixed on the stator winding in housing, rotor and electronic commutation circuit, wherein said electric machine casing is provided with the first chamber and the second chamber, described stator winding and rotor are arranged in the first chamber, the rotating shaft of described rotor extends in the second chamber, rotating shaft in described the second chamber is provided with follows the fixed disk that rotor rotates, on described fixed disk, be arranged with position probing magnet steel, described electronic commutation circuit is fixed in the second chamber, described electronic commutation circuit comprises Hall element and control circuit, described Hall element is the concentric setting of mating with magnet steel, described magnet steel is located at inner ring, described Hall element is located at outer ring.
In rotating shaft in described the second chamber, be also provided with cooling fan blade, described the second chamber is provided with the gas channel being in communication with the outside, and makes the temperature in the second chamber can be not too high, guarantees the normal operation of electronic commutation circuit.
The quantity of described magnet steel is even number.
Described Hall element is fixed on the adjusting slide unit that can adjust spacing between described Hall element and magnet steel, by adjusting, regulates slide unit to change the spacing between described Hall element and magnet steel, makes the detection signal of Hall element more reliable.
The beneficial effects of the utility model are: adopt said structure, electric machine casing is made as to two independently chambers, stator winding, rotor and electronic commutation circuit are divided into two independently chambers, chamber at electronic commutation circuit place increases radiator structure, and the adjusting slide unit that can adjust spacing between described Hall element and magnet steel is set, makes the detection signal of Hall element more reliable, the operational environment of electronic commutation circuit is more suitable, improve functional reliability, strengthen its useful life.
accompanying drawing explanationbelow in conjunction with drawings and Examples, the utility model is described in further detail.Wherein:
Fig. 1 is the schematic block circuit diagram of the utility model permanent magnet DC brushless motor structure.
embodimentby describing technology contents of the present utility model, structural feature in detail, being realized object and effect, below in conjunction with execution mode and coordinate accompanying drawing to be explained in detail.
Refer to shown in Fig. 1, the utility model permanent magnet DC brushless motor structure comprises electric machine casing 1, be fixed on the stator winding 2 in housing 1, rotor 3 and electronic commutation circuit 4, wherein said electric machine casing 1 is provided with the first chamber 11 and the second chamber 12, described stator winding 2 and rotor 3 are arranged in the first chamber 11, the rotating shaft 31 of described rotor 3 extends in the second chamber 12, rotating shaft 31 in described the second chamber 12 is provided with follows the fixed disk 32 that rotor 3 rotates, on described fixed disk 32, be arranged with magnet steel 5 for position probing, described electronic commutation circuit 4 is fixed in the second chamber 12, described electronic commutation circuit 4 comprises Hall element 41 and control circuit 42, described Hall element 41 is the concentric setting of mating with magnet steel 5, described magnet steel 5 is located at inner ring, described Hall element 41 is located at outer ring.
In rotating shaft 31 in described the second chamber 12, be also provided with cooling fan blade 33, described the second chamber 12 is provided with the gas channel 121 being in communication with the outside, and makes the temperature in the second chamber 12 can be not too high, guarantees 4 normal operations of electronic commutation circuit.
The quantity of described magnet steel 5 is even number.
Described Hall element 41 is fixed on the adjusting slide unit 43 that can adjust spacing between described Hall element 41 and magnet steel 5, the spacing that regulates slide unit 43 to change between described Hall element 41 and magnet steel 5 by adjusting, makes the detection signal of Hall element 41 more reliable.
The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure transformation that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (4)
1. a permanent magnet DC brushless motor structure, comprise electric machine casing, be fixed on the stator winding in housing, rotor and electronic commutation circuit, it is characterized in that: described electric machine casing is provided with the first chamber and the second chamber, described stator winding and rotor are arranged in the first chamber, the rotating shaft of described rotor extends in the second chamber, rotating shaft in described the second chamber is provided with follows the fixed disk that rotor rotates, on described fixed disk, be arranged with position probing magnet steel, described electronic commutation circuit is fixed in the second chamber, described electronic commutation circuit comprises Hall element and control circuit, described Hall element is the concentric setting of mating with magnet steel, described magnet steel is located at inner ring, described Hall element is located at outer ring.
2. a kind of permanent magnet DC brushless motor structure according to claim 1, is characterized in that: in the rotating shaft in described the second chamber, be also provided with cooling fan blade, described the second chamber is provided with the gas channel being in communication with the outside.
3. a kind of permanent magnet DC brushless motor structure according to claim 1, is characterized in that: the quantity of described magnet steel is even number.
4. a kind of permanent magnet DC brushless motor structure according to claim 1, is characterized in that: described Hall element is fixed on the adjusting slide unit that can adjust spacing between described Hall element and magnet steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320546549.1U CN203398968U (en) | 2013-09-04 | 2013-09-04 | Permanent magnet direct current brushless motor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320546549.1U CN203398968U (en) | 2013-09-04 | 2013-09-04 | Permanent magnet direct current brushless motor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203398968U true CN203398968U (en) | 2014-01-15 |
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ID=49910466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320546549.1U Expired - Fee Related CN203398968U (en) | 2013-09-04 | 2013-09-04 | Permanent magnet direct current brushless motor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203398968U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104979923A (en) * | 2015-07-13 | 2015-10-14 | 中能世华(北京)节能科技有限公司 | Novel energy-saving motor |
| CN109301988A (en) * | 2018-11-02 | 2019-02-01 | 深圳市太美亚电子科技有限公司 | A kind of brushless DC motor positioning device |
-
2013
- 2013-09-04 CN CN201320546549.1U patent/CN203398968U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104979923A (en) * | 2015-07-13 | 2015-10-14 | 中能世华(北京)节能科技有限公司 | Novel energy-saving motor |
| CN109301988A (en) * | 2018-11-02 | 2019-02-01 | 深圳市太美亚电子科技有限公司 | A kind of brushless DC motor positioning device |
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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: 20140115 Termination date: 20170904 |