CN201669691U - Split type brushless electric tool - Google Patents
Split type brushless electric tool Download PDFInfo
- Publication number
- CN201669691U CN201669691U CN2010201935193U CN201020193519U CN201669691U CN 201669691 U CN201669691 U CN 201669691U CN 2010201935193 U CN2010201935193 U CN 2010201935193U CN 201020193519 U CN201020193519 U CN 201020193519U CN 201669691 U CN201669691 U CN 201669691U
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- control circuit
- microprocessor
- motor
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Abstract
The utility model relates to a split type brushless electric tool, relates to an electric tool. The split type brushless electric tool is provided, comprising a main body, a motor rotor, a motor stator, a transmission gear, a control circuit and a motor switch; the transmission gear is respectively connected with a motor shaft and a cutter; the control circuit is installed in the box body; the box body is separated from the main body; the control output signal end of the control circuit is connected with the motor switch through a lead; and the motor switch is installed on the main body. The control circuit is provided with a filter circuit, a rectification circuit, a constant voltage control circuit, a microprocessor, a switching circuit, an output circuit, an overcurrent detection circuit and a speed control circuit; the output end of the filter circuit is connected with the input end of the rectification circuit; the input end of the constant voltage control circuit is connected with the output end of the rectification circuit; the input end of the microprocessor is connected with the output end of the constant voltage control circuit; the input end of the switching circuit is connected with the output end of the microprocessor; the output end of the switching circuit is respectively connected with the motor and the overcurrent detection circuit through the output circuit; the output end of the overcurrent detection circuit is connected with the switching circuit; and the output end of the speed control circuit is connected with the microprocessor.
Description
Technical field
The utility model relates to a kind of electric tool, especially relates to a kind of split type brushless electric instrument.
Background technology
Traditional electric tool mainly is that single phase series motor is carried out, the applicant discloses a kind of hand held electric tool brushless motor in Chinese patent CN201018444, pulse motor and reduction gearing and pulse signal circuit are installed in hand-held electric tool handle, by AC rectification is become direct current, the pulse current that direct current is converted to frequency adjustable comes drive motor again, and this motor has sound construction, velocity-stabilization is adjustable, energy-conservation, characteristics such as noise is low, the life-span is long.
Summary of the invention
The purpose of this utility model is to provide a kind of split type brushless electric instrument.
The utility model is provided with main body, rotor, motor stator, travelling gear, control circuit, motor switch, rotor and motor stator are located at the main body inner chamber, travelling gear is connected with cutter with motor shaft respectively, control circuit is located in the box body, box body and main body split, the control output signal end of control circuit is connected with motor switch by lead, and motor switch is located on the main body.
Described travelling gear can adopt straight-tooth gear, angular gear or angle gear etc., can adopt straight-tooth gear or angular gear according to the needs of each workplace, also can adopt the angle gear, changes output shaft into vertical rotation.
Described control circuit is provided with filter circuit, rectification circuit, mu balanced circuit, microprocessor, on-off circuit, output circuit, over-current detection circuit and alignment circuit, filter circuit output termination rectification circuit input end, mu balanced circuit input termination rectification circuit output end, microprocessor input termination circuit output end of pressure-stabilizing, on-off circuit input termination output end of microprocessor, on-off circuit output termination output circuit input, the output circuit output connects motor and over-current detection circuit input respectively, over-current detection circuit output termination on-off circuit, alignment circuit output termination microprocessor input port.
Described control circuit is located on the circuit board, and circuit board is located in the box body, and the power device of control circuit is installed on the heat sink, and cooling fan is housed on the heat sink.
Compare with existing brushless electric instrument, control circuit of the present utility model and motor and drive disk assembly are separately, therefore have in light weight, characteristics such as volume is little, sound construction, velocity-stabilization, adjustment is flexible to operation, energy-conservation, noise is low, the life-span is long, more be applicable to various occasions.Control circuit of the present utility model is that AC power is rectified into dc source, becomes frequency and the adjustable alternating current of pulsewidth by inverter circuit again behind capacitor filtering.Be connected with lead between control circuit and the power tool body, switch is located on the power tool body.
Description of drawings
Fig. 1 is that the structure of the utility model embodiment is formed schematic diagram.
Fig. 2 is the control circuit composition frame chart of the utility model embodiment.
Fig. 3 is that the circuit of the utility model embodiment is formed schematic diagram.
Fig. 4 is the machine operation schematic diagram of the utility model embodiment.
The specific embodiment
Referring to Fig. 1～3, the utility model embodiment is provided with main body 1, rotor 2, motor stator 3, travelling gear (reduction gearing) 8, control circuit 5 and motor switch 7, rotor 2 and motor stator 3 are located at main body 1 inner chamber, travelling gear 8 is connected with cutter 9 with motor shaft respectively, control circuit is located in the box body, box body and main body split, the control output signal end of control circuit is connected with motor switch 7 by lead 4, and motor switch 7 is located on the main body 1.Mark 6 among Fig. 1 is an attaching plug.Described travelling gear can adopt straight-tooth gear, angular gear or angle gear etc., can adopt straight-tooth gear or angular gear according to the needs of each workplace, also can adopt the angle gear, changes output shaft into vertical rotation.
Described control circuit 5 is provided with filter circuit 10, rectification circuit 11, mu balanced circuit 12, microprocessor 13, on-off circuit 14, output circuit 15, over-current detection circuit 17 and alignment circuit 16, filter circuit 10 output termination rectification circuits 11 inputs, mu balanced circuit 12 input termination rectification circuits 11 outputs, microprocessor 13 input termination mu balanced circuits 12 outputs, on-off circuit 14 input termination microprocessors 13 outputs, on-off circuit 14 output termination output circuits 15 inputs, output circuit 15 outputs connect motor 18 and over-current detection circuit 17 inputs respectively, over-current detection circuit 17 output termination on-off circuits 14, alignment circuit 16 output termination microprocessors 13 input ports.
Described control circuit 5 is located on the circuit board, and circuit board is located in the box body, and the power device of control circuit 5 is installed on the heat sink, and cooling fan is housed on the heat sink.
The AC220V alternating current is rectified into direct current through rectification circuit 11 again by filter circuit 10, and one the tunnel directly connects on-off circuit 14, and the working power of microprocessor 13, alignment circuit 16 and over-current detection electric current 17 is supplied with on another road behind voltage-stabilized power supply 12 lowering and stabilizing blood pressures.
It below is a kind of implementation method of the present utility model.The 1st, 6 pin of microprocessor 13 are output current at first, coupled switching tube Q1, Q6 conducting, the 3rd group of coil on the motor stator has electric current to pass through, the magnetic field that coil produces acts on the squirrel-cage conductor on the rotor, make it produce electric current and magnetic field, the thrust that two magnetic field interactions produce makes rotor rotation.After the time of setting, the 1st, 6 pin of microprocessor 13 stop output current, and switching tube Q1, Q6 end; The 2nd, 6 pin output currents of microprocessor 13, switching tube Q2, Q6 conducting, second group of coil on the motor stator has electric current to pass through, and the magnetic field that coil produces acts on the squirrel-cage conductor on the rotor, make it produce electric current and magnetic field, the thrust that two magnetic field interactions produce makes rotor rotation.The 2nd, 6 pin of microprocessor 13 stop output current after the time of setting, and switching tube Q2, Q6 end; The 4th, 2 pin output currents of microprocessor 13, switching tube Q4, Q2 conducting, first group of coil on the motor stator has electric current to pass through, and the magnetic field that coil produces acts on the squirrel-cage conductor on the rotor, make it produce electric current and magnetic field, the thrust that two magnetic field interactions produce makes rotor rotation.After the time of setting, the 4th, 2 pin of microprocessor 13 stop output current, and switching tube Q4, Q2 end; The 4th, 3 pin output currents of microprocessor 13, coupled switching tube Q4, Q3 conducting, the 3rd group of coil on the motor stator has electric current to pass through, the magnetic field that coil produces acts on the squirrel-cage conductor on the rotor, make it produce electric current and magnetic field, the thrust that two magnetic field interactions produce makes rotor rotation.After the time of setting, the 4th, 3 pin of microprocessor 13 stop output current, and switching tube Q4, Q3 end; The 5th, 3 pin output currents of microprocessor 13, switching tube Q5, Q3 conducting, second group of coil on the motor stator has electric current to pass through, and the magnetic field that coil produces acts on the squirrel-cage conductor on the rotor, make it produce electric current and magnetic field, the thrust that two magnetic field interactions produce makes rotor rotation.After the time of setting, the 5th, 3 pin of microprocessor 13 stop output current, and switching tube Q5, Q3 end; The 1st, 5 pin output currents of microprocessor 13, switching tube Q1, Q5 conducting, first group of coil on the motor stator has electric current to pass through, and the magnetic field that coil produces acts on the squirrel-cage conductor on the rotor, make it produce electric current and magnetic field, the thrust that two magnetic field interactions produce makes rotor rotation.By that analogy, go round and begin again, rotate in the alternating magnetic field that the coil of rotor on motor stator produces.If should be p-m rotor to above-mentioned rotor, it also is fully passable that the method for ordering about of circuit is made a little modifications.Alignment circuit can change aanalogvoltage with potentiometer, gives microprocessor through the AD conversion with data signal again and calculates that change to the switching frequency of switching tube just can speed governing.Over-current detection circuit 17 detects the size of current of output circuit 15, when electric current surpasses setting value in official hour be, over-current detection circuit 17 output signals, the switching tube in the on-off circuit 14 all ends, and motor has just stopped.
The above is a kind of implementation method of the present utility model, every foundation technical spirit of the present utility model to above implementing regulations carry out any simply repair this, equivalent variations and modification, all belong in the scope of the technical solution of the utility model.
Claims (4)
1. split type brushless electric instrument, it is characterized in that being provided with main body, rotor, motor stator, travelling gear, control circuit, motor switch, rotor and motor stator are located at the main body inner chamber, travelling gear is connected with cutter with motor shaft respectively, control circuit is located in the box body, box body and main body split, the control output signal end of control circuit is connected with motor switch by lead, and motor switch is located on the main body.
2. a kind of split type brushless electric instrument as claimed in claim 1 is characterized in that described travelling gear is straight-tooth gear, angular gear or angle gear.
3. a kind of split type brushless electric instrument as claimed in claim 1, it is characterized in that described control circuit is provided with filter circuit, rectification circuit, mu balanced circuit, microprocessor, on-off circuit, output circuit, over-current detection circuit and alignment circuit, filter circuit output termination rectification circuit input end, mu balanced circuit input termination rectification circuit output end, microprocessor input termination circuit output end of pressure-stabilizing, on-off circuit input termination output end of microprocessor, on-off circuit output termination output circuit input, the output circuit output connects motor and over-current detection circuit input respectively, over-current detection circuit output termination on-off circuit, alignment circuit output termination microprocessor input port.
4. a kind of split type brushless electric instrument as claimed in claim 1 is characterized in that described control circuit is located on the circuit board, and circuit board is located in the box body, and the power device of control circuit is installed on the heat sink, and cooling fan is housed on the heat sink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201935193U CN201669691U (en) | 2010-05-12 | 2010-05-12 | Split type brushless electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201935193U CN201669691U (en) | 2010-05-12 | 2010-05-12 | Split type brushless electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201669691U true CN201669691U (en) | 2010-12-15 |
Family
ID=43327103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201935193U Expired - Fee Related CN201669691U (en) | 2010-05-12 | 2010-05-12 | Split type brushless electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201669691U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102882341A (en) * | 2012-10-18 | 2013-01-16 | 王添辉 | Handheld brushless electric tool with outer rotor |
| WO2018108090A1 (en) * | 2016-12-14 | 2018-06-21 | 南京德朔实业有限公司 | Electric tool |
| US11387769B2 (en) | 2016-12-14 | 2022-07-12 | Nanjing Chervon Industry Co., Ltd. | Power tool |
-
2010
- 2010-05-12 CN CN2010201935193U patent/CN201669691U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102882341A (en) * | 2012-10-18 | 2013-01-16 | 王添辉 | Handheld brushless electric tool with outer rotor |
| CN102882341B (en) * | 2012-10-18 | 2015-01-07 | 王添辉 | Handheld brushless electric tool with outer rotor |
| WO2018108090A1 (en) * | 2016-12-14 | 2018-06-21 | 南京德朔实业有限公司 | Electric tool |
| US11387769B2 (en) | 2016-12-14 | 2022-07-12 | Nanjing Chervon Industry Co., Ltd. | Power tool |
| US11843340B2 (en) | 2016-12-14 | 2023-12-12 | Nanjing Chervon Industry Co., Ltd. | Power tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101215 Termination date: 20120512 |