Working machinery

Abstract

The present invention provides a work machine that can avoid the display device interfering with the operator's forward view and the operator's operation of the console. [Solution] A hydraulic excavator as a work machine is a work machine equipped with an operating section and a display device. The operating section has an operating seat, a side window positioned on one side of the operating section in the width direction relative to the operating seat, and a console section positioned between the operating seat and the side window in the width direction. The display device is positioned at a predetermined distance above the console section and facing the side window.

Description

Technical Field

[0001] The present invention relates to a work machine.

Background Art

[0002] A work machine provided with a display device is conventionally known (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In Patent Document 1, the display device is provided on the front side of the right side surface of a cab serving as an operator's compartment. Therefore, the display device is positioned to the front right of a driver's seat (operator seat) provided inside the cab. For this reason, the display device may obstruct the forward visibility of the operator seated in the driver's seat, and there is a risk that the operator's forward visibility will deteriorate.

[0005] Meanwhile, for example, in a small-sized work machine, a console unit for performing settings of each part of the work machine may be disposed in the left-right direction gap between the right side surface of the cab and the driver's seat. Since the operator operates the console unit at appropriate timings, it is desired to arrange the display device at a position that is less likely to get in the way when the operator operates the console unit.

[0006] The present invention has been made to solve the above problems, and an object thereof is to provide a work machine that can prevent the display device from obstructing the operator's forward visibility and the operator's operation of the console unit.

Means for Solving the Problems

[0007] A working machine according to one aspect of the present invention is a working machine comprising an operating unit and a display device, wherein the operating unit has an operating seat, a side window positioned on one side of the operating unit in the width direction relative to the operating seat, and a console section positioned between the operating seat and the side window in the width direction, and the display device is positioned at a predetermined distance above the console section and facing the side window. [Effects of the Invention]

[0008] With the above configuration, it is possible to avoid the display device interfering with the operator's forward view and the operator's operation of the console. [Brief explanation of the drawing]

[0009] [Figure 1] This is a left side view showing a schematic configuration of a hydraulic excavator, which is an example of a work machine according to one embodiment of the present invention. [Figure 2] This is a front view showing the general configuration of the hydraulic excavator described above. [Figure 3] This is a rear view showing the general configuration of the hydraulic excavator described above. [Figure 4] This is a right side view showing the schematic configuration of the hydraulic excavator. [Figure 5] This is a schematic block diagram showing the configuration of the obstacle detection and warning system installed in the hydraulic excavator described above. [Figure 6] This is a perspective view from the front left showing the configuration of the operating section of the hydraulic excavator described above. [Figure 7] This is a magnified view of the area around the driver's seat in the above-mentioned control unit, from the front left. [Figure 8] This is a perspective view from the front right showing the configuration of the driver's cabin. [Figure 9] This is a left side view showing the placement of the display device for the obstacle detection and warning system described above. [Figure 10] This is a perspective view from the right rear showing the holding configuration of the above-mentioned display device. [Figure 11]This is an explanatory diagram illustrating the method for attaching the holding part that holds the above-mentioned display device. [Modes for carrying out the invention]

[0010] Embodiments of the present invention will be described below with reference to the drawings.

[0011] [1. Outline configuration of the work machine] Figures 1, 2, 3, and 4 are left side view, front view, rear view, and right side view, respectively, showing the schematic configuration of a hydraulic excavator 1, which is an example of a work machine according to one embodiment of the present invention. In Figure 4, for convenience, the working machine 3, which will be described later, is omitted from the illustration. The hydraulic excavator 1 comprises a lower traveling body 2, a working machine 3, and an upper rotating body 4.

[0012] Here, the directions in this embodiment are defined as follows: The direction in which the operator (driver, operator) seated in the driver's seat 461 located in the driver's section 46 of the upper slewing body 4 faces forward is defined as "forward," and the opposite direction is defined as "rear." When the upper slewing body 4 is not slewing relative to the lower traveling body 2 (slewing angle 0 degrees), the front-rear direction of the upper slewing body 4 coincides with the front-rear direction of the lower traveling body 2. The drawing shows the hydraulic excavator 1 in the state where the upper slewing body 4 is not slewing relative to the lower traveling body 2. Also, the left side as seen from the operator seated in the driver's seat 461 is defined as "left," and the right side as "right." Furthermore, the direction of gravity perpendicular to the front-rear and left-right directions is defined as the up-down direction, with the upstream side of the direction of gravity being defined as "up," and the downstream side being defined as "down." In the drawings, the front is indicated by the symbol "F", the rear by "B", the left by "L", the right by "R", the top by "U", and the bottom by "D", as needed.

[0013] The lower traveling body 2 includes a pair of left and right crawlers 21, a pair of left and right traveling motors 22, and a blade 23. The left and right traveling motors 22 drive the left and right crawlers 21 respectively, so that the hydraulic excavator 1 can move forward and backward. The traveling motor 22 is constituted by a hydraulic motor. The blade 23 for performing grading work and the like is provided on the front side of the lower traveling body 2. The blade 23 is rotated by a blade cylinder 231 constituted by a hydraulic cylinder. The base end portion of the blade cylinder 231 is connected to the blade 23.

[0014] The work implement 3 includes a boom 31, an arm 32, and a bucket 33. By independently driving the boom 31, the arm 32, and the bucket 33, excavation work of earth and sand and the like can be performed.

[0015] The base end portion of the boom 31 is rotatably connected to a swing bracket 41 located at the front portion of the upper revolving structure 4, and is rotated by a boom cylinder 311. The base end portion of the boom cylinder 311 is supported by the swing bracket 41, and is movable in a telescopic manner.

[0016] The base end portion of the arm 32 is rotatably connected to the tip end portion of the boom 31, and is rotated by an arm cylinder 321. The base end portion of the arm cylinder 321 is supported by the boom 31, and is movable in a telescopic manner.

[0017] The base end portion of the bucket 33 is rotatably connected to the tip end portion of the arm 32 via a quick hitch 34, and is rotated by a bucket cylinder 331. The base end portion of the bucket cylinder 331 is supported by the arm 32, and is movable in a telescopic manner. The boom cylinder 311, the arm cylinder 321, and the bucket cylinder 331 are each constituted by a hydraulic cylinder.

[0018] The quick hitch 34 is configured to allow the attachment of buckets 33 and other attachments to be attached and detached. Other examples of attachments include breakers and grapples. For example, if a breaker is attached, it can be used to break up rock, and if a grapple is attached, it can be used to grip and load timber, etc.

[0019] The upper slewing body 4 is located above the lower traveling body 2 and is rotatably mounted relative to the lower traveling body 2 via a slewing bearing (not shown). The upper slewing body 4 includes a swing bracket 41, a slewing frame 42, a slewing motor 43, a counterweight 44, a machine room 45, an operating unit 46, and an obstacle detection and warning system 5. In other words, the hydraulic excavator 1 includes a swing bracket 41, a slewing frame 42, a slewing motor 43, a counterweight 44, a machine room 45, an operating unit 46, and an obstacle detection and warning system 5.

[0020] The upper rotating body 4 rotates via the aforementioned rotating bearings, driven by a rotating motor 43 located on the rotating frame 42. The rotating motor 43 is a hydraulic motor.

[0021] The slewing frame 42 is positioned at the bottom of the upper slewing body 4 and functions as the base for the upper slewing body 4. More specifically, the slewing frame 42 is composed of multiple metal members joined together by welding or the like. The front end of the slewing frame 42 supports the swing bracket 41 so that it can rotate (swing) in the left-right direction. The swing bracket 41 is rotated by a swing cylinder 411. The swing cylinder 411 is a hydraulic cylinder and is movable so as to be able to extend and retract. The base end of the swing cylinder 411 is supported on the left rear of the upper slewing body 4, and the tip end is supported on the left side of the swing bracket 41. When the swing cylinder 411 extends and retracts, the swing bracket 41 rotates in the left-right direction relative to the slewing frame 42. As a result, the work machine 3 rotates in the left-right direction relative to the upper slewing body 4.

[0022] The rear end of the slewing frame 42 supports the counterweight 44. The counterweight 44 is a weight that helps maintain good weight balance in the front-rear direction of the hydraulic excavator 1, especially during excavation work.

[0023] The engine 451 is housed in the machine room 45. The engine 451 is the power source for the hydraulic excavator 1. The engine 451 is a diesel engine, but is not limited to this, and may be a gasoline engine, for example. The power source for the hydraulic excavator 1 is not limited to the engine 451, and may be an electric motor driven by electricity, for example.

[0024] The machine room 45 houses the engine 451 and a hydraulic pump 452 driven by the engine 451. The hydraulic pump 452 consists of a variable displacement pump and a fixed displacement pump. The hydraulic pump 452 supplies hydraulic fluid (pressurized oil) to the hydraulic motors and hydraulic cylinders. The hydraulic motors are, for example, the left and right travel motors 22 and the slewing motor 43. The hydraulic cylinders are, for example, the blade cylinder 231, boom cylinder 311, arm cylinder 321, bucket cylinder 331, and swing cylinder 411. In this embodiment, the hydraulic motors and hydraulic cylinders driven by hydraulic fluid are collectively called hydraulic actuators.

[0025] Furthermore, the hydraulic fluid is supplied from the hydraulic pump 452 to the hydraulic actuator via a control valve (not shown). This control valve is a directional control valve that controls the flow direction and flow rate of the hydraulic fluid supplied to the hydraulic actuator.

[0026] The hydraulic excavator 1 may be configured to use both a hydraulic actuator and an electric actuator driven by electricity, or it may be configured to use an electric actuator instead of a hydraulic actuator. Examples of electric actuators include an electric travel motor, an electric cylinder, and an electric slewing motor.

[0027] The operator's compartment 46 is a space for the operator to board and operate (control) the hydraulic excavator 1, and is located in the upper left part of the upper slewing body 4. In particular, the operator's compartment 46 is positioned so that its width (left-right direction) is aligned with the left-right direction of the upper slewing body 4 (i.e., the left-right direction of the hydraulic excavator 1). Furthermore, the operator's compartment 46 is positioned to the left of the work implement 3, which is located in the center of the left-right rotation range (swing range) (see Figures 2 and 3 in particular). Therefore, the work implement 3 is positioned on one side of the operator's compartment 46 in the width direction (to the right in this embodiment). The configuration of the operator's compartment 46 will be described later.

[0028] The obstacle detection and warning system 5 is a system that aims to improve the safety of the hydraulic excavator 1 (the safety of various operations using the hydraulic excavator 1) by suppressing contact between the hydraulic excavator 1 and obstacles located around the hydraulic excavator 1 (rear and to the right in this embodiment). The above-mentioned obstacles include objects to be monitored such as people, objects, and animals.

[0029] The obstacle detection and warning system 5 comprises a monitoring device 51 and an alarm device 52. The alarm device 52 includes an indicator light 521. The monitoring device 51 and the indicator light 521 are mounted on the upper right rear side of the driver's unit 46 via a mounting bracket 5B, which is made by processing a metal plate-like member appropriately (bending, cutting, drilling, etc.). The details of the configuration of the obstacle detection and warning system 5 will be described below.

[0030] [2. Configuration of the Obstacle Detection and Warning System] Figure 5 is a schematic block diagram showing the configuration of the obstacle detection and warning system 5. The obstacle detection and warning system 5 includes a monitoring device 51 and an alarm device 52, as well as a control device 53, a switching device 54, and a display device D1. Similar to the monitoring device 51 and the alarm device 52, the control device 53, the switching device 54, and the display device D1 are all located on the upper rotating body 4. In other words, the hydraulic excavator 1 is equipped with a monitoring device 51, an alarm device 52, a control device 53, a switching device 54, and a display device D1.

[0031] The monitoring device 51 is configured to include a monitoring sensor that monitors the surroundings by acquiring information about the area around the hydraulic excavator 1. In this embodiment, the monitoring sensor is composed of a rear camera 511 that photographs the area behind the hydraulic excavator 1 and acquires a rear image, and a right camera 512 that photographs the area to the right of the hydraulic excavator 1 and acquires a right side image. However, the monitoring sensor is not limited to the above configuration. For example, the monitoring sensor may be composed of at least one of the following: a front camera that photographs the area in front of the hydraulic excavator 1 and a left camera that photographs the area to the left of the hydraulic excavator 1, in addition to or in place of at least one of the rear camera 511 and the right camera 512. In this way, the monitoring device 51 monitors the area around the hydraulic excavator 1.

[0032] The rear image captured by the rear camera 511 and the right-side image captured by the right camera 512 are, for example, videos, but they may also be still images obtained by shooting at a predetermined frame rate.

[0033] The rear camera 511 and the right camera 512 are mounted on the upper right rear side of the driver's unit 46 (see Figure 4). Specifically, the rear camera 511 is positioned behind the right camera 512.

[0034] Furthermore, the number, installation location, and installation method of the monitoring sensors are not particularly limited, as long as the monitoring device 51 can monitor within the required range. Also, the monitoring sensors are not limited to the cameras described above, but may be various types of sensors. For example, the monitoring sensors may be ultrasonic radar using ultrasound, millimeter-wave radar using millimeter-wave radio waves, lidar (Light Detection and Ranging) using lasers, or stereo cameras that integrate the functions of multiple cameras.

[0035] The monitoring device 51 outputs the acquired monitoring information (in this embodiment, captured image information) to the control device 53. The control device 53 is composed of an electronic control unit, also called an ECU (Electronic Control Unit). The control device 53 may consist of a single piece of hardware, or it may consist of multiple pieces of hardware that can communicate with each other. In this embodiment, the control device 53 consists of a single piece of hardware and is located at an appropriate position within the operation unit 46.

[0036] The control device 53 performs various processes (controls) related to the obstacle detection and warning system 5. These processes include, for example, a determination process that performs known image processing on the captured image acquired by the monitoring device 51 to extract obstacles around the hydraulic excavator 1, and then determines whether or not there are obstacles around the hydraulic excavator 1 based on the extraction results. Switching between the execution (enabled state) and the stop (disabled state) of this determination process is achieved, for example, by an operator operating a switching device 54 that is electrically connected to the control device 53.

[0037] In this embodiment, the switching device 54 is configured as a pushable alternate switch. For example, when the above-mentioned determination process is stopped, pressing the switching device 54 will execute the determination process. On the other hand, when the determination process is being executed, pressing the switching device 54 will stop the determination process. Note that the switching device 54 is not limited to the above configuration, and may be configured as a momentary switch or a lever, for example. The switching device 54 is positioned at an appropriate location within the operating unit 46.

[0038] The indicator light 521 included in the alarm device 52 is, for example, a rotating light. The indicator light 521 rotates while its illuminated part lights up when the control device 53 determines that there is an obstacle around the hydraulic excavator 1.

[0039] The alarm device 52 includes an indicator light 521 as well as an alarm unit 522. The alarm unit 522 consists of a buzzer that emits a sound when the control device 53 determines that an obstacle is present around the hydraulic excavator 1. Alternatively, the alarm unit 522 may consist of an audio output unit that emits a sound (electronic sound) when the control device 53 determines that an obstacle is present around the hydraulic excavator 1.

[0040] The alarm unit 522 is positioned on the upper rotating body 4, similar to the indicator light 521. For example, the alarm unit 522 is positioned so that at least one of the cooperating workers working with the hydraulic excavator 1 (operator) and the operator seated in the driver's seat 461 (see Figure 6, etc.), described later, can easily hear the sound emitted from the alarm unit 522. In order to achieve this arrangement, multiple alarm units 522 may be provided.

[0041] The aforementioned co-workers are often positioned around the hydraulic excavator 1 in order to work together with it. It is preferable that the indicator light 521 be positioned in a location that is easily visible to the co-workers positioned around the hydraulic excavator 1. Therefore, in this embodiment, the indicator light 521 is mounted on the upper right rear side of the driver's unit 46, but the mounting position (placement position) of the indicator light 521 may be a different position from the upper right rear side of the driver's unit 46. For example, if it is easily visible to the co-workers, the mounting position of the indicator light 521 may be on the upper part of the machine room 45 (see Figure 1, etc.).

[0042] Display device D1 is, for example, a liquid crystal display device or an organic EL display device. Display device D1 displays a rear image of the hydraulic excavator 1 acquired by the rear camera 511, a right-side image of the hydraulic excavator 1 acquired by the right camera 512, and so on. Display device D1 is located in the operator's unit 46. The arrangement configuration of display device D1 will be described below.

[0043] [3. Display device arrangement configuration] In describing the arrangement configuration of the display device D1, the configuration of the operating unit 46 in which the display device D1 is located (housed) will be explained.

[0044] [3-1. Configuration of the driver's unit] Figure 6 is a perspective view from the front left showing the configuration of the driver's compartment 46. Figure 7 is a magnified view from the front left showing the area around the driver's seat 461, which will be described later. Note that, for convenience, parts of the cabin 466, which will be described later, are omitted from the illustration in Figures 6 and 7.

[0045] The driver's compartment 46 is provided with a driver's seat 461 for the operator to sit in when operating the hydraulic excavator 1. In particular, the driver's seat 461 is positioned approximately in the center of the driver's compartment 46 (see also Figure 9, described later). Specifically, the driver's seat 461 is positioned slightly rearward from the center of the driver's compartment 46. Thus, the driver's compartment 46 has a driver's seat 461 positioned near the center of the driver's compartment 46.

[0046] The driver's seat 461 comprises a seat surface 461a and a backrest 461b. The seat surface 461a supports the buttocks and thighs of the operator seated in the driver's seat 461. The seat surface 461a comprises a plurality of metal members joined together by welding or the like, and comprises a seat frame extending horizontally and a cushion member provided along this seat frame. This cushion member may consist of a single cushioning material or a combination of multiple types of cushioning materials. The seat frame is connected to a seat mount 462 located below the driver's seat 461. This fixes the driver's seat 461 on the seat mount 462.

[0047] The backrest portion 461b supports the back of the operator seated in the driver's seat 461. The backrest portion 461b is composed of a plurality of metal members joined together by welding or the like, and includes a backrest frame extending in one direction from the rear end of the seat surface portion 461a, and other cushioning members provided along this backrest frame. These other cushioning members may consist of a single cushioning material, or they may be composed of a combination of multiple types of cushioning materials, similar to the cushioning members described above.

[0048] The backrest frame described above is connected at one end to the rear end of the seat frame described above. More specifically, the backrest frame is connected to the seat frame so as to be able to swing in the front-to-back direction. This makes it possible to orient the backrest portion 461b perpendicular to the horizontally extending seat portion 461a, tilt it forward, or tilt it backward. Note that tilting forward means that, in the backrest portion 461b, the end opposite to the end connected to the seat portion 461a is positioned in front of the end connected to the seat portion 461a. Similarly, tilting backward means that, in the backrest portion 461b, the end opposite to the end connected to the seat portion 461a is positioned behind the end connected to the seat portion 461a.

[0049] Thus, the driver's unit 46 has a driver's seat 461, which includes a seat surface 461a that extends horizontally and a backrest 461b that can swing relative to the seat surface 461a in the front-rear direction of the driver's unit 46.

[0050] Normally, when an operator sits in the driver's seat 461, they tilt the backrest 461b backward as appropriate (for example, according to their physique, preferred seating position, etc.). In this embodiment, the state (posture) of the backrest 461b when the operator is seated in the driver's seat 461 (especially to operate the hydraulic excavator 1) is referred to as the seated state. That is, the backrest 461b is tilted backward in the seated state. Figures 6, 7, and Figure 9 (described later) illustrate the backrest 461b in the seated state. On the other hand, a state in which the backrest 461b is tilted forward is suitable for accessing the rear of the driver's seat 461, etc.

[0051] Around the driver's seat 461 are other display devices D2 that display various information related to the hydraulic excavator 1, and various operating tools 463 that enable the operation of various parts of the hydraulic excavator 1 by driving the hydraulic actuators.

[0052] The other display device D2 is, for example, a liquid crystal display device or an organic EL display device, and is provided separately from the display device D1. Examples of information that can be displayed on the other display device D2 include the rotational speed of the engine 451, the remaining amount of fuel used in the engine 451, and the cumulative operating time of the hydraulic excavator 1. The other display device D2 is located to the right front of the driver's seat 461. However, the location of the other display device D2 is not limited to the right front of the driver's seat 461; for example, it may be located to the left front of the driver's seat 461. Thus, the hydraulic excavator 1 is equipped with a display device D2 different from the display device D1, and this other display device D2 is located in the operating section 46.

[0053] Even if the hydraulic excavator 1 is configured to have a display device D1 and another display device D2 different from display device D1, it is desirable to position the other display device D2 in a location easily visible to the operator seated in the driver's seat 461. Furthermore, it is desirable to protect the other display device D2 from flying soil and other debris from outside the hydraulic excavator 1. From this viewpoint, it is desirable to position the other display device D2 in the driver's unit 46, as in this embodiment.

[0054] Various operating devices 463 are located in front of the driver's seat 461 and to the left and right of the driver's seat 461. The operating devices 463 located in front of the driver's seat 461 include a pair of travel levers 463a. The pair of travel levers 463a are arranged side by side in the left-right direction. The pair of travel levers 463a enable the hydraulic excavator 1 to move by driving the left and right travel motors 22. In detail, each travel lever 463a can be tilted in the forward and backward directions. For example, when the operator tilts each travel lever 463a forward, the hydraulic excavator 1 can be moved forward, and when the operator tilts each travel lever 463a backward, the hydraulic excavator 1 can be moved backward.

[0055] The control device 463 located to the right of the driver's seat 461 includes one of a pair of operating levers 463b and the other operating lever 463c, and the control device 463 located to the left of the driver's seat 461 includes the other of the pair of operating levers 463b. Hereinafter, one of the pair of operating levers 463b may be referred to as the first operating lever 463b1, and the other of the pair of operating levers 463b may be referred to as the second operating lever 463b2.

[0056] The first operating lever 463b1 is located to the right of the driver's seat 461, and the second operating lever 463b2 is located to the left of the driver's seat 461. The other operating lever 463c is located to the right and rear of the first operating lever 463b1. An armrest 464 is provided behind both the first operating lever 463b1 and the second operating lever 463b2. The armrest 464 is provided for the operator to rest their arm on when operating at least one of the first operating lever 463b1 or the second operating lever 463b2.

[0057] A pair of operating levers 463b drive one or more of the slewing motor 43, boom cylinder 311, arm cylinder 321, and bucket cylinder 331, thereby enabling the operation of the work implement 3 or the rotation of the upper slewing body 4. In detail, each operating lever 463b can be tilted at least in the forward / backward direction and left / right direction. In addition, each operating lever 463b can be tilted to one side in the forward / backward direction while simultaneously tilting to one side in the left / right direction. For example, when the operator tilts the first operating lever 463b1 forward, the boom cylinder 311 is retracted, allowing the boom 31 to move downward. When the operator tilts the first operating lever 463b1 backward, the boom cylinder 311 is extended, allowing the boom 31 to move upward. In other words, the first operating lever 463b1 enables the operation of the work implement 3.

[0058] Another operating lever 463c enables the blade cylinder 231 to be driven, thereby driving the blade 23. In detail, the other operating lever 463c can be tilted in the forward and backward directions. For example, when the operator tilts the other operating lever 463c forward, the blade cylinder 231 is extended, allowing the blade 23 to be moved downward. Also, when the operator tilts the other operating lever 463c backward, the blade cylinder 231 is retracted, allowing the blade 23 to be moved upward.

[0059] Thus, the driver's unit 46 has an operating device 463 positioned on one side (to the right in this embodiment) in the width direction of the driver's unit 46 relative to the driver's seat 461, and this operating device 463 includes an operating lever 463b (first operating lever 463b1 in this embodiment) for operating the work implement 3.

[0060] A console section 465 is provided between the first operating lever 463b1 and the other operating levers 463c in the left-right direction. That is, the operating section 46 has a console section 465. The console section 465 is provided with a group of switches 465a that enable the setting of various parts of the hydraulic excavator 1. The group of switches 465a includes various types of switches. Examples of various types of switches include a work mode switch, a travel mode switch, an operation switch, a headlight switch, a setting switch, and a display image switch.

[0061] The work mode selector switch allows switching between the work modes of the hydraulic excavator 1. Examples of work modes for the hydraulic excavator 1 include a mode to improve work efficiency and a mode to reduce fuel consumption (eco mode). The travel mode selector switch allows switching between a low-speed mode for low-speed travel of the hydraulic excavator 1 (e.g., travel at 2 km / h or less) and a high-speed mode for high-speed travel of the hydraulic excavator 1 (e.g., travel at 4 km / h or less). The operation switch allows operation of the quick hitch 34 (see Figure 1, etc.). Specifically, when the operation switch is operated, the quick hitch 34 is driven, allowing attachments to be attached or detached.

[0062] The headlight switch is mounted on the upper front side of the driver's unit 46 and allows switching the headlight 61 (see Figure 1, etc.) that illuminates the front of the hydraulic excavator 1 on and off. The setting switch allows selection of settings for the hydraulic excavator 1 displayed on the other display device D2. The display image switching switch allows switching the image displayed on the display device D1 to either a rear view of the hydraulic excavator 1, a right view of the hydraulic excavator 1, or both. Note that displaying both the rear view and the right view of the hydraulic excavator 1 may be achieved by displaying a composite image generated based on the rear view and right view of the hydraulic excavator 1.

[0063] The driver's seat 461, and other display devices D2, various controls 463, armrests 464, console 465, etc., arranged around the driver's seat 461 are covered by the cabin 466. The cabin 466 is roughly box-shaped and has an open bottom. More details are as follows: Figure 8 is a perspective view from the front right showing the configuration of the cabin 466. The cabin 466 has a top wall 466U, a front wall 466F, and a right side wall 466R.

[0064] The roof wall 466U extends horizontally and is positioned above the cabin 466. The roof wall 466U forms the roof of the cabin 466 and specifically covers the driver's seat 461 from above. A skylight 466U1 is provided at the front of the roof wall 466U.

[0065] The front wall 466F extends vertically and horizontally and is positioned on the front side of the cabin 466. More specifically, the front wall 466F includes a left front pillar 4661, a right front pillar 4662, and a front window WF. The left front pillar 4661 and the right front pillar 4662 are each composed of vertically extending metal columnar members. The left front pillar 4661 is positioned on the left front side of the cabin 466, and the right front pillar 4662 is positioned on the right front side of the cabin 466. A front window WF is provided between the left front pillar 4661 and the right front pillar 4662.

[0066] The front window WF is a window positioned directly in front of (forward of) the driver's seat 461 (see Figure 6, etc.), and through the front window WF, the operator seated in the driver's seat 461 can see the area in front of the operating section 46 (i.e., the area in front of the hydraulic excavator 1). The front window WF is formed in a polygonal shape when viewed from the front, but is not limited to this, and may be formed in a circular or elliptical shape, for example. In this way, the operating section 46 has a front window WF that ensures the forward field of view of the operator seated in the driver's seat 461.

[0067] The front window WF includes a fixed window WF1 located at its lower part and a movable window WF2 located at its upper part. The fixed window WF1 is provided to ensure a downward view of the forward field of vision of the operator seated in the driver's seat 461. The fixed window WF1 extends in the left-right direction. The left end of the fixed window WF1 is fixed to the lower part of the left front pillar 4661, and the right end is fixed to the lower part of the right front pillar 4662. In other words, the fixed window WF1 is configured to be immovable relative to the left front pillar 4661 and the right front pillar 4662.

[0068] The movable window WF2 is provided to secure a range of forward visibility for the operator seated in the driver's seat 461, extending from the center upwards in the vertical direction. The movable window WF2 is a movable window that extends in the vertical and horizontal directions. In detail, the movable window WF2 is attached near the connection between the top wall 466U and the front wall 466F via a link mechanism WF3 (see Figure 9) that allows the movable window WF2 to slide in the vertical direction. Sliding the movable window WF2 upwards opens the movable window WF2, and sliding the movable window WF2 downwards closes the movable window WF2. Figure 8 shows the movable window WF2 in the closed state. Thus, the movable window WF2 is configured to open and close in the vertical direction. The range that the movable window WF2 passes through when sliding upwards or downwards will be described later.

[0069] The right side wall 466R extends vertically and longitudinally and is located on the right side of the cabin 466. More specifically, the right side wall 466R includes a right front pillar 4662, a right rear pillar 4663, a bulkhead 4664, and a side window WS. The right rear pillar 4663 is a vertically extending metal columnar member and is located on the right rear side of the cabin 466. In particular, the right rear pillar 4663 is located behind the right front pillar 4662. A bulkhead 4664 is located between the right front pillar 4662 and the right rear pillar 4663 in the longitudinal direction. The bulkhead 4664 is a vertically extending metal plate-like member. The front end of the bulkhead 4664 is connected to the lower part of the right front pillar 4662.

[0070] The side window WS is a window that ensures the operator's view to the right of the driver's seat 461. More specifically, the side window WS is located to the right of the driver's seat 461, which is positioned approximately in the center of the driver's compartment 46. The operator seated in the driver's seat 461 can see to the right of the driver's compartment 46 through the side window WS. Thus, the driver's compartment 46 has a side window WS located on one side (to the right in this embodiment) in the width direction of the driver's compartment 46 relative to the driver's seat 461.

[0071] The side window WS includes a window frame WS1 and a transparent plate WS2. The window frame WS1 is a frame that includes a portion of the right front pillar 4662 extending from the vertical center to the upper end, the right rear pillar 4663, the upper end of the bulkhead 4664, an upper window frame member WS11, and a lower window frame member WS12. The portion of the right front pillar 4662 extending from the vertical center to the upper end constitutes the front part of the window frame WS1, and the right rear pillar 4663 constitutes the rear part of the window frame WS1.

[0072] The upper window frame member WS11 and the lower window frame member WS12 are each composed of metal beam-like members extending in the front-rear direction. The front end of the upper window frame member WS11 is connected to the upper end of the right front pillar 4662, and the rear end is connected to the upper end of the right rear pillar 4663. The front end of the lower window frame member WS12 is connected to the bulkhead 4664, and the rear end is connected to the lower end of the right rear pillar 4663. Therefore, the upper window frame member WS11 constitutes the upper part of the window frame WS1, and the lower window frame member WS12, together with the upper end of the bulkhead 4664, constitutes the lower part of the window frame WS1.

[0073] The transparent plate WS2 is composed of a non-magnetic transparent member formed in a flat plate shape. In this embodiment, the transparent plate WS2 is a non-magnetic glass plate. Note that the transparent member constituting the transparent plate WS2 is not limited to glass, but may be made of resin, for example. The transparent plate WS2 is formed so that its periphery follows the inner periphery of the window frame WS1 and is fixed to the window frame WS1 using an adhesive or the like.

[0074] Furthermore, a console section 465 is located between the side window WS and the driver's seat 461 in the left-right direction (see Figure 7). In other words, the console section 465 is positioned in the width direction between the driver's seat 461 and the side window WS of the driver's unit 46. In addition to the console section 465, the first operating lever 463b1 and the armrest 464 positioned behind the first operating lever 463b1 are also positioned between the side window WS and the driver's seat 461 in the left-right direction.

[0075] The cabin 466 also includes a rear wall 466B (see Figure 3) located on the rear side of the cabin 466, and a left side wall 466L (see Figure 1) located on the left side of the cabin 466. The left side wall 466L is provided with an entrance / exit 466L1 for the operator to get on and off the driver's unit 46, and a door 466L2 that can be opened and closed in relation to the entrance / exit 466L1 (see Figure 1). Therefore, in this embodiment, the operator gets on and off the driver's unit 46 from the left side of the driver's unit 46.

[0076] In this embodiment, the inner portion partitioned by the top wall 466U, the front wall 466F, the right side wall 466R, the rear wall 466B, and the left side wall 466L is called the interior 46i of the driver's unit 46 (see Figure 6, etc.). On the other hand, the portion of the driver's unit 46 opposite to the interior 46i with respect to the top wall 466U, the front wall 466F, the right side wall 466R, the rear wall 466B, and the left side wall 466L is called the exterior 46o of the driver's unit 46. Therefore, for example, the transparent plate WS2 that constitutes the right side wall 466R is a non-magnetic plate that separates the interior 46i from the exterior 46o of the driver's unit 46.

[0077] [3-2. Placement of the display device] The placement of the display device D1 will be explained based on Figure 9. Figure 9 is a left side view showing the placement of the display device D1. Note that in Figure 9, a portion of the cabin 466 has been omitted from the illustration in order to clearly show the placement of the display device D1.

[0078] The display device D1 is positioned to the right of the interior 46i of the driver's unit 46. More specifically, the display device D1 is positioned above the console 465, which is located between the driver's seat 461 and the side window WS in the left-right direction (see also Figure 6). Specifically, the display device D1 is positioned at a predetermined distance S1 above the console 465. The predetermined distance S1 may be any appropriate distance. At this position, the display device D1 is positioned such that its rear surface (the side opposite to the surface on which the rear image of the hydraulic excavator 1 is displayed) faces the left side surface of the transparent plate WS2 of the side window WS. In other words, the display device D1 is positioned at a predetermined distance S1 above the console 465, facing the side window WS.

[0079] With the above configuration, the display device D1 can be positioned to the side (to the right in this embodiment) of the operator's forward field of view while seated in the driver's seat 461. This prevents the display device D1 from obstructing the operator's forward field of view. Furthermore, by appropriately setting the predetermined interval S1, the display device D1 can be positioned outside the range of motion of the operator's arm (including hand) while seated in the driver's seat 461 and operating the console unit 465. This prevents the display device D1 from interfering with the operator's operation of the console unit 465. In summary, the display device D1 can avoid obstructing the operator's forward field of view and the operator's operation of the console unit 465.

[0080] In particular, the display device D1 is positioned above the console section 465 at a predetermined distance S1, and in a side view, it is located inside the window frame WS1 that constitutes the side window WS. That is, in a side view, the display device D1 is positioned inside the window frame WS1.

[0081] In detail, the display device D1 is positioned at a predetermined distance S2 from the window frame WS1. For example, the predetermined distance S2 includes a first predetermined distance S21, a second predetermined distance S22, a third predetermined distance S23, and a fourth predetermined distance S24. The first predetermined distance S21 is the (horizontal) distance between the display device D1 and the front of the window frame WS1 (specifically, the right front pillar 4662). The second predetermined distance S22 is the (vertical) distance between the display device D1 and the top of the window frame WS1 (specifically, the upper window frame member WS11). The third predetermined distance S23 is the (horizontal) distance between the display device D1 and the rear of the window frame WS1 (specifically, the right rear pillar 4663). The fourth predetermined distance S24 is the (vertical) distance between the display device D1 and the bottom of the window frame WS1 (specifically, the lower window frame member WS12 or the partition wall 4664). The first predetermined interval S21, the second predetermined interval S22, the third predetermined interval S23, and the fourth predetermined interval S24 may be different from each other or may be the same from each other. In this way, the display device D1 is positioned with the other predetermined intervals S2 remaining from the window frame WS1 when viewed from the side.

[0082] Typically, the window frame WS1 is positioned in a location that does not obstruct the operator's view, in order to ensure the widest possible field of vision for the operator seated in the driver's seat 461. In other words, the window frame WS1 is often positioned in a location that is difficult for the operator seated in the driver's seat 461 to see. Therefore, for example, if the display device D1, which was previously placed on top of the window frame WS1 in a side view, is moved to the inside of the window frame WS1, the display device D1 becomes easier to see. Thus, from the viewpoint of positioning the display device D1 for easy viewing, in a configuration where the side window WS includes the window frame WS1, as in this embodiment, it is desirable that the display device D1 be positioned inside the window frame WS1 in a side view.

[0083] From the viewpoint of reliably realizing a configuration in which the display device D1 is positioned inside the window frame WS1 in a side view, it is desirable that the display device D1 be positioned at a predetermined distance S2 from the window frame WS1 in a side view, as in this embodiment.

[0084] The display device D1 is positioned above the position of the driver's seat 461. More specifically, in a side view, the front of the display device D1 is positioned above the seat surface 461a (see Figure 6, etc.) of the driver's seat 461 and in front of the backrest 461b of the driver's seat 461. The rear of the display device D1 is positioned above the backrest 461b in the seated position in a side view. However, the position of the display device D1 relative to the driver's seat 461 is not limited to the above positions. For example, the entire display device D1 may be positioned in front of the backrest 461b in the seated position. In this case, at least a part of the display device D1 may be positioned in front of the seat surface 461a. Thus, at least a part of the display device D1 (the front in this embodiment) is positioned in front of the backrest 461b in the seated position. Furthermore, the display device D1 is positioned above the backrest 461b. In particular, regardless of whether the backrest 461b is in a seated position or a non-seated position, that is, even if the posture of the backrest 461b is changed as appropriate, the display device D1 is positioned above the backrest 461b.

[0085] To improve the comfort of the operator seated in the driver's seat 461, it is desirable that the driver's seat 461 support the operator in accordance with the operator's physique and preferred seating position. From this viewpoint, it is desirable that the driver's seat 461, as in this embodiment, includes a seat surface 461a that extends horizontally and a backrest 461b that can swing relative to the seat surface 461a in the front-rear direction of the driver's unit 46. Furthermore, if the entire display device D1 is positioned behind the backrest 461b in the seated position, the operator will need to turn towards the direction in which the display device D1 is positioned (for example, diagonally rear) each time they want to view the display device D1, making it cumbersome to view the display device D1. Therefore, from the viewpoint of minimizing the cumbersomeness of viewing the display device D1, it is desirable that at least a part of the display device D1 is positioned in front of the backrest 461b in the seated position, as in this embodiment.

[0086] The backrest portion 461b only needs to support the back of the operator seated in the driver's seat 461. For example, in order to reduce the manufacturing cost of the backrest portion 461b, the length of the backrest portion 461b in the direction along the operator's back may be kept to the minimum necessary. In particular, in a configuration in which such a backrest portion 461b is provided on the driver's seat 461, if the display device D1 is positioned at the same position (height) as the backrest portion 461b in the vertical direction, the operator needs to move their gaze downward to view the display device D1. On the other hand, even with the above configuration, if the display device D1 is positioned above the backrest portion 461b, the operator does not need to move their gaze downward to view the display device D1, thereby suppressing the above-mentioned downward gaze movement and making it easier to view the display device D1. In other words, from the viewpoint of suppressing downward eye movement and making the display device D1 easier to see, it is desirable that the display device D1 be positioned above the backrest 461b, as in this embodiment.

[0087] The display device D1 is positioned above the position of the control device 463, which is located to the right of the driver's seat 461. More specifically, the first operating lever 463b1 and the other operating levers 463c, which are included in the control device 463 located to the right of the driver's seat 461, are positioned in a location easily accessible to an operator seated in the driver's seat 461. A position easily accessible to an operator seated in the driver's seat 461 is, for example, approximately the same height as the vertical center of the backrest 461b in the seated position. That is, the first operating lever 463b1 and the other operating levers 463c are positioned approximately the same height as the vertical center of the backrest 461b in the seated position. Therefore, the display device D1 is positioned above the backrest 461b, as well as above the first operating lever 463b1 and the other operating levers 463c (see also Figure 6). Thus, the display device D1 is positioned above the operating device 463, which is located on one side (the right side in this embodiment) of the width direction of the driver's seat 461 relative to the driver's seat 461.

[0088] In a configuration where the driver's unit 46 has an operating device 463 positioned on one side of the width direction of the driver's unit 46 relative to the driver's seat 461, the following configuration is desirable from the viewpoint of avoiding the display device D1 getting in the way when an operator seated in the driver's seat 461 operates the operating device 463. That is, as in this embodiment, it is desirable that the display device D1 be positioned above the operating device 463.

[0089] In a configuration where the hydraulic excavator 1 is equipped with a work implement 3 (see Figure 1, etc.) positioned on one side of the width direction of the driver's unit 46 relative to the driver's unit 46, the following configuration is desirable from the viewpoint of making the operation of the work implement 3 by an operator seated in the driver's seat 461 intuitively understandable. That is, as shown in Figures 6 and 7, it is desirable that the operating device 463 positioned on one side of the width direction of the driver's unit 46 relative to the driver's seat 461 includes an operating lever 463b for operating the work implement 3.

[0090] The display device D1 is positioned outside the range of motion WF2 of the movable window WF2 of the front window WF, specifically outside the range of motion WF21 of the movable window WF2, which is the range through which the movable window WF2 passes when it slides upward or downward. More specifically, when the movable window WF2 is closed, it is positioned almost vertically (see also Figure 8). When the locking mechanism (not shown) provided on the movable window WF2 is released and the movable window WF2 is slid upward, the movable window WF2 gradually tilts backward. More specifically, as the movable window WF2 moves upward, one end that was positioned on the upper side of the movable window WF2 when closed moves backward relative to the other end that was positioned on the lower side of the movable window WF2 when closed. In other words, the movable window WF2 tilts backward as it moves upward. If the movable window WF2 is continued to slide upward, it will be positioned almost horizontally, that is, along the top wall 466U. In this state, activating the locking mechanism described above will hold the movable window WF2 against the ceiling wall 466U. In this state, the movable window WF2 is positioned above the driver's seat 461.

[0091] Therefore, the movable range WF21 of the movable window WF2 is a roughly triangular prism-shaped space extending in the left-right direction, and then the lower surface (i.e., the surface facing the driver's seat 461) curves upward and forward. The display device D1 is positioned offset downward and rearward relative to the movable range WF21 of the movable window WF2. In other words, the position of the display device D1 is offset downward and rearward relative to the movable range WF21 of the movable window WF2. Thus, the display device D1 is positioned outside the movable range WF21 of the movable window WF2.

[0092] The driver's unit 46 has a front window WF that ensures the forward view of the operator seated in the driver's seat 461, and this front window WF includes a movable window WF2 that can be opened and closed vertically. From the viewpoint of avoiding the display device D1 interfering with the opening and closing of the movable window WF2, the following configuration is desirable. That is, as in this embodiment, it is desirable that the display device D1 be positioned outside the movable range WF21 of the movable window WF2.

[0093] From the viewpoint of reducing the vertical size of the operating unit 46 by narrowing the range of motion WF21 of the movable window WF2 which can be opened and closed vertically, it is desirable that the movable window WF2 tilts backward as it moves upward, as in this embodiment.

[0094] Display device D1 is positioned above and behind the other display device D2. In other words, the other display device D2 is positioned in front of display device D1.

[0095] From the perspective of positioning the other display device D2 in a location that is easier for the operator, seated in the driver's seat 461 and facing forward, to see than the display device D1, it is desirable that the other display device D2 be positioned in front of the display device D1, as in this embodiment.

[0096] The display device D1, positioned in this configuration, is held in the side window WS via the holding unit DH. The holding configuration of the display device D1 will be described below.

[0097] [3-3. Holding configuration of the display device] Figure 10 is a perspective view from the right rear showing the holding configuration of the display device D1. In Figure 10, the transparent plate WS2 of the side window WS is omitted from the illustration in order to clarify the configuration of the holding part DH. The holding part DH has a holding member DH1.

[0098] The retaining member DH1 is provided for holding the display device D1. More specifically, the retaining member DH1 includes a first retaining member DH11 and a second retaining member DH12. The first retaining member DH11 and the second retaining member DH12 are arranged side by side in the left-right direction inside the operating unit 46i. In particular, the first retaining member DH11 is positioned to the left of the second retaining member DH12. Thus, the retaining member DH1 is arranged inside the operating unit 46i.

[0099] The first retaining member DH11 and the second retaining member DH12 are connected to each other. The connection between the first retaining member DH11 and the second retaining member DH12 is made using fastening members such as bolts, but is not limited to this, and may be achieved by joining by welding, for example.

[0100] The first holding member DH11 is constructed by bending the front and rear ends of a metal plate-shaped member extending in the front-rear direction to the left. The display device D1 is positioned between the front and rear ends that are bent to the left, and the front portion of the display device D1 is connected to the front end, and the rear portion of the display device D1 is connected to the rear end. In this way, the display device D1 is held. Note that the first holding member DH11 is not limited to the above configuration and may have any appropriate configuration.

[0101] The second retaining member DH12 is composed of a metal plate-shaped member that extends in the vertical and horizontal directions. The second retaining member DH12 has a first projection DH121, a second projection DH122, a third projection DH123, and a fourth projection DH124. The first projection DH121 protrudes upward from the center of the second retaining member DH12, the second projection DH122 protrudes downward from the center of the second retaining member DH12, the third projection DH123 protrudes forward from the center of the second retaining member DH12, and the fourth projection DH124 protrudes backward from the center of the second retaining member DH12. Note that the second retaining member DH12 is not limited to the above configuration and may have an appropriate configuration. Also, the mounting angle of the second retaining member DH12 may be adjusted as appropriate. In other words, the second retaining member DH12 may be mounted by rotating it clockwise or counterclockwise by an appropriate angle (for example, 45 degrees) from the state shown in Figure 10 when viewed from the side.

[0102] A first magnet M1 is attached to the tip of each of the first protrusions DH121, DH122, DH123, and DH124. In other words, the second holding member DH12 of this embodiment is provided with four first magnets M1. Each first magnet M1 is composed of a disc-shaped permanent magnet, but is not limited to this; for example, it may be composed of a shape other than a disc, or it may be composed of an electromagnet. Thus, the holding part DH has first magnets M1 provided on the holding member DH1 (the second holding member DH12 in this embodiment).

[0103] Furthermore, the number of first magnets M1 is not limited to four; for example, there may be one or more than four. Also, the mounting position of the first magnets M1 is not limited to the above position, but may be at an appropriate position on the holding member DH1.

[0104] The holding part DH has multiple first magnets M1 as well as multiple second magnets M2. The multiple second magnets M2 are provided corresponding to the multiple first magnets M1. More specifically, the first magnets M1 and second magnets M2 that correspond to each other form a pair, and four such pairs are provided. Each second magnet M2 is composed of a disc-shaped permanent magnet, similar to the first magnets M1, but is not limited to this; for example, it may be composed of a shape other than a disc, or it may be composed of an electromagnet. The (corresponding) first magnets M1 and second magnets M2 attract each other by their respective magnetic forces. That is, the second magnets M2 attract the first magnets M1.

[0105] The retaining part DH is attached to the transparent plate WS2 of the side window WS. More details are as follows: Figure 11 is an explanatory diagram illustrating the method of attaching the retaining part DH to the transparent plate WS2. When attaching the retaining part DH to the transparent plate WS2, the retaining member DH1 is moved from the left to the right of the transparent plate WS2 with each first magnet M1 facing the transparent plate WS2. Simultaneously with this movement of the retaining member DH1, each second magnet M2 is moved from the right to the left of the transparent plate WS2, facing its corresponding first magnet M1. This allows the first magnet M1 and second magnet M2 constituting each pair to be positioned so as to sandwich the transparent plate WS2 from the left and right directions. That is, the (corresponding) first magnet M1 and second magnet M2 are positioned so as to sandwich the transparent plate WS2 from the width direction of the operating unit 46.

[0106] As described above, since the transparent plate WS2 is a non-magnetic material (a glass plate), even if the transparent plate WS2 is positioned between the first magnet M1 and the second magnet M2, the first magnet M1 and the second magnet M2 will attract each other due to their respective magnetic forces. As a result, the holding part DH is attached to the transparent plate WS2.

[0107] In the mounting method shown in Figure 11, the holding member DH1 with the display device D1 attached is moved toward the transparent plate WS2. However, the display device D1 may be attached to the holding member DH1 after the holding member DH is attached to the transparent plate WS2. Also, in the mounting method shown in Figure 11, the movement of the holding member DH1 and the movement of the second magnet M2 are performed simultaneously. However, these movements may be performed sequentially. For example, the second magnet M2 may be moved after the holding member DH1 has been moved, or the holding member DH1 may be moved after the second magnet M2 has been moved. In this case, it is necessary to temporarily hold the holding member DH1 or the second magnet M2 that was moved first. Thus, the hydraulic excavator 1 is equipped with a holding member DH that holds the display device D1 in the side window WS.

[0108] From the viewpoint of achieving a simple configuration for holding the display device D1, which is positioned opposite the side window WS at a predetermined distance S1 (see Figure 9) above the console section 465 (see Figure 7, etc.), the following configuration is desirable. That is, as in this embodiment, it is desirable that the hydraulic excavator 1 is equipped with a holding section DH that holds the display device D1 in the side window WS.

[0109] When the side window WS includes a non-magnetic transparent plate WS2 that separates the interior 46i from the exterior 46o of the driver's unit 46, the following configuration is desirable from the viewpoint of effectively utilizing the non-magnetic nature of the transparent plate WS2 to achieve a simple configuration for holding the display device D1 by the side window WS. That is, as in this embodiment, it is desirable that the holding part DH includes a holding member DH1 that holds the display device D1, a first magnet M1 provided on the holding member DH1, and a second magnet M2 that attracts the first magnet M1. Furthermore, it is desirable that the first magnet M1 and the second magnet M2 are arranged to sandwich the transparent plate WS2 from the width direction of the driver's unit 46.

[0110] Note that the retaining part DH is not limited to the above configuration. For example, the retaining part DH may be configured with a suction cup instead of the first magnet M1, or it may be made of adhesive. As described above, the second magnet M2 forms a pair with the first magnet M1, so in a configuration where the first magnet M1 is removed from the retaining part DH, the second magnet M2 may also be removed in addition to the first magnet M1.

[0111] [4. Supplement] In this embodiment, the case where the right side is "one side in the width direction of the driver unit 46" has been described, but the invention is not limited to this. For example, the left side may be "one side in the width direction of the driver unit 46". In other words, the left and right sides may be reversed.

[0112] In this embodiment, a configuration in which the driver's unit 46 has a cabin 466 has been described, but a configuration in which a canopy is provided instead of a cabin 466 is also possible.

[0113] In this embodiment, a hydraulic excavator 1 was used as an example of the work machine, but the work machine is not limited to a hydraulic excavator 1 and may be construction machinery such as a wheel loader or a mobile crane. Furthermore, the work machine may be agricultural machinery such as a combine harvester or a tractor.

[0114] [5. Addendum] The hydraulic excavator 1 described in this embodiment can also be described as the work machine shown in the following appendix.

[0115] The work machines mentioned in Appendix (1) are: A work machine equipped with an operating unit and a display device, The aforementioned operating unit is The driver's seat and A side window positioned on one side in the width direction of the driver's seat relative to the driver's seat, It has a console section positioned between the driver's seat and the side window in the width direction, The display device is positioned at a predetermined distance above the console and facing the side window.

[0116] The work machines in Appendix (2) are the work machines described in Appendix (1), The aforementioned driver's seat is A seat surface formed by extending horizontally, It includes a backrest portion that can swing in the front-to-back direction relative to the seat portion, At least a portion of the display device is positioned in front of the backrest when the person is seated.

[0117] The work machines in Appendix (3) are the work machines described in Appendix (2), The display device is positioned above the backrest.

[0118] The work machine in Appendix (4) is the work machine described in any of Appendix (1) to (3), The driver's unit has an operating device positioned on one side in the width direction relative to the driver's seat, The display device is positioned above the operating device.

[0119] The work machines in Appendix (5) are the work machines described in Appendix (4), The operating unit is equipped with a work machine positioned on one side in the width direction, The operating device includes an operating lever for operating the work machine.

[0120] The work machine in Appendix (6) is the work machine described in any of Appendix (1) to (5), Q. The side window includes the window frame. The display device is positioned inside the window frame when viewed from the side.

[0121] The work machines specified in Appendix (7) are the work machines described in Appendix (6), The display device is positioned at a predetermined distance from the window frame when viewed from the side.

[0122] The work machine in Appendix (8) is the work machine described in any of Appendix (1) to (7), The device includes a holding unit for holding the display device in the side window.

[0123] The work machines in Appendix (9) are the work machines described in Appendix (8), The side window includes a transparent non-magnetic plate that separates the inside and outside of the operating section. The aforementioned retaining part is A holding member is disposed inside the above-mentioned location to hold the display device, The first magnet provided on the holding member, It has a second magnet that is attracted to the first magnet, The first magnet and the second magnet are positioned to sandwich the transparent plate from the width direction.

[0124] The work machine in Appendix (10) is the work machine described in any of Appendix (1) to (9), The control unit has a front window that ensures the forward view of the operator seated in the driver's seat, The aforementioned front window includes a movable window that can be opened and closed in the vertical direction. The display device is positioned outside the movable range of the movable window.

[0125] The work machine in Appendix (11) is the work machine described in Appendix (10), The movable window tilts towards the rear of the operating unit as it moves upward.

[0126] The work machine in Appendix (12) is the work machine described in any of Appendix (1) to (11), The device includes another display device different from the aforementioned display device, The other display devices are located in the operation unit.

[0127] The work machine in Appendix (13) is the work machine described in Appendix (12), The other display device is positioned in front of the aforementioned display device.

[0128] Although embodiments of the present invention have been described above, the scope of the present invention is not limited thereto, and it can be expanded or modified without departing from the spirit of the invention. [Industrial applicability]

[0129] This invention can be used, for example, in work machinery such as construction machinery and agricultural machinery. [Explanation of Symbols]

[0130] 1. Hydraulic excavator (working machine) 3. Work equipment 46 Driver's Unit 46i internal 46o External 461 Driver's seat 461a Seat part 461b Backrest 463 Operating Tools 463b Operating lever 465 Console section D1 display device D2 Other display devices DH holding part DH1 retaining member M1 First Magnet M2 2nd magnet S1 Predetermined interval S2 Other predetermined intervals WF front window WF2 Movable Window WF21 Range of Motion WS side window WS1 Window frame WS2 transparent plate

Claims

1. A work machine equipped with an operating unit and a display device, The aforementioned operating unit is The driver's seat and A side window positioned on one side in the width direction of the driver's seat relative to the driver's seat, It has a console section positioned between the driver's seat and the side window in the width direction, The display device is positioned at a predetermined distance above the console and opposite the side window of the work machine.

2. The aforementioned driver's seat is A seat surface formed by extending horizontally, It includes a backrest portion that can swing in the front-to-back direction relative to the seat portion, The work machine according to claim 1, wherein at least a portion of the display device is positioned in front of the backrest when the user is seated.

3. The work machine according to claim 2, wherein the display device is positioned above the backrest.

4. The driver's unit has an operating device positioned on one side in the width direction relative to the driver's seat, The work machine according to claim 1, wherein the display device is positioned above the operating device.

5. The operating unit is equipped with a work machine positioned on one side in the width direction, The work machine according to claim 4, wherein the operating device includes an operating lever for operating the work machine.

6. Q. The side window includes the window frame. The work machine according to claim 1, wherein the display device is positioned inside the window frame in a side view.

7. The work machine according to claim 6, wherein the display device is positioned at a predetermined distance from the window frame in a side view.

8. The work machine according to claim 1, further comprising a holding part for holding the display device in the side window.

9. The side window includes a transparent non-magnetic plate that separates the inside and outside of the operating section. The aforementioned retaining part is A holding member is disposed inside the above-mentioned location to hold the display device, The first magnet provided on the holding member, The system includes a second magnet that is attracted to the first magnet, The work machine according to claim 8, wherein the first magnet and the second magnet are arranged to sandwich the transparent plate from the width direction.

10. The control unit has a front window that ensures the forward view of the operator seated in the driver's seat, The aforementioned front window includes a movable window that can be opened and closed in the vertical direction. The work machine according to claim 1, wherein the display device is positioned outside the movable range of the movable window.

11. The working machine according to claim 10, wherein the movable window tilts toward the rear of the operating section as it moves upward.

12. The device includes another display device different from the aforementioned display device, The other display device is located in the operating unit, as described in any one of claims 1 to 11.

13. The work machine according to claim 12, wherein the other display device is positioned in front of the display device.

Images