JPH01230355A - Dust preventive breathing protector - Google Patents

Abstract

PURPOSE:To widen the visibility of a worker as well as to contrive an improvement in workability by pivotally mounting a face cover onto a helmet, covering the face cover with colored but transparent glare protection lenses at its front and side surfaces, mounting a welding plate in such a way as to be freely opened and/or closed, and thereby connecting an electric fan in order to supply positive pressure inside. CONSTITUTION:During operations under dust environment, for example, TIG welding operations, when a worker puts a helmet 1 on his head with its face cover 2 lowered, with its welding plate 16 closed and with an electric fan 7 driven, compressed air is blown off between the face cover 2 and his face out of the blow-out port 11 of a pipe section 2a via an air hose 5 so that the space can be maintained at normal pressure. The worker therefore will never breath dust at all, he can thereby keep up the work while making sure of section to be welded through the welding plate 16. And when it is required to make sure of the finish of welding with welding works suspended, the finish can be confirmed through a glare protection lens 13 with a window frame 13b opened upward. Since a part of the colored but transparent glare protection lens 13 is exposed on each of the both sides of the face cover 2, the visibility of the worker is widened, workability is thereby improved.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a dust-proof respiratory protector particularly suitable for work requiring both hands, such as TIG welding.

(Prior Art) Dust-proof respiratory protection equipment has been developed to protect workers from harm caused by dust when working in a dusty atmosphere. This dust-proof respiratory protection equipment has a facepiece that is rotatably attached to a helmet, and uses an electric fan to supply positive pressure to the space between the facepiece and the worker's face, preventing dust from entering the space. This prevents workers from inhaling dust.

By the way, when performing work that requires both fs, such as TIG welding, in a dusty atmosphere, the face piece of the above-mentioned dustproof respirator is used with the face piece covered by the welding plate 1.

(Problem to be solved by the invention) However, in conventional dust-proof respirators in which the facepiece is covered with a welding plate, the outside can only be seen through the welding plate. The field of view is narrow, creating a strong sense of pressure on the worker, and in order to directly check the working status with the naked eye, the entire facepiece must be rotated upwards, which may cause a change in the center of gravity of the dust-proof respiratory protector. There was a problem that the workability was significantly hindered.

The present invention has been made in view of the above problem, and its purpose is to widen the field of view of the worker, relieve the feeling of pressure, minimize the change in the center of gravity, and improve the work propensity. The purpose of the present invention is to provide a dust-proof respiratory protective equipment that can protect against dust.

(Means for Solving the Problems) In order to achieve the above object, the present invention pivots a facepiece to a helmet, covers the front and side surfaces of the facepiece with colored transparent light-shielding lenses, and A welding plate 1, which consists of a welding plate that can be opened and closed in front of a light-shielding lens, is removably attached, and an electric fan that supplies positive pressure is connected to the inside of the plate to provide dust-proof ventilation. Constructed protective equipment.

(Function) Since the worker can look around through the light-shielding lenses covered on the sides of the face piece, work efficiency is improved and the feeling of pressure is eliminated. In addition, when checking the work status, all you have to do is open the welding plate of the welding plate halter, which is partially attached to the light-shielding lens, so the center of gravity of the dust-proof respiratory protector will hardly change. This also improves workability.

(Example) An example of the present invention will be described below based on the accompanying drawings.

Fig. 1 is a perspective view of a dustproof respiratory protector according to the present invention;
The figure is a perspective view of the same dust-proof respiratory protector showing a state in which the face piece is opened, and FIG. 3 is a partially cutaway side view of the same dust-proof respiratory protector.

In the figure, reference numeral 1 denotes a working helmet 1-- which is integrally molded from synthetic resin, etc., and the helmet 1-1 includes a face piece 2 or a flaket 3°3 protruding from both sides of its upper end (only one is shown in the figure). It is pivotally held so as to be vertically movable by means of pole members 4, 4 (only one of which is shown) that is inserted through the shaft. The "-" part of this face piece 2 constitutes a vibe part 2a that is shaped like a semicircular arch along the front half of the helmet 1, and one end (the right end in the illustrated example) of the vibe part 2a is closed. The other end (the left end in the illustrated example) is connected to one end of a flexible bellows-shaped air hose 5 with a metal fitting 6.

The other end of the air hose 5 is connected to an electric fan 7 that rotates using a hub as a power source.The electric fan 7 is a compact type that is carried around the waist of the worker, and a filter 8 is mounted on the front of the electric fan 7. installed.

On the other hand, a cushion material 9 made of a soft material such as rubber is attached to the front peripheral edge of the helmet 1, and the cushion material 9 should receive the vibe portion 2a of the face piece 2. As shown in FIG. 3, a stopper 10 is protruded from the back of the vibrator m2a of the face piece 2 to abut against the cushion material 9 to maintain the face piece 2 in the illustrated position. Further, the vibe portion 2a of the face piece 2 is provided with a plurality of blow-off holes 11 that open downward.

By the way, below the vibrator part 2a of the face piece 2, a main body 2b hangs down integrally, and on both sides of the main body 2b there are band-shaped sealing materials 12° 12 (only one of which is shown) made of a soft material such as rubber.
or pinned inward. The front and side surfaces of the main body 2b of the face piece 2 are covered with a green colored transparent light-shielding lens 13, and on the front surface of the light-shielding lens 13 there are welding plates 1 to Holter 14 and screws 15.15 (
(Only one side is shown in the figure).

A rectangular window 14a is opened in this welding plate holder 14, and a rectangular window frame 14b is pivotally connected to the plates 1 to 14 so as to be able to open and close vertically.
A welding plate 16 is fitted into the window frame 14b. Note that the window frame 14b is provided with a handle 14 for opening and closing the window frame 14b.
The window frame 14b is always kept closed by springs 17 and 17 (only one of which is shown).

As described above, welding play 1 to holder J4 are light shielding lens 1.
3, when the welding plate halter 14 is attached, part of the light shielding lens 13 is exposed on both sides of the welding plate halter 14 as shown in the figure.

Therefore, when performing TIG welding work in a dusty atmosphere, for example, the worker must wear the dust-proof respiratory protector, that is, put the helmet l over the head and wear the facepiece 2, which is not shown in Figure 3. If you hold the main body 2b vertically, close the welding plate 1-16, carry the electric fan 7 on your waist, etc., and rotate the electric fan 7, the compressed air will flow through the air hose. 5 to the pipe part 2a of the face piece 2, and the air is emitted from the air outlet 11 opened at the bottom of the pipe part 2a into the space between the face piece 2 and the worker's face, and the space is filled with positive pressure. kept in condition. At this time, the sealing material 12.12 attached to both sides of the main body 2b of the facepiece 2 tightly seals the side surfaces of the worker's face, so air does not leak from both sides of the facepiece 2 and is released into the atmosphere from below. is discharged inside.

As described above, as the space between the facepiece 2 and the worker's face is maintained in a positive pressure state, dust is effectively prevented from entering the space, so the worker can breathe as usual. However, you will not inhale the dust.

During the welding operation, the welding part can be visually checked through the closed welding plate 16 before proceeding with the welding operation.
When interrupting welding work to check the finished condition of the welded part, open the window frame 14b to one side by holding the handle 14c as shown in FIG. Ru.

In addition, the window frame 14b and the welding plate 1 fitted therein
-16 are light, so even when they are opened and closed, there is almost no change in the center of gravity of the dustproof respiratory protector, and the workability is significantly improved compared to the conventional one.

Also, since a portion of the colored transparent light-shielding lenses 13 are exposed on both sides of the face piece 2, the worker can look around the surroundings through the exposed light-shielding lenses 13, thereby widening the worker's field of view. This not only further improves work efficiency, but also eliminates the feeling of pressure on the operator. Furthermore, since harmful light rays can be blocked by the light-shielding lens 13, the eyes of the worker are effectively protected.

(Effects of the Invention) As is clear from the above description, according to the present invention, a facepiece is pivotably attached to a helmet, the front and side surfaces of the facepiece are covered with colored transparent light-shielding lenses, and the light-shielding lens A welding plate holder consisting of a welding plate that can be opened and closed freely is attached to the front of the welding plate, and an electric fan that supplies positive pressure is connected to the inside of the same plane to form a dust-proof respiratory protector. The operator's field of view is widened, which relieves the feeling of pressure and also improves work propensity.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a dustproof respiratory protector according to the present invention;
The figure is a perspective view of the same dust-proof protective equipment showing the state where the facepiece is opened.
FIG. 3 is a partially cutaway side view of the same dust-proof respiratory protector. DESCRIPTION OF SYMBOLS 1... Helmet, 2... Face piece, 7... Electric fan, 13... Shading lens, 14... Welding plate halter 116... Welding plate. Patent applicant Yamaha Auto Body Co., Ltd. Yamaha Motor Co., Ltd. Yamaki Kogaku Co., Ltd.

Claims (1)

[Claims] A facepiece is rotatably attached to a helmet, the front and sides of the facepiece are covered with colored transparent light-shielding lenses, and a welding plate holder is attached and detached, which is a welding plate provided in front of the light-shielding lens so that it can be opened and closed. A dust-proof respiratory protection device that can be freely attached and is configured by connecting an electric fan to the inside of the same plane to supply positive pressure.