Protective face shield having function of quickly testing wearing tightness

Abstract

Disclosed in the present invention is a protective face shield having the function of quickly testing the wearing tightness, the protective face shield comprising: a face shield body, in which corresponding air suction holes and air output holes are provided; a group of filtering mechanisms, which are detachably mounted on the outer sides of the corresponding air suction holes of the face shield body; a one-way valve plate, which is movably mounted to the face shield body on the outer side of the air output holes, the one-way valve plate being opened outwards during air blowing, and the one-way valve plate being closed during air suction; a sealing rubber member, which is mounted at the edge of the side of the face shield body close to the human face, the edge of the sealing rubber member being folded inwards; and a pressing detection mechanism, which is mounted at the front end of the face shield body where the air output holes are provided, and is configured to tightly press the one-way valve plate. In the present invention, on the basis of the self-resetting characteristics of a flexible pressing member and combined with other components, it is possible to implement the pressing and resetting actions of the one-way valve plate of the protective face shield, improve the convenience and ease of pressing, improve the structural assembly convenience and compactness, and ensure the accuracy of positive pressure detection.

Description

Protective mask with function of quickly testing wearing tightness TECHNICAL FIELD

[0001] The present application relates to a protective mask, in particular to a protective mask with function of quickly testing wearing tightness. BACKGROUND

[0002] The protective mask is a device for protecting the face and neck from flying metal fragments, harmful gases, liquid splashes, metal and high-temperature solvent flying particles. Mainly including welding mask, impact-resistant mask, radiation-resistant mask, smoke and toxic gas-resistant mask and heat-resistant mask, etc. The protective mask mainly plays a blocking or isolating effect, so the air tightness or tightness performance is very important, especially for the smoke and toxic gas-resistant mask.

[0003] The existing smoke and toxic gas-resistant mask sets a corresponding pressing mechanism to detect the air tightness of the protective mask in real time. The pressing mechanism presses the one-way valve piece or blocks the air outlet hole to communicate with the outside, and then slowly exhales. If the mask body is slightly bulged and there is no obvious leakage between the face and the mask body, it indicates that the air tightness is good, so as to detect the use air tightness of the protective mask.

[0004] The existing positive pressure detection device of the filtering type respiratory protection mask generally includes a corresponding positive pressure button. The positive pressure button is pressed to press the closed one-way valve piece or block the air outlet hole to communicate with the outside, and then cooperate with the air tightness detection. The positive pressure button is mainly realized by compression and reset of an elastic member such as a spring. The spring is used in the positive pressure button, and the rigidity of the spring has certain requirements to support the positive pressure button. However, this easily leads to large pressing force, and it cannot be ensured whether the one-way valve piece is pressed after pressing, thereby reducing the accuracy of the air tightness detection. In addition, a corresponding structure needs to be set on the protective mask for installing the corresponding spring, so that the overall structure of the protective mask is relatively complex.

[0005] Therefore, on the basis of ensuring that the protective mask has the function of quickly testing wearing tightness, it is the research purpose of the present application to design a protective mask which can ensure the accuracy of air tightness detection and simplify the overall structural complexity.

[0006] SUMMARY

[0007] In view of the technical problems existing in the prior art, the present application provides a protective mask with function of quickly testing wearing tightness, which can effectively solve the technical problems existing in the prior art.

[0008] The technical scheme of the present application is as follows:

[0009] A protective mask with function of quickly testing wearing tightness, comprising:

[0010] a mask body, both sides of which are provided with corresponding air inlet holes, and a corresponding air outlet hole is arranged at the middle of the lower side of the mask body;

[0011] a set of filtering mechanisms, which are respectively detachably installed outside the corresponding air inlet holes of the mask body;

[0012] a one-way valve, which is movably installed outside the air outlet hole of the mask body, and which can be opened outwardly when blowing and closed when exhaling;

[0013] a sealing rubber body, which is installed at the edge of the side of the mask body close to the face, and the edge of which is inwardly folded;

[0014] a pressing detection mechanism, which is installed at the front end of the mask body provided with the air inlet hole and is used to press the one-way valve, and the pressing detection mechanism comprises:

[0015] a mounting valve seat, which is fixedly installed on the mask body, and a corresponding embedded circular hole is arranged at the position corresponding to the one-way valve;

[0016] a limiting fixing member, which comprises a pressing part arranged in a cylindrical shape, an annular limiting plate is outwardly arranged at the inner end of the pressing part, and a corresponding hinged shaft member is integrally formed and upwardly connected at the upper side of the annular limiting plate; the pressing part is fixedly inserted into the embedded circular hole of the mounting valve seat, the annular limiting plate is arranged inside the embedded circular hole, and the pressing part and the inner wall of the embedded circular hole and the annular limiting plate and the inner end of the embedded circular hole are respectively arranged in a spaced manner;

[0017] a flexible pressing member, which comprises a pressing part and a cylindrical mounting part folded at the edge of the pressing part, the cylindrical mounting part is clamped between the pressing part and the embedded circular hole, and a pressing convex edge for clamping strengthening is arranged at the joint of the cylindrical mounting part and the pressing part; the inner end of the cylindrical mounting part is outwardly folded in an inverted L shape to form a corresponding clamping groove, which is fixedly clamped between the annular limiting plate and the embedded circular hole;

[0018] a pressing swing member, which is hingedly installed on the hinged shaft member of the limiting fixing member, a corresponding driving execution member is installed on the pressing part, the inner end of the driving execution member is arranged in an inclined surface shape and inwardly provided with a pulling reset part extending to the inner side of the pressing swing member.

[0019] a corresponding clamping platform is inwardly recessed at the inner side of the embedded circular hole, and a clamping plane matched with the clamping platform is arranged on the outer side of the cylindrical mounting part.

[0020] The pressing part is provided in an outward convex arc surface shape, and a corresponding buffer arc surface groove is provided in the inner recess of the joint with the cylindrical mounting part.

[0021] The limiting fixing part is provided with a plurality of fixed mounting parts on the periphery of the annular limiting plate, the inner side of the mounting valve seat is provided with a plurality of plug-in parts matched with the fixed mounting parts, and the limiting fixing part is detachably mounted on the mounting valve seat through plug-in.

[0022] The flexible pressing part is integrally formed with a clamping part for clamping the driving execution part in the middle of the inner side of the pressing part, and the driving execution part is detachably mounted on the inner side of the flexible pressing part through clamping.

[0023] The pressing swing part comprises a tight pressing part matched with the one-way valve sheet, a hooking part integrally formed on both sides of the top end of the tight pressing part, and a boss-shaped reset part provided in the middle of the tight pressing part and matched with the pressing part.

[0024] The pulling reset part comprises a pulling rod penetrating through the pressing swing part, and a reset block integrally formed on the end part of the pulling rod; the middle part of the boss-shaped reset part is longitudinally provided with an elongated hole with a diameter larger than that of the pulling rod and smaller than that of the reset block, the lower end part of the elongated hole is provided with a mounting hole in communication with the elongated hole and with a diameter larger than that of the reset block, and the pulling rod penetrates through the elongated hole and is movably mounted on the boss-shaped reset part of the pressing swing part.

[0025] The mounting valve seat is integrally formed with a cylindrical fixing part for mounting the flexible pressing part on the inner side of the embedded circular hole, and the flexible pressing part is detachably mounted on the mounting valve seat by clamping groove sleeving on the cylindrical fixing part and cooperating with the limiting fixing part.

[0026] The flexible pressing part is integrally formed with a reinforcing rib ring on the inner side of the pressing part, and the reinforcing rib ring is provided on the outer edge of the clamping part and is spaced apart from the clamping part.

[0027] The sealing rubber body is integrally formed with a plurality of connecting parts for connecting the wearing rope at intervals at the joint of the fold; and the mask body is detachably clamped with a corresponding valve sheet mounting seat for mounting and fixing the one-way valve sheet at the position of the air outlet hole.

[0028] The advantages of the present application are:

[0029] 1) The present application is a protective mask with rapid test wearing adhesion, which uses a pressing detection mechanism to realize the tight pressing of the one-way valve piece at the exhalation port, so as to facilitate the air tightness detection of the protective mask. The pressing and resetting of the pressing detection mechanism are realized by replacing the existing button with a flexible pressing piece, which not only effectively solves the problem of difficult pressing caused by the stiffness requirement of the elastic piece, improves the convenience and ease of pressing, but also improves the structural assembly convenience and compactness through the limiting and complementation of each component, so that the pressing action can be completed with relatively light pressing force, ensuring that the pressing device stably and tightly presses the one-way valve piece and ensuring the accuracy of the positive pressure detection.

[0030] 2) The present application directly drives the flexible pressing piece to tightly press the one-way valve piece, which effectively solves the problems of difficult pressing and high structural complexity. However, the installation position of the flexible pressing piece may deviate after pressing, which may cause the subsequent pressing and resetting of the flexible pressing piece to fail to meet the design requirements. Therefore, the present application further provides a pressing convex edge at the junction of the cylindrical mounting portion and the pressing portion of the flexible pressing piece, which limits the installation of the flexible pressing piece and adjusts the installation fixed point of the flexible pressing piece to the position of the pressing convex edge, separates the flexible pressing piece into a part for installation and fixation and a part for pressing drive and resetting action, and ensures that the installation position of the flexible pressing piece will not deviate when pressing, thereby ensuring the stability of the subsequent pressing and resetting action of the flexible pressing piece.

[0031] Through the special-shaped flexible pressing piece that is different from the traditional standard piece, the flexible pressing piece only needs to apply a relatively light external force to realize the pressing of the one-way valve piece, which is beneficial for users to distinguish and ensure that the one-way valve piece is tightly pressed in place, ensuring the accuracy of the positive pressure detection, and the installation stability of the flexible pressing piece is not affected by the pressing by using the pressing convex edge to press and install, ensuring that the installation position is not deformed by pulling, and the installation stability can be promoted to ensure the use of the pressing part, so as to ensure that the one-way valve piece is tightly pressed in place, which cannot be realized by a simple silicone button.

[0032] 3) The limiting fixing piece of the present application comprises a press-fit part arranged in a cylindrical shape, the inner end of the press-fit part is integrally formed with an annular limiting plate arranged outwardly, the upper side of the annular limiting plate is integrally formed with a corresponding hinged shaft member connected upwardly; the press-fit part is fixedly inserted into the embedded circular hole of the mounting valve seat, the annular limiting plate is arranged on the inner side of the embedded circular hole, and the press-fit part and the inner wall of the embedded circular hole, and the annular limiting plate and the inner end of the embedded circular hole are respectively arranged in a spaced manner. The flexible pressing member is clamped between the press-fit part and the embedded circular hole through the cylindrical mounting part thereof, and the press-fit part and the embedded circular hole are tightly arranged between the press-fit part and the embedded circular hole, and the inner end of the cylindrical mounting part is arranged in a reverse L-shaped outwardly folded clamping groove fixedly clamped between the annular limiting plate and the embedded circular hole. Through the novel arrangement of the structure of the limiting fixing piece, the mounting valve seat can be effectively limited and fixed for the flexible pressing member, and the hinged installation and limiting reset of the press-fit swing member can be realized, ensuring quick and convenient installation of each component and realizing compactness of the structure; and the press-fit part can be matched with the boss-shaped reset part of the press-fit swing member, the boss-shaped reset part is embedded in the hollow position of the press-fit part when the press-fit swing member is reset in place, limiting the reset of the press-fit swing member, ensuring that each component is reset in place, avoiding the flexible pressing member from being pulled due to incomplete reset and affecting its service life, thereby protecting the flexible pressing member.

[0033] 4) The press-fit swing member of the present application is hingedly installed on the hinged shaft member of the limiting fixing piece, a corresponding driving execution member is installed on the pressing part, the inner end of the driving execution member is arranged in a beveled shape and inwardly provided with a pulling reset part extending to the inner side of the press-fit swing member. The beveled part of the driving execution member can ensure that the press-fit swing member is tightly pressed against the check valve plate after the driving execution member pushes the press-fit swing member to displace until the beveled part of the driving execution member is attached to the press-fit swing member, and the inner end of the driving execution member arranged in a beveled shape can form a larger space for giving way, which can provide a larger turning space for the check valve plate, so that the unfolding angle of the check valve plate meets the design requirements and has a larger opening angle for breathing. Furthermore, the pulling reset part extends through the press-fit swing member and is provided with a corresponding limiting block at the end thereof, and when the flexible pressing member drives the driving execution member to reset, the pulling reset part of the driving execution member can pull the press-fit swing member to reset.

[0034] 5) A circle of reinforcing ribs is integrally formed on the inner side of the flexible pressing member, which is arranged in a circle and spaced from the clamping part, which not only ensures the pressing reset function of the flexible pressing member, but also strengthens the strength of the flexible pressing member and enhances its service life. BRIEF DESCRIPTION OF DRAWINGS

[0035] Fig. 1 is a structural schematic view of the present application.

[0036] Fig. 2 is an installation sectional view of the face mask body and the check valve plate in the present application.

[0037] Fig. 3 is a sectional view of the pressing detection mechanism and the installation position of the one-way valve sheet in the present application.

[0038] Fig. 4 is an exploded structural schematic view of the pressing detection mechanism in the present application.

[0039] Fig. 5 is a sectional structural schematic view of the limiting fixing member and the installation valve seat in the present application.

[0040] Fig. 6 is a sectional structural schematic view of the pressing detection mechanism (when the installation valve seat is removed) in the present application.

[0041] Fig. 7 is a structural schematic view of the pressing swing member in the present application.

[0042] Fig. 8 is a structural schematic view of the installation valve seat in the present application.

[0043] Fig. 9 is a sectional view of the flexible pressing member in the present application.

[0044] In the drawings: mask body 1, air inlet hole 101, air outlet hole 102, one-way valve sheet 2, sealing rubber body 3, connecting member 301, pressing detection mechanism 4, installation valve seat 41, embedded round hole 411, plug-in member 412, cylindrical fixing member 413, clamping platform 414, limiting fixing member 42, pressing part 421, annular limiting plate 422, hinged shaft member 423, fixed installation part 424, flexible pressing member 43, pressing part 431, cylindrical installation part 432, clamping plane 4321, pressing convex edge 433, clamping groove 434, clamping part 435, reinforcing rib ring 436, buffer cambered groove 437, pressing swing member 44, pressing part 441, hooking part 442, boss-shaped reset part 443, elongated hole 4431, installation hole 4432, driving execution member 45, pulling reset part 451, pulling rod 4511, reset block 4512, valve sheet installation seat 5. DETAILED DESCRIPTION

[0045] For the convenience of those skilled in the art to understand, the structure of the present application will be further described in detail in combination with the drawings:

[0046] Referring to Figs. 1-9, a protective mask with a function of quickly testing wearing tightness, comprising:

[0047] A mask body 1, both sides of the mask body 1 are provided with corresponding air inlet holes 101, and a corresponding air outlet hole 102 is provided at the lower middle part thereof;

[0048] A set of filtering mechanisms, respectively and detachably installed outside the corresponding air inlet holes 101 of the mask body 1;

[0049] One-way valve piece 2, movably mounted on the mask body 1 outside the air outlet hole 102, which can be opened outward during blowing and closed during exhaling;

[0050] Sealing rubber body 3, mounted on the edge of the mask body 1 near the side of the human face, the edge of the sealing rubber body 3 is inwardly folded;

[0051] Pressing detection mechanism 4, mounted on the front end of the mask body 1 provided with the air inlet hole 101 and used to press the one-way valve piece 2, the pressing detection mechanism 4 comprises:

[0052] Mounting valve seat 41, fixedly mounted on the mask body 1, the mounting valve seat 41 is provided with a corresponding embedded circular hole 411 at a position corresponding to the one-way valve piece 2;

[0053] Limiting fixing part 42, comprising a pressing part 421 arranged in a cylindrical shape, the inner end of the pressing part 421 is integrally formed with an annular limiting plate 422 arranged outwardly, the upper side of the annular limiting plate 422 is integrally formed with a corresponding hinge shaft part 423 connected upwardly; the pressing part 421 is fixedly inserted into the embedded circular hole 411 of the mounting valve seat 41, the annular limiting plate 422 is arranged on the inner side of the embedded circular hole 411, and the pressing part 421 and the inner wall of the embedded circular hole 411, and the annular limiting plate 422 and the inner end of the embedded circular hole 411 are respectively arranged in a spaced manner;

[0054] Flexible pressing part 43, comprising a pressing part 431 and a cylindrical mounting part 432 arranged by folding the edge of the pressing part 431, the cylindrical mounting part 432 is clamped between the pressing part 421 and the embedded circular hole 411, and the cylindrical mounting part 432 is provided with a pressing convex edge 433 for clamping and strengthening at a position corresponding to the connection of the pressing part 431; the inner end of the cylindrical mounting part 432 is outwardly folded with a corresponding clamping groove 434 in an inverted L shape, the clamping groove 434 is fixedly clamped between the annular limiting plate 422 and the embedded circular hole 411;

[0055] Pressing swinging part 44, hingedly mounted on the hinge shaft part 423 of the limiting fixing part 42, a corresponding driving execution part 45 is mounted on the pressing part 431, the inner end of the driving execution part 45 is arranged in an inclined surface shape and inwardly provided with a pulling reset part 451 extending through to the inner side of the pressing swinging part 44.

[0056] The application is a protective mask with fast test wearing adhesion, which realizes the tight pressing of the one-way valve piece 2 at the exhalation port by the pressing detection mechanism 4, so as to facilitate the air tightness detection of the protective mask. The pressing and resetting work of the pressing detection mechanism 4 is completed by replacing the existing button with a flexible pressing piece 43, which not only effectively solves the problem of difficult pressing caused by the stiffness requirement of the elastic piece, improves the convenience and ease of pressing, but also improves the structural assembly convenience and compactness through the limiting and complementation of various parts, so that the pressing action can be completed with relatively light pressing force, ensuring the stable and tight pressing of the one-way valve piece 2 by the pressing device and the accuracy of the positive pressure detection.

[0057] The flexible pressing piece 43 directly drives the pressing and swinging piece 44 to swing and tightly press the one-way valve piece 2, which effectively solves the problems of difficult pressing and high structural complexity. However, the installation position of the flexible pressing piece 43 may deviate after pressing, which may cause the subsequent pressing and resetting of the flexible pressing piece 43 to fail to meet the design requirements. Therefore, a pressing convex edge 433 for clamping and strengthening is arranged at the junction of the cylindrical installation part 432 and the pressing part 431 of the flexible pressing piece 43, the flexible pressing piece 43 is limited and installed through the intervention of the pressing convex edge 433, the installation fixed point of the flexible pressing piece 43 is adjusted to the position of the pressing convex edge 433, the flexible pressing piece 43 is divided into a part for installation and fixation and a part for pressing driving and resetting action, and the two parts do not interfere with each other, thereby ensuring that the installation position of the flexible pressing piece 43 does not deviate when pressing, and the stability of the subsequent pressing and resetting action of the flexible pressing piece 43 is ensured.

[0058] The flexible pressing piece 43 is a special-shaped part different from the traditional standard part, which can realize the tight pressing of the one-way valve piece 2 by driving other parts with relatively light external force, the light driving force can help the user to distinguish and ensure that the one-way valve piece 2 is pressed into place, ensure the accuracy of the positive pressure detection, and the installation stability of the flexible pressing piece 43 is not affected by the pressing by extruding and installing the pressing convex edge 433, which ensures that the installation position is not deformed by pulling, and the installation stability can be promoted to ensure the use of the pressing part 431, so that the one-way valve piece 2 can be pressed into place, which cannot be realized by the pure silica gel button.

[0059] The inner side of the embedded round hole 411 is recessed inwardly to form a corresponding clamping platform 414, and the outer side of the cylindrical installation part 432 is provided with a clamping plane 4321 matched with the clamping platform 414, and the clamping groove 434 is matched to further stabilize, limit and fix the flexible pressing piece 43.

[0060] The pressing part 431 is provided in a convex arc surface shape, and a corresponding buffer arc groove 437 is concavely arranged at the joint of the pressing part 431 and the cylindrical mounting part 432, so that the pressing part 431 and the cylindrical mounting part 432 form a corresponding connection buffer to improve the practical effect of the flexible pressing piece 43.

[0061] The limiting fixing piece 42 is provided with a plurality of fixed mounting parts 424 on the periphery of the annular limiting plate 422, and the inner side of the mounting valve seat 41 is provided with a plurality of plug-in parts 412 matched with the fixed mounting parts 424, so that the limiting fixing piece 42 is detachably mounted on the mounting valve seat 41 by plug-in mode.

[0062] The flexible pressing piece 43 is integrally formed with a clamping part 435 for clamping the driving execution piece 45 at the middle of the inner side of the pressing part 431, and the driving execution piece 45 is detachably mounted on the inner side of the flexible pressing piece 43 by clamping mode.

[0063] The pressing and swinging piece 44 comprises a tight pressing part 441 matched with the one-way valve plate 2, a hooking part 442 integrally formed on both sides of the top end of the tight pressing part 441, and a boss-shaped reset part 443 arranged at the middle of the tight pressing part 441 and matched with the pressing part 421.

[0064] The limiting fixing piece 42 of the application comprises a press-fit part 421 arranged in a cylindrical shape, the inner end of the press-fit part 421 is integrally formed with an annular limiting plate 422 arranged outward, the upper side of the annular limiting plate 422 is integrally formed with a corresponding hinged shaft piece 423 connected upward; the press-fit part 421 is fixedly inserted into the embedded circular hole 411 of the mounting valve seat 41, the annular limiting plate 422 is arranged on the inner side of the embedded circular hole 411, and the press-fit part 421 and the inner wall of the embedded circular hole 411 and the annular limiting plate 422 and the inner end of the embedded circular hole 411 are respectively arranged in a spaced manner, the flexible pressing piece 43 is clamped between the press-fit part 421 and the embedded circular hole 411 through the cylindrical mounting part 432 thereof, and the pressing convex edge 433 is tightly arranged between the press-fit part 421 and the embedded circular hole 411, the inner end of the cylindrical mounting part 432 is arranged in a card slot 434 folded outward in a reverse L shape and fixedly clamped between the annular limiting plate 422 and the embedded circular hole 411. Through the novel arrangement of the structure of the limiting fixing piece 42, the flexible pressing piece 43 can be effectively limited and installed and fixed in cooperation with the mounting valve seat 41, the hinged installation and limiting reset of the press-fit swinging piece 44 can be realized, the quick and convenient installation of each component is ensured, the compactness of the structure is realized, the boss-shaped reset part 443 of the press-fit swinging piece 44 is embedded in the hollow position of the press-fit part 421 when the press-fit swinging piece 44 is reset in place, the reset of the press-fit swinging piece 44 is limited, each component is ensured to be reset in place, the service life of the flexible pressing piece 43 is affected due to the reset not being in place, and the protection effect of the flexible pressing piece 43 is realized.

[0065] The pulling reset part 451 comprises a pulling rod 4511 penetrating through the press-fit swinging piece 44 and a reset block 4512 integrally formed at the end of the pulling rod 4511; the middle part of the boss-shaped reset part 443 is longitudinally provided with an elongated hole 4431 with a hole diameter larger than the diameter of the pulling rod 4511 and smaller than the diameter of the reset block 4512, the lower end of the elongated hole 4431 is provided with a mounting hole 4432 in communication therewith and with a hole diameter larger than the diameter of the reset block 4512, and the pulling rod 4511 penetrates through the elongated hole 4431 and is movably mounted on the boss-shaped reset part 443 of the press-fit swinging piece 44. Not only is the quick and convenient installation of the press-fit swinging piece 44 and the driving execution piece 45 facilitated, but also the pushing and pulling reset action of the press-fit swinging piece 44 is realized.

[0066] The compression swing piece 44 of the present application is hingedly mounted on the hinge shaft 423 of the limiting fixture 42, a corresponding driving execution piece 45 is mounted on the pressing part 431, the inner end of the driving execution piece 45 is provided in a bevel shape and is provided with a pulling reset part 451 extending through the inside of the compression swing piece 44. The driving execution piece 45 pushes the compression swing piece 44 to displace until the bevel part of the driving execution piece 44 is attached to the compression swing piece 45, which can ensure that the compression swing piece 44 tightly compresses the one-way valve piece 2, and the inner end of the driving execution piece 45 provided in a bevel shape can form a larger space for giving way, which can provide a larger turning space for the one-way valve piece 2, so that the unfolding angle of the one-way valve piece 2 reaches the design requirement and has a larger opening angle for breathing; in addition, the pulling reset part 451 extends through the compression swing piece 44 and is provided with a corresponding limiting block 4512 at the end part, when the flexible pressing piece 43 drives the driving execution piece 45 to reset, the pulling reset part 451 of the driving execution piece 45 can pull the compression swing piece 44 to reset.

[0067] The mounting valve seat 41 is integrally formed and fixed with a cylindrical fixing part 413 for mounting the flexible pressing piece 43 on the inside of the embedded circular hole 411, the flexible pressing piece 43 can be detachably mounted on the mounting valve seat 41 by sleeving the clamping groove 434 on the cylindrical fixing part 413 and cooperating with the limiting fixture 42.

[0068] The flexible pressing piece 43 is integrally formed and protrudes on the inside of the pressing part 431 and is provided with a reinforcing rib ring 436, the reinforcing rib ring 436 is provided on the outer edge of the clamping part 435 and is spaced apart from the clamping part 435.

[0069] By integrally forming and protruding a reinforcing rib ring 436 on the inside of the pressing part 431 of the flexible pressing piece 43, the reinforcing rib ring 436 is spaced apart from the clamping part 435, which not only ensures the pressing and resetting function of the flexible pressing piece 43, but also strengthens the strength of the flexible pressing piece 43 and enhances the service life.

[0070] The sealing rubber body 3 is integrally formed and spaced apart and provided with a plurality of connecting parts 301 for connecting the wearing rope at the folded connection part, which is convenient for wearing the protective mask; the mask body 1 is detachably clamped with a corresponding valve piece mounting seat 5 for mounting and fixing the one-way valve piece 2 at the position of the air outlet hole 102, which is convenient for quickly and stably mounting the one-way valve piece 2.

[0071] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make several improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A protective mask with a function of rapid testing of wearing tightness, characterized in that: include: A mask body (1), wherein both sides of the mask body (1) are provided with corresponding air inlet holes (101), and a corresponding air outlet hole (102) is provided in the middle of the lower side; A set of filter mechanisms, each detachably mounted on the outer sides of the corresponding suction holes (101) of the mask body (1); A one-way valve (2) is movably mounted on the mask body (1) outside the air outlet (102), and the one-way valve (2) can be opened outward when inhaling and closed when exhaling; A sealing rubber body (3) is mounted on the edge of the mask body (1) on the side close to the human face, and the edge of the sealing rubber body (3) is folded inwards; A pressure detection mechanism (4) is mounted on the front end of the mask body (1) where the air inhalation hole (101) is provided and is used to press the one-way valve sheet (2). The pressure detection mechanism (4) comprises: A mounting valve seat (41) is fixedly mounted on the mask body (1), wherein the mounting valve seat (41) is provided with a corresponding embedded circular hole (411) at a position corresponding to the one-way valve plate (2); The limiting fixing member (42) comprises a pressing portion (421) arranged in a cylindrical shape, the inner end portion of the pressing portion (421) is integrally formed with an annular limiting plate (422) arranged outward, and the upper side of the annular limiting plate (422) is integrally formed and upwardly connected to a corresponding hinge shaft (423); the pressing portion (421) is fixedly inserted into the embedded circular hole (411) of the mounting valve seat (41), the annular limiting plate (422) is arranged on the inner side of the embedded circular hole (411), and the pressing portion (421) and the inner wall of the embedded circular hole (411), as well as the annular limiting plate (422) and the inner end portion of the embedded circular hole (411) are respectively spaced apart. The flexible pressing member (43) comprises a pressing portion (431), a cylindrical mounting portion (432) folded from the edge of the pressing portion (431), the cylindrical mounting portion (432) being clamped between the pressing portion (421) and the embedded circular hole (411), and the cylindrical mounting portion (432) is provided with a circle of clamping reinforcement pressing convex edge (433) at the connection with the pressing portion (431); the inner end portion of the cylindrical mounting portion (432) is folded outward in an inverted L shape and provided with a corresponding clamping groove (434), and the clamping groove (434) is fixedly clamped between the annular limiting plate (422) and the embedded circular hole (411); The pressing swing member (44) is hingedly mounted on the hinge shaft (423) of the position-limiting fixing member (42), and a corresponding driving actuator (45) is mounted on the pressing portion (431). The inner end of the driving actuator (45) is arranged in an inclined shape and is provided with a pulling reset portion (451) extending through and to the inner side of the pressing swing member (44).

2. A protective mask with a function of rapid testing of wearing tightness according to claim 1, characterized in that: A corresponding clamping platform (414) is recessed inwardly on the inner side of the embedded circular hole (411), and a clamping plane (4321) adapted to the clamping platform (414) is provided on the outer side of the cylindrical mounting portion (432).

3. The protective mask with a function of rapid testing of wearing tightness according to claim 1, characterized in that: The pressing portion (431) is provided in an outwardly convex arc shape, and a circle of corresponding buffer arc grooves (437) is provided inwardly at the connection between the pressing portion (431) and the cylindrical mounting portion (432).

4. The protective mask with a function of rapid testing of wearing tightness according to claim 1, characterized in that: The limiting fixing member (42) is provided with a plurality of fixed mounting portions (424) on the periphery of the annular limiting plate (422), and the inner side of the mounting valve seat (41) is provided with a plurality of plug-in members (412) adapted to the fixed mounting portions (424), so that the limiting fixing member (42) can be detachably mounted on the mounting valve seat (41) by plugging.

5. The protective mask with a function of rapid testing of wearing tightness according to claim 1, characterized in that: The flexible pressing member (43) is integrally formed with a clamping portion (435) for clamping the driving actuator (45) in the middle of the inner side of the pressing portion (431), and the driving actuator (45) is detachably mounted on the inner side of the flexible pressing member (43) by clamping.

6. The protective mask with a function of rapid testing of wearing tightness according to claim 1, characterized in that: The pressing swing member (44) comprises a pressing portion (441) adapted to the one-way valve plate (2), an integrally formed hooking portion (442) arranged on both sides of the top of the pressing portion (441), and a boss-shaped reset portion (443) arranged in the middle of the pressing portion (441) and adapted to the pressing portion (421).

7. The protective mask with a function of rapid testing of wearing tightness according to claim 6, characterized in that: The pulling reset portion (451) includes a pulling rod (4511) passing through the pressed swing member (44), and a reset block (4512) integrally formed and arranged at the end of the pulling rod (4511); the middle part of the boss-shaped reset portion (443) is longitudinally provided with an elongated hole (4431) with a hole diameter larger than the diameter of the pulling rod (4511) and smaller than the diameter of the reset block (4512); the lower end of the elongated hole (4431) is provided with a mounting hole (4432) connected to it and with a hole diameter larger than the diameter of the reset block (4512); the pulling rod (4511) passes through the elongated hole (4431) and is movably mounted on the boss-shaped reset portion (443) of the pressed swing member (44).

8. The protective mask with a function of rapid testing of wearing tightness according to claim 1, characterized in that: The mounting valve seat (41) is located on the inner side of the embedded circular hole (411) and is integrally formed with a cylindrical fixing member (413) for mounting the flexible pressing member (43). The cylindrical fixing member (413) is mounted on the mounting valve seat (41) through a slot (434) and is fixed in conjunction with the position-limiting fixing member (42), so that the flexible pressing member (43) is detachably mounted on the mounting valve seat (41).

9. The protective mask with a function of rapid testing of wearing tightness according to claim 5, characterized in that: The flexible pressing member (43) is located on the inner side of the pressing portion (431) and is integrally formed with a reinforcing rib ring (436). The reinforcing rib ring (436) is arranged on the outer edge of the clamping portion (435) and is spaced apart from the clamping portion (435).

10. The protective mask with a function of rapid testing of wearing tightness according to claim 1, characterized in that: The sealing rubber body (3) is provided with a plurality of connectors (301) for connecting a wearing rope, which are integrally formed at intervals at the folded joint; the mask body (1) is detachably connected to a corresponding valve plate mounting seat (5) for mounting and fixing the one-way valve plate (2) at the position of the air outlet (102).

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