JPH02117304A - Lawn mower - Google Patents

Abstract

PURPOSE:To make reaping operation efficient by storing lawn blown by an air fan of an air fan chamber through a lawn sending pipe in a lawn recovering container. CONSTITUTION:Lawn reaped by a spiral reaping blade 1 equipped at the front of machine body is once stored in a lawn containing chamber arranged at the rear of the spiral reaping blade 1 and forcedly sent in the direction of an exhausting fan 21 by a rotating screw conveyor 20. Lawn transported to one end of the lawn containing chamber is sent to an air sending fan chamber 3 by the exhausting fan 21, blown by an air sending fan 30 in the air sending fan chamber 3 and recovered through a lawn sending pipe 4 in a lawn recovering container or a net bag. Consequently, recovery of reaped lawn is not required and operation efficiency can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION OBJECT OF THE INVENTION Field of Industrial Application The present invention relates to an improvement in a lawn mower, which is capable of collecting cut grass at the same time as the lawn mowing operation. It is.

BACKGROUND OF THE INVENTION Lawn mowers are generally configured to mow lawns with a cutting blade installed at the front of the machine, which is steered by a handle placed at the rear of the machine and moved forward by drive wheels. The grass is left as is on the ground.

Problems to be Solved by the Invention However, in such conventional lawn mowers,
The cut grass must be collected after the mowing operation, which is very inefficient, and the work of mowing and collecting the grass requires double effort and troublesome work, and it is extremely difficult to completely collect the cut grass. This lacks reliability, and if uncollected cut grass remains on the ground, even if fertilizer is applied to grow the grass, it will be spread on the grass that has been cut and remains, and it will not be effective at the roots of the grass. However, it has disadvantages such as having no effect on the growth of grass and having an adverse effect on the growth of grass.

The present invention has been made in response to these circumstances, and provides a lawn mower that makes it possible to collect the cut lawn at the same time as the lawn mowing operation, thereby increasing the efficiency of the mowing operation. The purpose is to provide a machine.

``Structure of the Invention'' Means for solving the problem and according to the present invention, the above object is achieved by using a spiral system installed at the front of the fuselage, as shown in FIGS. 1 to 3, which correspond to embodiments of the present invention. Behind the spiral cutting blade 1 is a lawn storage chamber that temporarily stores the lawn cut by the spiral cutting blade 1, transports it to one end by a screw conveyor 20, and then sends it out to the ventilation fan chamber 3 by a discharge fan 21. This is accomplished by providing a lawn mower in which the grass blown out by the blower fan 30 of the blower fan chamber 3 is stored in the grass collection container 5 via the reverse feed reviver 4.

Function Based on the above structure, in the lawn mower according to the present invention, the lawn 36 mowed by the spiral cutting blade 1 installed at the front of the machine is stored in the lawn storage located behind the spiral cutting blade 1. A screw conveyor 20 is housed in the chamber 2 and is rotating in the direction of the arrow 1) in FIGS. 1 and 3.
The air is forcibly sent out in the direction of the exhaust fan 21. As described above (one end of the lawn storage chamber 2 (discharge fan 2)
The lawn transported in one direction) is sent out to the ventilation fan chamber 3 by the discharge fan 21, blown away by the ventilation fan 30 in the ventilation fan chamber 3, and sent to the lawn collection container 5 via the lawn feeding vibrator 4. Or collected into a net bag 6.

When the lawn collection container 5 or fence bag 6 is full, either remove it from the cart and throw it away, or attach another collection container 5 or net bag 6.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2, a lawn mower according to the present invention is shown, and one example of the machine body includes a steering handle 60 provided at the rear, a driving wheel 61 for traveling, and a front driven wheel 6.
2. The machine includes a driving engine 63 and a spiral cutting blade 1 installed at the front of the machine over substantially its entire width.

As shown in FIG. 4, the spiral cutting blade 1 is formed by continuously forming cutting blades 1 in a spiral around a long axis, and cooperates with an auxiliary blade 26 while rotating in the direction of arrow a in FIG. The lawn is mowed. At the tip of a hood 10 that is attached to cover the cutting blade 1, by creating a flow of wind in the direction of the rotation axis of the cutting blade 1, the cut grass is caught in the cutting blade l and the tip is not released onto the ground from
In addition, a small arc-shaped switching piece 11 is provided to protrude in the direction of the rotation axis so that the grass is not knocked over by the downward airflow from the hood 10 due to the rotation of the cutting blade l and cannot be captured by the auxiliary cutting blade 26. has been done. In addition, at the bottom of the cutting blade l, that is, behind the auxiliary cutting blade 26, a strip 22 of the lawn supporter is installed extending along the entire length of the cutting blade 1 in the longitudinal direction.
The cut lawn is not discharged onto the ground, but is stored in a lawn storage chamber 2, which will be described later.

In this lawn receptacle, a lawn storage chamber 2 that is continuously formed behind the strips 22 is covered with a cylindrical hood 23 that has an approximately C-shaped cross section with a front opening. , a screw conveyor 20, and a discharge fan 21.

As shown in FIGS. 1 and 2, the screw conveyor 20 and the discharge fan 21 transmit the output from the engine 63 to a belt 65 via a transmission shaft 64 and a rotating shaft 31 of a blower fan 30 (described later). A screw conveyor 20 is integrally formed around a shaft 25 that is taken in and rotates in the direction indicated by the arrow in FIG. 21 are arranged respectively.

Although FIG. 3 shows the exhaust fan 21 having two blades, the number of blades is not limited to this, and the number of blades may be increased or decreased as necessary.

On the other hand, an air passage 24 is formed on the ceiling surface of the lawn storage chamber 2 at a portion where the exhaust fan 21 is arranged, and communicates with the ventilation fan chamber 3. As shown in FIGS. 1 and 2, this blower fan chamber 3 is a cylindrical body placed on the front side of the aircraft body, and has a large number of fins 32 made of FRP or the like arranged radially around a shaft 31 inside. A blower fan 30 is installed and rotates at high speed in the direction of arrow C in FIG. 3.

Further, at the front upper end of the wind passage 24 communicating with the lawn storage chamber 2, a small arc-shaped wind direction changing protrusion 34 is provided to protrude toward the axis 31.
In the figure, it is deflected in the direction of arrow g to prevent a downward airflow from occurring within the air passage 24.

Further, in this embodiment, an opening lower 0 is bored from the rear bottom wall of the ventilation fan chamber 3 to the upper part of the cylindrical hood 23, as shown in FIGS. 4 closed by an elastic body 71 forms a pebble discharge lower. If the pebble discharge lower is formed in the blower fan chamber 3 in this way, when the pebbles 72 etc. get mixed into the lawn and are sent to the blower fan chamber 3, the pebbles 72 etc. will fall into the pebble discharge port due to their own weight, or The collision deforms the elastic body 71, creates a gap between the edge of the elastic body 71 and the lower part 0, and the pebbles are discharged to the outside. 72 etc. can be reliably prevented.

In addition, in FIGS. 5 and 6, 73 indicates the elastic body 71.
This shows a rivet for fixing the.

A discharge port 35 is provided at the rear of the blower fan chamber 3 configured as described above, and a grass feeder vibrator 4 having a bellows portion 7 is provided.
are removably connected in consideration of maintenance etc. in the ventilation fan room 3. This lawn feeding vibe 4 is shown in Fig. 1 and Fig. 2.
As shown in the figure, it is supported by a column 40 that stands upright in the middle of the fuselage and is integrally formed with a truck 42, and is disposed at the upper side of the fuselage, and extends from a slightly rearward portion of the column 40 to a terminal portion. The bottom part leading up to the lawn mower is opened so that the cut grass that has been transported is discharged downward as shown by arrow e.

On the other hand, at a position directly below the frontage 41 of the lawn feeding vibrator 4,
A trolley 42 composed of a vibrator-like member is connected, and a lawn collection container 5 is removably placed on top of the trolley 42, but as shown in FIG. Insert the net bag 6 into the lawn feeding vibrator 4 and move the trolley 4
It may be installed on top of 2.

Therefore, according to this embodiment, the lawn mowed by the spiral cutting blade 1 is discharged rearward with the added blowing action due to the rotational force of the cutting blade 1, and is temporarily stored in the lawn storage chamber 2. After that, the screw conveyor 20 inside the lawn storage room 2
The air is conveyed to one end by the exhaust fan 21 and blown into the fan chamber 3 by the wind force (in the direction of the arrow f) caused by the rotation of the exhaust fan 21 in the direction of the arrow 1) in FIG. As shown in FIGS. 3 and 7, inside the blower fan room 3, a negative pressure section 37 is generated at the lower part of the blower fan 30 by the blower fan 3o rotating at high speed in the direction of arrow C, so that cut grass is stored in the blower fan chamber 3. 3
6 is attracted to the negative pressure part 37 and flows toward the center along one surface 32a of the fin 32, and airflow 38 that escapes along the one surface 32a of the fin 32 in the rotational circumferential direction is generated, Since the pressure is negative compared to the other surface 32b, the cut grass 37 is attracted to one surface 32a of the fin 32 and carried to the vicinity of the rear wall of the air passage 24, and is then discharged by centrifugal force. It is discharged to the outlet 35, is forcibly conveyed to the lawn feeding vibrator 4, and is sent to the lawn collection container 5 through the opening.
and the grass collection container 5ζ is collected.

[Effects of the Invention] As is clear from the above explanation, the lawn mower according to the present invention can store the cut lawn in the lawn collection container without releasing it all onto the ground.
There is no need to collect the cut grass again after mowing the lawn, which has the effect of improving work efficiency and reducing collection costs.

In addition, because the cut leaves of the cut lawn are collected at the same time as the grass is mowed, they are not left at the roots of the lawn, so even if fertilizer is applied to grow the lawn, the leaves are cut, and the remaining grass prevents the fertilizer from penetrating. Since it acts directly on the lawn, it has the effect of cultivating a high-quality lawn.

Furthermore, the grass clippings are conveniently placed in collection containers or mesh bags for use as fertilizer.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a 11j side view of the lawn mower of the present invention, FIG. 2 is a plan view of the present invention, FIG. 3 is an explanatory diagram of the main parts of the present invention,
The figure is a schematic diagram showing the arrangement of the screwdriver and blower fan of the present invention, Figure 5 is a front view showing the pebble discharge port, Figure 6 is a sectional view thereof, and Figure 7 is an explanation showing the state inside the blower fan chamber. Figure 8 shows the state in which the net bag is attached to the trolley.
Lawn storage room, 3-Blower fan room, 4-Grass feeding vibe, 5
- Lawn collection container, 6 - Net bag, 7 - Bellows section, 8 - Ventilation fan storage section, lO - Hood, II - Switching piece,
2o...Screw conveyor, 21...
・Exhaust fan, 22-lawn tray strip, 23-cylindrical hood, 24-air path, 25-long shaft, 30... ventilation fan, 31-rotating shaft, 32-fin, 34-protrusion piece, 35-
Exhaust port, 3G - mown lawn, 37 - negative pressure section, 4o - pillar, 41 - vibe opening, 42 - trolley, Go - handle,
61-driving wheel, 62-front driven wheel, 63-driving engine, 64-transmission shaft, 65-nort, 70-opening, 71-strength body Fig. 1 Fig. 2 Fig. 8

Claims (1)

[Claims] 1. The lawn cut by the spiral cutting blade is temporarily stored behind the spiral cutting blade installed at the front of the machine, and after being conveyed to one end by a screw conveyor, it is discharged. A lawn mower that is provided with a grass storage chamber that sends air to a blower fan room by a fan, and stores the grass blown out by the blower fan in the blower fan room into a grass collection container via a grass feeder pipe. 2. A pebble discharge port is formed by closing the opening with an elastic material from the rear upper part of the lawn storage chamber to the ventilation fan chamber, and pebbles, etc. that have entered the ventilation fan chamber are removed by deformation of the elastic material to the opening and the edges of the elastic material. 2. The lawn mower according to claim 1, wherein the lawn mower discharges water to the outside through a gap formed between the lawn mower and the lawn mower. 3. The lawn mower according to claim 1 or 2, wherein the lawn collection container is a net bag. 4. The lawn mower according to claim 1, 2 or 3, wherein a switching piece is formed at the tip of the hood of the cutting blade to project toward the center of rotation of the cutting blade. 5. The lawn according to claim 1, 2 or 3, wherein a projecting piece for changing the direction of the wind is provided on the front upper end wall surface of the air passage leading from the lawn storage chamber to the blower fan room, the projecting piece projecting toward the rotation center of the blower fan. Reaper. 6. A switching piece is formed at the tip of the hood of the cutting blade that protrudes toward the rotation center of the cutting blade, and a blowing fan is provided on the front upper end wall of the air passage leading from the lawn storage chamber to the blowing fan room. 4. A lawn mower according to claim 1, further comprising a projecting piece for changing wind direction projecting toward the rotation center of the lawn mower.