JP2021065360A - Face mask for work - Google Patents

Abstract

To provide a face mask for work which is used in painting work or the like, which has a goggle part for protecting eyes of a user, to which a simplified structure is added for suppressing a lens surface of the goggle part from becoming dim, and which can be fitted to a head of a user by a single fitting belt.SOLUTION: A face mask for work comprises: a goggle part 1 having a lens surface 11 on a front surface; and a mask part 2 for covering a nose and a mouth in a tightly closed state, and comprising an air intake part 213 having a filter part 23 check valve for air intake actuation and an exhalation part 214 having a check valve for exhalation actuation, the goggle part and mask part being integrated. The face mask for work further has a ventilation part 215 which is formed of a check valve for blocking a ventilation direction to the goggle part, the ventilation part being provided between the goggle part 1 and the mask part 2. A mask part fitting belt 3 and a goggle part fitting belt 32 whose base ends are coupled to the goggle part and the mask part, respectively, are formed into a single component, the goggle part and the mask part are maintained in the tightly closed state and are fitted to a face, in a head fitting part 3.SELECTED DRAWING: Figure 1

Description

The present invention relates to a work face mask used during painting work and the like.

The face mask that prevents the suction of dust during work and protects the eyes has a transparent front surface (lens surface) that does not obstruct the vision, and it is necessary to pass through a filter part for removing dust when inhaling during breathing. It is what you are doing. Further, since the work is hindered when the lens surface becomes fogged, these face masks are provided with an anti-fog mechanism (Patent Documents 1 and 2).

For example, a face mask in which a goggle portion and a mask portion are combined (Patent Document 1), or a face mask in which a mask portion for breathing is provided inside a transparent face protection portion (= goggles portion) that covers the entire face (Patent Document 2). In, the intake air during breathing passes through the goggles portion, and fresh outside air is always introduced into the goggles portion to prevent fogging of the lens surface.

That is, the inspiration during breathing passes through the attached or attached filter portion and enters the goggles portion, enters the mask portion from the goggles portion via the check valve, and becomes the intake air of the mask wearer there. The exhaled air is directly discharged from the mask portion through the check valve to the outside air.

Further, the above face mask needs to cover the face widely and adhere to the face, and the face mask disclosed in Patent Document 1 is provided with two upper and lower wearing belts for wearing the goggles portion and the mask portion. The face mask disclosed in Patent Document 2 also has two upper and lower mounting belts.

Japanese Unexamined Patent Publication No. 59-156356. Japanese Unexamined Patent Publication No. 2007-20675.

Since the above-mentioned conventional face mask has a configuration in which the intake air during breathing once passes through the goggles portion, a dustproof filter portion is attached to the goggles portion like the work face mask shown in Patent Document 1. In the face mask, it is necessary to separately provide a filter part at a position behind the head and connect it to the goggles part with a ventilation pipe, and the filter part becomes an obstacle for the operator when wearing the mask or when working.

Further, in a face mask in which a filter portion is attached to a face protection portion (= goggles portion) that covers the entire face like the work face mask shown in Patent Document 2, the entire mask has a multiple structure and the entire mask is bulky. It ends up.

As a means for solving the above-mentioned problems, the mask portion is first provided with an intake portion including a filter portion provided with a check valve for inspiratory operation and an exhalation portion provided with a check valve for exhalation operation, and the goggles portion and the mask portion are provided. We have proposed a work face mask with an anti-fog function by providing a ventilation section consisting of a check valve that blocks the ventilation direction to the goggles section (Japanese Patent Application No. 2019-909858).

Further, in the work face mask in which the goggles portion and the mask portion are combined, the contact surface portion with the face in the goggles portion and the mouth circumference contact portion on the back surface of the mask portion have flexibility because they are brought into close contact with the face. , Equipped with two upper and lower mounting belts, I feel inconvenience in the operability of putting on and taking off the face mask.

Therefore, the present invention has proposed a work face mask having a simple structure, having an anti-fog function, and having excellent attachment / detachment operability.

The working face mask according to claim 1 of the present invention covers the goggle portion, which has a lens surface on the front surface and is worn on the face in a sealed state, and the nose and mouth portions in a sealed state, and also covers the filter portion for intake operation. An intake part equipped with a check valve and a mask part provided with an exhalation part equipped with a check valve for exhalation operation are integrally formed, and a goggle part and a mask part that form a closed space when worn on the face, respectively. A ventilation part consisting of a check valve for blocking the ventilation direction to the goggles part is provided between the two parts, and one mask part mounting belt and one goggle part mounting belt in which the base ends are connected to each of the goggles part and the mask part. It is characterized in that a head-mounted portion is provided so that the goggles portion and the mask portion can be worn on the face while maintaining a sealed state.

Therefore, this mask is used for work in a dust environment such as painting work, and by attaching it to the worker's head with a single head mounting part, the worker's face becomes a goggle part. And the mask part will be covered in a sealed state. Therefore, the operator's breathing is performed through the intake portion and the exhalation portion provided in the mask portion, the suction of dust is blocked by the filter portion, and the eyes are protected by the goggles portion.

In particular, the lens surface of the goggles portion is protected from fogging by ventilation of the ventilation portion. The inside of the mask and the goggles basically match the atmospheric pressure, but the pressure inside the mask fluctuates slightly due to breathing. That is, the pressure in the mask portion decreases in inspiration, and the pressure in the mask portion increases in exhalation. Therefore, as the outside air enters the mask due to the inspiration, the pressure inside the mask decreases and the ventilation part opens, and the pressure of the mask part increases due to the exhalation with high humidity and the ventilation part closes. Then, the air inside the goggles is slightly replaced. Fogging of the lens surface is prevented by changing the air in the goggles little by little.

Further, the working face mask according to claim 2 of the present invention has a goggle portion that covers the upper part of the face and a triangular mask portion, in which the mask portion has a triangular shape in the central lower portion of the goggle portion. The apex part is connected in a state of being intruded, and a ventilation part is provided in the invading part. The whole is compact, and the formation position of the ventilation part is also in the center of the goggle part, so that the ventilation inside the goggles part is efficiently performed. It is said.

Further, in the working face mask according to claim 3 of the present invention, in particular, the tip of the mask portion mounting belt whose base end is connected to the mask portion is connected to the base end of the goggles mounting belt by urging the mask portion toward the face side. Since the mask part is urged, the goggles part is slightly bent toward the back side or has the effect of resisting forward protrusion compared to the face wearing state. Occasionally, as the goggle portion comes into close contact with the face, the mask portion also comes into close contact with the face, and the work face mask can be worn only with the goggle wearing belt.

The working face mask according to claims 4 and 5 of the present invention is a single-lens type in which the goggles portion is formed on one lens surface, and is an eyeglass type in which the goggles portion is formed on two lens surfaces. Is applied regardless of the mode of the goggles portion.

Further, the working face mask according to claim 6 of the present invention is provided with a plurality of ventilation portions between the space inside the mask portion and the space inside the goggles portion, and the antifogging function of the lens surface due to the ventilation of the ventilation portion is provided. It is done more effectively.

Further, since the work face mask according to claim 7 of the present invention is provided with an intake portion on the front surface of the mask portion and an exhalation portion below the intake portion, the ventilation inlet / outlet portions are arranged side by side above and below the mask. The ventilation into the goggles in the ventilation part flows smoothly.

The configuration of the present invention is as described above, and the work face mask provided with the goggles portion having an antifogging function can be miniaturized, and can be attached to the face with a single head attachment portion. The attachment / detachment operability is also good.

Explanatory drawing of embodiment of this invention (front view of use state). The figure (rear view). Explanatory drawing of the air circulation. Enlarged perspective view of the same main part. A front view of another example of the goggles. Another example of the same head mounting part.

Next, an embodiment of the present invention will be described. The working face mask shown in the embodiment is composed of a goggle portion 1, a mask portion 2, and a head mounting portion 3.

The goggle portion 1 has a shape that covers the upper portion of the face A, has a lens surface 11 on the front surface, and the lens surface 11 is held by the lens frame portion 12 and is a contact surface portion on the side of the lens frame portion 12 that is in close contact with the face. Reference numeral 13 is appropriately formed of a cushioning material. Further, belt connecting portions 14 are provided at both ends of the lens frame portion 12.

The mask portion 2 includes a front triangular covering portion 21 that covers the nose and mouth in a sealed state, a holding portion 22 of the covering portion 21, and a filter portion 23 that is attached to the outside of the covering portion.

The covering portion 21 is made of a rubber material, and the peripheral back surface portion 211 is folded inward to ensure flexibility and to be in close contact with the face. Further, when the triangular top portion 212 of the covering portion 21 is connected in a state of being intruded into the central lower portion of the goggles portion 1 and integrated with the goggles portion 1, the goggles portion 1 and the mask portion 2 are attached to the face. In addition, the goggles portion 1 and the mask portion 2 are formed so as to be in a sealed state.

Further, the covering portion 21 is provided with an intake portion 213, an exhaling portion 214, and a ventilation portion 215. The intake portion 213 is in front of the covering portion 21, the exhaling portion 214 is below the intake portion 213, and the ventilation portion 215 is a triangular top portion. It is provided in 212.

The intake portion 213 is formed of a check valve that allows passage from the outside air to the covering portion 21 and blocks the passage from the covering portion 21 to the outside air. The expiratory portion 214 is formed of a check valve that allows the passage from the inside of the covering portion 21 to the outside air and blocks the passage from the outside air into the covering portion 21.

The ventilation portion 215 is provided on the triangular top portion 212 that protrudes and penetrates into the goggles portion 1, and is a check valve that shuts off and passes the ventilation between the goggles portion 1 and the covering portion 21. It closes when the air pressure is higher than that in the goggles portion 1, and opens when the air pressure inside the covering portion 21 is lower than that in the goggles portion 1.

Further, a holding portion 22 for holding the covering portion 21 is attached to the center of the exposed portion of the covering portion 21, belt mounting portions 221 are provided on the left and right ends of the holding portion 22, and a mask portion mounting belt constituting the head mounting portion 3 is provided. 31 are connected.

Further, a filter portion 23 for preventing dust from entering the covering portion 21 of outside air dust is provided at an outer position of the intake portion 213 of the covering portion 21.

The head mounting portion 3 includes a mask portion mounting belt 31 and a goggle mounting belt 32, and the mask mounting belt 31 is connected at both ends to the belt connecting portion 14 of the goggles portion 1 and the belt mounting portion 221 of the mask portion 2 with a rubber band. , The mask portion 2 is urged toward the goggles side, and the mask portion 2 is slightly bent toward the back surface side with respect to the goggles portion 1 from the face-mounted state, or has an action of resisting forward protrusion. There is.

Further, the goggle wearing belt 32 is provided with an appropriate connecting member for connecting the base end to the belt connecting portion 14 of the goggles portion 1 and connecting the belts to each other on the other end side.

Therefore, this mask is used for work in a dusty environment such as painting work, and the face A is covered with the integrated goggles portion 1 and mask portion 2, and the goggles wearing belt 32 is fastened to tighten the goggles portion. 1 and the mask portion 2 are put in close contact with each other on the face.

In particular, since the mask portion 2 is urged toward the back side by the mask mounting belt 31 (the goggles portion is slightly bent toward the back side or a resistance force acts against the forward protruding direction), the goggles portion 1 is applied to the face. When it is brought into close contact with A, the mask portion 2 also naturally comes into close contact with the face. Therefore, by attaching the mask to the head with the goggle wearing belt 32, the goggles portion 1 and the mask portion 2 are closely attached to the face.

When the mask is attached to the face A, the operator's breathing is such that the outside air passes through the filter section 23, enters the covering section 21 from the intake section 213, and is released from the exhalation section 214. Sometimes the filter blocks the dust and the goggles 1 protect the eyes.

In particular, anti-fog on the lens surface 11 of the goggles portion 1 is realized by ventilation in the ventilation portion 215 due to a pressure change in the coating portion 21 during respiration.

At the time of inspiration, the pressure inside the covering portion 21 decreases, and at the time of exhalation, the pressure inside the covering portion 21 increases. Therefore, the ventilation portion 215 opens at the time of inspiration and closes at the time of exhalation. The ventilation portion 215 opens in a short time at the time of intake, and the air in the goggles portion 1 is slightly replaced with the outside air that has passed through the intake portion 213. That is, the air in the goggles is gradually replaced with the outside air from which dust has been removed each time breathing, the humidity in the goggles portion 1 is prevented from increasing, and the lens surface 11 is not fogged.

Further, the present invention is not limited to the above-described embodiment, and can be applied to a working face mask that employs eyeglass-type goggles 1a in which lens surfaces 11a are arranged in parallel as shown in FIG.

Further, regardless of which of the single-lens type goggles portion 1 and the eyeglass-type goggles portion 1a is adopted, a plurality of ventilation portions 215 may be provided so as to be arranged in a row.

Further, as shown in FIG. 6, the mask portion mounting belt 31a is not directly connected to the belt connecting portion 14 of the goggles portion 1, but is sutured and connected to the goggles mounting belt 32 to adopt a Y-shaped mounting belt. Is also good.

As described above, the present invention provides a simple and compact work mask composed of goggles portions 1, 1a and a mask portion 2 with an antifogging function with a simple structure and enhances ease of wearing. Is.

1,1a Goggles part 11, 11a Lens surface 12 Lens frame part 13 Contact surface part 14 Belt connection part 2 Mask part 21 Covering part 211 Peripheral back part 212 Triangular top part 213 Intake part 214 Exhalation part 215 Ventilation part 22 Holding part 221 Belt mounting Part 23 Filter part 3 Head mounting part 31, 31a Mask part mounting belt 32, 32a Goggles mounting belt

Claims (7)

A goggle part that has a lens surface on the front and is attached to the face in a sealed state,
The nose and mouth are covered in a sealed state, and a filter part for inspiratory operation, an intake part equipped with a check valve, and a mask part provided with an exhalation part equipped with a check valve for exhalation operation are integrally formed. With
A ventilation part consisting of a check valve that blocks the ventilation direction to the goggles part is provided between the goggle part and the mask part, which are sealed spaces when worn on the face.
The mask part wearing belt and the goggle wearing belt in which the base ends are connected to each of the goggles part and the mask part are unified, and the head wearing part that can be worn on the face while the goggles part and the mask part are kept sealed is provided. A work face mask that is characterized by being attached. A request for connecting a goggle portion that covers the upper part of the face and a triangular mask portion with the triangular apex portion of the mask portion intruding into the lower center portion of the goggle portion, and providing a ventilation portion in the invading portion. Item 1. The work face mask according to item 1. The work face mask according to claim 2, wherein the tip of the mask portion mounting belt having the base end connected to the mask portion is connected to the base end of the goggle wearing belt by urging the mask portion toward the face side. The work face mask according to claim 2 or 3, which is a single-lens type in which the goggles portion is formed by one lens surface. The work face mask according to claim 2 or 3, wherein the goggles portion is a spectacle type formed by two lens surfaces. The work face mask according to any one of claims 1 to 5, wherein a plurality of ventilation portions are provided between the space inside the mask portion and the space inside the goggles portion. The working face mask according to any one of claims 1 to 6, wherein an intake portion is provided on the front surface of the mask portion and an exhalation portion is provided below the intake portion.

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