CN203911634U - Electric brush assembly and motor comprising same - Google Patents
Electric brush assembly and motor comprising same Download PDFInfo
- Publication number
- CN203911634U CN203911634U CN201420193024.9U CN201420193024U CN203911634U CN 203911634 U CN203911634 U CN 203911634U CN 201420193024 U CN201420193024 U CN 201420193024U CN 203911634 U CN203911634 U CN 203911634U
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- CN
- China
- Prior art keywords
- brush
- hook
- electric
- spring
- electric brush
- 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 provides an electric brush assembly and a motor comprising the same. The electric brush assembly comprises an electric brush, an electric brush box and a spring, and the spring comprises two crimping parts and a connecting part for connecting the crimping parts. The connecting part of the spring and the electric brush are both accommodated in the electric brush box, and the electric brush comprises a contact end and a tail end far away from the contact end. The connecting part of the spring abuts against the tail end of the electric brush, and the two sides of one end of the electric brush box close to the contact end of the electric brush are equipped with hooks respectively. The crimping parts of the spring are connected with the corresponding hooks respectively, and the included angles between the hooks and the outer wall surface of the electric brush box are different. According to the utility model, the included angles between the baffles of the hooks and the outer wall of the electric brush box are different, so that the electric brush is attached to the inner wall at one side of the electric brush box when extending towards a commutator, and accordingly, the vibration of the electric brush is reduced, and the abnormal sound caused by the vibration of the electric brush is reduced.
Description
Technical field
The utility model relates to a kind of brush assembly of electric, relates in particular to a kind of brush assembly of electric for motor.
Background technology
Motor is a kind of calutron of realizing electric energy conversion or transmit according to the law of electromagnetic induction, and it is mainly divided into direct current machine and alternating current machine.In direct current machine or general brush motor, need to be provided with brush assembly of electric, brush assembly of electric comprises brush and brush box, thereby brush is contacted electric current is passed to commutator from brush in brush box and with commutator by spring fitting.
As shown in Figure 1, traditional brush assembly of electric comprises brush 2, brush box 1 and spring (not shown).Brush 2 is contained in brush box 1 by described spring.One end of brush box 1, two baffle plates 12 that extended outwardly, the end of each baffle plate 12 is provided with a hook 13.Baffle plate 12 is for two curled portion 3 of spring described in block, and in the time extending to commutator under the effect of brush 2 at described spring, brush 2 extends the end 11 of brush box 1, and hook 13, for hooking two curled portion 3 of described spring, makes described spring curling.Two baffle plates 12 equate with the outside wall surface angle of brush box 1.
But, in the brush assembly of electric of prior art, interior flexible flexibly in brush box 1 in order to ensure brush 2, between brush 2 and brush box 1, conventionally there is larger gap, between the side 21 of brush 2 and the inner surface of brush box 1, there is larger gap.Therefore, brush 2 in the course of the work, easily produces vibration, thereby causes abnormal sound.
In view of this, the utility model aims to provide a kind of novel stable and reduce the brush assembly of electric of abnormal sound.
Utility model content
The utility model provides a kind of brush assembly of electric, comprise brush, brush box and spring, described spring comprises two curled portion and the connecting portion that is connected described curled portion, the connecting portion of described spring and described brush are all contained in described brush box, described brush comprises contact jaw and the end away from contact jaw, the connecting portion of described spring is supported the end of described brush, the both sides of one end of the close brush contact jaw of described brush box are respectively equipped with a hook, the curled portion of described spring is connected with corresponding described hook respectively, its feature is: the angle forming between hook and described brush box outside wall surface described in each is unequal.
Preferably, described hook comprises one first hook and one second hook, described the first hook and described the second hook comprise that respectively a baffle plate being extended out by described brush box and is arranged at the hook portion of described baffle plate end, between the baffle plate of described the first hook and described brush box outside wall surface, form included angle A, between the baffle plate of described the second hook and described brush box outside wall surface, form included angle B, described included angle A and described included angle B are all greater than 90 degree and are less than 180 degree.
Preferably, the absolute value of the difference of described included angle A and described included angle B is greater than 0 degree and is less than 30 degree.
Preferably, described included angle A is 120 degree, and described included angle B is 105 degree.
Preferably, described brush box comprises two side, and each baffle plate extends from a respective side walls, and the junction of each plate washer and respective side walls offers an opening.
Preferably, between described baffle plate and corresponding described hook portion, form breach.
Preferably, described spring is a constant force spring.
The utility model also provides a kind of motor, comprise stator and rotor, the winding that described rotor comprises commutator, is electrically connected with commutator, its feature is, described motor also comprises brush assembly of electric as above, the contact jaw of the brush of described brush assembly of electric and commutator sliding contact, thus power to motor winding.
Positive progressive effect of the present utility model is: the utility model is set to different by the angle between baffle plate and the brush box outer wall of hook, make brush in the time that commutator extends and a side inwall laminating of brush box, thereby reduce brush chattering, reduce the abnormal sound causing due to brush chattering.The motor with described brush assembly of electric has higher stability, can eliminate the abnormal sound in motor moderating process after power-off.
In order further to understand feature of the present utility model and technology contents, refer to following about detailed description of the present utility model and accompanying drawing, but institute's accompanying drawing only provide with reference to and explanation use, be not used for the utility model to be limited.
Brief description of the drawings
Fig. 1 is the structural representation of prior art center brush assembly.
Fig. 2 is the structural representation of the utility model brush assembly of electric.
Fig. 3 is the structural representation of the utility model center brush box.
Fig. 4 is the perspective view of the utility model brush assembly of electric.
Embodiment
Below in conjunction with accompanying drawing, by embodiment of the present utility model is described in detail, will make the technical solution of the utility model and other beneficial effects apparent.Accompanying drawing only provides reference and explanation use, is not used for the utility model to be limited.The size showing in accompanying drawing is only used to be convenient to clear description, and does not limit proportionate relationship.
As in Figure 2-4, the utility model discloses a kind of brush assembly of electric, comprise brush 5, brush box 4 and spring 6.Wherein, in the present embodiment, brush box 4 is hollow strip.Brush 5 comprises contact jaw 52 and the end 51 away from contact jaw 52, and described spring is constant force spring, comprises two curled portion 61 and the U-shaped connecting portion 62 that is connected curled portion 61.The connecting portion 62 of spring 6 is supported the end 51 of brush 5, and the connecting portion 62 of described spring is contained in (as shown in Figure 4) in brush box 4 together with brush 5.The both sides of one end 41 of the contact jaw 52 of the close brush 5 of brush box 4 are respectively equipped with a hook.The curled portion 61 of described spring is connected with corresponding described hook respectively.Preferably, described hook comprises that one first hook 43 and one second hook the 43 ', the first hook 43 and the second hook 43 ' comprise that respectively a baffle plate being extended out by brush box 4 sidewalls 431,431 ' and establishes the hook portion 432,432 ' as for baffle plate 431,431 ' end.Particularly, offer respectively an opening 42,42 ' in the two side of one end of brush box 4, described brush box 4 is copper tubular structure, the edge of opening 42 baffle plate 421 that extended outwardly, the edge of the opening 42 ' baffle plate 421 ' that extended outwardly.The utility model utilizes opening 42,42 ' material itself to make baffle plate 421,421 ', simple in structure and easy to make.On baffle plate 421,421 ', form respectively a hook portion 432,432 '.Baffle plate 421,421 ' and corresponding hook portion 432,432 ' between form breach 433,433 ', insert and corresponding hook portion stretched in curled portion 61 for the curled portion 61 of spring.
Further, between baffle plate 431 and the outside wall surface of brush box 4, form included angle A, between baffle plate 431 ' and the outside wall surface of brush box 4, form included angle B, included angle A and included angle B are all greater than 90 degree and are less than 180 degree.Particularly preferably, the absolute value of the difference of included angle A and included angle B is greater than 0 degree and is less than 30 degree.In the present embodiment, included angle A is 120 degree, and included angle B is 105 degree.
As shown in Figure 4, described brush assembly of electric in use, the part that is straightened of two curled portion 61 of described spring has curling trend, thereby make the connecting portion of spring apply the elastic force towards contact jaw 52 to the end 51 of brush 5, the contact jaw of brush 5 52 is pushed out to brush box 4 outsides, for the commutator segment sliding contact of engine commutator.Because the angle of included angle A and included angle B is unequal, in the time that brush 5 extends to approach commutator (not shown) along the inwall of brush box 4, have compared with the spring curled portion 61 at the included angle A place of wide-angle one side of brush 5 is applied to a larger thrust, the spring curled portion 61 at the corresponding included angle B place with smaller angle applies a less thrust to the another side of brush 5.Under these two unequal thrust, larger thrust is resisted against on the inwall of brush box 4 side 53 of brush 5, so just can effectively reduce the vibration that brush 5 produces in extension process, and reduces the abnormal sound by generation of vibration.
The utility model also provides a kind of motor, comprises stator and rotor, the winding that described rotor comprises commutator and is electrically connected with commutator.Described motor also comprises brush assembly of electric as above, contact jaw 52 and the commutator sliding contact of the brush 5 of described brush assembly of electric, thus power to motor winding.Certainly, motor described in the utility model can be any motor that need to use brush assembly of electric, as general-purpose machine, U-shaped motor, permanent magnet DC motor etc.
In the present embodiment, brush 5 is preferably carbon brush, certainly, also can be made up of other materials.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any amendments of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (8)
1. a brush assembly of electric, comprise brush, brush box and spring, described spring comprises two curled portion and the connecting portion that is connected described curled portion, the connecting portion of described spring and described brush are all contained in described brush box, described brush comprises contact jaw and the end away from contact jaw, the connecting portion of described spring is supported the end of described brush, the both sides of one end of the close brush contact jaw of described brush box are respectively equipped with a hook, the curled portion of described spring is connected with corresponding described hook respectively, it is characterized in that: the angle forming between hook and described brush box outside wall surface described in each is unequal.
2. brush assembly of electric as claimed in claim 1, it is characterized in that, described hook comprises one first hook and one second hook, described the first hook and described the second hook comprise that respectively a baffle plate being extended out by described brush box and is arranged at the hook portion of described baffle plate end, between the baffle plate of described the first hook and described brush box outside wall surface, form included angle A, between the baffle plate of described the second hook and described brush box outside wall surface, form included angle B, described included angle A and described included angle B are all greater than 90 degree and are less than 180 degree.
3. brush assembly of electric as claimed in claim 2, is characterized in that, the absolute value of the difference of described included angle A and described included angle B is greater than 0 degree and is less than 30 degree.
4. brush assembly of electric as claimed in claim 3, is characterized in that, described included angle A is 120 degree, and described included angle B is 105 degree.
5. brush assembly of electric as claimed in claim 2, is characterized in that, described brush box comprises two side, and each baffle plate extends from a respective side walls, and the junction of each plate washer and respective side walls offers an opening.
6. brush assembly of electric as claimed in claim 2, is characterized in that, between described baffle plate and corresponding described hook portion, forms breach.
7. the brush assembly of electric as described in claim 1-6 any one, is characterized in that, described spring is a constant force spring.
8. a motor, comprise stator and rotor, the winding that described rotor comprises commutator, is electrically connected with commutator, it is characterized in that, described motor also comprises the brush assembly of electric as described in claim 1-7 any one, the contact jaw of the brush of described brush assembly of electric and commutator sliding contact, thus power to motor winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420193024.9U CN203911634U (en) | 2014-04-18 | 2014-04-18 | Electric brush assembly and motor comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420193024.9U CN203911634U (en) | 2014-04-18 | 2014-04-18 | Electric brush assembly and motor comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203911634U true CN203911634U (en) | 2014-10-29 |
Family
ID=51785880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420193024.9U Expired - Fee Related CN203911634U (en) | 2014-04-18 | 2014-04-18 | Electric brush assembly and motor comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203911634U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105099050A (en) * | 2014-04-18 | 2015-11-25 | 德昌电机(深圳)有限公司 | Electric brush assembly and motor comprising same |
-
2014
- 2014-04-18 CN CN201420193024.9U patent/CN203911634U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105099050A (en) * | 2014-04-18 | 2015-11-25 | 德昌电机(深圳)有限公司 | Electric brush assembly and motor comprising same |
| CN105099050B (en) * | 2014-04-18 | 2020-02-18 | 德昌电机(深圳)有限公司 | Brush subassembly reaches motor including it |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20210418 |