CN2848189Y - Welding auto guarding mask - Google Patents
Welding auto guarding mask Download PDFInfo
- Publication number
- CN2848189Y CN2848189Y CN 200520119514 CN200520119514U CN2848189Y CN 2848189 Y CN2848189 Y CN 2848189Y CN 200520119514 CN200520119514 CN 200520119514 CN 200520119514 U CN200520119514 U CN 200520119514U CN 2848189 Y CN2848189 Y CN 2848189Y
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- CN
- China
- Prior art keywords
- backguy
- sheet glass
- mass colour
- face shield
- fixed
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- Expired - Fee Related
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Abstract
The utility model relates to an automatic protecting face mask for electric welding, which comprises a face mask, a visual window, light transmission glass, ink color glass, a converting device of the ink color glass and a circuit. The automatic protecting face mask for electric welding has a structure that a shielding ink color glass sheet which can be rotated, or can be turned, or can be slid upwards and downwards is arranged corresponding to the visual window. The center of the ink color glass sheet is fixed with a shaft sleeve which is arranged on a fixed shaft. The fixed shaft is fixed to a support frame of the face mask. A belt pulley is arranged on the shaft sleeve. The belt pulley is connected with a sleeve tube on a motor shaft by a pull wire. The motor is fixed to the support frame of the face mask. When people work, the face mask is worn on a head. When arc light is generated by electric welding, a photoresistor is irradiated by light so as to switch on the circuit. The motor M rotates and drives the ink color glass sheet to rotate or turn or slide upwards and downwards, and the visual window is shielded.
Description
Technical field
This utility model relates to electric welding protective mask, mainly is meant a kind of by changing the automatic protecting mask for electric welding of protecting eyes between the transparent glass of mass colour glass and face shield visual windows automatically.
Background technology
Knownly can produce very intensive arc light when electric welding field, this light can cause damage to people's eyes, so all will use protective cover to protect eyes during electric welding field.Normally used protective cover is fairly simple, and it mainly contains a face shield, and a visual windows is arranged on face shield, is embedded with the mass colour glass of a frequency modulated light on this window, a handle is arranged below the face shield.During work, hold protective cover on the other hand, another hands is held electrode holder, owing to often take away protective cover, so that watch the effect of welding, thus very inconvenient, also influenced work efficiency, also might damage eyes.Recently, there is data to introduce the improvement project of protective cover, but all desirable not to the utmost.
Summary of the invention
The purpose of this utility model provides a kind of automatic protecting mask for electric welding, and this face shield band needn't take off on head, drives a minitype motor driving mass colour glass fast moving by the photoconductive resistance on the face shield, thereby reaches the effect of protective spectacles.
The realization the technical solution of the utility model is: this face shield comprises face shield, visual windows, transparent glass, mass colour glass, mass colour glass conversion equipment and circuit, its primary structure is that described face shield is provided with visual windows, to should visual windows being provided with the rotatable mass colour sheet glass that blocks, this mass colour sheet glass is provided with the inkless transparent region of corresponding visual windows, in mass colour sheet glass center fixation axle sleeve is arranged, this axle sleeve is installed on the fixed axis, this fixed axis is fixed on the support of face shield, on axle sleeve, be provided with a belt pulley, this belt pulley telescopic joint by on backguy and the motor shaft, this motor is fixed on the support of face shield; Between backguy and support, be connected with extension spring; On the mass colour sheet glass, be provided with locating piece, on support, be provided with the limited block that can contact with locating piece; Also be provided with the photoconductive resistance of control motor on the described face shield.
This technical scheme also comprises:
Corresponding visual windows is provided with turnover mass colour sheet glass, and this mass colour sheet glass is fixed on the axle, and this is fixed on the framework of face shield, and its axle head is provided with belt pulley, and this belt pulley is wrapped in by backguy on the sleeve pipe of a motor shaft, and this motor is fixed on the framework; Between backguy and framework, be connected with extension spring; The other end at axle is provided with locating rod, is provided with the spacer pin that can contact with locating rod on framework.
Corresponding visual windows is provided with two rotatable mass colour sheet glass that block, wherein on the axle sleeve that every is fixed on separately, this axle sleeve is installed on the axle, this is separately fixed on the support of face shield, be respectively equipped with belt pulley on each axle sleeve, be connected with backguy between this belt pulley, this backguy is wrapped on the sleeve pipe of a motor shaft, and this motor is fixed on the support of face shield; Between backguy and support, be connected with extension spring; On the mass colour sheet glass, be provided with locating piece, on support, be provided with the limited block that can contact with locating piece.
Both sides in visual windows are provided with chute, are provided with the mass colour sheet glass that can slide up and down in this chute, and this mass colour sheet glass is connected on the motor shaft by a backguy, and this motor is fixed on the face shield; On face shield, be provided with limited block; Between mass colour sheet glass and face shield, be connected with extension spring.
Also be connected with a standby backguy in the described backguy, another termination one opening folder of this standby backguy.
Described mass colour sheet glass is provided with a holding piece, and this holding piece upper end is connected on the motor shaft by a backguy, is connected with extension spring between its lower end and the face shield; Also be connected with a standby backguy in the upper end of this holding piece, another termination one opening folder of this standby backguy.
The anglec of rotation of described mass colour sheet glass is 45 °.
The flip angle of described mass colour sheet glass is 90 °.
The anglec of rotation of described mass colour sheet glass is 135-180 °.
Described circuit comprises a direct current power supply E and is connected audion VT1, VT2, VT3, photoconductive resistance R1, Zener diode VD1, adjustable resistance R2 and motor in the electric power loop; Wherein connect the VT1 base stage through capacitor C 1, resistance R 3 between R1 and the R2, the VT1 emitter stage connects VT2, VT3 base stage respectively, the VT1 colelctor electrode connects the E positive pole through resistance R 4, the VT2 colelctor electrode connects the E positive pole through resistance R 5, the VT3 colelctor electrode connects the E positive pole through motor M, M two ends cross-over connection diode VD1 wherein, the VT2 emitter stage connects the E negative pole.
The beneficial effect that the utlity model has: by photoconductive resistance is set on face shield, realize automatic rotation of mass colour glass or upset or spur blocking visual windows, need not take face shield, but the both hands operation.That this face shield has is simple in structure, protect eyes better and advantage such as increase work efficiency.
Description of drawings
Fig. 1 is a profile sketch map of the present utility model, and expression is positive.
Fig. 2-the 5th, the rear view of Fig. 1, expression structure.
Fig. 6 is circuit theory diagrams.
The specific embodiment
Below in conjunction with accompanying drawing this utility model is described further
Fig. 2-the 5th, several different structures of this face shield under a total design, but the purpose that reaches is the same, all realizes on face shield 1 and visual windows 3 bases.
See Fig. 2, mass colour sheet glass 13 is to be circle, be installed in the centre position, just in time can block visual windows 3, this mass colour sheet glass 13 is provided with inkless transparent region (also can cut out two in the above), the corresponding visual windows 3 of inkless transparent region under the normal condition, sheet glass 13 center fixation have axle sleeve 5, axle sleeve 5 is installed on the fixed axis 16, axle 16 is fixed on the support 10 of face shield 3, adorn a belt pulley 17 on the axle sleeve 5, this belt pulley 17 telescopic joint by on backguy 11 and the motor shaft, motor 12 is fixed on the support 10.Between backguy 11 and support 10, be connected with extension spring 6.Also be connected with a standby backguy 8 in backguy 11, a sleeve pipe 9 is passed in this backguy 8, and it is termination one opening folder 7 down.On mass colour sheet glass 13 and support 10, be fixed with locating piece 14 and limited block 15 respectively.During work, face shield 1 band (is being had elastic cord) on the head on the face shield, when electric welding produced arc light, photoconductive resistance 2 was subjected to illumination and connects circuit, and motor M is rotated and driven mass colour sheet glass 13 and rotates 45, and just in time shelter from visual windows 3 this moment, can safety work.When stopping operation, arc light disappears, and circuit is not worked, and at this moment under the effect of extension spring 6, mass colour sheet glass 13 returns to original state.Under the situation that does not have electricity, can catch in its mouth moving opening folder 7, also can realize the rotation of mass colour sheet glass 13.
See Fig. 3, it blocks separately visual windows 3 respectively by two blocks of round mass colour sheet glass 13, and operation principle is identical with Fig. 2.
See Fig. 4, mass colour sheet glass 13 is the rectangle sheet glass, this mass colour sheet glass 13 is fixed on the axle 22, and this is fixed on the framework 20 of face shield, and this axle head is provided with belt pulley 17, be connected with backguy 11 on this belt pulley 17, this backguy 11 is wrapped on the sleeve pipe of a motor shaft, and this motor 12 is fixed on the framework 20, is connected with extension spring 6 between backguy 11 and framework 20, the other end at axle 22 has locating rod 18, is fixed with the spacer pin 19 that can contact with locating rod 18 on framework 20.During work, 90 ° of mass colour sheet glass 13 upsets shelter from visual windows 3, and other operation principle is identical with Fig. 2.
See Fig. 5, be provided with chute 24 in the both sides of visual windows 3, rectangle mass colour sheet glass 13 is contained in the chute 24 and can slides up and down, and a holding piece 25 is arranged in the middle of sheet glass 13, these holding piece 25 upper ends are connected on the motor shaft by a backguy 11, are connected with extension spring 6 between its lower end and the face shield 1.During work, mass colour sheet glass 13 upwards slides visual windows 3 is sheltered from, and other operation principle is identical with Fig. 2.23 is fulcrums among the figure.
The circuit working principle: two-stage adopts negative-feedback circuit in parallel before the circuit, is made up of audion VT1, VT2, resistance R 3, R4, R5 etc., to guarantee the stability of circuit.When strong illumination, photoconductive resistance R1 resistance diminishes, and electric current is through the VT1 conducting, and causing the VT2 base stage is negative voltage, and then the VT3 base voltage raises and triggers the VT3 conducting, and motor M is rotated.VT1 ends when no strong illumination, and then the VT2 base voltage raises and triggers the VT2 conducting, and then the VT3 base stage is a negative voltage, and then VT3 ends, and motor M stops operating.
Claims (10)
1. automatic protecting mask for electric welding, comprise face shield, visual windows, transparent glass, mass colour glass, mass colour glass conversion equipment and circuit, it is characterized in that described face shield is provided with visual windows, to should visual windows being provided with the rotatable mass colour sheet glass that blocks, this mass colour sheet glass is provided with the inkless transparent region of corresponding visual windows, in mass colour sheet glass center fixation axle sleeve is arranged, this axle sleeve is installed on the fixed axis, this fixed axis is fixed on the support of face shield, on axle sleeve, be provided with a belt pulley, this belt pulley telescopic joint by on backguy and the motor shaft, this motor is fixed on the support of face shield; Between backguy and support, be connected with extension spring; On the mass colour sheet glass, be provided with locating piece, on support, be provided with the limited block that can contact with locating piece; Also be provided with photoconductive resistance on the described face shield.
2. automatic protecting mask for electric welding as claimed in claim 1, it is characterized in that corresponding visual windows is provided with turnover mass colour sheet glass, this mass colour sheet glass is fixed on the axle, this is fixed on the framework of face shield, its axle head is provided with belt pulley, this belt pulley is wrapped in by backguy on the sleeve pipe of a motor shaft, and this motor is fixed on the framework; Between backguy and framework, be connected with extension spring; The other end at axle is provided with locating rod, is provided with the spacer pin that can contact with locating rod on framework.
3. automatic protecting mask for electric welding as claimed in claim 1, it is characterized in that corresponding visual windows is provided with two rotatable mass colour sheet glass that block, wherein on the axle sleeve that every is fixed on separately, this axle sleeve is installed on the axle, this is separately fixed on the support of face shield, is respectively equipped with belt pulley on each axle sleeve, is connected with backguy between this belt pulley, this backguy is wrapped on the sleeve pipe of a motor shaft, and this motor is fixed on the support of face shield; Between backguy and support, be connected with extension spring; On the mass colour sheet glass, be provided with locating piece, on support, be provided with the limited block that can contact with locating piece.
4. automatic protecting mask for electric welding as claimed in claim 1, it is characterized in that being provided with chute in the both sides of visual windows, be provided with the mass colour sheet glass that can slide up and down in this chute, this mass colour sheet glass is connected on the motor shaft by a backguy, and this motor is fixed on the face shield; On face shield, be provided with limited block; Between mass colour sheet glass and face shield, be connected with extension spring.
5. as claim 1 or 2 or 3 described automatic protecting mask for electric welding, it is characterized in that also being connected with in the described backguy a standby backguy, another termination one opening folder of this standby backguy.
6. as claim 1 or 4 described automatic protecting mask for electric welding, it is characterized in that described mass colour sheet glass is provided with a holding piece, this holding piece upper end is connected on the motor shaft by a backguy, is connected with extension spring between its lower end and the face shield; Also be connected with a standby backguy in the upper end of this holding piece, another termination one opening folder of this standby backguy.
7. automatic protecting mask for electric welding as claimed in claim 1, the anglec of rotation that it is characterized in that described mass colour sheet glass is 45 °.
8. automatic protecting mask for electric welding as claimed in claim 2, the flip angle that it is characterized in that described mass colour sheet glass is 90 °.
9. automatic protecting mask for electric welding as claimed in claim 3, the anglec of rotation that it is characterized in that described mass colour sheet glass is 135-180 °.
10. as claim 1 or 2 or 3 or 4 described automatic protecting mask for electric welding, it is characterized in that described circuit comprises a direct current power supply E and is connected audion VT1, VT2, VT3, photoconductive resistance R1, Zener diode VD1, adjustable resistance R2 and motor in the electric power loop; Wherein connect the VT1 base stage through capacitor C 1, resistance R 3 between R1 and the R2, the VT1 emitter stage connects VT2, VT3 base stage respectively, the VT1 colelctor electrode connects the E positive pole through resistance R 4, the VT2 colelctor electrode connects the E positive pole through resistance R 5, the VT3 colelctor electrode connects the E positive pole through motor M, M two ends cross-over connection diode VD1 wherein, the VT2 emitter stage connects the E negative pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520119514 CN2848189Y (en) | 2005-11-23 | 2005-11-23 | Welding auto guarding mask |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520119514 CN2848189Y (en) | 2005-11-23 | 2005-11-23 | Welding auto guarding mask |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2848189Y true CN2848189Y (en) | 2006-12-20 |
Family
ID=37520664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520119514 Expired - Fee Related CN2848189Y (en) | 2005-11-23 | 2005-11-23 | Welding auto guarding mask |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2848189Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105415109A (en) * | 2015-11-30 | 2016-03-23 | 乐清市脱众五金工具有限公司 | Safe grinding device for construction reinforcement bars |
| CN107595475A (en) * | 2017-03-13 | 2018-01-19 | 安徽恩惠安全防护科技有限公司 | A kind of New head-mounted face shield |
-
2005
- 2005-11-23 CN CN 200520119514 patent/CN2848189Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105415109A (en) * | 2015-11-30 | 2016-03-23 | 乐清市脱众五金工具有限公司 | Safe grinding device for construction reinforcement bars |
| CN107595475A (en) * | 2017-03-13 | 2018-01-19 | 安徽恩惠安全防护科技有限公司 | A kind of New head-mounted face shield |
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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 |