Autonomous travel type mower

Abstract

The utility model discloses an independent travel type mower which can reduce abnormal noise during mowing. The independent travel type mower comprises a mower blade disc driven by a motor, at least one mower blade installed on the mower blade disc, a mower blade upper and lower plate provided with the motor, a fixed support provided on a mower blade base plate, a mower blade upper and lower driving shaft capable of arbitrarily setting the height of the mower blade upper and lower plate, a mower blade upper and lower driving shaft and a mower blade upper and lower guide communicating with the mower blade base plate and the mower blade upper and lower plate, and a clamping mechanism arranged on the mower blade upper and lower plate and pressing the fixed support to lock the guide gap.

Description

Technical Field

[0001] This utility model relates to an autonomous driving lawn mower. Background Technology

[0002] Patent document 1 describes a self-propelled lawnmower with a mechanism that changes the mowing height by changing the wheel angle and the height of the device center.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2023-8186 Utility Model Content

[0004] However, in the guide mechanism for changing the height of the mowing blade, mowing requires high-speed rotation of the blade, and the guide mechanism for the height change mechanism needs a clearance for operation. Due to the high-speed rotation of the blade, knocking noises can easily occur in the clearance of the guide. Furthermore, as a countermeasure, it is necessary to move the weight component that can suppress the vibration of the rotating blade, resulting in an increase in the overall weight of the device, including a heavier height change mechanism, increased drive force, and an increased battery.

[0005] One embodiment of the autonomous lawnmower has a clamping part for pressing the gap of the guide mechanism.

[0006] Utility Model Effect

[0007] The self-propelled lawnmower of this invention reduces abnormal noise during mowing. Furthermore, the clamping mechanism eliminates the need to increase the weight of the device, thus enabling overall weight reduction and decreasing the driving force required for movement. Consequently, it reduces motor capacity or battery size, achieving cost reduction. Attached Figure Description

[0008] Figure 1 This is a perspective view showing the internal structure of the autonomous lawnmower according to Embodiment 1.

[0009] Figure 2 This is a top view showing the internal structure of the autonomous lawnmower according to Embodiment 1.

[0010] Figure 3 This is a perspective view of the autonomous lawnmower described in Embodiment 1. Detailed Implementation

[0011] Implementation Method 1

[0012] The embodiments of this utility model will now be described with reference to the accompanying drawings. Figure 1 This is a perspective view showing the internal structure of the autonomous lawnmower according to Embodiment 1. Figure 2This is a top view showing the internal structure of the autonomous lawnmower according to Embodiment 1.

[0013] exist Figure 1 The autonomous driving lawnmower 10 includes a lawnmower blade 11, a lawnmower blade disc 12, a lawnmower blade base plate 13, upper and lower lawnmower blade plates 14, upper and lower lawnmower blade drive shafts 15, a fixed support column 16, a clamping mechanism 17, a motor 18, and upper and lower lawnmower blade guides 19.

[0014] The lawn mower blade 11 is a blade used to cut grass growing on the ground. The lawn mower blade 11 is mounted at the end of the lawn mower blade disc 12.

[0015] The lawn mowing blade disc 12 is a disc that rotates by being driven by a motor 18.

[0016] The mowing blade base plate 13 is a base plate fixed to the self-propelled lawnmower.

[0017] The upper and lower blade plates 14 are plates on which the motor 18 is fixed. The upper and lower blade plates 14 have through holes through which the upper and lower blade guides 19 pass, and are structured to move up and down along the fixed support 16. Through this structure, the height of the blade 11, the blade disc 12, and the motor 18 can be changed.

[0018] The upper and lower drive shaft 15 of the mower blade is a cylindrical shaft. The upper and lower drive shaft 15 of the mower blade is connected to the upper and lower plates 14 of the mower blade. The height of the upper and lower drive shaft 15 of the mower blade can be arbitrarily set using trapezoidal threads or the like.

[0019] The fixed support 16 is a columnar structure that fixes the fixed support 16 at the lower end and fixes the upper and lower guide members 19 of the mowing blade at the upper end. This structure defines the range of vertical movement of the upper and lower plates 14 of the mowing blade.

[0020] The clamping mechanism 17 is mounted on the upper and lower plates 14 of the mower blade and is a mechanism that presses down on the fixed support 16 to lock the gap of the guide member. Figure 2 As shown, the clamping mechanism 17 and the fixing post 16 are located on the extension of the tangent 22 in the upper and lower guide members 19 of the mower blade, centered on the guide position circle 21 of the upper and lower drive shaft 15 of the mower blade. Through this positional relationship, the clamping mechanism 17 can properly press the fixing post 16. As a result, the pressing sound of the guide gap can be suppressed by the reaction force of the clamping mechanism 17 pressing the fixing post 16, which locks the guide gap.

[0021] Motor 18 is an electric motor that rotates the lawn mower blade disk 12 via a rotating shaft connected to the lawn mower blade disk 12.

[0022] The upper and lower guides 19 of the mowing blade are cylindrical shafts. The upper and lower guides 19 pass through the through holes of the upper and lower plates 14 of the mowing blade and define the direction of movement of the upper and lower plates 14 of the mowing blade in the vertical direction.

[0023] Figure 3 This is a perspective view of the autonomous lawnmower described in Embodiment 1. Figure 3 As shown, by arranging a grass-cutting blade 11 and a grass-cutting blade disc 12 on the lower part of the vehicle body with an infinite track 31, grass growing on the ground can be cut.

[0024] Thus, according to Embodiment 1, the autonomous lawnmower suppresses and fixes the gap between the guide members by pressing the fixing part with a clamping mechanism, thereby reducing abnormal noise during mowing. Furthermore, this clamping mechanism eliminates the need to increase the weight of the device, enabling overall lightweight design and reducing the driving force required for movement. Consequently, motor capacity or battery capacity can be reduced, achieving cost reduction.

[0025] Furthermore, this invention is not limited to the above-described embodiments, and appropriate modifications can be made without departing from its spirit. For example, the number of mowing blades mounted on the mowing blade disc is not particularly limited. In addition, when mounting two or more mowing blades on the mowing blade disc, it is preferable to mount them with the center of rotation of the mowing blade disc as the center of gravity.

[0026] Symbol Explanation

[0027] 10-Autonomous driving lawnmower, 11-Mowing blade, 12-Mowing blade disc, 13-Mowing blade base plate, 14-Mowing blade upper and lower plates, 15-Mowing blade upper and lower drive shaft, 16-Fixed support, 17-Clamping mechanism, 18-Motor, 19-Mowing blade upper and lower guide.

Claims

1. A self-propelled lawnmower, characterized in that, have: The lawnmower blade disc is driven by a motor; At least one mowing blade is mounted on the mowing blade disc; The upper and lower plates of the lawn mowing blade are equipped with the motor; The upper and lower drive shafts of the mowing blades allow for arbitrary setting of the height of the upper and lower plates of the mowing blades; The upper and lower drive shafts of the mowing blade and the upper and lower guides of the mowing blade are connected to the mowing blade base plate and the upper and lower plates of the mowing blade. A fixed support is provided on the mowing blade substrate; and A clamping mechanism, which is set on the upper and lower plates of the mowing blade, presses the fixed support to lock the gap of the guide.

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