CN203596486U - Low-noise electric brush - Google Patents
Low-noise electric brush Download PDFInfo
- Publication number
- CN203596486U CN203596486U CN201320794560.XU CN201320794560U CN203596486U CN 203596486 U CN203596486 U CN 203596486U CN 201320794560 U CN201320794560 U CN 201320794560U CN 203596486 U CN203596486 U CN 203596486U
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- CN
- China
- Prior art keywords
- wall
- brush
- electric brush
- arc
- outer contacting
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- 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 low-noise electric brush. The electric brush comprises an electric brush body and a wire which is in fixed electric connection with the electric brush; the electric brush body comprises mutually parallel upper and lower walls, and an outer contact wall is arranged between the outer end of the upper wall and the outer end of the lower wall; the tangent plane of the outer contact wall is arranged tilting to the upper wall or the lower wall; the cross section of the outer contact wall is arc-shaped; and multiple channels of protruding teeth whose cross sections are arc-shaped are uniformly up-down distributed on the arc-shaped oblique plane. The electric brush is advantageous in that a reversing ring of a motor is in good contact and cooperation with the electric brush and the motor runs with low noises.
Description
Technical field
The utility model relates to a kind of brush of low noise.
Background technology
Brush is the important composition parts of direct current machine and commutating machine, and it does sliding contact with commutative ring and form to be electrically connected.Existing brush generally is the rectangular structure that graphite material is made, and in use, is installed in brush carrier, relies on the spring in brush carrier to make the contact-making surface of brush keep electrically contacting being connected with the commutative ring of motor all the time.Because commutative ring is generally circularly, and the contact-making surface of brush is flat face, and the two is after motor has just assembled, between initial running-in period, the contact of the two is face contact, makes brush be subject to the contact resistance of commutative ring larger, may cause brush to be stuck in brush holder, spring cannot compress brush, and machine operation loses meaning, in addition, at the brush break-in initial stage, running noise of motor is very large, and easily occurs spark, and the commutator to motor or commutative ring produce damaging influence.
Summary of the invention
The purpose of this utility model is the shortcoming and defect existing in order to overcome prior art, and provides a kind of contact with the commutative ring of motor to work good, the brush of the low noise that running noise is low.
For achieving the above object, the technical solution of the utility model is the wire that includes brush body and be fixedly electrically connected with brush, described brush body include upper wall and the lower wall being parallel to each other and be arranged at upper wall and the outer end of lower wall between outer contacting wall, being inclined to set between the tangent plane of described outer contacting wall and upper wall or lower wall, and the cross section of this outer contacting wall is circular arc, this curve slope is evenly equipped with the double wedge that multiple tracks cross section is arc up and down.By this setting, in the time of the preliminary break-in of brush and commutative ring, only have the top of double wedge to carry out line with commutative ring and contact, thereby reduce the break-in initial stage, the contact resistance of brush, and in the period of adjustment, double wedge is polished gradually, and then forms the contact-making surface of stable brush.In addition, this setting, this outer contacting wall becomes above-mentioned curve slope setting, also makes the track of its contact more meet the contact condition of brush and commutative ring, further reduces the noise of its running, has improved the stability of machine operation.
Further arranging is that inclination angle between described outer contacting wall tangent plane and upper wall or lower wall is 60 °, and the cross section of described outer contacting wall is circular arc, and the radius of this circular arc is 15mm.By this setting, this parameter arranges, and relatively meets the rate of wear of electrographite brush, can make brush complete with commutative ring break-in quickly.
Further arrange is that the vertical sectional shape of described double wedge is zigzag.
Below in conjunction with specification drawings and specific embodiments, the utility model is described further.
Accompanying drawing explanation
Fig. 1 the utility model is execution mode front view specifically;
Fig. 2 the utility model embodiment upward view (omission conductor part);
Fig. 3 the utility model embodiment end view.
Embodiment
Below by embodiment, the utility model is specifically described, only for the utility model is further described, can not be interpreted as the restriction to the utility model protection range.
Embodiment of the present utility model as Figure 1-3, include brush body 1, and the wire 2 being fixedly electrically connected with brush, described brush body 1 include upper wall 11 and the lower wall 12 being parallel to each other and be arranged at upper wall 11 and the outer end of lower wall 12 between outer contacting wall 13, being inclined to set between the tangent plane 131 of described outer contacting wall 13 and upper wall or lower wall, this inclination angle is preferably 60 °, the cross section of this outer contacting wall 13 is circular arc, this arc radius is preferably 15mm, this curve slope of the present embodiment is evenly equipped with the double wedge 132 that multiple tracks cross section is arc up and down, the vertical sectional shape of described double wedge 132 is zigzag.
Claims (3)
1. the brush of a low noise, the wire that includes brush body and be fixedly electrically connected with brush, described brush body include upper wall and the lower wall being parallel to each other and be arranged at upper wall and the outer end of lower wall between outer contacting wall, it is characterized in that: being inclined to set between the tangent plane of described outer contacting wall and upper wall or lower wall, and the cross section of this outer contacting wall is circular arc, this curve slope is evenly equipped with the double wedge that multiple tracks cross section is arc up and down.
2. the brush of a kind of low noise according to claim 1, is characterized in that: the inclination angle between described outer contacting wall tangent plane and upper wall or lower wall is 60 °, and the arc radius of the cross section of described outer contacting wall is 15mm.
3. the brush of a kind of low noise according to claim 1, is characterized in that: the vertical sectional shape of described double wedge is zigzag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320794560.XU CN203596486U (en) | 2013-12-04 | 2013-12-04 | Low-noise electric brush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320794560.XU CN203596486U (en) | 2013-12-04 | 2013-12-04 | Low-noise electric brush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203596486U true CN203596486U (en) | 2014-05-14 |
Family
ID=50677345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320794560.XU Expired - Fee Related CN203596486U (en) | 2013-12-04 | 2013-12-04 | Low-noise electric brush |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203596486U (en) |
-
2013
- 2013-12-04 CN CN201320794560.XU patent/CN203596486U/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: 20140514 Termination date: 20161204 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |