Work machine

Abstract

The present invention makes it possible for a steering member to be stably rocked.　A work machine (1) comprises an operator seat (18), a steering member (27) that is provided at the periphery of the operator seat, and an arm rest (28) that is provided behind the steering member at a prescribed interval therefrom. The steering member can be gripped by an operator (57) that is sitting in the operator seat and rocked in the forward / backward direction (K1). The arm rest has a resting surface (28b) on which the forearm (58) of the operator is to be rested. The resting surface is a curved surface that protrudes upward as seen from the side of the armrest and is continuous from front to back over the apex (61) thereof.

Description

Work equipment

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

[0002] BACKGROUND ART A working machine disclosed in Patent Document 1 is known in the prior art.

[0003] The work machine disclosed in Patent Document 1 includes a control member (operating lever) disposed to the side of the driver's seat where the operator sits, and an armrest disposed behind the control member.

[0004] The operator places his / her forearm on the upper surface of the armrest, grips the control member, and swings the control member back and forth. The upper surface of the armrest is formed as a flat surface.

[0005] Japanese Patent Publication No. 2004-308132

[0006] Incidentally, when gripping the control member with the forearm resting on the armrest and swinging the control member back and forth, stable operation can be achieved by operating the control member while pressing the forearm against the armrest.

[0007] Since the top surface of a conventional armrest is formed as a flat surface, when an operator places his / her forearm on the armrest and grips a control member to swing the control member back and forth, the operator may need to slide his / her forearm back and forth on the armrest to swing the control member. In such cases, there is a problem that it is difficult to swing the control member while pressing the forearm sufficiently against the armrest.

[0008] In view of the above problems, an object of the present invention is to realize stable operation of a control member.

[0009] A work machine according to one aspect of the present invention comprises a driver's seat, a control member arranged around the driver's seat, and an armrest arranged at a predetermined distance behind the control member, wherein the control member can be grasped by an operator seated in the driver's seat and swung back and forth, and the armrest has a curved surface that is convex upward when viewed from the side of the armrest, and is formed as a continuous curved surface from the front to the rear of the apex of the curved surface, and has a support surface on which the operator's forearm is placed.

[0010] The control member may have a grip that the operator holds, and a space may be provided between the grip and the armrest such that when the operator places the forearm on the support surface, holds the grip, and swings the control member back and forth, a part of the forearm may extend below at least one of the tangent to the top and the straight line connecting the lower end of the grip and the top.

[0011] The control member is swung around a swing center located below the grip, and may be configured so that when the operator grasps the lower part of the grip and swings the control member forward, at least a portion of the forearm closer to the wrist than the part resting on the armrest enters the space.

[0012] The control member is swung around a swing center located inside the grip, and may be configured so that when the operator grasps the grip and swings the control member backward, at least a portion of the forearm on the wrist side of the portion resting on the armrest enters the space.

[0013] The support surface may be a curved surface formed so that when the forearm is placed on the support surface, the control member is grasped, and the control member is swung back and forth, the contact portion between the forearm and the support surface moves on the support surface without slipping.

[0014] The work machine may include an armrest bracket that supports the armrest, and the armrest bracket may have a front-to-rear position adjustment structure that can adjust the position of the armrest in the front-to-rear direction.

[0015] The work machine may include an armrest bracket that supports the armrest, and the armrest bracket may have a vertical position adjustment structure that can adjust the vertical position of the armrest.

[0016] The armrest may be rotatable along the circumferential direction of the placement surface.

[0017] The armrest may have a cylindrical outer shape and be rotatable about a central axis of the cylindrical shape.

[0018] The control members may be arranged in a pair in front of the driver's seat, side by side in the width direction of the aircraft, and the armrests may be arranged in a pair behind each of the pair of control members, side by side in the width direction of the aircraft, and the pair of armrests may be inclined so as to move forward from the center between the pair of armrests in the width direction of the aircraft as the pair of armrests move away from each other in the width direction of the aircraft.

[0019] According to the above-described work machine, when the operator swings the control member forward and backward, the operator can move the forearm on the support surface without sliding it. This allows the operator to swing the control member while pressing the forearm sufficiently against the armrest (support surface), thereby achieving stable operation of the control member.

[0020] 5 is a schematic side view of a work machine. FIG. 5 is a side view of a driving section according to a first embodiment. FIG. 5 is a side view of a control member, a remote control valve, an armrest, etc.. FIG. 5 is a front view of the driving section. FIG. 5 is a perspective view of the armrest. FIG. 5 is a side view of the armrest. FIG. 5 is a front view of the armrest. FIG. 5 is a side view showing the attachment state of an armrest bracket. FIG. 5 is a front view as viewed from arrow D1 in FIG. 5. FIG. 5 is a plan view as viewed from arrow D2 in FIG. 5. FIG. 5 is a side view of the driving section with the control member being pushed. FIG. 5 is an enlarged side view of the control member, etc. when the control member is pushed. FIG. 5 is an enlarged side view of the control member, etc. when the control member is pushed. FIG. 5 is a side view of the driving section with the control member being pulled. FIG. 5 is an enlarged side view of the control member, etc. when the control member is pulled. FIG. 5 is a side view of the driving section according to a second embodiment. FIG. 5 is a perspective view of the driving section according to the second embodiment. FIG. 5 is a side view of the control member. FIG. 5 is a plan view showing the attachment state of the armrest. FIG. 5 is a plan view showing another attachment state of the armrest. FIG. 5 is an enlarged side view of the control member, etc. when the control member is pushed. FIG. 5 is an enlarged side view of the control member, etc. when the control member is pulled. FIG. 1 is an enlarged side view of the control member etc. when the control member is pulled. FIG. 2 is a side view of a state where a pushing operation is performed according to a first modified example. FIG. 3 is a side view of a state where a pulling operation is performed according to the first modified example. FIG. 4 is a side view showing a contact portion movement amount, a wrist angle, and a forearm swing angle. FIG. 5 is a side view of a state where a pushing operation is performed according to a second modified example. FIG. 6 is a side view of a state where a pulling operation is performed according to the second modified example. FIG. 7 is a side view of a state where a pushing operation is performed according to a third modified example. FIG. 8 is a side view of a state where a pulling operation is performed according to the third modified example. FIG. 9 is a side view of a state where a pushing operation is performed according to a fourth modified example. FIG. 10 is a side view of a state where a pulling operation is performed according to the fourth modified example. FIG. 11 is a side view of a state where a pushing operation is performed according to a fifth modified example. FIG. 12 is a side view of a state where a pulling operation is performed according to the fifth modified example. FIG. 13 is a side view of a state where a pushing operation is performed according to a sixth modified example. FIG. 14 is a side view of a state where a pulling operation is performed according to the sixth modified example. FIG. 15 is a side view of a state where a pushing operation is performed according to the seventh modified example. FIG. 16 is a side view of a state where a pulling operation is performed according to the seventh modified example. FIG. 17 is a side view of a state where a pushing operation is performed according to an eighth modified example. FIG. 18 is a side view of a state where a pulling operation is performed according to the eighth modified example. FIG. 19 is a side view of a driving section according to the third embodiment. FIG. 19 is a front view of the driving section according to the third embodiment. FIG. 19 is a side view of an armrest and an armrest bracket.FIG. 1 is a front view of an armrest and an armrest bracket. FIG. 2 is a side view of the armrest in a pushed state. FIG. 3 is an enlarged side view of the control members etc. when the control members are pushed. FIG. 4 is a side view of the armrest in a pulled state. FIG. 5 is an enlarged side view of the control members etc. when the control members are pulled. FIG. 6 is an enlarged side view of the control members etc. when the control members are pushed. FIG. 7 is an enlarged side view of the control members etc. when the control members are pulled. FIG. 8 is an enlarged side view of the control members etc. when the control members are pushed.

[0021] Hereinafter, an embodiment of the present invention will be described with reference to the drawings as appropriate.

[0022] 1 to 12 show the first embodiment.

[0023] 1 is a schematic side view showing the overall configuration of a work machine 1 according to this embodiment. In this embodiment, the work machine 1 is exemplified by a backhoe, which is a rotating work machine.

[0024] The work machine 1 is mainly composed of a lower running body 2 and an upper rotating body 3 mounted on the running body 2. The rotating body 3 is provided with a driver's seat 18 on which an operator (driver) 57 who boards the work machine 1 sits (see FIG. 8). The driver's seat 18 has a seat portion 18A and a backrest portion 18B. The seat portion 18A is the portion on which the operator 57 sits (rests his / her buttocks and thighs). The backrest portion 18B is the portion on which the seated operator 57 leans his / her back, and is provided to extend upward from the rear of the seat portion 18A.

[0025] In this embodiment, the direction toward the front of the operator 57 seated in the driver's seat 18 (the direction of arrow A1 in FIG. 1) will be described as the forward direction (the front of the aircraft), the direction toward the rear of the operator 57 (the direction of arrow A2 in FIG. 1) will be described as the rearward direction (the rear of the aircraft), the direction toward the left side of the operator 57 (the near side in FIG. 1, the direction of arrow B1 in FIG. 3) will be described as the left side, and the direction toward the right side of the operator 57 (the far side in FIG. 1, the direction of arrow B2 in FIG. 3) will be described as the right side.

[0026] Additionally, the horizontal direction perpendicular to the longitudinal direction (aircraft longitudinal direction) K1 will be described as the aircraft width direction (the direction of arrow K2 in FIG. 3 , the left-right direction). The direction from the center of the aircraft 10 in the width direction toward the right or left will be described as the aircraft width outward direction. In other words, the aircraft width outward direction is the direction away from the center of the aircraft 10 in the width direction K2. The direction opposite to the aircraft width outward direction will be described as the aircraft width inward direction. In other words, the aircraft width inward direction is the direction approaching the center of the aircraft 10 in the width direction K2.

[0027] The traveling body 2 is configured with crawler-type traveling devices 5 on both the left and right sides of a traveling frame 6. The traveling devices 5 are configured to move an endless belt-shaped crawler belt 4 in a circumferential direction using a traveling motor M1 consisting of a hydraulic motor (hydraulic actuator). A dozer device 7 is provided in front of the traveling frame 6. The dozer device 7 is configured with a blade 9 on the front end of a support arm 8 whose rear end is pivotally connected to the traveling frame 6 and which can swing up and down. The support arm 8 is driven to move up and down by the extension and contraction of a dozer cylinder C1 consisting of a hydraulic cylinder (hydraulic actuator).

[0028] The rotating body 3 includes a machine body (swivel base) 10 mounted on the traveling frame 6 so as to be rotatable about a rotation axis extending in the vertical direction, a working device 11 provided at the front of the machine body 10, and a cabin 12 mounted on the machine body 10. A driver's seat 18 is located inside the cabin 12 and is surrounded by the cabin 12.

[0029] In this embodiment, the work machine 1 is configured such that the driver's seat 18 and the like are arranged inside the cabin 12 (cabin specification), but this is not limited to this. The work machine 1 may be configured such that the driver's seat 18 is open to the outside in the fore-and-aft direction K1 and the width direction K2 of the machine body and is covered above with a roof (canopy) (canopy specification), or the driver's seat 18 is open to the outside in the fore-and-aft direction K1, the width direction K2 of the machine body and above.

[0030] The machine body 10 is equipped with an engine E, a radiator, a fuel tank, a hydraulic oil tank, a battery, etc. The machine body 10 is driven to rotate by a rotation motor M2 formed of a hydraulic motor (hydraulic actuator).

[0031] A support bracket 13 is provided at the front of the machine body 10, protruding forward from the machine body 10. A swing bracket 14 is supported on the support bracket 13 so as to be swingable about an axis extending in the vertical direction. The swing bracket 14 is driven to swing left and right by a swing cylinder C2, which is a hydraulic cylinder (hydraulic actuator).

[0032] The work device 11 has a boom 15, a boom cylinder C3, an arm 16, an arm cylinder C4, a work implement (bucket) 17, and a work implement cylinder (bucket cylinder) C5.

[0033] The boom 15 has a base pivotally connected to the upper part of the swing bracket 14 so as to be rotatable about an axis extending in the width direction K2 of the machine body, and is therefore swingable up and down. The boom cylinder C3 is provided between the boom 15 and the swing bracket 14 and extends and retracts to drive the boom 15 to swing.

[0034] The arm 16 is pivotally connected to the tip of the boom 15 so as to be rotatable about an axis extending in the width direction K2 of the machine body, and is swingable in the front-to-rear direction K1. The arm cylinder C4 is provided between the arm 16 and the boom 15 and extends and retracts to drive the arm 16 to swing.

[0035] The working implement 17 is pivotally connected to the tip of the arm 16 so as to be rotatable about an axis extending in the machine body width direction K2, and is swingable in the front-to-rear direction K1. The working implement cylinder C5 is provided across the working implement 17 and the arm 16, and extends and retracts to drive the working implement 17 to swing. In this embodiment, a bucket is illustrated as the working implement 17. Instead of the bucket, working implements (attachments) such as pallet forks or manifold forks, or working implements (hydraulic attachments) having hydraulic actuators such as sweepers, mowers, and breakers can be attached as the working implement 17.

[0036] The boom cylinder C3, the arm cylinder C4, and the implement cylinder (bucket cylinder) C5 are configured as hydraulic cylinders (hydraulic actuators).

[0037] 2A and 3, the driver's seat 18 is mounted on a seat base 21 attached to a floor 20 that forms the upper part of the aircraft body 10 or the bottom of the cabin 12. More specifically, a seat support device 22 such as a suspension device is attached to the seat base 21. The driver's seat 18 is mounted on the upper part of the seat support device 22 via a pair of left and right slide rails 23 so that its position can be adjusted in the fore-and-aft direction K1.

[0038] The driver's seat 18, together with components and devices arranged around the driver's seat 18, constitutes a driver's section 24. As shown in Figures 2A and 3, the components arranged around the driver's seat 18 include a console 26, a control member 27, an armrest 28, and a travel operating member (not shown) for operating the travel device. In the first embodiment, the console 26, the control member 27, and the armrest 28 are arranged on the side of the driver's seat 18 (on the side in the vehicle width direction K2). The travel operating member is arranged in front of the driver's seat 18.

[0039] As shown in Fig. 3, the console 26, the control member 27, and the armrest 28 are disposed on the left and right sides of the driver's seat 18, respectively. As shown in Figs. 2A and 3, the console 26 has a console bracket 29 and a console cover 30 that covers the console bracket 29. Mounting brackets 31 are provided on the left and right sides of the seat base 21. The left console bracket 29L is attached to the left mounting bracket 31L so as to be swingable about the axis of a support shaft 36 that extends in the aircraft width direction K2. The right console bracket 29R is attached to the right mounting bracket 31R.

[0040] As shown in FIG. 2A, each of the left and right console brackets 29 has a valve bracket 33 disposed at the front and upper portion of the console 26, and a remote control valve 32 is attached to an upper wall 33a of the valve bracket 33 (see FIG. 2B).

[0041] The left and right control members 27 are configured as levers that are gripped and operated by the operator 57. The control members 27 are disposed in front of the console 26 and above the remote control valves 32, with the left control member 27L being able to operate the left remote control valve 32L and the right control member 27R being able to operate the right remote control valve 32R.

[0042] 2B, the control member 27 has a grip 34 that is held by the hand of an operator 57, and a rod-shaped lever body 35 to which the grip 34 is attached. The grip 34 is attached to the upper part of the lever body 35.

[0043] The grip 34 is provided with a first switch 37 and a second switch 38. The first switch 37 is provided on the rear side of the upper part of the grip 34. The first switch 37 is, for example, a switch that is operated left and right with the thumb, such as a slide switch that can be slid left and right or a seesaw switch that can be swung left and right. The second switch 38 is provided on the front side of the upper part of the grip 34. The second switch 38 is, for example, a trigger switch.

[0044] 2B , the lever body 35 is formed of, for example, a shaft. The lower portion of the lever body 35 is connected to the remote control valve 32 via a joint mechanism (such as a universal joint) 39 so as to be swingable (tiltable) about a swing center (swing fulcrum) 40. Therefore, the swing center 40 of the control member 27 in the first embodiment is located below the grip 34. The control member 27 is configured to be returned to a neutral position by a neutral return mechanism (not shown) when not in operation.

[0045] The control member 27 can be swung at least in the front-to-rear direction K1 around a swing center 40. In this embodiment, the control member 27 can be swung in the front-to-rear direction K1, the aircraft width direction (left-to-right direction) K2, and in a diagonal direction between the front-to-rear direction K1 and the aircraft width direction K2 around the swing center 40. A boot 41 that covers the lever body 35, the joint mechanism 39, etc. is provided between the grip 34 and the remote control valve 32.

[0046] The remote control valve 32 is a pilot valve that pilot-operates a control valve that switches the direction of pressure oil for a hydraulic actuator equipped on the work machine 1. Therefore, by swinging the control member 27, it is possible to operate a hydraulically driven operation object equipped on the work machine 1 via the remote control valve 32. The remote control valve 32 pilot-operates a hydraulic actuator that drives an operation object equipped on the work machine 1. Examples of operation objects include the boom 15, the arm 16, the implement 17, and the machine body 10, but are not limited to these.

[0047] One remote control valve 32 can control two control valves. That is, each control member 27 can operate two control objects. The control member 27 can operate one of the two control objects by swinging it back and forth, and the other of the two control objects by swinging it left and right. For example, the left control member 27 can operate two of the following operations: swinging the boom 15, swinging the arm 16, swinging the implement 17, and turning the machine body 10, while the right control member 27 can operate the remaining two operations. Note that the left and right control members 27 are not limited to being configured to operate the remote control valves 32, but may also be electric joysticks that output electric signals in response to operational inputs.

[0048] 2A and 2B, the control member 27 is shown in a neutral position, and the dashed-dotted line X1 indicates the neutral position of the control member 27. Also, in Figures 2A and 2B, the dashed-dotted line X2 indicates a front swing position in which the control member 27 has been swung forward from the neutral position X1, and the dashed-dotted line X3 indicates a rear swing position in which the control member 27 has been swung rearward from the neutral position X1.

[0049] As shown in Fig. 2A, a lock lever 42 is provided on the left console 26L. When the operator 57 dismounts, the lock lever 42 is pulled up to swing the console 26 upward about the support shaft 36, and the lock lever 42 and the console 26 are repositioned so as not to interfere with the operator 57 getting on and off. In addition, pulling up the lock lever 42 disables operation of the various hydraulic actuators equipped on the work machine 1. As shown in Fig. 3, a dozer lever 43 for operating the dozer device 7 is provided on the right console 26R.

[0050] As shown in Figures 2A and 3, the left armrest 28L is positioned a predetermined distance behind the lower part of the grip 34 of the left operating member 27L, and the right armrest 28R is positioned a predetermined distance behind the lower part of the grip 34 of the right operating member 27L.

[0051] The left console bracket 29L and the right console bracket 29R are each provided with an armrest bracket 44. The left armrest 28L is attached to the left armrest bracket 44L, and the right armrest 28R is attached to the right armrest bracket 44R. The armrest bracket 44 also has a front-to-rear position adjustment structure (see FIG. 5) 46 that can adjust the position of the armrest 28 in the fore-and-aft direction K1. The armrest bracket 44 also has a vertical position adjustment structure (see FIG. 5) 47 that can adjust the position of the armrest 28 in the up-and-down direction.

[0052] As shown in FIGS. 5, 6 and 7, the armrest bracket 44 has a first plate 48, a second plate 49 and a third plate 50 formed from plate material.

[0053] The first plate 48 is formed in a flat plate shape and is fixed to the console bracket 29. More specifically, as shown in Fig. 5 , the first plate 48 is disposed on the rear side of the valve bracket 33 with its plate surface facing the front side of the aircraft, and the lower part of the front surface of the first plate 48 is fixed to the upper part of the valve bracket 33. The first plate 48 is also disposed in an inclined shape that transitions forward as it extends upward.

[0054] 5, the second plate 49 has a first portion 49a whose plate surface faces forward of the aircraft body and a second portion 49b whose plate surface faces upward, and is formed into an L-shape with the upper portion of the first portion 49a connected to the front portion of the second portion 49b. The first portion 49a is disposed in an inclined position at the same inclination angle as the first plate 48, and is attached to the first plate 48 by a pair of left and right bolts 51, overlapping the rear surface of the first plate 48. The bolts 51 pass through the first portion 49a and are threaded into screw holes 52 formed in the first plate 48.

[0055] A plurality of (three) insertion holes 53 for inserting the pair of left and right bolts 51 are formed in the up-down direction along the inclination direction of the first portion 49a for each bolt 51. The up-down position of the second plate 49 relative to the first plate 48 can be adjusted by loosening the bolt 51 to remove it from the threaded hole 52, sliding the first portion 49a linearly along the plate surface of the first plate 48 to change its position, and then screwing the bolt 51 into the threaded hole 52 and tightening it at the changed position.

[0056] The second portion 49b extends rearward from an upper portion of the first portion 49a. Specifically, the second portion 49b extends in an inclined direction that becomes upward as it extends rearward from an upper portion of the first portion 49a.

[0057] The third plate 50 is formed in a flat plate shape and is disposed so that its plate surface faces upward. The armrest 28 is fixed to the rear portion of the upper surface of the third plate 50. The third plate 50 is disposed so as to be inclined downward toward the front at the same inclination angle as the second portion 49b of the second plate 49. Therefore, the armrest 28 is also inclined downward toward the operating member 27.

[0058] The third plate 50 is placed on the upper surface of the second portion 49b of the second plate 49 and attached to the second portion 49b by a pair of front and rear bolts 54. The bolts 54 pass through the second portion 49b and are screwed into threaded holes 55 formed in the third plate 50.

[0059] At least three (three or more) insertion holes 56 for inserting the pair of front and rear bolts 54 are formed in the front-rear direction K1 along the inclination direction of the second portion 49b. The position of the third plate 50 in the front-rear direction K1 relative to the second portion 49b (second plate 49) can be adjusted by loosening the bolts 54 and removing them from the threaded holes 55, and then sliding the third plate 50 linearly along the plate surface of the second portion 49b to change its position, and then screwing and tightening the bolts 54 into the threaded holes 55 at the changed position.

[0060] The armrest 28 is adjustable in both vertical and longitudinal positions by adjusting the vertical position of the second plate 49 relative to the first plate 48 and the position of the third plate 50 relative to the second portion 49b in the front-rear direction K1 as described above. The second portion 49b of the second plate 49, the third plate 50, the bolt 54, etc. constitute a front-rear position adjustment structure 46. The first plate 48, the first portion 49a of the second plate 49, the bolt 51, etc. constitute a front-rear position adjustment structure 47.

[0061] In the present embodiment, the armrest 28 can be adjusted in three positions in the vertical direction, but this is not limiting. For example, the armrest 28 may be adjusted in two positions or four or more positions in the vertical direction. Furthermore, in the present embodiment, the armrest 28 can be adjusted in two positions in the front-rear direction K1, but this is not limiting. For example, the armrest 28 may be adjusted in three or more positions in the front-rear direction K1. Furthermore, the armrest 28 may be continuously adjustable in the vertical direction or the front-rear direction K1, or may not be adjustable in position.

[0062] As shown in FIG. 4A, the armrest 28 has a lower surface 28a that faces downward, a front surface 28b that faces forward, a rear surface 28c that is the surface opposite the front surface 28b, an upper surface 28d that is the surface opposite the lower surface 28a, and left and right side surfaces 28e.

[0063] The lower surface 28a is a rectangular flat surface having a leading edge 28a1 and a trailing edge 28a2 extending in the fuselage width direction K2 and left and right side edges 28a3 connecting the left and right ends of the leading edge 28a1 and the trailing edge 28a2. As shown in Fig. 4C, the front surface 28b is a horizontally elongated rectangular flat surface that extends upward from the leading edge 28a1 of the lower surface 28a in a direction perpendicular to the lower surface 28a. As shown in Fig. 4A, the rear surface 28c is a horizontally elongated rectangular flat surface that extends upward from the trailing edge 28a2 of the lower surface 28a in a direction perpendicular to the lower surface 28a.

[0064] As shown in Figures 8 to 11, the upper surface 28d is a support surface on which the portion 58a of the forearm (between the wrist 59 and the elbow 60) 58 of an operator 57 seated in the driver's seat 18 is placed, which is the outer portion when the arm is bent.

[0065] As shown in Figures 4B and 5, the placement surface (upper surface) 28d of the armrest 28 is curved and convex upward when viewed from the side of the armrest 28 (see arrow S1 in Figure 4A). More specifically, as shown in Figure 4A, the placement surface (upper surface) 28d is a curved surface that is continuously curved and convex upward from the upper edge 28b1 of the front surface 28b to the upper edge 28c1 of the rear surface 28c. In other words, the placement surface 28d is a curved surface that is continuously curved from the front to the rear of an apex 61 of the placement surface 28d (curved surface). As shown in Figures 4A and 4B, the apex 61 of the placement surface 28d (curved surface) is a portion where the placement surface (upper surface) 28d intersects with a vertical line 62 that extends upward from the center of the lower surface 28a in the front-rear direction K1 and is perpendicular to the lower surface 28a.

[0066] In this embodiment, as shown in Fig. 4B, the front side surface 28d1 of the mounting surface 28d extending forward from the apex 61 and the rear side surface 28d2 of the mounting surface 28d extending backward from the apex 61 are formed as curved surfaces with the same curvature (the mounting surface 28d is formed as an arcuate surface that is convex upward when viewed from the side of the armrest 28). However, this is not limited to this. The front side surface 28d1 and the rear side surface 28d2 of the mounting surface 28d may be formed as curved surfaces with different curvatures.

[0067] The armrest 28 is not limited to the above-described shape, as long as it has a placing surface 28d formed as a curved surface that is convex upward when viewed from the side of the armrest 28 and that continues from the front to the rear of the top 61 of the curved surface, and has a predetermined width in the fuselage width direction K2.

[0068] In addition, in this embodiment, the front surface 28b and the rear surface 28c of the armrest 28 are formed as flat surfaces, but this is not limited to this, and the front surface 28b and the rear surface 28c may also be curved surfaces extending from the support surface 28d.

[0069] As shown in FIG. 4A, the left and right side surfaces 28e are flat surfaces with the side edge 28a3 of the lower surface 28a as the lower edge, the side edge 28b2 of the front surface 28b as the front edge, the side edge 28c2 of the rear surface 28c as the rear edge, and the side edge 28d3 of the upper surface 28d as the upper edge.

[0070] The armrest 28 is not limited to a particular material, but at least the upper portion thereof is formed from a cushioned material.

[0071] Incidentally, when the operator 57 holds the grip 34 with his / her forearm 58 resting on the armrest 28 and swings the control member 27 in the forward / backward direction K1, by operating the control member 27 while pressing the forearm 58 against the armrest 28, stable operation can be performed even if, for example, the aircraft 10 shakes.

[0072] Furthermore, when finely manipulating the control member 27, the lower part of the grip 34 is often grasped and swung. When the lower part of the grip 34 is grasped and operated, the swing stroke (operation stroke) of the control member 27 is small and the operation is heavy. When the swing stroke (operation stroke) of the control member 27 is small, the control member 27 is easy to move with fingers etc. (easy to operate finely), and when the operation is heavy, vibrations of the aircraft 10 are less likely to be picked up, so when finely manipulating the control member 27, the lower part of the grip 34 is often grasped.

[0073] When gripping the lower part of the grip 34 and operating the control member 27 in the forward / backward direction K1, there is a limit to how far the control member 27 can be moved forward / backward while the forearm 58 is pressed against the armrest 28 by simply moving (swinging) the wrist 59, and conventionally, the control member 27 is operated by sliding the forearm 58 in the forward / backward direction K1 on the armrest 28. Therefore, conventionally, there is a problem in that it is difficult to swing the control member 27 while sufficiently pressing the forearm 58 against the armrest 28. Furthermore, when the forearm 58 of the operator 57 is in contact with the armrest 28 with bare skin, it is difficult to slide, so the operator 57 needs to move the forearm 58 while slightly lifting it off the armrest 28.

[0074] In this embodiment, the rest surface 28d on which the forearm 58 of the operator 57 rests is a curved surface that convex upward when viewed from the side of the armrest 28, and is a continuous curved surface from the front to the rear of a top 61 of the curved surface. The rest surface 28d is curved so that when the operator 57 places the forearm 58 on the rest surface 28d, grips the control member 27, and swings the control member 27 in the forward / backward direction K1, a contact portion 63 between the forearm 58 and the rest surface 28d (a fulcrum of the forearm 58 during operation) moves on the rest surface 28d without slipping (the position of the contact portion 63 on the rest surface 28d changes). Therefore, when the operator 57 swings the control member 27 in the forward / backward direction K1, the forearm 58 can move (displace) on the rest surface 28d without slipping. In detail, when swinging the control member 27 back and forth, the operator 57 can change the inclination of the forearm 58 to move the contact portion 63 between the forearm 58 and the support surface 28d without sliding (as if rolling) on ​​the curved support surface 28d.

[0075] When swinging the control member 27 in the front-rear direction K1, the forearm 58 can be moved on the placement surface 28d without sliding (by rolling contact), so the forearm 58 can be pressed sufficiently against the armrest 28 (placement surface 28d) to swing the control member 27. Consequently, stable operation of the control member 27 can be achieved.

[0076] 8 to 11 show a state in which an operator 57 places his / her forearm 58 on the placement surface 28d (armrest 28), grips the lower part (base) of the grip 34, and swings the control member 27 in the forward / backward direction K1. The operator 57 normally grips the grip 34 with the thumb 64a of his / her hand 64 positioned on the upper side and the little finger 64b positioned on the lower side.

[0077] Fig. 8 is a side view showing a state in which the control member 27 is pushed (the control member 27 is swung forward from the neutral position X1) by an operator 57 seated in the driver's seat 18. Figs. 9A and 9B show enlarged views of the control member 27, the armrest 28, the forearm 58, etc. in a state in which the control member 27 is pushed.

[0078] 9A and 9B , when the operating member 27 is pressed, the elbow 60 side of the forearm 58 (a portion of the forearm 58 closer to the elbow 60 than the longitudinal center of the forearm 58) is in contact with the support surface 28d, and a contact portion 63 between the forearm 58 and the support surface 28d is located slightly forward of the top 61 of the support surface 28d. In addition, the forearm 58 is inclined downward in front, and the wrist 59 side of the forearm 58 (a portion of the forearm 58 closer to the wrist 59 than the longitudinal center of the forearm 58) is inserted into a space 67 between the grip 34 and the armrest 28. That is, in this embodiment, a space 67 is provided between the grip 34 and the armrest 28 so that when an operator 57 places his or her forearm 58 on the support surface 28d, grasps the grip 34, and swings the control member 27 forward, the forearm 58 enters below at least one of a tangent 68 (see FIG. 9A) to the top 61 and a straight line 70 (see FIG. 9B) connecting the lower end of the grip 34 and the top 61 of the support surface 28d. As shown in FIG. 9B, the straight line 70 is a line connecting the lower end of the grip 34 in the neutral position X1 and the top 61 of the support surface 28d.

[0079] When the lower part of the grip 34 is grasped and the control member 27 is swung forward with the forearm 58 placed on the placement surface 28d, the wrist 59 side of the forearm 58 can fit into the space 67 between the grip 34 and the armrest 28, so that the tilt of the forearm 58 can be changed to perform the pushing operation, and the control member 27 can be smoothly operated. Because the tilt of the forearm 58 can be changed to perform the pushing operation, when the control member 27 is swung forward, the forearm 58 can be moved without sliding on the placement surface 28d and while being sufficiently pressed against the placement surface 28d.

[0080] 9A and 9B , when the lower portion of the grip 34 is grasped and pushed, in this embodiment, a portion of the wrist 59 side of the forearm 58 is below a tangent 68 (see FIG. 9A ) that contacts the top 61 of the support surface 28d and a straight line 70 (see FIG. 9B ) that connects the lower end of the grip 34 and the top 61 of the support surface 28d. If the upper surface of the armrest is flat, as in the conventional case, the height position of the flat surface is the position of the tangent 68, and therefore the wrist 59 side of the forearm 58 cannot be inserted below the upper surface of the armrest. Therefore, in the conventional case, when pushing the control member 27, the forearm 58 needs to be moved forward while sliding forward on the upper surface of the armrest to swing the control member 27.

[0081] Fig. 10 is a side view showing a state in which the control member 27 is pulled (the control member 27 is swung rearward from the neutral position X1) by an operator 57 seated in the driver's seat 18. Fig. 11 is an enlarged view of the control member 27, armrest 28, forearm 58, etc. in a state in which the control member 27 is pulled.

[0082] When pulling the control member 27, the hand 64 may be rotated toward the little finger 64b (the hand 64 may be swung in the ulnar flexion direction) and the wrist 59 may be bent so as to be convex outward in the width direction K2 of the aircraft (see Figure 12).

[0083] 11, when the control member 27 is pulled, the elbow 60 of the forearm 58 is in contact with the support surface 28d, and the contact portion 63 between the forearm 58 and the support surface 28d is located slightly behind the top 61 of the support surface 28d. In addition, the forearm 58 is raised higher than when the control member 27 is pushed, and the wrist 59 side of the forearm 58 is located above the tangent line 68.

[0084] Even when the control member 27 is pulled, the tilt of the forearm 58 can be changed to perform the pulling operation, and since the tilt of the forearm 58 can be changed to perform the pulling operation, when the control member 27 is swung backward, the forearm 58 can be moved without sliding on the placement surface 28d and while being pressed sufficiently against the placement surface 28d.

[0085] In the first embodiment described above, the operating stroke when swinging the control member 27 in the forward / backward direction K1 can be covered by the elbow 60 side of the forearm 58 moving smoothly on the support surface 28d, so that the moving space of the hand 64 and forearm 58 (arm) when operating the control member 27 can be designed to be small.

[0086] Furthermore, since the contact portion 63 of the forearm 58 moves on a curved surface that is convex upward when the operating member 27 is swung in the forward / backward direction K1, the armrest 28 can be made compact (reduced in size), which creates extra space for installing switches, etc.

[0087] Furthermore, when swinging the control member 27 in the aircraft width direction K2 (left and right), the forearm 58 is pressed against and fixed to the armrest 28, but when swinging the control member 27 in the front-rear direction K1 (front and back), the forearm 58 can be pressed against the armrest 28 to operate the control member 27. Therefore, when swinging the control member 27 back and forth and left and right (when performing a combined operation of simultaneously operating two operation objects), combined operation (simultaneous operation) of the two operation objects can be performed accurately. Furthermore, because the forearm 58 can be pressed against the armrest 28 both when swinging the control member 27 back and forth and when swinging it left and right, fatigue from various operations using the control member 27 can be reduced.

[0088] 13 to 36 show the second embodiment.

[0089] 13 and 14, the second embodiment differs from the first embodiment in the configuration of the driver's section 24. As shown in Fig. 13, the control members 27 are disposed around the driver's seat 18 and in front of the driver's seat 18. Also, as shown in Fig. 14, the control members 27 are provided in a pair (a left and right pair) aligned in the vehicle width direction K2 in front of the driver's seat 18.

[0090] 14, in the second embodiment as well, the driver's seat 18 is supported via a seat base 21 or the like on a floor 20 that constitutes the upper part of the aircraft body 10 or the bottom of the cabin 12. In the second embodiment, the seat base 21 is installed on the floor 20, and a seat support device 22 is provided on the seat base 21 via slide rails 23 so that the seat support device 22 can be adjusted in the fore-and-aft position, and the driver's seat 18 is mounted on this seat support device 22.

[0091] As shown in Figure 14, the pair of control members 27 are provided on a control platform 71 provided in front of the driver's seat 18. The control platform 71 has a support body 72 and a control platform main body 73. The support body 72 is located in front of the center of the driver's seat 18 in the aircraft width direction K2, and is erected on the floor 20 (aircraft body 10). The control platform main body 73 is located on top of the support body 72. The center of the control platform main body 73 in the aircraft width direction K2 and the center of the driver's seat 18 in the aircraft width direction K2 approximately coincide with each other in the aircraft width direction K2.

[0092] 14, 16, and 17, the control console main body 73 has a mounting base 74 that is long in the fuselage width direction K2, and a pair of left and right support bases 75 that extend rearward from the left and right portions of the mounting base 74. The left and right support bases 75 are formed so that the distance between them in the fuselage width direction K2 gradually increases toward the rear. In other words, the pair of support bases 75 are formed in an inclined shape that moves away from each other in the fuselage width direction K2 from the center of the pair of support bases 75 in the fuselage width direction K2 toward the rear.

[0093] 14 , a pair of (left and right) control members 27 are arranged side by side in the fuselage width direction K2 on the mounting base 74. Specifically, one (left) control member 27L is provided on one side (left side) of the center of the mounting base 74 (driver's seat 18) in the fuselage width direction K2. The other (right) control member 27R is provided on the other side (right side) of the center of the mounting base 74 in the fuselage width direction K2. A monitor 76 is disposed between the left and right control members 27 on the mounting base 74.

[0094] In this second embodiment, the operator 57 seated in the driver's seat 18 holds the control member 27 with his upper body leaning forward and his left and right forearms 58 extending outward with the distance between them gradually increasing as they move rearward.

[0095] 15 , the mounting base 74 has a pedestal portion 77 provided at a position where the control member 27 is to be disposed. A base 78 is attached to each pedestal portion 77. The control member 27 is connected to the base 78 via a joint mechanism (universal joint or the like) 39 so as to be swingable about a swing center 40. The control member 27 is configured to be returned from an operated position to a neutral position, which is the position before operation, by a neutral return mechanism (not shown).

[0096] Each control member 27 has a hollow grip 34 that opens downward. As shown in Fig. 15, a joint mechanism 39 is provided inside the grip 34. That is, in the second embodiment, the swing center 40 is located inside the grip 34. As shown in Fig. 18, an operator 57 normally holds the grip 34 with the thumb 64a of his hand 64 positioned on the upper side and the little finger 64b positioned on the lower side, so that the swing center 40 is located inside the palm of his hand.

[0097] In the second embodiment, the control member 27 can also be swung at least in the longitudinal direction K1 around the swing center 40. More specifically, the control member 27 can be swung in the longitudinal direction K1 and the fuselage width direction K2 (front-rear and left-right) around the swing center 40. The control member 27 can also be swung in a diagonal direction between the longitudinal direction K1 and the fuselage width direction K2 around the swing center 40. As in the first embodiment, each control member 27 can operate two operation targets. The area between the grip 34 and the base portion 77 is covered with a boot 41.

[0098] As shown in FIG. 14 , the armrests 28 are disposed at a predetermined distance behind each of the pair of control members 27. Specifically, a pair of armrests 28 (one left and one right) are provided, disposed behind one (left) control member 27L and the other (right) control member 27R, respectively. Furthermore, as shown in FIGS. 16 and 17 , the armrests 28 are disposed at positions offset from the center of the pair of armrests 28 in the width direction K2 of the vehicle relative to the control members 27 on the same side in the vehicle width direction K2. Specifically, the left armrest 28L is offset to the left of the left control member 27L, and the right armrest 28R is offset to the right of the right control member 27R. This allows the forearms 58 of the operator 57, who grips the control members 27 with their upper body leaning forward and their elbows 60 extended outward, to be comfortably rested on the forearms 58.

[0099] The pair of armrests 28 are provided, for example, along the fuselage width direction K2 as shown in Fig. 16. Furthermore, the pair of armrests 28 may be inclined so as to transition forward from the center of the pair of armrests 28 in the fuselage width direction K2 as the pair of armrests 28 move away from each other in the fuselage width direction K2 as shown in Fig. 17. Specifically, the left armrest 28L may be inclined so as to transition forward as it progresses to the left, and the right armrest 28R may be inclined so as to transition forward as it progresses to the right.

[0100] As shown in FIG. 13 , the left and right armrests 28 are attached to the support base 75 on the same side in the vehicle width direction K2. Also in the second embodiment, each armrest 28 has a lower surface 28a facing downward, a front surface 28b facing forward, a rear surface 28c opposite the front surface 28b, an upper surface 28d opposite the lower surface 28a, and left and right side surfaces 28e. As shown in FIGS. 18 , 19A, and 19B , the upper surface 28d serves as a support surface 28d on which the forearm 58 of an operator 57 seated in the driver's seat 18 is placed. The support surface (upper surface) 28d is curved and convex upward when viewed from the side of the armrest 28 (see arrow S1 in FIGS. 16 and 17 ). The support surface 28d is similar to that in the first embodiment, and therefore will not be described in detail. Furthermore, the same effects as those of the first embodiment can be obtained, and therefore a description thereof will be omitted.

[0101] 18, 19A, and 19B show a state in which an operator 57 places his / her forearm 58 (more specifically, the portion 58a of the forearm 58 that is on the outer side when the arm is bent) on the placement surface 28d (armrest 28), grasps the grip 34, and swings the control member 27 in the forward / backward direction K1. More specifically, FIG. 18 shows a state in which the control member 27 is pushed. 19A and 19B show a state in which the control member 27 is pulled. In the configuration shown in FIGS. 18 and 19A, a tangent 68 that touches the top 61 of the placement surface 28d extends in the forward / backward direction K1 and the horizontal direction, and passes through the swing center 40.

[0102] When the operating member 27 is pushed from the neutral position X1, the wrist 59 rotates toward the little finger 64b (rotating the hand 64 in the ulnar flexion direction). The contact portion 63 of the forearm 58 moves backward on the armrest 28 (support surface 28d). As shown in Figure 18, in the pushing state, the middle portion of the forearm 58 slightly enters the space 67 between the grip 34 and the armrest 28. Furthermore, the contact portion 63 between the forearm 58 and the support surface 28d is located slightly forward of the top portion 61.

[0103] When the operating member 27 is pulled from the neutral position X1, the wrist 59 is rotated toward the thumb 64a (the hand 64 is rotated in the bending direction), and the forearm 58 is tilted downward. The contact portion 63 of the forearm 58 moves forward on the armrest 28 (the support surface 28d).

[0104] 19A and 19B , during a pulling operation, the forearm 58 (a part of the forearm 58 on the wrist 59 side) enters a space 67 between the grip 34 and the armrest 28. In other words, when the operator 57 grips the grip 34 and swings the control member 27 rearward, at least a part of the forearm 58 on the wrist 59 side of the part resting on the armrest enters into the space 67. Therefore, in the second embodiment, when the operator 57 places the forearm 58 on the mounting surface 28d, grips the grip 34, and swings the control member 27 rearward, the space 67 is provided between the grip 34 and the armrest 28, so that the forearm 58 enters below at least one of a tangent 68 to the top 61 (see FIG. 19A ) and a straight line 70 (see FIG. 19B ) connecting the lower end of the grip 34 and the top 61 of the mounting surface 28d. As shown in FIG. 19B, the straight line 70 connects the lower end of the grip 34 at the neutral position X1 to the top 61 of the mounting surface 28d.

[0105] Furthermore, a contact portion 63 between the forearm 58 and the placement surface 28 d is located on the front side of the top portion 61 .

[0106] In the driving section 24 of the second embodiment, for example, if the armrest 28 is not provided, the control member 27 can be operated by resting the elbow 60 on the support base 75. In this case, that is, when the control member 27 is operated by resting the elbow 60 on the support base 75, the support base 75 needs to have a long distance in the front-to-rear direction K1, but in this embodiment, the portion 79 on the support base 75 behind the armrest 28 can be omitted, and the control stand 71 can be formed compactly.

[0107] 20 to 36 show modifications of the second embodiment.

[0108] Figures 20 and 21 show a first modified example. In this first modified example, the position Y2 of the armrest 28 is moved forward by a predetermined distance H1 from the position Y1 of the armrest 28 in the basic configuration shown in Figures 18, 19A, and 19B. Figure 20 shows the case where the operating member 27 is pushed, and Figure 21 shows the case where the operating member 27 is pulled.

[0109] Here, as shown in Figure 22, the contact portion movement amount, which is the amount of movement of the contact portion 63 on the support surface 28d when the operating member 27 is swung in the forward / backward direction K1 (the amount of change in the position of the contact portion 63), is defined as 81, the wrist angle, which is the angle of the wrist 59 when a pulling operation is performed, is defined as 82, and the angle formed by the forearm 58 when a pushing operation is performed and the forearm 58 when a pulling operation is performed is defined as 83.

[0110] When comparing the first modified example with the basic form, the contact point movement amount (movement amount of the fulcrum of the forearm 58) 81, wrist angle 82, and forearm swing angle 83 all increase in the first modified example compared to the basic form.

[0111] 23 and 24 show a second modified example. In this second modified example, the armrest 28 is positioned at position Y2, the same as in the first modified example, and the curved surface of the mounting surface 28d has a larger R-shape than the armrest 28 of the first modified example (basic form). Fig. 23 shows the case where the operating member 27 is pushed, and Fig. 24 shows the case where the operating member 27 is pulled.

[0112] Comparing the second modified example with the first modified example, the contact portion movement amount 81, wrist angle 82, and forearm swing angle 83 all increase in the second modified example compared to the first modified example.

[0113] 25 and 26 show a third modified example. In the third modified example, the position of the armrest 28 is moved forward a predetermined distance H1 to position Y2 from position Y1 of the armrest 28 in the basic configuration, as in the first modified example, and the curved surface shape of the mounting surface 28d is a smaller R shape than that of the armrest 28 in the first modified example (basic configuration). Also, Fig. 25 shows the case where the operating member 27 is pushed, and Fig. 26 shows the case where the operating member 27 is pulled.

[0114] Comparing the third modified example with the first modified example, the contact portion movement amount 81, wrist angle 82, and forearm swing angle 83 are all smaller in the second modified example than in the first modified example.

[0115] 27 and 28 show a fourth modified example. In the fourth modified example, the placement surface 28d is raised by a predetermined distance H2 relative to the position Y1 of the armrest 28 in the basic configuration, and the position of the armrest 28 in the front-rear direction K1 is moved rearward by a predetermined distance H3 to a position Y3. Also, Fig. 27 shows the case where the operating member 27 is pushed, and Fig. 28 shows the case where the operating member 27 is pulled.

[0116] When comparing the fourth modified example with the basic form, the contact portion movement amount 81 is smaller, the wrist angle 82 is larger, and the forearm swing angle 83 is approximately the same in the fourth modified example compared to the basic form.

[0117] 29 and 30 show a fifth modified example. In the fifth modified example, the position of the armrest 28 in the front-rear direction K1 is the same as the position Y1 of the armrest 28 in the basic form, and the height of the placement surface 28d is lowered by a predetermined distance H4. Also, Fig. 29 shows the case where the operating member 27 is pushed, and Fig. 30 shows the case where the operating member 27 is pulled.

[0118] Comparing the fifth modified example with the basic form, the contact portion movement amount 81 is increased, the wrist angle 82 is decreased, and the forearm swing angle 83 is substantially the same in the fifth modified example compared to the basic form.

[0119] 31 and 32 show a sixth modified example. In the sixth modified example, the height of the placement surface 28d is lowered by a larger amount H5 than in the fifth modified example, relative to the position Y1 of the armrest 28 in the basic form. Also, Fig. 31 shows the case where the operating member 27 is pushed, and Fig. 32 shows the case where the operating member 27 is pulled.

[0120] When comparing the sixth modified example with the fifth modified example, in the sixth modified example, the contact part movement amount 81 increases, the wrist angle 82 decreases, and the forearm swing angle 83 is approximately the same as in the fifth modified example.

[0121] Figures 33 and 34 show a seventh modified example. In the seventh modified example, the height of the placement surface 28d is lowered by a larger amount H6 than in the sixth modified example, relative to the position Y1 of the armrest 28 in the basic form. Also, Figure 33 shows the case where the operating member 27 is pushed, and Figure 34 shows the case where the operating member 27 is pulled.

[0122] When comparing the seventh modified example with the sixth modified example, in the seventh modified example, the contact part movement amount 81 increases, the wrist angle 82 decreases, and the forearm swing angle 83 is approximately the same as in the sixth modified example.

[0123] Figures 35 and 36 show an eighth modified example. In the eighth modified example, the height of the mounting surface 28d of the armrest 28 in the sixth modified example, indicated by the two-dot chain line Y4, is the same as that of the armrest 28 in the sixth modified example, and the curved surface of the mounting surface 28d has a smaller R-shape than the armrest 28 in the sixth modified example (basic form). Figure 35 shows the case where the operating member 27 is pushed, and Figure 36 shows the case where the operating member 27 is pulled.

[0124] Comparing the eighth modified example with the sixth modified example, the contact portion movement amount 81, wrist angle 82, and forearm swing angle 83 are substantially the same in the eighth modified example as in the sixth modified example.

[0125] The other configurations of the second embodiment (the configuration of the work machine 1) are configured substantially the same as those of the first embodiment, and therefore description thereof will be omitted.

[0126] 37 to 50 show a third embodiment.

[0127] In the third embodiment, the armrest 28 has a cylindrical outer shape and is rotatable about a central axis (see FIGS. 39 and 40) 87. In the second embodiment, the armrest 28 is formed in a cylindrical shape having a central axis extending in the fuselage width direction K2.

[0128] Since the armrest 28 in this third embodiment has a cylindrical outer shape, the upper surface of the armrest 28, which is the support surface 28d on which the forearm 58 of the operator 57 rests, is a curved surface that is convex upward when viewed from the side of the armrest 28, and is formed as a continuous curved surface from the front to the rear of the apex 61 of the curved surface.

[0129] 37 to 48 show an embodiment in which a cylindrical armrest 28 is used in the driver's section 24 of the first embodiment. That is, as shown in Fig. 37 and Fig. 38, control members 27 are disposed on the left and right of the driver's seat 18, and cylindrical armrests 28 are disposed behind each of the left and right control members 27.

[0130] 37 to 48 show the main components, and parts not shown are configured in the same way as in the first embodiment.

[0131] 39 and 40 , the central axis 87 of the armrest 28, which has a cylindrical outer shape, extends in the fuselage width direction K2. More specifically, the armrest 28 is rotatably supported on the armrest bracket 86 via a pivotal support shaft 88 having an axis 88a extending in the fuselage width direction K2. The central axis 87 of the armrest 28 is concentric with the axis 88a of the pivotal support shaft 88.

[0132] 39 and 40 , the armrest bracket 86 has a first plate member 89, a second plate member 90, and a third plate member 91. The first plate member 89 is configured similarly to the first plate 48 of the first embodiment, and is fixed to the console bracket 29. That is, the first plate member 89 is formed in a flat plate shape and is disposed behind the valve bracket 33 with its plate surface facing toward the front of the aircraft, and the lower part of the front surface of the first plate member 89 is fixed to the upper part of the valve bracket 33. In addition, the first plate member 89 is disposed in an inclined shape that transitions forward as it extends upward.

[0133] The second plate member 90 has a first portion 90a whose plate surface faces forward of the aircraft body and a second portion 90b whose plate surface faces upward, and is formed in an L-shape with the upper portion of the first portion 90a connected to the front portion of the second portion 90b. The first portion 90a is disposed in an inclined position at the same inclination angle as the first plate member 89, and is attached to the first plate member 89 by a pair of left and right bolts 92, overlapping the rear surface of the first plate member 89. The bolts 92 pass through the first portion 90a and are screwed into screw holes 93 formed in the first plate member 89.

[0134] A plurality of (three) insertion holes 94 for inserting the pair of left and right bolts 92 are formed for each bolt 92 in the up-down direction along the inclination direction of the first portion 90a. The up-down position of the second plate member 90 relative to the first plate member 89 can be adjusted by loosening the bolt 92 to remove it from the threaded hole 93, sliding the first portion 90a linearly along the plate surface of the first plate member 89 to change its position, and then screwing the bolt 92 into the threaded hole 93 and tightening it at the changed position. The first plate member 89, the first portion 90a of the second plate member 90, the bolt 92, etc. constitute a up-down position adjustment structure 47 that can adjust the up-down position of the armrest 28.

[0135] The second portion 90b extends rearward from an upper portion of the first portion 90a. More specifically, the second portion 90b extends in an inclined direction that gradually becomes upward as it extends rearward from the upper portion of the first portion 90a.

[0136] The third plate members 91 are disposed on the left and right sides of the second plate member 90. That is, a pair of left and right third plate members 91 are provided. The front portions of each of the left and right third plate members 91 are fixed to the second portion 90b. The rear portions of each of the left and right third plate members 91 protrude rearward beyond the second portion 90b. An armrest 28 is disposed between the left and right third plate members 91 and behind the second portion 90b. A ring-shaped disk 96 is provided between the armrest 28 and each third plate member 91. The pivot shaft 88 is provided to penetrate one third plate member 91, one ring-shaped disk 96, the armrest 28, the other ring-shaped disk 96, and the other third plate member 91.

[0137] In the above embodiment, the structure that allows the armrest 28 to rotate freely around the central axis 87 (axial center) may be such that the armrest 28 is fixed to a pivotal shaft 88 and the pivotal shaft 88 is supported on the armrest bracket 86 so as to be rotatable around the axis, or the pivotal shaft 88 may be inserted into the armrest 28 so as to be rotatable relative to the armrest 28 and the pivotal shaft 88 may be fixed to the armrest bracket 86.

[0138] In this embodiment, the armrest bracket 86 is illustrated as being structured so that the front-to-back position of the armrest 28 cannot be adjusted, but the armrest bracket 86 may also be configured so that the front-to-back position of the armrest 28 can be adjusted.

[0139] 41 and 42 show a state in which the operator 57 is holding the lower part of the grip 34 and pushing the control member 27. In this state in which the operator 57 is pushing the control member 27, the elbow 60 side of the forearm 58 of the operator 57 is resting on the armrest 28.

[0140] 43 and 44 show a state in which the operator 57 is pulling the control member 27 while grasping the lower part of the grip 34. In this state in which the operator 57 is pulling the control member 27, the middle part of the forearm 58 of the operator 57 is resting on the armrest 28.

[0141] 45 shows a state in which the operator 57 is holding the middle portion of the grip 34 and pushing the control member 27. In this state in which the operator 57 is pushing the control member 27, the elbow 60 side of the forearm 58 of the operator 57 is resting on the armrest 28.

[0142] 46 shows a state in which the control member 27 is pulled by grasping the middle portion of the grip 34. In this state in which the control member 27 is pulled, the middle portion of the forearm 58 of the operator 57 is placed on the armrest 28.

[0143] 47 shows a state in which the upper part of the grip 34 is grasped and the control member 27 is pushed (including the case in which the first switch 37 and the like are operated). In this state in which the control member 27 is pushed, the elbow 60 side of the forearm 58 of the operator 57 is resting on the armrest 28.

[0144] 48 shows a state in which the upper part of the grip 34 is grasped and the control member 27 is pulled (including when the first switch 37 and the like are operated). In this state in which the control member 27 is pulled, the middle part of the forearm 58 of the operator 57 is placed on the armrest 28.

[0145] 49 and 50 show an embodiment in which a cylindrical armrest 28 is used in the driver's section 24 of the second embodiment. That is, a pair of control members 27 are arranged side by side in the vehicle width direction K2 in front of the driver's seat 18, and cylindrical armrests 28 are arranged behind each of the left and right control members 27. In the embodiment shown in FIGS. 49 and 50, only the main components are shown. Portions not shown are configured in the same way as in the second embodiment.

[0146] 49 and 50, the armrest bracket 97 is fixed to the support base 75. This armrest bracket 97 is structured so that the front-to-back and up-down positions of the armrest 28 cannot be adjusted, but the armrest bracket 97 may be structured so that the front-to-back and up-down positions of the armrest 28 can be adjusted. In the embodiment shown in Figures 49 and 50, as in the second embodiment, the rear portion 79 of the armrest bracket 97 on the support base 75 can be omitted, allowing the control console 71 to be formed compactly.

[0147] 49 shows a state in which the grip 34 is grasped and the control member 27 is pushed (including the case in which the first switch 37 and the like are operated). In this state in which the control member 27 is pushed, the elbow 60 side of the forearm 58 of the operator 57 is resting on the armrest 28.

[0148] 50 shows a state in which the grip 34 is grasped and the control member 27 is pulled (including when the first switch 37 and the like are operated). In this state in which the control member 27 is pulled, the elbow 60 side of the forearm 58 of the operator 57 is resting on the armrest 28.

[0149] In the third embodiment, when the control member 27 is swung in the front-rear direction K1, the armrest 28 rotates in response to the movement of the forearm 58 in the front-rear direction K1, causing the contact portion 63 between the forearm 58 and the mounting surface 28d to move without sliding on the mounting surface 28d (the position of the contact portion 63 on the mounting surface 28d changes), allowing the forearm 58 to move without sliding (by rolling contact) on the mounting surface 28d. This allows the forearm 58 to be swung while sufficiently pressing the forearm 58 against the armrest 28 (mounting surface 28d). This in turn allows for stable operation of the control member 27.

[0150] Furthermore, in the third embodiment, the forearm 58 can move smoothly in the fore-and-aft direction K1 of the aircraft not only when the lower part of the grip 34 is grasped, but also when any part of the grip 34 in the vertical direction is grasped, or when the first switch 37 or the like is operated.

[0151] Furthermore, when the lower part of the grip 34 is grasped to operate the control member 27, the operation stroke of the control member 27 can be absorbed by the movement of the shoulder, eliminating the need to move the wrist 59 and / or forearm 58 outward, and making the space required for operation compact.

[0152] In the third embodiment, the armrest 28 does not necessarily have to have a cylindrical outer shape. It is sufficient that the upper surface 28d of the armrest 28 is a support surface 28d on which the forearm 58 of the operator 57 rests, that the support surface 28d is a curved surface that is convex upward when viewed from the side of the armrest 28, and that the curved surface 28d is a continuous curved surface from the front to the rear of the apex 61 of the curved surface. It is also sufficient that the armrest 28 is rotatable in the circumferential direction of the support surface 28d.

[0153] In this embodiment, the armrest 28 does not have to rotate 360°. A spring (biasing member) may be provided to keep the armrest 28 stationary in its initial position (a position where the forearm 58 is not placed on the armrest 28).

[0154] A preferred embodiment of the present invention provides a work machine 1 described in the following items: (Item 1) The work machine 1 includes a driver's seat 18, a control member 27 arranged around the driver's seat 18, and an armrest 28 arranged at a predetermined distance behind the control member 27, the control member 27 being gripped by an operator 57 seated in the driver's seat 18 and capable of swinging in the front-to-rear direction K1, the armrest 28 having a curved surface that is convex upward when viewed from the side of the armrest 28, a continuous curved surface extending from the front to the rear of a peak 61 of the curved surface, and a support surface 28d on which a forearm 58 of the operator 57 is placed.

[0155] According to the work machine 1 according to this item 1, the forearm 58 can be moved on the support surface 28d without slipping. This allows the swing operation of the control member 27 to be performed while the forearm 58 is sufficiently pressed against the armrest 28 (support surface 28d), thereby realizing stable operation of the control member 27.

[0156] (Item 2) The operating member 27 has a grip 34 that is held by the operator 57, and a space 67 is provided between the grip 34 and the armrest 28 so that, when the operator 57 places the forearm 58 on the mounting surface 28d, holds the grip 34, and swings the operating member 27 in the front-to-rear direction K1, a part of the forearm 58 enters below at least one of a tangent 68 to the top 61 and a straight line 70 that connects a lower end of the grip 34 and the top 61.

[0157] According to the work machine 1 relating to this item 2, when the operator 57 grasps the grip 34 and operates the control member 27 in the forward / backward direction K1, the forearm 58 enters the space 67 provided between the grip 34 and the armrest 28, allowing the operator 57 to operate the control member 27 smoothly.

[0158] (Item 3) The operating member 27 is swung around a swing center 40 located below the grip 34, and the working machine 1 described in Item 2 is configured such that when the operator 57 grasps the lower part of the grip 34 and swung the operating member 27 forward, at least a part of the forearm 58 on the wrist 59 side of the part of the forearm 58 resting on the armrest 28 enters into the space 67.

[0159] According to the work machine 1 relating to this item 3, the control member 27 is swung around the swing center 40 located below the grip 34, and when the operator 57 grasps the lower part of the grip 34 and operates the control member 27 forward, the forearm 58 enters the space 67 provided between the grip 34 and the armrest 28 66, allowing the operator 57 to operate the control member 27 smoothly.

[0160] (Item 4) The operating member 27 is swung around a swing center 40 located inside the grip 34, and the working machine 1 described in Item 2 is configured such that when the operator 57 grasps the grip 34 and swung the operating member 27 rearward, at least a portion of the forearm 58 on the wrist 59 side of the portion resting on the armrest 28 enters the space 67.

[0161] According to the work machine 1 relating to this item 4, the control member 27 is swung around the swing center 40 located inside the grip 34, and when the operator 57 grasps the grip 34 and swings the control member 27 rearward, the forearm 58 enters the space 67 provided between the grip 34 and the armrest 28 66, allowing the operator 57 to smoothly operate the control member 27.

[0162] (Item 5) The work machine 1 according to any one of Items 1 to 4, wherein the placement surface 28d is a curved surface formed so that, when the forearm 58 is placed on the placement surface 28d, the control member 27 is gripped, and the control member 27 is swung in the forward / backward direction K1, a contact portion 63 between the forearm 58 and the placement surface 28d moves on the placement surface 28d without slipping.

[0163] According to the work machine 1 relating to item 5, when the forearm 58 is placed on the armrest 28 and the control member 27 is grasped and the control member 27 is swung in the forward / backward direction K1, the forearm 58 can be pressed sufficiently against the armrest 28 to sway the control member 27.

[0164] (Item 6) The work implement 1 according to any one of Items 1 to 5, further comprising an armrest bracket 86 that supports the armrest 28, the armrest bracket 86 having a front-to-rear position adjustment structure 46 that can adjust the position of the armrest 28 in the front-to-rear direction K1.

[0165] According to the work machine 1 according to this item 6, the position of the armrest 28 in the front-rear direction K1 relative to the control member 27 can be set to an appropriate position.

[0166] (Item 7) The work implement 1 according to any one of Items 1 to 6, further comprising an armrest bracket 86 that supports the armrest 28, and the armrest bracket 86 has a vertical position adjustment structure 47 that can adjust the vertical position of the armrest 28.

[0167] According to the work machine 1 according to this item 7, the vertical position of the armrest 28 relative to the control member 27 can be set to an appropriate position.

[0168] (Item 8) The work machine 1 according to any one of Items 1 to 7, wherein the armrest 28 is rotatable in a circumferential direction of the placement surface 28d.

[0169] According to the work machine 1 relating to item 8, when the forearm 58 is placed on the armrest 28, the control member 27 is grasped, and the control member 27 is swung in the forward / backward direction K1, the armrest 28 moves in accordance with the movement of the forearm 58 in the forward / backward direction K1, so that the forearm 58 can be pressed sufficiently against the armrest 28 while the control member 27 is swung.

[0170] (Item 9) The work machine 1 according to any one of Items 1 to 8, wherein the armrest 28 has a cylindrical outer shape and is rotatable about a central axis 87 of the cylindrical shape.

[0171] With the work machine 1 according to item 9, when the forearm 58 is placed on the armrest 28, the control member 27 is grasped, and the control member 27 is swung in the forward / backward direction K1, the armrest 28 moves in accordance with the movement of the forearm 58 in the forward / backward direction K1, so that the forearm 58 can be pressed sufficiently against the armrest 28 while the control member 27 is swung.

[0172] (Item 10) The work machine 1 according to any one of Items 1 to 9 except for Item 3, wherein the control members 27 are provided in a pair lined up in the machine body width direction K2 in front of the driver's seat 18, the armrests 28 are each disposed behind the pair of control members 27 and provided in a pair lined up in the machine body width direction K2, and the pair of armrests 28 are inclined so as to transition forward from a center between the pair of armrests 28 in the machine body width direction K2 as the pair of armrests 28 move in directions away from each other in the machine body width direction K2.

[0173] According to the work machine 1 relating to this item 10, a pair of control members 27 are arranged in line in the width direction K2 of the machine body in front of the driver's seat 18, and the control members 27 can be swung while the forearm 58 is pressed sufficiently against the armrest 28, thereby achieving stable operation of the control members 27.

[0174] Although one embodiment of the present invention has been described above, the embodiment disclosed herein should be considered to be illustrative in all respects and not restrictive. 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.

[0175] REFERENCE SIGNS LIST 1 Work machine 18 Driver's seat 27 Control member 28 Armrest 28d Placement surface 34 Grip 40 Swing center 44 Armrest bracket 46 Fore-aft position adjustment structure 47 Up-down position adjustment structure 57 Operator 58 Forearm 58a Part 59 Wrist 60 Elbow 61 Top 63 Contact portion 66 Between grip and armrest 67 Space 87 Central axis K1 Fore-aft direction K2 Machine body width direction

Claims

1. The driver's seat and A control member disposed around the driver's seat; an armrest arranged at a predetermined distance behind the operation member so as not to move from a position relative to the operation member when the operation member is not being operated, even when the operation member is operated; Equipped with The operation member can be gripped by an operator seated in the driver's seat and can be operated to swing in the forward and backward directions, The armrest is a curved surface that is convex upward when viewed from the side of the armrest, and is formed as a continuous curved surface from the front to the rear of the top of the curved surface, and has a support surface on which the operator's forearm is placed.

2. The control member has a grip that is held by the operator, 2. The work machine according to claim 1, wherein a space is provided between the grip and the armrest such that when the operator places the forearm on the support surface, grasps the grip, and swings the control member back and forth, a part of the forearm extends below at least one of the tangent to the top and the straight line connecting the lower end of the grip and the top.

3. The control member is swung around a swing center located below the grip, 3. The work machine according to claim 2, wherein when the operator grasps the lower part of the grip and swings the control member forward, at least a portion of the forearm on the wrist side of the part resting on the armrest enters into the space.

4. The operating member is swung around a swing center located inside the grip, 3. The work machine according to claim 2, wherein when the operator grasps the grip and swings the control member rearward, at least a portion of the forearm closer to the wrist than the portion resting on the armrest enters into the space.

5. The work machine according to any one of claims 1 to 4, wherein the support surface is a curved surface formed so that when the forearm is placed on the support surface, the control member is grasped, and the control member is swung back and forth, the contact portion between the forearm and the support surface moves on the support surface without slipping.

6. an armrest bracket for supporting the armrest; 5. The work machine according to claim 1, wherein the armrest bracket has a front-rear position adjustment structure that allows the position of the armrest in the front-rear direction to be adjusted.

7. an armrest bracket for supporting the armrest; 5. The work machine according to claim 1, wherein the armrest bracket has a vertical position adjustment structure that allows the vertical position of the armrest to be adjusted.

8. 5. The work machine according to claim 1, wherein the armrest is rotatable in the circumferential direction of the mounting surface.

9. 5. The work machine according to claim 1, wherein the armrest has a cylindrical outer shape and is rotatable about a central axis of the cylindrical shape.

10. The control members are provided in pairs in front of the driver's seat and aligned in the aircraft width direction, The armrests are provided in pairs, arranged behind the pair of control members and aligned in the fuselage width direction, The work machine according to any one of claims 1 to 4, wherein the pair of armrests are inclined so as to transition forward from the center between the pair of armrests in the width direction of the machine body as the pair of armrests move away from each other in the width direction of the machine body.