Working machine

Abstract

To provide a working machine capable of stably operating for a long period.SOLUTION: The communication cable has a first movable section, the communication cable has a first cable section extending from the input / output device to the side section of the driver's seat and a second cable section extending downward from the side section of the driver's seat, and the support bracket has a first bracket for connecting and supporting the first cable section so that the first cable section is held at a position away from the first movable section.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a communication cable routing structure for a work machine such as a tractor. [Background technology]

[0002] In order to further improve safety, conventional vehicles are known that are equipped with an unfastened sensor (a fastening state detection sensor) that detects whether a driver seated in the driver's seat is fastening a seat belt. The unfastened sensor in the vehicle is built into the buckle (insertion connection portion) of the seat belt. In general, the unfastened sensor is configured to turn on and off depending on whether the tongue of the seat belt is inserted into the buckle. A vehicle control device detects the fastening state of the seat belt in response to the on / off signal from the unfastened sensor and turns on and off warning displays, etc. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-132043 Summary of the Invention [Problem to be solved by the invention]

[0004] In conventional work machines such as tractors, the buckle is provided on one of the left and right sides of the seat. Therefore, the communication cable connecting the non-worn sensor and the control device needs to extend from the buckle to the control device inside the vehicle body, passing through the outside of the side of the seat. However, if the communication cable connecting the sensors and operation buttons to the control device extends outside the periphery of the driver's seat, as in the case of the communication cable for the non-worn sensor, the communication cable may be excessively bent and stretched in a concentrated manner when a movable part of the driver's seat, such as the seat or backrest, is moved, or the communication cable may come into contact with the surface of the driver's seat or structural parts around the driver's seat, applying a load and resulting in communication failure.

[0005] The present invention has been made in view of the above problems, and has an object to provide a work machine that can operate stably for a long period of time. [Means for solving the problem]

[0006] The present invention employs the following technical means to achieve the above object.

[0007] A work machine according to one embodiment of the present invention comprises a vehicle body capable of travelling, a driver's seat, input / output devices arranged around the driver's seat, a control device that controls the travel of the vehicle body, a communication cable that connects the input / output devices to the control device, and a support bracket that supports the communication cable on the side of the driver's seat, wherein the driver's seat has a first movable part, and the communication cable has a first cable part that extends from the input / output device to the side of the driver's seat and a second cable part that extends downward from the side of the driver's seat, and the support bracket has a first bracket that connects and supports the first cable part so that the first cable part is held at a position away from the first movable part.

[0008] The driver's seat has a seat portion, a backrest portion as the first movable portion, and a backrest support portion that pivotally connects the backrest portion to the seat portion so that it can swing back and forth, and the backrest support portion has a side end plate that supports the lower end of the backrest portion on the side of the seat portion, and the communication cable may be supported and fixed by the first fastener at a rear position of the side end plate.

[0009] The backrest support portion may be provided on the side of the seat portion and have a side end plate that supports the lower end of the backrest portion from the side, the support bracket may have a base portion that is fixed flush with the side end plate, and the first cable portion may be provided along the outer surface of the base portion.

[0010] The first cable portion may be provided in a curved state along the outer surface of the base portion.

[0011] The first cable portion may be provided along the outer periphery of the swing center of the backrest portion on the outer surface of the base portion.

[0012] The first cable portion may be fixed at a plurality of points along the outer surface of the base portion.

[0013] The driver's seat may have a second movable part, and the support bracket may have a second bracket that supports the second cable part so that the second cable part follows the movement of the second movable part.

[0014] The vehicle may include a base portion that supports the driver's seat, and a seat adjustment device that operably connects and supports the driver's seat to an upper portion of the base portion, and the second cable portion may be connected and supported to the second bracket at a lateral position of the seat adjustment device.

[0015] The driver's seat has a seat portion as the second movable portion, a backrest portion as the first movable portion, and a backrest support portion that pivotally connects the backrest portion to the seat portion so that it can swing back and forth, and the seat adjustment device may support the seat portion at an upper part of the base portion so that it can move in at least one of the forward and backward directions or the up and down directions.

[0016] The driver's seat has a seat portion as the second movable portion, a backrest portion as the first movable portion, and a backrest support portion that pivotally connects the backrest portion to the seat portion so that it can swing back and forth, and the seat adjustment device may support the seat portion at the top of the base portion so that it can swivel left and right.

[0017] The seat belt may include a seat belt that holds the driver's body in the driver's seat, the seat belt having a belt body, a tongue portion provided at an end of the belt body, and a buckle portion that detachably connects the tongue portion, the buckle portion having an unfastened sensor as the input / output device that detects that the tongue portion is connected to the buckle portion, and the communication cable may include an unfastened communication cable that connects the unfastened sensor to the control device.

[0018] The driver's seat may have an armrest, the armrest may have an operating device as the input / output device, the communication cable may include an operating communication cable that connects the operating device to the control device, and the non-attached communication cable and the operating communication cable may be integrally configured by bundling the second cable portions together.

[0019] The driver's seat may have an armrest, the armrest may have an operating device as the input / output device, and the communication cable may include an operating communication cable that connects the operating device to the control device.

[0020] The armrest may be provided on the side of the driver's seat so as to be movable in at least one of the forward / backward direction and the upward / downward direction, and the operation communication cable may extend downward from the rear of the armrest outside the driver's seat and be connected and supported by the first bracket. [Effects of the Invention]

[0021] According to the present invention, the load on the communication cable is distributed, so that a work machine that can operate stably for a long period of time can be provided. [Brief explanation of the drawings]

[0022] [Figure 1] 1 is a left side view of a working machine according to an embodiment of the present invention. FIG. [Figure 2] 1 is a top view of a working machine according to an embodiment of the present invention; [Figure 3] 1 is a perspective view of a working machine according to an embodiment of the present invention; [Figure 4] FIG. [Figure 5] FIG. [Figure 6] FIG. 2 is a block diagram of a control device. [Figure 7] FIG. [Figure 8] FIG. [Figure 9]FIG. [Figure 10] FIG. 2 is a right side view of the driver's seat with the right armrest removed. [Figure 11] FIG. 2 is a perspective view of the lower portion of the right armrest and its surroundings. DETAILED DESCRIPTION OF THE INVENTION

[0023] An embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2 , the work machine 1 of this embodiment is a tractor and includes a vehicle body 2, a traveling device 3, a driver's seat 4, a steering device 5, a motor 6, a hood 7, a cabin 8 as a protection device for the driver's seat 4, an operating device 9, and a control device 10. The work machine 1 according to the present invention is not limited to a tractor. For example, the work machine 1 according to the present invention may be an agricultural machine, a construction machine, a transport machine, a utility vehicle, or the like other than a tractor. Alternatively, the work machine 1 according to the present invention may be a narrow tractor or a pesticide sprayer, etc., having a narrow tread of the traveling device 3 suitable for traveling on relatively narrow roads such as between trees in an orchard or between furrows in a field. Furthermore, the work machine 1 according to the present invention may be provided with a canopy or ropes instead of the cabin 8 as a protection device for the driver's seat 4.

[0024] In the following description, the length direction of the vehicle body 2 (the direction indicated by arrows X1 and X2 in Figures 1 to 3) will be referred to as the front-to-rear direction, the width direction of the vehicle body 2 (the direction indicated by arrows Y1 and Y2 in Figures 2 and 3) as the left-to-right direction, and the height direction of the vehicle body 2 (the direction indicated by arrows Z1 and Z2 in Figures 1 and 3) as the up-to-down direction.

[0025] The vehicle body 2 is made up of a frame material and a casing (transmission case) of the drive transmission device. The front half of the vehicle body 2 is made up of a frame material that is long in the front-to-rear direction. The rear half of the vehicle body 2 is made up of the transmission case. The vehicle body 2 is supported by a traveling device 3 so that it can travel.

[0026] 2 and 3, a base 11 and a console 12 are provided at the upper rear part of the vehicle body 2. The driver's seat 4 is provided at the upper part of the base 11. The steering device 5 is provided in front of the driver's seat 4 at the upper rear part of the vehicle body 2.

[0027] The traveling devices 3 support the vehicle body 2 so that it can travel. In this embodiment, the traveling devices 3 are wheels that are rotatably mounted on the vehicle body 2. The traveling devices 3 include front wheels 3F mounted on the left and right at the front of the vehicle body 2, and rear wheels 3R ​​mounted on the left and right at the rear of the vehicle body 2. Either or both of the front wheels 3F and the rear wheels 3R ​​are steered by a steering device 5. Note that the traveling devices 3 are not limited to wheels. For example, the traveling devices 3 may be crawlers.

[0028] The work machine 1 of this embodiment is a two-wheel drive vehicle that travels by driving the rear wheels 3R, and a two-wheel steering vehicle that travels by steering the front wheels 3F. The work machine 1 may be a four-wheel drive vehicle that travels by driving both the front wheels 3F and the rear wheels 3R, or a four-wheel steering vehicle that travels by steering both the front wheels 3F and the rear wheels 3R. Furthermore, of the travelling devices 3 of the work machine 1, either or both of the front wheels 3F and the rear wheels 3R ​​may be crawlers.

[0029] The driver's seat 4 is provided at the upper rear of the vehicle body 2. As shown in Figs. 1 to 3, the driver's seat 4 is provided on top of a pedestal portion 11 inside the cabin 8. As shown in Figs. 1 and 5, in this embodiment, a seat adjustment device 20 is provided on top of the pedestal portion 11, and the driver's seat 4 is placed on top of the pedestal portion 11 via the seat adjustment device 20. Details of the driver's seat 4 will be described later.

[0030] The steering device 5 is provided at the upper rear of the vehicle body 2. The steering device 5 is arranged in front of the driver's seat 4. As shown in FIG. 5, the steering device 5 has a handle (steering wheel) 13. A meter panel 14 is provided in front of the handle 13. The meter panel 14 is made up of a tachometer, an electronic display panel, lighting lamps, etc., and displays operational information of the work machine 1 such as vehicle speed, PTO rotation speed, fuel amount, warnings, etc. by means of the tachometer, electronic display panel, lighting lamps, etc.

[0031] As shown in FIGS. 1 and 2, the prime mover 6 is provided in the upper front part of the vehicle body 2. The prime mover 6 is housed inside the hood 7. In this embodiment, the prime mover 6 is a diesel engine. The prime mover 6 may be a gasoline engine or a hydrogen engine driven by the combustion energy of hydrogen gas. Alternatively, the prime mover 6 may be an electric motor driven by power generated by a fuel cell or power charged in a battery from an external power source, or may be a hybrid prime mover configured by combining an engine and an electric motor.

[0032] The cabin 8 is a protective device that protects the driver's seat 4. As shown in FIGS. 1 and 3 , the cabin 8 is a box-shaped structure that surrounds the front, rear, left, right, and above the driver's seat 4, and includes pillars 15, panels 16, and a roof 17. The pillars 15 are columnar frames that are erected in front of and behind the driver's seat 4, spaced apart in the left-right direction. That is, the pillars 15 form protective frames for the front, rear, left, and right corners of the cabin 8. The panels 16 are provided between these four pillars 15. The roof 17 is supported on the upper ends of the pillars 15.

[0033] The control device 10 is an ECU (Electronic Control Unit) that controls the operations of the traveling device 3, the prime mover 6, etc. As shown in FIGS. 2 to 4, in this embodiment, the control device 10 is stored inside the right console 12. As shown in FIG. 6, the control device 10 has a traveling control unit C1 that controls the traveling of the vehicle body 2, an operation control unit C2 that controls the operation of the work implement 1 in accordance with the operation of the steering device 5 and the operating device 9, and a notification control unit C3 that notifies the driver that the seat belt 35 is not fastened based on detection information from the unfastened sensor 66. When the notification control unit C3 detects that the seat belt 35 is not fastened, it causes the meter panel 14 to display a warning and also causes the audio output unit to notify the driver by voice.

[0034] As shown in Figures 2 and 4, the console 12 is provided on the left and right sides of the driver's seat 4 above the base 11. That is, the console 12 is disposed on both the left and right sides of the driver's seat 4. A plurality of operating devices 9, such as operating buttons and operating levers, are provided on the top of the console 12. In this way, the steering device 5, operating devices 9, base 11, and console 12 are disposed around the driver's seat 4 inside the cabin 8.

[0035] The seat adjustment device 20 movably connects and supports the driver's seat 4 to the base portion 11. As shown in FIG. 7 , the seat adjustment device 20 has a slide mechanism portion 21, a lift mechanism portion 22, and a swivel mechanism portion 23.

[0036] The slide mechanism 21 is a slide rail in which an inner frame is slidably inserted into an inner groove of an outer frame, and is arranged in pair on the left and right, extending in the front-to-rear direction below the driver's seat 4. A lift mechanism 22 is provided above the base 11, and the slide mechanism 21 is provided above the lift mechanism 22. In other words, the slide mechanism 21 supports the driver's seat 4 above the lift mechanism 22 (above the base 11) so that the driver's seat 4 can slide freely in the front-to-rear direction within a predetermined movement range.

[0037] The lift mechanism 22 is an elevator device in which a base portion is supported on an elevator frame so as to be vertically movable, and is disposed between the driver's seat 4 and the base 11. That is, the lift mechanism 22 supports the driver's seat 4 above the base 11 so as to be able to lift and move the driver's seat 4 arbitrarily in the vertical direction within a predetermined range.

[0038] The swivel mechanism 23 is a swivel joint in which a rotating plate is rotatably connected to a rotating shaft, and is disposed above and below the driver's seat 4 and the lift mechanism 22. The swivel mechanism 23 also has a rotation restricting part that is configured to restrict the rotation angle range of the driver's seat 4. That is, the swivel mechanism 23 supports the driver's seat 4 at the top of the lift mechanism 22 (the top of the pedestal 11) so that the driver's seat 4 can be rotated freely in the left-right direction within a predetermined angle range.

[0039] Of the slide mechanism 21, the lift mechanism 22, and the swivel mechanism 23, the seat adjustment device 20 may have only the slide mechanism 21, only the lift mechanism 22, or only the swivel mechanism 23. Alternatively, the seat adjustment device 20 may have only two mechanisms, the slide mechanism 21 and the lift mechanism 22, only two mechanisms, the slide mechanism 21 and the swivel mechanism 23, or only two mechanisms, the lift mechanism 22 and the swivel mechanism 23.

[0040] 7 and 8, the driver's seat 4 has a seat portion 31, a backrest portion 32, a backrest support portion 33, an armrest 34, and a seat belt 35. The seat portion 31 is connected to and supported by the upper portion of the seat adjustment device 20. That is, the seat portion 31, as a second movable portion of the driver's seat 4, is connected to and supported by the upper portion of the base portion 11 so as to be able to slide back and forth (slide action), move up and down (lift action), and turn left and right (swivel action) within a predetermined range relative to the upper portion of the base portion 11.

[0041] The backrest 32 is erected at the rear of the seat 31. The backrest 32 is pivotally supported relative to a backrest support 33 of the seat 31 so as to be able to swing back and forth within a predetermined range. That is, the backrest 32, as a first movable part of the driver's seat 4, is connected and supported at the rear of the seat 31 so as to be able to swing back and forth (recline).

[0042] The backrest support part 33 is provided at the rear of the seat part 31 and pivotally connects the backrest part 32 so that it can swing back and forth. The backrest support part 33 has side end plates 36. As shown in Figures 8 and 9, the side end plates 36 are provided on the left and right sides of the seat part 31 and hold the lower end of the backrest part 32 from the left and right directions. A support bracket 37 is attached to the right side end plate 36.

[0043] 9 and 10, the support bracket 37 has a base plate 37P, a side bracket 37A, a rear bracket 37B, and a cable bracket 37C. The base plate 37P is a flat plate and is fixed flush with the outer surface of the side end plate 36 of the backrest support part 33. The buckle part 63 of the seat belt 35 is connected to and supported by the side end plate 36 from the outer surface of the base plate 37P.

[0044] 10, a plurality of hooks 38 are provided on the outer surface of the base plate portion 37P, each of which is formed in an L-shape and extends upright. The hooks 38 are arranged in a line around the swing center L1 of the backrest portion 32 on the outer surface of the base plate portion 37P. In this embodiment, four hooks 38 are arranged at predetermined intervals around the swing center L1 of the backrest portion 32 on the outer surface of the base plate portion 37P. The number of hooks 38 is set according to the fixing length of the communication cable 70, which will be described later. In other words, as long as the communication cable 70 can be properly fixed to the base plate portion 37P, three or less hooks 38 may be provided, or five or more hooks 38 may be provided.

[0045] 9, side bracket 37A is a flat, columnar frame that is long in the vertical direction and is attached perpendicularly to the outer surface of base plate portion 37P. Side bracket 37A has a screw fastening slit 39. Screw fastening slit 39 is an oval slit that is formed to extend in the vertical direction along the side surface of side bracket 37A.

[0046] The rear bracket 37B is an L-shaped plate and has a side plate 41 and a rear plate 42. The side plate 41 is fixed to the outer surface of the base plate portion 37P in a flush state. The rear plate 42 extends rightward from the rear edge of the side plate 41. The rear bracket 37B has screw holes 43. The screw holes 43 are circular screw holes and are formed at predetermined intervals in the vertical direction along the rear surface of the rear bracket 37B.

[0047] The cable bracket 37C is an L-shaped frame body and has side frames 44 and a rear frame 45. The side frames 44 are fixed to the rear edge of the base portion 37P. The rear frame 45 extends leftward from the rear end of the side frames 44. In other words, the rear frame 45 of the cable bracket 37C extends in the left-right direction behind the seat portion 31.

[0048] As shown in Fig. 7, armrests 34 are provided on the left and right sides of the driver's seat 4. Of the left and right armrests 34, the left armrest (left armrest) 34L is connected to and supported by the backrest support part 33. More specifically, the left armrest 34L is pivotally supported on the left side end plate 36 of the backrest support part 33 so as to be able to swing up and down. Therefore, when sitting in the driver's seat 4, the driver can easily sit on the seat part 31 by swinging the left armrest 34L upward.

[0049] Of the left and right armrests 34, the right armrest (right armrest) 34R is connected to and supported by a support bracket 37 provided on the side of the seat 31. As shown in FIG. 9, the right armrest 34R is connected to the support bracket 37 via an armrest adjustment device 50. The armrest adjustment device 50 movably connects and supports the right armrest 34R to the support bracket 37.

[0050] More specifically, the armrest adjustment device 50 has a slide mechanism 51 that moves the right armrest 34R in the front-to-rear direction within a predetermined range of movement, and a height adjustment unit 52 that moves the right armrest 34R in the up-and-down direction within a predetermined range of movement. Therefore, the right armrest 34R is connected and supported to the right side of the driver's seat 4 so as to be able to slide back and forth (slide adjustment) and move up and down (height adjustment).

[0051] The slide mechanism 51 is a slide rail in which an inner frame is slidably inserted into an inner groove of the outer frame, and extends in the front-to-rear direction below the right armrest 34R. The slide mechanism 51 is connected to the upper edge of the connecting frame 53 of the height adjustment unit 52. In other words, the slide mechanism 51 supports the right armrest 34R above the connecting frame 53 so that it can slide freely in the front-to-rear direction within a predetermined movement range.

[0052] The height adjustment unit 52 is a fixing mechanism for holding the right armrest 34R at a predetermined height relative to the support bracket 37. More specifically, as shown in FIG. 9 , the height adjustment unit 52 has a connecting frame 53, a support frame 54, and a fixing screw 55.

[0053] The connecting frame 53 is a flat plate that is long in the vertical direction, and is connected to the lower part of the slide mechanism part 51. The support frame 54 is an L-shaped frame body, and has a first end piece 56 and a second end piece 57. The first end piece 56 is connected to the rear edge of the connecting frame 53. The second end piece 57 extends leftward from the rear edge of the first end piece 56.

[0054] 8, the connecting frame 53 is placed face-to-face on the right side of the side bracket 37A of the support bracket 37, and is fastened from the right side with a fixing screw 55. On the other hand, the support frame 54 is placed face-to-face on the front surface of the rear bracket 37B of the support bracket 37, and is fastened from the rear side with a fixing screw 55.

[0055] The fixing screws 55 that fix the connecting frame 53 to the side bracket 37A are fixed at any height position relative to the screw fixing slits 39 of the side bracket 37A within the range of the screw fixing slits 39. On the other hand, the fixing screws 55 that fix the support frame 54 to the rear bracket 37B are fixed to one of the multiple screw fixing holes 43 of the rear bracket 37B, which is formed at any height position. In other words, the height adjustment unit 52 makes it possible to adjust the height position of the right armrest 34R by varying the screw fixing positions of the fixing screws 55 relative to the connecting frame 53 and the support frame 54.

[0056] 8, the right armrest 34R has a plurality of operating devices 9 such as operating buttons and operating levers as input / output devices provided around the driver's seat 4. An operating circuit 9C of these operating devices 9 provided in the right armrest 34R is stored inside the right armrest 34R.

[0057] The operation circuit 9C is connected to the control device 10 by a communication cable 70. In other words, the communication cable 70 connects the operation device 9 in the right armrest 34R to the control device 10. This communication cable 70 is an operation communication cable 71 that connects the operation device 9 to the control device 10. The routing structure of the operation communication cable 71 will be described later. In this embodiment, the operation device 9 serving as an input / output device is provided in the right armrest 34R, and the routing structure of the operation communication cable 71 connected to the operation device 9 will be described. However, instead of or in addition to the right armrest 34R, the operation device 9 serving as an input / output device may be provided in the left armrest 34L, and the operation device 9 may be connected to the control device 10 by the operation communication cable 71. In this case, the routing structure of the operation communication cable 71 on the left armrest 34L side is symmetrical to the routing structure of the operation communication cable 71 on the right armrest 34R side, which will be described later, thereby achieving the same effects as the work machine 1 according to this embodiment.

[0058] As shown in Fig. 7, the seat belt 35 has a belt body 61, a tongue portion 62, a buckle portion 63, and an automatic retractor 64, and is wound around the waist of the driver in the driver's seat 4, with the tongue portion 62 connected to the buckle portion 63. The belt body 61 is a flexible band, and is connected to the left side end plate 36 of the backrest support portion 33 via the automatic retractor 64. The tongue portion 62 is a metal plate, and is connected to the tip of the belt body 61.

[0059] The buckle portion 63 is connected to the right side end plate 36 of the backrest support portion 33. The buckle portion 63 has an insertion port 65 and an unfastened state sensor 66. The tongue portion 62 is configured to be freely attachable to and detachable from the insertion port 65 of the buckle portion 63. The unfastened state sensor 66 is built into the buckle portion 63 and detects that the tongue portion 62 is inserted into the insertion port 65 of the buckle portion 63 and properly connected. In other words, the unfastened state sensor 66 detects whether the seat belt 35 is unfastened.

[0060] As shown in Fig. 9, the non-wearing sensor 66 is connected to the control device 10 by a communication cable 70. In other words, the communication cable 70 connects the non-wearing sensor 66 of the seat belt 35 to the control device 10. This communication cable 70 is a non-wearing communication cable 72 that connects the non-wearing sensor 66 to the control device 10. The buckle portion 63 may be provided on the left side end plate 36 of the backrest support portion 33, while the belt main body 61 may be provided on the right side end plate 36 of the backrest support portion 33. In this case, the routing structure of the non-wearing communication cable 72 connected to the buckle portion 63 can be made symmetrical to the routing structure of the non-wearing communication cable 72 described later, thereby achieving the same effects as those of the work machine 1 according to this embodiment.

[0061] 8, both the operation communication cable 71 and the non-attached communication cable 72 are routed on the right side of the driver's seat 4. The operation communication cable 71 runs from the rear lower part of the right armrest 34R behind the right side end plate 36 of the backrest support part 33, and extends from the right rear of the driver's seat 4 to the top of the base part 11. Furthermore, the operation communication cable 71 from the top of the base part 11 onwards runs through the inside of the vehicle body 2 and is connected to the control device 10.

[0062] The operation communication cable 71 has a first cable portion 73 extending from the operation device (input / output device) 9 on the right armrest 34R to the right side of the driver's seat 4, and a second cable portion 74 extending downward from the right side of the driver's seat 4.

[0063] The non-attached communication cable 72 extends from the base end of the buckle 63, passing behind the right side end plate 36 of the backrest support 33, and from the right rear of the driver's seat 4 to the top of the base 11. The non-attached communication cable 72 from the top of the base 11 onward passes through the inside of the vehicle body 2 and is connected to the control device 10.

[0064] The non-wearing communication cable 72 has a first cable portion 73 extending from the non-wearing sensor (input / output device) 66 of the seat belt 35 to the right side of the driver's seat 4, and a second cable portion 74 extending downward from the right side of the driver's seat 4.

[0065] 9, the operation communication cable 71 and the non-attached communication cable 72 are integrally configured by bundling their second cable portions 74. That is, the operation communication cable 71 and the non-attached communication cable 72 extend separately and independently as first cable portions 73 from each input / output device 9, 66 to the midpoint, and are bundled together to form a single second cable portion 74 from the midpoint onwards.

[0066] 11 , the first cable portion 73 of the operation communication cable 71 extends downward from the lower rear portion of the right armrest 34R and is fixed to the rear frame 45 of the cable bracket 37C by a cable clip 75. That is, the operation communication cable 71 extends downward from the lower portion of the right armrest 34R outside the driver's seat 4 and is connected and supported by the cable bracket 37C. In this way, the first cable portion 73 of the operation communication cable 71 is connected and fixed to the cable bracket 37C provided behind the seat 31 so as to be held in a position away from the backrest 32. In other words, the support bracket 37 has a cable bracket (first bracket) 37C that connects and supports the first cable portion 73 of the operation communication cable 71 so as to be held in a position away from the backrest (first movable portion) 32.

[0067] The second cable portion 74 of the control communication cable 71 is bound to the second cable portion 74 of the unattached communication cable 72, and both are fixed to the lower edge of the side plate 41 of the rear bracket 37B and the lower edge of the side bracket 37A by cable clips 75. As shown in FIG. 10 , the lower end of the second cable portion 74 is fixed to a fixing bolt on the upper part of the base 11 by the cable clip 75. In this way, the second cable portion 74 of the control communication cable 71 is connected to and supported by the side bracket 37A at a position to the side of the seat adjustment device 20 so as to follow the movement (front-to-back sliding, up-down movement, and left-to-right turning) of the seat 31, and extends between the side bracket 37A and the upper part of the base 11. In other words, the support bracket 37 has a side bracket (second bracket) 37A that supports the second cable portion 74 of the control communication cable 71 so that the second cable portion 74 follows the movement of the seat 31 (second movable part) 31.

[0068] As shown in FIGS. 9 and 10 , the first cable portion 73 of the non-attached communication cable 72 extends downward from the lower end of the buckle portion 63 of the seat belt 35, curves gently rearward and upward along the outer surface of the base plate portion 37P, and is fixed to a plurality of hooks 38 provided on the outer surface of the base plate portion 37P by cable clips 75. The first cable portion 73 is curved in an S-shape along the outer periphery of the swing center L1 of the backrest portion 32 on the outer surface of the base plate portion 37P. That is, the first cable portion 73 of the non-attached communication cable 72 is curved along the outer surface of the base plate portion 37P around the swing center L1 of the backrest portion 32 and is fixed to the base plate portion 37P at multiple locations. In this embodiment, the first cable portion 73 is routed from the lower front of the base plate portion 37P, passing above the swing center L1 of the backrest portion 32, and toward the rear of the base plate portion 37P. That is, the first cable portion 73 is provided in a curved state along the outer surface of the base portion 37P so as to pass above the swing center L1 of the backrest portion 32. The first cable portion 73 may also be provided in a curved state along the outer surface of the base portion 37P so as to pass below the swing center L1 of the backrest portion 32.

[0069] 9 and 11, the first cable portion 73 of the unattached communication cable 72 extends from the outer surface of the base plate portion 37P toward the rear of the base plate portion 37P and is fixed to the rear frame 45 of the cable bracket 37C by a cable clip 75. In this way, the first cable portion 73 of the unattached communication cable 72 is connected and fixed to the cable bracket 37C provided behind the seat portion 31 so as to be held in a position away from the backrest portion 32. In other words, the support bracket 37 has a cable bracket (first bracket) 37C that connects and supports the first cable portion 73 of the unattached communication cable 72 so as to be held in a position away from the backrest portion (first movable portion) 32.

[0070] 11 , as described above, the second cable portion 74 of the unattached communication cable 72, together with the second cable portion 74 of the operation communication cable 71, is fixed to the lower edge of the side plate 41 of the rear bracket 37B and the lower edge of the side bracket 37A by the cable clip 75. In this way, the second cable portion 74 of the unattached communication cable 72 is connected to and supported by the side bracket 37A at a position to the side of the seat adjustment device 20 so as to follow the movement (front-back sliding, up-down movement, left-right turning) of the seat portion 31, and extends between the side bracket 37A and the upper part of the base portion 11. In other words, the support bracket 37 has a side bracket (second bracket) 37A that supports the second cable portion 74 of the unattached communication cable 72 so that the second cable portion 74 follows the movement of the seat portion (second movable portion) 31.

[0071] The present invention provides a work machine 1 described in the following items.

[0072] (Item 1) a driver's seat (4) having a first movable part (32), and the communication cable (70) having a first cable part (73) extending from the input / output device (9, 66) to the side of the driver's seat (4) and a second cable part (74) extending downward from the side of the driver's seat (4); and a first bracket (37C) for connecting and supporting the first cable part (73) so that the first cable part (73) is held at a position away from the first movable part (32).

[0073] According to the work machine 1 relating to the above item 1, even when the first movable part 32 of the driver's seat 4 is moved, an overload is not placed on the first cable part 73 of the communication cable 70. In other words, the load placed on the communication cable 70 when the driver's seat 4 is moved is distributed to the first cable part 73 and the second cable part 74. Therefore, malfunctions are less likely to occur in the communication cable 70, and stable operation can be maintained over a long period of time.

[0074] (Item 2) The driver's seat 4 has a seat portion 31, a backrest portion 32 as the first movable portion, and a backrest support portion 33 that pivotally connects the backrest portion 32 to the seat portion 31 so that the backrest portion 32 can swing back and forth, the backrest support portion 33 has a side end plate 36 that supports the lower end of the backrest portion 32 on the side of the seat portion 31, and the first cable portion 73 is connected and supported by the first bracket 37C at a position rearward of the backrest support portion 33.

[0075] According to the work machine 1 relating to this item 2, even if the backrest portion 32 of the driver's seat 4 as the first movable part is swung in the forward and backward directions, the communication cable 70 is not subjected to an overload, so malfunctions in the communication cable 70 are unlikely to occur, and stable operation can be maintained for a long period of time.

[0076] (Item 3) The work machine 1 described in item 2, wherein the backrest support portion 33 is provided on the side of the seat portion 31 and has a side end plate 36 that supports the lower end portion of the backrest portion 32 from the side, the support bracket 37 has a base portion 37P that is fixed to the side end plate 36 in a flush state, and the first cable portion 73 is provided along the outer surface of the base portion 37P.

[0077] According to the work machine 1 relating to this item 3, the load on the communication cable 70 is dispersed and absorbed by the base plate portion 37P fixed to the side end plate 36 of the backrest support portion 33, which can more effectively prevent malfunction of the communication cable 70. Therefore, stable operation can be maintained for a longer period of time.

[0078] (Item 4) Item 4. The work implement 1 according to item 3, wherein the first cable portion 73 is provided in a curved state along the outer surface of the base portion 37P.

[0079] According to the work machine 1 relating to this item 4, the first cable portion 73 is fixedly held in a curved state relative to the side end plate 36 of the backrest support portion 33, and therefore, even less load is applied to the first cable portion 73. Therefore, malfunctions in the communication cable 70 are less likely to occur, and stable operation can be maintained for a longer period of time.

[0080] (Item 5) 5. The work implement 1 according to item 4, wherein the first cable portion 73 is provided along the outer periphery of the swing center L1 of the backrest portion 32 on the outer surface of the base portion 37P.

[0081] According to the work machine 1 related to this item 5, the first cable portion 73 is fixed and held along the outer periphery of the swing center L1 of the backrest portion 32, and therefore, even less load is applied to the first cable portion 73. Therefore, malfunctions in the communication cable 70 are less likely to occur, and stable operation can be maintained for a longer period of time.

[0082] (Item 6) Item 4. The work implement 1 according to item 3, wherein the first cable portion 73 is fixed at a plurality of locations along the outer surface of the base portion 37P.

[0083] According to the work machine 1 related to this item 6, the first cable portion 73 is securely fixed to and held by the base portion 37P of the support bracket 37 fixed to the side end plate 36 of the backrest support portion 33, and therefore, even less load is applied to the first cable portion 73. Therefore, malfunctions in the communication cable 70 are less likely to occur, and stable operation can be maintained for a longer period of time.

[0084] (Item 7) The work machine 1 described in any one of items 1 to 6, wherein the driver's seat 4 has a second movable part 31, and the support bracket 37 has a second bracket 37A that supports the second cable part 74 so that the second cable part 74 follows the movement of the second movable part 31.

[0085] According to the work machine 1 according to this item 7, the load applied to the communication cable 70 when the second movable part 31 of the driver's seat 4 is moved is dispersed and absorbed by the second cable part 74, which can more effectively prevent malfunction of the communication cable 70. Therefore, stable operation can be maintained for a longer period of time.

[0086] (Item 8) Item 7. The work machine 1 is provided with a base portion 11 that supports the driver's seat 4, and a seat adjustment device 20 that operably connects and supports the driver's seat 4 to the upper part of the base portion 11, and the second cable portion 74 is connected and supported to the second bracket 37A at a lateral position of the seat adjustment device 20.

[0087] According to the work machine 1 according to item 8, the load applied to the communication cable 70 when the seat adjustment device 20 is moved is dispersed and absorbed by the second cable portion 74, which more effectively prevents malfunction of the communication cable 70. This makes it possible to maintain stable operation for a longer period of time.

[0088] (Item 9) The driver's seat 4 has a seat portion 31 as the second movable portion, a backrest portion 32 as the first movable portion, and a backrest support portion 33 that pivotally connects the backrest portion 32 to the seat portion 31 so that the backrest portion 32 can swing back and forth, and the seat adjustment device 20 supports the seat portion 31 at an upper portion of the base portion 11 so that the seat portion 31 can move in at least one of the front-to-back direction or the up-to-down direction.

[0089] According to the work machine 1 relating to this item 9, even if the seat portion 31 of the driver's seat 4 as the second movable portion is moved in the front-rear or up-down direction, the load acting on the communication cable 70 is dispersed and absorbed by the second cable portion 74, which can more effectively prevent malfunction of the communication cable 70. Therefore, stable operation can be maintained for a longer period of time.

[0090] (Item 10) The driver's seat 4 has a seat portion 31 as the second movable portion, a backrest portion 32 as the first movable portion, and a backrest support portion 33 that pivotally connects the backrest portion 32 to the seat portion 31 so that the backrest portion 32 can swing back and forth, and the seat adjustment device 20 supports the seat portion 31 at an upper portion of the base portion 11 so that the seat portion 31 can swivel left and right.The work machine 1 described in item 8.

[0091] According to the work machine 1 relating to this item 10, even when the seat portion 31 of the driver's seat 4 as the second movable portion is rotated left and right, the load acting on the communication cable 70 is dispersed and absorbed by the second cable portion 74, which can more effectively prevent malfunction of the communication cable 70. Therefore, stable operation can be maintained for a longer period of time.

[0092] (Item 11) 11. The work machine 1 according to any one of items 1 to 10, further comprising a seat belt 35 for holding the body of an operator in the driver's seat 4, the seat belt 35 having a belt main body 61, a tongue portion 62 provided at an end of the belt main body 61, and a buckle portion 63 for detachably connecting the tongue portion 62, the buckle portion 63 having, as the input / output device 9, 66, a non-attached sensor 66 for detecting that the tongue portion 62 is connected to the buckle portion 63, and the communication cable 70 including a non-attached communication cable 72 for connecting the non-attached sensor 66 to the control device 10.

[0093] According to the work machine 1 relating to this item 11, malfunctions caused by overload of the non-wearing communication cable 72 connected to the non-wearing sensor 66 of the seat belt 35 can be suppressed, and therefore the non-wearing detection function of the seat belt 35 can be maintained stably over a long period of time.

[0094] (Item 12) The driver's seat 4 has an armrest 34, the armrest 34 has an operating device 9 as the input / output device, the communication cable 70 includes an operation communication cable 71 that connects the operating device 9 to the control device 10, and the non-attached communication cable 72 and the operation communication cable 71 are integrally configured by bundling the second cable portions 74 together.

[0095] According to the work machine 1 relating to this item 12, it is possible to prevent the non-attached communication cable 72 and the operation communication cable 71 from colliding with each other when the driver's seat 4 is moved or when the vehicle body 2 is vibrated, thereby preventing malfunctions caused by an overload on the non-attached communication cable 72 and malfunctions caused by an overload on the operation communication cable 71. This makes it possible to stably maintain the function of detecting non-attachment of the seat belt 35 and the operation function of the operation device 9 for a long period of time.

[0096] (Item 13) The working machine 1 described in any one of items 1 to 10, wherein the driver's seat 4 has an armrest 34, the armrest 34 has an operating device 9 as the input / output device, and the communication cable 70 includes an operation communication cable 71 that connects the operating device 9 to the control device 10.

[0097] According to the work machine 1 relating to this item 13, malfunctions caused by overload of the operation communication cable 71 connected to the operation device 9 of the armrest 34 can be suppressed, and therefore the operation function of the operation device 9 can be maintained stably for a long period of time.

[0098] (Item 14) The armrest 34 is provided on the side of the driver's seat so as to be movable in at least one of the front-to-rear direction and the up-to-down direction, and the operation communication cable 71 extends downward from the rear of the armrest 34 outside the driver's seat 4 and is connected and supported by the first bracket 37C.

[0099] According to the work machine 1 of this item 14, even if the armrest 34 is moved in the front-rear or up-down direction, the load on the operation communication cable 71 is dispersed and absorbed by the operation communication cable 71 that extends downward from the rear of the armrest 34, which more effectively prevents malfunction of the operation communication cable 71. Therefore, the operation function of the operation device 9 can be stably maintained for a longer period of time.

[0100] Although the present invention has been described above, the embodiments disclosed herein should be considered to be illustrative and not restrictive in all respects. The scope of the present invention is defined by the claims, not by the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0101] 1 Work equipment 2. Body 3 Running gear 4 Driver's seat 5 Steering gear 7. Bonnet 8 Cabin (protective equipment) 9 Operation device (input / output device) 10 Control device 11 Base 20 Seat adjustment device 31 Seat (second movable part) 32 Backrest part (first movable part) 33 Backrest support part 34 Armrest 35 Seatbelt 36 Side end plate 37 Support bracket 37A Side bracket (second bracket) 37B rear bracket 37C Cable bracket (first bracket) 37P board part 61 Belt body 62 Tongue 63 Buckle part 66 Non-wearable sensors (input / output devices) 70 Communication Cable 71 Operation communication cable 72 Unattached communication cable 73 First Cable Section 74 Second cable section L1 swing center

Claims

1. A drivable vehicle body, The driver's seat and an input / output device provided around the driver's seat; a control device for controlling the running of the vehicle body; a communication cable connecting the input / output device to the control device; a support bracket that supports the communication cable at a side of the driver's seat, the driver's seat has a first movable portion, the communication cable includes a first cable portion extending from the input / output device to a side portion of the driver's seat, and a second cable portion extending downward from the side portion of the driver's seat, The support bracket includes a first bracket that connects and supports the first cable portion so that the first cable portion is held at a position spaced apart from the first movable portion.

2. The driver's seat has a seat portion, a backrest portion as the first movable portion, and a backrest support portion that pivotally connects the backrest portion to the seat portion so that the backrest portion can swing back and forth, The work machine according to claim 1, wherein the first cable portion is connected to and supported by the first bracket at a position rearward of the backrest support portion.

3. The backrest support portion is provided on a side portion of the seat portion and has a side end plate that supports a lower end portion of the backrest portion from the side, the support bracket has a base portion fixed to the side end plate in a face-to-face state; The work machine according to claim 2 , wherein the first cable portion is provided along an outer surface of the base portion.

4. The work machine according to claim 3 , wherein the first cable portion is provided in a curved state along an outer surface of the base portion.

5. The work machine according to claim 4, wherein the first cable portion is provided along an outer periphery of the pivot center of the backrest portion on the outer surface of the base portion.

6. The work machine according to claim 3 , wherein the first cable portion is fixed at a plurality of locations along the outer surface of the base portion.

7. the driver's seat has a second movable portion, The work machine according to claim 1 , wherein the support bracket includes a second bracket that supports the second cable portion so that the second cable portion follows the movement of the second movable portion.

8. a base portion supporting the driver's seat; a seat adjustment device that operably connects and supports the driver's seat to an upper portion of the base portion, The work machine according to claim 7, wherein the second cable portion is connected to and supported by the second bracket at a position to the side of the seat adjustment device.

9. The driver's seat has a seat portion as the second movable portion, a backrest portion as the first movable portion, and a backrest support portion that pivotally connects the backrest portion to the seat portion so that the backrest portion can swing back and forth, The work machine according to claim 8, wherein the seat adjustment device supports the seat portion at an upper portion of the base portion so as to be movable in at least one of a front-rear direction and a vertical direction.

10. The driver's seat has a seat portion as the second movable portion, a backrest portion as the first movable portion, and a backrest support portion that pivotally connects the backrest portion to the seat portion so that the backrest portion can swing back and forth, The work machine according to claim 8, wherein the seat adjustment device supports the seat portion at an upper portion of the base portion so as to be rotatable in the left-right direction.

11. a seat belt for holding the driver's body in the driver's seat; The seat belt includes a belt body, a tongue portion provided at an end of the belt body, and a buckle portion that detachably connects the tongue portion, the buckle portion has, as the input / output device, a non-wearing sensor that detects that the tongue portion is connected to the buckle portion; The work machine according to any one of claims 1 to 10, wherein the communication cable includes a non-attached communication cable that connects the non-attached sensor to the control device.

12. the driver's seat has an armrest; the armrest has an operation device as the input / output device, the communication cable includes an operation communication cable that connects the operation device to the control device; The work machine according to claim 11 , wherein the non-attached communication cable and the operation communication cable are integrally configured by bundling the second cable portions together.

13. the driver's seat has an armrest; the armrest has an operation device as the input / output device, The work machine according to any one of claims 1 to 10, wherein the communication cable includes an operation communication cable that connects the operation device to the control device.

14. The armrest is provided on the side of the driver's seat so as to be movable in at least one of a front-rear direction and a top-bottom direction, The work machine according to claim 13, wherein the operation communication cable extends downward from the rear of the armrest outside the driver's seat and is connected and supported by the first bracket.

Images