Riding electric mower

Abstract

To provide a riding electric mower in which a center of gravity of a machine body is made to be low so that operation can be stably performed and lawn-mowing work can be safely performed.SOLUTION: In a riding electric mower, a mower 4 is mounted to a front portion of a traveling undercarriage 3 that travels with front and rear wheels 1, 2, a driver's seat 5 and a collector 6 are provided on the traveling undercarriage 3, and lawn mowed by the mower 4 is sent to the collector 6 by a conveyance duct 8. In the riding electric mower, each of the front and rear wheels 1, 2 is driven by axial-drive electric motors 1M, 2M, and a battery 7 that supplies power to each of the electric motors 1M, 2M is mounted in a bottom part of the traveling undercarriage 3.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a riding electric lawnmower for mowing lawns. [Background technology]

[0002] The riding electric lawn mower is described in JP 2020-156340 A, and has a mower for cutting grass attached to the front of a vehicle body that moves on four wheels, a collector for storing the cut grass is provided on the vehicle body, and the grass is sent from the mower to the collector through a grass collection duct, and the operator operates the machine while sitting in a seat provided at the front of the vehicle body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-156340 Summary of the Invention [Problem to be solved by the invention]

[0004] In this electric lawnmower, the left and right front wheels mounted on the chassis are driven by a front power transmission system via a front-wheel electric motor and a differential drive mechanism, and the left and right rear wheels are driven by a rear power transmission system via a rear-wheel electric motor and a differential drive mechanism, so a drive battery is mounted above them, and a collector is further mounted above that. Because of this, the collector is positioned high off the ground, and when a lot of grass accumulates in the collector, the center of gravity of the machine becomes high, making it unstable, and it becomes unstable when traveling over uneven ground, and even more unstable when dumping the collector to remove the grass.

[0005] To provide a riding electric lawnmower with a lower center of gravity of the machine body, thereby making it easier to steer and operate stably, and enabling safe lawn mowing work. [Means for solving the problem]

[0006] The above-mentioned object of the present invention is achieved by the following technical means.

[0007] The invention of claim 1 is a riding electric lawnmower that has a mower 4 attached to the front of a chassis 3 that runs on front and rear wheels 1 and 2, a driver's seat 5 and a collector 6 on the chassis 3, and the grass cut by the mower 4 is sent to the collector 6 through a conveying duct 8, and is characterized in that the front and rear wheels 1 and 2 are each driven by axle-driven electric motors 1M and 2M, and a battery 7 that supplies power to each electric motor 1M and 2M is mounted on the bottom of the chassis 3.

[0008] The invention of claim 2 is the riding electric lawnmower according to claim 1, characterized in that the blower 9 is driven by a blower drive motor 8M provided on the side of the transport duct to blow air rearward.

[0009] The invention of claim 3 is the riding electric lawnmower according to claim 1, characterized in that a transport duct 8 is connected to the center of the collector 6 in the left and right directions. [Effects of the Invention]

[0010] In the invention of claim 1, the running chassis 3 is driven by electric motors 1M, 2M attached to the front and rear wheels 1, 2, so there is no need for a drive force transmission mechanism at the bottom of the running chassis 3, and the large-capacity battery 7 can be mounted in a low position at the bottom of the running chassis 3, and the collector 6 located above it can be mounted on the running chassis 3 at a low position from the ground.Since the heavy battery 7 is mounted at the bottom of the running chassis 3 and the collector 6 is also in a low position, the center of gravity of the entire machine is low, allowing for stable grass cutting work.

[0011] In the invention of claim 2, for collector 6 located at a low position, blower 9 is driven by the horizontal shaft of blower drive motor 8M mounted on the side of conveying duct 8 to blow air rearward and upward, efficiently blowing grass clippings into collector 6, so that the grass clippings are blown up to a low height and the blower drive motor 8M can function with a low output.

[0012] According to the invention of claim 3, the grass clippings blown into the center of the conveying duct 8 by the blower 9 are distributed to the left and right sides within the collector 6, resulting in an even load, good weight balance of the machine, and stable operation. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a right side view of a riding electric lawnmower according to an embodiment of the present invention. FIG. [Figure 2] FIG. 1 is a plan view of a riding electric lawnmower showing power transmission. [Figure 3] FIG. 2 is a right side view of the riding electric lawn mower during lawn mowing operation. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

[0015] As shown in Figure 1, a riding electric lawnmower has a driver's seat 5 at the front of a chassis 3 that travels on left and right front wheels 1,1 and left and right rear wheels 2,2, and can be steered by operating a steering wheel 11 attached to a front panel 10 that stands upright in front of the chassis 3, and a collector 6 that collects grass clippings is located behind the driver's seat 5 and dumped rearward by a hydraulic cylinder (not shown).The pressurized oil supplied to the hydraulic cylinder is oil stored in a hydraulic pump driven by a hydraulic electric motor that is driven when the traveling electric motor is stopped, which helps to level out power consumption.

[0016] A mower 4 for cutting grass is mounted below the front panel 10 at the front lower part of the running chassis 3, and the mower 4 and collector 6 are connected at the left-right centre by a transport duct 8 so that the cut grass is blown into the collector 6 by air from a blower 9. The blower 9 is driven by a blower drive motor 8M attached to the side of the transport duct 8, and blows the cut grass in the transport duct 8 into the collector 6 at the rear. The cut grass blown into the left-right centre of the collector 6 is distributed to the left and right within the collector 6 and loaded evenly, so the weight of the collector 6 does not become unevenly distributed to the left and right on the running chassis 3.

[0017] As shown in Figure 2, axle-driven electric motors 1M, 1M that drive the left and right front wheels 1, 1 respectively and axle-driven electric motors 2M, 2M that drive the left and right rear wheels 2, 2 respectively are provided at the bottom of the running chassis 3, and a battery 7 and control devices for each electric motor are mounted in the space at the bottom of the running chassis 3 away from these.

[0018] Furthermore, if aluminum thermoelectric elements are attached to the heat generating parts of the electric motors 1M, 1M, electric motors 2M, 2M and battery 7 to generate electricity and charge the battery 7, the lawn mowing operation can be extended.

[0019] Therefore, since the collector 6 can be provided on the upper surface of the traveling chassis 3, the collector 6 can be made lower, the weight balance of the machine body is good, the machine can travel stably on an uneven grass surface, and the operator sitting in the cockpit 5 can turn around and check the rear of the machine body over the collector 6, making it easier to operate. [Explanation of symbols]

[0020] 1 front wheel 2 rear wheels 3 Running chassis 4 Moa 5. Cockpit 6 Collector 7. Battery 8 Conveying duct 8M Blower drive motor 9 Blower

Claims

1. This riding electric lawnmower has a mower (4) attached to the front of a chassis (3) that runs on front and rear wheels (1, 2), a driver's seat (5) and a collector (6) provided on the chassis (3), and grass clippings cut by the mower (4) are sent to the collector (6) through a conveying duct (8). The front and rear wheels (1, 2) are each driven by a shaft-driven electric motor (1M, 2M), and a battery (7) that supplies power to each electric motor (1M, 2M) is mounted on the bottom of the chassis (3).

2. 2. The riding electric lawnmower according to claim 1, wherein a blower (9) is driven by a blower drive motor (8M) provided on the side of the transport duct (8) to blow air rearward.

3. 2. The riding electric lawnmower according to claim 1, wherein a conveying duct (8) is connected to the center of the collector (6) in the left and right directions.

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