CN204156774U - A kind of electric tool - Google Patents
A kind of electric tool Download PDFInfo
- Publication number
- CN204156774U CN204156774U CN201420664825.9U CN201420664825U CN204156774U CN 204156774 U CN204156774 U CN 204156774U CN 201420664825 U CN201420664825 U CN 201420664825U CN 204156774 U CN204156774 U CN 204156774U
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- electric power
- electric tool
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Abstract
The utility model discloses a kind of electric tool, it is characterized in that: this electric tool comprises: Manual control structure, this Manual control structure comprises the trigger portion of the movement by user exerts pressure and the magnet assembly with this trigger portion interlock; Magnetic control assembly, changes of magnetic field when this magnetic control assembly moves according to this magnet assembly and export the output control signal of the proportional variation with changes of magnetic field; Electric power modulation circuit, this electric power modulation circuit obtains input electric power and modulation becomes drive electric power and drive electro-motor to operate, and the driving electric power size of this electric power modulation circuit institute modulation is the numerical values recited being controlled by this output control signal.Make the variation of the variation of magnetic force and this output control signal be continuous, controllable, but not only have the change of ON/OFF or two section, three sections.User changes the strength putting on this trigger portion can control exerting oneself of this electro-motor, and to provide trickleer rotating speed, torsion change controls.
Description
Technical field
The utility model relates to a kind of electric tool, refers to that one utilizes magnet assembly to coordinate control circuit to reach thin microcontrolled electric tool with magnetic control assembly especially.
Background technology
Small-sized electric tool is because volume is little, price is lower, and electric tool can connect different application tools and form multiple change kenel, as multiple kenels such as abrasive machine, drilling machine, electric wrench, operating personnel can be assisted to perform some working procedure fast and very popular.And the power resources of electric tool are electric power, and utilize electric power motor and provide power to drive application tool to rotate.
The switching device of existing electric tool, comprises trigger button, is fixed on conducting strip on this trigger button and control circuit.Wherein this conducting strip is bent with three power connecting sheets extended towards this trigger button moving direction, the second power connecting sheet and the 3rd power connecting sheets, and this control circuit is provided with the and connects sheet, second and connect sheet and the 3rd and connect sheet.This power connecting sheet, the second power connecting sheet connect sheet, second with this and connect the corresponding switch forming control electronic loop of sheet.This power connecting sheet, the second power connecting sheet and the 3rd power connecting sheet connect sheet, second with this and connect sheet and the 3rd and connect the corresponding second switch forming the electric loop of control second of sheet.The running of the electronic load of this electric tool and the motor of this electric tool is controlled respectively by the running of this switch and second switch.
The cocking mechanism controlling this electric tool is that conductive site by determining this conducting strip and connecting sheet is to control the running of this electric tool.This trigger and construction of switch adopt the structure of contact, though the structure of the existing Discrete control of this trigger and switch, but the construction of switch of Discrete control is more complicated, and will reach also meticulous multistage control effects, will make construction of switch be also that complexity, cost are also high.Moreover, although Discrete control can reach change power output or function according to press pressure, what but this spanner can control only have default two, three kind of rotating speed, there is the drop of power or speed between each section, and cannot be decided in its sole discretion power or the rotating speed of the output of this electric tool by user, therefore, general electric tool cannot be used in precision process.
Utility model content
The technical problems to be solved in the utility model is, controlling organization for existing electric tool is difficult to the technical problem providing precise hard_drawn tuhes, the controlling organization of electric tool is improved, the running exporting change making this controlling organization drive this electric tool to provide continuous, controlled.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of electric tool, it is characterized in that: this electric tool comprises: Manual control structure, this Manual control structure comprises the trigger portion of the movement by user exerts pressure and the magnet assembly with this trigger portion interlock; Magnetic control assembly, changes of magnetic field when this magnetic control assembly moves according to this magnet assembly and export the output control signal of the proportional variation with changes of magnetic field; Electric power modulation circuit, this electric power modulation circuit obtains input electric power and modulation becomes drive electric power and drive electro-motor to operate, and the driving electric power size of this electric power modulation circuit institute modulation is the numerical values recited being controlled by this output control signal.
As improvement, the trigger portion of described Manual control structure comprises the press component that bears outside press pressure and the linked component with this press component interlock.
Improve, described electric tool has shell again, and this press component is combined on this shell movably, this shell is also provided with displacement rails and moves along this displacement rails for this linked component.
Improve, have space and establish elastic parts between described linked component and this displacement rails, these elastic parts two ends are butted on this shell and this linked component respectively, with the elastic force resetted after providing linked component displacement.
Improve again, described electric power modulation circuit has the electric power converter that microprocessor, this input electric power of modulation of obtaining this output control signal transfer this driving electric power to, this microprocessor exports the electric power modulation signal with the proportional variation of this output control signal, and this electric power converter determines according to this electric power modulation signal the power exporting this driving electric power.
Improve, described electric power modulation circuit has rotating speed limiting circuit again, and this rotating speed limiting circuit output speed restriction signal gives this microprocessor to limit the maximum magnitude of this microprocessor output power modulation signal.
Improve again; described electric power modulation circuit has electric power circuit for detecting; this electric power circuit for detecting setting voltage minimum and current maxima, and in this input electric power lower than this voltage minimum or trigger this microprocessor higher than output protection signal during this current maxima and enter guard mode.
Improve again; described electric power modulation circuit is provided with detecting electric tool working temperature and the thermal-shutdown circuit of exportable overheat protector signal, and this thermal-shutdown circuit exports this overheat protector signal in the working temperature of this electric tool higher than during the temperature maximum preset.
Improve, described magnetic control assembly is hall sensing assembly, and this magnet assembly is magnet again.
Compared with prior art, owing to the utility model has the advantage of: user applies pressure to this trigger portion and drives this magnet assembly, this magnetic control assembly is made to produce output control signal according to changes of magnetic field, this output control signal changes this driving electric power size, and then adjust the running of this electro-motor, the variation of the variation of magnetic force and this output control signal is made to be continuous, controllable, but not only have ON/OFF or two section, the change of three sections, user changes the strength putting on this trigger portion can control exerting oneself of this electro-motor, to provide trickleer rotating speed, torsion change controls.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model electric tool;
Fig. 2 is the illustrative view of the utility model electric tool;
Fig. 3 is the circuit block diagram of the utility model electric tool.
Embodiment
Below in conjunction with accompanying drawing embodiment, progressive detailed description in detail is done to the utility model.
As shown in Figure 1, 2, electric tool of the present utility model comprises electro-motor 4, and this electro-motor 4 can connect the application tool (as abrasive wheel) of different kenel, and the utility model does not limit the form of this application tool and electro-motor 4.This electric tool comprises electric power modulation circuit 2, and this electric power modulation circuit 2 obtains the input electric power that power source 6 (being shown in Fig. 3) is supplied, and modulation becomes drive electric power and drive this electro-motor 4 to operate.The watt level of this driving electric power determines rotating speed and the torsion of the running of this electro-motor 4, in order to control the size of this driving electric power, this electric power modulation electric power 2 is electrically connected with magnetic control assembly 20, and this electric tool also comprises the Manual control structure 1 operated by user, this Manual control structure 1 comprises the trigger portion 11 of the movement by user exerts pressure and the magnet assembly 10 with this trigger portion 11 interlock.When user presses this trigger portion 11, this magnet assembly 10 can with the same displacement of this trigger portion 11, and the displacement of this magnet assembly 10 will produce changes of magnetic field.This magnetic control assembly 20 senses changes of magnetic field when this magnet assembly 10 moves and exports the output control signal of the proportional variation with changes of magnetic field, this output control signal is sent to this electric power modulation circuit 2, and the driving electric power size making this electric power modulation circuit 2 modulations is the numerical values recited being controlled by this output control signal.Above-mentioned magnet assembly 10 can be magnet, and magnetic control assembly 20 is hall sensing assembly.By above-mentioned technical characteristic, the movement of this Manual control structure 1 by reaching continuously, can the effect of this driving electric power of trickle adjustment, but not known electric power driven tools only has ON/OFF or two section rotating speed, this electric tool strengthens controlled performance, and same electric tool can be allowed to be useful in different work objects.Such as in meticulousr mechanism, smaller power can be exported by this trigger portion 11 of user's flicking; Otherwise in the mechanical structure in the higher force road that can bear, user can press this trigger portion 11 and improve power by larger power.
In addition, this electric tool has shell 3, and this trigger portion 11 comprises press component 111 and linked component 112, and this magnet assembly 10 can be connected on this linked component 112.This press component 111 is incorporated on this shell 3 movably, and this shell 3 is provided with supporting seat 31 and connects this press component 111, makes press component 111 have displacement stroke using this supporting seat 31 as fulcrum.This linked component 112 is butted on this press component 111 times, and this shell 3 is provided with displacement rails 32 locates this linked component 112.When this press component 111 moves, this linked component 112 is moved along this displacement rails 32 by interlock, moreover, between this linked component 112 and this displacement rails 32, there is space and establish elastic parts 5, these elastic parts 5 two ends are butted on this shell 3 and this linked component 112 respectively, with the elastic force resetted after providing linked component 112 displacement.The movement of this linked component 112 by and the magnet assembly 10 on this linked component 112 that is connected, cause the change in magnetic field.The change in this magnetic field will be sensed by this magnetic control assembly 20.
As shown in Figure 3, the signal controlling this electric power modulation circuit 2 and operate will be produced by this magnet assembly 10 and magnetic control assembly 20 after trigger portion 11 is subject to using pressing.The electric power converter 24 that this electric power modulation circuit 2 at least comprises microprocessor 21, this input electric power of modulation transfers this driving electric power to, after this magnetic control assembly 20 senses changes of magnetic field, this magnetic control assembly 20 exports the output control signal with the proportional variation of changes of magnetic field, this microprocessor 21 exports the electric power modulation signal with the proportional variation of this output control signal after obtaining this output control signal, and this electric power converter 24 determines according to this electric power modulation signal the power exporting this driving electric power.This electric power converter 24 can be made up of drive circuit 241 and group power switch 242, and this drive circuit 241 exports or multiple pulse wave controls this power switch 242 conducting or cut-off, and this input electric power modulation is formed this driving electric power.Wherein, according to the difference of this electro-motor 4 form, this driving electric power can be single-phase electric power or the electric power of three-phase.Above-mentioned drive circuit 241 and the form of power switch 242 and operation principles know as this technical field tool the knowledgeable the known technology be familiar with, be not intended to limit scope of the present utility model.This output control signal is sent in the microprocessor 21 of this electric power modulation circuit 2 by this magnetic control assembly 20, this microprocessor 21 exports the electric power modulation signal with the proportional variation of this output control signal, this electric power converter 24 is made to determine to export the power of this driving electric power according to this electric power modulation signal, therefore the variable effect changed power of this driving electric power of this output control signal.By above-mentioned technology, the physics of this magnet assembly 10 can be allowed to move change into the output control signal that magnetic control assembly 20 exports, this output control signal also advancements affect exports the driving electric power of this electro-motor 4 to.This electric power modulation circuit 2 also has rotating speed limiting circuit 22, and this rotating speed limiting circuit 22 output speed restriction signal gives this microprocessor 21 to limit the maximum magnitude of this microprocessor 21 output power modulation signal, and then limits the maximum speed of this electro-motor 4.After being limited maximum speed, the power headroom of this driving electric power can make to have the space mutually adjusted between the rotating speed of this electro-motor 4 and torsion.Therefore, setting maximum speed and after this electro-motor 4 reaches maximum speed, user presses the torsion that changes of magnetic field that trigger portion 11 produces makes this microcontroller 21 adjust this electro-motor 4 to export the most at last, and the torsion reached under same rotational speed controls.
In addition, this electric power modulation circuit 2 has electric power circuit for detecting 23, thermal-shutdown circuit 25 and motor phase checking circuit 26, and this electric power circuit for detecting 23 comprises Power Management Unit 231, overcurrent protection unit 232, under-voltage protection unit 233.This Power Management Unit 231, overcurrent protection unit 232, under-voltage protection unit 233 are all connected to this power source 6 to detect this input electric power; and this overcurrent protection unit 232, under-voltage protection unit 233 set current maxima and voltage minimum respectively; and when this input electric power is higher than this current maxima or lower than this voltage minimum, this overcurrent protection unit 232 or this under-voltage protection unit 233 output protection signal trigger this microprocessor 21 and enter guard mode.This Power Management Unit 231 is when this this input electric power of power source 6 regular supply, and acquisition substrate bias electric power supplies should microprocessor 21 and this drive circuit 241.This thermal-shutdown circuit 25 detects the working temperature of this electric tool, and when the working temperature of this electric tool is higher than the temperature maximum preset, this thermal-shutdown circuit 25 exports overheat protector signal and triggers this microprocessor 21 and enter guard mode.The phase place of this electro-motor 4 of this motor phase checking circuit 26 detecting running supplies the reference of this microcontroller 21 control.
In sum, the technical characteristic that the utility model discloses is available for users to drive this magnet assembly 10 by applying pressure to this trigger portion 11, this magnetic control assembly 20 is made to produce output control signal according to changes of magnetic field, this output control signal changes this driving electric power size, and then adjusts the running of this electro-motor 4.The advantage that above-mentioned technology reaches is the variation of magnetic force and the variation of this output control signal is continuous, controllable, but not only has the change of ON/OFF or two section, three sections.User changes the strength putting on this trigger portion 21 can control exerting oneself of this electro-motor, and to provide trickleer rotating speed, torsion change controls, and strengthens the controllability of this electric tool, same electric tool can be allowed to be useful in different work objects.
Claims (9)
1. an electric tool, is characterized in that: this electric tool comprises:
Manual control structure, this Manual control structure comprises the trigger portion of the movement by user exerts pressure and the magnet assembly with this trigger portion interlock;
Magnetic control assembly, changes of magnetic field when this magnetic control assembly moves according to this magnet assembly and export the output control signal of the proportional variation with changes of magnetic field;
Electric power modulation circuit, this electric power modulation circuit obtains input electric power and modulation becomes drive electric power and drive electro-motor to operate, and the driving electric power size of this electric power modulation circuit institute modulation is the numerical values recited being controlled by this output control signal.
2. electric tool according to claim 1, is characterized in that: the trigger portion of described Manual control structure comprises the press component that bears outside press pressure and the linked component with this press component interlock.
3. electric tool according to claim 2, is characterized in that: described electric tool has shell, and this press component is combined on this shell movably, this shell is also provided with displacement rails and moves along this displacement rails for this linked component.
4. electric tool according to claim 3, it is characterized in that: between described linked component and this displacement rails, there is space and establish elastic parts, these elastic parts two ends are butted on this shell and this linked component respectively, with the elastic force resetted after providing linked component displacement.
5. electric tool according to claim 1, it is characterized in that: described electric power modulation circuit has the electric power converter that microprocessor, this input electric power of modulation of obtaining this output control signal transfer this driving electric power to, this microprocessor exports the electric power modulation signal with the proportional variation of this output control signal, and this electric power converter determines according to this electric power modulation signal the power exporting this driving electric power.
6. electric tool according to claim 5, it is characterized in that: described electric power modulation circuit has rotating speed limiting circuit, this rotating speed limiting circuit output speed restriction signal gives this microprocessor to limit the maximum magnitude of this microprocessor output power modulation signal.
7. electric tool according to claim 5; it is characterized in that: described electric power modulation circuit has electric power circuit for detecting; this electric power circuit for detecting setting voltage minimum and current maxima, and in this input electric power lower than this voltage minimum or trigger this microprocessor higher than output protection signal during this current maxima and enter guard mode.
8. electric tool according to claim 5; it is characterized in that: described electric power modulation circuit is provided with detecting electric tool working temperature and the thermal-shutdown circuit of exportable overheat protector signal, this thermal-shutdown circuit exports this overheat protector signal in the working temperature of this electric tool higher than during the temperature maximum preset.
9. electric tool according to claim 1, is characterized in that: described magnetic control assembly is hall sensing assembly, and this magnet assembly is magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420664825.9U CN204156774U (en) | 2014-11-09 | 2014-11-09 | A kind of electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420664825.9U CN204156774U (en) | 2014-11-09 | 2014-11-09 | A kind of electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204156774U true CN204156774U (en) | 2015-02-11 |
Family
ID=52514862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420664825.9U Withdrawn - After Issue CN204156774U (en) | 2014-11-09 | 2014-11-09 | A kind of electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204156774U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110340835A (en) * | 2018-04-02 | 2019-10-18 | 明纬(广州)电子有限公司 | The operating method of spanner |
-
2014
- 2014-11-09 CN CN201420664825.9U patent/CN204156774U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110340835A (en) * | 2018-04-02 | 2019-10-18 | 明纬(广州)电子有限公司 | The operating method of spanner |
| CN110340835B (en) * | 2018-04-02 | 2024-03-15 | 明纬(广州)电子有限公司 | Operation method of wrench |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150211 Effective date of abandoning: 20150819 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |