A waterproof portable WIFI device

Abstract

The present invention provides a waterproof portable WIFI device, belonging to the field of 5G communication technology. The invention includes a device body and a protective shell, the protective shell is provided with an installation groove matching the device body, and also includes a protective sealing component, an induction adjustment component, and a limit component; through the cooperation of the pressure block and the waterproof airbag, the sealing pressure can be automatically adjusted according to the installation state of the device, effectively enhancing the sealing performance, making the data transmission processing more stable, so as to achieve a more efficient use effect of the existing WIFI device. In winter or rainy season, the effect of reducing the pressure inside the air storage cavity is greater than that in the air replenishment cavity, forming a pressure difference, so that the air replenishment push plate is driven to move through the sliding plate and the gas inside the air replenishment cavity is squeezed into the waterproof airbag, so that the waterproof airbag expands and continues to press against the outer wall of the device body, so that the sealing effect of the device is greatly improved, the waterproof performance of the portable WIFI device is significantly improved, and the communication efficiency of the portable WIFI device is fully improved.

Description

Technical Field

[0001] The present invention relates to the field of 5G communication technology, and in particular to a waterproof portable WIFI device. Background Art

[0002] Portable WIFI is a device that can convert wired, 2G, 3G, 4G, 5G networks or Internet connections on computers into WIFI signals. It can meet the needs of business people and tourists who travel and work on the move for their dependence on the Internet. It is divided into two types: SIM card and USB computer use. It uses a wired network, a wireless Internet chip (SIM card) provided by a wireless operator, or the computer's own Internet connection as a network source. On this basis, a WIFI hotspot sharing network is established. Through this set of equipment, non-WIFI access Internet connections can be expanded into a WIFI network for use by Internet terminals.

[0003] Most of the portable WIFI devices in the prior art are not provided with effective waterproof measures, which causes the portable WIFI devices to be short-circuited easily due to water vapor when the users use the portable WIFI devices in a humid environment, thereby increasing the failure rate of the portable WIFI devices and affecting the communication effect of the portable WIFI devices. In addition, since the portable WIFI devices generate more heat when in use, if only a waterproof bag is used to waterproof the device during use, this will affect the heat dissipation effect of the device, thereby reducing its service life.

[0004] How to invent a waterproof portable WIFI device to improve these problems has become an urgent problem to be solved by those skilled in the art. Summary of the invention

[0005] In order to make up for the above shortcomings, the present invention provides a waterproof portable WIFI device, aiming to improve the problems mentioned in the above background.

[0006] The present invention is achieved in that:

[0007] The present invention provides a waterproof portable WIFI device, comprising a device body and a protective shell, wherein the protective shell is provided with a mounting groove matching the device body, and further comprising:

[0008] Protective sealing assembly: The protective sealing assembly is arranged inside the protective shell, and is used to automatically seal between the device body and the protective shell and to preliminarily fix the device body and the protective shell;

[0009] Inductive adjustment component: the inductive adjustment component is arranged above the protective sealing component, and the inductive adjustment component can control the sealing strength of the protective sealing component according to the change of the external temperature;

[0010] Limiting assembly: The limiting assembly is arranged on the device body and the protective shell, and the limiting assembly is used to stably connect the device body and the protective shell.

[0011] Preferably, the protective sealing assembly includes a waterproof airbag and a sealing cavity arranged at the bottom of the mounting groove, the waterproof airbag is fixedly arranged on the inner wall of the mounting groove, the bottom wall of the sealing cavity is fixedly connected with a reset spring, the end of the reset spring is fixedly connected with a pressure block, and an air supply pipeline is arranged between the bottom side wall of the sealing cavity and the side wall of the waterproof airbag.

[0012] Preferably, the pressure block is slidingly sealed and connected to the inner cavity of the sealing cavity, the waterproof airbag is in an unsaturated state when the reset spring is in an initial state, the waterproof airbag is arranged in a ring shape, the outer wall of the waterproof airbag is sealed to the installation groove, and the protective shell is made of a thermally conductive elastomer material.

[0013] Preferably, the induction adjustment component includes an air storage chamber arranged in the protective shell and an air replenishing chamber fixedly connected to the side wall of the mounting groove, the side wall of the air storage chamber is through-connected with a connecting chamber, a sliding plate is slidably connected inside the connecting chamber, a magnetic block is fixedly arranged at the lower end of the sliding plate, the lower port of the air replenishing chamber is through-connected with the waterproof airbag, an air replenishing push plate is slidably connected in the upper inner cavity of the air replenishing chamber, and a micro magnetic block is fixedly arranged at the upper end of the air replenishing push plate.

[0014] Preferably, the volume of the air storage cavity is larger than the sum of the volumes of the waterproof airbag and the air replenishing cavity, the magnetic block and the micro-magnetic block are arranged opposite to each other, the magnetic forces of the opposite surfaces of the magnetic block and the micro-magnetic block are opposite, and the magnetic force between the magnetic block and the micro-magnetic block is larger than the sum of the friction forces between the sliding plate and the inner cavity of the connecting cavity and the air replenishing push plate and the inner cavity of the air replenishing cavity.

[0015] Preferably, the connecting cavity and the upper end of the gas supplement cavity are arranged to be of equal length, and the cross-section of the gas supplement cavity is arranged in a double-section L-shape.

[0016] Preferably, the limit assembly includes a limit groove arranged on the side wall of the equipment body and a U-shaped rod slidably connected to the side wall of the protective shell, the end of the U-shaped rod is fixedly connected to the limit plate, the end of the limit plate is prismatic, and a limit spring is slidably sleeved on the outer side wall of the U-shaped rod, and the ends of the limit spring are respectively fixedly connected to the rear side wall of the U-shaped rod and the side wall of the protective shell.

[0017] Preferably, the limit plate and the limit groove are matched with each other, the limit plate is sealed and connected to the side wall of the protective shell, a plurality of water outlet grooves are provided through the upper side wall of the protective shell, the water outlet grooves are arranged to be inclined downward, the inner port is large and the outer port is small, and the inner end of the water outlet groove is arranged close to the upper side wall of the waterproof airbag.

[0018] The beneficial effects of the present invention are:

[0019] Through the cooperation of the pressure block and the waterproof airbag, the sealing pressure can be automatically adjusted according to the installation status of the equipment, effectively enhancing the sealing performance; in winter or in rain, the effect of reducing the pressure inside the air storage cavity is greater than that in the air replenishment cavity, forming a pressure difference, so that the air storage cavity sucks the sliding plate in the connecting cavity to move, thereby driving the air replenishment push plate to move through the sliding plate and squeeze the gas inside the air replenishment cavity into the waterproof airbag, so that the waterproof airbag expands and continues to press against the outer wall of the device body, so that the sealing effect of the device is greatly improved, making data transmission processing more stable, significantly improving the waterproof performance of the portable WIFI device, and fully improving the communication efficiency of the portable WIFI device; when the outside temperature is high, the gas inside the waterproof airbag can be extracted through the reverse movement of the air replenishment push plate, and then the device body can be ventilated and cooled;

[0020] The setting of the limit component makes the installation of the equipment faster. The design of the protective shell takes into account both water discharge and heat dissipation needs, and can also provide elastic protection for the equipment body. When the device accidentally falls, it can absorb and buffer external impacts and protect internal components from damage. The setting of the thermal conductive elastomer and the water outlet groove not only provides effective heat dissipation capabilities, but also provides elastic protection when the device accidentally falls, reducing the damage to internal components caused by impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of a waterproof portable WIFI device provided by an embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of the main structure of a waterproof portable WIFI device provided by an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of a waterproof portable WIFI device protective shell provided by an embodiment of the present invention;

[0025] Figure 4 It is a schematic diagram of the cross-sectional structure of a waterproof portable WIFI device protective shell provided by an embodiment of the present invention;

[0026] Figure 5It is a schematic diagram of a front cross-sectional structure of a waterproof portable WIFI device protective shell provided by an embodiment of the present invention;

[0027] Figure 6 It is a schematic diagram of the enlarged structure of a waterproof portable WIFI device A provided by an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of a waterproof portable WIFI device provided by an embodiment of the present invention when the device body is installed;

[0029] Figure 8 It is a schematic structural diagram of a waterproof portable WIFI device provided by an embodiment of the present invention when the reset spring is not compressed;

[0030] Fig. 9 It is a schematic diagram of the enlarged structure of a waterproof portable WIFI device B provided by an embodiment of the present invention;

[0031] Fig.10 It is a schematic diagram of the structure of a water outlet tank of a waterproof portable WIFI device provided by an embodiment of the present invention.

[0032] In the figure: 1. Equipment body; 2. Protective shell; 3. Waterproof airbag; 4. Pressure block; 5. U-shaped rod; 6. Sealing chamber; 7. Air storage chamber; 8. Air replenishing chamber; 101. Limiting groove; 201. Installation groove; 202. Water outlet groove; 501. Limiting plate; 502. Limiting spring; 601. Reset spring; 602. Air transmission pipeline; 701. Connecting chamber; 702. Sliding plate; 703. Magnetic block; 801. Air replenishing push plate; 802. Micro magnetic block. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0034] Reference Figure 1-4 A waterproof portable WIFI device includes a device body 1 and a protective shell 2, wherein the protective shell 2 is provided with a mounting groove 201 matching the device body 1, and further includes:

[0035] Protective sealing assembly: The protective sealing assembly is arranged inside the protective shell 2, and is used to automatically seal between the device body 1 and the protective shell 2 and to preliminarily fix the device body 1 and the protective shell 2;

[0036] Inductive adjustment component: The inductive adjustment component is arranged above the protective sealing component, and the inductive adjustment component can control the sealing strength of the protective sealing component according to the change of the external temperature;

[0037] Limiting component: The limiting component is arranged on the device body 1 and the protective shell 2, and the limiting component is used to stably connect the device body 1 and the protective shell 2;

[0038] Further, the protective sealing assembly includes a waterproof airbag 3 and a sealing cavity 6 arranged at the bottom of the installation groove 201, the waterproof airbag 3 is fixedly arranged on the inner side wall of the installation groove 201, the bottom wall of the sealing cavity 6 is fixedly connected with a return spring 601, the end of the return spring 601 is fixedly connected with a pressure block 4, and an air delivery pipeline 602 is arranged between the bottom side wall of the sealing cavity 6 and the side wall of the waterproof airbag 3;

[0039] It should be noted that: the pressure block 4 is slidably sealed to the inner cavity of the sealing cavity 6 to ensure that the gas will not overflow from the sealing cavity 6 when the pressure block 4 is squeezed, the waterproof airbag 3 is in an unsaturated state when the reset spring 601 is in the initial state, the waterproof airbag 3 is annular, and the outer wall of the waterproof airbag 3 is sealed to the mounting groove 201 to ensure the internal sealing between the device body 1 and the protective shell 2, and the protective shell 2 is made of a thermally conductive elastomer material. This type of material combines the flexibility and plasticity of traditional elastomers. By adding thermally conductive particles (such as aluminum powder, copper powder or carbon-based materials such as graphene, carbon nanotubes) to the elastomer matrix, the thermal conductivity of the material can be significantly improved, so that it has both the ability of heat dissipation and elastic protection;

[0040] Reference Figure 3-10 The induction adjustment component includes an air storage chamber 7 arranged in the protective shell 2 and an air replenishment chamber 8 fixedly connected to the side wall of the mounting groove 201, the side wall of the air storage chamber 7 is connected through a connecting chamber 701, a sliding plate 702 is slidably connected inside the connecting chamber 701, a magnetic block 703 is fixedly arranged at the lower end of the sliding plate 702, the lower port of the air replenishment chamber 8 is connected through and through with the waterproof airbag 3, an air replenishment push plate 801 is slidably connected in the upper end inner cavity of the air replenishment chamber 8, and a micro magnetic block 802 is fixedly arranged at the upper end of the air replenishment push plate 801;

[0041] It should be noted that the volume of the air storage chamber 7 is greater than the sum of the volumes of the waterproof airbag 3 and the air replenishing chamber 8, ensuring that when the external temperature changes, the air pressure change in the air storage chamber 7 is greater than the air pressure change in the air replenishing chamber 8 and the waterproof airbag 3, the magnetic block 703 and the micro-magnetic block 802 are arranged opposite to each other, the magnetic properties of the opposite surfaces of the magnetic block 703 and the micro-magnetic block 802 are opposite, and the magnetic force between the magnetic block 703 and the micro-magnetic block 802 is greater than the magnetic force between the sliding plate 702 and the connecting chamber 701. The sum of the friction between the cavity and the air-inflation push plate 801 and the inner cavity of the air-inflation cavity 8. When the sliding plate 702 moves, driven by the magnetic block 703 and the micro-magnetic block 802, the air-inflation push plate 801 will also move inside the air-inflation cavity 8, so that the air pressure in the waterproof airbag 3 can be controlled according to the changes in the external environment, thereby meeting different needs. The connecting cavity 701 and the upper end of the air-inflation cavity 8 are set to be equal in length, and the cross-section of the air-inflation cavity 8 is set in a double-section L-shape, which increases the volume of the air-inflation cavity 8;

[0042] Furthermore, the limiting assembly includes a limiting groove 101 arranged on the side wall of the device body 1 and a U-shaped rod 5 slidably connected to the side wall of the protective shell 2, the end of the U-shaped rod 5 is fixedly connected to the limiting plate 501, the end of the limiting plate 501 is prismatic, which is convenient for the installation of the device body 1, and the limiting spring 502 is slidably sleeved on the outer side wall of the U-shaped rod 5, and the ends of the limiting spring 502 are respectively fixedly connected to the rear side wall of the U-shaped rod 5 and the side wall of the protective shell 2;

[0043] It should be noted that: the limiting plate 501 and the limiting groove 101 are matched with each other to ensure that the device body 1 can be stably clamped, the limiting plate 501 is sealed and connected to the side wall of the protective shell 2, and a plurality of water outlet grooves 202 are provided through the upper side wall of the protective shell 2. The water outlet grooves 202 are arranged to be inclined downward, and the water outlet grooves 202 are arranged with a large inner port and a small outer port. The inner end of the water outlet groove 202 is arranged close to the upper side wall of the waterproof airbag 3. When water enters the top of the waterproof airbag 3, it is ensured that it can be smoothly discharged from the water outlet groove 202, and at the same time, it can also provide a heat dissipation path for the heat dissipation body 1.

[0044] The working principle of this waterproof portable WIFI device is as follows: the device body 1 accesses the Internet through a built-in 4G / 5G network module or a broadband signal module, which enables the device to connect to the mobile operator's network and to a wired broadband network through USB or other methods; after connecting to the Internet, the device body 1 uses the TCP / IP protocol stack to process the data, which is the basis of Internet communication and ensures that the data can be correctly encapsulated, transmitted and parsed; the processed data is then converted into a wireless signal through the WIFI module of the device body 1 and transmitted through a specific frequency (usually 2.4GHz or 5GHz), which allows surrounding devices such as smartphones, tablets, etc. to search for the wireless signal emitted by the device body 1; other devices establish a connection with the device body 1 by entering a password, and then they can access the Internet through this device.

[0045] When the device body 1 is placed in the protective shell 2, the pressure block 4 is squeezed by the device body 1 to slide downward and squeeze the air in the sealing cavity 6, and the air is transported to the waterproof airbag 3 through the air delivery pipeline 602, thereby enhancing its sealing performance, making data transmission processing more stable, so as to achieve a more efficient use effect of the existing WIFI device, and preliminarily fix the device body 1 and the protective shell 2 through the inflated waterproof airbag 3; when the device body is inserted into the bottom of the installation groove 201, the device body 1 will squeeze the limit plate 501, and the U-shaped rod 5 will squeeze the limit spring 502, and finally the limit plate 501 will be snapped and fall into the inside of the limit groove 101. Through the above steps, a more stable connection can be achieved, which not only enhances the stability of the structure, but also further ensures the sealing effect of the device;

[0046] The sensing adjustment component can automatically adjust the air pressure in the waterproof airbag 3 according to the change of external temperature. In winter or when it rains, the lowered external temperature causes the lowered air pressure, which causes the lowered air pressure inside the waterproof airbag 3, causing the waterproof airbag 3 to shrink, and the pressure against the device body 1 to gradually loosen. At the same time, the air pressure inside the air storage chamber 7 and the air replenishing chamber 8 will also decrease. Since the volume of the air storage chamber 7 is larger than the sum of the volumes of the waterproof airbag 3 and the air replenishing chamber 8, it is ensured that when the external temperature changes, the air pressure change in the air storage chamber 7 is greater than the air pressure change in the air replenishing chamber 8 and the waterproof airbag 3. At this time, the effect of reducing the pressure inside the air storage chamber 7 is greater than that in the air replenishing chamber 8, forming a pressure difference, which causes the air storage chamber 7 to suck and drive the connection. The sliding plate 702 in the cavity 701 moves, and the corresponding magnetic block 703 drives the micro magnetic block 802 to move, thereby driving the air replenishing push plate 801 to move through the sliding plate 702. The moving air replenishing push plate 801 squeezes the gas inside the air replenishing cavity 8 into the waterproof airbag 3, and injects gas into the shrunken waterproof airbag 3 to make the waterproof airbag 3 expand and continue to press against the outer wall of the device body 1, so that the sealing effect of the device is greatly improved, and the situation that external moisture enters the interior of the device body 1 through the gap between the waterproof airbag 3 and the device body 1 is avoided, which significantly improves the waterproof performance of the portable WIFI device and fully improves the communication efficiency of the portable WIFI device.

[0047] When the outside temperature is high, the air pressure inside the air storage chamber 7 becomes high, which causes the sliding plate 702 to drive the micro-magnetic block 802 to move in the opposite direction, thereby extracting the gas inside the waterproof airbag 3, and the waterproof airbag 3 relaxes the pressure on the outer wall of the device body 1, thereby ventilating and cooling the device body 1, effectively avoiding the situation where the temperature between the device body 1 and the protective shell 2 is too high, causing the waterproof airbag 3 to be damaged;

[0048] The design of the protective shell 2 takes into account both the discharge of water and the need for heat dissipation, and can also provide elastic protection for the device body 1. When the device accidentally falls, it can absorb and buffer external impacts and protect internal components from damage. The upper side wall of the protective shell 2 is designed with multiple groups of water outlet grooves 202. The water outlet grooves 202 are inclined downward, and the inner port is larger than the outer port. When water enters the top of the protective shell 2, it can be smoothly discharged through the water outlet grooves 202. In addition, the thermally conductive elastomer material used in the protective shell 2 enhances the thermal conductivity of the material by adding thermally conductive particles (such as aluminum powder, copper powder or carbon-based materials), thereby effectively conducting away the heat generated during the operation of the device body 1 and maintaining the working efficiency and stability of the device.

[0049] Through the above design, the device can maintain excellent waterproof sealing performance under different ambient temperatures, while also taking into account the stability and heat dissipation requirements of the device. It is an efficient and practical portable WiFi device designed for extreme environments.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0051] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A waterproof portable WIFI device, comprising a device body (1) and a protective shell (2), wherein the protective shell (2) is provided with a mounting groove (201) matching the device body (1), characterized in that: Also includes: Protective sealing component: the protective sealing component is arranged inside the protective shell (2), and is used to automatically seal between the device body (1) and the protective shell (2) and to preliminarily fix the device body (1) and the protective shell (2); The protective sealing component comprises a waterproof airbag (3) and a sealing cavity (6) arranged at the bottom of the installation groove (201); the waterproof airbag (3) is fixedly arranged on the inner side wall of the installation groove (201); a reset spring (601) is fixedly connected to the bottom wall of the sealing cavity (6); a pressure block (4) is fixedly connected to the end of the reset spring (601); and an air delivery pipeline (602) is provided between the bottom side wall of the sealing cavity (6) and the side wall of the waterproof airbag (3); Inductive adjustment component: the inductive adjustment component is arranged above the protective sealing component, and the inductive adjustment component can control the sealing strength of the protective sealing component according to the change of the external temperature; The induction adjustment component comprises an air storage cavity (7) arranged in the protective shell (2) and an air replenishment cavity (8) fixedly connected to the side wall of the installation groove (201); the side wall of the air storage cavity (7) is connected through a connecting cavity (701); a sliding plate (702) is slidably connected inside the connecting cavity (701); a magnetic block (703) is fixedly arranged at the lower end of the sliding plate (702); a lower port of the air replenishment cavity (8) is connected through and to the waterproof airbag (3); an air replenishment push plate (801) is slidably connected in the upper inner cavity of the air replenishment cavity (8); a micro magnetic block (802) is fixedly arranged at the upper end of the air replenishment push plate (801); The volume of the air storage chamber (7) is larger than the sum of the volumes of the waterproof airbag (3) and the air replenishing chamber (8); the magnetic block (703) and the micro magnetic block (802) are arranged opposite to each other; the magnetic properties of the opposing surfaces of the magnetic block (703) and the micro magnetic block (802) are opposite; and the magnetic force between the magnetic block (703) and the micro magnetic block (802) is larger than the sum of the friction forces between the sliding plate (702) and the inner cavity of the connecting chamber (701) and between the air replenishing push plate (801) and the inner cavity of the air replenishing chamber (8); The connecting cavity (701) and the upper end of the air-replenishing cavity (8) are arranged to be of equal length, and the cross-section of the air-replenishing cavity (8) is arranged in a double-section L-shape; Limiting assembly: The limiting assembly is arranged on the device body (1) and the protective shell (2), and the limiting assembly is used to stably connect the device body (1) and the protective shell (2).

2. A waterproof portable WIFI device according to claim 1, characterized in that: The pressure block (4) is connected to the inner cavity of the sealing cavity (6) in a sliding and sealing manner. When the reset spring (601) is in an initial state, the waterproof airbag (3) is in an unsaturated state. The waterproof airbag (3) is arranged in a ring shape. The outer wall of the waterproof airbag (3) is sealed to the mounting groove (201). The protective shell (2) is made of a heat-conductive elastomer material.

3. A waterproof portable WIFI device according to claim 1, characterized in that: The limiting assembly comprises a limiting groove (101) arranged on the side wall of the device body (1) and a U-shaped rod (5) slidably connected to the side wall of the protective shell (2); the end of the U-shaped rod (5) is fixedly connected to a limiting plate (501); the end of the limiting plate (501) is prismatic; a limiting spring (502) is slidably sleeved on the outer side wall of the U-shaped rod (5); the ends of the limiting spring (502) are respectively fixedly connected to the rear side wall of the U-shaped rod (5) and the side wall of the protective shell (2).

4. A waterproof portable WIFI device according to claim 3, characterized in that: The limiting plate (501) and the limiting groove (101) are arranged in a matching manner, the limiting plate (501) and the side wall of the protective shell (2) are sealed and connected, a plurality of groups of water outlet grooves (202) are arranged through the upper side wall of the protective shell (2), the water outlet grooves (202) are arranged in a downwardly inclined manner, the water outlet grooves (202) are arranged in a shape of a large inner port and a small outer port, and the inner end of the water outlet groove (202) is arranged close to the upper side wall of the waterproof airbag (3).

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