JP5524699B2 - Tie fasteners and masks - Google Patents

Description

  The present invention relates to a mask that prevents inhalation of dust during work in a dusty place, for example, a construction site, and a fastening strap attachment for attaching the mask strap to the mask body. It is.

  As an example of the above-described conventional mask, as shown in FIG. 13, a plurality of slits 54 for inserting the fastening string 56 and a plurality of slits for communicating with the ends of the slits 54 to lock the fastening string 56. There has been proposed a mask 51 in which small pieces 53 each having a small hole 55 are attached to the left and right end portions of the mask main body 52 (see, for example, Patent Document 1).

In this mask 51, by sequentially inserting a portion of the fastening string 56 from each slit 54 into each small hole 55 and locking it, the fastening string 56 can be easily attached, and the reverse operation is sequentially performed. By doing so, the fastening string 56 can be easily removed.
Therefore, it is possible to easily adjust the length of the fastening string 56 and the like.

  As another example of the conventional mask, as shown in FIG. 14, the bending piece 67 is bent and pressed against the flat surface portion 64 by a tightening string 68 wound around the tightening string passing holes 65, 66, and the tightening string 68. Has been proposed that attaches the tightening string 68 by pressing the end portion 68a of the tightening string 68 against the flat surface portion 64 with the tightening string 68 so as not to come off (see, for example, Patent Document 2).

  This mask does not require any special work or accessory parts to fix the fastening string 68, and the fastening string 68 can be fixed with one touch.

  Further, as still another example of the conventional mask, as shown in FIG. 15, the fastening string locking portions 74U and 74D having two slits 75 and 76 for locking the ends of the fastening strings 77U and 77D. A mask 71 has been proposed in which attachment members 73 having upper and lower portions are respectively attached to the left and right ends of the mask main body 72 (see, for example, Patent Document 3).

  The mask 71 can be firmly attached to the attachment member 73 of the fastening strings 77U and 77D by a simple operation of hanging the ends of the fastening strings 77U and 77D around the two slits 75 and 76.

  As still another example of the conventional mask, as shown in FIG. 16, through holes 83 penetrating in the vertical direction are provided in the left and right ends of the mask main body portion 82, and one through hole 83 is tightened. There has been proposed a mask 81 in which the string 84 is inserted and both ends of the tightening string 84 are locked to the length adjuster 85 (see, for example, Patent Document 4).

This mask 81 can be used as a single string overhead type.
And the length adjustment of the fastening string 84 can be easily performed at the portion of the length adjustment tool 85.

Japanese Utility Model Publication No. 57-126258 Japanese Utility Model Publication No. 4-25760 Japanese Utility Model Publication No. 7-25968 JP-A-2005-218

When the mask 51 described in Patent Document 1 is a side hook type in which the fastening string 56 is fastened with a hook or the like through the upper and lower sides of the left and right ears, the fastening string attachment (small piece 53) is small. Since the fastening string 56 acts so as to pinch the ear, there is a disadvantage that the ear hurts when worn (weared) for a long time.
The mask 51 can be used as a single string overhead type, but cannot be used as a double string overhead type because the fastening string 56 is fixed at the small piece 53 portion.

Since the mask described in Patent Document 2 described above bends the bent piece 67 every time the fastening string 68 is adjusted, the bent piece 67 may be cut off.
Further, only one tightening string 68 can be passed through the tightening string passing holes 65 and 66, and when it is made to correspond to the side hook type or the double string overhead type, it is necessary to attach four tightening string attachments.
The mask described in Patent Document 2 cannot be used as a single string overhead type because the tightening string 68 is fixed at the tightening string attaching portion.

  Although the mask 71 described in Patent Document 3 described above can be used as a two-string overhead type and a side hook type, the tightening string is fixed at the portions of the tightening string locking portions 74U and 74D. Cannot be used as an overhead type.

The mask 81 described in Patent Document 4 described above can be used as a single string overhead type.
Moreover, it can be used as a side hook type by inserting two fastening strings through the left and right through-holes 83 separately to form an annular shape.
However, it cannot be used as a two-string overhead type because the end of the strap cannot be locked.

  The present invention has been made to solve the above-mentioned inconveniences, and is a tightening string attachment that can be used as a mask of one string overhead type, two string overhead type, side hook type without changing the mounting position, and The present invention provides a mask that uses the fastener attachment tool.

The present invention provides a tightening strap attachment for attaching a tightening string used when the mask main body is mounted to the mask main body, a main body provided with an insertion hole through which the tightening string is inserted, and the main body An upper locking portion that is provided at the upper end portion and locks an end portion of the tightening string, and a lower locking portion that is provided at the lower end portion of the main body portion and locks the end portion of the tightening string. The upper locking portion and the lower locking portion are provided with a locking plate and a front end of the locking plate toward the rear side of the locking plate, and lock the inserted fastening string. A front side locking groove, and a rear side locking groove that is provided from a rear side end of the locking plate toward the front side of the locking plate and that locks the tightening string to be inserted. front guide portion of the arc-shaped is provided at the front end of the groove, the back-side end portion of the rear side locking groove, the front guide Wherein the rear guide portion arcuate radius greater than the radius of is provided.

  According to this invention, since one fastening string can be attached using the insertion hole, and two fastening strings can be attached using the upper locking portion and the lower locking portion, It can be used as a one-string overhead type, two-string overhead type, or side hook type mask without changing the attachment position of the fastener.

It is the perspective view which looked at one Example of the fastener attachment tool of this invention from the outer side (front side). The fastening line attachment shown in FIG. 1 is a perspective view from the inside (rear side). FIGS. 3A and 3B are diagrams showing the fastening strap attachment shown in FIGS. 1 and 2, wherein FIG. 1A is a plan view, FIG. 2B is a front view, and FIG. 2C is a rear view (back view, bottom view). (A) is a cross-sectional view taken along line 4a-4a in FIG. 3 (a), (b) is a left side view of the fastener attachment, (c) is a cross-sectional view taken along line 4c-4c in FIG. FIG. 4D is a sectional view taken along line 4d-4d in FIG. 3A, and FIG. 4E is an enlarged sectional view of a portion E in FIG. It is a figure which shows one Example of the mask of this invention, (a) is a front view, (b) is the left view which abbreviate | omitted some string. It is explanatory drawing which shows the usage example of the mask shown in FIG. It is a figure which shows the other Example of the mask of this invention, (a) is a front view, (b) is the left view which abbreviate | omitted a part of the fastening string. It is explanatory drawing which shows the usage example of the mask shown in FIG. It is the elements on larger scale which expanded the part of the right side fastener attachment tool of FIG. It is explanatory drawing of the latching protrusion part in an upper side latching | locking part. It is a figure which shows the further another Example of the mask of this invention, (a) is a front view, (b) is the left view which abbreviate | omitted a part of a fastening string. It is explanatory drawing which shows the usage example of the mask shown in FIG. It is a fragmentary perspective view which shows an example of the conventional mask. It is a figure which shows the example of the fastening strap attachment used for the other example of the conventional mask, (a) is a fragmentary perspective view, (b) is the cross section in the use condition by the bb line | wire of Fig.14 (a). FIG. It is a perspective view which shows the other example of the conventional mask. It is a perspective view which shows the further another example of the conventional mask.

Embodiments of the present invention will be described below with reference to the drawings.
In the following description, the top, bottom, left, right, front, back, inside, and outside are the top, bottom, left, right, front, back, inside and outside as viewed from the mask wearer.

  First, an embodiment of a strap attachment according to the present invention will be described.

The fastening strap attachment 21 is for attaching a fastening strap used when the mask main body is mounted to the mask main body, and as shown in FIG. 1, the main body 22 and the upper end ( An upper locking portion (first locking portion) 24U provided at one end) and a lower locking portion (second locking portion) 24D provided at the lower end (other end) of the main body portion 22 I have.
The strap attaching tool 21 is made of plastic (resin) having a predetermined strength, for example, polypropylene, so that it can be attached to the outer surface of the mask main body part by ultrasonic welding or adhesion. The locking portion 24U and the lower locking portion 24D are integrally formed .
Note that the strap attachment 21 is attached to the right end of the mask main body.

The above-described main body portion 22 is formed into a curved and flat quadrangular prism shape having an arcuate front surface and a rear surface that are concave on the front side (right side in FIG. 1) and convex on the rear side (left side in FIG. 1). Yes.
The main body portion 22 is provided with an insertion hole 23 for inserting a tightening string that protrudes in a convex shape on the rear side and penetrates in the vertical direction (axial direction).
And the bottom outer surface 22b (refer FIG. 2) of the main-body part 22 is made into a junction part (joint surface), is convex outside (right side, the front side of the paper surface of FIG. 1), and inside (left side, paper surface of FIG. 1). (Back side) is curved into a concave spherical shape and is formed along the right outer surface of the mask body (so as to be in surface contact).
The insertion hole 23 also penetrates (opens) to the outside (right side, the front side of the paper surface of FIG. 1).

  The above-described upper locking portion 24U includes an upper locking plate 25U that protrudes upward from the upper end outside the main body portion 22, a front locking groove 26F provided in the upper locking plate 25U, and an upper locking plate 25U. The rear side locking groove 26R provided, and one or a plurality of ribs 28 provided on the inner side surface of the upper side locking plate 25U (the back side of the paper surface of FIG. 1) (see FIGS. 2 and 3D) And one or a plurality of locking projections 29 provided on the outer surface of the upper locking plate 25U (the front side of the paper surface of FIG. 1).

The front side locking groove 26F of the upper side locking portion 24U described above has a horizontal line portion provided from the front side end of the upper side locking plate 25U toward the rear side of the upper side locking plate 25U, and the horizontal line portion substantially at the center portion. It is formed as a tumbled T-shaped slit composed of intersecting vertical line portions.
The rear side locking groove 26R of the upper side locking portion 24U includes a horizontal line portion provided from the rear side end of the upper side locking plate 25U toward the front side of the upper side locking plate 25U, and the horizontal line portion is a substantially central portion. It is formed as a rolled-up T-shaped slit consisting of a vertical line portion intersecting with.

An arcuate front guide portion 27F is provided at the front end of the front locking groove 26F provided in the upper locking plate 25U.
Further, an arcuate rear guide portion 27R having a radius larger than the radius of the front guide portion 27F is provided at the rear end portion of the rear side locking groove 26R provided in the upper side locking plate 25U.

And the rib 28 of the upper side locking part 24U is located between the vertical line parts of each locking groove 26F, 26R, and is L-shaped having a part extending in the direction extending from the main body part 22 of the upper side locking plate 25U. Has been.
The locking protrusion 29 of the upper locking portion 24U is positioned between the vertical line portions of the locking grooves 26F and 26R and has a curved shape so as to resist the locking force.

The vertical line portion of the T-shaped slit that forms the front locking groove 26F of the upper locking plate 25U and the T-shaped slit of the upper locking plate 25U that forms the rear locking groove 26R. The vertical line portion, the vertical line portion of the T-shaped slit that forms the front locking groove 26F, and the vertical line portion of the T-shaped slit that forms the rear locking groove 26R of the upper locking plate 25U. The portion of the rib 28 positioned therebetween and the arrangement (arrangement) direction of the locking protrusions 29 of the upper locking plate 25U are parallel to each other in the direction in which the upper locking plate 25U protrudes from the upper end of the main body portion 22. On the other hand, it inclines forward from the lower side toward the upper side.
A horizontal line portion of a T-shaped slit that forms the front locking groove 26F of the upper locking plate 25U and a horizontal line of a T-shaped slit that forms the rear locking groove 26R of the upper locking plate 25U. The portion is located on the same line and is inclined downward from the rear side toward the front side.

  The lower locking portion 24D described above includes a lower locking plate 25D that protrudes downward from the lower end outside of the main body portion 22, a front locking groove 26F provided in the lower locking plate 25D, and a lower side. The rear side locking groove 26R provided in the locking plate 25D and one or a plurality of ribs 28 (FIG. 2 and FIG. 2) provided on the inner surface of the lower side locking plate 25D (the back side of the paper surface of FIG. 1). 3 (d)) and one or a plurality of locking projections 29 provided on the outer surface of the lower locking plate 25D (the front side of the paper surface of FIG. 1).

The front side locking groove 26F of the lower side locking portion 24D described above has a horizontal line portion provided from the front end of the lower side locking plate 25D toward the rear side of the lower side locking plate 25D, and the horizontal line portion is substantially the same. It is formed as a tumbled T-shaped slit composed of a vertical line portion intersecting the central portion.
The rear locking groove 26R of the lower locking portion 24D includes a horizontal line portion provided from the rear end of the lower locking plate 25D toward the front side of the lower locking plate 25D, and the horizontal line portion. It is formed as a tumbled T-shaped slit consisting of a vertical line portion that intersects the substantially central portion.

An arcuate front guide portion 27F is provided at the front end of the front locking groove 26F provided in the lower locking plate 25D.
Further, an arcuate rear guide portion 27R having a radius larger than the radius of the front guide portion 27F is provided at the rear end portion of the rear side locking groove 26R provided in the lower side locking plate 25D.

The rib 28 of the lower locking portion 24D is located between the vertical line portions of the locking grooves 26F and 26R, and has an L shape having a portion extending in a direction extending from the main body portion 22 of the lower locking plate 25D. It is made into a shape.
Further, the locking protrusion 29 of the lower locking portion 24D is positioned between the vertical line portions of the locking grooves 26F and 26R, and has a curved shape so as to resist the locking force.

In addition, the vertical line portion of the T-shaped slit that forms the front locking groove 26F of the lower locking plate 25D and the T-shaped that forms the rear locking groove 26R of the lower locking plate 25D. The vertical line portion of the slit, the vertical line portion of the T-shaped slit that forms the front locking groove 26F of the lower locking plate 25D, and the vertical line of the T-shaped slit that forms the rear locking groove 26R The portion of the rib 28 located between the portion and the arrangement (arrangement) direction of the locking projections 29 of the lower locking plate 25D is parallel to the lower locking plate 25D from the lower end of the main body portion 22. It is inclined forward from the upper side to the lower side with respect to the protruding direction.
Then, a horizontal line portion of a T-shaped slit that forms the front locking groove 26F of the lower locking plate 25D and a T-shaped slit that forms the rear locking groove 26R of the lower locking plate 25D. Is located on the same line and is inclined upward from the rear side to the front side.

  The fastening device attached to the left end of the mask body is formed (configured) in a shape that is obtained by inverting the fastening device 21 upside down or symmetrically with the fastening device 21, so The configuration of the string attachment tool will be described below with parentheses attached to the reference numerals of the string attachment tool 21 at the same part (or corresponding part) as the string attachment tool 21.

The fastener attachment tool attached to the left end of the mask main body includes a main body (22) and an upper locking portion (first locking portion) provided at the upper end (one end) of the main body (22). (24U) and a lower locking portion (second locking portion) (24D) provided at the lower end (the other end) of the main body portion (22).
This fastener attachment is made of a plastic (resin) having a predetermined strength, for example, polypropylene, so that it can be attached to the outer surface of the mask main body by ultrasonic welding or adhesion, and the main body (22). The upper locking portion (24U) and the lower locking portion (24D) are integrally formed.

The above-described main body (22) is formed in a curved and flat quadrangular prism shape having an arcuate front surface and a rear surface that are concave on the front side and convex on the back side.
The main body (22) is provided with an insertion hole (23) for inserting a fastening string, which is convexly curved rearward and penetrates in the vertical direction (axial direction).
The bottom outer surface of the main body portion (22) is a joint portion (joint surface), and is curved into a spherical shape having a convex shape on the outer side (left side) and a concave shape on the inner side (right side). It is formed so as to be along the outer surface (so that surface contact can be made).
The insertion hole (23) also penetrates (opens) to the outside (left side).

  The upper locking portion (24U) described above includes an upper locking plate (25U) protruding upward from the upper end outside of the main body portion (22) and a front locking groove (25U) provided on the upper locking plate (25U). 26F), a rear locking groove (26R) provided on the upper locking plate (25U), and one or more ribs (28) provided on the inner surface of the upper locking plate (25U) And one or more locking projections (29) provided on the outer surface of the upper locking plate (25U).

The front side locking groove (26F) of the upper side locking part (24U) has a horizontal line portion provided from the front side end of the upper side locking plate (25U) toward the rear side of the upper side locking plate (25U), The horizontal line portion is formed as a rolled T-shaped slit composed of a vertical line portion that substantially intersects the central portion.
Further, the rear side locking groove (26R) of the upper side locking portion (24U) has a horizontal line portion provided from the rear side end of the upper side locking plate (25U) toward the front side of the upper side locking plate (25U). The horizontal line portion is formed as a rolled-up T-shaped slit composed of a vertical line portion substantially intersecting the central portion.

An arcuate front guide part (27F) is provided at the front end of the front locking groove (26F) provided in the upper locking plate (25U).
Further, an arcuate rear guide portion (27R) having a larger radius than the radius of the front guide portion (27F) is provided at the rear end portion of the rear side lock groove (26R) provided in the upper lock plate (25U). Is provided.

The rib (28) of the upper locking portion (24U) is positioned between the vertical line portions of the locking grooves (26F, 26R) and extends from the main body portion (22) of the upper locking plate (25U). It is L-shaped with a portion extending in the direction.
Further, the locking protrusion (29) of the upper locking portion (24U) is located between the vertical line portions of the locking grooves (26F, 26R) and is curved to resist the locking force. ing.

The vertical line portion of the T-shaped slit that forms the front locking groove (26F) of the upper locking plate (25U) and the rear locking groove (26R) of the upper locking plate (25U). The vertical line portion of the T-shaped slit to be formed and the vertical line portion of the T-shaped slit and the rear locking groove (26R) forming the front locking groove (26F) of the upper locking plate (25U). The portion of the rib (28) positioned between the vertical line portion of the T-shaped slit that forms and the arrangement (arrangement) direction of the locking protrusion (29) of the upper locking plate (25U) is It is parallel and is inclined forward from the lower side to the upper side with respect to the direction in which the upper locking plate (25U) protrudes from the upper end of the main body (22).
Then, a horizontal line portion of a T-shaped slit forming the front locking groove (26F) of the upper locking plate (25U) and a rear locking groove (26R) of the upper locking plate (25U) are formed. The horizontal line portion of the T-shaped slit is located on the same line and is inclined downward from the rear side toward the front side.

  The lower locking portion (24D) described above includes a lower locking plate (25D) protruding downward from the lower end outside of the main body portion (22), and a front side provided on the lower locking plate (25D). One or more locking grooves (26F), a rear locking groove (26R) provided in the lower locking plate (25D), and one or more provided on the inner surface of the lower locking plate (25D) The rib (28) and one or more locking projections (29) provided on the outer surface of the lower locking plate (25D).

The front locking groove (26F) of the lower locking portion (24D) is a horizontal line provided from the front end of the lower locking plate (25D) toward the rear side of the lower locking plate (25D). It is formed as a rolled-up T-shaped slit composed of a portion and a vertical line portion where the horizontal line portion substantially intersects the central portion.
The rear locking groove (26R) of the lower locking portion (24D) is provided from the rear end of the lower locking plate (25D) toward the front side of the lower locking plate (25D). It is formed as a tumbled T-shaped slit composed of a horizontal line part and a vertical line part that substantially intersects the central part.

An arcuate front guide portion (27F) is provided at the front end of the front locking groove (26F) provided in the lower locking plate (25D).
In addition, an arcuate rear guide portion 27R having a radius larger than the radius of the front guide portion (27F) is provided at the rear end portion of the rear side locking groove (26R) provided in the lower side locking plate (25D). Is provided.

The rib (28) of the lower locking portion (24D) is located between the vertical line portions of the locking grooves (26F, 26R), and the main body portion (22) of the lower locking plate (25D). It is made into the L shape which has a part extended in the direction extended from.
The locking protrusion (29) of the lower locking portion (24D) is located between the vertical line portions of the locking grooves (26F, 26R) and has a curved shape so as to resist the locking force. Has been.

In addition, the vertical line part of the T-shaped slit that forms the front side locking groove (26F) of the lower side locking plate (25D) and the rear side locking groove (26R) of the lower side locking plate (25D). ) Forming a vertical line portion of a T-shaped slit and a vertical line portion of a T-shaped slit forming a front locking groove (26F) and a rear locking groove of the lower locking plate (25D). Arrangement (arrangement) of the locking projections (29) of the rib (28) located between the vertical line portion of the T-shaped slit forming (26R) and the lower locking plate (25D) The direction is parallel and is inclined forward from the upper side to the lower side with respect to the direction in which the lower locking plate 25D protrudes from the lower end of the main body portion (22).
Then, the horizontal line portion of the T-shaped slit forming the front locking groove (26F) of the lower locking plate (25D) and the rear locking groove (26R) of the lower locking plate (25D). Is located on the same line as the T-shaped slit forming the slit, and is inclined upward from the rear side to the front side.

  An embodiment of the mask of the present invention that utilizes (uses) the above-described fastener strap fitting will be described with reference to the drawings.

  FIG. 5 is a view showing an embodiment of the mask of the present invention, and FIG. 6 is an explanatory view showing an example of use of the mask shown in FIG. 5. The same reference numerals are given to the same or corresponding parts as in FIGS. The description is omitted.

  The mask 1 shown in FIGS. 5 and 6 includes a mask body 11 formed in a cup shape, left and right fastening strap attachments 21L and 21R attached to the left and right ends of the mask body 11, and The left and right fastening strap attachments 21L and 21R are composed of one fastening strap 31 and a length adjusting tool 41 for adjusting the effective length of the fastening strap 31.

The mask main body 11 described above is composed of, for example, a frame body made of plastic (resin) so as to cover a person's nose and mouth, and a filter portion attached to the frame body.
The filter part is provided on the front covering portion covering the front side of the frame body, and on the outer periphery of the front covering portion. The face cloth is in contact with the outer periphery of the human nose and mouth and holds the frame body. It consists of and.
The front covering portion has, for example, a multilayer structure, and is configured such that the left and right fastening strap attachments 21L and 21R can be welded or bonded.

The above-described right-side strap attaching tool 21R is attached to the right end of the mask main body 11 with the same configuration as the tightening-string attaching device 21 described above.
Further, the left side strap attachment tool 21L has the same configuration as the fastening cord attachment tool formed in a shape that is vertically inverted from the above-described fastening cord attachment tool 21 or symmetrically with the fastening cord attachment tool 21. It is attached to the left end of the mask body 11.

The above-described fastening string 31 is formed of an elastic rubber band or the like, and has a predetermined length, a predetermined thickness, and a predetermined width.
Then, it passes through the insertion hole 23 of the left side strap attachment tool 21L from the upper side to the lower side so as to pass through one end side of the fastening cord 31 and tightens from the upper side to the lower side to the insertion hole 23 of the right side strap attachment tool 21R. A length adjuster 41 capable of adjusting the length of the annular portion is attached to the end of the tightened string 31 that is inserted through the other end of the string 31 and aligned.
Therefore, by operating the length adjuster 41 and moving it relative to the tightening string 31, the length of the annular portion of the tightening string 31 (the effective length of the tightening string 31) can be adjusted.

In FIG. 5, the length adjuster 41 is disposed (attached) on the lower side of the mask 1, but the length adjuster 41 may be disposed on the upper side of the mask 1.
Thus, when the length adjusting tool 41 is arranged on the upper side of the mask 1, one end side of the tightening string 31 penetrates the one end side of the tightening string 31 from the lower side to the upper side to the insertion hole 23 of the left tightening string attaching tool 21L. The other end side of the tightening string 31 is inserted through the insertion hole 23 of the right tightening string attachment 21R so as to penetrate from the lower side to the upper side, and the length is adjusted at the end of the aligned tightening string 31. A tool 41 is attached.

  Next, an example of wearing the mask 1 will be described.

  First, the length adjuster 41 is operated to adjust the length of the annular portion of the tightening string 31 (effective length of the tightening string 31) to an appropriate length.

  And after inserting a head in the part of the string 31 located under the mask main-body part 11 and mounting | wearing the mask main-body part 11 so that a nose and a mouth may be covered, under the mask main-body part 11 The portion of the fastening string 31 that is positioned is placed along the rear lower part of the head.

  And the mask 1 is mounted | worn as a single string overhead type, as shown in FIG. 6, by pulling up the part of the fastening string 31 located above the mask main-body part 11, and making it follow the back upper part of a head.

  When the tightening force of the tightening string 31 is strong or weak with the mask 1 mounted in this manner, the length adjuster 41 is operated and moved with respect to the tightening string 31, and the annular portion of the tightening string 31 is moved. The desired tightening force is set by adjusting the length of the desired length.

  FIG. 7 is a view showing another embodiment of the mask of the present invention, FIG. 8 is an explanatory view showing an example of use of the mask shown in FIG. 7, and FIG. 9 is an enlarged view of a portion of the right side strap attachment tool of FIG. An enlarged view and FIG. 10 are explanatory views of a locking projection portion in the upper locking portion. The same reference numerals are given to the same or corresponding portions as in FIGS.

The mask 1A shown in FIGS. 7 and 8 includes a mask body 11 formed in a cup shape, left and right fastening strap attachments 21L and 21R attached to the left and right ends of the mask body 11, and The left and right fastening straps 21L and 21R are composed of two fastening straps, that is, a left fastening strap 31L and a right fastening strap 31R, and a hook 42 attached to the right fastening strap 31R.
The hook 42 may be attached to the left side strap 31L.

One end (upper end) of the left side strap 31L described above is locked to the upper side locking portion 24U of the left side strap binding tool 21L, and the other end (lower end) is connected to the lower side locking portion 24D of the left side strap binding tool 21L. It is locked.
Further, one end (upper end) of the right side strap 31R is locked to the upper side locking portion 24U of the right side strap binding tool 21R, and the other end (lower end) is connected to the lower side locking portion 24D of the right side strap binding tool 21R. It is locked.

  Next, an example of locking to the lower locking portions 24U and 24D on the upper end portions of the left and right fastening strings 31L and 31R will be described.

  First, the upper end portions of the left and right tightening straps 31L and 31R are inserted into the upper side of the upper locking portion 24U from the rear side, and the first end vicinity portions 32 of the left and right tightening straps 31L and 31R are inserted into the front guide portion. Inserted into the horizontal line portion of the front locking groove 26F from between 27F and 27F, and along the vertical line portion of the front locking groove 26F, as shown in FIGS. 9 and 10, the left and right fastening straps 31L, 31R The end portion is led out to the outside of the upper locking portion 24U.

  Then, the second end vicinity portion 33 that is closer to the end portion than the first end portion vicinity portion 32 of the left and right fastening straps 31L, 31R is inserted into the rear locking groove between the rear guide portions 27R, 27R. 9R, and as shown in FIGS. 9 and 10, along the vertical line portion of the rear locking groove 26F, the end portions of the left and right fastening straps 31L, 31R are connected to the upper locking portion 24U. After being led inward, it is led out behind the upper locking portion 24U.

  In this way, the first end portion vicinity portion 32 is engaged with the vertical line portion of the front side locking groove 26F, and the second end portion vicinity portion 33 is engaged with the vertical line portion of the rear side locking groove 26R. Then, the third end portion vicinity portion 34 between the first end portion vicinity portion 32 and the second end portion vicinity portion 33 faces the locking protrusion 29.

  In this state, when the left and right fastening straps 31L and 31R are pulled rearward, the fourth end portion vicinity portion 35 that is farther from the end portion than the first end portion vicinity portion 32 slides on the rib 28 and moves. As a result, the third end portion vicinity portion 34 engages with the locking protrusion 29 and the first end portion vicinity portion 32 engages with the front side locking groove 26F, whereby the left and right fastening strings 31L. , 31R are locked to the upper locking portion 24U.

  When removing the upper end portions of the left and right fastening straps 31L and 31R from the upper locking portion 24U, the upper end portions of the left and right fastening straps 31L and 31R are connected to the upper engagement portion by performing the above-described procedure in reverse. It can be removed from the stop 24U.

Note that the left and right fastening straps 31L and 31R are attached to the lower locking portion 24D of the lower end portion of the left and right fastening straps 31L and 31R, and the left and right fastening straps 31L and 31R are removed from the lower locking portion 24D of the lower end portion. By performing the same as attaching the upper end portions of the left and right fastening straps 31L and 31R to the upper locking portion 24U and removing the upper end portions of the left and right fastening straps 31L and 31R from the upper locking portion 24U. The lower end portions of the left and right fastening straps 31L and 31R can be attached to the lower locking portion 24D, and the lower end portions of the left and right fastening straps 31L and 31R can be detached from the lower locking portion 24D.

  Then, the mask 1A has a front side locking portion 24U, 24D that constitutes the lower side locking portions 24U, 24D on the left and right side binding straps 21L, 21R on the left and right side binding straps 31L, 31R. After engaging with the vertical line portion of the groove 26F, the left and right fastening straps 31L, 31R end up to the outside of the upper and lower locking portions 24U, 24D. ) Is convenient.

  Next, an example of mounting the mask 1A will be described.

  First, after the mask body 11 is mounted so as to cover the nose and mouth, the left and right fastening straps 31L and 31R are routed along the upper and lower sides of the ear, and the hook 42 is hooked on the left fastening strap 31L. Thus, as shown in FIG. 8, the mask 1A is attached as a side hook type.

  With the mask 1A mounted in this manner, the tightening force of the left and right tightening straps 31L and 31R is adjusted, and the end portions of the left and right tightening straps 31L and 31R are set to the upper and lower locking portions 24U and 24D. What is necessary is just to lock.

  As an example of the adjustment of the tightening force of the left and right tightening strings 31L and 31R, an operation when the tightening force of the left and right tightening strings 31L and 31R is weak will be described. End portions of the left and right tightening strings 31L and 31R After adjusting the tightening force by pulling, as described above, the end portions of the left and right tightening straps 31L, 31R may be locked to the upper and lower locking portions 24U, 24D.

  FIG. 11 is a view showing still another embodiment of the mask of the present invention. FIG. 12 is an explanatory view showing an example of use of the mask shown in FIG. 11. The same reference numerals are given to the same or corresponding parts as in FIGS. A description thereof will be omitted.

  The mask 1B shown in FIGS. 11 and 12 includes a mask main body 11 formed in a cup shape, left and right fastening strap attachments 21L and 21R attached to the left and right ends of the mask main body 11, and The left and right fastening strap attachments 21L and 21R are composed of two fastening straps, that is, an upper fastening strap 31U and a lower fastening strap 31D.

One end (left end) of the upper strap 31U described above is locked to the upper locking portion 24U of the left strap binding fixture 21L, and the other end (right end) is engaged to the upper locking portion 24U of the right clamp strap fixture 21R. It has been stopped.
Further, one end (left end) of the lower side strap 31D is locked to the lower side locking portion 24D of the left side strap binding tool 21L, and the other end (right end) thereof is the lower side locking portion of the right side strap binding tool 21R. It is locked to 24D.

  Above, on the left and right ends of the lower straps 31U, 31D, the mounting method to the lower locking portions 24U, 24D, the upper, left and right ends of the lower straps 31U, 31D Since the method of removing from the stop portions 24U and 24D is the same as the embodiment of the mask 1A, the description is omitted.

  Next, an example of wearing the mask 1B will be described.

  First, the head is inserted into the lower fastening strap 31D located on the lower side of the mask main body 11, and after the mask main body 11 is mounted so as to cover the nose and mouth, the lower fastening strap 31D is attached to the head. Along the rear lower part of.

  Then, the upper strap 31U positioned on the upper side of the mask body 11 is placed along the rear upper part of the head, so that the mask 1B can be mounted as a two-string overhead type as shown in FIG.

  After adjusting the tightening force of the upper and lower straps 31U and 31D with the mask 1B mounted in this manner, the end portions of the upper and lower straps 31U and 31D are moved upward and downward as described above. What is necessary is just to make it latch to the side latching | locking parts 24U and 24D.

As described above, according to the present invention, the left and right fastening straps 21L and 21R are provided with the insertion hole 23, the upper locking portion 24U and the lower locking portion 24D. It can be used as a one-string overhead type, two-string overhead type, or side hook type mask without changing the mounting positions of the fixtures 21L and 21R.
When the single string overhead type mask 1 is used, or when the double string overhead type mask 1B is used, the masks 1 and 1B can be suspended and carried around the neck or the like.
Further, the upper locking portion 24U (front and rear locking grooves 26F and 26R) faces rearward and upward, and the lower locking portion 24D (front and rear locking grooves 26F and 26R) faces rearward and lower. Therefore, the masks 1, 1 </ b> A, 1 </ b> B are placed in a state in which the fastening strings 31, 31 </ b> L, 31 </ b> R, 31 </ b> U, 31 </ b> D do not pinch the ears by expanding the fastening strings 31, 31 </ b> L, 31 </ b> R, 31 </ b> U, 31 </ b> D vertically. You can keep wearing it in a stable state.

Further, since the radius of the rear guide portion 27R is larger than the radius of the front guide portion 27F, when the fastening straps 31L, 31R, 31U, 31D are locked to the upper and lower locking portions 24U, 24D, The end portion vicinity (second end portion vicinity portion 33) of each of the fastening strings 31L, 31R, 31U, 31D to be finally locked can be easily locked.
Further, since the ribs 28 are provided on the upper and lower locking plates 25U and 25D, the upper and lower locking plates 25U and 25D can be reinforced by the ribs 28, and the straps 31L, 31R, 31U and 31D are moved. The contact resistance at the time decreases.
In addition, since the locking protrusions 29 are provided on the upper and lower locking plates 25U and 25D, the fastening strings 31L, 31R, 31U and 31D can be reliably locked.

In the above-described embodiment, an example in which the main body portion 22 is curved has been described, but the main body portion may be straight in the vertical direction.
In addition, although various fastening patterns of the tightening string have been shown, the number of the tightening strings is two, and one end (left end) of the first tightening string is locked to the upper locking portion of the left tightening string attaching tool. The other end (right end) of the first lacing strap is locked to the lower locking portion of the right lacing fixture, and one end (left end) of the second lacing strap is locked to the lower locking portion of the left lacing fixture. It is good also as a mask which is made to latch and the other end (right end) of the 2nd string is latched by the upper latch part of the right string fastener.

DESCRIPTION OF SYMBOLS 1 Mask 1A Mask 1B Mask 11 Mask main-body part 21 Tightening string attachment 21L Left-side fastening string attachment 21R Right-side fastening string attachment 22 Main-body part 22b Bottom outer surface (joint part, joining surface)
23 insertion hole 24U upper side locking part (first locking part)
24D Lower side locking part (second locking part)
25U Upper side locking plate 25D Lower side locking plate 26F Front side locking groove 26R Rear side locking groove 27F Front side guide part 27R Rear side guide part 28 Rib 29 Locking protrusion 31 Tightening string 31L Left side fastening string 31R Right side fastening string 31U Upper side Fastening strap 31D Lower fastening strap 32 First end portion vicinity 33 Second end portion vicinity 34 Third end portion vicinity 35 Fourth end portion vicinity 41 Length adjuster 42 Hook

Claims (3)

In the tightening strap attachment for attaching the tightening string used when mounting the mask main body to the mask main body,
A main body provided with an insertion hole for inserting the fastening string;
An upper locking portion provided at an upper end portion of the main body portion and locking an end portion of the tightening string;
A lower locking portion that is provided at a lower end portion of the main body portion and locks an end portion of the tightening string;
The upper locking portion and the lower locking portion are
A locking plate;
A front locking groove that is provided from the front end of the locking plate toward the rear side of the locking plate, and locks the fastening string to be inserted;
A rear side locking groove that is provided from the rear side end of the locking plate toward the front side of the locking plate, and locks the tightening string to be inserted;
An arcuate front guide portion is provided at the front end of the front locking groove,
An arcuate rear guide portion having a radius larger than the radius of the front guide portion is provided at a rear end portion of the rear locking groove.
A fastener attachment characterized by that. In the fastener attachment according to claim 1,
On the outer surface of the locking plate between the front locking groove and the rear locking groove, a rib that intersects with the fastening string is provided.
A fastener attachment characterized by that. The fastening strap attachment according to claim 1 or 2 is integrally attached to a left end portion of the mask main body portion and a right end portion of the mask main body portion,
A mask characterized by that.

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