CN111600401A - Direct-drive motor and cleaning robot applying same - Google Patents
Direct-drive motor and cleaning robot applying same Download PDFInfo
- Publication number
- CN111600401A CN111600401A CN202010569039.0A CN202010569039A CN111600401A CN 111600401 A CN111600401 A CN 111600401A CN 202010569039 A CN202010569039 A CN 202010569039A CN 111600401 A CN111600401 A CN 111600401A
- Authority
- CN
- China
- Prior art keywords
- stator assembly
- drive motor
- direct drive
- upper cover
- cleaning robot
- 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.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
- A47L11/4002—Installations of electric equipment
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/0094—Structural association with other electrical or electronic devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
-
- 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
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
-
- 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
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
Abstract
The invention discloses a direct drive motor and a cleaning robot applying the same, wherein the direct drive motor comprises an upper cover, a magnet assembly, a stator assembly and a base, the upper cover is arranged outside the stator assembly, the magnet assembly is arranged on the inner wall of the upper cover, the base is positioned at the bottom of the upper cover, and the stator assembly is arranged in a motor inner cavity formed by the upper cover and the base; when the magnetic iron is electrified to work, the upper cover rotates around the stator assembly under the action of the magnetic force between the magnet assembly and the stator assembly. The cleaning robot comprises a robot body and the direct drive motor, wherein the direct drive motor is arranged in a driving wheel, a cleaning module, a washing base station or/and a dust collection module of the cleaning robot body. The cleaning robot provided by the invention adopts the brushless direct drive motor, does not need a carbon brush structure and a reduction gearbox, and has the advantages of high working efficiency, low energy consumption, simple structure, low failure rate, long service life, low working noise and low production cost.
Description
Technical Field
The invention belongs to the technical field of floor sweeping machines, and particularly relates to a direct drive motor and a cleaning robot applying the same.
Background
In the prior art, a brush motor is used as a power source of the cleaning robot, a reduction gearbox is used as a transmission device, the effects of reducing and increasing speed are achieved, and power is provided for walking and cleaning of the cleaning robot. However, the brush motor has the following disadvantages and shortcomings:
1. the life of the brushed motor is short: because the commutation is realized by the carbon brush, the abrasion condition exists;
2. when the device is matched with a reduction gearbox, the noise is large: the motor has high rotating speed and high vibration source order, and the reduction gearbox can also make sound during transmission;
3. the reduction box has low efficiency and large power consumption: the reduction gearbox has friction resistance and lubricating grease resistance, so that the transmission efficiency is low;
4. the layout of the motor and the reduction box is complex: the shell needs to be designed according to the size of the gear and the size of the motor, and the layout is complex;
5. because the reduction gearbox is matched with a gap, the output end of the reduction gearbox has a back gap.
Disclosure of Invention
In order to solve the problems and the defects in the prior art, the invention aims to provide a direct-drive motor and a cleaning robot applying the same, wherein the motor is simple in structure, high in power transmission efficiency, low in noise and long in service life.
In order to achieve the above object, the present invention firstly provides a direct drive motor, which is applied to a cleaning robot, and comprises an upper cover, a magnet assembly, a stator assembly and a base, wherein the magnet assembly is arranged on the inner wall of the upper cover; when the magnetic iron is electrified to work, the upper cover rotates around the stator assembly under the action of the magnetic force between the magnet assembly and the stator assembly.
Further, the upper cover includes top surface and lateral wall, and the top surface setting is in the upper end of lateral wall, and magnet assembly installs on the lateral wall to form clearance fit, top surface and stator module clearance fit with stator module.
Further, the magnet assembly surface is pasted on the lateral wall, or is inlayed in the mounting groove of lateral wall.
Further, still include the motor shaft, the one end and the top surface of motor shaft are connected, and the upper cover passes through motor shaft and stator module swing joint.
Further, the base comprises a bottom surface and a central shaft, the central shaft is fixed on the bottom surface, and the stator assembly is sleeved on the central shaft.
Furthermore, a bearing chamber is arranged in the middle of the central shaft, and the motor shaft is movably connected with the bearing chamber through a bearing.
Further, stator module includes iron core and copper line, and the copper line winding is on the iron core, and the iron core cover is established on the center pin, and magnet module's magnetic pole number is greater than the tooth socket number of iron core.
Further, still including the circuit board that is used for control switching-over, its and stator module are equipped with three binding post on the circuit board, and stator module is equipped with three connector lug, and the connector lug links to each other with binding post one-to-one.
Further, the stator assembly further comprises a gasket, and the gasket is arranged at the bottom of the stator assembly.
The invention also provides a cleaning robot which comprises a robot body and the direct drive motor, wherein the direct drive motor is arranged in the driving wheel, the cleaning module, the washing base station or/and the dust collection module of the cleaning robot body.
Compared with the prior art, the invention has the beneficial effects that: the upper cover and the magnet assembly form an outer rotor, and the outer rotor is matched with the stator assembly, so that the upper cover rotates outside the stator assembly to directly form a power source, a reduction box is not needed, and the cleaning robot can be directly driven to perform cleaning work such as walking, sweeping or mopping. The invention has no carbon brush structure, and the service life of the motor is not influenced by the abrasion of the carbon brush; the direct-drive motor has the advantages that the reduction gearbox is removed, the internal structure of the motor can be simplified, the failure rate is reduced, the power transmission efficiency is improved, the kinetic energy consumed by the reduction gearbox and the noise generated by the reduction gearbox are eliminated, and meanwhile, the direct-drive motor is low in rotating speed and low in vibration source order, and the generated noise is also reduced. The invention is applied to the cleaning robot, greatly improves the working efficiency of the cleaning robot, reduces the energy consumption, simplifies the structure and saves the production cost.
Drawings
FIG. 1 is a cross-sectional view of a direct drive motor according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an upper cover according to an embodiment of the present invention;
fig. 3 is an exploded view of a direct drive motor according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The first embodiment is as follows:
the embodiment one of the invention provides a direct drive motor, which is applied to a cleaning robot, and as shown in fig. 1-3, the direct drive motor comprises an upper cover 1, a magnet assembly 2, a stator assembly 3 and a base 4, wherein the magnet assembly 2 is arranged on the inner wall of the upper cover 1, the upper cover 1 is arranged on the base 4, the stator assembly 3 is arranged in a cavity formed by the upper cover 1 and the base 4, and the magnet assembly 2 and the stator assembly 3 have an air gap for electromechanical energy conversion; when the power supply works, the upper cover 1 rotates around the stator assembly 3 under the action of the magnetic force between the magnet assembly 2 and the stator assembly 3.
By adopting the structure, the outer rotor is formed by the upper cover 1 and the magnet assembly 2 and is matched with the stator assembly 3, so that the upper cover 1 rotates outside the stator assembly 3 to directly form a power source, a reduction gearbox is not needed, and the cleaning robot can be directly driven to do cleaning work such as walking, sweeping or mopping. The invention has no carbon brush structure, and the service life of the motor is not influenced by the abrasion of the carbon brush; the reduction gearbox is removed, the internal structure of the motor can be simplified, the power transmission efficiency is improved, and the kinetic energy consumed by the reduction gearbox and the noise generated by the reduction gearbox are eliminated. The working efficiency of the cleaning robot and the use experience of a user are improved.
As shown in fig. 2, the upper cover 1 includes a top surface 11 and a sidewall 12, the top surface 11 is disposed at an upper end of the sidewall 12, the magnet assembly 2 is mounted on the sidewall 12 and forms an air gap with the stator assembly 3, and the top surface 11 is movably engaged with the stator assembly 3. The magnet assembly 2 on the side wall 12 and the stator assembly 3 generate magnetic force and drive the upper cover 1 to rotate.
This embodiment still includes motor shaft 5, and the one end of motor shaft 5 is connected with top surface 11, and upper cover 1 passes through motor shaft 5 and stator module 3 swing joint. The motor shaft 5 is used as a rotating shaft to rotate, so that the upper cover 1 can rotate more stably and smoothly.
The base 4 comprises a bottom surface 41 and a central shaft 42, the central shaft 42 is fixed on the bottom surface 41, the stator assembly 3 is sleeved on the central shaft 42, the bottom surface 41 is positioned below the upper cover 1, the central shaft 42 is positioned in the inner cavity of the motor, and the motor shaft 5 is movably arranged in the central shaft 42. Stator module 3 and base 4 are interference fit, and like this both form fastening connection, and when the motor work, make stator module 3 immobile, the motor shaft is rotatory in center pin 42.
The middle of the central shaft 42 is provided with a bearing chamber, and the motor shaft 5 and the bearing chamber of the central shaft 42 are movably connected through a bearing 8. The outer ring of the bearing 8 is in interference fit with the inner wall of the central shaft 42, the inner ring of the bearing 8 is in loose fit with the motor shaft 5, the top end of the motor shaft 5 is provided with a screw 9, the motor shaft 5 realizes pre-tightening on the bearing 8 through the screw 9, the axial clearance of the bearing 8 is eliminated, and meanwhile, the axial float of the motor shaft 5 is prevented.
The stator assembly 3 comprises an iron core 31 and a copper wire 32, wherein the copper wire 32 is wound on the iron core 31, and the iron core 31 is sleeved on the central shaft 42. When the copper wire 32 is energized, a magnetic force is generated between the core 31 and the magnet assembly 2.
The magnet assembly 2 includes a plurality of magnets 21, each magnet 21 having one magnetic pole, and the number of tooth grooves 311 of the core 31 is equal to the number of magnets 21, and when a current is applied, a magnetic force is formed between the magnets 21 and the tooth grooves 311. In the present embodiment, the magnet assembly 2 is preferably provided with twenty magnets, i.e., twenty poles; the tooth slots 311 of the iron core 31 are preferably eighteen. Therefore, when the magnet assembly 2 rotates, the stress can be uniformly applied at each angle, and the rotation is stable.
The motor stator assembly also comprises a circuit board 6 for controlling reversing, wherein the circuit board 6 is arranged on the base 4, and the stator assembly 3 is electrically connected with the circuit board 6; be equipped with three binding post on the circuit board 6, stator module 3 is equipped with three connector lug, and the connector lug links to each other with binding post one-to-one. Therefore, three-phase reversing of the stator assembly 3 is realized through the circuit board 6, and the power output of the motor is more stable and uniform.
The signal lines of the circuit board 6 are electrically connected to the inside of the cleaning robot through the through holes on the bottom surface 41.
This embodiment further comprises a washer 7, the washer 7 being arranged at the bottom of the stator assembly 3.
In this embodiment, the circuit board 6 is preferably disposed on the base 4, the gasket 7 is located on the west of the stator assembly 3 and above the circuit board 6, and the gasket 7 can form a gap between the stator assembly 3 and the circuit board 6 to avoid interference between the stator assembly and the circuit board 6.
The workflow of this embodiment is as follows;
when the cleaning robot works, the circuit board 6 and the copper wire 32 are electrified, the tooth grooves of the iron core 31 generate magnetic fields, magnetic force is formed between the magnetic fields and the magnet assembly 2, the upper cover 1 is driven to rotate, the motor shaft 5 is driven to rotate in the central shaft 42, three-phase reversing is achieved through the control of the circuit board 6 and the stator assembly 3, the upper cover 1 is enabled to rotate evenly, and power output of the motor is stable.
Example two:
the second embodiment of the invention provides a cleaning robot which comprises a robot body and a direct drive motor, wherein the direct drive motor is arranged in a driving wheel, a cleaning module, a washing base station or/and a dust suction module of the cleaning robot body.
The cleaning robot has the advantages of high working efficiency, low energy consumption, simple structure, low failure rate, long service life and low working noise.
The cleaning robot of the present invention includes, but is not limited to, a sweeper and a mopping machine, and is applied to private or public places such as homes, offices, airports, stations, convention centers, and the like.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A direct-drive motor is applied to a cleaning robot and is characterized by comprising an upper cover, a magnet assembly, a stator assembly and a base, wherein the upper cover is arranged outside the stator assembly; when the magnetic iron is electrified to work, the upper cover rotates around the stator assembly under the action of the magnetic force between the magnet assembly and the stator assembly.
2. A direct drive electric motor as set forth in claim 1 wherein said upper cover includes a top surface and a sidewall, said top surface being disposed at an upper end of said sidewall, said top surface being in movable engagement with said stator assembly.
3. A direct drive motor as claimed in claim 2 wherein said magnet assembly is surface mounted on said side wall or is mounted in a mounting groove in said side wall.
4. The direct drive motor of claim 2, further comprising a motor shaft, one end of the motor shaft being connected to the top surface, the upper cover being connected to the stator assembly via the motor shaft.
5. The direct drive motor as recited in claim 4 wherein said base comprises a bottom surface and a central shaft, said central shaft being fixed to said bottom surface, said stator assembly being nested on said central shaft.
6. The direct drive motor as claimed in claim 5 wherein a bearing chamber is provided in the middle of said central shaft, and said motor shaft is movably connected to said bearing chamber by a bearing.
7. The direct drive motor according to claim 5, wherein the stator assembly comprises an iron core and a copper wire, the copper wire is wound on the iron core, the iron core is sleeved on the central shaft, and the number of magnetic poles of the magnet assembly is greater than the number of tooth slots of the iron core.
8. The direct drive motor according to any one of claims 1 to 7, further comprising a circuit board for controlling commutation, electrically connected to the stator assembly, wherein the circuit board is provided with three connection terminals, the stator assembly is provided with three connection terminals, and the connection terminals are connected to the connection terminals in a one-to-one correspondence.
9. A direct drive electric machine as claimed in claim 8 further comprising a washer disposed at the bottom of the stator assembly.
10. A cleaning robot, characterized in that it comprises a robot body and a direct drive motor as claimed in any of claims 1-9, which direct drive motor is arranged in the drive wheels, the cleaning module, the rinsing station or/and the dust suction module of the cleaning robot body.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010569039.0A CN111600401A (en) | 2020-06-19 | 2020-06-19 | Direct-drive motor and cleaning robot applying same |
| PCT/CN2021/098582 WO2021254195A1 (en) | 2020-06-19 | 2021-06-07 | Direct drive motor and cleaning robot using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010569039.0A CN111600401A (en) | 2020-06-19 | 2020-06-19 | Direct-drive motor and cleaning robot applying same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111600401A true CN111600401A (en) | 2020-08-28 |
Family
ID=72191880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010569039.0A Pending CN111600401A (en) | 2020-06-19 | 2020-06-19 | Direct-drive motor and cleaning robot applying same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111600401A (en) |
| WO (1) | WO2021254195A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021254195A1 (en) * | 2020-06-19 | 2021-12-23 | 东莞市本末科技有限公司 | Direct drive motor and cleaning robot using same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100911832B1 (en) * | 2007-05-31 | 2009-08-13 | 주식회사 아모텍 | Slim Type Vacuum Inhaling Apparatus Having High Efficiency and Robot Cleaner Using the Same |
| CN201478976U (en) * | 2009-06-19 | 2010-05-19 | 建准电机工业股份有限公司 | Brushless direct current motor and stator thereof |
| CN204260663U (en) * | 2014-11-20 | 2015-04-15 | 江苏美的春花电器股份有限公司 | Dust catcher |
| CN111600401A (en) * | 2020-06-19 | 2020-08-28 | 东莞市本末科技有限公司 | Direct-drive motor and cleaning robot applying same |
-
2020
- 2020-06-19 CN CN202010569039.0A patent/CN111600401A/en active Pending
-
2021
- 2021-06-07 WO PCT/CN2021/098582 patent/WO2021254195A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021254195A1 (en) * | 2020-06-19 | 2021-12-23 | 东莞市本末科技有限公司 | Direct drive motor and cleaning robot using same |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021254195A1 (en) | 2021-12-23 |
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