Gearbox assembly for outboard motor

Abstract

The utility model discloses a gearbox assembly of an outboard motor, including a shell, an anti-vortex component is arranged on the shell, and heat dissipation structures are respectively arranged on the upper side and the lower side of the anti-vortex component, the two heat dissipation structures are arranged back to back, and the two heat dissipation structures each include a plurality of heat dissipation fins, each of the heat dissipation fins is respectively arranged along the length direction of the anti-vortex component, and each of the heat dissipation fins in each heat dissipation assembly is sequentially arranged along the width direction of the anti-vortex component. The utility model adopts a heat dissipation assembly arranged on the anti-vortex component to improve the heat dissipation of the gearbox assembly, and the heat dissipation assemblies are respectively arranged on the two sides of the anti-vortex component, so that the anti-vortex component forms a concave-convex structure, thereby preventing the accumulation of debris such as mud, water plants, etc. in the water on the shell and entering the shell, so as to avoid regular disassembly of the shell for cleaning, and at the same time improve the service life of the utility model.

Description

Technical Field

[0001] The utility model relates to the technical field of outboard motors, and more specifically to a gear box assembly of an outboard motor. Background Art

[0002] An outboard motor, also known as an outboard engine, refers to a propulsion engine installed on the outside of the hull, usually suspended on the outside of the stern; wherein, the outboard motor is provided with an anti-vortex plate, which is used to prevent vortices from being generated in the water flow and affecting the use of the outboard motor.

[0003] The traditional outboard motor includes a power head, a gearbox assembly and a propeller. The power head is installed on the top of the gearbox assembly. The propeller is a propeller, which is rotatably installed outside the lower part of the gearbox assembly. The power head transmits the thrust to the propeller through the gearbox assembly to make the outboard motor work. Among them, the conventional gearbox assembly is as follows Figure 1 As shown, it includes a shell 1a, and an anti-vortex plate 2a is provided on the upper part of the shell 1a to prevent water vortexes. However, the anti-vortex plate 2a here is not provided with a heat dissipation structure, which makes the overall heat dissipation effect of the gear box assembly poor, reducing the service life of the gear box assembly. Moreover, since the anti-vortex plate is a smooth plate structure, impurities such as mud and water plants in the water are easily clogged on the anti-vortex plate or enter into the gear box assembly, resulting in the need for regular disassembly and cleaning, affecting the service life of the gear box assembly and even the outboard motor.

[0004] In view of this, the applicant conducted in-depth research on this basis, which led to the emergence of this case. Utility Model Content

[0005] The utility model aims to provide a gearbox assembly for an outboard motor, which can improve the heat dissipation of the gearbox assembly, prevent impurities in water from clogging or entering the gearbox assembly, and improve the service life of the gearbox assembly.

[0006] To achieve the above purpose, the solution of the utility model is:

[0007] A gearbox assembly for an outboard motor comprises a shell, an anti-vortex component is arranged on the shell, and heat dissipation structures are respectively arranged on the upper side and the lower side of the anti-vortex component, the two heat dissipation structures are arranged back to back, and the two heat dissipation structures each comprise a plurality of heat dissipation fins, each of the heat dissipation fins is respectively arranged along the length direction of the anti-vortex component, and each of the heat dissipation fins in each of the heat dissipation structures is arranged in sequence along the width direction of the anti-vortex component.

[0008] The width of each of the heat sinks is gradually reduced in a direction away from the vortex prevention element.

[0009] The cross section of each heat sink is in a trapezoidal shape.

[0010] The vortex prevention component is a plate-shaped structure with an inner cavity.

[0011] A cooling water channel 1 is arranged at the upper end of the shell, a cooling water channel 2 is arranged in the inner cavity, and the cooling water channel 1 and the cooling water channel 2 are connected to each other.

[0012] A water channel arranged in a serpentine shape is arranged inside the vortex prevention component, and the water channel is the second cooling water channel.

[0013] The water inlet hole of the first cooling water channel and the water outlet hole of the second cooling water channel are respectively arranged on the top of the shell.

[0014] After adopting the above structure, the utility model has the following beneficial effects:

[0015] 1. The utility model adopts a heat dissipation component arranged on the anti-vortex component to improve the heat dissipation of the gear box assembly, and the heat dissipation components are respectively arranged on the two sides of the anti-vortex component, so that the anti-vortex component forms a concave-convex structure, thereby preventing the accumulation of mud, water plants and other debris in the water on the shell and entering the inside of the shell, thereby avoiding the need to disassemble the shell regularly for cleaning, and at the same time improving the service life of the utility model.

[0016] 2. The utility model sets a second cooling water path in the inner cavity of the vortex prevention component. Combined with the first cooling water path on the shell, water flows into the vortex prevention component through internal circulation and exchanges heat with lake water or sea water, further improving the heat dissipation effect of the gear box assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the structure of a traditional gearbox assembly.

[0018] Figure 2 The utility model is a schematic diagram of the structure of the gear box assembly in the outboard motor.

[0019] Figure 3 It is a front view of the gear box assembly in the outboard motor of the utility model.

[0020] Figure 4 It is a side view of the gear box assembly in the outboard motor of the utility model.

[0021] Figure 5 for Figure 4 Sectional view of AA.

[0022] Figure 6 The utility model is a top view of the gear box assembly in the outboard motor.

[0023] In the figure:

[0024] 1a-housing; 2a-vortex prevention plate; 3a-water inlet hole; 4a-water outlet hole; 10-vortex prevention component; 20-heat sink; 30-cooling water channel 2. DETAILED DESCRIPTION

[0025] In order to further explain the technical solution of the present utility model, the present utility model is described in detail below through specific embodiments.

[0026] The invention discloses a gearbox assembly for an outboard motor, which is improved on the basis of a conventional gearbox assembly for an outboard motor.

[0027] The gearbox assembly of a conventional outboard motor includes a shell 1a, on which a cooling water circuit 1 is provided, and a water inlet hole 3a and a water outlet hole 4a are provided on the top of the shell 1a. The water inlet hole 3a is the water inlet hole of the cooling water circuit 1, and the water outlet hole 4a is the water outlet hole of the cooling water circuit 1. The pipeline arrangement of the cooling water circuit 1 and the arrangement of the water inlet and outlet holes in this embodiment are the same as those of the gearbox assembly of the conventional outboard motor, so they are not described in detail.

[0028] For the convenience of description, the orientation of the utility model during normal use is taken as the reference direction of the utility model.

[0029] The improvement of the utility model is that, Figure 2-6 As shown, the outboard motor also includes an anti-vortex component 10, the shape of which is the same as that of a conventional anti-vortex plate, and heat dissipation components are respectively provided on the upper side and the lower side of the anti-vortex component 10, and the two heat dissipation components are arranged back to back, and the structures of the two heat dissipation components are the same, so the heat dissipation component located on the upper side of the anti-vortex component 10 is taken as an example for explanation, the heat dissipation component includes a plurality of heat dissipation fins 20, the length of each heat dissipation fin 20 is arranged along the length direction of the anti-vortex component 10, and each heat dissipation fin 20 is arranged in sequence and spaced apart along the width direction of the anti-vortex component 10 to achieve heat dissipation of the anti-vortex component 10, so as to further improve the heat dissipation of the utility model, and at the same time, since the anti-vortex component 10 is formed with a concave-convex structure with grooves and protrusions staggered by each heat dissipation fin 20, it is no longer a smooth plane, so that impurities such as mud, aquatic plants in the water are not easily accumulated on the anti-vortex component 10.

[0030] Furthermore, the width of each heat sink 20 on the upper side of the above-mentioned vortex prevention member 10 is gradually reduced from bottom to top, and the width of each heat sink 20 on the lower side of the above-mentioned vortex prevention member 10 is gradually reduced from top to bottom, so that the cross section of each heat sink 20 is ladder-shaped, that is, each heat sink 20 is formed as a heat sink tooth, so that while improving the heat dissipation, it also further prevents impurities such as mud, water plants, etc. in the water from accumulating on the vortex prevention member 10. In this embodiment, each heat sink 20 is integrally connected to the side of the corresponding vortex prevention member 10.

[0031] Furthermore, the above-mentioned anti-vortex component 10 is a plate-like structure with an inner cavity, in which a cooling water channel 2 30 is arranged. The cooling water channel 2 30 is interconnected with the above-mentioned cooling water channel 1, so that the cold cutting water passes through the water inlet hole 3a, cooling water channel 1, cooling water channel 2 30, cooling water channel 1 and the water outlet hole 4a in sequence, realizing the internal circulation of the utility model, performing heat exchange, and improving the heat dissipation effect.

[0032] Preferably, the inner cavity is provided with a serpentine-shaped water channel, which is formed as the cooling water channel 2 30 . In this embodiment, the water channel is integrally cast by a conventional lost foam process.

[0033] The utility model discloses a gearbox assembly of an outboard motor, wherein heat dissipation components are respectively arranged on two side surfaces of an anti-eddy current component to increase the heat dissipation function of the anti-eddy current component, thereby improving the heat dissipation of the gearbox assembly; and the structural arrangement of each heat sink in the heat dissipation component ensures that the anti-eddy current component is not prone to accumulation of impurities in water, thereby improving the service life of the gearbox assembly.

[0034] The above is only a preferred embodiment of the present invention, and all equivalent changes and modifications made within the scope of the claims of the present utility model shall fall within the scope of the claims of the present utility model.

Claims

1. A gearbox assembly for an outboard motor, characterized in that: It includes a shell, on which an anti-vortex component is arranged, and heat dissipation structures are respectively arranged on the upper side and the lower side of the anti-vortex component, the two heat dissipation structures are arranged back to back, and the two heat dissipation structures each include a plurality of heat dissipation fins, each of the heat dissipation fins is respectively arranged along the length direction of the anti-vortex component, and each of the heat dissipation fins in each of the heat dissipation structures is arranged in sequence along the width direction of the anti-vortex component.

2. The outboard motor gearbox assembly according to claim 1, characterized in that: The width of each of the heat sinks is gradually reduced in a direction away from the vortex prevention element.

3. The outboard motor gearbox assembly according to claim 2, characterized in that: The cross section of each heat sink is in a trapezoidal shape.

4. The outboard motor gearbox assembly according to any one of claims 1 to 3, characterized in that: The vortex prevention component is a plate-shaped structure with an inner cavity.

5. The outboard motor gearbox assembly according to claim 4, characterized in that: A cooling water channel 1 is arranged at the upper end of the shell, a cooling water channel 2 is arranged in the inner cavity, and the cooling water channel 1 and the cooling water channel 2 are connected to each other.

6. The outboard motor gearbox assembly according to claim 5, characterized in that: A water channel arranged in a serpentine shape is arranged inside the vortex prevention component, and the water channel is the second cooling water channel.

7. The outboard motor gearbox assembly according to claim 5, characterized in that: The water inlet hole of the first cooling water channel and the water outlet hole of the second cooling water channel are respectively arranged on the top of the shell.

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