An airbag type buoyancy adjustable surfboard

Abstract

The application discloses an air bag type floating force adjustable surfboard, and relates to the technical field of air bag type surfboards.The air bag type floating force adjustable surfboard comprises a folding frame and a modular air bag, the modular air bag is installed on the folding frame, and the folding modular mechanism comprises the folding coating fixed plate installed on the folding frame, the adjusting foot pedal installed on the folding coating fixed plate, and the elastic band installed on the adjusting foot pedal and used for fixing the air bag, thereby improving the stability of the user during driving, reducing the risk of falling into water caused by foot dislocation, and achieving the grasping assistance of the user through the elastic connection of the handle and the rope box, further improving the driving stability of the user, assisting in maintaining the stability of the body gravity center relative to the board body through the arm strength, reducing the gravity center deviation caused by wave surging, and providing a force application fulcrum for subsequent grip adjustment operation.

Description

Technical Field

[0001] This invention relates to the field of airbag surfboard technology, specifically to an airbag-type adjustable buoyancy surfboard. Background Technology

[0002] An inflatable surfboard is a water sports device that uses a flexible, sealed wrapping layer as the main body of the board and forms its shape by inflating it with gas. This flexible, sealed wrapping layer is usually made of organic polymer materials, and its upper and lower inner walls are equipped with a wire structure. When the board is filled with gas to the set air pressure, the wires pull the upper and lower inner walls together, keeping the board stable in shape and sturdy in structure. Inflatable surfboards are inflated through the air nozzle to form their shape when in use, and can be folded and stored when not in use. They have the advantages of being small in size, lightweight, and easy to carry and store.

[0003] Patent publication number CN211391613U includes a surfboard body and an EVA anti-slip pad attached to the surface of the surfboard body. The surfboard body has an upper air chamber and a lower air chamber connected by a one-way valve. A valve 1 connected to the upper air chamber is located on the surface of the surfboard body. Each side of the surfboard body has a spare airbag. An air tube connected to the spare airbag is located in the upper air chamber. A valve 2 connected to the air tube is located on the surface of the surfboard body. The surfboard body has a downward-facing recess forming a receiving cavity, within which an air cylinder is placed. Even if the lower air chamber leaks or ruptures, the upper air chamber and the spare airbag can still support the surfer, thus ensuring the surfer's safety on the water.

[0004] The above technical solution involves a valve connected to an air tube installed on the surface of the surfboard. The surfboard body is recessed downwards to form a cavity containing an air cylinder. Even if the lower air chamber leaks or ruptures, the upper air chamber and the spare air bladder can still support the surfer, thus ensuring their safety on the water. The double-layered air bladder used in this surfboard is a single, integrated structure, with each air chamber interconnected or fixedly connected. It does not divide the overall air bladder into multiple independently detachable and inflatable modular air bladder units. When the surfboard is scratched by sharp objects, hit by rocks, or experiences material fatigue during use... In situations such as fatigue, when an airbag in a certain area ruptures, the lack of modular isolation and replacement mechanisms means that air leakage from the damaged area often affects the entire air chamber and even adjacent air chambers, causing a significant loss of buoyancy. Even if the upper air chamber and the spare airbag can still provide some support, the overall rigidity, balance performance, and load distribution of the board have been irreversibly affected. More importantly, it is difficult to replace damaged local units individually with integrated airbags. Users often need to replace the entire surfboard or perform complex repairs, resulting in high maintenance costs and short service life, which seriously restricts the product's economy and reliability. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an airbag-type adjustable buoyancy surfboard, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an airbag-type adjustable buoyancy surfboard, comprising a folding frame and a modular airbag, wherein the modular airbag is mounted on the folding frame, and the airbag-type adjustable buoyancy surfboard further comprises: Folding coating fixing plate; A portable modular device for improving device convenience and achieving modularity includes a folding modular mechanism mounted on the folding frame and an auxiliary stabilizing mechanism mounted on the folding modular mechanism. The folding modular mechanism is used to improve portability through folding and to prevent damage to a single airbag from affecting the overall buoyancy of the device through modularly designed airbags. The auxiliary stabilization mechanism improves the user's driving stability by increasing the grip points.

[0007] The folding modular mechanism includes a folding coating fixing plate mounted on the folding frame, an adjusting foot pedal mounted on the folding coating fixing plate, an elastic band mounted on the adjusting foot pedal, a drag-reducing ramp mounted on the folding coating fixing plate, a tail fin telescopic seat mounted on the folding coating fixing plate, a rotating locking rod mounted on the tail fin telescopic seat, and a tail fin body mounted on the rotating locking rod.

[0008] The auxiliary stabilizing mechanism includes a rope box mounted on the folded coated fixing plate, a rope frame mounted on the rope box, a tension rope mounted on the rope frame, and a handle mounted on the tension rope.

[0009] The surface of the elastic band is provided with a protective arc plate for protecting the front of the user's feet. The modular airbags are connected by pipes, and a one-way valve is provided inside the pipes connecting the modular airbags.

[0010] The portable modular device includes a tail fin adjustment device mounted on the handle, the tail fin adjustment device including a tail fin lifting mechanism mounted on the handle and a tail fin rotating mechanism mounted on the tail fin lifting mechanism; The tail fin adjustment device is used to adjust the tail fin. The tail fin lifting mechanism is used to adjust buoyancy by raising and lowering the tail fin; The tail fin rotation mechanism is used to achieve stability and flexibility during driving by adjusting the angle of the tail fin.

[0011] The tail fin lifting mechanism includes a handle telescopic block mounted on the handle, a compression plate mounted on the handle telescopic block, a spring rod one mounted on the compression plate, a partition slide plate mounted on the handle, a spring rod two mounted on the partition slide plate, a hydraulic oil pipe mounted on the handle, a hydraulic cylinder mounted on the folding frame, and a linkage rod mounted on the hydraulic cylinder. The grip telescopic block has an arc surface, the spring rod is connected to the handle, the spring rod is connected to the handle, and the end of the linkage rod away from the hydraulic cylinder is connected to the free end of the tail fin telescopic seat.

[0012] The tail fin rotation mechanism includes a sliding frame mounted on the rope box, a spring rod mounted on the sliding frame, a force-bearing rod mounted on the folding coating fixing plate, and a telescopic linkage plate mounted on the force-bearing rod. The sliding frame is connected to the tension rope, the end of the spring rod away from the sliding frame is connected to the rope box, and the end of the telescopic linkage plate away from the force-bearing rod is connected to the rotating locking rod.

[0013] The portable modular device includes an emergency braking device mounted on the rotating latching rod, the emergency braking device including an emergency balancing mechanism mounted on the rotating latching rod and an emergency drag-increasing mechanism mounted on the emergency balancing mechanism; The emergency braking device is used to brake the surfboard in an emergency. The emergency balancing mechanism is used to balance the surfboard in emergency situations. The emergency drag-increasing mechanism is used to increase drag and reduce speed of the surfboard in emergency situations.

[0014] The emergency balancing mechanism includes a fixed ring mounted on the rotating locking rod, a telescopic linkage rod mounted on the fixed ring, a connecting linkage block mounted on the telescopic linkage rod, a fixed drag-reducing plate mounted on the folding frame, a drag-increasing arc plate mounted on the fixed drag-reducing plate, and a connecting airbag mounted on the drag-increasing arc plate. The fixed drag-reducing plate has a second arc surface on its surface, the drag-increasing arc plate has a third arc surface on its surface, and the drag-increasing arc plate is connected to the connecting linkage block.

[0015] The emergency drag-increasing mechanism includes a connecting plate mounted on the tail fin body, an adjusting plate mounted on the connecting plate, and a deceleration arc plate mounted on the adjusting plate; The folded coating fixing plate has an arc-shaped groove, which coincides with the deceleration arc plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this invention, elastic bands are used to secure the surfboard, improving user stability during riding and reducing the risk of falling into the water due to foot dislocation. The handles, through their elastic connection to the rope box, provide grip assistance, further enhancing user stability. Simultaneously, arm strength helps maintain the stability of the body's center of gravity relative to the board, reducing center of gravity shift caused by wave movement. This also provides a fulcrum for subsequent grip adjustment. When carrying or transporting the surfboard, only the modular air bladders need to be deflated. The modular design ensures that damage to a single air bladder will not significantly affect the surfboard's buoyancy or balance; the remaining air bladders maintain sufficient buoyancy support. The overall buoyancy loss of the surfboard does not exceed the proportion of a single air bladder, preventing rapid sinking. Furthermore, damaged air bladders can be individually removed and replaced, reducing maintenance costs and extending the overall product lifespan. The folding coating fixing plate folds in half, causing the folding frame to fold as well, achieving a portable folding effect for the surfboard.

[0017] 2. In this invention, the downward movement of the tail fin body achieves downward pressure. This downward pressure increases the drag area, increasing the lateral drag area generated when water flows around the tail fin surface. The tail fin cuts deeper into the water, and the tail is firmly locked to the surface, effectively suppressing lateral slippage and significantly improving directional stability during straight-line tracking. The grip extension block, under the elastic potential energy of the spring rod, resets and moves towards the tension rope. At this time, the tail fin extension seat drives the tail fin body upward, reducing the lateral drag area and making the tail easier to sideslip. This significantly improves the surfboard's steering flexibility, facilitating... The user can quickly adjust direction or make small-radius turns at the start, while the lower end does not protrude from the bottom of the board or the protrusion is reduced. This effectively avoids breakage or deformation of the tail fin due to collision with hard objects during transportation and storage. Rotating the locking rod causes the tail fin body to rotate. At this time, the tail fin body rotates slightly, and the water flow impacts its surface, generating a reverse thrust. In addition to avoiding obstacles in emergency situations, the user can also make emergency changes of direction well when facing away from the wave wall and needing to cut the tip of the board back to the top of the wave, or when facing the wave wall and needing to cut the tip of the board into the wave surface.

[0018] 3. In this invention, the rotation of the telescopic linkage rod drives the rotation of the connecting linkage block, which in turn drives the rotation of the drag-increasing arc plate. This rotation of the drag-increasing arc plate causes the connecting airbag to rotate, causing one side of the airbag to protrude from the side or bottom of the board, increasing the water-facing area on that side. When the surfboard is moving quickly and making a turn, the deceleration plate on the protruding side generates asymmetrical water flow resistance, applying additional resistance torque to the turning side. This prevents the tail of the board from swinging out and becoming uncontrollable due to excessively sharp turns. Simultaneously, the increase in resistance is positively correlated with the turning demand, achieving a passive safety mechanism where the sharper the turn, the greater the automatic deceleration, reducing the risk of injury during emergency turns. To mitigate the risk of being thrown off the board due to excessive speed, the adjustment board moves, causing the deceleration arc plate to move downwards, increasing the contact area between the surfboard and the water surface. This reduces the surfboard's speed as it increases stability by pressing down on the tail fin. At the same time, the increased tail contact area provides additional hydrodynamic damping, suppressing the board's longitudinal pitching and swaying in the waves, resulting in a smoother gliding posture. Furthermore, the deceleration arc plate automatically retracts into the receiving groove at the bottom of the board when the tail fin is fully retracted, with its lower surface flush with or slightly lower than the bottom of the board. This ensures that the bottom of the surfboard remains flat during folding, storage, and transportation, without affecting portability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall internal structure of the present invention; Figure 3 This is a schematic diagram of the position structure of the tail fin telescopic seat and the rotating locking rod of the present invention; Figure 4 This is a schematic diagram of the position and structure of the rope box and tension rope of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of the structure at point A in the middle; Figure 6 This is a schematic diagram of the position and structure of the force-bearing rod and the telescopic linkage plate of the present invention; Figure 7 This is a schematic diagram showing the position and structure of the fixed ring and telescopic linkage rod of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of the structure at point B in the middle.

[0020] The meanings of the labels in the diagram are as follows: 1. Folding frame; 2. Modular airbag; 31. Folding coated fixing plate; 32. Adjustable foot pedal; 33. Elastic band; 34. Drag-reducing ramp; 35. Tail fin telescopic seat; 36. Rotating locking rod; 37. Tail fin body; 41. Rope box; 42. Rope frame; 43. Tension rope; 44. Handle; 51. Grip telescopic block; 52. Extrusion plate; 53. Spring rod one; 54. Partition slide plate; 55. Spring rod two; 56. Hydraulic oil pipe; 57. Hydraulic cylinder; 58. Linkage rod; 61. Sliding frame; 62. Spring rod three; 63. Force rod; 64. Telescopic linkage plate; 71. Fixing ring; 72. Telescopic linkage rod; 73. Connecting linkage block; 74. Fixed drag-reducing plate; 75. Drag-increasing arc plate; 76. Connecting airbag; 81. Connecting plate; 82. Adjusting plate; 83. Deceleration arc plate. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-5 One embodiment of the present invention is as follows: an airbag-type adjustable buoyancy surfboard includes a folding frame 1 and a modular airbag 2, the modular airbag 2 being mounted on the folding frame 1, and the airbag-type adjustable buoyancy surfboard further includes: Folded coating fixing plate 31; A portable modular device for improving equipment convenience and achieving modularity includes a folding modular mechanism mounted on a folding frame 1 and an auxiliary stabilizing mechanism mounted on the folding modular mechanism. Among them, the folding modular mechanism is used to improve portability by folding, while the modular airbags prevent damage to a single airbag from affecting the overall buoyancy of the device. The auxiliary stability mechanism improves the user's driving stability by increasing the grip points.

[0023] The folding modular mechanism includes a folding coating fixing plate 31 mounted on the folding frame 1, an adjusting foot pedal 32 mounted on the folding coating fixing plate 31, an elastic band 33 mounted on the adjusting foot pedal 32, a drag-reducing ramp 34 mounted on the folding coating fixing plate 31, a tail fin telescopic seat 35 mounted on the folding coating fixing plate 31, a rotating locking rod 36 mounted on the tail fin telescopic seat 35, and a tail fin body 37 mounted on the rotating locking rod 36.

[0024] The auxiliary stabilization mechanism includes a rope box 41 mounted on a folded coated fixing plate 31, a rope frame 42 mounted on the rope box 41, a tension rope 43 mounted on the rope frame 42, and a handle 44 mounted on the tension rope 43.

[0025] The surface of the elastic band 33 is provided with a protective arc plate for protecting the front of the user's feet. The protective arc plate is used to protect the user's feet and prevent the feet from falling off and landing on the board. The modular airbags 2 are connected by pipes. The pipes connecting the modular airbags 2 are equipped with one-way valves. The one-way valves are used to prevent damage to a single airbag from affecting other airbags.

[0026] In this embodiment, the user inserts the foot pedal 32 into the adjustable foot pedal and secures it with the elastic band 33, improving stability during riding and reducing the risk of falling into the water due to foot dislocation. While riding the surfboard, the user pulls the handle 44, which provides grip assistance through its elastic connection with the rope box 41, further improving riding stability. At the same time, the user's arm strength helps maintain the stability of the body's center of gravity relative to the board, reducing the center of gravity shift caused by wave turbulence. It also provides a fulcrum for subsequent grip adjustment operations. When the surfboard needs to be carried or transported, only the modular airbag 2 needs to be deflated. The modular design of the modular airbag 2 ensures that damage to a single airbag will not significantly affect the surfboard's buoyancy and balance, while the remaining airbags maintain sufficient buoyancy support. The overall buoyancy loss of the surfboard does not exceed the proportion of a single airbag, preventing the entire board from sinking rapidly. Meanwhile, the damaged air chamber can be disassembled and replaced individually, reducing maintenance costs and extending the overall service life of the product. Then, the folding coating fixing plate 31 is folded towards the middle. At this time, the folding coating fixing plate 31 folds and drives the folding frame 1 to fold, achieving a portable folding effect for the surfboard.

[0027] Please see Figures 1-8 Based on the above embodiments, in another embodiment of the present invention, the portable modular device includes a tail fin adjustment device mounted on the handle 44, the tail fin adjustment device includes a tail fin lifting mechanism mounted on the handle 44 and a tail fin rotating mechanism mounted on the tail fin lifting mechanism. The caudal fin adjustment device is used to adjust the caudal fin. The tail fin lifting mechanism is used to adjust buoyancy by raising and lowering the tail fin; The tail fin rotation mechanism is used to achieve stability and flexibility during driving by adjusting the angle of the tail fin.

[0028] The tail fin lifting mechanism includes a handle telescopic block 51 mounted on the handle 44, a pressing plate 52 mounted on the handle telescopic block 51, a spring rod 53 mounted on the pressing plate 52, a partition slide plate 54 mounted on the handle 44, a spring rod 55 mounted on the partition slide plate 54, a hydraulic oil pipe 56 mounted on the handle 44, a hydraulic cylinder 57 mounted on the folding frame 1, and a linkage rod 58 mounted on the hydraulic cylinder 57. Among them, the surface of the grip telescopic block 51 is provided with an arc surface, which is used to fit the user's fingers to facilitate the user's force application. Spring rod 1 53 is connected to the handle 44, spring rod 2 55 is connected to the handle 44, and the end of the linkage rod 58 away from the hydraulic cylinder 57 is connected to the free end of the tail fin telescopic seat 35.

[0029] The tail fin rotation mechanism includes a sliding frame 61 mounted on the rope box 41, a spring rod 62 mounted on the sliding frame 61, a force-bearing rod 63 mounted on the folding coating fixing plate 31, and a telescopic linkage plate 64 mounted on the force-bearing rod 63. Among them, the sliding frame 61 is connected to the tension rope 43, the end of the spring rod 62 away from the sliding frame 61 is connected to the rope box 41, and the end of the telescopic linkage plate 64 away from the force rod 63 is connected to the rotating locking rod 36.

[0030] In this embodiment, during operation: when the user stabilizes the surfboard while it is in motion using the handle 44, and when the user needs to improve the stability of the surfboard during motion, they need to grip the handle extension block 51. Simultaneously, the handle extension block 51 adapts to different finger sizes through its elasticity, guiding the user to exert force effectively. At this time, under the user's action, the handle extension block 51 moves towards the spring rod 53. The movement of the handle extension block 51 drives the compression plate 52 to move. The movement of the compression plate 52 compresses the hydraulic oil inside the handle 44 and the compression plate 52. At this time, the hydraulic oil is forced into the hydraulic oil pipe 56 through the handle 44. 6. The hydraulic cylinder 57 is squeezed in, and at this time, the output end of the hydraulic cylinder 57 moves towards the tail fin telescopic seat 35. At this time, the linkage rod 58 rotates, causing the free end of the tail fin telescopic seat 35 to move downward. The downward movement of the tail fin telescopic seat 35, through the rotation of the locking rod 36, causes the tail fin body 37 to move. At this time, the downward movement of the tail fin body 37 achieves downward pressure. At this time, the downward pressure of the tail fin body 37 increases the resistance area. The lateral resistance area generated when the water flows around the tail fin surface increases, and the tail fin cuts deeper into the water. The tail is firmly locked to the water surface by the water flow, effectively suppressing the lateral slippage of the tail and greatly improving the heading stability during straight-line tracking. When the handle extension block 51 returns to its original position under the elastic potential energy of the spring rod 53 and moves towards the tension rope 43, the tail fin extension seat 35 drives the tail fin body 37 to move upward, reducing the lateral resistance area and making it easier for the tail to side-slide. This significantly improves the surfboard's steering flexibility, allowing users to quickly adjust direction or make small-radius turns during the initial stage. Simultaneously, its lower end does not protrude beyond the bottom of the board or the protrusion is reduced, effectively preventing breakage or deformation of the tail fin due to impact with hard objects during transport and storage. When the user pulls the handle 44 to the left or right with a significant amplitude, the tension rope 43 pulls one side of the sliding frame 61. After the sliding frame 61 moves a certain distance, it contacts and squeezes the force rod 63, causing it to move. At this time, the force rod 63 moves, causing the telescopic linkage plate 64 to rotate. The rotation of the telescopic linkage plate 64 causes the rotating locking rod 36 to rotate and make minor adjustments to the angle. The rotation of the rotating locking rod 36 causes the tail fin body 37 to rotate. At this time, the tail fin body 37 rotates slightly, and the water flow impacts its surface, generating a reverse thrust. At this time, in addition to avoiding obstacles in emergency situations, it can also be used to make emergency changes of direction when the user is facing away from the wave wall and needs to cut the tip of the board to the left to cut back to the top of the wave, or when the user is facing the wave wall and needs to cut the tip of the board to the right to cut into the wave surface.

[0031] Please see Figures 1-8 Based on the above embodiments, in another embodiment of the present invention, the portable modular device includes an emergency braking device mounted on the rotating latching rod 36. The emergency braking device includes an emergency balancing mechanism mounted on the rotating latching rod 36 and an emergency drag-increasing mechanism mounted on the emergency balancing mechanism. The emergency braking device is used to brake the surfboard in emergency situations. An emergency balancing mechanism is used to balance a surfboard in an emergency. The emergency drag booster is used to increase drag and reduce speed on a surfboard in emergency situations.

[0032] The emergency balancing mechanism includes a fixed ring 71 mounted on the rotating locking rod 36, a telescopic linkage rod 72 mounted on the fixed ring 71, a connecting linkage block 73 mounted on the telescopic linkage rod 72, a fixed drag-reducing plate 74 mounted on the folding frame 1, a drag-increasing arc plate 75 mounted on the fixed drag-reducing plate 74, and a connecting airbag 76 mounted on the drag-increasing arc plate 75. The surface of the fixed drag-reducing plate 74 is provided with an arc surface two, which is used to reduce the resistance caused by the water flow impact. The surface of the drag-increasing arc plate 75 is provided with an arc surface three, which is used to reduce the resistance caused by the water flow impact. The drag-increasing arc plate 75 is connected to the connecting linkage block 73.

[0033] The emergency drag-increasing mechanism includes a connecting plate 81 mounted on the tail fin body 37, an adjusting plate 82 mounted on the connecting plate 81, and a deceleration arc plate 83 mounted on the adjusting plate 82. The folded coating fixing plate 31 has an arc-shaped groove that overlaps with the deceleration arc plate 83.

[0034] In this embodiment, when the tail fin body 37 rotates slightly under the action of the telescopic linkage plate 64, the rotation of the tail fin body 37 drives the fixed ring 71 to rotate. At this time, the rotation of the fixed ring 71 drives the telescopic linkage rod 72 to rotate. Simultaneously, the telescopic linkage rod 72 adapts to the raising and lowering of the tail fin telescopic seat 35 through its own elasticity. When the telescopic linkage rod 72 rotates, it drives the connecting linkage block 73 to rotate. The rotation of the connecting linkage block 73 drives the drag-increasing arc plate 75 to rotate. At this time, the rotation of the drag-increasing arc plate 75 drives the connecting airbag 76 to rotate, so that one side of it protrudes from the side or bottom of the board, increasing the water-facing area on that side. When the surfboard moves quickly and performs a turning action, the deceleration plate on the protruding side generates asymmetrical water flow resistance, applying additional resistance torque to the turning side to prevent the tail of the board from swinging out and losing control due to excessive turning. At the same time, the increase in resistance is positively correlated with the turning demand, realizing a passive safety mechanism that automatically decelerates more as the turning is more abrupt, reducing the user's risk of injury. The risk of being thrown off the board due to excessive speed during emergency changes of direction is mitigated. Simultaneously, when the tail fin body 37 rises and falls under the action of the linkage 58, the downward movement of the tail fin body 37 causes the connecting plate 81 to move, which in turn causes the adjusting plate 82 to move. The adjusting plate 82 adapts to the rotation of the tail fin body 37. Subsequently, the movement of the adjusting plate 82 causes the deceleration arc plate 83 to move downward, increasing the contact area between the surfboard and the water surface. This reduces the speed of the surfboard while increasing stability by pressing down on the tail fin body 37. The increased tail contact area provides additional hydrodynamic damping, suppressing the longitudinal pitching and swaying of the board in the waves, resulting in a smoother gliding posture. Furthermore, the deceleration arc plate 83 automatically retracts into the receiving groove at the bottom of the board when the tail fin body 37 is fully retracted, with its lower surface flush with or slightly lower than the bottom surface of the board, ensuring that the bottom of the surfboard remains flat during folding, storage, and transport, without affecting portability.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An airbag-type adjustable buoyancy surfboard, comprising a folding frame (1) and a modular airbag (2), the modular airbag (2) being mounted on the folding frame (1), characterized in that, The airbag-type adjustable buoyancy surfboard also includes: Folded coating fixing plate (31); A portable modular device for improving device convenience and achieving modularity includes a folding modular mechanism mounted on the folding frame (1) and an auxiliary stabilizing mechanism mounted on the folding modular mechanism. The folding modular mechanism is used to improve portability through folding and to prevent damage to a single airbag from affecting the overall buoyancy of the device through modularly designed airbags. The auxiliary stabilization mechanism improves the user's driving stability by increasing the grip points.

2. The airbag-type adjustable buoyancy surfboard according to claim 1, characterized in that: The folding modular mechanism includes a folding coating fixing plate (31) mounted on the folding frame (1), an adjusting foot pedal (32) mounted on the folding coating fixing plate (31), an elastic band (33) mounted on the adjusting foot pedal (32), a drag-reducing ramp (34) mounted on the folding coating fixing plate (31), a tail fin telescopic seat (35) mounted on the folding coating fixing plate (31), a rotating locking rod (36) mounted on the tail fin telescopic seat (35), and a tail fin body (37) mounted on the rotating locking rod (36).

3. The airbag-type adjustable buoyancy surfboard according to claim 2, characterized in that: The auxiliary stabilizing mechanism includes a rope box (41) mounted on the folded coating fixing plate (31), a rope frame (42) mounted on the rope box (41), a tension rope (43) mounted on the rope frame (42), and a handle (44) mounted on the tension rope (43).

4. The airbag-type adjustable buoyancy surfboard according to claim 3, characterized in that: The surface of the elastic band (33) is provided with a protective arc plate for protecting the front of the user's feet. The modular airbags (2) are connected by pipes, and a one-way valve is provided inside the pipes connecting the modular airbags (2).

5. The airbag-type adjustable buoyancy surfboard according to claim 4, characterized in that: The portable modular device includes a tail fin adjustment device mounted on the handle (44), the tail fin adjustment device including a tail fin lifting mechanism mounted on the handle (44) and a tail fin rotating mechanism mounted on the tail fin lifting mechanism; The tail fin adjustment device is used to adjust the tail fin. The tail fin lifting mechanism is used to adjust buoyancy by raising and lowering the tail fin; The tail fin rotation mechanism is used to achieve stability and flexibility during driving by adjusting the angle of the tail fin.

6. The airbag-type adjustable buoyancy surfboard according to claim 5, characterized in that: The tail fin lifting mechanism includes a handle telescopic block (51) mounted on the handle (44), a compression plate (52) mounted on the handle telescopic block (51), a spring rod (53) mounted on the compression plate (52), a partition slide plate (54) mounted on the handle (44), a spring rod (55) mounted on the partition slide plate (54), a hydraulic oil pipe (56) mounted on the handle (44), a hydraulic cylinder (57) mounted on the folding frame (1), and a linkage rod (58) mounted on the hydraulic cylinder (57). The surface of the grip telescopic block (51) is provided with an arc surface, the spring rod one (53) is connected to the handle (44), the spring rod two (55) is connected to the handle (44), and the end of the linkage rod (58) away from the hydraulic cylinder (57) is connected to the free end of the tail fin telescopic seat (35).

7. The airbag-type adjustable buoyancy surfboard according to claim 2 or 6, characterized in that: The tail fin rotation mechanism includes a sliding frame (61) mounted on the rope box (41), a spring rod (62) mounted on the sliding frame (61), a force rod (63) mounted on the folding coating fixing plate (31), and a telescopic linkage plate (64) mounted on the force rod (63). The sliding frame (61) is connected to the tension rope (43), the end of the spring rod (62) away from the sliding frame (61) is connected to the rope box (41), and the end of the telescopic linkage plate (64) away from the force rod (63) is connected to the rotating locking rod (36).

8. The airbag-type adjustable buoyancy surfboard according to claim 7, characterized in that: The portable modular device includes an emergency braking device mounted on the rotating latch rod (36), the emergency braking device including an emergency balancing mechanism mounted on the rotating latch rod (36) and an emergency drag-increasing mechanism mounted on the emergency balancing mechanism; The emergency braking device is used to brake the surfboard in an emergency. The emergency balancing mechanism is used to balance the surfboard in emergency situations. The emergency drag-increasing mechanism is used to increase drag and reduce speed of the surfboard in emergency situations.

9. The airbag-type adjustable buoyancy surfboard according to claim 8, characterized in that: The emergency balancing mechanism includes a fixed ring (71) mounted on the rotating snap rod (36), a telescopic linkage rod (72) mounted on the fixed ring (71), a connecting linkage block (73) mounted on the telescopic linkage rod (72), a fixed drag-reducing plate (74) mounted on the folding frame (1), a drag-increasing arc plate (75) mounted on the fixed drag-reducing plate (74), and a connecting airbag (76) mounted on the drag-increasing arc plate (75). The surface of the fixed drag-reducing plate (74) is provided with an arc surface two, the surface of the drag-increasing arc plate (75) is provided with an arc surface three, and the drag-increasing arc plate (75) is connected to the connecting linkage block (73).

10. The airbag-type adjustable buoyancy surfboard according to claim 9, characterized in that: The emergency drag-increasing mechanism includes a connecting plate (81) mounted on the tail fin body (37), an adjusting plate (82) mounted on the connecting plate (81), and a deceleration arc plate (83) mounted on the adjusting plate (82). The folded coating fixing plate (31) has an arc-shaped groove, which overlaps with the deceleration arc plate (83).

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