A portable oxygen concentrator suitable for plateau environment

Abstract

The present invention belongs to the technical field of portable oxygen concentrators, and in particular, relates to a portable oxygen concentrator suitable for plateau environments, including a portable oxygen concentrator body, a gas guide seat is fixedly provided on the upper side of the portable oxygen concentrator body, and the gas guide seat is connected to the exhaust port of the portable oxygen concentrator body, a plurality of oxygen guide tubes are fixedly connected to the gas guide seat, and each oxygen guide tube is commonly connected to a multi-head gas guide tube, the lower side of the oxygen guide tube is a frustum-shaped design, and the oxygen guide tube is narrow at the bottom and wide at the top, and an opening self-adjusting mechanism is provided in the oxygen guide tube. Compared with traditional portable oxygen concentrators, the present invention can automatically adjust the size of the oxygen outlet port according to the different altitudes during use in plateau areas, so that tourists can better breathe oxygen. At the same time, when the lithium battery is exhausted, the standby battery board can be automatically switched to intervene to ensure the normal oxygen supply of the equipment during the replacement of the lithium battery.

Description

Technical Field

[0001] The invention belongs to the technical field of portable oxygen concentrators, and in particular relates to a portable oxygen concentrator suitable for plateau environments. Background Art

[0002] Nowadays, when people travel on the Qinghai-Tibet Plateau, the air on the Qinghai-Tibet Plateau is relatively thin, especially the low oxygen content, which can easily cause tourists to suffer from hypoxia. In order to alleviate this phenomenon, tourists often carry oxygen concentrators with them at all times to replenish oxygen. Portable oxygen concentrators are often people's first choice. Portable oxygen concentrators are relatively small in size and easy to carry.

[0003] At present, when people travel with portable oxygen concentrators, as the altitude of the travel location changes, the corresponding oxygen content in the air will change accordingly. For example, as the altitude continues to rise, the corresponding oxygen will decrease. At this time, since the traditional portable oxygen concentrators cannot automatically adjust the oxygen output, people often need to breathe the oxygen delivered by the oxygen tube hard or manually adjust the size of the oxygen outlet opening to obtain more oxygen. However, the above method is time-consuming and labor-intensive. In addition, since the portable oxygen concentrator often needs to be stopped for replacement when replacing the lithium battery, the shutdown and replacement takes a certain amount of time. At this time, since the portable oxygen concentrator no longer works to produce oxygen, in some areas of the plateau where oxygen deficiency is severe, it is difficult for people to ensure continuous supply, and there are certain safety hazards.

[0004] To this end, we propose a portable oxygen concentrator suitable for plateau environments to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a portable oxygen concentrator suitable for plateau environments in view of the above problems.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a portable oxygen concentrator suitable for plateau environment, comprising a portable oxygen concentrator body, a gas guide seat is fixedly arranged on the upper side of the portable oxygen concentrator body, and the gas guide seat is connected to the exhaust port of the portable oxygen concentrator body, a plurality of oxygen guide tubes are fixedly connected to the gas guide seat, and each oxygen guide tube is commonly connected to a multi-head gas guide tube, the lower side of the oxygen guide tube is designed in a frustum shape, and the oxygen guide tube is designed to be narrow at the bottom and wide at the top, an opening self-adjusting mechanism is arranged in the oxygen guide tube, and one side of the gas guide seat is provided with a A detection and control mechanism cooperates with each opening self-adjusting mechanism, a battery cavity is opened on the lower side of the portable oxygen concentrator body, and a lithium battery is arranged in the battery cavity, a cover plate is threadedly connected to the battery cavity, a buffer seat is fixedly connected to one side of the portable oxygen concentrator body, and a spare battery storage board is arranged in the buffer seat, a plurality of elastic hemispherical layers are fixedly connected to one side of the buffer seat, and a power replenishment mechanism cooperating with the spare battery storage board is arranged between the elastic hemispherical layer and the buffer seat, and a self-switching switch cooperating with the lithium battery and the spare battery storage board is arranged in the gas guide seat.

[0007] In the above-mentioned portable oxygen concentrator suitable for plateau environment, the opening self-adjusting mechanism is composed of a telescopic rod and a sealing ball. The telescopic rod is fixedly arranged in the oxygen guide tube, and the lower end of the telescopic rod is fixedly connected to the sealing ball.

[0008] In the above-mentioned portable oxygen concentrator suitable for plateau environment, the telescopic rod is composed of a sub-rod, a mother rod, an electromagnetic block and a permanent magnet block. A fixed rod is fixedly connected in the oxygen guide tube, and the mother rod is fixedly arranged on the fixed rod. The sub-rod is slidably connected to the mother rod through the permanent magnet block, and the lower end of the sub-rod is fixedly connected to the sealing ball. The electromagnetic block is embedded in the mother rod, and the electromagnetic block is fixedly connected to the permanent magnet block through a telescopic spring.

[0009] In the above-mentioned portable oxygen concentrator suitable for plateau environment, the detection control mechanism is composed of a detection box and a positive humidity sensitive resistor. The detection box is fixedly arranged on the air guide seat, and the positive humidity sensitive resistor is fixedly arranged in the detection box. A vent is opened on the detection box, and a dustproof net is arranged on the vent. The positive humidity sensitive resistor is connected in series with each electromagnetic block.

[0010] In the above-mentioned portable oxygen concentrator suitable for plateau environment, the power compensation mechanism is composed of a guide rod, a ceramic piezoelectric sheet and a pressure block. The guide rod is fixedly arranged in the elastic hemispherical layer, and the buffer seat is provided with a sliding opening that matches the guide rod. The ceramic piezoelectric sheet is embedded in the sliding opening. The pressure block is fixedly arranged on the guide rod, and the pressure block is squeezed with the ceramic piezoelectric sheet. The ceramic piezoelectric sheet is electrically connected to the standby battery plate.

[0011] In the above-mentioned portable oxygen concentrator suitable for plateau environment, the self-switching switch is composed of a switch box, an electromagnetic plate, a permanent magnet plate, a conductive block, a first conductive sheet and a second conductive sheet. The switch box is fixedly arranged in the gas guide seat, the electromagnetic plate is embedded in the switch box, and the electromagnetic plate is fixedly connected to the permanent magnet plate through a reset spring, the permanent magnet plate is slidably connected to the switch box, and the conductive block is fixedly arranged on the permanent magnet plate, the first conductive sheet and the second conductive sheet are both embedded in the inner bottom surface of the lower end of the switch box, and the first conductive sheet is in contact with the conductive block, the conductive block is electrically connected to the portable oxygen concentrator body and each electromagnetic block, the first conductive sheet is electrically connected to the lithium battery, and the second conductive sheet is electrically connected to the standby storage board.

[0012] In the above-mentioned portable oxygen concentrator suitable for plateau environment, a battery replacement sound and light indicator is provided on the main body of the portable oxygen concentrator, and the battery replacement sound and light indicator is electrically connected to the second conductive sheet.

[0013] In the above-mentioned portable oxygen concentrator suitable for plateau environment, a time relay is arranged on the main body of the portable oxygen concentrator, and the time relay is electrically connected to the battery replacement sound and light prompter.

[0014] Compared with the existing technology, the beneficial effects of the present invention are: through the detection and control mechanism set up, the corresponding resistance value change can be generated according to the change of the plateau altitude, and then the power of the opening self-adjusting mechanism can be automatically controlled, so that the telescopic rod in the opening self-adjusting mechanism can automatically control the position of the blocking ball according to the change of the plateau altitude, and realize the self-regulation of the oxygen outlet of the oxygen tube, so that people can better absorb oxygen. The whole regulation process does not require manual operation, which greatly facilitates the usability of the equipment. Through the set self-switching switch, the standby battery board can be automatically switched to power supply after the lithium battery is used up, so as to ensure the continuous oxygen supply of the equipment, avoid oxygen supply interruption, and ensure the personal safety of tourists. Through the cooperation of the buffer seat set up and the elastic hemispherical layers thereon, the elastic deformation of the elastic hemispherical layer can be used to buffer the collision between the equipment and the human body during carrying. At the same time, a part of the elastic deformation mechanical energy can be converted into electrical energy through the power replenishment mechanism to supplement a part of the electrical energy for the standby battery board, which can save energy and increase the service life of the standby battery board.

[0015] In summary: through the design of the present invention, compared with traditional portable oxygen concentrators, when used in plateau areas, the size of the oxygen outlet port can be automatically adjusted according to the different altitudes, so that tourists can better breathe oxygen. At the same time, when the lithium battery is exhausted, the backup battery board can be automatically switched to ensure the normal oxygen supply of the equipment during the lithium battery replacement process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a front perspective structural schematic diagram of a portable oxygen concentrator suitable for plateau environments provided by the present invention;

[0017] Figure 2 It is a front perspective structural schematic diagram of an oxygen conduit of a portable oxygen concentrator suitable for plateau environments provided by the present invention;

[0018] Figure 3 It is a front perspective structural schematic diagram of a telescopic rod of a portable oxygen concentrator suitable for plateau environments provided by the present invention;

[0019] Figure 4 It is a front perspective structural schematic diagram of a detection and control mechanism of a portable oxygen concentrator suitable for plateau environments provided by the present invention;

[0020] Figure 5 It is a front perspective structural schematic diagram of a self-switching switch of a portable oxygen concentrator suitable for plateau environments provided by the present invention;

[0021] Figure 6 It is a front perspective structural schematic diagram of the elastic hemispherical layer and the buffer seat of a portable oxygen concentrator suitable for plateau environment provided by the present invention cooperating with each other;

[0022] Figure 7 The present invention provides a schematic structural diagram of the cooperation between a battery chamber and a lithium battery of a portable oxygen concentrator suitable for plateau environments.

[0023] In the figure: 1 portable oxygen concentrator body, 2 air guide seat, 3 oxygen guide tube, 4 multi-head air guide tube, 5 opening self-adjusting mechanism, 51 telescopic rod, 511 sub-rod, 512 mother rod, 513 electromagnetic block, 514 permanent magnet block, 52 blocking ball, 6 detection control mechanism, 61 detection box, 62 positive humidity sensitive resistor, 7 battery cavity, 8 lithium battery, 9 cover plate, 10 buffer seat, 11 spare storage board, 12 elastic hemispherical layer, 13 power replenishing mechanism, 131 guide rod, 132 ceramic piezoelectric sheet, 133 pressure block, 14 self-switching switch, 141 switch box, 142 electromagnetic plate, 143 permanent magnet plate, 144 conductive block, 145 first conductive sheet, 146 second conductive sheet, 15 fixed rod, 16 telescopic spring, 17 vent, 18 dust net, 19 slide, 20 reset spring, 21 battery replacement sound and light prompter, 22 time relay, 23 shoulder strap. DETAILED DESCRIPTION

[0024] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0025] like Figure 1-7As shown, a portable oxygen concentrator suitable for plateau environment includes a portable oxygen concentrator body 1. The interior of the portable oxygen concentrator body 1 is mainly composed of an air compressor and a porous zeolite mineral layer. The air compressor absorbs air from the atmosphere and compresses the air, and then allows the compressed air to pass through the porous zeolite mineral layer. The zeolite mineral layer absorbs a large amount of nitrogen from the air, and the remaining oxygen-rich gas is guided to the oxygen storage chamber and combined with the oxygen delivery tube to be absorbed by the human body for use. This is a prior art and will not be described in detail here.

[0026] An air guide seat 2 is fixedly provided on the upper side of the portable oxygen concentrator body 1, and the air guide seat 2 is connected to the exhaust port of the portable oxygen concentrator body 1. A plurality of oxygen guide tubes 3 are fixedly connected to the air guide seat 2, and each oxygen guide tube 3 is commonly connected to a multi-head air guide tube 4. The lower side of the oxygen guide tube 3 is designed in a frustum shape, and the oxygen guide tube 3 is designed to be narrow at the bottom and wide at the top. An opening self-adjusting mechanism 5 is provided in the oxygen guide tube 3, and the opening self-adjusting mechanism 5 is composed of a telescopic rod 51 and a blocking ball 52. The telescopic rod 51 is fixedly provided in the oxygen guide tube 3, and the lower end of the telescopic rod 51 is fixedly connected to the blocking ball 52. The blocking ball 52 can be controlled to move up and down by the telescopic rod 51, so as to change the position of the blocking ball 52, thereby changing the distance between the blocking ball 52 and the inner wall of the oxygen guide tube 3, thereby To change the size of the oxygen outlet, the telescopic rod 51 is composed of a sub-rod 511, a mother rod 512, an electromagnetic block 513 and a permanent magnet block 514. The oxygen guide tube 3 is fixedly connected with a fixed rod 15, and the mother rod 512 is fixedly arranged on the fixed rod 15. The sub-rod 511 is slidably connected to the mother rod 512 through the permanent magnet block 514, and the lower end of the sub-rod 511 is fixedly connected to the blocking ball 52. The electromagnetic block 513 is embedded in the mother rod 512, and the electromagnetic block 513 is fixedly connected to the permanent magnet block 514 through the telescopic spring 16. Through the set electromagnetic block 513, the size of the current passed through the electromagnetic block 513 can be used to change its own magnetic size. In conjunction with the permanent magnet block 514 and the telescopic spring 16, the blocking ball 52 can be automatically controlled to move up and down;

[0027] A detection control mechanism 6 matched with each opening self-adjusting mechanism 5 is arranged on one side of the air guide seat 2. The detection control mechanism 6 consists of a detection box 61 and a positive humidity sensitive resistor 62. The detection box 61 is fixedly arranged on the air guide seat 2, and the positive humidity sensitive resistor 62 is fixedly arranged in the detection box 61. A vent 17 is opened on the detection box 61, and a dustproof net 18 is arranged on the vent 17. The positive humidity sensitive resistor 62 is connected in series with each electromagnetic block 513. Through the set positive humidity sensitive resistor 62, the humidity change caused by the change of altitude during the tourists' travel can be automatically changed to control the current passed into the telescopic rod 51, so as to realize the self-regulation of the position of the blocking ball 52, and then automatically regulate the size of the oxygen outlet space of the oxygen guide tube 3. The setting of the dustproof net 18 can prevent the entry of external dust;

[0028] A battery cavity 7 is provided at the lower side of the main body 1 of the portable oxygen concentrator, and a lithium battery 8 is arranged in the battery cavity 7, a cover plate 9 is threadedly connected to the battery cavity 7, a buffer seat 10 is fixedly connected to one side of the main body 1 of the portable oxygen concentrator, and a spare storage board 11 is arranged in the buffer seat 10, a plurality of elastic hemispherical layers 12 are fixedly connected to one side of the buffer seat 10, and a power replenishment mechanism 13 cooperating with the spare storage board 11 is arranged between the elastic hemispherical layer 12 and the buffer seat 10, the power replenishment mechanism 13 is composed of a guide rod 131, a ceramic piezoelectric sheet 132 and a pressure block 133, the guide rod 131 is fixedly arranged in the elastic hemispherical layer 12, and a buffer seat 10 is provided with a plurality of elastic hemispherical layers 12, and a plurality of elastic hemispherical layers 12 are fixedly connected to the buffer seat 10 ... The sliding opening 19, the ceramic piezoelectric sheet 132 is embedded in the sliding opening 19, the pressing block 133 is fixedly arranged on the guide rod 131, and the pressing block 133 is pressed against the ceramic piezoelectric sheet 132, and the ceramic piezoelectric sheet 132 is electrically connected to the standby storage board 11. Through the cooperation of the set guide rod 131 and the pressing block 133, the pressing block 133 can be continuously moved to press the ceramic piezoelectric sheet 132 to generate electric energy as the elastic hemispherical layer 12 is deformed, so as to supplement a certain amount of electric energy for the standby storage board 11. During the process of supplementing electricity, a voltage stabilizer can be arranged in the buffer seat 10 to regulate the electric energy generated by the ceramic piezoelectric sheet 132 to form a stable current to supplement the electric energy for the standby storage board 11.

[0029] The gas guide seat 2 is provided with a self-switching switch 14 that cooperates with the lithium battery 8 and the backup power storage board 11. The self-switching switch 14 is composed of a switch box 141, an electromagnetic plate 142, a permanent magnet plate 143, a conductive block 144, a first conductive sheet 145 and a second conductive sheet 146. The switch box 141 is fixedly arranged in the gas guide seat 2, and the electromagnetic plate 142 is embedded in the switch box 141. The electromagnetic plate 142 is fixedly connected to the permanent magnet plate 143 through a reset spring 20. The permanent magnet plate 143 is connected to the switch box. 141 is slidably connected, and the conductive block 144 is fixedly arranged on the permanent magnetic plate 143, the first conductive sheet 145 and the second conductive sheet 146 are both embedded in the inner bottom surface of the lower end of the switch box 141, and the first conductive sheet 145 is in contact with the conductive block 144, the conductive block 144 is electrically connected to the portable oxygen concentrator body 1 and each electromagnetic block 513, the first conductive sheet 145 is electrically connected to the lithium battery 8, and the second conductive sheet 146 is electrically connected to the standby storage board 11, through the electromagnetic plate set 142, the magnetic change of the electromagnetic plate 142 when it is turned on and off can be used to cooperate with the permanent magnet plate 143 and the reset spring 20 to automatically adjust the position of the conductive block 144, and then automatically adjust the conductive block 144 to connect with the first conductive sheet 145 or the second conductive sheet 146 to realize automatic replacement of the power supply. A power-changing sound and light prompter 21 is provided on the portable oxygen concentrator body 1, and the power-changing sound and light prompter 21 is electrically connected to the second conductive sheet 146. Through the power-changing sound and light prompter 21, it can be automatically started after the standby battery board 11 intervenes, and prompts the user to replace the lithium battery 8, so that the user knows that the lithium battery 8 is exhausted and the standby battery board 11 intervenes to prompt the user to replace the lithium battery 8. A time relay 22 is provided on the portable oxygen concentrator body 1, and the time relay 22 is electrically connected to the power-changing sound and light prompter 21. The setting of the time relay 22 can control the working time of the power-changing sound and light prompter 21 to avoid wasting electricity by the power-changing sound and light prompter 21 working for a long time.

[0030] The operating principle of the present invention is now described as follows:

[0031] When using the device, the joint of the oxygen supply tube is connected to the output end of the multi-head airway tube 4, and then the air outlet end of the oxygen supply tube is placed in the nasal cavity. Then, the device is hung on the shoulder of the user through the shoulder strap 23 on the portable oxygen concentrator body 1, and each elastic hemispherical layer 12 on one side of the portable oxygen concentrator body 1 is in contact with the human body. Initially, the lithium battery 8 will power the portable oxygen concentrator body 1, and the portable oxygen concentrator body 1 will suck in the outside air and remove the nitrogen in the air, leaving the oxygen-rich gas to be guided to the air guide seat 2. The air guide seat 2, in cooperation with each oxygen concentrator tube 3 and the multi-head air guide tube 4, will guide the prepared oxygen to the human nasal cavity through the delivery tube to be absorbed by the human body;

[0032] As tourists travel on the plateau, when the altitude of the tourist location rises, at this time, due to the increase in altitude, the water content in the air will become less, and then the air humidity will become lower. The positive humidity-sensitive resistor 62 in the detection and control mechanism 6 will automatically reduce its own resistance as the humidity decreases, thereby increasing the amount of electricity passed into each electromagnetic block 513 electrically connected to the positive humidity-sensitive resistor 62, thereby enhancing the magnetism of the electromagnetic block 513, so that the permanent magnet block 514, under the action of the suction force of the electromagnetic block 513, will further overcome the elastic force of the telescopic spring 16, and pull the blocking ball 52 up through the sub-rod 511. As the blocking ball 52 rises, the distance between the blocking ball 52 and the inner wall of the oxygen-conducting tube 3 will increase, thereby increasing the oxygen outlet space of the oxygen-conducting tube 3, and automatically increasing the oxygen delivery amount, so that tourists can better absorb oxygen;

[0033] When the power of the lithium battery 8 is exhausted, the electromagnetic plate 142 will be powered off and demagnetized. At this time, the electromagnetic plate 142 will no longer attract the permanent magnet plate 143, so that the reset spring 20 will release energy, push the permanent magnet plate 143 to slide, and the permanent magnet plate 143 will drive the conductive block 144 to automatically dock with the second conductive plate 146, so that the spare power storage board 11 automatically intervenes in the device to form a loop, providing power for the device to ensure the normal oxygen production of the device. At the same time, as the spare power storage board 11 is connected to the circuit, the power replacement sound and light prompter 21 electrically connected to the second conductive plate 146 will emit a sound and light prompt to remind the user that the power of the lithium battery 8 is exhausted and the spare power storage board 11 intervenes, so that the user can replace the lithium battery 8 under the reminder. Under the control of the time relay 22, the power replacement sound and light prompter 21 will work for 3 minutes and stop to avoid continuous work and waste of power.

[0034] When tourists carry the portable oxygen concentrator body 1, as the tourists walk, the elastic hemispherical layers 12 on one side of the portable oxygen concentrator body 1 will continuously come into contact with the human body, be squeezed and deformed. During the deformation of the elastic hemispherical layer 12, the guide rod 131 will be driven to move. During the movement of the guide rod 131, the pressing block 133 will continuously squeeze the ceramic piezoelectric sheet 132. During the compression and deformation of the ceramic piezoelectric sheet 132, electrical energy will be generated, which will supplement the backup battery board 11 to a certain extent. While achieving energy saving, the service life of the backup battery board 11 can be increased.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable oxygen concentrator suitable for plateau environments, comprising a portable oxygen concentrator body (1), characterized in that: An air guide seat (2) is fixedly arranged on the upper side of the portable oxygen concentrator body (1), and the air guide seat (2) is connected to the exhaust port of the portable oxygen concentrator body (1). A plurality of oxygen guide tubes (3) are fixedly connected to the air guide seat (2), and each oxygen guide tube (3) is commonly connected to a multi-head air guide tube (4). The lower side of the oxygen guide tube (3) is designed in a frustum shape, and the oxygen guide tube (3) is designed to be narrow at the bottom and wide at the top. An opening self-adjusting mechanism (5) is arranged in the oxygen guide tube (3), and the opening self-adjusting mechanism (5) is composed of a telescopic rod (51) and a blocking ball (52). The telescopic rod (51) is fixedly arranged in the oxygen guide tube (3), and the telescopic rod (52) is connected to the oxygen guide tube (3). The lower end of the telescopic rod (51) is fixedly connected to the blocking ball (52), the telescopic rod (51) is composed of a sub-rod (511), a mother rod (512), an electromagnetic block (513) and a permanent magnet block (514), the oxygen guide tube (3) is fixedly connected to a fixed rod (15), and the mother rod (512) is fixedly arranged on the fixed rod (15), the sub-rod (511) is slidably connected to the mother rod (512) via the permanent magnet block (514), and the lower end of the sub-rod (511) is fixedly connected to the blocking ball (52), the electromagnetic block (513) is embedded in the mother rod (512), and the electromagnetic block (513) is connected to the permanent magnet block (514) via a telescopic spring (16). 14) is fixedly connected, a detection control mechanism (6) is provided on one side of the air guide seat (2) and is matched with each opening self-adjusting mechanism (5), the detection control mechanism (6) is composed of a detection box (61) and a positive humidity sensitive resistor (62), the detection box (61) is fixedly arranged on the air guide seat (2), and the positive humidity sensitive resistor (62) is fixedly arranged in the detection box (61), a vent (17) is provided on the detection box (61), and a dustproof net (18) is provided on the vent (17), the positive humidity sensitive resistor (62) is connected in series with each electromagnetic block (513), and an electric A battery chamber (7) is provided in the battery chamber (7), a lithium battery (8) is provided in the battery chamber (7), a cover plate (9) is threadedly connected to the battery chamber (7), a buffer seat (10) is fixedly connected to one side of the portable oxygen concentrator body (1), a backup power storage plate (11) is provided in the buffer seat (10), a plurality of elastic hemispherical layers (12) are fixedly connected to one side of the buffer seat (10), a power replenishment mechanism (13) matched with the backup power storage plate (11) is provided between the elastic hemispherical layers (12) and the buffer seat (10), and a self-switching switch (14) matched with the lithium battery (8) and the backup power storage plate (11) is provided in the gas guide seat (2).

2. A portable oxygen concentrator suitable for plateau environment according to claim 1, characterized in that: The power compensation mechanism (13) is composed of a guide rod (131), a ceramic piezoelectric sheet (132) and a pressure block (133); the guide rod (131) is fixedly arranged in the elastic hemispherical layer (12); a sliding opening (19) matching the guide rod (131) is provided on the buffer seat (10); the ceramic piezoelectric sheet (132) is embedded in the sliding opening (19); the pressure block (133) is fixedly arranged on the guide rod (131); the pressure block (133) and the ceramic piezoelectric sheet (132) are pressed against each other; and the ceramic piezoelectric sheet (132) is electrically connected to the standby power storage plate (11).

3. A portable oxygen concentrator suitable for plateau environment according to claim 1, characterized in that: The self-switching switch (14) is composed of a switch box (141), an electromagnetic plate (142), a permanent magnetic plate (143), a conductive block (144), a first conductive sheet (145), and a second conductive sheet (146); the switch box (141) is fixedly arranged in the air guide seat (2); the electromagnetic plate (142) is embedded in the switch box (141); the electromagnetic plate (142) is fixedly connected to the permanent magnetic plate (143) via a return spring (20); the permanent magnetic plate (143) is slidably connected to the switch box (141); and the conductive block (144) is fixedly arranged in the air guide seat (2); and the electromagnetic plate (142) is fixedly connected to the permanent magnetic plate (143) via a return spring (20). The electric block (144) is fixedly arranged on the permanent magnetic plate (143), the first conductive sheet (145) and the second conductive sheet (146) are both embedded in the inner bottom surface of the lower end of the switch box (141), and the first conductive sheet (145) is in contact with the conductive block (144), the conductive block (144) is electrically connected to the portable oxygen concentrator body (1) and each electromagnetic block (513), the first conductive sheet (145) is electrically connected to the lithium battery (8), and the second conductive sheet (146) is electrically connected to the backup storage board (11).

4. A portable oxygen concentrator suitable for plateau environment according to claim 1, characterized in that: The portable oxygen concentrator body (1) is provided with a battery replacement sound and light indicator (21), and the battery replacement sound and light indicator (21) is electrically connected to the second conductive sheet (146).

5. A portable oxygen concentrator suitable for plateau environment according to claim 4, characterized in that: The portable oxygen concentrator body (1) is provided with a time relay (22), and the time relay (22) is electrically connected to the battery replacement sound and light prompter (21).

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