Working machine

Abstract

To provide a working machine capable of appropriately holding a microphone.SOLUTION: The working machine 1 includes the operator seat 6 on which the operator is seated, the cabin 5 including the operator seat 6, the microphone stay 81 provided in the cabin 5, the hands-free microphone 73 attached to the microphone stay 81 by the adhesive member 84, and the microphone holder 86 attached to the microphone stay 81 and holding the microphone 73 attached to the microphone stay 81.SELECTED DRAWING: Figure 12

Description

[Technical Field]

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

[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 is provided with a cabin that surrounds a driver's seat where an operator sits. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2020-148070 Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, it is being considered to equip work machines with a function that allows the operator to make hands-free calls by installing a hands-free microphone inside the cabin. However, in the case of work machines, vibrations are generated during operation, and simply attaching a microphone to a window or interior panel with an adhesive member, as with microphones installed in automobiles, may result in the adhesive member peeling off and the microphone falling off.

[0006] An object of the present invention is to provide a work machine that can properly hold a microphone. [Means for solving the problem]

[0007] A work machine according to one aspect of the present invention comprises a driver's seat in which an operator sits, a cabin containing the driver's seat, a microphone stay provided inside the cabin, a hands-free microphone attached to the microphone stay with an adhesive material, and a microphone holder attached to the microphone stay, which holds the microphone attached to the microphone stay. [Effects of the Invention]

[0008] According to the above-described work machine, the microphone can be held in place even if the adhesive member is peeled off. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. [Figure 2] This is a perspective view of the cabin as seen from diagonally forward left. [Figure 3A] FIG. 2 is a front view of the cabin. [Figure 3B] This is a side view of the left part of the cabin seen from the right side. [Figure 4] FIG. [Figure 5] FIG. [Figure 6] FIG. 2 is a perspective view of the guide rail and the swing link as seen from diagonally rear right. [Figure 7] FIG. 2 is a perspective view of the locking device as seen from the rear right. [Figure 8] FIG. 2 is a rear view of the front left side of the cabin as seen from the inside of the cabin. [Figure 9] 10A and 10B are side views showing the opening and closing operation of the front panel. [Figure 10] FIG. 10 is a side view showing a state in which the front panel is in a retracted position. [Figure 11] FIG. 1 is a configuration diagram showing a hands-free system. [Figure 12] This is an oblique view of the upper left front part of the cabin as seen from inside the cabin. [Figure 13]This is a side view of the upper left front part of the cabin as seen from the right. [Figure 14] FIG. 1 is a plan cross-sectional view of the upper left front part of the cabin. [Figure 15] FIG. 2 is an exploded perspective view of a microphone, a microphone stay, and a microphone holder. [Figure 16] FIG. 2 is a perspective view of the microphone seen from above. [Figure 17] FIG. 2 is a perspective view of the microphone as seen from below. [Figure 18] FIG. 2 is a perspective view of the microphone holder as seen from above. [Figure 19] FIG. 2 is a perspective view of the microphone holder as seen from below. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings as appropriate.

[0011] 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 swivel work machine.

[0012] As shown in FIG. 1, the work machine 1 comprises a machine body (swivel) 2, a traveling device 3, and a work device 4. A cabin 5 is mounted on the machine body 2. Inside the cabin 5, a driver's seat 6 where an operator sits is provided. The driver's seat 6 is surrounded by the cabin 5. In other words, the cabin 5 contains the driver's seat 6. The driver's seat 6 has a seat portion 6A for the operator to sit on (which supports the operator's buttocks), and a backrest portion 6B that supports the operator's back.

[0013] In this embodiment, the direction toward the front of the operator seated in the driver's seat 6 of the work machine 1 (the direction of arrow A1 in Figure 1) is referred to as the forward direction (the front of the machine body), and the direction toward the rear of the operator (the direction of arrow A2 in Figure 1) is referred to as the rear direction (the rear of the machine body).

[0014] In addition, the direction toward the left side of the operator (the front side of Figure 1, the direction of arrow B1 in Figure 2) is referred to as the left side, and the direction toward the right side of the operator (the back side of Figure 1, the direction of arrow B2 in Figure 2) is referred to as the right side.

[0015] Additionally, the horizontal direction perpendicular to the longitudinal direction (front-rear direction of the fuselage) K1 will be referred to as the fuselage width direction (left-right direction) K2 (see Figure 2). The direction from the center of the fuselage 2 in the width direction toward the right or left will be referred to as the fuselage width outward direction. In other words, the fuselage width outward direction is the direction away from the center of the fuselage 2 in the width direction K2. The direction opposite to the fuselage width outward direction will be referred to as the fuselage width inward direction. In other words, the fuselage width inward direction is the direction approaching the center of the fuselage 2 in the width direction K2.

[0016] 1, in this embodiment, the traveling device 3 is a crawler type traveling device having a traveling frame 8 and crawler type traveling mechanisms 9 provided on the left and right of the traveling frame 8. A dozer device 7 is attached to the front of the traveling device 3.

[0017] The machine body 2 is mounted on a traveling frame 8 so as to be able to rotate freely to the left and right. More specifically, as shown in FIG. 1, the machine body 2 has a swivel base plate 15, which is a base plate that forms the bottom of the machine body 2. The swivel base plate 15 is formed from a thick plate material and is arranged so that the plate surface faces up and down. The swivel base plate 15 is supported on the traveling frame 8 via a swivel bearing 16 so as to be able to rotate freely around an axis that extends up and down.

[0018] As shown in Figure 1, a support bracket 17 is provided at the front of the machine body 2 so as to protrude forward. The support bracket 17 is fixed to the swivel base plate 15. A swing bracket 11 is supported on the support bracket 17 so as to be rotatable about an axis extending in the vertical direction. A working device 4 is attached to this swing bracket 11.

[0019] As shown in FIG. 1 , the working device 4 has a boom 26, a boom cylinder 27, an arm 28, an arm cylinder 29, a working implement (bucket) 30, and a working implement cylinder (bucket cylinder) 31. The boom 26 has a base rotatably connected to a swing bracket 11 so as to be able to swing up and down. The boom cylinder 27 swings the boom 26 by extending and retracting. The arm 28 is rotatably connected to the tip of the boom 26 so as to be able to swing in the forward and backward direction K1. The arm cylinder 29 swings and retracts to drive the arm 28. The working implement 30 is rotatably connected to the tip of the arm 28 so as to be able to swing in the forward and backward direction K1. The working implement cylinder 31 swings and retracts to drive the working implement 30. In this embodiment, a bucket is exemplified as the working implement 30.

[0020] As shown in FIG. 2, the cabin 5 has a pair of left and right front pillars 46 spaced apart on the front side in the vehicle width direction K2. The cabin 5 has a left side frame 48L extending rearward from an upper portion of the left front pillar 46L, and a right side frame 48R extending rearward from an upper portion of the right front pillar 46R. The cabin 5 also has a center pillar 21 in the middle of its left side in the fore-and-aft direction K1. The cabin 5 also has a rear pillar 50 provided behind the center pillar 21. A rear pillar is also provided on the right side of the rear of the cabin 5.

[0021] As shown in FIG. 2 , the cabin 5 has a windshield 22 at the front, a boarding door 23 at the front of the left side, a side window 24 at the rear of the left side, and a roof 25 on the upper surface. The windshield 22 is provided between the left and right front pillars 46. The boarding door 23 is provided between the left front pillar 46L and the center pillar 21. The rear edge of the boarding door 23 is attached to the center pillar 21 via a pair of upper and lower hinges 18, and rotates about the hinges 18 to open and close. The side window 24 is provided between the center pillar 21 and the rear pillar 50. The roof 25 is provided between the left and right side frames 48L, 48R.

[0022] 3A, the front window 22 has a window frame 33 that forms a window opening 32, and a front panel 34 that covers the window opening 32. The window frame 33 has a main frame 39 and a lower frame 40.

[0023] The main frame 39 forms the left edge 32a, right edge 32b, and upper edge 32c of the window opening 32. More specifically, the main frame 39 has a first vertical frame portion 36 that forms the left edge 32a of the window opening 32, a second vertical frame portion 37 that forms the right edge 32b of the window opening 32, and an upper frame portion 38 that forms the upper edge 32c of the window opening 32.

[0024] The first vertical frame portion 36 has a first portion 36a extending downward from the left portion of the upper frame portion 38, a second portion 36b whose upper portion is connected to the first portion 36a and extends downward from the first portion 36a, and a third portion 36c whose upper portion is connected to the second portion 36b and extends downward from the second portion 36b. The upper portion of the first vertical frame portion 36 (the upper portions of the first portion 36a and the second portion 36b) is formed to gradually widen as it extends upward.

[0025] The second vertical frame portion 37 has a first portion 37a extending downward from the right portion of the upper frame portion 38, a second portion 37b whose upper portion is connected to the first portion 37a and extends downward from the first portion 37a, and a third portion 37c whose upper portion is connected to the second portion 37b and extends downward from the second portion 37b.

[0026] The first portion 36a of the first vertical frame portion 36 is formed to be wider than the first portion 35a of the second vertical frame portion 37.

[0027] The upper frame portion 38 is formed to extend from the front portion of the roof 25 .

[0028] The lower frame 40 forms the lower edge of the window opening 32. More specifically, the lower frame 40 has a first horizontal frame portion 40a extending rightward from the lower end side of the first vertical frame portion 36, a second horizontal frame portion 40b extending leftward from the lower end side of the second vertical frame portion 37, and a lower frame member 40c connecting the lower portions of the left front pillar 46L and the right front pillar 46R.

[0029] Trim seals 35 are fitted to the left edge 32a, right edge 32b, upper edge 32c, left part of the lower edge 32d, and right part of the lower edge 32d of the window opening 32.

[0030] In this embodiment, the front panel 34 is made up of multiple panels (a pair of upper and lower panels in this embodiment). The multiple panels that make up the front panel 34 include an upper panel 34A provided above the window opening 32 and a lower panel 34B provided below the window opening 32. A seal member 41 is provided between the upper panel 34A and the lower panel 34B. The front panel 34 may also be made up of a single panel.

[0031] The front panel 34 (upper panel 34A and lower panel 34B) is formed of a glass panel or a hard resin panel that is transparent (transparent to visible light) so that the operator can see ahead from inside the cabin 5.

[0032] The front panel 34 (in this embodiment, the upper panel 34A) can be opened and closed freely, for example, to allow air to enter the cabin 5 or to allow the operator to communicate with people outside the cabin 5.

[0033] The lower panel 34B is fitted and fixed to the lower part of the window frame 33. The seal member 41 is provided on the upper panel 34A side and moves together with the upper panel 34A.

[0034] In this embodiment, the front panel 34 is configured so that only a portion (upper panel 34A) can be opened and closed, but the entire front panel 34 may be configured so that it can be opened and closed. Furthermore, the configuration of the front window 22 is not limited to the above configuration, and various design changes are possible.

[0035] Here, the opening and closing structure of the front panel 34 (upper panel 34A) will be described. The cabin 5 comprises a mounting structure 42 shown in FIGS. 4 and 5, and a guide rail 43 and a swing rail 44 shown in FIG. 6. The opening and closing mechanism 51 includes the link 44 and the locking device 45 shown in FIG. 7, and is provided with the opening and closing mechanism 51 for opening and closing the front panel 34 (upper panel 34A).

[0036] 4 and 5, upper panel 34A is attached to mounting structure 42. Mounting structure 42 includes a mounting frame 53 having an opening 52. Upper panel 34A is attached to the front surface of mounting frame 53 so as to close opening 52. The outer shape of mounting frame 53 is formed to be substantially the same as the outer shape of upper panel 34A.

[0037] The mounting structure 42 has a pair of left and right vertical frame members 54 and a pair of upper and lower horizontal frame members 55. The left vertical frame member 54 is fixed to the left portion of the mounting frame 53 via an intervening member 56A. The right vertical frame member 54 is fixed to the right portion of the mounting frame 53 via an intervening member 56B. The upper horizontal frame member 55 is fixed to the top of the mounting frame 53 via an intervening member 56C. The lower horizontal frame member 55 is positioned between the lower ends of the left and right vertical frame members 54 and is attached to the left and right vertical frame members 54. A sealing member 41 is attached to the lower horizontal frame member 55.

[0038] A stay member 57 is fixed to the upper part of each of the left and right vertical frame members 54. A handle member 58 is fixed to each of the left and right stay members 57. In addition, each of the left and right stay members 57 has a support portion 57a.

[0039] A bracket member 59 is fixed to the lower part of each of the left and right vertical frame members 54. A roller 60 is supported on each of the left and right bracket members 59 so as to be rotatable around an axis extending in the width direction K2 of the machine body.

[0040] The guide rail 43 and swing link 44 are provided on the left and right sides of the front part of the interior of the cabin 5. The left guide rail 43 and left swing link 44 and the right guide rail 43 and right swing link 44 are configured symmetrically and similarly, so in the following explanation, the left guide rail 43 and left swing link 44 will be explained, and an explanation of the right guide rail 43 and right swing link 44 will be omitted.

[0041] As shown in Figures 6 and 8, the guide rail 43 guides the front panel 34 (upper panel 34A) so as to open and close freely. The left guide rail 43 is arranged to extend vertically inward of the left front pillar 46L in the vehicle width direction and generally along the front pillar 46L. The left guide rail 43 is also arranged rearward of the first portion 36a and the second portion 36b of the first vertical frame portion 36. The left guide rail 43 is also attached to an extension wall 61 that extends rearward from the left end of the second portion 36b of the first vertical frame portion 36. The extension wall 61 is fixed to the right side surface of the left front pillar 46L. The guide rail 43 extends vertically and is formed in a groove shape that is open inward in the vehicle width direction. A roller 60 is fitted in the guide rail 43. The roller 60 is movable along the longitudinal direction of the guide rail 43. In this embodiment, the guide rail 43 is disposed in an inclined manner that transitions forward as it extends downward from the upper end to the lower end. The lower end side of the guide rail 43 is inclined in a direction that transitions forward as it extends downward, and is inclined at an angle that is gentler than the inclination of the portion from the lower end side upward.

[0042] As shown in FIGS. 6 and 8 , the swing link 44 is disposed laterally on the inner side in the width direction of the vehicle body of the guide rail 43. When the front panel 34 (upper panel 34A) is opened or closed, the swing link 44 swings at its lower portion in the front-to-rear direction K1 to support the front panel 34 (upper panel 34A) in a position that can be freely changed. More specifically, the upper portion of the left swing link 44 is rotatably supported on the front portion of the inner surface of the left side frame 48L in the width direction of the vehicle body via a first support shaft 62 having an axis extending in the width direction K2 of the vehicle body. The lower portion of the left swing link 44 is rotatably connected to the support portion 57a ​​of the left stay member 57 via a second support shaft 63 having an axis extending in the width direction K2 of the vehicle body. The left swing link 44 and the right swing link 44 are interlocked and connected by a connecting bar 64.

[0043] The locking device 45 is a device that restricts movement of the mounting structure 42. As shown in Figure 7, the locking device 45 has a locking member 66 that engages with the striker 65, a release lever 68 that releases the engagement of the locking member 66 with the striker 65, a support bracket 69 to which the locking member 66 and other components are attached, and a cover member 70 that covers the support bracket 69, the locking member 66, and other components. The striker 65 is attached to a bracket 72 that is fixed to a reinforcing frame 71 (see Figure 13) that is fixed to the underside of the front of the roof 25. The support bracket 69 is fixed to the left stay member 57.

[0044] As shown in FIG. 9, when the upper panel 34A is in the closed position X1, closing the window opening 32, the roller 60 is located at the lower end of the guide rail 43. To open the upper panel 34A from the closed position X1, first, the locking member 66 is disengaged from the striker 65. Next, the left and right handle members 58 are grasped and the upper panel 34A (mounting structure 42) is tilted backward (see arrow Y1) while the upper panel 34A is lifted (see arrow Y2). At this time, the swing link 44 swings backward (see arrow Y3) to support the upper panel 34A (mounting structure 42). As shown in FIG. 10, when the roller 60 reaches the top of the guide rail 43, the upper panel 34A is in the retracted position X2, where the plate surface of the upper panel 34A faces upward.

[0045] In addition, another striker (not shown) is provided at the top and rear of the interior side of the cabin 5, and when the upper panel 34A is positioned in the retracted position X2, the locking member 66 can be engaged with the other striker to hold the upper panel 34A in the retracted position X2.

[0046] As shown in FIG. 8, the work machine 1 of this embodiment is equipped with a hands-free microphone 73 installed inside the cabin 5, allowing the operator to make and receive calls hands-free. More specifically, as shown in FIG. 11, the work machine 1 is equipped with a communication device 74. The communication device 74 is an in-vehicle device with a hands-free calling function. In this embodiment, it is a CAN (Controller Area Network) radio. The microphone 73 is connected to the communication device 74 by an electrical wiring 75. The microphone 73 converts the operator's voice and other signals into electrical signals. The communication device 74 can be connected to a mobile terminal 76, such as the operator's smartphone, by Bluetooth (registered trademark), for example, and can communicate with the mobile terminal 76 by wireless communication. The communication device 74 is also connected to a speaker 77 installed in the cabin 5 by an electrical wiring 78. The speaker 77 is installed in the upper rear portion of the interior of the cabin 5, behind the driver's seat 6.

[0047] As described above, the operator's voice can be picked up by the microphone 73 and transmitted to another mobile terminal 79 or the like via the communication device 74 and the operator's mobile terminal 76. Signals transmitted from another mobile terminal 79 or the like are received by the operator's mobile terminal 76 and can be output from the speaker 77 via the communication device 74. This allows the operator to talk hands-free. In addition, the communication device 74 is connected to an operating device 80 that is located near the driver's seat 6 inside the cabin 5. The operator can operate the communication device 74 using the operating device 80 while seated in the driver's seat 6.

[0048] As shown in Fig. 12, the microphone 73 is disposed at the upper part of the interior side of the window frame 33 and further inward in the width direction of the machine body than the front panel 34 (upper panel 34A). In other words, as shown in Figs. 13 and 14, the microphone 73 is disposed behind the first portion 36a of the first vertical frame portion 36 of the window frame 33 and further inward in the width direction of the machine body than the left front pillar 46L. This position does not interfere with the opening and closing of the front panel 34 and is a position where the microphone 73 can appropriately pick up the voice of the operator while minimizing pickup of vibrations of the work machine 1, etc.

[0049] The microphone 73 may be disposed behind the first portion 37a of the second vertical frame portion 37 of the window frame 33 and inward in the vehicle width direction of the right front pillar 46R.

[0050] As shown in Fig. 13, the microphone 73 is disposed within the width of the front pillar 46 in the front-rear direction K1 in a side view seen from the vehicle width direction K2. Also, as shown in Fig. 3B, the microphone 73 is disposed at a position higher than the upper end of the backrest 6B of the driver's seat 6. Furthermore, as shown in Fig. 3A, the microphone 73 is disposed at a position lower than the upper edge 32c of the window opening 32.

[0051] 8 and 13, the microphone 73 is disposed on the front side of the upper part of the guide rail 43. The microphone 73 is also disposed on the front side of the upper part of the swing link 44. The microphone 73 is also disposed to the side (left side) of the locking device 45, as shown in FIG.

[0052] The guide rail 43 is fixed, and the swing link 44 moves when the upper panel 34A is opened. Since the microphone 73 swings rearward when the upper panel 34A is opened, and the locking device 45 moves rearward when the upper panel 34A is opened, the microphone 73 does not interfere with the opening and closing of the upper panel 34A. Furthermore, by arranging the microphone 73 on the upper part of the guide rail 43 and on the front side of the upper part of the swing link 44, the space on the upper part of the guide rail 43 and on the front side of the upper part of the swing link 44 can be used effectively.

[0053] In the rear view seen from the rear as shown in FIG. 8, there are gaps between the guide rail 43 and the swing link 44 and between the swing link 44 and the locking device 45, and the operator's voice is transmitted to the microphone 73 from these gaps.

[0054] Furthermore, the swing link 44 swings backward when the upper panel 34A is opened, and the locking device 45 moves backward when the upper panel 34A is opened. Therefore, by placing the upper panel 34A in the retracted position X2, there are fewer obstacles around the microphone 73, making it easier to attach and remove the microphone 73.

[0055] As shown in FIGS. 13 to 15 , a microphone stay 81 for attaching a microphone 73 is attached inside the cabin 5. The microphone stay 81 is disposed inward in the fuselage width direction of the left front pillar 46L and rearward of the first portion 36a of the first vertical frame portion 36 of the window frame 33. The microphone stay 81 has a first wall portion 81a attached to the cabin 5 and a second wall portion 81b extending from the front end of the first wall portion 81a and disposed at a distance from the window frame 33. More specifically, the first wall portion 81a is fixed to the left front pillar 46L with a bolt 82. In this embodiment, the first wall portion 81a is attached to the front pillar 46L via an extension wall 61 extending from the second portion 36b of the first vertical frame portion 36.

[0056] The microphone stay 81 (first wall portion 81a) may be fixed to the front pillar 46L or the extending wall 61 by welding or by rivets.

[0057] As shown in Figures 16 and 17, microphone 73 has a case 83 that houses a diaphragm that receives sound waves and a converter that converts them into electrical energy. A recess 83a is formed on the front surface of case 83 for positioning adhesive tape (adhesive member) 84. Adhesive tape 84 is double-sided, and microphone 73 is attached to second wall portion 81b of microphone stay 81 by adhering one side of adhesive tape 84 to recess 83a and the other side to second wall portion 81b (see Figure 14). Microphone 73 is attached to the surface of second wall portion 81b opposite to window frame 33 (see Figure 15).

[0058] The case 83 is formed with a first sound collection section (sound collection section) 83b and a second sound collection section (sound collection section) 83c that collect the operator's voice and the like. The first sound collection section 83b and the second sound collection section 83c have a plurality of through holes 85 formed through the case 83 to allow sound to pass from the external space to the internal space of the case 83. The first sound collection section 83b is formed on the rear surface side of the case 83 (the side opposite to the recess 83a). The second sound collection section 83c is formed on the right surface side of the case 83. It is sufficient that at least one sound collection section is provided. A passage section 83d is formed on the left surface side of the case 83 to allow electrical wiring 75 (see FIG. 12) to pass through.

[0059] If the microphone 73 is attached to the microphone stay 81 only with adhesive tape 84, there is a concern that the microphone 73 may fall off from the microphone stay 81 due to deterioration of the adhesive strength of the adhesive tape 84. Therefore, in this embodiment, in order to reliably prevent the microphone 73 from falling off, a microphone holder 86 is provided that is attached to the microphone stay 81 and that holds the microphone 73 attached to the microphone stay 81.

[0060] The microphone holder 86 is formed of a flexible elastic material such as rubber. As shown in Figures 13 and 14, the microphone holder 86 is disposed on the surface of the second wall portion 81b opposite to the window frame 33 and attached to the second wall portion 81b.

[0061] As shown in FIGS. 18 and 19 , the microphone holder 86 has a holding portion 87 that holds the microphone 73 and an attachment portion 88 that extends from the holding portion 87 and is attached to the second wall portion 81b. The front side of the holding portion 87 has an open portion 87a that is open forward, and the holding portion 87 is positioned to cover the microphone 73 from behind when the microphone 73 is attached to the second wall portion 81b. The holding portion 87 has a first opening (opening) 87b formed at a position corresponding to the first sound collection portion 83b to expose the first sound collection portion 83b, and a second opening (opening) 87c formed at a position corresponding to the second sound collection portion 83c to expose the second sound collection portion 83c. Therefore, the holding portion 87 covers a portion of the surface of the microphone 73 opposite the surface attached to the microphone stay 81, and holds the microphone 73 between the holding portion 87 and the microphone stay 81. The number of openings is equal to the number of sound collection portions. In other words, at least one opening is provided. The left part of the holding part 87 is open toward the left to expose the passing part 83d of the case 83. The holding part 87 is fitted to the microphone 73 so that the inner surface thereof is in close contact with the outer surface of the microphone 73.

[0062] 15, a pair of mounting portions 88 are provided. One of the pair of mounting portions 88 extends upward from the holding portion 87, and the other of the pair of mounting portions 88 extends downward from the holding portion 87. The mounting portion 88 is attached to the second wall portion 81b by a push rivet 89 consisting of a push pin 89a and a push rivet body 89b.

[0063] The microphone 73 is adhered to the microphone holder 86 by adhesive tape 84, and the microphone holder 86 is formed of a flexible elastic material such as rubber, and is in close contact with the microphone 73 while being attached to the microphone holder 86, so that transmission of vibrations to the microphone 73 can be effectively suppressed.

[0064] In addition, the microphone stay 81 has a second wall portion 81b that extends from a first wall portion 81a attached to the front pillar 46L and is positioned at a distance from the window frame 33, and the microphone 73 and microphone holder 86 are attached to the second wall portion 81b, thereby preventing the microphone 73 from picking up vibrations from the work machine 1.

[0065] A preferred embodiment of the present invention provides a work machine 1 as described in the following items. (Item 1) The work machine 1 includes a driver's seat 6 in which an operator sits, a cabin 5 containing the driver's seat 6, a microphone stay 81 provided inside the cabin 5, a hands-free microphone 73 attached to the microphone stay 81 with an adhesive member 84, and a microphone holder 86 attached to the microphone stay 81, the microphone holder 86 holding the microphone 73 attached to the microphone stay 81.

[0066] According to the work machine 1 relating to this item 1, the microphone can be held appropriately even if the adhesive member is peeled off. (Item 2) The microphone holder 86 has a holding portion 87 that holds the microphone 73 and an attachment portion 88 that extends from the holding portion 87 and is attached to the microphone stay 81, and is formed from an elastic material.

[0067] According to the work machine 1 relating to this item 2, vibrations transmitted from the cabin 5 to the microphone 73 can be suppressed. (Item 3) The holding portion 87 covers at least a portion of the surface of the microphone 73 opposite to the surface attached to the microphone stay 81, and holds the microphone 73 between the holding portion 87 and the microphone stay 81.

[0068] According to the work machine 1 relating to this item 3, the microphone 73 can be held securely between the holding portion 87 and the microphone stay 81. (Item 4) Item 4. The work machine (1) according to item 3, wherein the holding portion (87) has openings (87b, 87c) at positions corresponding to the sound collecting portions (83b, 83c) of the microphone (73).

[0069] According to the work machine 1 relating to this item 4, the microphone 73 can be held without interfering with the collection of sound by the microphone 73. (Item 5) The cabin 5 has a front window 22 at the front, the front window 22 has a window frame 33 that forms a window opening 32, and a front panel 34 that covers the window opening 32 and has transparency that allows the front to be seen from inside the cabin, and the microphone 73 is arranged at an upper part of the window frame 22 on the inside of the cabin and outward in the fuselage width direction than the front panel 34. The work machine 1 described in

[0070] According to the work machine 1 relating to this item 5, by positioning the microphone 73 at the top of the interior side of the window frame 33 and further outward in the width direction of the machine body than the front panel 34, the microphone 73 can properly collect the operator's voice while minimizing pickup of vibrations from the work machine 1. (Item 6) The work machine (1) according to item 5, wherein the microphone (73) is disposed at a position higher than an upper end of the backrest (6B) of the driver's seat (6).

[0071] According to the work machine 1 relating to this item 6, the transmission of vibrations from the cabin 5 to the microphone 73 can be suppressed. (Item 7) Item 5 or 6. The work machine 1 is provided with an opening / closing mechanism 51 that opens and closes the front panel 34, the cabin 5 has a pair of left and right front pillars 46 on the front side, the window frame 22 is provided between the left and right front pillars 46, the opening / closing mechanism 51 has a guide rail 43 that is arranged on the inner side of the front pillars 46 in the width direction of the machine body so as to extend in the vertical direction along the front pillars 46 and guides the front panel 34 to be opened and closed freely, and the microphone 73 is arranged on the forward side of the guide rail 43.

[0072] According to the work machine 1 according to this item 7, the microphone 73 can be installed without interfering with the opening and closing of the front panel . (Item 8) The opening / closing mechanism 51 has a swing link 44 arranged on the side of the guide rail 43, the lower part of which swings in the forward / backward direction K1 when the front panel 34 is opened or closed, thereby supporting the front panel 34 so that its posture can be freely changed, and the microphone 73 is arranged on the front side of the swing link 44.

[0073] According to the work machine 1 according to item 8, the microphone 73 can be installed without interfering with the opening and closing of the front panel . (Item 9) The microphone stay 81 has a first wall portion 81a attached to the cabin 5 and a second wall portion 81b extending from the first wall portion 81a and positioned at a distance from the window frame 22, and the microphone 73 and the microphone holder 86 are attached to the second wall portion 81b.The work machine 1 described in any one of items 5 to 8.

[0074] According to the work machine 1 relating to this item 9, the transmission of vibrations from the cabin 5 to the microphone 73 can be suppressed. (Item 10) 10. The work machine (1) according to claim 9, wherein the microphone (73) and the microphone holder (86) are attached to a surface of the second wall portion (81b) opposite to the window frame (33).

[0075] According to the work machine 1 relating to this item 10, the voice of the operator can be appropriately collected by the microphone 73, and the microphone 73 and microphone holder 86 can be arranged compactly.

[0076] 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. [Explanation of symbols]

[0077] 1 Work equipment 5 Cabins 6 Driver's seat 6B Backrest 22 Front window 32 Window opening 33 Window Frame 34 Front Panel 43 Guide rail 44 Swing link 46 Front pillar 51 Opening and closing mechanism 73 Mike 81 Microphone Stay 81a First wall 81b Second wall 84 Adhesive material (adhesive tape) 86 Microphone holder 87 Holding part 88 Mounting part 83b Sound collection section (1st sound collection section) 83c Sound collection unit (second sound collection unit) 87b opening (first opening) 87c opening (second opening)

Claims

1. A driver's seat where an operator sits; a cabin containing the driver's seat; A microphone stay provided inside the cabin; a hands-free microphone attached to the microphone stay with an adhesive member; a microphone holder attached to the microphone stay, the microphone holder holding the microphone attached to the microphone stay; A work machine equipped with the above.

2. 2. The work machine according to claim 1, wherein the microphone holder has a holding portion that holds the microphone and an attachment portion that extends from the holding portion and is attached to the microphone stay, and is formed of an elastic material.

3. The work machine according to claim 2 , wherein the holding portion covers at least a portion of a surface of the microphone opposite to a surface attached to the microphone stay, and holds the microphone between the holding portion and the microphone stay.

4. The work machine according to claim 3 , wherein the holding portion has an opening at a position corresponding to a sound collecting portion of the microphone.

5. The cabin has a front window on the front side, The front window has a window frame that forms a window opening, and a front panel that covers the window opening and has transparency that allows a front view to be seen from inside the vehicle, The work machine according to claim 1 , wherein the microphone is disposed above the window frame on the interior side and further outward in the width direction of the machine body than the front panel.

6. 6. The work machine according to claim 5, wherein the microphone is disposed at a position higher than an upper end of a backrest of the driver's seat.

7. an opening / closing mechanism for opening and closing the front panel; The cabin has a pair of left and right front pillars on the front side, the window frame is provided between the left and right front pillars, the opening / closing mechanism has a guide rail that is arranged on an inner side of the front pillar in the vehicle width direction so as to extend in a vertical direction along the front pillar and guides the front panel so as to be able to open and close freely; The work machine according to claim 5, wherein the microphone is disposed on the front side of the guide rail.

8. the opening / closing mechanism has a swing link that is disposed on a side of the guide rail and that swings a lower portion thereof in a front-rear direction when the front panel is opened or closed, thereby supporting the front panel so as to be able to freely change its position; 8. The work machine according to claim 7, wherein the microphone is disposed on the front side of the swing link.

9. the microphone stay has a first wall portion attached to the cabin and a second wall portion extending from the first wall portion and disposed at a distance from the window frame, The work machine according to claim 5 , wherein the microphone and the microphone holder are attached to the second wall portion.

10. The work machine according to claim 9 , wherein the microphone and the microphone holder are attached to a surface of the second wall portion opposite to the window frame.

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