A parachuting oxygen supply system

Abstract

The present invention discloses a parachuting oxygen supply system, comprising an oxygen supply mask, an oxygen flow regulator, and an oxygen supply pipeline; the oxygen supply mask is provided with an inhalation one-way valve; one end of the oxygen supply pipeline is connected to the inhalation one-way valve of the oxygen supply mask, and the other end is used to connect to an oxygen cylinder; the oxygen supply pipeline is provided with an onboard oxygen supply pipe conversion valve, an oxygen flow indicator, and an oxygen storage device; the oxygen flow regulator is provided on the oxygen supply pipeline; the oxygen flow regulator comprises a base, a first air inlet cavity, a first air outlet cavity, and a rotating member rotatably mounted in the base; the rotating member is provided with at least four mating areas arranged circumferentially around the rotating axis of the rotating member. The present invention has the functions of pre-storing oxygen, indicating oxygen flow status, and regulating oxygen flow, thereby improving safety in use. Moreover, the oxygen flow regulation gear value can be increased, thereby meeting more usage requirements.

Description

Technical Field

[0001] The present invention relates to the field of oxygen supply systems, in particular to a parachuting oxygen supply system. Background Art

[0002] In order to ensure adequate oxygen supply, skydiving at altitudes of 15,000 feet and above often requires oxygen supply through a skydiving oxygen supply system. The existing skydiving oxygen supply system includes an oxygen mask and an oxygen pipeline; one end of the oxygen pipeline is connected to the inhalation one-way valve of the oxygen mask, and the other end is used to connect to the oxygen cylinder. However, the existing oxygen pipeline only has the function of supplying oxygen circulation, and does not have the function of pre-storing oxygen, the function of indicating the oxygen flow status, and the function of regulating oxygen flow, which seriously affects its safety in use and imposes great limitations on its use. Although with the continuous advancement of technology, improved skydiving oxygen supply systems have emerged in the industry. The improved skydiving oxygen supply system is achieved by providing an oxygen flow regulator on the oxygen pipeline to regulate the oxygen flow with the help of the oxygen flow regulator. However, due to its structural limitations, the existing oxygen flow regulator generally only has three oxygen flow adjustment gear values: fully open, half open, and closed, which still imposes great limitations on its use. Summary of the Invention

[0003] In order to overcome the shortcomings of the existing technology, the purpose of the present invention is to provide a parachuting oxygen supply system, which has a pre-stored oxygen function, an oxygen flow status indication function, and an oxygen flow adjustment function, which can improve the safety of use. Moreover, the adjustment gear value of the oxygen flow can be increased, thereby meeting more usage needs and improving the flexibility of use.

[0004] The purpose of the present invention is achieved by the following technical solutions:

[0005] A parachuting oxygen supply system, comprising an oxygen supply mask, an oxygen flow regulator for adjusting the oxygen flow, and an oxygen pipeline; the oxygen supply mask is provided with an inhalation one-way valve; one end of the oxygen pipeline is connected to the inhalation one-way valve of the oxygen supply mask, and the other end is used to connect to an oxygen cylinder; the oxygen pipeline is provided with an onboard oxygen supply pipe switching valve, an oxygen flow indicator for indicating the oxygen flow state, and an oxygen storage device for pre-stored oxygen; the oxygen flow regulator is provided on the oxygen pipeline and divides the oxygen pipeline into a first pipe section and a second pipe section; the oxygen flow regulator comprises a base, a first air inlet cavity formed on the base and connected to the first pipe section, a first air inlet cavity formed on the base and connected to the second pipe section An air outlet cavity, and a rotating member rotatably mounted in the base; the rotating member is provided with at least four matching areas arranged in a circle around the rotation axis of the rotating member, one of which is provided with a blocking portion for blocking the first air inlet cavity when the matching area is facing the first air inlet cavity, and the remaining matching areas are provided with connecting channels, which are used to communicate with the first air inlet cavity when the matching area where they are located is facing the first air inlet cavity; the sizes of the connecting channels of each matching area are different; the rotating member is also provided with a transition channel, which is respectively connected to the first air outlet cavity and each connecting channel; the base is also provided with a positioning device for positioning the rotating member when any matching area is facing the first air inlet cavity.

[0006] The oxygen supply mask is also provided with an exhalation valve and a one-way inlet valve for ambient air.

[0007] The rotating member has a rotating cover, and the positioning device includes a mounting cavity provided on the base, a ball movably installed in the mounting cavity, and a first elastic element; the first elastic element is installed in the mounting cavity and is used to provide an elastic force that urges the ball to move toward the rotating cover; the rotating cover is provided with at least four locking holes that are arranged circumferentially around the rotation axis of the rotating member and correspond one-to-one to the at least four matching areas; when any matching area is opposite to the first air inlet cavity, the ball is embedded in the corresponding locking hole.

[0008] The rotating member also includes a valve core fixed on the rotary cover and extending into the base, and the connecting channel and the transition channel are both formed on the valve core; the base is provided with a base portion, and the first air outlet cavity, close to the end of the rotating member, passes through the central portion of the upper surface of the base portion and forms an air outlet, and the first air inlet cavity, close to the end of the rotating member, passes through the upper surface of the base portion and forms an air inlet, the valve core is located above the base portion and abuts against the upper surface of the base portion, the connecting channel passes through the lower surface of the valve core and forms a connecting port for communicating with the air inlet, and the upper surface of the base portion forms a covering abutment surface for covering the connecting port.

[0009] The onboard oxygen supply pipe conversion valve is arranged on the first pipe section, and the first pipe section is divided into a first front sub-pipe section and a first rear sub-pipe section; the first rear sub-pipe section is connected between the onboard oxygen supply pipe conversion valve and the oxygen flow regulator; the onboard oxygen supply pipe conversion valve includes a valve housing, a second air outlet cavity formed on the valve housing and communicated with the first rear sub-pipe section, a second air inlet cavity formed on the valve housing and communicated with the first front sub-pipe section, a third air inlet cavity formed on the valve housing, a second elastic element, and a movable air core; the valve housing is provided with a first communicating hole, a second communicating hole, and a communicating chamber communicated with the second air outlet cavity, the first communicating hole is used to connect the second air inlet cavity and the connecting hole through chamber; the second communicating hole is used to connect the third air inlet chamber and the communicating chamber; the movable air core is movably installed in the communicating chamber and can move between a first closed position and a second closed position relative to the valve shell; when the movable air core is in the first closed position, the movable air core blocks the first communicating hole, and the communicating chamber is connected with the third air inlet chamber through the second communicating hole; when the movable air core is in the second closed position, the movable air core blocks the second communicating hole, and the communicating chamber is connected with the second air inlet chamber through the first communicating hole; the second elastic element is installed between the valve shell and the movable air core, and is used to provide an elastic force that urges the movable air core to move toward the second closed position.

[0010] The first communicating hole is in the shape of a truncated cone; the aperture of the first communicating hole gradually decreases from one end of the first communicating hole close to the second communicating hole to the end away from the second communicating hole; the movable air core is provided with a first truncated cone sealing body for sealing the first communicating hole; the second communicating hole is in the shape of a truncated cone; the aperture of the second communicating hole gradually decreases from one end of the second communicating hole close to the first communicating hole to the end away from the first communicating hole; the movable air core is provided with a second truncated cone sealing body for sealing the second communicating hole.

[0011] The movable air core is provided with a pressure-bearing rod which passes through the third air inlet cavity.

[0012] The oxygen flow indicator includes an observation housing, an active cavity disposed within the observation housing, an air outlet passage disposed on the observation housing and communicating with the active cavity, an air inlet passage disposed on the observation housing and used to communicate with the active cavity, an indicator seat movably mounted within the active cavity and used to cover the air inlet passage to seal the air inlet passage, and a third elastic element; the third elastic element abuts between the indicator seat and the observation housing and is used to provide an elastic force that urges the indicator seat to move toward the air inlet passage; the indicator housing includes a transparent tube, and the active cavity is formed within the transparent tube.

[0013] The onboard oxygen supply pipe conversion valve, oxygen flow regulator, oxygen flow indicator and oxygen storage device are sequentially arranged on the oxygen supply pipe in a direction close to the oxygen supply mask.

[0014] The oxygen storage device is provided with a filter.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention provides a parachuting oxygen supply system, which has an oxygen flow regulator, an onboard oxygen supply pipe conversion valve, an oxygen flow indicator, and an oxygen storage device on the oxygen pipeline, so as to have a pre-stored oxygen function, an oxygen flow state indication function, and an oxygen flow regulation function, thereby improving the safety of use and facilitating use. In addition, the oxygen flow regulator is formed by combining a base, a rotating member, and a positioning device, and at least four matching areas are formed on the rotating member. When in use, by rotating the rotating member, each matching area can be rotated with the rotating member to face the air intake channel, so that each connecting channel can be utilized. Or the blocking portion cooperates with the first air inlet cavity, and by utilizing the blocking portion, or different communicating channels cooperating with the first air inlet cavity, different circulating oxygen amounts can be switched to form at least four oxygen flow adjustment gear values, which can increase the adjustment gear values of the oxygen flow, thereby meeting more usage requirements and improving the flexibility of use; in addition, by reasonably setting the onboard oxygen supply pipe conversion valve, it is helpful to switch the oxygen supply source conveniently and quickly; by reasonably setting the oxygen flow indicator, the movement of the indicator seat can also be used to facilitate the judgment of the oxygen flow state, with direct visibility and real-time performance, and convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of the parachuting oxygen supply system of the present invention;

[0018] Figure 2 Schematic diagram of the structure of the oxygen flow regulator;

[0019] Figure 3 This is an exploded view of the oxygen flow regulator;

[0020] Figure 4 It is a structural diagram of the rotating part;

[0021] Figure 5 This is a schematic diagram of the structure of the onboard oxygen supply pipe conversion valve;

[0022] Figure 6 This is an exploded view of the onboard oxygen supply pipe switching valve;

[0023] Figure 7 Schematic diagram of the structure of the oxygen flow indicator;

[0024] Figure 8 is an exploded schematic diagram of an oxygen flow indicator;

[0025] 100. Oxygen flow regulator; 110. Base; 111. First air inlet cavity; 112. First air outlet cavity; 113. Air outlet; 114. Air inlet; 115. Covering abutment surface; 116. Annular groove; 117. Main seat; 118. First air inlet nozzle; 119. Second air outlet nozzle; 120. Rotating member; 121. Fitting area; 122. Blocking portion; 123. Connecting channel; 124. Transition channel; 125. Rotary cap; 126. Locking hole; 127. Valve core; 128. Surrounding wall; 130, positioning device; 131, mounting cavity; 132, ball bearing; 133, first elastic element; 141, base portion; 200, onboard oxygen supply pipe switching valve; 210, valve housing; 211, second outlet cavity; 212, second inlet cavity; 213, third inlet cavity; 214, first connecting hole; 215, second connecting hole; 216, connecting chamber; 217, mounting groove; 221, main housing; 222, second outlet nozzle; 223, second inlet nozzle; 224, third inlet cavity Nozzle; 230, movable air core; 231, first truncated cone blocking body; 232, second truncated cone blocking body; 233, outer boss; 234, pressure rod; 241, first sealing ring; 242, second sealing ring; 250, second elastic element; 300, oxygen flow indicator; 310, observation shell; 311, movable cavity; 312, air outlet channel; 313, air inlet channel; 321, third air outlet nozzle; 322, first sealing sleeve; 323, fourth air inlet nozzle; 324, inner boss; 3 25. Second sealing sleeve; 326. Transparent tube; 330. Indicator seat; 331. Ventilation gap; 340. Third elastic element; 400. Oxygen reservoir; 500. Oxygen pipeline; 510. First pipe section; 511. First front sub-pipe section; 512. First rear sub-pipe section; 520. Second pipe section; 521. Second front sub-pipe section; 522. Second rear sub-pipe section; 600. Oxygen supply mask; 610. Inhalation one-way valve; 620. Ambient air one-way inlet valve; 630. Exhalation valve. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] like Figure 1-8As shown, a parachuting oxygen supply system includes an oxygen supply mask 600, an oxygen flow regulator 100 for adjusting the oxygen flow, and an oxygen supply line 500; the oxygen supply mask 600 is provided with an inhalation check valve 610; one end of the oxygen supply line 500 is connected to the inhalation check valve 610 of the oxygen supply mask 600, and the other end is used to connect to an oxygen cylinder; the oxygen supply line 500 is provided with an onboard oxygen supply pipe switching valve 200 and an oxygen indicator for indicating the oxygen flow state. The oxygen flow regulator 100 is provided on the oxygen pipe 500, and the oxygen flow regulator 100 is provided on the oxygen pipe 500, and the oxygen pipe 500 is divided into a first pipe section 510 and a second pipe section 520. The oxygen flow regulator 100 includes a base 110, a first air inlet cavity 111 formed on the base 110 and communicating with the first pipe section 510, and a first air outlet cavity 112 formed on the base 110 and communicating with the second pipe section 520. , and a rotating member 120 rotatably mounted in the base 110; the rotating member 120 is provided with at least four matching areas 121 arranged circumferentially around the rotation axis of the rotating member 120, wherein one matching area 121 is provided with a blocking portion 122 for blocking the first air inlet cavity 111 when the matching area 121 is facing the first air inlet cavity 111, and the remaining matching areas 121 are all provided with a connecting channel 123, which is used to connect the matching area 121 with the connecting channel 123. When the first air inlet cavity 111 is facing the first air inlet cavity 111, the first air inlet cavity 111 is connected to the first air inlet cavity 111; the connecting passages 123 of each matching area 121 have different sizes; the rotating member 120 is also provided with a transition channel 124, which is connected to the first air outlet cavity 112 and each connecting passage 123 respectively; the base 110 is also equipped with a positioning device 130 for positioning the rotating member 120 when any matching area 121 is facing the first air inlet cavity 111. Specifically, the onboard oxygen supply pipe switching valve 200, oxygen flow regulator 100, oxygen flow indicator 300, and oxygen reservoir 400 are sequentially arranged on the oxygen supply pipe 500 in a direction close to the oxygen supply mask 600.

[0028] During use, the oxygen supply line 500 can be connected to an oxygen cylinder. When the user inhales, oxygen from the oxygen cylinder can flow through the oxygen supply line 500 to the inhalation check valve 610 of the oxygen supply mask 600, and then flow into the oxygen supply mask 600 in a single direction through the inhalation check valve 610 to supply oxygen to the user. Since the oxygen supply line 500 is provided with an onboard oxygen supply line switching valve 200, an oxygen flow indicator 300, an oxygen reservoir 400, and an oxygen flow regulator 100, the oxygen flow regulator 100 can adjust the oxygen flow, the oxygen flow indicator 300 can display the oxygen flow status, the oxygen reservoir 400 can pre-store oxygen, and the onboard oxygen supply line switching valve 200 can facilitate switching of the oxygen supply source. Therefore, the oxygen supply line 500 has the functions of pre-storing oxygen, indicating the oxygen flow status, and regulating the oxygen flow, thereby improving safety and facilitating use. Furthermore, during use, if the mating region 121 provided with the blocking portion 122 is rotated to face the first air inlet chamber 111, and the rotatable member 120 is positioned using the positioning device 130, the blocking portion 122 blocks the first air inlet chamber 111, thereby preventing oxygen in the first pipe section 510 from flowing from the first air inlet chamber 111 to the first air outlet chamber 112. Consequently, the oxygen flow rate is zero. If the mating region 121 provided with the connecting passage 123 is rotated to face the first air inlet chamber 111, and the rotatable member 120 is positioned using the positioning device 130, the connecting passage 123 of the mating region 121 facing the first air inlet chamber 111 communicates with the first air inlet chamber 111. Oxygen can enter the connecting passage 123 from the first pipe section 510 and the first air inlet chamber 111, and then flow out of the first air outlet chamber 112 through the transition passage 124 and into the second pipe section 520. Since the sizes of the connecting channels 123 of each matching area 121 are different (that is, the sizes are all different), the amount of oxygen supplied to the connecting channels 123 of each matching area 121 per unit time is different. That is, the larger the connecting channel 123 is, the greater the amount of oxygen supplied when it is connected to the first air inlet chamber 111, and the smaller the connecting channel 123 is, the smaller the amount of oxygen supplied when it is connected to the first air inlet chamber 111. Therefore, by utilizing the blocking portion 122 or different connecting channels 123 to cooperate with the first air inlet chamber 111, different oxygen flow amount values can be switched to. In this way, at least four oxygen flow adjustment gear values can be formed, and the oxygen flow adjustment gear values can be increased, thereby meeting more different oxygen supply requirements and meeting more usage requirements.

[0029] The inhalation one-way valve 610 on the oxygen supply mask 600 can be any one of the existing inhalation one-way valves on the market, as long as it allows oxygen to enter the oxygen mask in one direction when the user inhales and closes when the user exhales.

[0030] The oxygen mask 600 is also provided with an ambient air one-way inlet valve 620. The ambient air one-way inlet valve 620 on the oxygen mask 600 is used to allow ambient air to enter and mix with the oxygen when the user inhales, thereby preventing asphyxiation when the oxygen cylinder runs out of oxygen. The ambient air one-way inlet valve 620 on the oxygen mask 600 can be any commercially available one-way inlet valve 620, as long as it allows ambient air to enter when the user inhales.

[0031] The oxygen mask 600 is also provided with an exhalation valve 630, so that when the user exhales, the exhaled carbon dioxide can be discharged through the exhalation valve 630. The exhalation valve 630 on the oxygen mask 600 can be any existing exhalation valve on the market, as long as it is opened when exhaling and closed when inhaling.

[0032] The oxygen supply mask 600 also has a communication module (such as a communication microphone, etc.) to facilitate communication.

[0033] The oxygen supply mask 600 includes a support portion made of PC material and a contact portion provided on the support portion and used for contacting the face. The contact portion is made of soft silicone to ensure good sealing with the face and improve wearing comfort.

[0034] The oxygen supply mask 600 is provided with a fixing belt to be fixedly worn on the head through the fixing belt. The oxygen supply mask 600 is connected to the helmet through an adjustment belt, can match various helmets, and is convenient to adjust.

[0035] The rotating member 120 has a rotary cover 125. The positioning device 130 includes a mounting cavity 131 provided on the base 110, a ball 132 movably mounted in the mounting cavity 131, and a first elastic element 133. The first elastic element 133 is mounted in the mounting cavity 131 and is used to provide an elastic force that urges the ball 132 to move toward the rotary cover 125. The rotary cover 125 is provided with at least four locking holes 126 arranged circumferentially around the rotation axis of the rotating member 120 and corresponding to the at least four mating areas 121. When any mating area 121 is aligned with the first air inlet cavity 111, the ball 132 is inserted into the corresponding locking hole 126. During use, when the rotating member 120 is rotated into position so that the corresponding mating area 121 is aligned with the first air inlet cavity 111, the ball 132 is inserted into the corresponding locking hole 126 under the elastic force of the first elastic element 133, thereby positioning the rotating member 120. By adopting the above-mentioned structure for the positioning device 130, it is easy to install, and since the ball 132 enters the locking hole 126 under the elastic force of the first elastic element 133, it collides with the locking hole 126 and makes a sound, which can also serve as a reminder.

[0036] In this embodiment, the number of the matching areas 121 and the locking holes 126 is eight, forming eight oxygen flow adjustment gear values, namely 0, 1, 2, 3, 4, 5, 6, and 12 lpm of oxygen flow, respectively. This allows for a stable oxygen flow output, thereby meeting various oxygen supply needs. Of course, the number of the matching areas 121 and the locking holes 126 can also be increased based on actual needs.

[0037] In this embodiment, the number of the positioning devices 130 is set to two to improve the stability of the positioning of the rotating member 120. Of course, the number of the positioning devices 130 can be set to one or more than two according to actual needs.

[0038] The first elastic element 133 is a first spring, one end of which abuts against the wall of the mounting cavity 131 and the other end abuts against the ball 132. Alternatively, the first elastic element 133 may be a spring, or other suitable material, as long as it provides a suitable elastic force. However, using a first spring as the first elastic element 133 is the most preferred embodiment of the present invention, reducing costs and facilitating installation.

[0039] The rotating member 120 further includes a valve core 127 fixed on the rotary cover 125 and extending into the base 110 . The communication channel 123 and the transition channel 124 are both formed on the valve core 127 , thereby facilitating processing and manufacturing.

[0040] The base 110 is further provided with an annular groove 116, the central axis of which coincides with the rotation axis of the rotating member 120; the rotary cover 125 is provided with a surrounding wall 128 that is movably embedded in the annular groove 116, and the cooperation between the annular groove 116 and the surrounding wall 128 can guide the rotation of the rotating member 120.

[0041] Specifically, the base 110 is provided with a base portion 141, the first air outlet cavity 112, one end of which is close to the rotating part 120, passes through the central portion of the upper surface of the base portion 141 and forms an air outlet 113, the first air inlet cavity 111, one end of which is close to the rotating part 120, passes through the upper surface of the base portion 141 and forms an air inlet 114, the valve core 127 is located above the base portion 141 and abuts against the upper surface of the base portion 141, the connecting channel 123 passes through the lower surface of the valve core 127 and forms a connecting port for connecting with the air inlet 114, and the upper surface of the base portion 141 forms a covering abutment surface 115 for covering the connecting port. When the matching area 121 provided with the connecting channel 123 rotates with the rotating part 120 to face the first air inlet chamber 111, the connecting port of the connecting channel 123 of the matching area 121 is connected with the air inlet 114. When the matching area 121 rotates with the rotating part 120 to be offset from the first air inlet chamber 111, the connecting port of the connecting channel 123 of the matching area 121 can be covered by the upper surface of the base portion 141 to prevent oxygen from flowing out through the connecting port of the connecting channel 123.

[0042] Specifically, the transition channel 124 passes through the center of the lower surface of the valve core 127 and communicates with the air outlet 113. The blocking portion 122 is a blocking surface for blocking the first air inlet cavity 111. The blocking surface is located on the bottom of the valve core 127.

[0043] The base 110 includes a main body 117, a first air inlet nozzle 118 disposed at one end of the main body 117, and a first air outlet nozzle 119 disposed at the other end of the main body 117; the first air inlet cavity 111 extends from the first air inlet nozzle 118 to the main body 117, and the first air outlet cavity 112 extends from the first air outlet nozzle 119 to the main body 117. The first air inlet nozzle 118 and the first air outlet nozzle 119 are both threadedly connected to the main body 117. The above structure facilitates the assembly and disassembly of the first air inlet nozzle 118 and the first air outlet nozzle 119. Specifically, the base portion 141 is formed on the main body 117. The first air inlet nozzle 118 is threadedly connected to the first pipe section 510, and the first air outlet nozzle 119 is threadedly connected to the second pipe section 520.

[0044] An air inlet sealing ring is provided between the main seat body 117 and the first air inlet nozzle 118 , and an air outlet sealing ring is provided between the main seat body 117 and the first air outlet nozzle 119 , thereby improving the sealing effect.

[0045] The onboard oxygen supply pipe switching valve 200 is arranged on a first pipe section 510, and the first pipe section 510 is divided into a first front sub-pipe section 511 and a first rear sub-pipe section 512; the first rear sub-pipe section 512 is connected between the onboard oxygen supply pipe switching valve 200 and the oxygen flow regulator 100; the onboard oxygen supply pipe switching valve 200 includes a valve housing 210, a second air outlet cavity 211 formed on the valve housing 210, a second air inlet cavity 212 formed on the valve housing 210, a third air inlet cavity 213 formed on the valve housing 210, a second elastic element 250, and a movable air core 230; the valve housing 210 is provided with a first communicating hole 214, a second communicating hole 215, and a communicating chamber 216 communicating with the second air outlet cavity 211, wherein the first communicating hole 214 is used to connect the second air inlet cavity 212 and the communicating chamber 216; The second connecting hole 215 is used to connect the third air inlet chamber 213 and the connecting chamber 216; the movable air core 230 is movably installed in the connecting chamber 216 and can move between a first closed position and a second closed position relative to the valve housing 210; when the movable air core 230 is in the first closed position, the movable air core 230 blocks the first connecting hole 214, and the connecting chamber 216 is connected to the third air inlet chamber 213 through the second connecting hole 215; when the movable air core 230 is in the second closed position, the movable air core 230 blocks the second connecting hole 215, and the connecting chamber 216 is connected to the second air inlet chamber 212 through the first connecting hole 214; the second elastic element 250 is installed between the valve housing 210 and the movable air core 230, and is used to provide an elastic force that urges the movable air core 230 to move toward the second closed position. In normal use, the first front sub-tube section 511 is connected to the oxygen cylinder, and the movable gas core 230 moves toward the second closed position and remains in the second closed position under the elastic force of the second elastic element 250. The movable gas core 230 blocks the second connecting hole 215, and the first connecting hole 214 is in an open state. The connecting chamber 216 is connected to the second air inlet chamber 212 through the first connecting hole 214. The oxygen in the oxygen cylinder can flow into the connecting chamber 216 through the first front sub-tube section 511, the second air inlet chamber 212, and the first connecting hole 214, and flow from the second air outlet chamber 211 to the first rear sub-tube section 512 through the connecting chamber 216.When the air source needs to be switched, the onboard oxygen supply connection end of the onboard oxygen supply system can be connected to the onboard oxygen supply pipe switching valve 200, and the onboard oxygen supply connection end can be used to apply thrust to the movable air core 230 to move the movable air core 230 to the first closed position and connect with the third air inlet chamber 213. At this time, the movable air core 230 blocks the first communicating hole 214, the second communicating hole 215 is in an open state, and the communicating chamber 216 is connected with the third air inlet chamber 213 through the second communicating hole 215. The oxygen of the onboard oxygen supply system can flow into the communicating chamber 216 through the third air inlet chamber 213 and the second communicating hole 215, and flow from the second air outlet chamber 211 to the first rear air outlet chamber 213 through the communicating chamber 216. Sub-pipe segment 512, and when the onboard oxygen supply connection end is unplugged, the pushing force on the movable gas core 230 is removed, and the movable gas core 230 is reset to the second closed position under the elastic force of the second elastic element 250. Therefore, by reasonably setting the structure of the onboard oxygen supply pipe conversion valve 200, the second air inlet chamber 212 or the third air inlet chamber 213 can be selectively connected to the second air outlet chamber 211 with the help of the movement of the movable gas core 230, so that air can be supplied to the second air outlet chamber 211 and the first rear sub-pipe segment 512 through the second air inlet chamber 212 or the third air inlet chamber 213, so that the oxygen supply source (oxygen cylinder or onboard oxygen supply system) can be switched conveniently and quickly. Specifically, the first front sub-pipe segment 511 is provided with a connection joint for connecting to the oxygen cylinder.

[0046] The first connecting hole 214 is in a truncated cone shape; the aperture of the first connecting hole 214 gradually decreases from the end of the first connecting hole 214 close to the second connecting hole 215 to the end away from the second connecting hole 215; the movable air core 230 is provided with a first truncated cone sealing body 231 for sealing the first connecting hole 214, and by adopting the above structure, the sealing effect of the movable air core 230 on the first connecting hole 214 can be improved.

[0047] A first sealing ring 241 is fixed on the movable air core 230 for sealing with the wall of the first communicating hole 214 , thereby improving the sealing effect between the movable air core 230 and the wall of the first communicating hole 214 when the first communicating hole 214 is blocked to avoid air leakage.

[0048] The second connecting hole 215 is in a truncated cone shape; the aperture of the second connecting hole 215 gradually decreases from the end of the second connecting hole 215 close to the first connecting hole 214 to the end away from the first connecting hole 214; the movable air core 230 is provided with a second truncated cone sealing body 232 for sealing the second connecting hole 215, and by adopting the above structure, the sealing effect of the movable air core 230 on the second connecting hole 215 can be improved.

[0049] A second sealing ring 242 is fixed on the movable air core 230 for sealing with the wall of the second communicating hole 215, thereby improving the sealing effect between the movable air core 230 and the wall of the second communicating hole 215 when blocking the second communicating hole 215 to avoid air leakage.

[0050] The movable air core 230 is further provided with an outwardly projecting outer boss 233 positioned between the first and second truncated cone blocking bodies 231 and 232. A mounting groove 217 is formed on the inner wall of the communicating chamber 216 at one end near the first communicating hole 214. One end of the second elastic element 250 abuts against the outer boss 233, while the other end abuts against the wall of the mounting groove 217. This structure facilitates the installation of the second elastic element 250 and improves its stability.

[0051] The second elastic element 250 is a second spring. Of course, in addition to this, the second elastic element 250 can also adopt an elastic strip, etc., as long as the corresponding elastic force can be increased, but the second elastic element 250 adopts a second spring, which is the best embodiment of the present invention and is convenient for installation.

[0052] The movable air core 230 is provided with a pressure-bearing rod 234 passing through the third air inlet cavity 213, so that the onboard oxygen supply connection end presses against the pressure-bearing rod 234 to apply thrust to the movable air core 230 to move the movable air core 230 to the first closed position.

[0053] The valve housing 210 includes a main housing 221, a second air outlet nozzle 222 fixed to the main housing 221, a second air inlet nozzle 223 fixed to the main housing 221, and a third air inlet nozzle 224 fixed to the main housing 221. The second air outlet cavity 211 extends from the second air outlet nozzle 222 to the main housing 221, the second air inlet cavity 212 extends from the second air inlet nozzle 223 to the main housing 221, and the third air inlet cavity 213 is provided on the third air inlet nozzle 224. The connecting chamber 216 is surrounded by the main housing 221 and the third air inlet nozzle 224. The first connecting hole 214 is provided on the main housing 221, and the second connecting hole 215 is provided on the third air inlet nozzle 224. The above structure facilitates the processing and manufacturing of the valve housing 210.

[0054] In this embodiment, the second air inlet nozzle 223, the third air inlet nozzle 224, and the second air outlet nozzle 222 are all threadedly connected to the main housing 221, thereby facilitating assembly and disassembly of the second air inlet nozzle 223, the third air inlet nozzle 224, and the second air outlet nozzle 222. Seals are provided between the second air inlet nozzle 223, the third air inlet nozzle 224, and the second air outlet nozzle 222 and the main housing 221 to enhance the sealing effect. The second air inlet nozzle 223 is threadedly connected to the first front sub-pipe section 511, the second air outlet nozzle 222 is threadedly connected to the first rear sub-pipe section 512, and the third air inlet nozzle 224 is used to connect to the oxygen supply connection end of the onboard oxygen supply system.

[0055] The oxygen flow indicator 300 includes an observation housing 310, an active cavity 311 disposed within the observation housing 310, an air outlet channel 312 disposed on the observation housing 310 and communicating with the active cavity 311, an air inlet channel 313 disposed on the observation housing 310 and communicating with the active cavity 311, an indicator seat 330 movably mounted within the active cavity 311 and configured to cover and seal the air inlet channel 313, and a third elastic element 340. The third elastic element 340 abuts between the indicator seat 330 and the observation housing 310 and provides an elastic force that urges the indicator seat 330 to move toward the air inlet channel 313. The observation housing 310 includes a transparent tube 326, and the active cavity 311 is formed within the transparent tube 326. During use, if gas enters the air inlet channel 313 through the oxygen passage 500 and applies a force to the indicator seat 330, the indicator seat 330 overcomes the elastic force of the third elastic element 340 under the action of the gas and moves away from the air inlet channel 313. At this time, the gas can enter the active cavity 311 through the air inlet channel 313 and flow toward the air outlet channel 312. The movement and position change of the indicator seat 330 indicate that there is gas flow at this time. If no gas is flowing from the air inlet passage 313, the indicator seat 330 remains in its initial position covering the air inlet passage 313 due to the elastic force of the third elastic element 340. At this time, the absence of gas flow can be easily detected by the indicator seat 330 being in its initial position. Therefore, the oxygen flow indicator 300, by combining the observation housing 310, the indicator seat 330, and the third elastic element 340, can facilitate determination of the oxygen flow state during use through the indicator seat 330. Furthermore, the movement and position of the indicator seat 330 can be observed from outside the observation housing 310, providing direct visibility and real-time performance, making it convenient for use.

[0056] The observation housing 310 also includes a third air outlet nozzle 321 fixed to one end of a transparent tube 326. The air outlet channel 312 is formed on the third air outlet nozzle 321, thereby facilitating the manufacture and formation of the air outlet channel 312. The observation housing 310 also includes a first sealing sleeve 322 that is mounted on the third air outlet nozzle 321 and the transparent tube 326 to improve sealing performance.

[0057] The observation housing 310 also includes a fourth air inlet nozzle 323 fixed to the other end of the transparent tube 326. The air inlet channel 313 is formed on the fourth air inlet nozzle 323, thereby facilitating the manufacture and formation of the air inlet channel 313. The observation housing 310 also includes a second sealing sleeve 325 that fits over the fourth air inlet nozzle 323 and the transparent tube 326 to improve sealing performance.

[0058] The fourth air inlet nozzle 323 is provided with an inner boss 324 extending into the active cavity 311. The end of the inner boss 324 near the air outlet channel 312 is used for abutment by the indicator seat 330. The air inlet channel 313 extends through the end surface of the inner boss 324 near the air outlet channel 312. This structure allows the indicator seat 330 to move toward the air inlet channel 313 and abut against the inner boss 324 under the elastic force of the third elastic element 340, thereby improving the stability of the indicator seat 330 in covering the air inlet channel 313.

[0059] A ventilation gap 331 is formed between the indicator base 330 and the inner wall of the active cavity 311. The indicator base 330 includes a sleeve. One end of the third elastic element 340 abuts against the observation housing 310, while the other end extends into and abuts against the sleeve. This structure of the indicator base 330 facilitates its interaction with the third elastic element 340, simplifies its structure, and facilitates processing and manufacturing.

[0060] The third elastic element 340 is a third spring. Specifically, one end of the third spring abuts against the third air outlet nozzle 321, and the other end abuts against the sleeve. The third air outlet nozzle 321 is provided with a mounting post located within the active cavity 311 and adapted to accommodate the third spring, thereby facilitating installation of the third spring.

[0061] Of course, in addition to the third spring, the third elastic element 340 can also adopt an elastic sheet, etc., as long as it provides the corresponding elastic force. However, using the third spring as the third elastic element 340 is the optimal embodiment of the present invention. It can provide the corresponding elastic force while reducing costs and facilitating installation.

[0062] The oxygen flow indicator 300 is disposed on the second pipe section 520, which is divided into a second pre-segment 521 and a second post-segment 522. The second pre-segment 521 is connected between the oxygen flow regulator 100 and the oxygen flow indicator 300, while the second post-segment 522 is connected between the oxygen flow indicator 300 and the inhalation check valve 610 of the oxygen supply mask 600. The inlet channel 313 is in communication with the second pre-segment 521, and the outlet channel 312 is in communication with the second post-segment 522. Specifically, the third outlet nozzle 321 is threadedly connected to the second post-segment 522, and the fourth inlet nozzle 323 is threadedly connected to the second pre-segment 521.

[0063] The oxygen reservoir 400 on the oxygen mask 600 is used to ensure sufficient oxygen supply during the user's inhalation and to store oxygen during the exhalation phase, preserving oxygen for the next breath. The oxygen reservoir 400 on the oxygen mask 600 can be any commercially available oxygen reservoir, as long as it can perform its functions. The oxygen reservoir 400 is disposed on the second rear sub-tube segment 522.

[0064] As a further preferred embodiment of the present invention, a filter is provided on the oxygen storage device 400 to perform a filtering function.

[0065] As one of the preferred embodiments of the present invention, the oxygen pipeline 500 can also be connected to an auxiliary oxygen supply tube, which is used to connect a single-person oxygen system and a pre-inhalation oxygen cylinder. When the single-person oxygen system is connected to the auxiliary oxygen supply tube, the pre-inhalation oxygen cylinder will automatically supply oxygen to the parachutist, and will not consume the oxygen of the single-person oxygen system; when the auxiliary oxygen supply tube is disconnected from the single-person oxygen system, the single-person oxygen system will automatically supply oxygen to the user.

[0066] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A parachuting oxygen supply system, characterized by: The invention comprises an oxygen supply mask, an oxygen flow regulator for adjusting the oxygen flow, and an oxygen pipeline; the oxygen supply mask is provided with an inhalation one-way valve; one end of the oxygen pipeline is connected to the inhalation one-way valve of the oxygen supply mask, and the other end is used to connect to the oxygen cylinder; the oxygen pipeline is provided with an onboard oxygen supply pipe switching valve, an oxygen flow indicator for indicating the oxygen flow state, and an oxygen storage device for pre-stored oxygen; the oxygen flow regulator is provided on the oxygen pipeline and divides the oxygen pipeline into a first pipe section and a second pipe section; the oxygen flow regulator comprises a base, a first air inlet cavity formed on the base and connected to the first pipe section , a first air outlet cavity formed on the base and connected to the second pipe section, and a rotating member rotatably mounted in the base; the rotating member is provided with at least four matching areas arranged circumferentially around the rotation axis of the rotating member, one of which is provided with a blocking portion for blocking the first air inlet cavity when the matching area is facing the first air inlet cavity, and the remaining matching areas are all provided with connecting channels, which are used to connect with the first air inlet cavity when the matching area is located facing the first air inlet cavity; the sizes of the connecting channels of each matching area are different; the rotating member is also provided with a transition channel, which is respectively connected to the first air outlet cavity and each connecting channel The base is also provided with a positioning device for positioning the rotating member when any matching area is facing the first air inlet cavity; the rotating member has a rotary cover, and the positioning device includes a mounting cavity provided on the base, a ball movably installed in the mounting cavity, and a first elastic element; the first elastic element is installed in the mounting cavity and is used to provide an elastic force that urges the ball to move toward the rotating cover; the rotary cover is provided with at least four locking holes arranged in a circle around the rotation axis of the rotating member and corresponding to the at least four matching areas respectively; when any matching area is facing the first air inlet cavity, the ball is embedded in the corresponding lock hole The cam is an airtight container which is provided with a valve core which is fixed on the rotary cover and extends into the base, and the connecting channel and the transition channel are both formed on the valve core; the base is provided with a base portion, and the first air outlet cavity is close to the end of the rotating member and passes through the central portion of the upper surface of the base portion and forms an air outlet, and the first air inlet cavity is close to the end of the rotating member and passes through the upper surface of the base portion and forms an air inlet, the valve core is located above the base portion and abuts against the upper surface of the base portion, the connecting channel passes through the lower surface of the valve core and forms a connecting port for communicating with the air inlet, and the upper surface of the base portion forms a covering abutment surface for covering the connecting port.

2. The parachuting oxygen supply system according to claim 1, wherein: The oxygen supply mask is also provided with an exhalation valve and a one-way inlet valve for ambient air.

3. The parachuting oxygen supply system according to claim 1, wherein: The onboard oxygen supply pipe conversion valve is arranged on the first pipe section, and the first pipe section is divided into a first front sub-pipe section and a first rear sub-pipe section; the first rear sub-pipe section is connected between the onboard oxygen supply pipe conversion valve and the oxygen flow regulator; the onboard oxygen supply pipe conversion valve includes a valve housing, a second air outlet cavity formed on the valve housing and communicated with the first rear sub-pipe section, a second air inlet cavity formed on the valve housing and communicated with the first front sub-pipe section, a third air inlet cavity formed on the valve housing, a second elastic element, and a movable air core; the valve housing is provided with a first communicating hole, a second communicating hole, and a communicating chamber communicated with the second air outlet cavity, the first communicating hole is used to connect the second air inlet cavity and the connecting hole through chamber; the second communicating hole is used to connect the third air inlet chamber and the communicating chamber; the movable air core is movably installed in the communicating chamber and can move between a first closed position and a second closed position relative to the valve shell; when the movable air core is in the first closed position, the movable air core blocks the first communicating hole, and the communicating chamber is connected with the third air inlet chamber through the second communicating hole; when the movable air core is in the second closed position, the movable air core blocks the second communicating hole, and the communicating chamber is connected with the second air inlet chamber through the first communicating hole; the second elastic element is installed between the valve shell and the movable air core, and is used to provide an elastic force that urges the movable air core to move toward the second closed position.

4. The parachuting oxygen supply system according to claim 3, wherein: The first communicating hole is in the shape of a truncated cone; the aperture of the first communicating hole gradually decreases from one end of the first communicating hole close to the second communicating hole to the end away from the second communicating hole; the movable air core is provided with a first truncated cone sealing body for sealing the first communicating hole; the second communicating hole is in the shape of a truncated cone; the aperture of the second communicating hole gradually decreases from one end of the second communicating hole close to the first communicating hole to the end away from the first communicating hole; the movable air core is provided with a second truncated cone sealing body for sealing the second communicating hole.

5. The parachuting oxygen supply system according to claim 3, wherein: The movable air core is provided with a pressure-bearing rod which passes through the third air inlet cavity.

6. The parachuting oxygen supply system according to claim 1, wherein: The oxygen flow indicator includes an observation housing, an active cavity disposed within the observation housing, an air outlet channel disposed on the observation housing and communicating with the active cavity, an air inlet channel disposed on the observation housing and used to communicate with the active cavity, an indicator seat movably mounted within the active cavity and used to cover the air inlet channel to close the air inlet channel, and a third elastic element; the third elastic element abuts between the indicator seat and the observation housing and is used to provide an elastic force that urges the indicator seat to move toward the air inlet channel; the observation housing includes a transparent tube, and the active cavity is formed within the transparent tube.

7. The parachuting oxygen supply system according to claim 1, wherein: The onboard oxygen supply pipe conversion valve, oxygen flow regulator, oxygen flow indicator and oxygen storage device are sequentially arranged on the oxygen supply pipe in a direction close to the oxygen supply mask.

8. The parachuting oxygen supply system according to claim 1, wherein: The oxygen storage device is provided with a filter.

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