CN2577504Y - Electronic soft-start module for electric tool - Google Patents
Electronic soft-start module for electric tool Download PDFInfo
- Publication number
- CN2577504Y CN2577504Y CN 02260617 CN02260617U CN2577504Y CN 2577504 Y CN2577504 Y CN 2577504Y CN 02260617 CN02260617 CN 02260617 CN 02260617 U CN02260617 U CN 02260617U CN 2577504 Y CN2577504 Y CN 2577504Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- bridge rectifier
- soft start
- connects
- trigger
- Prior art date
- 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 - Fee Related
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Abstract
The utility model relates to an electronic soft start module of an electric tool. The utility model is characterized in that the soft start module is composed of a time delay circuit (1), a soft start control circuit (2), a dephasing trigger circuit (3) and a heavy current switching circuit (4), wherein the time delay circuit (1) is connected with the soft start control circuit (2) connected with the dephasing trigger circuit (3), and the dephasing triggering circuit (3) is connected with the heavy current switching circuit (4) provided with outlet ends A and B. The soft start module has the advantages of small volume, few outlet terminals, low cost and high reliability.
Description
Technical field
The utility model relates to the electronics soft start module that is used for electric tool.
Background technology
Use the electric tool of mechanical switch, torsion that produces when beginning to start and vibration make operation hard, simultaneously, because of the large-current electric arc loss that switch contact produces is influenced useful life when switch activated, existing electronics soft start module has obtained good result for solving above-mentioned drawback, yet the working power of its functional circuit is provided by its inner independent power circuit so that volume is big, leading-out terminal is many, cost is high.
Summary of the invention
The purpose of this utility model is to overcome the above-mentioned deficiency of prior art and the electronics soft start that volume is little, leading-out terminal is few, cost is low module is provided.
The purpose of this utility model can reach by following technical solution: the utility model electric tool electronics soft start module, by delay circuit, SS (soft start) control circuit, phase-shift trigger circuit, high-current switch circuit is formed, SS (soft start) control circuit is formed by the switching tube of little current switching circuit bridge rectifier output in parallel, delay circuit connects the switching tube of little current switching circuit, bridge rectifier output in parallel, trigger tube one end of circuits for triggering connects an input of bridge rectifier, the other end connects the SCR control utmost point of high-current switch circuit, the silicon controlled anode connects another input of bridge rectifier, negative electrode connects the electric capacity of trigger, silicon controlled negative electrode, anode is as exit.
The utility model advantage: volume is little, leading-out terminal is few, cost is low.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model.
Fig. 2 is a circuit diagram of the present utility model.
Fig. 3 is the circuit connection diagram that the utility model uses in electric tool.
Embodiment
As Fig. 1, shown in 2, a kind of electric tool electronics of the utility model soft start module, by delay circuit 1, SS (soft start) control circuit 2, phase-shift trigger circuit 3, high-current switch circuit 4 is formed, SS (soft start) control circuit 2 is formed by the switching tube of little current switching circuit bridge rectifier output in parallel, delay circuit 1 connects the switching tube of little current switching circuit, bridge rectifier output in parallel, trigger tube one end of circuits for triggering 3 connects an input of bridge rectifier, the other end connects the SCR control utmost point of high-current switch circuit 4, the silicon controlled anode connects another input of bridge rectifier, negative electrode connects the electric capacity of trigger, the silicon controlled negative electrode, anode is as exit, and the delay circuit 1 of the utility model electric tool soft starting electronic module is by R
2, R
3, C
2Form R
2, R
3Series connection, C
2, R
3Parallel connection, SS (soft start) control circuit 2 is by switching tube BG, two utmost points and D
1-4Form D
1-4Form bridge rectifier, its output is with little current switch pipe BG parallel connection, the same R of BG base stage
1With R
2Tie point connect, phase-shift trigger circuit 3 is by trigger tube T
2, capacitor C
1Form trigger tube T
2One end connects C
1An end and the input of bridge rectifier, the other end is with controllable silicon T
1The control utmost point connect, high-current switch is mainly by controllable silicon T
1Form controllable silicon T
1The same C of negative electrode
1Connect, other end anode connects with another input of bridge rectifier, and T
1Negative electrode and anode as exit A, B, the control silicon T of the utility model electric tool soft start module
1The resistance R that can in parallel be in series also
4, C
3, and connect another input of bridge rectifier by resistance R 1, the circuit that the utility model uses in electric tool as shown in Figure 3, by electronics soft start module, instrument motor with exit A, B
Singly throw double-pole switch K, power supply is in series.During work, energized, power supply passes through C
1, R
1Input is by D
1-4Form bridge rectifier, produce unidirectional pulsating current, R in the soft start delay circuit 1
2, R
3Dividing potential drop is added on the base stage of little current switch BG of soft starting circuit 2, makes BG have little electric current in the moment of beginning energized, and this initial little electric current is to the capacitor C in the circuits for triggering 3
1With trigger tube T
2Discharge and recharge, produce pulse current, make the instrument slow start.Along with R
2To C
2Charging, C
2On voltage more and more higher, at this moment, following variation is also carried out simultaneously, the electric current that promptly little current switch BG flows through is increasing, the capacitor C in the circuits for triggering 3
1More and more faster with the current pulse frequency that trigger tube T2 produces, flow through controlled bidirectional triode thyristor T
1Electric current increasing, therefore, the instrument motor changes faster and faster.C in delay circuit 1
2Charging is when stablizing, and the electric current that flows through the BG of soft starting circuit 2 also reaches stationary value, and the conducting that promptly reaches capacity finally makes the T of high-current switch 4
1Full conducting makes instrument reach rated speed, thereby finishes instrument soft starter for motor overall process.R in the circuit
4, C
3Be to absorb surge current, protection T
1With.In circuit, determine R
2And C
2Value can be determined soft-start time.Behind power remove, the C in the circuit
2Pass through R
3R is determined in discharge rapidly
3To C
3Discharge time, be repeated priming blanking time.Energized will repeat said process again next time, and (5) are electronics soft start modules.
The characteristics of the utility model circuit are at what: the 1. C of phase-shift trigger circuit 3
1Have two kinds of functions that phase shift triggered and provided the bridge rectifier power supply of soft starting circuit 2 concurrently, therefore needn't be from the independent power taking of civil power; 2. the bridge rectifier of soft starting circuit 2 also has two kinds of functions concurrently, to the C of phase-shift trigger circuit 3
1AC signal is provided, provides DC power supply for little current switch BG again simultaneously.By what above two characteristics are arranged, so the utility model circuit is very simple, this just makes the utility model electronics soft start module have low cost, highly reliable, small size, the few every performance of leading-out terminal and is achieved.
But the utility model also the extensive use what other need in the electrical equipment of soft start.
Claims (3)
1, a kind of electric tool electronics soft start module, it is characterized in that: by delay circuit (1), SS (soft start) control circuit (2), phase-shift trigger circuit (3), high-current switch circuit (4) is formed, SS (soft start) control circuit (2) is formed by the switching tube of little current switching circuit bridge rectifier output in parallel, delay circuit (1) connects the switching tube of little current switching circuit, bridge rectifier output in parallel, trigger tube one end of circuits for triggering (3) connects an input of bridge rectifier, the other end connects the SCR control utmost point of high-current switch circuit (4), the silicon controlled anode connects another input of bridge rectifier, negative electrode connects the electric capacity of trigger, silicon controlled negative electrode, anode is as exit.
2, by the described electric tool soft starting electronic of claim 1 module, it is characterized in that: delay circuit (1) is by R
2, R
3, C
2Form R
2, R
3Series connection, C
2, R
3Parallel connection, SS (soft start) control circuit (2) is by switching tube BG, diode D
1-4Form D
1-4Form bridge rectifier, its output is with little current switch pipe BG parallel connection, the same R of BG base stage
1With R
2Tie point connect, phase-shift trigger circuit (3) is by trigger tube T
2, capacitor C
1Form trigger tube T
2One end connects C
1An end and the input of bridge rectifier, the other end is with controllable silicon T
1The control utmost point connect, high-current switch is mainly by controllable silicon T
1Form controllable silicon T
1The same C of negative electrode
1Connect, other end anode connects with another input of bridge rectifier, and T
1Negative electrode and anode as exit A, B.
3, by claim 1 or 2 described electric tool soft start modules, it is characterized in that: controllable silicon T
1The resistance R that parallel connection is in series
4, C
3, and pass through another input that resistance R 1 connects bridge rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02260617 CN2577504Y (en) | 2002-10-09 | 2002-10-09 | Electronic soft-start module for electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02260617 CN2577504Y (en) | 2002-10-09 | 2002-10-09 | Electronic soft-start module for electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2577504Y true CN2577504Y (en) | 2003-10-01 |
Family
ID=33727629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02260617 Expired - Fee Related CN2577504Y (en) | 2002-10-09 | 2002-10-09 | Electronic soft-start module for electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2577504Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103957636A (en) * | 2014-04-28 | 2014-07-30 | Tcl-罗格朗国际电工（惠州）有限公司 | Two-wire dimming circuit |
| CN111745598A (en) * | 2019-03-28 | 2020-10-09 | 南京德朔实业有限公司 | Electric tool, battery pack and electric tool combination |
-
2002
- 2002-10-09 CN CN 02260617 patent/CN2577504Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103957636A (en) * | 2014-04-28 | 2014-07-30 | Tcl-罗格朗国际电工（惠州）有限公司 | Two-wire dimming circuit |
| CN111745598A (en) * | 2019-03-28 | 2020-10-09 | 南京德朔实业有限公司 | Electric tool, battery pack and electric tool combination |
| CN111745598B (en) * | 2019-03-28 | 2023-06-23 | 南京泉峰科技有限公司 | Electric tool, battery pack and electric tool combination |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20031001 Termination date: 20101009 |