JP6170427B2 - Portable engine - Google Patents

Description

  The present invention relates to a portable engine.

  In recent years, portable engine generators have been provided to support outdoor activities where there is no power supply nearby. Since such a portable engine engine may be used outdoors, there is a possibility that water may enter the inside when it is raining. In order to drain the water that has entered, a portable engine generator in which a drainage channel and a drainage port are provided in a cover has been developed (for example, see Patent Document 1).

JP 2002-119008 A

  However, with the portable engine generator described above, the electrical system inside the cover may get wet by the water passing through the drainage channel.

  Then, the subject of this invention is providing the portable engine which suppresses that an electrical equipment system gets wet during drainage.

The invention according to claim 1 for solving the above-described problems is
A fuel tank for storing fuel combusted in the internal combustion engine;
An electrical system for driving the internal combustion engine;
A case body that houses the internal combustion engine, a fuel tank, and the electrical system;
In a portable engine comprising a cover portion that closes the opening of the case body,
The fuel tank protrudes so as to protrude outward from the connection position of the upper part of the case body and the cover part, and the protruding portion is arranged to face the connection position,
The electrical system is disposed below the protruding portion of the fuel tank,
Between the cover part and the fuel tank and between the protruding part and the electrical system, there is an avoidance member that avoids water that has entered the projecting position and has traveled through the protruding part from the electrical system. It is characterized by being provided.

  According to the first aspect of the present invention, since the avoidance member is disposed between the cover portion and the fuel tank and between the protruding portion and the electrical system, it has penetrated from the connecting position and has been transmitted through the protruding portion. Water can be avoided from the electrical system. Therefore, it can suppress that water splashes on an electrical equipment system.

The invention according to claim 2 is the portable engine according to claim 1,
Inside the cover part, a drainage channel is formed so as to avoid the electrical system,
The avoidance member guides water toward the drainage channel.

  According to invention of Claim 2, since water is guided to a drainage channel by an avoidance member, it can suppress that an electrical equipment system gets wet with the water before reaching a drainage channel. Moreover, since the drainage channel itself is formed so as to avoid the electrical system, it is possible to prevent the electrical system from getting wet by the water passing through the drainage channel.

The invention according to claim 3 is the portable engine according to claim 1 or 2,
The avoidance member is a cushioning material.

  According to the third aspect of the invention, since the avoidance member is the buffer material, the fuel tank can be stably held inside the case body, and vibrations can also be suppressed. And if an avoidance member is a shock absorbing material, the number of parts can also be reduced rather than the case where an exclusive member is each provided.

  ADVANTAGE OF THE INVENTION According to this invention, it can suppress that an electrical equipment system gets wet at the time of drainage.

It is explanatory drawing which shows the outline of the portable engine generator as an example of a suitable engine to which this invention is applied. It is a front view which shows the internal structure of the cover part which concerns on this embodiment. It is a fragmentary sectional view showing typically the arrangement relation of the opening and cover part in the case body concerning this embodiment.

  Embodiments of the present invention will be described below with reference to the drawings. The following is one embodiment of the present invention and does not limit the present invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows an outline of a portable engine generator as an example of a suitable engine to which the present invention is applied, in which (A) shows a state in which a side cover is attached, and (B) shows a state in which the side cover is removed. FIG.
As shown in FIG. 1B, a portable engine generator 10 of this embodiment is driven to rotate by an internal combustion engine (hereinafter referred to as an engine body) 11 such as an air-cooled gasoline engine, and the engine body 11. It has a power generator (not shown) that generates power. The engine generator 10 also includes a fuel tank 13 that stores fuel such as gasoline supplied to the engine body 11, a carburetor 14 (vaporizer) that vaporizes fuel supplied to the engine, and the like. A casing-shaped case main body 15 is provided.

The case body 15 is provided with a handshake portion 15A at the top, and an opening 15B for facilitating maintenance such as inspection and repair of the carburetor 14 and the spark plug is formed on the side of the case. A side cover 15C capable of closing 15B is provided. The side cover 15C is configured to be detachable from the case body 15.
Although not particularly limited, in the engine generator 10 of this embodiment, the engine main body 11 is disposed in a substantially central position inside the case main body 15 with the cylinder head positioned at the top. And the crankshaft (illustration omitted) is arrange | positioned in the left-right direction of the figure in the lower part of this engine main body 11 with the substantially horizontal attitude | position. For the sake of convenience, the right direction in FIG. 1 is defined as the front and the left direction in FIG. 1 is defined as the rear.
Also, a maintenance opening 15 </ b> D is provided at the front end and the rear end of the case body 15. The opening 15D is covered with a detachable cover 15E.

A power generator (not shown) is mounted on the front side of the crankshaft at the bottom of the engine body 11, and a recoil starter and a cooling fan (not shown) are mounted on the front side. The fuel tank 13 is disposed above the power generator (not shown), and a muffler (not shown) is disposed on the rear side of the engine body 11.
A fuel pump 17 for supplying fuel to the engine body 11 is provided in the case body 15 in the vicinity of the fuel tank 13 and above the recoil starter and the cooling fan, and a carburetor is disposed behind the fuel pump 17. 14 is provided. Below the fuel tank 13 and the fuel pump 17, a start end is coupled to the bottom of the fuel tank 13 and a termination is coupled to the fuel pump 17, and a fuel pipe 18 that sends fuel from the fuel tank 13 to the fuel pump 17. Is provided.

  FIG. 2 is a front view showing the internal structure of the cover portion 15E. In addition, in FIG. 2, it is the figure which looked at the cover part 15E from back.

In the cover portion 15E, a wall portion 151 extending rearward is formed over the entire circumference. The upper center 15e of the cover portion 15E protrudes rearward, and a wall portion 151 is also formed according to the shape. The wall portion 151 of the cover portion 15E comes into contact with and is connected to the opening portion 15D at the rear end portion of the case main body 15.
On the inner side of the wall portion 151 of the cover portion 15E, a concave portion that is recessed forward is formed along the wall portion 151. This recess is a drainage channel 152 for discharging water that has entered the case body 15. The water flowing through the drainage channel 152 is discharged to the outside from a drainage port (not shown) provided on the bottom plate of the case body 15. Further, in the region surrounded by the drainage channel 152 in the cover portion 15E, the electrical systems 20 and 21 for driving the engine body 11 described above are disposed. That is, the drainage channel 152 is formed so as to avoid the electrical systems 20 and 21. The electrical system 21 is covered with an internal cover 19. The inner cover 19 is an upper part on the inner side of the cover portion 15 </ b> E, is provided between the left and right drainage channels 152, and also covers a part of the rear side of the electrical system 21.
A cushioning material 30 made of a porous agent such as sponge is provided on the entire upper edge portion of the inner cover 19 and the upper portions of both side edge portions. Of the cushioning material 30, a portion provided on the upper edge portion of the inner cover 19 is referred to as a first buffer portion 31, and a portion provided on the upper portions of both side edges of the inner cover 19 is referred to as a second buffer portion 32. . The second buffer portion 32 faces the left and right drainage channels 152 in the front-rear direction.

FIG. 3 is a partial cross-sectional view schematically showing the arrangement relationship between the opening 15D and the cover 15E in the case main body 15. As shown in FIG.
As shown in FIG. 3, a protruding portion 131 is provided at the upper portion of the fuel tank 13 so as to protrude outward (forward) from the connection position R with the case main body 15 at the upper center 15e of the cover portion 15E. ing. The protruding portion 131 is opposed to the connection position R in the vertical direction. The cushioning material 30 is in contact with the lower portion of the protruding portion 131. As a result, the buffer material 30 is disposed between the cover portion 15E and the fuel tank 13 and between the protruding portion 131 and the electrical system 20.
The second buffer portion 32 of the cushioning material 30 is inclined so as to gradually go outward (forward) as it goes downward from the contact portion with the projecting portion 131, and its tip extends to the vicinity of the drainage channel 152. Exist.

Here, as shown in FIGS. 2 and 3, water has entered from the upper connection positions of the case body 15 and the cover portion 15E (including the connection position R and the connection positions R1 and R2 on both sides thereof). May end up. Specifically, water intrusion at the connecting position R is indicated by an arrow Y1, and water intrusion at the connecting positions R1, R2 is indicated by an arrow Y2.
Water that has entered from the connection position R (arrow Y1) travels along the surface of the protruding portion 131 of the fuel tank 13 (arrow Y3) and passes through the second buffer 32 from the first buffer 31 of the buffer 30 (arrow). Y4), guided to the drainage channel 152.
On the other hand, the water (arrow Y2) that has entered from the connection positions R1 and R2 passes through the second buffer portion 32 from the first buffer portion 31 of the buffer material 30 (arrow Y4) and is guided to the drainage channel 152. Thus, the water that has entered the case body 15 and the cover portion 15E is avoided from the electrical systems 20 and 21 by the cushioning material 30. That is, the buffer material 30 is an avoidance member according to the present invention.
And the water (arrow Y5) which flows through the drainage channel 152 is discharged | emitted outside from the drain outlet provided in the bottom plate.

As described above, according to the present embodiment, the cushioning material 30 that is an avoidance member is disposed between the cover portion 15E and the fuel tank 13 and between the protruding portion 131 and the electrical system 20, 21. Water that has entered from the connection position R and has been transmitted through the protruding portion 131 can be avoided from the electrical systems 20 and 21. Therefore, it can suppress that the electrical equipment systems 20 and 21 splash water.
Moreover, since water is guided to the drainage channel 152 by the buffer material 30, it is possible to prevent the electrical systems 20 and 21 from getting wet by the water before reaching the drainage channel 152. Moreover, since the drainage channel 152 itself is formed so as to avoid the electrical system 20, 21, it is possible to suppress the electrical system 20, 21 from getting wet by water passing through the drainage channel 152.
And since the avoidance member is the buffer material 30, while being able to hold | maintain the fuel tank 13 stably within the case main body 15, a vibration can also be suppressed. And if the avoidance member is the buffer material 30, the number of parts can also be reduced rather than the case where a dedicated member is provided, respectively.
Note that the present invention is not limited to the above embodiment, and can be modified as appropriate.

10 Portable engine generator 11 Engine body (internal combustion engine)
DESCRIPTION OF SYMBOLS 13 Fuel tank 15 Case main body 15D Opening part 15E Cover part 15e Upper center 19 Inner cover 20 Electrical system 21 Electrical system 30 Buffer material (avoidance member)
131 Protruding portion 151 Wall portion 152 Drainage channel R, R1, R2 Connection position

Claims (3)

A fuel tank for storing fuel combusted in the internal combustion engine;
An electrical system for driving the internal combustion engine;
A case body that houses the internal combustion engine, a fuel tank, and the electrical system;
In a portable engine comprising a cover portion that closes the opening of the case body,
The fuel tank protrudes so as to protrude outward from the connection position of the upper part of the case body and the cover part, and the protruding portion is arranged to face the connection position,
The electrical system is disposed below the protruding portion of the fuel tank,
Between the cover part and the fuel tank and between the protruding part and the electrical system, there is an avoidance member that avoids water that has entered the projecting position and has traveled through the protruding part from the electrical system. A portable engine characterized by being provided. The portable engine according to claim 1, wherein
Inside the cover part, a drainage channel is formed so as to avoid the electrical system,
The avoidance member guides water toward the drainage channel, and is a portable engine. The portable engine according to claim 1 or 2,
The portable engine, wherein the avoidance member is a cushioning material.

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