CN101257259A - Hand-hold electric bottle opener special electric power - Google Patents
Hand-hold electric bottle opener special electric power Download PDFInfo
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- CN101257259A CN101257259A CNA2007103007233A CN200710300723A CN101257259A CN 101257259 A CN101257259 A CN 101257259A CN A2007103007233 A CNA2007103007233 A CN A2007103007233A CN 200710300723 A CN200710300723 A CN 200710300723A CN 101257259 A CN101257259 A CN 101257259A
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Abstract
The invention relates to a power supply, especially to a handhold electric bottle opener special-purpose power supply, which is characterized in that an DC electric machine, a second one-way controlled silicon and a third resistor are in series connection between the positive pole of the output end of the bridge rectifier circuit and the earth, wherein, the trigger electrode of the second one-way controlled silicon is connected to the positive pole of the output end of the bridge rectifier circuit through a first bilateral diode and a first resistor connected in series; the mid-point of the first bilateral diode and the first resistor is earthed through a diode and a first one-way controlled silicon connected in series; and the trigger electrode of the first one-way controlled silicon is connected to the mid-point of the second one-way controlled silicon and the third resistor through a second bilateral diode. The invention realizes that the overflowing of the electric bottle opener power supply is controllable, the components are few, and the action is reliable.
Description
Technical field
The present invention relates to a kind of power supply, particularly a kind of hand-hold electric bottle opener special electric power that can set of moment.
Background technology
The electric screw driver that moment can be set requires the coupling mechanism force of the screw square of measuring one's own ability constant, and in the locking process, moment reaches under certain situation, the rotor stall of electric screw driver, at this moment, being applied to the epitrochanterian direct voltage of electric screw driver should cut off immediately, in order to avoid long-time stall burns rotor.The hand electric bottle opener that produce in existing Japan, Taiwan in use; aim at a cross or a sub-screw terminal; with defeating; at this moment the guide rod at screwdriver head rear portion can promote the switch on the power supply; connect the power supply of electric screw driver; after screw tightened, moment reaches requirement, the dc motor power on the electric screw driver cut off, and the protection bottle opener and the article that are locked are not damaged.
Though existing hand electric bottle opener overcurrent protection ability is good; but; because the power supply of bottle opener seals integrated installation; element can't be dismantled; power supply inside is equipped with and is encrypted IC, just can't repair in case damage, and the power protecting circuit complexity; big in narrow space inner member density, so spoilage is very high.
Summary of the invention
The purpose of this invention is to provide a kind of hand-hold electric bottle opener special electric power, used components and parts are few, reliable in action.
For achieving the above object, the technical solution used in the present invention is: comprise switch and bridge rectifier, its special feature is, be in series with direct current machine, second one-way SCR and the 3rd resistance between the positive pole of bridge rectifier output and ground, the trigger electrode of this second one-way SCR is connected with the positive pole of bridge rectifier output by first bidirectional diode, first resistance of series connection;
Wherein the mid point of first bidirectional diode and first resistance is by diode in series, the first one-way SCR ground connection, the trigger electrode of this first one-way SCR connects the mid point of second one-way SCR and the 3rd resistance by second bidirectional diode, and the anode of this first one-way SCR and negative electrode two ends are parallel with second resistance, first electric capacity.
Wherein be parallel with the 4th resistance, second electric capacity at the anode and the negative electrode two ends of second one-way SCR.
The present invention has realized that the overcurrent of electric screw driver power supply is controlled, and used components and parts are few, and reliable in action has realized microminiaturization.
Description of drawings
Accompanying drawing 1 is circuit theory diagrams of the present invention.
Embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing:
The present invention mainly is made up of following three parts:
1, rectifying part: form by K switch 1 and four rectifier diode D1-D4;
2, control section: mainly form by the second unidirectional controllable silicon S CR2, the first bidirectional diode DB1, first resistance R 1, the 4th resistance R 4, second capacitor C 2 etc.:
3, current sample test section: mainly by compositions such as the 3rd resistance R 3, the first unidirectional controllable silicon S CR1, diode D5, first capacitor C 1.
Operation principle of the present invention is as follows:
As shown in Figure 1; in the normally locking process of electric screw driver; the second unidirectional controllable silicon S CR2 triggering and conducting; the first bidirectional diode DB1 purpose is in order to improve the be triggered voltage of conducting of the second unidirectional controllable silicon S CR2; form the surge absorption circuit, protect the second unidirectional controllable silicon S CR2 not by the spike voltage breakdown.In the normally locking process of electric screw driver, the electric current that flows through on the 3rd resistance R 3 is a rated current, and the voltage at the 3rd resistance R 3 two ends can not trigger the first unidirectional controllable silicon S CR1 and make its conducting, is failure to actuate in whole detection loop.
Behind direct current machine M rotor stall, the current peak that flows through on the 3rd resistance R 3 sharply rises.After voltage reached necessarily, the second bidirectional diode DB2 conducting triggered the first unidirectional controllable silicon S CR1 conducting.The conducting of the first unidirectional controllable silicon S CR1 will cause the voltage of first resistance R, 1 lower end sharply to descend, the trigger voltage of the second unidirectional controllable silicon S CR2 reduces, the first not conducting of bidirectional diode DB1, cause the second unidirectional controllable silicon S CR2 to turn-off (electric current in loop is less than the silicon controlled holding current), thereby cut off the epitrochanterian voltage of direct current machine M at the zero crossing of power rectifier.
Because the first unidirectional controllable silicon S CR1 anode has been connected to first capacitor C 1 of afterflow effect, when the direct voltage zero passage that rectification goes out, the first unidirectional controllable silicon S CR1 keeps conducting by 1 discharge of first capacitor C.Because the existence of diode D5, make the discharge on first capacitor C 1 can the false triggering second unidirectional controllable silicon S CR2, guarantee that the trigger voltage of action back, the protection loop second unidirectional controllable silicon S CR2 is in electronegative potential always.
The present invention is by reach necessarily when moment in the electric screw driver work after, the DC motor rotor stall, and the principle that corresponding rotor current must significantly rise, this electric current rising signals of sampling is cut off epitrochanterian voltage.As long as unclamp screwdriver head, at this moment switch disconnects, and circuit promptly recovers normal condition.
Claims (2)
1, a kind of hand-hold electric bottle opener special electric power, comprise switch (K1) and bridge rectifier, it is characterized in that: be in series with direct current machine (M), second one-way SCR (SCR2) and the 3rd resistance (R3) between the positive pole of bridge rectifier output and ground, the trigger electrode of this second one-way SCR (SCR2) is connected with the positive pole of bridge rectifier output by first bidirectional diode (DB1), first resistance (R1) of series connection;
Wherein the mid point of first bidirectional diode (DB1) and first resistance (R1) is by diode in series (D5), first one-way SCR (SCR1) ground connection, the trigger electrode of this first one-way SCR (SCR1) connects the mid point of second one-way SCR (SCR2) and the 3rd resistance (R3) by second bidirectional diode (DB2), and the anode of this first one-way SCR (SCR1) and negative electrode two ends are parallel with second resistance (R2), first electric capacity (C1).
2, a kind of hand-hold electric bottle opener special electric power as claimed in claim 1 is characterized in that: wherein be parallel with the 4th resistance (R4), second electric capacity (C2) at the anode and the negative electrode two ends of second one-way SCR (SCR2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007103007233A CN101257259B (en) | 2007-12-28 | 2007-12-28 | Hand-held electric bottle opener special electric power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007103007233A CN101257259B (en) | 2007-12-28 | 2007-12-28 | Hand-held electric bottle opener special electric power |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101257259A true CN101257259A (en) | 2008-09-03 |
| CN101257259B CN101257259B (en) | 2010-06-09 |
Family
ID=39891794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007103007233A Expired - Fee Related CN101257259B (en) | 2007-12-28 | 2007-12-28 | Hand-held electric bottle opener special electric power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101257259B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108994769A (en) * | 2018-08-21 | 2018-12-14 | 凡己科技(苏州）有限公司 | It is a kind of for improving the electric screw driver of copper installation precision |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2461203Y (en) * | 2001-01-04 | 2001-11-21 | 王德煌 | Switch drive circuit of electric screwdriver |
| CN2496389Y (en) * | 2001-08-07 | 2002-06-26 | 谢明毅 | Vacuum cleaner governor |
| CN2517219Y (en) * | 2001-11-06 | 2002-10-16 | 舒国馥 | Electronic trigger for high-tension sodium lamp |
| CN2572669Y (en) * | 2002-10-11 | 2003-09-10 | 罗元蔚 | Brake positioning circuit for electric driven screwdriver |
| CN2796240Y (en) * | 2005-04-01 | 2006-07-12 | 王德煌 | Electric opener control circuit |
-
2007
- 2007-12-28 CN CN2007103007233A patent/CN101257259B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108994769A (en) * | 2018-08-21 | 2018-12-14 | 凡己科技(苏州）有限公司 | It is a kind of for improving the electric screw driver of copper installation precision |
| CN108994769B (en) * | 2018-08-21 | 2021-01-15 | 凡己科技(苏州）有限公司 | A electronic bottle opener for improving copper bar installation accuracy |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101257259B (en) | 2010-06-09 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20100609 Termination date: 20131228 |