Automatic mower

Abstract

The present disclosure is related to an automatic mower. The automatic mower comprises a rack body, a mowing module and a lifting module. The rack body has a track structure. The mowing module is able to selectively slide in and be installed on the rack body through the track structure, or slide out and be separated from the rack body through the track structure. The lifting module is disposed on the rack body. When the mowing module is installed on the rack body, the lifting module is configured to lower the horizontal height of the mowing module.

Description

Unmanned lawnmower This disclosure concerns an unmanned lawnmower. Common lawnmowers use rotating blades to replace manual shearing, improving mowing efficiency. Furthermore, to replace manual labor, unmanned lawnmowers have emerged, which automatically mow lawns according to pre-set routes. However, if the mowing module of such unmanned lawnmowers is damaged and needs repair, the disassembly process is quite difficult for farmers. In view of the above, how to devise an unmanned lawnmower with the advantage of easy maintenance of the mowing module is the direction that practitioners in this technical field are committed to developing. According to one aspect of this disclosure, an unmanned lawnmower is proposed, comprising a frame body, a mowing module, and a lifting module. The frame body has a track structure. The mowing module can be selectively slid into the track structure for installation on the frame body or slid out of the track structure for separation from the frame body. The lifting module is disposed on the frame body. When the mowing module is installed on the frame body, the lifting module is used to adjust the horizontal height of the mowing module. To provide a better understanding of the above and other aspects of this disclosure, specific embodiments are described below in conjunction with the accompanying drawings. The embodiments of this disclosure will be described in detail below, with illustrations provided. In addition to these detailed descriptions, this disclosure can be widely implemented in other embodiments, and any easy substitutions, modifications, or equivalent changes to the described embodiments are included within the scope of this disclosure and are subject to the following patent claims. Furthermore, well-known steps or elements are not described in detail to avoid creating unnecessary limitations to this disclosure. And, unless otherwise stated, the same element symbols in different drawings can be considered corresponding elements. Please refer to Figure 1, which illustrates a schematic diagram of an unmanned lawnmower 100 according to an embodiment of the present disclosure. The unmanned lawnmower 100 includes a frame body 110, a mowing module 120, a lifting module 130, a moving module 140, and a power module 150. The mowing module 120 is mounted on the frame body 110 and is used to mow the lawn while moving with the moving module 140. For example, the mowing module 120 can be a motor-driven or electric mowing module. A lifting module 130 is disposed on the frame body 110. In this embodiment, there are two lifting modules 130, which are respectively disposed on both sides of the frame body 110. When the mowing module 120 is installed on the frame body 110, the lifting module 130 is used to adjust the horizontal height of the mowing module 120. Specifically, the lifting module 130 can be extended and retracted by an electric cylinder, thereby changing the horizontal height of the mowing module 120. Through the lifting module 130, the desired mowing height of the mowing module 120 can be adjusted as needed. In addition, the electric cylinder can optionally be equipped with a hydraulic damper to prevent vibration of the mowing module 120. The power module 150 is, for example, fixed to the frame body 110 and connected to the moving module 140. The power module 150 may include a battery 150b, an electronic control box 150e, a power motor 150m, and a reducer 150g. The battery 150b and the electronic control box 150e provide electrical power to the unmanned lawnmower 100 and allow the unmanned lawnmower 100 to perform lawnmowing operations electronically. Each power motor 150m on both sides is connected to the reducer 150g to provide greater torque from the power motor 150m via the reducer 150g. Please refer to Figures 2A to 2C, which illustrate the assembly and disassembly process of the mowing module 120 of the unmanned lawnmower 100. The unmanned lawnmower 100 may further include a positioning shaft 170, which passes through the frame body 110. After the positioning shaft 170 passes through the frame body 110, a ring can be sleeved on one end to fix the positioning shaft 170. For example, the positioning shaft 170 may be a rod-shaped shaft made of metal. As shown in Figure 2A, when disassembling or replacing the mowing module 120, the aforementioned ring can first be removed, and then the positioning shaft 170 can be pulled out horizontally in a certain direction. The positioning shaft 170 is used to increase the protection of the mowing module 120. It is located on the front side of the mowing module 120, so it can provide a stop when the mowing module 120 is mowing, preventing any obstacles from directly hitting the mowing module 120. In addition, the positioning shaft 170 can be used to limit the mowing module 120, preventing it from coming off the frame body 110 when the mowing module 120 is installed on the frame body 110. The unmanned lawnmower 100 may further include a first limiting beam 161 and a second limiting beam 162. As shown in Figure 2B, after the positioning shaft 170 is removed, the first limiting beam 161 and the second limiting beam 162 can be disassembled horizontally in another orientation. The disassembly order of the first limiting beam 161 and the second limiting beam 162 is not limited, and priority can be determined according to actual needs. The horizontal height at which the second limiting beam 162 is installed is greater than the horizontal height of the first limiting beam 161. Furthermore, for example, the first limiting beam 161 can be fixed to the frame body 110 and the mowing module 120 by means of screws, and the second limiting beam 162 can be fixed to the frame body 110 by means of screws, for example. Similar to the positioning shaft 170, the first limiting beam 161 and the second limiting beam 162 also enhance the protection of the mowing module 120. Located on the front side of the mowing module 120, they provide a stop during mowing operations, preventing any obstacles from directly impacting the mowing module 120. The first limiting beam 161 and the second limiting beam 162 also limit the mowing module 120, preventing it from detaching from the frame body 110 when it is installed. Specifically, the first limiting beam 161 is directly fixed to one side of the mowing module 120 for direct limiting, thereby increasing the stability of the mowing module 120 within the frame body 110. As shown in Figure 2C, after the first limiting beam 161 and the second limiting beam 162 are removed, the mowing module 120 can be taken out from the frame body 110 in the same orientation as when the first limiting beam 161 and the second limiting beam 162 were removed, so as to facilitate replacement or maintenance. Please refer further to Figure 3, which illustrates the unmanned lawnmower 100 with its mowing module 120 detached. The frame body 110 has a track structure 111, and the mowing module 120 of the unmanned lawnmower 100 is detachably mounted on the track structure 111. Specifically, the track structure 111 has a first track groove 111r1, a second track groove 111r2, and a third track groove 111r3. The second track groove 111r2 connects the first track groove 111r1 and the third track groove 111r3, and the first track groove 111r1 and the second track groove 111r2 are opposite each other. As shown in Figure 3, the first track groove 111r1, the second track groove 111r2, and the third track groove 111r3 may, but are not limited to, form a U-shaped structure. Furthermore, the first track groove 111r1, the second track groove 111r2, and the third track groove 111r3 define a notch n, such that the mowing module 120 can slide into the frame body 110 through the notch n. After the mowing module 120 slides into the frame body 110 through the notch n, the positioning shaft 170 is configured to pass through the frame body 110, the first limiting beam 161 is configured to be fixed to the frame body 110 to close the notch n and fix it to the mowing module 120, and the second limiting beam 162 is configured to be fixed to the frame body 110. Therefore, the mowing module 120 of the unmanned lawnmower 100 disclosed herein can be selectively installed on the frame body 110 by sliding into the track structure 111 or detached from the frame body 110 by sliding out of the track structure 111. Furthermore, when the mowing module 120 is installed on the frame body 110, the lifting module 130 can be used to adjust the horizontal height of the mowing module 120. Please refer to Figure 4, which shows a side view of the unmanned lawnmower 100. The moving module 140 of the unmanned lawnmower 100 may include two track assemblies 141 respectively disposed on both sides of the frame body 110. As shown in Figure 4, each track assembly 141 includes a track 141t, a front guide wheel 141fw, a rear drive wheel 141bw, and multiple carrier wheels 141cw. Each carrier wheel 141cw is connected to the frame body 110 through a shock absorber 141a to increase the shock resistance. The rear drive wheel 141bw is rotatably connected to the power module 150. The power of the power motor 150m of the power module 150 provides torque to the rear drive wheel 141bw via a reducer 150g, so that the rear drive wheel 141bw drives the track assembly 141 to move. The front guide wheel 141fw can be used to move the track assembly 141 to allow the unmanned lawnmower 100 to cross raised obstacles, and can also be used to adjust the tension of the track 141t. Please refer to Figures 5 and 6. Figure 5 shows a rear view of the unmanned lawnmower 100, and Figure 6 shows an inverted schematic diagram of the mowing module 120 of the unmanned lawnmower 100. The lawnmower module 120 may include a transmission device 121, a lawnmower blade 122, and a drive device 123. The transmission device 121 includes a belt 121b, a first pulley 121w1, a second pulley 121w2, and an idler pulley 121i. The first pulley 121w1 and the second pulley 121w2 are connected via the belt 121b, wherein the diameter of the first pulley 121w1 is larger than the diameter of the second pulley 121w2. The second pulley 121w2 is rotatably connected to the drive device 123, and the lawnmower blade 122 is rotatably connected to the first pulley 121w1. For example, the lawnmower blade 122 may be a rotary blade, and the drive device 123 may be an engine or an electric device to provide power for the unmanned lawnmower 100 to mow. When the drive unit 123 is activated, for example by hand or remote control, it drives the second pulley 121w2 to rotate, which in turn drives the first pulley 121w1 to rotate via the belt 121b, thereby causing the lawn mower 122 to rotate for mowing. The idler pulley 121i abuts against the belt 121b and is configured to adjust the tension of the belt 121b. Accordingly, the unmanned lawnmower disclosed in this embodiment utilizes the design of a track structure on the frame body, which allows for easy disassembly of the mowing module, thereby facilitating replacement by farmers themselves. Furthermore, the unmanned lawnmower disclosed in this embodiment is equipped with a lifting module design, which can be used to adjust the horizontal height of the mowing module to meet different mowing height needs of farmers. Although this disclosure has been presented above with reference to embodiments, it is not intended to limit the scope of this disclosure. Those skilled in the art to which this disclosure pertains can make various modifications and refinements without departing from the spirit and scope of this disclosure. Therefore, the scope of protection of this disclosure shall be determined by the appended claims. 100: Unmanned lawnmower; 110: Frame body; 111: Track structure; 111r1: First track groove; 111r2: Second track groove; 111r3: Third track groove; 120: Mowing module; 121: Transmission device; 121b: Belt component; 121i: Idler pulley; 121w1: First pulley; 121w2: Second pulley; 122: Mowing blade; 123: Drive device; 130: Lifting module; 140: Moving module; 141: Track assembly; 141a: Shock absorber; 141bw: Rear drive wheel; 141cw: Carrier wheel; 141fw: Front guide wheel; 141t: Track; 150: Power module; 150b: Battery; 150e: Electronic control box; 150g: Reducer; 150m: Power motor; 161: First limiting beam; 162: Second limiting beam; 170: Positioning shaft. Figure 1 illustrates a schematic diagram of an unmanned lawnmower according to one embodiment; Figures 2A-2C illustrate schematic diagrams of the disassembly and assembly stages of the mowing module of the unmanned lawnmower in Figure 1; Figure 3 illustrates a schematic diagram of the unmanned lawnmower in Figure 1 with the mowing module removed; Figure 4 illustrates a side view of the unmanned lawnmower in Figure 1; Figure 5 illustrates a rear view of the unmanned lawnmower in Figure 1; and Figure 6 illustrates a schematic diagram of the mowing module of the unmanned lawnmower in Figure 1. 100: Unmanned lawnmower 110: Rack body 120: Lawn Mowing Module 130: Lifting Module 140: Mobile Module 150: Power Module 161: First limiting beam component 162: Second limiting beam component 170: Positioning shaft

Claims

1. An unmanned lawnmower includes: A frame body having a track structure, wherein the track structure has a first track groove, a second track groove, and a third track groove, the second track groove connecting the first track groove and the third track groove; a mowing module selectively slides into the frame body via the track structure for installation or slides out of the frame body via the track structure, wherein the first track groove, the second track groove, and the third track groove define a notch, allowing the mowing module to slide into the frame body through the notch; and a lifting module disposed on the frame body, wherein when the mowing module is installed on the frame body, the lifting module is used to adjust the horizontal height of the mowing module. The unmanned lawnmower as described in claim 1 further includes: A mobile module includes two track assemblies respectively disposed on both sides of the frame body, wherein each track assembly includes a track, a front guide wheel, a rear drive wheel and a plurality of load wheels, and each load wheel is connected to the frame body through a shock absorber. The unmanned lawnmower as described in claim 2 further includes: A power module is fixed to the frame body and connected to the mobile module, wherein the rear drive wheel is rotatably connected to the power module. The unmanned lawnmower as described in claim 1 further includes: A first limiting beam is configured to be fixed to the frame body to close the gap and fix the mowing module after the mowing module slides into the frame body through the gap. The unmanned lawnmower as described in claim 4 further includes: A second limiting beam is configured to fix the mowing module to the frame body after the mowing module slides into the frame body through the notch, wherein the horizontal height of the second limiting beam is greater than the horizontal height of the first limiting beam. The unmanned lawnmower as described in claim 1 further includes: A positioning shaft is provided, which is configured to pass through the frame body after the mowing module slides into the frame body through the notch. The unmanned lawnmower as described in claim 1, wherein the mowing module includes a transmission device, the transmission device including a belt, a first pulley, a second pulley and an idler pulley, the first pulley and the second pulley being connected through the belt, the idler pulley abutting against the belt, wherein the diameter of the first pulley is larger than the diameter of the second pulley. The unmanned lawnmower as described in claim 7, wherein the mowing module includes a mowing blade rotatably connected to the first pulley. The unmanned lawnmower as described in claim 7, wherein the mowing module includes a drive unit, and the second pulley is rotatably connected to the drive unit.

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