JP2010131331A - Mask applying tool and mask - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily replace a dust mask for a worker and also easily adjust a degree of adhesion of the dust mask to a face of the worker. <P>SOLUTION: An arm 2 comprises a lever sucker 8 to stick fast to a helmet, and a mask detachable part 9 to fix the dust mask 1. An attachment mechanism part 16 of the dust mask 1 includes an attachment part 19, 19 to which the mask detachable part 9 of the arm 2 could be attached. In this embodiment, the attachment part 19, 19 is formed in a groove-like shape so that a projection part of the mask detachable part 9 could fit, which allows the dust mask 1 to be attached/detached to/from the arm 2 for easier replacement of the dust mask 1. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a mask mounting tool and a mask that can be applied to a dust-proof mask that prevents dust generated during dismantling work or renovation work from being taken in from the nasal cavity and oral cavity of an operator.

  Conventionally, an operator often wears a dust mask at a site where a large amount of dust is generated during dismantling work or renovation work. For example, an operator may cut off the surface of the hardened concrete only with a chipping work to roughen the surface, cut the concrete with an air cutter, or crush the wall when adding a concrete wall for seismic retrofitting work. Wear a dust mask at the site where dust is generated. As an example, this dust mask is configured by a filtering unit that covers the operator's nose and mouth and filters dust, and a rubber band attached to the filtering unit. An operator covers the nose and mouth with the filtering portion of the dust mask, and wears the dust mask by winding the band around the head.

  At this time, since the operator's neck and ears are pressed by the dust mask band, it often feels annoying. In particular, when a safety helmet is worn on the head after a towel is wrapped around the head as a measure to prevent skin irritation due to dust and to prevent stuffiness in summer, the distress of pressure by the band of the dust mask is remarkable. In addition, when wearing dust-proof goggles, pressure from the goggle band is also applied.

  When starting work at a repair site or the like, an operator first wears a dust mask by winding a dust mask band around the head. Next, the worker puts the helmet on the head, and fixes the helmet to the head with a helmet fixing string.

  When the helmet mask and the dust mask are mounted in this manner, for example, when the dust mask is replaced with a new one, this time, the helmet mask must be removed and then the dust mask must be removed, contrary to the order of wearing. For this reason, an operator often feels troublesome to attach and detach the dust mask.

  Further, when communicating with surrounding workers while wearing the dust mask, it is necessary to remove both the helmet and the dust mask because the conversation cannot be performed while the dust mask is worn.

  In connection with such a conventional example, Patent Document 1 discloses a dust mask wearing tool. This dust mask wearing tool is formed in a plate shape having a folding hinge, one end of which is attached to the edge of the helmet, and the other end is attached to the dust mask stretch band. The dust mask is attached close to the face by bending the plate with the hinge as the pivot. Moreover, the dustproof mask is separated from the face and removed by returning the bent plate to a straight line. This eliminates the need to remove the helmet each time the dust mask is removed.

JP2007-75522

  However, the dust mask wearing tool of Patent Document 1 adjusts the degree of adhesion of the dust mask to the operator's face because the length of the plate for fixing the dust mask and the length of the stretchable band of the dust mask are substantially constant. Is difficult.

  Accordingly, the present invention solves such a problem, and provides a mask mounting tool and a mask capable of easily exchanging a working mask and easily adjusting the degree of adhesion of the mask. The purpose is to provide.

  In order to solve the above-described problems, a mask wearing device according to the present invention includes an arm member provided at one end side so as to be attachable to a helmet that protects a wearer's head, and at least a nasal cavity portion and an oral cavity portion of the wearer. A mask mounting tool comprising a mask detachably provided on the other end side of the arm member, the mask including a filtering unit that filters dust in the atmosphere, and one of the filtering units. Provided on the other end side of the arm member, and the attachment mechanism portion can be engaged with the mask attaching / detaching portion, and the attachment mechanism portion is opened by exhalation of the wearer. It comprises an exhaust valve part for exhausting air and an attachment part attached to the mask attaching / detaching part.

  According to the mask mounting tool of the present invention, the mask mounting mechanism section includes the exhaust valve section that exhausts the exhalation of the wearer and the mounting section that is mounted on the mask attaching / detaching section of the arm member. With this configuration, it is possible to easily replace the mask, and it is possible to easily adjust the degree to which the mask adheres to the operator's face by adjusting the posture of the arm member.

  In order to solve the above-described problems, a mask according to the present invention is provided at a part of the filtering unit that covers at least the nasal cavity and the oral cavity of the wearer and filters dust in the atmosphere. In addition to an arm member that is provided with an exhaust valve portion that is opened by exhalation of the wearer and exhausts the exhalation, an arm member that is attached to one end side of a helmet that protects the wearer's head The exhaust valve part is provided with the latching | locking part which can be latched to an end side, It is characterized by the above-mentioned. According to the mask of the present invention, the mask can be easily replaced, and the degree to which the mask is in close contact with the face of the operator can be easily adjusted by adjusting the posture of the arm member.

  According to the mask wearing tool and the mask according to the present invention, the attachment portion that can be attached to the other end of the arm member provided at one end of the helmet that protects the head of the wearer is attachable to the mask. Provided in the department.

  The mask can be easily exchanged because the mask can be attached to and detached from the arm member by the attachment portion of the mask. Furthermore, it is possible to easily adjust the degree of close contact of the mask with the operator's face by adjusting the posture of the arm member.

<First Embodiment>
Subsequently, embodiments of the mask wearing tool and the mask according to the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a wearing example of a mask wearing tool 100 according to the present invention as the first embodiment. This mask wearing tool 100 is used when, for example, wearing the dust mask 1 that prevents dust generated during dismantling work or repair work from being taken in from the nasal cavity and oral cavity of the operator.

  A mask wearing tool 100 shown in FIG. 1 includes a dust mask 1 and an arm 2. The arm 2 is an example of an arm member, and one end side is detachably provided on a helmet 3 that protects the operator's head. In this example, the arm 2 includes a first link 4 to a fourth link 7, a lever-type suction cup 8 as an example of a suction cup member, and a mask attaching / detaching portion 9. A lever-type suction cup 8 is attached to one end of the first link 4. The lever-type suction cup 8 is adsorbed on the surface of the helmet 3. Thereby, the existing helmet 3 can be used as it is, without processing a helmet newly.

  For example, the lever type suction cup 8 includes a suction cup rubber 8c and a lever 8a shown in FIG. 6B. From the state in which the sucker rubber 8c is in contact with the surface of the helmet 3, the center of the sucker rubber 8c is displaced by the lever 8a in a direction away from the surface. As a result, the lever-type sucker 8 increases the degree of vacuum between the surface of the helmet 3 and the sucker rubber 8c, so that the lever-type sucker 8 can be more strongly adsorbed than a sucker made of only the sucker rubber 8c.

  The first link 4 and the second link 5 in the arm 2 shown in FIG. 1 are slidably connected and fixed by a butterfly bolt 10. The second link 5 and the third link 6 are connected by a ball joint so as to be rotatable in the spatial direction (three-dimensional). In this example, the second link 5 is provided with a coupling portion 11 formed in an Ω shape. A spherical body 12 is provided on the third link 6. The spherical body 12 is rotatably connected to an Ω-shaped coupling portion 11.

  The third link 6 and the fourth link 7 are coupled by a knurled thumbscrew 13 so as to be rotatable in a planar direction (two-dimensional). A mask attaching / detaching portion 9 is provided at the tip of the fourth link 7. The mask attaching / detaching portion 9 is engaged with an attachment mechanism portion 16 (see FIG. 2) provided in a part of the filtering portion 17 of the dust mask 1. The mask attaching / detaching portion 9 is provided with a pressing member 14. As will be described with reference to FIGS. 10 to 12, the pressing member 14 presses the edge 17 a of the dust mask 1 against the face of the operator.

  The dust mask 1 is an example of a mask, and is detachably provided on a mask attaching / detaching portion 9 provided on the other end side of the arm 2 so as to cover at least the nasal cavity portion and the oral cavity portion of the operator. The dust mask 1 includes a filtering unit 17 that filters dust in the atmosphere. The filter part 17 is provided with a guide plate 15 formed in the shape of the operator's nose. The guide plate 15 is made of a lightweight metal such as aluminum. The dust mask 1 is a disposable dust mask that is replaced every time it is used.

  FIG. 2 is a diagram illustrating a configuration example of the mask wearing tool 100. An attachment mechanism portion 16 is provided in the filtration portion 17 of the dust mask 1 shown in FIG. The attachment mechanism portion 16 is locked to a mask attaching / detaching portion 9 provided at the tip of the arm 2. For example, resin is used as the material of the attachment mechanism portion 16.

  Then, the structural example of the attachment mechanism part 16 and the mask attachment / detachment part 9 is demonstrated in detail. FIG. 3A is a perspective view showing a configuration example of the dust mask 1. FIG. 3B is a perspective view illustrating a configuration example of the attachment mechanism portion 16 of the dust mask 1.

  The attachment mechanism portion 16 shown in FIG. 3B includes an exhaust valve portion 18, attachment portions 19 and 19, and a convex portion 20. The exhaust valve portion 18 includes three vent holes 18a, an exhaust valve 18b (see FIG. 5A) provided inside the housing 16a, and an exhaust port 18c. When the worker breathes with the dust mask 1 attached, the exhaust valve 18b opens and the three vent holes 18a are exhausted by exhalation. Further, the exhaust valve 18b is closed by the operator's intake air, and is not sucked from the three vent holes 18a but is sucked from the filter portion 17.

  Groove-shaped attachment portions 19 and 19 are provided on the front and rear sides of the housing 16a of the attachment mechanism portion 16. The mask attaching / detaching portion 9 shown in FIG. Thereby, the dust mask 1 can be attached to and detached from the arm 2. The attachment portions 19 and 19 are examples of the attachment portion and the locking portion.

  4A is a front view showing an example in which the attachment mechanism portion 16 of the dust mask 1 is attached to the mask attaching / detaching portion 9 of the arm 2, and FIG. 4B is a side view of FIG. 4A. 4A and 4B, the mask attaching / detaching portion 9 is removed from the arm 2 for easy understanding of the description. For example, resin or hard rubber is used as the material of the mask attaching / detaching portion 9.

  When the dust mask 1 is attached to the arm 2, as shown in FIG. 4B, the dust mask 1 is moved in the direction of the arrow P1 so that the mask attaching / detaching portion 9 of the arm 2 covers the attachment mechanism portion 16 of the dust mask 1. Install.

  4B is provided with holes 9a and 9a for inserting and attaching the link 7 of the arm 2 shown in FIG. Further, the mask attaching / detaching portion 9 is provided with a rectangular hole portion 9b for inserting and attaching the pressing member 14 shown in FIG.

  FIG. 5A is an enlarged view of a cross section taken along arrow X1-X1 in FIG. 4A. The housing 16a of the attachment mechanism portion 16 of the dust mask 1 shown in FIG. 5A is provided with groove-like attachment portions 19 and 19 at two locations. Also, semicircular projections 9c and 9c are provided at two locations on the inner peripheral surface of the housing 9e of the mask attaching / detaching portion 9 of the arm 2. The protrusions 9c and 9c of the mask attaching / detaching portion 9 are fitted to the attaching portions 19 and 19 of the attaching mechanism portion 16, respectively.

  For example, as shown in FIG. 5B, the protrusion 9c above the mask attaching / detaching portion 9 is fitted to the attaching portion 19 above the attaching mechanism portion 16, and the protrusion 9c below the mask attaching / detaching portion 9 is attached to the attaching mechanism. It fits into the attachment part 19 below the part 16. Thereby, the dust mask 1 can be fixed to the arm 2.

  As shown in FIG. 5B, the vent hole 18a of the attachment mechanism portion 16 and the vent hole 9d of the mask attaching / detaching portion 9 are provided so as to overlap each other. Thereby, the exhalation of the worker can be efficiently exhausted from the exhaust valve unit 18.

  As described with reference to FIG. 3B, the exhaust valve portion 18 includes a vent hole 18a, an exhaust valve 18b, and an exhaust port 18c. When the worker breathes with the dust mask 1 mounted, the exhaust valve 18b opens and the exhaust holes 18a and 9d are exhausted by exhalation as shown in FIG. 5B. Further, the exhaust valve 18b is closed by the operator's intake air, and is not sucked from the vent holes 9d and 18a, but is sucked from the filter unit 17.

  Subsequently, a configuration example of the arm 2 will be described. FIG. 6A is a front view illustrating a configuration example of a main part of the arm 2. FIG. 6B is a side view illustrating a configuration example of a main part of the arm 2. 6B is a cross-sectional view taken along line X3-X3 in FIG. 6A.

  A lever-type suction cup 8 is attached to one end of the link 4 of the arm 2 shown in FIG. 6A. As shown in the sectional view of FIG. 6B, the lever-type suction cup 8 includes a lever 8a, an umbrella-shaped frame member 8b, a suction cup rubber 8c, and a link 8d. The lever 8a is rotatably coupled to one end of the link 8d. By rotating the lever 8a, the sucker rubber 8c coupled to the other end of the link 8d moves up and down with respect to the frame member 8b.

  For example, from the state in which the sucker rubber 8c is in contact with the surface of the helmet 3, the lever 8a is rotated and displaced in the direction away from the center of the sucker rubber 8c. As a result, the degree of vacuum between the sucker rubber 8c and the surface of the helmet 3 is increased, so that the sucker rubber 8c can be more strongly adsorbed than the sucker rubber 8c.

  The link 4 and the link 5 of the arm 2 are slidably connected and fixed by a wing bolt 10 and a hex nut 10a. For example, the flat link 4 and the linear link 5 are sandwiched and fixed by a butterfly bolt 10 and a hexagon nut 10a. At this time, a washer 10 b is interposed between the butterfly bolt 10 and the linear link 5.

  The link 5 is provided with a coupling portion 11 formed in an Ω shape. The Ω-shaped coupling portion 11 is composed of, for example, two plate members 11c each having a hemispherical bag body 11a. By combining the two plate members 11c, a spherical bag body 11d for enclosing the spherical body 12 is formed. When the link 5 and the link 6 are coupled, the coupling portion 11 sandwiches the link 5 and is fastened and fixed by the screw 11b in a state where the spherical body 12 of the link 6 is wrapped by the spherical bag body 11d. At this time, the link 5 is fixedly fixed to the coupling portion 11, but the sphere 12 of the link 6 rotates in the spatial direction (three-dimensional) with respect to the link 5.

  The link 6 and the link 7 are connected by a knurled thumbscrew 13 and a flanged nut 13d so as to be rotatable in a planar direction (two-dimensional). As is well known, the knurled thumbscrew 13 can be manually tightened in addition to the driver. Therefore, the position of the dust mask 1 attached to the mask attaching / detaching portion 9 of the link 7 can be easily adjusted. In addition, since the operator usually wears working gloves, it is possible to tighten the knurled thumbscrew 13 more firmly than when tightening with bare hands.

  Subsequently, an example of coupling of the link 6 and the link 7 of the arm 2 will be described in detail. FIG. 7A is an exploded view of the link 6 and the connecting element of the link 7. FIG. 7B is a view of the end portions 6a and 7a of the links 6 and 7 as seen from the direction of the arrow P2. As shown in FIG. 7B, the end portions 6a and 7a are formed in a ring shape. A flanged nut 13b is inserted into one side (upper side) of the ring-shaped end portions 7a and 6a, and the nut 13b is inserted into the cylindrical body 13c. Further, the flanged nut 13d is inserted into the other end portions 7a and 6a, and the nut 13d is inserted into the cylindrical body 13c. In this example, a washer 13e is interposed between the end 6a of the link 6 and the end 7a of the link 7. In this state, the knurled thumbscrew 13 is inserted into the flanged nuts 13b and 13d and screwed into the flanged nut 13d. Thereby, the link 6 and the link 7 can be rotatably coupled.

  FIG. 8 is a cross-sectional view taken along the line X2-X2 in FIG. A flanged nut 13 b shown in FIG. 8 is inserted through the end 7 a of the link 7, the washer 13 e, and the end 6 a of the link 6. Moreover, the front-end | tip part 13f of the nut 13b with a flange formed in the taper shape is mounted | worn in the recessed part 13h of the cylinder 13c.

  On the other hand, the nut 13d with the flange is inserted through the end 7a of the link 7, the washer 13e, and the end 6a of the link 6. Moreover, the front-end | tip part 13g of the nut 13d with a flange formed in the taper shape is mounted | worn in the recessed part 13i of the cylinder 13c. In this state, the knurled thumbscrew 13 is inserted into the flanged nuts 13b and 13d and screwed into the flanged nut 13d. Thereby, the link 6 and the link 7 can be fixed.

  FIG. 9A is a view of the arm 2 of FIG. 6B as seen from the direction of the arrow P3. 9B is a cross-sectional view taken along the line X4-X4 in FIG. The link 4 and the link 5 are slidably connected and are fastened and fixed by a butterfly bolt 10 and a hexagon nut 10a. For example, as shown in FIG. 9A, the flat link 4 is provided with a rectangular opening 4b. The butterfly bolt 10 is inserted into the opening 4b with the washer 10b and the linear link 5 interposed therebetween, and the hexagon nut 10a is screwed together.

  The flat link 4 includes wall surfaces 4a and 4a on both sides. The flat surface portion 10c of the hexagon nut 10a is sandwiched between the wall surfaces 4a and 4a. Thereby, since the hexagon nut 10a does not rotate when the butterfly bolt 10 is rotated, the link 4 and the link 5 can be easily tightened by the butterfly bolt 10.

  As shown in FIG. 9B, the link 4 includes an arcuate recess 5a at a portion where the linear link 5 abuts. The linear link 5 is aligned with the recess 5 a and fixed to the link 4. Thereby, the link 4 and the link 5 can be prevented from shifting.

  Next, the pressing member 14 will be described. FIG. 10A is a top view illustrating a configuration example of the pressing member 14 and the mask attaching / detaching portion 9. 10B is a cross-sectional view taken along arrow X5-X5 in FIG. 10A. The mask attaching / detaching portion 9 shown in FIG. 10A includes pressing members 14 and 14 arranged along the surface of the filtering portion 17 of the dust mask 1.

  The pressing member 14 is formed of resin or the like, and a pressing portion 14a is provided at the tip thereof. The pressing portion 14a is formed in a shape along the edge portion 17a of the dust mask 1 and presses the edge portion 17a of the dust mask 1 against the operator's face. As shown in FIG. 10B, the presser portion 14a is bent along the face of the operator. As a result, the left and right presser members 14, 14 have a substantially curved shape along the face of the operator.

  The pressing member 14 is attached by being inserted into the rectangular hole 9 b of the mask attaching / detaching portion 9. For example, the presser member 14 is inserted from the presser part 14 a into the rectangular hole 9 b of the mask attaching / detaching part 9. In this example, since the total length of the presser portion 14a is longer than the total length of the rectangular hole portion 9b, the arrow-shaped presser portion 14a is inserted into the rectangular hole portion 9b with the direction thereof being inclined. Note that the rectangular hole 9b is also illustrated from a different direction in FIG. 5A.

  A coupling portion 14 b is provided at the rear end of the pressing member 14. The left and right presser members 14 and 14 are coupled to each other by inserting a bolt 14c into the coupling portion 14b. For example, FIG. 10C is a top view illustrating a configuration example of the coupling portion 14b of the pressing member 14. As shown in FIG. 10C, bolts 14c are inserted into the holes of the coupling portions 14b and 14 so as to be pivotally coupled.

  The holding member 14 includes stoppers 14e and 14e for preventing the holding member 14 from coming off from the rectangular hole 9b. Note that an opening 14d may be provided in the pressing member 14 in order to suppress the airflow resistance when the pressing member 14 operates.

  FIG. 11 is a cross-sectional view showing an operation example (No. 1) of the pressing member 14. The presser member 14 shown in FIG. 11 is the same view as the presser member 14 shown in FIG. 10B. The dust mask 1 shown in FIG. 11 is a view cut from the arrow direction of X6 to X6 in FIG. 4A. The attachment mechanism 16 of the dust mask 1 shown in FIG. For example, the protrusion 9 c of the mask attaching / detaching portion 9 shown in FIG. 11 is fitted to the attaching portion 19 of the attaching mechanism portion 16. Thereby, the attachment mechanism part 16 of the dust mask 1 can be attached to the mask attaching / detaching part 9 of the arm 2.

  FIG. 12 is a cross-sectional view showing an operation example (No. 2) of the pressing member 14. In this example, the operator's face is indicated by a two-dot chain line. When the attachment mechanism portion 16 of the dust mask 1 is attached to the mask attaching / detaching portion 9 of the arm 2, the convex portion 20 of the attachment mechanism portion 16 shown in FIG. 12 abuts on the coupling portion 14 b of the holding member 14 to cause the holding member 14 to move. Energize. Thereby, the pressing part 14a of the pressing member 14 presses the edge 17a of the filtering part 17 of the dust mask 1 against the operator's face with the rectangular hole 9b as a fulcrum. Therefore, the dust mask 1 can be brought into close contact with the operator's face.

  As described above, according to the mask wearing tool 100 according to the present invention, the attachment mechanism portion 16 of the dust mask 1 is provided with the attachment portions 19 and 19 that can be attached to the mask attaching / detaching portion 9 of the arm 2.

  Thereby, since the dust mask 1 can be attached to and detached from the arm 2, the dust mask 1 can be easily replaced. Furthermore, the degree of adhesion of the dust mask 1 to the face of the operator can be easily adjusted by adjusting the posture of the arm 2 and the pressing member 14. Further, since it is not necessary to fix the dust mask 1 with a band or the like, it is possible to eliminate annoyance such as the band hanging on the ear. Further, when communicating with surrounding workers while wearing the dust mask 1, the posture of the arm 2 can be changed and the dust mask 1 can be easily moved from the face, thereby improving workability.

  5A and 5B is not limited to the groove-shaped mounting portions 19 and 19 and the projections 9c and 9c. The configuration of mounting the mounting mechanism 16 of the dust mask 1 shown in FIGS. . For example, there are various configurations such as a configuration for hooking on a nail and a configuration in which a convex portion is fitted in the concave portion, and in short, any configuration is possible as long as the mounting mechanism portion 16 of the dust mask 1 can be mounted on the mask attaching / detaching portion 9 of the arm 2. .

<Second Embodiment>
Then, the mask mounting tool 200 which concerns on this invention as 2nd Embodiment is demonstrated. FIG. 13 is a diagram illustrating a mounting example of the mask mounting tool 200. A mask mounting tool 200 shown in FIG. 13 includes a pressing spring mechanism 21 which is an example of a pressing mechanism, instead of the pressing member 14 shown in FIG. Other components of the mask wearing tool 200 are substantially the same as those of the mask wearing tool 100.

  The pressing spring mechanism 21 of the mask wearing tool 200 is attached to the mask attaching / detaching portion 9A, and urges the attaching mechanism portion 16A (see FIG. 14) provided on the dust mask 1A to work the edge portion 17a of the dust mask 1A. Press against the person's face.

  FIG. 14 is a diagram illustrating a configuration example of the mask wearing tool 200. An attachment mechanism portion 16A is provided in the filtration portion 17 of the dust mask 1A shown in FIG. The attachment mechanism portion 16A is engaged with a mask attaching / detaching portion 9A provided at the tip of the arm 2.

  Next, configuration examples of the attachment mechanism portion 16A and the mask attaching / detaching portion 9A will be described in detail. FIG. 15A is a perspective view illustrating a configuration example of the dust mask 1A. FIG. 15B is a perspective view illustrating a configuration example of the attachment mechanism portion 16A of the dust mask 1A.

  The attachment mechanism portion 16A shown in FIG. 15B includes an exhaust valve portion 18 and projecting portions 22 and 22. The protruding portions 22 and 22 are provided on the left and right of the housing 16b of the attachment mechanism portion 16A. A mask attaching / detaching portion 9A shown in FIG. 14 is hooked on the protruding portions 22, 22. Thereby, the dust mask 1 </ b> A can be attached to and detached from the arm 2. The protruding portions 22 and 22 are an example of an attachment portion and a locking portion.

  FIGS. 16A and 16B are cross-sectional views showing examples of mounting the mask attaching / detaching portion 9A and the attaching mechanism portion 16A. 16A and 16B are cross-sectional views of the mask attaching / detaching portion 9A and the attaching mechanism portion 16A cut from the same direction as FIGS. 5A and 5B.

  A pressing spring mechanism 21 shown in FIG. 16A is attached to the housing 9f of the mask attaching / detaching portion 9A, and includes a rod 21a, a compression spring 21b as an example of an urging member, and a ring member 21c. The housing 9f has an opening that is opened to a diameter slightly larger than the thickness of the column portion 21d of the rod 21a.

  With the bottom member 21f of the rod 21a removed, the rod 21a is inserted through the opening of the housing 9f with the ring member 21c interposed. After the insertion, the compression spring 21b is attached to the column portion 21d of the rod 21a, and the bottom member 21f is fixed to the rod 21a. Thereby, the rod 21a can be attached to the mask attaching / detaching portion 9A so as to be freely displaceable. The ring member 21c is affixed to the housing 9f with, for example, an adhesive and plays a role of buffering or reinforcing the rod 21a. Further, the stopper portion 21e of the rod 21a functions as a stopper.

  FIGS. 17A and 17B are cross-sectional views showing examples of mounting the mask attaching / detaching portion 9A and the attaching mechanism portion 16A. 17A and 17B are cross-sectional views of the mask attaching / detaching portion 9A and the attaching mechanism portion 16A cut from the same direction as FIG. On the edge of the housing 9f of the mask attaching / detaching portion 9A shown in FIG. 17A, hooking portions 9g and 9g are provided opposite to each other at two places. As shown in FIG. 17B, the hooking portions 9g and 9g are hooked on the protruding portions 22 and 22 of the attachment mechanism portion 16A, and the attachment mechanism portion 16A is attached to the mask attaching / detaching portion 9A.

  In this state, the mask attaching / detaching portion 9A provided on the arm 2 is pressed in the direction of the operator's face. As a result, as shown in FIG. 18, the bottom member 21f of the rod 21a abuts against the attachment mechanism portion 16A and is pushed up, and the compression spring 21b is compressed. At this time, the dust mask 1A is biased in the direction of the arrow P4 by the elastic force of the compression spring 21b. Thereby, dust mask 1A can be pressed on an operator's face.

  Since the mask attaching / detaching portion 9A is attached to the arm 2, the position is fixed in principle. However, for example, it is conceivable that the helmet 3 shown in FIG. 13 is displaced during the operation, and the mask attaching / detaching portion 9A provided on the arm 2 moves. Even in such a case, if the movement amount of the mask attaching / detaching portion 9A is within the range of the distance H in FIG. 18, the dust mask 1A is urged in the direction of the arrow P4 by urging the dust mask 1A by the elastic force of the compression spring 21b. The contact state between the edge 17a of the dust mask 1A and the operator's face can be maintained by being displaced. Thereby, even if the position of the mask attaching / detaching portion 9A is shifted due to unforeseen circumstances, it is not necessary to adjust the position of the dust mask 1A, so that the work efficiency can be improved.

  Even if the dust mask 1A is used for a long time and the dust mask 1A is deformed by moisture, heat, etc., if the movement amount of the mounting mechanism 16A is within the distance H, the elastic force of the compression spring 21b The dust mask 1A is biased in the direction of the arrow P4 to displace the dust mask 1A, and the contact state between the edge 17a of the dust mask 1A and the operator's face can be maintained.

  The present invention is extremely suitable when applied to a dust mask that prevents dust generated during dismantling work and renovation work from being taken in from the nasal cavity and oral cavity of the operator.

It is a figure which shows the example of mounting | wearing of the mask mounting tool 100 as 1st Embodiment based on this invention. 2 is a diagram illustrating a configuration example of a mask wearing tool 100. FIG. A and B are perspective views illustrating a configuration example of the attachment mechanism portion 16 of the dust mask 1. A and B are views showing an example in which the attachment mechanism 16 of the dust mask 1 is attached to the mask attaching / detaching portion 9 of the arm 2. FIGS. 4A and 4B are enlarged views of a cross section taken along arrow X1-X1 in FIG. A and B are diagrams illustrating a configuration example of a main part of the arm 2. A and B are exploded views of the coupling elements of link 6 and link 7. FIG. 7 is a cross-sectional view taken along the line X2-X2 in FIG. A and B are diagrams showing an example of coupling of the link 4 and the link 5. A to C are diagrams illustrating a configuration example of the pressing member 14. FIG. 6 is a cross-sectional view showing an operation example (No. 1) of the pressing member 14; FIG. 6 is a cross-sectional view illustrating an operation example (No. 2) of the presser member. It is a figure which shows the example of mounting | wearing of the mask mounting tool 200 as 2nd Embodiment. It is a figure which shows the structural example of the mask mounting tool. A and B are perspective views showing a configuration example of the attachment mechanism portion 16A of the dust mask 1A. A and B are enlarged cross-sectional views showing examples of attaching the mask attaching / detaching portion 9A and the attaching mechanism portion 16A. A and B are cross-sectional views showing a mounting example (No. 1) of the mask attaching / detaching portion 9A and the attaching mechanism portion 16A. It is sectional drawing which shows the example (the 2) of mounting | wearing of the mask attachment / detachment part 9A and the attachment mechanism part 16A.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1,1A ... Dust mask (mask), 2 ... Arm (arm member), 3 ... Helmet, 9, 9A ... Mask attaching / detaching part, 9c ... Projection part, 14 ... Presser Member 16, 16 </ b> A... Attachment mechanism part 17 .. filtration part 18 .. exhaust valve part 19 .. attachment part (locking part) 20. Pressing spring mechanism (pressing mechanism), 21a... Rod, 21b... Compression spring (biasing member), 100, 200.

Claims (8)

An arm member provided at one end side so as to be attachable to a helmet that protects the wearer's head, and detachably provided at the other end side of the arm member so as to cover at least the nasal cavity portion and the oral cavity portion of the wearer. A mask wearing device comprising a mask,
The mask is
A filtration unit for filtering dust in the atmosphere;
An attachment mechanism provided on a part of the filtration part and engageable with a mask attaching / detaching part provided on the other end side of the arm member;
The mounting mechanism portion is
An exhaust valve portion that opens by the wearer's exhalation and exhausts the exhalation;
A mask wearing tool comprising an attachment portion attached to the mask attaching / detaching portion. The mask attaching / detaching portion includes a pressing member disposed along the surface of the filtering portion of the mask,
The mounting mechanism portion includes a convex portion that abuts the pressing member and biases the pressing member,
The pressing member is
2. The mask according to claim 1, wherein the attachment portion is attached to the mask attaching / detaching portion and is urged by the convex portion to press an edge portion of the filtering portion against a face portion of the wearer. Wearing equipment. The mounting portion of the mounting mechanism is formed in a groove shape,
The mask mounting tool according to claim 1, wherein the mask attaching / detaching portion has a protrusion that fits into the groove-shaped attaching portion. The mask attaching / detaching portion includes a pressing mechanism that biases an attachment mechanism portion provided on the mask and presses an edge portion of the mask against an operator's face,
The pressing mechanism is
A rod attached to the mask attaching / detaching portion so as to be displaceable and contacting the attaching mechanism portion;
The mask mounting tool according to claim 1, further comprising: a biasing member that biases the rod toward the mounting mechanism portion.   The mask mounting tool according to claim 1, wherein a suction cup member that adsorbs to the surface of the helmet is provided on one end side of the arm member. A filtration unit that covers at least the nasal cavity and the oral cavity of the wearer and filters dust in the atmosphere, and is provided in a part of the filtration unit, and is opened by the wearer's exhalation to exhaust the exhalation In a mask having an exhaust valve portion that
The exhaust valve portion is provided with a locking portion that can be locked to the other end side of the arm member that is provided on one end side of the helmet that protects the head of the wearer. mask. A pressing member provided on the arm member and disposed along the surface of the filtering portion of the mask;
The exhaust valve portion includes a convex portion that abuts the pressing member and biases the pressing member,
The pressing member is
The engagement portion is engaged with the other end side of the arm member and is urged by the convex portion to press the edge of the filtration portion against the face portion of the wearer. 6. The mask according to 6. A pressing mechanism provided on the arm member for biasing the exhaust valve portion of the mask to press the edge of the mask against the face of the operator;
The pressing mechanism is
A rod that is in contact with the exhaust valve portion and attached to be freely movable;
The mask according to claim 6, further comprising an urging member that urges the rod toward the exhaust valve portion.

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