CN202503418U - Motor with a commutator - Google Patents
Motor with a commutator Download PDFInfo
- Publication number
- CN202503418U CN202503418U CN2012201212225U CN201220121222U CN202503418U CN 202503418 U CN202503418 U CN 202503418U CN 2012201212225 U CN2012201212225 U CN 2012201212225U CN 201220121222 U CN201220121222 U CN 201220121222U CN 202503418 U CN202503418 U CN 202503418U
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- CN
- China
- Prior art keywords
- circuit board
- motor
- piezo
- commutator
- resistance
- 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
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Abstract
Provided is a motor with a commutator. The motor comprises a stator, a rotor provided with a plurality of armature windings and a rotating shaft, and an electric brush. The commutator includes a plurality of commutator segments, the two ends of each armature winding are respectively connected to two commutator segments and are connected with a piezoresistor in parallel, and the piezoresistors include a body, and a first electrode and a second electrode arranged at the two ends of the body. The motor is further internally provided with a circuit board for arranging the piezoresistors and a plurality of pins inserted in the circuit board and contacting the commutator segments, the piezoresistors are electrically connected with the plurality of pins through a printed circuit on the circuit board and are electrically connected with the commutator segments through the circuit board and the pins, and the arrangement of the circuit board and the pins enables the plurality of piezoresistors to be reasonably configured in the motor, thus providing convenience for assembly and simplifying the structure.
Description
Technical field
The utility model relates to a kind of motor with commutator, refers in particular to the motor that a kind of inside is provided with piezo-resistance.
Background technology
Motor with commutator generally includes stator, is provided with the rotor of armature winding and the brush that contacts with commutator.As everyone knows; Armature winding is when switching-over; Because the sense of current changes, the winding two ends will produce very strong self induction electromotive force, and its numerical value can reach more than tens of times even hundreds of times of supply voltage; When this voltage reaches 300V when above, it is electric spark that arc discharge will take place between the contact of brush and commutator.The generation of electric spark can cause some adverse consequencess usually, as producing the very wide electromagnetic interference of frequency spectrum, makes motor become the radiated interference source; In addition, can the ablate contact of brush and commutator of the electric spark of high temperature causes the contact contact abominable and strengthen the spark scope, and then shortens the useful life of motor greatly.Therefore, for eliminating above-mentioned adverse consequences, just must avoid producing electric spark.
The method of existing a kind of effective elimination electric spark is parallel connection one piezo-resistance at the winding two ends; The very strong self induction electromotive force that armature winding is produced when switching-over puts on the two ends of this piezo-resistance; Because the resistance of piezo-resistance presents conducting state with rapid decline of increase meeting of voltage; So the potential energy of winding coil storage just is converted into heat energy, thereby avoids producing electric spark.Required piezo-resistance number equals the armature winding number of motor in the above method, and the quantity of required piezo-resistance is also less when the negligible amounts of armature winding, therefore implements than being easier to; But when the quantity of armature winding more for a long time, required piezo-resistance quantity is also more, then is difficult for this moment said a plurality of piezo-resistances reasonably are disposed in the motor, therefore, a kind of improved motor of needs is to address the above problem.
The utility model content
The purpose of the utility model is to provide a kind of motor with commutator, and this motor can effectively reduce electromagnetic interference and simple in structure, easy to assembly.
To achieve these goals; The utility model adopts following technical scheme: a kind of motor with commutator; It comprises stator, is provided with the rotor and the brush of some armature winding and rotating shaft; Said commutator comprises some commutator segments, and the two ends of each armature winding are connected on two commutator segments, and the two ends of each armature winding parallel connection one piezo-resistance; Said piezo-resistance comprises body and is positioned at first electrode and second electrode at these body two ends; Also be provided with the circuit board and the some pins that is connected in this circuit board and contacts with said commutator segment that supply said piezo-resistance setting in the said motor, be electrical connected through the printed wiring on this circuit board between said piezo-resistance and the pin, said piezo-resistance is electrical connected with said commutator segment through circuit board and pin.
Preferably; Said printed wiring comprises the some weld tabs and first lead; Said weld tabs comprises that respectively first electrode of a piezo-resistance links to each other through said first lead with second electrode of another piezo-resistance in adjacent two piezo-resistances in order to first, second weld tabs of first, second electrode of welding piezo-resistance.
Preferably, said circuit board is provided with the jack that the said pin of some confessions plugs, and said printed wiring also comprises second lead that is positioned at the 3rd weld tabs around the said jack and connects said the 3rd weld tabs and said second weld tabs.
Preferably, said some first, second, third weld tabs are three concentric circless that evenly are provided with on the said circuit board, and formed three concentric circless of said first, second, third weld tabs are arranged on the circuit board by from outside to inside order.
Preferably, said piezo-resistance and pin are installed on sub-assembly behind the said circuit board and are located in the said rotating shaft and are overlying on the said commutator.
Preferably, said pin comprises the Plug Division of inserting said jack and extends the contact site of circuit board lower surface that said contact site contacts with the end face of said commutator segment.
Preferably, said motor also comprises the pressing plate of being located in the said rotating shaft, and said sub-assembly is clamped between this pressing plate and the said commutator.
Preferably; Said pressing plate comprises that the main part that is covered on the circuit board reaches from this main part to the fixed lever that extends below; Be provided with the recess that supplies said fixed lever to pass on the said circuit board between adjacent two first weld tabs; Form and said recess groove opposite between said two commutator segments, the end of said fixed lever is plugged in the said groove.
Preferably, said rotating shaft is provided with bearing, is provided with the compression spring between this bearing and the said pressing plate.
Preferably, said circuit board and pressing plate are respectively equipped with through hole and the mating holes that supplies said rotating shaft to pass.
Compared with prior art; A plurality of piezo-resistances in the utility model are assembled on the commutator of rotor with this circuit board and said pin after being arranged at a circuit board jointly; Thereby realize the reasonable disposition of a plurality of piezo-resistances in motor, reach the effect of ease of assembly and simplified structure.
Description of drawings
Fig. 1 is the utility model internal structure of motor sketch map.
Fig. 2 is the enlarged drawing that encloses part among Fig. 1.
Fig. 3 is the stereogram after bearing described in the utility model motor, spring, pressing plate, piezo-resistance, circuit board, pin, commutator and the rotor assembling.
Fig. 4 is the exploded view of Fig. 3, and its middle (center) bearing, spring do not show.
Fig. 5 is the stereogram after piezo-resistance described in the utility model motor and pin are installed on circuit board.
Fig. 6 is the front view that piezo-resistance described in the utility model motor and pin are installed on circuit board.
Fig. 7 is the sketch map of printed wiring on the circuit board described in the utility model motor.
Embodiment
Fig. 1 is to shown in Figure 3 for ginseng, is one the brush direct current machine to be arranged at motor described in this execution mode, and it comprises stator 1, rotor 2, commutator 3 and brush (not label).Insert a rotating shaft 4 in the middle of the said rotor 2, the two ends of this rotating shaft 4 are provided with bearing 100,101.Rotor 2 surfaces dash has groove, is provided with armature winding (not shown) in the groove.Said commutator 3 is installed in the rotating shaft 4, and commutator 3 has the commutator segment 31 that equates with said armature winding quantity, is formed with groove 32 between adjacent two commutator segments.16 armature winding are set in the utility model altogether; 3 correspondences of commutator are provided with 16 commutator segments; The lead of armature winding is connected with commutator segment 31 by certain rule, is connected on adjacent two commutator segments at the lead two ends of armature winding described in this execution mode.
Ginseng Fig. 3 also is provided with the piezo-resistance 5 that quantity equates with said armature winding and commutator segment 31, promptly 16 to shown in Figure 5 in the said motor.These piezo-resistances 5 are arranged on the circuit board 6 with printed wiring jointly, this circuit board 6 ringwise, its center is provided with a through hole 61, evenly is provided with 16 recesses 62 that opening is outside on its circumference.Number of pins 7 is inserted on the circuit board 6, and the quantity of pin 7 equals the quantity of piezo-resistance 5, promptly 16.In conjunction with shown in Figure 2, each pin 7 comprises the Plug Division 71 that is inserted in the circuit board 6, this Plug Division 71 is extended the bending connecting portion 72 of circuit board 6 lower surfaces and the contact site 73 that contacts from these connecting portion 72 commutator segments 31 that be bent to form and said downwards certainly.Piezo-resistance 5 and pin 7 are assembled in sub-assembly behind the circuit board 6 and are installed on said rotating shaft 4 and are covered on the said commutator 3.In addition; Also be provided with pressing plate 8 in the said motor; Said sub-assembly is clamped between this pressing plate 8 and the commutator 3, and the downforce that acts on circuit board 6 at the utility model center platen 8 is provided by a compression spring 9, and this compression spring 9 is located between said bearing 100 and the pressing plate 8.Pressing plate 8 comprise the main part 81 that is covered on the circuit board 6 and some around this main part 81 to the fixed lever that extends below 82; The end 83 that these fixed levers 82 pass said recess 62 and fixed lever 62 is plugged in the groove 32 of said commutator 3; Under the resilient force of spring 9, pressing plate 8 is fixed on the commutator 3.Pressing plate 8 centers are provided with a mating holes 84, and said rotating shaft 4 turns over said through hole 61 and this mating holes 84 simultaneously, and said spring 9 is located in the resettlement section 85 on pressing plate 8 main parts 81 and is sheathed in the rotating shaft 4.
Ginseng Fig. 5 is to shown in Figure 7, and said piezo-resistance 5 is SMD piezo-resistance in the utility model, first electrode 52 and second electrode 53 that it comprises body 51 and is positioned at these body two ends.The printed wiring of said circuit board 6 comprises the lead of some weld tabs and join dependency weld tabs.Wherein, said weld tabs comprises respectively in order to weld first weld tabs 63 and second weld tabs 64 of piezo-resistance 5 first electrodes 52 and second electrode 53.Circuit board 6 is provided with the jack 68 that Plug Division 71 (see figure 2)s of the said pin 7 of some confessions are inserted, and said weld tabs also comprises the 3rd weld tabs 65 that is positioned at around the jack 61.A plurality of first, second, third weld tabs 63,64,65 form three concentric circless that evenly are arranged on the circuit board 6, and first, second, third weld tabs, 63,64,65 formed three concentric circless are arranged on the circuit board 6 by from outside to inside order.
Ginseng Fig. 5 is to shown in Figure 7; Said lead comprises some first leads 66 and second lead 67, and existing is that example specifically describes the be provided with situation of lead on circuit board 6 with three piezo-resistance 5-1 among Fig. 6,5-2,5-3 and corresponding three pin 7-1,7-2,7-3.The first electrode 52-1 of three piezo-resistance 5-1,5-2,5-3,52-2,52-3 and the second electrode 53-1,53-2,53-3 be corresponding, and to be soldered to the first weld tabs 63-1,63-2,63-3 and the second weld tabs 64-1,64-2, the 64-3 of circuit board 6 last; Insert in the said jack 68 Plug Division of said pin 7-1,7-2,7-3, and the 3rd weld tabs 65-1,65-2, the 65-3 that are soldered to circuit board 6 then are last.At first; Link to each other through the first lead 66-1 between adjacent two piezo-resistance 5-1, the pairing first weld tabs 63-1 of 5-2 and the second weld tabs 64-2, so the first electrode 52-1 of piezo-resistance 5-1 and the second electrode 53-2 of piezo-resistance 5-2 just link together through the first lead 66-1.Secondly, link to each other like this above-mentionedly just link together between the second weld tabs 64-2 and the 3rd weld tabs 65-2 through the second lead 67-2 and pin 7-2 through the first lead 66-1 continuous first, second electrode 52-1,53-2 through the said second lead 67-2.In addition; Because the contact site 73 of said pin 7 contacts (as shown in Figure 2) with the end face 310 of said commutator segment 31, therefore the first electrode 52-1 and the second electrode 53-2 of adjacent two piezo-resistance 5-1,5-2 are connected on the same commutator segment 31 through said first, second lead 66-1,67-2 and pin 7-2 simultaneously.In like manner, the first electrode 52-2 of other one group of adjacent piezo-resistance 5-2,5-3 and the second electrode 53-3 also are connected on the same commutator segment 31 through corresponding first, second lead 66-2,67-3 and pin 7-3 simultaneously.Therefore, to single piezo-resistance 5-2, its first, second electrode 52-2,53-2 are connected to respectively on two adjacent commutator segments, and the two poles of the earth of each piezo-resistance 5 of deducibility also are connected to respectively on two adjacent commutator segments 31 thus.Simultaneously, because the two ends of each armature winding are connected on the protrusion hook 32 of adjacent two commutator segments 31 in the utility model, so each piezo-resistance 5 correspondence is connected in parallel to the two ends of each armature winding.
The utility model motor adopts piezo-resistance 6 to be parallel to the two ends of armature winding; Reach the purpose of effective reduction electromagnetic interference; Said circuit board and pin are set simultaneously, said a plurality of piezo-resistance 6 reasonably is disposed in the motor, play the effect of ease of assembly and simplified structure.In addition; It below only is description to the utility model preferred forms; Certainly the utility model also has other execution modes; Be not limited to the form in this execution mode like the form of said pressing plate, the form and the particular location of spring, all employings are equal to or the technical scheme that mode obtained of equivalent transformation, all should be within the protection range of the utility model.
Claims (10)
1. motor with commutator; It comprises stator, is provided with the rotor and the brush of some armature winding and rotating shaft; Said commutator comprises some commutator segments; The two ends of each armature winding are connected on two commutator segments; And the two ends of each armature winding parallel connection one piezo-resistance, said piezo-resistance comprises body and is positioned at first electrode and second electrode at these body two ends, it is characterized in that: also be provided with the circuit board and the some pins that is connected in this circuit board and contacts with said commutator segment that supply said piezo-resistance setting in the said motor; Be electrical connected through the printed wiring on this circuit board between said piezo-resistance and the pin, said piezo-resistance is through circuit board and pin and be electrical connected with said commutator segment.
2. motor as claimed in claim 1; It is characterized in that: said printed wiring comprises the some weld tabs and first lead; Said weld tabs comprises that respectively first electrode of a piezo-resistance links to each other through said first lead with second electrode of another piezo-resistance in adjacent two piezo-resistances in order to first, second weld tabs of first, second electrode of welding piezo-resistance.
3. motor as claimed in claim 2; It is characterized in that: said circuit board is provided with the jack that the said pin of some confessions plugs, and said printed wiring also comprises second lead that is positioned at the 3rd weld tabs around the said jack and connects said the 3rd weld tabs and said second weld tabs.
4. motor as claimed in claim 3; It is characterized in that: said some first, second, third weld tabs are three concentric circless that evenly are provided with on the said circuit board, and formed three concentric circless of said first, second, third weld tabs are arranged on the circuit board by from outside to inside order.
5. like each described motor in the claim 2 to 4, it is characterized in that: said piezo-resistance and pin are installed on sub-assembly behind the said circuit board and are located in the said rotating shaft and are overlying on the said commutator.
6. motor as claimed in claim 5 is characterized in that: said pin comprises the Plug Division of inserting said jack and extends the contact site of circuit board lower surface that said contact site contacts with the end face of said commutator segment.
7. motor as claimed in claim 6 is characterized in that: said motor also comprises the pressing plate of being located in the said rotating shaft, and said sub-assembly is clamped between this pressing plate and the said commutator.
8. motor as claimed in claim 7; It is characterized in that: said pressing plate comprises that the main part that is covered on the circuit board reaches from this main part to the fixed lever that extends below; Be provided with the recess that supplies said fixed lever to pass on the said circuit board between adjacent two first weld tabs; Form and said recess groove opposite between said two commutator segments, the end of said fixed lever is plugged in the said groove.
9. motor as claimed in claim 8 is characterized in that: said rotating shaft is provided with bearing, is provided with the compression spring between this bearing and the said pressing plate.
10. motor as claimed in claim 9 is characterized in that: said circuit board and pressing plate are respectively equipped with through hole and the mating holes that supplies said rotating shaft to pass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201212225U CN202503418U (en) | 2012-03-27 | 2012-03-27 | Motor with a commutator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201212225U CN202503418U (en) | 2012-03-27 | 2012-03-27 | Motor with a commutator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202503418U true CN202503418U (en) | 2012-10-24 |
Family
ID=47040017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201212225U Expired - Fee Related CN202503418U (en) | 2012-03-27 | 2012-03-27 | Motor with a commutator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202503418U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016033753A1 (en) * | 2014-09-03 | 2016-03-10 | 广东肇庆爱龙威机电有限公司 | Ring varistor-based method for reducing electromagnetic interference of motor |
| CN106911232A (en) * | 2017-04-01 | 2017-06-30 | 宁波韵升汽车电机***有限公司 | The pressure setting and drawing method of armature commutator |
| CN110957864A (en) * | 2019-12-12 | 2020-04-03 | 深圳市凯中精密技术股份有限公司 | Commutator and production method |
-
2012
- 2012-03-27 CN CN2012201212225U patent/CN202503418U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016033753A1 (en) * | 2014-09-03 | 2016-03-10 | 广东肇庆爱龙威机电有限公司 | Ring varistor-based method for reducing electromagnetic interference of motor |
| CN106797164A (en) * | 2014-09-03 | 2017-05-31 | 广东肇庆爱龙威机电有限公司 | Method based on ring varistor reduction EMI of motor |
| CN106797164B (en) * | 2014-09-03 | 2019-07-23 | 广东肇庆爱龙威机电有限公司 | The method for reducing EMI of motor based on ring varistor |
| CN106911232A (en) * | 2017-04-01 | 2017-06-30 | 宁波韵升汽车电机***有限公司 | The pressure setting and drawing method of armature commutator |
| CN106911232B (en) * | 2017-04-01 | 2024-04-16 | 宁波韵升电驱动技术有限公司 | Pressing device and pressing method for armature commutator |
| CN110957864A (en) * | 2019-12-12 | 2020-04-03 | 深圳市凯中精密技术股份有限公司 | Commutator and production method |
| WO2021114544A1 (en) * | 2019-12-12 | 2021-06-17 | 深圳市凯中精密技术股份有限公司 | Commutator and production method |
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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: 20121024 Termination date: 20150327 |
|
| EXPY | Termination of patent right or utility model |