CN214818318U - Electric tool - Google Patents
Electric tool Download PDFInfo
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- CN214818318U CN214818318U CN202023059694.6U CN202023059694U CN214818318U CN 214818318 U CN214818318 U CN 214818318U CN 202023059694 U CN202023059694 U CN 202023059694U CN 214818318 U CN214818318 U CN 214818318U
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Abstract
The utility model discloses an electric tool. The method comprises the following steps: accept the motor in the shell, connect the motor and control motor moving the control unit, be provided with the motor state switching button and the multiple display state pilot lamp that shows the motor state of switching motor running state on the shell, the pilot lamp is connected to the control unit and is controlled by the control unit to shine and go out, the control unit is connected with the mode switching circuit, motor state switching button is operated, the mode switching circuit switches on and exports trigger signal to the control unit, the control unit receives trigger signal control motor and switches over between corotation, reversal and auto-lock state, and the control pilot lamp is corresponding to the current state of the bright display motor. The utility model discloses an adopt electronic type switch to realize the switching of motor state and realize the instruction that corresponds, instrument longe-lived.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to an electric tool, in particular to electric tool with pilot lamp is instructed.
[ background of the invention ]
The existing electric tool usually adopts a mechanical switch to realize the function switching of the electric tool, for example, a drilling tool realizes the forward and reverse rotation state switching of a motor through a mechanical deflector rod switch, and does not distinguish and display corresponding states, so that the electric tool is easy to damage, a user cannot well distinguish the current motor state, and meanwhile, the electric tool does not have a self-locking protection function.
Therefore, there is a need for a power tool with a long life and capable of indicating the status of the motor, so as to solve the above problems.
[ Utility model ] content
To the not enough of prior art, the utility model aims to provide a longe-lived and can realize the electric tool of motor state indication.
The utility model provides a prior art problem can adopt following technical scheme: a power tool, comprising: the motor state switching device comprises a shell, a motor and a control unit, wherein the motor is contained in the shell, the control unit is connected with the motor and controls the motor to run, a motor state switching button for switching the running state of the motor and a plurality of display state indicating lamps for displaying the running state of the motor are arranged on the shell, the indicating lamps are connected to the control unit and controlled by the control unit to be turned on and off, the control unit is connected with a mode switching circuit, the motor state switching button is operated, the mode switching circuit is switched on and outputs a trigger signal to the control unit, the control unit receives the trigger signal to control the motor to be switched among three states of forward rotation, reverse rotation and self locking, and the indicating lamps are correspondingly switched on to correspondingly display the current state of the motor.
The further improvement scheme is as follows: the shell is provided with a plurality of display windows which are arranged in parallel and respectively contain the indicating lamps, the indicating lamps comprise three independent indicating lamps, namely a forward rotation indicating lamp for displaying in a forward rotation state, a reverse rotation indicating lamp for displaying in a reverse rotation state and a self-locking indicating lamp for displaying in a motor self-locking state, the indicating lamps are light emitting diodes, the positive pole of each indicating lamp is connected with a pull-up power supply, the negative pole of each indicating lamp is connected with the control unit, and the indicating lamps are turned on when receiving low-level signals sent by the control unit.
The further improvement scheme is as follows: the mode switching circuit comprises a switch corresponding to the motor state switching button, one end of the switch is connected to a pull-up power supply, the other end of the switch is grounded through a resistor and is connected to the control unit, the motor state switching button is operated, and the control unit receives a high-level signal.
The further improvement scheme is as follows: the switch is a key switch, the key switch is pressed, the control unit detects the high level signal, the control unit controls the motor to be switched from the current state to another state, and controls the indicator lamp corresponding to the current state to be turned off and the indicator lamp corresponding to the other state to be turned on.
The further improvement scheme is as follows: the control unit is stored with a preset time value, detects the high level signal, and controls the motor to be switched into a self-locking state and controls the self-locking indicator lamp to be on when the duration time of the high level signal exceeds the preset time value.
The further improvement scheme is as follows: the mode switching circuit comprises a switch corresponding to the motor state switching button, one end of the switch is grounded through a resistor, the other end of the switch is connected with an upper pull power supply and connected to the control unit, the motor state switching button is operated, and the control unit receives a low level signal.
The further improvement scheme is as follows: the motor state switching button is a key switch, the control unit detects the low level signal when the key switch is pressed, the control unit controls the motor to be switched from the current state to the other state, and controls the indicator lamp corresponding to the current state to be turned off and the indicator lamp corresponding to the other state to be turned on.
The further improvement scheme is as follows: the control unit is stored with a preset time value, detects the low level signal, and controls the motor to be switched into a self-locking state and controls the self-locking indicator lamp to be on when the duration of the low level signal exceeds the preset time value.
The further improvement scheme is as follows: the motor is connected with the control unit through a driving module, and the control unit controls the driving module to drive the motor according to the state of the motor state switching button.
The further improvement scheme is as follows: the trigger is installed to the shell, the control unit storage has the duty cycle that trigger pulling amount corresponds, the control unit is according to the duty cycle control the rotational speed of motor.
Compared with the prior art, the utility model discloses following beneficial effect has: the electric tool is provided with a motor state switching button and an indicator lamp for displaying the motor state, the control unit is connected with a mode switching circuit, the motor state switching button is operated, the mode switching circuit is conducted and sends a trigger signal to the control unit, the control unit receives the trigger signal to control the motor to switch among forward rotation, reverse rotation and self-locking states, and the indicator lamp is controlled to correspondingly light and display the current state of the motor. The electronic switch is adopted to realize the switching of the motor state and realize the corresponding indication, and the tool has long service life.
[ description of the drawings ]
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings:
FIG. 1 is a structural view of the electric power tool of the present invention;
fig. 2 is a cross-sectional view of the power tool of the present invention;
fig. 3 is a circuit diagram of an electric power tool according to a first embodiment of the present invention;
fig. 4 is a circuit diagram of an electric power tool according to a second embodiment of the present invention.
The meaning of the reference symbols in the figures:
100. electric tool 1, shell 11, motor 12, trigger 13, integrated switch 2, control circuit board 3, battery 4, control unit 41, drive module 42, zero-crossing detection circuit 5, mode switching circuit 51, motor state switching button 52, switch 6, forward rotation indicator lamp 7, reverse rotation indicator lamp 8, self-locking indicator lamp
[ detailed description ] embodiments
The present invention will be described in further detail with reference to the accompanying drawings and embodiments.
Please refer to fig. 1 and fig. 2, which are the present invention, the electric tool 100 is an electric drill, the electric tool 100 includes a housing 1, a motor 11 and a control circuit board 2 contained in the housing 1, a trigger 12 installed on the housing 1, and a battery 3 for supplying power to the motor, the control circuit board 2 includes a control unit 4 for connecting the motor 11 and controlling the motor 11, the housing 1 is further provided with a motor state switching button 51 for switching the motor operation state and a plurality of display windows for respectively containing an indicator light for displaying the motor state, the indicator light is connected to the control unit 4 and controlled by the control unit 4 to turn on or off. The trigger 12 is correspondingly provided with an integrated switch 13, the integrated switch 13 is connected with the control unit 4, the motor 11 is connected with the control unit 4, and the trigger 12 controls the starting and stopping of the motor 11 and can regulate the speed of the motor 11. The control unit 4 is connected with a mode switching circuit 5, the motor state switching button 51 is operated, the mode switching circuit 5 is switched on and outputs a trigger signal to the control unit 4, and the control unit 4 receives the trigger signal to control the motor 11 to switch between the forward rotation state, the reverse rotation state and the self-locking state and control the indicator lamp to correspondingly light and display.
As shown in fig. 3, in order to implement the first embodiment of the present invention, the motor is connected to the control unit 4 through a driving module 41, the driving module 41 includes an upper arm and a lower arm, the upper arm includes switching tubes Q1, Q2, and Q3, the lower arm includes switching tubes Q4, Q5, and Q6, and each switching tube is connected in parallel with diodes D1 to D6 in a reverse direction; the motor is a brushless motor, the brushless motor comprises a first phase winding U, a second phase winding V and a third phase winding W, each phase winding is connected end to end, and the windings of the motor can also be in star connection. The control unit 4 is connected to the motor 11 through a zero-crossing detection circuit 42, and is configured to detect a position of the motor 11 and a motor rotation speed. The mode switching circuit 5 includes a switch 52 corresponding to the motor state switching button 51, and one end of the switch 52 is connected to a pull-up power supply, and the other end is grounded through a resistor and connected to the control unit 4. The indicating lamps comprise three independent indicating lamps, namely a forward rotation indicating lamp 6 for displaying in a forward rotation state, a reverse rotation indicating lamp 7 for displaying in a reverse rotation state and a self-locking indicating lamp 8 for displaying in a motor self-locking state. The shell is provided with marks corresponding to the indicator lamps, in the embodiment, the lower part of the forward rotation indicator lamp is marked with a forward character, the lower part of the reverse rotation indicator lamp is marked with a reverse character, the lower part of the self-locking indicator lamp is marked with a self character, and other marking modes can be provided. The indicating lamps are light emitting diodes, the cathodes of the light emitting diodes are respectively connected to the control unit 4, the anodes of the light emitting diodes are connected with a pull-up power source, and the control unit 4 respectively sends low level signals to the forward rotation indicating lamp 6, the reverse rotation indicating lamp 7 or the self-locking indicating lamp 8, namely the corresponding indicating lamps are on. The control unit 4 stores a duty ratio corresponding to the pulling amount of the trigger 12, the motor state switching button 51 selects a motor rotation state and controls the trigger 12, and the control unit 4 selects a corresponding duty ratio according to the pulling amount of the trigger 12 to control the rotation speed of the motor.
The motor state switching button 5 is pressed, the switch 52 is closed, the control unit 4 receives a high level signal, the motor state switching button 51 is not pressed, and the control unit 4 receives a low level signal. The motor state switching button 51 is a key switch, namely when pressure is applied, the switch is closed; when the pressure is removed, the switch is opened. The control unit 4 has a memory function of determining whether the motor state switching button 51 is pressed, and detecting the pressing, i.e., changing the state of the motor 11. When the motor state switching button 51 is pressed, the control unit 4 detects that a trigger signal is a high level signal, controls the forward rotation indicator lamp 6 to be on, and at the moment, pulls the trigger 12, and the control unit 4 controls the motor 11 to rotate forward; pressing the motor state switching button 51 again, and the control unit 4 detecting that the trigger signal is a high level signal again, that is, determining that the motor state switching button 51 is pressed, controlling the reverse rotation indicator light 7 to be on, pulling the trigger 12, and controlling the motor 11 to rotate reversely by the control unit 4; the motor state switching button 51 is pressed again, the control unit 4 detects that the trigger signal is a high level signal again, that is, the motor state switching button 51 is judged to be pressed again, the self-locking indicator lamp 8 is controlled to be on, the control unit 4 controls the motor to be self-locked, and at the moment, the motor 11 cannot rotate. When the motor state switching button 51 is pressed again, the control unit 4 controls the forward rotation to circulate. Of course, the state sequence of the motor 11 can be changed by a plurality of modes, such as forward rotation, self-locking, and then reverse rotation, or forward rotation, self-locking, and then forward rotation.
Certainly, the state control of the motor may be in other manners, the control unit 4 stores a preset time value, when the motor state switching button 51 is pressed, the control unit 4 detects that the trigger signal is a high level signal, and the control unit 4 controls the motor to rotate forward and controls the forward rotation indicator lamp 6 to be turned on; then, the motor state switching button 51 is pressed, the control unit 4 detects that the trigger signal is a high-level signal, the control unit 4 controls the motor to rotate reversely, and controls the reverse indicator light 7 to be on; the motor state switching button 5 is pressed for a long time, the control unit 4 detects that the trigger signal is a high level signal and the time exceeds a preset time value, the preset time value is 2 seconds in the embodiment, the control unit 4 controls the motor to be self-locked, and the self-locking indicator light 8 is controlled to be on.
As shown in fig. 4, in order to implement the second embodiment of the present invention, the mode switching circuit 5 includes a switch 52 corresponding to the motor state switching button 51, one end of the switch 52 is grounded through a resistor, and the other end is connected to a pull-up power source and connected to the control unit 4. When the motor state switching button 51 is pressed, the switch 52 is closed, the control unit 4 detects that a trigger signal is a low level signal, the forward rotation indicator lamp 6 is controlled to be on, at the moment, the trigger 12 is pulled, and the control unit 4 controls the motor 11 to rotate forward; pressing the motor state switching button 51 again, and detecting that the trigger signal is a low level signal again by the control unit 4, that is, judging that the motor state switching button 51 is pressed, controlling the reverse rotation indicator light 7 to be on, pulling the trigger 12, and controlling the motor 11 to rotate reversely by the control unit 4; the motor state switching button 51 is pressed again, the control unit 4 detects that the trigger signal is a low level signal again, that is, the motor state switching button 51 is judged to be pressed again, the self-locking indicator lamp 8 is controlled to be on, the control unit 4 controls the motor to be self-locked, and at this time, the motor 11 cannot rotate. When the motor state switching button 5 is pressed again, the control unit 4 controls the forward rotation to circulate. Of course, the state sequence of the motor 11 can be changed by a plurality of modes, such as forward rotation, self-locking, and then reverse rotation, or forward rotation, self-locking, and then forward rotation.
Certainly, the state control of the motor may be in other manners, the control unit 4 stores a preset time value, when the motor state switching button 51 is pressed, the control unit 4 detects that the trigger signal is a low level signal, and the control unit 4 controls the motor to rotate forward and controls the forward rotation indicator lamp 6 to be turned on; then, the motor state switching button 51 is pressed, the control unit 4 detects that the trigger signal is a low level signal, the control unit 4 controls the motor to rotate reversely, and controls the reverse indicator light 7 to be on; the motor state switching button 5 is pressed for a long time, the control unit 4 detects that the trigger signal is a low level signal and the time exceeds a preset time value, the preset time value is 2 seconds in the embodiment, the control unit 4 controls the motor to be self-locked, and the self-locking indicator light 8 is controlled to be on.
The utility model discloses electric tool is equipped with motor state switching button 51 and shows the pilot lamp of motor state, and the control unit 4 is connected with mode switching circuit 5, motor state switching button 51 is operated, and mode switching circuit 5 switches on and sends the trigger signal to the control unit 4, and the control unit 4 receives trigger signal, and control motor 11 switches between corotation, reversal and auto-lock state, and controls the pilot lamp and correspond to light the present state of display motor. The electronic switch is adopted to realize the switching of the motor state and realize the corresponding indication, and the tool has long service life.
The present invention is not limited to the above-described embodiments. It will be readily appreciated by those skilled in the art that many other alternatives to the power tool may be made without departing from the spirit and scope of the invention. The protection scope of the present invention is subject to the content of the claims.
Claims (10)
1. A power tool, comprising: the motor state switching device comprises a shell, a motor contained in the shell and a control unit connected with the motor and controlling the motor to operate, wherein a motor state switching button for switching the operation state of the motor and a plurality of display state indicating lamps for displaying the operation state of the motor are arranged on the shell, and the indicating lamps are connected to the control unit and controlled to be turned on and off by the control unit; the method is characterized in that: the control unit is connected with a mode switching circuit, the motor state switching button is operated, the mode switching circuit is conducted and outputs a trigger signal to the control unit, the control unit receives the trigger signal to control the motor to switch between three states of forward rotation, reverse rotation and self-locking, and the indicator light is correspondingly conducted to correspondingly display the current state of the motor.
2. The power tool of claim 1, wherein: the shell is provided with a plurality of display windows which are arranged in parallel and respectively contain the indicating lamps, the indicating lamps comprise three independent indicating lamps, namely a forward rotation indicating lamp for displaying in a forward rotation state, a reverse rotation indicating lamp for displaying in a reverse rotation state and a self-locking indicating lamp for displaying in a motor self-locking state, the indicating lamps are light emitting diodes, the positive pole of each indicating lamp is connected with a pull-up power supply, the negative pole of each indicating lamp is connected with the control unit, and the indicating lamps are turned on when receiving low-level signals sent by the control unit.
3. The power tool of claim 2, wherein: the mode switching circuit comprises a switch corresponding to the motor state switching button, one end of the switch is connected to a pull-up power supply, the other end of the switch is grounded through a resistor and is connected to the control unit, the motor state switching button is operated, and the control unit receives a high-level signal.
4. The power tool of claim 3, wherein: the switch is a key switch, the key switch is pressed, the control unit detects the high level signal, the control unit controls the motor to be switched from the current state to another state, and controls the indicator lamp corresponding to the current state to be turned off and the indicator lamp corresponding to the other state to be turned on.
5. The power tool of claim 4, wherein: the control unit is stored with a preset time value, detects the high level signal, and controls the motor to be switched into a self-locking state and controls the self-locking indicator lamp to be on when the duration time of the high level signal exceeds the preset time value.
6. The power tool of claim 2, wherein: the mode switching circuit comprises a switch corresponding to the motor state switching button, one end of the switch is grounded through a resistor, the other end of the switch is connected with an upper pull power supply and connected to the control unit, the motor state switching button is operated, and the control unit receives a low level signal.
7. The power tool of claim 6, wherein: the motor state switching button is a key switch, the control unit detects the low level signal when the key switch is pressed, the control unit controls the motor to be switched from the current state to the other state, and controls the indicator lamp corresponding to the current state to be turned off and the indicator lamp corresponding to the other state to be turned on.
8. The power tool of claim 7, wherein: the control unit is stored with a preset time value, detects the low level signal, and controls the motor to be switched into a self-locking state and controls the self-locking indicator lamp to be on when the duration of the low level signal exceeds the preset time value.
9. The power tool of claim 1, wherein: the motor is connected with the control unit through a driving module, and the control unit controls the driving module to drive the motor according to the state of the motor state switching button.
10. The power tool of claim 1, wherein: the trigger is installed to the shell, the control unit storage has the duty cycle that trigger pulling amount corresponds, the control unit is according to the duty cycle control the rotational speed of motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023059694.6U CN214818318U (en) | 2020-12-17 | 2020-12-17 | Electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023059694.6U CN214818318U (en) | 2020-12-17 | 2020-12-17 | Electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214818318U true CN214818318U (en) | 2021-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023059694.6U Active CN214818318U (en) | 2020-12-17 | 2020-12-17 | Electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214818318U (en) |
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2020
- 2020-12-17 CN CN202023059694.6U patent/CN214818318U/en active Active
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