JPH07144692A - Cowling structure of outboard engine - Google Patents

Abstract

PURPOSE:To facilitate the setting of a lower cowling and vice versa so easily as well as to make improvements in maintainability by constituting this lower cowling with both first and second cowling parts separably connected with each other at both sides crosswise around an engine, in a cowling structure covering this outboard engine. CONSTITUTION:In this outboard engine 10, it is covered with a lower cowling 18 to be locked to the upper part of a propulsion unit 15 and an upper cowling 19 being attached or detached to or from another cowling 18. In this case, this lower cowling 18 is composed of both first and second cowling parts 18A and 18B to be separably connected with each other at both sides crosswise (longitudinal direction) around the engine. In addition, a projection 38 of a connecting piece 37 installed in the first cowling part 18A is fitted in a hole part 40 of a connecting piece 39 installed in the second cowling part 18B, whereby they are clamped tight by means of screwing of a set screw 43. With this constitution, both these first and second cowling parts 18A and 18B are made separable at both sides crosswise around the engine, through which engine maintainability is well improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outboard motor cowling structure.

[0002]

2. Description of the Related Art Generally, an outboard motor includes an engine on an upper portion of a propulsion unit, and a lower cowling fixed to an upper portion of the propulsion unit and an upper cowling detachably attached to the lower cowling cover the engine. The engine can be protected from splashing rainwater and seawater.

[0003]

However, in the prior art, the lower cowling is a single piece and is fixed between the lower surface of the engine and the upper surface of the propulsion unit and fixed to the upper part of the propulsion unit. And extends around the bottom of the engine.

Therefore, when the engine is attached, the lower cowling cannot be removed, and the maintainability of the carburetor and the like provided in the lower portion of the engine is poor. For example,
The mounting bolt of the carburetor for the engine is located in the lower cowling, and when the carburetor is attached / detached, the tool hits the lower cowling, making it difficult to attach / detach the attaching bolt.

SUMMARY OF THE INVENTION It is an object of the present invention to facilitate the attachment and detachment of a lower cowling in a cowling structure for an outboard motor and improve maintainability.

[0006]

SUMMARY OF THE INVENTION The present invention provides a cowling structure for an outboard motor, which comprises a lower cowling and an upper cowling detachably attached to the lower cowling, the cowling covering the engine. , A first cowling portion and a second cowling portion that are separably connected to each other in both lateral directions around the engine.

[0007]

According to the present invention, there are the following actions. The lower cowling is composed of a first cowling portion and a second cowling portion that are detachably connected to each other on both sides in the lateral direction around the engine. Therefore, even when the engine is mounted, the first cowling portion and the second cowling portion can be separated on both sides in the lateral direction around the engine, whereby the lower cowling including the first cowling portion and the second cowling portion can be separated. Can be easily attached and removed around the engine.

The lower cowling can be easily removed even with the engine mounted. Therefore, the maintainability of the carburetor and the like provided under the engine is good.
For example, the carburetor mounting bolt for the engine is in the lower cowling, but when attaching or detaching this carburetor, the first cowling part around the carburetor can be removed laterally to attach the tool without hitting the lower cowling. The bolts can be removed and the first cowling can then be easily reattached laterally.

[0009]

1 is a side view showing an outboard motor according to an embodiment of the present invention, FIG. 2 is a schematic view taken along line II-II of FIG. 1, and FIG. 3 is taken along line III-III of FIG. 1. FIG. 4 is a view taken along the line IV-IV of FIG. 1, FIG. 5 is a cross-sectional view showing the mounting state of the fuel cock valve, FIG. 6 is a bottom view of FIG. 5, and FIG. FIG. 7 is a sectional view taken along line VII.

The outboard motor 10 is, as shown in FIG.
The tilt shaft 13 is attached to the clamp bracket 12 which is fixed to 1.
The swivel bracket 14 is supported so as to be able to tilt and rotate, and the propulsion unit 15 is supported for this swivel bracket 14 so that the propulsion unit 15 can be steered and rotated 360 degrees about a substantially vertical axis. By this turning rotation, the propulsion unit 1
5 can be steered between the forward steering position and the reverse steering position. The outboard motor 10 includes an engine 16 above the propulsion unit 15 as shown in FIGS.
Is transmitted to the propeller 17A via the drive shaft 17. Further, the outboard motor 10 covers the engine 16 with a lower cowling 18 fixed to the upper portion of the propulsion unit 15 and an upper cowling 19 that is attached to and detached from the lower cowling 18.

The outboard motor 10 has a steering handle 20 for applying a turning torque to the propulsion unit 15.
On the other hand, it is attached so as to be able to rotate about 180 degrees around the attachment axis 21 which is a substantially horizontal axis between the forward drive position and the reverse drive position. 1 and 2, the solid line indicates the forward steering position and the two-dot chain line indicates the reverse steering position.

The outboard motor 10 is provided with a throttle operating portion 22 at the tip of the steering handle 20. As shown in FIG. 2, the throttle operating unit 22 drives a throttle operating wire 25 via an operating shaft 23 and a pulley 24,
The throttle valve opening of the carburetor 26 included in the engine 16 can be adjusted.

As a result, the outboard motor 10 sets the steering handle 20 to the forward steering position when the propulsion unit 15 is set to the forward steering position, and at this position the steering handle 20 extends inward. The steering operation and throttle operation are performed at. Further, under the condition that the propulsion unit 15 is set to the reverse steering position, the steering handle 20
Is set to the reverse maneuvering position, and steering operation and throttle operation are performed by the manipulating handle 20 extending inside the ship at this position.

At this time, the outboard motor 10 has the steering handle 2
The throttle operation direction display section 27 is provided at a position visible to the driver under the 0 forward control state (see FIG. 3), and the throttle operation is performed at a position visible to the driver under the reverse control state (the back side of the display section 27). A direction display unit 28 is provided (see FIG. 4).

Therefore, the steering handles 20 are approximately 180 degrees apart from each other.
The throttle operation direction display portions 27, 2 are set regardless of whether they are set to the forward steering position or the reverse steering position that are rotated by one degree.
Any one of 8 is located on the front surface side of the steering wheel 20 visible to the driver to display the throttle operation direction to the driver. As a result, the driver does not lose track of the throttle operating direction, and operability is improved.

In the above outboard motor 10, as shown in FIGS. 5 and 6, a fuel tank 29 integrated with the engine 16 is arranged in the cowling, and the fuel tank 29 is vaporized. A cock valve 31 is interposed in the middle of a fuel pipe 30 extending to the side of the container 26, the valve body 32 of the cock valve 31 is fixed to the inner surface of the lower cowling 18 by a set screw 33, and the cock 34 of the cock valve 31 is fixed to the lower cowling 18. A window portion 35 provided in the lower cowling 18 is projected to the outside so that it can be operated externally.

Here, in the cock valve 31, the closing portion 32A provided in the valve main body 32 closes the gap of the window portion 35, thereby preventing water from entering through the window portion 35 and sound leakage. In addition, since the closing portion 32A of the valve body 32 and the window portion 35 have a spigot structure, the valve body 32 can be prevented from rotating when it is attached, and the above attachment can be performed by using only one set screw 33. I am trying.

However, in the above outboard motor 10, in order to ensure maintainability, the lower cowling 18 is connected to the engine 16
It is composed of a first cowling portion 18A and a second cowling portion 18B that are separably connected to each other on both sides in the lateral direction (front-rear direction). That is, the lower cowling 18 is divided into front and rear by the dividing line 36, and the divided first and second cowling portions 18A and 18B are joined at two places.
In this coupling structure, as shown in FIG. 7, the projection 38 of the coupling piece 37 provided on one first cowling portion 18A and the hole 40 of the coupling piece 39 provided on the other second cowling portion 18B.
, The coupling pieces 37 and 39 in the fitted state are temporarily fixed by a spring-like sandwiching piece 41, and a set screw 43 is screwed into a screw hole portion 42 provided in the sandwiching piece 41. Formed by wearing.

The operation of this embodiment will be described below. The first cowling portion 1 in which the lower cowling 18 is detachably connected to both sides in the lateral direction around the engine 16.
8A and the second cowling portion 18B. Therefore,
Even when the engine 16 is attached, the first cowling portion 18A and the second cowling portion 18B can be separated on both sides in the lateral direction around the engine 16, so that the first cowling portion 18A and the second cowling portion 18B can be separated from each other. The lower cowling 18 can be easily attached and detached around the engine 16.

Even when the engine 16 is attached, the lower cowling 18 can be easily removed. Therefore, the carburetor 26 provided under the engine 16
Good maintainability. For example, the mounting bolts for the carburetor 26 to the engine 16 may be in the lower cowling 18. When attaching and detaching the vaporizer 26, the vaporizer 26
If the surrounding first cowling portion 18A is laterally removed,
The tool can remove the mounting bolt without hitting the lower cowling 18, and the first cowling portion 18A can then be easily remounted from the lateral direction.

[0021]

As described above, according to the present invention, in the cowling structure of the outboard motor, the lower cowling can be easily attached and detached, and maintainability can be improved.

[Brief description of drawings]

FIG. 1 is a side view showing an outboard motor according to an embodiment of the present invention.

FIG. 2 is a schematic view taken along the line II-II in FIG.

FIG. 3 is a view taken along the line III-III in FIG.

FIG. 4 is a view taken along the line IV-IV in FIG.

FIG. 5 is a cross-sectional view showing a mounted state of a fuel cock valve.

FIG. 6 is a bottom view of FIG.

FIG. 7 is a sectional view taken along line VII-VII of FIG.

[Explanation of symbols]

 10 Outboard Motor 16 Engine 18 Lower Cowling 18A First Cowling Section 18B Second Cowling Section 19 Upper Cowling

Claims (1)

[Claims] 1. A cowling structure for an outboard motor, comprising a lower cowling and an upper cowling detachably attached to the lower cowling, the cowling covering the engine.
A cowling structure for an outboard motor, wherein the lower cowling comprises a first cowling portion and a second cowling portion that are detachably connected to each other on both sides in a lateral direction around an engine.