JP2005160499A - Dust mask - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dust mask having superior contact property to the nose and the vicinity of a mask wearer. <P>SOLUTION: This dust mask 1 is provided with a cup-shaped filter part 6 projecting frontward from the mouth of the mask wearer. The inside of the filter part 6 is attached with an annular member 21 composed of an elastically deformable material. The annular member 21 is formed with a pair of first notch parts 28 symmetrical relative to a vertical center axis C-C of the dust mask 1 and extending from the inner circumferential edge 23 of the annular member 21 to the top edge part 11 of the filter part 6. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a dust mask, and more particularly to a dust mask suitable for use as a disposable dust mask.

  The simple dust mask disclosed in Japanese Utility Model Publication No. 55-148759 (Patent Document 1) is a disposable mask having a V-shaped notch at the center of the top edge portion of the mask, and both sides of the notch. Has a folding guide line for facilitating the contact of the top edge portion with the face of the mask wearer.

  The mask disclosed in Japanese Utility Model Laid-Open No. 62-130655 (Patent Document 2) is also disposable, and a sponge for closing the mask body between the mask wearer's nose and the mask body at the top edge of the mask body. It has a member.

In addition, a flexible strip made of aluminum or the like is attached to the outer surface of the width-direction center portion of the dust mask formed in a cup shape, and the strip is pressed against the nose of the mask wearer and deformed into a V shape, It is well known to fit the mask worn by the strip to the nose and the vicinity
Japanese Utility Model Publication No. 55-148759 Japanese Utility Model Publication No. 62-130655

  In the simple dust mask disclosed in Patent Document 1, the top edge portion has a V-shaped cutout portion for allowing the top edge portion to adhere to the nose and the vicinity thereof. In order to adhere to the top edge portion, the shape of the top edge portion must be appropriate, and at the same time, a force for making the top edge portion must be effectively applied to the top edge portion. However, the mask disclosed in Document 1 does not include means for applying the force.

  Also in the mask disclosed in Patent Document 2, in order to bring the sponge member into close contact with the nose and the vicinity thereof, the force for making contact must be effectively applied to the sponge member. However, the mask disclosed in Document 2 also does not include means for applying the force.

  In addition, in a known dust mask that causes the top edge portion of the mask to closely contact the nose of the mask wearer by deforming a strip such as aluminum, if the strip is excessively deformed, a strong irritation to the nose is caused. May give.

  In the present invention, a dust-proof mask having a simple structure such as a disposable dust-proof mask as seen in the prior art is improved so that the adhesion to the nose of the dust-mask mask wearer and the vicinity thereof is improved. This is a problem.

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 breathable filter portion that covers the mouth and nostrils of the dust mask wearer and the head and ears of the dust mask wearer. A strap that can be rotated to bring the filter portion into close contact with the face of the dust mask wearer, and a top edge portion where the filter portion is positioned above the nostril; and a position below the mouthpiece A dust-proof mask having a bottom edge portion to be formed, and both side edge portions connecting the top edge portion and the bottom edge portion, and bulging toward the front of the mouthpiece.

  In such a dust mask, the present invention is characterized as follows. The inside of the filter portion is made of an elastically deformable sheet material, forms a ring having an outer peripheral edge and an inner peripheral edge, and the inner peripheral edge defines a through hole that allows the mouth to enter. An annular member is attached by joining the outer peripheral edge to the top edge portion and the bottom edge portion of the filter portion, and extends in the width direction of the dust mask in parallel with the top edge portion in the annular member. The portion is formed with a pair of first cutout portions that are symmetrical with respect to a longitudinal center line that bisects the width of the dust mask and that extend from the inner peripheral edge toward the top edge portion.

  In the dust mask configured as described above, among the annular members made of elastically deformable sheet material, a portion located between the first notch and the first notch is located on the face of the dust mask wearer's face. Can be folded back to the side. If the dust mask is worn with the annular member folded in this manner, the folded portion will elastically adhere to the nose and its vicinity in an attempt to return to its original state elastically, thereby improving the adhesion of the dust mask to the face. Can be improved.

  In one embodiment of the present invention, the annular member is also formed with a second cutout portion extending from the inner peripheral edge toward the top edge portion on the longitudinal center line.

  In such a dust mask, the folded portion of the annular member is particularly easily adhered to the nose and the vicinity thereof.

  In another embodiment of the present invention, the annular member has a portion between each of the first cutout portions and the second cutout portion toward the top edge portion of the mask wearer. And a part of the folded part is joined to the annular member facing the part.

  In such a dust mask, since the part between the first cutout part and the second cutout part in the annular member is folded in advance, the trouble of turning back the part when wearing the dust mask is saved. It can be omitted.

  In another embodiment of the present invention, each of the side edge portions of the filter portion is folded back in the width direction of the dust mask so that the outer surfaces of the filter portion face each other, and a part of the outer surface facing each other is formed. By joining together, a tubular portion is formed that extends in the vertical direction of the filter portion and can be inserted through the strap. In such a dust mask, it is not necessary to use a special member for attaching the strap.

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

  FIG. 1 is a perspective view of a dust mask 1 in use. The dust mask 1 is hung on the wearer's head 7 or ears so as to cover the mouth 3 and nostril 4 (see FIG. 3) of the dust mask wearer 2 and the filter portion 6. Is attached to the face of the wearer 2. The filter portion 6 has a cup shape that swells toward the front of the mouth 3 of the wearer 2, and includes a top edge portion 11 that forms an arc in the upper part of the drawing, a bottom edge portion 12 that draws an arc in the lower part of the drawing, It has a pair of side edge part 13 which connects these top edge part 11 and bottom edge part 12 in right and left. On the center line CC that bisects the width of the filter portion 6, a line 10 for tacking appears, and a tubular portion 14 for inserting the strap 8 is formed in the side edge portion 13. Has been.

  FIG. 2 is a view showing the inside of the dust mask 1 partially cut away. The dust mask 1 has an annular member 21 made of an elastically deformable sheet material on the inner surface side of the filter portion 6. The annular member 21 has an outer peripheral edge 22 and an inner peripheral edge 23, and the inner peripheral edge 23 defines a through hole 24 inside thereof. The outer peripheral edge 22 and the vicinity thereof are joined to the top edge portion 11 and the bottom edge portion 12 of the filter portion 6 by adhesion or welding. Of the annular member 21, a side portion 26 that is between the top edge portion 11 and the bottom edge portion 12 and extends substantially vertically in the drawing is in a non-joined state with respect to the filter portion 6. In the annular member 21, a portion 27 extending in the width direction of the dust mask in parallel with the top edge portion 11 of the filter unit 6 is a pair of symmetrical with respect to a vertical center line CC that bisects the width of the dust mask 1. A first cutout portion 28 and a single second cutout portion 29 located on the center line CC are formed. The first and second cutout portions 28 and 29 extend from the inner peripheral edge 23 toward the top edge portion 11 of the filter portion 6 so as to define a downward V-shape or U-shape. In the annular member 21, a flap 31 is formed between each of the first cutout portions 28 and the second cutout portion 29. In the annular member 21 formed of an elastically deformable sheet material, each of the flaps 31 can be elastically bent upward along the phantom line 35 shown in the figure by arrows P and Q. The folded flap 31 is indicated by an imaginary line 30. The side portion 26 of the annular member 21 is also elastically deformable, and an example of the deformation is indicated by virtual lines 33 and 34.

  FIG. 3 is a diagram showing a cross section taken along line III-III in FIG. 1. When wearing the dust mask 1, each of the flaps 31 of the annular member 21 is bent in the directions of arrows P and Q in FIG. 2, and the flap 31 is moved by its own elastic restoring force to the nose 4 of the wearer 2 and its Press contact with the vicinity from above. Moreover, in the bottom edge part 12 of the filter part 6, the annular member 21 is press-contacted to the wearer's 2 jaw part from the front of the face. The mouth 3 of the wearer 2 is inside the through hole 24 in the annular member 21. The filter section 6 shown in cross section in the figure includes a breathable protective sheet 41 that forms the outer surface, a breathable shape retaining sheet 42 that forms the inner surface, and a sheet that is interposed between the two sheets 41 and 42. Filter medium 43 in the form of a filter. In the top edge part 11, the bottom edge part 12, and the side edge part 13 of the filter part 6, the protective sheet 41 and the shape retaining sheet 42 extend from the edge part of the filter medium 43 and overlap each other, and adhere to each other by adhesion or welding. It is joined.

  FIG. 4 is a diagram showing a wearing state of the dust mask 1 different from that in FIG. 3. In the dust-proof mask 1 in the worn state, the annular member 21 in the vicinity of the bottom edge portion 12 is bent and is pressed against the jaw portion of the wearer 2 from below. The dust mask 1 can be worn in either the state shown in FIG. 3 or the state shown in FIG.

  FIG. 5 is a view showing a cross section taken along the line V-V in FIG. 2. At the side edge portion 13 in the filter part 6, the overlapping protective sheet 41 and the shape-retaining sheet 42 are folded back in the width direction of the filter part 6 with the protective sheet 41 inside, and a part 46 of the folded part faces it. The protective sheet 41 is joined by means such as adhesion, welding, and stitching. Thus, the side edge portion 13 of the filter portion 6 is formed with a tubular portion 14 through which the strap 8 can be inserted and which extends in the vertical direction in FIG.

  In the dust mask 1 configured in this manner, the strap 8 is preferably made of rubber, and the length of the strap 8 is adjusted to adjust the top edge portion 11, the bottom edge portion 12, and the side of the filter portion 6. The edge portion 13 is brought into close contact with the face of the wearer 2. However, the flap 31 is bent upward at the top edge portion 11 (see FIGS. 1 and 2). Of the face, the nose 4 and the vicinity of the nose 4 and the vicinity of the chin, which are difficult to adhere the filter portion 6 by the action of the strap 8, are elastically deformed with the annular member 21 and a bent flap 31 which is a part thereof. Adhere by restoring force. The dust mask 1 that uses the action of the strap 8 and the action of the annular member 21 in this way also adheres well to the nose 4 and the vicinity thereof. The dust mask 1 is worn by selecting an elastic sheet material that can be brought into close contact with the face with an appropriate pressure contact force for the annular member 21 and a rubber string having an appropriate tightening force for the strap 8. Therefore, the wearer 2 does not need to adjust the dust mask 1.

  In the dust mask 1, there is no special rule for the filtering mechanism in the filter unit 6. In the case of the filter portion 6 in the illustrated example, the protective sheet 41 is used to prevent the outer surface of the filter medium 43 located on the inner side from touching, and the protective sheet 41 has a breathable woven fabric, non-woven fabric, or thermoplastic. A molded article made of plastic and having an appropriate air-permeable opening can be used. The shape-retaining sheet 42 itself has a cup shape, has sufficient rigidity to maintain the shape, and the shape of the dust-proof mask 1 is maintained by the shape-retaining sheet 42. For the shape-retaining sheet 42, a breathable nonwoven fabric or a thermoplastic molded product having a large number of breathable openings can be used. If the protective sheet 41 and the shape-retaining sheet 42 contain thermoplastics, both the sheets 41 and 42 can be welded by ultrasonic wave or embossing under heating. As the filter medium 43, those commonly used in the technical field can be used. For the annular member 21, an elastically deformable natural rubber or synthetic rubber sheet, a foamed polyurethane sheet, a foamed polyethylene sheet, an elastically deformable nonwoven fabric, or the like can be used. In the illustrated example, the side portion 26 of the annular member 21 is not joined to the filter portion 6, but the present invention can also be implemented by joining the side portion 26 to the filter portion 6. It is.

  FIG. 6 is a view similar to FIG. 2 showing an example of the embodiment of the present invention. In the annular member 21 in the dust mask 1 of the illustrated example, only a pair of first cutout portions 28 that are symmetrical with respect to the center line CC are formed. The present invention can also be implemented in this manner.

  7 and 8 are a view similar to FIG. 2 showing another example of the embodiment of the present invention and a view taken along the line VIII-VIII of the view. The annular member 21 of the dust mask 1 has a first cutout portion 28 and a second cutout portion 29, and each of the flaps 31 formed on both sides of the second cutout portion 29 is shown in FIG. It is bent in the directions indicated by arrows P and Q. A part of the bent flap 31, for example, a portion 47 in the vicinity of the first cutout 28 is joined to the annular member 21 facing it by bonding or welding. A portion 48 of the flap 31 in the vicinity of the second cutout portion 29 is not joined to the annular member 21 facing the second cutout portion 29 and tends to return to a state before being bent. As can be seen in FIG. 8, such a flap 31 is such that the portion 47 is joined to the annular member 21 in the vicinity of the top edge portion 11 of the filter portion 6, while the portion 48 approaches the nose of the wearer 2. Is spaced from the top edge portion 11. Since the dust mask 1 of such an aspect does not need to bend the flap 31 upward like the dust mask 1 of FIG. 1 when wearing it, the effort for wearing can be saved.

  According to the present invention, it is possible to manufacture a dust mask that can be easily adhered to the nose and the vicinity thereof.

The perspective view of the dust mask in use condition. The fragmentary broken view which shows the inner side of a dust mask. The figure which shows the III-III line | wire cut surface of FIG. The figure similar to FIG. 3 which shows the wearing condition of a dust mask. The figure which shows the VV line | wire cut surface of FIG. The figure similar to FIG. 2 which shows an example of an embodiment. The figure similar to FIG. 2 which shows another example of an embodiment. VIII-VIII sectional view taken on the line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dust mask 6 Filter part 8 Strap 11 Top edge part 12 Bottom edge part 13 Side edge part 14 Tubular part 21 Annular member 22 Outer peripheral edge 23 Inner peripheral edge 24 Through-hole 27 Part extending in the width direction 28 First notch part 29 Second Notch CC Vertical center line

Claims (4)

A breathable filter portion that covers the mouth and nostrils of the dust mask wearer, and the filter portion is closely attached to the face of the dust mask wearer by being hung around one of the head and ears of the dust mask wearer. A top edge portion that is located above the nostril, a bottom edge portion that is located below the mouthpiece, and the top edge portion and the bottom edge portion. A dust-proof mask having a cup-like shape that swells toward the front of the mouth,
The inside of the filter portion is made of an elastically deformable sheet material, forms a ring having an outer peripheral edge and an inner peripheral edge, and the inner peripheral edge defines a through hole that allows the mouth to enter. An annular member is attached by joining the outer peripheral edge to the top edge portion and the bottom edge portion of the filter portion, and the width direction of the dust mask is parallel to the top edge portion in the annular member. A pair of first cutout portions extending symmetrically with respect to the longitudinal center line that bisects the width of the dust mask and extending from the inner peripheral edge toward the top edge portion are formed in the portion extending to The dust mask as described above.   2. The dust mask according to claim 1, wherein a second cutout portion extending from the inner peripheral edge toward the top edge portion is formed on the annular member on the longitudinal center line.   The annular member is folded back at a portion between each of the first cutout portions and the second cutout portion toward the top edge portion toward the face of the mask wearer. 3. A dust mask according to claim 2, wherein a part of said part is joined to said annular member facing said part.   Each of the side edge portions of the filter portion is folded back in the width direction of the dust mask so that the outer surfaces of the filter portion face each other, and a part of the facing outer surfaces are joined to each other, whereby the vertical direction of the filter portion The dust mask according to any one of claims 1 to 3, wherein a tubular portion is formed which extends into the strap and can be inserted through the strap.

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