CN115211621A - Protective tool and control method thereof - Google Patents

Abstract

The invention discloses a protective appliance and a control method thereof, wherein the protective appliance is a mask or a face mask, and the protective appliance comprises: the filter cover is used for forming a breathing cavity with the face of a user, the filter cover is provided with an air inlet communicated with the breathing cavity, at least part of the peripheral wall of the filter cover is spaced from the face of the user to form an air outlet, and the air outlet is communicated with the breathing cavity; and the air suction unit is arranged in the air inlet and is used for filtering outside air and then conveying the air to the breathing cavity. According to the protective tool, the air suction unit can be used for conveying outside air into the breathing cavity, so that a positive pressure space is formed in the breathing cavity, and a user can be prevented from feeling oppressed during air suction or air exhalation. And through setting up the malleation space, also no longer need guarantee the leakproofness between filter mantle perisporium and the face, protective apparatus also need not to use great straining force when wearing, can alleviate the uncomfortable sense that pressure brought.

Description

Protective tool and control method thereof

Technical Field

The invention relates to the technical field of protective articles, in particular to a protective tool and a control method thereof.

Background

With the emphasis on respiratory diseases, protective equipment (such as masks) are used more and more frequently during production and life. In the correlation technique, adopt sealed design between protective tool and the user's face, form sealed chamber between protective tool and the face, the user inhales when using and exhales and has the sense of suffocating, in order to ensure sealed chamber's leakproofness moreover, need use great tension between protective tool and the face to make both closely laminate, has still brought great oppression sense for the user from this.

Disclosure of Invention

The invention provides a protective tool which can eliminate the feeling of suffocation of a user when the protective tool is worn and does not have large oppressive feeling between the protective tool and the face.

The invention also provides a control method of the protective appliance, and the control method is used for controlling the protective appliance.

According to the protective gear of the embodiment of the invention, the protective gear is a mask or a face mask, and the protective gear comprises: a filter mask for forming a breathing cavity with the face of a user, the filter mask being provided with an air inlet in communication with the breathing cavity, at least part of a peripheral wall of the filter mask being spaced from the face of the user to form an air outlet in communication with the breathing cavity; and the air suction unit is arranged in the air inlet and used for filtering outside air and then conveying the filtered air to the breathing cavity.

According to the protective tool provided by the embodiment of the invention, the air suction unit is arranged on the filter cover, and the air suction unit can be used for conveying outside air into the breathing cavity, so that a positive pressure space is formed in the breathing cavity, when a user inhales air, the user can inhale the air more easily, and the air suction resistance can be reduced. And through setting up the malleation space, also no longer need guarantee the leakproofness between filter mantle perisporium and the face, protective apparatus also need not to use great straining force when wearing, can alleviate the uncomfortable sense that pressure brought.

In some embodiments of the invention, at least one of the side wall and the bottom wall of the filter housing is adapted to be spaced from the face of the user to form a vent.

In some embodiments of the invention, the inside of the filter housing is provided with a first sealing strip, the first sealing strip extends along the transverse direction of the filter housing, the first sealing strip is arranged adjacent to the top wall of the filter housing, and the side of the first sealing strip facing away from the filter housing is used for abutting against the face of a user.

In some embodiments of the invention, the two ends of the first sealing strip are provided with second sealing strips, the free ends of the second sealing strips extend obliquely towards the direction away from the top wall of the filter cover, and the two second sealing strips extend obliquely towards the direction away from each other in the direction from the top wall to the bottom wall of the filter cover.

In some embodiments of the invention, the protective gear further comprises: the support column is arranged close to the bottom wall or the side wall of the filter cover, one end of the support column is connected with the inner side of the filter cover, and the other end of the support column is used for abutting against the face of a user.

In some embodiments of the invention, the support column is provided in plurality, and the support columns are arranged at intervals in the extension direction of the side wall and the bottom wall of the filter cover, and the support columns are suitable for spacing the side wall and the bottom wall of the filter cover from the face of a user.

In some embodiments of the invention, the support column comprises: one end of the first connecting part is connected with the inner side of the filter cover; the second connecting portion, the one end of second connecting portion with the other end of first connecting portion is connected, the other end of second connecting portion is used for supporting in user's face, wherein, the cross sectional area of second connecting portion is greater than the cross sectional area of first connecting portion.

In some embodiments of the present invention, a support strip is disposed on an inner side of the filter cover, the support strip is disposed adjacent to a side wall and/or a bottom wall of the filter cover, a side of the support strip facing away from the filter cover is used for abutting against a face of a user, the support strip is provided with an exhaust passage, one end of the exhaust passage is communicated with the breathing cavity, and the other end of the exhaust passage is communicated with the outside through the exhaust port.

In some embodiments of the invention, the suction unit comprises: the fixed seat is arranged in the air inlet, the fixed seat defines a mounting cavity, and two opposite ends of the mounting cavity are respectively communicated with the breathing cavity and the outside; the filtering module is arranged in the mounting cavity; and the fan module is arranged in the mounting cavity and is positioned at the upstream or the downstream of the filtering module.

In some embodiments of the invention, the protective gear further comprises: the automatically controlled unit, the automatically controlled unit is established the inboard of filter mantle, the automatically controlled unit with inhale the unit electricity and connect, and/or, protective apparatus still includes: the fixing bands are connected with the filtering cover, the number of the fixing bands is two, and the two fixing bands are spaced in the transverse direction or the longitudinal direction of the filtering cover.

According to the control method of the protective tool, the protective tool is the protective tool, and the method comprises the following steps: detecting air pressure within the breathing cavity; when the air pressure is greater than or equal to the preset pressure, controlling the air intake of the air suction unit to be kept unchanged; and when the air pressure is smaller than the preset pressure, controlling the air intake of the air suction unit to increase.

According to the control method of the protective tool, the air suction unit is arranged on the filter cover, and outside air can be conveyed into the breathing cavity by the air suction unit, so that the positive pressure space is formed in the breathing cavity, when a user inhales air, the user can inhale the air more easily, the air suction resistance can be reduced, at least part of the peripheral wall of the filter cover is spaced from the face of the user to form the exhaust port, and the air in the breathing cavity can be exhausted to the outside through the exhaust port, so that the phenomenon that the air is exhausted to the outside in a mode of penetrating through the filter cover can be avoided, the exhaust resistance can be reduced, and the feeling of oppression of the user during inspiration or expiration can be avoided. And through setting up the malleation space, also no longer need guarantee the leakproofness between filter mantle perisporium and the face, the protection apparatus also need not to use great tension when wearing, can alleviate the uncomfortable sense that pressure brought.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a schematic view of a protective gear according to an embodiment of the invention when worn;

FIG. 2 is a schematic view of a protective gear according to an embodiment of the invention in another orientation when worn;

FIG. 3 is a schematic view of a protective gear according to an embodiment of the invention in yet another orientation when worn;

FIG. 4 is a schematic structural view of a protective gear according to an embodiment of the invention;

FIG. 5 is a partial exploded view of the protective gear of FIG. 4;

FIG. 6 is a partial exploded view of the shielding tool of FIG. 4 in another orientation;

FIG. 7 is a schematic structural view of a protective gear according to another embodiment of the invention;

FIG. 8 is a schematic view of a protective gear according to yet another embodiment of the invention, when worn;

FIG. 9 is a schematic view of the protective gear of FIG. 8 in another orientation when worn;

fig. 10 is a flowchart of a control method of a protective gear according to an embodiment of the present invention.

Reference numerals are as follows:

the protective device 100, the filter housing 1,

the intake port 11, the exhaust port 12, the side wall 131, the bottom wall 132, the top wall 133,

the air suction unit 2, the fixed seat 21, the installation cavity 211,

a filter module 22, a fan module 23, a housing 24,

the first sealing strip 31, the second sealing strip 32,

the support column 4, the first connecting portion 41, the second connecting portion 42,

the support bar 5, the exhaust passage 51, the electronic control unit 6, the pressure sensor 61,

fixing strap 7, face 200.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.

A protective tool 100 according to an embodiment of the present invention is described below with reference to the drawings. The protective device 100 may be a mask or a face mask.

As shown in fig. 1, a protective gear 100 according to an embodiment of the present invention includes: a filter housing 1 and a suction unit 2. It will be appreciated that the filter housing 1 is a gas permeable housing which can filter air. After the filtration of filter mantle 1, can realize the filtration to micronic dust, bacterium and virus etc to can guarantee the cleanliness factor of the air that gets into in the breathing cavity, and then guarantee that user's breathing is healthy.

Specifically, as shown in fig. 2 and 3, the filter mask 1 and the face 200 of the user form a breathing cavity, the filter mask 1 is provided with an air inlet 11 communicated with the breathing cavity, the inhalation unit 2 is arranged in the air inlet 11, and the inhalation unit 2 is used for filtering outside air and then delivering the air to the breathing cavity. It can be understood that the filter mask 1 covers the face 200 of the human body, the filter mask 1 can shield the nose and mouth of the face 200, the filter mask 1 and the face 200 of the user can form a breathing cavity, the air filtered by the filter mask 1 or the inhalation unit 2 can enter the breathing cavity, and the nose and mouth of the user can inhale the filtered air from the breathing cavity.

In the embodiment of the invention, the air suction unit 2 is arranged in the air inlet 11 of the filter cover 1, and outside air can enter the breathing cavity after being filtered by the air suction unit 2, so that a positive pressure space is formed in the breathing cavity, and when a user inhales, the user can inhale the air more easily, thereby reducing the air suction resistance and improving the use comfort of the user. Moreover, the positive pressure space can ensure that the breathing cavity is not doped with external unfiltered air, and ensures that the breathing cavity is always clean filtered air in the breathing process. In addition, through setting up the malleation space, need not to guarantee the leakproofness between filter mantle 1 perisporium and face 200, also need not to use great tension when wearing, the uncomfortable sense that can alleviate pressure and bring.

It should be noted that, the opening or closing of the inhalation unit 2 can be controlled, and a user can select to open the inhalation unit 2 according to needs, and then the inhalation unit 2 is used to deliver the filtered outside air to the breathing cavity. Of course, the user can also choose to close the inhalation unit 2 as desired, and the outside air can enter the inhalation cavity after being filtered by the filter cover 1.

Specifically, in one example of the present invention, the filter sock 1 may have a single-layer structure or a multi-layer structure. The filter cover 1 can comprise melt-blown cloth, the melt-blown cloth mainly takes polypropylene as a main raw material, the fiber diameter can reach 1-5 microns, the gaps are large, the structure is fluffy, the anti-wrinkle capability is good, and the number and the surface area of fibers in unit area are increased by the superfine fibers with the unique capillary structure, so that the melt-blown cloth has good filterability.

As shown in fig. 3 and 4, at least part of the peripheral wall of the filter housing 1 is spaced from the face 200 of the user to form an exhaust port 12, the exhaust port 12 communicating with the breathing cavity. It will be appreciated that air within the breathing cavity can be vented to the environment through the vent 12, thereby preventing air from being vented to the environment through the filter sock 1 and reducing resistance to venting. And through setting up inspiration unit 2 and exhaust port 12, when guaranteeing to admit air and exhaust the patency, can also form relatively stable positive pressure in breathing the cavity, avoid the user to appear oppressive sense when breathing in or exhaling.

In one embodiment of the invention, as shown in fig. 3 and 4, at least one of the side wall 131 and the bottom wall 132 of the filter sock 1 is spaced from the face 200 of the user to form the vent 12, the vent 12 being in communication with the breathing cavity. In other words, it may be that only the side wall 131 of the filter sock 1 is spaced from the user's face 200 to form the outlet 12 in communication with the breathing cavity; alternatively, it may be that only the bottom wall 132 of the filter sock 1 is spaced from the user's face 200 to form the exhaust port 12 communicating with the breathing cavity; alternatively, it may be that only the bottom wall 132 of the filter sock 1 and the bottom wall 132 are both spaced from the user's face 200 to form the exhaust port 12 communicating with the breathing cavity.

It will be appreciated that at least one of the side wall 131 and the bottom wall 132 of the filter housing 1 is spaced from the face 200 of the user to form the exhaust port 12, and that the air exhaled by the user and the positive pressure air delivered into the breathing cavity by the inhalation unit 2 can be smoothly exhausted through the exhaust port 12, so as to avoid the feeling of oppression to the user, and further improve the comfort of the user. In addition, by spacing at least one of the side wall 131 and the bottom wall 132 of the filter housing 1 from the face 200 of the user to form the air outlet 12, the area of the fit of the filter housing 1 to the face 200 can be reduced, reducing the area of pressure, and thus improving the comfort of the user.

It should be noted that the filter housing 1 has two opposite side walls 131, and one of the two side walls 131 may be spaced apart from the face 200 of the user to form the air outlet 12; alternatively, it is also possible that both side walls 131 are spaced apart from the user's face 200 and form two opposing exhaust ports 12.

For example, the filter housing 1 has a left side wall 131 and a right side wall 131 that are oppositely disposed. In one example of the present invention, only the left side wall 131 of the filter sock 1 is spaced from the user's face 200 to form the left side air outlet 12; in another example of the invention, only the right side wall 131 of the filter sock 1 is spaced from the user's face 200 to form the right side exhaust port 12; in yet another example of the present invention, the left side wall 131 of the filter sock 1 is spaced apart from the user's face 200 to form the left side exhaust port 12, while the right side wall 131 of the filter sock 1 is spaced apart from the user's face 200 to form the right side exhaust port 12.

Moreover, in the three embodiments described above, the bottom wall 132 of the filter sock 1 may be spaced from the face 200 of the user to form a bottom exhaust vent 12 in communication with the breathing cavity; of course, the bottom wall 132 of the filter housing 1 may not be provided with the exhaust port 12. For example, in one specific example of the present invention, the left side wall 131 of the filter cage 1 is spaced apart from the user's face 200 to form the left side air outlet 12, the right side wall 131 of the filter cage 1 is spaced apart from the user's face 200 to form the right side air outlet 12, and the bottom wall 132 of the filter cage 1 is spaced apart from the user's face 200 to form the bottom side air outlet 12.

In one embodiment of the present invention, as shown in fig. 2 and 4, the suction unit 2 may be provided in plurality, and the corresponding air inlet 11 is also provided in plurality, and the plurality of air inlets 11 and the plurality of suction units 2 are matched in a one-to-one correspondence. When the user uses the air suction unit, the opening number and the opening rotating speed of the air suction unit 2 can be selectively controlled according to needs.

According to the protective tool 100 provided by the embodiment of the invention, the air suction unit 2 is arranged on the filter cover 1, and the air suction unit 2 can be used for conveying outside air into the breathing cavity, so that a positive pressure space is formed in the breathing cavity, when a user inhales air, the user can inhale the air more easily, and the resistance to air suction can be reduced, at least part of the peripheral wall of the filter cover 1 is separated from the face 200 of the user to form the exhaust port 12, and the air in the breathing cavity can be exhausted to the outside through the exhaust port 12, so that the air can be prevented from being exhausted to the outside in a mode of penetrating through the filter cover 1, the resistance to exhaust can be reduced, and the sense of oppression of the user during air suction or exhalation can be avoided. Moreover, by providing the positive pressure space, the sealing property between the peripheral wall of the filter cover 1 and the face portion 200 does not need to be ensured, and the protective device 100 does not need to use a large tightening force when worn, and can relieve the uncomfortable feeling caused by pressure.

In some embodiments of the invention, as shown in fig. 2 and 5, the inside of the filter sock 1 is provided with a first sealing strip 31, the first sealing strip 31 extends in a transverse direction of the filter sock 1, and the first sealing strip 31 is arranged adjacent to the top wall 133 of the filter sock 1, and a side of the first sealing strip 31 facing away from the filter sock 1 is used to abut against the face 200 of the user. It can be understood that the first sealing strip 31 is arranged on the inner side of the filter housing 1, and the first sealing strip 31 extends along the transverse direction at a position adjacent to the top wall 133 of the filter housing 1, so that the first sealing strip 31 can shield the air flow exhaled from the mouth and nose, thereby effectively preventing the air flow from upwards fleeing out to blow to eyes or causing fogging problems to glasses, and further improving the comfort of users.

In some embodiments of the invention, the first sealing strip 31 and the inner side of the filter housing 1 may be connected by bonding. It will be appreciated that the adhesive connection has the advantage of being simple in construction and easy to assemble, by which a tight connection of the first sealing strip 31 to the filter housing 1 can be achieved. In addition, the cost can be reduced while the connection strength of the first sealing strip 31 and the filter cover 1 is ensured.

In one example of the present invention, one of the outer side surface of the first sealing strip 31 and the inner side surface of the filter housing 1 is provided with a 3M adhesive tape, the 3M adhesive tape may be provided with a plurality of segments, and the plurality of segments of the 3M adhesive tape may be provided at intervals in the extending direction of the first sealing strip 31. Specifically, a plurality of pieces of 3M adhesive tape may be provided on the first sealing tape 31, and when the first sealing tape 31 is bonded to the filter housing 1, only some of the plurality of pieces of 3M adhesive tape may be selected for bonding. Therefore, the first sealing strip 31 and the filter cover 1 can be repeatedly bonded and utilized, and the repeated bonding and utilization can be understood that when the first sealing strip 31 and the filter cover 1 are bonded for the first time, a plurality of sections of 3M adhesive tapes can be selected for bonding, and along with subsequent use, when the first sealing strip 31 needs to be replaced, the newly replaced first sealing strip 31 can continuously select a plurality of sections of previously unused 3M adhesive tapes for bonding, so that a user does not need to buy the 3M adhesive tapes for bonding.

In another example of the present invention, one of the outer side surface of the first sealing strip 31 and the inner side surface of the filter cover 1 is provided with a male velcro tape, and the other of the outer side surface of the first sealing strip 31 and the inner side surface of the filter cover 1 is provided with a female velcro tape, and the connection between the first sealing strip 31 and the filter cover 1 can be achieved by the adhesion of the male velcro tape and the female velcro tape. It can be understood that the sub magic tape and the female magic tape have the advantages of simple structure and easy assembly, and the tight connection of the first sealing strip 31 and the filter housing 1 can be realized through the matching of the sub magic tape and the female magic tape. In addition, the cost can be reduced while the connection strength of the first sealing strip 31 and the filter cover 1 is ensured.

In some embodiments of the invention, as shown in fig. 4 and 5, the first sealing strip 31 is provided with a second sealing strip 32 at both ends, the free end of the second sealing strip 32 extends obliquely away from the top wall 133 of the filter sock 1, and the two second sealing strips 32 extend obliquely away from each other in the direction from the top wall 133 to the bottom wall 132 of the filter sock 1. It can be understood that the second sealing strip 32 can increase the shielding area for water vapor, and the second sealing strip 32 can further shield the airflow opposite to the two ends of the first sealing strip 31, so as to further shield and protect the top airflow. The second sealing strip 32 also has a flow guiding function, and the air flow blocked by the first sealing strip 31 moves to other positions along the second sealing strip 32.

In some embodiments of the present invention, as shown in fig. 4 and 5, the first sealing tape 31 and the second sealing tape 32 are an integrally formed member. From this, integrated into one piece's structure not only can guarantee first sealing strip 31 and second sealing strip 32, the stability of performance to convenient shaping, it is simple to make, and saved unnecessary assembly part and connection process moreover, the assembly efficiency of first sealing strip 31 and second sealing strip 32 has been improved greatly, guarantee the reliability that first sealing strip 31 and second sealing strip 32 are connected, moreover, integrated into one piece's structure's bulk strength and stability are higher, it is more convenient to assemble, the life-span is longer.

In some embodiments of the present invention, as shown in fig. 2, 4 and 5, the protective gear 100 further comprises: a support column 4, the support column 4 being disposed adjacent to the bottom wall 132 or the side wall 131 of the filter housing 1, one end of the support column 4 being connected to the inside of the filter housing 1, and the other end of the support column 4 being adapted to abut against the face 200 of the user. It will be appreciated that the support posts 4 are spaced between the filter sock 1 and the user's face 200, and the filter sock 1 can be spaced from the face 200 by the support posts 4 to form the air outlet 12. In the embodiment of the present invention, by providing the support columns 4, the exhaust port 12 can be formed while simplifying the complexity of the structure. Specifically, in one example of the present invention, the supporting column 4 may be a flexible member, for example, the supporting column 4 may be a skin-friendly silicone rubber, or a TPU (Thermoplastic polyurethane elastomer) material, or TPSiV (Thermoplastic silicone rubber), etc.

In some embodiments of the present invention, the supporting column 4 is plural, the plural supporting columns 4 are spaced apart from each other in the extending direction of the side wall 131 and the bottom wall 132 of the filter cover 1, and the supporting columns 4 are adapted to space both the side wall 131 and the bottom wall 132 of the filter cover 1 from the face 200 of the user. It is understood that a plurality of support portions provided at intervals in the extending direction of the side wall 131 and the bottom wall 132 of the filter cage 1 may form the exhaust port 12 at the side portion and the exhaust port 12 at the bottom portion between the filter cage 1 and the face portion 200. Moreover, the plurality of support columns 4 are arranged between the filter cover 1 and the face part 200 at intervals, so that the contact area between the filter cover 1 and the face part 200 can be reduced, and the discomfort of the whole face part 200 caused by the overlarge contact area is reduced.

In some embodiments of the invention, as shown in fig. 2 and 4, the support column 4 comprises: the filter cover comprises a first connecting part 41 and a second connecting part 42, wherein one end of the first connecting part 41 is connected with the inner side of the filter cover 1, one end of the second connecting part 42 is connected with the other end of the first connecting part 41, the other end of the second connecting part 42 is used for abutting against the face 200 of a user, and the cross-sectional area of the second connecting part 42 is larger than that of the first connecting part 41. Therefore, the area of the contact position of the supporting column 4 and the face portion 200 can be increased, so that the contact pressure between the supporting column 4 and the face portion 200 is reduced, and the discomfort of the contact position of the face portion 200 and the supporting column 4 is relieved.

In some embodiments of the present invention, the first connecting portion 41 and the second connecting portion 42 are integrally formed. From this, integrated into one piece's structure not only can guarantee first connecting portion 41 and second connecting portion 42, the stability of performance, and convenient shaping, it is simple to make, and unnecessary assembly part and connection process have been saved, the assembly efficiency of first connecting portion 41 and second connecting portion 42 has been improved greatly, guarantee the reliability that first connecting portion 41 and second connecting portion 42 are connected, moreover, integrated into one piece's structure's bulk strength and stability are higher, it is more convenient to assemble, the life-span is longer.

In some embodiments of the invention, as shown in fig. 7, the inside of the filter housing 1 is provided with a support strip 5, and the support strip 5 is arranged adjacent to the side wall 131 and/or the bottom wall 132 of the filter housing 1. In other words, the supporting strip 5 may be provided only at a position adjacent to the side wall 131 of the filter housing 1; or the support strip 5 may be provided only adjacent the bottom wall 132 of the filter housing 1; alternatively, the support strips 5 are arranged adjacent to the side wall 131 of the filter housing 1 and adjacent to the bottom wall 132 of the filter housing 1.

As shown in fig. 2 and 7, one side of the support strip 5 facing away from the filter housing 1 is used for abutting against the face 200 of the user, the support strip 5 is provided with an exhaust passage 51, one end of the exhaust passage 51 is communicated with the breathing cavity, and the other end of the exhaust passage 51 is communicated with the outside through the exhaust port 12. It will be appreciated that air within the breathing cavity may pass through the exhaust passage 51 and then be exhausted to the environment via the exhaust port 12. By arranging the air exhaust passage 51 on the support strip 5, the contact area of the support strip 5 and the face 200 can be reduced, and the comfort of the user can be improved. On the other hand, the exhaust passage 51 can communicate the exhaust port 12 with the breathing cavity, so that smooth discharge of air in the breathing cavity can be ensured.

Specifically, in one example of the present invention, a support band 5 is provided adjacent to the side wall 131 of the filter housing 1, the support band 5 being provided with the exhaust passage 51, the support band being capable of spacing the side wall 131 of the filter housing 1 from the user's face 200 to define the side exhaust port 12 communicating with the exhaust passage 51.

In one example of the invention, a support band 5 is provided adjacent the bottom wall 132 of the filter housing 1, the support band 5 having an exhaust passage 51 thereon, the support band being adapted to space the bottom wall 132 of the filter housing 1 away from the user's face 200 to define a bottom exhaust opening 12 in communication with the exhaust passage 51.

In some embodiments of the invention, as shown in fig. 5 and 6, the aspiration unit 2 comprises: fixing base 21, filter module 22 and fan module 23, fixing base 21 establishes in air inlet 11, and fixing base 21 limits installation cavity 211, and the relative both ends of installation cavity 211 communicate with breathing cavity and external world respectively, and filter module 22 establishes in installation cavity 211, and fan module 23 is located filter module 22's upper reaches or low reaches. It will be appreciated that ambient air may be delivered from the environment to the breathing cavity by the blower module 23. Specifically, in one example of the invention, the fan module 23 includes: driving motor and wind wheel, driving motor installs on fixing base 21, and the wind wheel is installed on driving motor's the axis of rotation. In addition, still be provided with filter module 22 in the installation cavity 211, utilize filter module 22 can realize the filtration and the purification to the air to guarantee to carry the cleanliness factor to the air in the breathing cavity.

Specifically, in an example of the present invention, as shown in fig. 5 and 6, the air suction unit 2 further includes a cover 24, the cover 24 is disposed at one end of the fixing base 21 adjacent to the outside, the cover 24 is provided with a plurality of vent holes communicated with the mounting cavity 211, and the plurality of vent holes are arranged in multiple rows and multiple columns.

In some embodiments of the invention, as shown in fig. 5 and 7, the guard 100 further comprises: and the electronic control unit 6 is arranged on the inner side of the filter cover 1, and the electronic control unit 6 is electrically connected with the air suction unit 2. It will be appreciated that the electronic control unit 6 may be used to power the suction unit 2, and that the electronic control unit 6 may also effect control of the operating state of the suction unit 2. Specifically, in one example of the present invention, the plurality of suction units 2 may be provided, the plurality of suction units 2 may be powered by the electronic control unit 6, and the number of activations in the plurality of suction units 2 and the rotation speed of each suction unit 2 may be controlled by the electronic control unit 6.

In one example of the present invention, the electronic control unit 6 is provided with a battery, and the battery may be a replaceable battery or a rechargeable battery. When the battery is a rechargeable battery, the protection tool 100 is further provided with a charging interface, and the battery can be charged by using an external power supply of the charging interface.

In one embodiment of the present invention, the air outlet end of the air suction unit 2 is provided with a first protective cover, and the first protective cover is provided with a plurality of air outlet holes. It can be understood that, by providing the first protective cover at the air outlet end of the air suction unit 2, the first protective cover can separate the face 200 of the user from other components or connecting circuits located in the air suction unit 2, so as to improve the safety of the user.

In one embodiment of the invention, the side of the electronic control unit 6 facing the face 200 is provided with a second protective cover provided with a plurality of air outlet holes. It will be appreciated that by providing a second protective mask on the side of the electronic control unit 6 facing the face 200, the second protective mask can separate the face 200 of the user from the electronic control unit 6, thereby improving the safety of use for the user.

In some embodiments of the present invention, as shown in fig. 2 and 8, the protective gear 100 further comprises: the fixing bands 7 are connected with the filtering cover 1, the number of the fixing bands 7 is two, and the two fixing bands 7 are spaced in the transverse direction or the longitudinal direction of the filtering cover 1. It can be understood that when the protective device 100 is used, a user needs to wear the protective device 100 on the face 200, and in order to fix the protective device 100 to the face 200, two fixing bands 7 are respectively arranged on two opposite sides of the protective device 100 in the transverse direction or the longitudinal direction. Here, the transverse direction may be understood as a left-right direction, and the longitudinal direction may be understood as an up-down direction.

Specifically, as shown in fig. 2 and 9, the fixing band 7 may be hung on the ear, neck or head. For example, two fixing bands 7 are respectively disposed on two opposite sides of the protective device 100 in the longitudinal direction, and a user can hang the two fixing bands 7 at two upper and lower positions of the head respectively to fix the protective device 100 and the face 200. Of course, one fixing strap 7 can be hung on the head, and the other fixing strap 7 can be hung on the neck. For another example, two fixing bands 7 are respectively provided on two sides of the protective device 100 opposite to each other in the transverse direction, the two fixing bands 7 are respectively hung on the left and right ears, and the protective device 100 and the face portion 200 are fixed by the two fixing bands 7. In particular, in one example of the invention, the fixing band 7 is an elastic band.

In some embodiments of the invention, the protective gear 100 further comprises: the color rendering indicating unit is arranged on the inner side of the filter cover 1 and used for detecting whether the humidity on the filter cover 1 is larger than a preset value or not. It is understood that the color-developing indication unit may change color. Specifically, when the humidity on the filter cover 1 detected by the color rendering indicating unit is greater than a preset value, the color rendering indicating unit changes color to remind a user of timely replacing the filter cover 1.

It should be noted that the filtering effect of the protective gear 100 is related to the service time of the protective gear 100. Specifically, the longer the protective gear 100 is, the more moisture the air exhaled by the user forms on the protective gear 100, and the longer the protective gear 100 is used, the poorer the filtering effect is because the moisture affects the filtering effect of the protective gear 100. However, it is clear how long each protective device 100 is used, and then the filtering is unqualified, but in the invention, by arranging the color-rendering indication unit, when the humidity on the filter cover 1 detected by the color-rendering indication unit is greater than a preset value, the color-rendering indication unit changes color, which indicates that the filtering effect of the filter cover 1 is unqualified, so that more intuitive reminding and replacement suggestion can be provided for a user.

In some embodiments of the present invention, the color-developing indicating unit is a strip, the color-developing indicating unit extends along the up-down direction of the filter housing 1, and the color-developing indicating unit is located on the central line of the left-right direction of the filter housing 1. It can be understood that, when the protective tool 100 is worn, the center of the left and right directions of the protective tool 100 is right opposite to the mouth and the nose of the user, the mouth and the nose are distributed along the up and down directions, the color display indicating unit is extended along the up and down directions and is positioned on the central line of the left and right directions of the filter cover 1, so that the color display indicating unit can be right opposite to the mouth and the nose, the humidity of the filter cover 1 relative to the mouth and the nose can be more accurately detected, and the accuracy and the reliability of the detection result can be further improved.

In some embodiments of the present invention, a convex strip is disposed on an inner side surface of the filter cover 1 facing the user's face 200, the convex strip is located on a center line of the filter cover 1 in the left-right direction, the convex strip extends along the up-down direction of the filter cover 1, a groove engaged with the convex strip is disposed on the color display unit, and the color display unit is clamped on the convex strip through the groove. The raised lines and the grooves have the advantage of simple structure, and the tight connection of the filter cover 1 and the color display indication unit can be realized through the matching of the raised lines and the grooves. In addition, the cost can be reduced while the connection strength of the filter cover 1 and the color display indicating unit is ensured. Moreover, the cooperation that utilizes sand grip and recess still has the advantage of easily dismouting, when the colour development indicating unit need be changed, only need with the colour development indicating unit from the sand grip pull get off can, only need during the installation with the colour development indicating unit pass through the recess card establish on the sand grip can, have convenient and swift advantage.

A control method of the protective tool 100 according to the embodiment of the present invention is described below with reference to fig. 10.

According to the control method of the protection tool 100 of the embodiment of the present invention, the protection tool 100 is the protection tool 100, and the control method includes: detecting air pressure within the breathing cavity; when the air pressure is greater than or equal to the preset pressure, controlling the air intake of the air suction unit 2 to be kept unchanged; when the air pressure is lower than the preset pressure, the air intake of the air suction unit 2 is controlled to increase.

It can be understood that the breathing cavity is not a fully closed cavity, when the external pressure is increased or the user is in a special scene, such as sports, the exhalation is rapid, the pressure in the breathing cavity is insufficient, and the risk of backflow is caused. According to the control method of the protective tool 100 provided by the embodiment of the invention, the air pressure in the breathing cavity can be detected, and when the detected air pressure value is lower than the preset pressure value, the air intake of the air suction unit 2 is controlled to be increased, so that the pressure in the breathing cavity is increased, the backward flowing risk is eliminated, meanwhile, a more comfortable cool feeling can be brought to a user, and the stuffiness feeling in a motion state is relieved. And when the detected air pressure value is greater than or equal to the preset pressure value, the current working state of the air suction unit 2 can be maintained unchanged, so that the air suction unit better meets the setting requirements of users.

Specifically, in an example of the present invention, a plurality of air suction units 2 may be provided, a plurality of corresponding air inlets 11 are also provided, the plurality of air inlets 11 and the plurality of air suction units 2 are correspondingly matched one to one, an electronic control unit 6 is provided on the protective device 100, the electronic control unit 6 is connected to each of the plurality of air suction units 2, and the electronic control unit 6 may be used to control the number of the plurality of air suction units 2 that are opened and the rotation speed of each air suction unit 2. Further, a pressure sensor 61 is provided inside the protective device 100, and the pressure sensor 61 can detect the air pressure in the breathing cavity.

Specifically, the control method comprises the following steps:

the method comprises the following steps: wearing the protective gear 100 and turning on the inhalation unit 2 of the protective gear 100;

step two: detecting the air pressure Pa in the breathing cavity by means of a pressure sensor 61;

step three: if the detected air pressure Pa is greater than or equal to the preset pressure Pb, controlling the opening number and the rotating speed of the air suction unit 2 to be kept unchanged;

step four: if the detected air pressure Pa is less than the preset pressure Pb, the number of starts of the suction unit 2 is increased and/or the rotation speed of the suction unit 2 is raised.

According to the control method of the protective tool 100 provided by the embodiment of the invention, the air suction unit 2 is arranged on the filter cover 1, and the air suction unit 2 can be used for conveying outside air into the breathing cavity, so that a positive pressure space is formed in the breathing cavity, when a user inhales air, the user can inhale the air more easily, and the resistance to inhalation can be reduced, at least part of the peripheral wall of the filter cover 1 is spaced from the face 200 of the user to form the exhaust port 12, and the air in the breathing cavity can be exhausted to the outside through the exhaust port 12, so that the air is prevented from being exhausted to the outside in a mode of penetrating through the filter cover 1, and the resistance to exhaust can be reduced, and the feeling of suffocation of the user during inhalation or exhalation can be avoided. Moreover, by providing the positive pressure space, the sealing property between the peripheral wall of the filter cover 1 and the face portion 200 does not need to be ensured, and the protective device 100 does not need to use a large tightening force when worn, and can relieve the uncomfortable feeling caused by the pressure.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Rather, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (11)

1. A protective device, characterized in that it is a mask or a face shield, said protective device comprising:

a filter mask for forming a breathing cavity with a user's face, the filter mask being provided with an air inlet in communication with the breathing cavity, at least part of a peripheral wall of the filter mask being spaced from the user's face to form an air outlet in communication with the breathing cavity;

the air suction unit is arranged in the air inlet and used for filtering outside air and then conveying the air to the breathing cavity.

2. The protective implement of claim 1, wherein at least one of the side wall and the bottom wall of the filter cage is for spacing from a face of a user to form a vent.

3. The protective device according to claim 2, wherein the inside of the filter housing is provided with a first sealing strip extending in a transverse direction of the filter housing, the first sealing strip being arranged adjacent to the top wall of the filter housing, the side of the first sealing strip facing away from the filter housing being adapted to abut against the face of a user.

4. The protective implement according to claim 3, characterized in that both ends of the first sealing strip are provided with a second sealing strip, the free ends of the second sealing strips extend obliquely towards the direction away from the top wall of the filter housing, and in the direction from the top wall to the bottom wall of the filter housing, the two second sealing strips extend obliquely towards the direction away from each other.

5. The protective implement of claim 2, further comprising: the support column is arranged close to the bottom wall or the side wall of the filter cover, one end of the support column is connected with the inner side of the filter cover, and the other end of the support column is used for abutting against the face of a user.

6. The protective implement of claim 5, wherein the support column is a plurality of support columns spaced apart in the direction of extension of the side wall and the bottom wall of the filter sock, the support columns being adapted to space both the side wall and the bottom wall of the filter sock away from the face of the user.

7. The protective gear of claim 5 or 6, wherein the support post comprises:

one end of the first connecting part is connected with the inner side of the filter cover;

the second connecting portion, the one end of second connecting portion with the other end of first connecting portion is connected, the other end of second connecting portion is used for supporting in user's face, wherein, the cross sectional area of second connecting portion is greater than the cross sectional area of first connecting portion.

8. The protective tool according to claim 2, wherein a support strip is arranged on the inner side of the filter cover, the support strip is arranged close to the side wall and/or the bottom wall of the filter cover, one side of the support strip, which is far away from the filter cover, is used for abutting against the face of a user, an exhaust passage is arranged on the support strip, one end of the exhaust passage is communicated with the breathing cavity, and the other end of the exhaust passage is communicated with the outside through the exhaust port.

9. The protective implement of claim 1, wherein the suction unit comprises:

the fixed seat is arranged in the air inlet, the fixed seat defines a mounting cavity, and two opposite ends of the mounting cavity are respectively communicated with the breathing cavity and the outside;

the filtering module is arranged in the mounting cavity;

and the fan module is arranged in the mounting cavity and is positioned at the upstream or the downstream of the filtering module.

10. The protective gear of claim 1, further comprising: the electric control unit is arranged on the inner side of the filter cover and electrically connected with the air suction unit, and/or the protective appliance further comprises: the fixing bands are connected with the filtering cover, the number of the fixing bands is two, and the two fixing bands are spaced in the transverse direction or the longitudinal direction of the filtering cover.

11. A method of controlling a protective gear, wherein the protective gear is according to any one of claims 1-10, the method comprising:

detecting air pressure within the breathing cavity;

when the air pressure is greater than or equal to the preset pressure, controlling the air intake of the air suction unit to be kept unchanged;

and when the air pressure is smaller than the preset pressure, controlling the air intake of the air suction unit to increase.

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