Ducted supercharged outboard engine propeller protection cover

The design of the frame structure and duct plate solves the problem of fixing the outboard propeller protective cover, reduces deformation and resistance, increases the protection area, and improves the speed and water flow contact efficiency of the ducted pressurized ship.

CN224104282UActive Publication Date: 2026-04-10ZHEJIANG CANGLONG POWER MASCH CO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG CANGLONG POWER MASCH CO
Filing Date
2025-06-06
Publication Date
2026-04-10

AI Technical Summary

Technical Problem

Existing outboard motor propeller protective covers are prone to deformation during fixing and breakage during the tightening of nuts. Ducted pressurized ships have high running resistance, insufficient protection area or impaired propeller water contact, resulting in reduced speed and efficiency.

Method used

The system adopts a skeleton structure, including a fixed water-cutting plate, a vertical water-cutting plate, a connecting water-cutting plate, and reinforcing ribs. The deformation is reduced through the cooperation of support rods and studs. The design of the duct plate and water inlet hole increases the protection area and optimizes water flow contact.

Benefits of technology

It effectively secures the protective cover, reduces deformation during tightening, lowers driving resistance, increases the propeller protection area, and improves driving speed and water flow contact efficiency.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224104282U_ABST
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Abstract

The utility model relates to the technical field of outboard engine protection equipment, and discloses a ducted supercharged outboard engine propeller protection cover which comprises a framework, a fixed water cutting plate is fixedly connected to the interior of the framework, and a vertical water cutting plate, reinforcing ribs, studs and supporting rods are fixedly connected to the interior of the framework. The fixing device is reasonable in structure, the framework can be fixed at the position of the propeller by placing the framework at the position of the propeller, tightening the connecting nut and tightening the fixing nut, the supporting rod slides in the stud in the process of tightening the connecting nut, and after the framework is fixed, the stud is tightened by tightening the limiting nut, so that the supporting rod is limited; when the protective cover is fixed to the position of the propeller, the nut needs to be screwed, the protective cover is prone to deformation in the nut screwing process, the deformed protective cover is prone to breakage after being impacted, and deformation of the framework can be reduced through movement of the supporting rod in the nut screwing process.
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Description

TECHNICAL FIELD

[0001] The utility model relates to outboard motor protection equipment technical field, concretely is a duct type supercharged outboard motor propeller protection cover. BACKGROUND

[0002] Outboard motor, as the name implies, refers to the propelling engine installed on the outside of the ship body (ship side), usually suspended on the outside of the transom, also known as outboard motor. Outboard motor has high integration, simple installation and selection, and is the preferred power for personal leisure and entertainment dinghies, and is also widely used in commercial operation and government law enforcement fields; Outboard motor is mainly composed of engine, transmission parts, steering, suspension device and propeller (screw propeller). It has the characteristics of compact structure, light weight, easy disassembly, simple operation, low noise, etc., and is suitable for use in inland rivers, lakes and offshore. It is often used on boats, ships and bridges for performing reconnaissance, landing, crossing rivers, patrol and other tasks. It can also be used for civilian racing boats, yachts, short-distance transport ships and fishing boats. Some steering boats are equipped with various propellers for different boats and ships in empty and full load conditions.

[0003] The outboard motor propeller protection cover disclosed in Chinese utility model patent application publication No. CN218949461U, although the device sets a guard plate on the inner side of the middle part of the first inclined rod, the guard plate protects the hatch plate below the gear box, so that the propeller is more stable during rotation, the setting of the second inclined rod and the third inclined rod increases the stability of the cover body, and the protection strength is improved, but the existing device does not solve the problem that the nut needs to be tightened when the protection cover is fixed at the propeller position, the protection cover is prone to deformation during the tightening process of the nut, the protection cover after deformation is prone to breakage after being hit, the traditional protection cover is prone to generate greater resistance during the driving process of the duct type supercharged boat, which affects the driving speed of the duct type supercharged boat, and the power transmission efficiency is low, part of the protection cover usually has smaller protection area for the outboard motor propeller, so that the protection effect is poor, and part of the protection cover with larger protection area is easy to affect the contact between water and the outboard motor propeller, resulting in reduced water contact area of the outboard motor propeller and affecting normal driving. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides a duct type supercharged outboard motor propeller protection cover, which solves the problem that the protection cover is deformed when the nut is tightened after being fixed at the propeller position.

[0005] In order to achieve the above object, the utility model discloses a duct type supercharged outboard engine propeller protection cover through the following technical schemes, a framework is internally and fixedly connected with fixed cut water board, the inside fixed connection of framework has vertical cut water board, the inside fixed connection of framework has butt cut water board, the inside fixed connection of framework has reinforcing rib, the inside fixed connection of framework has stud, the surface thread of stud penetrates limit nut, the inside sliding connection of stud has support rod, one end of support rod is fixedly connected with U plate, the surface fixed connection of U plate has duct plate, the inside of duct plate is equipped with water inlet hole, the upper surface fixed connection of U plate has connecting seat, the inside thread of connecting seat penetrates and is connected with connecting bolt, the surface thread of connecting bolt penetrates and is connected with connecting nut, the inside fixed connection of framework has fixed seat, the inside fixed connection of fixed seat has fixed bolt, the surface thread of fixed bolt penetrates and is connected with fixed nut.

[0006] Optionally, the duct plate is located in the inside of the framework, the number of water inlet holes is multiple, and the water inlet holes are evenly distributed on the surface of the duct plate.

[0007] Optionally, the surface of the vertical cut water board is provided with a groove, and the vertical cut water board is fixedly connected with the U-shaped plate through the groove.

[0008] Optionally, the fixed cut water board is located at a position close to the upper part in the inside of the framework, and the butt cut water board is located at a position close to the middle part in the inside of the framework.

[0009] Optionally, the reinforcing rib is located at a position close to the lower part in the inside of the framework, one side of the vertical cut water board is provided with a fixing hole, and the vertical cut water board is fixedly connected with the fixed seat through the fixing hole.

[0010] Optionally, one side of the vertical cut water board is provided with a connecting groove close to the upper part, and the vertical cut water board is fixedly connected with one end of the fixed cut water board through the connecting groove.

[0011] Optionally, one side of the vertical cut water board is provided with a butt groove close to the lower part, and the vertical cut water board is fixedly connected with one end of the butt cut water board through the butt groove.

[0012] In summary, the utility model has the following technical effects and advantages:

[0013] 1. The utility model discloses a reasonable structure, through the skeleton is placed in the propeller position, through the connection nut is tightened, passes through the fixed nut is tightened again, can the skeleton be fixed in the propeller position, in the process of tightening the connection nut, the support rod slides in the inside of the stud, after the skeleton is fixed, through the limiting nut is tightened, makes the stud close, thereby the support rod is limited, makes it unable to move, reduced when the protective cover is fixed in the propeller position, need the nut is tightened, and in the process of nut tightening, the protective cover is easy to produce deformation, the protective cover after producing deformation is easy to break after being impacted, reaches the effect that can move through the support rod in the process of tightening the nut, reduces the deformation of skeleton.

[0014] 2. In the utility model, through the vertical cut water board can reduce the resistance of the skeleton in the process of driving the ducted booster ship, through the fixed cut water board and the butt cut water board can reduce the resistance generated when turning in the process of driving the ducted booster ship, through the reinforcing rib can increase the stability of the skeleton, reduced the traditional protective cover in the process of driving the ducted booster ship, easy to produce larger resistance, influence the driving speed of the ducted booster ship, reached the effect that can reduce the resistance through the vertical cut water board, fixed cut water board and butt cut water board, through the duct plate, can increase the protection area of the protective cover to the outboard propeller, through the water inlet hole, can increase the protection area without affecting the contact of water flow and outboard propeller, reduced the protection area of part of the protective cover to the outboard propeller is smaller, thereby the protection effect is poor, and part of the protective cover with larger protection area is easy to affect the contact of water and outboard propeller, lead to the contact area of outboard propeller with water reduces and thereby affects normal driving, reached the effect that can increase the protection area of the outboard propeller through increasing the duct plate, and the water flow can also enter the inside of the duct plate through the water inlet hole, so that the water flow contacts the outboard propeller more. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the utility model structure schematic diagram;

[0016] Figure 2 It is the skeleton structure schematic diagram of the utility model;

[0017] Figure 3 It is the stud structure schematic diagram of the utility model;

[0018] Figure 4 It is the duct plate structure schematic diagram of the utility model.

[0019] In the drawing: 1, skeleton;2, fixed cut water board;201, vertical cut water board;3, butt cut water board;301, reinforcing rib;4, stud;5, limiting nut;6, support rod;601, U-shaped plate;7, duct plate;8, water inlet hole;9, connecting seat;10, connecting bolt;11, connecting nut;12, fixed seat;13, fixed bolt;14, fixed nut. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Embodiment: refer to Figures 1-4 As shown in the figure, a duct type supercharged outboard engine propeller protection cover, including the framework 1, the inside fixed connection of framework 1 has fixed cut water plate 2, the inside fixed connection of framework 1 has vertical cut water plate 201, the inside fixed connection of framework 1 has butt cut water plate 3, the inside fixed connection of framework 1 has reinforcing rib 301, the inside fixed connection of framework 1 has stud 4, the surface of stud 4 is screwed through the limiting nut 5, the inside sliding connection of stud 4 has support rod 6, one end of support rod 6 is fixedly connected with U-shaped plate 601, the surface of U-shaped plate 601 is fixedly connected with duct plate 7, the inside of duct plate 7 is equipped with water inlet hole 8, the upper surface of U-shaped plate 601 is fixedly connected with connecting seat 9, the inside of connecting seat 9 is screwed through with connecting bolt 10, the surface of connecting bolt 10 is screwed through with connecting nut 11, the inside fixed connection of framework 1 has fixed seat 12, the inside fixed connection of fixed seat 12 has fixed bolt 13, the surface of fixed bolt 13 is screwed through with fixed nut 14.

[0022] As a preferred embodiment in the present embodiment, as Figures 1-4As shown, the inside of the framework 1 is fixedly connected with a fixed water cutting plate 2, the inside of the framework 1 is fixedly connected with a vertical water cutting plate 201, a connecting groove is formed in the position close to the upper part of one side of the vertical water cutting plate 201, the vertical water cutting plate 201 is fixedly connected with one end of the fixed water cutting plate 2 through the connecting groove, the inside of the framework 1 is fixedly connected with a butt joint water cutting plate 3, a butt joint groove is formed in the position close to the lower part of one side of the vertical water cutting plate 201, the vertical water cutting plate 201 is fixedly connected with one end of the butt joint water cutting plate 3 through the butt joint groove, the fixed water cutting plate 2 is located in the position close to the upper part of the inside of the framework 1, the butt joint water cutting plate 3 is located in the position close to the middle part of the inside of the framework 1, the inside of the framework 1 is fixedly connected with a reinforcing rib 301, the inside of the framework 1 is fixedly connected with a threaded stud 4, the surface of the threaded stud 4 is threaded and penetrates a limiting nut 5, the inside of the threaded stud 4 is slidably connected with a supporting rod 6, one end of the supporting rod 6 is fixedly connected with a U-shaped plate 601, a groove is formed in the surface of the vertical water cutting plate 201, the vertical water cutting plate 201 is fixedly connected with the U-shaped plate 601 through the groove, the surface of the U-shaped plate 601 is fixedly connected with a culvert plate 7, the culvert plate 7 is located in the inside of the framework 1, the number of water inlet holes 8 is multiple,The water inlet hole 8 is inclined, and is uniformly distributed on the surface of the duct plate 7, the inside of the duct plate 7 is provided with the water inlet hole 8, the upper surface of the U-shaped plate 601 is fixedly connected with a connecting seat 9, the inside of the connecting seat 9 is threadedly penetrated by a connecting bolt 10, the surface of the connecting bolt 10 is threadedly penetrated by a connecting nut 11, the inside of the framework 1 is fixedly connected with a fixed seat 12, the inside of the framework 1 is provided with the reinforcing rib 301 close to the lower part, one side of the vertical cut water plate 201 is provided with a fixed hole, the vertical cut water plate 201 is fixedly connected with the fixed seat 12 through the fixed hole, the inside of the fixed seat 12 is fixedly connected with a fixed bolt 13, the surface of the fixed bolt 13 is threadedly penetrated by a fixed nut 14, in the using process, the framework 1 is placed at the propeller position, the connecting nut 11 is tightened, then the fixed nut 14 is tightened, so that the framework 1 is fixed at the propeller position, in the process of tightening the connecting nut 11, the supporting rod 6 slides in the inside of the threaded column 4, after the framework 1 is fixed, the threaded column 4 is tightened by tightening the limiting nut 5, so that the supporting rod 6 is limited and cannot move, the nut needs to be tightened when the protective cover is fixed at the propeller position, the protective cover is easy to deform in the process of tightening the nut, the deformed protective cover is easy to break after being impacted, the effect that the framework 1 is deformed is reduced by moving the supporting rod 6 in the process of tightening the nut, the resistance generated by the framework 1 in the process of driving the ducted supercharged ship is reduced by the vertical cut water plate 201, the resistance generated in the process of steering in the driving process of the ducted supercharged ship is reduced by the fixed cut water plate 2 and the butt joint cut water plate 3, the stability of the framework 1 is improved by the reinforcing rib 301, the resistance generated in the driving process of the traditional protective cover is reduced, the driving speed of the ducted supercharged ship is affected, the effect that the resistance is reduced by the vertical cut water plate 201, the fixed cut water plate 2 and the butt joint cut water plate 3 is achieved, the protective area of the protective cover to the outboard propeller is increased by the duct plate 7, the water flow contacts the outboard propeller without affecting the water flow by the water inlet hole 8, the protective area of part of the protective cover to the outboard propeller is small, so that the protective effect is poor, the water flow contacts the outboard propeller without affecting the water flow by the water inlet hole 8, the protective area of part of the protective cover to the outboard propeller is large, so that the water flow contacts the outboard propeller, the driving speed of the outboard propeller is affected, the effect that the protective area of the protective cover to the outboard propeller is increased by the duct plate 7, and the water flow enters the inside of the duct plate 7 through the water inlet hole 8, so that the water flow contacts the outboard propeller more, the angle of the water inlet hole 8 is consistent with the direction of the water flow in the duct, the fluid resistance is reduced, the propulsion efficiency is improved, the fluid is rectified, the contradiction between the excessive protection of the traditional protective cover and the low efficiency and the excessive exposure and the high risk is solved.

[0023] The utility model works as follows:

[0024] In use, the skeleton 1 is fixed in the propeller position by placing the skeleton 1 in the propeller position, by tightening the connecting nut 11, and by tightening the fixing nut 14, in the process of tightening the connecting nut 11, the support rod 6 slides inside the stud 4, after the skeleton 1 is fixed, by tightening the limiting nut 5, the stud 4 is tightened, thereby limiting the support rod 6, so that it cannot move, by cutting the water plate 201, the resistance generated by the skeleton 1 during the driving process of the ducted booster ship can be reduced, by fixing the water cutting plate 2 and the butt joint water cutting plate 3, the resistance generated during the steering process of the driving process of the ducted booster ship can be reduced, by the reinforcing rib 301, the stability of the skeleton 1 can be increased, by the duct plate 7, the protection area of the protection cover for the outboard propeller can be increased, by the water inlet hole 8, the protection area can be increased without affecting the water flow and the outboard propeller.

[0025] The electrical components appearing in the text are all connected with the main controller and 220V mains electricity, and the main controller can be a conventional known device such as a computer.

[0026] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included in the protection scope of the present application.

Claims

1. A ducted supercharged outboard marine propeller protection cover comprising a skeleton (1), characterized in that: The inside of the framework (1) is fixedly connected with a fixed water cutting plate (2), the inside of the framework (1) is fixedly connected with a vertical water cutting plate (201), the inside of the framework (1) is fixedly connected with a butt joint water cutting plate (3), the inside of the framework (1) is fixedly connected with a reinforcing rib (301), the inside of the framework (1) is fixedly connected with a stud (4), the surface of the stud (4) is screwed through a limiting nut (5), the inside of the stud (4) is slidably connected with a supporting rod (6), one end of the supporting rod (6) is fixedly connected with a U-shaped plate (601), the surface of the U-shaped plate (601) is fixedly connected with a duct plate (7), the inside of the duct plate (7) is provided with a water inlet hole (8), the upper surface of the U-shaped plate (601) is fixedly connected with a connecting seat (9), the inside of the connecting seat (9) is screwed through a connecting bolt (10), the surface of the connecting bolt (10) is screwed through a connecting nut (11), the inside of the framework (1) is fixedly connected with a fixed seat (12), the inside of the fixed seat (12) is fixedly connected with a fixed bolt (13), the surface of the fixed bolt (13) is screwed through a fixed nut (14).

2. The ducted supercharged outboard marine propeller protective cover according to claim 1, wherein: The duct plate (7) is located in the inside of the framework (1), the number of the water inlet hole (8) is multiple, and they are evenly distributed on the surface of the duct plate (7).

3. The ducted supercharged outboard marine propeller protective cover according to claim 1, wherein: The surface of the vertical water cutting plate (201) is provided with a groove, and the vertical water cutting plate (201) is fixedly connected with the U-shaped plate (601) through the groove.

4. The ducted supercharged outboard marine propeller protective cover according to claim 1, wherein: The fixed water cutting plate (2) is located in the inside of the framework (1) close to the upper part, and the butt joint water cutting plate (3) is located in the inside of the framework (1) close to the middle part.

5. The ducted supercharged outboard marine propeller protective cover according to claim 1, wherein: The reinforcing rib (301) is located in the inside of the framework (1) close to the lower part, one side of the vertical water cutting plate (201) is provided with a fixed hole, and the vertical water cutting plate (201) is fixedly connected with the fixed seat (12) through the fixed hole.

6. The ducted supercharged outboard marine propeller protective cover according to claim 1, wherein: One side of the vertical water cutting plate (201) close to the upper part is provided with a connecting groove, and the vertical water cutting plate (201) is fixedly connected with one end of the fixed water cutting plate (2) through the connecting groove.

7. The ducted supercharged outboard marine propeller protective cover according to claim 1, wherein: One side of the vertical water cutting plate (201) close to the lower part is provided with a butt joint groove, and the vertical water cutting plate (201) is fixedly connected with one end of the butt joint water cutting plate (3) through the butt joint groove.

Citation Information

Patent Citations

  • Propeller protection cover of outboard motor

    CN218949461U