JPS63262153A - Protective mask for welding - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] This invention relates to an improvement in a protective surface for welding.

[Conventional technology]

The welding protective face has a light-blocking filter attached to the eye position of the facepiece in order to protect the face and eyes from sparks and light during welding. There are two types of protective surfaces for welding: a hand shield, which is held in the hand, and a helmet type, which is worn on the worker's head or safety helmet.

The light-blocking filter makes it almost impossible to see anything other than the intense light rays generated during welding, so it is necessary to perform work without passing the light-blocking filter until just before welding.

For the helmet-shaped protective mask, a transparent plate is attached to the inside of the light-blocking filter, and the light-blocking filter can be opened and closed using a spring, so that pre-welding work and welding work can be done through the light-blocking filter while wearing it on the face. It is. The work involves opening the light-blocking filter to perform pre-welding work, and during welding, closing the light-blocking filter to perform welding.

[Problem that the invention seeks to solve]

However, with conventional helmet-shaped protective surfaces, opening and closing of the light-blocking filter is done using one hand or violently shaking the head, so it is easy to lose control of torches, welding rods, etc.

Because they are unable to use both hands when starting the welding process, which is the most important part of the welding process, they may fail to weld or require the assistance of an assistant depending on the item being welded.

In addition, since the inside of the protective surface has poor ventilation, there are disadvantages in that the operator's breath becomes suffocated, the transparent plate becomes cloudy, or it becomes stuffy and stuffy.

SUMMARY OF THE INVENTION In view of the shortcomings of the conventional helmet-shaped protective surface, the present invention aims to enable switching between viewing through a light-blocking filter and viewing without passing through a light-blocking filter without using hands, and to ventilate the protective surface. The purpose is to improve sexuality.

Means for Solving Problem c] This invention consists of a lower surface (2) and a lower surface (3), a light-shielding filter (4) is provided on the upper surface (2), and the lower end and lower surface of the light-shielding filter (4) The surface (3) forms a see-through range A in which the outside can be seen.

[Effect]

In this invention, the lower end and lower surface (3) of the light blocking filter (4)
Since this forms a see-through range A in which the outside can be seen, when the line of sight is within the see-through range A, the outside welding position can be seen without passing through the light shielding filter (4). From this state, if you lower your head and look at the welding position, your line of sight will move out of the viewing range and enter the light-shielding filter (4), allowing you to see the welding position through the light-shielding filter (4). In this way, you can see through the light-shielding filter (4) 7 and through 4' by simply moving your head up and down.

In addition, the protective surface is divided into an upper surface (2) and a lower surface (3), and when forming the transparent range A, the upper surface (2) and the lower surface (3) are separated.
) so that the protective surface can be ventilated.

〔Example〕

An embodiment of this invention will be described based on the drawings.

FIGS. 1 and 2 illustrate the -lume-shaped protective surface (1) according to the present invention, and the protective surface (1) is the upper surface (
2) and a lower surface (3), and the lower surface (2) is connected to the upper surface (
3) is rotatably attached to the inside. Upper surface (2)
The material of the lower surface (3) is hulled fiber or Bakelite.

The upper surface (2) has a front surface (2a) and side surfaces (2b) formed in a U-shape, and a head (2c) formed in a curved shape,
A light-blocking filter (4
) is fitted. The light-shielding filter (4) is a lens or a plate, and various types are used according to the light-shielding degree number of the JIs standard.

A protective surface mounting tool (5) is rotatably attached to the rear upper end of the side surface (2b). The attachment device (5) consists of a temporal band (6) and a parietal band (7), both of which can be adjusted in length. head(
2c) has a large diagonal cutout at the rear.

The lower surface (3) has a front surface (3a) and a side surface (3b) curved in a U-shape, and the rear end of the side surface (3b) is connected to the side surface (2b) of the upper surface (2). 8), it is rotatably attached. The lower surface (3) is the upper surface (2
) The lower surface (3) can be moved in and out of the upper surface (2) by rotating the lower surface (3). In addition, a chin rest (9) is rotatably attached inside the lower surface (3), and the chin rest (9) has a slide hole (1o).
The front and rear positions can be adjusted using the .

Next, a method of using the helmet-shaped protective face constructed as described above will be explained.

The protective face (1) of this embodiment is of a type that is worn directly on the worker's head, and before wearing it, the temporal band (5) of the wearing device (5) is
6) and the length of the parietal band (7), and also adjust the length of the chin rest (
Adjust the front and rear positions of 9). By attaching the attachment device (5) to the head and the chin rest 7 (9) to the chin, the protective mask 1) can be fixed to the face. The upper surface (2) and the lower surface (3) can each be rotated up and down independently.

Next, the positions of the upper surface (2) and the lower surface (3) are adjusted to form a see-through range A as shown in FIG. 3 (a>(b). In the see-through range A, the light blocking filter (4) This is the part that is located below and allows you to see the outside welding position B without passing through the light shielding filter (4).The vertical width of the see-through range A is determined as appropriate depending on the welding position and preference.

During the work, the line of sight C is placed within the viewing range A until just before welding, as shown in FIG. 3(a). That is, the perspective range A
Work while looking at welding position B. Then, at the same time as welding begins, the head is lowered to the state shown in FIG. 3(b). The line of sight C leaves the viewing range A and enters the light-blocking filter (4),
The operator can see the welding position through the light blocking filter (4).

From the above, in this invention, it is possible to switch between viewing through the light-blocking filter (4) and viewing without passing through the light-blocking filter (4) by simply moving your head up and down. Therefore, it is possible to quickly switch between the two states with just a few movements.
Torches, welding rods, etc. will no longer go awry. Furthermore, since the welding process can be performed with both hands at the start of welding, welding failures can be prevented and the assistance of an assistant becomes unnecessary. For example, when temporary fixing is performed before welding, it is necessary to frequently repeat the operation of looking through the light shielding filter (4) and looking through it without passing through it while adjusting the groove. However, by using the protective surface of this invention, it is possible to adjust the bevel with one hand and temporarily fasten it above and below the head, which not only eliminates mistakes but also improves efficiency by more than 5 times compared to conventional methods. can be raised.

Further, when the protective surface (1) is divided into an upper surface (2) and a lower surface (3) to form a see-through area A, a gap 1 is created, so that ventilation can be performed within the protective surface (1). Therefore, it is possible to eliminate the suffocation of the light-shielding filter, the stifling of the worker, and the stuffiness of the worker. Therefore, the user can work or walk for long periods of time while wearing the protective mask (1) on his/her face.

In this embodiment, the head (2C) of the upper surface (2) is further cut out and the lower surface (3) is placed at a position away from the face, so that the gap m, as shown in FIG. n occurs, and the protective surface (1) can be further ventilated.

Further, in this embodiment, since the lower surface (3) is rotatably attached to the upper surface (2), the vertical width of the see-through range A can be freely changed. Furthermore, since the upper surface (2) is rotatable with respect to the mounting tool (5), the position of the see-through range A can be freely changed according to the welding position B.

In addition, since the upper surface (2) and the lower surface (3) are shifted back and forth, the Ube surface (3) can be stored low in the upper surface (2), and the gap l can be reduced. The front and rear G can be widened to further improve breathability. Furthermore, since the lower surface (3) can be adjusted in front and rear positions by the slide hole (10), the lower surface (3) can be brought closer to the face. As a result, not only can the eyes be further protected, but the field of view of the person holding the welding machine can be greatly expanded. As shown in Figure 3, if the lower surface (2) is placed closer to the face, the lower surface (4)
This is because the lower limit of the perspective range A can be expanded.

Figures 5(a) and 5(b) show the upper surface (2) and lower surface (
3), and these modified examples are shown on the upper surface (
2) and the lower surface (3) are automatically pressed together to form a transparent area A. (a) shows a light-shielding filter (5) with a transparent part (11) on the lower end, and (b) shows a transparent part (11) on the lower surface (3).
It shows what was formed. Upper surface (2) and lower surface (
By overlapping 3), the face can be further protected. Further, since the transparent part (11) blocks or reduces ultraviolet rays during welding, there is an advantage that even if some light rays enter the eyes at the start of welding, the eyes will not be damaged. still,
The transparent portion (11) may be provided on both the light blocking filter (4) and the lower surface (3).

It goes without saying that the protective face according to the present invention can also be used in a type that is attached to a safety helmet.

〔Effect of the invention〕

In this invention, the lower end and lower surface (3) of the light blocking filter (4)
Since the transparent viewing range A is formed by the above, it is possible to switch between viewing through the light-blocking filter (4) and viewing without passing through the light-shielding filter (4) by simply moving your head up and down. Therefore, at the time of starting welding, which is the most important part of the welding operation, it is possible to improve work efficiency and accuracy, and it is possible to eliminate the need for assistance from an assistant.

Divided into upper surface (2) and lower surface (3), transparent area A
The gaps created when forming the protective surface can improve ventilation within the protected surface. Therefore, it is possible to eliminate clouding of the light-shielding filter and the worker's breathlessness and stuffiness, and it is possible to work or walk for long periods of time while wearing the protective mask over the face.

[Brief explanation of drawings]

1 to 5 are drawings showing embodiments of the present invention. 1st
The figure is a perspective view of the helmet-shaped protective face according to the present invention, seen from the front. Figure 2 is a perspective view of the same seen from the rear. Figure 3(a)
(b) is an explanatory diagram showing the state of use, in which (a) shows a state in which the line of sight is within the see-through range, and (b) shows a state in which the line of sight is within the light-blocking filter. FIG. 4 is an explanatory diagram showing the perspective range when the lower surface is placed away from the face. FIGS. 5(a) and 5(b) are drawings showing modified examples, and (a)
) is an explanatory view showing a light-shielding filter with a transparent part provided at the lower end, and (b) is an explanatory view showing a light-shielding filter with a transparent part provided on the lower surface. (1)...Protective surface (2)...Top surface (3)...Bottom surface (4)...Light blocking filter (11)...Transparent part
A...Visibility range 1IlllB...Welding position C...
Line of sight 1. m, n...gap

Claims (3)

[Claims] 1. A helmet-shaped welding protective mask that is attached to the worker's head or safety helmet has an upper surface (2) and a lower surface (3).
), a light-shielding filter (4) is provided on the upper surface (2), and the lower end of the light-shielding filter (4) and the lower surface (3) form a see-through range A through which the outside can be seen. Protective surface for welding. 2. A welding protective surface according to claim 1, characterized in that the lower surface (3) is rotatably attached to the upper surface (2). 3. 3. The welding protective surface according to claim 1, wherein the upper surface (2) and the lower surface (3) are arranged so as to be shifted back and forth.