CN204992954U - Double power adaptation direct current motor - Google Patents
Double power adaptation direct current motor Download PDFInfo
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- CN204992954U CN204992954U CN201520554288.7U CN201520554288U CN204992954U CN 204992954 U CN204992954 U CN 204992954U CN 201520554288 U CN201520554288 U CN 201520554288U CN 204992954 U CN204992954 U CN 204992954U
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- motor
- commutator
- brush
- conducting strip
- contactor
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- 230000006978 adaptation Effects 0.000 title claims abstract description 12
- 238000004804 winding Methods 0.000 claims abstract description 32
- 239000012212 insulator Substances 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Motor Or Generator Current Collectors (AREA)
Abstract
The utility model discloses a double power adaptation direct current motor, including motor front end housing, first brush, second brush, commutator contactor, commutator adapter, rotor core, brush seat, rotor winding, motor shell, motor spindle and motor rear end cap, the commutator contactor has first commutator segment and second commutator segment, the commutator adapter has first conducting strip and second conducting strip, double power's application has prolonged the life of motor, commutator contactor and brush can be installed at motor shell outsidely, with end cap seal before the motor, need not dismantle motor shell like this when commutator contactor and brush wear and just can change, and the maintenance of motor is more convenient, reduce the cost. The form that the brush freely slided and then contacted with the commutator segment along motor axial direction for the motor can present long and thin type structure in appearance, can install in long and thin type space.
Description
Technical field
The utility model relates to permanent magnet DC motor field, is specially a kind of two power adaptation direct current machine.
Background technology
Current permanent magnet DC motor, due to the unicity of its rotor core and commutator structure, when switching on power, single brush drives single commutator frictional rotation, by current delivery to rotor coil, and brush coil place in circuit number non-adjustable, make same electrical pressure can only realize single power running.This needs the machinery equipment of two or more power inapplicable for some, such as electric automobile, requires height when needing the power ratio of motor to run on smooth road surface during climbing to power of motor.If single power motor, be in overload conditions for a long time, be easy to motor damage.If use powerful motor all the time when automobile travels in flat road surface, power surplus will be caused.Cause motor not provide the waste of power demand or power, thus damage is to a certain degree caused to motor.And the requirement of electric automobile to the space in engine head is higher, therefore, according to the motor that the spatial choice draw ratio in engine head is suitable, tool has very important significance.
Current permanent magnet direct current motor, commutator is all arranged on casing internal, and commutator in running, once break down, needs to dismantle whole motor, operates very difficult, also can cause the infringement of unrepairable to motor simultaneously.
Utility model content
For the deficiencies in the prior art, the technical problem that the utility model quasi-solution is determined is, a kind of two power adaptation direct current machine is provided, comprises motor front end cover, the first brush, the second brush, commutator contactor, commutator adapter, rotor core, brushgear housing, rotor windings, motor case, electric machine main shaft and back end cover for motor; Described commutator contactor has the first commutator segment and the second commutator segment; Described commutator adapter has the first conducting strip and the second conducting strip; The application of two power extends the useful life of motor; Commutator contactor and brush can be arranged on motor case outside, and with motor front end cover sealing, need not dismantle motor case when commutator contactor and wear of brush like this and just can change, the maintenance of motor is convenient, reduces cost.The form that brush is free to slide along motor axial direction and then contacts with commutator segment, makes motor can present slender structure in appearance, can be arranged in slender type space.
The technical scheme that the utility model solve the technical problem is, a kind of two power adaptation direct current machine is provided, it is characterized in that described motor comprises motor front end cover, the first brush, the second brush, commutator contactor, commutator adapter, rotor core, brushgear housing, rotor windings, motor case, electric machine main shaft and back end cover for motor; Described commutator contactor has the first commutator segment and the second commutator segment; Described commutator adapter has the first conducting strip and the second conducting strip;
Described motor front end cover and back end cover for motor are connected on motor case; Described commutator contactor and commutator adapter are arranged on electric machine main shaft; Described commutator contactor is connected with rotor windings with cable by commutator adapter; Described commutator adapter is connected with rotor windings by cable; Described rotor windings is embedded in rotor core, and described rotor core is arranged on electric machine main shaft; The two ends of described electric machine main shaft are arranged on motor case respectively and motor rear end covers; Described brushgear housing is fixed on motor front end cover; Described first brush is arranged in brushgear housing in the mode be free to slide along motor axial direction, thus contacts with the second commutator segment or be separated; Described second brush is arranged in brushgear housing in the mode be free to slide along motor axial direction, thus contacts with the first commutator segment or be separated; Insulator is had in the middle of described first commutator segment and the second commutator segment; Insulator is had in the middle of described first conducting strip and the second conducting strip; Conducting between described first commutator segment and the first conducting strip, and insulate between the second conducting strip; Conducting between described second commutator segment and the second conducting strip, and insulate between the first conducting strip.
Compared with prior art, the utility model beneficial effect is:
(1) the utility model uses single rotor core, coiling two groups of different parameters rotor windings with two enter the commutator of function be connected respectively, use two groups of brush structures, realize an electrical motors to two kinds of different power, the application of two power extends the useful life of motor.
(2) this motor not only can realize two power, owing to employing commutator contactor and commutator adapter, so the conventional components such as commutator adapter are arranged on motor case inside, and commutator contactor and brush can be arranged on motor case outside, seal with motor front end cover, need not dismantle motor case when commutator contactor and wear of brush so just can change, the maintenance of motor is convenient, reduces cost.
(3) the brush form that is free to slide along motor axial direction and then contacts with commutator segment, makes motor can present slender structure in appearance, can be arranged in slender type space.
Accompanying drawing explanation
Fig. 1 is the whole interior structural representation of the two a kind of embodiment of power adaptation direct current machine of the utility model; (in figure: 1, motor front end cover; 2, the first brush; 3, the second brush; 4, commutator contactor; 5, commutator adapter; 6, rotor core; 7, brushgear housing; 8, rotor windings; 9, motor case; 10, electric machine main shaft; 11, back end cover for motor)
Fig. 2 is the commutator contactor construction schematic diagram of the two a kind of embodiment of power adaptation direct current machine of the utility model; (in figure: 41, the first commutator segment; 42, the second commutator segment)
Fig. 3 is the commutator adaptor structure schematic diagram of the two a kind of embodiment of power adaptation direct current machine of the utility model; (in figure: 51, the first conducting strip; 52, the second conducting strip)
Embodiment
Carry out clear, complete description by the technical scheme in the utility model embodiment below, obviously, described embodiment is a part of embodiment of the present utility model, instead of whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of the utility model protection.
The utility model provides a kind of two power adaptation direct current machine (see Fig. 1-3, be called for short motor), comprise motor front end cover 1, first brush 2, second brush 3, commutator contactor 4, commutator adapter 5, rotor core 6, brushgear housing 7, rotor windings 8, motor case 9, electric machine main shaft 10 and back end cover for motor 11; Described commutator contactor 4 has the first commutator segment 41 and the second commutator segment 42; Described commutator adapter 5 has the first conducting strip 51 and the second conducting strip 52;
Described motor front end cover 1 and back end cover for motor 11 are connected on motor case 9; Described commutator contactor 4 is arranged on electric machine main shaft 10 with commutator adapter 5; Described commutator contactor 4 is connected with rotor windings 8 with cable by commutator adapter 5; Described commutator adapter 5 is connected with rotor windings 8 by cable; Described rotor windings 8 is embedded in rotor core 6, and described rotor core 6 is arranged on electric machine main shaft 10; The two ends of described electric machine main shaft 10 are arranged on motor case 9 and back end cover for motor 11 respectively; Described brushgear housing 7 is fixed on motor front end cover 1; Described first brush 2 is arranged in brushgear housing 7, can be free to slide along motor axial direction, thus contacts with the second commutator segment 42 or be separated; Described second brush 3 is arranged in brushgear housing 7, can be free to slide along motor axial direction, thus contacts with the first commutator segment 41 or be separated; The form that this brush is free to slide along motor axial direction and then contacts with commutator segment, makes motor can present slender structure in appearance, and the draw ratio of motor is 1.7-2.1:1; Insulator is had in the middle of described first commutator segment 41 and the second commutator segment 42; Insulator is had in the middle of described first conducting strip 51 and the second conducting strip 52; Described first conducting strip 51 is whole by cable access rotor windings 8, and described second conducting strip 52 is by the part of cable rotor windings 8; Conducting between described first commutator segment 41 and the first conducting strip 51, and insulate between the second conducting strip 52; Conducting between described second commutator segment 42 and the second conducting strip 52, and insulate between the first conducting strip 51.
When the first brush 2 contacts with the second commutator segment 42, when the second brush 3 and the first commutator segment 41 are separated, now motor is in the first operating state.Electric current arrives rotor windings 8 after flowing through the first brush 2, second commutator segment 42, second conducting strip 52, and rotor windings 8 part access this moment, motor exports the first power.When the second brush 3 contacts with the first commutator segment 41, when the first brush 2 and the second commutator segment 42 are separated, now motor is in the second operating state.Electric current arrives rotor windings 8 after flowing through the second brush 3, first commutator segment 41, first conducting strip 51, and rotor winding 8 all accesses this moment, and motor exports the second power.Motor just can be made mutually to transform between high-output power and low power output by the state of control brush, so just achieve two power of motor.
For brush and commutator contactor 4, due to long-term friction, it easily weares and teares, and needs to change.For existing commercially available motor, need when changing commutator to dismantle motor, but the unloading process of motor is complicated, motor easily damages, and makes motor cannot continue to use.For this motor, only motor front end cover 1 need be taken apart when changing commutator contactor 4, just can when not destroying motor body structure, by commutator contactor 4 is separated with commutator adapter 5, thus the replacing carried out commutator contactor 4, brush is also convenient to change simultaneously.
Operation principle of the present utility model and workflow are: when motor be in need high power work time, if motor application is when automobile is climbed, the first brush 2 and the second commutator segment 42 are separated, and simultaneously the second brush 3 contacts with the first commutator segment 41.Now, be conducting between the second brush 3, first commutator segment 41, first conducting strip 51, after electric current enters motor from outside, after flowing through the second brush 3, first commutator segment 41, first conducting strip 51, arrive rotor windings.Now rotor windings all accesses, there is more winding, therefore under the effect of electromagnetic field, under same voltage, whole rotor windings produces larger electromagnetic torque and larger induced electromotive force, along with motor speed raises, induced electromotive force increases to input voltage rapidly, and now motor has comparatively hard mechanical property and can export comparatively high pulling torque.
When motor be in need smaller power to work time, if motor application is when the automobile normal running, the second brush 3 and the first commutator segment 41 are separated, and the first brush 2 contacts with the second commutator segment 42 simultaneously.Now, be conducting between the first brush 2, second commutator segment 42, second conducting strip 52, after electric current enters motor from outside, flow through the first brush 2, second commutator segment 42, second conducting strip 52 and arrive rotor windings.Now rotor windings part access, has less winding, and therefore under the effect of electromagnetic field, under same voltage, whole rotor windings produces less electromagnetic torque and less induced electromotive force, and now motor exports less moment of torsion.
When the second brush 3 and the first commutator segment 41 are separated by electric machine control system, when first brush 2 contacts with the second commutator segment 42, motor winding is by whole access state entering part access state, and duplex sonography is changed to little torque conditions by large torque conditions, and induced electromotive force reduces thereupon.When motor is in hypervelocity spot speed, induced electromotive force is reduced to lower than input voltage, and motor can continue to raise speed thus complete the above speed governing of hypervelocity point; Induced electromotive force reduces with the speed of rotation speed change, the relative deliquescing of mechanical property, and the rated output power of motor reduces and output torque reduces, and motor speed-raising is convenient in mechanical property deliquescing simultaneously.
When the first brush 2 and the second commutator segment 42 are separated by electric machine control system, when second brush 3 contacts with the first commutator segment 41, motor winding enters whole access state by part access state, and duplex sonography is changed to large torque conditions by little torque conditions, and induced electromotive force increases thereupon.When induced electromotive force increases to higher than input voltage, decelerating through motor, thus produce braking action.
The utility model is not addressed part and is applicable to prior art.
Claims (2)
1. a two power adaptation direct current machine, is characterized in that described motor comprises motor front end cover, the first brush, the second brush, commutator contactor, commutator adapter, rotor core, brushgear housing, rotor windings, motor case, electric machine main shaft and back end cover for motor; Described commutator contactor has the first commutator segment and the second commutator segment; Described commutator adapter has the first conducting strip and the second conducting strip;
Described motor front end cover and back end cover for motor are connected on motor case; Described commutator contactor and commutator adapter are arranged on electric machine main shaft; Described commutator contactor is connected with rotor windings with cable by commutator adapter; Described commutator adapter is connected with rotor windings by cable; Described rotor windings is embedded in rotor core, and described rotor core is arranged on electric machine main shaft; The two ends of described electric machine main shaft are arranged on motor case respectively and motor rear end covers; Described brushgear housing is fixed on motor front end cover; Described first brush is arranged in brushgear housing in the mode be free to slide along motor axial direction, thus contacts with the second commutator segment or be separated; Described second brush is arranged in brushgear housing in the mode be free to slide along motor axial direction, thus contacts with the first commutator segment or be separated; Insulator is had in the middle of described first commutator segment and the second commutator segment; Insulator is had in the middle of described first conducting strip and the second conducting strip; Conducting between described first commutator segment and the first conducting strip, and insulate between the second conducting strip; Conducting between described second commutator segment and the second conducting strip, and insulate between the first conducting strip.
2. according to claim 1 pair of power adaptation direct current machine, is characterized in that the draw ratio of described motor is 1.7-2.1:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520554288.7U CN204992954U (en) | 2015-07-28 | 2015-07-28 | Double power adaptation direct current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520554288.7U CN204992954U (en) | 2015-07-28 | 2015-07-28 | Double power adaptation direct current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204992954U true CN204992954U (en) | 2016-01-20 |
Family
ID=55127278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520554288.7U Expired - Fee Related CN204992954U (en) | 2015-07-28 | 2015-07-28 | Double power adaptation direct current motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204992954U (en) |
-
2015
- 2015-07-28 CN CN201520554288.7U patent/CN204992954U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20160120 |
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| CF01 | Termination of patent right due to non-payment of annual fee |