WO2022057161A1 - 口罩 - Google Patents

口罩 Download PDF

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Publication number
WO2022057161A1
WO2022057161A1 PCT/CN2020/142452 CN2020142452W WO2022057161A1 WO 2022057161 A1 WO2022057161 A1 WO 2022057161A1 CN 2020142452 W CN2020142452 W CN 2020142452W WO 2022057161 A1 WO2022057161 A1 WO 2022057161A1
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WO
WIPO (PCT)
Prior art keywords
adaptive
arc
convex portion
shaped
hole
Prior art date
Application number
PCT/CN2020/142452
Other languages
English (en)
French (fr)
Inventor
赵毅武
鹿建春
李仁耀
范冬梅
张良
刘云
董骧
Original Assignee
北京纳通科技集团有限公司
纳通医用防护器材(天津)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京纳通科技集团有限公司, 纳通医用防护器材(天津)有限公司 filed Critical 北京纳通科技集团有限公司
Priority to US17/628,778 priority Critical patent/US20230076594A1/en
Priority to JP2022508880A priority patent/JP2022552588A/ja
Priority to EP20945714.2A priority patent/EP3997995A4/en
Publication of WO2022057161A1 publication Critical patent/WO2022057161A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
    • A41D13/1161—Means for fastening to the user's head
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
    • A41D13/1107—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D27/00—Details of garments or of their making

Definitions

  • the embodiments of the present application relate to the technical field of medical and health care, and in particular, to a mask.
  • Mask is a kind of health protection equipment, which is used to reduce or prevent harmful particles in the air, including bacteria, viruses, suspended particles, harmful gases, etc. from being inhaled into the lungs. To a certain extent, it ensures that the wearer inhales pure air and is widely used in labor protection. , health care. Especially in some highly polluted environments, masks have become an essential protective tool.
  • a concave part or a pressure strip is provided at the position corresponding to the bridge of the nose of the mask, but the fit between the mask and the bridge of the nose is poor for the form of the concave part; for the form of the pressure strip, when the user exhales, the pressure strip is prone to loose deformation. , that is, the protection of the above two structures cannot be guaranteed.
  • the present application aims to solve one of the technical problems in the related art at least to a certain extent.
  • the embodiment of the present application proposes a mask, the upper edge of the mask can form an adaptive shape according to the face shape of the user, and the fit between the mask and the face is high.
  • the mask according to the embodiment of the present application includes a cover body, the upper edge of the cover body is provided with a length adjustment member and an adaptive member, the adaptive member is arranged on the inner side of the length adjustment member, and the length adjustment member can be adjusted with The facial curve bends and acts on the adaptive member, so that the adaptive member is deformed by force and adapts to the facial curve to fit on the face.
  • the shape of the adaptive member can be adaptively adjusted according to the bending amplitude of the length adjustment member, so that the shape of the upper edge of the mask body matches the shape of the user's face, and the mask is attached to the face.
  • the combination is more closely, which effectively improves the protective effect of the mask.
  • the adaptive means includes a first adaptive fixed area, a second adaptive fixed area, and an adaptive fixed area between the first adaptive fixed area and the second adaptive fixed area
  • the length adjusting member is used for adjusting the distance between the first adaptive fixing area and the second adaptive fixing area, so that the adaptive area forms an arc shape suitable for the face.
  • the adaptive region is bendable to vary between a first position, in which the adaptive region is flat, and a second position, in which the adaptive region is straight
  • the adaptive zone is generally W-shaped and includes a first arc-shaped segment, a second arc-shaped segment, and an arc-shaped connecting portion connecting the first arc-shaped segment and the second arc-shaped segment, the first arc-shaped segment Both the segment and the second arc-shaped segment protrude toward the inner side of the cover body, and the arc-shaped connecting portion protrudes toward the outer side of the cover body.
  • the thickness of the adaptive region is smaller than the thickness of the first adaptive fixed region, and the thickness of the adaptive region is smaller than the thickness of the second adaptive fixed region.
  • the thickness of the first arc-shaped segment gradually decreases along the middle of the first arc-shaped segment toward both sides, and the thickness of the second arc-shaped segment is along the thickness of the second arc-shaped segment.
  • the middle gradually decreases toward both sides, and the thickness of the arc-shaped connecting portion gradually decreases toward both sides along the middle of the arc-shaped connecting portion.
  • the width of the adaptive region is smaller than the width of the first adaptive fixed region, and the width of the adaptive region is smaller than the width of the second adaptive fixed region.
  • the width of the first arc-shaped segment gradually decreases along the middle of the first arc-shaped segment toward both sides, and the width of the second arc-shaped segment is along the width of the second arc-shaped segment.
  • the middle gradually decreases toward both sides, and the width of the arc-shaped connecting portion gradually decreases toward both sides along the middle of the arc-shaped connecting portion.
  • the first arc-shaped segment, the second arc-shaped segment and the arc-shaped connecting portion are all provided with through holes.
  • the cross-sectional area of the through hole of the first arc-shaped segment gradually decreases along the middle of the first arc-shaped segment toward both sides
  • the cross-sectional area of the through-hole of the second arc-shaped segment The area gradually decreases toward both sides along the middle of the second arc-shaped segment
  • the cross-sectional area of the through hole of the arc-shaped connecting portion gradually decreases toward both sides along the middle of the arc-shaped connecting portion.
  • the material of the adaptive member is a temperature change material.
  • the length adjustment member is an adjustment belt
  • the material of the adjustment belt is an elastic material or a flexible material.
  • the adaptive member is a deformable sheet.
  • the arc-shaped connecting portion is provided with a first middle hole and a second middle hole
  • the first adaptive fixing area is provided with a first left hole and a second left hole
  • the second adaptive fixing area is provided with a first left hole and a second left hole.
  • the fixing area is provided with a first right hole and a second right hole, and the adjustment belt passes through the first left hole, the second left hole, the first middle hole, the second middle hole, and the first right hole and the second right hole.
  • the deformable sheet has a central convex portion protruding downward, a left central convex portion and a right central convex portion, the central convex portion protruding downward and located at the center of the deformable sheet,
  • the left middle convex portion protrudes downward, is located to the left of the central convex portion and is spaced from the central convex portion, and the right middle convex portion protrudes downward and is located on the right side of the central convex portion and spaced from the central protrusion
  • the central convex portion is generally rectangular, each of the left central convex portion and the right central convex portion gradually narrows from top to bottom and has an arcuate lower edge.
  • the width of the deformable sheet in the up-down direction gradually increases from the left middle convex portion toward the left end of the deformable sheet and from the right central convex portion toward the deformable sheet The right end gradually increases.
  • Fig. 1 is the mask schematic diagram according to the embodiment of the application.
  • FIG. 2 is a schematic diagram of an adaptive component in a first position according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of an adaptive component in a second position according to an embodiment of the present application.
  • FIG. 4 is a front view of a mask according to an embodiment of the present application.
  • FIG. 5 is an exemplary schematic diagram of a deformable sheet according to an embodiment of the present application.
  • FIG. 6 is another exemplary schematic diagram of a deformable sheet according to an embodiment of the present application.
  • FIG. 7 is yet another exemplary schematic diagram of a deformable sheet according to an embodiment of the present application.
  • Cover body 1 length adjustment member 2, adaptive member 3, first adaptive fixing area 31, second adaptive fixing area 32, adaptive area 33, first arc section 331, second arc section 332, arc Shape connecting part 333, first left hole 41, second left hole 42, first middle hole 43, second middle hole 44, first right hole 45, second right hole 46, left middle convex part 47, center convex part 48, right middle convex part 49.
  • the mask according to the embodiment of the present application includes a cover body 1, the cover body 1 has an upper edge and a lower edge, and the upper edge is provided with a length adjusting member 2 and an adaptive member 3, and the adaptive member 3 is provided at On the inner side of the length adjusting member 2, the length adjusting member can be bent along with the facial curve and act on the adaptive member, so that the adaptive member is deformed by force and adapts to the facial curve to fit on the face.
  • the self-adaptive member should be concave to the face and fit the facial structure to realize the sealing of the upper edge of the mask.
  • the deformation of the adaptive member 3 can be adaptively adjusted according to the bending amplitude of the length adjustment member 2, so that the shape of the upper edge of the mask body 1 matches the shape of the user's face, and the mask matches the shape of the face of the user.
  • the fit of the mask is tighter, which effectively improves the protective effect of the mask.
  • the adaptive member 3 includes a first adaptive fixed area 31 , a second adaptive fixed area 32 , and an adaptive area 33 located between the first adaptive fixed area 31 and the second adaptive fixed area 32 .
  • the position of the adaptive area 33 is set according to the specific situation. After the user wears the mask, the adaptive fixing area should be located near the periphery of the zygomatic bone. The distance between the area 31 and the second self-adaptive fixed area 32, so that the self-adaptive area 33 is deformed to form an arc suitable for the face.
  • the length adjustment member 2 When the user wears the mask, the length adjustment member 2 is deformed to adapt to the facial structure, and the adaptive member 3 is subjected to pressure close to the face through the bending deformation of the length adjustment member 2, so that the adaptive member 3 can be deformed and automatically
  • the adaptation zone 33 forms an arc shape adapted to the face.
  • the adaptive zone 33 can be bent to change between a first position, which refers to the position of the adaptive zone 33 when the mask is not being worn by the user, and a second position, which refers to the position of the adaptive zone 33 when the mask is not being worn by the user. What is the position of the adaptive zone 33 after the user wears the mask.
  • the adaptive area 33 when the adaptive area 33 is in the first position, the adaptive component is in a straight state, the adaptive area 33 is also in a straight state, the cover body 1 is in a flat state as a whole, and occupies a small space.
  • the length adjusting member 2 drives the upper edge of the cover body 1 to bend, and the linear distance between the first adaptive fixing area 31 and the second adaptive fixing area 32 decreases.
  • the adaptive area 33 is bent, the adaptive area 33 is generally W-shaped and includes a first arc section 331, a second arc section 332 and an arc connecting part 333, and the arc connecting part 333 is located in the first arc
  • the first arc-shaped section 331 and the second arc-shaped section 332 both protrude toward the inner side of the cover The outside protrudes.
  • the outer side refers to the side of the cover body 1 away from the face when the user wears the mask
  • the inner side refers to the side of the cover body 1 that fits the face.
  • the arc-shaped connecting portion 333 corresponds to the position of the nose bridge of the face
  • the first arc-shaped section 331 and the second arc-shaped section 332 correspond to the face positions on both sides of the nose bridge
  • the first arc-shaped section corresponds to the position of the face on both sides of the nose bridge.
  • the bending amplitudes of 331 , the second arc-shaped segment 332 and the arc-shaped connecting portion 333 can be adaptively adjusted according to the bending amplitude of the length adjusting member 2 or the distance between the first adaptive fixing area 31 and the second adaptive fixing area 32 , the distance between the first self-adaptive fixed area 31 and the second self-adaptive fixed area 32 can be adjusted by tightening the length adjusting member 2, or by helical teeth, buckles, glue, friction, etc. way to adjust.
  • the self-adaptive area 33 can also be in the second position in the initial state, and the close fit between the self-adaptive area and the face can be realized by fine-tuning the length adjustment member 2. With just a little fine-tuning, the adaptive zone 33 can fit snugly on the face.
  • the upper edge of the cover body 1 can be adapted to its own face shape and nose shape by adjusting the bending amplitude of the adjustment band or the distance between the first adaptive fixing area 31 and the second adaptive fixing area 32 .
  • the bending amplitude of the length adjusting member 2 should be appropriately increased or the distance between the first adaptive fixing area 31 and the second adaptive fixing area 32 should be appropriately reduced, so that the first arc-shaped segment 331,
  • the bending range of the second arc-shaped segment 332 and the arc-shaped connecting portion 333 becomes larger, and the shape of the upper edge of the cover body 1 matches the shape of the user's nose.
  • the thickness of the adaptive region 33 is smaller than the thickness of the first adaptive fixed region 31 , and the thickness of the adaptive region 33 is smaller than the thickness of the second adaptive fixed region 32 .
  • the stress of the first adaptive fixing area 31 and the second adaptive fixing area 32 is weaker, deformation is more likely to occur, and the fitting effect with the face is better.
  • the thickness of the first arc-shaped section 331 gradually decreases along the middle of the first arc-shaped section 331 toward both sides
  • the thickness of the second arc-shaped section 332 gradually decreases along the middle of the second arc-shaped section 332 toward both sides
  • the thickness of the arc-shaped connecting portion 333 gradually decreases along the middle of the arc-shaped connecting portion 333 toward both sides.
  • the width of the adaptive region 33 is smaller than the width of the first adaptive fixed region 31 , and the width of the adaptive region 33 is smaller than the width of the second adaptive fixed region 32 . Deformation easily occurs.
  • the width direction corresponds to the width direction of the cover body 1 (the vertical direction indicated by the arrow B in FIG. 4 ).
  • the width of the first arc-shaped segment 331 gradually decreases toward both sides along the middle of the first arc-shaped segment 331
  • the width of the second arc-shaped segment 332 gradually decreases toward both sides along the middle of the second arc-shaped segment 332
  • the width of the arc-shaped connecting portion 333 gradually decreases toward both sides along the middle of the arc-shaped connecting portion 333 .
  • the middle position of the first arc segment 331, the middle position of the second arc segment 332, and the middle position of the arc connecting portion 333 are the areas with the weakest stress and the easiest Bending deformation occurs, thereby ensuring that the deformable sheet can form three arc-shaped segments and fit the face.
  • the first arc-shaped segment 331 , the second arc-shaped segment 332 and the arc-shaped connecting portion 333 are all provided with through holes, and the number of through holes may be one or more. Similarly, opening through holes on the first arc-shaped segment 331 , the second arc-shaped segment 332 and the arc-shaped connecting portion 333 also makes the stress of the adaptive region 33 weaker, which is conducive to deformation.
  • the number of through holes is multiple, the cross-sectional area of the through holes of the first arc-shaped segment 331 gradually decreases along the middle of the first arc-shaped segment 331 toward both sides, and the second arc-shaped The cross-sectional area of the through hole of the segment 332 gradually decreases toward both sides along the middle of the second arc-shaped segment 332 , and the cross-sectional area of the through hole (not shown) of the arc-shaped connecting portion 333 is along the middle of the arc-shaped connecting portion 333 . gradually decrease to the sides. Therefore, the stress at the middle part of the first arc-shaped segment 331 , the second arc-shaped segment 332 and the arc-shaped connecting portion 333 is the weakest, and deformation is more likely to occur.
  • the material of the adaptive member 3 may also be a temperature-changeable material, and the hardness of the adaptive member changes with the change of temperature.
  • the temperature change material may be one of polynorbornene, trans-polyisoprene, polyurethane, styrene-butadiene copolymer, polyolefin, polycaprolactate, polyamide, or Several materials are made.
  • the length adjustment member 2 is an adjustment belt
  • the material of the adjustment belt is an elastic material or a flexible material.
  • the elastic material such as an elastic belt, can play a good adjustment role, and only need to pull the two ends of the elastic belt to both sides
  • the distance between the first adaptive region 33 and the second adaptive region 33 can be shortened and deformed by extending and restoring it to the original position.
  • Flexible materials such as common laces, can also achieve adjustment.
  • the adaptive member 3 can also be made into a sleeve structure, and the length adjustment member 2 can pass through the sleeve to apply a deformation force to the adaptive member 3, or can be connected with the end of the sleeve to apply deformation force to the adaptive member 3.
  • the sleeve applies tension to deform to fit the facial structure.
  • the thickness of the sleeve in the adaptive zone 33 is slightly thinner than other parts, so as to realize the force adaptation to the deformation of the facial structure.
  • the length adjustment member 2 is made of aluminum, such as a common aluminum nose bridge bead structure, which plays a certain shaping role after the length adjustment member 2 is bent, and the length adjustment member 2 continues to apply pressure to the adaptive zone 33 pressure to prevent it from deforming due to movement of the face.
  • the length adjustment member 2 adopts an aluminum bead structure, and a limit structure should be set between the length adjustment member 2 and the adaptive member 3 to ensure that when the length of the length adjustment member 2 between the adaptive areas reaches an appropriate position, the The position of the length adjustment member 2 is defined.
  • matching helical teeth are provided on the opposite side of the length adjusting member 2 and the adaptive member 3, and the helical teeth of the length adjusting member 2 and the helical teeth of the adaptive member 3 have opposite inclination directions.
  • the adaptive member 3 Relative to the length adjustment member 2, it can only move relatively in one direction.
  • the helical teeth of the adaptive member 3 cooperate with the helical teeth of the length adjustment member 2 to automatically
  • the adapting member 3 cannot continue to move, so as to realize the limit function.
  • the adaptive member 3 is a deformable sheet
  • the deformable sheet can be a thin sheet that can be deformed by force, such as a plastic sheet, an aluminum sheet, or the like.
  • the deformable sheet may be an independent structure disposed between the cover body 1 and the length adjusting member 2 , or may be directly used as the upper edge of the cover body 1 .
  • the deformable sheet can not only deform better and fit the face adaptively, but also has a certain hardness, it is not easy for the user to exhale when exhaling. deformation, so that the protective effect of the mask is better. After the mask is used, the deformable sheet can also automatically return to a straight state, taking up little space.
  • the adaptive region 33 is provided with a first middle hole 43 and a second middle hole 44
  • the first adaptive fixing region 31 is provided with a first left hole 41 and a second left hole 41
  • the left hole 42 and the second self-adaptive fixing area 32 are provided with a first right hole 45 and a second right hole 46
  • the adjustment belt passes through the first left hole 41, the second left hole 42, the first middle hole 43, the second The middle hole 44 , the first right hole 45 and the second right hole 46 .
  • a through hole is further provided between the first middle hole 43 and the second middle hole 44 , the function of which is to reduce the stress of the adaptive region 33 at this position.
  • the adjustment belt passes through the above-mentioned through holes in sequence, so that the adjustment belt extends along the length direction of the deformable sheet (the left and right directions indicated by arrow A in FIG. 4 ), the deformable sheet can slide along the adjustment belt, and the double through hole structure increases Adjusting the friction between the belt and the deformable sheet, the adjusting belt not only plays a connecting role, but also plays a fixed role. After the deformable sheet is deformed, the adjusting belt can prevent the two ends of the deformable sheet Outward extension to keep it in the second position.
  • the deformable sheet has a central convex portion 48 , a left central convex portion 47 and a right central convex portion 49 that protrude downward, and the central convex portion 48 protrudes downward and Located in the center of the deformable sheet, the left middle convex portion 47 protrudes downward, is located on the left side of the central convex portion 48 and is spaced apart from the central convex portion 48, and the right middle convex portion 49 projects downward and is located on the left side of the central convex portion 48.
  • the central protrusion 48 Located in the center of the deformable sheet, the left middle convex portion 47 protrudes downward, is located on the left side of the central convex portion 48 and is spaced apart from the central convex portion 48, and the right middle convex portion 49 projects downward and is located on the left side of the central convex portion 48.
  • the two side edges of the left middle convex portion 47 and the right middle convex portion 49 are in the form of creases.
  • the width of the bridge of the nose is optionally broken off the edge crease line of the convex portion for a better fit.
  • the central convex portion 48 is substantially rectangular, and each of the left central convex portion 47 and the right central convex portion 49 is gradually narrowed from top to bottom and the lower edge is arc-shaped.
  • the width of the deformable piece in the up-down direction gradually increases from the left middle convex portion 47 toward the left end of the deformable piece and gradually increases from the right middle convex portion 49 toward the right end of the deformable piece.
  • the deformable sheet is symmetrically designed to make the deformable sheet beautiful in appearance. From the left middle convex portion 47 and the right middle convex portion 49 to the central convex portion 48, the lower edge of the deformable sheet gradually becomes smaller and has a certain radian, The purpose is to reduce the material near the cheekbones and reduce the pressure of the deformable sheet on the cheekbones. At the same time, due to the curved design, the deformable sheet can fit closely with the face and enhance the sealing performance of the mask.
  • the width in the up-down direction gradually increases from the left middle convex portion 47 toward the left end of the deformable sheet and gradually increases from the right middle convex portion 49 toward the right end of the deformable sheet in order to strengthen the overall strength of the deformable sheet, and at the same time in the cover.
  • the upper and lower widths of the elastic nose clips are thickened where gaps easily appear on both sides of the body 1, which can prevent gaps on both sides of the cover body 1 and enhance the sealing performance of the mask.
  • the mask according to the embodiment of the present application includes a cover body 1, the cover body 1 has an upper edge and a lower edge, the upper edge of the cover body 1 is provided with a length adjustment member 2 and an adaptive member 3, and the adaptive member 3 is provided at The inner side of the length adjustment member 2 .
  • the length adjusting member 2 is an adjusting belt
  • the adaptive member 3 is a deformable sheet.
  • the deformable sheet includes a first adaptive fixing area 31 , a second adaptive fixing area 32 and an adaptive area 33 , and the adaptive area 33 can be bent to be in the first position and the second position In the first position, the deformable sheet is straight, and the cover body 1 is in a flat state as a whole. The straight-line distance between the adaptive fixing areas 32 is reduced, and the adaptive area 33 is bent.
  • the adaptive area 33 is generally W-shaped and includes a first arc-shaped segment 331, a second arc-shaped segment 332 and an arc-shaped connecting portion 333, The arc-shaped connecting portion 333 is located between the first arc-shaped section 331 and the second arc-shaped section 332 and plays a connecting role.
  • the arc-shaped connecting portion 333 protrudes toward the outer side of the cover body 1 .
  • the arc-shaped connecting portion 333 fits the user's nose bridge, the first arc-shaped segment 331 and the second arc-shaped segment 332 are respectively attached to the faces on both sides of the nose bridge, and the shape of the deformable sheet can be adjusted according to the belt Make adaptive adjustments.
  • the thickness of the adaptive region 33 is smaller than the thickness of the first adaptive fixed region 31, the thickness of the adaptive region 33 is smaller than the thickness of the second adaptive fixed region 32, and the thickness of the first arc segment 331 is along the first arc segment.
  • the middle of 331 gradually decreases to both sides
  • the thickness of the second arc-shaped section 332 gradually decreases to both sides along the middle of the second arc-shaped section 332
  • the thickness of the arc-shaped connecting portion 333 is along the middle of the arc-shaped connecting portion 333. gradually decrease to the sides.
  • the adaptive area 33 is provided with a first middle hole 43 and a second middle hole 44
  • the first adaptive fixing area 31 is provided with a first left hole 41 and a second left hole 42
  • the second adaptive fixing area is provided with a first left hole 41 and a second left hole 42
  • the area 32 is provided with a first right hole 45 and a second right hole 46
  • the adjustment belt passes through the first left hole 41, the second left hole 42, the first middle hole 43, the second middle hole 44, and the first right hole 45 in sequence. and the second right hole 46.
  • the adjustment straps can prevent the two ends of the deformable sheet from extending outward to a certain extent, and keep it in the second position.
  • the deformable sheet has a central convex portion 48, a left central convex portion 47 and a right central convex portion 49 that protrude downward.
  • the central convex portion 48 is protruded downward and is located in the center of the deformable sheet, and the left central convex portion 47 is convex downward.
  • the right middle convex portion 49 protrudes downward, is located to the right of the central convex portion 48 and is spaced from the central convex portion 48 .
  • the central convex portion 48 is substantially rectangular, and each of the left central convex portion 47 and the right central convex portion 49 is gradually narrowed from top to bottom and the lower edge is arc-shaped.
  • the width of the deformable piece in the up-down direction gradually increases from the left middle convex portion 47 toward the left end of the deformable piece and gradually increases from the right middle convex portion 49 toward the right end of the deformable piece.
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with “first”, “second” may expressly or implicitly include at least one of that feature.
  • plurality means at least two, such as two, three, etc., unless expressly and specifically defined otherwise.
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two components or the interaction relationship between the two components, unless otherwise expressly qualified.
  • installed installed
  • connected connected
  • fixed a detachable connection
  • it can be a mechanical connection or an electrical connection or can communicate with each other
  • it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two components or the interaction relationship between the two components, unless otherwise expressly qualified.
  • the specific meanings of the above terms in this application can be understood according to specific situations.
  • a first feature "on” or “under” a second feature may be in direct contact with the first and second features, or the first and second features indirectly through an intermediary touch.
  • the first feature being “above”, “over” and “above” the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature.
  • the first feature being “below”, “below” and “below” the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.
  • the terms “one embodiment,” “some embodiments,” “example,” “specific example,” or “some examples,” etc. mean the specific features, structures, materials, or characteristics described in connection with the embodiment or example. Features are included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

一种口罩，口罩包括罩体（1），罩体（1）的上沿设有长度调节构件（2）和自适应构件（3），自适应构件（3）设在长度调节构件（2）的内侧，长度调节构件（2）可随面部曲线弯曲并作用于自适应构件（3），以使自适应构件（3）受力变形并适应于面部曲线而贴合在面部。口罩罩体（1）上沿的形状可以根据用户的脸型进行自适应的调节，口罩与脸部的贴合更加紧密，有效地提高了口罩的防护效果。

Description

口罩
相关申请的交叉引用
本申请要求申请号为202010968175.7和申请号为202010996637.6的中国专利申请的优先权和权益，上述中国专利申请的全部内容在此通过引用并入本申请。
技术领域
本申请的实施例涉及医疗卫生技术领域，尤其涉及一种口罩。
背景技术
口罩是一种卫生防护用具，用于减少或阻止空气中有害颗粒包括病菌、病毒、悬浮颗粒、有害气体等吸入肺中，在一定程度上保证了佩戴者吸入纯净的空气，广泛应用于劳动防护、保健领域。特别是在某些污染程度高的环境，口罩已经成为必备的防护工具。
为了保证口罩具有良好的防护效果，需要口罩与面部尤能很好的贴合，否则有害气体容易从口罩与面部的空隙进入内部呼吸空间，尤其容易从鼻梁两侧吸入。相关技术中，在口罩对应鼻梁的位置设置凹部或者加设压条，但是，对于设置凹部的形式口罩与鼻梁的贴合度差；对于设置压条的形式，用户在呼气时，压条容易出现松动变形，即上述两种结构的防护性都无法得到保证。
发明内容
本申请旨在至少在一定程度上解决相关技术中的技术问题之一。
为此，本申请的实施例提出一种口罩，所述口罩的上沿可以根据用户的脸型形成自适应的形状，口罩与脸部的贴合度高。
根据本申请实施例的口罩包括罩体，所述罩体的上沿设有长度调节构件和自适应构件，所述自适应构件设在所述长度调节构件的内侧，所述长度调节构件可随面部曲线弯曲并作用于所述自适应构件，以使所述自适应构件受力变形并适应于面部曲线而贴合在面部。
根据本申请实施例的口罩，自适应构件的形状可以根据长度调节构件的弯曲幅度进行自适应的调节，从而使得罩体的上沿形状与用户的脸部形状相匹配，口罩与脸部的贴合更加紧密，有效提高了口罩的防护效果。
在一些实施例中，所述自适应构件包括第一自适应固定区、第二自适应固定区和位于所述第一自适应固定区和所述第二自适应固定区的之间的自适应区，所述长度调节构件用于调节所述第一自适应固定区和所述第二自适应固定区之间的距离，以使所述自适应区形成与面部相适应的弧形。
在一些实施例中，所述自适应区可弯折以在第一位置和第二位置之间变化，在所述第一位置，所述自适应区平直，在所述第二位置，所述自适应区大体为W形且包括第一弧形段、第二弧形段和连接所述第一弧形段和所述第二弧形段的弧形连接部，所述第一弧形段和所述第二弧形段均朝向所述罩体的内侧凸出，所述弧形连接部朝向所述罩体的外侧凸出。
在一些实施例中，所述自适应区的厚度小于所述第一自适应固定区的厚度，所述自适应区的厚度小于所述第二自适应固定区的厚度。
在一些实施例中，所述第一弧形段的厚度沿所述第一弧形段的中间向两侧逐渐减小，所述第二弧形段的厚度沿所述第二弧形段的中间向两侧逐渐减小，所述弧形连接部的厚度沿所述弧形连接部的中间向两侧逐渐减小。
在一些实施例中，所述自适应区的宽度小于所述第一自适应固定区的宽度，所述自适应区的宽度小于所述第二自适应固定区的宽度。
在一些实施例中，所述第一弧形段的宽度沿所述第一弧形段的中间向两侧逐渐减小，所述第二弧形段的宽度沿所述第二弧形段的中间向两侧逐渐减小，所述弧形连接部的宽度沿所述弧形连接部的中间向两侧逐渐减小。
在一些实施例中，所述第一弧形段、所述第二弧形段和所述弧形连接部均开设有通孔。
在一些实施例中，所述第一弧形段的通孔的横截面积沿所述第一弧形段的中间向两侧逐渐减小，所述第二弧形段的通孔的横截面积沿所述第二弧形段的中间向两侧逐渐减小，所述弧形连接部的通孔的横截面积沿所述弧形连接部的中间向两侧逐渐减小。
在一些实施例中，所述自适应构件的材料为温变材料。
在一些实施例中，所述长度调节构件为调节带，所述调节带的材料为弹性材料或柔性材料。
在一些实施例中，所述自适应构件为可变形片。
在一些实施例中，所述弧形连接部设有第一中孔和第二中孔，所述第一自适应固定区设有第一左孔和第二左孔，所述第二自适应固定区设有第一右孔和第二右孔，所述调节带依次穿过所述第一左孔、所述第二左孔、所述第一中孔、所述第二中孔、所述第一右孔和所述第二右孔。
在一些实施例中，所述可变形片具有向下凸出的中心凸部、左中凸部和右中凸部，所述中心凸部向下凸出且位于所述可变形片的中心，所述左中凸部向下凸出、位于所述中心凸部的左侧且与所述中心凸部间隔开，所述右中凸部向下凸出、位于所述中心凸部的右侧且与所述中心凸部间隔开
在一些实施例中，所述中心凸部为大体矩形，所述左中凸部和所述右中凸部中的每一个从上向下逐渐变窄且下边缘为弧形。
在一些实施例中，所述可变形片在上下方向上的宽度从所述左中凸部朝向所述可变形片的左端逐渐增大且从所述右中凸部朝向所述可变形片的右端逐渐增大。
附图说明
图1是根据本申请实施例的口罩示意图；
图2是根据本申请实施例的自适应构件在第一位置的示意图；
图3是根据本申请实施例的自适应构件在第二位置的示意图；
图4是根据本申请实施例的口罩的主视图；
图5是根据本申请实施例的可变形片的一个示例性示意图；
图6是根据本申请实施例的可变形片的另一个示例性示意图；
图7是根据本申请实施例的可变形片的又一个示例性示意图。
附图标记：
罩体1，长度调节构件2，自适应构件3，第一自适应固定区31，第二自适应固定区32，自适应区33，第一弧形段331，第二弧形段332，弧形连接部333，第一左孔41，第二左孔42，第一中孔43，第二中孔44，第一右孔45，第二右孔46，左中凸部47，中心凸部48，右中凸部49。
具体实施方式
下面详细描述本申请的实施例，所述实施例的示例在附图中示出。下面通过参考附图描述的实施例是示例性的，旨在用于解释本申请，而不能理解为对本申请的限制。
如图1所示，根据本申请实施例的口罩包括罩体1，罩体1具有上沿和下沿，所述上沿设有长度调节构件2和自适应构件3，自适应构件3设在长度调节构件2的内侧，长度调节构件可随面部曲线弯曲并作用于自适应构件，以使自适应构件受力变形并适应于面部曲线而贴合在面部。自适应构件向面部内凹应贴合与面部结构，实现口罩上沿的密封。
根据本申请实施例的口罩，自适应构件3的形变可以根据长度调节构件2的弯曲幅度进行自适应的调节，从而使得罩体1的上沿形状与用户的脸部形状相匹配，口罩与脸部的贴合更加紧密，有效提高了口罩的防护效果。
具体地，自适应构件3包括第一自适应固定区31、第二自适应固定区32和位于第一自适应固定区31和第二自适应固定区32的之间的自适应区33。自适应区33的位置根据具体情况设置，用户在佩戴口罩后，自适应固定区应位于颧骨周缘附近，以颧骨偏内侧区域为最佳，通过调节长度调节构件2调节第一自适应固定区31和第二自适应固定区32之间的距离，从而使自适应区33发生形变以形成与面部相适应的弧形。
用户在佩戴口罩时，长度调节构件2发生适应脸部结构的弯曲形变，通过长度调节构件2的弯曲形变给自适应构件3施以靠近脸部的压力，使得自适应构件3可以发生形变，自适应区33形成与面部相适应的弧形。
在一些实施例中，自适应区33可弯折以在第一位置和第二位置之间变化，第一位置指的是口罩未被用户佩戴时的自适应区33的位置，第二位置指的是用户在佩戴口罩后自适应区33的位置。
如图2所示，当自适应区33在第一位置时，自适应构件处于平直状态，自适应区33也处于平直状态，罩体1整体为平面状态，占用空间小。如图3所示，当自适应区33在第二位置时，长度调节构件2带动罩体1上沿弯曲，第一自适应固定区31和第二自适应固定区32之间的直线距离减小，自适应区33发生弯折，自适应区33大体为W形且包括第一弧形段331、第二弧形段332和弧形连接部333，弧形连接部333位于第一弧形段331和第二弧形段332之间并起到连接作用，第一弧形段331和第二弧形段332均朝向罩体1的内侧凸出，弧形连接部333朝向罩体1的外侧凸出。需要说明的是，所述外侧指的是用户在佩戴口罩时罩体1远离脸部的一侧，内侧指的是罩体1与脸部贴合的一侧。
当自适应区33处于第二位置时，弧形连接部333对应脸部的鼻梁位置，第一弧形段331和第二弧形段332对应鼻梁两侧的脸部位置，第一弧形段331、第二弧形段332和弧形连接部333弯曲的幅度可以根据长度调节构件2弯曲的幅度或第一自适应固定区31和第二自适应固定区32之间的距离进行自适应调节，调节第一自适应固定区31和第二自适应固定区32之间的距离的可以通过收紧长度调节构件2的方式进行调节，也可以通过斜齿、搭扣、粘胶、摩擦力等方式进行调节。当然，自适应区33也可以在初始状态就处于第二位置，通过微调长度调节构件2实现自适应区与面部的紧密贴合，换言之，口罩在出厂时自适应区33已设置为W形，只需进行微调，自适应区33就可以与面部相适应的紧密贴合。
长度调节构件2的弯曲幅度越大或第一自适应固定区31与第二自适应固定区32之间的距离越近，则自适应构件3的弯曲幅度越大，不同脸型和鼻形的用户可以通过调节调节带的弯曲幅度或者第一自适应固定区31和第二自适应固定区32之间的距离，从而使得罩体1的上沿可以适应自身的脸型和鼻形。例如，鼻梁较高的用户，长度调节构件2的弯曲幅度应适当增大或者第一自适应固定区31和第二自适应固定区32之间距离适当减小，使得第一弧形段331、第二弧形段332和弧形连接部333的弯曲幅度变大，罩体1上沿的形状与用户的鼻形相匹配。
在一些实施例中，自适应区33的厚度小于第一自适应固定区31的厚度，自适应区33的厚度小于第二自适应固定区32的厚度，由此，自适应区33相对于第一自适应固定区31和第二自适应固定区32的应力更薄弱，更加容易发生变形，与脸部的贴合效果更好。
具体地，第一弧形段331的厚度沿第一弧形段331的中间向两侧逐渐减小，第二弧形段332的厚度沿第二弧形段332的中间向两侧逐渐减小，弧形连接部333的厚度沿弧形连接部333的中间向两侧逐渐减小。
在一些实施例中，自适应区33的宽度小于第一自适应固定区31的宽度，自适应区33的宽度小于第二自适应固定区32的宽度，宽度越小，则应力越薄弱，更容易发生变形。所述宽度的方向与罩体1的宽度方向(图4中箭头B所示的上下方向)一致。
具体地，第一弧形段331的宽度沿第一弧形段331的中间向两侧逐渐减小，第二弧形段332的宽度沿第二弧形段332的中间向两侧逐渐减小，弧形连接部333的宽度沿弧形连接部333的中间向两侧逐渐减小。
如此设置，当自适应区33发生弯曲时，第一弧形段331的中间位置、第二弧形段332的中间位置以及弧形连接部333的中间位置是应力最弱的区域，也最容易发生弯曲变形，从而保证可变形片可以形成三段弧形段并与脸部相贴合。
在一些实施例中，第一弧形段331、第二弧形段332和弧形连接部333均开设有通孔，通孔的数量可以为一个或多个。同理，在第一弧形段331、第二弧形段332和弧形连接部333上开设通孔，同样使得自适应区33的应力更加薄弱，有利于变形。
具体地，如图7所示，通孔的数量为多个，第一弧形段331的通孔的横截面积沿第一弧形段331的中间向两侧逐渐减小，第二弧形段332的通孔的横截面积沿第二弧形段332的中间向两侧逐渐减小，弧形连接部333的通孔(未示出)的横截面积沿弧形连接部333的中间向两侧逐渐减小。由此，第一弧形段331、第二弧形段332和弧形连接部333中间的部位应力最为薄弱，更容易发生变形。
在一些实施例中，自适应构件3的材料还可以为温变材料，自适应构件的硬度随着温度的变化而变化。当自适应构件3与用户的脸部接触后，温度升高，自适应构件3的硬度减小，更容易发生变形，从而实现与脸部更好的贴合。具体地，所述温变材料可以为聚降冰片烯、反式聚异戊二烯、聚氨酯、苯乙烯-丁二烯共聚物、聚烯烃、聚己内酸酯、聚酰胺中的一种或几种制成的材料。
在一些实施例中，长度调节构件2为调节带，调节带的材料为弹性材料或柔性材料，弹性材料例如松紧带，可以起到很好的调节作用，只需将松紧带的两端向两侧拉伸，再让其恢复至初始位置，就可以缩短第一自适应区33和第二自适应区33之间的距离，使其变形。柔性材料如普通的系带，也可以实现调节作用。
在一些实施例中，自适应构件3还可以做成套筒结构，长度调节构件2可以从套筒内部穿过以对自适应构件3施加变形作用力，也可以通过与套筒末端连接以对套筒施加拉力以变形适应面部结构。在自适应区33的套筒厚度要比其他部分略薄，以实现受力适应面部 结构变形。
在一些实施例中，长度调节构件2的材料为铝，如常用的铝制鼻梁压条结构，在长度调节构件2发生弯曲后起到一定的定形作用，长度调节构件2持续对自适应区33施加压力，可以防止其因脸部运动而发生变形。长度调节构件2选用铝制压条结构，则长度调节构件2与自适应构件3之间应设置限位结构，保证自适应区之间的长度调节构件2的长度达到适当的的位置时，可以对长度调节构件2的位置进行限定。例如，在长度调节构件2与自适应构件3相对的侧面开设相匹配的斜齿，并且长度调节构件2的斜齿与自适应构件3的斜齿的倾斜方向相反，如此设置，自适应构件3相对于长度调节构件2只可沿一个方向相对移动，当自适应构件3之间有朝向另一方向移动的趋势时，自适应构件3的斜齿与长度调节构件2的斜齿相配合，自适应构件3不能继续移动，从而实现限位功能。
在一些实施例中，自适应构件3为可变形片，可变形片可以是塑料片，铝片等可以受力发生形变的薄片。可变形片可以为独立的结构设置在罩体1与长度调节构件2之间，也可以直接作为罩体1的上沿。
相较于普通的口罩罩体1上沿的柔性结构，可变形片不仅可以更好地发生形变并与脸部适应性贴合，并且由于具有一定的硬度，用户在呼气时，不容易发生变形，从而使得口罩的防护效果更好。在口罩使用完毕后，可变形片还可以自动恢复至平直状态，占用空间小。
如图4和图5所示，在一些实施例中，自适应区33设有第一中孔43和第二中孔44，第一自适应固定区31设有第一左孔41和第二左孔42，第二自适应固定区32设有第一右孔45和第二右孔46，调节带依次穿过第一左孔41、第二左孔42、第一中孔43、第二中孔44、第一右孔45和第二右孔46。需要说明的是，第一中孔43和第二中孔44之间还设有一通孔，其作用是减小该位置处自适应区33的应力。
由此，调节带依次穿过上述通孔，使得调节带沿可变形片的长度方向(图4中箭头A所示的左右方向)延伸，可变形片可以沿调节带滑动，双通孔结构增加了调节带与可变形片之间的摩擦力，调节带不仅起到连接作用，还起到了固定的作用，在可变形片变形后，调节带可以在一定程度上防止可变形片的两端向外延伸，使其保持在第二位置。
如图5和图6所示，在一些实施例中，可变形片具有向下凸出的中心凸部48、左中凸部47和右中凸部49，中心凸部48向下凸出且位于可变形片的中心，左中凸部47向下凸出、位于中心凸部48的左侧且与中心凸部48间隔开，右中凸部49向下凸出、位于中心凸部48的右侧且与中心凸部48间隔开。
在一些实施例中，为适应不同人面部的不同鼻梁宽度，为实现不同面部的良好贴合，左中凸部47和右中凸部49的两侧边缘采用折痕的方式，用户可以根据自身的鼻梁宽度有 选择的折断凸部的边缘折痕线，以实现更好的贴合。
具体地，中心凸部48为大体矩形，左中凸部47和右中凸部49中的每一个从上向下逐渐变窄且下边缘为弧形。可变形片在上下方向上的宽度从左中凸部47朝向可变形片的左端逐渐增大且从右中凸部49朝向可变形片的右端逐渐增大。
在生产过程中，可变形片对称设计，使可变形片造型美观，从左中凸部47和右中凸部49向中心凸部48，可变形片的下沿逐渐变小且具有一定弧度，目的是为了减小在颧骨附近材料，减小可变形片对颧骨的压力，同时由于曲线设计，能够使可变形片与脸部贴合紧密，增强口罩的密封性，而可变形片在上下方向上的宽度从左中凸部47朝向可变形片的左端逐渐增大且从右中凸部49朝向可变形片的右端逐渐增大则是为了加强可变形片的整体强度，同时在罩体1两侧容易出现缝隙处对弹性鼻夹片的上下宽度进行加厚，能够防止罩体1两侧产生缝隙，增强口罩的密封性。
下面参考附图描述根据本申请的一些具体示例的口罩。
如图1所示，根据本申请实施例的口罩包括罩体1，罩体1具有上沿和下沿，罩体1上沿设有长度调节构件2自适应构件3，自适应构件3设在长度调节构件2的内侧。在本实施例中，长度调节构件2为调节带，自适应构件3为可变形片。
如图2和图3所示，可变形片包括第一自适应固定区31、第二自适应固定区32和自适应区33，自适应区33可弯折以在第一位置和第二位置之间变化，在第一位置，可变形片片平直，罩体1整体为平面状态，在第二位置，调节带带动罩体1上沿弯曲，第一自适应固定区31和第二自适应固定区32之间的直线距离减小，自适应区33发生弯折，自适应区33大体为W形且包括第一弧形段331、第二弧形段332和弧形连接部333，弧形连接部333位于第一弧形段331和第二弧形段332之间并起到连接作用，第一弧形段331和第二弧形段332均朝向罩体1的内侧凸出，弧形连接部333朝向罩体1的外侧凸出。
在第二位置，弧形连接部333与用户的鼻梁贴合，第一弧形段331和第二弧形段332分别与鼻梁两侧的脸部贴合，可变形片的形状可以根据调节带进行自适应的调节。
自适应区33的厚度小于第一自适应固定区31的厚度，自适应区33的厚度小于第二自适应固定区32的厚度，并且，第一弧形段331的厚度沿第一弧形段331的中间向两侧逐渐减小，第二弧形段332处的厚度沿第二弧形段332的中间向两侧逐渐减小，弧形连接部333的厚度沿弧形连接部333的中间向两侧逐渐减小。
如图5所示，自适应区33设有第一中孔43和第二中孔44，第一自适应固定区31设有第一左孔41和第二左孔42，第二自适应固定区32设有第一右孔45和第二右孔46，调节带依次穿过第一左孔41、第二左孔42、第一中孔43、第二中孔44、第一右孔45和第二右孔46。在可变形片变形后，调节带可以在一定程度上防止可变形片的两端向外延伸，使其 保持在第二位置。
可变形片具有向下凸出的中心凸部48、左中凸部47和右中凸部49，中心凸部48向下凸出且位于可变形片的中心，左中凸部47向下凸出、位于中心凸部48的左侧且与中心凸部48间隔开，右中凸部49向下凸出、位于中心凸部48的右侧且与中心凸部48间隔开。
具体地，中心凸部48为大体矩形，左中凸部47和右中凸部49中的每一个从上向下逐渐变窄且下边缘为弧形。可变形片在上下方向上的宽度从左中凸部47朝向可变形片的左端逐渐增大且从右中凸部49朝向可变形片的右端逐渐增大。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本申请中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接或彼此可通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本申请中，术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施 例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本申请的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本申请的限制，本领域的普通技术人员在本申请的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (16)

  1. 一种口罩，其特征在于，包括：罩体，所述罩体的上沿设有长度调节构件和自适应构件，所述自适应构件设在所述长度调节构件的内侧，所述长度调节构件可随面部曲线弯曲并作用于所述自适应构件，以使所述自适应构件受力变形并适应于面部曲线而贴合在面部。
  2. 根据权利要求1所述的口罩，其特征在于，所述自适应构件包括第一自适应固定区、第二自适应固定区和位于所述第一自适应固定区和所述第二自适应固定区的之间的自适应区，所述长度调节构件用于调节所述第一自适应固定区和所述第二自适应固定区之间的距离，以使所述自适应区形成与面部相适应的弧形。
  3. 根据权利要求2所述的口罩，其特征在于，所述自适应区可弯折以在第一位置和第二位置之间变化，在所述第一位置，所述自适应区平直，在所述第二位置，所述自适应区大体为W形且包括第一弧形段、第二弧形段和连接所述第一弧形段和所述第二弧形段的弧形连接部，所述第一弧形段和所述第二弧形段均朝向所述罩体的内侧凸出，所述弧形连接部朝向所述罩体的外侧凸出。
  4. 根据权利要求2或3所述的口罩，其特征在于，所述自适应区的厚度小于所述第一自适应固定区的厚度，所述自适应区的厚度小于所述第二自适应固定区的厚度。
  5. 根据权利要求3所述的口罩，其特征在于，所述第一弧形段的厚度沿所述第一弧形段的中间向两侧逐渐减小，所述第二弧形段的厚度沿所述第二弧形段的中间向两侧逐渐减小，所述弧形连接部的厚度沿所述弧形连接部的中间向两侧逐渐减小。
  6. 根据权利要求2-5中任一项所述的口罩，其特征在于，所述自适应区的宽度小于所述第一自适应固定区的宽度，所述自适应区的宽度小于所述第二自适应固定区的宽度。
  7. 根据权利要求3所述的口罩，其特征在于，所述第一弧形段的宽度沿所述第一弧形段的中间向两侧逐渐减小，所述第二弧形段的宽度沿所述第二弧形段的中间向两侧逐渐减小，所述弧形连接部的宽度沿所述弧形连接部的中间向两侧逐渐减小。
  8. 根据权利要求3所述的口罩，其特征在于，所述第一弧形段、所述第二弧形段和所述弧形连接部均开设有通孔。
  9. 根据权利要求8所述的口罩，其特征在于，所述第一弧形段的通孔的横截面积沿所述第一弧形段的中间向两侧逐渐减小，所述第二弧形段的通孔的横截面积沿所述第二弧形段的中间向两侧逐渐减小，所述弧形连接部的通孔的横截面积沿所述弧形连接部的中间向两侧逐渐减小。
  10. 根据权利要求1-9中任一项所述的口罩，其特征在于，所述自适应构件的材料为 温变材料。
  11. 根据权利要求1-10中任一项所述的口罩，其特征在于，所述长度调节构件为调节带或套筒，所述调节带或所述套筒的材料为弹性材料，或者，所述调节带或所述套筒的材料为柔性材料。
  12. 根据权利要求1-11中任一项所述的口罩，其特征在于，所述自适应构件为可变形片。
  13. 根据权利要求3所述的口罩，其特征在于，所述弧形连接部设有第一中孔和第二中孔，所述第一自适应固定区设有第一左孔和第二左孔，所述第二自适应固定区设有第一右孔和第二右孔，所述调节带依次穿过所述第一左孔、所述第二左孔、所述第一中孔、所述第二中孔、所述第一右孔和所述第二右孔。
  14. 根据权利要求12所述的口罩，其特征在于，所述可变形片具有向下凸出的中心凸部、左中凸部和右中凸部，所述中心凸部向下凸出且位于所述可变形片的中心，所述左中凸部向下凸出、位于所述中心凸部的左侧且与所述中心凸部间隔开，所述右中凸部向下凸出、位于所述中心凸部的右侧且与所述中心凸部间隔开。
  15. 根据权利要求14所述的口罩，其特征在于，所述中心凸部为大体矩形，所述左中凸部和所述右中凸部中的每一个从上向下逐渐变窄且下边缘为弧形。
  16. 根据权利要求14或15所述的口罩，其特征在于，所述可变形片在上下方向上的宽度从所述左中凸部朝向所述可变形片的左端逐渐增大且从所述右中凸部朝向所述可变形片的右端逐渐增大。
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