CN114006503A - Electric tool containing motor stator and rotor intelligently controlled through circuit board - Google Patents
Electric tool containing motor stator and rotor intelligently controlled through circuit board Download PDFInfo
- Publication number
- CN114006503A CN114006503A CN202111409263.4A CN202111409263A CN114006503A CN 114006503 A CN114006503 A CN 114006503A CN 202111409263 A CN202111409263 A CN 202111409263A CN 114006503 A CN114006503 A CN 114006503A
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- CN
- China
- Prior art keywords
- circuit board
- rotor
- motor
- carbon brush
- stator
- 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
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
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- 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
- H02K13/10—Arrangements of brushes or commutators specially adapted for improving commutation
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- 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
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/28—Cooling of commutators, slip-rings or brushes e.g. by ventilating
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses an electric tool containing a motor stator and a motor which are intelligently controlled through a circuit board, which comprises an electric tool shell and a motor which is arranged in the electric tool shell and used for providing driving force, wherein the end part of the electric tool shell is provided with a transmission mechanism, one end of the transmission mechanism is fixedly connected with a motor shaft of the motor, the other end of the transmission mechanism is provided with a tool head, the electric tool shell is provided with a switch, the electric tool shell is internally provided with the circuit board, and the circuit board is respectively electrically connected with the motor and the switch, and the electric tool is characterized in that: the power supply of the rotor of the motor for providing the rotary motion power is controlled by the circuit board, a winding of the rotor is electrified to generate a fixed magnetic field, and the rotary magnetic field is generated by the stator controlled by the circuit board; the rotor of the invention forms a rotating magnetic field through the control of the circuit board, and the rotor does not need to be provided with the rare earth magnetic shoe, thereby saving a large amount of rare earth permanent magnetic materials, greatly saving the cost, and simultaneously preventing the rare earth magnetic shoe from adsorbing scrap iron.
Description
Technical Field
The invention relates to the technical field of motors, in particular to an electric tool which comprises a motor stator and a motor rotor which are intelligently controlled through a circuit board.
Background
The motor is applied to tools in various fields in life, the motor on a plurality of tools has a function of forward and reverse rotation when in use, particularly used electric drills or hammer tools, so a reversing device is arranged in the motor and consists of an electric brush and a reversing ring; the brush mostly adopts the carbon brush, and the carbon brush is mainly used for leading the rotor current required by the operation of the motor into the rotor coil through the connection with the commutation ring, providing an excitation power supply and then transmitting the excitation power supply to the rotor, and the rotor of the motor is equivalent to a rotary magnet, and the commutation task of the motor is realized through the carbon brush.
Because the carbon brush always has contact friction with the reversing ring due to the rotation of the rotor, the carbon brush is accompanied with abrasion in long-term relative rotation, so that the influence of uneven contact surface with the reversing ring, insufficient pressure of the carbon brush and other conditions is caused, and the carbon brush is often accompanied with sparking; meanwhile, most of the existing motors adopt a magnetic ring mode, the torque performance of the motor made in the mode is relatively low, magnetic interference can be generated to influence electronic components on the electric tool, the phenomenon of iron scrap sticking is easy to occur, and the safety and reliability are difficult to guarantee. In view of the above drawbacks, it is necessary to design an electric tool having a stator and a rotor of a motor intelligently controlled through a circuit board.
Disclosure of Invention
The invention aims to provide an electric tool with a motor stator and a motor rotor intelligently controlled through a circuit board, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a contain electric tool through circuit board intelligent control motor stator and rotor, includes the electric tool casing and sets up the motor that is used for providing drive power in the electric tool casing, the tip of electric tool casing is provided with drive mechanism, drive mechanism's one end and the motor shaft fixed connection of motor, tool bit is installed to drive mechanism's the other end, the switch has been seted up on the electric tool casing, be provided with the circuit board in the electric tool casing, the circuit board respectively with motor, switch electric connection, its characterized in that: the power supply of the rotor of the motor providing the rotary motion power is controlled by the circuit board, after the winding of the rotor is electrified, a fixed magnetic field can be generated, and the rotary magnetic field is generated by the stator controlled by the circuit board.
Preferably, the motor comprises a motor shell, a stator winding and a rotor winding which is rotatable relative to the stator winding, a motor shaft is arranged in the middle of the motor shell, the left side and the right side of the motor shaft are respectively connected with a left bearing and a right bearing, and the left bearing and the right bearing are respectively installed on two sides of the motor shell.
Preferably, the middle part of the motor shell is fixedly connected with a stator winding, the middle part of the stator winding is provided with a rotor winding, the rotor winding is fixed on a motor shaft, a power connector is fixedly installed on the motor shaft through a gasket, and the gasket is made of a thermosetting material or a thermoplastic material.
Preferably, the power connector includes first go-between and second go-between, first go-between and second go-between all are the ring form, first go-between and second go-between are made by copper material and are formed.
Preferably, install first connecting piece on the first connecting ring, the one end of first connecting piece is connected with the one end of rotor winding through first rotor connecting wire, the other end and the first carbon brush butt of first connecting piece, first carbon brush is installed in the inside of first carbon brush holder, the inside at motor housing is installed to first carbon brush holder, is provided with first carbon brush spring between first carbon brush and the first carbon brush holder, and first carbon brush passes through first connecting wire and is connected with the circuit board.
Preferably, the second connecting ring is provided with a second connecting piece, one end of the second connecting piece is connected with the other end of the rotor winding through a second rotor connecting wire, the other end of the second connecting piece is abutted to a second carbon brush, the second carbon brush is arranged in a second carbon brush holder, the second carbon brush holder is arranged in the motor shell, a second carbon brush spring is arranged between the second carbon brush and the second carbon brush holder, and the second carbon brush is connected with the circuit board through a second connecting wire.
Preferably, the first carbon brush and the second carbon brush are symmetrically arranged on the power supply connector in a staggered manner.
Preferably, one end of the stator winding is connected with the circuit board through a first stator connecting wire, the other end of the stator winding is connected with the circuit board through a second stator connecting wire, and the circuit board is provided with an electronic component.
Compared with the prior art, the electric tool comprises a motor stator and a motor which are intelligently controlled through a circuit board, the circuit board is supplied with power through a battery pack, the circuit board supplies power to a stator winding, the stator winding is electrified to generate a static magnetic field, the circuit board supplies power to a first carbon brush and a second carbon brush and forms a loop through contact with a first connecting sheet and a second connecting sheet so as to supply power to the rotor winding, the electrified rotor winding generates electric power in the static magnetic field to push the rotor winding to rotate to form a rotating magnetic field, so that a motor shaft can rotate by taking the axis of the motor shaft as the center, and a transmission mechanism and a tool head are driven to rotate; the rotor of the invention forms a rotating magnetic field through the control of the circuit board, the rotor does not need to be provided with the rare earth magnetic shoe, thereby saving a large amount of rare earth permanent magnet material, greatly saving the cost, simultaneously preventing the rare earth magnetic shoe from adsorbing scrap iron, solving the inherent defect of the existing motor, and being capable of adapting to the severe environment of scrap iron everywhere in a factory; the motor does not need a commutator for commutation, avoids commutation sparks generated in the commutation process, enables the motor to run stably, and prolongs the service life of the motor; the power connector has simple process, does not need to be provided with a commutator, can be made small in diameter because of no need of the commutator, reduces the rotating speed and reduces the abrasion of the carbon brush, thereby prolonging the service life of the carbon brush; according to the invention, the first carbon brush and the second carbon brush are symmetrically arranged in a staggered manner, irregular turbulent air is easily formed, the cooling effect is obviously improved, and the service life of the motor is effectively prolonged.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:
FIG. 1 is a schematic structural diagram of an electric tool with a stator and a rotor of a motor intelligently controlled through a circuit board according to the invention;
fig. 2 is a schematic structural diagram of a motor in an electric tool with a motor stator and a motor rotor intelligently controlled through a circuit board according to the invention.
In the drawings:
1. an electric tool housing; 2. a transmission mechanism; 3. a motor; 5. a switch; 7. a circuit board; 8. a battery pack; 9. a tool head; 10. a motor housing; 11. a motor shaft; 12. a left bearing; 13. a right bearing; 14. a stator winding; 15. a rotor winding; 16. a power connector; 17. a first connecting ring; 18. a second connection ring; 19. a first connecting piece; 20. a first rotor connection line; 21. a first carbon brush; 22. a first carbon brush holder; 23. a first carbon brush spring; 24. a first connecting line; 25. a second connecting sheet; 26. a second rotor connecting line; 27. a second carbon brush; 28. a second carbon brush holder; 29. a second carbon brush spring; 30. a second connecting line; 31. a first stator connection line; 32. a second stator connection line.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and 2, the present invention provides a technical solution: an electric tool containing a motor stator and a motor which are intelligently controlled through a circuit board comprises an electric tool shell 1 and a motor 3 which is arranged in the electric tool shell 1 and used for providing driving force, wherein a transmission mechanism 2 is arranged at the end part of the electric tool shell 1, one end of the transmission mechanism 2 is fixedly connected with a motor shaft of the motor 3, a tool head 9 is arranged at the other end of the transmission mechanism 2, a switch 5 is arranged on the electric tool shell 1, a circuit board 7 is arranged in the electric tool shell 1, the circuit board 7 is respectively electrically connected with the motor 3 and the switch 5, a power supply of the rotor of the motor 3 providing rotary motion power is controlled by the circuit board, a fixed magnetic field can be generated after a winding of the rotor is electrified, the rotary magnetic field is generated by the stator controlled by the circuit board, and a battery pack 8 is also arranged in the electric tool shell 1, the battery pack 8 is composed of a plurality of batteries, and the battery pack 8 is electrically connected with the switch 5 and the circuit board 7 and supplies power to the switch 5 and the circuit board 7.
The motor 3 in this embodiment includes a motor housing 10, a stator winding, and a rotor winding rotatable relative to the stator winding, wherein a motor shaft 11 is disposed in the middle of the motor housing 10, the left and right sides of the motor shaft 11 are respectively connected with a left bearing 12 and a right bearing 13, the left bearing 12 and the right bearing 13 are respectively mounted on the two sides of the motor housing 10, the middle of the motor housing 10 is fixedly connected with a stator winding 14, the middle of the stator winding 14 is provided with a rotor winding 15, the rotor winding 15 is fixed on the motor shaft 11, the motor shaft 11 is fixedly mounted with a power connector 16 through a gasket, the gasket is made of a thermosetting material or a thermoplastic material,
in this embodiment the power connector 16 includes first connecting ring 17 and second connecting ring 18, and first connecting ring 17 and second connecting ring 18 set up independently from each other, first connecting ring 17 and second connecting ring 18 all are the ring form, first connecting ring 17 and second connecting ring 18 are formed by the preparation of copper material, install first connecting piece 19 on the first connecting ring 17, the one end of first connecting piece 19 is passed through first rotor connecting wire 20 and is connected with the one end of rotor winding 15, the other end and the first carbon brush 21 butt of first connecting piece 17, the inside at first carbon brush frame 22 is installed to first carbon brush 21, the inside at motor housing 10 is installed to first carbon brush frame 22, is provided with first carbon brush spring 23 between first carbon brush 1 and the first carbon brush frame 22, and first carbon brush 21 is connected with carbon brush circuit board 7 through first connecting wire 24.
In this embodiment, the second connection ring 18 is provided with a second connection piece 25, one end of the second connection piece 25 is connected to the other end of the rotor winding 15 through a second rotor connection line 26, the other end of the second connection piece 25 abuts against a second carbon brush 27, the second carbon brush 27 is installed inside a second carbon brush holder 28, the second carbon brush holder 28 is installed inside the motor housing 10, a second carbon brush spring 29 is arranged between the second carbon brush holder 27 and the second carbon brush holder 28, and the second carbon brush 27 is connected to the circuit board 7 through a second connection line 30.
In this embodiment, the first carbon brush 21 and the second carbon brush 27 are symmetrically arranged on the power connector 16 in a staggered manner, and the first carbon brush 21 and the second carbon brush 27 are symmetrically arranged in a staggered manner, so that irregular turbulent air is easily formed, the cooling effect is remarkably improved, and the service life of the motor is effectively prolonged.
In this embodiment, one end of the stator winding 14 is connected to the circuit board 7 through a first stator connecting line 31, the other end of the stator winding 14 is connected to the circuit board 7 through a second stator connecting line 32, and the circuit board 7 is mounted with an electronic component.
When the invention is used, firstly, the circuit board 7 is supplied with power through the battery pack 8, the circuit board 7 supplies power to the stator winding 14, the stator winding 14 is electrified to generate a static magnetic field, then the circuit board 7 supplies power to the first carbon brush 21 and the second carbon brush 27 and forms a loop through the contact with the first connecting sheet 19 and the second connecting sheet 25 so as to supply power to the rotor winding 15, the electrified rotor winding 15 generates electric power in the static magnetic field to push the rotor winding 15 to rotate to form a rotating magnetic field, so that the motor shaft 11 can rotate by taking the axis of the motor shaft 11 as the center, and the transmission mechanism 2 and the tool head 9 are driven to rotate.
The rotor of the invention forms a rotating magnetic field through the control of the circuit board, the rotor does not need to be provided with the rare earth magnetic shoe, thereby saving a large amount of rare earth permanent magnet material, greatly saving the cost, simultaneously preventing the rare earth magnetic shoe from adsorbing scrap iron, solving the inherent defect of the existing motor, and being capable of adapting to the severe environment of scrap iron everywhere in a factory; the motor does not need a commutator for commutation, avoids commutation sparks generated in the commutation process, enables the motor to run stably, and prolongs the service life of the motor; the power connector has simple process, does not need to be provided with a commutator, can be made small in diameter because of no need of the commutator, reduces the rotating speed and reduces the abrasion of the carbon brush, thereby prolonging the service life of the carbon brush.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a contain electric tool through circuit board intelligent control motor stator and rotor, includes electric tool casing (1) and sets up motor (3) that are used for providing drive power in electric tool casing (1), the tip of electric tool casing (1) is provided with drive mechanism (2), the one end of drive mechanism (2) and the motor shaft fixed connection of motor (3), instrument head (9) are installed to the other end of drive mechanism (2), switch (5) have been seted up on electric tool casing (1), be provided with circuit board (7) in electric tool casing (1), circuit board (7) respectively with motor (3), switch (5) electric connection, its characterized in that: the power supply of the rotor of the motor (3) providing the rotary motion power is controlled by the circuit board, after the winding of the rotor is electrified, a fixed magnetic field can be generated, and the rotary magnetic field is generated by the stator controlled by the circuit board.
2. The power tool with the stator and the rotor intelligently controlled by the circuit board according to the claim 1 is characterized in that: the motor (3) comprises a motor shell (10), a stator winding (14) and a rotor winding (15) which is rotatable relative to the stator winding (14), a motor shaft (11) is arranged in the middle of the motor shell (10), the left side and the right side of the motor shaft (11) are respectively connected with a left bearing (12) and a right bearing (13), and the left bearing (12) and the right bearing (13) are respectively installed on two sides of the motor shell (10).
3. The power tool with the stator and the rotor intelligently controlled by the circuit board according to the claim 2 is characterized in that: the middle part fixedly connected with stator winding (14) of motor casing (10), the middle part of stator winding (14) is provided with rotor winding (15), rotor winding (15) are fixed on motor shaft (11), have power connector (16) through gasket fixed mounting on motor shaft (11), the gasket is formed by thermosetting material or thermoplastic material preparation.
4. The power tool with the stator and the rotor intelligently controlled by the circuit board according to the claim 3 is characterized in that: power connector (16) include first go-between (17) and second go-between (18), first go-between (17) and second go-between (18) all are the ring form, first go-between (17) and second go-between (18) are formed by the preparation of copper material.
5. The electric tool with the stator and the rotor intelligently controlled by the circuit board according to the claim 4 is characterized in that: install first connecting piece (19) on first connecting ring (17), the one end of first connecting piece (19) is connected with the one end of rotor winding (15) through first rotor connecting wire (20), the other end and first carbon brush (21) butt of first connecting piece (17), the inside at first carbon brush frame (22) is installed in first carbon brush frame (21), the inside at motor housing (10) is installed in first carbon brush frame (22), is provided with first carbon brush spring (23) between first carbon brush (21) and first carbon brush frame (22), and first carbon brush (21) are connected with circuit board (7) through first connecting wire (24).
6. The electric tool with the stator and the rotor intelligently controlled by the circuit board according to the claim 4 is characterized in that: install second connection piece (25) on second go-between (18), the one end of second connection piece (25) is passed through second rotor connecting wire (26) and is connected with the other end of rotor winding (15), the other end and second carbon brush (27) butt of second connection piece (25), the inside at second carbon brush frame (28) is installed in second carbon brush frame (27), the inside at motor housing (10) is installed in second carbon brush frame (28), is provided with second carbon brush spring (29) between second carbon brush (27) and second carbon brush frame (28), and second carbon brush (27) are connected with circuit board (7) through second connecting wire (30).
7. The power tool with the stator and the rotor intelligently controlled by the circuit board according to the claim 5, characterized in that: the first carbon brush (21) and the second carbon brush (27) are symmetrically arranged on the power connector (16) in a staggered mode.
8. The power tool with the stator and the rotor intelligently controlled by the circuit board according to the claim 2 is characterized in that: one end of the stator winding (14) is connected with the circuit board (7) through a first stator connecting wire (31), the other end of the stator winding (14) is connected with the circuit board (7) through a second stator connecting wire (32), and electronic components are mounted on the circuit board (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111409263.4A CN114006503A (en) | 2021-11-25 | 2021-11-25 | Electric tool containing motor stator and rotor intelligently controlled through circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111409263.4A CN114006503A (en) | 2021-11-25 | 2021-11-25 | Electric tool containing motor stator and rotor intelligently controlled through circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114006503A true CN114006503A (en) | 2022-02-01 |
Family
ID=79930221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111409263.4A Pending CN114006503A (en) | 2021-11-25 | 2021-11-25 | Electric tool containing motor stator and rotor intelligently controlled through circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114006503A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101224571A (en) * | 2007-01-19 | 2008-07-23 | 苏州宝时得电动工具有限公司 | Hand-held electric tool |
| CN112769299A (en) * | 2021-02-10 | 2021-05-07 | 苏州美力工具科技有限公司 | Rare earth-free motor |
-
2021
- 2021-11-25 CN CN202111409263.4A patent/CN114006503A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101224571A (en) * | 2007-01-19 | 2008-07-23 | 苏州宝时得电动工具有限公司 | Hand-held electric tool |
| CN112769299A (en) * | 2021-02-10 | 2021-05-07 | 苏州美力工具科技有限公司 | Rare earth-free motor |
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