JP3821674B2 - Full face shape - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a full face shape, particularly to a full face shape provided with an eyepiece formed of a transparent or translucent flexible resin.
[0002]
[Prior art]
A conventional full face mask used for a respirator such as a dust mask or a gas mask has an intake device and an exhaust device at the lower front part of the face plate, and the intake device has a filter for filtering toxic gas and dust. It is attached. Japanese Utility Model Publication No. 60-41981 discloses a transmission device that transmits sound between wearers of a face piece and an exhaust device that are integrally formed, and can be applied to a face piece that has a limited installation space. A voice exhaust coupling device is disclosed.
[0003]
[Problems to be solved by the invention]
By the way, in order to ensure the wearer's field of view, a conventional full face body has an eyepiece made of a transparent hard material attached to an opening formed in a face body body made of a flexible material. Since this face body is flexible, the face contact portion is deformed in accordance with the shape of the wearer's face, so that the airtightness inside the face body when worn is maintained to some extent. However, since the eyepiece is a hard material, deformation of the face body is limited, and thus a good wearing feeling cannot be obtained. In addition, since the face piece cannot be folded, it is inconvenient to carry when not worn.
[0004]
On the other hand, it is conceivable to form the eyepiece having a full face shape with a flexible material. However, the conventional material has a problem that the image viewed through the eyepiece is distorted in addition to insufficient transparency even though it is flexible. Further, there has been no method for attaching such a flexible eyepiece to the flexible face body main body with the necessary strength and airtightness.
[0005]
SUMMARY OF THE INVENTION An object of the present invention is to provide a full face-shaped body in which an eyepiece formed of a flexible resin having sufficient transparency is firmly and airtightly attached.
[0006]
[Means for Solving the Problems]
A full face body according to the present invention comprises a face body body (1) having a peripheral edge (8) forming an opening (30) and formed of a flexible material, and a transparent or translucent flexible resin. An eyepiece (2) formed and covering the opening (30) of the face body body (1) and having a peripheral edge part hermetically bonded to the peripheral part (8) of the face body body (1) by an adhesive; A headband (3) connected to each end of the plurality of protrusions (4) of 1), and a pair of intake valve devices (12) attached to the face body body (1) below both sides of the eyepiece (2); And an exhaust valve device (13) attached to the face body (1) between (12) of the pair of intake valve devices. The face body main body (1) includes a face contact portion (10) branched at an acute angle (θ) inward from the peripheral edge portion (8) of the face body main body (1) and extending along the peripheral edge portion (8). The lower part of the face-facing portion (10) of the face body body (1) is branched to an acute angle (θ) from the peripheral edge portion (8) of the face body body (1) to the inside and a chin rest (9 ). A plurality of protrusions (4) of the face body body (1) are integrally formed on the face part (10) including the peripheral part (8) of the face body body (1) and the chin rest (9). The facepiece (10) of the facepiece body (1) is firmly attached to the wearer's face when worn, and the facepiece body (1) and the eyepiece (2) are foldable and elastic from their folded state. To return to a curved shape.
In the embodiment of the present invention, a voice board device (11) for transmitting the wearer's voice to the outside of the face piece is provided. The voice board device (11) includes an annular voice board frame (14) made of metal or resin embedded in a corresponding opening (30) of the face body body (1), and an inner part of the voice board frame (14). And a voice transmission member (15). The intake valve device (12) includes an annular valve frame (16) made of metal or resin embedded in a corresponding opening (30) of the face body body (1), and an intake valve device (12) attached to the valve frame (16). A flexible valve (17) that opens only at a time, and a cartridge (23) that is attached to the intake valve device (12) and removes toxic substances in the outside air. The exhaust valve device (13) includes an annular valve frame (19) made of metal or resin embedded in a corresponding opening of the face body body (1), and attached to the valve frame (19) so that it opens only during exhaust. And a flexible valve (20) to be valved. The lower end portion of the eyepiece (2) has a shape that conforms to the outer shape of the voice transmitting plate device (11) and the intake valve device (12). The face contact portion (10) extends upward in an inverted triangle shape from both sides of the chin rest portion (9), and the upper edge of the face contact portion (10) which is the base of the inverted triangle is in contact with the wearer's forehead. It is formed almost horizontally.
[0007]
[Action]
Since the eyepiece (2) is formed of a transparent or translucent flexible resin, the shape of the face contact portion (10) of the face piece can be greatly changed in accordance with the face shape of the face piece wearer. For this reason, the adhesion between the face body and the face is high, and intrusion of outside air from the face contact portion (10) is prevented and a good wearing feeling is obtained. Further, the central part of the transparent or translucent eyepiece (2) has a large curved area, and can be arranged along the face of the wearer over the entire surface of the eyepiece (2) and at a substantially constant distance from the face. . For this reason, the wearer can secure an extremely wide field of view through the eyepiece (2). Furthermore, the eyepiece (2) has sufficient transparency, and the image viewed through the eyepiece (2) is hardly distorted. The flexible face piece can be folded laterally to form a compact shape, which is convenient for storage and carrying. The flexible / restorable face body returns to a curved shape by its own elasticity from the folded state. Since the eyepiece (2) is adhered to the face body main body (1) with sufficient strength and airtightness with an adhesive, there is no possibility that outside air may enter from the joint between the eyepiece (2) and the face body main body (1). In addition, a pair of intake valve device (12) and exhaust valve device (13) are attached to the face body body (1), and harmful substances in the external environment such as harmful gases or dust in a hazardous work environment The work safety of the wearer can be ensured.
[0008]
【Example】
Embodiments of the full face shape according to the present invention will be described below with reference to FIGS.
1 and FIG. 2 has a face body body 1 made of a flexible material, an eyepiece 2 made of a transparent flexible resin, and the face body body 1 fixed to the wearer's head. And a headband 3 for the purpose. The headband 3 includes a metal or resin buckle 5 connected to each end of six protrusions 4 formed integrally with the face body 1. An elastic band 6 is connected to the buckle 5, and a rectangular pad 7 is fixed to the center of the band 6. At the time of wearing, the band 6 can be adjusted to a desired length by the buckle 5, and the pad 7 can be brought into contact with the back of the wearer in accordance with the shape of the wearer's head.
[0009]
In the full face body of the present invention, the face body 1 has a peripheral edge 8 that forms the opening 30, and as shown in FIG. 4, the peripheral edge of the eyepiece 2 is sufficiently strong and airtight with an adhesive. Bonded to the peripheral edge 8 of the face body 1. The face body 1 includes a face contact portion 10 that is branched inward from the peripheral edge 8 of the face main body 1 at an acute angle θ and that extends along the peripheral edge 8. A transparent flexible resin forming the eyepiece 2 has sufficient transparency, and an image viewed through the eyepiece 2 is hardly distorted, for example, polyurethane, methyl methacrylate, polystyrene, acrylic acid resin, acrylic glycol carbonate resin (CR39) is used. Examples of the flexible material forming the face body 1 include silicone rubber, polybutadiene, butadiene styrene rubber, butadiene acrylonitrile rubber, polychloroprene, polyisoprene, chlorosulfonated polyethylene, polyisobutylene, isobutylene isoprene rubber, acrylic rubber, and polysulfide. Synthetic rubber such as synthetic rubber, urethane rubber or fluorine rubber, or natural rubber can be used. Adhesives suitable for polyurethane bonding such as polyurethane, polychloroprene, polyvinyl acetate, resorcinol formaldehyde resin, polysulfide-epoxy resin, polyamide-epoxy resin, etc. can be used for bonding the face body body 1 and the eyepiece 2. Further, as shown in FIG. 4, the lower part of the face contact portion 10 of the face body main body 1 forms a chin receiving portion 9 with which the wearer's lower jaw comes into contact. It is branched inward at an acute angle θ. The plurality of protrusions 4 of the face body main body 1 are integrally formed with the face contact portion 10 including the peripheral edge portion 8 and the jaw support portion 9 of the face body main body 1. The face contact portion 10 extends upward in an inverted triangle shape from both sides of the chin rest portion 9, and the upper edge of the face contact portion 10 that becomes the base of the inverted triangle is formed substantially horizontally so as to contact the wearer's forehead. The
[0010]
The face body body 1 and the eyepiece 2 are both flexible, and the face contact portion 10 of the face body is deformed in conformity with the shape of the wearer's face when worn, and is in close contact with the face of the wearer. Therefore, a gap that causes outside air to enter the face does not occur between the face and the face. Since the face-contact part 10 contacts the wearer's face with elasticity, a good wearing feeling can be obtained. Further, since the eyepiece 2 is bonded to the face body 1 with sufficient strength and airtight with an adhesive, there is no possibility that outside air may enter from the joint between the eyepiece 2 and the face body 1. Therefore, harmful substances in the external environment such as harmful gas or dust in a dangerous work environment do not flow into the entire shape face, and the work safety of the wearer can be ensured.
[0011]
The central portion of the eyepiece 2 has a large curved area, and when worn, the eyepiece 2 is disposed along the entire face of the eyepiece 2 along the wearer's face and at a substantially constant distance from the face. For this reason, as shown in FIG. 6, the wearer can ensure a very wide field of view through the eyepiece 2. Furthermore, as shown in FIG. 7, the flexible face body can be folded in the lateral direction to form a compact shape, which is convenient for storage and carrying. Since the face body is flexible and recoverable, it returns to a curved shape by its own elasticity from the bent state.
[0012]
As shown in FIGS. 1 and 3, a sound transmission plate device 11 is provided on the front surface of the face body body 1 immediately below the eyepiece 2. A pair of intake valve devices 12 are provided on the left and right of the sound transmission plate device 11, and an exhaust valve device 13 is provided on the bottom of the face body body 1 below the sound transmission plate device 11. As shown in FIG. 4, the voice board device 11 has an annular voice board frame 14 made of metal or resin embedded (inserted) in a corresponding opening of the face body 1, and the voice board frame 14. A voice transmission member 15 is disposed inside. The wearer's voice is transmitted to the outside of the face piece through the voice board device 11.
[0013]
As shown in FIG. 5, each of the pair of intake valve devices 12 includes an annular valve frame 16 made of metal or resin embedded in a corresponding opening of the face body 1, and is opened only during intake in the valve frame 16. A flexible valve 17 made of rubber for valve is attached. In order to prevent damage to the valve 17, a protective cover 18 made of resin is provided inside the face piece. Similarly, as shown in FIG. 4, the exhaust valve device 13 also has an annular valve frame 19 made of metal or resin, and a flexible valve 20 made of rubber that opens only during exhaust is provided in the valve frame 19. It is attached. A resin protective cover 21 for preventing damage to the valve 20 is provided outside the face piece.
[0014]
As shown in FIG. 6, when the face body is used as a dust mask or gas mask, a cartridge 23 for removing harmful gas and dust in the outside air can be attached to the intake valve device 12. As shown in FIGS. 2 and 5, the intake valve device 12 includes a cartridge locking portion 22 for attaching the cartridge 23. Further, the exchange of air inside and outside the face body is restricted in one direction by the valve 17 and the valve 20, and the outside air containing harmful substances is prevented from entering from the exhaust valve device 13. Thereby, it can prevent that the external air containing a harmful | toxic substance flows in into a face body, and can ensure a wearer's work security.
[0015]
Embodiments of the present invention are not limited to the above-described examples, and can be modified. For example, the eyepiece 2 may be colored by mixing a colorant in a transparent resin and using a transparent but colored resin. Moreover, you may comprise so that a photochromic substance may be mixed in resin and color may be changed when the eyepiece 2 is exposed to sunlight.
[0016]
【The invention's effect】
As mentioned above, the eyepiece formed of a transparent or translucent flexible resin is bonded to the face body body with sufficient strength and airtightness, thus preventing the entry of outside air from the face part and good wearing. A feeling is obtained. Therefore, harmful substances in the external environment such as harmful gas or dust in a dangerous work environment do not flow into the entire shape face, and the work safety of the wearer can be ensured. In addition, since the wearer can ensure a very wide field of view through the eyepiece, work efficiency can be improved. Furthermore, since the flexible face body can be made compact, it is convenient for storage and carrying.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of a full face body according to the present invention. FIG. 2 is a side view showing an embodiment of the full face face according to the invention. 4 is a cross-sectional view taken along the line AA in FIG. 1. FIG. 5 is a cross-sectional view taken along the line BB in FIG. 2. FIG. 6 is a perspective view showing a wearing state of the full face body of the present invention. Is a perspective view showing the folded shape of the full face shape
1. . 1. Faceted body, . Eyepiece, 3. . Headband, 4. . Protrusions, 8. . 10. peripheral edge of the opening; . A voice board device, 12. . 12. intake valve device; . Exhaust valve device, 14. . Voice board frame, 15. . Voice transmission member 16,19. . Valve frame, 17, 20. . Valve, 23. . cartridge

Claims (3)

A face body body having a peripheral edge portion forming an opening and formed of a flexible material;
An eyepiece that is formed of a transparent or translucent flexible resin and has a peripheral edge that covers the opening of the main body and is hermetically bonded to the peripheral edge of the main body by an adhesive;
A headband connected to each end of the plurality of protrusions of the mask body,
A pair of intake valve devices attached to the face body main body below both sides of the eyepiece;
An exhaust valve device attached to the face body body between a pair of intake valve devices,
The face body main body is provided with a face-faced portion that is branched at an acute angle inward from the periphery of the face body main body and extends along the periphery.
The lower part of the face part of the face body main body forms a chin rest that branches at an acute angle inward from the peripheral part of the face body main body and the lower jaw of the wearer abuts.
A plurality of protrusions of the face body body are formed integrally with the face part including the peripheral part of the face body body and the chin rest,
When wearing, the face part of the facepiece body is firmly attached to the wearer's face,
A full-face shape body, wherein the face body body and the eyepiece are foldable and return to a curved shape by their own elasticity from the folded state. A voice board device that transmits the wearer's voice to the outside of the face piece,
The voice board device includes an annular voice board frame made of metal or resin embedded in a corresponding opening of the face body body, and a voice transmission member arranged in the voice board frame,
An intake valve device includes an annular valve frame made of metal or resin embedded in a corresponding opening of a face body body, a flexible valve attached in the valve frame and opened only during intake, and an intake valve device And a cartridge for removing toxic substances in the outside air,
The exhaust valve device includes an annular valve frame made of metal or resin embedded in a corresponding opening of the face body body, and a flexible valve that is attached in the valve frame and opens only during exhaust,
The lower end part of an eyepiece is a full face body of Claim 1 which has a shape which follows the external shape of a sound transmission board apparatus and an intake valve apparatus.   The face-facing portion extends upward in an inverted triangle shape from both sides of the chin rest, and the upper edge of the face-facing portion serving as the base of the inverted triangle is formed substantially horizontally so as to abut the wearer's forehead. 3. The full face shape according to 1 or 2.

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