CN201217193Y - Numerical display type power supply for electric screwdriver - Google Patents
Numerical display type power supply for electric screwdriver Download PDFInfo
- Publication number
- CN201217193Y CN201217193Y CNU200820093838XU CN200820093838U CN201217193Y CN 201217193 Y CN201217193 Y CN 201217193Y CN U200820093838X U CNU200820093838X U CN U200820093838XU CN 200820093838 U CN200820093838 U CN 200820093838U CN 201217193 Y CN201217193 Y CN 201217193Y
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- screw driver
- electric screw
- power supply
- unit
- control circuit
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Abstract
The utility model discloses a power supply device for a digital display electric screw driver, which includes a stabilized voltage supply or a switch supply which is output by a transformer; the stabilized voltage supply or the switch supply is output to the electric screw driver through a control circuit; and the power supply device also includes a setting unit which is used for inputting control signals to control the electric screw driver rotational speed, a converting control unit which is used for inputting the control signals into the control circuit and for converting analog signals that reflect the feedback rotational speed of the electric screw driver to digital signals, and a display unit which is used for displaying the current rotational speed of the electric screw driver according to the digital signals. The utility model can display the current real rotational speed of the electric screw driver through a digital digitron or an LCD, set the rotational speed of the power supply device through the setting unit, and control the rotational speed of the power supply device through the control circuit; and the operation is simple with high reliability.
Description
[technical field]
The utility model relates to the electric screw driver power supply, relates in particular to a kind of digital display type electric screw driver supply unit.
[background technology]
At present, the electric screw driver power supply is divided into two kinds by the way of output: a kind of is a group or two groups of output voltages fixing, and a shift switch is arranged on the machine shell panel, represents top grade and low-grade respectively, and output voltage is non-adjustable; What another kind was exported is linear adjustable, and output voltage can be regulated the height of output voltage by the potentiometer on the panel.Use different rotating speeds to turn round the effect difference of screw, the time of finishing the work is also different.
But above-mentioned two kinds of electric screw driver power supplys can not show the current rotating speed of electric screw driver, are used for what being imagined the electric screw driver rotating speed the chances are with the personal experience, perhaps use special apparatus measures to regulate the rotating speed of electric screw driver as required.The rotating speed of imagining electric screw driver only according to the personal experience is very unreliable, and the rotating speed that uses special apparatus measures to regulate electric screw driver then operates very loaded down with trivial details, and causes rotating speed to change also being difficult to find if run into electric screw driver because of carelessness.
[summary of the invention]
The purpose of this utility model provides a kind of digital display type electric screw driver supply unit, can show the true rotating speed that electric screw driver is current, can also set the rotating speed of electric screw driver, and is simple to operate and reliability is high.
For achieving the above object, the utility model proposes following technical scheme:
A kind of digital display type electric screw driver supply unit comprises that described voltage-stabilized power supply or Switching Power Supply output to electric screw driver by control circuit, also comprise by the voltage-stabilized power supply or the Switching Power Supply of transformer output:
The unit is set, is used to import the control signal of control electric screw driver rotating speed;
TCU transfer control unit is used for described control signal is imported described control circuit; The analog signal conversion that also is used for described electric screw driver feedback rotating speed is a data signal;
Display unit is used for showing according to described data signal the rotating speed of current electric screw driver.
Wherein, the described unit that is provided with is a variable resistance.
Wherein, the described unit that is provided with is a multiturn potentiometer.
Wherein, the described unit that is provided with is a key switch.
Wherein, described converting unit is a digital control circuit.
Wherein, described display unit is a charactron.
Wherein, described converting unit is a single-chip microcomputer.
Wherein, described display unit is a LCD.
As can be seen from the above technical solutions, the utility model can show the true rotating speed that electric screw driver is current by charactron or LCD, can also set the rotating speed of electric screw driver by the unit is set, by the rotating speed of control circuit control electric screw driver, simple to operate and reliability is high.
[description of drawings]
Fig. 1 is the structured flowchart of the utility model embodiment one;
Fig. 2 is the structured flowchart of the utility model embodiment two.
[specific embodiment]
Below in conjunction with specific embodiment the technical solution of the utility model is described in detail.
The basic ideas of technical solutions of the utility model are, on the basis of original electric screw driver power supply, add the liquid crystal display circuit of digital circuit or single-chip microcomputer combination, are used to show the rotating speed of electric screw driver; Also add multiturn potentiometer or button, be used to import the control signal of setting the electric screw driver rotating speed.
At first introduce present electric screw driver power supply, it generally comprises voltage-stabilized power supply or Switching Power Supply, output control circuit and feedback circuit.Voltage-stabilized power supply or Switching Power Supply link to each other with output control circuit, are used for converting alternating current to direct current, and this alternating current is generally the 220V/50Hz alternating current.Output control circuit links to each other with feedback circuit, is used for the electric current electricity of described voltage-stabilized power supply or Switching Power Supply conversion is adjusted and exported.Feedback circuit links to each other with Switching Power Supply, is used for the output of described output control circuit is fed back to voltage-stabilized power supply or Switching Power Supply.
Its course of work and principle are: at first, is the direct current that circuit conversion becomes design with the 220V/50Hz alternating current by one, export by output control circuit then, the moving screwdriver of power supply uses, feedback unit is given Switching Power Supply with the changing value negative-feedback of output, to reach the purpose of burning voltage.
The utility model provides a kind of digital display type electric screw driver supply unit, comprise original electric screw driver power-supply system: by voltage-stabilized power supply or the Switching Power Supply and the control circuit of transformer output, described voltage-stabilized power supply or Switching Power Supply output to electric screw driver by control circuit, and the utility model also comprises unit, TCU transfer control unit and display unit are set.
The unit is set, is used to import the control signal of control electric screw driver rotating speed.The user can be provided with the rotating speed of electric screw driver as required.In the utility model, can be by changing the resistance size of variohm, and then the mode that changes voltage comes input control signal, variable resistance generally can adopt multiturn potentiometer and key switch to realize.Certainly, the mode of input control signal can also have alternate manner, realizes such as the mode that adopts photoelectricity.
TCU transfer control unit is used for described control signal is imported described control circuit; The analog signal conversion that also is used for described electric screw driver feedback rotating speed is a data signal.TCU transfer control unit has two effects, and the one, the analog signal conversion of feeding back the electric screw driver rotating speed is become data signal, show the rotating speed of electric screw driver by charactron or LCD; Another effect is that the control signal that will the unit setting be set is input to control circuit, regulates the rotating speed of electric screw driver by control circuit.In specific embodiment, TCU transfer control unit generally can adopt digital control circuit or single-chip microcomputer to realize.
Display unit is used for showing according to described data signal the rotating speed of current electric screw driver.Display unit generally can adopt charactron or LCD, shows the rotating speed of electric screw driver.When regulating the rotating speed of electric screw driver.The all right electric screw driver rotating speed of display setting synchronously.
Embodiment one:
As shown in Figure 1, the digital display type electric screw driver supply unit of present embodiment comprises by voltage-stabilized power supply or the Switching Power Supply and the control circuit of transformer output, also comprises digital control circuit, charactron and multiturn potentiometer.Wherein, digital control circuit links to each other with voltage-stabilized power supply or Switching Power Supply/control circuit, charactron and multiturn potentiometer respectively, and charactron links to each other with digital control circuit, and multiturn potentiometer links to each other with control circuit by digital control circuit.
Voltage-stabilized power supply or Switching Power Supply output to electric screw driver through control circuit, electric screw driver starts the back signal feedback of rotating is arrived control circuit, electric screw driver also is transferred to digital control circuit with described signal, through after mould/number conversion, demonstrate the true rotating speed of electric screw driver by charactron.In the present embodiment, multiturn potentiometer is used to import setting signal to control circuit, makes electric screw driver according to the rotating speed operation of setting, and the sum of errors of setting value and actual speed is smaller or equal to 1.3%,
Embodiment two:
As shown in Figure 2, the digital display type electric screw driver supply unit of present embodiment comprises by voltage-stabilized power supply or the Switching Power Supply and the control circuit of transformer output, also comprises single-chip microcomputer, LCD and key switch.Wherein, single-chip microcomputer links to each other with voltage-stabilized power supply or Switching Power Supply/control circuit, LCD and key switch respectively, LCD links to each other with single-chip microcomputer, key switch links to each other with control circuit by single-chip microcomputer, in the present embodiment, the assembly that LCD and key switch can be used as single-chip microcomputer is integrated in single-chip microcomputer.
Voltage-stabilized power supply or Switching Power Supply output to electric screw driver through control circuit, and to control circuit, electric screw driver also is transferred to single-chip microcomputer with described signal, and the true rotating speed of electric screw driver is shown by liquid crystal the signal feedback of rotating in electric screw driver startup back.In the present embodiment, need how many rotating speeds by key switch input setting value, preserved setting signal and setting signal is input to control circuit by single-chip microcomputer, make electric screw driver according to the rotating speed operation of setting, the sum of errors of setting value and actual speed is smaller or equal to 1.3%.
The utility model can show the true rotating speed that electric screw driver is current by charactron or LCD, can also set the rotating speed of electric screw driver by the unit is set, rotating speed by control circuit control electric screw driver, simple to operate and reliability is high, the user can make things convenient for and be provided with relievedly the true rotating speed of electric screw driver, finishes the work with reliable, the most best speed scheme.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (8)
1, a kind of digital display type electric screw driver supply unit comprises that described voltage-stabilized power supply or Switching Power Supply output to electric screw driver by control circuit, it is characterized in that, also comprise by the voltage-stabilized power supply or the Switching Power Supply of transformer output:
The unit is set, is used to import the control signal of control electric screw driver rotating speed;
TCU transfer control unit is used for described control signal is imported described control circuit; The analog signal conversion that also is used for described electric screw driver feedback rotating speed is a data signal;
Display unit is used for showing according to described data signal the rotating speed of current electric screw driver.
2, digital display type electric screw driver supply unit according to claim 1 is characterized in that, the described unit that is provided with is a variable resistance.
3, digital display type electric screw driver supply unit according to claim 2 is characterized in that, the described unit that is provided with is a multiturn potentiometer.
4, digital display type electric screw driver supply unit according to claim 2 is characterized in that, the described unit that is provided with is a key switch.
5, according to each described digital display type electric screw driver supply unit in the claim 1～4, it is characterized in that described converting unit is a digital control circuit.
6, digital display type electric screw driver supply unit according to claim 5 is characterized in that described display unit is a charactron.
7, according to each described digital display type electric screw driver supply unit in the claim 1～4, it is characterized in that described converting unit is a single-chip microcomputer.
8, digital display type electric screw driver supply unit according to claim 7 is characterized in that described display unit is a LCD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820093838XU CN201217193Y (en) | 2008-04-30 | 2008-04-30 | Numerical display type power supply for electric screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820093838XU CN201217193Y (en) | 2008-04-30 | 2008-04-30 | Numerical display type power supply for electric screwdriver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201217193Y true CN201217193Y (en) | 2009-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820093838XU Expired - Fee Related CN201217193Y (en) | 2008-04-30 | 2008-04-30 | Numerical display type power supply for electric screwdriver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201217193Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103121201A (en) * | 2013-03-19 | 2013-05-29 | 欧朗科技（苏州）有限公司 | Stored program control electric screw driver |
| CN111479655A (en) * | 2017-12-18 | 2020-07-31 | 日东工器株式会社 | Tool, control circuit of tool, and control method |
-
2008
- 2008-04-30 CN CNU200820093838XU patent/CN201217193Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103121201A (en) * | 2013-03-19 | 2013-05-29 | 欧朗科技（苏州）有限公司 | Stored program control electric screw driver |
| CN111479655A (en) * | 2017-12-18 | 2020-07-31 | 日东工器株式会社 | Tool, control circuit of tool, and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen Jizhirong Technology Co., Ltd. Assignor: Shen Jianfeng Contract record no.: 2010440020152 Denomination of utility model: Numerical display type power supply for electric screwdriver Granted publication date: 20090408 License type: Exclusive License Record date: 20100902 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090408 Termination date: 20160430 |