CN213043533U - Low-noise motor - Google Patents
Low-noise motor Download PDFInfo
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- CN213043533U CN213043533U CN202022358578.8U CN202022358578U CN213043533U CN 213043533 U CN213043533 U CN 213043533U CN 202022358578 U CN202022358578 U CN 202022358578U CN 213043533 U CN213043533 U CN 213043533U
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- rear cover
- motor
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- noise
- sheet
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Abstract
The utility model relates to a technical field that makes an uproar falls in the motor especially relates to a novel brush motor of low noise. The low-noise motor comprises a housing and a rear cover, wherein the housing comprises a top cover and a side wall vertically extending along the periphery of the top cover, the edge of the rear cover is connected with the side wall, a magnetic stripe is fixed on the inner surface of the side wall, the low-noise motor further comprises a rotor, the rotor comprises a motor shaft, a punching sheet, an insulating sheet, a commutator, a piezoresistor, an electric brush, an oil blocking sheet and a middle plate, the insulating sheet is provided with a fastening pipe, a fixing groove is formed in the fastening pipe, and the edge of the fixing groove is a non-chamfer edge. Low noise motor, through the brand-new design of inner structure and the accurate cooperation of each part, reduced the interference position that produces the running noise to each part is connected the fastening, has reduced the resonance noise, thereby greatly reduced the noise when motor operates.
Description
Technical Field
The utility model relates to a technical field that makes an uproar falls in the motor especially relates to a novel brush motor of low noise.
Background
The traditional small motor has short service life and higher running noise, and is difficult to meet the requirements of application environments such as automobile spare and accessory parts on service life and noise. The reasons for the noise generated by the operation of the micro motor include motor resonance, structural wind noise, poor assembly, electrical noise, etc.
SUMMERY OF THE UTILITY MODEL
Based on this, there is a need to provide a new motor structure to solve the noise problem caused by the internal structure of the motor.
A low-noise motor comprises a housing and a rear cover, wherein the housing comprises a top cover and a side wall vertically extending along the periphery of the top cover, the edge of the rear cover is connected with the side wall, a magnetic stripe is fixed on the inner surface of the side wall, the low-noise motor also comprises a rotor, the rotor comprises a motor shaft, a punching sheet, an insulating sheet, a commutator, a piezoresistor, an electric brush, an oil blocking sheet and a middle plate, the motor shaft is arranged in the housing by penetrating the center of the top cover, a housing bearing is arranged between the front end of the motor shaft and the inner surface of the top cover, the motor shaft is sequentially fastened and sleeved with the punching sheet, the commutator and the electric brush, a plurality of winding grooves are formed in the punching sheet at equal intervals, the insulating sheet is arranged on two sides of the punching sheet, the piezoresistor is connected to the outer, the middle plate is fixed on the rear cover, the top end of the commutator is provided with the oil baffle piece, the tail end of the motor shaft is connected with a rear cover bearing, the shell bearing and the rear cover bearing are positioned on the same axis,
the rear cover is provided with an accommodating groove, the rear cover bearing is fixed in the accommodating groove, and a stopping piece is arranged at the abutting position of the top end of the rear cover bearing and the rear cover; the insulating piece is equipped with the fastening pipe, the fixed slot has been seted up to the fastening pipe, the border of fixed slot is for not having the chamfer border.
Furthermore, the bottom of commutator be provided with fixed slot matched with fixed strip, the border of fixed strip is for not having the chamfer border.
Further, the insulating piece includes insulating panel and a plurality of insulating inner panel, insulating panel has seted up a plurality of interior notches along peripheral equidistance, insulating inner panel is followed interior notch extends perpendicularly and hugs closely the wire winding groove of punching the piece.
Further, the number of the winding grooves is 3, and the number of the inner notches is 3.
Low noise motor, through the brand-new design of inner structure and the accurate cooperation of each part, reduced the interference position that produces the running noise to each part is connected the fastening, has reduced the resonance noise, thereby greatly reduced the noise when motor operates.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a low noise motor according to a preferred embodiment of the present invention.
FIG. 2 is a side view of an insulating sheet in the example.
Fig. 3 is a schematic perspective view of the insulation sheet shown in fig. 2.
Fig. 4 is a schematic structural diagram of the punching sheet in the embodiment.
In the figure:
1-machine shell, 2-rear cover, 3-top cover, 4-side wall, 5-magnetic strip, 6-motor shaft, 7-punching sheet, 8-insulation sheet, 9-commutator, 10-piezoresistor, 11-electric brush, 12-oil baffle sheet, 13-middle plate, 14-machine shell bearing, 15-winding groove, 16-holding groove, 17-stop sheet, 18-fastening tube, 19-fixing groove, 20-insulation panel, 21-insulation inner plate, 22-inner notch, and 23-rear cover bearing.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.
As shown in fig. 1, 2, 3 and 4, a low noise motor is provided, which includes a housing 1 and a rear cover 2, wherein the housing 1 includes a top cover 3 and a sidewall 4 extending vertically along the periphery of the top cover 3, the edge of the rear cover 2 is connected with the sidewall 4, a magnetic stripe 5 is fixed on the inner surface of the sidewall 4, the low noise motor further includes a rotor, the rotor includes a motor shaft 6, a punching sheet 7, an insulating sheet 8, a commutator 9, a piezoresistor 10, an electric brush 11, an oil baffle sheet 12 and a middle plate 13, the motor shaft 6 is arranged inside the housing 1 through the center of the top cover 3, a housing bearing 14 is arranged between the front end of the motor shaft 6 and the inner surface of the top cover 3, the motor shaft 6 is sequentially fastened and sleeved with the punching sheet 7, the commutator 9 and the electric brush 11, a plurality of winding grooves 15 are equidistantly arranged on the punching sheet 7, the insulating sheets 8 are respectively arranged on two sides, the piezoresistor 10 is connected to the outer side of the commutator 9, the electric brush 11 is arranged on the middle plate 13 and coupled with the commutator 9, the middle plate 13 is fixed on the rear cover 2, the top end of the commutator 9 is provided with the oil blocking piece 12, the tail end of the motor shaft 6 is connected with a rear cover bearing 23, the housing bearing 14 and the rear cover bearing 23 are positioned on the same axis, the rear cover 2 is provided with an accommodating groove 16, the rear cover bearing 23 is fixed on the accommodating groove 16, and the abutting part of the top end of the rear cover bearing 23 and the rear cover 2 is provided with a blocking piece 17; insulating piece 8 is equipped with fastening pipe 18, fastening pipe 18 has seted up fixed slot 19, the border of fixed slot 19 is for not having the chamfer border.
Specifically, a fixing strip (not shown in the figure) matched with the fixing groove 19 is arranged at the bottom end of the commutator 9, and the edge of the fixing strip is a non-chamfer edge. When the commutator 9 is tightly matched with the insulating sheet 8, the joint is smooth, thereby avoiding the condition that the uneven part generates noise when running at high speed and greatly reducing the running noise.
Further, with reference to fig. 2 and 3, the insulating sheet 8 includes an insulating panel 20 and a plurality of insulating inner plates 21, a plurality of inner notches 22 are formed along the insulating panel 20 at equal intervals, and the insulating inner plates 21 extend vertically and are tightly attached to the winding grooves 15 of the punching sheet 7 along the inner notches 22. Two blocks of insulating pieces 8 can form complete parcel to punching sheet 7 around, have satisfied wire winding insulating demand on the one hand, and on the other hand has promoted holistic fastening nature to reduce the possibility that the resonance takes place.
Further, in conjunction with fig. 3 and 4, the winding grooves 15 are 3 in number, and the inner recesses 22 are 3 in number.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; the present invention can be smoothly implemented by those skilled in the art according to the drawings and the above description; however, those skilled in the art should understand that changes, modifications and variations that are equivalent to those of the above-described embodiments may be made without departing from the scope of the present invention; meanwhile, any changes, modifications, evolutions, etc. of the above embodiments, which are equivalent to the actual techniques of the present invention, still belong to the protection scope of the technical solution of the present invention.
Claims (4)
1. A low-noise motor comprises a housing and a rear cover, wherein the housing comprises a top cover and a side wall vertically extending along the periphery of the top cover, the edge of the rear cover is connected with the side wall, and a magnetic strip is fixed on the inner surface of the side wall, and the low-noise motor is characterized by further comprising a rotor, wherein the rotor comprises a motor shaft, a punching sheet, an insulating sheet, a commutator, piezoresistors, an electric brush, an oil baffle sheet and a middle plate, the motor shaft is arranged in the housing by penetrating the center of the top cover, a housing bearing is arranged between the front end of the motor shaft and the inner surface of the top cover, the motor shaft is sequentially fastened and sleeved with the punching sheet, the commutator and the electric brush, a plurality of winding grooves are formed in the punching sheet at equal intervals, the insulating sheet is arranged on two sides of the punching sheet, the piezoresistors are connected to the, the middle plate is fixed on the rear cover, the top end of the commutator is provided with the oil baffle piece, the tail end of the motor shaft is connected with a rear cover bearing, the shell bearing and the rear cover bearing are positioned on the same axis, the rear cover is provided with a containing groove, the rear cover bearing is fixed in the containing groove, and the abutting part of the top end of the rear cover bearing and the rear cover is provided with a stop piece; the insulating piece is equipped with the fastening pipe, the fixed slot has been seted up to the fastening pipe, the border of fixed slot is for not having the chamfer border.
2. The low noise motor according to claim 1, wherein: the bottom of commutator be provided with fixed slot matched with fixed bar, the border of fixed bar is for not having the chamfer border.
3. The low noise motor according to claim 1, wherein: the insulating piece includes insulating panel and a plurality of insulating inner panel, insulating panel has seted up a plurality of interior notches along peripheral equidistance, insulating inner panel is followed interior notch extends perpendicularly and hugs closely the wire winding groove of punching the piece.
4. The low noise motor according to claim 3, wherein: the number of the winding grooves is 3, and the number of the inner notches is 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022358578.8U CN213043533U (en) | 2020-10-21 | 2020-10-21 | Low-noise motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022358578.8U CN213043533U (en) | 2020-10-21 | 2020-10-21 | Low-noise motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213043533U true CN213043533U (en) | 2021-04-23 |
Family
ID=75536257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022358578.8U Active CN213043533U (en) | 2020-10-21 | 2020-10-21 | Low-noise motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213043533U (en) |
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2020
- 2020-10-21 CN CN202022358578.8U patent/CN213043533U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |