Autonomous lawnmower

Abstract

To provide an autonomous lawnmower that can reduce malfunctions and achieve a smaller, lighter design. [Solution] The autonomous lawnmower 10 is equipped with a machine body 11 that includes a grass-cutting unit for cutting grass on the ground and a power unit, and rubber tracks 12 that form the outermost circumference of the machine body 11.

Description

Technical Field

[0001] The present invention relates to an autonomous lawn mower.

Background Art

[0002] Patent Document 1 describes a crawler-type traveling work vehicle characterized in that a support arm incorporating appropriate power transmission means is extended forward from a vehicle body portion, and an appropriate power working device (lawn mower cutter portion) is attached to the tip of this support arm.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the crawler-type traveling work vehicle of Patent Document 1, since the lawn mower cutter portion is arranged outside the crawler, there is a problem that the lawn mower cutter portion fails when the crawler-type traveling work vehicle overturns.

Means for Solving the Problems

[0005] An autonomous lawn mower according to one embodiment includes a lawn mowing portion for mowing grass on the ground and a machine body including power, and is provided with rubber crawlers on the outermost periphery of the machine body.

Effects of the Invention

[0006] According to the autonomous lawn mower of the present disclosure, reduction of failures and miniaturization and lightening can be achieved.

Brief Description of the Drawings

[0007] [Figure 1] It is a perspective view and a side view showing an example of an autonomous lawn mower according to Embodiment 1. [Figure 2]This is a schematic diagram showing an example of slope travel by an autonomous lawnmower according to Embodiment 1. [Modes for carrying out the invention]

[0008] Embodiment 1 Embodiments of the present invention will now be described with reference to the drawings. Figure 1 is a perspective view and a side view showing an example of an autonomous lawnmower according to Embodiment 1. In Figure 1, the autonomous lawnmower 10 comprises a body 11, rubber tracks 12, driving wheels 13, idler wheels 14-1 to 14-3, and guide wheels 15.

[0009] The machine body 11 is a housing that internally houses components related to grass cutting and components related to power. For example, the machine body 11 has a grass cutting section on its bottom surface for cutting grass on the ground.

[0010] The rubber crawler 12 is made by connecting multiple rubber plates in a bendable manner. The rubber crawler 12 is mounted around the driving wheels 13, the road wheels 14-1 to 14-3, and the idler wheel 15. The rubber crawler 12 is positioned to be on the outermost circumference of the machine body 11.

[0011] The driving wheels 13 rotate due to power supplied inside the machine body 11. The driving wheels 13 then transmit rotational motion to the rubber tracks 12, thereby moving the rubber tracks 12.

[0012] The road wheels 14-1 to 14-3 support the rubber crawler 12 that is in contact with the ground.

[0013] The idler wheel 15 is located on the opposite side of the drive wheel 13 with respect to the direction of travel, and allows the rubber crawler 12 to rotate smoothly.

[0014] When viewed from the side (XZ plane) in the direction of travel (X direction), the driving wheels 13, the road wheels 14-1 to 14-3, and the idler wheel 15 are arranged such that at least a portion of the outer edge of the driving wheel 13, the road wheels 14-1 to 14-3, and the idler wheel 15 are located outside the outermost shape of the locomotive body 11.

[0015] Next, the case where the self-propelled lawn mower falls over will be described. It is a schematic view showing an example of slope travel of the self-propelled lawn mower according to Embodiment 1.

[0016] As shown in FIG. 2A, when the self-propelled lawn mower 10 falls on a slope, after rolling down to the lower side of the slope, it stops in the normal orientation as shown in FIG. 2B. In this fall, since the outermost periphery of the self-propelled lawn mower 10 is the rubber crawler 12, it is the rubber crawler 12 that contacts the slope in the rolling-down state, and the machine body 11 does not contact the slope and does not collide. Therefore, the mowing cutter part provided on the machine body 11 is neither deformed nor malfunctioned.

[0017] Thus, according to the self-propelled lawn mower of Embodiment 1, since the outermost periphery is constituted by a rubber crawler, it is possible to reduce malfunctions during a fall. Specifically, when falling on a slope such as a slope or a ridge during travel, the exterior cover and internal devices are protected from deformation or malfunction.

[0018] Also, by protecting the machine body from the impact during a fall with rubber having a low impact force and leg parts having strength, it is possible to achieve miniaturization and weight reduction. Specifically, there is no need to newly protect the machine body with a highly rigid metal frame, and the weight can be reduced. As a result, the battery life is improved.

[0019] Note that the present invention is not limited to the above embodiment, and can be appropriately changed without departing from the gist.

Explanation of Signs

[0020] 10 Self-propelled lawn mower 11 Machine body 12 Rubber crawler 13 Driving wheel 14-1 to 14-3 Turning wheels 15 Guide wheel

Claims

1. The machine includes a grass-cutting unit for cutting grass on the ground and a power unit, An autonomous lawnmower equipped with rubber tracks forming the outermost perimeter of the aforementioned machine.

2. The aforementioned aircraft, A drive wheel that rotates due to the aforementioned power and transmits that rotation to the rubber crawler, thereby moving the rubber crawler, The road wheels that support the aforementioned rubber crawler in contact with the ground, It is equipped with an idler wheel located on the opposite side of the driving wheel with respect to the direction of travel, The driving wheels, the idler wheels, and the idler wheels are the rubber crawler The autonomous lawnmower according to claim 1, wherein at least a portion of the driving wheels, the idler wheels, and the idler wheels are arranged so as to be outside the machine body.

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