Mask body

Abstract

The present invention relates to a mask body capable of shielding a mouth and a nose of a user, comprising: a shielding member, an inner housing, an outer cover, a wearing member, a suction assembly, a filter material, and a power supply, in which a collection space is formed between the shielding member and a face of the user, the inner housing having a first opening and a second opening for communicating the collection space, the outer cover having a second opening for communicating the collection space, the outer cover body is detachably connected with the inner shell body, so that a pre-storage channel is formed between the outer cover body and the inner shell body, the fan is rotated to generate suction airflow, a pre-storage path is formed between an air inlet opening of the pre-storage channel and a first opening and used for changing the distance between the nose of a user and the air inlet opening, and when the user generates high-pressure exhaust, the pre-storage path is used for changing the distance between the nose of the user and the air inlet opening. Part of gas of the high-pressure exhaust gas enters the pre-storage channel firstly, and then is continuously sucked by the suction airflow to contact with the filter material through the second opening, so that the gas cannot flow out of the gas inlet opening.

Description

TECHNICAL FIELD

[0001] The present invention relates to a mask body capable of shielding the mouth and nose of a user, and in particular, to a mask body capable of increasing the path distance between an air inlet opening and a collection space by a pre-storage channel. BACKGROUND

[0002] The design purpose of a mask is to shield the mouth and nose of a wearer, and the mask can filter most of the harmful substances such as suspended particles and dust in the air, thereby blocking viruses and bacteria in the air from entering the mouth and nose of the wearer.

[0003] Among them, the filter type respiratory protection device is a kind of mask, and the filter type respiratory protection device has a filter tank or filter to filter the air inhaled by the wearer, thereby reducing the harmful substances in the air directly flowing into the mouth and nose of the wearer, but the exhaled gas of the wearer contains viruses or bacteria, and the viruses or bacteria are directly discharged into the air without being filtered, which will pollute the air, so that the air inhaled by the wearer contains a high content of viruses or bacteria.

[0004] In addition, when the wearer wears a mask to inhale air, the air around the mask will directly enter the mouth and nose of the wearer through the mask body, and the bacteria or viruses exhaled by the wearer will mix with the external air, so that the bacteria or viruses exhaled by the wearer can be brought into the mask in large quantities and enter the mouth and nose of the wearer, thereby making the wearer inhale a high proportion of bacteria or viruses. SUMMARY

[0005] The main purpose of the present invention is to provide a mask body with a pre-storage channel, so that the path distance between the air inlet opening and the collection space is increased, and part of the high-pressure exhaust gas generated by the user will first enter the pre-storage channel, and then be continuously sucked back to the collection space by the suction flow, thereby all high-pressure exhaust gas will contact the filter material through the second opening and cannot flow out from the air inlet opening.

[0006] The secondary purpose of the present invention is that the first opening cross section of the first opening and the pre-storage channel cross section of the pre-storage channel have the same cross-sectional area, so that the external air can continuously flow from the pre-storage channel into the first opening, and thereby the external air will not be affected and changed in the flow path due to the difference in cross-sectional area between the pre-storage channel cross section and the first opening cross section, thereby reducing the flow loss of the external air when entering the mask body.

[0007] Another purpose of the present invention is that the outer cover body can be selectively replaced, so that the user can assemble different types of outer cover bodies on the inner shell according to different situations, thereby the path distance formed between the air inlet opening and the collection space can be changed.

[0008] To achieve the aforementioned object, the present application provides a mask body capable of shielding a mouth and a nose of a user, and comprising a cover, an inner housing, an outer cover, a wearing part, a suction assembly, filter material, and a power supply, wherein the cover has a contact portion fitted to a face contour of the user and a cover portion extending forward from the contact portion, so that a collection space is formed inside the cover portion, and the cover portion is provided with a mounting opening, the inner housing is connected to the mounting opening and configured with a first opening above the nose and a second opening below the nose to communicate with the collection space, and an outer side of the inner housing is configured with a male connecting portion.

[0009] In a first preferred embodiment, the outer cover has a flow guide portion shielding the first opening and a female connecting portion detachably connected to the male connecting portion, the flow guide portion contacts an outer side surface of the inner housing and the cover, so that a pre-storage channel is formed between the outer cover and the inner housing, one end of the pre-storage channel communicates with the collection space through the first opening, and an air inlet opening is formed at the other end of the pre-storage channel, in addition, the wearing part is connected to the mask body, so that the mask body can be positioned on the head of the user.

[0010] In addition, the flow guide portion has a first extension section, a turning section, and a second extension section, the turning section is arranged between the first extension section and the second extension section, and an external air can be changed in a moving direction of the flow guide portion through the turning section, so that the external air can enter the first opening, in addition, the external air enters the first opening along a movement path from the air inlet opening, two opposite sides of the movement path communicate with an air inlet opening contour of the air inlet opening and the first opening contour of the first opening, so that the external air can enter the first opening from any position on the air inlet opening contour along the movement path to any position of the first opening contour, and each movement path has the same path length in the collection space.

[0011] In addition, the first opening has a first opening contour, and the first opening contour of the first opening is consistent with a pre-storage channel contour of the pre-storage channel, so that a first opening cross section of the first opening and a pre-storage channel cross section of the pre-storage channel have the same cross-sectional area.

[0012] In addition, the first extension section is extended to approach the second opening, so that the pre-storage channel cross section has a shielding cross section shielded by the second opening and an exposed cross section not shielded by the second opening, and the exposed cross section has the same cross-sectional area as the first opening cross section.

[0013] Preferably, the male connecting portion of the inner housing has a guide rail and a fastener, and the female connecting portion of the outer cover has a clamping section, when the outer cover is assembled to the outside of the inner housing along the vertical direction, the clamping section is positioned between the guide rail and the fastener.

[0014] In addition, the suction assembly has an exhaust pipeline assembled to the second opening and a fan assembled to the exhaust pipeline, and the filter material is installed in the suction assembly, wherein the power supply is electrically connected to the fan, and the fan is rotated to generate a suction airflow, so that the air in the collection space can be discharged towards the second opening.

[0015] Furthermore, a pre-storage path formed between the air inlet opening and the first opening is used to change the distance between the user's nose and the air inlet opening; when the user generates a high-pressure exhaust gas, a part of the high-pressure exhaust gas will first enter the pre-storage passage, and then be continuously attracted back to the collection space by the suction airflow, thereby all the high-pressure exhaust gas will pass through the second opening to contact the filter material, and cannot flow out from the air inlet opening.

[0016] In addition, a second opening cross section of the second opening is greater than the first opening cross section, so that a collection space cross section of the collection space gradually increases from the first opening to the second opening, thereby prolonging the time of the high-pressure exhaust gas staying in the collection space, thereby increasing the opportunity of the high-pressure exhaust gas contacting the suction airflow.

[0017] In a second preferred embodiment, the outer cover has at least one flow guide member to separate the pre-storage passage into a plurality of flow guide passages, so that the external air can enter the first opening through a plurality of the flow guide passages, wherein the flow guide member can be a sponge arranged inside the outer cover, so that the external air can enter the first opening through the sponge

[0018] The present application is characterized in that the mask body has an outer cover body selectively assembled with the inner housing to form a pre-storage passage between the inner housing and the outer cover body, the shield has a contact portion matching the user's face contour and a cover portion extending forward from the contact portion so that a collection space is formed inside the cover portion, the inner housing is connected to a mounting opening of the cover portion, the inner housing is configured with a first opening above the nose portion and a second opening below the nose portion to communicate with the collection space, and the outer side of the inner housing is configured with a male connecting portion, wherein the first opening has a first opening contour, the first opening contour of the first opening matches a pre-storage passage contour of the pre-storage passage, the first opening cross section of the first opening has the same cross-sectional area as the pre-storage passage cross section of the pre-storage passage, and the outer cover body has a flow guide portion shielding the first opening and a female connecting portion detachably connected to the male connecting portion, so that the pre-storage passage is formed between the outer cover body and the inner housing, one end of the pre-storage passage is communicated with the collection space through the first opening, and an air inlet opening is formed at the other end of the pre-storage passage, so that the path distance between the air inlet opening and the collection space is increased through the pre-storage passage, in addition, the power supply is electrically connected to the fan to rotate the fan to generate a suction airflow, so that the air in the collection space can be discharged towards the second opening, thereby the path distance between the air inlet opening and the collection space is increased through the pre-storage passage, in addition, when the user generates high pressure exhaust gas, part of the gas of the high pressure exhaust gas will first enter the pre-storage passage, and then be continuously attracted back to the collection space by the suction airflow, thereby all high pressure exhaust gas will pass through the second opening to contact the filter material, and cannot flow out from the air inlet opening. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a perspective view of the mask body in the first preferred embodiment of the present application;

[0020] Figure 2 is a schematic view of the mask body worn on the user in the first preferred embodiment of the present application;

[0021] Figure 3 is an exploded view of the mask body in the first preferred embodiment of the present application;

[0022] Figure 4A is a schematic view of the shield and the inner housing in the first preferred embodiment of the present application;

[0023] Figure 4B is a cross-sectional view of the shield assembled with the inner housing in the first preferred embodiment of the present application;

[0024] Figure 5A and Figure 5B is a schematic view of the outer cover body in the first preferred embodiment of the present application;

[0025] Figure 6A is a schematic view of the first opening cross section in the first preferred embodiment of the present application;

[0026] Figure 6B Schematic view of the pre-storage channel cross-section in the first preferred embodiment;

[0027] Figure 6C Schematic view of the second opening cross-section in the first preferred embodiment;

[0028] Figure 7 Schematic view of the mask body operation to create a suction air flow in the first preferred embodiment of the application;

[0029] Figure 8 Schematic view of the mask body operation to create a suction air flow in the first preferred embodiment of the application;

[0030] Figure 9 Schematic view of the mask body cross-section in the second preferred embodiment;

[0031] Figure 10 Schematic view of the external air flow through the flow guide channel in the second preferred embodiment;

[0032] Figure 11 With Figure 12 Schematic view of the shield, inner shell, outer cover and fitting in the third preferred embodiment;

[0033] Figure 13 Schematic view of the shield and inner shell in the third preferred embodiment;

[0034] Figure 14 Schematic view of the shield assembly in the inner shell cross-section in the third preferred embodiment;

[0035] Figure 15 With Figure 16 Schematic view of the outer cover in the third preferred embodiment;

[0036] Figure 17 Schematic view of the pre-storage channel cross-section in the third preferred embodiment.

[0037] Reference numerals: 1 - mask body; 2 - user; 21 - head; 22 - face contour; 23 - mouth; 24 - nose; 25 - ear; 3 - shielding member; 31 - contact portion; 32 - covering portion; 33 - collection space; 34 - mounting opening; 35 - opening; 4 - inner housing; 41 - inner housing body; 411 - outer wall; 412 - outer wall; 42 - exhaust pipe body; 43 - first opening; 431 - first opening contour; 432 - first opening cross section; 44 - male connecting portion; 441 - guide rail; 442 - fastener; 45 - protrusion; 46 - second opening; 461 - second opening cross section; 47 - groove; 5 - outer cover body; 51 - flow guide portion; 511 - first extension section; 512 - turning section; 513 - second extension section; 514 - polygonal contour; 515 - outer wall; 516 - outer wall; 517 - outer wall; 52 - female connecting portion; 53 - clamping section; 54 - pre-storage passage; 541 - flow guide passage; 55 - air inlet opening; 551 - air inlet opening contour; 56 - pre-storage passage contour; 57 - pre-storage passage cross section; 58 - flow guide member; 6 - wearing member; 61 - combination portion; 62 - elastic portion; 63 - clamping block; 64 - opening; 7 - suction assembly; 71 - exhaust pipe; 72 - fan; 73 - inlet end; 74 - outlet end; 75 - first adapter; 751 - first pipe body; 752 - enlarged pipe; 76 - second adapter; 761 - adapter end; 77 - mounting shell; 771 - circular wall; 772 - square wall; 8 - filter material; 9 - power supply; F1 - high-pressure exhaust; F2 - suction airflow; F3 - external air. DETAILED DESCRIPTION

[0038] The advantages and features of the present application will become more apparent with the following description in conjunction with the accompanying drawings.

[0039] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 7 , the mask body 1 of the present application can be worn by a user 2 in front of a head 21 at a face contour 22 position, so that the mask body 1 can shield a mouth 23 and a nose 24 of the user 2, and thus a high-pressure exhaust F1 generated by the nose 24 of the user 2 when breathing, sneezing, and the mouth 23 when talking and coughing can be sucked and collected by the mask body 1, and clean air can be discharged after filtration, thereby avoiding the spread of diseases such as influenza, enterovirus, or COVID-19 to others through droplets.

[0040] As shown in Figure 2 , Figure 3 , Figure 4A , Figure 4B and Figure 7As shown, in the first preferred embodiment, the mask body 1 is mainly composed of a shielding member 3, an inner housing 4, an outer cover 5, a wearing member 6, a suction assembly 7, a filter material 8, and a power supply 9. The shielding member 3 has a contact portion 31 fitted to the face contour 22 of the user 2 and a covering portion 32 extended forwardly from the contact portion 31, so that a collection space 33 is formed inside the covering portion 32, and the covering portion 32 is provided with a mounting opening 34 and a plurality of openings 35 arranged at the periphery of the mounting opening 34. There is no limitation on the material of the shielding member 3, which can be a skin-friendly material such as silicone or latex.

[0041] As shown in Figure 2 , Figure 4A , Figure 4B , Figure 6B and Figure 6C , in the first preferred embodiment, the inner housing 4 is connected to the mounting opening 34, and the inner housing 4 has an inner housing body 41 and an exhaust pipe body 42 extended from the inner housing body 41. The inner housing body 41 is configured with a first opening 43, a male connecting portion 44, and a plurality of protrusions 45. The first opening 43 is located above the nose 24. The male connecting portion 44 is arranged on an outer side configuration of the inner housing 4, and the male connecting portion 44 has a guide rail 441 and a fastener 442. The guide rail 441 and the fastener 442 are arranged on the outer surface of the inner housing body 41. The plurality of protrusions 45 are arranged on the outer edge of the inner housing 4. In this preferred embodiment, the first opening 43 is arranged in front of the nose 24 of the user 2, and the opening direction of the first opening 43 is toward the outer cover 5 to form a first opening contour 431. In this embodiment, the first opening contour 431 is arc-shaped. The exhaust pipe body 42 has a second opening 46 located below the nose 24. In this embodiment, the second opening 46 is adjacent to the mouth 23 of the user 2, and the first opening 43 and the second opening 46 are communicated in the collection space 33. The guide rail 441 and the fastener 442 are arranged between the first opening 43 and the second opening 46. In this embodiment, the inner housing body 41 is configured with an arc-shaped outer wall 411 between the first opening 43 and the second opening 46. In this embodiment, the protrusions 45 of the inner housing 4 are buckled through the openings 35 of the shielding member 3, so that the shielding member 3 is connected to the periphery of the inner housing 4. Thus, when the inner housing 4 is fixed to the head 21 of the user 2, the shielding member 3 is pressed to fit the face contour 22 of the user 2.

[0042] As shown inFigure 3 、 Figure 4A 、 Figure 4B 、 Figure 5A 、 Figure 5B 、 Figure 6A With Figure 6B As shown in FIG. 1, in a first preferred embodiment, the outer cover 5 is configured with a flow guide portion 51 and a female connecting portion 52 extending from the flow guide portion 51, the flow guide portion 51 has a first elongated section 511, a turning section 512 and a second elongated section 513, the turning section 512 is disposed between the first elongated section 511 and the second elongated section 513, so that the flow guide portion 51 can shield the first opening 43, in this embodiment, the first elongated section 511 is configured with a polygonal profile outer wall 514 and the turning section 512 is configured with a polygonal profile outer wall 515, however, the female connecting portion 52 is disposed on the outer periphery of the outer cover 5, and the female connecting portion 52 has a clamping section 53 connecting the first elongated section 511 and the turning section 512, wherein the clamping section 53 of the outer cover 5 is moved to approach the male connecting portion 44 of the inner housing 4, so that the clamping section 53 can be assembled along the guide rail 441 to the fastener 442 of the inner housing 4, so that the outer cover 5 can be assembled along the vertical direction to the outside of the inner housing 4, and then the clamping section 53 can be clamped and positioned between the guide rail 441 and the fastener 442, and the flow guide portion 51 can contact an outer side surface of the inner housing 4 and the shield 3, thereby the second elongated section 513 can be fitted to an outer wall of the inner housing 4, so that the outer cover 5 can be tightly fitted to the inner housing 4, and then a pre-storage channel 54 is formed between the outer cover 5 and the inner housing 4, and one end of the pre-storage channel 54 is communicated with the collection space 33 through the first opening 43, and an air inlet opening 55 is formed at the other end of the pre-storage channel 54, so that the face mask body 1 is detachably connected to the male connecting portion 44 through the female connecting portion 52, and then the outer cover 5 can be selectively assembled or detached from the outer periphery of the inner housing 4.

[0043] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4A With Figure 6CAs shown, in the first preferred embodiment, the wearing member 6 has a combination part 61 and an elastic part 62 connected to the combination part 61, when the combination part 61 is assembled in a groove 47 of the buckle 442, so that the wearing member 6 is connected to the male connecting part 44 of the inner casing 4, so that the two wearing members 6 are arranged on both sides of the outer cover 5, and the elastic part 62 is an independently formed elastic rope surrounding space, so that the elastic rope can be wrapped around an ear 25 of the user 2, so that the mask body 1 can be positioned on the head 21 of the user 2 by the elastic force, however, without limiting the structure of the wearing member 6, the wearing member 6 can be a stretchable material to directly bind to the male connecting part 44 of the inner casing 4.

[0044] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 7 As shown, in the first preferred embodiment, the suction assembly 7 has an exhaust pipe 71 and a fan 72, the exhaust pipe 71 is assembled in the second opening 46 of the inner casing 4, and the fan 72 is assembled at the tail end of the exhaust pipe 71, wherein the two opposite sides of the exhaust pipe 71 have an inlet end 73 and an outlet end 74, the exhaust pipe 71 further includes a first adapter 75 constituting the inlet end 73, a second adapter 76 constituting the outlet end 74, and a mounting shell 77 between the first adapter 75 and the second adapter 76, the first adapter 75 has a first pipe body 751 connected to the second opening 46 and an enlarged pipe 752 connected to the first pipe body 751, and the first pipe body 751 tapers from the second opening 46 to the enlarged pipe 752, however, the top and bottom of the mounting shell 77 are configured with a circular wall 771 adjacent to the enlarged pipe 752 of the first adapter 75 and a square wall 772 adjacent to the second adapter 76, the circular wall 771 is configured with a first flow cross section, and the square wall 772 is configured with a second flow cross section, wherein the second flow cross section is larger than the first flow cross section, in addition, the second adapter 76 has an adapter end 761 connected to the square wall 772 and the outlet end 74 connected to the fan 72, wherein a tapered wall surface is formed between the adapter end 761 and the outlet end 74, so that the second flow cross section is larger than an outlet cross section of the second adapter 76, furthermore, the filter material 8 is installed inside the mounting shell 77 of the suction assembly 7 and is configured with multiple folded surfaces to increase the contact area of the filter.

[0045] As shown in Figure 2 , Figure 3、 Figure 7 and Figure 8 As shown, in the first preferred embodiment, the power supply 9 is electrically connected to the fan 72 of the suction assembly 7, so that the fan 72 can rotate continuously to generate a suction airflow F2, and the suction airflow F2 is generated in the collecting space 33 inside the shielding member 3. Since a pressure difference is formed inside the inner shell 4 due to the fan 72, an external air F3 will first enter the interior of the outer cover 5 from the air inlet opening 55, and pass through the first extension section 511 and the turning section 512 of the outer cover 5 in sequence. When the external air F3 passes through the When the turning section 512 is formed, the external air F3 will be changed in a moving direction of the guide portion 51, so that the external air F3 enters the inner shell 4 from the first opening 43 through the pre-storage channel 54, so that the external air F3 can continuously enter the pre-storage channel 54 to be provided to the user 2 for use, thereby allowing the external air F3 to continuously enter the first opening 43, thereby forming a pre-storage path between the air inlet opening 55 and the first opening 43, and the pre-storage path is used to change the relationship between the nose 24 of the user 2 and the inlet The distance between the air openings 55 increases the time that the external air F3 stays in the mask body 1. However, when the user 2 generates the high-pressure exhaust F1 when breathing, sneezing, talking or coughing, a portion of the high-pressure exhaust F1 will first enter the pre-storage channel 54 and then be continuously drawn back to the collection space 33 by the suction airflow F2. As a result, all of the high-pressure exhaust F1 and the air 1 in the collection space 33 will be collected by the inner shell 4 and discharged through the second opening 46 along with the external air F3 to enter the suction assembly 7. Finally, it is discharged from the other side of the fan 72, wherein the filter material 8 is distributed on an airflow path generated by the suction airflow F2, so that the external air F3 and the high-pressure exhaust gas F1 will pass through the filter material 8, ensuring that the viruses in the exhaust gas can be filtered out, and thus the high-pressure exhaust gas F1 cannot flow out from the air inlet opening 55. Moreover, the high-pressure exhaust gas F1 that passes through the filter material 8 and moves out of the mask body 1 will be mixed with the external air F3 again, so that the mixed high-pressure exhaust gas F1 will enter the first opening 43 again through the pre-storage channel 54.

[0046] See also Figure 6A 、 Figure 6B 、 Figure 6C Figure 7 and Figure 8As shown, in the first preferred embodiment, the first opening profile 431 of the first opening 43 is consistent with a pre-storage passage profile 56 of the pre-storage passage 54, which is arranged between the outer wall 411 of the inner housing body 41 and the outer wall 514 of the first extension section 511 and between the outer wall 411 of the inner housing body 41 and the outer wall 515 of the turning section 512, so that a first opening cross section 432 of the first opening 43 has the same cross-sectional area as a pre-storage passage cross section 57 of the pre-storage passage 54. Thus, when the external air F3 passes through the pre-storage passage 54 along a pre-storage path from the air inlet opening 55 to the first opening 43, the two different sides of the movement path are connected to an air inlet opening profile 551 of the air inlet opening 55 and the first opening profile 431 of the first opening 43, so that the external air F3 can enter the first opening profile 431 from any position on the air inlet opening profile 551 along the pre-storage path, and each pre-storage path has the same path length in the collection space 33, so that the external air F3 can continue to move without changing the movement path due to the change in the cross-sectional area of the pre-storage passage cross section 57 or the first opening cross section 432, thereby reducing the flow loss of the external air F3. In addition, there is no limitation on the shape of the first extension section 511 of the outer cover body 5, and the first extension section 511 can be extended towards the air inlet opening 55, so that the first extension section 511 is close to the second opening 46, and the pre-storage passage cross section 57 of the pre-storage passage 54 has a shielding cross section shielded by the second opening 46 and an exposed cross section not shielded by the second opening 46, which is arranged on both sides of the second opening 46 and has the same cross-sectional area as the first opening cross section 432.

[0047] In addition, the second opening cross section 461 of the second opening 46 is larger than the first opening cross section 432 of the first opening 43, so that the collection space cross section gradually increases from the first opening 43 to the second opening 46, thereby prolonging the time for the high-pressure exhaust gas F1 to stay in the collection space 33, thereby increasing the opportunity for the high-pressure exhaust gas F1 to contact the suction air flow F2.

[0048] Please refer to Figure 9 and Figure 10As shown, in the second preferred embodiment, the difference from the first preferred embodiment is that the structure of the outer cover 5, and the structures of the shield 3, the inner housing 4, the wearing member 6, the suction assembly 7, the filter material 8, and the power supply 9 are the same as those of the first preferred embodiment, and thus are not described again. As shown, the outer cover 5 in the second preferred embodiment has at least one flow guide 58 more than the outer cover 5 in the first preferred embodiment. In this embodiment, the flow guide 58 is disposed inside the outer cover 5, and the flow guide 58 is composed of a plate parallel to the guide rail 441. The flow guide 58 separates the pre-storage channel 54 into a plurality of flow guide channels 541, so that the external air F3 can enter the first opening 43 through the flow guide channels 541, and the external air F3 is rectified or guided before entering the first opening 43, so that the external air F3 can continuously flow through the pre-storage channel 54. Therefore, the airflow intensity of the external air F3 through a central region of the pre-storage channel 54 and an outer region disposed on both sides of the central region is maintained the same. In addition, the structure of the flow guide 58 is not limited, and the flow guide 58 can be a sponge, so that the sponge is disposed inside the outer cover 5, and the external air F3 can enter the first opening 43 through the sponge.

[0049] Please refer to Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15 , Figure 16 and Figure 17As shown in FIG. 3, the difference between the third preferred embodiment and the first preferred embodiment is the appearance of the inner housing 4 and the outer cover 5, and the appearance and structure of the wearing member 6. The structure of the inner housing 4 and the outer cover 5 is the same as that of the first preferred embodiment. The appearance and structure of the shield 3, the suction assembly 7, the filter material 8, and the power supply 9 are the same as those of the first preferred embodiment, and thus are not described again. As shown in FIG. 3, in the third preferred embodiment, the first opening profile 431 of the inner housing 4 is a strip shape, and the inner housing body 41 of the inner housing 4 is configured with a flat outer wall 412 between the first opening 43 and the second opening 46. The first extension segment 511 of the outer cover 5 is configured with a horizontally profiled outer wall 516, and the turning segment 512 is configured with a horizontally profiled outer wall 517, so that the pre-storage passage profile 56 is arranged between the outer wall 412 of the inner housing body 41 and the outer wall 516 of the first extension segment 511, and between the outer wall 412 of the inner housing body 41 and the outer wall 517 of the turning segment 512. Thus, the first opening profile 431 of the first opening 43 is consistent with the pre-storage passage profile 56 of the pre-storage passage 54, and a first opening cross section of the first opening 43 has the same cross-sectional area as the pre-storage passage cross section 57 of the pre-storage passage 54.

[0050] Please continue to refer to Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15 , Figure 16 and Figure 17 As shown in FIG. 3, the wearing member 6 has a combination part 61 and an elastic part 62 connected to the combination part 61. The combination part 61 has a hook block 63 and a plurality of holes 64. When the hook block 63 is buckled in the groove 47 of the fastener 442, the combination part 61 is assembled on the fastener 442, so that the two combination parts 61 of the wearing member 6 are positioned on the left and right sides of the outer cover 5. Furthermore, two different ends of the elastic part 62 are inserted into a plurality of the holes 64, so that the elastic part 62 is connected to the combination part 61, and thus the wearing member 6 is connected to the male connecting part 44 of the inner housing 4.

[0051] The above description is only illustrative and not restrictive. Those skilled in the art understand that many modifications, changes or equivalents can be made without departing from the spirit and scope of the claims, which will fall within the protection scope of the present application.

Claims

1. A mask body capable of shielding a mouth and a nose of a user, characterized in that, The mask body comprises: a shield having a contact portion fitted to a face contour of the user and a cover portion extended forwardly from the contact portion, so that a collection space is formed inside the cover portion, and the cover portion is provided with a mounting opening; an inner housing connected to the mounting opening and configured with a first opening above the nose portion and a second opening below the nose portion, the first and second openings communicating with the collection space, and an outer side of the inner housing is configured with a male connecting portion; an outer cover body having a flow guide portion shielding the first opening and a female connecting portion detachably connected to the male connecting portion, the flow guide portion contacting an outer side surface of the inner housing and the shield, so that a pre-storage channel is formed between the outer cover body and the inner housing, one end of the pre-storage channel communicates with the collection space through the first opening, and an air inlet opening is formed at the other end of the pre-storage channel; a wearing member connected to the mask body, so that the mask body can be positioned on the head of the user; a suction assembly having an exhaust pipeline assembled to the second opening and a fan assembled to the exhaust pipeline; a filter material installed in the suction assembly; a power supply electrically connected to the fan, the fan being rotated to generate a suction airflow, so that the air in the collection space can be discharged toward the second opening; wherein a pre-storage path formed between the air inlet opening and the first opening is used to change the distance between the nose of the user and the air inlet opening; when the user generates a high-pressure exhaust gas, a part of the gas of the high-pressure exhaust gas will first enter the pre-storage channel, and then be continuously attracted back to the collection space by the suction airflow, thereby all the high-pressure exhaust gas will pass through the second opening to contact the filter material, and cannot flow out from the air inlet opening.

2. The mask body of claim 1, wherein: The first opening has a first opening contour, and the first opening contour of the first opening is consistent with a pre-storage channel contour of the pre-storage channel, so that a first opening cross section of the first opening and a pre-storage channel cross section of the pre-storage channel have the same cross-sectional area.

3. The mask body of claim 2, wherein: The flow guide portion has a first extension section, a turning section, and a second extension section, and the turning section is arranged between the first extension section and the second extension section, and an external air can be changed in a moving direction of the flow guide portion through the turning section, so that the external air can enter the first opening.

4. The mask body of claim 3, wherein: The external air enters the first opening along the pre-storage path from the air inlet opening, and two opposite sides of the pre-storage path communicate with an air inlet opening contour of the air inlet opening and the first opening contour of the first opening, so that the external air can enter the first opening from any position on the air inlet opening contour along the pre-storage path to any position of the first opening contour, and each pre-storage path has the same path length in the collection space.

5. The mask body of claim 3, wherein: The first extension section is extended to approach the second opening, so that the pre-storage passage has a blocked cross-section blocked by the second opening and an exposed cross-section not blocked by the second opening, and the exposed cross-section has the same cross-sectional area as the first opening cross-section.

6. The mask body of claim 1, wherein: The male connecting portion of the inner housing has a guide rail and a fastener, and the female connecting portion of the outer cover has a clamping section, when the outer cover is assembled on the outer side of the inner housing along the vertical direction, the clamping section is positioned between the guide rail and the fastener.

7. The mask body of claim 2, wherein: A second opening cross-section of the second opening is larger than the first opening cross-section, so that a collection space cross-section of the collection space gradually increases from the first opening to the second opening, thereby prolonging the time for the high-pressure exhaust gas to stay in the collection space, thereby increasing the opportunity for the high-pressure exhaust gas to contact the suction air flow.

8. The mask body of claim 3, wherein: The outer cover has at least one flow guide member to separate the pre-storage passage into a plurality of flow guide passages, so that the external air can enter the first opening through a plurality of the flow guide passages.

9. The mask body of claim 8, wherein: The flow guide member is a sponge and is arranged inside the outer cover, so that the external air can enter the first opening through the sponge.

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