JP3955905B2 - Simple mask - Google Patents

Description

  The present invention relates to a simple mask suitable for use as a disposable mask, and more particularly to a simple mask with a nose clip having a large filtration area.

  Japanese Unexamined Patent Publication No. 2002-325855 (Patent Document 1) discloses a mask having a nose clip. In this mask, the nose clip can be attached to and detached from the upper side portion of the filter portion covering the mouthpiece and the nostril.

A simple dust mask with a nose clip made of a flexible metal strip is well known.
JP 2002-325855 A

  In the mask described in Patent Document 1 and the known simple dust mask, by using a nose clip, a part of the breathable portion that acts as a filter portion is in close contact with the nose portion and its periphery, and is substantially non-ventilated. Sometimes it becomes sex. Further, when the breathable portion is extremely close to the nostril and mouthpiece, the substantial effective filtration area of the filter portion may be reduced. For these reasons, these masks may be difficult to breathe even if the apparent filtration area is large.

  An object of the present invention is to improve a mask with a nose clip so that the effective filtration area of the filter portion is not reduced by using the nose clip.

Means for Solving the Problems and Effects of the Invention

  In order to solve the above-mentioned problems, the present invention is directed to a covering portion that can cover the nostril and mouth of a mask wearer, and the head and ears of the wearer attached to the covering portion. And a strap part that can be hung around any one of the above, and a nose clip that can be deformed so as to bring the covering part into close contact with both sides of the nose muscles.

In such a simple mask, the present invention is characterized as follows. The covering portion has a breathable filter portion and an overhanging portion that can be in close contact with the face, and the filter portion is formed symmetrically with respect to a horizontal center line that bisects the mask in the longitudinal direction. A heel that is formed by overlapping and joining the substantially semicircular peripheral portions of the portion and the lower filter portion, and is convex toward the front of the wearer's face in the wearing state of the simple mask. it is possible to coloration shape, from said filter unit side edges portion positioned lower edge portion and side located upper edge portion and a lower located above the face when presenting the bowl-shaped has a peripheral portion Do that, the projecting portion is being formed by a sheet-like material protruding toward from said peripheral portion of said filter portion radially inwardly of the bowl-shaped, the lower and the upper filter portion The filter portion is formed with a portion projecting along the lateral center line at the side edge portions, and the projecting portion forms a tubular portion for inserting the strap portion. It is bent to the front side and joined to the front side, and the nose clip is attached to the overhanging portion at the upper edge portion.

In the simple mask configured in this way, since the nose clip is attached to the sheet-like material that protrudes inside the filter part at the upper edge part of the filter part, when the nose clip is used, the breathable filter part There or in close contact with the nose and around, there is no fact or extremely close to the mouth and nostrils. In such a simple mask, the effective filtration area in the filter portion is not reduced by the use of the nose clip.

  In one embodiment of the present invention, a chin clip that can be deformed so as to bring the protruding portion into close contact with the wearer's jaw is attached to the protruding portion of the lower edge portion.

  In the simple mask configured as described above, the lower edge portion can be securely adhered to the jaw.

  In another embodiment of the present invention, in the sheet-like material forming the overhanging portion, at least a part of the breathable sheet forming the filter portion is radially inward of the bowl shape. Wrapped.

  In the simple mask formed in this way, the overhanging portion can be obtained by folding back the air-permeable sheet forming the filter portion, so that the manufacture of the simple mask is simplified.

  The details of the simple mask according to the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a diagram showing a front portion of a simple mask 1 in use. The simple mask 1 has a covering portion 2 and a strap portion 3. The covering portion 2 has a substantially bowl shape in use, covers the nostrils 6 and the mouthpiece 7 of the simple mask wearer 4, and protrudes toward the front of the face of the wearer 4, and a breathable filter portion 2 a And an overhang portion 2b (see FIG. 2) located inside the filter portion 2a. The strap 3 is hung around the head 8 so that the covering 2 can be brought into close contact with the face of the wearer 4. The covering portion 2 is divided into an upper portion 11 and a lower portion 12 in the longitudinal direction, and these portions 11 and 12 are integrated at a joint portion 13 extending in the lateral direction in the drawing.

  FIG. 2 is a diagram illustrating a section taken along the line II-II in FIG. 1, but the wearer 4 is indicated by a virtual line. The upper portion 11 and the lower portion 12 in the covering portion 2 include a breathable outer covering sheet 16, a breathable inner covering sheet 17, and a sheet-like filter medium 18 interposed between the two sheets 16 and 17. Have. Both sheets 16 and 17 extend from the edge of the filter medium 18 and overlap each other, and are integrated by joining means such as welding, adhesion, and stitching, and the peripheral portions 21a, 21b, 22a, and 22b of the upper portion 11 and the lower portion 12, respectively. Is forming. In the joining part 13, these peripheral parts 21a and 22a overlap and are integrated by joining means such as welding, adhesion, and stitching.

  In FIG. 2, the upper portion 11 includes an upper filter portion 23 extending upward from the joining portion 13, an outer covering sheet 16, an inner covering sheet 17, and a filter medium 18 from the edge of the upper filter portion 23 (see FIG. 3). It has an upward projecting portion 24 that is folded inward in the radial direction of the filter portion 2a having a shape and is in close contact with the face. In the upward projecting portion 24, a nose clip 26 is located between the outer covering sheet 16 and the filter medium 18, and the nose clip 26 is preferably attached to the outer covering sheet 16 by adhesion or welding. A gap 25 is formed between the upper filter portion 23 and the upper projecting portion 24 so as to communicate with the inside of the covering portion 2. The lower portion 12 includes a lower filter portion 27 extending downward from the joining portion 13, an outer covering sheet 16, an inner covering sheet 17, and a filter medium 18 from the edge of the lower filter portion 27 (see FIG. 3). And a downward projecting portion 28 that is folded back inward. In the downward projecting portion 28, a chin clip 29 is located between the outer covering sheet 16 and the filter medium 18, and the chin clip 29 is preferably attached to the outer covering sheet 16 by adhesion or welding. A gap 30 is formed between the lower filter portion 27 and the lower protruding portion 28 so as to communicate with the inside of the covering portion 2. The upper filter part 23 and the lower filter part 27 are integrally formed to form the filter part 2a, and the upper projecting part 24 and the lower projecting part 28 are integrally formed to form the projecting part 2b. (See FIG. 3). In the illustrated example, the nose clip 26 and the chin clip 29 positioned between the outer covering sheet 16 and the filter medium 18 may be positioned between the inner covering sheet 17 and the filter medium 18, It may be located on the inner surface 17a of the inner covering sheet 17 forming the inner surface of the simple mask 1.

  For the outer covering sheet 16 and the inner covering sheet 17, a conventional sheet-like material such as a non-woven fabric having air permeability, a woven fabric, or a net-like molded product of a thermoplastic plastic is used. For the filter medium 18, a conventional sheet-like material such as a nonwoven fabric, a woven fabric, or a cotton-like fiber lump is used. For the nose clip 26 and the chin clip 29, strips made of a material such as aluminum, brass, plastic, or the like, which can be plastically deformed with a fingertip, are used. The nose clip 26 and the chin clip 29 are easily plastically deformed so as to follow the undulations of the face when the upper projecting portion 24 and the lower projecting portion 28 are pressed with the fingertips so as to be in close contact with the face of the wearer 4. Thus, the two protruding portions 24 and 28 act to enhance the adhesion to the face. The strap part 3 is formed of a rubber string extending in an annular shape.

  FIG. 3 is a diagram showing the rear portion of the simple mask 1 removed from the face of the wearer 4 in a cutaway manner. The simple mask 1 is formed substantially symmetrically with respect to a longitudinal center line CC that bisects the horizontal dimension thereof. The edge of the bowl-shaped filter portion 2a is composed of an upper edge portion 10a, a lower edge portion 10b, and both side edge portions 10c. The upper overhanging portion 24 and the lower overhanging portion 28 are the outer covering sheet 16 and the inner covering. The sheet 17 and the filter medium 18 are formed by bending at the edges 10a, 10b, and 10c and projecting from the edges 10a, 10b, and 10c toward the inner side in the radial direction of the filter portion 2a. In the upper portion 11 in the figure, the upper overhanging portion 24 having the nose clip 26 is deformed so as to follow the nose of the wearer 4 and its both side portions as shown in FIGS. Presents. In addition, in the lower portion 12, the downward projecting portion 28 having the chin clip 29 is deformed so as to follow the jaw portion of the wearer 4 as shown in FIGS. I'm painting. Both side portions 31 and 32 of the upper portion 11 and the lower portion 12 are folded back to the front side of the covering portion 2, and the portions 33 and 34 are joined to the front surface of the covering portion 2, thereby inserting the strap portion 3. The tubular portions 36 and 37 are formed (see FIG. 1).

  4 and 5 are a perspective view of the simple mask 1 in a folded state and a view taken along the line V-V in the perspective view. The upper portion 11 and the lower portion 12 have substantially the same size and shape, and have a shape close to a semicircle. Therefore, the simple mask 1 can be folded so that the upper portion 11 and the lower portion 12 integrated at the joint portion 13 are overlapped. The strap portion 3 made of a rubber string contracts and extends straight between the side portions 31 and 31 and between the side portions 32 and 32. The nose clip 26, which had an inverted V shape in FIG. 3, is plastically deformed and extends straight and flat. In the simplified mask 1 shown in FIG. 5, when the upper portion 11 is deformed upward as indicated by an arrow A and the lower portion 12 is deformed downward as indicated by an arrow B so as to swell, the filter portion 2 has a bowl shape. As shown in FIG. 3, the annular strap portion 3 extends in the vertical direction of the filter portion 2 a, which is the vertical direction of the drawing, on the both side portions of the filter portion 2. A gap 25 is formed between the lower filter part 27 and the lower projecting part 28 (see FIG. 2).

  When the simple mask 1 formed in this manner is worn, the covering portion 2 is applied to the face, and the strap portion 3 is hung around the head 8. Next, in the upper portion 11, a finger is applied to the nose clip 26 from above the upper filter portion 23, and the upper projecting portion 24 including the nose clip 26 is deformed so as to follow the nose muscles and both side portions thereof. Further, in the lower portion 12, a finger is applied to the chin clip 29 from above the lower filter portion 27, and the lower projecting portion 28 including the chin clip 29 is deformed so as to follow the jaw portion. When the fingers are separated from the upper portion 11 and the lower portion 12, the filter portion 2a returns to a bowl shape, but the upper projecting portion 24 and the lower projecting portion 28 in which the nose clip 26 and the chin clip 29 are plastically deformed It will be in the state where it hits the part and the jaw part. As shown in FIG. 2, the gap between the upper filter portion 23 and the upper overhang portion 24 and between the lower filter portion 27 and the lower overhang portion 28 at that time leads to the inside of the covering portion 2. 25 and 30 are formed. In the simple mask 1 in such a state, when it is worn, the filter part 2a having a bowl shape so as to be convex toward the front of the wearer 4 has air permeability as a whole, and the nose. The use of the clip 26 or the chin clip 29 does not reduce the effective filtration area through which air can pass in the filter portion 2a.

  FIG. 6 is a partially broken plan view of the mask primary molded product 41 obtained when the simple mask 1 is unfolded at the joint portions 13, 33 and 34 of the simple mask 1 shown in FIG. The inner covering sheet 17 is on the upper side and the outer covering sheet 16 is on the lower side. Moreover, in this figure, illustration of the strap part 3 is abbreviate | omitted. The primary molded product 41 is a sheet-like composite composed of an outer covering sheet 16 having a substantially circular shape, an inner covering sheet 17, and a filter medium 18 interposed between the two sheets 16, 17, and is formed in the vertical direction. It is symmetrical with respect to a transverse center line DD that bisects the dimensions and extends in the transverse direction. The filter medium 18 is formed with a first slit 42 having a width W extending along a horizontal center line DD at a central portion in the horizontal direction. The outer covering sheet 16 and the inner covering sheet 17 extend from the outer edge of the filter medium 18 and overlap each other so as to form the peripheral portions 21a and 22a, and in the lateral direction on both the left and right sides of the primary molded product 41. Projecting portions 31 and 32 are formed. A cut portion 43 extending along the horizontal center line DD is formed between the portions 31 and 32 arranged in the vertical direction on both the left and right sides. The outer covering sheet 16 and the inner covering sheet 17 also extend to the inside of the first slit 42 formed in the filter medium 18 and overlap each other to form the peripheral portions 21b and 22b, and the width Y is increased. A second slit 45 is formed. Such a primary molded product 41 is folded so that the outer covering sheets 16 face each other along the horizontal center line DD, and is further indicated by a virtual line connecting the top portions 46 of the respective portions 31 located on the left and right. The inner cover sheets 17 overlap with each other along the first bent guide line 47 and the second bent guide line 49 indicated by a virtual line connecting the bottom portions 48 of the portions 32 located on the left and right sides. Wrapped to In other words, the primary molded product 41 is bent so that the horizontal center line DD becomes a mountain and the first and second bent guide lines 47 and 49 become valleys. The peripheral portions 21a and 22a of the bent primary molded product 41 are joined to each other with the inner covering sheets 17 facing each other to form the joined portion 13 of FIG. Each of the portions 31 and 32 of the peripheral portions 21a and 22a is bent toward the outer covering sheet 16 along a pair of left and right third folding curves 44 indicated by imaginary lines, and indicated by diagonal lines. 33 and 34, it joins with the front surface of the external coating sheet 16, and forms the tubular parts 36 and 37 (refer FIG. 1). What is obtained in this manner is a mask secondary molded product, and this product is formed by passing a rubber string through the tubular parts 36 and 37 and connecting both ends of the rubber string to form the strap part 3. 4 and 5 simple masks 1 are obtained. In such a primary molded product, a part above the lateral center line DD and a part above the first folding guide line 47 are respectively an upper part 11 and an upper filter of the simple mask 1 in FIG. It becomes part 23. The part below the horizontal center line DD and the part below the second folding guide line 49 are the lower part 12 of the simplified mask 1 and the lower filter part 27, respectively. The portion between the first bent guide line 47 and the second bent guide line 49 becomes the upper projecting portion 24 and the lower projecting portion 28 of the simple mask 1.

  FIG. 7 is a view similar to FIG. 6 showing an example of the embodiment of the present invention. In the illustrated primary molded product 41, the upper filter portion 23, the lower filter portion 27, and the overhang portion 61 are made separately. Each of the upper filter portion 23 and the lower filter portion 27 includes the outer covering sheet 16, the inner covering sheet 17, and the filter medium 18, and has a substantially semicircular shape. The overhang portion 61 is made of one sheet of air-permeable or air-impermeable sheet-like material, the second slit 45 is formed at the center, the portions 31 and 32 and the notches 43 are formed on both sides, and the second slit 45 is formed. A nose clip 26 and a chin clip 29 are attached to the upper and lower sides. The upper filter portion 23 and the overhang portion 61 are joined to each other with the edge portions 21c and 61a extending in the lateral direction overlapping each other, and the lower filter portion 27 and the overhang portion 61 are formed with edge portions 22c and 61b extending in the horizontal direction. They overlap and are joined together. The overhanging portion 61 serves as both the upper overhanging portion 24 and the lower overhanging portion 28 in FIG. The material can be either non-breathable or breathable. Moreover, what has elastic extensibility can also be used for the sheet material. For example, a soft and soft non-woven fabric having a thickness of about 0.1 to 1 mm, a sheet material such as foamed polyurethane, and foamed polyethylene can be used. In addition, a sweat-absorbing material can be used as the sheet material. In the example of FIG. 7, at least one of the outer covering sheet 16 and the inner covering sheet 17 in the upper filter portion 23 or the lower filter portion 27 is extended downward or upward in the drawing and connected to the lower filter portion 27 or the upper filter portion 23. By this, the sheet material forming the overhanging portion 61 can be replaced.

  The present invention can be practiced without the chin clip 29, and the downward projecting portion 28 at that time is preferably elastically extensible. The strap part 3 may be hung around the ear part of the wearer 4 instead of the head part 8. The band-shaped nose clip 26 in the illustrated example is formed in advance in an inverted V shape or an inverted U shape so that the nose portion can be sandwiched from both sides, and its opening angle can be changed elastically. It can be replaced.

  According to the present invention, it is possible to produce a simple mask that does not reduce the effective filtration area even if a nose clip is used.

The figure when the simple mask in use condition is seen from the front. The figure which shows the II-II line | wire cut surface of FIG. The partially broken perspective view when a simple mask is seen from back. The perspective view of the folded simple mask. The figure which shows the VV line | wire cut surface of FIG. The top view of the developed simple mask. The figure similar to FIG. 6 which shows an example of an embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Simple mask 2 Cover | cover part 2a Filter part 2b Overhang | projection part 3 Strap part 10a Upper edge part 10b Lower edge part 10c Side edge part 26 Nose clip 29 Chin clip 61 Overhang part

Claims (3)

A covering portion capable of covering the nostril and mouth of the mask wearer, and a strap portion attached to the covering portion and capable of being hung around either the head or the ear of the wearer A nose clip that can be deformed so that the covering portion is closely attached to both sides of the nasal muscles, and is a simple mask attached to the covering portion,
The covering portion has a breathable filter portion and an overhanging portion that can be in close contact with the face, and the filter portion is formed symmetrically with respect to a horizontal center line that bisects the mask in the longitudinal direction. A heel that is formed by overlapping and joining the substantially semicircular peripheral portions of the portion and the lower filter portion, and is convex toward the front of the wearer's face in the wearing state of the simple mask. it is possible to coloration shape, from said filter unit side edges portion positioned lower edge portion and side located upper edge portion and a lower located above the face when presenting the bowl-shaped has a peripheral portion Do that, the projecting portion is being formed by a sheet-like material protruding toward from said peripheral portion of said filter portion radially inwardly of the bowl-shaped, the lower and the upper filter portion The filter portion is formed with a portion projecting along the lateral center line at the side edge portions, and the projecting portion forms a tubular portion through which the strap portion is inserted. The simple mask, wherein the simple mask is bent to the front surface side and joined to the front surface, and the nose clip is attached to the projecting portion at the upper edge portion.   The simple mask according to claim 1, wherein a chin clip that can be deformed so as to bring the protruding portion into close contact with the wearer's jaw is attached to the protruding portion in the lower edge portion.   The sheet-like material forming the overhanging portion is obtained by folding at least a part of a breathable sheet forming the filter portion inward in the radial direction of the bowl shape. Simple mask.

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