A multiple seal assembly for a submersible action camera

Abstract

The present application relates to the technical field of sports camera sealing, in particular to a multiple sealing assembly of a diving sports camera, comprising a camera main body, an elastic sealing ring is sleeved outside the camera main body, two sides of the camera main body are provided with edge sealing frames for pressing and sealing the edges of the elastic sealing ring and forming a sealing chamber inside, one side of the elastic sealing ring is provided with a gas generating box capable of generating gas and inflating the sealing chamber, through the cooperation of the edge sealing frame, the gas generating box, the support, the pressing structure and the elastic sealing ring, the sealing chamber can be formed by the cooperation of the elastic sealing ring and the edge sealing frame, the sealing adhesion is good, the direct operation of the original function key is not affected, the gas generating box generates gas, the sealing chamber is inflated when leakage is detected, the elastic sealing ring is expanded to form a floating air bag, which can not only seal and prevent leakage, but also drive the camera main body to float, ensuring the safety of the equipment, and the diver can float comfortably, reducing the risk of accidents.

Description

Technical Field

[0001] This invention relates to the field of action camera sealing technology, and more specifically to a multi-seal assembly for an underwater action camera. Background Technology

[0002] Underwater photography, a film and television special effects technique, involves filming underwater. The photographer, equipped with a protective camera and diving gear, submerges to shoot directly. Underwater photography can realistically depict underwater scenes, such as the lives of aquatic plants and animals, geological data of the seabed and riverbed, and archaeological discoveries. The waterproof sealing performance of underwater action cameras is one of their core functions, directly affecting the normal operation of the equipment, shooting quality, lifespan, and even user safety.

[0003] A camera waterproof case, disclosed in CN205563045U, includes a camera body waterproof case, a connector, and a lens sleeve, wherein the lens sleeve mates with the connector. The advantages of this camera waterproof case are: it effectively protects the camera, and the camera body waterproof case is integrally molded.

[0004] A waterproof housing for a high-sensitivity underwater camera is disclosed in CN113050347B. The housing includes a mounting bracket with a sealing mechanism to prevent seawater from entering. The sealing mechanism includes a detachable transparent cover on one end wall of the mounting bracket.

[0005] However, existing technology cannot handle emergency leaks, and the poor sealing performance can easily affect operations. Summary of the Invention

[0006] (a) Technical problems to be solved The purpose of this invention is to provide a multi-sealing assembly for an underwater action camera in order to solve the above-mentioned problems.

[0007] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: The present invention provides a multi-sealing assembly for a diving sports camera, including a camera body, an elastic sealing ring sleeved on the outer side of the camera body, and sealing frames on both sides of the camera body for pressing and sealing the edge of the elastic sealing ring and forming a sealed chamber therein. A gas generating box is provided on one side of the elastic sealing ring, which can generate gas and fill the sealed chamber. A first docking hole is provided on the gas generating box, and an air inlet pipe connector is connected to the elastic sealing ring for docking and cooperating with the first docking hole. A bracket is detachably connected to the gas generating box. The bracket is equipped with a locking structure for pressing and locking the edge of the elastic sealing ring by the sealing frame. The bracket is also equipped with a pressing structure for pressing the camera body toward the gas generating box and driving the air inlet pipe connector to seal and insert into the first docking hole.

[0008] Furthermore, the gas generating box is provided with a lower storage chamber and an upper storage chamber for placing reactants respectively. A partition plate is provided between the lower storage chamber and the upper storage chamber to separate them. An outer sleeve is provided through the lower storage chamber and the upper storage chamber. An inner sleeve is rotatably provided inside the outer sleeve. The inner sleeve is driven to rotate by a motor fixedly installed on the bottom side of the gas generating box. The upper end of the outer sleeve is connected to the lower port of the first docking hole. Three or more first material passages are evenly distributed around its axis on the outer side wall of the outer sleeve. Three or more second material passages are evenly distributed around their axis on the outer side wall of the inner sleeve. When the inner sleeve is rotated by the motor, the first material passages can change from not coinciding with the second material passages to completely coinciding.

[0009] Furthermore, a sealing gasket is provided at the upper end of the first docking hole, which can abut and seal with the air inlet pipe connector. Two or more air guide channels are opened in the side wall of the gas generator box. The inner contour of the air guide channel is L-shaped. The lower end of the air guide channel is level with the partition plate and communicates with the interior of the lower storage chamber.

[0010] Furthermore, the elastic sealing ring is provided with sealing gaskets on both sides of the sealing edge frame to abut and seal. The sealing edge frame has an L-shaped cross-section. The elastic sealing ring is provided with a pressure detection structure for detecting the air pressure in the sealing cavity and a humidity detection structure for detecting the humidity in the sealing cavity. Both the pressure detection structure and the humidity detection structure are located on the lower side of the elastic sealing ring.

[0011] Furthermore, the air pressure detection structure includes a first conical shell disposed on the camera body, the wide end of the first conical shell being connected to the camera body, and the narrow end of the first conical shell being provided with an air pressure sensor. The humidity detection structure includes a second conical shell disposed on the camera body, the wide end of the second conical shell being connected to the camera body, and the narrow end of the second conical shell being provided with a humidity sensor.

[0012] Furthermore, the bracket is U-shaped, with openings at both ends and connecting holes near the openings. The gas generating box is connected to connecting posts for positioning and connection with the connecting holes. The gas generating box is provided with two sets of fixing seats for clamping and positioning the two ends of the bracket respectively. The fixing seats are provided with set bolts for tightening and fixing the bracket.

[0013] Furthermore, the bracket is fixedly provided with two sets of first locking rods corresponding to the edge sealing frame. Each set includes two first locking rods arranged opposite to each other. A gap is formed between each first locking rod and the bracket to provide space for its deformation displacement. The end of the first locking rod is provided with a first locking tooth. The edge sealing frame is connected with a second locking rod corresponding to the first locking rod. The end of the second locking rod is provided with a second locking tooth. The outer contours of the first locking tooth and the second locking tooth are both triangular.

[0014] Furthermore, a handle is connected between the two first locking rods located on the same side of the bracket, and a through groove is provided on the bracket for the handle to pass through.

[0015] Furthermore, the pressing structure includes a fixed column fixedly mounted on a bracket, a lifting slide cavity is provided inside the fixed column, the lower end of the lifting slide cavity is open and a movable pressing column is slidably arranged inside, a lead screw is rotatably arranged inside the lifting slide cavity, one end of the lead screw passes through the fixed column and is connected to a knob, two guide rods are provided on both sides of the lead screw symmetrically distributed with the lead screw as the center, and a guide slide hole is provided on the movable pressing column for sliding with the guide rod.

[0016] Furthermore, an air pump is installed inside the movable pressure column. The air inlet of the air pump is connected to one end of a suction pipe, and the other end of the suction pipe extends out of the movable pressure column. A positioning platform is provided on the elastic sealing ring. A second docking hole is opened at the center of the positioning platform to mate with the suction pipe. The air outlet of the air pump is connected to one end of an exhaust pipe, and the other end of the exhaust pipe extends out of the movable pressure column and communicates with the outside.

[0017] (III) Beneficial Effects Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Through the coordinated efforts of the edge sealing frame, gas generator box, bracket, pressure-fixing structure, and elastic sealing ring, a sealed chamber can be formed by the elastic sealing ring and the edge sealing frame. The sealing fit is good and does not affect the direct operation of the original function keys. In conjunction with the gas generator box, gas is generated. When a leak is detected, the sealed chamber is inflated, causing the elastic sealing ring to expand and form a floating airbag. This not only provides a gas seal to prevent leakage but also lifts the camera body to the surface, ensuring equipment safety. At the same time, divers can ascend calmly, reducing the risk of accidents.

[0018] 2. The bracket and gas generator box are detachably connected. The edge sealing frame is locked and disassembled through a locking structure. The pressing structure can drive the camera body to dock and press with the gas generator box, which facilitates the assembly, disassembly and replacement of parts of the equipment.

[0019] 3. The air pressure and humidity detection structures can monitor changes in air pressure and humidity within the sealed chamber in real time. Before immersion in water, air pressure changes can be used to assess the sealing performance, and during immersion, water ingress can be detected, allowing for timely alerts to the user and preventing further damage to the equipment due to leaks. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is the present invention. Figure 1 A schematic diagram of the three-dimensional structure in the first direction; Figure 3 This is the present invention. Figure 2 A magnified schematic diagram of the structure at point C; Figure 4 This is the present invention. Figure 1 A schematic diagram of the AA cross-sectional structure; Figure 5 This is the present invention. Figure 4 A magnified schematic diagram of the structure at point D; Figure 6 This is the present invention. Figure 4 A magnified schematic diagram of the structure at point E; Figure 7 This is the present invention. Figure 4 A magnified schematic diagram of the structure at point F; Figure 8 This is the present invention. Figure 1 A schematic diagram of the BB cross-sectional structure; Figure 9 This is the present invention. Figure 8 A magnified schematic diagram of the structure at point G; Figure 10 This is the present invention. Figure 1 A schematic diagram of the second-direction three-dimensional structure.

[0022] The reference numerals in the attached drawings are explained as follows: 1. Camera body; 2. Sealing frame; 3. Gas generator box; 301. Connecting column; 302. Fixing base; 303. Set bolt; 304. Divider plate; 305. Lower storage chamber; 306. Upper storage chamber; 307. Gas guide channel; 308. Outer sleeve; 309. Inner sleeve; 310. First feed channel; 311. Second feed channel; 312. First mating hole; 313. Sealing gasket; 314. Motor; 4. Bracket; 401. Opening slot; 402. Connecting hole; 403. Through slot; 5. Pressing structure; 501. Fixed column; 502. Movable pressing column; 503. Lead screw; 50 4. Guide rod; 505. Adjusting threaded hole; 506. Guide sliding hole; 507. Air pump; 508. Suction pipe; 509. Exhaust pipe; 510. Knob; 6. Air inlet pipe connector; 7. Air pressure detection structure; 701. First conical shell; 702. Air pressure sensor; 8. Humidity detection structure; 801. Second conical shell; 802. Humidity sensor; 9. Locking structure; 901. First locking rod; 902. First locking tooth; 903. Second locking rod; 904. Second locking tooth; 905. Handle; 906. Gap; 10. Elastic sealing ring; 1001. Sealing gasket; 1002. Positioning platform; 1003. Second mating hole. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0024] See Figures 1-10As shown, the present invention provides a multi-sealing assembly for a diving sports camera, including a camera body 1. An elastic sealing ring 10 is fitted on the outer side of the camera body 1. Sealing frames 2 are provided on both sides of the camera body 1 to press and seal the edges of the elastic sealing ring 10 and form a sealed chamber therein. In practical applications, the edges of the elastic sealing ring 10 cooperate with the sealing frames 2 to form a seal. It can expand when inflated, which can enhance the sealing effect and form a floating airbag when leaking. A gas generating box 3 is provided on one side of the elastic sealing ring 10, which can generate gas and inflate the sealed chamber. A first docking hole 312 is provided on the gas generating box 3. An air inlet pipe connector 6 is connected to the elastic sealing ring 10 for docking and cooperating with the first docking hole 312. A bracket 4 is detachably connected to the gas generating box 3. The bracket 4 is provided with a locking structure 9 for pressing and locking the edges of the elastic sealing ring 10 by the sealing frames 2. The bracket 4 is provided with a pressing structure 5 for pressing the camera body 1 toward the gas generating box 3 and driving the air inlet pipe connector 6 to seal and insert with the first docking hole 312.

[0025] See instruction manual attached Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, the gas generating box 3 is provided with a lower storage chamber 305 and an upper storage chamber 306 for placing reactants respectively. A partition plate 304 is provided between the lower storage chamber 305 and the upper storage chamber 306 to separate them. An outer sleeve 308 is provided through the lower storage chamber 305 and the upper storage chamber 306. An inner sleeve 309 is rotatably provided inside the outer sleeve 308. The inner sleeve 309 is driven to rotate by a motor 314 fixedly installed on the bottom side of the gas generating box 3. The upper end of the outer sleeve 308 is connected to the lower port of the first docking hole 312. Three or more first material passages 310 are evenly distributed around their axis on the outer side wall of the outer sleeve 308. Three or more second material passages 311 are evenly distributed around their axis on the outer side wall of the inner sleeve 309. When the inner sleeve 309 is rotated by the motor 314, the first material passages 310 and the second material passages 311 can change from not overlapping to completely overlapping. A sealing gasket 313 is provided at the upper end of the first docking hole 312, which can abut and seal with the air inlet pipe connector 6. Two or more air guide channels 307 are opened in the side wall of the gas generating box 3. The inner contour of the air guide channel 307 is L-shaped. The lower end of the air guide channel 307 is level with the partition plate 304 and communicates with the interior of the lower storage chamber 305. In practical applications, under normal conditions, the reactants in the lower storage chamber 305 and the upper storage chamber 306 are completely isolated by the partition plate 304, the outer sleeve 308 and the inner sleeve 309, and no gas is generated. When gas needs to be filled, the motor 314 drives the inner sleeve 309 to rotate, and the first feed trough 310 and the second feed trough 311 overlap each other. The liquid reactants flow from the upper storage chamber 306 into the lower storage chamber 305 and react with the solid reactants to generate gas, which is then introduced into the sealed chamber through the air guide channel 307. In practical applications, openings can be made on one side of both the lower storage chamber 305 and the upper storage chamber 306, and sealing covers can be installed at the openings to facilitate material discharge and feeding, and facilitate recycling. The motor 314 can also be set as a knob to drive the inner sleeve 309 to rotate. After changing from electric to manual, the cost of the entire gas generator box 3 is greatly reduced, thereby enabling the replacement of the gas generator box 3.

[0026] See instruction manual attached Figure 2 , Figure 4 , Figure 5 and Figure 10 As shown, sealing gaskets 1001 are provided on both sides of the elastic sealing ring 10 to abut and seal against the sealing frame 2. The sealing frame 2 has an L-shaped cross-section. The elastic sealing ring 10 is provided with a pressure detection structure 7 for detecting the air pressure in the sealed cavity and a humidity detection structure 8 for detecting the humidity in the sealed cavity. Both the pressure detection structure 7 and the humidity detection structure 8 are located on the lower side of the elastic sealing ring 10. See the attached instruction manual. Figure 1As shown, the air pressure detection structure 7 includes a first conical shell 701 disposed on the camera body 1. The wide end of the first conical shell 701 is connected to the camera body 1, and the narrow end of the first conical shell 701 is provided with an air pressure sensor 702. The humidity detection structure 8 includes a second conical shell 801 disposed on the camera body 1. The wide end of the second conical shell 801 is connected to the camera body 1, and the narrow end of the second conical shell 801 is provided with a humidity sensor 802.

[0027] See instruction manual attached Figure 2 and Figure 3 As shown, the bracket 4 is U-shaped, with opening slots 401 at both ends. A connecting hole 402 is provided near the opening slot 401 on the bracket 4. A connecting post 301 for positioning and connecting with the connecting hole 402 is connected to the gas generating box 3. The gas generating box 3 is provided with two sets of fixing seats 302 for clamping and positioning the two ends of the bracket 4 respectively. The fixing seats 302 are provided with set bolts 303 for tightening and fixing the bracket 4.

[0028] The bracket 4 is fixedly equipped with two sets of first locking rods 901, each corresponding to the edge sealing frame 2. Each set includes two first locking rods 901 arranged back to back. A gap 906 is formed between each first locking rod 901 and the bracket 4 to provide space for its deformation displacement. The end of the first locking rod 901 is provided with a first locking tooth 902. The edge sealing frame 2 is connected with a second locking rod 903 corresponding to the first locking rod 901. The end of the second locking rod 903 is provided with a second locking tooth 904. The outer contours of the first locking tooth 902 and the second locking tooth 904 are both triangular. A handle 905 is connected between the two first locking rods 901 located on the same side of the bracket 4. The bracket 4 is provided with a through groove 403 for the handle 905 to pass through.

[0029] See instruction manual attached Figure 4 , Figure 5 and Figure 10As shown, the pressing structure 5 includes a fixed column 501 fixedly mounted on the bracket 4. A lifting slide cavity is provided inside the fixed column 501. The lower end of the lifting slide cavity is open and a movable pressing column 502 is slidably mounted inside. A lead screw 503 is rotatably mounted inside the lifting slide cavity. One end of the lead screw 503 passes through the fixed column 501 and is connected to a knob 510. Two guide rods 504 are symmetrically distributed on both sides of the lead screw 503 with the lead screw 503 as the center. A guide hole 506 is provided on the movable pressing column 502 to cooperate with the sliding of the guide rods 504. An air pump 507 is installed inside the movable pressure column 502. The air inlet of the air pump 507 is connected to one end of an air extraction pipe 508, and the other end of the air extraction pipe 508 extends out of the movable pressure column 502. A positioning platform 1002 is provided on the elastic sealing ring 10. A second mating hole 1003, which mates with the air extraction pipe 508, is opened at the center of the positioning platform 1002. The air outlet of the air pump 507 is connected to one end of an exhaust pipe 509, and the other end of the exhaust pipe 509 extends out of the movable pressure column 502 and communicates with the outside. In practical applications, after the pressure-fixing structure 5 loosens the camera body 1, the camera body 1 can move upwards within the bracket 4, thereby separating the first locking tooth 902 from the second locking tooth 904. This allows for the disassembly of the edge sealing frame 2. Alternatively, the first locking rod 901 can be pulled by the handle 905, further separating the first locking tooth 902 from the second locking tooth 904, thus achieving the disassembly of the edge sealing frame 2.

[0030] Working principle and technical effects of the present invention: When in use, first put the elastic sealing ring 10 on the outer edge of the camera body 1. In practical applications, the QuickSwitch button, charging port and indicator light are usually designed independently on the side of the camera. The elastic sealing ring 10 can protect the above parts to reduce the probability of water ingress.

[0031] The bracket 4 and the gas generating box 3 are connected to each other. Specifically, the connecting post 301 is inserted into the connecting hole 402 and the bracket 4 is fixed by the set bolt 303. Then, the camera body 1 is placed into the bracket 4. The pressing structure 5 realizes the docking and pressing of the camera body 1 and the gas generating box 3. Specifically, the knob 510 is turned to drive the lead screw 503 to rotate. The rotation of the lead screw 503 drives the movable pressing post 502 to slide along the guide rod 504 axially, thereby realizing the docking of the air extraction pipe 508 with the second docking hole 1003 and the docking of the air inlet pipe connector 6 with the first docking hole 312, thus realizing the pressing of the camera body 1. The two edge sealing frames 2 respectively fit and seal the front and back edges of the camera body 1, and the locking structure 9 realizes the locking and fixing of the edge sealing frames 2 and prevents them from falling off.

[0032] Before diving, the inner sleeve 309 can be rotated by the motor 314, allowing the reaction liquid, such as dilute hydrochloric acid, in the upper storage chamber 306 to enter the lower storage chamber 305 through the second feed trough 311 and the first feed trough 310 for a preliminary reaction. The dilute hydrochloric acid and calcium carbonate react to generate gas, which inflates the sealed chamber. The elastic sealing ring 10 expands during inflation, and the pressure sensor 702 of the pressure detection structure 7 detects whether the pressure changes within a certain period of time. Then, as needed, the air pump 507 expels the gas from the sealed chamber through the suction pipe 508 and the exhaust pipe 509, reducing resistance during diving. During diving, the humidity detection structure 8 can detect whether water has entered the chamber. When the humidity is detected to be greater than a certain value, the user can be alerted by an indicator light or vibration. Specifically, a buzzer or LED indicator can be installed on the bracket 4 for indication. In the event of a leak, the inner sleeve 309 can be rotated by the motor 314, thereby allowing the reaction liquid, such as dilute hydrochloric acid, in the upper storage chamber 306 to enter the lower storage chamber 305 sequentially through the second feed trough 311 and the first feed trough 310. The dilute hydrochloric acid then reacts with calcium carbonate, with the chemical reaction equation being: CaCO3 + 2HCl = CaCl2 + H2O + CO2↑. The resulting carbon dioxide inflates the sealed chamber through the air guide 307 and the air inlet pipe connector 6, inflating the elastic sealing ring 10 like an inflating balloon, forming a floating airbag. This airbag not only seals the leak point but also uses the overall buoyancy to lift the camera body 1 towards the water surface. The rotation of the inner sleeve 309 can be controlled by the motor 314 to adjust the reaction rate of the dilute hydrochloric acid and calcium carbonate, thereby controlling the amount and speed of carbon dioxide production and thus the buoyancy speed. This method uses an elastic sealing ring 10, which does not affect the user's feel and allows the diver to rise on their own. The diver can gradually adapt to the water pressure and rise without being too anxious. After rising, the location and size of the leak can be checked, and the various parts can be replaced if necessary.

[0033] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A multi-sealing assembly for an underwater action camera, characterized in that: The camera body (1) is provided with an elastic sealing ring (10) on its outer side. The camera body (1) has sealing frames (2) on both sides for pressing and sealing the edge of the elastic sealing ring (10) and forming a sealed chamber therein. The elastic sealing ring (10) has a gas generating box (3) on one side that can generate gas and fill the sealed chamber. The gas generating box (3) has a first docking hole (312) on it. The elastic sealing ring (10) is connected to an air inlet pipe connector (6) for docking and cooperating with the first docking hole (312). The gas generating box (3) is detachably connected to a bracket (4). The bracket (4) is provided with a locking structure (9) for pressing and locking the edge of the elastic sealing ring (10) by the sealing frame (2). The bracket (4) is provided with a pressing structure (5) for pressing the camera body (1) toward the gas generating box (3) and for sealing and driving the air inlet pipe connector (6) and the first docking hole (312). The gas generating box (3) is provided with a lower storage chamber (305) and an upper storage chamber (306) for placing reactants respectively. A partition plate (304) is provided between the lower storage chamber (305) and the upper storage chamber (306) to separate them. An outer sleeve (308) is provided through the lower storage chamber (305) and the upper storage chamber (306). An inner sleeve (309) is rotatably provided inside the outer sleeve (308). The inner sleeve (309) is driven by a motor (314) fixedly installed on the bottom side of the gas generating box (3). When rotated, the upper end of the outer sleeve (308) is connected to the lower port of the first docking hole (312). The outer wall of the outer sleeve (308) is provided with three or more first material passage grooves (310) evenly distributed around its axis. The outer wall of the inner sleeve (309) is provided with three or more second material passage grooves (311) evenly distributed around its axis. When the inner sleeve (309) is rotated by the motor (314), the first material passage grooves (310) and the second material passage grooves (311) can change from not overlapping to completely overlapping. The elastic sealing ring (10) is provided with sealing gaskets (1001) on both sides of the sealing frame (2) to abut and seal. The sealing frame (2) has an L-shaped cross-section. The elastic sealing ring (10) is provided with a pressure detection structure (7) for detecting the air pressure in the sealing chamber and a humidity detection structure (8) for detecting the humidity in the sealing chamber. The pressure detection structure (7) and the humidity detection structure (8) are both located on the lower side of the elastic sealing ring (10). The air pressure detection structure (7) includes a first conical shell (701) disposed on the camera body (1), the wide end of the first conical shell (701) being connected to the camera body (1), and the narrow end of the first conical shell (701) being provided with an air pressure sensor (702). The humidity detection structure (8) includes a second conical shell (801) disposed on the camera body (1), the wide end of the second conical shell (801) being connected to the camera body (1), and the narrow end of the second conical shell (801) being provided with a humidity sensor (802).

2. The multi-sealing assembly for an underwater action camera according to claim 1, characterized in that: The upper end of the first docking hole (312) is provided with a sealing gasket (313) that can abut against and seal with the air inlet pipe connector (6). The side wall of the gas generating box (3) has two or more air guide channels (307). The inner contour of the air guide channel (307) is L-shaped. The lower end of the air guide channel (307) is level with the partition plate (304) and communicates with the interior of the lower storage chamber (305).

3. The multi-sealing assembly for an underwater sports camera according to claim 1, characterized in that: The bracket (4) is U-shaped. Opening slots (401) are provided at both ends of the bracket (4). A connecting hole (402) is provided near the opening slot (401) of the bracket (4). A connecting post (301) for positioning connection with the connecting hole (402) is connected to the gas generating box (3). Two sets of fixing seats (302) are provided on the gas generating box (3) for clamping and positioning the two ends of the bracket (4) respectively. The fixing seat (302) is provided with a set bolt (303) for tightening and fixing the bracket (4).

4. The multi-sealing assembly for an underwater action camera according to claim 1, characterized in that: The bracket (4) is fixedly provided with two sets of first locking rods (901) respectively corresponding to the edge sealing frame (2). Each set includes two first locking rods (901) arranged back to back. A gap (906) is formed between each first locking rod (901) and the bracket (4) to provide space for its deformation displacement. The end of the first locking rod (901) is provided with a first locking tooth (902). The edge sealing frame (2) is connected with a second locking rod (903) corresponding to the first locking rod (901). The end of the second locking rod (903) is provided with a second locking tooth (904). The outer contours of the first locking tooth (902) and the second locking tooth (904) are both triangular.

5. The multi-sealing assembly for an underwater action camera according to claim 4, characterized in that: A handle (905) is connected between two first locking rods (901) located on the same side of the bracket (4), and a through groove (403) is provided on the bracket (4) for the handle (905) to pass through.

6. The multi-sealing assembly for an underwater action camera according to claim 1, characterized in that: The pressing structure (5) includes a fixed column (501) fixedly mounted on the bracket (4). A lifting slide cavity is provided inside the fixed column (501). The lower end of the lifting slide cavity is open and a movable pressing column (502) is slidably mounted inside. A lead screw (503) is rotatably mounted inside the lifting slide cavity. One end of the lead screw (503) passes through the fixed column (501) and is connected to a knob (510). Two guide rods (504) are symmetrically distributed on both sides of the lead screw (503) with the lead screw (503) as the center. A guide slide hole (506) is provided on the movable pressing column (502) for sliding with the guide rod (504).

7. The multi-sealing assembly for an underwater action camera according to claim 6, characterized in that: An air pump (507) is installed inside the movable pressure column (502). The air inlet of the air pump (507) is connected to one end of an air extraction pipe (508), and the other end of the air extraction pipe (508) passes through the movable pressure column (502). A positioning platform (1002) is provided on the elastic sealing ring (10). A second docking hole (1003) that mates with the air extraction pipe (508) is opened at the center of the positioning platform (1002). The air outlet of the air pump (507) is connected to one end of an exhaust pipe (509), and the other end of the exhaust pipe (509) passes through the movable pressure column (502) and communicates with the outside.

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