CN218900613U - Close protective mask - Google Patents

Close protective mask Download PDF

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Publication number
CN218900613U
CN218900613U CN202223392069.2U CN202223392069U CN218900613U CN 218900613 U CN218900613 U CN 218900613U CN 202223392069 U CN202223392069 U CN 202223392069U CN 218900613 U CN218900613 U CN 218900613U
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China
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user
air
small
conduit
main body
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CN202223392069.2U
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Chinese (zh)
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蒋永生
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Individual
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Individual
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Abstract

The utility model discloses a skin care protective mask, which comprises: a main body provided with an air inlet; a small duct, one end of which is connected with the air inlet and the other end of which is led out to the outside; the small guide pipes are led out from the two sides of the main body towards the back surface, so that the small guide pipes are attached to the faces of the two sides of the user; this application is through connecting the small duct in air inlet department, and the small duct can introduce outside air and breathe, need not to breathe through filter equipment clean-up room air, and life is longer, and is laminating with user's face when using to wind behind the head back from the both sides of user's face and ventilate, the air duct is located user's back promptly, can not shelter from user's normal sight, also can not restrict the action range when user's operation, can effectively keep apart indoor gas in the work, and low cost, use in the more suitable industrial operation.

Description

Close protective mask
Technical Field
The utility model relates to the technical field of labor protection tools, in particular to a care protective mask.
Background
The mask is widely applied in the industrial field, is divided into various masks corresponding to different use scenes, is commonly provided with a breathing mask and is used for helping a user to isolate or purify surrounding air, is used for protecting the user from physical injury such as corrosion of chemical substances, physical impact of industrial environment or damage to the face and eyes during welding, and is also used for underwater operation.
Breathing masks are common in industry, workers often put themselves in toxic environments to work, for example, toxic gas can be generated in polishing, paint spraying, cleaning and other procedures, bad influence can be generated on human bodies during long-term operation, the breathing masks adopted in the prior art are generally all of purified air types, namely substances such as purified air or filtered air are arranged on the masks, the masks are still purified air which needs to be breathed on site by users, 100% of the bodies of the users cannot be harmless, the working procedures generally belong to long-term fixed-point work, the purified substances belong to easily exchanged parts, the long-term operation requirements cannot be met, part of the masks are communicated with the outside by adopting a conduit as an air inlet path, the conduit is generally connected to an air inlet, and the conduit is directly led out from the bottom or the top of the mask, but the conduit in the mode can shield the sight of the users, meanwhile, the operation action range of the users can be limited, and therefore, the breathing masks are to be improved.
Disclosure of Invention
The utility model relates to a care protective mask, which is mainly used for isolating toxic gas and can effectively solve the problem that an air duct can block the sight of a user when the mask is used in the prior art.
According to one aspect of the present utility model, there is provided a skin care mask comprising:
a main body provided with an air inlet;
one end of the small conduit is connected with the air inlet, and the other end of the small conduit is led out to the outside;
the small guide pipes are led out from the two sides of the main body towards the back face, and then the small guide pipes are attached to the faces of the two sides of the user.
In some embodiments, a long catheter is included, the small catheter is led out to the outside by being fixedly connected with the long catheter, and the long catheter is located above the user. Thus, the long duct communicates with the outside air and passes into the small duct, providing the normally required air.
In some embodiments, a slide bar is included, and a slip ring is slidable on the slide bar, with the long conduit being suspended above the user by the slip ring. Therefore, the user can not be limited by the long guide pipe during operation, and the sliding rod and the sliding ring are matched, so that the movement is more convenient.
In some embodiments, a filter cartridge is included that communicates with the interior of the body and is internally provided with a pneumatic valve. Thus, a preventive structure is provided, and when the air pressure valve is opened, a user can breathe through the filter box.
In some embodiments, the device comprises a first buckle for fixing the small catheter and a facing piece fixedly connected with the main body, wherein the small catheter is fixedly attached to the facing piece through the buckle and the facing piece are fixedly connected. Therefore, the veneering piece is provided, the veneering piece is attached to the face of a user in use, the small guide pipe is fixed to the veneering piece through the buckle, and the use of the user is safer.
In some embodiments, the air inlet is provided with a one-way clasp that is fixedly connected to the small conduit. Therefore, when the reverse air pressure exists in the mask, the one-way buckle is closed, and the small conduit is opened under normal conditions, so that the small conduit only has the air inlet function.
In some embodiments, an air outlet is included, with a single air outlet valve disposed therein. Therefore, the air outlet only has the function of one-way ventilation, and the air valve is closed during air suction.
In some embodiments, the device comprises a turntable capable of rotating in the horizontal direction and a tray for supporting the turntable, wherein one end of a sliding rod is fixedly connected with the turntable. Therefore, the moving range of the user in the horizontal direction can be increased, and the use mode is more flexible.
In some embodiments, a drive device is included that is coupled to the distal end of the long catheter. Thereby, external air is driven into the long duct by the driving device for the user to breathe.
In some embodiments, a second clasp is included for clasping the long conduit to the waist of the user. Thus, the initial end of the long catheter can be fixed on the user, and the user cannot stumble over the long catheter.
The utility model discloses a skin care protective mask, which has the following beneficial effects:
this application is through connecting the small duct in air inlet department, and the small duct can introduce outside air and breathe, need not to breathe through filter equipment clean-up room air, and life is longer, and is laminating with user's face when using to wind behind the head back from the both sides of user's face and ventilate, the air duct is located user's back promptly, can not shelter from user's normal sight, also can not restrict the action range when user's operation, can effectively keep apart indoor gas in the work, and low cost, use in the more suitable industrial operation.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a reference view of the usage status of the present utility model;
FIG. 3 is a schematic view of the internal structure of the air guide;
FIG. 4 is a schematic view of a one-way buckle;
FIG. 5 is a schematic view of the structure of the present utility model with a slide bar and slip ring;
FIG. 6 is a schematic view of the structure of the turntable of the present utility model;
in the figure: 1-main body, 2-small conduit, 3-long conduit, 11-sealing layer, 41-first bandage, 42-second bandage, 5-facing piece, 61-first buckle, 62-second buckle, 7-Y-pipe, 8-driving device, 12-air guide piece, 121-adsorption cotton piece, 122-active carbon, 123-single air outlet valve, 13-one-way buckle, 131-one-way inner valve film, 14-filter box, 91-slide bar, 92-slip ring, 93-turntable, 94-tray and 95-baffle.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
The utility model relates to a skin protective mask, which is a breathing mask for industrial operation, can effectively isolate toxic gas in the operation by ventilating in an external air introducing mode, is mainly ventilated through a conduit, is suitable for being applied to a long-term fixed-point operation environment, and has long service life.
The utility model is described in further detail below with reference to the accompanying drawings.
Fig. 1 schematically shows an embodiment of a skin protection mask according to the utility model. As shown in fig. 1, the application includes a main body 1, a small duct 2, a long duct 3, and a strap, wherein the main body 1 is a main part worn by a user, is an important part for providing ventilation, and the long duct 3 mainly introduces external air into the small duct 2 by cooperating with the small duct 2, and the strap can bind the main body 1 to the head of the user, thus forming a complete mask capable of being connected with external air.
The main body 1 can adopt the shape of a conventional gas mask, namely, a convex oval structure is seen from the side, the inside of the main body is a hollow concave structure, the main body can wrap the mouth and the nose of a user in use, the main body can be purchased from the market directly for convenience, and the edge of the main body 1, which is in close contact with the user, is provided with a sealing layer 11, can adopt a silica gel material, and is required to surround the back of the main body 1, namely, the sealing layer 11 is arranged at the edge of the opening of the concave side of the main body 1, so that the air leakage can not happen through the sealing layer 11 after the main body is worn, namely, the main body 1 is also provided with air inlets, and in the embodiment, two air inlets are symmetrically arranged at the left side and the right side of the main body 1 and are fixedly connected with one end of the small guide pipe 2;
the small conduit 2 adopts a hose, the caliber is generally 6 branch pipes, the small conduit 2 is provided with two air inlets which are respectively connected with the left side and the right side, the other end of the small conduit 2 winds to the back side of the main body 1, namely one side of the concave inner part of the main body 1, meanwhile, the small conduit 2 is led out from the two sides of the main body 1 and is attached to the back side of the main body 1, namely after the small conduit 2 is worn by a user, the middle part of the small conduit 2 is attached to the face of the user, is generally attached to the lower part of the eyes of the user and is led out from the upper part of the ears, and one end led out of the small conduit 2 is positioned at the back side of the head of the user, namely the position of a rear brain spoon, so that the position of the small conduit 2 is not used for shielding the sight of the user, the led out position of the small conduit 2 is opposite to the front side of the user, the action range of the small conduit 2 during operation of the user is not limited, and the small conduit 2 is led out from the position of the rear brain spoon of the user to the external environment through the long conduit 3;
the long guide pipe 3 is also a hose with a caliber larger than that of the small guide pipe 2, and a 1 inch hose is adopted, in the embodiment, the long guide pipe 3 is provided with one long guide pipe, namely, air is introduced from the external environment through the long guide pipe 3, then air flow is branched into the 2 small guide pipes 2 and finally reaches the main body 1 for breathing of a user, the large caliber can also be adopted to provide proper air pressure, the long guide pipe 3 is fixedly connected with the small guide pipe 2 through a movable buckle, the long guide pipe 3 is an air introducing pipe on the back of the user, the long guide pipe 3 in the embodiment needs to be fixed above the top of the head of the user, the user is prevented from tripping when the user pushes backwards, and the operations such as paint spraying, polishing and the like can be realized in an all-around and unlimited manner; when in actual use, the tail end of the long conduit 3, namely the air inlet end, can be placed in an environment with a plant bonsai, can also be used for placing sachets, perfume or air fresheners and the like, can improve the breath experience of a user, can also be added with a filtering system in a dirty environment, and can prevent the air inlet end from being polluted.
In addition, the mask is fixed on the head of a user through the straps, elastic materials can be adopted, the straps comprise the first strap 41 and the second strap 42, the first strap 41 is of an oval structure, the first strap 41 is positioned at the top of the head of the user when in use and is a main stressed piece for fixing the main body 1, the fixed part extends out of the first strap 41, the second strap 42 is of a common ribbon structure, two ends of the second strap 42 are respectively fixedly connected at the lower side edge of the main body 1 and are provided with a conventional detachable elastic structure, the second strap 42 is mainly used for fixing the neck of the user when in use and is matched with the first strap 41, so that the main body 1 is firmly attached to the mouth and nose part of the user and is not easy to fall and leak, meanwhile, the first strap 41 and the second strap 42 are fixed through buckles, and the buckles are common small buckles and are generally matched with the straps for use.
Further, as shown in fig. 2, the veneers 5 are arranged on two sides of the main body 1, the veneers 5 are in a curved lamellar structure, and can be attached to the face of a user when in use, so that the whole structure of the mask is more compact, the veneers 5 can be made of soft materials, such as silica gel, or can be made of plastics directly, the veneers 5 are fixed on two sides of the main body 1 and extend to the ear positions of the user, and avoid the eye positions, so as to prevent shielding, in addition, the veneers 5 are fixedly connected with the first buckles 61, a circular ring structure is arranged in the middle of the first buckles 61, and the small guide pipes 2 can be inserted into the first buckles 61, namely are fixedly connected with the veneers 5 through the first buckles 61, and the small guide pipes 2 are attached to two sides of the face of the user, so that the veneers 5 are attached, discomfort of the user when in wearing can not be increased, so that air leakage gaps can be avoided, and the sight of the user can not be shielded; thus, in actual use, first strap 41 may be secured to the end of face piece 5 by the above-described buckle.
Preferably, the present disclosure further includes a furcate tube 7, which may be disposed on the back of the head of the user, and since the small conduit 2 is ventilated after being branched and drained through the long conduit 3, the addition of the furcate tube 7 facilitates the branched and drained operation and installation, and when in use, the small conduit 2 is connected with the two small caliber ends of the furcate tube 7, and the long conduit 3 is connected with the one large caliber end of the furcate tube 7, and both the two small caliber ends are connected by the movable buckle, and the movable buckle is a conventional connection structure, and generally, the furcate tube 7 is dispensed at the same time when purchasing.
Preferably, as shown in fig. 5, the present disclosure relates to a skin care mask, which further includes a driving device 8, where the driving device 8 is a device for driving external air flow to be introduced, and may use a fan, and is fixedly connected with the end of the long duct 3, in practical use, the end of the long duct 3 needs to be led out to the outside, so as to ensure that a user cannot breathe dirty air in the room, and the driving device 8 is beneficial to quickly introduce the external air into the main body 1, and simultaneously provides a suitable air flow, so that a suitable power supply is required to be provided for the driving device 8, and in this embodiment, a small common fan is used for driving and air supply, and the general power is 40-60W, and after normal use, the cost is low due to the electric charge of several pieces of hair money; in some embodiments, in order to leave the drive device 8 unrestricted by power, a mobile power source, such as a backpack-type power source using electricity storage, may be used and purchased directly.
Further, as shown in fig. 3, the main body 1 includes air outlets, which can facilitate the user to exhale air from the main body 1, in this embodiment, two air outlets are provided, which are disposed on two sides of the main body 1 and can be located below the air inlets; preferably, the air outlet is set to be a single-guide air outlet, which comprises an air guide piece 12, and is of a cylindrical structure, the diameter is not less than 20mm, the lower part of the air guide piece is of a threaded structure, the air guide piece can be fixedly connected to the air outlet through threaded fit, a single air outlet valve 123 is arranged in the air guide piece 12, namely, the air guide piece can only be ventilated unidirectionally, when the air flow is exhaled, the single air outlet valve 123 is opened, and when the air flow is inhaled, the single air outlet valve 123 is closed, so that the air outlet can only be ventilated outwards through being connected with the air guide piece 12, in addition, adsorption cotton pieces 121 are further arranged in the air guide piece 12, are respectively arranged at two ends in the air guide piece 12, activated carbon 122 is arranged between the adsorption cotton pieces 121, and a small amount of toxic air is prevented from entering the main body 1.
Further, as shown in fig. 4, the unidirectional fastener 13 is arranged on the air inlet, the whole columnar body is formed, the unidirectional fastener 13 can be installed inside the air inlet, a movable connector is arranged at the top end of the unidirectional fastener 13 and can be fixedly connected with the small conduit 2, the unidirectional inner valve film 131 is arranged inside the unidirectional fastener 13, the unidirectional fastener is used in the prior art, the small conduit 2 is an air inlet pipeline, normal air pressure is generated under the normal ventilation condition, the unidirectional fastener can be normally opened, when the unidirectional fastener is in reverse air pressure, the unidirectional fastener can be closed, for example, when a fault occurs, the unidirectional fastener can be closed when a user exhales air, the unidirectional fastener is opened when the user inhales air, and the exhaled air can be led out through the air outlet.
Further, as shown in fig. 2, a skin-care mask of the present utility model comprises a filter cartridge 14 installed in the middle of a main body 1 and at a position 45 ° downward from the horizontal line of the side surface of the main body 1, the filter cartridge 14 being communicated with the inside of the main body 1, the user breathing the ambient air purified by the filter cartridge 14, the filter cartridge 14 being provided with a purifying substance such as cotton chips and adsorbates, etc., being able to perform a normal short-term purifying air action, the filter cartridge 14 being connected to the main body 1 in a living interface manner, the filter cartridge 14 being provided with a pneumatic valve inside, the filter cartridge 14 being opened when a negative pressure is generated inside the main body 1, the user breathing through the filter cartridge 14, the normal pneumatic pressure being closed, so that the filter cartridge 14 is normally closed, the user inhaling from the air inlet, and in the event of a malfunction such as an air supply from the air inlet being disabled, the user generating a negative pressure inside the main body 1 after inhaling, the pneumatic valve being opened, the user being able to breathe normally through the filter cartridge 14, the above-mentioned structure being a preventive measure structure, the user not being able to perform breathing after the malfunction, causing choking; in some embodiments, the strength of the air pressure valve can be increased, for example, to 2-3 times the strength of the air pressure valve when the air pressure valve is in a negative pressure state, so as to supply air from the air inlet as much as possible, reduce the situation that the filter box 14 is opened in normal use, and only generate a stronger negative pressure in special situations to open the filter box 14.
In some embodiments, as shown in fig. 5, the disclosure further includes a sliding rod 91 and a sliding ring 92, the sliding rod 91 may be a light rod, two ends of the sliding rod 91 may be fixed on a wall surface and higher than the top position of a user, the sliding ring 92 may be provided with a plurality of annular holes, and may be mounted on the sliding rod 91, so that the sliding ring 92 may slide relatively on the sliding rod 91, and the bottom part of the sliding ring 92 may suspend the long conduit 3 in the air, may adopt a hook structure, may also directly adopt an annular structure, and the long conduit 3 may be inserted, so that the long conduit 3 may be suspended on the top of the user through the cooperation of the sliding rod 91 and the sliding ring 92, the long conduit 3 may not be pulled on the ground, in practical use, the long conduit 3 may be led out from the back position of the user's brain, the long conduit 3 may be suspended in sections at the top position of the user's head, the user may not be tripped by the long conduit 3 or the sliding rod 91 when the user moves back or rotates, and the length of the long conduit 3 and the sliding rod may be increased according to the actual use movement area, thereby achieving an omnibearing safety operation; in some embodiments, as shown in fig. 6, the sliding rod 91 may also adopt a structure with one fixed end and one free rotation, including a turntable 93, a tray 94 and a baffle 95, where the tray 94 may be fixed on a wall and used for supporting the turntable 93, the turntable 93 may rotate in a horizontal direction, one end of the sliding rod 91 is fixedly connected to the turntable 93, the other end is a free end, and the baffle 95 is installed at the free end of the sliding rod 91, and the baffle 95 may be used for limiting the sliding ring 92, so that the sliding ring 92 will not fall from the sliding rod 91, and therefore, when a user moves left and right, the sliding rod 91 is deflected by rotation of the turntable 93, thereby increasing the moving range of the user;
further, as shown in fig. 5, a second buckle 62 is added on the long conduit 3, an annular structure is arranged in the middle of the second buckle 62, the long conduit 3 can be inserted on the second buckle 62, and the second buckle 62 can be buckled on the waist of a user, for example, the waist belt of the user, or a waist belt for adapting to the second buckle 62 is added, a simple buckle connection structure is adopted, the second buckle 62 is convenient to disassemble, for example, the second buckle 62 is used for clamping the initial section of the connection of the long conduit 3 and the small conduit 2, the long conduit 3 of the section is tightly attached to the back of the user, and further, the long conduit 3 is prevented from bending to cause the fault of closing an air inlet channel, in addition, the second buckle 62 can further reduce the situation that the long conduit 3 is wound on the user, and because the long conduit 3 is mostly suspended in the air, the user is easy to pull when moving, too much length can be wound on the user, and the long conduit 3 can be always located in the back direction of the user, and the user cannot trip.
In some embodiments, an eye shield may be added and fixedly connected to the upper part of the main body 1 to prevent harmful substances from eroding eyes.
In some embodiments, to increase the air flow in the ducts, a driving device 8, such as a fan, may be connected to a transformer, to control the amount of wind generated by the fan by adjusting a knob on the transformer, to thereby control the air flow in each duct, to provide the desired air flow in the duct; the length of the fan blade of the fan can be increased, higher air pressure is generated during rotation, or a speed increasing gear is added into the fan, so that the rotating speed of the fan is improved.
The working principle of the utility model is as follows: during normal operation, air flow firstly enters the long guide pipe 3 through the driving of the fan and then flows into the Y-pipe 7, branches from the inside of the Y-pipe 7 and flows into the small guide pipes 2 on two sides of the two joint heads, and flows through the unidirectional buckles 13 (air inlets) respectively, namely, the air flow of the main body 1 is provided for breathing of a user, the air exhaled by the user flows out of the air guide piece (air outlet), namely, flows out unidirectionally and finally is discharged outdoors, the functions of unidirectionally flowing in and unidirectionally discharging are realized in the main body 1 in the whole process, the air inlet or the air outlet can not be simultaneously used for air inlet or air outlet, negative pressure can not be generated, and the air pressure valve in the filter box 14 is always closed, so that the air circulation is ensured; when a fault occurs, the first condition is that the user inhales and can supply air from the air inlet, the opening strength of the air pressure valve in the filter box 14 is 2-3 times that of the normal air inlet valve, so that even if a certain negative pressure exists in the main body 1, the air pressure valve is not opened, the air pressure valve is still discharged through the air guide (the air outlet) during exhalation, and the second condition is that the fault has caused the air inlet to be blocked, for example, no air flows in the long guide pipe 3, or other reasons cause that the air cannot be supplied from the air inlet, when the user inhales, the air pressure valve in the main body 1 is further opened, and when the air flows into the filter box 14 to provide the user inhalation, the air exhaled by the user is discharged from the air outlet, and the air guide can be used as a short breathing mode.
In summary, compared with the common mask, the mask is more comfortable to wear, the common mask provides positive and negative pressure through breathing of a user, so that the valve in the air passage is opened and closed, the lung function of a human body is lost after long-time use, and the gas in the mask is updated through the breathing of the user, so that the mask has poor gas replacement effect, discomfort such as fatigue and even choking feeling is generated when the user uses the mask for a long time, the mask provided by the utility model adopts the principle of unidirectional inflow and unidirectional outflow of the gas, accords with the principle of direct inflow and outflow of the air flow, has better ventilation property of the gas, is smoother during breathing, and compared with the prior art, the filter box is used without manual adjustment, and is more flexible through spontaneous opening of the negative pressure when necessary, so that the mask has great progress.
In the foregoing, only the preferred embodiments of the present utility model have been described, and all possible combinations of the technical features of the embodiments are not described, but rather are not limited to any form, so that any modifications, equivalent variations and modifications made to the embodiments according to the technical principles of the present utility model fall within the scope of the technical aspects of the present utility model.

Claims (10)

1. A skin-care protective mask, comprising:
a main body provided with an air inlet;
a small duct, one end of which is connected with the air inlet and the other end of which is led out to the outside;
the small guide pipes are led out from the two sides of the main body towards the back face, and then the small guide pipes are attached to the faces of the two sides of the user.
2. A skin care mask according to claim 1, comprising a long duct, said small duct being led out to the outside by being fixedly connected with the long duct, and said long duct being located above the user.
3. A skin care mask as claimed in claim 2, comprising a slide bar and a slide ring slidable on the slide bar, said long conduit being suspended above the user by said slide ring.
4. The face mask of claim 1, comprising a filter cartridge in communication with the interior of the body and having an air pressure valve therein.
5. The face mask of claim 1, comprising a first fastener for securing the small conduit, and a facing fixedly coupled to the main body, the small conduit being fixedly coupled to the facing by the fastener.
6. The skin care mask of claim 1, wherein the air inlet is provided with a one-way clip fixedly connected to the small conduit.
7. A face mask according to claim 1, comprising an air outlet provided with a single air outlet valve.
8. A face mask according to claim 3, comprising a turntable rotatable in a horizontal direction, and a tray for supporting the turntable, one end of the slide bar being fixedly connected to the turntable.
9. A skin care mask as claimed in claim 2, comprising a drive device which is connected to the end of the long conduit.
10. The skin care mask of claim 2, comprising a second clip for clipping the long conduit to the waist of the user.
CN202223392069.2U 2022-12-15 2022-12-15 Close protective mask Active CN218900613U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202223392069.2U CN218900613U (en) 2022-12-15 2022-12-15 Close protective mask

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202223392069.2U CN218900613U (en) 2022-12-15 2022-12-15 Close protective mask

Publications (1)

Publication Number Publication Date
CN218900613U true CN218900613U (en) 2023-04-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202223392069.2U Active CN218900613U (en) 2022-12-15 2022-12-15 Close protective mask

Country Status (1)

Country Link
CN (1) CN218900613U (en)

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