JPS627036B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an outboard motor, and more particularly to a structure for preventing water from entering the engine.

Conventionally, an outboard motor includes an engine and its manual starter in a cowling, and an operating member of the manual starter protrudes from a window hole formed in the cowling above a carburetor connected to the engine or an intake passage to the carburetor. There are those who support

This outboard motor seals the support part of the operating member of the manual starter to prevent water from entering the cowling, but this seal structure is such that the cowling is removable from the main body. The structure is such that there is no problem in opening and closing operations.

Therefore, the seal may be incomplete and water may enter the cowling. However,
The support part of the operating member is located above the carburetor or the intake passage to the carburetor, and if water enters from there, the water is sucked into the intake passage by suction negative pressure, and then flows through the carburetor to the engine. There is a risk of it being inhaled.

The present invention has been made in view of the above circumstances, and its purpose is to effectively prevent water from being sucked into the engine.

An example of implementing the present invention will be explained with reference to the drawings.
is a cowling, and b and c are an engine housed in the cowling a and its manual starter.

The above cowling a is divided into an upper member (top cowling) _A1 and a lower member (bottom cowling) _A2 , which are detachably connected, and can be opened and closed by attaching and detaching the upper member _A1 . ing.

Engine b is a two-stroke engine, and 1
is the piston, 2 is the cylinder, 3 is the crankshaft, 4
is the crank chamber.

5 is a flywheel magneto connected to the end of the crankshaft 3.

6 is a carburetor, which is connected to the engine b, that is, the crank chamber 4;

The intake system of engine b introduces outside air into the cowling a from an inlet 7 provided above the rear of the cowling a, that is, the upper member _a1 , and the introduced outside air is passed through an intake passage 8 to the carburetor. 6 and from there it is supplied to engine b as an air-fuel mixture.

The intake passage 8 is formed by joining two covers 9 and 10 and connecting them to the carburetor 6, and is separated from other parts within the cowling a.

Reference numeral 11 denotes a through hole formed in the cover 10 on the right side in FIG. 1, through which outside air in the cowling a is introduced into the intake passage 8.
On the other hand, the manual starter c consists of a fixed member _c1 and a rotating member _c2 rotatably supported by the fixed member c1, and is located above the engine b, more specifically, facing the flywheel magneto 5 at the end of the crankshaft 3. It is provided.

The fixed member c ₁ is fixed to the engine b with bolts 12, and the rotating member c ₂ is connected to the crankshaft 3 so that the crankshaft 3 is rotated by its rotational movement.

13 is a wire that is an operating means for the manual starter c, and 14 is an operating member connected to the wire 13.

The wire 13 is wound around the outer periphery of the rotating member c ₂ and is pulled by the operating member 14 to rotate the rotating member c ₂ .

The operating member 14 is supported above the intake passage 8 via a support member 15, and projects outward from a rectangular window hole 16 opened in the front surface of the upper member _a1 of the cowling a.

The support member 15 is formed into a substantially rectangular plate shape and is attached and supported by the fixed member _c1 of the manual starter c, and the wire 1 is attached to the inner half of the cylindrical part 15a formed in the center of the support member 15.
3, and an operating member 14 is fitted and supported in the outer half.

17 is a cylindrical portion 15a on the outer surface of the support member 15;
This is a sealing member that is fitted and fixed to the outer periphery, and is formed into a thick rectangular plate shape from a rubber material or the like, and is adapted to cover the window hole 16 from the inside. Reference numeral 18 denotes a sealing member made of a rubber material or the like fitted to the edge of the window hole 16, and the sealing member 17
The window hole 16 is sealed in close contact with the window hole 16.

The seal member 17 on the support member 15 side also functions to buffer vibrations transmitted from the engine b to the support member 15.

However, in such an outboard motor, the manual starter c
The support part of the operating member 14, specifically the support member 15
a seal member 17 for sealing between the window hole 16 and the window hole 16;
A guide member 19 is provided to guide water that has entered between the cowlings 18 to the lower part of the cowling a. This guide member 19
is made of rubber material, and has a saucer-like water collection part 19.
It consists of a and a gutter-shaped drainage section.

The water collection part 19a is connected to the intake passage 8, that is, the covers 9 and 10.
The groove 20 is formed along the upper edge of the inner side.

This groove 20 is adapted to fit into a locking piece 15b formed on the lower outer periphery of the support member 15.
Due to this fitting, the guide member 19 is connected to the support member 1.
It is locked at 5.

Reference numeral 21 denotes a locking portion provided at the middle of the inner side of the water collection portion 19a, which engages with a protrusion 15c protruding from the lower portion of the outer surface of the support member 15 to position and fix the guide member 19 to the support member 15. Make it.

On the other hand, the drainage part 19b is formed to continuously protrude downward from an intermediate position on the outer side of the water collection part 19a, and is extended along the outside of the cover 9 so as to avoid the intake passage 8.

Therefore, in such an outboard motor, even if water enters the support part of the operating member 14 of the manual starter c, that is, between the seal members 17 and 18, the water is collected by the water collection part 19a of the guide member 19. From there, it is led to the lower part of the cowling a via the drainage part 19b.

The water led to the lower part of the cowling a is drained to the outside through a suitable location, for example, a hole 22 drilled in the lower surface of the lower member _a2 . Therefore, water is discharged avoiding areas where negative suction pressure acts in the intake passage 8, such as the joint between the covers 9 and 10 and the through hole 11, and the water is discharged from the engine b.
No water is inhaled.

In addition, in the above embodiment, the drainage part 19 of the guide member 19
b leads water to the lower part of the cowling a and drains it to the outside from the hole 22, but the water may be drained to the outside directly from the drainage part 19b.

Next, modified examples of the guide member 19 are shown in FIGS. 4 and 5.

In the one shown in FIG. 4, the left and right sides of the water collecting part are extended along the left and right sides of the support member 15, and water that has entered from both sides of the sealing members 17 and 18 is reliably collected. It can be guided to the bottom of cowling a.

In the one shown in FIG. 5, the water collection part 19a and the drainage part 19b are formed continuously and have the same width, thereby increasing the drainage capacity of the drainage part 19b.

Next, other embodiments are shown in FIGS. 6 and 7. This embodiment is not provided with an intake passage to the carburetor 6 as in the previous embodiments, but is configured to take in air straight from the intake opening 6a of the carburetor 6.

Further, the guide member 19 has a drainage portion 19b formed into an integral pipe shape.

Incidentally, the drainage portion 19b may be shaped like a pipe by fitting a separate pipe material therein.

The pipe-shaped drainage part 19b is located below the suction opening 6a of the carburetor 6, that is, in the cowling a.
It extends to the lower member _a2 .

Therefore, even if water enters between the sealing members 17 and 18 in this embodiment as in the previous embodiment, the water is received by the drainage portion 19a of the guide member 19, and the drainage portion 19b is drained from there. The water is guided to the lower part of the cowling a avoiding the suction opening 6a of the carburetor 6, thereby preventing water from being sucked into the engine b.

Since the present invention is configured as described above, water that has entered from the support portion of the operating member is guided by the guide member to the lower part of the cowling, avoiding the carburetor or the intake passage to the carburetor, and is guided into the intake passage and eventually into the carburetor. Water will not be sucked into the tank.

Therefore, water can be effectively prevented from being sucked into the engine.

Thus, the intended purpose can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view showing the outboard motor of the present invention;
Figure 2 is a partially cutaway () view of Figure 1;
FIG. 3 is a perspective view showing a support member and a guide member, FIGS. 4 and 5 are perspective views showing a modified example of the guide member, and FIG. 6 is a partially cutaway side view showing another embodiment.
FIG. 7 is a perspective view of the guide member. In addition, in the figure, a is the cowling, b is the engine, and c
is a manual starter, 6 is a carburetor, 8 is an intake passage, 1
4 is an operating member, 16 is a window hole, and 19 is a guide member.

Claims (1)

[Claims] 1. A ship equipped with an engine and its manual starter in a cowling, and supporting an operating member of the manual starter that protrudes from a window hole formed in the cowling above a carburetor connected to the engine or an intake passage to the carburetor. A structure in which an external engine is provided with a guide member that guides water that has entered through the support part of the operating member to the lower part of the cowling, avoiding the carburetor or the intake passage to the carburetor.