CN116846154B - Self-cleaning brush motor and working method - Google Patents
Self-cleaning brush motor and working method Download PDFInfo
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- CN116846154B CN116846154B CN202311119259.3A CN202311119259A CN116846154B CN 116846154 B CN116846154 B CN 116846154B CN 202311119259 A CN202311119259 A CN 202311119259A CN 116846154 B CN116846154 B CN 116846154B
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- cleaning
- carbon powder
- brush
- unit
- motor shaft
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- 238000004140 cleaning Methods 0.000 title claims abstract description 217
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 242
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 227
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 83
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 14
- 229910052802 copper Inorganic materials 0.000 claims description 14
- 239000010949 copper Substances 0.000 claims description 14
- 238000000429 assembly Methods 0.000 claims description 7
- 230000000712 assembly Effects 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 230000001050 lubricating effect Effects 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 239000000428 dust Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/14—Means for supporting or protecting brushes or brush holders
- H02K5/143—Means for supporting or protecting brushes or brush holders for cooperation with commutators
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The application belongs to the technical field of brush motors, and in particular relates to a self-cleaning brush motor and a working method thereof, wherein the self-cleaning brush motor comprises the following components: when the motor is started, the carbon powder cleaning mechanism pushes carbon powder accumulated below the carbon brush mechanism into the bearing chamber until the carbon powder cleaning mechanism and the carbon brush mechanism circumferentially prop against the motor shaft, and the carbon powder cleaning mechanism lubricates when prop against the motor shaft; when the motor is stopped, the carbon powder cleaning mechanism props against the reversing mechanism to clean carbon powder in and on the surface of a channel on the reversing mechanism, and the carbon powder cleaning mechanism prevents the motor shaft from continuing to rotate; the application has the effects of lubricating the rotating bearing, eliminating offset caused by uneven stress of the motor shaft, enabling the motor shaft to realize stable rotation, delaying the surface abrasion of the carbon brush mechanism, reducing the influence of carbon powder on the service life of the carbon brush mechanism and the reversing mechanism, improving the safety of the reversing mechanism and other parts in the shell, and simultaneously, the carbon powder cleaning mechanism also has the effect of braking the motor shaft.
Description
Technical Field
The application belongs to the technical field of brush motors, and particularly relates to a self-cleaning brush motor and a working method thereof.
Background
Carbon brush and commutator contact in traditional brush motor, and in brush motor operation, the carbon brush is consumed and produces the carbon dust and pile up on the commutator, and the resistivity of carbon dust changes, not only can influence the electric energy transmission efficiency between carbon brush and the commutator, and the carbon dust of pile up simultaneously can influence the life of carbon brush, commutator for the surface abrasion of carbon brush, and the carbon dust if the channel plugs up in the commutator can lead to the commutator short circuit and can't its switching-over effect.
And the carbon powder consumed from the carbon brush can be accumulated in the shell, and other parts in the brush motor can be short-circuited, so that the service life of the brush motor is influenced.
Therefore, there is a need to develop a new self-cleaning brush motor and working method to solve the above problems.
Disclosure of Invention
The application aims to provide a self-cleaning brush motor and a working method thereof.
In order to solve the technical problems, the application provides a self-cleaning brush motor, which comprises: the device comprises a shell, a motor shaft, a coil mechanism, a reversing mechanism, a carbon brush mechanism, a carbon powder cleaning mechanism and a rotating bearing, wherein the motor shaft, the coil mechanism, the reversing mechanism, the carbon brush mechanism, the carbon powder cleaning mechanism and the rotating bearing are arranged in the shell; the coil mechanism and the reversing mechanism are sleeved on a motor shaft, the coil mechanism is positioned above the reversing mechanism, the carbon brush mechanism and the carbon powder cleaning mechanism are positioned at the outer side of the reversing mechanism, the rotating bearing is positioned in a bearing chamber of the shell, the bearing chamber is positioned below the carbon powder cleaning mechanism, and the motor shaft penetrates through the carbon brush mechanism, the carbon powder cleaning mechanism and the rotating bearing; when the motor is started, a magnetic field formed by the coil mechanism pushes the carbon powder cleaning mechanism to act, the carbon powder cleaning mechanism pushes carbon powder accumulated below the carbon brush mechanism into a bearing chamber so as to lubricate the rotating bearing until the carbon powder cleaning mechanism and the carbon brush mechanism circumferentially support against a motor shaft so as to eliminate the offset of the motor shaft, and the carbon powder cleaning mechanism lubricates when supporting against the motor shaft; when the motor is stopped, the carbon powder cleaning mechanism resets, the carbon powder cleaning mechanism props against the reversing mechanism to clean carbon powder in and on the surface of a channel on the reversing mechanism, and the carbon powder cleaning mechanism prevents the motor shaft from continuing to rotate.
Further, a plurality of virtual grooves are formed in the coil mechanism.
Further, PTC is arranged in an end cover of the shell, and copper sheets are arranged on the outer side of the inductor in the end cover; the rotating bearing is riveted in the bearing chamber and is in a step shape.
Further, the reversing mechanism includes: a plurality of wedge-shaped copper sheets; each wedge-shaped copper sheet is annularly distributed on the motor shaft, and a channel is formed between every two adjacent wedge-shaped copper sheets.
Further, the carbon brush mechanism includes: a plurality of carbon brush pieces; each carbon brush piece is movably arranged in the shell and positioned at the outer side of the reversing mechanism, and each carbon brush piece respectively abuts against the reversing mechanism.
Further, two of the carbon brush members are provided.
Further, the carbon powder cleaning mechanism includes: a plurality of carbon powder cleaning components; each carbon powder cleaning component is positioned on the outer side of the reversing mechanism, and each carbon powder cleaning component is positioned above the bearing chamber; when the motor is started, each carbon powder cleaning assembly acts under the pushing of a magnetic field, and each carbon powder cleaning assembly pushes carbon powder accumulated below the carbon brush mechanism into the bearing chamber until each carbon powder cleaning assembly and the carbon brush mechanism circumferentially prop against the motor shaft; when the motor is stopped, each carbon powder cleaning assembly is reset, and each carbon powder cleaning assembly props against the reversing mechanism.
Further, two of the toner cleaning assemblies are provided.
Further, the toner cleaning assembly includes: the device comprises a fixing frame, an upper cleaning unit, a magnetic pushing unit, a flexible connecting unit and a lower cleaning unit; the fixing frame is positioned at the outer side of the reversing mechanism, a movable channel is formed in the fixing frame, the flexible connecting unit penetrates through the movable channel, two ends of the flexible connecting unit are exposed from a top opening and a bottom opening of the movable channel respectively, the top opening is arranged towards the reversing mechanism, the bottom opening is arranged towards a motor shaft, the upper cleaning unit and the magnetic pushing unit are connected with one end of the flexible connecting unit, the magnetic pushing unit is movably connected with the fixing frame, the other end of the flexible connecting section of the lower cleaning unit is connected, and the upper cleaning unit is positioned above the lower cleaning unit; when the motor is started, the magnetic field formed by the coil mechanism pushes the magnetic pushing unit to move towards the fixing frame, so that the upper cleaning unit is pushed to move towards the fixing frame, and the lower cleaning unit is driven by the flexible connection unit to move towards the motor shaft, so that the carbon powder accumulated below the carbon brush mechanism is pushed into the bearing chamber by the lower cleaning unit until the lower cleaning unit and the carbon brush mechanism circumferentially prop against the motor shaft; when the motor is stopped, the magnetic pushing unit is reset, and the upper cleaning unit is driven by the magnetic pushing unit to prop against the reversing mechanism.
Further, the upper cleaning unit includes: a brush; the brush is arranged at the end part of the flexible connection unit.
Further, the magnetic pushing unit includes: a magnetic block and an elastic member; the magnetic block is connected with one end of the flexible connection unit, and the magnetic block is connected with the fixing frame through the elastic piece.
Further, the magnetic block is obliquely arranged towards the fixing frame.
Further, the elastic member includes: a V-shaped spring plate; one end of the V-shaped elastic piece is connected with the magnetic block, and the other end of the V-shaped elastic piece is connected with the fixing frame.
Further, the flexible connection unit includes: a flexible sheet; the flexible sheet movably passes through the movable channel, two ends of the flexible sheet are respectively exposed from the top opening and the bottom opening of the movable channel, one end of the flexible sheet is connected with the upper cleaning unit and the magnetic pushing unit, and the other end of the flexible sheet is connected with the lower cleaning unit.
Further, the lower cleaning unit includes: a lower cleaning block; the lower cleaning block is arranged at the end part of the flexible connection unit.
Further, the lower cleaning block is arranged in a wedge shape, and the lower cleaning block is matched with the motor shaft.
Further, a graphite layer is arranged on the lower cleaning block, and the graphite layer is arranged towards the motor shaft.
On the other hand, the application provides a working method of the self-cleaning brush motor, which comprises the following steps: when the motor is started, a magnetic field formed by the coil mechanism pushes the carbon powder cleaning mechanism to act, the carbon powder cleaning mechanism pushes carbon powder accumulated below the carbon brush mechanism into the bearing chamber so as to lubricate the rotating bearing until the carbon powder cleaning mechanism and the carbon brush mechanism circumferentially prop against the motor shaft, so that the offset of the motor shaft is eliminated, and the carbon powder cleaning mechanism lubricates when prop against the motor shaft; when the motor is stopped, the carbon powder cleaning mechanism is reset, the carbon powder cleaning mechanism props against the reversing mechanism to clean carbon powder in and on the surface of a channel on the reversing mechanism, and the carbon powder cleaning mechanism prevents the motor shaft from continuing to rotate.
The application has the beneficial effects that the magnetic field generated after the coil mechanism is electrified pushes the carbon powder cleaning mechanism to act, so that the carbon powder accumulated in the shell can be pushed into the bearing chamber in time, the carbon powder has lubricating property, the carbon powder cleaning mechanism and the carbon brush mechanism are in circumferential direction to prop against the motor shaft, the offset generated by uneven stress of the motor shaft can be eliminated, the motor shaft can realize stable rotation, and the reversing mechanism and the carbon powder cleaning mechanism can relatively rotate at the moment of motor shutdown by utilizing the inertia of the motor shaft, so that the carbon powder in and on the surface of a channel on the reversing mechanism can be cleaned in time, the electric energy transmission efficiency between the carbon brush mechanism and the reversing mechanism is prevented from being influenced by the change of the resistance coefficient of the carbon powder, the surface abrasion of the carbon brush mechanism is delayed, the influence on the service life of the carbon brush mechanism and the reversing mechanism is reduced, the safety of other parts in the reversing mechanism and the shell is improved, and the cleaning mechanism also plays a role in braking the motor shaft.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present application, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is an exploded view of a self-cleaning brush motor of the present application;
FIG. 2 is a block diagram of a self-cleaning brush motor of the present application;
FIG. 3 is a schematic diagram of the coil mechanism, reversing mechanism of the present application mounted on a motor shaft;
FIG. 4 is a complete view of the carbon brush mechanism and carbon powder cleaning mechanism of the present application;
FIG. 5 is a block diagram of the carbon brush mechanism and carbon dust cleaning mechanism of the present application relative to the position of the rotating bearing;
FIG. 6 is a block diagram of the position of the toner cleaning assembly of the present application relative to a rotational bearing;
FIG. 7 is a block diagram of a carbon dust cleaning assembly of the present application;
FIG. 8 is a block diagram of a mount of the present application;
fig. 9 is a structural view of the upper cleaning unit, the lower cleaning unit, and the magnetic pushing unit of the present application connected to the flexible connection unit.
In the figure:
1. a housing;
2. a motor shaft;
3. a coil mechanism; 31. a virtual groove;
4. a reversing mechanism; 41. a wedge-shaped copper sheet;
5. a carbon brush mechanism; 51. a carbon brush member;
6. a carbon powder cleaning mechanism; 61. a carbon powder cleaning assembly; 611. a fixing frame; 6111. a top opening; 6112. a bottom opening; 612. an upper cleaning unit; 6121. a brush; 613. a magnetic pushing unit; 6131. a magnetic block; 6132. an elastic member; 614. a flexible connection unit; 6141. a flexible sheet; 615. a lower cleaning unit; 6151. a lower cleaning block;
7. and (5) rotating the bearing.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Embodiment 1, in this embodiment, as shown in fig. 1 to 9, this embodiment provides a self-cleaning brush motor, which includes: the device comprises a shell 1, a motor shaft 2, a coil mechanism 3, a reversing mechanism 4, a carbon brush mechanism 5, a carbon powder cleaning mechanism 6 and a rotating bearing 7, wherein the motor shaft 2, the coil mechanism 3, the reversing mechanism 4, the carbon brush mechanism 5, the carbon powder cleaning mechanism 6 and the rotating bearing 7 are arranged in the shell 1; the coil mechanism 3 and the reversing mechanism 4 are sleeved on the motor shaft 2, the coil mechanism 3 is positioned above the reversing mechanism 4, the carbon brush mechanism 5 and the carbon powder cleaning mechanism 6 are positioned outside the reversing mechanism 4, the rotating bearing 7 is positioned in a bearing chamber of the shell 1, the bearing chamber is positioned below the carbon powder cleaning mechanism 6, and the motor shaft 2 passes through the carbon brush mechanism 5, the carbon powder cleaning mechanism 6 and the rotating bearing 7; when the motor is started, the magnetic field formed by the coil mechanism 3 pushes the carbon powder cleaning mechanism 6 to act, the carbon powder cleaning mechanism 6 pushes carbon powder accumulated below the carbon brush mechanism 5 into a bearing chamber so as to lubricate the rotating bearing 7 until the carbon powder cleaning mechanism 6 and the carbon brush mechanism 5 circumferentially abut against the motor shaft 2 to eliminate the offset of the motor shaft 2, and the carbon powder cleaning mechanism 6 lubricates when abutting against the motor shaft 2; when the motor is stopped, the carbon powder cleaning mechanism 6 is reset, the carbon powder cleaning mechanism 6 props against the reversing mechanism 4 to clean carbon powder in and on the surface of a channel on the reversing mechanism 4, and the carbon powder cleaning mechanism 6 prevents the motor shaft 2 from continuing to rotate.
In this embodiment, the magnetic field generated after the coil mechanism 3 is electrified pushes the carbon powder cleaning mechanism 6 to act, so that the carbon powder accumulated in the shell 1 can be pushed into the bearing chamber in time, the carbon powder has a lubricating characteristic and plays a role in lubricating the rotating bearing 7, meanwhile, the carbon powder cleaning mechanism 6 and the carbon brush mechanism 5 are circumferentially propped against the motor shaft 2, the offset generated by uneven stress of the motor shaft 2 can be eliminated, the motor shaft 2 can realize stable rotation, and at the moment of motor shutdown, the carbon powder in the channel and on the surface of the reversing mechanism 4 can be cleaned in time by utilizing the inertia of the motor shaft 2, the carbon powder in the reversing mechanism 4 and the carbon powder cleaning mechanism 6 can relatively rotate, the electric energy transmission efficiency between the carbon brush mechanism 5 and the reversing mechanism 4 is prevented from being influenced by the change of the resistance coefficient of the carbon powder, the surface abrasion of the carbon brush mechanism 5 is delayed, the influence on the service life of the carbon brush mechanism 5 and the reversing mechanism 4 is reduced, the safety of the reversing mechanism 4 and other parts in the shell 1 is improved, and the carbon powder cleaning mechanism 6 plays a role in braking the motor shaft 2.
In this embodiment, the coil mechanism 3 is provided with a plurality of 31 virtual slots, which is favorable for reversing, reducing harmonic resonance and improving noise.
In this embodiment, the PTC is disposed in the end cover of the housing 1, which plays a role in thermal protection, and the copper sheet is disposed outside the inductor in the end cover, thereby protecting the inductor and being beneficial to EMC; the rotating bearing 7 is riveted in the bearing chamber, and the rotating bearing 7 is in a step shape, so that the structural space is optimized.
In this embodiment, the reversing mechanism 4 includes: a plurality of wedge-shaped copper sheets 41; each wedge-shaped copper sheet 41 is annularly distributed on the motor shaft 2, and a channel is formed between every two adjacent wedge-shaped copper sheets 41.
In this embodiment, each wedge-shaped copper sheet 41 forms a commutator, which plays a role in commutation.
In this embodiment, the carbon brush mechanism 5 includes: a plurality of carbon brush members 51; each carbon brush piece 51 is movably arranged in the shell 1 and is positioned outside the reversing mechanism 4, and each carbon brush piece 51 respectively abuts against the reversing mechanism 4.
In the present embodiment, each carbon brush member 51 is pushed by the corresponding spring assembly to always support against the reversing mechanism 4, so as to realize power transmission.
In the present embodiment, as an alternative embodiment of the carbon brush mechanism 5, two of the carbon brush members 51 are provided.
In this embodiment, the carbon powder cleaning mechanism 6 includes: a plurality of toner cleaning assemblies 61; each of the toner cleaning assemblies 61 is located outside the reversing mechanism 4, and each of the toner cleaning assemblies 61 is located above the bearing chamber; when the motor is started, each carbon powder cleaning assembly 61 acts under the pushing of a magnetic field, and each carbon powder cleaning assembly 61 pushes carbon powder accumulated below the carbon brush mechanism 5 into the bearing chamber until each carbon powder cleaning assembly 61 and the carbon brush mechanism 5 circumferentially prop against the motor shaft 2; at the moment of motor shutdown, each carbon powder cleaning assembly 61 is reset, and each carbon powder cleaning assembly 61 abuts against the reversing mechanism 4.
In this embodiment, the carbon powder cleaning assembly 61 performs the mode switching at the moment of starting the motor and the moment of stopping the motor, and by changing the mode of the carbon powder cleaning assembly 61, the carbon powder is sent into the bearing chamber, the offset caused by uneven stress on the motor shaft 2 is eliminated, the carbon powder in and on the channel of the reversing mechanism 4 is cleaned, and the inertia force of the motor shaft 2 is overcome.
In this embodiment, as an alternative embodiment of the toner cleaning mechanism 6, two of the toner cleaning assemblies 61 are provided.
In this embodiment, because two carbon brush members 51 and two carbon powder cleaning assemblies 61 are provided, the motor shaft 2 can be supported in four directions, namely up, down, left and right, so that the stress of the motor shaft 2 is uniform, the offset caused by uneven stress of the motor shaft 2 is eliminated, and the rotation of the motor shaft 2 is more stable.
In this embodiment, the toner cleaning assembly 61 includes: a fixing frame 611, an upper cleaning unit 612, a magnetic pushing unit 613, a flexible connection unit 614 and a lower cleaning unit 615; the fixing frame 611 is located at the outer side of the reversing mechanism 4, a movable channel is formed in the fixing frame 611, the flexible connection unit 614 penetrates through the movable channel, two ends of the flexible connection unit 614 are exposed from a top opening 6111 and a bottom opening 6112 of the movable channel respectively, the top opening 6111 is arranged towards the reversing mechanism 4, the bottom opening 6112 is arranged towards a motor shaft 2, the upper cleaning unit 612 and the magnetic pushing unit 613 are connected with one end of the flexible connection unit 614, the magnetic pushing unit 613 is movably connected with the fixing frame 611, the other end of the flexible connection section of the lower cleaning unit 615 is connected, and the upper cleaning unit 612 is located above the lower cleaning unit 615; when the motor is started, the magnetic field formed by the coil mechanism 3 pushes the magnetic pushing unit 613 to move towards the fixing frame 611, so as to push the upper cleaning unit 612 to move towards the fixing frame 611, and the lower cleaning unit 615 is driven by the flexible connection unit 614 to move towards the motor shaft 2, so that the lower cleaning unit 615 pushes carbon powder accumulated below the carbon brush mechanism 5 into the bearing chamber until the lower cleaning unit 615 and the carbon brush mechanism 5 circumferentially prop against the motor shaft 2; at the moment of stopping the motor, the magnetic pushing unit 613 resets, and the upper cleaning unit 612 is driven by the magnetic pushing unit 613 to prop against the reversing mechanism 4.
In this embodiment, the fixing frame 611 plays a role of installing the upper cleaning unit 612, the magnetic pushing unit 613, the flexible connecting unit 614 and the lower cleaning unit 615, the motor is started to instantly enable the coil mechanism 3 to generate a magnetic field, the magnetic field and the magnetic pushing unit 613 repel each other, the generated repulsive force pushes the magnetic pushing unit 613 to move towards the fixing frame 611, meanwhile, the magnetic pushing unit 613 drives the upper part of the flexible connecting unit 614 to retract into the movable channel from the top opening 6111, as the length of the flexible connecting unit 614 is fixed, the lower part of the flexible connecting unit 614 extends out from the bottom opening 6112 to further drive the lower cleaning unit 615 to move towards the motor shaft 2, and carbon powder consumed on the carbon brush mechanism 5 falls between the lower cleaning unit 615 and the motor shaft 2, meanwhile, the bearing chamber is located below the lower cleaning unit 615, the lower cleaning unit 615 can just push carbon powder into the bearing chamber, since the carbon powder has the characteristic of lubrication, the bearing chamber is required to be periodically added with the lubricating oil to lubricate the rotating bearing 7, the carbon powder and the lubricating oil are mixed to achieve a good lubrication effect, the consumed carbon powder is used for replacing a part of the lubricating oil, the consumption of the lubricating oil can be reduced, the resource can be fully utilized, the practical cost can be reduced until the lower cleaning unit 615 is propped against the motor shaft 2, at the moment, the lower cleaning unit 615 and the carbon brush mechanism 5 are propped against the motor shaft 2 together, the circumferential propping against the motor shaft 2 can be realized, the offset caused by uneven stress of the motor shaft 2 can be eliminated, the motor shaft 2 can rotate more stably, the magnetic field generated by the coil mechanism 3 is eliminated when the motor is stopped, the magnetic pushing unit 613 is reset under the action of elasticity, the magnetic pushing unit 613 moves away from the fixing frame 611, the upper part of the magnetic pushing unit 613 drives the flexible connecting unit 614 to extend out of the top opening 6111, because the length of the flexible connection unit 614 is fixed, the lower part of the flexible connection unit 614 is retracted into the movable channel from the bottom opening 6112, and then the lower cleaning unit 615 is driven to move away from the motor shaft 2, so that carbon powder can be continuously collected between the lower cleaning unit 615 and the motor shaft 2, the next lower cleaning unit 615 can push the carbon powder into the bearing chamber until the upper cleaning unit 612 abuts against the reversing mechanism 4, although the motor is stopped, the motor shaft 2 can continuously drive the reversing mechanism 4 to rotate under the action of inertia, namely the reversing mechanism 4 rotates relative to the upper cleaning unit 612, at the moment, the upper cleaning unit 612 can clean the carbon powder in and on the upper channel of the reversing mechanism 4, and meanwhile, the resistance between the upper cleaning unit 612 and the reversing mechanism 4 can brake the motor shaft 2, so that the motor shaft 2 can rapidly stop rotating.
In this embodiment, the upper cleaning unit 612 includes: a brush 6121; the brush 6121 is provided at an end of the flexible connection unit 614.
In this embodiment, when the brush 6121 abuts against the reversing mechanism 4, the brush 6121 can clean carbon powder in and on the surface of the channel on the reversing mechanism 4, and meanwhile, the resistance between the brush 6121 and the reversing mechanism 4 can brake the motor shaft 2.
In this embodiment, the magnetic pushing unit 613 includes: a magnetic block 6131 and an elastic member 6132; the magnetic block 6131 is connected with one end of the flexible connection unit 614, and the magnetic block 6131 is connected with the fixing frame 611 through an elastic member 6132.
In this embodiment, the magnetic field generated by the magnetic block 6131 and the coil mechanism 3 repels, the repulsive force pushes the magnetic block 6131 to squeeze the elastic sheet, so that the magnetic block 6131 drives the flexible connection unit 614 to drive the upper portion of the flexible connection unit 614 to retract into the movable channel from the top opening 6111, and when the magnetic field is eliminated, the elastic force of the elastic member 6132 can drive the magnetic block 6131 to reset, so that the magnetic block 6131 drives the upper portion of the flexible connection unit 614 to extend out from the top opening 6111.
In this embodiment, the magnetic block 6131 is disposed obliquely toward the fixing frame 611, so that the magnetic field pushes the magnetic block 6131 to move.
In this embodiment, the elastic member 6132 includes: a V-shaped spring plate; one end of the V-shaped elastic piece is connected with the magnetic block 6131, and the other end of the V-shaped elastic piece is connected with the fixing frame 611.
In the embodiment, the V-shaped spring plate can realize the position adjustment of the magnetic block 6131.
In this embodiment, the flexible connection unit 614 includes: a flexible sheet 6141; the flexible sheet 6141 movably passes through the movable channel, two ends of the flexible sheet 6141 are respectively exposed from the top opening 6111 and the bottom opening 6112 of the movable channel, one end of the flexible sheet 6141 is connected with the upper cleaning unit 612 and the magnetic pushing unit 613, and the other end of the flexible sheet 6141 is connected with the lower cleaning unit 615.
In the present embodiment, the flexible sheet 6141 is capable of being deformed in the movable passage, enabling movement of the upper cleaning unit 612 and the lower cleaning unit 615.
In this embodiment, the lower cleaning unit 615 includes: a lower cleaning block 6151; the lower cleaning block 6151 is disposed at the end of the flexible connection unit 614.
In this embodiment, the lower cleaning block 6151 is wedge-shaped, and the lower cleaning block 6151 is adapted to the motor shaft 2, so as to push the carbon powder into the bearing chamber and against the motor shaft 2.
In this embodiment, a graphite layer is disposed on the lower cleaning block 6151, and the graphite layer is disposed toward the motor shaft 2.
In this embodiment, the graphite layer has a lubrication characteristic, and is capable of lubricating the motor shaft 2 when the lower cleaning block 6151 abuts against the motor shaft 2.
Embodiment 2 on the basis of embodiment 1, this embodiment provides a working method of a self-cleaning brush motor as provided in embodiment 1, which includes: when the motor is started, the magnetic field formed by the coil mechanism 3 pushes the carbon powder cleaning mechanism 6 to act, the carbon powder cleaning mechanism 6 pushes carbon powder accumulated below the carbon brush mechanism 5 into the bearing chamber so as to lubricate the rotary bearing 7 until the carbon powder cleaning mechanism 6 and the carbon brush mechanism 5 circumferentially abut against the motor shaft 2 so as to eliminate the offset of the motor shaft 2, and the carbon powder cleaning mechanism 6 lubricates when abutting against the motor shaft 2; when the motor is stopped, the carbon powder cleaning mechanism 6 is reset, the carbon powder cleaning mechanism 6 props against the reversing mechanism 4 to clean carbon powder in and on the surface of a channel on the reversing mechanism 4, and the carbon powder cleaning mechanism 6 prevents the motor shaft 2 from continuing to rotate.
In summary, the carbon powder cleaning mechanism is pushed to act by the magnetic field generated after the coil mechanism is electrified, the carbon powder accumulated in the shell can be pushed into the bearing chamber in time, the carbon powder has the lubrication characteristic and plays a role of lubricating the rotating bearing, meanwhile, the carbon powder cleaning mechanism and the carbon brush mechanism are circumferentially propped against the motor shaft, the offset generated by uneven stress of the motor shaft can be eliminated, the motor shaft can realize stable rotation, and at the moment of motor shutdown, the reversing mechanism and the carbon powder cleaning mechanism can relatively rotate by utilizing the inertia of the motor shaft, carbon powder in channels and on the surface of the reversing mechanism can be timely cleaned, the electric energy transmission efficiency between the carbon brush mechanism and the reversing mechanism is prevented from being influenced by the change of the resistance coefficient of the carbon powder, the surface abrasion of the carbon brush mechanism is delayed, the influence of the carbon powder on the service life of the mechanism and the reversing mechanism is reduced, the safety of the reversing mechanism and other parts in the shell is improved, and the carbon powder cleaning mechanism plays a role of braking the motor shaft.
The components (components not illustrating the specific structure) selected in the present application are common standard components or components known to those skilled in the art, and the structures and principles thereof are known to those skilled in the art through technical manuals or through routine experimental methods.
In the description of embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
With the above-described preferred embodiments according to the present application as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present application. The technical scope of the present application is not limited to the description, but must be determined according to the scope of claims.
Claims (16)
1. A self-cleaning brush motor comprising:
the device comprises a shell, a motor shaft, a coil mechanism, a reversing mechanism, a carbon brush mechanism, a carbon powder cleaning mechanism and a rotating bearing, wherein the motor shaft, the coil mechanism, the reversing mechanism, the carbon brush mechanism, the carbon powder cleaning mechanism and the rotating bearing are arranged in the shell; wherein the method comprises the steps of
The coil mechanism and the reversing mechanism are sleeved on a motor shaft, the coil mechanism is positioned above the reversing mechanism, the carbon brush mechanism and the carbon powder cleaning mechanism are positioned at the outer side of the reversing mechanism, the rotating bearing is positioned in a bearing chamber of the shell, the bearing chamber is positioned below the carbon powder cleaning mechanism, and the motor shaft penetrates through the carbon brush mechanism, the carbon powder cleaning mechanism and the rotating bearing;
the carbon powder cleaning mechanism comprises: a plurality of carbon powder cleaning components;
each carbon powder cleaning component is positioned on the outer side of the reversing mechanism, and each carbon powder cleaning component is positioned above the bearing chamber;
the toner cleaning assembly includes: the device comprises a fixing frame, an upper cleaning unit, a magnetic pushing unit, a flexible connecting unit and a lower cleaning unit;
the fixing frame is positioned at the outer side of the reversing mechanism, a movable channel is formed in the fixing frame, the flexible connecting unit penetrates through the movable channel, two ends of the flexible connecting unit are exposed from a top opening and a bottom opening of the movable channel respectively, the top opening is arranged towards the reversing mechanism, the bottom opening is arranged towards a motor shaft, the upper cleaning unit and the magnetic pushing unit are connected with one end of the flexible connecting unit, the magnetic pushing unit is movably connected with the fixing frame, the lower cleaning unit is connected with the other end of the flexible connecting unit, and the upper cleaning unit is positioned above the lower cleaning unit;
when the motor is started, the magnetic field formed by the coil mechanism pushes the magnetic pushing unit to move towards the fixing frame, so that the upper cleaning unit is pushed to move towards the fixing frame, and the lower cleaning unit is driven by the flexible connection unit to move towards the motor shaft, so that the carbon powder accumulated below the carbon brush mechanism is pushed into the bearing chamber by the lower cleaning unit until the lower cleaning unit and the carbon brush mechanism circumferentially prop against the motor shaft;
when the motor is stopped, the magnetic pushing unit is reset, and the upper cleaning unit is driven by the magnetic pushing unit to prop against the reversing mechanism.
2. A self-cleaning brush motor according to claim 1, wherein,
the coil mechanism is provided with a plurality of virtual grooves.
3. A self-cleaning brush motor according to claim 1, wherein,
PTC is arranged in an end cover of the shell, and copper sheets are arranged on the outer side of the inductor in the end cover;
the rotating bearing is riveted in the bearing chamber and is in a step shape.
4. A self-cleaning brush motor according to claim 1, wherein,
the reversing mechanism comprises: a plurality of wedge-shaped copper sheets;
each wedge-shaped copper sheet is annularly distributed on the motor shaft, and a channel is formed between every two adjacent wedge-shaped copper sheets.
5. A self-cleaning brush motor according to claim 1, wherein,
the carbon brush mechanism includes: a plurality of carbon brush pieces;
each carbon brush piece is movably arranged in the shell and positioned at the outer side of the reversing mechanism, and each carbon brush piece respectively abuts against the reversing mechanism.
6. A self-cleaning brush motor according to claim 5, wherein,
two carbon brush pieces are arranged.
7. A self-cleaning brush motor according to claim 1, wherein,
two of the toner cleaning assemblies are provided.
8. A self-cleaning brush motor according to claim 1, wherein,
the upper cleaning unit includes: a brush;
the brush is arranged at the end part of the flexible connection unit.
9. A self-cleaning brush motor according to claim 1, wherein,
the magnetic pushing unit includes: a magnetic block and an elastic member;
the magnetic block is connected with one end of the flexible connection unit, and the magnetic block is connected with the fixing frame through the elastic piece.
10. A self-cleaning brush motor according to claim 9, wherein,
the magnetic block is obliquely arranged towards the fixing frame.
11. A self-cleaning brush motor according to claim 9, wherein,
the elastic member includes: a V-shaped spring plate;
one end of the V-shaped elastic piece is connected with the magnetic block, and the other end of the V-shaped elastic piece is connected with the fixing frame.
12. A self-cleaning brush motor according to claim 1, wherein,
the flexible connection unit includes: a flexible sheet;
the flexible sheet movably passes through the movable channel, two ends of the flexible sheet are respectively exposed from the top opening and the bottom opening of the movable channel, one end of the flexible sheet is connected with the upper cleaning unit and the magnetic pushing unit, and the other end of the flexible sheet is connected with the lower cleaning unit.
13. A self-cleaning brush motor according to claim 1, wherein,
the lower cleaning unit includes: a lower cleaning block;
the lower cleaning block is arranged at the end part of the flexible connection unit.
14. A self-cleaning brush motor according to claim 13, wherein,
the lower cleaning block is in a wedge-shaped arrangement, and is matched with the motor shaft.
15. A self-cleaning brush motor according to claim 13, wherein,
the lower cleaning block is provided with a graphite layer, and the graphite layer is arranged towards the motor shaft.
16. A method of operating a self-cleaning brush motor according to any one of claims 1-15, comprising:
when the motor is started, a magnetic field formed by the coil mechanism pushes the carbon powder cleaning mechanism to act, the carbon powder cleaning mechanism pushes carbon powder accumulated below the carbon brush mechanism into the bearing chamber so as to lubricate the rotating bearing until the carbon powder cleaning mechanism and the carbon brush mechanism circumferentially prop against the motor shaft, so that the offset of the motor shaft is eliminated, and the carbon powder cleaning mechanism lubricates when prop against the motor shaft;
when the motor is stopped, the carbon powder cleaning mechanism is reset, the carbon powder cleaning mechanism props against the reversing mechanism to clean carbon powder in and on the surface of a channel on the reversing mechanism, and the carbon powder cleaning mechanism prevents the motor shaft from continuing to rotate.
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| CN202311119259.3A CN116846154B (en) | 2023-09-01 | 2023-09-01 | Self-cleaning brush motor and working method |
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| CN202311119259.3A CN116846154B (en) | 2023-09-01 | 2023-09-01 | Self-cleaning brush motor and working method |
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| CN116846154B true CN116846154B (en) | 2023-11-14 |
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| CN116846154A (en) | 2023-10-03 |
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