CN2387886Y - Automatic mask for welders - Google Patents
Automatic mask for welders Download PDFInfo
- Publication number
- CN2387886Y CN2387886Y CN 99243015 CN99243015U CN2387886Y CN 2387886 Y CN2387886 Y CN 2387886Y CN 99243015 CN99243015 CN 99243015 CN 99243015 U CN99243015 U CN 99243015U CN 2387886 Y CN2387886 Y CN 2387886Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- mike
- coil
- control circuit
- liquid crystal
- 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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- Liquid Crystal (AREA)
Abstract
The utility model discloses an automatic welding mask. The inside and the outside of an observation window of the mask are respectively provided with two permanent magnets with opposite polarities, a coil is arranged between the permanent magnets at both sides, a filter is fixedly connected with the coil, and a microphone is arranged on the mask below the observation window. Or the observation window is provided with a liquid crystal light changing sheet, and the coil and the microphone, or the liquid crystal sheet and the microphone are controlled by a control circuit in which a power supply is arranged. So long as air is blown, light and dark states of the welding mask can be controlled. The utility model has the characteristics of good visual sensation and convenient use, and the utility model is favorable for labor protection.
Description
This utility model relates to a kind of electric welder's helmet, a kind of specifically automatic welding mask.
At present, the electric welding operator adopts hand-held or hood type face shield as preventing the utensil that the electro-welding arc exciting eye is fine mostly, because the ink sheet light transmission on the face shield form is poor, when observing the welding situation, face shield must be removed, and brings many inconvenience to the operator.Chinese patent CN2265784Y discloses a kind of automatic welding mask, this face shield form place is furnished with the ink sheet in regular grid hole, with the attached sheet metal that is provided with the similar grid of ink sheet hole of ink sheet with pasting, sheet metal is fixed on the electric magnet, and being provided with coil with the electric magnet cooperating, the output voltage of electric welding machine is connected on the input of control circuit.It is the break-make of whether welding control coil according to electric welding, thereby making the electric magnet action drive sheet metal moves, make the grid hole on the sheet metal be in dislocation or relative position with grid hole on the ink sheet, promptly by whether welding Synchronization Control form printing opacity situation, solve the problem that face shield must move about, improved work efficiency.But must be connected two long leads between this face shield and the electric welding machine, and, observe the welding situation with the grid hole, visually very uncomfortable.
The purpose of this utility model is to provide does not need lead and the good automatic welding mask of control easily of vision between a kind of electric welding machine and the face shield.
For achieving the above object, electric welder's helmet of the present utility model respectively is provided with two opposite polarity permanent magnets in the interior outside of form, is provided with coil between the permanent magnet of both sides, and optical filter is connected with this coil stationary; Be provided with mike on the face shield below the form, coil and mike are by the control circuit control of built-in power.
Above-mentioned control circuit is made of Mike's amplifying circuit, bistable circuit, commutating circuit and power save circuit.
Another kind of technical scheme is: the form place is provided with a liquid crystal and becomes mating plate, is provided with mike on face shield below the form, and liquid crystal becomes mating plate and mike is controlled by the control circuit of built-in power.
Above-mentioned control circuit is made of Mike's amplifying circuit and bistable circuit.
Because technique scheme has adopted the control circuit of built-in power, so can save two leads between electric welding machine and face shield, structure is more reasonable, helps welding person's safety operation.Because the form place adopts an optical filter, and when stopping welding, optical filter shifts out form, and the form light transmission of exposing is good, block vision is not convenient to observe again.Mike on the face shield is a control assembly, when blowing out a burst of air-flow, mouth just promotes mike and amplifying circuit thereof, make the bistable circuit upset once, commutating circuit just makes the voltage on the coil change a polarity, coil just drives optical filter and slides to corresponding position under the effect of magnetic field force, promptly cover form or expose form, perhaps, by the switch of bistable circuit control liquid crystal change mating plate, getting electric is deepening, dead electricity promptly brightens, therefore, as long as can control the light and shade two states of weldering cover just give a puff, control easily, easy to operate, and power consumption is little.
Below in conjunction with the drawings and specific embodiments this utility model is described in further detail.
Fig. 1 is the front view of this utility model automatic welding mask;
Fig. 2 is the cutaway view of Fig. 1 along the A-A line;
Fig. 3 is the rearview of Fig. 1;
Fig. 4 is a face shield control circuit schematic diagram shown in Figure 1;
Fig. 5 is another kind of embodiment front view;
Fig. 6 is an embodiment control circuit schematic diagram shown in Figure 5.
By Fig. 1,2,3 as seen, middle part, the medial and lateral of the form 1 of this utility model automatic welding mask respectively be provided with two opposite polarity permanent magnets 2,2 ', both sides permanent magnet 2 and 2 ' between be provided with coil 3 with the permanent magnet cooperating, optical filter 4 is fixedlyed connected with coil 3, also be provided with mike 5 on the face shield below the form 1, mike 5 and coil 3 are by the control circuit control of built-in power.
As seen from Figure 4, the built-in dc source BT of this control circuit
1, comprise Mike's amplifying circuit, bistable circuit, commutating circuit and power save circuit.By audion BG
2, resistance R
2, R
3, R
4, R
5And capacitor C
1Constitute Mike's amplifying circuit, mike MIC is connected with this circuit, by audion BG
3, BG
4And resistance R
8, R
9Constitute bistable circuit, by audion BG
8, BG
9, BG
10, BG
11, BG
12, BG
13Constitute commutating circuit, coil L
1Be connected with this circuit, by audion BG
7Constitute power save circuit.
Automatic welding mask shown in Figure 5 is the another kind of embodiment of this utility model, and this face shield form place is provided with a liquid crystal and becomes mating plate 6, also is provided with mike 5 on the face shield, and liquid crystal becomes mating plate 6 and mike 5 is controlled by the control circuit of built-in power.Referring to Fig. 5, the built-in dc source BT of this control circuit
1, comprise Mike's amplifying circuit and bistable circuit, by audion BG
1, resistance R
2, R
3, R
4, R
5And capacitor C
1Constitute Mike's amplifying circuit, mike MIC is connected with this circuit, by audion BG
3, BG
4And resistance R
8, R
9Constitute bistable circuit, liquid crystal becomes mating plate R
YBy the bistable electro way control switch, getting electric is deepening, and dead electricity promptly brightens, and power consumption is minimum.
Referring to Fig. 4 or Fig. 6, its operation principle is described: put on face shield, blow out a burst of air-flow with mouth and promote mike and amplifying circuit thereof, make the bistable circuit upset once, commutating circuit just makes the voltage on the coil change a polarity, coil just drives optical filter and slides to corresponding position under the effect of magnetic field force, promptly cover form or expose form, perhaps, make the bistable circuit upset once control the switch that liquid crystal becomes mating plate, getting electric is deepening, and dead electricity promptly brightens.
Claims (4)
1, a kind of automatic welding mask, it is characterized in that: respectively be provided with two opposite polarity permanent magnets (2,2 ') in the interior outside of form (1), between both sides permanent magnet (2,2 '), be provided with coil (3), optical filter (4) is fixedlyed connected with this coil (3), be provided with mike (5) on the face shield of form (1) below, said coil (3) and mike (5) are by the control circuit control of built-in power.
2, automatic welding mask according to claim 1 is characterized in that: said control circuit is made of Mike's amplifying circuit, bistable circuit, commutating circuit and power save circuit.
3, a kind of automatic welding mask is characterized in that: be provided with liquid crystal and become mating plate (6) on form, be provided with mike (5) on the face shield below the form, said liquid crystal becomes mating plate (6) and mike (5) is controlled by the control circuit of built-in power.
4, automatic welding mask according to claim 3 is characterized in that: said control circuit is made of Mike's amplifying circuit and bistable circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99243015 CN2387886Y (en) | 1999-09-14 | 1999-09-14 | Automatic mask for welders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99243015 CN2387886Y (en) | 1999-09-14 | 1999-09-14 | Automatic mask for welders |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2387886Y true CN2387886Y (en) | 2000-07-19 |
Family
ID=34029442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99243015 Expired - Fee Related CN2387886Y (en) | 1999-09-14 | 1999-09-14 | Automatic mask for welders |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2387886Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108524099A (en) * | 2017-03-02 | 2018-09-14 | 林肯环球股份有限公司 | Welder's helmet with head-up display and voice command |
-
1999
- 1999-09-14 CN CN 99243015 patent/CN2387886Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108524099A (en) * | 2017-03-02 | 2018-09-14 | 林肯环球股份有限公司 | Welder's helmet with head-up display and voice command |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |