Kayak fin

By introducing reinforcing components, sealing cap traction rings, and locking springs into the design of the inflatable boat, the problem of easy wear and loss of the sealing cap was solved, thereby improving the strength of the hull and the airtightness of the drainage structure, and facilitating operation.

CN224491398UActive Publication Date: 2026-07-14WEIHAI SHENGFENG PLASTIC PROD CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WEIHAI SHENGFENG PLASTIC PROD CO LTD
Filing Date
2025-08-11
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

The existing drainage valve sealing cover of the rubber boat is easily damaged by impact when open, and the sealing cover is also easy to lose, which affects the efficiency of use.

Method used

A splint for inflatable boats has been designed, comprising a splint shell, reinforcing members, a sealing cover, a traction ring, a sealing ring, and a locking spring. The reinforcing members enhance the strength of the shell, the traction ring on the sealing cover prevents loss, and the locking spring locks the sealing plug to ensure airtightness and convenient operation.

Benefits of technology

The strength of the inflatable boat hull has been improved, the sealing cap has been prevented from being lost, the airtightness of the drainage structure has been ensured, and the operation has been made convenient, thus improving the efficiency of use.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224491398U_ABST
    Figure CN224491398U_ABST
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Abstract

The utility model provides a sharp kun for rubber dinghy belongs to inflatable boat technical field. Including sharp kun main part and drainage mechanism, the sharp kun main part includes sharp kun casing, the sharp kun casing meets the streamline setting, the inside of sharp kun casing front end is equipped with reinforcing part, the top of sharp kun casing is equipped with the drainage port, the drainage port is equipped with drainage mechanism, the drainage mechanism includes drainage channel, the bottom of drainage channel is conical and is closed, drainage channel fixed mounting is in the inside of sharp kun casing, the top of drainage channel is flush with the drainage port, the drainage port is equipped with the sealing cover.
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Description

Technical Field

[0001] This utility model belongs to the field of inflatable boat technology, and more specifically, it relates to a sponge for rubber boats. Background Technology

[0002] The materials used to make inflatable boats can be broadly divided into two categories: rubber inflatable boats and PVC inflatable boats. There are many types and models of inflatable boats, including military boats used by the armed forces for river and sea crossing operations; flood control boats used by the armed police for flood control and rescue; motorized boats that are designed for speed; fully manual kayaks; rafting boats for experiencing the fun of whitewater; simple-looking work boats; fishing boats for near-shore fishing, etc. When the boat is in motion, the water flow is guided from the arc-shaped transition surface of the bow into the concave opening of the bow, generating propulsion for the hull.

[0003] Publication number CN221498348U discloses a drainage cap for inflatable boats. It mainly utilizes a connecting seat, a connecting rod, and a limiting strip to allow the drainage cap to be rotated open. The connecting rod and limiting strip on the connecting seat, in conjunction with the annular tube inside the drainage cap, limit the sealing cap, maintaining the open drain outlet while preventing complete separation between the sealing cap and the drainage cap. This avoids loss due to improper placement after the sealing cap is opened, improving the practicality of the drainage cap for inflatable boats. However, with the drain outlet open, the sealing cap experiences significant impact, leading to higher wear and tear and hindering efficient use. Therefore, this paper researches and improves upon the existing structure and its shortcomings to provide a more practical drainage cap for inflatable boats. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a sponge for inflatable boats, thereby resolving the issues raised in the background art.

[0005] The purpose and effect of this utility model of rubber boat fin are achieved by the following specific technical means:

[0006] A spruce for inflatable boats includes a spruce body and a drainage mechanism. The spruce body includes a spruce shell with a streamlined design. A reinforcing member is provided inside the front end of the spruce shell. A drain outlet is provided at the top of the spruce shell. A drainage mechanism is provided at the drain outlet. The drainage mechanism includes a drainage channel with a tapered bottom end. The drainage channel is fixedly installed inside the spruce shell. The top end of the drainage channel is flush with the drain outlet. A sealing cap is provided at the drain outlet.

[0007] Furthermore, the casing is made of PVC, the reinforcing member is attached to the inner wall of the casing, and multiple sets of the reinforcing member are arranged in an array at the top of the casing. The reinforcing member is positioned to avoid the drain outlet.

[0008] The beneficial effect of adopting the above-mentioned further solution is that by setting the reinforcing members, it is easy to increase the strength of the cone shell, and at the same time, the channels formed between the reinforcing members are conducive to dispersing the impact force of water flow on the cone shell.

[0009] Furthermore, one end of the sealing cover is provided with a sealing plug, which is made of rubber and is cylindrical, and the other side of the sealing cover is provided with a spherical protrusion, through which a traction ring passes.

[0010] The beneficial effect of adopting the above-mentioned further solution is that the traction ring on the sealing cover makes it easy for users to pull out the sealing plug. At the same time, the traction ring can also be fixedly connected to the traction rope and fixedly connected to the rubber boat, which can solve the problem of the sealing plug being easily lost.

[0011] Furthermore, a sealing ring is provided at one end of the drainage channel near the conical opening, and a gasket is provided at the front end of the sealing ring.

[0012] The beneficial effect of adopting the above-mentioned further solutions is that the installation and use of sealing rings, gaskets and sealing plugs facilitates ensuring the airtightness of the drainage structure when it is closed.

[0013] Furthermore, a locking spring is provided in the drainage channel, and the locking spring is located at the front end of the washer.

[0014] The advantage of adopting the above-mentioned further solution is that by forming a barb through the locking spring, it is easy to lock the sealing plug and prevent the sealing plug from falling off.

[0015] Furthermore, the locking spring is provided with a fixing bracket at its front end, and a baffle is provided at its front end. The baffle is located outside the drain outlet, and the fixing bracket is fixedly connected to the outer ring of the locking spring.

[0016] Furthermore, a release button is movably provided at the front end of the fixing frame. The release button is hollow and conical, and its front end contacts the inner ring of the locking spring.

[0017] The beneficial effect of adopting the above-mentioned further solution is that by pressing the release button, the front end of the release button can exert pressure on the inner ring of the locking spring, thereby causing the locking spring to release the sealing plug and thus open the drainage channel.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This type of rubber boat uses a reinforced casing, which increases the strength of the casing through the addition of reinforcing components. The channels formed between the reinforcing components help disperse the impact of water flow on the casing. The traction ring on the sealing cover facilitates the removal and removal of the sealing plug by the user. The traction ring can also be used to fix a traction rope to the rubber boat, solving the problem of easy loss of the sealing plug. The installation and use of the sealing ring, washer, and sealing plug ensures the airtightness of the drainage structure when closed. The locking spring forms a barb to lock the sealing plug, preventing it from falling off. Pressing the release button causes the front of the release button to exert pressure on the inner ring of the locking spring, which in turn releases the sealing plug, opening the drainage channel. This utility model has a simple and reasonable structure, novel design, and is easy and convenient to assemble, possessing high practical value. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention.

[0021] Figure 2 This is a three-dimensional view of the unfolded structure of this utility model.

[0022] Figure 3 This is a schematic diagram of the internal structure of this utility model.

[0023] Figure 4 This is a cross-sectional view of the present invention.

[0024] Figure 5 This is the utility model Figure 4 Enlarged diagram of point A in the middle.

[0025] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0026] 100. Main body of the scimitar; 101. Shell of the scimitar; 102. Reinforcing member; 103. Drain outlet; 200. Drainage mechanism; 201. Sealing plug; 202. Sealing cover; 203. Spherical protrusion; 204. Traction ring; 205. Drainage channel; 206. Sealing ring; 207. Washer; 208. Locking spring; 209. Fixing bracket; 210. Release button. Detailed Implementation

[0027] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model. Example

[0028] As attached Figure 1 To be continued Figure 5 As shown:

[0029] This utility model provides a sponge for rubber boats, including a sponge body 100 and a drainage mechanism 200. The sponge body 100 includes a sponge shell 101, which is streamlined. A reinforcing member 102 is provided inside the front end of the sponge shell 101. A drain outlet 103 is provided at the top of the sponge shell 101. A drainage mechanism 200 is provided at the drain outlet 103. The drainage mechanism 200 includes a drainage channel 205. The bottom end of the drainage channel 205 is tapered. The drainage channel 205 is fixedly installed inside the sponge shell 101. The top end of the drainage channel 205 is flush with the drain outlet 103. A sealing cap 202 is provided at the drain outlet 103.

[0030] The shell 101 is made of PVC. The reinforcing member 102 fits into the inner wall of the shell 101. Multiple sets of reinforcing members 102 are arranged in an array at the top of the shell 101. The reinforcing members 102 are set away from the drain outlet 103. The setting of the reinforcing members 102 can increase the strength of the shell 101. At the same time, the channel formed between the reinforcing members 102 can help disperse the impact force of water flow on the shell 101.

[0031] One end of the sealing cover 202 is provided with a sealing plug 201, which is made of rubber and is cylindrical. The other side of the sealing cover 202 is provided with a spherical protrusion 203, through which a traction ring 204 passes. The traction ring 204 on the sealing cover 202 facilitates the removal and removal of the sealing plug 201 by the user. At the same time, a traction rope can be fixedly connected to the traction ring 204 and fixedly connected to the rubber boat, which can solve the problem of the sealing plug 201 being easily lost. A sealing ring 206 is provided at one end of the drainage channel 205 near the conical opening. A washer 207 is provided at the front end of the sealing ring 206. The installation and use of the sealing ring 206, washer 207 and sealing plug 201 ensure the airtightness of the drainage structure when closed. A locking spring 208 is provided inside the drainage channel 205. The locking spring 208 is located at the front end of the washer 207. The locking spring 208 forms a barb to facilitate locking the sealing plug 201 and prevent the sealing plug 201 from falling off. A fixing bracket 209 is provided at the front end of the locking spring 208. A baffle is provided at the front end of the fixing bracket 209. The baffle is located outside the drain outlet 103. The fixing bracket 209 is fixedly connected to the outer ring of the locking spring 208. A release button 210 is movably provided at the front end of the fixing bracket 209. The release button 210 is hollow and conical. The front end of the release button 210 contacts the inner ring of the locking spring 208. By pressing the release button 210, the front end of the release button 210 applies pressure to the inner ring of the locking spring 208, thereby causing the locking spring 208 to release the sealing plug 201 and open the drainage channel 205.

[0032] The specific usage and function of this embodiment are as follows:

[0033] When using this type of inflatable boat spruce, firstly, the spruce body 100 is installed on the inflatable boat. During the movement of the boat, pressing the release button 210 causes the front end of the release button 210 to exert pressure on the inner ring of the locking spring 208, thereby causing the locking spring 208 to release the sealing plug 201 and open the drainage channel 205. Water flows through the external guide of the spruce shell 101 into the interior of the spruce shell 101 and is discharged from the drain port 103, generating propulsion for the boat. The reinforcement 102 is designed to increase the strength of the spruce shell 101, and the channels formed between the reinforcement 102 help to disperse the water flow. The impact force of the casing 101 and the traction ring 204 on the sealing cover 202 make it easy for the user to pull out the sealing plug 201. At the same time, the traction ring 204 can also be fixedly connected to the traction rope and fixedly connected to the rubber boat, which can solve the problem of the sealing plug 201 being easily lost. When it is necessary to close the drain outlet 103, the sealing plug 201 is inserted into the drain channel 205. Through the installation and use of the sealing ring 206, the washer 207 and the sealing plug 201, it is easy to ensure the airtightness of the drain mechanism 200 when it is closed. At the same time, the locking spring 208 forms a barb, which facilitates the locking effect of the sealing plug 201 and prevents the sealing plug 201 from falling off.

[0034] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A kayak tip fin characterized in that The device includes a main body (100) and a drainage mechanism (200). The main body (100) includes a shell (101) which is streamlined. A reinforcing member (102) is provided inside the front end of the shell (101). A drain outlet (103) is provided at the top of the shell (101). A drainage mechanism (200) is provided at the drain outlet (103). The drainage mechanism (200) includes a drainage channel (205). The bottom end of the drainage channel (205) is tapered. The drainage channel (205) is fixedly installed inside the shell (101). The top end of the drainage channel (205) is flush with the drain outlet (103). A sealing cap (202) is provided at the drain outlet (103).

2. The kayak prow of claim 1 wherein, The shell (101) is made of PVC. The reinforcing member (102) fits into the inner wall of the shell (101). Multiple sets of the reinforcing member (102) are arranged in an array at the top of the shell (101). The reinforcing member (102) is set away from the drain outlet (103).

3. The rubber boat sponge as described in claim 1, characterized in that, The sealing cover (202) has a sealing plug (201) at one end. The sealing plug (201) is made of rubber and is cylindrical. The sealing cover (202) has a spherical protrusion (203) on the other side. A traction ring (204) passes through the spherical protrusion (203).

4. The rubber boat sponge as described in claim 1, characterized in that, A sealing ring (206) is provided at one end of the drainage channel (205) near the conical opening, and a gasket (207) is provided at the front end of the sealing ring (206).

5. The rubber boat spruce as described in claim 1, characterized in that, The drainage channel (205) is provided with a locking spring (208), which is located at the front end of the washer (207).

6. The rubber boat spruce as described in claim 5, characterized in that, The locking spring (208) has a fixing frame (209) at its front end, and a baffle is provided at the front end of the fixing frame (209). The baffle is located outside the drain outlet (103), and the fixing frame (209) is fixedly connected to the outer ring of the locking spring (208).

7. The rubber boat spruce as described in claim 6, characterized in that, The front end of the fixing frame (209) is provided with a release button (210), which is hollow and conical. The front end of the release button (210) contacts the inner ring of the locking spring (208).