CN203217288U - Speed-control switch for electric tool - Google Patents
Speed-control switch for electric tool Download PDFInfo
- Publication number
- CN203217288U CN203217288U CN 201320159620 CN201320159620U CN203217288U CN 203217288 U CN203217288 U CN 203217288U CN 201320159620 CN201320159620 CN 201320159620 CN 201320159620 U CN201320159620 U CN 201320159620U CN 203217288 U CN203217288 U CN 203217288U
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- CN
- China
- Prior art keywords
- control module
- electronic control
- switch
- lithium ion
- ion battery
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- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a speed-control switch for an electric tool. The speed-control switch with a time delay function comprises an electronic control module. An output end of the electronic control module is connected with an LED 1. On and off of the LED 1 is controlled by the electronic control module. A cathode of the LED 1 is connected with an anode of a voltage stabilizing diode ZD1. A cathode of the voltage stabilizing diode ZD1 is connected with one end of a switch S1. The other end of the switch S1 is connected with a B- electrode of a lithium ion battery pack through a connector. The end, connected with the connector, of the switch S1 is connected with an S electrode of a MOSFET (metal-oxide-semiconductor field effect transistor) tube T1, a G electrode and a D electrode of the MOSFET tube T1 are both connected with the electronic control module. By the voltage stabilizing diode ZD1, one-way electric conduction is achieved. In addition, the speed-control switch has the time delay function.
Description
Technical field
The utility model relates to a kind of electric tool speed-regulating switch.
Background technology
Though the lithium electricity electric tool switch on the market is to use Single-chip Controlling now.But its function is perfect not enough.Do not consider the various environment when terminal client uses.In darker environment, must press trigger just can provide illumination.Take and set about with the hands to get construction material.
The circuit control principle of most electric tool speed-regulating switch as shown in Figure 1 on investigation market, lithium electricity electric tool switch has electronic control module, the output terminal of electronic control module is connected to by electronic control module and controls bright dark LED 1, one end of switch switch S 1 is connected with electronic control module, the other end of switch switch S 1 is connected with the lithium ion battery bag B+ utmost point by connector, and the B-utmost point of lithium ion battery bag is connected with electronic control module.The negative electrode of LED 1 also is connected with the S utmost point of MOSFET pipe T2, and the G utmost point of MOSFET pipe T2 is connected with electronic control module, and the D utmost point of MOSFET pipe T2 is connected with the negative pole of motor, and the positive pole of motor is connected with electronic control module.
Press switch switch S 1 conducting behind the trigger of switch switch S 1, after whether NTC line detection lithium ion battery bag temperature and CODE line detection lithium ion battery bag mate, electronic control module is opened LED 1 and is begun illumination, and electronic control module provides control signal driven MOS FET pipe T2 and drives revolution.Motor stops operating immediately after unclamping the trigger of switch switch S 1, and LED 1 extinguishes at once.
When the lithium electricity electric tool switch of this form used, the trigger that hand must be pushed down switch switch S 1 just can have illumination, takies a hand in the bad environment of light like this, will be very difficult when you remove chest.
The utility model content
Technical problem to be solved in the utility model is: a kind of electric tool speed-regulating switch is provided, and performance is more stable, also can have the time-delay illumination functions in addition.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of electric tool speed-regulating switch, comprise electronic control module, voltage stabilizing diode ZD, switch and lithium ion battery bag, the output terminal of electronic control module is connected to by electronic control module and controls bright dark light emitting diode, the negative pole of light emitting diode links to each other with the anode of voltage stabilizing diode, the negative electrode of voltage stabilizing diode links to each other with an end of switch, the other end of switch is connected with the B-utmost point of lithium ion battery bag by connector, and the B+ utmost point of lithium ion battery bag is connected with electronic control module by connector.
The end that described switch is connected with connector is connected with the S utmost point of a MOSFET pipe, and the G utmost point of a MOSFET pipe extremely all is connected with electronic control module with the D of MOSFET pipe.
Be connected with the NTC line for detection of lithium ion battery bag temperature on the described electronic control module, the NTC line other end is connected with the lithium ion battery bag by connector; Also be connected with the CODE line that whether mates for detection of the lithium ion battery bag on the electronic control module, the CODE line other end is connected with the lithium ion battery bag by connector.
Described electric tool speed-regulating switch also comprises the 2nd MOSFET pipe, the negative electrode of voltage stabilizing diode extremely links to each other with the S of the 2nd MOSFET pipe, the G utmost point of the 2nd MOSFET pipe is connected with electronic control module, links to each other by motor between the D utmost point of described the 2nd MOSFET pipe and the electronic control module.
Described switch conduction and electronic control module detect after the lithium ion battery bag to be measured, and the electronic control module output signal makes the conducting of MOSFET pipe; Switch disconnects the back electronic control module and picks up counting the t time, and the t time disconnects MOSFET pipe to back electronic control module output signal.
The described t time is set to 20 seconds.
Described lithium ion battery bag is 10.8V lithium ion battery bag, and described voltage stabilizing diode is the 5V voltage stabilizing diode, and described MOSFET pipe model adopts 2N7002, and described the 2nd MOSFET pipe model adopts IR3813.
The beneficial effects of the utility model are.The trigger that the utility model only need compress switch triggers and once just can obtain automatic time delay illumination in 20 seconds, can decontrol both hands and reach material.The utility model adopts voltage stabilizing diode, realize unilateal conduction, voltage stabilizing diode not only detects switch closure, can also be when revolution big electric current can not flow through electronic control module and burn out MOSFET pipe, the 5V voltage stabilizing diode has guaranteed that the 2nd MOSFET pipe can not occur surpassing-negative voltage of 5V1 and the 2nd MOSFET that breaks pipe in addition.
Description of drawings
Fig. 1 is the circuit control principle figure of electric tool speed-regulating switch in the prior art;
Fig. 2 is the circuit control principle figure of electric tool speed-regulating switch among the embodiment one of the present utility model.
Among the figure: 1, electronic control module, 2, the lithium ion battery bag, 4, connector, 5, the NTC line, 6, the CODE line, 9, motor.
Embodiment
Below in conjunction with accompanying drawing, describe specific embodiments of the present utility model in detail.
Embodiment one: as shown in Figure 2, a kind of electric tool speed-regulating switch has electronic control module 1, voltage stabilizing diode ZD1, switch switch S 1 and lithium ion battery bag 2.The output terminal of electronic control module 1 is connected to by the bright dark LED 1 of electronic control module 1 control, the negative pole of LED 1 connects the anode of voltage stabilizing diode ZD1, the negative electrode of voltage stabilizing diode ZD1 is connected with an end of switch switch S 1, the other end of switch switch S 1 is connected with the B-utmost point of lithium ion battery bag 2 by connector 4, and the B+ utmost point of lithium ion battery bag 2 is connected with electronic control module 1 by connector 4.
The end that switch switch S 1 is connected with connector 4 is connected with the S utmost point of MOSFET pipe T1, and the G utmost point of MOSFET pipe T1 extremely all is connected with electronic control module 1 with the D of MOSFET pipe T1.
NTC line 5 one ends for detection of lithium ion battery bag 2 temperature are connected with electronic control module 1, and NTC line 5 other ends are connected with lithium ion battery bag 2 by connector 4; CODE line 6 one ends that whether mate for detection of lithium ion battery bag 2 are connected with electronic control module 1, and CODE line 6 other ends are connected with lithium ion battery bag 2 by connector 4.
The negative electrode of voltage stabilizing diode ZD1 also is connected with the S utmost point of the 2nd MOSFET pipe T2, and the G utmost point of the 2nd MOSFET pipe T2 is connected with electronic control module 1, and the D utmost point of the 2nd MOSFET pipe T2 is connected with the negative pole of motor 9, and the positive pole of motor 9 is connected with electronic control module 1.
Lithium ion battery bag 2 is 10.8V lithium ion battery bag, and voltage stabilizing diode ZD1 is the 5V voltage stabilizing diode, and MOSFET pipe T1 model adopts 2N7002, and the 2nd MOSFET pipe T2 model adopts IR3813.
1 conducting of switch switch S and electronic control module 1 detect after the lithium ion battery bag 2 to be measured, and the high signal of electronic control module 1 output makes MOSFET pipe T1 conducting; Switch switch S 1 disconnects back electronic control module 1 and picks up counting the t time, and the t time disconnects MOSFET pipe T1 to back electronic control module 1 output low signal.The t time is set to 20 seconds.
Principle of work of the present utility model is: when connecting lithium ion battery bag 2, the trigger of pressing switch switch S 1 makes 1 conducting of switch switch S, and electronic control module 1 is switched to the B-utmost point of lithium ion battery bag 2 by voltage stabilizing diode ZD1.After whether electronic control module 1 mated by CODE line 6 detection lithium ion battery bags 2 by NTC line 5 detection lithium ion battery bag 2 temperature and electronic control module 1, electronic control module 1 output signal made MOSFET pipe T1 conducting; It is shinny that the one MOSFET pipe T1 conducting works on LED 1.The trigger that unclamps switch switch S 1 blocks switch switch S 1, switch switch S 1 disconnects back electronic control module 1 and picks up counting the t time as 20 seconds, make a MOSFET manage T1 to back electronic control module 1 output signal in 20 seconds and disconnect LED 1 deepening lighting-off.Repeat to wait for next time and trigger the trigger of switch switch S 1.
The utility model only need be pressed the trigger of switch switch S 1 to trigger and once just can be obtained automatic time delay illumination in 20 seconds, can decontrol both hands and reach material.
The utility model adopts voltage stabilizing diode ZD1, realize unilateal conduction, voltage stabilizing diode ZD1 not only detects switch switch S 1 closure, can also make big electric current can not flow through electronic control module 1 when motor 9 rotates and burn out MOSFET pipe T1,5V voltage stabilizing diode ZD1 have guaranteed that the 2nd MOSFET pipe T2 can not occur surpassing-negative voltage of 5V and the 2nd MOSFET that breaks pipe T2 in addition.
Claims (7)
1. electric tool speed-regulating switch, it is characterized in that: comprise electronic control module, voltage stabilizing diode ZD, switch and lithium ion battery bag, the output terminal of electronic control module is connected to by electronic control module and controls bright dark light emitting diode, the negative pole of light emitting diode links to each other with the anode of voltage stabilizing diode, the negative electrode of voltage stabilizing diode links to each other with an end of switch, the other end of switch is connected with the B-utmost point of lithium ion battery bag by connector, and the B+ utmost point of lithium ion battery bag is connected with electronic control module by connector.
2. electric tool speed-regulating switch according to claim 1, it is characterized in that: the end that described switch is connected with connector is connected with the S utmost point of a MOSFET pipe, and the G utmost point of a MOSFET pipe extremely all is connected with electronic control module with the D of MOSFET pipe.
3. electric tool speed-regulating switch according to claim 1 and 2, it is characterized in that: be connected with the NTC line for detection of lithium ion battery bag temperature on the described electronic control module, the NTC line other end is connected with the lithium ion battery bag by connector; Also be connected with the CODE line that whether mates for detection of the lithium ion battery bag on the electronic control module, the CODE line other end is connected with the lithium ion battery bag by connector.
4. electric tool speed-regulating switch according to claim 1, it is characterized in that: described electric tool speed-regulating switch also comprises the 2nd MOSFET pipe, the negative electrode of voltage stabilizing diode extremely links to each other with the S of the 2nd MOSFET pipe, the G utmost point of the 2nd MOSFET pipe is connected with electronic control module, links to each other by motor between the D utmost point of described the 2nd MOSFET pipe and the electronic control module.
5. electric tool speed-regulating switch according to claim 2 is characterized in that: described switch conduction and electronic control module detect after the lithium ion battery bag to be measured, and the electronic control module output signal makes the conducting of MOSFET pipe; Switch disconnects the back electronic control module and picks up counting the t time, and the t time disconnects MOSFET pipe to back electronic control module output signal.
6. electric tool speed-regulating switch according to claim 5, it is characterized in that: the described t time is set to 20 seconds.
7. electric tool speed-regulating switch according to claim 1, it is characterized in that: described lithium ion battery bag is 10.8V lithium ion battery bag, described voltage stabilizing diode is the 5V voltage stabilizing diode, described MOSFET pipe model adopts 2N7002, and described the 2nd MOSFET pipe model adopts IR3813.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320159620 CN203217288U (en) | 2013-04-02 | 2013-04-02 | Speed-control switch for electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320159620 CN203217288U (en) | 2013-04-02 | 2013-04-02 | Speed-control switch for electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203217288U true CN203217288U (en) | 2013-09-25 |
Family
ID=49206810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320159620 Expired - Lifetime CN203217288U (en) | 2013-04-02 | 2013-04-02 | Speed-control switch for electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203217288U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103246215A (en) * | 2013-04-02 | 2013-08-14 | 张家港华捷电子有限公司 | Speed-adjusting switch of electric tool |
-
2013
- 2013-04-02 CN CN 201320159620 patent/CN203217288U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103246215A (en) * | 2013-04-02 | 2013-08-14 | 张家港华捷电子有限公司 | Speed-adjusting switch of electric tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130925 |
|
| CX01 | Expiry of patent term |