0001]The present invention relates to a mask having a fastener.
BACKGROUND
[0002]Conventionally, the mask having a locking device for locking the Shimehimo are known. For example, Patent Document 1, a horizontally long rectangular shape, the opposite ends in the longitudinal direction, the locking tool in which a pair of hook portions located above and below (upper hook and the lower hook portion) is arranged mask having is disclosed. Upper and lower hook portion of the fastener has a locking hole in which the upper and lower portions of the clamping strap is locked, and a guide groove for guiding them to the locking hole.
CITATION
Patent Document
[0003]
Patent Document 1: JP 2015-93036 JP
[0004]
　According to a mask having a locking tool disclosed in Patent Document 1, a locking device arranged on the rear side of the wearer's head, the locking hole in the Shimehimo guided from the guide groove of the upper and lower hook portions the upper and lower portions by causing locked respectively engaged, since the upper and lower portions of the clamping strap is bifurcated state is maintained together, it is possible to fit the face seal of the mask body on the face of the wearer.
[0005]
　However, since it is only locked rubber string-like tightening strap down the hook portion, the worn state of the mask, in such as when the wearer moves the mouth, slides downward clamping straps in the upper and lower hook portions Te, which may result in misaligned. Meanwhile, in order to prevent such positional deviation, when larger tensile force of the upper portion of the lacing relatively feel discomfort or pain rubbing the upper ears of the wearer contacts the said upper part I fear there is. Further, the guide channel, tightening strap ingress, because it is exited possible size, in a state where the clamping strap is locked in the locking hole of the upper and lower hook portions, pulling Shimehimo to the length adjustment when the, there is a possibility that exits to the outside through the guide groove.
Summary of the Invention
Problems that the Invention is to Solve
[0006]
　The present invention is an improvement of prior invention, in the worn state, the locked state of the clamping strap is maintained, and has an object of providing a mask having a locking tool that is capable of suppressing the positional deviation .
Means for Solving the Problems
[0007]
　The present invention has a vertical and horizontal direction, and first and second side edges extending in the transverse direction, shaped oblong thin plate and first and second end edges extending in the longitudinal direction locking tool on the mask with a.
[0008]
　In the mask having a locking device according to the present invention, fastener includes a first locking portion for detachably engaging one of the clamping strap of the mask, the said first locking portion located at a second end edge, and a second locking portion having an insertion hole for previously inserted the other lacing of the mask, the first locking portion from said first side edge and extending guide groove, and a first locking hole leading to said guide groove, said second engaging portion has a smaller second locking hole profile than continuous with the insertion hole, the first said one locking hole second locking holes have mutually facing in opposite directions in the lateral direction.
Effect of the invention
[0009]
　In the mask having a locking device according to at least one embodiment of the present invention, fastener includes a guide groove in which the first locking portion extends from the first side edge, a first locking hole leading into the guide groove has a second locking portion has a smaller second locking holes of contiguous outer than the insertion hole, the first locking hole and the second locking hole is mutually opposite directions in the lateral direction since facing to, in the worn state of the mask, causes closely the mask body to the face clamping strap exerts the required tightening strength, without tightening strap out of the locking tool, its position is shifted up and down it is possible to prevent the.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010]
　The drawings illustrate specific embodiments of the present invention, not only essential structure of the invention, including selective and preferred embodiments.
First the mask having a locking tool in the embodiment, rear perspective view of the mask in a state in which to engage with the one of lacing the fastener of FIG. 1 the present invention.
[2] a plan view of the locking tool.
[3] were ligated to each other a pair of lacing the fastener, side view of wearing state of the mask.
[Figure 4] were ligated to each other a pair of drawstring by fastener, rear view of the wear state of the mask.
[5] a partially enlarged view of a region surrounded by a V line in FIG. 4.
[FIG. 6] (a) Figure in a state in which the tightening cord using band elastic was locked to the first locking hole, (b) cross-sectional view of a clamping strap using a strip elastic member, (c) cord-like Figure in a state in which the clamping strap using an elastic body to engage with the first locking hole, cross-sectional view of a clamping strap using (d) is string-like elastic member.
[7] a plan view of a locking tool in an example modification.
[8] a plan view of the locking device in the second embodiment.
DESCRIPTION OF THE INVENTION
[0011]
　The following embodiments are shown in FIGS. 1-7, relates to a mask 1 having a fastener 10, not only essential structure of the invention, including selective and preferred configuration.
[0012]

　Referring to FIGS. 1-3, the mask 1, and an annular clamping strap 3, 4 extending from opposite side edges of the mask body 2 and the mask body 2, locking member 10 is a pair It is used to couple one another at the back of the clamping strap 3 and 4 of the wearer's head. The mask body 2 is provided with a coating 5 which is Fugata into a cup shape to define an inner space 7, the face-contact portion that is joined to the rear side of the outer peripheral edge of the covering portion 5 (the face-contact pad) 6 having. Shimehimo 3 and 4, both end portions are fixed to both side edges of the mask body 2 through the buckle 8, having the worn state, the upper portion 3A that branches vertically, 4A and the lower part 3B, and 4B.
[0013]
　The Shimehimo 3 and 4, can be used a strip elastic member having a required thickness of such string-like elastic member or a flat rubber made of strand-like rubber string or the like. In the worn state of the mask 1, to the extent that the required fit and sealing property is exhibited, to the mask body 2 may be formed of only the coating unit 5, the coating unit 5, without molding the cup-shaped it may be obtained by three-dimensionally formed by folding a plurality of cloth or non-woven fabric in plan view or their pleated shape having a filter function.
[0014]
　Referring to FIG. 2, locking member 10, the longitudinal direction Y and the transverse direction X and the longitudinal direction Y dimension of the transverse center line Q and a transverse direction X dimension bisects the bisecting longitudinal center line P a horizontally long thin plate having bets, and first and second side edges 11, 12 extending in the transverse direction X, and first and second end edges 13, 14 extending in the longitudinal direction Y. The first and second side edges 11 and 12 extend in straight in the transverse direction X, the first and second edges 13 and 14, have a shape which is convexly curved toward the outside in the transverse direction X and, corner side edges 11, 12 and end edges 13 and 14 cross each other has a song-like. The curvature of the second edge 14 has a shape curved it from greater, the larger arcuate first edge 13. However, as long as the effects of the later of the present invention, the curvature of the first and second edges 13 and 14 may be the same, the curvature of the first edge 13 than the second edge 14 It may be larger, but not their curvatures to be limited to the embodiments illustrated.
[0015]
　Fastener 10 includes a first locking portion 20 for locking the one of the clamping strap 3 of the mask 1 is positioned at the second end edge 14 of the first locking portion 20, the mask 1 other further comprising a second locking portion 30 having an insertion hole 31 for advance through a Shimehimo 4. The first locking portion 20 has a guide groove 21 extending from the first side edge 11 inwardly, and a first locking hole 22 leading to the guide groove.
[0016]
　The guide groove 21 of the first locking portion 20 includes a music-like portion 21a extending curved toward the first side edge 11 to the first edge 13, across the center line so as to be continuous from the end of Kyokujo site 21a Q and a straight portion 21b extending straight in the transverse direction X along. Song-like portion 21a of the guide groove 21 has a gradually narrower toward inward, has become the most narrow in the vicinity of the boundary between Jikajo site 21b. Width W1 of Jikajo site 21b is the same as the width dimension of the end of Kyokujo sites 21a, it is substantially constant. Width degree or guide grooves 21 of the curve of Kyokujo site 21a can be appropriately changed by the width dimension of the size and Shimehimo 3,4 of fastener 10 or the like. In this embodiment, the widest portion of the guide groove 21, i.e., W5 (the width of the first side edge 11 side of the Kyokujo site 21a) the width of the spacing portion separating the first side edge 11 is a straight at least 3 times the width W1 of the Jo site 21b.
[0017]
　The second locking portion 30 further has a cut portion 33 which communicates with the insertion hole 31 extending from the second side edge 12 inwardly. Cut unit 33, the width becomes narrower toward the second side edge 12 side inward, are curved slightly to the second edge 14 side in the insertion hole 31 side. Insertion hole 31 is communicated with the second locking hole 32 through the neck 34 in the second edge 14 side. The second locking hole 32 is a circular, its diameter is smaller than the insertion hole 31, and is approximately the same size as the first locking hole 22. First and second locking holes 22 and 32, be one having the extent that Shimehimo 3,4 is locked in an elastically deformed state, oval, triangular, various known shapes such as a polygon it may be. Further, the insertion hole 31 even, as long as having a size Shimehimo 4 is previously inserted, can be adopted oval, triangular, various known shapes such as a polygon.
[0018]
　The width dimension W2 of the neck 34 is smaller than the diameter of the second locking hole 32 is substantially the same as the width W1 of the straight portions 21b of the guide groove 21 of the engaging portion 20. The width W2 of the width W1 and the neck 34 of Jikajo site 21b, smaller than the diameter of the clamping strap 3 and 4 consisting of width or string-like elastic member of lacing 3,4 made of a strip-shaped elastic body , to the extent that Shimehimo 3,4 can pass towards the first and second locking holes 22 and 32 while being elastically deformed it is the size.
[0019]
　The first locking hole 22 of the first locking portion 20 is a circular small hole communicating with Jikajo site 21b, the diameter of which is larger than the width W1 of Jikajo site 21b. The diameter of the second locking hole 32 is substantially the same as the first locking hole 22, the first locking hole 22 and the second locking hole 32, along a transverse center line Q, horizontal They are mutually oriented in opposite directions in the direction. Here, "the first locking hole 22 and the second and the locking hole 32 is oriented in the transverse direction X in opposite direction", in the first and second locking portions 20 and 30, first and the second locking hole width than 22,32 narrow portion (first Jikajo portion 21b in the engaging portion 20, in the second locking portion 30 and neck 34) from the first and second locking holes 22 means that the direction vector F1, F2 towards 32 mutually exclusive in the transverse direction X. Thus, instead of the first locking hole 22 and the second locking hole 32 and is on the cross center line Q, when positioned offset to the first or second side edge 11, 12 side and the guide grooves 21 and / or even be different from the manner in which the shape of the neck 34 is shown, as long as the direction vector F1, F2 and the first locking hole 22 for the second locking hole 32 is reciprocal, the first locking hole 22 and it can be said that conflicting to each other in the transverse direction X and the second locking hole 32. Thus, for example, the guide groove 21 of the first locking portion 20 does not have a Kyokujo portions 21a, straight line extending from the first side edge 11 is inclined with respect to a longitudinal center line P until the first locking hole 22 it may be, cut 33 of the second locking portion 30 may be a straight line extending toward the longitudinal center line P from the second side edge 12 to the insertion hole 31.
[0020]
　One lacing 4 is previously inserted into the insertion hole 31 of the second locking portion 30 at the time of manufacture of the mask 1. Thus, by pre Shimehimo 4 is inserted into the insertion hole 31, when the retrieval of the mask 1 from the manufacturing process and individual packaging bag, never fastener 10 is separated from the mask 1, prior to use in opening, there is no fear that you lose the fastener 10. Referring to FIGS. 4 and 5, will be described. Worn operation of the mask 1, first, the wearer of the face-contact portion 6 of the mask body 2 I is addressed to the face, with one hand while maintaining such a state Shimehimo 4 grips the fastener 10 which is inserted pulls the back side of the head, gripping and pulling the lacing 3 with the other hand to the rear side of the head. Then, pulling to induce and to Shimehimo 3 to the first locking hole 22 of the guide groove 21 of the first locking portion 20 as a guide, with engaged to the first locking hole 22, the insertion hole 31 an insertion has been Shimehimo 4 to the second edge 14 side is moved so as to slide in the neck 34 engaged with the second locking hole 32 in. By the guide groove 21 is formed on the first locking portion 20, it is possible to easily move the Shimehimo 3 to the first locking hole 22, also a through hole 31 in the second locking portion 30 by positioning narrow neck 34 between the second locking hole 32, it can be moved easily to the second locking hole 32 by simply sliding the tightening strap 4 therealong, wear user can easily perform a series of operations without visually directly. Shimehimo 3,4, respectively, by being folded back is locked to the first and second locking holes 22 and 32, the upper portion 3A, 4A and the lower portion 3B, is branched into a 4B. Thus, by branching the annular clamping strap 3 and 4 in the vertical, the upper portion 3A, by pulling up to hooking the 4A on the upper side of the ear portion, subjected to stably ear the Shimehimo 3,4 it is possible to turn.
[0021]
　For example, the direction vector F1, F2 of the first locking hole 22 and / or the second locking hole 32, when going in the longitudinal direction Y may contact the mask body 2 by pulling force of Shimehimo 3,4 facial without force is enough action to try to, there is a possibility that the mask body 2 falls deviated from the face during wear. In the present embodiment, the first locking hole 22 and the second locking hole 32, since it is mutually facing to the opposite directions in the lateral direction X, and if lacing 3,4 via the fastener 10 There can be each other pulling laterally X, exert the required clamping strength.
[0022]
　6 (a) is diagram in a state in which the Shimehimo 3 using a strip elastic member to engage with the first locking hole 22, FIG. 6 (b), the cross-section of Shimehimo 3 using a strip elastic member FIG, tightening FIG. 6 (c), the Shimehimo 3 using string-like elastic body diagram in a state in which to engage with the second locking hole 22, FIG. 6 (d) using the string-like elastic body it is a cross-sectional view of a string 3. FIG 6 (a) ~ (d) are the first locking hole 22 is shown a state in which locking the Shimehimo 3, in the present embodiment, the first locking hole 22 and the second locking hole since 32 is the same shape and size, the locking aspect of the tightening cord 4 in the second locking hole 32 are the same.
[0023]
　FIG. 6 (a), the (b), the in the case of using a strip elastic flat rubber or the like having a predetermined width R as Shimehimo 3 (Shimehimo 4 same), the first locking hole 22 inner circumference length L1 of is smaller than the width R1 of Shimehimo 3. During wearing of the mask 1, for locking the Shimehimo 3 in the first engaging portion 20 moves toward the guiding guide groove 21 from the first side edge 11 side to the first locking hole 22. At this time, are arranged in a state where tightening cord 3 made of flat rubber in the first locking hole 22 is rounded and, since the width dimension R1 is larger than the inner peripheral length L1, a portion thereof is elastically deformed We are entering the straight portion 21b Te. Width dimension R1 of Shimehimo 3 when the inner perimeter L1 smaller than the first locking hole 22, the worn state, which is perpendicular longitudinal be positioned with Shimehimo 3 rounded direction (to the plane ), but there is a possibility that moving to, since a portion thereof greater than the inner peripheral length L1 is the width dimension R1 is entering the straight portion 21b, such movement is restricted.
[0024]
　FIG. 6 (c), the referring to (d), in case of using a string-like elastic body such as a strand-like string rubber as Shimehimo 3 (Shimehimo 4 same), the inner periphery of the first locking hole 22 long L1 is smaller than the outer peripheral dimension of the circular cross section of Shimehimo 3 (outer perimeter) R2. Accordingly, in a state of arranging the Shimehimo 3 to the first locking hole 22 to wear a mask 1, a portion of Shimehimo 3 enters the straight portion 21b is elastically deformed, FIGS. 6 (a) Like the embodiment of the movement in the longitudinal direction of the Shimehimo 3 is restricted. Thus, Shimehimo 3,4 cases in its width dimension, which is formed of a strip-shaped elastic body such as a flat rubber R1, its outer dimensions when it is formed from a string-like elastic body such as rubber string R2 but, by greater than the inner peripheral length L1 of the first and second locking holes 22 and 32, when wearing the mask 1, and the movement of Shimehimo 3,4 is regulated, Shimehimo 3,4 it can be inhibited from positional deviation. Further, in the worn condition, the upper part 3A of Shimehimo 3,4, when the 4A and the lower portion 3B, and the 4B have the same tension, the upper part 3A, 4A is hit relatively strongly ears stimulation where there is a possibility to give, by moderate resistance Shimehimo 3 and 4 are elastically deformed occurs, such that the upper portion 3A, 4A and the lower portion 3B, and the 4B not the same tension, i.e., the upper portion 3A, the lower portion 3B tension (tension) of 4A, can be made to be smaller than the tension of 4B.
[0025]
　As the mask 1 according to this embodiment, when turned around the ear portion folded back Shimehimo 3,4 up or down, usually before wearing the mask 1, the upper part 3A to the dimensions of the head , to wear in a state of performing 4A and the lower portion 3B, the length adjustment of the 4B. That is, the lower the upper portion 3A, if the relatively short length of 4A, since the wearer rubbing when hooked to the ear by increasing pull it sometimes feel pain, upper portion 3A, the 4A side portions 3B, to wear in a state adjusted in advance so as to be relatively long with respect to 4B. Also, as described above, the upper portion 3A, the tension the lower portion 3B of the 4A, because if it is the same as 4B sometimes feel pain in the ear portion was adjusted such that the upper portion 3A, the tension of 4A decreases to wear Te, sometimes the upper part 3A, 4A of the tension and the lower part 3B, and the tension of the 4B becomes the same size while wearing.
[0026]
　In the mask 1 according to the present embodiment, even when the Shimehimo 3 and 4 are formed from any of a strip elastic member and string-like elastic body, the first and second locking holes 22 and 32 when locked, since a part thereof enters the narrow portion is elastically deformed, once been stopped once, it does not move inadvertently in the front-rear direction. Therefore, the length of Shimehimo 3,4 which has been previously adjusted, it is possible to suppress the change in the wear. However, when the movement of Shimehimo 3 and 4 are fully regulated, after wear, can not themselves wearer to finely adjust the upper portion 3A, 4A and the lower part 3B, the length of the 4B . Therefore, it is preferable that the locked state with only the loose lacing 3,4 can move by pulling upward or downward the Shimehimo 3,4 at the required force. To realize such a locking, the outer peripheral dimensions when Shimehimo 3 and 4 are formed from the width dimension R1 or string-like elastic body when it is formed from a strip-shaped elastic body R2, the first and is preferably 150% of the size of the inner peripheral length L1 of the second locking hole 22, 32. Thus, according to the fastener 10 of the present embodiment, since the movement in the front-rear direction is restricted by the required resistance to Shimehimo 3 and 4 are loaded, the mouth portion when a conversation the movement degree, adjusted the upper and lower portions 3A, 3B, 4A, there is no possibility that tension 4B is changed. Also, free vertical portion 3A by the wearer operates by themselves, 3B, 4A, since the length of 4B can be easily adjusted, as if their tension during wear is changed It may also be returned to the appropriate tension.
[0027]
　Referring again to FIG. 2, the width W4 of the portion positioned in the vicinity of the insertion hole 31 of the notch portion 33 of the second locking portion 30 is smaller than the width W2 of the neck 34, also the guide groove 21 It is smaller than the width W1 of the straight portions 21b. Further, the width W2 of the width W1 and the neck 34 of Jikajo site 21b, towards the lacing 3,4 made of a strip-shaped elastic member or string-like elastic body into the first locking hole 22 while elastically deforming while a size that can be passed, the width W4 of the cut portion 33 preferably has a lacing 3,4 be elastically deformed a size which can not pass through. Shimehimo 3, since it is inserted in advance through hole 31, the width W4 of the cut portion 33 by such relatively small, Shimehimo 3 is prevented from coming off the fastener 10 be able to. On the other hand, the first locking portion 20, but the guide groove 21 has a size that Shimehimo 4 can pass, greatly curved toward than the cut portion 33 to the second locking hole 32 since that has become lacing 4 locking is released in the first locking hole 22 is also moved to the first side edge 11 side, hardly easily disengaged from the fastener 10.
[0028]

　FIG. 7, in the mask 1 having a fastener 10 according to the first embodiment, an example of a modification of the fastener 10 is a plan view similar to FIG. In this variation, the cut portion 33 of the second locking portion 30, rather than from the second side edge 12, extends from the guide groove 21 of the first locking portion 20 to the insertion hole 31. Thus, when the cut portion 33 extends from the guide groove 21 is inserted through the Shimehimo 3,4 from the guide groove 21 of the first locking portion 20, the straight portion 21b in Kyokujo site 21a by pulling the second edge 14 side along the cut portions 33 of the fastening strap 4 at a branch point 35 between the portion and the notch portion 33 toward, it can be moved from the cut portion 33 to the second locking portion 30. In such a case, it is possible to insert when advance or used in fastener 10 Shimehimo 3,4 together from a first side edge 11 side, when inserting the respective different side edges 11, 12 it can be carried out easily and quickly locking operation compared to. Incidentally, the cut portion 33, in addition to the embodiments extends substantially linearly from the guide groove 21 as shown, or may have a curved shape.
[0029]

　FIG. 8, in the mask 1 having a fastener 10 according to the second embodiment and is a plan view of the fastener 10. Fastener 10 according to this embodiment is a locking member 10 and the basic configuration of the first embodiment are the same will be described only below the point of difference.
[0030]
　Referring to FIG. 8, the locking member 10 according to this embodiment, the first locking portion 50 is a second locking portion 30 and the same shape, the guide groove 51 of the first locking portion 50 includes a first to the first portion 51a and communicating that extends from 1 side edge 11 inwardly, and a second portion 51b of the second insertion hole 31 of the locking portion 30 and the same shape and size. The first portion 51a is curved slightly to the first edge 13 side in the second portion 51b side. The second portion 51b is in communication with the first locking hole 22 through the neck 54 in the first edge 13 side. In the fastener 10 having such a shape, prior to use of the mask 1, along with Shimehimo 3 is preliminarily inserted into the second locking portion 30, Shimehimo 4 to the second portion 51b of the first locking portion 50 There may be pre-inserted. Furthermore, when worn, it may be passed through the lacing 4 a first portion 51a of the first locking portion 50 as a guide.
[0031]
　Fastener 10 of the mask 1 according to the present invention, in addition to being formed from a soft synthetic resin or hard, to the extent that they exhibit the desired elasticity may be a paper or metal. As for the outer shape, as long as the first locking portion 20 and 50 and the second locking portion 30 is located alongside the transverse direction X, the corner portions may be pointed rather than music-like, according to the size of the mask 1 to be used, the size and thickness of the longitudinal direction Y and the transverse direction X can be appropriately adjusted. Furthermore, in order to impart design properties to fastener 10, may be colored chromatic color picture, symbols, characters may be arranged various design elements, such as product logo.
[0032]
　Disclosure relates to the present invention described above can be organized into the following matters.
[0033]
　And a vertical and horizontal direction, and first and second side edges extending in the transverse direction, a mask having an oblong thin-plate locking device comprising a first and second end edges extending in the longitudinal direction a is a first engaging portion for detachably engaging one of the clamping strap of the mask, positioned in the second end edge of said first engagement portion and the other of clamping of the mask and a second locking portion having an insertion hole for previously inserted cord, the first locking portion includes a guide groove extending from said first side edge, a first engaging leading to the guide groove and a hole, the second locking portion, said continuous with the insertion hole has a smaller second locking hole profile than, the first locking hole and the second locking hole is, They are mutually oriented in opposite directions in the lateral direction.
[0034]
　The present invention disclosed in the above paragraphs 0033 may include at least the following embodiments. Form of the embodiment can be adopted in combination with separate or together.
(1) said guide groove of said first engaging portion includes a first portion extending from said first side edge inwardly, connected to the first locking hole, larger profile than the first locking hole and a circular second portion.
(2) the tightening strap is formed from a strip elastic member, the width of the clamping strap is greater than the inner perimeter of the first and second locking holes.
(3) the Shimehimo is formed from a string-like elastic member, the outer peripheral dimension of said tightening string is greater than the inner perimeter of the first and second locking holes.
(4) the second locking portion, said has a cut portion leading to the insertion hole, the width of the portion located in the vicinity of the insertion hole of the cut portion is less than the width of the neck.
(5) including a mask body having a cup-shaped cover portion.
(6) The mask body has a face-contact portion positioned on the rear side of the outer peripheral edge of the cover portion.
DESCRIPTION OF SYMBOLS
[0035]
1 Mask
2 mask body
3 Shimehimo
4 Shimehimo
5 covering portion
6 face seal
10 locking member
11 first side edge
12 and the second side edge
13 first end edge
14 second edge
20 the first locking portion
21 guide groove
22 first locking hole
30 and the second locking portion
31 insertion hole
32 second locking hole
33 cut portion
50 the first locking portion
51 the guide groove
51a first part
51b second part
L1 first and second locking inner perimeter of the pore
width of the tightening strap consisting of R1 strip elastic
outer perimeter of lacing consisting R2 string-like elastic member
X transverse direction
Y longitudinal direction

WE CLAIM

And a vertical and horizontal direction, and first and second side edges extending in the transverse direction, a mask having an oblong thin-plate locking device comprising a first and second end edges extending in the longitudinal direction a is,
　with the first locking portion for detachably engaging one of the clamping strap of the mask, positioned in the second end edge of said first engagement portion and the other of clamping of the mask and a second locking portion having an insertion hole for previously inserted cord,
　the first locking portion includes a guide groove extending from said first side edge, a first engaging leading to the guide groove and a hole,
　the second locking portion, said continuous with the insertion hole has a smaller second locking hole profile than, the first locking hole and the second locking hole is, It said mask, characterized in that mutually facing in opposite directions in the lateral direction.
[Requested item 2]
　Wherein said guide grooves of the first engaging portion includes a first portion extending from said first side edge inwardly, connected to the first locking hole, a large circular profile than the first locking hole mask according to claim 1 and a second portion.
[Requested item 3]
　The lacing is formed from a strip elastic member mask according to claim 1 or 2 inner is greater than the perimeter of the clamping strap width dimension of the first and second locking holes of.
[Requested item 4]
　The Shimehimo is formed from a string-like elastic member, a mask according to claim 1 or 2 outer peripheral dimension greater than the inner perimeter of the first and second locking holes of the tightening cord.
[Requested item 5]
　Said second locking portion, it said has a cut portion leading to the insertion hole, the width of the portion located in the vicinity of the insertion hole of the cutting portions is smaller claim than the width of the neck 1-4 mask according to any one of the.
[Requested item 6]
　Mask according to any one of claims 1 to 5 including a mask body having a cup-shaped cover portion.
[Requested item 7]
　The mask body, the mask of claim 6 having a face-contact portion positioned on the rear side of the outer peripheral edge of the cover portion.