CN202696429U - Brush direct current motor - Google Patents
Brush direct current motor Download PDFInfo
- Publication number
- CN202696429U CN202696429U CN 201220283728 CN201220283728U CN202696429U CN 202696429 U CN202696429 U CN 202696429U CN 201220283728 CN201220283728 CN 201220283728 CN 201220283728 U CN201220283728 U CN 201220283728U CN 202696429 U CN202696429 U CN 202696429U
- Authority
- CN
- China
- Prior art keywords
- carbon brush
- brush
- motors
- power supply
- elastomeric element
- 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
The utility model discloses a brush direct current motor which comprises a bottom cover, a carbon brush barrel arranged on the bottom cover, a carbon brush which is matched with the carbon brush barrel and can slide along the carbon brush barrel, an inverter which is in contact with the carbon brush, and an elastic part, wherein one end of the elastic part is connected with the bottom cover and the other end of the elastic part is in contact with the carbon brush. By the brush direct current motor, under the condition that the external size of the brush direct current motor is not changed, the space is rationally used; and furthermore, the relatively long carbon brush is ingeniously arranged, so that the service life of the brush direct current motor is greatly prolonged.
Description
Technical field
The utility model relates to motor, particularly a kind of brush DC motors.
Background technology
At present, common are on the market the brush DC motor owing to the restriction of internal structure, the Length Ratio of carbon brush is shorter, so that the life-span of brush DC motors is shorter.When carbon brush is ground off certain-length by commutator, be to the end the useful life of brush DC motors, and the parts or good such as armature winding wherein, commutator and bearing, thereby cause great waste.
The utility model content
The purpose of this utility model is that a kind of novel brush DC motors will be provided, and can solve above-mentioned prior art problem.
According to an aspect of the present utility model, a kind of brush DC motors is provided, has comprised bottom, be located at the carbon brush cylinder on the bottom, with carbon brush cylinder coupling, the carbon brush that can slide along the carbon brush cylinder, with the commutator of carbon brush contact with is connected the elastomeric element that end is connected with bottom, the other end contacts with carbon brush.
The utility model brush DC motors has reasonably utilized the space in the situation that do not change existing brush DC motor external dimensions, can the longer carbon brush of installation length, greatly prolonged the useful life of brush DC motors.
In some embodiments, the elastomeric element of the utility model brush DC motors is torsion spring.Thus, has the effect that takes full advantage of the brush DC motors inner space.
In some embodiments, the utility model brush DC motors also comprises the jut of being located on the bottom, and jut inserts the spring coil of torsion spring.Thus, has the effect that limits the torsion spring position.
In some embodiments, the carbon brush cylinder of the utility model brush DC motors is provided with U-lag.Thus, has the effect that the other end of guaranteeing elastomeric element contacts with carbon brush all the time.
In some embodiments, the elastomeric element of the utility model brush DC motors adopts metal material.Thus, elastomeric element has good elasticity.
In some embodiments, the utility model brush DC motors also comprises external power supply input and the external power supply output of being located on the bottom, and the other end of elastomeric element is connected with bottom by external power supply input or external power supply output.Thus, elastomeric element has the effect of conduction and the effect of promotion carbon brush simultaneously.
Description of drawings
Fig. 1 is a kind of outside schematic diagram of general brush DC motors.
Fig. 2 is the cross-sectional schematic along B-B place among Fig. 1 of the brush DC motors of a kind of execution mode of the utility model.
Fig. 3 is the schematic diagram of the carbon brush cylinder of brush DC motors shown in Figure 2.
Fig. 4 is the cross-sectional schematic along B-B place among Fig. 1 of the brush DC motors of prior art.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
Fig. 1 has schematically shown a kind of external agency of general brush DC motors.Casing 10 is that an end opens wide, and other end center is provided with the columnar container of through hole, and circular bottom 9 is fixedly connected with casing 10 at the end that casing 10 opens wide.The edge of bottom 9 be fixed with strip, penetrate external power supply input 11 bottom 9, copper and external power supply output 12, the center of bottom 9 is provided with clutch shaft bearing 61.The through hole at the center of the other end of casing 10 is provided with the second bearing 62.Commutator 6 is connected with bottom 9 by clutch shaft bearing 61, is connected with casing 10 by the second bearing 62.
Fig. 2 has schematically shown the sectional structure along B-B place among Fig. 1 of a kind of brush DC motors of the present utility model.As shown in Figure 2, this brush DC motors comprises bottom 9, external power supply input 11, external power supply output 12, two carbon brush cylinders (the first carbon brush cylinder 41 and the second carbon brush cylinder 42), two carbon brush (the first carbon brush 51 and the second carbon brush 52) and two elastomeric elements (the first elastomeric element 21 and the second elastomeric element 22) of commutator 6, circle.
External power supply input 11, external power supply output 12, the first carbon brush cylinder 41 and the second carbon brush cylinder 42 are fixedly installed on the edge of bottom 9.The first carbon brush cylinder 41 and the second carbon brush cylinder 42 all are the containers of the square tube shape of both ends open.The first rectangular-shaped carbon brush 51 is positioned at the first carbon brush cylinder 41 inside, and the first carbon brush 51 can be along the first carbon brush cylinder 41 slides within.The second rectangular-shaped carbon brush 52 is positioned at the second carbon brush cylinder 42 inside, and the second carbon brush 52 can be along the second carbon brush cylinder 42 slides within.One end of the first elastomeric element 21 is connected with external power supply input 11, an end in contact of the other end and the first carbon brush 51.One end of the second elastomeric element 22 is connected with external power supply output 12, an end in contact of the other end and the first carbon brush 52.Commutator 6 contacts with the other end of the first carbon brush 51 and the other end of the second carbon brush 52 respectively.The first carbon brush cylinder 41 and the second carbon brush cylinder 42 play support to the first carbon brush 51 and the second carbon brush 52 respectively.
In the present embodiment, the first elastomeric element 21 and the second elastomeric element 22 all are torsion springs, are respectively the first torsion spring and the second torsion spring, all adopt steel matter.The edge of bottom 9 is provided with columniform the first jut 71 and the second jut 72.The first jut 71 inserts the spring coil of the first torsion spring, and the second jut 72 inserts the spring coil of the second torsion spring.The one end arm of force of the first torsion spring is connected with external power supply input 11, an end in contact of the other end arm of force and the first carbon brush 51.The one end arm of force of the second torsion spring is connected with external power supply output 12, an end in contact of the other end arm of force and the second carbon brush 52.
In the time of the work of this brush DC motors, because the other end of the first carbon brush 51 is worn and torn by commutator 6, the first carbon brush 51 shortens gradually, and it is close to commutator 6 along the first carbon brush cylinder 41 that the first torsion spring promotes the first carbon brush 51, and the other end of the first carbon brush 51 is contacted with commutator 6 all the time.In like manner, because the other end of the second carbon brush 52 is worn and torn by commutator 6, the second carbon brush 52 shortens gradually, and it is close to commutator 6 along the second carbon brush cylinder 42 that the second torsion spring promotes the second carbon brush 52, and the other end of the second carbon brush 52 is contacted with commutator 6 all the time.Because the first torsion spring and the second torsion spring all are steel matter, the first torsion spring and the second torsion spring also have the effect of conduction when promoting respectively the first carbon brush 51 and the second carbon brush 52.
As shown in Figure 3, the first carbon brush cylinder 41 can slide along the first U-lag 31 near the other end arm of force that a side of the first torsion springs is provided with the first U-lag 31, the first torsion springs.Equally, the second carbon brush cylinder 42 is provided with second a U-lag (not shown) near a side of the second torsion spring, and the other end arm of force of the second torsion spring can slide along the second U-lag.
In other embodiments, the first elastomeric element 21 and the second elastomeric element 22 also can be shell fragment or Compress Spring etc., can adopt the materials such as copper, iron.
Fig. 4 has schematically shown the structure along B-B place among Fig. 2 of the brush DC motors of prior art.As shown in Figure 4, being connected with the external power supply input with an end of the first carbon brush 51 respectively and being connected in the two ends of the first elastomeric element 21 of the brush DC motors of prior art, is connected with the external power supply output with an end of the second carbon brush 52 respectively and is connected in the two ends of the second elastomeric element 22.Commutator 6 contacts with the other end of the first carbon brush 51 and the other end of the second carbon brush 52 respectively.Although the first carbon brush 51 opposite side relative with the side that the second carbon brush 52 contacts with commutator 6 be some space also, but, if the first carbon brush 51 and the second carbon brush 52 arrange long, the contact angle of the first carbon brush 51 and the second carbon brush 52 and commutator 6 can be along with the first carbon brush 51 and the second carbon brush 52 degrees of wear different and different, stability can be variant.
Following table is in the identical situation of the D outer diameter of brush DC motors, effective length L1 and the ratio thereof of the effective length L2 of the carbon brush of the brush DC motors of prior art, the carbon brush of brush DC motors of the present utility model.
| Embodiment | D(mm) | L2(mm) | L1(mm) | L1/L2 |
| 1 | 24.4 | 3.5 | 9 | 2.57 |
| 2 | 27.5 | 3.5 | 9 | 2.57 |
| 3 | 29 | 5.5 | 11 | 2 |
Thus table as seen, in the identical situation of the D outer diameter of brush DC motors, the effective length of the carbon brush of brush DC motors of the present utility model is far longer than the effective length of carbon brush of the brush DC motors of prior art.Because the effective length of carbon brush has determined the useful life of brush DC motors, is far longer than the useful life of the brush DC motors of prior art the useful life of visible brush DC motors of the present utility model.
Above-described only is execution modes more of the present utility model.For the person of ordinary skill of the art, under the prerequisite that does not break away from the utility model creation design, can also make some distortion and improvement, these all belong to protection range of the present utility model.
Claims (6)
1. brush DC motors is characterized in that, comprises
Bottom,
Be located at the carbon brush cylinder on the described bottom,
With described carbon brush cylinder coupling, the carbon brush that can slide along described carbon brush cylinder,
The commutator that contacts with described carbon brush, and
The elastomeric element that one end is connected with described bottom, the other end contacts with described carbon brush.
2. brush DC motors according to claim 1 is characterized in that described elastomeric element is torsion spring.
3. brush DC motors according to claim 2 characterized by further comprising the jut of being located on the described bottom, and described jut inserts the spring coil of described torsion spring.
4. brush DC motors according to claim 1 is characterized in that described carbon brush cylinder is provided with U-lag.
5. each described brush DC motors is characterized in that described elastomeric element adopts metal material according to claim 1～4.
6. brush DC motors according to claim 5, characterized by further comprising external power supply input and the external power supply output be located on the described bottom, the other end of described elastomeric element is connected with described bottom by described external power supply input or described external power supply output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220283728 CN202696429U (en) | 2012-06-15 | 2012-06-15 | Brush direct current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220283728 CN202696429U (en) | 2012-06-15 | 2012-06-15 | Brush direct current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202696429U true CN202696429U (en) | 2013-01-23 |
Family
ID=47551982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220283728 Expired - Fee Related CN202696429U (en) | 2012-06-15 | 2012-06-15 | Brush direct current motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202696429U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103259371A (en) * | 2013-05-03 | 2013-08-21 | 东莞市高创电机科技有限公司 | Slot-type circuit board applied to motor and assembly process thereof |
-
2012
- 2012-06-15 CN CN 201220283728 patent/CN202696429U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103259371A (en) * | 2013-05-03 | 2013-08-21 | 东莞市高创电机科技有限公司 | Slot-type circuit board applied to motor and assembly process thereof |
| CN103259371B (en) * | 2013-05-03 | 2015-12-02 | 东莞市高创电机科技有限公司 | A kind of plug-in grooved type circuit plate and packaging technology thereof being applied to motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20130615 |