CN114602075A

CN114602075A - Integrative dual-purpose oxygen mask

Info

Publication number: CN114602075A
Application number: CN202210229052.0A
Authority: CN
Inventors: 李栋梁; 董众豹; 马迪; 刘彤; 闫亚辉; 郭佳能
Original assignee: 718th Research Institute of CSIC
Current assignee: 718th Research Institute of CSIC
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2022-06-10
Anticipated expiration: 2042-03-10
Also published as: CN114602075B

Abstract

The invention relates to an integrated dual-purpose oxygen mask, and belongs to the technical field of emergency oxygen supply. The oxygen mask comprises a mask cup assembly, a gas storage bag assembly and an oxygen supply catheter assembly; the mask cup assembly comprises a mask cup main body, a panel and a dual-purpose interface connecting piece; one end of the main body of the mask cup is a connecting end, and the other end is an oxygen inhalation end; the periphery of the panel is hermetically connected with the connecting end of the mask cup main body; the middle part of the panel is provided with a dual-purpose interface, an ambient air valve and an expiration valve; oxygen uptake ports are respectively arranged on the gas storage bag component and the oxygen supply conduit component; the dual-purpose interface connector is plugged into the oxygen inhalation port through the dual-purpose connector and is connected through structure matching, so that the mask cup assembly and the gas storage bag assembly can be connected with a chemical oxygen source for use or the mask cup assembly and the oxygen supply conduit assembly are connected with a gas cylinder oxygen source for use according to use requirements. The oxygen mask is suitable for civil aviation passengers, can be quickly assembled and disassembled, and breaks through the limitation that the oxygen mask in the prior art can only be used in a single scene.

Description

Integrative dual-purpose oxygen mask

Technical Field

The invention relates to an integrated dual-purpose oxygen mask, in particular to a civil aviation oxygen mask which can be used for a chemical oxygen source and a gas cylinder oxygen source, and belongs to the technical field of emergency oxygen supply.

Background

In civil aviation, a passenger oxygen mask is an oxygen separation device connected with oxygen supply equipment, and supplies emergency oxygen for passengers when the airplane is in high altitude decompression. At present, the oxygen supply equipment oxygen source that often uses on the aircraft mainly is chemical oxygen source and gas cylinder oxygen source, and the oxygen face guard that the outfit was used also mainly has two kinds: continuous flow oxygen masks and pulsed oxygen masks. The continuous airflow oxygen mask is generally connected with a chemical oxygen source for use, and the adopted oxygen supply mode is continuous oxygen supply, in the prior art, the oxygen mask consists of a mask cup component and an air storage bag conduit component, the air storage bag is used for storing oxygen continuously generated by the chemical oxygen source, a sealing gasket is welded with the air storage bag at an oxygen inhalation port of the air storage bag and is fixed on the mask by a connecting element, the connecting element is positioned in the air storage bag, and the sealing gasket of the air storage bag is pressed on a preset sealing edge of the mask cup component and is used for connecting and sealing the air storage bag and the mask cup component; the assembly between the gas storage bag and the mask cup component is complex and difficult to disassemble, so that the gas storage bag is inconvenient to replace; similar techniques are known as passenger oxygen masks and breathing bags for oxygen masks as disclosed in chinese patent application CN 104096325A. The pulse oxygen mask is generally connected with an oxygen source of a gas cylinder for use, the adopted oxygen supply mode is intermittent oxygen supply, in the prior art, an oxygen mask main body is connected on a circuit board component through an oxygen supply conduit, a control system and a stop valve are integrated in the circuit board component, the pulse oxygen supply mechanism enables the oxygen flow to be intermittent, and a gas storage bag is not needed to store oxygen which is not inhaled, so the oxygen mask only comprises a mask main body and a conduit, the mask main body is fixedly connected with the conduit and cannot be detached, and the similar technology is as that of an oxygen emergency supply device for aircraft passengers and an aircraft with the device disclosed in the Chinese patent application CN 111434363A. The oxygen masks are limited to single use scenes, and the oxygen mask connected with the chemical oxygen source and the oxygen mask connected with the oxygen source of the gas cylinder cannot be used universally.

The civil aviation oxygen mask which can be used for a chemical oxygen source and a gas cylinder oxygen source is not available in the prior art, the continuous airflow oxygen mask and the pulse type oxygen mask respectively correspond to different oxygen supply modes, and the interfaces of the two masks are incompatible, so that the two masks cannot be used integrally.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide an integrated dual-purpose oxygen mask which is suitable for civil aviation passengers and can be connected with a chemical oxygen source and a gas cylinder oxygen source.

In order to achieve the purpose of the invention, the following technical scheme is provided.

An integrated dual use oxygen mask, said oxygen mask adapted for use by civil aviation passengers, the main components comprising: a mask cup assembly, a gas storage bag assembly and an oxygen supply conduit assembly.

The mask cup assembly mainly comprises a mask cup main body, a panel and a dual-purpose interface connecting piece.

One end of the main body of the face cover cup is a connecting end which is used for being connected with the face plate in a sealing way; the other end of the mask cup main body is an oxygen inhalation end which is used for covering the mouth and the nose of a human body in the oxygen supply process and is used as a terminal of the whole oxygen supply process.

Furthermore, the mask cup main body is in a tapered cup-shaped structure with one end being a narrow opening and the other end being a flared opening, one end of the narrow opening is a connecting end, and one end of the flared opening is an oxygen absorption end. The mask cup main body is made of materials which can be in direct contact with a human body and are harmless to the human body; the preferred material of the main body of the face cup is a silica gel soft cushion or polymethylvinylsiloxane.

The panel is of a plate-shaped structure with the shape matched with the connecting end of the mask cup main body, and the periphery of the panel is hermetically connected with the connecting end of the mask cup main body; preferably, the periphery of the faceplate is sealingly attached to the attachment end of the mask cup body by ultrasonic hot melt seal welding.

The connecting end bottom of the preferred face mask cup main body is inwards bent to form an annular groove, the periphery of the panel is provided with a corresponding annular groove, an annular clamping plate with a groove is arranged, the annular groove outer ring on the clamping plate is matched with the annular groove on the face mask cup main body, and the annular groove inner ring welding line of the clamping plate is matched with the annular groove on the panel and is welded together in a sealing manner through ultrasonic hot melting.

The preferred material for the panels is polycarbonate.

Preferably the material of the card is polycarbonate.

The middle part of the panel is respectively provided with a dual-purpose interface, an ambient air valve and an expiration valve which are adjacent in position, and the central points of the dual-purpose interface, the ambient air valve and the expiration valve are preferably distributed in the middle part of the panel in a regular triangle array.

The dual-purpose interface is used for installing a dual-purpose interface connecting piece.

The gas storage bag assembly and the oxygen supply conduit assembly are respectively provided with an oxygen inhalation port, after the oxygen inhalation port is inserted into the dual-purpose interface on the panel, the connecting end of the dual-purpose interface connecting piece is plugged into the oxygen inhalation port through the dual-purpose connecting piece, and the two are closely connected through structural matching, so that the mask cup assembly and the gas storage bag assembly can be connected or the mask cup assembly and the oxygen supply conduit assembly can be connected according to the use requirement, and the oxygen mask is integrated and dual-purpose.

Furthermore, a limit groove is arranged at the edge of the dual-purpose interface, a bulge matched with the limit groove in shape is arranged on the outer side of the edge of the oxygen inhalation port, and the limit groove is matched with the bulge to determine the position and the direction of the assembly of the gas storage bag component and the mask cup component or the position and the direction of the assembly of the oxygen supply conduit component and the mask cup component.

Furthermore, the dual-purpose interface connecting piece is integrally formed by an upper part and a lower part which are different in diameter and thickness, step-shaped connection is formed between the upper part and the lower part, the step-shaped connection position is matched with the dual-purpose interface in a limiting mode, an annular boss is arranged in the middle of the lower portion of the dual-purpose interface connecting piece, a groove structure matched with the annular boss is arranged in the oxygen uptake hole, after the dual-purpose interface connecting piece is plugged into the oxygen uptake hole, the dual-purpose interface connecting piece circumferentially extends around the oxygen uptake hole through the annular boss, interference fit is formed between the oxygen uptake hole and the panel, and therefore sealing and fastening of fluid are achieved.

Preferably, the dual purpose interface connector material is polycarbonate.

The ambient air valve is used for supplementing the outside air when being loaded and opened.

Further, the ambient air shutter is formed by an elastic component positioned in a groove on the panel; the elastic component mainly comprises a spring seat, a spring and a baffle.

The spring seat is provided with a vertical column which is used for limiting the outer ring at the bottom of the spring; preferably, the spring seats are designed with columns arranged in a circular array.

The baffle is used for elastic limiting of the top of the spring; the optimized baffle has the structure that a small circular ring is arranged inside a large circular ring, the two circular rings are connected through three short cross beams which are evenly distributed, and the baffle is formed through integral injection molding.

The spring seat is assembled at the bottom of the groove, the outer ring at the bottom of the spring is assembled on the upright post of the spring seat, the baffle is assembled on the upper edge of the groove and is in contact with the top of the spring, so that the spring is in a compressed state, and the ambient air valve is used for supplementing the outside air when being loaded and opened.

Preferably the material of the spring seat is polycarbonate.

Preferably the material of the baffle is polycarbonate.

The expiration valve is used for discharging expired air generated in the expiration stage of the human body into the external environment air. The preferred breathing valve pore department is equipped with the connecting rod, is equipped with the silica gel valve block behind the connecting rod, and the umbrella form movable valve is constituteed to silica gel valve block and valve rod, and the valve rod passes the aperture on the connecting rod and fixes, and along with the human body exhales, the umbrella form movable valve is opened, and the human body exhales the gas and discharges to the ambient air in.

The gas storage bag assembly is used for connecting a chemical oxygen source; the oxygen supply conduit assembly is used for connecting an oxygen source of a gas cylinder and comprises two groups of different components. The gas storage bag assembly comprises a gas storage bag, a gas storage bag guide pipe and a gas storage bag flow indicator; the oxygen supply catheter assembly includes an oxygen supply catheter and an oxygen supply flow indicator. The gas storage bag conduit and the oxygen supply conduit are the same part and are conduits for conveying oxygen generated by the oxygen source in different components; the gas storage bag flow indicator and the oxygen supply flow indicator are the same parts and are flow indicators which are used for indicating that oxygen generated by the oxygen source flows through the mask in different components; the flow indicator is disposed in the conduit as it is intended to indicate the flow of oxygen therethrough. The only difference between the two components of the gas storage bag component and the oxygen supply conduit component is that the gas storage bag component is provided with one more gas storage bag for storing oxygen continuously generated by the chemical oxygen source.

In the gas storage bag assembly, the oxygen inhalation port is arranged at the top of the gas storage bag and is integrally formed with the gas storage bag; one end of the gas storage bag conduit is connected with a chemical oxygen source; the other end of the gas storage bag conduit is fixedly connected with the bottom of the gas storage bag. Preferably, one end of the gas storage bag conduit is fixedly connected to the bottom of the gas storage bag through high-frequency welding.

In the oxygen supply conduit assembly, one end of the oxygen supply conduit is integrally formed with the oxygen inhalation port, and the other end of the oxygen supply conduit is connected with the oxygen source of the gas cylinder.

Preferably, the gas storage bag is made of a polyvinyl chloride film through high-frequency welding; the high frequency welding forms welding seams with certain width and even distribution in an inclined way on the surface of the gas storage bag, and the welding seams can disperse the axial force leftwards and rightwards along the horizontal direction, so that the mask component can bear the pulling force of at least 88.96N specified in SAE AS 8025.

The flow indicator is a device for measuring oxygen flow in the prior art, and can indicate the flow of at least 0.5LPM-NTPD specified in SAE AS916 (aviation Standard promulgated by the institute of International Automation Engineers, Chinese name "oxygen flow indicator").

Preferably, the flow indicator comprises an upper housing, a lower housing, a flow indicator spring and an indicator. Flow indicator spring and pilot mark assemble between last casing and lower casing, and the pilot mark is arranged in the casing down, and flow indicator spring is arranged in the recess of pilot mark, goes up the casing and seals through ultrasonic bonding with lower casing. When oxygen flows through the air flow indicator, the air flow pushing indicator compresses the flow indicator spring to generate displacement, so that whether oxygen flow is generated or not is judged.

Preferably the material of the conduit is polyvinyl chloride.

Preferably, the material of the upper shell is polycarbonate.

Preferably, the material of the lower shell is polycarbonate.

Preferably the material of the indicator is polypropylene.

Advantageous effects

1. The invention provides an integrated dual-purpose oxygen mask, which has the structure that the mask cup component and a gas storage bag component or the mask cup component and an oxygen supply conduit component can be quickly assembled and disassembled, so that the limitation that the traditional oxygen mask can only be used in a single scene is broken through, when the oxygen mask is assembled with the gas storage bag component, the mask can be used under a chemical oxygen source and has a function similar to a continuous airflow oxygen mask, when the mask is assembled with the oxygen supply conduit component, the mask can be used under the oxygen source of a gas cylinder and has a function similar to a pulse type oxygen mask, and the mask is mainly used for passengers to breathe emergency oxygen when the airplane is decompressed; therefore, the oxygen mask can be used under two different oxygen supply conditions of a chemical oxygen source or a gas cylinder oxygen source, and the effect of integration and dual purposes is achieved; the defect that in the prior art, a continuous airflow oxygen mask for a chemical oxygen source is incompatible with a connector of a pulse type oxygen mask for a gas cylinder oxygen source, so that two oxygen masks are limited to a single oxygen supply condition is overcome.

2. The invention provides an integrated dual-purpose oxygen mask, which is characterized in that an oxygen inhalation port is designed to be used as a common interface of a gas storage bag component and a conduit component, a dual-purpose interface connecting piece is used as a connector, and the assembly and disassembly of a mask cup component and the gas storage bag component or the assembly and disassembly of the mask cup component and an oxygen supply conduit component are conveniently realized through the assembly and disassembly of the dual-purpose interface connecting piece, so that the integrated dual-purpose oxygen mask can be realized.

3. The invention provides an integrated dual-purpose oxygen mask, wherein a gas storage bag component of the oxygen mask can bear the pulling force of at least 88.96N specified in SAE AS8025 through high-frequency welding.

4. The present invention provides an integrated dual-use oxygen mask whose flow indicator can indicate a flow of at least 0.5LPM-NTPD AS specified in SAE AS 916.

Drawings

Fig. 1 is a schematic plan view of an integrated dual-purpose oxygen mask equipped with a gas pouch assembly according to example 1.

Fig. 2 is a cross-sectional view of the mask cup assembly of fig. 1 taken along the direction a-a.

Fig. 3 is a schematic plan view of the panel of embodiment 1.

Figure 4 is a cross-sectional view of the card in example 1 taken along the diameter direction.

Fig. 5 is a schematic structural view of the dual-purpose interface connector of embodiment 1.

Fig. 6 is a schematic structural view of an oxygen inhalation port in embodiment 1.

Fig. 7 is a schematic plan view of a spring seat in embodiment 1.

Fig. 8 is a schematic plan view of the baffle plate in example 1.

FIG. 9 is a schematic plan view of an air bag module in example 1.

Fig. 10 is a schematic plan view of an oxygen supply catheter assembly of example 1.

Fig. 11 is a cross-sectional view of the flow indicator of fig. 9 taken along the direction B-B.

The mask cup comprises a mask cup body 1, a panel 2, a dual-purpose interface connecting piece 3, an ambient air valve 4, an oxygen inhalation port 5, a flow indicator 6, a guide pipe 7, an air storage bag 8, a clamping plate 9, a limiting groove 10, a bulge 11, an annular boss 12, a groove 13, a spring seat 14, a spring 15, a baffle 16, an upper shell 17, a lower shell 18, a flow indicator spring 19, an indication mark 20, and an exhalation valve 21

Detailed Description

The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.

Example 1

An integrated dual use oxygen mask adapted for use by civil aviation passengers, the main components comprising: a mask cup assembly, a gas storage bag assembly and an oxygen supply conduit assembly.

As shown in fig. 1, 2 and 3, the mask cup assembly basically comprises a mask cup body 1, a faceplate 2 and a dual purpose interface connection 3.

The mask cup body 1 is a tapered cup-shaped structure with a narrow opening at one end and a flared opening at the other end; the narrow-mouth end is a connecting end and is used for being connected with the panel 2 in a sealing way; the flared end is an oxygen inhalation end which is used for covering the mouth and the nose of a human body in the oxygen supply process and is used as a terminal of the whole oxygen supply process. The main body 1 of the face cup is made of silica gel cushion material which can be directly contacted with human body and is harmless to human body.

The panel 2 is a plate-shaped structure with the shape matched with the connecting end of the mask cup main body 1.

As shown in fig. 2 and 4, the connecting end bottom of the mask cup main body 1 is bent inwards to form an annular groove, the periphery of the panel 2 is provided with a corresponding annular groove, a circular annular clamping plate 9 with a groove is arranged, the outer ring of the annular groove of the clamping plate 9 is matched with the annular groove on the mask cup main body 1, and the inner ring of the annular groove of the clamping plate 9 is matched with the annular groove on the panel 2 and is welded together by ultrasonic hot melting and sealing.

The material of the panel 2 is polycarbonate.

The material of the card 9 is polycarbonate.

As shown in fig. 3, the middle part of the panel 2 is respectively provided with a dual-purpose interface, an ambient air valve 4 and an exhalation valve 21 which are adjacent in position; the central points of the dual-purpose interface, the ambient air valve 4 and the exhalation valve 21 are arranged in a regular triangle array in the middle of the panel 2.

The dual-purpose interface is used for installing the dual-purpose interface connecting piece 3.

As shown in fig. 1, 6, 9 and 10, the oxygen inhalation port 5 is respectively arranged on the air storage bag component and the oxygen supply conduit component, after the oxygen inhalation port 5 is inserted into the dual-purpose interface on the panel 2, the connecting end of the dual-purpose interface connecting piece 3 is communicated with the dual-purpose connecting port and plugged into the oxygen inhalation port 5, and the two are closely connected through structural matching, so that the mask cup component and the air storage bag component can be connected or the mask cup component and the oxygen supply conduit component can be connected according to the use requirement, and the oxygen mask is integrated and dual-purpose.

As shown in fig. 3, a limiting groove 10 is provided at the edge of the dual-purpose interface, as shown in fig. 6, a protrusion 11 matching with the limiting groove 10 in shape is provided at the outer side of the mouth edge of the oxygen inhalation port 5, and the limiting groove 10 is matched with the protrusion 11 to determine the position and direction of the assembly of the gas storage bag assembly and the mask cup assembly, or the position and direction of the assembly of the oxygen supply conduit assembly and the mask cup assembly.

As shown in fig. 5, the dual-purpose interface connector 3 is integrally formed by an upper part and a lower part with different diameters, the upper part and the lower part are connected in a step-shaped manner, the dual-purpose interface connector is matched and limited with the dual-purpose interface at the position of the step-shaped connection, an annular boss 12 is arranged in the middle of the lower part of the dual-purpose interface connector 3, a groove structure matched with the annular boss 12 is arranged in the oxygen inhalation port 5, after the dual-purpose interface connector 3 is plugged into the oxygen inhalation port 5, the dual-purpose interface connector 3 circumferentially extends around the oxygen inhalation port 5 through the annular boss 12, and interference fit is formed between the oxygen inhalation port 5 and the panel 2, so that sealing and fastening of fluid are realized.

The dual purpose interface connector 3 is made of polycarbonate.

As shown in fig. 2 and 3, the ambient air shutter 4 is constituted by a resilient member located in a recess 13 of the panel 2; the resilient member mainly includes a spring seat 14, a spring 15, and a stopper 16.

As shown in fig. 7, the spring seat 14 is designed with pillars arranged in a regular circular array as a limit for the bottom outer ring of the spring 15.

The baffle 16 structure is equipped with a little ring for a big ring is inside, connects through evenly distributed's three short crossbeam between two rings and forms, and whole injection moulding forms for the elasticity at spring 15 top is spacing.

The spring seat 14 is assembled at the bottom of the groove 13, the outer ring at the bottom of the spring 15 is assembled on a column of the spring seat 14, the baffle 16 is assembled on the upper edge of the groove 13 and is contacted with the top of the spring 15, so that the spring 15 is in a compressed state, and the ambient air valve 4 is used for supplementing the outside air when being loaded and opened.

The material of the spring seat 14 and the baffle 16 is polycarbonate.

The exhalation valve 21 is used to discharge exhaled air generated during the exhalation phase of the human body into the external ambient air. Expiration valve 21 department is equipped with the silica gel valve block, through spliced pole and 2 swing joint of panel, and gas exhales from the valve block gap during expiration.

The exhalation valve 21 is used to discharge exhaled air generated during the exhalation phase of the human body into the external ambient air. The pore canal of the expiration valve 21 is provided with a connecting rod, a silica gel valve block is arranged behind the connecting rod, the silica gel valve block and the valve rod form an umbrella-shaped movable valve, the valve rod penetrates through a small hole on the connecting rod to be fixed, the umbrella-shaped movable valve is opened along with the expiration of a human body, and the exhaled air of the human body is discharged to the outside air.

The gas storage bag assembly is used for connecting a chemical oxygen source; the oxygen supply conduit assembly is used for connecting an oxygen source of a gas cylinder and comprises two groups of different components. The gas storage bag assembly comprises a gas storage bag 8, a gas storage bag conduit and a gas storage bag flow indicator; the oxygen supply catheter assembly includes an oxygen supply catheter and an oxygen supply flow indicator. The gas storage bag conduit and the oxygen supply conduit are the same part and are both conduits 7 which are used for conveying oxygen generated by the oxygen source in different components; the gas storage bag flow indicator and the oxygen supply flow indicator are the same part and are flow indicators 6 which are used for indicating that oxygen generated by the oxygen source flows through the mask in different components; since the flow indicator 6 is to indicate the flow of oxygen therethrough, the flow indicator 6 is provided in the conduit 7. The only difference between the two components of the gas storage bag component and the oxygen supply catheter component is that the gas storage bag component is additionally provided with a gas storage bag 8 for storing oxygen continuously generated by the chemical oxygen source.

In the gas storage bag component 5, the oxygen inhalation port is arranged at the top of the gas storage bag and is integrally formed with the gas storage bag; one end of the gas storage bag conduit is connected with a chemical oxygen source; one end of the gas storage bag conduit is fixedly connected to the bottom of the gas storage bag 8 through high frequency welding.

The gas storage bag 8 is made of a polyvinyl chloride film through high-frequency welding; the high frequency welding forms a wide and evenly distributed inclined weld on the surface of the gas storage bag 8, and the welds can disperse the axial force to the left and the right along the horizontal direction, so that the mask assembly can bear the pulling force of at least 88.96N specified in SAE AS 8025.

The flow indicator 6 is a device for measuring oxygen flow in the prior art, and can indicate a flow of at least 0.5LPM-NTPD specified in SAE AS916 (aviation Standard promulgated by the society of International automotive Engineers, Chinese name "oxygen flow indicator").

The flow indicator 6 comprises an upper housing 17, a lower housing 18, a flow indicator spring 19 and an indicator sign 20. A flow indicator spring 19 and an indicator 20 are assembled between the upper case 17 and the lower case 18, the indicator 20 is placed in the lower case 18, the flow indicator spring 19 is placed in a groove of the indicator 20, and the upper case 17 and the lower case 18 are sealed by ultrasonic welding. When oxygen flows through the indicator, the indicator 20 is pushed by the air flow to compress the indicator spring 19 to displace, thereby determining whether oxygen flow is generated.

The material of the conduit is polyvinyl chloride.

The material of the upper case 17 and the lower case 18 is polycarbonate.

The material of the indicator 20 is polypropylene.

5 oxygen masks described in this embodiment were assembled, and the oxygen masks were subjected to a strength test according to the strength test procedure specified in SAE AS8025, section 6.1.4, and after applying 88.96N static load to the oxygen masks for 3s, no breakage of the mask components and no detachment of the mask interfaces were observed, and the oxygen masks achieved the strength requirements specified in SAE AS 8025.

The upper housing 17 and the lower housing 18 of the flow indicator 6 are welded by ultrasonic sealing. After the welding is completed, 0.5LPM-NTPD oxygen is introduced from the end of the conduit 7, and the indicator 20 is observed to push the flow indicator spring 19 to displace, thereby judging that oxygen flows through the oxygen mask, and proving that the flow indicator 6 achieves the effect specified in SAE AS 916.

This embodiment assembly mode can make face guard cup subassembly and gas storage bag subassembly, or face guard cup subassembly and oxygen suppliment conduit subassembly realize rapid Assembly and dismantlement, has broken through the restriction that oxygen mask can only use under single scene in the past to realize that oxygen mask can use under the condition of chemical oxygen source or gas cylinder oxygen source, reach integrative dual-purpose effect.

In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrative dual-purpose formula oxygen mask, oxygen mask is applicable to civilian aviation passenger and uses its characterized in that: the main components of the oxygen mask comprise a mask cup component, a gas storage bag component and an oxygen supply conduit component;

the mask cup assembly mainly comprises a mask cup main body (1), a panel (2) and a dual-purpose interface connecting piece (3);

one end of the mask cup body (1) is a connecting end, and the other end is an oxygen inhalation end;

the panel (2) is of a plate-shaped structure, the shape of which is matched with the connecting end of the mask cup main body (1), and the periphery of the panel (2) is hermetically connected with the connecting end of the mask cup main body (1); the middle part of the panel (2) is respectively provided with a dual-purpose interface, an ambient air valve (4) and an exhalation valve (21) which are adjacent in position;

the gas storage bag assembly and the oxygen supply conduit assembly are respectively provided with an oxygen inhalation port (5), when the oxygen inhalation port (5) is inserted into the dual-purpose interface on the panel (2), the connecting end of the dual-purpose interface connecting piece (3) is plugged into the oxygen inhalation port (5) through the dual-purpose connecting port, and the two are tightly connected through structural matching, so that the mask cup assembly and the gas storage bag assembly or the mask cup assembly and the oxygen supply conduit assembly can be connected according to the use requirement;

the gas storage bag assembly is connected with a chemical oxygen source, and the oxygen supply conduit assembly is connected with an oxygen source of a gas cylinder; the gas storage bag assembly comprises a gas storage bag (8), a gas storage bag conduit and a gas storage bag flow indicator; the oxygen supply conduit component comprises an oxygen supply conduit and an oxygen supply flow indicator; the gas storage bag conduit and the oxygen supply conduit are both conduits (7), the gas storage bag flow indicator and the oxygen supply flow indicator are both flow indicators (6), and the flow indicators (6) are arranged in the conduits (7).

2. The integrated dual-purpose oxygen mask of claim 1, wherein: the mask cup main body (1) is in a tapered cup-shaped structure, one end of the mask cup main body is a narrow opening, the other end of the mask cup main body is a flared opening, one end of the narrow opening is a connecting end, and the other end of the flared opening is an oxygen absorbing end;

the environmental air valve (4) is composed of an elastic component positioned in a groove (13) on the panel (2); the elastic component mainly comprises a spring seat (14), a spring (15) and a baffle plate (16); the spring seat (14) is assembled at the bottom of the groove (13), the outer ring at the bottom of the spring (15) is assembled on the upright post of the spring seat (14), and the baffle (16) is assembled on the groove (13) and contacts with the top of the spring (15) along the edge, so that the spring (15) is in a compressed state;

a connecting rod is arranged at the pore passage of the exhalation valve (21), a silica gel valve block is arranged behind the connecting rod, the silica gel valve block and the valve rod form an umbrella-shaped movable valve, and the valve rod penetrates through a small hole on the connecting rod to be fixed;

in the gas storage bag assembly, an oxygen inhalation port (5) is arranged at the top of a gas storage bag (8) and is integrally formed with the gas storage bag (8), one end of a gas storage bag conduit is connected with a chemical oxygen source, and the other end of the gas storage bag conduit is fixedly connected to the bottom of the gas storage bag (8); in the oxygen supply conduit assembly, one end of the oxygen supply conduit is integrally formed with the oxygen inhalation port (5), and the other end is connected with the oxygen source of the gas cylinder.

3. An integrated dual use oxygen mask as claimed in claim 1 or 2, wherein: the inside buckling in link bottom of face guard cup main part (1) forms annular groove, panel (2) periphery is equipped with the ring channel that corresponds, set up ring shape cardboard (9) of taking the recess, cooperate through the annular groove outer lane on cardboard (9) and the annular groove on face guard cup main part (1), the annular groove inner circle weld line of cardboard (9) cooperatees with the ring channel on panel (2), be in the same place through ultrasonic wave hot melt sealing welding.

4. An integrated dual use oxygen mask as claimed in claim 1 or 2, wherein: the central points of the dual-purpose interface, the ambient air valve (4) and the exhalation valve (21) are arranged in a regular triangle array in the middle of the panel (2).

5. An integrated dual use oxygen mask as claimed in claim 1 or 2, wherein: the edge of the dual-purpose interface is provided with a limit groove (10), the outer side of the edge of the oxygen inhalation port (5) is provided with a bulge (11) matched with the limit groove (10) in shape, and the limit groove (10) is matched with the bulge (11).

6. An integrated dual use oxygen mask as claimed in claim 1 or 2, wherein: dual-purpose interface connection spare (3) comprises the upper and lower two parts an organic whole of the different thickness of diameter, forms step-like connection between the upper and lower part, through step-like junction is spacing with dual-purpose interface cooperation, and the lower part middle part of dual-purpose interface connection spare (3) is equipped with annular boss (12), oxygen uptake mouth (5) inside be equipped with annular boss (12) matched with groove structure, fill in oxygen uptake mouth (5) back with dual-purpose interface connection spare (3), make dual-purpose interface connection spare (3) extend around oxygen uptake mouth (5) circumference on the circumferencial direction through annular boss (12), form interference fit between oxygen uptake mouth (5) and panel (2).

7. The integrated dual-purpose oxygen mask of claim 2, wherein: upright posts arranged in a regular circular array are designed on the spring seat (14); the baffle (16) is structurally characterized in that a small circular ring is arranged inside a large circular ring, the two circular rings are connected through three short cross beams which are evenly distributed, and the whole body is formed by injection molding.

8. An integrated dual use oxygen mask as claimed in claim 1 or 2, wherein: the flow indicator (6) comprises an upper shell (17), a lower shell (18), a flow indicator spring (19) and an indication mark (20); a flow indicator spring (19) and an indicator (20) are assembled between an upper housing (17) and a lower housing (18), the indicator (20) is placed in the lower housing (18), the flow indicator spring (19) is placed in a groove of the indicator (20), and the upper housing (17) and the lower housing (18) are sealed by ultrasonic welding.

9. The integrated dual-purpose oxygen mask of claim 2, wherein: the bottom of the connecting end of the mask cup main body (1) is bent inwards to form an annular groove, the periphery of the panel (2) is provided with a corresponding annular groove, an annular clamping plate (9) with a groove is arranged, the outer ring of the annular groove on the clamping plate (9) is matched with the annular groove on the mask cup main body (1), and the inner ring welding line of the annular groove of the clamping plate (9) is matched with the annular groove on the panel (2) and welded together in a sealing manner through ultrasonic hot melting;

the central points of the dual-purpose interface, the ambient air valve (4) and the exhalation valve (21) are arranged in a regular triangle array in the middle of the panel (2);

a limit groove (10) is arranged at the edge of the dual-purpose interface, a bulge (11) matched with the limit groove (10) in shape is arranged on the outer side of the edge of the oxygen inhalation port (5), and the limit groove (10) is matched with the bulge (11);

the dual-purpose interface connecting piece (3) is integrally formed by an upper part and a lower part which have different diameters, the upper part and the lower part are connected in a step shape, the upper part and the lower part are matched and limited with the dual-purpose interface through the step-shaped connection part, the middle part of the lower part of the dual-purpose interface connecting piece (3) is provided with an annular boss (12), a groove structure matched with the annular boss (12) is arranged inside the oxygen inhalation port (5), after the dual-purpose interface connecting piece (3) is plugged into the oxygen inhalation port (5), the dual-purpose interface connecting piece (3) circumferentially extends around the oxygen inhalation port (5) through the annular boss (12), and interference fit is formed between the oxygen inhalation port (5) and the panel (2);

upright posts arranged in a regular circular array are designed on the spring seat (14); the baffle (16) is structurally characterized in that a small circular ring is arranged in a large circular ring, the two circular rings are connected through three short cross beams which are evenly distributed, and the baffle is formed by integral injection molding;

the flow indicator (6) comprises an upper shell (17), a lower shell (18), a flow indicator spring (19) and an indication mark (20); a flow indicator spring (19) and an indicating mark (20) are assembled between the upper shell (17) and the lower shell (18), the indicating mark (20) is arranged in the lower shell (18), the flow indicator spring (19) is arranged in a groove of the indicating mark (20), and the upper shell (17) and the lower shell (18) are sealed through ultrasonic welding; a flow indicator (6) indicates a flow of at least 0.5LPM-NTPD specified in SAE AS 916;

one end of the gas storage bag conduit is fixedly connected to the bottom of the gas storage bag (8) through high-frequency welding;

the gas storage bag (8) is made of a polyvinyl chloride film through high-frequency welding.

10. The integrated dual-purpose oxygen mask of claim 9, wherein: the mask cup main body (1) is made of a silica gel cushion or polymethylvinyl siloxane;

the panel (2), the dual-purpose interface connecting piece (3), the clamping plate (9), the spring seat (14), the baffle (16), the upper shell (17) and the lower shell (18) are made of polycarbonate;

the material of the conduit (7) is polyvinyl chloride;

the material of the indicator (20) is polypropylene.