JP3147484B2 - Floor sweeper - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor cleaning vehicle, and more particularly to a main brush which rotates at the bottom of a vehicle and sweeps dust on a floor surface, a road surface, etc. (hereinafter simply referred to as a floor surface) into a dust box. The present invention relates to a floor cleaning vehicle that cleans a floor surface with an operator on board.

[0002]

2. Description of the Related Art This type of floor cleaning truck has a dust box provided on the front side of a vehicle, and dust on the floor is swept up toward the dust box with rotation of a main brush provided at the center of the bottom of the vehicle. Collected in a dust box. After a certain amount of dust is collected in the dust box, the dust is discharged from the dust box.

An air-cooled engine is used for an engine of a floor cleaning car because of its light weight and easy maintenance. The engine is provided at the rear of the vehicle body, and a driver's seat is provided on an engine hood that covers an engine room and a fuel tank. Traditionally, air cleaners have been located outside the engine hood and beside the seat. In addition, the air-cooling type cooling device uses the air in the engine room for cooling.

[0004]

In order to simplify the maintenance work, the engine hood is integrally formed so as to cover the entire rear portion of the vehicle, and when the engine hood is opened to the rear side of the vehicle, the air intake port of the air cleaner is opened. It is difficult to install on the engine hood. Therefore, in this case, the air cleaner is provided in the engine room, and the air in the engine room is taken into the air cleaner. However, since the engine room of the floor cleaning car is close to the main brush and has a simple structure different from the case of a passenger car or the like, dust generated by rotation of the main brush easily enters the engine room. Therefore, when the air in the engine room is taken into the air cleaner, there is a problem that not only frequent maintenance is required, but also the durability of the air cleaner and, consequently, the durability of the engine itself are reduced.
In addition, if the air-cooled cooling device of the air-cooled engine uses air in a dusty engine room for cooling, there is also a problem that the starter is likely to fail due to dust intrusion. In addition, there is also a problem that if the exhaust gas of the air-cooling type cooling device is exhausted below the vehicle, dust may be generated.

The present invention has been made in view of the above problems, and a first object of the present invention is to integrally form an engine hood so as to cover the entire rear portion of a vehicle and to open the engine hood to the rear of the vehicle. Even in such a case, it is an object of the present invention to provide a floor cleaning vehicle capable of taking in air with little dust into an air cleaner and improving the durability of the air cleaner and the engine.

A second object of the present invention is to provide, in addition to the above object, a floor cleaning vehicle capable of reliably preventing the exhaust of an air-cooled cooling device from causing dust.

[0007]

According to the first aspect of the present invention, there is provided a dust box which is rotated at the bottom of a vehicle to remove dust on the floor from a dust box disposed at the front of the vehicle . In a floor sweeper with an air-cooled engine covered with an engine hood, equipped with a main brush that sweeps
An air cleaner is provided in the engine room, and at least the air intake port of the air cleaner of the air intake port of the air cleaner or the air intake port of the air-cooled cooling device of the engine is disposed at a position facing the through hole provided at the rear portion of the engine hood. .

According to the second aspect of the present invention, in order to achieve the second object, in addition to the above configuration, an exhaust port of a duct for guiding air used for cooling the engine is provided at a side of the engine hood. It was arranged at a position facing the formed through hole.

[0009]

When the main brush disposed at the center of the bottom of the vehicle rotates for cleaning, dust is generated by the rotation of the main brush. Some of the generated dust also enters the engine room located at the rear of the vehicle. The amount of dust in the engine room is smaller at positions farther from the main brush, that is, at the rear side of the vehicle. External air is mainly taken into the air cleaner through a through hole provided at a rear portion of the engine hood. The air intake of the air cleaner is provided at the rear of the engine hood, which has the least amount of dust in the engine room, and faces the outside through the through holes, so that dust generated during the cleaning work enters the engine room. Even so, air with less dust is taken into the air cleaner. When the air intake of the air supply duct to the air-cooled cooling device is also arranged at a position facing the through hole, air with less dust is used for cooling the engine.

[0010] In the second aspect of the present invention, the air used for cooling the engine is discharged to the outside from the side of the engine hood. Therefore, the exhaust gas is not blown to the floor and causes dust, and the dust in the engine room is not agitated.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 2, a floor cleaning vehicle is a dust box 2 formed in a front portion of a vehicle 1 and having a substantially L-shaped side surface.
The main brush chamber 3 is provided at the center of the bottom of the vehicle 1 along the width direction of the vehicle 1 (the direction perpendicular to the plane of FIG. 2). A main brush 4 is rotatably disposed in the main brush chamber 3, and dust is swept up into the dust box 2 by the rotation of the main brush 4.

An engine room 5 is provided at the rear of the vehicle 1 and at the rear upper portion of the main brush room 3. The engine room 5 is covered by an engine hood 6 integrally formed so as to cover the entire rear of the vehicle 1. . Engine hood 6
Fig. 2
Is rotated clockwise to open to the rear side of the vehicle 1. The rear wall of the engine hood 6 is formed with a through hole 6a (shown in FIG. 4) at the lower center, and the right side wall is formed with a through hole 6b (shown in FIGS. 1 and 3). A seat 7 is fixed on the upper left side of the engine hood 6, and a fuel tank (not shown) is provided in the engine room 5 below the seat 7.
Are arranged.

An air-cooled engine 8 is provided on the right side of the engine room 5. The air-cooling type cooling device 9 is formed so as to cover the sirocco fan 10 (shown in FIG. 2) fixed to the crankshaft 8a of the engine 8 so as to be integrally rotatable and the sirocco fan 10 and the cylinder head of the engine 8 and the like. Duct 11. The duct 11 is arranged at a position where its air intake port 11a faces a through hole 6a formed at the rear of the engine hood 6. Further, an exhaust port 11 b of a duct for guiding air after being used for cooling the engine 8 is disposed at a position facing a through hole 6 b formed on a side portion of the engine hood 6.

An air cleaner 12 of the engine 8 is provided in the engine room 5. An intake hose 13 is connected to the air cleaner 12, and an inlet 13 a of the intake hose 13 as an air intake of the air cleaner 12 is connected to the through hole 6.
a. Also air cleaner 1
2 is connected to the engine 8 via a hose 14.
The exit end of the exhaust pipe 15 for guiding the exhaust of the engine 8 is connected to the vehicle 1
It is arranged at the rear.

Next, the operation of the floor cleaning truck constructed as described above will be described. When the vehicle 1 is run with the main brush 4 rotated, dust on the floor is swept up into the dust box 2 by the main brush 4 and collected. Further, the inside of the dust box 2 is under a negative pressure by the action of a blower motor (not shown).
Most of the dust generated by the rotation of the dust box 2
It is sucked into the inside and attached to a filter (not shown) to be collected.

Part of the dust generated by the rotation of the main brush 4 also enters the engine room 5. The amount of dust in the engine room 5 is smaller at a position farther from the main brush 4, that is, at the rear side of the vehicle 1. Air cleaner 1
Air is taken into 2 from the inlet a of the intake hose 13. The inlet 13a is provided at the rear of the engine hood 6 with the least amount of dust in the engine room 5 and has a through hole 6a.
It faces the outside through a. Therefore, the air cleaner 1
The outside air is mainly taken into 2 through the through hole 6a, and the proportion of the air inside the engine room 5 is small.
Even if the air in the engine room 5 is taken in, the inlet 13
Since a is disposed at the rear of the engine dust having the least dust in the engine room, the dust-free air is taken into the air cleaner 12.

When the air cleaner 12 takes in dusty air, the filter provided in the air cleaner 12 is liable to be clogged, requiring frequent maintenance. However, as described above, since air with less dust is taken into the air cleaner 12, the maintenance cycle becomes longer, and the durability of the air cleaner 12 and the durability of the engine 8 are also improved.

The air inlet 11a of the duct 11 of the air-cooling type cooling device 9 is also disposed at a position facing the through hole 6a, so that the air with less dust can be discharged from the air inlet 11a in the same manner as described above. Incorporated. That is, since air with less dust is used for cooling the engine 8, the starter is less likely to fail than when air with much dust is used, and the durability of the engine 8 is further improved.

Since the exhaust port 11b of the duct 11 is disposed at a position facing the through hole 6b formed on the side of the engine hood 6, the air used for cooling the engine 8 is not supplied to the through hole 6b. Through the side of the engine hood 6 to the outside. Therefore, the exhaust gas is not blown to the floor and causes dust, and the dust in the engine room is not agitated.

The present invention is not limited to the above-described embodiment. For example, the duct 11 and the intake hose 13 are extended so that the positions of the air intake port 11a and the inlet 13a are not at the rear center but at the end of the exhaust pipe 15. , That is, at the rear left side of the engine room 5.
Also, the air intake 11 of the duct 11 and the intake hose 13
a and the inlet 13a are formed in common so as to branch off from the middle, or the air intake 11a and the inlet 13a are arranged at separate positions, and two corresponding holes 6a are provided in the engine hood 6 correspondingly. You may. Alternatively, only the inlet 13a of the intake hose 13 may be provided at a position facing the through hole 6a, and the air in the engine room 5 may be used as the cooling air for the air-cooled cooling device 9. Moreover,
A filter may be provided in the through holes 6a and 6b.

[0021]

As described in detail above, according to the first aspect of the present invention, even if dust generated by the cleaning operation enters the engine room, air with little dust is reliably taken into the air cleaner. In addition, the durability of the air cleaner and the engine can be improved. In addition, when the air intake of the air supply duct to the air-cooled cooling device is also arranged at a position facing the through hole, less dusty air is used for cooling the engine, thereby further improving the durability of the engine. Can be done. In addition, the action of stirring dust in the engine room can be avoided.

According to the second aspect of the present invention, in addition to the above-described effects, the exhaust air of the air-cooled cooling device is discharged from the side of the engine hood to the outside, so that the exhaust gas causes dust. Can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is a partially broken schematic plan view of an embodiment embodying the present invention.

FIG. 2 is a partially broken schematic left side view of the same.

FIG. 3 is a right side view of the same.

FIG. 4 is a rear view of the same.

[Explanation of symbols]

1 ... vehicle, 4 ... main brush, 6 ... engine hood, 6
a, 6b: through-hole, 7: seat, 8: engine, 9: air-cooled cooling device, 11: duct, 11a: air intake, 11
b: exhaust port, 12: air cleaner, 13a: inlet as an air intake of the air cleaner.

Claims (2)

(57) [Claims] 1. A rotating at the bottom of the vehicle, the car dust on the floor
An air cleaner is provided in an engine room of a floor sweeper having an air-cooled engine covered with an engine hood and provided with a main brush for sweeping into a dust box provided on both front sides, and an air intake port of the air cleaner or an engine. A floor cleaning vehicle in which at least the air intake of the air cleaner among the air intakes of the air-cooled cooling device is arranged at a position facing a through hole provided at a rear portion of the engine hood. 2. A rotating at the bottom of the vehicle, the car dust on the floor
An air cleaner is provided in an engine room of a floor sweeper having an air-cooled engine covered with an engine hood and provided with a main brush for sweeping into a dust box provided on both front sides, and an air intake port of the air cleaner or an engine. At least one of the air intakes of the air cleaner of the air-cooled cooling device is disposed at a position facing the through hole provided at the rear of the engine hood, and the exhaust of the duct for guiding the air used for engine cooling is disposed. A floor cleaning truck whose mouth is located at a position facing a through hole formed in a side portion of an engine hood.