CN207039505U - Electric device peripheral circuit and the electric tool with the electric device peripheral circuit - Google Patents
Electric device peripheral circuit and the electric tool with the electric device peripheral circuit Download PDFInfo
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- CN207039505U CN207039505U CN201720072136.2U CN201720072136U CN207039505U CN 207039505 U CN207039505 U CN 207039505U CN 201720072136 U CN201720072136 U CN 201720072136U CN 207039505 U CN207039505 U CN 207039505U
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- partial pressure
- pressure component
- binding post
- component
- peripheral circuit
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Abstract
It the utility model is related to a kind of electric device peripheral circuit and the electric tool with the electric device peripheral circuit, peripheral circuit includes switch, the first partial pressure component, the second partial pressure component and level drop-down component, the common port of first partial pressure component and the second partial pressure component is connected the same port of control chip with one end of level drop-down component, the other end of first partial pressure component connects external power source positive pole by switching, second partial pressure component other end connection earth terminal；The other end connection earth terminal of level drop-down component.The level that control chip is pulled down according to port can be realized to be detected to the type of its corresponding device.When switch is pressed, the voltage of access external power source output simultaneously exports to whether control chip, control chip can be pressed according to its port voltage identification switch after the first partial pressure component and the second partial pressure component partial pressure.Realize that type judges and switch detects by the same port of control chip, reduce circuit connection quantity, reduce production cost.
Description
Technical field
Technical field of electric control is the utility model is related to, more particularly to a kind of electric device peripheral circuit and with this
The electric tool of electric device peripheral circuit.
Background technology
Electric tool is a kind of mechanized tool, and it, as power, is driven by motor or electromagnet by transmission mechanism
The head that works carries out operation, is usually made hand-held, movable, light structure, carries easy to use.Due to can compared to hand tools
Production efficiency several times are improved to decades of times, electric tool has been widely used in national economy every field, and enters family
Use.
For the electric tool based on chip controls, its control content includes type judgement, button detection and LED (Light
Emitting Diode, light emitting diode) driving etc..Traditional electric tool control circuit is an end using control chip
Mouth is corresponding to realize a kind of function, and wiring quantity is more, and production cost is high.
Utility model content
Based on this, it is necessary in view of the above-mentioned problems, provide a kind of electric device peripheral circuit for reducing production cost and
Electric tool with the electric device peripheral circuit.
A kind of electric device peripheral circuit, including switch, the first partial pressure component, the second partial pressure component and level drop-down group
Part, one end of the first partial pressure component connect one end of the second partial pressure component, the other end of the first partial pressure component
External power source positive pole is connected by the switch, the second partial pressure component other end connects earth terminal；The first partial pressure group
The common port of part and the second partial pressure component is connected the same port of control chip, institute with one end of level drop-down component
State the other end connection earth terminal of level drop-down component.
A kind of electric tool, including above-mentioned electric device peripheral circuit.
Above-mentioned electric device peripheral circuit and the electric tool with the electric device peripheral circuit, electric device periphery electricity
The first partial pressure component on road and the common port of the second partial pressure component are connected the same of control chip with one end of level drop-down component
Port, the port level of control chip can make control chip by level drop-down component drop-down, the level drop-down component of different resistances
Port be pulled down after level it is different, the level after control chip is pulled down according to its port can be realized to its corresponding device
Type is detected.When switch is pressed, the voltage of external power source output is accessed and through the first partial pressure component and the second partial pressure
Output is to control chip after component partial pressure, and whether control chip can be pressed according to its port voltage identification switch, for use as entering
Row mode of operation identifies.Realize that type judges and switch detects by the same port of control chip, reduce circuit connection
Quantity, reduce production cost.
Brief description of the drawings
Fig. 1 is the structural representation of electric device peripheral circuit in an embodiment；
Fig. 2 is the structural representation of electric device peripheral circuit in another embodiment.
Embodiment
In one embodiment, a kind of electric device peripheral circuit, suitable for the electric tool based on chip controls.Such as figure
Shown in 1, the electric device peripheral circuit includes switch S2, the first partial pressure component 120, the second partial pressure component 130 and level drop-down
Component 140, one end of the first partial pressure component 120 connect one end of the second partial pressure component 130, the first partial pressure component 120 it is another
End is by switching S2 connection external power source positive poles, the other end of the second partial pressure component 130 connection earth terminal；First partial pressure component 120
The same port of control chip 200, electricity are connected with the common port of the second partial pressure component 130 with one end of level drop-down component 140
The other end connection earth terminal of flat drop-down component 140.
When switch S2 is not pressed, the port level of control chip 200 is pulled down by level drop-down component 140, controls core
Level after piece 200 is pulled down according to its port can be realized the type of its corresponding device is detected.Specifically, control chip
200 port is arranged to analog input, is pulled open on inside.The resistance of level drop-down component 140 in different type of machines peripheral circuit
Difference, Port detecting to voltage also have difference.The read port voltage of control chip 200 judges type, such as detects voltage
For VType Λ, then type A is identified as, it is V to detect voltageTypeB, then type B is identified as, it is V to detect voltageType C, then it is identified as
Type C ... ..., the rest may be inferred.
When switch S2 is pressed, the voltage of access external power source output is through the first partial pressure component 120 and the second partial pressure group
Whether output to control chip 200, control chip 200 can be pressed according to its port voltage identification switch S2 after the partial pressure of part 130.
Specifically, control chip 200 first can judge whether to need perform detection switching programme according to identified type, if desired, then control
The port of coremaking piece 200 is arranged to analog input, is pulled open on inside.Control chip 200 reads present port voltage identification and opened
Operation is closed, also pattern switching can be operated according to the switching manipulation recognized.For example, detect that voltage is VPress, then switch whole
Machine mode of operation, it is V to detect voltageDo not press, then complete machine mode of operation is constant.
Above-mentioned electric device peripheral circuit, the port level of control chip 200 is pulled down by level drop-down component 140, different
The level drop-down component 140 of resistance can make the port of control chip 200 be pulled down after level it is different, the basis of control chip 200
Level after its port is pulled down can be realized the type of its corresponding device is detected.When switch S2 is pressed, access is outer
The voltage of portion's power supply output simultaneously exports to control chip 200 after the first partial pressure component 120 and the partial pressure of the second partial pressure component 130,
Whether control chip 200 can be pressed according to its port voltage identification switch S2, for use as pattern-recognition is operated.Pass through control
The same port of coremaking piece 200 realizes that type judges and switch detects, and reduces circuit connection quantity, reduces and be produced into
This.
In one embodiment, as shown in Fig. 2 the first partial pressure component 120 includes first resistor R1, first resistor R1 one end
Connecting valve S2, the other end connect the second partial pressure component 130.It is appreciated that the concrete structure of the first partial pressure component 120 is not only
One, multiple series, parallel or the resistance of series-parallel connection can also be included.
Further, in one embodiment, the second partial pressure component 130 includes second resistance R3, second resistance R3 one end
Connect the first partial pressure component 120, other end connection earth terminal.It is appreciated that the concrete structure of the second partial pressure component 130 is also not only
One, multiple series, parallel or the resistance of series-parallel connection can be included.
When switch S2 is pressed, the voltage of access external power source positive pole B+ outputs is through first resistor R1 and second resistance R3 partial pressures
Export afterwards to the port of control chip 200, so that control chip 200 detects that switch S2 is pressed.First resistor R1 and second
Resistance R3 resistance is not unique, can be selected according to the actual requirements, in addition, can also be by external power source negative pole B- also with connecing
Ground terminal connects.
In one embodiment, 3rd resistor R2,3rd resistor R2 mono- are included with continued reference to Fig. 2, level drop-down component 140
End connection control chip 200, other end connection earth terminal.Specifically, first resistor R1 and second resistance R3 common port and
Three resistance R2 one end passes through the same port of interface ST connections control chip 200.3rd resistor R2 resistance is not unique,
It can select according to the actual requirements.It is appreciated that the concrete structure of level drop-down component 140 is not also unique, can include multiple
Series, parallel or the resistance of series-parallel connection.
In one embodiment, level drop-down component 140 also includes LED, and 3rd resistor R2 passes through luminous
Diode (LED) connects earth terminal, and the anode connection 3rd resistor R2 of LED.
Control chip 200 first can judge whether to need to perform driving LED programs according to identified type, if desired then by end
Mouth is arranged to delivery outlet, and according to the mode of operation being presently in, selection is lighted or extinguishes LED.
In the present embodiment, realize that type judges, switch detection and LED drive by the same port of control chip 200,
Circuit connection quantity is further reduced, reduces production cost.
In another embodiment, level drop-down component 140 also includes the 4th resistance, and 3rd resistor R2 is connected by the 4th resistance
Earth terminal is connect, the resistance of the 4th resistance is not also unique.In the present embodiment, level drop-down component 140 includes two electricity of series connection
Resistance, the port level of control chip 200 is dragged down by the resistance of two series connection.
It is appreciated that one compared with detailed embodiment, level drop-down component 140 can also include simultaneously 3rd resistor R2,
4th resistance and LED, one end connects control after 3rd resistor R2, the 4th resistance and LED are connected
Chip 200, other end connection earth terminal.
In one embodiment, electric device peripheral circuit also connects including the first binding post, the second binding post, the 3rd
Line terminals, the 4th binding post, the 5th binding post and the 6th binding post.
Switch S2 one end and external power source positive pole B+ is connected by the first binding post, the other end is connected by the second binding post
Connect the 3rd binding post；The one end of first partial pressure component 120 connects the 3rd binding post, and the other end is connected by the 4th binding post
5th binding post, the one end of the second partial pressure component 130 connect the 5th binding post, and the other end is connect by the 6th binding post
Ground terminal.
In the present embodiment, switch S2, the first partial pressure component 120 and the second partial pressure component 130 are accessed by binding post
In electric device peripheral circuit, the particular type of each binding post is not unique, can be solder terminal or clamping terminal etc., only
Electrical connection need to be met.Switch S2, the first partial pressure component 120 and the second partial pressure component 130 are accessed by each binding post, just
Changed in switch S2, the first partial pressure component 120 and the second partial pressure component 130.
In one embodiment, as shown in Fig. 2 electric device peripheral circuit also includes diode D1, the first partial pressure component
120 and second the common port of partial pressure component 130 be connected by diode D1 with control chip 200, and diode D1 negative electrode connects
Connect control chip 200.Voltage after first partial pressure component 120 and the partial pressure of the second partial pressure component 130 through diode D1 transmit to
Control chip 200, electric current backflow is prevented, improve the security and stability of electric device peripheral circuit.
In addition, electric device peripheral circuit may also include the 7th binding post and the 8th binding post, diode D1 sun
Pole connects the common port of the first partial pressure component 120 and the second partial pressure component 130, diode D1 negative electrode by the 7th binding post
Control chip 200 is connected by the 8th binding post.Diode D1 is accessed by binding post, is easy to carry out more diode D1
Change.
In one embodiment, a kind of electric tool, including above-mentioned electric device peripheral circuit.In addition, electric tool is also
May include control chip, the same port of control chip connects the common port of the first partial pressure component and the second partial pressure component, and
Level pulls down one end of component.
Above-mentioned electric tool, realize that type judges and switch detects by the same port of control chip, reduce electricity
Road wiring quantity, reduces production cost.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and its description is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that the common skill for this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of electric device peripheral circuit, it is characterised in that including switch, the first partial pressure component, the second partial pressure component and electricity
Flat drop-down component, one end of the first partial pressure component connect one end of the second partial pressure component, the first partial pressure component
The other end pass through the switch connection external power source positive pole, the second partial pressure component other end connects earth terminal；Described
The common port of one partial pressure component and the second partial pressure component is connected the same of control chip with one end of level drop-down component
Single port, the other end connection earth terminal of the level drop-down component.
2. electric device peripheral circuit according to claim 1, it is characterised in that the first partial pressure component includes first
Resistance, described first resistor one end connect the switch, and the other end connects the second partial pressure component.
3. electric device peripheral circuit according to claim 1, it is characterised in that the second partial pressure component includes second
Resistance, described second resistance one end connect the first partial pressure component, other end connection earth terminal.
4. electric device peripheral circuit according to claim 1, it is characterised in that the level drop-down component includes the 3rd
Resistance, described 3rd resistor one end connect the control chip, other end connection earth terminal.
5. electric device peripheral circuit according to claim 4, it is characterised in that the level drop-down component also includes hair
Optical diode, the 3rd resistor connect earth terminal, and the anode connection of the light emitting diode by the light emitting diode
The 3rd resistor.
6. electric device peripheral circuit according to claim 4, it is characterised in that level drop-down component also includes the
Four resistance, the 3rd resistor connect earth terminal by the 4th resistance.
7. electric device peripheral circuit according to claim 1, it is characterised in that also including the first binding post, second
Binding post, the 3rd binding post, the 4th binding post, the 5th binding post and the 6th binding post,
Described switch one end connects external power source positive pole by first binding post, and the other end passes through second terminals
Son connects the 3rd binding post；Described first partial pressure component one end connects the 3rd binding post, and the other end passes through institute
To state the 4th binding post and connect the 5th binding post, described second partial pressure component one end connects the 5th binding post,
The other end connects earth terminal by the 6th binding post.
8. electric device peripheral circuit according to claim 1, it is characterised in that also including diode, described first point
The common port of pressure component and the second partial pressure component is connected by the diode with the control chip, and the diode
Negative electrode connect the control chip.
9. electric device peripheral circuit according to claim 8, it is characterised in that also including the 7th binding post and the 8th
Binding post, the anode of the diode connect the first partial pressure component and described second point by the 7th binding post
The common port of component is pressed, the negative electrode of the diode connects the control chip by the 8th binding post.
10. a kind of electric tool, it is characterised in that including the electric device periphery electricity as described in claim 1-9 any one
Road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720072136.2U CN207039505U (en) | 2017-01-20 | 2017-01-20 | Electric device peripheral circuit and the electric tool with the electric device peripheral circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720072136.2U CN207039505U (en) | 2017-01-20 | 2017-01-20 | Electric device peripheral circuit and the electric tool with the electric device peripheral circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207039505U true CN207039505U (en) | 2018-02-23 |
Family
ID=61471881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720072136.2U Active CN207039505U (en) | 2017-01-20 | 2017-01-20 | Electric device peripheral circuit and the electric tool with the electric device peripheral circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207039505U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123095A (en) * | 2018-10-31 | 2020-05-08 | 佛山市顺德区美的电热电器制造有限公司 | Detection circuit, motor detection method, motor and household appliance |
-
2017
- 2017-01-20 CN CN201720072136.2U patent/CN207039505U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123095A (en) * | 2018-10-31 | 2020-05-08 | 佛山市顺德区美的电热电器制造有限公司 | Detection circuit, motor detection method, motor and household appliance |
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