JP2957998B2 - Dust mask - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust mask for a human face for protection against allergens such as natural dust or industrial dust, or pollen, mites and microorganisms.

[0002]

2. Description of the Related Art Various types of dust or pollen, mites, microorganisms and other excrement-containing air are inhaled to cause pneumoconiosis,
There is onset such as hay fever or various allergies. Conventionally, various types of dust masks are commercially available to prevent the onset of the disease.

[0003]

However, conventional dust masks of the ear-hook type that cover a part of the mouth and nose of the wearer are relatively different from the simplest gauze mask types. Until a high-end model with various filters of high performance, a product that simultaneously has all three conditions of high dust collection performance when worn, low respiratory resistance and wearing comfort at the same time is practical. Was nothing.

SUMMARY OF THE INVENTION The object of the present invention has been made in view of the above circumstances, and is intended to restrict a breathing method when a user wears it and to allow all of the intake air from outside air to pass through a filter. Another object of the present invention is to provide a dust mask that satisfies all three conditions at a reasonable cost.

[0005]

The present invention achieves the above object by providing a dust mask described below.

According to a first aspect of the present invention, there is provided a dust mask having a bag-shaped filter (5) which is disposed inside a mask cover (1) and has a suction hole (5a) at a position corresponding to a human mouth. And a partition plate (3) having a ventilation hole (3a) facing the suction hole (5a) and arranged inside the filter unit (2). The user wears the dust mask and sets the breathing method to inhale the outside air from the mouth and to discharge the inside air from the nostrils, so that only the clean outside air that has passed through the filter (5) can be taken in.

According to a second aspect of the present invention, there is provided a dust mask provided at the position of the ventilation hole (3a) of the partition plate (3) in accordance with the first aspect of the invention. ) Is configured by adding a flap-shaped check suction valve (9) for opening the valve. The user wears a dust-proof mask and breathes outside air from the mouth and discharges inside air from the nostrils, so that only the clean outside air that has passed through the filter (5) can be taken in. At this time, the check suction valve (9) opens the ventilation hole (3a) only in response to the intake of outside air from the mouth, and prevents exhaust from the mouth. Thereby, the inhalation of the outside air from the wearer's mouth is properly regulated.

According to a third aspect of the present invention, there is provided a dustproof mask according to the second aspect, wherein the dustproof mask is provided at a position corresponding to a person's nose and has a flap-like shape capable of exhausting air from the nostrils only in response to discharge of inside air from the nostrils. It is configured by adding a discharge valve (11) . The user wears a dust-proof mask and breathes outside air from the mouth and discharges inside air from the nostrils, so that only the clean outside air that has passed through the filter (5) can be taken in. At this time, the discharge valve (11) enables exhaust from the nostrils only in response to the discharge of inside air from the nostrils, and blocks inhalation from the nostrils. As a result, exhaust from the user's nostrils is properly regulated.

The filter unit (2) of the present invention has a spacer (6) inside the bag-shaped filter (5). The spacer (6) has air permeability, forms a space inside the bag-shaped filter (5), and ensures air intake throughout the filter (5).

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a dust mask according to the present invention will be described in detail based on preferred embodiments with reference to the drawings.

FIG. 1 is a rear view of the dust mask of the embodiment of the present invention as viewed from the inside, that is, from the face side of the user. FIG.
FIG. 2 is a cross-sectional view taken along a line AA in FIG. 1. FIG.
FIG. 2 is a cross-sectional view taken along line BB in FIG. 1. FIG. 4 is an exploded perspective view of a main part of the dust mask of the present invention.

1, 2, 3 and 4, the dust mask of the present invention comprises a mask cover 1, a filter unit 2 and a partition plate 3 from the outer surface (outside air side) to the inner surface of the dust mask.

The mask cover 1 is made of, for example, a thin, antistatic polyester cloth having a water-repellent property and a high airtightness for preventing dust from adhering. By performing the temporary joining, the area and the shape size are adapted to the mouth and nose area of the person (user). The left and right ear laces 4 are passed through lace through holes formed by folding the left and right ends of the mask cover 1, and the occlusal tape 4 fixed to both ends of the ear lace 4.
a The loop length can be adjusted by using, for example, a registered trademark "Magic Tape".

In order to easily adjust the size change of the mask cover 1 by increasing or decreasing the amount of folding, standard alignment marks of respective sizes (not shown) are appropriately formed on the back surface of the mask cover 1 as necessary. Is filled in.

The filter unit 2 is temporarily connected to the inner surface of the mask cover 1 so as to be detachable from the inner surface of the mask cover 1 by an adhesive cloth or an occlusal tape (not shown).

The filter unit 2 incorporates, as a main filter element, a filter 5 made of non-woven polypropylene (electret) non-woven fabric charged with electrostatic charge for collecting dust. The filter 5 has an extremely high trapping effect, and has a high ventilation resistance per unit area. Therefore, the filter 5 is formed in a flat bag shape to reduce the overall ventilation resistance.
And form an air intake surface with a large surface area. The opening of the bag-shaped filter 5 is a suction hole 5a, and is formed on the inner surface of the filter unit 2 at a central position corresponding to the mouth of the user.

Usually, at least the inside, that is, the inner surface of the bag-shaped filter 5 and, if necessary, the outer surface of the filter 5, are formed in order to form a space in which air can freely move on both surfaces of the filter 5. , A polyester cotton, a sponge, a net laminate, or a woven or nonwoven fabric spacer 6 is attached. The spacer 6 may be formed of a material containing a deodorant, a fragrance, an adsorbent, or the like, depending on the use of the dust mask. Of course, if the bag-shaped filter 5 forms a space inside with its own rigidity, the spacer 6 is unnecessary. The filter 5 and the spacer 6 are wrapped with a filter unit cover 7 made of a highly air-permeable sheet such as a nonwoven nylon fabric or an antibacterial chitin / chitosan sheet, if necessary.

The partition plate 3 is made of a thin and soft water-resistant sheet such as PET (polyethylene terephthalate), PE (polyethylene), PVC (vinyl chloride resin), PS (polystyrene), biodegradable plastic, paper, or the like. Composed of 1 or 2 at the center
It has the above-mentioned ventilation holes 3a, and is fixed around the suction holes 5a of the bag-shaped filter 5 at the peripheral portion of these ventilation holes 3a. As a result, the inside of the bag-shaped filter 5 is
Through a, it communicates with the ventilation hole 3a of the partition plate 3.

Further, a rectangular check suction valve cover 8 is provided in the area of the ventilation hole 3a as required. The check suction valve cover 8 is usually made of the same material as the partition plate 3, has a plurality of small holes 8a, and is fixed to the inner surface of the partition plate 3 by a fixing portion 8b projecting upward. In this mounting state, the check suction valve cover 8
The contact piece 8c, which is bent at a right angle at the upper side, contacts the surface of the partition plate 3, so that the check suction valve cover 8 and the partition plate 3 form a space between them. This space incorporates a flap-shaped check suction valve 9 and allows movement of the check suction valve 9.

The flap-shaped check suction valve 9 is provided in the space between the partition plate 3 and the check suction valve cover 8 in the form of the vent hole 3.
a, the air hole 3a is opened only in response to outside air inhalation from a person's mouth, and has the same shape as the check suction valve cover 8 and an extremely thin flexible resin sheet. It consists of. Since the check suction valve 9 is fixed to the upper part of the ventilation hole 3a of the partition plate 3 by adhesive at the upper edge, the ventilation hole 3a is formed in the space between the check suction valve cover 8 and the partition plate 3. It is always closed, but separates from the vent 3a in response to the inhalation of outside air from the mouth of the person,
To the open state.

A plate cover 10 is detachably attached to the inner surface of the partition plate 3 in order to improve the feeling of contact with the skin at the mouth and mouth. This plate cover 10 does not impair the adhesion between the mouth and the partition plate 3,
It is made of an extremely thin gauze-like cloth that is hygroscopic and air-permeable, and has a pair of left and right cuts 10a in the vertical direction.
The pair of cuts 10a are provided so as to form a free flap portion 10b at a position corresponding to the check suction valve cover 8 so that the position of the check suction valve cover 8 can be confirmed at the mouth. The plate cover 10 can be reused by removing and cleaning it when it becomes dirty.

Further, if necessary, a discharge valve 11 made of a flexible resin sheet is provided inside the mask cover 1 at a position corresponding to the nose of a person. The discharge valve 11 is detachably fixed to the inner surface of the mask cover 1 at the upper edge of the discharge valve 11 by means of an occlusal tape or the like, and enables exhaust from the nostrils according to discharge of inside air from the nostrils. When inhaling through the nostrils, close the nostrils and inhibit inhaling through the nostrils.

The specific examples described above are examples of the standard according to the present invention. Each of the constituent elements may be changed in its material, combination structure, etc. within the scope of the present invention without changing the gist of the present invention. Of course, there is no harm in doing so.

Further, the filter unit 2 may have a plurality of unit configurations depending on the application, or a bellows-shaped fold may be formed on the filter 5, or the filter 5 may be provided with irregularities to increase the surface area. Special functions can also be added by impregnating the antibacterial, deodorant, and antiallergic agents into the spacers and spacers 6.

The user wears the mask cover 1 on the face using a pair of left and right ear straps 4 so as to cover the mouth and nose area with the mask cover 1, and puts the mask cover 1 in the suction hole 5 a of the filter unit 2. A breathing method is adopted in which the mouth is directed toward, the outside air is inhaled from the mouth, and the inside air is discharged from the nose. At this time, the outside air passes through the inside of the filter 5 from the outside of the filter 5, enters the inside thereof, and reaches the user's mouth via the suction hole 5a and the ventilation hole 3a. By the method of breathing, the high collecting function of the filter 5 allows the purified outside air to be sucked in from the mouth and the inside air to be discharged from the nose, so that the filtration efficiency is extremely high, and the sneezing caused by pollen and the stimulus of cold outside air Symptoms such as runny nose and nasal congestion disappear.

Due to the high collecting function of the filter 5, the airflow resistance per unit area of the filter 5 is high. However, the filter 5 is bag-shaped and forms an air intake surface with a large surface area. For this reason, the overall ventilation resistance is low. Thus, despite the limited mouth area of the face, a high dust collection effect can be obtained with low airflow resistance. At the same time, due to the presence of this low moderate ventilation resistance, the intimate contact between the mouth of a person, that is, the mouth of the user and the surface of the partition plate 3 during inhalation is ensured. As described above, since the mouth of the user comes into close contact with the outer peripheral portion of the ventilation hole 3a of the partition plate 3, if the user opens the mouth for inhalation, the inside of the mouth becomes the ventilation hole 3a.
a, it communicates only with the internal space of the filter 5 via the suction hole 5a. As a result, only the clean air that has passed through the filter 5 is inhaled from the mouth of the user .

A gas-permeable spacer 6 is inserted into at least the inside of the bag-shaped filter 5, and the inner surface of the bag-shaped filter 5 does not adhere to the inner surface of the bag-shaped filter 5 due to a negative pressure. . If the spacer 6 is provided on the outer surface of the filter 5, the outside air can be taken in from the front surface of the filter 5 even if the mask cover 1 does not have air permeability.

When the user performs the above-mentioned breathing method, the check suction valve 9 is provided only when the outside air is inhaled from the mouth.
a is opened to prevent exhaust from the mouth. Thereby, the inhalation of the outside air from the wearer's mouth is properly regulated.
Further, by checking the movement of the check suction valve 9, the adhesion between the mouth and the surface of the partition plate 3 during suction can be easily determined.

The discharge valve 11 enables exhaust from the nostrils only in response to the discharge of inside air from the nostrils, and prevents inhalation from the nostrils. Thereby, the exhaust from the nostrils of the wearer is properly regulated. Therefore, it is possible to very easily shift from the normal natural breathing method centering on the nose to the designated breathing method.

The presence of the plate cover 10 provides a comfortable wearing feeling, does not cause stuffiness, and makes it easy to wear the dustproof mask. Further, if necessary, the plate cover 10 can be easily cleaned, so that it can be kept clean for a long time.

Further, in this embodiment, the mask cover 1 is folded back and temporarily joined, so that a person (user)
And the size of the mouth and nose region, and the left and right ear straps 4 are adjustable in loop length. As a result, it is possible to use it in an appropriate form according to the application.

[0032]

As described above, according to the present invention, a filter is provided by wearing a dust mask and setting the wearer's breathing method to breathe outside air from the mouth and discharge inside air from the nostrils. Only the clean outside air that has passed can be taken in. Thereby, an extremely high dust collection efficiency can be obtained. In addition, the large air intake area of the bag-shaped filter reduces the ventilation resistance.

The presence of the check suction valve properly regulates the outside air suction from the wearer's mouth. In addition, exhaust from the nostril is regulated by the discharge valve. Therefore, the breathing method of the wearer is properly regulated.

Furthermore, if the spacer is inserted into the inside of the bag-shaped filter, a space is formed in the filter even if the filter material is not rigid, so that the ventilation resistance of the filter is stable for a long time. .

[Brief description of the drawings]

FIG. 1 is a rear view of a dust mask of the present invention.

FIG. 2 is a cross-sectional view taken along a line AA in FIG.

FIG. 3 is a cross-sectional view taken along a line BB in FIG.

FIG. 4 is an exploded perspective view of a main part of the dust mask of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mask cover 2 Filter unit 3 Partition plate 3a Vent hole 4 Ear string 4a Occlusal tape 5 Filter 5a Suction hole 6 Spacer 7 Filter unit cover 8 Check suction valve cover 8a Hole 8b Fixing part 8c Contact piece 9 Check suction Valve 10 Plate cover 10a Cut 10b Free flap 11 Discharge valve

Claims (4)

(57) [Claims] A cloth mask cover (1) and a mask cover (1)
A filter unit (2) having a flat bag-shaped filter (5) inside the bar (1) and having a suction hole (5a) at a position corresponding to a human mouth and forming a space inside ; ,
Vent hole (3a) facing the mouth of a person communicating with the suction hole (5a)
Having a softness disposed inside the filter unit (2).
And a partition plate (3), and the user's mouth is brought into close contact with the partition plate (3) when worn.
And the inside of the user's mouth is vented (3a) and inhaled.
The hole (5a) allows the internal space of the bag-shaped filter (5) to be
A dust mask characterized by being in a state of being able to penetrate, and further restricting a breathing method when worn by a user in this state such that outside air is inhaled from a mouth and inside air is discharged from a nostril. 2. A mask cover made of cloth and a mask cover.
A filter unit (2) having a flat bag-shaped filter (5) inside the bar (1) and having a suction hole (5a) at a position corresponding to a human mouth and forming a space inside ; ,
Vent hole (3a) facing the mouth of a person communicating with the suction hole (5a)
Having a softness disposed inside the filter unit (2).
A paddle partition plate (3), the flap-like check suction valve to outside air open the vent (3a) only when inhalation from provided mouth position of the ventilation hole (3a) of the partition plate (3) (9), and the user's mouth is brought into close contact with the partition plate (3) when worn.
And the inside of the user's mouth is vented (3a) and inhaled.
The hole (5a) allows the internal space of the bag-shaped filter (5) to be
A dust mask, wherein the dust mask is controlled so as to allow the user to breathe in the outside air from the mouth and to discharge the inside air from the nostrils when the user wears it in this state . 3. A mask cover made of cloth, and a mask cover.
A filter unit (2) having a flat bag-shaped filter (5) inside the bar (1) and having a suction hole (5a) at a position corresponding to a human mouth and forming a space inside ; ,
Vent hole (3a) facing the mouth of a person communicating with the suction hole (5a)
Having a softness disposed inside the filter unit (2).
A paddle partition plate (3), the flap-like check suction valve to outside air open the vent (3a) only when inhalation from provided mouth position of the ventilation hole (3a) of the partition plate (3) (9) and a flap-shaped discharge valve (11) provided at a position corresponding to a person's nose and capable of exhausting air from the nostril only in response to the discharge of inside air from the nostril , used when worn. The mouth of the person to the partition plate (3)
And the inside of the user's mouth is vented (3a) and inhaled.
The hole (5a) allows the internal space of the bag-shaped filter (5) to be
A dust mask, wherein the dust mask is controlled so as to allow the user to breathe in the outside air from the mouth and to discharge the inside air from the nostrils when the user wears it in this state . 4. The filter unit (2) according to claim 1, wherein a filter unit (2) is formed by inserting a permeable spacer (6) inside the bag-shaped filter (5). The dust mask according to any of the above.