Integrated large air plug for racing boat
By designing an integrated atmospheric plug, the problems of unstable connection and complicated installation of atmospheric plugs for racing boats have been solved, achieving convenient installation, stable connection and air pressure regulation, reducing production costs and safety hazards.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEIHAI PINGHE COMPOSITE MATERIAL PROD CO LTD
- Filing Date
- 2025-05-07
- Publication Date
- 2026-05-12
AI Technical Summary
The existing atmospheric plugs used in racing boats have low connection stability, are cumbersome to install, and are prone to deformation during storage, which can block the air passage and prevent effective regulation of air pressure inside and outside the boat, increasing maintenance costs and safety hazards.
Design an integrated atmospheric plug, including a venting section, a plug head section, a straight rod section, and a positioning section, which is made by one-time injection molding. The plug head section has a conical frustum structure, and the positioning section is narrow at the top and wide at the bottom. It has a through exhaust pipe inside to ensure sealing and stability.
It achieves convenient installation and stable connection, prevents seawater intrusion, ensures air pressure balance inside and outside the ship, reduces production costs, improves production efficiency, and avoids the risk of parts falling off.
Smart Images

Figure CN224225253U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of racing boat manufacturing technology, and more specifically, to an integrated atmospheric plug for racing boats. Background Technology
[0002] Racing boats are typically designed for lightweight construction to accommodate their specific applications, while also maintaining structural strength and safety requirements. They generally employ a monohull, double-layered hull structure. When a racing boat is drying on shore, direct sunlight causes the internal air pressure to exceed the external pressure, potentially leading to bulging and cracking of the outer hull and severely impacting the structural integrity. Current technologies often incorporate vents in the hull to maintain pressure balance. However, during operation, large amounts of seawater enter the boat through these vents and penetrate the hull's layers, accelerating corrosion and shortening the boat's lifespan.
[0003] To address this issue, the applicant previously filed a Chinese patent application with publication number CN217623996U, which disclosed an atmospheric plug for racing boats, comprising an elastic plug head, a straight pull rod, and a crossbar. The elastic plug head is a conical elastic element and is fitted along the axis to the end of the straight pull rod. The crossbar has a radially arranged central hole in its middle section, which is slidably connected to the straight pull rod, and both ends of the straight pull rod have annular flanges.
[0004] The above solution has a simple overall structure, allowing for pressure regulation of the hull's internal layers simply by pushing and pulling. However, in actual use, the following problems exist: the solution uses a split design combining a hollow straight pull rod, an elastic plug, and a hollow crossbar, making installation cumbersome and resulting in low connection stability. Furthermore, due to the high hardness and low toughness of the hollow straight pull rod, it is prone to bending and deformation during the boat's storage in the boat bag, leading to blockage of the ventilation channels. This results in the internal air pressure of the boat exceeding the external air pressure when exposed to direct sunlight, potentially causing the hull to bulge and break, thus preventing the boat from regulating its internal and external air pressure, increasing maintenance costs and safety hazards. Utility Model Content
[0005] To address the aforementioned problems, the present invention provides an integrated atmospheric plug for racing boats, solving the issues of low connection stability and poor exhaust performance of existing atmospheric plugs. The plug includes a main body installed at the vent hole in the hull interlayer. The main body comprises a venting section, a plug head section, a straight rod section, and a positioning section, arranged sequentially and coaxially connected. The positioning section has a structure that is narrower at the top and wider at the bottom, with the shorter radial end connected to the straight rod section. An exhaust pipe runs through the main body. The first end of the venting section has a first exhaust port communicating with the outside, and the connection between the positioning section and the straight rod section has a second exhaust port communicating with the outside. The exhaust pipe connects the first and second exhaust ports.
[0006] Preferably, the stopper section is a conical frustum structure, and the diameter of the stopper section's cross-section decreases towards the straight rod section.
[0007] Preferably, the positioning section has symmetrically protruding barbs on both sides.
[0008] Preferably, the barb is located at the maximum radial length of the positioning segment and extends to the end of the positioning segment.
[0009] Preferably, the positioning section has a teardrop-shaped structure, and the center of the positioning section has a teardrop-shaped cavity that matches its outer contour.
[0010] Preferably, the diameter of the cross-section of the vent section gradually decreases in the direction away from the plug section.
[0011] Preferably, the plug section has arc-shaped transition sections at both ends, one arc-shaped transition section is connected to the ventilation section, and the other arc-shaped transition section is connected to the straight rod section.
[0012] Preferably, the frustum edge of the plug section has rounded corners.
[0013] Preferably, the exhaust pipe is coaxially arranged with the main body.
[0014] Preferably, the body is made of an elastic material.
[0015] The beneficial effects of this utility model are as follows: The atmospheric plug body includes a venting section, a plug head section, a straight rod section, and a positioning section arranged sequentially and coaxially connected. The plug head section cooperates with the vent hole on the hull interlayer to block it, preventing seawater from entering the hull through the vent hole during water navigation. Furthermore, the plug head section has a conical frustum structure, providing good sealing performance and easy insertion into the vent hole of the hull interlayer, making installation simple and facilitating the pulling and adjustment of the atmospheric plug body. The positioning section has a structure that is narrower at the top and wider at the bottom, used to limit the atmospheric plug body and prevent the entire atmospheric plug from falling out of the vent hole during use, ensuring the stability of the atmospheric plug during use. The body has a through-hole exhaust pipe inside, which is not easily bent and provides stable exhaust performance. In addition, the atmospheric plug body adopts a one-piece injection-molded structure, simplifying the production process, eliminating the need for additional connection processes and assembly steps, and increasing production efficiency. The one-piece structure has high stability; there are no gaps or connection points on the atmospheric plug body caused by component splicing or assembly, avoiding the risk of parts falling off due to loose connections. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this application, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a side view of the present invention;
[0019] Figure 3 for Figure 2 Sectional view at point AA;
[0020] Symbols in the diagram: 1. Ventilation section; 2. Plug section; 3. Straight rod section; 4. Positioning section; 5. First exhaust port; 6. Second exhaust port; 7. Barb; 8. Arc-shaped transition section; 9. Exhaust pipe. Detailed Implementation
[0021] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.
[0022] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0023] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0024] The present application will now describe an integrated atmospheric plug for racing boats provided in the embodiments of this application.
[0025] Please see Figures 1 to 3The integrated atmospheric plug for racing boats includes a main body, which is installed at the vent in the hull interlayer. The main body comprises a venting section 1, a plug section 2, a straight rod section 3, and a positioning section 4, arranged sequentially and coaxially connected. During installation, the venting section 1 is outside the hull, while the straight rod section 3 and positioning section 4 are inside the hull. The plug section 2 cooperates with the vent to block it, preventing seawater from entering the hull during navigation. The positioning section 4 has a structure that is narrower at the top and wider at the bottom, with the shorter radial end connected to the straight rod section 3. After installation, the positioning section 4 is located inside the hull interlayer and serves to limit the atmospheric plug body, preventing the entire atmospheric plug from falling out of the vent during use and ensuring its stability during operation. The main body has a through exhaust pipe 9. The venting section 1 has a first exhaust port 5 at its front end, which communicates with the outside. The positioning section 4 and the straight rod section 3 have a second exhaust port 6, which also communicates with the outside. The exhaust pipe 9 connects the first exhaust port 5 and the second exhaust port 6. The hull interlayer communicates with the air through the second exhaust port 6, the exhaust pipe 9, and the first exhaust port 5 to regulate the air pressure inside and outside the hull and prevent damage to the hull due to pressure differences. The exhaust pipe 9 is installed throughout the entire air plug body, making it difficult to bend and ensuring stable exhaust performance. In addition, the first exhaust port 5 has a small diameter, which, while ensuring the balance of air pressure inside and outside the hull, also limits the amount of seawater entering and prevents seawater from flowing back into the hull through the exhaust pipe 9.
[0026] During use, the atmospheric plug body is installed at the vent in the hull interlayer, ensuring a tight fit between the plug head section 2 and the vent to block seawater from entering. The positioning section 4 is located inside the hull to ensure a stable installation of the atmospheric plug. During the use of the racing boat, when the temperature inside the boat rises due to direct sunlight or other reasons, causing the internal air pressure to increase, the gas inside the boat can enter the exhaust pipe 9 through the second exhaust port 6 and then be discharged outside the boat through the first exhaust port 5, maintaining a consistent air pressure inside and outside the boat and preventing damage such as hull cracking caused by the internal air pressure being greater than the external air pressure.
[0027] In this embodiment, the atmospheric plug body adopts a one-piece injection molded structure, which does not require additional connection processes and assembly steps, resulting in high production efficiency. In addition, the one-piece structure has high stability, and there are no gaps or connection points on the atmospheric plug body caused by component splicing and assembly, avoiding the risk of parts falling off due to loose connectors.
[0028] Furthermore, the plug section 2 has a conical frustum structure, with the diameter of its cross-section decreasing towards the straight rod section 3. This conical frustum structure allows the plug section 2 to be easily inserted into the hull's interlayer vent, simplifying installation. When the position of the atmospheric plug body needs adjustment after assembly, the low friction between the conical frustum and the vent facilitates pulling the atmospheric plug body and adjusting its position. During installation or adjustment, as the plug section 2 gradually penetrates deeper into the vent, the contact area between the plug section 2 and the inner wall of the vent continuously increases, forming a tight and stable seal with high sealing performance.
[0029] Furthermore, the positioning section 4 is symmetrically provided with protruding barbs 7 on both sides. When it is necessary to pull the atmospheric plug body, the barbs 7 engage with the internal structure of the hull. When the racing boat is traveling at high speed or is subjected to external impact, the barbs 7 can prevent the atmospheric plug from falling out of the vent, thus enhancing the stability of the connection between the atmospheric plug and the vent.
[0030] Furthermore, the barb 7 is located at the maximum radial length of the positioning section 4 and extends to the end of the positioning section 4. The barb 7 utilizes the contact area between the radial length of the positioning section 4 and the internal structure of the hull to enhance the stability of the engagement and the connection strength.
[0031] In this embodiment, specifically, the positioning section 4 has a teardrop-shaped structure, and the center of the positioning section 4 has a teardrop-shaped cavity that matches its outer contour. The teardrop-shaped structure, together with the barbs 7 on both sides, can form a firm engagement with the hull, further enhancing the fixing effect; the cavity structure reduces the weight of the air plug and reduces the load on the racing boat; at the same time, the teardrop-shaped contour is adaptable to various internal hull layouts, enhancing the applicability of the product.
[0032] Specifically, the diameter of the cross-section of the ventilation section 1 gradually decreases in the direction away from the plug section 2, so as to reduce the size of the first exhaust port 5 and prevent seawater from entering the first exhaust port 5.
[0033] Please see Figure 1 In this embodiment, the plug section 2 is provided with arc-shaped transition sections 8 at both ends. One arc-shaped transition section 8 is connected to the venting section 1, and the other arc-shaped transition section 8 is connected to the straight rod section 3. The arc-shaped transition section 8 makes the connection between the plug section 2 and the venting section 1 and the straight rod section 3 smoother, which facilitates the flow and filling of materials during one-time injection molding.
[0034] Specifically, the frustum edge of plug section 2 is rounded to avoid scratching other components inside the hull.
[0035] Specifically, the exhaust pipe 9 is coaxially arranged with the main body.
[0036] Specifically, the body is made of elastic material, which can adapt to the expansion or contraction of components caused by temperature changes, ensuring that it always fits tightly to the vent, has high sealing performance, and is easy to install and disassemble, reducing the difficulty of installation and maintenance.
[0037] The method of using this utility model is as follows: the atmospheric plug body is installed at the vent hole of the ship's hull interlayer, the positioning section 4 is located inside the ship's hull, and the venting section 1 is located outside the ship's hull, so that the plug head section 2 fits tightly with the vent hole and blocks the vent hole.
[0038] In this invention, the atmospheric plug body comprises a venting section 1, a plug section 2, a straight rod section 3, and a positioning section 4, arranged sequentially and coaxially connected. The plug section 2 cooperates with the vent hole on the hull interlayer to block it, preventing seawater from entering the hull during navigation. The plug section 2 has a conical frustum structure, providing good sealing and allowing for easy insertion into the vent hole of the hull interlayer. Installation is simple, and the atmospheric plug body can be easily pulled and its position adjusted. The positioning section 4 has a structure that is narrower at the top and wider at the bottom, used to limit the atmospheric plug body and prevent the entire atmospheric plug from falling out of the vent hole during use, ensuring its stability. The body has a through-hole exhaust pipe 9 inside, which is not easily bent and provides stable exhaust performance. In addition, the atmospheric plug body adopts a one-piece injection molding structure, which simplifies the production process, eliminates the need for additional connection processes and assembly steps, and improves production efficiency. The one-piece structure has high stability, as there are no gaps or connection points on the atmospheric plug body caused by splicing or assembly of parts, thus avoiding the risk of parts falling off due to loosening of connectors.
[0039] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.
Claims
1. An integrated atmospheric plug for racing boats, comprising a body, said body being installed at a vent in the hull interlayer, characterized in that: The main body includes a venting section, a plug section, a straight rod section, and a positioning section arranged sequentially and coaxially connected. The positioning section has a structure that is smaller at the top and wider at the bottom, and the end of the positioning section with a shorter radial length is connected to the straight rod section. The main body has a through exhaust pipe inside, the first end of the venting section has a first exhaust port that communicates with the outside, and the connection between the positioning section and the straight rod section has a second exhaust port that communicates with the outside. The exhaust pipe connects the first exhaust port and the second exhaust port.
2. The integrated atmospheric plug for racing boats as described in claim 1, characterized in that: The plug section is a conical frustum structure, and the diameter of the cross-section of the plug section decreases towards the straight rod section.
3. The integrated atmospheric plug for racing boats as described in claim 1, characterized in that: The positioning section has symmetrical protruding barbs on both sides.
4. The integrated atmospheric plug for racing boats as described in claim 3, characterized in that: The barb is located at the maximum radial length of the positioning segment and extends to the end of the positioning segment.
5. The integrated atmospheric plug for racing boats as described in claim 1, characterized in that: The positioning segment has a teardrop-shaped structure, and the center of the positioning segment has a teardrop-shaped cavity that matches its outer contour.
6. The integrated atmospheric plug for racing boats as described in claim 1, characterized in that: The diameter of the cross-section of the vent section gradually decreases in the direction away from the plug section.
7. The integrated atmospheric plug for racing boats as described in claim 2, characterized in that: The plug section has arc-shaped transition sections at both ends, one of which is connected to the ventilation section, and the other of which is connected to the straight rod section.
8. The integrated atmospheric plug for racing boats as described in claim 7, characterized in that: The frustum edge of the plug section has rounded corners.
9. The integrated atmospheric plug for racing boats as described in claim 1, characterized in that: The exhaust pipe is coaxially arranged with the main body.
10. A one-piece atmospheric plug for racing boats as described in any one of claims 1-9, characterized in that: The body is made of elastic material.