CN201466900U - Electric brush structure of direct current (DC) motor - Google Patents
Electric brush structure of direct current (DC) motor Download PDFInfo
- Publication number
- CN201466900U CN201466900U CN2009200720327U CN200920072032U CN201466900U CN 201466900 U CN201466900 U CN 201466900U CN 2009200720327 U CN2009200720327 U CN 2009200720327U CN 200920072032 U CN200920072032 U CN 200920072032U CN 201466900 U CN201466900 U CN 201466900U
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- brush
- motor
- arc
- holder
- direct current
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Abstract
The utility model relates to an electric brush structure of a direct current (DC) motor, comprising an electric brush, an elastic pressing member and a fixed seat fixed with an engine base of the motor, wherein the electric brush is arranged in the fixed seat, and the head part of the electric brush leans against and contacts with the outer surface of a commutator of the motor; the elastic pressing member is arranged between the fixed seat and the electric brush; the electric brush is an ach-shaped electric brush, and preferably, the arc-shaped electric brush is a quarter arc-shaped electric brush; the elastic pressing member is a torsional spring the elastic movable end of which leans against the rear end of the arc-shaped electric brush; the fixed seat comprises a brush carrier plate, a brush holder and a brush handle, wherein the brush carrier plate is fixed with the engine base, the brush handle is fixed with the brush carrier plate through the brush holder, and the electric brush is inserted in the brush handle; and the elastic pressing member is fixed on the brush handle, the brush holder or the brush carrier plate. The utility model has artful design and simple structure and can prolong the service life of the motor without increasing the size of the motor, thereby not increasing the production cost and not influencing the application of the motor.
Description
Technical field
The utility model relates to the electric machine structure technical field, and particularly the DC motor structure technical field specifically is meant a kind of direct current machine brush structure.
Background technology
Common direct current machine comprises casing, include stator (standing part) and armature (rotor portion) in the casing, stator is fixed in the casing, armature is arranged in stator, and its operation principle is to drag armature with motor to make it constant speed rotation counterclockwise, and coil side cuts the magnetic line of force under the opposed polarity magnetic pole respectively, induction produces electromotive force, the alternating electromotive force that induction in the armature coil produces, the commutation effect by commutator cooperation brush makes it to become direct electromotive force. when the brush end is drawn.
And existing brush is vertical bar shaped, and brush is inserted in the brush carrier.A spring bearer plate is arranged on the top of brush, make brush on commutator, keep certain contact pressure.Brush carrier is fixed on the brush holder support, and on every brush holder support several brush carriers is housed, and decides on the amount of capacity of motor.Brush holder support is fixed on the brush yoke.The radical of brush holder support equates with the number of main pole.Brush yoke is fixed on the end cap.Above-mentioned brush structure is an induce one vitals of rotating armature of the direct current with power supply.The commutator rotation because brush is fixed, therefore brush is is constantly worn and torn, therefore, the length of brush has determined the useful life of motor, if but adopt long brush, the volume that just needs increasing motor, other parts that cooperate with this motor all need to make corresponding adjustment, and this will cause the significantly increase of production cost, if other component does not adjust, then the motor that should increase will no longer be fit to this kind operational environment, limit the application of motor.
Therefore, how under the prerequisite in the useful life that prolongs motor, increasing motor volume not, thus do not increase production cost, do not influence the application of motor, be a great problem of pendulum in face of the inventor.
The utility model content
The purpose of this utility model is to have overcome above-mentioned shortcoming of the prior art, a kind of direct current machine brush structure is provided, this direct current machine brush structural design is ingenious, simple in structure, can be the useful life that prolongs motor, do not increase the volume of motor, thereby do not increase production cost, do not influence the application of motor.
To achieve these goals, direct current machine brush structure of the present utility model has following formation:
This direct current machine brush structure, comprise brush, elastic pressure parts and the holder of fixing with the support of motor, described brush is arranged in the described holder, described brush head abuts contacts the outer surface of the commutator of described motor, described elastic pressure parts is arranged between described holder and the brush, be characterized in that described brush is the arc brush.
Preferably, described arc brush is a quadrant arc brush.
Preferably, described elastic pressure parts is a torsion spring.
Preferably, the elasticity movable end of described elastic pressure parts is against the rear end of described arc brush.
More preferably, the rear end of described arc brush has spacing recess, and the elasticity movable end of described elastic pressure parts supports is located at described spacing recess.
Preferably, described holder comprises and fixing brush holder plate, brush holder support and the brush carrier of described support, described brush carrier is fixed by described brush holder support and described brush holder plate, and described brush is plugged in the described brush carrier, and described elastic pressure parts is fixed on described brush carrier, described brush holder support or the described brush holder plate.
More preferably, described brush carrier is the arc brush carrier, and this arc brush carrier and described arc brush shape are complementary.
The beneficial effects of the utility model are specific as follows:
1, thereby the utility model prolongs the useful life of motor by adopting the arc brush in the volume that does not increase motor, designs ingenious, simple in structure;
2, adopt motor volume of the present utility model not increase, can directly apply to former operational environment, the parts of Pei Heing need not to make adjustment with it, do not increase production cost, can not produce any influence to its application;
3, the utility model adopts the perfect outer surface that keeps the arc brush is pressed on commutator of torsion spring, can not cause changes of properties owing to the change of brush shape.
Description of drawings
Fig. 1 is the structural representation that a specific embodiment of the present utility model is positioned at electric machine stand.
Embodiment
In order more to be expressly understood technology contents of the present utility model, describe in detail especially exemplified by following examples.
See also shown in Figure 1, direct current machine brush structure of the present utility model, comprise brush 1, elastic pressure parts 2 and the holder of fixing with the support 3 of motor, described brush 1 is arranged in the described holder, described brush 1 head abuts contacts the outer surface of the commutator 4 of described motor, described elastic pressure parts 2 is arranged between described holder and the brush 1, and described brush 1 is the arc brush.
In a specific embodiment of the present utility model, described arc brush is a quadrant arc brush.
Preferably, described elastic pressure parts 2 is torsion springs.In a specific embodiment of the present utility model, torsion spring is fixed on the position at the place, the center of circle of arc brush, thereby the elasticity movable end of torsion spring is the center of circle with the torsion spring fixed position, the force direction that the arc brush is applied is that the camber line along the arc brush carries out, thereby the arc brush is pressed on the outer surface of commutator 4, has guaranteed the good of performance.
Preferably, the elasticity movable end of described elastic pressure parts 2 is against the rear end of described arc brush.The elasticity movable end of elastic pressure parts 2 also can act on other position of described arc brush not against the rear end of described arc brush, as long as make the arc brush against contact commutator 4 outer surfaces.
More preferably, the rear end of described arc brush has spacing recess, and the elasticity movable end of described elastic pressure parts 2 supports is located at described spacing recess.In a specific embodiment of the present utility model, the elasticity movable end of torsion spring supports the spacing recess of the rear end of being located at described arc brush.Adopt concavo-convex being combined with to help torsion spring and act on the arc brush securely.
Preferably, described holder comprises brush holder plate 5, brush holder support (not shown) and the brush carrier of fixing with described support 36, described brush carrier 6 is fixing by described brush holder support and described brush holder plate 5, described brush 1 is plugged in the described brush carrier 6, and described elastic pressure parts 2 is fixed on described brush carrier 6, described brush holder support or the described brush holder plate 5.
In a specific embodiment of the present utility model, described brush carrier 6 is arc brush carriers, and this arc brush carrier and described arc brush shape are complementary.
When the utility model uses, brush 1 with commutator 4 continuous friction processes in constantly worn and torn, under the effect of elastic pressure parts 2, remain appropriateness contact, wear away fully, because the brush 1 that adopts is the arc brush until brush 1 to commutator 4, thereby can be under the situation of same motor volume, the length of the arc brush that can adopt is longer than the length of the vertical bar shaped brush that can adopt, thereby when being implemented in the volume that does not increase motor, prolongs the useful life of motor.
To sum up, direct current machine brush structural design of the present utility model is ingenious, simple in structure, can not increase the volume of motor when prolonging the useful life of motor, thereby does not increase production cost, do not influence the application of motor.
In this specification, the utility model is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from spirit and scope of the present utility model.Therefore, specification and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (7)
1. direct current machine brush structure, comprise brush, elastic pressure parts and the holder of fixing with the support of motor, described brush is arranged in the described holder, described brush head abuts contacts the outer surface of the commutator of described motor, described elastic pressure parts is arranged between described holder and the brush, it is characterized in that described brush is the arc brush.
2. direct current machine brush structure according to claim 1 is characterized in that, described arc brush is a quadrant arc brush.
3. direct current machine brush structure according to claim 1 is characterized in that described elastic pressure parts is a torsion spring.
4. direct current machine brush structure according to claim 1 is characterized in that the elasticity movable end of described elastic pressure parts is against the rear end of described arc brush.
5. direct current machine brush structure according to claim 4 is characterized in that the rear end of described arc brush has spacing recess, and the elasticity movable end of described elastic pressure parts supports is located at described spacing recess.
6. direct current machine brush structure according to claim 1, it is characterized in that, described holder comprises and fixing brush holder plate, brush holder support and the brush carrier of described support, described brush carrier is fixed by described brush holder support and described brush holder plate, described brush is plugged in the described brush carrier, and described elastic pressure parts is fixed on described brush carrier, described brush holder support or the described brush holder plate.
7. direct current machine brush structure according to claim 6 is characterized in that described brush carrier is the arc brush carrier, and this arc brush carrier and described arc brush shape are complementary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200720327U CN201466900U (en) | 2009-05-12 | 2009-05-12 | Electric brush structure of direct current (DC) motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200720327U CN201466900U (en) | 2009-05-12 | 2009-05-12 | Electric brush structure of direct current (DC) motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201466900U true CN201466900U (en) | 2010-05-12 |
Family
ID=42394247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200720327U Expired - Fee Related CN201466900U (en) | 2009-05-12 | 2009-05-12 | Electric brush structure of direct current (DC) motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201466900U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403843A (en) * | 2011-11-10 | 2012-04-04 | 河北汉光重工有限责任公司 | Electric brush of wind-power slip ring |
| CN104426038A (en) * | 2013-08-27 | 2015-03-18 | 罗伯特·博世有限公司 | Brush device for an electric machine, and electric machine |
| CN109378666A (en) * | 2018-10-16 | 2019-02-22 | 阿美德格工业技术（上海）有限公司 | Brush assembly of electric and motor |
-
2009
- 2009-05-12 CN CN2009200720327U patent/CN201466900U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403843A (en) * | 2011-11-10 | 2012-04-04 | 河北汉光重工有限责任公司 | Electric brush of wind-power slip ring |
| CN104426038A (en) * | 2013-08-27 | 2015-03-18 | 罗伯特·博世有限公司 | Brush device for an electric machine, and electric machine |
| CN104426038B (en) * | 2013-08-27 | 2019-03-08 | 罗伯特·博世有限公司 | Brushgear and motor for motor |
| CN109378666A (en) * | 2018-10-16 | 2019-02-22 | 阿美德格工业技术（上海）有限公司 | Brush assembly of electric and 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: 20100512 Termination date: 20100512 |