Filtering mechanism and novel face mask containing the filtering mechanism

Abstract

This invention relates to a filtering mechanism and a novel face mask incorporating the filtering mechanism, which is installed on a face mask to filter the gas inhaled by the wearer. The filtering device includes an upper positioning cover and a hollow lower positioning frame; a filter cloth is assembled between the lower positioning frame and the upper positioning cover, and a through hole is formed on the upper positioning cover. This invention has a simple structure and ingenious design. Through the filtering mechanism, the filtering area is increased and the filtering effect is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medical devices, and particularly relates to a filtering mechanism and a novel mask comprising the same. BACKGROUND

[0002] At present, masks are widely used and vigorously promoted as the simplest and most effective tool for preventing virus transmission. However, the types of masks are emerging endlessly, and most of the masks on the market at present are of a multi-layer barrier structure. Such masks have poor air permeability, and people feel stuffy after wearing the masks for a long time, thereby reducing the comfort.

[0003] In view of the above technical problems, improvement is needed. SUMMARY

[0004] The present application is to overcome the defects in the prior art, and to provide a filtering mechanism with simple structure, ingenious design, increased filtering area and improved filtering effect, and a novel mask comprising the same.

[0005] In order to achieve the above purposes, the technical scheme adopted by the present application is as follows: a filtering mechanism is installed on a mask for filtering the gas inhaled by a wearer, comprising a filtering device, the filtering device comprising an upper positioning cover and a lower positioning frame in a hollow structure; a filter cloth is assembled between the lower positioning frame and the upper positioning cover, and a through hole is formed in the upper positioning cover.

[0006] As a preferred scheme of the present application, the lower positioning frame is assembled on the inner side of the mask, and the upper positioning cover is located on the outer side of the mask.

[0007] As a preferred scheme of the present application, a stepped connecting portion is arranged circumferentially on the top of the lower positioning frame, and a corresponding mounting portion is arranged circumferentially on the bottom of the upper positioning cover. The connecting portion and the mounting portion are mutually clamped, so that the upper positioning cover is assembled on the lower positioning frame.

[0008] As a preferred scheme of the present application, the lower positioning frame is in a hollow structure, and a plurality of support strips are formed along the length direction of the lower positioning frame. Correspondingly, a plurality of positioning strips are formed along the length direction of the inner side of the upper positioning cover, and the support strips and the positioning strips are arranged alternately.

[0009] As a preferred scheme of the present application, the support strips and the positioning strips are in a wave-shaped structure.

[0010] As a preferred scheme of the present application, a connecting strip is mounted in the middle of the lower positioning frame, and the connecting strip passes through the plurality of support strips. The support strips, the connecting strip and the lower positioning frame are fixedly connected and integrally formed.

[0011] A mask, comprising: a mask body forming a mask chamber between the mask body and a face of a user when the mask is worn; and the mask further comprising a filtering mechanism for being mounted inside the mask body.

[0012] As a preferred scheme of the present application, a fan assembly is further included, which is attached to the mask body for ventilating the mask chamber.

[0013] As a preferred scheme of the present application, a limiting protrusion is formed on the through hole of the upper positioning cover, and a first assembly element is formed on the outer side of the limiting protrusion, and correspondingly, a second assembly element matching the first assembly element is formed on the inner side of the fan assembly, and the first assembly element and the second assembly element are matched and connected, so that the fan assembly and the filtering mechanism are detachably connected.

[0014] As a preferred scheme of the present application, the fan assembly has an axial inlet communicating with the inside of the mask chamber and a radial outlet outside the mask chamber.

[0015] The present application has the following beneficial effects:

[0016] 1. The present application has simple structure and ingenious design, and the filtering area is increased by the filtering mechanism, and the filtering effect is improved.

[0017] 2. The present application can set multiple different types of filter cloths for different working conditions by setting the lower positioning frame and the upper positioning cover, and the multiple filter cloths are connected in composite and stacked, and are suitable for various different working conditions.

[0018] 3. The lower positioning frame and the upper positioning cover are matched and connected, and are used for clamping the mask body between the lower positioning frame and the upper positioning cover, and are locked and sealed by the connecting part and the mounting part.

[0019] 4. The present application improves the use safety of the filter cloth by setting the supporting strips and the positioning strips for positioning the filter cloth, and further ensures the use safety.

[0020] 5. The supporting strips and the positioning strips of the present application are in a wave shape structure, and the supporting strips and the positioning strips are staggered, which increases the contact area of the supporting strips and the positioning strips with the filter cloth, and further increases the spacing between the adjacent supporting strips and the adjacent positioning strips, so that the positioning stability and safety of the filter cloth are ensured, the filtering effect is significantly improved, and the use comfort of the user is improved.

[0021] 6. A fan assembly is detachably installed on the filtering mechanism, which inhales air through the filter and / or provides assistance when exhaling; the fan assembly facilitates the smooth inhalation of fresh air from the outside and the timely discharge of the humid and polluted exhaust gas exhaled by the human body from the inside of the mask body to the outside, avoiding the discomfort caused by the excessive inhalation resistance of the air flow inlet hole due to the excessive density of the filter layer, the poor air circulation, and the retention of the polluted and humid air in the mask. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a bottom structural exploded view of an embodiment of the present application;

[0023] Figure 2 is a side view of an embodiment of the present application;

[0024] Figure 3 is a structural schematic view of an embodiment of the present application;

[0025] Figure 4 is a front view of an embodiment of the present application;

[0026] Figure 5 is a filtering mechanism use state view of an embodiment of the present application;

[0027] Figure 6 is a filtering mechanism structural exploded view (1) of an embodiment of the present application;

[0028] Figure 7 is a filtering mechanism structural exploded view (2) of an embodiment of the present application;

[0029] In the drawings, reference numerals: filtering device 1, filtering mechanism 2, upper positioning cover 3, lower positioning frame 4, filtering cloth 5, through hole 12, first assembly element 20, second assembly element 21, positioning strip 30, mounting portion 31, limiting protrusion 32, supporting strip 40, connecting strip 41, connecting portion 42, mask 200, mask body 201, mask cavity 202, face 203, fan assembly 300, radial outlet 301. DETAILED DESCRIPTION

[0030] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0031] In the description of the present application, it should be noted that unless otherwise expressly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] Embodiment:

[0033] As shown in 1-7, a filtering mechanism is installed on the mask 200 for filtering the gas inhaled by the wearer, comprising a filtering device 1, the filtering device 1 comprising an upper positioning cover 3 and a lower positioning frame 4 in a hollow structure; a filter cloth 5 is assembled between the lower positioning frame 4 and the upper positioning cover 3, and a through hole 12 is formed on the upper positioning cover 3; a filtering containing cavity is formed between the upper positioning cover 3, the filter cloth 5 and the lower positioning frame 4, which increases the filtering area and improves the filtering effect; wherein the through hole 12 is close to the position of the mouth and nose; the mask 200 is connected by stacking multiple layers of filter cloth, so it is easy to deform, so that the outer edge can match the shape of the wearer's face. The mask 200 is provided with ear straps; during use, a through hole is formed on the mask body 201, and the two sides of the through hole are connected and fastened by the upper positioning cover 3 and the lower positioning frame 4, so that the lower positioning frame 4 is assembled on the inside of the mask 200, and the upper positioning cover 3 is located on the outside of the mask 200; the present application sets the lower positioning frame and the upper positioning cover, which can set multiple different types of filter cloths for different working conditions, and the multiple filter cloths are connected in composite and stacked, which is suitable for various different working conditions.

[0034] The top of the lower positioning frame 4 is circumferentially provided with a stepped connecting portion 42, and the bottom of the upper positioning cover 3 is circumferentially provided with a mounting portion 31 corresponding to the connecting portion 42, the connecting portion 42 and the mounting portion 31 are mutually clamped, so that the upper positioning cover 3 is assembled on the lower positioning frame 4; the lower positioning frame and the upper positioning cover of the present application are mutually clamped for clamping the mask body between the lower positioning frame and the upper positioning cover, and are locked and sealed by the connecting portion and the mounting portion.

[0035] The lower positioning frame 4 is in a hollow structure, and a plurality of supporting strips 40 are formed along the length direction thereof, and correspondingly, a plurality of positioning strips 30 are formed on the inside of the upper positioning cover 3 along the length direction thereof, the present application sets the supporting strips and the positioning strips for positioning the filter cloth, which improves the use safety of the filter cloth, and further ensures the use safety.

[0036] The support strips 40 and the positioning strips 30 are in a wavy structure, and the support strips 40 are staggered with the positioning strips 30, so that the contact area of the support strips and the positioning strips with the filter cloth is increased, and then the spacing between adjacent support strips and adjacent positioning strips is increased, the positioning stability and safety of the filter cloth are ensured, the filtering effect is significantly improved, and the use comfort of the user is improved.

[0037] The middle part of the lower positioning frame 4 is provided with a connecting strip 41 penetrating through the plurality of support strips 40, and the support strips 40, the connecting strip 41 and the lower positioning frame 4 are fixedly connected and integrally formed, so that the structural strength and overall firmness of the entire lower positioning frame 4 are improved, and the use safety is further ensured.

[0038] In use, the user holds the upper positioning cover 3 and the lower positioning frame 4 to screw the fan assembly 300 to the limiting protrusion 32, and the design of the upper positioning cover 3 and the lower positioning frame 4 increases the contact area with the hand, improves the assembly efficiency and firmness, and then ensures the use safety.

[0039] A mask includes a mask body 201 forming a mask chamber 202 between the mask body 201 and a user's face 203 when the mask 200 is worn, and the mask 200 further includes a filtering mechanism 2 installed inside the mask body 201, and the filtering effect is significant, and the wearing comfort is improved.

[0040] A mask further includes a fan assembly 300 attached to the mask body 201 for ventilating the mask chamber 202, and the fan assembly is an exhaust fan. In the simplest design, it operates continuously to provide a continuous air supply to the face (using air drawn in through the mask filter). This provides temperature and humidity control. However, it can operate in synchronization with the wearer's breathing (with suitable breath sensing), and it can be controlled bidirectionally. Alternatively, there can be separate intake and exhaust fans, for example one on each side.

[0041] The limiting protrusion 32 is formed on the through hole 12 of the upper positioning cover 3, and the outer side of the limiting protrusion 32 is formed with a first assembly element 20, and correspondingly, the inner side of the fan assembly 300 is formed with a second assembly element 21 matched with the first assembly element 20, and the first assembly element 20 and the second assembly element 21 are matched and connected, so that the fan assembly 300 and the filtering mechanism 2 are detachably connected.

[0042] The fan assembly 300 has an axial inlet in communication with the interior of the mask chamber 202 and a radial outlet 301 outside the mask chamber 202, which can be adapted to be at least partially rearward or at least partially downward when the mask is worn by a user. This means that the outlet flow can be directed towards the user's face, neck or shoulders. By radial outlet 301 is meant that the outlet flow is directed outward in the plane of rotation of the fan, and not perpendicular to the plane of rotation. This does not mean that the fan body has a circular shape.

[0043] The mask body 201 is thus the outermost surface of the overall structure, and the flow outlet from the fan is delivered outside this outermost surface. The degree of exteriority of the mask chamber 202 is defined by the filter layer.

[0044] In one example, the limiting protrusion 32 on the upper positioning cover 3 can have a shape that fits the fan assembly 300 and snaps into the interface between the fan assembly and the limiting protrusion 32. It can thus be installed during cold periods and removed during hot periods. In this way, the flow can be switched between a flow directed towards the user's face or neck for cooling purposes and a flow directed away from the user's face or neck to avoid overcooling.

[0045] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application; thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0046] Although the terms filter device 1, filter mechanism 2, upper positioning cover 3, lower positioning frame 4, filter cloth 5, through hole 12, first assembly element 20, second assembly element 21, positioning strip 30, mounting portion 31, limiting protrusion 32, support strip 40, connecting strip 41, connecting portion 42, mask 200, mask body 201, mask chamber 202, face portion 203, fan assembly 300, radial outlet 301 and the like are used more frequently herein, the possibility of using other terms is not excluded. The use of these terms is merely intended to facilitate the description and explanation of the essence of the present application; any kind of additional limitation resulting from their interpretation is contrary to the spirit of the present application.

Claims

1. A filtering mechanism mounted on a mask (200) for filtering the air inhaled by a wearer, characterized in that: The utility model provides filtering device (1) including, filtering device (1) including upper locating cover (3) and the lower locating frame (4) of hollow structure, lower locating frame (4) and upper locating cover (3) between assembly have filter cloth (5), the upper locating cover (3) on form the through -hole (12) of 12, the upper locating cover (3), filter cloth (5) and lower locating frame (4) between form a filtering containing cavity, the lower locating frame (4) is of hollow structure, and along its length direction forms a plurality of support strip (40), correspondingly, the inside of upper locating cover (3) along its length direction forms a plurality of locating strip (30), wherein, support strip (40) and locating strip (30) staggered arrangement, support strip (40) and locating strip (30) are of wave shape structure.

2. A filtering mechanism according to claim 1, wherein: The lower locating frame (4) is assembled on the inside of the mask (200), and the upper locating cover (3) is located outside the mask (200).

3. The filtering mechanism of claim 1, wherein: The lower locating frame (4) is circumferentially arranged with a stepped connecting portion (42) on the top, and correspondingly, the bottom of the upper locating cover (3) is circumferentially arranged with a mounting portion (31), the connecting portion (42) and the mounting portion (31) are mutually clamped, so that the upper locating cover (3) is assembled on the lower locating frame (4).

4. The filtering mechanism of claim 1, wherein: The lower locating frame (4) is installed with a connecting strip (41) in the middle, the connecting strip (41) passes through a plurality of support strips (40); and the support strip (40), the connecting strip (41) and the lower locating frame (4) are fixedly connected and integrally formed.

5. A face mask comprising: The mask body (201) forms a mask chamber (202) between the mask body (201) and the face (203) of the user when the mask (200) is worn; and the mask (200) further comprises a filtering mechanism (2) for being installed inside the mask body (201), and the filtering mechanism (2) is the filtering mechanism according to any one of claims 1 to 4.

6. A face mask according to claim 5, wherein: Further comprising a fan assembly (300) attached to the mask body (201) for ventilating the mask chamber (202).

7. A face mask according to claim 6, wherein: The through hole (12) of the upper locating cover (3) is formed with a limiting protrusion (32), the outside of the limiting protrusion (32) is formed with a first assembly element (20), correspondingly, the inside of the fan assembly (300) is formed with a second assembly element (21) matched with the first assembly element (20), the first assembly element (20) and the second assembly element (21) are matched and clamped, so that the fan assembly (300) and the filtering mechanism (2) are detachably connected.

8. A face mask according to claim 6, wherein: The fan assembly (300) has an axial inlet communicating with the inside of the mask chamber (202) and a radial outlet (301) outside the mask chamber (202).

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