CN201404356Y - Double control electronic light valve used for electric welding shield - Google Patents
Double control electronic light valve used for electric welding shield Download PDFInfo
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- CN201404356Y CN201404356Y CN2009200333235U CN200920033323U CN201404356Y CN 201404356 Y CN201404356 Y CN 201404356Y CN 2009200333235 U CN2009200333235 U CN 2009200333235U CN 200920033323 U CN200920033323 U CN 200920033323U CN 201404356 Y CN201404356 Y CN 201404356Y
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- 238000003466 welding Methods 0.000 title claims abstract description 30
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 59
- 230000001681 protective effect Effects 0.000 claims abstract description 29
- 230000035945 sensitivity Effects 0.000 claims abstract description 18
- 239000011521 glass Substances 0.000 claims description 39
- 239000003990 capacitor Substances 0.000 claims description 15
- 238000001914 filtration Methods 0.000 claims description 9
- 230000001276 controlling effect Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract 1
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000006059 cover glass Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 238000000904 thermoluminescence Methods 0.000 description 1
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Abstract
The utility model discloses a double control electronic light valve used for an electric welding shield, which comprises a DC power supply, a framework arranged on the electric welding shield, a protective lens arranged in the framework, a circuit board, a photosensitive circuit which can real-timely induce the extraneous light, and an electronic switch controlled through the manual mode or the teeth biting mode. One or two protective lenses are provided, and at least one protective lens is a liquid crystal light valve. The circuit is provided with a control circuit for controlling the liquidcrystal light valve. The control circuit consists of an on-off switch K1, a square-wave generating circuit which is connected with the DC power supply and supplies the power for the liquid crystal light valve, and a sensitivity adjustment circuit which can control and adjust the square-wave generating circuit. The photosensitive circuit is connected with the sensitivity adjustment circuit. The utility model has simple structure, small volume, low cost, convenient use and operation, and flexible operation mode. The utility model has excellent using effect, and can effectively solve the problemthat the electric welding shield cannot effectively process safety protection for the vision of the welder.
Description
Technical field
This utility model relates to a kind of electronic light valve, especially relates to a kind of double-cotrolled type electric welding protective cover electronic light valve.
Background technology
In the arc welding field, employed traditional protective mast mostly is the hand-held electric welder's helmet greatly, and this hand-held electric welder's helmet all is that one of embedding can stop infrared ray and ultraviolet dark glass on its window, and during use, hand shield blocks back and forth.Use in this type of hand-held electric welder's helmet welding process, if cover face with face shield before the welding, then the welder will cannot see solder joint; If the reuse face shield covers face after the striking, welder's vision and face will be subjected to the stimulation of electric arc high light simultaneously so, in addition, take hands of welder during use for a long time, operation inconvenience.
Along with technical development, nowadays also there is a kind of protective mast that is applicable to the employing large-area liquid crystal photo chromic glass in the thermoluminescence welding cutting as the protective cover glass screen on the market, the control section of its glass screen has has only adopted photocell element, does not have sensitivity adjustment device and other control circuit part; Though what have has adopted the sensitivity adjustment device; but the equal more complicated of its control circuit and protective roof structure; thereby the fair needed technical standard of weldering cover that all do not reach of existing protective cover photo chromic glass; can not play complete protective effect to welder's vision; and large-area liquid crystal photo chromic glass cost is too high, and is very uneconomical.
The utility model content
Technical problem to be solved in the utility model is at above-mentioned deficiency of the prior art; a kind of double-cotrolled type electric welding protective cover electronic light valve is provided; it is simple in structure, volume is little, cost is low and it is easy to operate to use, flexible operation mode, result of use are good, can effectively solve the electric welding protective cover can not effectively carry out safeguard protection to welder's vision problem.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of double-cotrolled type electric welding protective cover electronic light valve, it is characterized in that: comprise dc source, be installed on the framework on the electric welding protective cover and be installed in protection glass in the framework, and circuit board, in real time extraneous light is carried out induced photosensitive circuit and can sting the electrical switch that flowing mode is controlled by manual or tooth; The quantity of described protection glass is one or two, on the described framework corresponding be provided with one or about two installing ports that the described protection glass of confession is installed; When the quantity of described protection glass was one, described protection glass was a liquid crystal light valve; When the quantity of described protection glass was two, two protection glass were liquid crystal light valve or one and are liquid crystal light valve and another black ink eyeglass; Described circuit board is provided with the control circuit that liquid crystal light valve is controlled; Described control circuit joins by on and off switch K1, with dc source and square wave generation circuit that liquid crystal light valve is powered and the sensitivity adjustment circuit that square wave generation circuit carries out regulating and controlling formed, and described photosensitive circuit and sensitivity adjustment circuit join; Described electrical switch is for carrying out the gauge tap of bright dark control to liquid crystal light valve and it joins by cable and circuit board, being serially connected in the current supply circuit that dc source powers to liquid crystal light valve of described electrical switch.
Be connected to a DC-DC booster circuit that dc source voltage is promoted between described dc source and square wave generation circuit, the voltage signal of dc source is transported to square wave generation circuit behind DC-DC booster circuit and current rectifying and wave filtering circuit; Described electrical switch is serially connected in the current supply circuit between current rectifying and wave filtering circuit and the square wave generation circuit.
Described square wave generation circuit comprises G1, G2, G3 and four NAND gate of G4, wherein G1 and G4 are the NAND gate of three inputs, G2 and G3 are the NAND gate of two inputs, an input of G1, G2, G3 and four NAND gate of G4 all joins with sensitivity adjustment circuit, the outfan of G1 joins with another input of G2 and G3 respectively, and another input of the outfan of G3 and G4 joins; The outfan of G3 is connected to the outfan of G1 and another input of G1 through resistance R 5 and R6 respectively after capacitor C 3; The 3rd input of G1 and G4 joins with the positive supply outfan of DC-DC booster circuit and the negative pole of dc source respectively; The outfan of G2 and G4 joins with the positive-negative power end of liquid crystal light valve respectively.
Described DC-DC booster circuit comprises self-excited oscillator, inductance L 1, capacitor C 1, resistance R 1 and the stabilivolt D2 that is made up of audion Q1 and Q2; Described current rectifying and wave filtering circuit comprises diode D1 and filter capacitor C2; The positive pole of described dc source is exported behind inductance L 1 and diode D1 successively; The base stage of the colelctor electrode of described audion Q1 and audion Q2 is joined; The base stage of audion Q1 is divided two-way, and one the tunnel joins with the negative pole of dc source after resistance R 1, and another road connects the anode of diode D1 after capacitor C 1; The emitter stage of audion Q1 connects the positive pole of dc source, and the collector and emitter of audion Q2 connects the anode of diode D1 and the negative pole of dc source respectively; The anode of stabilivolt D2 connects the base stage of audion Q1 and the negative electrode that its negative electrode meets diode D1, and the negative electrode of diode D1 is connected to the negative pole of dc source behind filter capacitor C2.
Described photosensitive circuit is a photodiode; Described sensitivity adjustment circuit is by potentiometer W1, resistance R 3 and the R4 of serial connection form successively, the negative pole of the sliding end of potentiometer W1 and diode D1 joins, potentiometer W1 is connected to the positive pole of photodiode successively behind resistance R 3 and R4, the negative pole of photodiode and the negative pole of dc source join.
Described circuit board is installed in the framework, and the positive-negative power end of described liquid crystal light valve also is connected to a resistance R 7.
The shape of described framework and liquid crystal light valve is rectangle, described framework plastic frame body.
Described dc source is the external power supply that is installed in the intravital built-in power of frame or is positioned at the framework outside, and described dc source is a rechargeable battery.
Described electrical switch is for to be inserted on the circuit board by USB interface; Described USB interface is 4 needle interfaces, and correspondence is provided with 4 USB interface slots on the described circuit board; Described rechargeable battery charges by charger, and other 2 needle interfaces of charger by described USB interface are inserted on the circuit board.
Described liquid crystal light valve divides four layers and be followed successively by coated reflective eyeglass, two black liquid crystal light valve sheets and a transparent glass sheet from outside to inside.
This utility model compared with prior art has the following advantages: 1, simple in structure and processing and fabricating convenience.2, the control circuit simplicity of design of liquid crystal light valve and circuit board volume are little, and electronic chip has been realized the miniaturization design.3, result of use is good, adopt the square-wave signal that square wave generation circuit produced to make liquid crystal light valve produce the variation conversion of light and shade, the square-wave signal that square wave generation circuit produces can effectively overcome the color trapping phenomena that liquid crystal light valve is produced when pure DC voltage is worked.4, control circuit is reasonable in design and use easy and simple to handle, in the actual use, by photosensitive circuit is that photodiode GD1 responds to extraneous light in real time and it is delivered to sensitivity adjustment circuit after optical signal that is detected is converted to the signal of telecommunication, according to the real-time institute of photosensitive circuit detection signal, being that potentiometer W1 is corresponding by sensitivity adjustment circuit controls adjustment to square wave generation circuit afterwards.5, do not need to use the large-area liquid crystal photo chromic glass, the area that its liquid crystal light valve that uses is a liquid crystal color-changing glass is less, thereby can reduce cost greatly.In addition, two can further be dwindled the area of liquid crystal light valve when being used to install the protection glass installing port about framework is provided with, and can one in two protection glass another is common black ink eyeglass for liquid crystal light valve, therefore, can further reduce cost of manufacture.6, easy to install and use and widely applicable, in the actual application, the framework that only needs to be equipped with liquid crystal light valve be installed in can use on arbitrary electric welding protective cover and result of use good.7, flexible operation mode, except that above-mentioned by photosensitive circuit to liquid crystal light valve carry out light-operated; Also can use electrical switch that liquid crystal light valve is directly artificially controlled, and the control mode of used electrical switch is more, in the actual mechanical process, operator can be according to concrete practical application, carry out control operation in mode manual or that tooth is stung, particularly: the handle type electric welding helmet is installed the manual mode electrical switch, and the helmet-type electric welding helmet is installed tooth control formula electrical switch, and electrical switch adopts the switch with waterproof and withstand voltage properties.In addition,, thereby replace very conveniently, can satisfy hygienic requirements because electrical switch is inserted on the circuit board flexibly by USB interface.In a word, this utility model is simple in structure, volume is little, cost is low and it is easy to operate to use, flexible operation mode, result of use are good, can effectively solve the electric welding protective cover can not effectively carry out safeguard protection to welder's vision problem.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is the external structure sketch map of this utility model first specific embodiment.
Fig. 2 is a circuit block diagram of the present utility model.
Fig. 3 is the circuit theory diagrams of Fig. 2.
Fig. 4 is the external structure sketch map of this utility model second specific embodiment.
Fig. 5 is the external structure sketch map of this utility model the 3rd specific embodiment.
Description of reference numerals:
The 1-framework; The 2-circuit board; The 3-liquid crystal light valve;
The 4-photodiode; The 5-dc source; The 6-control circuit;
The 7-square wave generation circuit; The 8-sensitivity adjustment circuit; The 9-photosensitive circuit;
The 10-DC-DC booster circuit; The 11-current rectifying and wave filtering circuit; The 12-charger;
The 13-electrical switch.
The specific embodiment
As shown in Figure 1 and Figure 2, this utility model comprises dc source 5, be installed on the framework 1 on the electric welding protective cover and be installed in protection glass in the framework 1, and circuit board 2, in real time extraneous light carried out induced photosensitive circuit 9 and can sting the electrical switch 13 that flowing mode is controlled by manual or tooth.The quantity of described protection glass is one or two, on the described framework 1 corresponding be provided with one or about two installing ports that the described protection glass of confession is installed.
When the quantity of described protection glass was one, described protection glass was a liquid crystal light valve 3; When the quantity of described protection glass was two, two protection glass were liquid crystal light valve 3 or one and are liquid crystal light valve 3 and another black ink eyeglass.
Described circuit board 2 is provided with the control circuit 6 that liquid crystal light valve 3 is controlled.Described control circuit 6 joins by on and off switch K1, with dc source 5 and liquid crystal light valve 3 is the light valve GF square wave generation circuit 7 of powering and the sensitivity adjustment circuit 8 that square wave generation circuit 7 carries out regulating and controlling formed that described photosensitive circuit 9 and sensitivity adjustment circuit 8 join.In addition, four layers of described liquid crystal light valves 3 minutes and be followed successively by coated reflective eyeglass, two black liquid crystal light valve sheets and a transparent glass sheet from outside to inside, that is to say that this liquid crystal light valve 3 is made up of for four layers a coated reflective eyeglass, two black liquid crystal light valve sheets and a transparent glass sheet.Described electrical switch 13 joins by cable and circuit board 2 for the gauge tap that liquid crystal light valve 3 carried out bright dark control and its, being serially connected in the current supply circuit that 5 pairs of liquid crystal light valves 3 of dc source power of described electrical switch 13.
In the present embodiment, the quantity of described protection glass is one and is liquid crystal light valve 3 that described framework 1 middle part correspondence is provided with the installing port that the brilliant light valve 3 of a feed flow is installed.Described circuit board 2 is installed in the framework 1, in the actual application, circuit board 2 can be placed on framework 1 outside.
7 of described dc source 5 and square wave generation circuits are connected to a DC-DC booster circuit 10 that dc source 5 voltages are promoted, and the voltage signal of dc source 5 is transported to square wave generation circuit 7 behind DC-DC booster circuit 10 and current rectifying and wave filtering circuit 11.In the actual use, when the voltage of dc source 5 satisfies the running voltage of liquid crystal light valve 3, then do not need DC-DC booster circuit 10.
In conjunction with Fig. 3, described DC-DC booster circuit 10 comprises self-excited oscillator, inductance L 1, capacitor C 1, resistance R 1 and the stabilivolt D2 that is made up of audion Q1 and Q2.Described current rectifying and wave filtering circuit 11 comprises diode D1 and filter capacitor C2.
The positive pole of described dc source 5 is exported behind inductance L 1 and diode D1 successively; The base stage of the colelctor electrode of described audion Q1 and audion Q2 is joined; The base stage of audion Q1 is divided two-way, and one the tunnel joins with the negative pole of dc source 5 after resistance R 1, and another road connects the anode of diode D1 after capacitor C 1; The emitter stage of audion Q1 connects the positive pole of dc source 5, and the collector and emitter of audion Q2 connects the anode of diode D1 and the negative pole of dc source 5 respectively; The anode of stabilivolt D2 connects the base stage of audion Q1 and the negative electrode that its negative electrode meets diode D1, and the negative electrode of diode D1 is connected to the negative pole of dc source 5 behind filter capacitor C2.
Described square wave generation circuit 7 comprises G1, G2, G3 and four NAND gate of G4, wherein G1 and G4 are the NAND gate of three inputs, G2 and G3 are the NAND gate of two inputs, an input of G1, G2, G3 and four NAND gate of G4 all joins with sensitivity adjustment circuit 8, the outfan of G1 joins with another input of G2 and G3 respectively, and another input of the outfan of G3 and G4 joins; The outfan of G3 is connected to the outfan of G1 and another input of G1 through resistance R 5 and R6 respectively after capacitor C 3; The 3rd input of G1 and G4 joins with the positive supply outfan (being the negative electrode of diode D1) and the negative pole of dc source 5 of DC-DC booster circuit 10 respectively; The outfan of G2 and G4 joins with the positive-negative power end of liquid crystal light valve 3 respectively.
Described photosensitive circuit 9 is a photodiode 4.Described sensitivity adjustment circuit 8 is by potentiometer W1, resistance R 3 and the R4 of serial connection form successively, the negative electrode of the sliding end of potentiometer W1 and diode D1 joins, potentiometer W1 is connected to the anode of photodiode 4 successively behind resistance R 3 and R4, the negative pole of the negative electrode of photodiode 4 and dc source 5 joins.The positive-negative power end of described liquid crystal light valve 3 also is connected to a resistance R 7.
In the actual use, described dc source 5 is for being installed in the built-in power in the framework 1 or being positioned at the external power supply of framework 1 outside, and described dc source 5 is charged by external special charger 12 for rechargeable battery and its.In the present embodiment, described electrical switch 13 is inserted on the circuit board 2 by USB interface.Described USB interface is 4 needle interfaces, and correspondence is provided with 4 USB interface slots on the described circuit board 2.Described rechargeable battery charges by charger 12, and other 2 needle interfaces of charger 12 by described USB interface are inserted on the circuit board 2.The shape of described framework 1 and liquid crystal light valve 3 is rectangle, and described framework 1 plastic frame body, and in addition, described circuit board 2 and photodiode 4 are installed in framework 1 right side.Described on and off switch K1 is serially connected in the current supply circuit of dc source 5.
As shown in Figure 4, in the present embodiment, the quantity of described protection glass is two, two installing ports that the described protection glass of confession is installed about corresponding being provided with on the described framework 1, and at least one is a liquid crystal light valve 3 in while two protection glass.The shape of described framework 1 and liquid crystal light valve 3 is rectangle, and described circuit board 2 and photodiode 4 are installed in framework 1 middle part.In the present embodiment, the structure of remainder, annexation and function are all identical with embodiment 1.
As shown in Figure 5, in the present embodiment, as different from Example 2: framework 1 outside drawn and is placed on by described circuit board 2 by cable, when actual processing and fabricating, the installing port that two described protection glass of confession are installed can be arranged on framework 1 positive middle part like this.In the present embodiment, the structure of remainder, annexation and function are all identical with embodiment 2.
The above; it only is preferred embodiment of the present utility model; be not that this utility model is imposed any restrictions; everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection domain of technical solutions of the utility model according to this utility model technical spirit.
Claims (10)
1. double-cotrolled type electric welding protective cover electronic light valve, it is characterized in that: comprise dc source (5), be installed on the framework (1) on the electric welding protective cover and be installed in protection glass in the framework (1), and circuit board (2), in real time extraneous light is carried out induced photosensitive circuit (9) and can sting the electrical switch (13) that flowing mode is controlled by manual or tooth; The quantity of described protection glass is one or two, described framework (1) go up correspondence be provided with one or about two installing ports that the described protection glass of confession is installed; When the quantity of described protection glass was one, described protection glass was liquid crystal light valve (3); When the quantity of described protection glass was two, two protection glass were liquid crystal light valve (3) or one and are liquid crystal light valve (3) and another black ink eyeglass; Described circuit board (2) is provided with the control circuit (6) that liquid crystal light valve (3) is controlled; Described control circuit (6) joins by on and off switch K1, with dc source (5) and square wave generation circuit (7) that liquid crystal light valve (3) is powered and the sensitivity adjustment circuit (8) that square wave generation circuit (7) carries out regulating and controlling formed, and described photosensitive circuit (9) and sensitivity adjustment circuit (8) join; Described electrical switch (13) is for carrying out the gauge tap of bright dark control to liquid crystal light valve (3) and it joins by cable and circuit board (2), being serially connected in the current supply circuit that dc source (5) powers to liquid crystal light valve (3) of described electrical switch (13).
2. according to the described double-cotrolled type electric welding of claim 1 protective cover electronic light valve, it is characterized in that: be connected to a DC-DC booster circuit (10) that dc source (5) voltage is promoted between described dc source (5) and square wave generation circuit (7), the voltage signal of dc source (5) is transported to square wave generation circuit (7) behind DC-DC booster circuit (10) and current rectifying and wave filtering circuit (11); Described electrical switch (13) is serially connected in the current supply circuit between current rectifying and wave filtering circuit (11) and the square wave generation circuit (7).
3. according to claim 1 or 2 described double-cotrolled type electric welding protective cover electronic light valve, it is characterized in that: described square wave generation circuit (7) comprises G1, G2, G3 and four NAND gate of G4, wherein G1 and G4 are the NAND gate of three inputs, G2 and G3 are the NAND gate of two inputs, an input of G1, G2, G3 and four NAND gate of G4 all joins with sensitivity adjustment circuit (8), the outfan of G1 joins with another input of G2 and G3 respectively, and another input of the outfan of G3 and G4 joins; The outfan of G3 is connected to the outfan of G1 and another input of G1 through resistance R 5 and R6 respectively after capacitor C 3; The 3rd input of G1 and G4 joins with the positive supply outfan of DC-DC booster circuit (10) and the negative pole of dc source (5) respectively; The outfan of G2 and G4 joins with the positive-negative power end of liquid crystal light valve (3) respectively.
4. according to the described double-cotrolled type electric welding of claim 2 protective cover electronic light valve, it is characterized in that: described DC-DC booster circuit (10) comprises self-excited oscillator, inductance L 1, capacitor C 1, resistance R 1 and the stabilivolt D2 that is made up of audion Q1 and Q2; Described current rectifying and wave filtering circuit (11) comprises diode D1 and filter capacitor C2;
The positive pole of described dc source (5) is exported behind inductance L 1 and diode D1 successively; The base stage of the colelctor electrode of described audion Q1 and audion Q2 is joined; The base stage of audion Q1 is divided two-way, and one the tunnel joins with the negative pole of dc source (5) after resistance R 1, and another road connects the anode of diode D1 after capacitor C 1; The emitter stage of audion Q1 connects the positive pole of dc source (5), and the collector and emitter of audion Q2 connects the anode of diode D1 and the negative pole of dc source (5) respectively; The anode of stabilivolt D2 connects the base stage of audion Q1 and the negative electrode that its negative electrode meets diode D1, and the negative electrode of diode D1 is connected to the negative pole of dc source (5) behind filter capacitor C2.
5. according to the described double-cotrolled type electric welding of claim 4 protective cover electronic light valve, it is characterized in that: described photosensitive circuit (9) is a photodiode (4); Described sensitivity adjustment circuit (8) is by potentiometer W1, resistance R 3 and the R4 of serial connection form successively, the negative pole of the sliding end of potentiometer W1 and diode D1 joins, potentiometer W1 is connected to the positive pole of photodiode (4) successively behind resistance R 3 and R4, the negative pole of the negative pole of photodiode (4) and dc source (5) joins.
6. according to the described double-cotrolled type electric welding of claim 2 protective cover electronic light valve, it is characterized in that: described circuit board (2) is installed in the framework (1), and the positive-negative power end of described liquid crystal light valve (3) also is connected to a resistance R 7.
7. according to claim 1 or 2 described double-cotrolled type electric welding protective cover electronic light valve, it is characterized in that: the shape of described framework (1) and liquid crystal light valve (3) is rectangle, described framework (1) plastic frame body.
8. according to claim 1 or 2 described double-cotrolled type electric welding protective cover electronic light valve, it is characterized in that: described dc source (5) is for being installed in the built-in power in the framework (1) or being positioned at the outside external power supply of framework (1), and described dc source (5) is a rechargeable battery.
9. according to claim 1 or 2 described double-cotrolled type electric welding protective cover electronic light valve, it is characterized in that: described electrical switch (13) is for to be inserted on the circuit board (2) by USB interface; Described USB interface is 4 needle interfaces, and described circuit board (2) is gone up correspondence and is provided with 4 USB interface slots; Described rechargeable battery charges by charger (12), and other 2 needle interfaces of charger (12) by described USB interface are inserted on the circuit board (2).
10. according to claim 1 or 2 described double-cotrolled type electric welding protective cover electronic light valve, it is characterized in that: described liquid crystal light valve (3) divides four layers and be followed successively by coated reflective eyeglass, two black liquid crystal light valve sheets and a transparent glass sheet from outside to inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200333235U CN201404356Y (en) | 2009-05-27 | 2009-05-27 | Double control electronic light valve used for electric welding shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200333235U CN201404356Y (en) | 2009-05-27 | 2009-05-27 | Double control electronic light valve used for electric welding shield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201404356Y true CN201404356Y (en) | 2010-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200333235U Expired - Fee Related CN201404356Y (en) | 2009-05-27 | 2009-05-27 | Double control electronic light valve used for electric welding shield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201404356Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103040555A (en) * | 2011-10-14 | 2013-04-17 | 韩海民 | Mask |
| CN104107107A (en) * | 2013-04-19 | 2014-10-22 | 李骥超 | Goggles assembly structure in automatic variable-light welding mask |
| WO2016037544A1 (en) * | 2014-09-09 | 2016-03-17 | 泰克曼(南京)电子有限公司 | Auto-darkening welding mask having curved liquid crystal panel |
-
2009
- 2009-05-27 CN CN2009200333235U patent/CN201404356Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103040555A (en) * | 2011-10-14 | 2013-04-17 | 韩海民 | Mask |
| CN104107107A (en) * | 2013-04-19 | 2014-10-22 | 李骥超 | Goggles assembly structure in automatic variable-light welding mask |
| WO2016037544A1 (en) * | 2014-09-09 | 2016-03-17 | 泰克曼(南京)电子有限公司 | Auto-darkening welding mask having curved liquid crystal panel |
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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: 20100217 Termination date: 20120527 |