CN1330059C - Universal motor for vacuum cleaner - Google Patents
Universal motor for vacuum cleaner Download PDFInfo
- Publication number
- CN1330059C CN1330059C CNB021207593A CN02120759A CN1330059C CN 1330059 C CN1330059 C CN 1330059C CN B021207593 A CNB021207593 A CN B021207593A CN 02120759 A CN02120759 A CN 02120759A CN 1330059 C CN1330059 C CN 1330059C
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- Prior art keywords
- commutator
- brush
- protective barrier
- stator
- outside
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Abstract
The present invention provides a universal motor for a vacuum cleaner, which comprises stators, rotor windings, rotors, an electric brush and a commutator, wherein the stators are provided with stator windings, the rotor windings are inserted into the stators, the rotors rotate by the electromagnetic force which is generated among the stators, the electric brush is used for supplying current for the rotor windings of the rotors, and the electric brush is mechanically connected with the commutator in a smoothing way. The present invention is characterized in that a shielding device which has a certain distance to the commutator and the electric brush is arranged outside the commutator and the electric brush, and a plurality of air grooves which are parallel to a rotating shaft of the motor are arranged on the shielding device. The present invention has the advantages that the shielding device which uses a protecting cover to shield the outer sides of the commutator and the electric brush can prevent dust and sparks generated by friction of the commutator and the electric brush from dispersing to surrounding components, and then, the service life of the surrounding components can be prolonged; a ventilation groove which is formed on the protecting cover and a shielding wall which is used for preventing the sparks and the dust from spouting outside the protecting cover can keep the cooling efficiency of the universal motor to improve the service life and the reliability of the universal motor.
Description
Technical field
The present invention is relevant dust catcher general-purpose machine, when particularly general-purpose machine is worked, the spark that produces because of commutator and brush friction ignites to circumferential component, or the dust catcher general-purpose machine that prevents to coil windings and the dispersion of periphery product of the dust that produces because of wear of brush.
Background technology
The formation of general vacuum cleaner comprises as shown in Figure 1, having the Body case of cleaner of suction inlet 102 and outlet 104; Suction inlet 102 by above-mentioned shell 110, air and control of dust object are sucked together, its dust suction direction can freely change, and the flexible pipe 106 that utilizes the scalability material to form, be connected with the end of flexible pipe 106, and the built-in dust storage chamber 130 that sucks in dust bag 132 that the control of dust thing is collected, be installed in above-mentioned dust storage chamber 130 back, produce and absorb the control of dust thing in the impeller 16 of the inhalation power effect of dust bag 132 inside, described impeller 16 is connected with rotating shaft 18, rotate described impeller 16, the air that described impeller 16 is sent carries out the general-purpose machine 140 of heat release to it, be connected with the rear portion of general-purpose machine 140, and the air of cooling general-purpose machine 140 be discharged to the formations such as outlet 104 of shell 110 outsides.
This universal motor for vacuum cleaner 140, connect after the external power source, drive the rotating shaft 18 of general-purpose machine 140, when the impeller 16 that is connected above-mentioned rotating shaft 18 rotates by revolving force, produce inhalation power, above-mentioned inhalation power is delivered to flexible pipe 106 inside of shell 110 together with control of dust thing and air, sucks by suction inlet 102, collects 132 li of dust bags.Be drawn into the air of dust storage chamber 130 with the control of dust thing, after by filter 134 foreign matter being filtered, flow into general-purpose machine 140 by impeller 16, this air is flowed through after the general-purpose machine heat release, is discharged to the dust catcher outside by outlet.
The universal motor for vacuum cleaner 140 of prior art, as Fig. 2 diagram, the same electric current that on stator winding 3 and rotor winding 5, flows, thereby the moment of torsion of generation certain orientation, promptly general-purpose machine rotates according to same direction.After external power source is connected, electric current by stator 4, stator winding 3 and brush 8 and 9 flow into brush 8 and commutator 10 that 9 opposite sides smoothly contact on, commutator 10 is with described brush 8 and 9 electric currents that flow into, by after the same direction rectification, flow on the rotor winding 5 of the rotor 6 that is positioned at commutator 10 upper ends.Between the rotor winding 5 of the stator winding 3 of stator 4 and rotor 6, because above-mentioned brush 8 and 9 and the interaction of commutator 10 promptly form certain phase declinate.Therefore, produce along the moment of torsion of direction rotation, make rotor 6 rotations, simultaneously, the rotating shaft 18 that connects on the rotor 6 is rotation simultaneously also.
But, the universal motor for vacuum cleaner 140 of prior art, its commutator 10 is fixed on rotating shaft 18 peripheries at rotor 6 rear portions, and form the mechanical type state of contact with above-mentioned brush 8 and 9, when above-mentioned rotor 146 high speed rotating, and between brush 8 and 9 current conversion takes place, the sparking phenomenon occurs and cause easily on every side that parts ignite.Described brush 8 and 9, in order to make brush 8 and 9 have conductivity and lubrification, so make with copper powders may and blacklead, when it weares and teares gradually, can produce dust, this dust flow into the stator winding 3 of said stator 4, the rotor winding 5 of rotor 6, parts around reaching, cause harmful effect, and reduce the life-span and the reliability of general-purpose machine.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of when preventing general-purpose machine work, and the dust that takes place when spark that takes place between stator and the commutator and the wear of brush vacuum cleaner general-purpose machine that disperses of parts towards periphery is a purpose.
In order to solve the problems of the technologies described above, the technical solution used in the present invention provides a kind of universal motor for vacuum cleaner, comprise stator, insert rotor that the electromagnetic force that produces between rotor winding, utilization and the stator of stator inboard is rotated with stator winding, to the rotor winding of described rotor carry out electric current discrepancy effect two brushes, with the commutator of described brush mechanical type smooth connection, wherein: described commutator and two brushes and the outside, the shield that spacing is arranged with it is set, and described shield is made up of ventilation unit and protective barrier portion.Described ventilation unit is to be positioned at the described commutator outside, and described protective barrier portion is formed on respectively on the front and rear of described two brush correspondences.
Described vent locations is set to the drum of up/down perforation in the shield position of described corresponding commutator outer fix.
The outside left of the corresponding commutator of described protective barrier portion is provided with a plurality of air drains parallel with the electric machine rotational axis direction, and wallboard has a protective barrier in the outside of described each air drain.
Described protective barrier is a groove sidewall paneling opposite with the commutator direction of rotation and that protrude laterally.
The invention has the beneficial effects as follows the shield of screening with guard shield, can prevent commutator and brush because of fricative spark and the peripherad parts dispersion of dust, and then prolong the life-span of parts on every side outside commutator and the brush.The ventilation slot that forms on this guard shield and prevent spark and the dust protective barrier to the outside ejection of guard shield can be kept the cooling effectiveness of general-purpose machine, with advantages such as life-span of improving general-purpose machine and reliabilities.
Description of drawings
Fig. 1 is general structure of dust collector schematic diagram;
Fig. 2 is the profile of prior art general-purpose machine;
Fig. 3 is the profile of dust catcher general-purpose machine of the present invention;
Fig. 4 is that Fig. 3 ' A-A ' is to profile.
Among the figure:
2, general-purpose machine hood 3, stator winding
4, stator 5, rotor winding
6, rotor 8,9, brush
10, commutator 12, shield
16, impeller 18, rotating shaft
20, ventilation unit 22, air drain
24, protective barrier I, electric current
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:
Vacuum cleaner of the present invention with general-purpose machine comprise stator 4, insert rotor 6 that the electromagnetic force that produces between rotor winding 5, utilization and the stator of stator 4 inboards is rotated with stator winding, to the rotor winding 5 of described rotor 6 carry out electric current discrepancy effect brush 8 and 9, with the commutator 10 of described brush mechanical type smooth connection, the outside in described commutator 10 and brush 8 and 9, be provided with the shield 12 that spacing is arranged with it, the top of shield 12 is connected with motor hood 2.Described shield 12 is similar with 9 lateral surface shapes to described commutator 10 and brush 8 and the guard shield of spacing is arranged.Corresponding commutator 10 outside lefts of described guard shield are provided with a plurality of air drains 22 parallel with electric machine rotational axis 18 directions, and wallboard has a protective barrier in the outside of described each air drain 22.Described protective barrier 24 is groove sidewall panelings opposite with commutator 10 direction of rotation and that protrude laterally.
As shown in Figure 3, it is inboard and introduce external power sources to be installed in general-purpose machine hood 2, and has the stator 4 of stator winding 3, is inserted in the inboard of described stator 4, and has rotor winding 5, the rotor 6 that utilizes the electromagnetic force that produces between the stator to be rotated; The rotor winding 5 of described rotor 6 is carried out the brush 8 and 9 of electric current discrepancy effect, with the commutator 10 that after described brush 8 and 9 mechanical type smooth connections and the rectifier power source electric current is communicated to rotor winding 5, the outside in described commutator 10 and brush 8 and 9, be provided with prevent because of the spark that friction produced of described commutator 10 and brush 8 and 9 to around the formations such as shield 12 of disperseing.
Inner peripheral surface by described rotor 6, the bearing 14 rotatable supports of general-purpose machine hood 2 both sides are installed, and an end installs and fixes the rotating shaft 18 of impeller 16, and outer peripheral face equidistantly forms most groove 6a to circumferencial direction, on described groove 6a, described rotor winding 5 is installed.Described brush 8 and 9 is for conductivity and lubrification, utilize copper powders may and blacklead to form, and respectively be installed in the left and right sides of commutator 10, it supports to form by the brush holder 7 that is fixed in described general-purpose machine hood 2 outsides, be inserted in the spring 17 of brush holder 7 inside, just have the elastic force that maintenance contacts always closely with commutator 10.
Described commutator 10 is fixed on the rotating shaft elliptic end outside at described rotor 6 rear portions, during general-purpose machine work, with described rotating shaft 18 high speed rotating, produces frictional heat between described brush 8 and 9, because of frictional heat is worn and torn, and produces powder.As shown in Figure 4, described shield 12, be installed in a described commutator 10 and a left side at a certain distance, right brush 8 and 9 the place ahead F and rear portion B side, with a described commutator 10 and a left side, right brush 8 is similar with 9 lateral surface shapes, forms the protective barrier film 11 and 13 of the place ahead F and rear portion B, and then constitutes shield 12.When general-purpose machine moves, the dust that spark that friction causes between described commutator 10 and brush 8 and 9 and brush 8 and 9 wearing and tearing cause, but by guard shield 12 just its outside dispersions of protective barrier.
Owing to carried out spark and dust waits effectively preventing of other general-purpose machine component damage to stator winding 3 and rotor winding 5, thereby improved the life-span and the reliability of general-purpose machine.
In addition, according to general-purpose machine of the present invention, the effect of the impeller 16 by being installed in described rotating shaft 18 1 ends, make air A flow into general-purpose machine hood 2 inside, reach the cooling purpose of commutator 10 and heaters such as brush 8 and 9, simultaneously, in order to prevent because of shield 12, can't cool off the frictional heat between commutator 10 and brush 8 and 9, therefore, in shield 12 arranged outside the ventilation unit 20 of ventilation is arranged, form the purpose that air A flows to reach on the commutator 10 of shield 12 inside and brush 8 and 9.Described ventilation unit 20, be positioned at shield 12 positions of described corresponding commutator 10 outer fixs, form the cylindric of up/down perforation, on the cylinder type position of described shield 12, parallel formation long air duct 22 with the direction of principal axis of rotating shaft 18, air drain 22 have with circumferencial direction and keep equally spaced majority to form.
For preventing center of circle power because of commutator, make spark and the dust air drain 22 by shield 12 to guard shield 12 outer jet, the air drain 22 wallboards outside that forms on shield 12 forms protective barrier 24.Because the current commutates effect of commutator 10 because of contact with 9 with brush 8, and make that described rotor 6 is total to keep rotation counterclockwise, described rotating shaft 18 and commutator 10 be because of forming one, thus also rotate to counter clockwise direction, therefore.During described protective barrier 24 forms, the outside wallboard of each air drain 22 of the two side wall panels of each air drain 22 of shield 12 has a protective barrier, all,, form consistent clockwise direction and outwards protrude from the wallboard side end according to the counter clockwise direction position of commutator 10 direction of rotation.As shown in Figure 4, air drain 22 and protective barrier 24 should be on the place aheads and rear portion protective barrier 11,13 of shield 12, and respectively form 5.
As the present invention of above-mentioned explanation, its operation principle is as follows:
At first, connect external power source, electric current flow into a side brush 8 by the stator winding 3 of stator 4, after electric current and commutator 10 rectifications that a side brush contacts, flow into rotor winding 5.Electric current with rotor winding 5 flows flows out to opposite side brush 9 by commutator 10 again, and the stator winding 3 by stator 4 opposite sides that are connected with side brush 9 flow into the outside.
The outside connection after the power supply, the electric current worker is through stator winding 3 → one side brushes 8 → commutator 10 → rotor winding 5 → commutator 10 → opposite side brush 9 → stator winding 3.
Because of flowing of electric current, between described stator 4 and rotor 6, produce electromagnetic force, rotor 6 is according to left hand rule, to rotation counterclockwise, simultaneously, during rotating shaft 18 rotations, current conversion at a high speed takes place in drives impeller 16 between commutator 10 and brush 8 and 9, produce frictional heat.
Because above-mentioned frictional heat, described shield 12 just the spark that produces between commutator 10 and brush 8 and 9 and dust are prevented to guard shield 12 outer scattereds and the protective barrier protection parts around also having protected simultaneously.
Applying revolving force in impeller 16 rotations of described rotating shaft 18, air is sent to general-purpose machine hood 2 inside that are positioned at rear positions, promptly, can cool off the frictional heat that reaches generation between commutator 10 and the brush 8,9 between stator 4 and the rotor 6 by the air of force feed.
Cooling for above-mentioned commutator 10 and brush 8 and 9, flow into the air of described shield 12 inside, ventilate by the air drain on the shield 12 22, at this moment, center of circle power because of commutator 10, by shield 12 and air drain 22, the dust that disperses by protective barrier 24 protective barriers, is prevented to guard shield 12 outer scattereds.
Claims (4)
1, a kind of universal motor for vacuum cleaner, comprise stator (4), insert the inboard rotor winding (5) of stator (4), utilize rotor (6) that the electromagnetic force that produces between the stator is rotated with stator winding, to the rotor winding (5) of described rotor (6) carry out electric current discrepancy effect brush (8 and 9), with the commutator (10) of described brush mechanical type smooth connection, it is characterized in that:
The outside at described commutator (10) and brush (8 and 9), the shield (12) that spacing is arranged with it is set, described shield (12) is made up of ventilation unit (20) and protective barrier portion (11,13), described ventilation unit (20) is to be positioned at described commutator (10) outside, and described protective barrier portion (11,13) is respectively formed on described brush (8 and 9) the corresponding front portion (F) and rear portion (B).
2, universal motor for vacuum cleaner according to claim 1 is characterized in that: described ventilation unit (20) is connected with the cylinder that up/down perforation is formed and formed to protective barrier (24) by a plurality of air drains (22) and the outside thereof.
3, universal motor for vacuum cleaner according to claim 1, it is characterized in that: described protective barrier portion's (11,13) corresponding commutators (10) outside left is provided with a plurality of air drains (22) parallel with electric machine rotational axis (18) direction, at the outside wallboard of described each air drain (22) protective barrier (24) is arranged.
4, according to claim 2 or 3 described universal motor for vacuum cleaner, it is characterized in that: described protective barrier (24) is a groove sidewall paneling opposite with commutator (10) direction of rotation and that protrude laterally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021207593A CN1330059C (en) | 2002-05-31 | 2002-05-31 | Universal motor for vacuum cleaner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021207593A CN1330059C (en) | 2002-05-31 | 2002-05-31 | Universal motor for vacuum cleaner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1462093A CN1462093A (en) | 2003-12-17 |
| CN1330059C true CN1330059C (en) | 2007-08-01 |
Family
ID=29742547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021207593A Expired - Fee Related CN1330059C (en) | 2002-05-31 | 2002-05-31 | Universal motor for vacuum cleaner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1330059C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100424943C (en) * | 2004-05-27 | 2008-10-08 | 乐金电子(天津)电器有限公司 | Commutator rectifier insulating device of motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1195221A (en) * | 1997-02-07 | 1998-10-07 | 德昌电机股份有限公司 | Electric motor |
| US6100617A (en) * | 1998-10-01 | 2000-08-08 | Johnson Electric Automotive, Inc. | Electrical insulation barrier for an electric motor |
| CN1340886A (en) * | 2000-08-24 | 2002-03-20 | 希尔蒂股份公司 | Universal motor for hand-tool |
-
2002
- 2002-05-31 CN CNB021207593A patent/CN1330059C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1195221A (en) * | 1997-02-07 | 1998-10-07 | 德昌电机股份有限公司 | Electric motor |
| US5952754A (en) * | 1997-02-07 | 1999-09-14 | Johnson Electric S.A. | Electric motor |
| US6100617A (en) * | 1998-10-01 | 2000-08-08 | Johnson Electric Automotive, Inc. | Electrical insulation barrier for an electric motor |
| CN1340886A (en) * | 2000-08-24 | 2002-03-20 | 希尔蒂股份公司 | Universal motor for hand-tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1462093A (en) | 2003-12-17 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |