CN101820198B - End cover set of brush direct current motor - Google Patents
End cover set of brush direct current motor Download PDFInfo
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- CN101820198B CN101820198B CN2009101055759A CN200910105575A CN101820198B CN 101820198 B CN101820198 B CN 101820198B CN 2009101055759 A CN2009101055759 A CN 2009101055759A CN 200910105575 A CN200910105575 A CN 200910105575A CN 101820198 B CN101820198 B CN 101820198B
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- brush
- acting force
- brush sheet
- force arm
- plastic cover
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Abstract
The invention relates to an end cover set of a brush direct current motor. The end cover set comprises an electric brush and a plastic cover, wherein the plastic cover is provided with a fixed position and a lead end; the electric brush comprises an electrically conductive part; the electrically conductive part is connected with the lead end and bends and extends inwards to form an acting force arm; the acting force arm is fixed at the fixed position and bends and extends inwards to form a brush sheet part. The end cover set is characterized in that: the end part of the brush sheet part bends inwards; and the included angle between the broken line on the bending part and the extending central line of the brush sheet part is less than 90 degrees. The end cover set of the motor has the advantages of effectively overcoming the defects of the buzzing phenomenon, the speed reduction and the like generated by resonance of the electric brush, enhancing the irregular deformation force of the brush sheet part, making the installation of the metal brush and the phase exchange of the motor simpler and more convenient and effectively improving the performance difference of the positive and negative rotation of the motor by designing a lead installation point of the plastic cover and an installation structure of the electric brush according to the structure of the electric brush.
Description
Technical field
The present invention relates to a kind of direct current machine, relate in particular to a kind of brush direct current machine end cap group that has.
Background technology
At present, the end cap group of domestic drag cup brush motor generally comprises on metallic brush and the plastic cover, and wherein plastic cover is circular, and the plastic cover edge is provided with two brush fixed bits, and the line of two fixed bits is through the central point of circular plastic cover.Two brushes are fixed on this fixed bit, contact with lead on being installed in plastic cover.Wherein, the brush structural representation is generally as shown in Figure 1, and its unfolding assumption diagram is as shown in Figure 2, and it is installed in structure chart on the plastic cement end cap shown in Fig. 3 A, Fig. 3 B.It comprises the conductive part 101 that contacts with lead, and conductive part extends and bending, forms the acting force arm 102 of brush sheet portion, and its bending place is designated as first broken line, and acting force arm contacts with fixed bit brush is fixed on the plastic cover.Acting force arm 102 is extended and bending, forms brush sheet portion 103, and its bending place is designated as second broken line.The end bending of metallic brush sheet portion, its bending place is designated as tri linear.In the present brush; First broken line, second broken line and tri linear are parallel to each other; Metallic brush sheet portion part does not have between the first brush sheet and the second brush sheet in the prior art to connect by being parallel to each other and the first brush sheet at regular intervals and the second brush sheet are formed, causes brush when installing and turn round; Very easily be out of shape, influence the operate as normal of motor.And the angle after the bending of the first brush sheet and the second brush sheet is in same two dimensional surface, and when brush trembleed, two brush sheet portions were easy to generate resonance, cause motor to produce buzzer because of resonance.
In the present end cap group, when brush was installed on the plastic cover, acting force arm 102 was installed on the fixed bit, and acting force arm is perpendicular to the center line through two fixed bits, and an end of acting force arm 102 is a conductive part, and the other end is brush sheet portion 103.For guaranteeing effective work of brush, it is longer that its acting force arm need design.Like this, be easy to generate fast phenomenon under the high rotating speed of motor.
In addition, according to the architectural feature of present brush, on its plastic cover that matches two brush fixed bits can only be set.Therefore, when the motor commutation, be adaptive motor positive and inverse mechanism, need to adopt the plastic cover of different structure, cause the installation trouble of end cap group, production efficiency is low.
Therefore, prior art haves much room for improvement and improves.
Summary of the invention
The technical problem that the present invention will solve is, the above-mentioned defective to the brush direct current machine is arranged provides a kind of installation that can simplify electric motor end cap group metallic brush, and makes motor be difficult for falling speed, and brush sheet portion is on-deformable to have brush direct current machine end cap group.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of end cap group that the brush direct current machine is arranged, comprise brush (200) and plastic cover (300), said plastic cover is provided with fixed bit (301) and conductor wire end (302); Said brush (200) comprises conductive part (201), and said conductive part (201) connects said conductor wire end (302); Said conductive part (201) bends inwards and extends to form acting force arm (202), and said acting force arm (202) is fixed in said fixed bit (301); Said acting force arm (202) bends inwards and extends to form brush sheet portion (203), and wherein, said brush sheet portion (203) end bends inwards, and the angle that the broken line of this bending place and brush sheet portion stretch between the center line is spent less than 90.
End cap group of the present invention, wherein, the angle that the conductive part (201) of said brush (200) extends after the bending that is bent to form said acting force arm (202) is spent greater than 90.
End cap group of the present invention, wherein, said acting force arm (202) is extended the bending angle that is bent to form said brush sheet portion (203), and the conductive part (201) of adaptive said brush (200) extends the bending angle that is bent to form said acting force arm (202).
End cap group of the present invention, wherein, the angle that said acting force arm (202) is extended after the bending that is bent to form said brush sheet portion (203) is spent less than 90 greater than 45 degree.
End cap group of the present invention, wherein, said brush sheet portion (203) is made up of the first brush sheet (213) that is parallel to each other and the second brush sheet (223), is provided with intercell connector (233) between the said first brush sheet (213) and the second brush sheet (223).
End cap group of the present invention wherein, is provided with amortisseur bar on the said first brush sheet and the second brush sheet.
End cap group of the present invention, wherein, the center line of said plastic cover (300) upper edge plastic cover is symmetrically arranged with two conductor wire end (302); The both sides of each conductor wire end (302) respectively are provided with said fixed bit (301); Said fixed bit (301) is a bathtub construction, and the vertical line angulation of its bearing of trend and said center line and the conductive part (201) of said brush (200) equate with angle between the said acting force arm (202).
There is the brush direct current machine to compare with existing; Electric motor end cap group of the present invention; Through improving the angle of bend of metallic brush sheet portion end, shorten the acting force arm of brush sheet portion, and between two brush sheet portions, intercell connector is set; Efficiently solve buzzing phenomenon that brush resonance produces, fall shortcoming such as speed, and improved the irregular deformation power of brush plate portion.While makes the installation of metallic brush and motor commutation easier, and has increased the elasticity of brush according to the lead mounting points and the brush mounting structure of the structural design plastic cover of brush, has effectively improved the performance difference of motor positive and inverse.
Description of drawings
To combine accompanying drawing and embodiment that the present invention is described further below, in the accompanying drawing:
Fig. 1 is the structural representation that brush direct current machine brush is arranged of the prior art;
Fig. 2 is the unfolding assumption diagram that brush direct current machine brush is arranged of the prior art;
Fig. 3 A, Fig. 3 B of the prior artly have that brush direct current machine end cap group brush is pressed commentaries on classics, inversion mode is installed in the structural representation on the plastic cover;
Fig. 4 of the present inventionly has brush direct current machine end cap group brush to be installed in the structural representation on the plastic cover;
Fig. 5 is the structural representation that brush direct current machine brush is arranged of the present invention;
Fig. 6 is the brush deployed configuration sketch map that brush direct current machine end cap group is arranged of the present invention;
Fig. 7 is the enlarged diagram of A among Fig. 5;
Fig. 8 is the plastic cover structure chart that brush direct current machine end cap group is arranged of the present invention.
Embodiment
Below in conjunction with diagram, the preferred embodiments of the present invention are described in detail.
The brush direct current machine end cap group general structure that has of the embodiment of the invention shows that as shown in Figure 4 all the other structures of motor do not illustrate in the drawings.As can be seen from Figure 4, mainly be made up of brush 200 and plastic cover 300 brush direct current machine end cap group, plastic cover is provided with fixed bit 301 and conductor wire end 302, and fixed bit 301 is used for fixing brush 200.Conductor wire end 301 is fixed with lead, is used for to the brush energising that is fixed on the plastic cover.
Fig. 5 shows the structural representation of the brush 200 among Fig. 4, and it is formed by bullion bending, comprises conductive part 201, acting force arm 202 and brush sheet portion 203.Conductive part 201 be used for be fixed on plastic cover 300 on lead contact energising, conductive part 201 extends also bending, forms acting force arm 202, its bending place is designated as first broken line.Acting force arm is used for being connected with fixed bit, so that brush is fixed on the plastic cover.Acting force arm 202 is extended and bending, forms brush sheet portion 203, and its bending place is designated as second broken line.Metallic brush sheet portion end bends once more, and its bending place is designated as tri linear.In the embodiment of the invention, first broken line and second broken line are parallel to each other, and the elongated end of first or second broken line and tri linear intersects and has angle.Fig. 6 shows the deployed configuration sketch map of the brush of the embodiment of the invention, and as can be seen from the figure, metallic brush sheet portion is made up of the be parallel to each other first brush sheet 213 also at regular intervals and the second brush sheet 223.See the brush structure from the side, the angle after the first brush sheet of its brush sheet portion and the bending of the second brush sheet is not in same two dimensional surface, and the enlarged diagram of bending part 205 is as shown in Figure 7.Therefore, when trembleing in brush plate portion, each self-excited oscillation of two brush sheet portions, and can not produce covibration, reduced the buzzing phenomenon that motor brush produces because of resonance greatly.
In the embodiment of the invention, as shown in Figure 6, be provided with intercell connector 233 between the first brush sheet 213 of brush sheet portion 203 and the second brush sheet 223.Brush has effectively been avoided the harmful effect that the distortion of monolithic brush causes when assembling when installing and turn round like this, has increased substantially the irregular deformation power of brush plate portion.
In the embodiment of the invention, as shown in Figure 4, brush is provided with amortisseur bar 204; Therefore can effectively increase the elastic force of metallic brush; Make the phase changer of the more effective contact motor of metallic brush ability, motor also can produce stable moment under high rotating speed, reduced the performance difference of motor positive and inverse.
As shown in Figure 5, under the situation of high rotating speed running, produce fast phenomenon for effectively avoiding motor, shortened the acting force arm of brush in the embodiment of the invention.As can be seen from Figure 5, the conductive part 201 of brush 200 extends the angle that the angle that is bent to form after first of acting force arm 202 bends is preferably greater than 90 degree.Acting force arm 202 is extended the size of the angle after then adaptive first bending of angle after second bending that is bent to form brush sheet portion 203, is preferably greater than the angle of 45 degree less than 90 degree.The brush that could guarantee like this to shorten after the acting force arm is installed on the plastic cover.
In the embodiment of the invention, the structural representation that brush 200 is installed and used on plastic cover 300 is as shown in Figure 4.Plastic cover 300 upper edge center lines are provided with two conductor wire end 302, and each conductor wire end 302 both sides all is provided with fixed bit 301.Fixed bit 301 is a flute profile, the plastic cement end cover structure figure that its concrete structure is as shown in Figure 8.Brush 200 is installed in 300 last times of plastic cover, and conductive part 201 is perpendicular to the center line at the line place of two conductor wire end 302.The wherein conductive part 201 of the adaptive brush 200 of corner dimension between the fixed bit 301 on conductor wire end 302 and both sides and the angle between the acting force arm 202.
The plastic cover structure of present embodiment design makes the installation of metallic brush easier; Only need with same brush from one fixedly screens be installed to the fixed bit of another side; Can accomplish the conversion of motor positive and inverse, and need not change plastic cover, improve operating efficiency greatly.
In sum; Electric motor end cap group of the present invention; Through improving the angle of bend of metallic brush sheet portion end, shorten the acting force arm of brush sheet portion, and between two brush sheet portions, intercell connector is set; Efficiently solve buzzing phenomenon that brush resonance produces, fall shortcoming such as speed, and improved the irregular deformation power of brush plate portion.While makes the installation of metallic brush and motor commutation easier, and has increased the elasticity of brush according to the lead mounting points and the brush mounting structure of the structural design plastic cover of brush, has effectively improved the performance difference of motor positive and inverse.
Should be understood that, concerning those of ordinary skills, can improve or conversion, and all these improvement and conversion all should belong to the protection range of accompanying claims of the present invention according to above-mentioned explanation.
Claims (6)
1. the end cap group that the brush direct current machine is arranged comprises brush (200) and plastic cover (300), and said plastic cover is provided with fixed bit (301) and conductor wire end (302); Said brush (200) comprises conductive part (201), and said conductive part (201) connects said conductor wire end (302); Said conductive part (201) bends inwards and extends to form acting force arm (202), and said acting force arm (202) is fixed in said fixed bit (301); Said acting force arm (202) bends inwards and extends to form brush sheet portion (203), it is characterized in that said brush sheet portion (203) end bends inwards, and the angle that the broken line of this bending place and brush sheet portion stretch between the center line is spent less than 90.
2. end cap group according to claim 1 is characterized in that, the conductive part (201) of said brush (200) and the angle between acting force arm (202) are greater than 90 degree.
3. end cap group according to claim 2 is characterized in that, said acting force arm (202) is spent less than 90 greater than 45 degree with the angle of said brush sheet portion (203).
4. end cap group according to claim 3 is characterized in that, said brush sheet portion (203) is made up of the first brush sheet (213) that is parallel to each other and the second brush sheet (223), is provided with intercell connector (233) between the said first brush sheet (213) and the second brush sheet (223).
5. end cap group according to claim 4 is characterized in that, is provided with amortisseur bar on the said first brush sheet and the second brush sheet.
6. end cap group according to claim 5 is characterized in that, the center line of said plastic cover (300) upper edge plastic cover is symmetrically arranged with two conductor wire end (302); The both sides of each conductor wire end (302) respectively are provided with said fixed bit (301); Said fixed bit (301) is a bathtub construction, and the vertical line angulation of its bearing of trend and said center line and the conductive part (201) of said brush (200) equate with angle between the said acting force arm (202).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101055759A CN101820198B (en) | 2009-02-26 | 2009-02-26 | End cover set of brush direct current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101055759A CN101820198B (en) | 2009-02-26 | 2009-02-26 | End cover set of brush direct current motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101820198A CN101820198A (en) | 2010-09-01 |
| CN101820198B true CN101820198B (en) | 2012-06-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101055759A Active CN101820198B (en) | 2009-02-26 | 2009-02-26 | End cover set of brush direct current motor |
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| Country | Link |
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| CN (1) | CN101820198B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324805B (en) * | 2011-08-17 | 2013-05-22 | 汕头市澄海区超力微电机有限公司 | Electric brush device of brush direct current micro motor |
| JP5898165B2 (en) | 2013-11-29 | 2016-04-06 | マブチモーター株式会社 | motor |
| JP2018110468A (en) * | 2016-12-28 | 2018-07-12 | マブチモーター株式会社 | Connecting method of flexible components |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001178083A (en) * | 1999-12-16 | 2001-06-29 | Shicoh Eng Co Ltd | Motor |
| CN1214507C (en) * | 2001-09-10 | 2005-08-10 | 三星电机株式会社 | Vibrating motor |
| CN201118378Y (en) * | 2007-08-24 | 2008-09-17 | 浙江省东阳市诚基电机有限公司 | Contact conductive structure for small vibration electromotor spring slice |
-
2009
- 2009-02-26 CN CN2009101055759A patent/CN101820198B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001178083A (en) * | 1999-12-16 | 2001-06-29 | Shicoh Eng Co Ltd | Motor |
| CN1214507C (en) * | 2001-09-10 | 2005-08-10 | 三星电机株式会社 | Vibrating motor |
| CN201118378Y (en) * | 2007-08-24 | 2008-09-17 | 浙江省东阳市诚基电机有限公司 | Contact conductive structure for small vibration electromotor spring slice |
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| Publication number | Publication date |
|---|---|
| CN101820198A (en) | 2010-09-01 |
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