CN204835737U - Low -voltage direct current machine, dust catcher round brush and domestic appliance - Google Patents
Low -voltage direct current machine, dust catcher round brush and domestic appliance Download PDFInfo
- Publication number
- CN204835737U CN204835737U CN201520431590.3U CN201520431590U CN204835737U CN 204835737 U CN204835737 U CN 204835737U CN 201520431590 U CN201520431590 U CN 201520431590U CN 204835737 U CN204835737 U CN 204835737U
- Authority
- CN
- China
- Prior art keywords
- motor
- low voltage
- rotor
- magnetic core
- rotor magnetic
- 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
Links
- 239000000428 dust Substances 0.000 title claims abstract description 5
- 238000004804 winding Methods 0.000 claims abstract description 15
- 229910000859 α-Fe Inorganic materials 0.000 claims description 11
- 230000004907 flux Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract 1
- 239000000758 substrate Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
Landscapes
- Dc Machiner (AREA)
Abstract
The utility model discloses a low -voltage direct current machine, dust catcher round brush and domestic appliance. The motor includes stator and the rotor rotatory for the stator, the rotor includes the pivot, be fixed in the rotor magnetic core of pivot, be fixed in pivot and the commutator adjacent with the rotor magnetic core, twine in the pole piece of rotor magnetic core and the rotor winding who is connected with the commutator electricity, the stator includes cask form casing, install in the permanent magnet of casing internal surface and with commutator sliding contact's brush, the input voltage of motor is at 7-36V within range, the external diameter of rotor magnetic core with the ratio of the external diameter of casing is 67%-75%. The embodiment of the utility model provides a can improve the output of motor under the prerequisite that does not increase the motor size.
Description
Technical field
The utility model relates to the magneto being particularly useful for household electrical appliance (as hand held cleaner).
Background technology
All motor is used in current many devices and equipment.Much equipment (household electrical appliance such as such as hand held cleaner) all wishes that motor is less, lighter, more powerful, to reduce the size of equipment or increase power of motor with lifting means performance under the prerequisite not increasing equipment size under the prerequisite meeting identical performance.
Low voltage DC motor is adopted in more existing household electrical appliance.Low voltage DC motor comprises stators and rotators.Stator has drum-shaped housing and is fixed to the permanent magnet of shell inner surface.Rotor has rotor magnetic core and is wound in the rotor coil of rotor magnetic core.Rotor pitch of the laps is powered by low-voltage dc voltage.In the existing 300 serial low voltage DC motors of one, the external diameter of the housing of motor is about 27.6mm, the external diameter of rotor magnetic core is about 18mm, the ratio about 65.2% of the external diameter of rotor magnetic core and the housing outer diameter of motor, when the input voltage of motor is 16.2V, the rated output power of motor is generally less than 30 watts.
The utility model aims to provide a kind of novel low voltage DC motor, can provide higher power output when not increasing shell dimension.
Utility model content
The utility model embodiment provides a kind of low voltage DC motor on the one hand, the rotor comprising stator and rotate relative to stator, described rotor comprises rotating shaft, be fixed on the rotor magnetic core of rotating shaft, be fixed on rotating shaft and the commutator adjacent with rotor magnetic core, be wound in the pole portion of rotor magnetic core and the rotor windings be electrically connected with commutator, described stator comprises barrel-shaped housing, be installed in the permanent magnet of shell inner surface, and with the brush of commutator sliding contact, the input voltage of described motor is within the scope of 7 ~ 36V, the external diameter of described rotor magnetic core is 67% ~ 75% with the ratio of the external diameter of described housing.
Preferably, the external diameter of described rotor magnetic core is 67.6% ~ 73.8% with the ratio of the external diameter of described housing.
Preferably, described permanent magnet is ferrite lattice.
Preferably, described ferrite lattice is 35.8 ± 1.6kj/m by maximum magnetic energy product value BHmax
3material make.
Preferably, described ferrite lattice is made up of the material of residual magnetic flux density Br be 430 ± 10mT, coercivity H b to be 318.5 ± 7.9kA/m, HCJ Hcj be 358.3 ± 7.9kA/m.
Preferably, the external diameter of described housing is 27.5mm ± 0.3mm, and the external diameter of described rotor magnetic core is 19.4mm ± 0.2mm.
Preferably, the rated output power of described motor reaches 40 watts.
Preferably, described rotor magnetic core has 5 or 10 pole portion, and described stator has 2 permanent-magnet poles, and described commutator has 5 commutator segments.
Optionally, the diameter of wire of the rotor windings of described low voltage DC motor is within the scope of 0.1mm ~ 0.5mm.
Preferably, the diameter of wire of the rotor windings of described low voltage DC motor is within the scope of 0.3mm ~ 0.35mm.
The utility model provides on the other hand a kind of dust collector rolling brush driven by such as above-mentioned low voltage DC motor.
The utility model provides a kind of household electrical appliance with above-mentioned low voltage DC motor more on the one hand.
In the utility model illustrated embodiment, owing to employing more high-grade ferrite lattice, therefore, it is possible to reduce the thickness of magnet under the prerequisite ensureing enough magnetic properties, the size of rotor magnetic core can be increased like this, make motor that larger space can be provided to hold more rotor windings, thus obtain higher power output.Further, owing to having larger thermal mass, the operating temperature rise degree of motor can be reduced.Further, owing to allowing rotor windings to use thicker wire, the copper loss of motor can also be reduced.In addition, compared with employing rare-earth magnet, the cost of ferrite lattice is lower, and therefore the cost of motor is also lower.
Accompanying drawing explanation
Fig. 1 illustrates the low voltage DC motor had according to the utility model preferred embodiment;
Fig. 2 illustrates the axial cutaway view of Fig. 1 mesolow direct current machine;
Fig. 3 illustrates the rotor magnetic core of Fig. 1 mesolow direct current machine.
Embodiment
Below in conjunction with accompanying drawing, by describing in detail embodiment of the present utility model, will make the technical solution of the utility model and other beneficial effects apparent.Be appreciated that accompanying drawing only provides reference and explanation use, be not used for being limited the utility model.The size shown in accompanying drawing is only used to be convenient to clear description, and does not limit proportionate relationship.
Fig. 1 illustrates the low voltage DC motor 16 had according to the utility model preferred embodiment, comprise stator and can relative stator rotate rotor.Rotor comprises rotating shaft 22, be fixed on the rotor magnetic core 24 of rotating shaft 22, be fixed on rotating shaft 22 and the commutator 26 adjacent with rotor magnetic core 24 and be wound in each pole portion 30 of rotor magnetic core 24 and the rotor windings 28 be electrically connected with commutator 26.Rotor magnetic core 24 can be formed along rotating shaft is axially stacking by some rotor chips.The groove that can hold rotor windings is formed between the portion of adjacent rotor pole.One fan 32 is fixed on rotor magnetic core 24, with opening 34 acting in conjunction on housing 36 with when rotated with air-flow cooling motor.Preferably, rotor magnetic core 24 has 5 pole portion, and commutator 26 has 5 commutator segments.In another embodiment, rotor magnetic core 24 can have 10 pole portions.
Stator comprises the barrel-shaped housing 36 with openend and blind end 38 extended vertically, the two panels permanent magnet 40 of the inner surface being fixed to housing 36, the end cap 42 of the openend of closure shell 36 and a pair brush assembly of electric.Two panels permanent magnet 40 forms two permanent-magnet poles.Housing 36 is made up of permeability magnetic material.One flux ring 44 is fixed to the outer surface of housing 36 to reduce the magnetic resistance of the magnetic flux loop line of housing 36.End cap 42 is fixedly installed to housing 36.Rotating shaft 22 is rotatably supported by the two bearings 46 of the blind end 38 laying respectively at end cap 42 and housing.Rotor magnetic core is relative with magnet 40 and establish and have air gap between the two.
The annular sidewall 50 that end cap 42 has substrate 48, extend internally vertically from substrate 48 and from the substrate 48 outward extending bearing pedestal 52 for supporting a bearing 46 vertically.Sidewall 50 and substrate 48 form the chamber that can hold commutator 16 jointly.Each brush assembly of electric has a brush holder 54, and brush holder 54 radially extends internally from sidewall 50 and communicates with above-mentioned chamber.One brush 56 to be installed in slidably in brush holder 54 and under the resiliency supported of an elastic component (not shown) with commutator 26 sliding contact.End cap 42 is also provided with two for being electrically connected the electrical terminals 58 of external power source.Each electrical terminals 58 is electrically connected with corresponding brush 56 through electric conductor (the brush pigtail as not shown).Like this, low-voltage dc voltage can be supplied to rotor windings 28 through electrical terminals 58, brush 56 and commutator 26.Wherein, described low-voltage dc voltage can be 7V ~ 36V, is preferably 12V ~ 20V, and that better is 16V ~ 17V.
In the utility model embodiment, permanent magnet 40 is the ferrite lattice of higher level, is preferably 35.8 ± 1.6kj/m by maximum magnetic energy product value BHmax
3, residual magnetic flux density Br be 430 ± 10mT, coercivity H b to be 318.5 ± 7.9kA/m, HCJ Hcj be 358.3 ± 7.9kA/m material make.The external diameter of rotor magnetic core and the ratio of electric machine casing external diameter are in 67% ~ 75% scope.
In the present embodiment, the diameter of wire of rotor windings is within the scope of 0.1mm ~ 0.5mm, and preferably within the scope of 0.3mm ~ 0.35mm, that better is 0.32mm.
In the example of 300 serial low voltage DC motors according to the above-mentioned preferred embodiment of the utility model, the outer diameter D 2 (being not counted in the thickness of flux ring 44) of electric machine casing is within the scope of 27.1mm ~ 28.1mm, and the outer diameter D 1 of rotor magnetic core is within the scope of 19mm ~ 20mm.The external diameter of rotor magnetic core and the ratio of electric machine casing external diameter are in 67.6% ~ 73.8% scope.Better, the external diameter of housing is 27.6mm, and the external diameter of rotor magnetic core is 19mm, and the external diameter of rotor magnetic core is 68.84% with the ratio of the external diameter of housing, and when the input voltage of motor is 16.2V, the rated output power of motor can reach 40 watts.
In the utility model illustrated embodiment, owing to employing more high-grade ferrite lattice, therefore, it is possible to reduce the thickness of magnet under the prerequisite ensureing enough magnetic properties, the size of rotor magnetic core can be increased like this.Thus, motor can provide larger space to hold more rotor windings, thus obtains higher power output.Further, owing to having larger thermal mass, the operating temperature rise degree of motor can be reduced, and, owing to allowing rotor windings to use thicker wire, the copper loss of motor can also be reduced.In addition, compared with employing rare-earth magnet, the cost of ferrite lattice is lower, and therefore the cost of motor is also lower.
The low voltage DC motor of the utility model above-described embodiment is particularly useful in the household electrical appliance such as the round brush such as driving hand held cleaner.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc.; such as stator also can have four or more permanent magnets, all should be included within protection range of the present utility model.
Claims (12)
1. a low voltage DC motor, the rotor comprising stator and rotate relative to stator, described rotor comprises rotating shaft, be fixed on the rotor magnetic core of rotating shaft, be fixed on rotating shaft and the commutator adjacent with rotor magnetic core, be wound in rotor magnetic core pole portion and the rotor windings be electrically connected with commutator, described stator comprises barrel-shaped housing, is installed in the permanent magnet of shell inner surface and the brush with commutator sliding contact, the input voltage of described motor is within the scope of 7 ~ 36V, and the external diameter of described rotor magnetic core is 67% ~ 75% with the ratio of the external diameter of described housing.
2. low voltage DC motor as claimed in claim 1, it is characterized in that, the external diameter of described rotor magnetic core is 67.6% ~ 73.8% with the ratio of the external diameter of described housing.
3. low voltage DC motor as claimed in claim 1, it is characterized in that, described permanent magnet is ferrite lattice.
4. low voltage DC motor as claimed in claim 3, it is characterized in that, described ferrite lattice is 35.8 ± 1.6kj/m by maximum magnetic energy product value BHmax
3material make.
5. low voltage DC motor as claimed in claim 3, is characterized in that, described ferrite lattice is made up of the material of residual magnetic flux density Br be 430 ± 10mT, coercivity H b to be 318.5 ± 7.9kA/m, HCJ Hcj be 358.3 ± 7.9kA/m.
6. low voltage DC motor as claimed in claim 3, it is characterized in that, the external diameter of described housing is 27.5mm ± 0.3mm, and the external diameter of described rotor magnetic core is 19.4mm ± 0.2mm.
7. the low voltage DC motor as described in any one of claim 1 to 6, is characterized in that, the rated output power of described motor reaches 40 watts.
8. low voltage DC motor as claimed in claim 3, it is characterized in that, described rotor magnetic core has 5 or 10 pole portion, and described stator has 2 permanent-magnet poles, and described commutator has 5 commutator segments.
9. low voltage DC motor as claimed in claim 3, it is characterized in that, the diameter of wire of the rotor windings of described low voltage DC motor is within the scope of 0.1mm ~ 0.5mm.
10. low voltage DC motor as claimed in claim 3, it is characterized in that, the diameter of wire of the rotor windings of described low voltage DC motor is within the scope of 0.3mm ~ 0.35mm.
11. 1 kinds of dust collector rolling brush driven by the low voltage DC motor as described in any one of claim 1 to 10.
12. 1 kinds of household electrical appliance with the low voltage DC motor as described in any one of claim 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520431590.3U CN204835737U (en) | 2015-06-19 | 2015-06-19 | Low -voltage direct current machine, dust catcher round brush and domestic appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520431590.3U CN204835737U (en) | 2015-06-19 | 2015-06-19 | Low -voltage direct current machine, dust catcher round brush and domestic appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204835737U true CN204835737U (en) | 2015-12-02 |
Family
ID=54693292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520431590.3U Expired - Fee Related CN204835737U (en) | 2015-06-19 | 2015-06-19 | Low -voltage direct current machine, dust catcher round brush and domestic appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204835737U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107104550A (en) * | 2016-02-19 | 2017-08-29 | 德昌电机(深圳)有限公司 | Motor and the round brush with the motor |
| CN107437880A (en) * | 2016-05-26 | 2017-12-05 | 德昌电机(深圳)有限公司 | Magneto and the household electrical appliance with the motor |
| JP2018011501A (en) * | 2016-06-17 | 2018-01-18 | ジョンソン エレクトリック ソシエテ アノニム | Permanent magnet direct current motor and hvac system using the same |
-
2015
- 2015-06-19 CN CN201520431590.3U patent/CN204835737U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107104550A (en) * | 2016-02-19 | 2017-08-29 | 德昌电机(深圳)有限公司 | Motor and the round brush with the motor |
| CN107104550B (en) * | 2016-02-19 | 2019-04-05 | 德昌电机(深圳)有限公司 | Motor and round brush with the motor |
| CN107437880A (en) * | 2016-05-26 | 2017-12-05 | 德昌电机(深圳)有限公司 | Magneto and the household electrical appliance with the motor |
| JP2017225335A (en) * | 2016-05-26 | 2017-12-21 | ジョンソン エレクトリック ソシエテ アノニム | Permanent magnet motor and home appliance having the same |
| JP2018011501A (en) * | 2016-06-17 | 2018-01-18 | ジョンソン エレクトリック ソシエテ アノニム | Permanent magnet direct current motor and hvac system using the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102801270B (en) | Magneto and the kitchen appliance with the motor | |
| EP2736155B1 (en) | Electric motor | |
| US20190222075A1 (en) | Low-voltage direct current motor | |
| US20170346350A1 (en) | Permanent Magnet Motor and Home Appliance Having the Same | |
| CN202004614U (en) | Ironless and brushless permanent magnet DC (Direct Current) motor with inner and outer rotors | |
| CN204835737U (en) | Low -voltage direct current machine, dust catcher round brush and domestic appliance | |
| CN102347646B (en) | General-purpose machine, there are the household electrical appliance of this motor | |
| CN103414301A (en) | Axial magnetic field ironless permanent magnet motor with split mounting type magnetic poles | |
| CN106921227A (en) | A kind of absence of commutator permanent magnet DC motor | |
| CN203151346U (en) | Rare-earth permanent magnet generator | |
| CN203027089U (en) | High-voltage and low-voltage fit double-commutator direct current permanent magnet motor | |
| CN210167931U (en) | Motor, dust collector rolling brush with motor and household appliance | |
| CN106257805B (en) | Low-voltage direct-current motor, dust collector rolling brush and household appliance | |
| CN202094779U (en) | Micro-motor and kitchen appliances adopting same | |
| CN210431043U (en) | Small-size efficient power generation device | |
| CN112054606A (en) | Oblique-straight multi-pole combined magnetizing magnet | |
| CN112928832A (en) | Double-concentrated winding generator | |
| CN209627079U (en) | Motor, dust collector rolling brush and household electrical appliance with the motor | |
| CN206498309U (en) | A kind of ultra high performance generator | |
| CN204089547U (en) | Direct current machine | |
| CN203896154U (en) | Equal-width claw-pole motor | |
| CN216146202U (en) | High-pressure outer rotor motor for aerator | |
| CN2141618Y (en) | Single-phase brushfree neodymium iron boron ac generator | |
| CN210931166U (en) | Low-voltage DC brushless motor for dust collector rolling brush | |
| CN212726733U (en) | Embedded centrifugal impeller device of gumming of high-speed permanent-magnet machine |
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: 20151202 |