CN203619771U - Hard hat self-darkening welding mask - Google Patents

Abstract

The utility model discloses an automatic change light electric welding face guard of safety helmet formula is applied to electrician's electron technical field, including safety helmet and automatic change light electric welding face guard, automatic change light electric welding face guard passes through the stretch cord and the safety rope is connected with the safety helmet, and the goggles is installed on the well upper portion of automatic change light electric welding face guard body, and the goggles adopts LCD liquid crystal and protective glass matched with structure, and the face guard inner wall has the PCB circuit board to be used for controlling the LCD liquid crystal transmittance, installs solar cell on the face guard and drives the PCB circuit board. The utility model provides an electric power operation field use automatic change light electric welding face guard can't wear the problem of safety helmet simultaneously, can protect operating personnel's eyes, head, face, neck, simple structure, simple to operate has alleviateed intensity of labour, has improved work efficiency.

Description

Hard hat self-darkening welding mask

technical field

The utility model relates to an electric welding protective mask, in particular to a helmet-type variable light protective mask applied in the field of electric and electronic technology.

Background technique

When welding in the field of electrical and electronic technology, the arc and sparks generated will damage the eyes, and the splash of welding residue will burn the face. In order to protect the eyes and face, it is necessary to wear a protective mask. Traditional electric welding protective masks need to be held by one hand, so that this hand cannot perform other work. In order to free hands, an automatic darkening welding protective mask has appeared on the market. This mask can be worn directly on the user's face. Adjustment of the brightness of the goggles. This mask can only protect the eyes and face, and has no protection for the head.

Chinese patent 201110267631.6 discloses a protective mask for electric welding. The ordinary safety helmet and the protective mask are hinged together through pins, which can not only protect the head, but also protect the eyes under the premise of freeing hands. However, due to the The pin is hinged with the helmet, so the mask will turn up and down during use, which cannot guarantee the stability of the mask, and it still needs to be held by hand when necessary. the

Utility model content

The technical problem to be solved by the utility model is to provide a helmet-type automatic darkening welding mask, which can solve the problem that the operator needs to hold the welding mask with one hand during the working process, and the welding sparks will damage the human eyes, and at the same time, it can solve the problem of splashing of welding residue Problems leading to head, face and neck injuries for operators.

In order to solve the problems of the technologies described above, the technical scheme adopted by the utility model is as follows:

A safety helmet type automatic darkening welding mask comprises a safety helmet and an automatic darkening welding mask. The self-darkening welding mask is arranged in front of the safety helmet. There are two through holes on both sides of the bottom and the middle and upper sides of the self-darkening welding mask respectively. The ropes are bolted to the ventilation holes on the corresponding sides of the safety helmet; two through holes at the bottom of the self-darkening welding mask are respectively fixed with a safety rope for positioning the lower part of the mask by mutual cooperation.

The further improvement of the utility model is that: the air holes on both sides of the safety helmet are also bolted with noose sleeves for passing through the safety rope.

The further improvement of the utility model is that: the automatic darkening photoelectric welding mask includes a mask body, and goggles are installed on the middle and upper part of the mask body. Located outside the LCD liquid crystal;

The outer wall of the mask body above the goggles is equipped with a photoelectric sensor, and the inner wall of the mask body below the goggles is installed with a PCB circuit board, protection level operation buttons, sensitivity operation buttons and a power switch; the PCB circuit board is welded with an amplification circuit and an identification circuit. , signal conversion circuit and control circuit, the input end of the amplifying circuit is connected to the signal end of the photoelectric sensor, the output end of the amplifying circuit is connected to the input end of the control circuit through the identification circuit, and the input end of the control circuit is also operated with the protection level through the signal conversion circuit The output end of the button and the sensitivity operation button are connected, and the output end of the control circuit is connected with the controlled end of the LCD liquid crystal sheet; a solar battery for powering each circuit of the PCB circuit board is also installed on the outer wall of the mask body under the goggles. the

Owing to having adopted above-mentioned technical scheme, the technological progress that the utility model obtains is as follows:

The helmet-type automatic darkening welding mask solves the problem that the automatic darkening welding mask cannot be worn at the same time in the electric power operation site, and there is no need to hold the welding mask. The automatic darkening welding mask ensures that the operator's eyes, head, face, and neck will not be hurt during electric welding operations. The structure is simple, the installation is convenient, the labor intensity is reduced, and the work efficiency is improved.

There are two through holes on both sides of the bottom and the middle and upper sides of the self-darkening welding mask. The through holes on both sides of the middle and upper parts are connected to the ventilation holes of the helmet through elastic cords. The length can be adjusted. The face shield and hard hat fit effectively. Two through holes at the bottom of the self-darkening welding mask are respectively fixed with a safety rope for positioning the lower part of the mask by mutual cooperation. One end of the safety rope passes through the through hole at the bottom of the self-darkening welding mask, and the other end passes through the rope sleeve , put one end of the safety rope on both sides through the rope sleeve and tie it to the mandible of the operator, so that the safety helmet and the automatic darkening welding mask can be fixed together, and the mask will not turn up and down during use, ensuring the safety of the mask Stability, the structure is simple and easy to implement. When used in electrical work sites, it is worn on the head, and there is no need to hold the self-darkening welding mask.

The safety helmet is embedded inside the upper edge of the automatic darkening welding mask, conforms to the shape of the automatic darkening welding mask, and is integrated with the welding mask, which can effectively protect the operator's head, face and neck.

The self-darkening welding mask is used to generate strong arc sparks at the moment of arcing, and the generated arc sparks first pass through the protective glass outside the LCD liquid crystal sheet to filter out harmful ultraviolet rays and infrared rays. At the same time, the photoelectric sensor receives the welding arc light signal and converts the light signal into an electrical signal. After the electrical signal passes through the amplification circuit, identification circuit and control circuit on the PCB circuit board, it drives the deflection of the liquid crystal inside the LCD liquid crystal sheet, making the goggles lens from a transparent state. It becomes opaque, blocks the transmission of visible light, realizes the purpose of automatic shading, and ensures that the eyes of electric welders will not be hurt. The filter degree and sensitivity of the LCD liquid crystal sheet can be set through the signal conversion circuit as required. The PCB circuit board is driven by solar cells, which is energy-saving and environmentally friendly.

Description of drawings

Fig. 1: external schematic diagram of the utility model;

Figure 2: A schematic side view of Figure 1;

Figure 3: Internal schematic diagram of Figure 1;

Figure 4: Circuit structure diagram of the utility model automatic darkening welding mask.

Among them: 1. Safety helmet, 2. Auto-darkening welding mask, 3. Goggles, 4. Breathing hole, 5. Rope cover, 6. Safety rope, 7. Elastic rope, 8. Through hole, 9. Block, 10. Protection level operation button, 11. Sensitivity operation button, 12. Power switch, 13. Solar battery auxiliary power supply compartment.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail:

A safety helmet type automatic darkening welding mask, as shown in FIG. 1 , includes a safety helmet 1 and an automatic darkening welding mask 2 . There are ventilation holes 4 on both sides of the safety helmet 1. As shown in FIG. Two through holes 8 are respectively arranged on both sides of the bottom and the middle and upper sides of the self-darkening welding mask 2 . The two through holes 8 in the upper part of the self-darkening welding mask 2 are respectively bolted to the air holes 4 on the corresponding side of the safety helmet 1 through an elastic cord 7, and one end of the elastic cord 7 is passed through the upper part of the self-darkening welding mask 2 The through hole 8 of side, the end fastens a length greater than the elongated block 9 of through hole 8 diameters, and the other end is fixed on the vent hole 4, and automatic darkening welding mask 2 tops are fixed with safety helmet 1. Two through holes 8 at the bottom of the self-darkening welding mask 2 are respectively fixed with a safety rope 6 for positioning the lower part of the mask by mutual cooperation, and one end of the safety rope 6 passes through a through hole 8 at the bottom of the self-darkening welding mask 2 , the end is fastened to the strip-shaped block 9, the other end passes through the noose 5, and one end of the safety rope 6 passing through the noose 5 is tied to the mandible of the operator, so that the safety helmet 1 can be connected with the automatic The light-changing welding masks 2 are connected together and can be stably fixed on the head.

The upper edge of the self-darkening welding mask 2 protrudes backwards and matches with the edge of the safety helmet 1 to ensure the safety of the operator's head, face and neck.

The middle part of automatic darkening welding mask 2 is provided with goggles 3, and goggles 3 adopts the structure that LCD liquid crystal sheet and protective glass cooperate, and LCD liquid crystal sheet is positioned at mask inner side, and protective glass is positioned at LCD liquid crystal sheet outside. The automatic darkening photoelectric welding mask 2 above the goggles 3 is provided with a photoelectric sensor, and a PCB circuit board is installed on the inner wall of the mask body below the goggles 3, and an amplifier circuit, a discrimination circuit, a signal conversion circuit and a control circuit are welded on the PCB circuit board. circuit, the input end of the amplifying circuit is connected to the signal end of the photoelectric sensor, the output end of the amplifying circuit is connected to the input end of the control circuit through the identification circuit, and the output end of the control circuit is connected to the controlled end of the LCD liquid crystal sheet. The automatic darkening welding mask 2 inner wall below the goggles 3 is also provided with a solar battery auxiliary compartment 11, a solar battery is installed in the solar battery auxiliary compartment 11, and the solar battery is used as a power source for driving each circuit on the PCB circuit board to provide work. Voltage. The design of the circuit can prevent the interference of natural light, and it can be used normally even in outdoor sunlight.

An operation button is installed inside the automatic darkening welding mask 2, as shown in FIG. 3 . The output ends of the protection level operation button 10 and the sensitivity operation button 11 are connected to the input end of the control circuit via the signal conversion circuit. The power switch 12 is connected in series between the PCB circuit board and the solar battery.

The connection relationship between the circuits of the automatic darkening welding mask 2 described in the utility model is shown in FIG. 4 . First turn on the power switch 12, then turn on the protection level operation button 10 and the sensitivity operation button 11, set the protection level and sensitivity, and then perform electric welding operation. Because the goggles 3 eyeglasses are in a transparent state when the automatic darkening welding mask 2 is not performing electric welding operations, the operator can clearly see the weld and the welding position. When welding, a strong arc spark is generated at the moment of arcing. The welding arc first passes through the protective glass outside the LCD liquid crystal sheet to filter out harmful ultraviolet and infrared rays. At the same time, the photoelectric sensor receives the welding arc signal and sends The optical signal is converted into an electrical signal, and the electrical signal is amplified by the amplifying circuit, and the useful signal is extracted by the identification circuit, and then output to the control circuit. The control circuit drives the deflection of the liquid crystal inside the LCD liquid crystal sheet to block the transmission of visible light and realizes automatic shading. Purpose. the

Claims (3)

1. Hard hat-type automatic darkening welding mask, including a safety helmet (1) and an automatic darkening welding mask (2), characterized in that: the automatic darkening welding mask (2) is set in front of the safety helmet (1) There are two through holes (8) on both sides of the bottom and the middle and upper sides of the self-darkening welding mask (2), and the two through-holes (8) on the middle and upper part of the self-darkening welding Elastic cords (7) are bolted to the vent holes (4) on the corresponding sides of the safety helmet (1); one is respectively fixed on the two through holes (8) at the bottom of the self-darkening welding mask (2) for mutual cooperation. Locate the safety wire (6) on the lower part of the mask. 2. The safety helmet type self-darkening welding mask according to claim 1, characterized in that: the ventilation holes (4) on both sides of the safety helmet (1) are also bolted with safety ropes (6) for passing through noose (5). 3. The helmet-type automatic darkening welding mask according to claim 1, characterized in that: the automatic darkening welding mask (2) includes a mask body, and goggles (3) are installed on the middle and upper part of the mask body. The eyepiece adopts the structure of LCD liquid crystal sheet and protective glass, the LCD liquid crystal sheet is located inside the mask, and the protective glass is located outside the LCD liquid crystal sheet; A photoelectric sensor is arranged on the outer wall of the mask body above the goggles, and a PCB circuit board, a protection level operation button (10), a sensitivity operation button (11) and a power switch (12) are installed on the inner wall of the mask body below the goggles; the PCB circuit An amplifier circuit, a discrimination circuit, a signal conversion circuit and a control circuit are welded on the board, the input terminal of the amplifier circuit is connected to the signal terminal of the photoelectric sensor, the output terminal of the amplifier circuit is connected to the input terminal of the control circuit through the discrimination circuit, and the input terminal of the control circuit is also The signal conversion circuit is respectively connected to the output terminals of the protection level operation button 10 and the sensitivity operation button 11, and the output terminal of the control circuit is connected to the controlled terminal of the LCD liquid crystal sheet; The outer wall of the mask body below the goggles is also equipped with a solar cell for powering each circuit of the PCB circuit board.

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