JPH0413936Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention uses the blowing action of a mower to feed cut grass through a duct into the grass container from the grass input port provided in the grass container at the rear of the machine. The present invention relates to a riding type lawn mower configured to feed the lawn mower.

[Conventional technology]

Some of the above-mentioned riding lawn mowers have an air volume sensor installed in the duct from the mower to the grass container to detect whether the grass container is full of cut grass.

As a result, when the grass collection container located downstream from the air volume sensor becomes full with grass clippings, the airflow from the grass collection container becomes difficult and the air volume in the duct decreases. It is detected by the sensor and notified by a buzzer or lamp.

[The problem that the idea attempts to solve]

If an airflow sensor is installed in the duct from the mower to the grass collection container, even if the grass collection container on the lower side is full of grass clippings and the airflow is blocked, the airflow from the mower on the upper side will still flow inside the duct. The wind is blowing steadily.

Therefore, in reality, the air volume inside the duct is difficult to reduce, and there is also the risk that the grass clippings passing through the duct may adhere to the air volume sensor and prevent the sensor from operating. It may not be possible to accurately detect whether it is full.

When the airflow sensor detects that the grass collection container is full, the grass clippings may have overflowed the grass collection container and packed into the duct. In such a case, when the grass collection container is removed from the machine to throw away the grass clippings, a large amount of grass clippings will spill out from the grass collection container.

The object of the present invention is to provide a structure that can accurately detect when the grass collection container has reached a state just before the grass clippings overflow from the grass collection container.

[Means to solve the problem]

The feature of the present invention is that the riding type lawn mower as described above is configured as follows. In other words, an air exhaust passage is provided for discharging the air from the duct at least near the front of the bottom of the grass collection container or near the upper part of the rear side, and a cut grass stopping member that allows the air to pass through and stops the cut grass from passing. is provided in the air exhaust path, and an air volume sensor for detecting the amount of wind passing through the air exhaust path is provided at a position on the downstream side of the mowed grass stopper member in the air exhaust path.

[Effect]

In the case of a type in which the grass clippings from the mower are sent from the front side of the grass collecting container, if the structure is as described above, the grass clippings will accumulate from near the bottom of the rear end of the grass collecting container 7, as shown in FIG. 3, for example. I'll go. In the structure shown in FIG. 3, an air exhaust path and an air volume sensor 1 are provided at both positions near the front of the bottom of the grass collecting container 7 and near the upper part of the rear side.
This is the case where 4 and 15 are provided.

In this case, as shown in FIG. 1, for example, the air blown from the mower passes through the cut grass stopping member 16 and exits from both air exhaust ducts, so the cut grass is stopped by the cut grass stopping member 16. Therefore, the grass clippings will not adhere to the air volume sensors 14 and 15. And grass collection container 7
There is no exhaust air applied to the operator above the front of the vehicle.

Furthermore, when the grass clippings are fed into the grass collection container 7, the ventilation path begins to be blocked by the grass clippings, as shown in FIG. 4, for example. However, in this state, the layer of grass clippings blocking the air exhaust path is thin, so the volume of exhaust air leaving the air exhaust path does not decrease much. And, for example, the fifth
As shown in the figure, when the grass collection container 7 is almost full of grass clippings, the layer of grass clippings that blocks the ventilation path becomes sufficiently thick, so the volume of exhaust air passing through the ventilation path increases. This is detected by the airflow sensor.

In this case, as shown in FIG. 4, even before the grass collection container 7 is full of grass clippings, the ventilation path begins to be blocked by the grass clippings. Therefore, as shown in FIG. 5, even when the grass collection container 7 goes from being completely full with grass clippings overflowing to a state a little earlier,
The layer of grass clippings that blocks the ventilation path becomes sufficiently thick, and the volume of exhaust air passing through the ventilation path is significantly reduced.

Therefore, if an air exhaust path and an air volume sensor are installed as in the present invention, the air volume sensor will be able to detect when the grass collection container has reached a state just before it becomes completely full.

[Effect of idea]

As described above, by preventing grass clippings from adhering to the airflow sensor, the airflow sensor can now accurately detect when the grass collection container is just before it becomes completely full. . This makes it possible to remove the grass container from the machine and throw away the grass clippings just before the container is completely full, without spilling too much grass clippings from the container. We were able to improve the workability of post-processing of cut grass.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 2, an engine 3 is provided at the front of the aircraft supported by front wheels 1 and rear wheels 2, a control section 4 is provided at the center of the aircraft, and a mower 5 is provided between the front and rear wheels 1 and 2. The riding type lawn mower is structured so that the grass cut by the machine is sent through a duct 6 to a grass collection container 7 at the rear of the machine body.

As shown in FIG. 1, the grass collection container 7 is composed of a bottomed cylindrical main body 8 and a lid 9. A duct 6 from the mower 5 is inserted into the grass input opening 9a of the lid 9, and the lid is closed. A body 9 is fixed to the rear of the fuselage. On the other hand, the left and right portions of the main body 8 are supported by a pair of left and right guide rails (not shown) extending rearward from the rear of the fuselage, and only the main body 8 can be moved backward along the guide rails. The structure is such that the main body 8 can be rotated around the horizontal axis at a certain position, and the grass clippings inside the main body 8 can be easily taken out.

Furthermore, the main body 8 has a dustproof net 16 (corresponding to a mown grass stopper) near the front of the bottom and near the top of the rear side.
Exhaust ports 10 and 11 are opened, and an exhaust path 12 is formed in the exhaust port 10 near the front of the bottom by a guide plate so that the exhaust air is directed toward the rear of the aircraft. An air exhaust path 13 is also formed in the vicinity of the air exhaust port 11 by a guide plate so that the air is directed downward. Further, propeller-type air volume sensors 14 and 15 are installed in both the exhaust air passages 12 and 13.

The accumulation condition of grass clippings is determined by the [effect] item and the third,
As shown in Figures 4 and 5. Then, as shown in FIG. 5, when the grass collecting container 7 is almost full with cut grass,
The volume of air exiting the exhaust channels 12 and 13 decreases, and the rotational speed of the air volume sensors 14 and 15 falls below the set value, which is detected electrically and activated by a buzzer, lamp, etc. (not shown). This will alert the pilot.

[Another Embodiment] In the above-mentioned embodiment, the exhaust passages 12 and 13 and the air volume sensors 14 and 15 were provided both in the vicinity of the front of the bottom of the grass collecting container 7 and in the vicinity of the upper part of the rear side.
A structure may be adopted in which the exhaust passage and the air volume sensor are provided only near the front of the bottom or near the top of the rear side.

[Brief explanation of drawings]

The drawings show an embodiment of the riding lawn mower according to the present invention, and FIG. 1 is a longitudinal side view of the vicinity of the grass collection container, and FIG.
The figure is an overall side view of a riding lawn mower, Nos. 3, 4, and 5.
The figure is a diagram showing the accumulation of grass clippings and the state of exhaust air from the grass collecting container in the structure of the present invention. 5... Mower, 6... Duct, 7... Grass collection container, 9a... Grass inlet, 12, 13... Ventilation duct,
14, 15... Air volume sensor, 16... Grass clipping member.

Claims (1)

[Scope of utility model registration request] A riding type lawn mower configured to feed cut grass from a mower 5 into a grass collection container 7 through a duct 6 from a grass input port 9a provided in the grass collection container 7 at the rear of the machine body, An air exhaust passage 1 for discharging the air from the duct 6 to at least one of the vicinity of the front of the bottom surface of the grass collection container 7 or the vicinity of the upper part of the rear side thereof.
2 and 13, and a cut grass stopper 16 that allows wind to pass through and stops cut grass from passing, is installed in the air exhaust path 1.
2, 13, and at a position on the lower side of the cut grass stopper member 16 in the air exhaust passages 12, 13, are air volume sensors 14, 15 for detecting the volume of wind passing through the air exhaust passages 12, 13. A riding lawn mower is provided.