Anti-overturning device of inflatable canoe
By incorporating adjustable weight-adding slots and air-filling frames within the inflatable kayak, the problem of capsizing caused by weight differences is solved, enhancing the stability and applicability of the inflatable kayak, especially in maintaining balance in turbulent waters, and reducing the risk of drowning and damage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-05
- Publication Date
- 2026-04-14
AI Technical Summary
Existing inflatable boats are prone to capsizing when there is a large difference in the weight of the users, and the risk of capsizing is high in turbulent water, increasing the risk of drowning.
The inflatable rowing boat is equipped with adjustable weight-adding slots and air-filled frames. The position of the weight-adding blocks is adjusted by weighing to balance the weight. In rapids, the air-filled frames and coiled airbags are used to increase the contact area with the water surface to stabilize the hull.
It effectively reduces the risk of capsizing, enhances the stability of inflatable boats under different weight combinations, and maintains balance in turbulent waters, reducing the risk of falling into the water and damage.
Smart Images

Figure CN224117485U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of inflatable equipment technology, and in particular to an anti-capsizing device for inflatable boats. Background Technology
[0002] An inflatable rowboat is a watercraft designed with an inflatable structure as its core. It typically uses an inflatable structure, making it lightweight and portable. It can be used for paddling and rafting on the ocean, as well as for flatwater travel, and is convenient to carry and store. The sides and bow of an inflatable rowboat are made of flexible hoses filled with pressurized gas. Some sections of the hull feature a wide-body design and added stabilizing fins to increase the contact area with the water and improve the boat's stability.
[0003] In the current use of inflatable boats, because the weights of users are unlikely to be exactly the same, when only two people are using the inflatable boat, but the weight difference between them is too large, the boat is prone to capsizing during use. Capsizing causes the people in the boat to suddenly fall into the water, potentially hitting rocks, branches, or other hard objects, resulting in abrasions, cuts, fractures, and other injuries. Furthermore, for those who cannot swim or whose swimming skills are not proficient, falling into the water can easily lead to panic and an inability to take timely and correct self-rescue measures, thus increasing the risk of drowning.
[0004] To address the capsizing issue caused by differences in user weight, a space can be fixed inside the inflatable boat to hold objects of varying weights. When weights are unequal, a certain amount of weight can be placed in this space, and the lighter-weight person can sit on that end, thus achieving a near-equal weight distribution at both ends of the inflatable boat. This weight balance makes the inflatable boat more stable during movement and better able to withstand external factors such as currents and waves. Even in the face of minor waves or changes in current, it maintains a stable course, reducing the risk of people falling into the water due to boat swaying.
[0005] However, in current inflatable boat usage, the boat may still capsize when encountering strong currents. Capsizing in turbulent water can cause users to be swept away or caught in whirlpools, increasing the risk of drowning. Moreover, after capsizing, users may be unable to return to the boat in time due to exhaustion or the impact of the current, leading to prolonged rescue time. Utility Model Content
[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing an anti-capsulation device for inflatable boats, which solves the problem of potential capsizing due to differences in user weight.
[0007] To achieve the above objectives, the present invention adopts the following technical solution:
[0008] An anti-capsizing device for an inflatable rowing boat includes an inflatable rowing boat body. An internal groove is formed on one side of the inflatable rowing boat body. Several lower weight-adding block slots of varying sizes are formed at the bottom of the inflatable rowing boat body at the internal groove. These lower weight-adding block slots are used to hold weight-adding blocks of different weights. A fixed amount of weight-adding blocks are placed inside the lower weight-adding block slots and then secured by the slots, thereby ensuring that the weight on both sides of the boat is essentially the same.
[0009] As a further improvement of this utility model, four handles are symmetrically fixedly connected to the top of the inflatable boat body, an inflation valve is movably connected to the top of the inflatable boat body, two winding arc strips are symmetrically fixedly connected to the upper and lower parts of the inflatable boat body at the internal groove, and two sliding grooves are symmetrically opened on both sides of the internal groove inside the inflatable boat body. The handles allow the user to grip the inflatable boat body tightly when it shakes, thus preventing the user from flying out of the inflatable boat body.
[0010] As a further improvement of this utility model, a fixed frame is fixedly connected to the top of the inner interior of the built-in groove, and a sliding frame is slidably connected to the bottom of the inner interior of the fixed frame. Sliding blocks are slidably connected to the interior of each sliding groove, and two sliding blocks are fixedly connected to the sides of the sliding frame. Several upper weight-adding block slots of varying sizes are provided at the bottom of the sliding frame, corresponding to the lower weight-adding block slot. The upper and lower weight-adding block slots can fix weight-adding blocks of different sizes, preventing them from shaking inside the inflatable rowing boat.
[0011] As a further improvement of this utility model, the fixing frame has two symmetrical anti-jamming grooves on both sides of the top of the sliding block. A connecting block is fixedly connected to the side of the sliding frame away from the inner groove, and a winding rope is fixedly connected to the side of the connecting block away from the sliding frame. The winding rope passes through the two winding arc strips from bottom to top, is wound and tightened. The winding arc strips and the winding rope can fix the sliding frame to the bottom of the inner groove, thereby preventing the sliding frame from shifting.
[0012] As a further improvement of this utility model, two air-filled frames are symmetrically and fixedly connected to both sides of the inflatable rowing boat body. Each air-filled frame has a coiled airbag fixedly connected to the side furthest from the inflatable rowing boat body. The inflatable rowing boat body, air-filled frames, and coiled airbags are all made of rubber. An inflation valve is movably connected to one end of each air-filled frame. The air-filled frames and coiled airbags can increase the buoyancy of the inflatable rowing boat body.
[0013] As a further improvement of this utility model, each of the air-filled frames is provided with a leak-proof plate at its top, and a directional groove is formed at the center of each top of the air-filled frame. An air inlet is formed at the fixing point between the air-filled frame and the curling airbag. An insertion rod is inserted through the interior of each directional groove and air inlet, and two insertion rods are respectively fixedly connected to the bottom ends of the two leak-proof plates. By removing the leak-proof plates, the gas inside the air-filled frame enters the curling airbag, inflating it and thus increasing the contact area between the inflatable boat and the water surface.
[0014] Compared with the prior art, the advantages of this utility model are as follows:
[0015] 1. Using the lower and upper weight-adding slots, users must first weigh themselves before using the inflatable rowing boat. If there is a significant weight difference, a weight-adding block of appropriate weight is placed at the top of the lower slot based on the weight difference. The lighter user then sits on the side with the weight-adding block, thus balancing the weight of the users at both ends of the boat. By weighing beforehand and placing weight-adding blocks according to the weight difference, the weight at both ends is made approximately equal, effectively reducing the possibility of tipping over. Furthermore, after balancing the weight at both ends, the center of gravity of the inflatable rowing boat is more stable, allowing it to maintain a straight course better during operation and reducing swaying and deviation. This weight-balancing method also allows the inflatable rowing boat to accommodate users with different weight combinations, whether it's a parent-child group, a couple, or a group of friends. As long as there is a weight difference, the balance problem can be solved by placing weight-adding blocks. This greatly expands the range of people who can use the inflatable rowing boat.
[0016] 2. The inflatable rowing boat utilizes an air-filled frame, a coiled air bladder, and an insertion rod. To prevent capsizing in fast-flowing water, the insertion rod is pulled out of the air inlet. This allows gas from the air-filled frame to enter the coiled air bladder, causing it to inflate. The increased inflated air bladder increases the contact area with the water surface, bringing the center of gravity closer to the water and improving overall stability. The increased contact area provides a wider support base for the inflatable boat on the water. When encountering strong currents, waves, or the user's body movements, the inflatable boat is less likely to lose balance and capsize. For waters with strong currents, reefs, or obstacles, the large contact area and low center of gravity of the boat offer better adaptability. It allows for more stable navigating of complex waters, reducing the risk of capsizing or damage due to water flow or collisions with obstacles. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0018] Figure 2 This is a three-dimensional structural diagram of the inflatable boat body, inflation valve, and winding rope in this utility model.
[0019] Figure 3 This is a three-dimensional structural diagram of the inflatable rowing boat body in this utility model.
[0020] Figure 4 This utility model Figure 3 A magnified three-dimensional structural diagram at point A in the middle.
[0021] Figure 5 This is a three-dimensional structural diagram of the fixed frame, sliding frame, and upper weight block groove in this utility model.
[0022] Figure 6 This utility model Figure 1 A cross-sectional three-dimensional structural diagram of the central air storage frame and the coiled airbag.
[0023] Figure 7 This is a three-dimensional structural diagram of the air storage frame and the curled airbag in this utility model.
[0024] In the diagram: 101. Inflatable rowing boat body; 102. Handle; 103. Inflation valve one; 104. Winding arc strip; 105. Internal groove; 106. Sliding groove; 107. Lower weight block groove; 108. Winding rope; 109. Fixing frame; 110. Sliding frame; 111. Sliding block; 112. Upper weight block groove; 113. Anti-jamming groove; 114. Connecting block; 201. Air storage frame; 202. Inflation valve two; 203. Curling airbag; 204. Leak-proof plate; 205. Insertion rod; 206. Directional groove; 207. Air inlet. Detailed Implementation
[0025] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0026] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0027] As shown in the figure, an anti-capsizing device for an inflatable rowing boat includes an inflatable rowing boat body 101, a winding arc strip 104, a lower weight block groove 107, a winding rope 108, a sliding frame 110, an upper weight block groove 112, an air storage frame 201, a coiled airbag 203, and an insertion rod 205.
[0028] In use, this invention first injects air into the inflatable rowing boat body 101 and the anti-leakage plate 204 through inflation valve 103 and inflation valve 202. Then, the user who needs to inflate the inflatable rowing boat body 101 is weighed. When the weight difference between two users is too large, an equal amount of weight is placed at the top of the downward weight block groove 107 according to the weight difference. After the weight is placed, the sliding frame 110 is pulled downward through the connecting block 114, so that the sliding block 111 moves downward along the sliding groove 106. When the upper weight block groove 112 at the bottom of the sliding frame 110 contacts the weight, the weight is fixed. Thus, when the weight difference between the two users is large, an appropriate weight is placed at the top of the downward weight block groove 107 according to the weight difference. Then, the lighter user sits on the side where the weight is placed, thereby achieving the effect of balancing the weight of the users at both ends of the inflatable rowing boat body 101. By weighing the animals in advance and placing weight blocks according to the weight difference, the weight at both ends can be made to be roughly equal, which can effectively reduce the possibility of tipping over.
[0029] After the weight-adding blocks are placed, the winding rope 108, which is fixed to the side of the sliding frame 110, is used to wind the weight-adding blocks from the bottom of the winding arc 104 upwards. After multiple turns and tightening, water can be prevented from entering the weight-adding block area. The main function of the weight-adding blocks is to balance the weight at both ends of the inflatable rowing boat body 101. If water enters the area, the moisture will increase the weight of the weight-adding blocks or change their distribution, disrupting the carefully adjusted weight balance. Moreover, water entering the weight-adding block area may cause the weight-adding blocks to rust, corrode, or be damaged, shortening their service life. Keeping the weight-adding block area dry helps maintain a dry environment in the internal groove 105 area, reducing problems such as mold growth and material aging caused by moisture.
[0030] When encountering strong currents while rowing, grasp the leak-proof plate 204 at the top of the air accumulator 201 and pull the insertion rod 205 fixed to the bottom of the leak-proof plate 204 out of the air inlet 207 through the limiting groove 206. This allows air from inside the air accumulator 201 to enter the coiled airbag 203, inflating it. The inflated coiled airbag 203, along with the inflatable rowing boat body 101, increases the contact area with the water surface. This increased contact area brings the center of gravity closer to the water, making the overall structure more stable. The increased contact area also provides a wider support base for the inflatable rowing boat body 101 on the water. When encountering strong currents, waves, or the user's body movements, the inflatable rowing boat body 101 is less likely to lose balance and capsize.
[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. An anti-capsizing device for an inflatable rowing boat, comprising an inflatable rowing boat body (101), characterized in that, The inflatable rowing boat body (101) has an internal groove (105) on one side. The inflatable rowing boat body (101) has several lower weight block grooves (107) of different sizes at the bottom of the internal groove (105). The lower weight block grooves (107) are used to place weight blocks of different weights.
2. The anti-capsizing device for an inflatable rowing boat according to claim 1, characterized in that, Four handles (102) are symmetrically fixedly connected to the top of the inflatable rowing body (101). An inflation valve (103) is movably connected to the top of the inflatable rowing body (101). Two winding arc strips (104) are symmetrically fixedly connected to the top and bottom of the inflatable rowing body (101) in the inner groove (105). Two sliding grooves (106) are symmetrically opened on both sides inside the inner groove (105) of the inflatable rowing body (101).
3. The anti-capsizing device for an inflatable rowing boat according to claim 2, characterized in that, The top of the inner end of the built-in groove (105) is fixedly connected to a fixed frame (109), the bottom of the inner end of the fixed frame (109) is slidably connected to a sliding frame (110), the inner end of the sliding groove (106) is slidably connected to a sliding block (111), the two sliding blocks (111) are fixedly connected to the side of the sliding frame (110), and the bottom end of the sliding frame (110) is provided with several upper weight block grooves (112) of different sizes corresponding to the lower weight block groove (107).
4. The anti-capsizing device for an inflatable rowing boat according to claim 3, characterized in that, The fixed frame (109) has two anti-jamming grooves (113) symmetrically opened on both sides of the top of the sliding block (111). The sliding frame (110) is fixedly connected to the side away from the inner groove (105) with a connecting block (114). The connecting block (114) is fixedly connected to the side away from the sliding frame (110) with a winding rope (108). The winding rope (108) passes through the two winding arc strips (104) from bottom to top and is wound and tied.
5. The anti-capsizing device for an inflatable rowing boat according to claim 1, characterized in that, Two air storage frames (201) are symmetrically fixedly connected to both sides of the inflatable rowing boat body (101). Each air storage frame (201) has a curled air bag (203) fixedly connected to the side away from the inflatable rowing boat body (101). The inflatable rowing boat body (101), air storage frames (201) and curled air bags (203) are all made of rubber. Each end of the air storage frame (201) is movably connected to an inflation valve (202).
6. The anti-capsizing device for an inflatable rowing boat according to claim 5, characterized in that, Each of the air storage frames (201) is provided with a leak-proof plate (204) at the top. Each of the air storage frames (201) has a directional groove (206) at the center of the top. Each of the air storage frames (201) and the curled airbag (203) is provided with an air inlet (207). An insertion rod (205) is inserted through the inside of the directional groove (206) and the air inlet (207). The two insertion rods (205) are respectively fixedly connected to the bottom of the two leak-proof plates (204).