JPS6114623Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an air-cooled engine installed in a rice field agricultural machine, and in particular, a recoil starter case is attached to the outside of a spiral case that houses a cooling fan that rotates along the longitudinal direction of the vehicle. This invention relates to an air-cooled engine in which the lower part of the recoil starter case is sealed and an outside air intake is opened on the upper outer circumferential surface of the recoil starter case.

When an engine with the above configuration is installed in a paddy field agricultural machine such as a paddy binder or rice transplanter, the lower part of the engine becomes submerged in water during work in the paddy field, and the outside air intake that opens on the upper outer circumferential surface of the recoil starter case If water enters the inside of the recoil starter case or spiral case, this water will be stirred by the starter pulley or cooling fan and will flow out from the outside air intake, causing damage to workers and equipment behind the outside air intake. There was a problem with this.

For this reason, a method has been considered in which the outside air intake is configured with a number of shutter-like slits that prevent water from scattering from inside, but in this case, the ventilation resistance of the outside air intake becomes large and the cooling efficiency is extremely reduced. I had a problem.

The present invention was developed to solve these problems, and the purpose of this invention is to make the outside air intake port a large opening to prevent an increase in ventilation resistance, while also reliably preventing water from scattering from inside. The purpose is to provide a waterproof device that can.

Embodiments of the present invention will be described below based on the drawings.

Figure 1 is a schematic side view of a paddy binder as an example of an agricultural machine for rice fields equipped with an air-cooled gasoline engine, Figure 2 is a side view of the engine, and Figures 3 and 4.
The figures show the rear and front sides of a portion of the engine, respectively.

The paddy field binder is provided with a working device such as a reaper in front of it, a steering handle and the like behind it, and an engine main body 1 near the steering handle.

One end of the crankshaft 3 protrudes from one side of the crankcase 2 of the engine body 1, and a flyhole 5 integrally formed with a cooling fan 4 is attached to the protruding end. It is constructed so that the outside air introduced into the spiral case 6 is guided to the head cover 7 to cool the high temperature part. When the engine body 1 is mounted on a vehicle, the flyhole 5 is disposed toward one side of the vehicle, so that the cooling fan 4 rotates along the longitudinal direction of the vehicle.

Further, on the outside of the spiral case 6, there is attached a recoil starter case 9 in which a starter pulley 8 fixed to the flyhole 5 is installed. , 13 are open. Each of the outside air intake ports 10, 12, and 13 has a rectangular opening with a large area, and a dustproof net 14 is provided inside each of them.

An eave-shaped waterproof plate 15 bent in a U-shape is attached to the outside near the upper part of the mouth edge of the outside air intake port 12 on the front side circumferential surface, and water splashing upward from the inside of the outside air intake port 12 is absorbed into the engine body. The air cleaner 16 is attached to the upper part of the air cleaner 1 and is arranged so as to be placed in front of the air cleaner 16. Further, a waterproof plate 17 is attached to the outside of the outside air intake port 13 on the rear peripheral surface at a relatively large distance. This waterproof plate 17 is connected to the outside air intake port 13.
It is configured to have a slightly larger shape and is installed so as to face the intake port 13 on the entire surface, so that water splashed from inside the intake port 13 does not splash on the capretor 18, its surroundings, or the operator behind it. Further, the space between the waterproof plate 17 and the case 9 is wide open laterally, and outside air is drawn into the intake port 13 through this gap A.

According to the above configuration, even if water that has entered the case due to submergence of the lower part of the engine is scattered from the outside air intake ports 12 and 13 on the periphery by the internal rotating body, it is prevented by the waterproof plates 15 and 17. Intake ports 12 and 13 have a large opening area for engine cooling air and can prevent air from blowing onto the air cleaner 16, capletor 18 and its surroundings, as well as the rear operator.
This allows for less ventilation resistance.

In addition, 19 in the figure is the recoil starter knob, 20
is the fuel tank.

As explained above, the waterproofing device of the present invention has an outside air intake opening wide open toward the rear of the vehicle at the top of the recoil starter case, and a waterproofing plate that faces almost the entire surface thereof.
Water splashing from inside the case to the rear of the outside can be reliably received by the waterproof plate, preventing the water from splashing on the workers and equipment at the rear. In addition, since the prevention plate is installed at a distance from the outside air intake port, and outside air is taken in through the side openings at that distance, cooling air can be sucked in smoothly with little ventilation resistance, resulting in a good performance. It became possible to cool the engine.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a schematic overall side view of a binder for rice fields, Fig. 2 is an overall side view of the engine, Fig. 3 is a rear view showing a part of the engine, and Fig. 4 is a schematic side view of the binder for rice fields. FIG. 5 is a front view showing a part of the engine, and FIG. 5 is a longitudinal side view of the outside air intake location. 4...Cooling fan, 6...Spiral case,
9...Recoil starter case, 13...Outside air intake, 17...Waterproof plate.

Claims (1)

[Scope of utility model registration request] Cooling fan 4 rotating along the longitudinal direction of the vehicle
In an air-cooled engine mounted on an agricultural machine for paddy fields, a recoil starter case 9 is attached to the outside of a spiral case 6 that houses a recoil starter case 9, the lower part of the recoil starter case 9 is sealed, and an outside air intake port 13 is opened on the outer peripheral surface of the upper part of the recoil starter case 9. , the outside air intake port 13 is opened wide toward the rear of the vehicle, and a waterproof plate 17 is arranged outwardly facing the outside air intake port 13 at an appropriate distance from the outside air intake port 13. This waterproofing device for an air-cooled engine installed in an agricultural machine for paddy fields is provided with a space A that is wide open toward the right and left sides between a recoil starter case 9 and a waterproof plate 17, and allows outside air to be taken in through a gap A.