CN107104535A - Low pressure quadrupole three-stage dc motor - Google Patents
Low pressure quadrupole three-stage dc motor Download PDFInfo
- Publication number
- CN107104535A CN107104535A CN201710357232.6A CN201710357232A CN107104535A CN 107104535 A CN107104535 A CN 107104535A CN 201710357232 A CN201710357232 A CN 201710357232A CN 107104535 A CN107104535 A CN 107104535A
- Authority
- CN
- China
- Prior art keywords
- brush holder
- motor
- section shell
- brush
- section
- 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.)
- Pending
Links
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000003466 welding Methods 0.000 claims abstract description 12
- 229910052786 argon Inorganic materials 0.000 claims abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 41
- 229910052799 carbon Inorganic materials 0.000 claims description 41
- 241000209094 Oryza Species 0.000 claims description 7
- 235000007164 Oryza sativa Nutrition 0.000 claims description 7
- 235000009566 rice Nutrition 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 210000003734 kidney Anatomy 0.000 claims description 4
- 239000002184 metal Substances 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008450 motivation Effects 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/14—Means for supporting or protecting brushes or brush holders
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc Machiner (AREA)
Abstract
A kind of low pressure quadrupole three-stage dc motor, the motor is made up of the bearing section being coaxially sequentially connected, casing section and brush holder section, three stage structure replaces traditional casing to rivet with argon arc welding, convenient adjustment motor overall length, only need to adjust casing length, and brush holder section and bearing section are without re-molding.Also simple rivet between brush holder and metal shell, it is convenient to install.Bearing section uses side air inlet, not only strengthens the mechanical strength of mounting surface, and add air inflow.The air-flow into motor will not be blocked by the installing plate of client so that the temperature rise of motor is improved.Four-pole motor is designed, in the case of offer and the equal moment of torsion of two stage electric motor, and the length of rotor coil will shorten, so that motor overall length also accordingly shortens, reduce customer set up volume.
Description
Technical field
The present invention relates to a kind of electric tool low pressure quadrupole three-stage dc motor.
Background technology
Nowadays, electric tool dc motor is to high efficiency, and compact direction is developed.The application of four-pole motor, makes
Obtain in the case of same torque, the contraction in length of rotor coil, motor overall length also accordingly shortens.
However, such motor is generally designed using split-type structural in industry, the difficulty of client's installation certainly will be added
And cost；On the other hand, conventional monolithic motor, lacks flexibility.As long as fuselage length is different, it is necessary to turn back on shell
Mould, considerably increases the development cost of new product.
Conventional monolithic motor is riveted by cutter on chassis end roll side or directly, and casing and iron covering are easily deformed；And
The laser welding technology newly used in industry, efficiency is too low.
Reduction electric tool is always a stubborn problem with the temperature rise of dc motor.If in customer set up cavity
Duct design is bad or motor is installed on the client device, and installing plate blocks the air-flow into motor, and motor is in fortune
Temperature rise in turning will be very high.
The content of the invention
The present invention provides a kind of electric tool low pressure quadrupole three-stage dc motor, to realize following purpose：
1）On the premise of design requirement moment of torsion is ensured, shorten motor overall length, reduce the volume of motor body；
2）With reference to split type and integral motor advantage；
3）Improve the quality and efficiency of casing welding；
4）Improve motor heat dissipation performance, reduce temperature rise.
To reach above-mentioned purpose, the technical solution adopted by the present invention is：A kind of low pressure quadrupole three-stage dc motor, bag
Fuselage cover, magnet, rotor, carbon brush component are included, provided with four blocks of magnet being uniformly distributed along the circumference, the two ends of rotor in fuselage cover
Axle is rotatably supported in the axle center of fuselage cover, commutator and carbon brush component is housed in the rear end of rotor, it is characterised in that the electricity
Motivation is made up of the bearing section being coaxially sequentially connected, casing section and brush holder section, wherein：
Described bearing section is the bearing section shell with drive end bearing bracket, and multiple air inlets are evenly equipped with along the periphery of the bearing section shell
Window；
Described casing section includes intermediate casing, and described rotor is provided with the intermediate casing；
Described brush holder section includes brush holder section shell, in brush holder section shell built with described commutator and carbon brush component；
The rear end face of brush holder section shell is provided with multiple pig kidney shaped air intake windows being uniformly distributed along the circumference, and is provided with multiple in the outer peripheral face of the shell
The rear end outlet window being uniformly distributed along the circumference；
Described intermediate casing two ends cooperate to cover with the abutting end of bearing section shell and brush holder section shell respectively merges welding,
The leading portion and back segment of fuselage cover described in constituting, the bearing section shell and brush holder section shell respectively as fuselage cover.
Described carbon brush component includes carbon brush bucket, brush holder, torsion spring and carbon brush, and be uniformly distributed along the circumference four footpaths on front side of brush holder
To the carbon brush bucket of setting, in each carbon brush bucket built with a carbon brush, respectively it is used in the outer end of each carbon brush equipped with one to carbon brush
Apply the torsion spring to rotor axis pressure, brush holder is by being located at button point riveting of the brush holder section shell close to rear end outer peripheral face both sides
Button is fixed；Brush holder step position is provided with the rear side of the brush holder.
When described bearing section, casing section and brush holder section structure is assembled, on bearing section shell and brush holder section shell both sides inwall
Positioning rice point alignment intermediate casing two ends breach, it is ensured that the angle of carbon brush and magnet is in the range of design；In middle machine
Fabrication hole is left on shell, determined for magnet pasting or when magnetizing magnetic to orientation angle.
The wall thickness 3.0mm of described intermediate casing, undergauge step is provided with the two ends of the intermediate casing, and the undergauge step is matched somebody with somebody
In be inserted in the bearing section shell and brush holder section shell abutting end with closing so that the external diameter of three sections of shells is identical；Using argon arc welding
It is welded and fixed, eight weld locations are in the positioning rice point both sides of bearing section shell and brush holder section shell.
The solution have the advantages that：Using quadrupole three stage structure, shorten motor overall length；With the higher argon arc of efficiency
Welding technique allows three sections of fuselages to be connected, and fuselage is not allowed yielding；Formed after one, facilitate client to assemble；Brush holder section uses top
End face air inlet, and bearing section uses side air inlet, while mounting surface mechanical strength is improved, increases big air inflow, reduction electricity
The temperature rise of motivation.
Brief description of the drawings
Fig. 1 is overall schematic perspective view of the invention；
Fig. 2 is the explosive view of the present invention；
Fig. 3 is brush holder section general assembly stereogram；
Fig. 4 is brush holder assembly figure；
Fig. 5 is brush holder section shell figure；
Fig. 6 is casing assembly figure；
Fig. 7 is Ji Ke Transverse profiles；
Fig. 8 is bearing section stereogram；
Fig. 9 is bearing section mounting surface top view；
Figure 10 is the solder joint distribution schematic diagram of side of the present invention.
Description of reference numerals：
1 brush holder section；2 casings section；3 bearing sections；4 rotors；5 carbon brush components；6 button points；7 rear end outlet windows；8 bronze medal carbon sets；9 brush holders；
91 brush holder step positions；10 torsion springs；11 carbon brush；12 pig kidney shaped air intake windows；13 brush holders section shell；14 magnet；15 casing fabrication holes；16
Intermediate casing；17 casing breach；18 positioning rice points；19（Bearing section）Side position air intake window；20 pads；Fan blade in 21 rotors, 22
Commutator.
Embodiment
Referring to Fig. 1 and Fig. 2, a kind of low pressure quadrupole three-stage dc motor of the invention, including fuselage cover（By middle machine
Shell 16, hold section shell and brush holder section shell 13 cooperate set merging be welded to form）, magnet 14, rotor 4, carbon brush component 5, should
Motor is made up of the bearing section 1 being coaxially sequentially connected, casing section 2 and brush holder section 3.
As shown in Figure 3-Figure 5, there are two button points 6 brush holder section shell 13 both sides, for the rivet of carbon brush component 5 is fixed.Institute
The carbon brush component 5 stated includes carbon brush bucket 8, brush holder 9, torsion spring 10 and carbon brush 11, and be uniformly distributed along the circumference four radial directions in the front side of brush holder 9
The carbon brush bucket 8 of setting, in each carbon brush bucket 8 built with a carbon brush 11, is respectively used for pair in the outer end of each carbon brush 11 equipped with one
Carbon brush 11 applies the torsion spring 10 to rotor axis pressure, and brush holder 9 is by being located at brush holder section shell 13 close to rear end outer peripheral face
The button point rivet 6 of both sides is fixed；Brush holder step position 91 is provided with the rear side of the brush holder 9.Four pieces of carbon brush 11 are circumferentially equal by 90 °
Cloth, and perpendicular to magnet 14.Torsion spring 10 ensures carbon brush 11 in elastic force of the electrical machinery life later stage by relative constancy so that motor
Performance is more stable.
Especially, the rear side of brush holder 9 devises brush holder step position 91, it is ensured that the metal live part of carbon brush component 5 and brush
Frame section shell 13 retains enough creep age distances between rear end.
The brush holder section end face of shell 13 has four pig kidney shaped air intake windows 12（Referring to Fig. 5）, mutually match with the outlet window 7 of side four
Close.Air intake window 12 and outlet window 7 and interior fan blade 21 and eight side air intake windows 19 of bearing section 1 on rotor 4, form a gas
Air channel is flowed, air-cooled, the temperature rise of reduction motor is carried out to motor internal.The air intake window 19 of brush holder section shell 13 is opened in the side of shell
Face, the mechanical strength without on mounting surface, enhancing mounting surface.
Show that the magnetic field of motor of the present invention is made up of four pieces 90 ° uniform magnet 14 in Fig. 6 and Fig. 7, magnetic is to for N-S-
N-S.The relative angle of carbon brush 11 and magnet 14, by the positioning rice point 18 and the breach 17 of intermediate casing 16 on brush holder end housing 13
To ensure.The wall thickness of intermediate casing 16 is 3.0mm, also will not leakage field without protecting magnetosphere.Fabrication hole 15 is left on intermediate casing 16,
Facilitate magnet 14 paste or determined when magnetizing magnetic to orientation angle（Referring to Fig. 3-Fig. 9）.
As shown in Figure 10, three-stage fuselage of the invention is connected by 8 argon arc welding pads 20, the position of pad 20
In positioning rice point 18 both sides, the left and right sides is welded, completed in four times simultaneously so that the efficiency of argon arc welding welding is than Laser Welding significantly
Improve, fuselage is not allowed yielding yet.
Three stage structure of the present invention replaces traditional casing to rivet with argon arc welding, convenient adjustment motor overall length, only needs
Casing length is adjusted, and brush holder section and bearing section are without re-molding.Also simple rivet between brush holder and metal shell, it is convenient
Install.
Bearing section uses side air inlet, not only strengthens the mechanical strength of mounting surface, and add air inflow.Will not be by
The installing plate of client blocks the air-flow into motor so that the temperature rise of motor is improved.
Four-pole motor is designed, in the case of offer and the equal moment of torsion of two stage electric motor, and the length of rotor coil will
Shorten, so that motor overall length also accordingly shortens, reduce customer set up volume.
In addition, the present invention is not limited only to low pressure quadrupole three-stage dc motor, high-low pressure hybrid power could be applicable to
Split type dc motor（It can refer to utility model patent, Patent No.：ZL2013 2 0574439.6）With high pressure or low pressure
DC Brushless Motor.
Claims (4)
1. a kind of low pressure quadrupole three-stage dc motor, including fuselage cover, magnet, rotor, carbon brush component, in fuselage cover
Four blocks of magnet being uniformly distributed along the circumference inside are provided with, the two end axles of rotor are rotatably supported in the axle center of fuselage cover, in the rear end of rotor
Equipped with commutator and carbon brush component, it is characterised in that the motor is by the bearing section being coaxially sequentially connected, casing section and brush holder
Duan Zucheng, wherein：
Described bearing section is the bearing section shell with drive end bearing bracket, and multiple air inlets are evenly equipped with along the periphery of the bearing section shell
Window；
Described casing section includes intermediate casing, and described rotor is provided with the intermediate casing；
Described brush holder section includes brush holder section shell, in brush holder section shell built with described commutator and carbon brush component；
The rear end face of brush holder section shell is provided with multiple pig kidney shaped air intake windows being uniformly distributed along the circumference, and is provided with multiple in the outer peripheral face of the shell
The rear end outlet window being uniformly distributed along the circumference；
Described intermediate casing two ends cooperate to cover with the abutting end of bearing section shell and brush holder section shell respectively merges welding,
The leading portion and back segment of fuselage cover described in constituting, the bearing section shell and brush holder section shell respectively as fuselage cover.
2. low pressure quadrupole three-stage dc motor according to claim 1, it is characterised in that described carbon brush component bag
Carbon brush bucket, brush holder, torsion spring and carbon brush are included, be uniformly distributed along the circumference four carbon brush being radially arranged buckets on front side of brush holder, in each carbon
Brush bucket is respectively used to apply carbon brush the torsion to rotor axis pressure in the outer end of each carbon brush built with a carbon brush equipped with one
Spring, brush holder is fixed by being located at button point rivet of the brush holder section shell close to rear end outer peripheral face both sides；In the rear side of the brush holder
Provided with brush holder step position.
3. low pressure quadrupole three-stage dc motor according to claim 1, it is characterised in that described
When bearing section, casing section and brush holder section structure assembling, the positioning rice point on bearing section shell and brush holder section shell both sides inwall
It is directed at the breach at intermediate casing two ends, it is ensured that the angle of carbon brush and magnet is in the range of design；Work is left on intermediate casing
Skill hole, determined for magnet pasting or when magnetizing magnetic to orientation angle.
4. low pressure quadrupole three-stage dc motor according to claim 1, it is characterised in that described
The wall thickness 3.0mm of intermediate casing, undergauge step is provided with the two ends of the intermediate casing, and the undergauge step is ordinatedly inserted in this
In the abutting end of bearing section shell and brush holder section shell so that the external diameter of three sections of shells is identical；It is welded and fixed using argon arc welding, eight
Individual weld locations are in the positioning rice point both sides of bearing section shell and brush holder section shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710357232.6A CN107104535A (en) | 2017-05-19 | 2017-05-19 | Low pressure quadrupole three-stage dc motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710357232.6A CN107104535A (en) | 2017-05-19 | 2017-05-19 | Low pressure quadrupole three-stage dc motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107104535A true CN107104535A (en) | 2017-08-29 |
Family
ID=59670199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710357232.6A Pending CN107104535A (en) | 2017-05-19 | 2017-05-19 | Low pressure quadrupole three-stage dc motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107104535A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101110539A (en) * | 2006-07-19 | 2008-01-23 | 天蝎星精密工业（香港）有限公司 | Ventilated motor |
| US20100183460A1 (en) * | 2009-01-19 | 2010-07-22 | Rui Feng Qin | Electric motor |
| CN201813258U (en) * | 2010-10-01 | 2011-04-27 | 中山大洋电机制造有限公司 | Cooling structure for electric motor |
| CN203466705U (en) * | 2013-09-17 | 2014-03-05 | 慈溪市乐士电机电器有限公司 | High and low voltage hybrid power split-type direct-current permanent magnet motor |
| US20140175914A1 (en) * | 2012-12-25 | 2014-06-26 | Zhongshan Broad-Ocean Motor Co., Ltd. | Motor |
| CN104079119A (en) * | 2013-03-26 | 2014-10-01 | 德昌电机(深圳)有限公司 | Motor assembly and household appliance comprising motor assembly |
| US20150303765A1 (en) * | 2013-03-06 | 2015-10-22 | Mitsubishi Electric Corporation | Rotating electrical machine |
| CN207010405U (en) * | 2017-05-19 | 2018-02-13 | 钱士祥 | Low pressure quadrupole three-stage dc motor |
-
2017
- 2017-05-19 CN CN201710357232.6A patent/CN107104535A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101110539A (en) * | 2006-07-19 | 2008-01-23 | 天蝎星精密工业（香港）有限公司 | Ventilated motor |
| US20100183460A1 (en) * | 2009-01-19 | 2010-07-22 | Rui Feng Qin | Electric motor |
| CN201813258U (en) * | 2010-10-01 | 2011-04-27 | 中山大洋电机制造有限公司 | Cooling structure for electric motor |
| US20140175914A1 (en) * | 2012-12-25 | 2014-06-26 | Zhongshan Broad-Ocean Motor Co., Ltd. | Motor |
| US20150303765A1 (en) * | 2013-03-06 | 2015-10-22 | Mitsubishi Electric Corporation | Rotating electrical machine |
| CN104079119A (en) * | 2013-03-26 | 2014-10-01 | 德昌电机(深圳)有限公司 | Motor assembly and household appliance comprising motor assembly |
| CN203466705U (en) * | 2013-09-17 | 2014-03-05 | 慈溪市乐士电机电器有限公司 | High and low voltage hybrid power split-type direct-current permanent magnet motor |
| CN207010405U (en) * | 2017-05-19 | 2018-02-13 | 钱士祥 | Low pressure quadrupole three-stage dc motor |
Non-Patent Citations (2)
| Title |
|---|
| 吴荣华: "热泵供热供冷工程", 30 June 2016, 中国海洋大学出版社, pages: 36 - 38 * |
| 菲舍尔·理查德: "汽车技图表手册", 31 July 2012, 湖南科学技术出版社, pages: 44 * |
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