Work machine

Abstract

The present invention provides a work machine capable of improving the stability of the work machine during travel and providing assistance during travel by a worker. According to one mode of the invention, the working machine comprises a main body part and an operation part; the main body part comprises a driving motor, an assembling part and a mounting part; the travel motor is configured to generate rotational power that causes the main body to travel. The mounting portion is configured to detachably mount a battery for supplying power to the travel motor. The mounting part is arranged on the inner side of a predetermined area formed in a top view of the main body part; the predetermined area is an area formed between the first straight line and the second straight line; the first straight line is a straight line passing through the center position of the travel motor in the front-back direction, which is the travel direction of the main body part, in the left-right direction orthogonal to the front-back direction. The second straight line is a straight line passing through the central position of the assembling part in the front-back direction in the left-right direction; the operation part is connected to the mounting part and is configured to be operable to assist the travel of the main body part.

Description

Technical Field

[0001] This invention relates to a work machine. Background Technology

[0002] Patent document 1 discloses an unmanned operation vehicle, which is designed to facilitate manual movement of the unmanned operation vehicle when it is unable to move.

[0003] The unmanned vehicle includes: a driving device powered by a prime mover; a switching device for switching the transmission state between the prime mover and the driving device; and a control system having a control unit that controls the operation of the switching device. Furthermore, it includes: a manual operating tool that can be switched to a usage state allowing human-assisted driving; and a notification means for notifying the control system that the manual operating tool has been switched to the usage state. The control system has an auxiliary control unit that, when it detects that the manual operating tool has been switched to the usage state based on the notification means, controls the operation of the switching device prior to the control unit. Existing technical documents Patent documents

[0004] Patent Document 1: Japanese Patent Publication No. 2016-185134 Summary of the Invention The problem that the invention aims to solve

[0005] However, the work machine disclosed in Patent Document 1 is intended for the operator to lift the work machine when it cannot move, and does not disclose any content related to improving the stability of the work machine while it is in motion or assisting the operator while it is in motion.

[0006] In view of the above, the present invention aims to provide a working machine that can improve the stability of the working machine while it is in motion and can be assisted by the operator while it is in motion. Methods for solving problems

[0007] According to one aspect of the present invention, a work machine is provided, comprising a main body and an operating part; the main body includes a travel motor, an assembly part, and a mounting part; the travel motor is configured to generate rotational power to drive the main body; the assembly part is configured to detachably mount a battery for supplying power to the travel motor; the mounting part is disposed inside a predetermined area formed in a top view of the main body; the predetermined area is a region formed between a first straight line and a second straight line; the first straight line is a straight line passing through the center position of the travel motor in the forward / backward direction, which is the travel direction of the main body, in a left / right direction orthogonal to the forward / backward direction; the second straight line is a straight line passing through the center position of the assembly part in the forward / backward direction in the left / right direction; the operating part is connected to the mounting part and is configured to be operable to assist the driving of the main body.

[0008] This method improves the stability of the machine while it is in motion and allows for assistance from operators during operation. Attached Figure Description

[0009] Figure 1 This is a diagram illustrating an example of the overall structure of the lawnmower 11. Figure 2 This is a perspective view showing the appearance of the lawnmower 11. Figure 3 This is a front view showing the appearance of the lawnmower 11. Figure 4 This is a left-side view showing the appearance of the lawnmower 11. Figure 5 This is a rear view showing the appearance of the lawnmower 11. Figure 6 This is a top view showing the appearance of the lawnmower 11. Figure 7 This is a bottom view omitting some parts of the lawnmower 11. Figure 8 This is a 3D view omitting some parts of the lawnmower 11. Figure 9 This is a top view omitting some parts of the lawnmower 11, used to illustrate the predetermined area AR. Figure 10 This is a top view omitting some parts of the lawnmower 11, used to illustrate the predetermined area AR and predetermined width D. Figure 11 This is a top view omitting some parts of the lawnmower 11. Figure 12 This is a 3D view of the installation section 28. Figure 13 This is a top view omitting some parts of the lawnmower 11, used to illustrate the configuration of the assembly 29. Figure 14 This is a top view omitting some parts of the lawnmower 11, used to illustrate an example with a virtual battery BB. Figure 15 This is a top view omitting some parts of the lawnmower 11, used to illustrate an example of displacement of the assembly 29. Figure 16 This is a top view omitting some parts of the lawnmower 11, used to illustrate an example of the counterweight assembly 293. Explanation of reference numerals in the attached figures 1: Working machine; 11: Lawn mower; 2: Main body; 2a: Upper cover; 2b: Opening and closing part; 2c: Lower support plate; 2d: Position; 21: Travel motor; 22: Traveling part; 23: Working motor; 24: Working part; 24a: Blade; 24b: Blade shaft; 24c: Blade mounting part; 24d: Rotating shaft; 25: Motion control part; 26: Receiving and transmitting part; 27: Communication bus; 28: Mounting part; 281: Switching part; 282: Rotating body; 283: Housing; 283a: Front housing; 283b: Rear housing; 284: Operating lever fixing part; 285: Hinge Chain structure; 29: Assembly section; 291: First assembly section; 292: Second assembly section; 293: Counterweight assembly section; 3: Operation section; 31: Operation lever; 31a: Grip section; 31b: Connecting section; 4: Battery; 5: Remote control; 51: Transceiver section; 52: Input section; 52a: Driving input lever; 52b: Direction input lever; 52c: Blade input lever; 53: Communication bus; AR: Predetermined area; AX1: Central axis; AX2: Predetermined axis; BB: Virtual battery; D: Predetermined width; D2: Width; L: Length; LN1: First straight line; LN2: Second straight line. Detailed Implementation

[0010] Hereinafter, examples of embodiments of the present invention will be described with reference to the accompanying drawings. The various features shown in the following embodiments can be combined with each other.

[0011] Furthermore, in one embodiment, the program for implementing the software may be provided as a non-transitory computer-readable medium, or it may be provided by downloading from an external server, or it may be provided by launching the program on an external computer to implement its functions on a client terminal (i.e., so-called cloud computing).

[0012] Furthermore, in various information processing methods of one embodiment, input and output based on the input can be realized. Here, as long as the output can be obtained as the input result, the form of the information referenced in this information processing (hereinafter referred to as the reference information) is not restricted. Reference information can be, for example, rule-based information such as databases, lookup tables, predefined functions (including judgments constructed through statistical methods, such as regression equations), learned models that have pre-learned the correlation between inputs and outputs, or large language models that can output the desired results by inputting prompt words.

[0013] In another embodiment, "part" may include, for example, a combination of hardware resources implemented by a generalized circuit and information processing software specifically implemented through these hardware resources. Furthermore, in one embodiment, various types of information are processed, such as physical values ​​representing voltage and current, binary bits consisting of 0 or 1 as high or low signal values, or quantum superposition (i.e., so-called qubits), and communication and computation can be performed on a generalized circuit.

[0014] In addition, in a broader sense, a circuit refers to a circuit implemented by at least appropriately combining circuits, circuits, processors, and memory. In addition, the processor can be a general-purpose processor or a dedicated circuit. In other words, it includes Application Specific Integrated Circuits (ASICs), programmable logic devices (e.g., Simple Programmable Logic Devices (SPLDs), Complex Programmable Logic Devices (CPLDs), and Field Programmable Gate Arrays (FPGAs)).

[0015] 1. Overall Structure In the first chapter, the work machine 1 of one embodiment will be described. The work machine 1 is configured to travel in order to perform a predetermined task. The following explanation will be based on the case where the machine 1 is a lawnmower 11.

[0016] Figure 1 This is a diagram illustrating an example of the overall structure of the lawnmower 11. Figure 2 This is a perspective view showing the appearance of the lawnmower 11. Figure 3 This is a front view showing the appearance of the lawnmower 11. Figure 4 This is a left-side view showing the appearance of the lawnmower 11. Figure 5 This is a rear view showing the appearance of the lawnmower 11. Figure 6 This is a top view showing the appearance of the lawnmower 11. Figure 7 This is a bottom view omitting some parts of the lawnmower 11. Figure 8 This is a 3D view omitting some parts of the lawnmower 11. Figure 9This is a top view omitting some parts of the lawnmower 11, used to illustrate the predetermined area AR. Figure 10 This is a top view omitting some parts of the lawnmower 11, used to illustrate the predetermined area AR and predetermined width D. Figure 11 This is a top view omitting some parts of the lawnmower 11. Figure 12 This is a 3D view of the installation section 28.

[0017] In the following description, it will be based on Figures 2 to 12 ( Figures 13 to 16 Similarly, the directions of the lawnmower 1 and the components that make up the lawnmower 11 are defined by the terms "up", "down", "left", "right", "front" and "back" shown in the diagram. In addition, in the following description, "upper" can also be referred to as "upper side" or "above", and "lower" can also be referred to as "lower side" or "below". In addition, the direction formed by up and down is called "up and down" or "up and down direction". These correspondences also apply to "left", "right", "front", and "back".

[0018] (Lawnmower 11) like Figure 1 and Figure 2 As shown, the lawnmower 11, which is the working machine 1, includes a main body 2, an operating unit 3, a battery 4, and a remote control 5. The lawnmower 11 has both driving and working functions, allowing it to perform lawn mowing operations while driving.

[0019] (Main Body 2) like Figure 1 and Figure 8 As shown, the main body 2 includes a travel motor 21, a travel unit 22, a work motor 23, a work unit 24, a motion control unit 25, a transceiver unit 26, a communication bus 27, a mounting unit 28, and an assembly unit 29.

[0020] like Figure 2 and Figure 8 As shown, the main body 2 has an upper cover 2a and a lower support plate 2c. like Figures 2 to 6 As shown, the upper cover 2a is in the shape of a cover and is configured to cover the components constituting the main body 2 that are mounted on the lower support plate 2c from above. The lower support plate 2c is mechanically connected to the various components constituting the main body 2, namely the travel motor 21, travel unit 22, work motor 23, work unit 24, motion control unit 25, transceiver unit 26, communication bus 27, mounting unit 28, and assembly unit 29. In addition, such as Figure 2 and Figure 6 As shown, the upper cover 2a has an opening and closing part 2b that can be opened and closed. By opening the opening / closing part 2b, the components constituting the main body part 2, which are covered by the upper cover 2a, can be inspected or operated. That is, regarding the opening and closing part 2b, it is not necessary to remove the upper cover 2a from the lawnmower 11 to check or operate each component. In addition, the lower support plate 2c is plate-shaped and is positioned below the upper cover 2a.

[0021] The travel motor 21 is an electric motor configured to generate rotational power that drives the main body 2. like Figure 8 As shown, specifically in the lawnmower 11, a total of two drive motors 21 are arranged on the left and right sides of the rear of the lower support plate 2c. The travel motor 21 has an output shaft, which is mechanically connected to the travel unit 22 via a chain, gears, etc. (not shown) or directly. The driving unit 22 obtains rotational power from the driving motor 21, thereby enabling the lawnmower 11 to move. like Figures 3 to 5 As shown, the traveling unit 22 in the lawnmower 11 is an infinite track, such as a track (registered trademark). Note that the travel unit 22 is not limited to an infinite track; for example, it could also be a tire.

[0022] The operating motor 23 is an electric motor configured to generate rotational power for mowing operations. like Figure 8 As shown, specifically, in the lawnmower 11, two working motors 23 are arranged on the left and right sides of the lower support plate 2c, roughly in the center in the front-rear direction. The working motor 23 is mechanically connected to the working unit 24 via a chain, gears, etc. (not shown) or directly. The work unit 24 obtains rotational power from the work motor 23 to perform the predetermined work. like Figure 7 As shown, in the lawnmower 11, the working part 24 rotates by the rotational power of the working motor 23, thereby being able to cut grass and trees. Specifically, the working section 24 includes a blade 24a, a blade shaft 24b, a blade assembly section 24c, and a rotating shaft 24d, and is a working section 24 in the form of a free knife. In detail, the blade 24a is plate-shaped and rotates around the rotating shaft 24d via the blade assembly part 24c, cutting the grass and trees it comes into contact with as the lawnmower 11 moves. The blade assembly 24c is elliptical in shape, with a rotating shaft 24d connected to its approximate center, and rotates on a surface defined by front, back, left, and right. In addition, the blade assembly 24c has a blade shaft 24b at both ends in the length direction, and a blade 24a is connected to the upper and lower sides of each blade shaft 24b. In addition, the blade 24a is also mounted on the blade assembly part 24c on the blade shaft 24b, and rotates within a predetermined range with the blade shaft 24b as the center. Note that the work section 24 is not limited to the form of a free blade. For example, it can also be made of resin rope such as nylon rope, metal blades (spool blades, serrated blades, grass shredders, etc.), reciprocating blades, etc.

[0023] like Figure 1 As shown, the power supply from the battery 4 to the travel motor 21 and the work motor 23 is controlled by the motion control unit 25. That is, the motion control unit 25 is electrically connected to the travel motor 21, the work motor 23 and the battery 4 through wiring and connectors, and controls the power supply from the battery 4 to the travel motor 21 and the work motor 23. Thus, the motion control unit 25 is configured to electrically control the rotation of the travel motor 21 and the work motor 23. In addition, the motion control unit 25 and the transceiver unit 26 are electrically connected via the communication bus 27. The transceiver unit 26 has wireless communication capabilities and communicates wirelessly with the remote controller 5. Note that details about battery 4 and remote control 5 will be described later.

[0024] like Figure 9 As shown, the mounting part 28 is box-shaped and is disposed inside the predetermined area AR formed in the top view of the main body part 2. Specifically, such as Figure 9 As shown, the mounting part 28 is positioned approximately at the center of the lower inner support plate 2c of the predetermined area AR. Note that the mounting part 28 is not limited to being located at approximately the center of the lower support plate 2c; it can be located as long as it is inside the predetermined area AR, or it can be offset in the front-back direction, left-right direction, etc. also, Figure 9 The predetermined region AR is formed between the first straight line LN1 and the second straight line LN2. That is, in this case, the predetermined region AR is the region formed between the first straight line LN1 and the second straight line LNLN2. Here, the first straight line LN1 is a straight line passing through the center position of the driving motor 21 in the left-right direction, which is orthogonal to the front-back direction, and in the front-back direction, which is the driving direction of the main body 2. Furthermore, the second straight line LN2 is a straight line that passes through the center position of the assembly part 29 in the left-right direction and the front-back direction. In this way, the stability of the lawnmower 11 while it is in motion can be improved, and it can also support the operator to provide assistance while the machine is in motion. The battery and the drive motor are both heavy-duty components that have a significant impact on the center of gravity of the entire lawnmower 11. In this embodiment, these components are arranged at the front and rear of the vehicle body. In a lawnmower 11 with a working section 24 located in the center of the main body, this configuration prevents the main body from tilting up regardless of the direction in which the lawnmower 11 travels. More specifically, by setting the drive source as the driving motor 21 and the battery 4, reciprocating travel can be easily achieved by switching the rotation direction of the driving motor 21 in both directions (generally speaking, the direction of the output shaft cannot be changed in an engine-driven system, so switching in both directions would complicate the transmission structure). The lawnmower 11 has the great advantage of being able to easily travel in any direction of travel, but if the weight is placed in the center of the vehicle body as in Patent Document 1, the vehicle body may tilt depending on the direction of travel. In the self-propelled lawnmower 11 of this embodiment, by placing the weights at positions closer to the front and rear of the direction of travel than the working section 24, the vehicle body can be properly prevented from tilting up regardless of the direction of travel, thus stabilizing the mowing operation. Given this configuration, when further considering the position of the mounting part 28, its position may increase the burden on the operator holding the end of the operating part 3. In particular, the impact is more pronounced when using the lawnmower 11 on a slope. For example, as in Patent Document 1, the installation part 28 at the end of the main body 2 increases the burden on the operator in terms of assistance. In this embodiment, by placing the mounting part 28 inside the predetermined area AR defined by the center position of the driving motor 21 and the center position of the battery 4, the burden on the operator to hold the operating part 3 can be reduced regardless of the driving direction or environment (slope).

[0025] In addition, such as Figure 10 As shown, the predetermined region AR is preferably configured to have a predetermined width D extending to the left and right from the center line in the left-right direction. In this case, each predetermined width D is preferably less than 20% of the width D2 of the main body portion 2 in the left-right direction. In this way, even when turning, especially when turning on the spot, the stability of the lawnmower 11 can be further improved, and the operator can provide assistance while driving.

[0026] like Figure 12 As shown, the mounting part 28 includes a switching part 281, a rotating body 282, a housing 283, and an operating lever fixing part 284.

[0027] The switching unit 281 is configured to be detached from the mounting unit 28 by moving it upward from the state in which it is mounted on the housing 283. By removing the switching part 281, the mounting angle of the mounting part 28 can be changed with the central axis AX1 of the mounting part 28 as the center. On the other hand, the mounting part 28 is fixed with the central axis AX1 of the mounting part 28 as the center by the mounting switching part 281. Note that the central axis AX1 is the axis in the vertical direction.

[0028] Furthermore, the rotating body 282 is disc-shaped and configured to rotate while housed in the housing 283. The rotation of the rotating body 282 can be allowed or restricted depending on the installation or removal of the switching unit 281. like Figure 12 As shown, housing 283 has a front housing 283a and a rear housing 283b. The housing 283 contains a rotating body 282 that can rotate about the central axis AX1.

[0029] like Figure 12 As shown, the operating lever fixing part 284 is cylindrical and is located above the mounting part 28, configured to connect to the operating part 3. In addition, the operating lever fixing part 284 is connected to the rotating body 282 so as to rotate about a predetermined axis AX2. This forms the hinge structure 285. That is, the hinge structure 285 is configured such that the operating part 3 connected to the mounting part 28 rotates around a predetermined axis AX2 as a fulcrum.

[0030] like Figure 8 As shown, the assembly part 29 is plate-shaped and is configured to detachably mount the battery 4 for supplying power to the driving motor 21. In addition, the assembly section 29 has a first assembly section 291 and a second assembly section 292. The first assembly part 291 and the second assembly part 292 are arranged at approximately the center of the front of the lower support plate 2c in the left-right direction. The first assembly part 291 and the second assembly part 292 are inclined in such a way that they approach the lower support plate 2c from the front to the rear. Note that details about battery 4 will be provided later.

[0031] (Operations Section 3) like Figure 2 As shown, the main body 2 is configured to be connected to the operation unit 3 via the mounting part 28. Thus, the operating unit 3 is connected to the mounting unit 28, and is configured to be operable to assist the movement of the main body unit 2. Operation unit 3 is operation lever 31. In this way, the main body 2 can be operated directly via the operating lever 31. Furthermore, by utilizing the rigid height of the operating lever 31 as an auxiliary action of the operating lever 31, in addition to the operation of pulling the main body 2, it can also handle various operation modes of the main body 2 without increasing the burden on the operator, such as the operator pushing the main body 2 from behind, and maintaining the center of rotation without moving the operating part during rotation. In addition, the operating lever 31 has a gripping part 31a and a connecting part 31b.

[0032] The grip 31a is integrated with the remote control 5 and is in the shape of a ring. The grip is achieved by inserting the operator's hand into the inside of the ring. like Figure 2 As shown, the connecting part 31b is connected to the lower part of the gripping part 31a. The connecting part 31b is tubular and connects the mounting part 28 and the gripping part 31a. That is, the control lever 31 is connected to the main body 2 via the mounting part 28, and is configured to be held to assist the movement of the main body 2. Figure 2 The connecting part 31b shown is of fixed length and cannot be extended or retracted, but it is not limited to this; for example, it may also be equipped with a telescopic mechanism. Details about Remote Control 5 will be provided later.

[0033] (Battery 4) like Figure 8 and Figure 11 As shown, the battery 4 is detachably mounted on the first assembly part 291 and the second assembly part 292 (assembly part 29). That is, the battery 4 is positioned on the front of the lower support plate 2c, approximately in the center in the left-right direction. Battery 4 consists of a cuboid shell that houses secondary batteries such as lithium-ion rechargeable batteries. Battery 4 is a battery pack that can be installed and removed by sliding relative to the assembly part 29 in the front-back direction. Note that two batteries 4 are installed in the lawnmower 11, but it is not limited to this. It may also be equipped with one or more mounting parts 29, and the batteries 4 may be installed in the mounting parts 29.

[0034] Furthermore, the lawnmower 11 is configured to load and unload the battery 4 by opening and closing the opening and closing part 2b of the upper cover 2a. That is, the lawnmower 11 is configured such that the battery 4 can be installed or removed by opening and closing the opening and closing part 2b without removing the upper cover 2a from the lawnmower 11.

[0035] (Remote Control 5) like Figure 1 As shown, the remote controller 5 includes a transceiver unit 51 and an input unit 52. The transceiver unit 51 and the input unit 52 are electrically connected via a communication bus 53. like Figure 2 As shown, the remote control 5 and the grip part 31a of the operation unit 3 are integrally formed. Remote controller 5 is a controller with wireless communication capabilities, configured to control lawnmower 11 based on user operations. Alternatively, the remote control 5 can also be configured to be detachable from the grip portion 31a of the operation unit 3.

[0036] The transceiver unit 51 transmits the signal generated by the input unit 52 to the transceiver unit 26 via wireless communication. That is, the transceiver unit 26 receives the signal generated by the input unit 52 from the transceiver unit 51 via wireless communication. The motion control unit 25 performs control based on the signals received by the transceiver unit 26.

[0037] like Figure 6 As shown, the input unit 52 includes a driving input lever 52a, a direction input lever 52b, and a blade input lever 52c. The driving input lever 52a is an operating means for increasing or decreasing the driving speed of the main body 2. The driving input lever 52a is configured to control the driving speed of the main body 2 via a drive switch (not shown). In addition, the direction input lever 52b is an operating means for controlling the driving direction of the main body 2. In addition, the blade input lever 52c is an operating means for switching the operation unit 24 to rotate on / off.

[0038] 2. The position of the center of gravity of the main body 2 In this section, the position of the center of gravity of the main body 2 in one embodiment will be explained.

[0039] like Figure 11 As shown, with the battery 4 installed in the assembly part 29, the center of gravity of the main body 2 is located at position 2d. Furthermore, the mounting part 28 is configured to include position 2d inside the main body part 2 or the lower support plate 2c in a top view (hereinafter also referred to as "top view"). That is, with the battery 4 assembled in the mounting part 29, the mounting part 28 is positioned at or near the center of gravity of the main body 2 in the top view of the main body 2. In this specification, the vicinity of the center of gravity is defined as the area inside a circle with a predetermined radius centered on the position of the center of gravity. The predetermined radius can be a value obtained by multiplying the length L of the diagonal of the main body 2 by a predetermined ratio. The predetermined proportion is, for example, 15%, preferably 7%, and more preferably 2%. Specifically, for example, the predetermined percentage can be 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, or 15%, and can be within the range of any two values ​​shown herein. Furthermore, the mounting part 28 can also be configured to exclude position 2d within the range inside the aforementioned circle. In this way, by connecting (installing) the operating part used to assist the movement of the main body 2 at a position corresponding to the center of gravity of the main body 2, the operability of the lawnmower 11 can be improved. Notice, Figure 11 The position 2d shown is located approximately at the center of the main body 2 in the top view, but it is not limited to this. Within the aforementioned range, it can be offset in the front-back direction, the left-right direction, or the diagonal direction.

[0040] like Figure 11 As shown, the main body 2 is approximately square in the top view, and preferably the center of gravity is located at approximately the center of the approximately square (e.g., the intersection of the diagonals). That is, with the battery 4 assembled in the assembly part 29, the main body 2 is preferably configured such that its center of gravity is located approximately at the center of the main body 2 in the top view of the main body 2. In this case, the mounting section 28 is positioned approximately in the center of the main body section 2. In this way, when driving, especially on a slope, the main body 2 can be operated more easily through the operating unit 3 without increasing the burden on the operators. This improves the stability of the lawnmower 11 during operation.

[0041] In addition, such as Figure 11 As shown, the travel motor 21 is positioned off-center behind the lower support plate 2c in the top view. Furthermore, the first assembly part 291 and the second assembly part 292, which are assembly parts 29, are disposed biasedly in front of the lower support plate 2c in the top view. That is, the driving motor 21 is biased on one side of the main body 2 in the driving direction, i.e., the front-to-back direction, and the mounting part 29 is biased on the other side in the front-to-back direction. In this way, the weight balance of the lawnmower 11 can be further optimized, and the vehicle body can be properly prevented from tilting regardless of the direction of travel of the lawnmower 11.

[0042] like Figure 11 As shown, the first assembly part 291 and the second assembly part 292 are arranged near the center in the left-right direction. In this way, the weight balance of the lawnmower 11 can be optimized. This allows the lawnmower 11 to travel more stably. Furthermore, since the battery 4 is positioned close to the ground, the opening and closing part 2b can be compactly constructed while the battery 4 can be easily disassembled and installed.

[0043] [other] The work machine 1 according to one embodiment can also be implemented in the following ways.

[0044] In the above embodiment, the example of the working machine 1 being a lawnmower 11 is used, but it is not limited to this. For example, the processing machine 1 can be a recycling machine (not shown) or a distributing machine (not shown). In this way, more user-friendly recycling machines or scattering machines can be used to perform the scheduled tasks separately.

[0045] Figure 13 This is a top view omitting some parts of the lawnmower 11, used to illustrate the configuration of the assembly 29.

[0046] exist Figure 11 In the embodiment shown, the first assembly part 291 and the second assembly part 292 are arranged near the center in the left-right direction as an example, but it is not limited to this. For example, such as Figure 13 As shown, the first assembly part 291 and the second assembly part 292 can be arranged separately in the left and right directions in the top view of the main body part 2. This approach is particularly advantageous in structures that require a large battery 4 or can accommodate multiple batteries 4 of different sizes.

[0047] Figure 14 This is a top view omitting some parts of the lawnmower 11, used to illustrate an example with the virtual battery BB installed.

[0048] exist Figure 11 The illustrated embodiment uses a lawnmower 11 equipped with two batteries 4 as an example, but is not limited to this. For example, it is preferable to install a virtual battery BB on the assembly section 29. like Figure 14 As shown, specifically, it is preferable to assemble the battery 4 on the first assembly part 291 and the virtual battery BB on the second assembly part 292. The virtual battery BB is designed to have the same weight as battery 4. In other words, the preferred configuration is that the battery 4 is installed in one of the first assembly part 291 and the second assembly part 292, and a virtual battery BB with the same weight as the battery 4 is installed in the other part. In this way, regardless of the number of batteries 4 installed, the center of gravity of the main body 2 can be adjusted to a predetermined position. This ensures that the lawnmower 11 remains operable.

[0049] Figure 15 This is a top view omitting some parts of the lawnmower 11, used to illustrate an example of displacement of the assembly 29.

[0050] exist Figure 11 The embodiment shown is illustrated using the example of fixing the position of the assembly part 29, but it is not limited to this. For example, the position of the assembly part 29 is preferably configured to be movable according to the number, shape, weight, etc. of the batteries 4 installed in the assembly part 29. That is, the main body 2 is preferably configured to allow the position of the assembly part 29 to be displaced. like Figure 15 As shown, specifically, when the battery 4 is assembled only on the first assembly part 291, it is preferable to shift the assembly part 29 to the right. In this way, regardless of the number, shape, and weight of the installed batteries 4, the center of gravity of the main body 2 can be adjusted to a predetermined position. This ensures that the lawnmower 11 remains operable.

[0051] Figure 16 This is a top view omitting some parts of the lawnmower 11, used to illustrate an example of the counterweight assembly 293.

[0052] exist Figure 11 The embodiment shown is illustrated using a lawnmower 11 equipped with two batteries 4 as an example, but it is not limited to this. For example, depending on the number, shape, weight, etc. of the installed batteries 4, it is preferable to install a counterweight on the main body 2. This counterweight is used to adjust the center of gravity of the main body 2. That is, the main body 2 preferably has a counterweight assembly 293 for detachably mounting a counterweight for adjusting its center of gravity position. like Figure 16As shown, specifically, when the battery 4 is assembled only on the first assembly part 291, it is preferable to install the counterweight on the counterweight assembly part 293. In this way, regardless of the number, shape, weight, etc. of the installed batteries 4, the center of gravity of the main body 2 can be adjusted to a predetermined position. This ensures that the lawnmower 11 remains operable.

[0053] In the above embodiment, the operation unit 3 is described as an operation lever 31, but it is not limited to this. For example, the operation unit 3 may also be a rope connected to the mounting part 28. In this case, the lawnmower 11 is preferably operated using the remote control 5 removed from the grip 31a of the operation unit 3. In this way, the working range of the lawnmower 11 can be easily changed.

[0054] In addition, it can also be provided through the various methods described below.

[0055] (1) A work machine, comprising: a main body and an operating part; the main body includes a travel motor, an assembly part, and a mounting part; the travel motor is configured to generate rotational power to drive the main body; the assembly part is configured to detachably mount a battery for supplying power to the travel motor; the mounting part is disposed inside a predetermined area formed in a top view of the main body; the predetermined area is a region formed between a first straight line and a second straight line; the first straight line is a straight line passing through the center position of the travel motor in the forward-backward direction, which is the travel direction of the main body, in a left-right direction orthogonal to the forward-backward direction; the second straight line is a straight line passing through the center position of the assembly part in the forward-backward direction in the left-right direction; the operating part is connected to the mounting part and is configured to be operable to assist the driving of the main body.

[0056] This method can improve the stability of the machine while it is in motion and support the operator in providing assistance while the machine is in motion.

[0057] (2) The working machine according to (1) above, wherein the predetermined area has a predetermined width to the left and to the right from the center line in the left and right directions, and each predetermined width is less than 20% of the width of the main body in the left and right directions.

[0058] This method can improve the stability of the machine while it is in motion and support the operator in providing assistance while the machine is in motion.

[0059] (3) The working machine according to (1) or (2) above, wherein the mounting part is arranged at or near the center of gravity of the main body in the top view of the main body when the battery is mounted on the assembly part.

[0060] In this way, the operability of the work machine can be improved by connecting (installing) the operating part that assists in driving the main body at a position corresponding to the center of gravity of the main body.

[0061] (4) The working machine according to any one of (1) to (3) above, wherein the main body is configured such that the center of gravity is located approximately at the center of the main body in a top view of the main body when the battery is installed in the assembly part.

[0062] In this way, the main body can be operated more easily through the control unit while driving, especially on slopes, without increasing the burden on the operators. This can improve the stability of the machine while it is in motion.

[0063] (5) The work machine according to any one of (1) to (4) above, wherein the travel motor is configured to be biased to one side of the front-rear direction, and the assembly part is configured to be biased to the other side of the front-rear direction.

[0064] This method can further optimize the weight balance of the lawnmower and effectively prevent the mower from tilting up regardless of its direction of travel.

[0065] (6) The work machine according to any one of (1) to (5) above, wherein the assembly part has a first assembly part and a second assembly part, the first assembly part and the second assembly part being separately arranged in the left-right direction in the top view of the main body.

[0066] This approach is particularly advantageous in structures that require large batteries or can accommodate multiple batteries of different sizes.

[0067] (7) The work machine according to (6) above, wherein the first assembly part and the second assembly part are arranged close to the center in the left-right direction.

[0068] In this way, the weight balance of the machine can be optimized. As a result, the machine can operate more stably. Furthermore, due to the close proximity of the batteries, it is easy to remove and install multiple batteries.

[0069] (8) The working machine according to (6) or (7) above, wherein the battery is configured to be assembled in one of the first assembly part and the second assembly part, and a virtual battery of the same weight as the battery is assembled in the other part.

[0070] In this way, regardless of the number of batteries installed, the center of gravity of the main body can be adjusted to the predetermined position. This allows the machine to remain operational.

[0071] (9) The working machine according to any one of (1) to (8) above, wherein the main body is configured to allow the position of the assembly part to be displaced.

[0072] In this way, regardless of the number, shape, or weight of the installed batteries, the center of gravity of the main body can be adjusted to a predetermined position. This allows the machine to remain operational.

[0073] (10) The working machine according to any one of (1) to (9) above, wherein the main body further includes a counterweight assembly capable of detachably mounting a counterweight for adjusting its center of gravity position.

[0074] In this way, regardless of the number, shape, or weight of the installed batteries, the center of gravity of the main body can be adjusted to a predetermined position. This allows the machine to remain operational.

[0075] (11) The working machine according to any one of (1) to (10) above, wherein the operating part is an operating lever.

[0076] In this way, the main body can be operated directly using a joystick.

[0077] (12) The operating machine according to any one of (1) to (11) above, wherein the operating machine is a lawn mower, a recycling machine or a spreader.

[0078] In this way, more maneuverable lawnmowers, reclaimers, or spreaders can be used to perform the scheduled tasks separately. Of course, it's not limited to this.

[0079] In summary, although various embodiments of the present invention have been described, they are provided by way of example only and are not intended to limit the scope of the invention. This novel implementation can be carried out in various other forms and can be omitted, replaced, or modified in various ways without departing from the spirit of the invention. The embodiments and their variations are all included within the scope and spirit of this invention, and are included within the scope of the invention described in the claims and their equivalents.

Claims

1. A work machine, comprising: Main body and operating section; The main body includes a driving motor, an assembly part, and a mounting part; The driving motor is configured to generate rotational power that causes the main body to move; The assembly is configured to allow for the detachable installation of a battery for supplying power to the drive motor; The mounting part is disposed inside a predetermined area formed in the top view of the main body; The predetermined area is the area formed between the first straight line and the second straight line; The first straight line is a straight line passing through the center position of the travel motor in the left-right direction, which is the travel direction of the main body, in the left-right direction orthogonal to the front-back direction; The second straight line is a straight line passing through the center position of the assembly part in the left-right direction; The operating part is connected to the mounting part and is configured to be operable to assist the movement of the main body.

2. The work machine according to claim 1, wherein, The predetermined region has a predetermined width extending to the left and right from the center line in the left and right directions, and each predetermined width is less than 20% of the width of the main body in the left and right directions.

3. The work machine according to claim 1 or 2, wherein, The mounting part is positioned at or near the center of gravity of the main body in a top view of the main body, with the battery mounted on the assembly part.

4. The operating machine according to any one of claims 1 to 3, wherein, With the battery installed in the assembly, the main body is configured such that its center of gravity is located approximately at the center of the main body in a top view.

5. The operating machine according to any one of claims 1 to 4, wherein, The travel motor is configured to be biased to one side in the forward and backward direction. The assembly part is positioned to the opposite side of the front-rear direction.

6. The operating machine according to any one of claims 1 to 5, wherein, The assembly section has a first assembly section and a second assembly section. The first assembly part and the second assembly part are arranged separately in the left-right direction in the top view of the main body.

7. The work machine according to claim 6, wherein, The first assembly part and the second assembly part are arranged close to the center in the left-right direction.

8. The operating machine according to claim 6 or 7, wherein, The battery is configured to be assembled on one of the first assembly part and the second assembly part, and a virtual battery of the same weight as the battery is assembled on the other part.

9. The operating machine according to any one of claims 1 to 8, wherein, The main body is configured to allow for positional displacement of the assembly part.

10. The operating machine according to any one of claims 1 to 9, wherein, The main body also includes a counterweight assembly that can be detachably mounted with a counterweight for adjusting its center of gravity position.

11. The work machine according to any one of claims 1 to 10, wherein, The operating part is an operating lever.

12. The operating machine according to any one of claims 1 to 11, wherein, The machine in question is a lawnmower, a recycling machine, or a spreader.

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