Surfboard hydrofoil structure
By introducing an angle adjustment unit and switching mechanism into the hydrofoil structure of the surfboard, the problem of complex hydrofoil angle adjustment in the prior art has been solved, realizing quick and easy angle adjustment, improving the learning speed for beginners and the surfing performance of experienced surfers.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU BOLANG SPORTS GOODS CO LTD
- Filing Date
- 2025-09-08
- Publication Date
- 2026-06-23
AI Technical Summary
The existing hydrofoil structure of surfboards cannot quickly adjust the angle, making it difficult for beginners to get started, and even experienced surfers cannot quickly adjust the performance in different scenarios, affecting the surfing experience.
A structure comprising a hydrofoil body, a column, a crossbeam, a front wing, and a rear wing was designed. The angle adjustment unit enables rapid angle adjustment, and the switching component releases the fixed state of the fixing component, simplifying the operation process.
It enables rapid adjustment of the hydrofoil angle, reducing the difficulty of operation for beginners and enhancing the surfing experience for experienced surfers in different scenarios, thus meeting users' needs for quick adjustment.
Smart Images

Figure CN224392902U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of surfing equipment technology, specifically to a surfboard hydrofoil structure. Background Technology
[0002] The hydrofoil is an important component of a surfboard. It is usually installed on the bottom of the surfboard. When the surfboard moves on the water, the hydrofoil can use the lift of the water to lift the surfboard, reducing the contact area between the surfboard and the water surface, thereby improving surfing speed and handling performance.
[0003] In existing surfboard hydrofoil structures, the angle of the hydrofoil is mostly adjusted using bolts. This method requires loosening the bolts, adjusting the hydrofoil to the appropriate angle, and then tightening the bolts to secure it. The entire adjustment process is relatively complex and time-consuming. Moreover, the adjustment process requires the use of professional tools such as wrenches, which brings many inconveniences in outdoor surfing and other scenarios, and has obvious limitations, failing to meet users' needs for quick adjustments.
[0004] The complexity of existing adjustment methods makes it difficult for beginners to quickly adjust the hydrofoil angle to their liking, causing them to spend a lot of time on angle adjustment, which affects the learning speed and surfing experience, and also limits experienced surfers from making full use of the hydrofoil's performance in different scenarios, thus presenting limitations. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a surfboard hydrofoil structure that solves the problem that existing hydrofoil structures cannot quickly adjust the angle.
[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: A surfboard hydrofoil structure, including a hydrofoil body, wherein the hydrofoil body is composed of a column, a crossbeam, a front wing and a rear wing spliced together, and an angle adjustment unit is provided at the connection between the crossbeam and the front wing and the rear wing, wherein the angle adjustment unit includes a fixing hole, a rotating rod and a switching component;
[0007] The fixing holes are located inside the crossbeam, and from left to right, they are 20° holes, 15° holes, and 10° holes, respectively. The rotating rods are fixedly mounted on the top of the front and rear wings, respectively, and are rotatably connected to the crossbeam. A fixing component is provided inside the rotating rod, and the fixing component is movably engaged inside the fixing hole. The switching component is located on one side of the crossbeam and is connected to the fixing component. The switching component is used to release the fixing state of the fixing component, thereby adjusting the angle of the rotating rod.
[0008] Preferably, the switching component includes a protective compartment and a flip plate;
[0009] The protective compartment is fixedly mounted on one side of the crossbeam; the flip plate is hinged inside the protective compartment.
[0010] Preferably, the switching element further includes a magnetic chuck;
[0011] The magnetic accumulator is fixedly assembled inside the protective compartment. The magnetic accumulator is magnetically connected to the flip plate. A flexible pull strip is fixedly assembled on one side of the flip plate.
[0012] Preferably, the switching element further includes a push rod and a stop block;
[0013] The push rod is movably inserted into the inside of the fixing hole; the stop block is fixedly assembled inside the fixing hole, and the push rod is movably inserted into the inside of the stop block.
[0014] Preferably, the switching element further includes a locking block;
[0015] The locking block is fixedly assembled on the outer surface of the push rod, and the locking block abuts against the stop block.
[0016] Preferably, a rotating shaft is fixedly mounted inside the rotating rod, and the rotating shaft is rotatably connected to the crossbeam.
[0017] Preferably, the fixing element includes a spring and a fixing rod;
[0018] The spring is fixedly assembled inside the rotating rod; the fixing rod is slidably connected inside the rotating rod, the fixing rod is fixedly assembled with the spring, the fixing rod is movably inserted into the fixing hole, and the end of the fixing rod abuts against the end of the push rod.
[0019] Its beneficial effects are as follows;
[0020] This device features an angle adjustment unit that allows for quick release of the fixed components via a switching mechanism. The hydrofoil angle can be adjusted with simple operation, reducing adjustment time. The different angled fixing holes allow beginners to choose a suitable angle to reduce the difficulty of operation and get started quickly. Experienced users can quickly adjust the angle according to the actual situation to reduce resistance, enhance the surfing experience, and meet the needs of all users. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0023] Figure 2 This is a schematic diagram of the switching component of this utility model;
[0024] Figure 3 This is a schematic diagram of the angle adjustment unit of this utility model;
[0025] Figure 4 This is a schematic diagram of the fixing hole of this utility model;
[0026] Figure 5 This is a schematic diagram of the card block of this utility model.
[0027] In the diagram: 1. Hydrofoil body; 11. Column; 12. Crossbeam; 13. Front wing; 14. Rear wing; 2. Angle adjustment unit; 21. Fixing hole; 211. 20° hole; 212. 15° hole; 213. 10° hole; 22. Rotating rod; 23. Switching component; 231. Protective compartment; 232. Flip plate; 233. Magnetic suction plate; 234. Push rod; 235. Stop block; 236. Locking block; 24. Rotating shaft; 25. Spring; 26. Fixing rod. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0029] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.
[0030] This utility model discloses a surfboard hydrofoil structure, according to the attached... Figure 1 , 2 As shown in Figures 3 and 5, the hydrofoil body 1 is composed of a column 11, a crossbeam 12, a front wing 13 and a rear wing 14. An angle adjustment unit 2 is provided at the connection between the crossbeam 12 and the front wing 13 and the rear wing 14. The angle adjustment unit 2 includes a fixing hole 21, a rotating rod 22 and a switching component 23.
[0031] Fixing holes 21 are formed inside the crossbeam 12. From left to right, the fixing holes 21 are 20° hole 211, 15° hole 212 and 10° hole 213. Rotating rods 22 are fixedly mounted on the top of the front wing 13 and the rear wing 14 respectively. The rotating rods 22 are rotatably connected to the crossbeam 12. A fixing component is provided inside the rotating rods 22. The fixing component is movably engaged inside the fixing holes 21. Switching component 23 is provided on one side of the crossbeam 12. The switching component 23 is connected to the fixing component. The switching component 23 is used to release the fixing state of the fixing component, thereby adjusting the angle of the rotating rods 22.
[0032] The switching component 23 includes a protective chamber 231 and a flip plate 232; the protective chamber 231 is fixedly mounted on one side of the crossbeam 12; the flip plate 232 is hinged inside the protective chamber 231. The switching component 23 also includes a magnetic suction piece 233; the magnetic suction piece 233 is fixedly mounted inside the protective chamber 231 and magnetically connected to the flip plate 232; a flexible pull strip is fixedly mounted on one side of the flip plate 232. The switching component 23 also includes a push rod 234 and a stop block 235; the push rod 234 is movably inserted into the fixing hole 21; the stop block 235 is fixedly mounted inside the fixing hole 21, and the push rod 234 is movably inserted into the stop block 235. The switching component 23 also includes a locking block 236; the locking block 236 is fixedly mounted on the outer surface of the push rod 234, and the locking block 236 abuts against the stop block 235. A rotating shaft 24 is fixedly mounted inside the rotating rod 22, and the rotating shaft 24 is rotatably connected to the crossbeam 12. The fixing component includes a spring 25 and a fixing rod 26; the spring 25 is fixedly assembled inside the rotating rod 22; the fixing rod 26 is slidably connected inside the rotating rod 22, the fixing rod 26 is fixedly assembled with the spring 25, the fixing rod 26 is movably inserted into the fixing hole 21, and the end of the fixing rod 26 abuts against the end of the push rod 234.
[0033] In this embodiment, when it is necessary to adjust the angle of the front wing 13 or the rear wing 14, the flip plate 232 is first opened by the flexible pull strip, exposing the push rod 234. Then, the push rod 234 is pushed, which pushes the fixing rod 26, causing the fixing rod 26 to compress the spring 25 and exit from the current fixing hole 21, thus releasing the fixation of the rotating rod 22. Next, the front wing 13 or the rear wing 14 is rotated, causing the rotating rod 22 to rotate around the rotation axis 24. When the appropriate angle is reached, the push rod 234 is released, and under the action of the spring 25, the fixing rod 26 springs into the corresponding fixing hole 21, thus fixing the angle. Finally, the flip plate 232 is closed, and it is fixed by the magnetic suction piece 233. It should be noted that the angles of the front wing 13 and the rear wing 14 are the same.
[0034] According to the appendix Figure 1 , 4As shown, further, it includes a hydrofoil body 1, which is composed of a column 11, a crossbeam 12, a front wing 13 and a rear wing 14. An angle adjustment unit 2 is provided at the connection between the crossbeam 12 and the front wing 13 and the rear wing 14. The angle adjustment unit 2 includes a fixing hole 21, a rotating rod 22 and a switching component 23.
[0035] Fixing holes 21 are formed inside the crossbeam 12. From left to right, the fixing holes 21 are 20° hole 211, 15° hole 212 and 10° hole 213. Rotating rods 22 are fixedly mounted on the top of the front wing 13 and the rear wing 14 respectively. The rotating rods 22 are rotatably connected to the crossbeam 12. A fixing component is provided inside the rotating rods 22. The fixing component is movably engaged inside the fixing holes 21. Switching component 23 is provided on one side of the crossbeam 12. The switching component 23 is connected to the fixing component. The switching component 23 is used to release the fixing state of the fixing component, thereby adjusting the angle of the rotating rods 22.
[0036] In this embodiment, the 20° hole 211, 15° hole 212, and 10° hole 213 are used for adjustment according to specific usage scenarios. Typically, the front wing 13 and rear wing 14 are at 15°. If you are a novice, you need to adjust the front wing 13 and rear wing 14 to the 20° hole 211. Although this will bring greater drag, it can greatly increase stability. If you are an experienced user, you can adjust the front wing 13 and rear wing 14 to the 10° hole 213. This reduces the drag on the hydrofoil while sacrificing stability, thus meeting the user's needs. When the hydrofoil angle is 20°, the contact area and interaction force between the wing surface and the water flow are more significant, and the "sensitivity" of lift to changes in water flow speed is reduced. For example, beginner surfers often experience inconsistent speeds. A larger angled wing angle provides more robust lift, reducing the up-and-down bouncing of the surfboard caused by speed fluctuations and allowing the board to float more stably on the water. When the wing angle is 10°, the water flows more smoothly along the wing surface, preventing premature separation and the formation of vortices. Vortices cause a decrease in pressure behind the wing surface, creating a pressure difference with the front; the smaller the angle, the weaker the vortex and the lower the pressure drag.
[0037] 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A surfboard hydrofoil structure, comprising a hydrofoil body (1), wherein the hydrofoil body (1) is assembled from a column (11), a crossbeam (12), a front wing (13), and a rear wing (14), characterized in that, Angle adjustment units (2) are provided at the connection points between the crossbeam (12) and the front wing (13) and the rear wing (14). The angle adjustment unit (2) includes: Fixing holes (21) are provided inside the crossbeam (12). The fixing holes (21) are 20° holes (211), 15° holes (212) and 10° holes (213) from left to right. Rotary rod (22) is fixedly mounted on the top of the front wing (13) and the rear wing (14) respectively. The rotating rod (22) is rotatably connected to the crossbeam (12). The rotating rod (22) has a fixing component inside, which is movably engaged in the fixing hole (21). The switching component (23) is located on one side of the crossbeam (12). The switching component (23) is connected to the fixing component. The switching component (23) is used to release the fixing state of the fixing component and thereby adjust the angle of the rotating rod (22).
2. The surfboard hydrofoil structure according to claim 1, characterized in that, The switching element (23) includes: The protective compartment (231) is fixedly mounted on one side of the crossbeam (12); A flip plate (232) is hinged inside the protective compartment (231).
3. The surfboard hydrofoil structure according to claim 2, characterized in that, The switching element (23) also includes: A magnetic absorbing sheet (233) is fixedly assembled inside the protective chamber (231). The magnetic absorbing sheet (233) is magnetically connected to the flip plate (232). A flexible pull strip is fixedly assembled on one side of the flip plate (232).
4. The surfboard hydrofoil structure according to claim 2, characterized in that, The switching element (23) also includes: The push rod (234) is movably inserted into the inside of the fixing hole (21); The stop block (235) is fixedly assembled inside the fixing hole (21), and the push rod (234) is movably inserted into the inside of the stop block (235).
5. A surfboard hydrofoil structure according to claim 4, characterized in that, The switching element (23) also includes: A locking block (236) is fixedly mounted on the outer surface of the push rod (234), and the locking block (236) abuts against the stop block (235).
6. The surfboard hydrofoil structure according to claim 1, characterized in that, The rotating rod (22) is internally fixedly equipped with a rotating shaft (24), which is rotatably connected to the crossbeam (12).
7. A surfboard hydrofoil structure according to claim 4, characterized in that, The fastener includes: Spring (25), which is fixedly assembled inside the rotating rod (22); A fixed rod (26) is slidably connected inside the rotating rod (22). The fixed rod (26) is fixedly assembled with the spring (25). The fixed rod (26) is movably inserted into the fixed hole (21). The end of the fixed rod (26) abuts against the end of the push rod (234).