JP2006205764A - Cabin device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily fix an instrument panel to a blowout duct by a simple structure. <P>SOLUTION: In this cabin device, a steering wheel is provided to be located in front of a driver's seat on a front part side of a cabin chamber, and the blowout duct for blowing air-conditioned air delivered from an air conditioner body is provided. A blowout port is provided in the blowout duct, and an instrument panel is provided to cover the blowout duct from the outside. In the instrument panel, an opening for blowout corresponding to the blowout port is provided. A cylindrical blowout cylinder is inserted into the blowout port of the blowout duct and the opening for blowout of the instrument panel to communicate the inside of the blowout duct with the outside. The instrument panel is fastened to the blowout duct via the blowout cylinder. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cabin device mounted on a vehicle such as a tractor.

2. Description of the Related Art Conventionally, a cabin device mounted on a tractor is provided with an air conditioner that adjusts air in the cabin, and a steering handle is provided on the front side of the cabin so as to be positioned in front of the driver's seat. Some of them have a blowout duct for blowing out conditioned air sent from the air conditioner main body (for example, Patent Document 1 and Patent Document 2).
Japanese Patent No. 3107836 JP 57-26007 A JP-A-11-91636

In this type of conventional cabin device, the air outlet is provided with an air outlet, and the cylindrical air outlet cylinder is inserted into the air outlet of the air outlet duct so as to communicate with the inside and outside of the air outlet duct. An instrument panel is provided so as to cover from the outside, but usually, the instrument panel is fixed by providing a special fixing member for fixing to the blowout duct. There was a problem that it was complicated and the fixing of the instrument panel was troublesome.
Therefore, in view of the above-described problems, the present invention enables the instrument panel to be easily fixed to the blowout duct with a simple structure.

The technical means of the present invention for solving this technical problem is that the steering handle is provided in front of the driver's seat on the front side of the cabin, and the conditioned air sent from the air conditioner body is In a cabin device provided with a blowout duct for blowing out,
The blowout duct is provided with a blowout outlet, an instrument panel is provided so as to cover the blowout duct from the outside, a blowout opening corresponding to the blowout opening is provided in the instrument panel, and the cylindrical blowout cylinder is blown out. In order to communicate between the inside and the outside of the duct, it is inserted into the outlet of the outlet duct and the outlet opening of the instrument panel, and the instrument panel is stopped by the outlet duct via the outlet cylinder.

According to another technical means of the present invention, a flange is provided at an outer end of the blowing cylinder, and an instrument panel is provided between the flange of the blowing cylinder and the opening edge of the outlet of the blowing duct. The opening edge of the blowout opening is sandwiched.
In addition, another technical means of the present invention includes an upper air outlet that blows conditioned air upward, a lower air outlet that blows conditioned air downward, and a side air outlet that blows conditioned air laterally. And an exit.
Another technical means of the present invention is that a blow-off grill is detachably attached to the blow-out cylinder inserted through the blow-out port of the blow-out duct, and the blow-off grill is removed from the blow-off cylinder, thereby It exists in the point which can hold | maintain to-be-cooled bodies, such as can juice and a PET bottle, in upward protruding shape.

  According to the present invention, since the instrument panel is fixed to the blowout duct via the blowout cylinder, the blowout cylinder can be used also as a stop member, and the instrument panel can be used for stopping the instrument panel on the blowout duct. Therefore, the instrument panel can be easily fixed to the outlet duct with a simple structure.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a tractor (vehicle), which has a vehicle body 1 formed by connecting an engine 2 and a transmission case 3 including a flywheel housing, a clutch housing, a transmission case, and the like. The front part is supported by a pair of left and right front wheels 6, the rear part is supported by a pair of left and right rear wheels 7, and a cabin 9 is mounted on the rear part of the vehicle body 1.
The engine 2, the radiator 4, the battery 10, etc. are arranged at the front part of the tractor and are covered with a bonnet 5.

This tractor is equipped with an air conditioner (air conditioner) that adjusts the air in the cabin 9, and this air conditioner includes a cooling device and a heating device.
The cooling device is, for example, a compressor that compresses the refrigerant, a condenser (heat radiator) that condenses and liquefies the refrigerant compressed by the compressor, and a state in which the refrigerant liquefied by the condenser is decompressed and easily vaporized. And an evaporator (evaporator) that evaporates the refrigerant and removes heat from the surroundings to bring the surroundings into a low-temperature state.
As the heating device, for example, a structure in which the heating medium heated by the heat of the engine 2 is sent to the heater and the heating medium is circulated so as to return from the heater to the engine 2 side is employed.

The air conditioner main body 60 of this air conditioner has an evaporator, a heater, a blower (blower) and the like housed in a casing and is disposed in the cabin 9, and a compressor, a radiator, an expansion valve, etc. are disposed in the hood 5. Are arranged.
In addition, the air conditioner main body 60 should just be provided with the evaporator and air blower of a cooling device at the minimum.
1 to 4, the cabin 9 has a cabin frame 11 as a skeleton. The cabin frame 11 includes a pair of left and right front pillars 12 disposed at the front and a pair of left and right rear pillars disposed at the rear. 13, the upper ends of the left and right rear pillars 13 are set to the same height as the left and right front pillars 12, and the lower ends of the left and right rear pillars 13 are located at positions corresponding to the middle portions of the left and right front pillars 12 in the vertical direction. Further, the left and right rear pillars 13 are located in front of the upper rear surface of the cabin 9.

Further, the front pillar 12 and the rear pillar 13 have a hollow structure in which upper and lower ends are opened, and the rear pillar 13 is formed by overlapping a pair of constituent members in the left and right direction formed by sheet metal. It is formed thicker than 12.
The left and right front pillars 12 are curved so as to move outward in the left-right direction from the upper and lower ends toward the center in the vertical direction, and are formed in a curved shape that protrudes outward in the left-right direction.
Each of the left and right front pillars 12 is curved to be inclined rearward so that the upper side from the center in the up-down direction gradually goes rearward as it goes to the upper end.

Each of the left and right rear pillars 13 is formed in a curved shape corresponding to the upper half of the front pillar 12 so as to go outward in the left-right direction from the upper end to the lower end.
The upper ends of the left and right front pillars 12 are connected by a front roof beam 15, the upper ends of the left and right rear pillars 13 are connected by a rear roof beam 16, and the lower ends of the left and right rear pillars 13 are connected by a rear middle beam 21. The upper ends of the front pillar 12 and the rear pillar 13 that are on the same side in the direction are connected to each other by a side roof beam 17.

The front roof beam 15 is curved so as to move upward as it goes from the left and right ends to the center in the left-right direction, and is formed in a curved shape (arc shape) that protrudes upward. For example, when the front loader bucket attached to the front part is raised, the front diagonally upward visibility is improved, and the loader operation is easy.
Further, since the front pillar 12 is curved so as to be inclined rearward so that the upper side gradually goes to the upper end, the front roof beam 15 is located rearward as compared with the conventional structure. Is configured to have good visibility.

The rear roof beam 16 and the rear middle beam 21 are formed in a U-shape in plan view in which a middle portion is formed in the left-right direction and both left and right sides are extended forward, and the left-right direction portion is It is formed in a curved shape so as to move backward as it goes from the left and right ends to the center in the left-right direction, and convex backward.
The side roof beam 17 is curved so as to move outward in the left-right direction as it goes from the front and rear ends toward the center in the front-rear direction, and is curved so as to protrude outward in the left-right direction.

A pair of left and right upper and lower pillars 25 located on the inner side in the left-right direction with respect to the side surface of the cabin 9 are arranged on the upper rear surface of the cabin 9 (between the rear roof beam 16 and the rear middle beam 21). The rear pillar 25 is arranged in an inclined shape that moves backward as it goes downward. The upper rear pillar 25 has an upper end connected to the rear roof beam 16 and a lower end connected to the rear middle beam 21.
In addition, a pair of left and right lower back pillars 27 positioned on the inner side in the left and right direction with respect to the side surface of the cabin 9 are disposed on the lower side rear face of the cabin 9, and the lower back pillar 27 moves forward as it goes downward. The lower rear pillar 27 is arranged in an inclined manner, and the upper end side of the lower back pillar 27 is connected to the rear middle beam 21, and the lower end is substantially at the same height as the lower end of the front pillar 12.

A front panel 23 that partitions the cabin 9 from the outside (becomes a partition wall that separates the cabin 9 from the engine 2 side) is disposed at the center in the left-right direction at the lower front side of the cabin frame 11. A front floor beam 24 is disposed between the lower end side of the left and right side portions of the panel 23 and the lower end side of the left and right front pillars 12, and the inner side of the front floor beam 24 in the left and right direction is a side portion of the front panel 23. The left and right direction outer end side is connected to the lower end side and is connected to the lower end side of the front pillar 12.
The left and right side upper portions of the front panel 23 and the left and right front pillars 12 are connected to each other by a connecting frame 18.

A pair of left and right side floor beams 28 arranged in the front-rear direction are arranged on the bottom side of the cabin 9, and the left and right side floor beams 28 are located on the inner side in the left-right direction with respect to the side surface of the cabin 9. The front end side of each side floor beam 28 is connected to the middle part of the front floor beam 24 on the same side in the left-right direction, and the rear end side of the side floor beam 28 is on the same side in the left-right direction. The lower back pillar 27 is connected to the lower end side.
The front end side of each of the left and right side floor beams 28 is attached and supported to a bracket 48 provided on the front side of the transmission case 3 via a mount rubber (anti-vibration rubber) 47, and below the left and right lower back pillars 27. The fixed bracket 51 is mounted and supported via a mount rubber 49 on a support base 50 that is mounted and fixed to a rear axle case that supports the rear axle, whereby the cabin 9 is supported by the tractor vehicle body 1.

Further, the cabin frame 11 includes a side frame 22 extending from the lower end side of each of the left and right rear pillars 13 toward the front lower side to the bottom of the cabin 9. The side frame 22 faces the front upper side substantially along the rear wheel 7. The rear end side (upper end side) is connected to the lower end side of the rear pillar 13 and the front end side (lower end side) is connected to the lower end side of the front pillar 12 via a connecting member 22b and the like. The
The side frame 22 is formed in a curved shape that moves outward in the left-right direction as it goes from the front-rear end to the center in the front-rear direction, and is formed in a curved shape that protrudes outward in the left-right direction in plan view. Yes.

  A roof 39 is provided on the upper part of the cabin frame 11, and a windshield 34 is provided between the left and right front pillars 12 (as shown in FIGS. 11 to 13), and the front pillars 12 on the same side in the left-right direction. Between the front pillar 12 and the rear pillar 13, a door is provided between the front pillar 12 and the rear pillar 13, and a rear side is provided between the rear pillar 13 and the upper back pillar 25 on the same side in the left-right direction. Glass is provided, rear glass is provided between the left and right upper and rear pillars 25, a floor sheet 31 is provided at the bottom and lower back of the cabin frame 11, and a side panel 32 is provided at the rear rear lower portion of the cabin frame 11. Is provided.

  The upper roof side of the pair of left and right front pillars 12 is curved in a rearward inclined shape so as to gradually move backward as it goes to the upper end, and connects the upper end portions of the pair of left and right front pillars 12. However, as shown in FIG. 13, the upper end portion of the windshield 34 is bent at the front roof beam 15 of the cabin frame 11 so as to go upward from the both ends in the left-right direction. The front glass 34 is disposed in front of the front roof beam 15 of the cabin frame 11 such that the upper end of the windshield 34 protrudes forward and bends downward. Therefore, compared with the conventional cabin, the center part in the left-right direction of the front roof beam 15 can be positioned on the upper side and the rear side together with the center part in the left-right direction of the front end portion of the roof 39, so that it sits in the driver's seat 44. The operator can view the upper part of the front side through the upper end of the windshield 34 as much as possible, and can greatly widen the field of view of the front and upper side of the operator, thereby facilitating loader work and the like.

3 is provided on the outer roof of the roof 39, and the outside air (outside air) outside the cabin 9 is taken into the hollow portion in the roof 39 through the filter from the outside air inlet 54 through the filter. .
Further, the upper end opening of the left rear pillar 13 is communicated with the inside of the roof 39, and the outside air taken into the roof 39 from the outside air intake 53 is guided downward through the rear pillar 13. The rear pillar 13 is used as a duct.
A rear wheel fender is provided on the outer surface side of the side panel 32 in the left-right direction.

The floor sheet 31 includes a bottom wall portion 31a that constitutes the bottom portion of the cabin 9, and a back wall 31b that extends in an inclined direction that moves upward from the rear end edge of the bottom wall portion 31a toward the rear.
The bottom wall portion 31a of the floor seat 31 is formed so that its front-rear direction extends from the lower ends of the front pillar 12 and the front panel 23 to the lower end of the lower back pillar 27 (the rear end of the side floor beam 28). Is formed so that the rear side extends between the left and right side floor beams 28 (side panels 32), and the front side extends from the left and right side floor beams 28 outward in the left-right direction to reach the lower end of the entrance. ing.

The back wall 31b of the floor seat 31 is formed to have a width extending between the left and right lower back pillars 27 and extends obliquely upward along the lower back pillar 27 from the rear end of the side floor beam 28. It is formed to reach the middle beam 21.
A cabin chamber 43 is formed by the windshield 34, the roof, the door, the rear side glass, the rear glass, the floor sheet 31, the side panel 32, the front panel (the front wall of the cabin 9) 3, and the like.
At the rear of the cabin 9 interior, there is an upper wall 57a that is vertically spaced from the floor seat 31, and a front wall 57b that extends downward from the front edge of the upper wall portion 57a to the floor seat 31. Is provided.

The left and right side edges of the seat base 57 are fixed to the side panel 32 by welding or the like, the rear edge of the upper wall portion 57a is fixed to the back wall 31b of the floor seat 31 by welding or the like, and the lower edge of the front wall portion is welded. It is fixed to the floor sheet 31 by, for example.
In the present embodiment, the floor seat 31, the left and right side panels 32, and the seat base 57 form an air conditioner body housing chamber 59 for housing the air conditioner body 60 of the air conditioner.
Further, a driver's seat 44 is supported on the upper surface side of the upper wall portion 57a of the seat base 57 via a cushion device, a front / rear position adjusting device, and the like, and an air conditioner main body chamber 59 is provided below the driver's seat 44. It has been.

A steering handle 45 is provided on the front side of the cabin 43 so as to be positioned in front of the driver's seat 44. The steering handle 45 is supported by a handle post 88 fixed to the front panel 23. In addition, a clutch pedal 36 and a pair of left and right brake pedals 37 are supported.
A wall portion constituting the air conditioner main body accommodation chamber 59, in the present embodiment, on the rear side on the left side of the upper wall portion 57 a of the seat base 57 (the rear left side of the driver's seat 44), is provided inside the cabin 9 through the filter 63. An inside air intake portion 61 is provided for taking in air (inside air) into the air conditioner main body accommodation chamber 59.

The inside air intake portion 61 is configured so that a filter 63 covers the inside of the inside air intake port 62 formed through the left rear portion of the upper wall portion 57a of the seat base 57.
In addition, an inner air introduction port for introducing air in the air conditioner main body accommodation chamber 59 into the air conditioner main body 60 is provided on the rear left side (right and left sides) of the air conditioner main body 60. The inside air taken into the air conditioner body accommodation chamber 59 through the filter 63 is configured to be sucked into the air conditioner body 60 from the inside air inlet.
Therefore, the entire air conditioner main body accommodating chamber 59 is a duct that guides the inside air that has passed through the filter 63 to the air conditioner main body 60, and the inside air intake portion 61 that includes the filter 63 is a wall that constitutes the air conditioner main body accommodating chamber 59. It is configured so that it may be provided at any position in the cabin facing the cabin 9 (the degree of freedom in designing the arrangement position of the inside air intake portion 61 is great).

Further, since the entire air conditioner main body accommodating chamber 59 is a duct, there is no need for a space for connecting the duct or a space for arranging a filter on the rear side of the inside air inlet formed on the back surface of the air conditioner main body 60. It can be brought close to the back side of the cabin 9, whereby a space on the front side of the bottom wall portion 31 a of the floor seat 31 (step, operator footrest space) can be widened.
On the inner surface side (inside the cabin 9) of the left side panel 32, there is provided an outside air circulation duct 68 whose upper end side is connected to the lower end side (inner side surface) of the left rear pillar 13 (connected to the left rear pillar 13). It has been.

The lower end side of the outside air circulation duct 68 is inserted into the air conditioner main body accommodation chamber 59 through the wall portion constituting the air conditioner main body 60, in this embodiment, the left side portion of the upper wall portion 57a of the seat base 57. The outside air that is connected to the connection port on the left side on the upper surface side of the air conditioner main body 60 from above and that is taken in through the filter from the outside air intake portion 53 of the roof 39 by the blower of the air conditioner main body 60 flows through the left rear pillar 13 and the outside air flow. It is configured to be sucked into the air conditioner main body 60 through the duct 68.
As shown in FIGS. 1 to 3, the outside air circulation duct 68 protrudes rearward from the air conditioner main body 60, then protrudes upward at the rear end portion on the left side in the cabin 9, and is further curved forward. It is connected to the lower end side of the left rear pillar 13. As a result, the protrusion of the interior material in the midway part in the front-rear direction in the cabin 9 is reduced as much as possible, and a large living space in the cabin 9 can be secured.

The outside air introduction duct 68 is preferably formed as flat as possible in the left-right direction so as not to disturb the living space of the cabin 9.
In addition, an outside air introduction port is provided in the vicinity of the inside air introduction port in the air conditioner body 60, and the air conditioner body 60 can be switched between an outside air introduction state and an inside air introduction state by a switching damper.
Further, on the right side on the front side of the air conditioner body 60, a delivery port 67 for sending conditioned air from the air conditioner body 60 is provided, and a delivery side duct for guiding the conditioned air sent from the air conditioner body 60 is provided in the delivery port 67. 73 is connected, and the delivery duct 73 is connected via a blower duct (relay duct) 77 to a blowout duct 76 that blows out conditioned air in the vicinity of the steering handle 45.

The delivery port 67 faces an inclined direction that moves to the left as it goes forward, and the rear end side of the delivery side duct 73 is inserted into the air conditioner body 60 in the front wall 57b of the seat base 57. An opening for connecting to the delivery port 67 is formed, and this opening is closed in a sealed manner by a lid.
The delivery-side duct 73 extends forward along the bottom wall portion 31a of the floor sheet 31 (the bottom portion of the cabin 9), and its rear portion is formed in an inclined shape that moves to the left as it goes forward. The front portion is located on the center side in the left-right direction and is formed in a direction along the front-rear direction.

As shown in FIG. 5, the front part of the delivery-side duct 73 is formed in an inclined shape that moves upward as it goes forward along the front-end-side left-right central part shape of the bottom wall part 31a of the floor sheet 31. The front end of the side duct 73 is connected to the lower end of the blower duct 77 via a duct connecting member 79.
Further, a concave portion 91 formed by denting the floor sheet 31 downward from above is formed on the center side in the left-right direction of the front portion of the bottom wall portion 31a of the floor sheet 31. It is bent so as to protrude downward so as to be accommodated in the recess 91, and the upper surface of the delivery-side duct 73 accommodated in the recess 91 is substantially flush with the upper surface (step upper surface) of the floor sheet 31. It is configured.

The recess 91 may be formed so that the delivery-side duct 73 is completely immersed in the recess 91. A floor mat made of rubber or the like is laid on the front of the bottom wall portion 31a of the floor sheet 31.
As shown in FIGS. 5 and 8, the blowout duct 76 is connected to the blowout base 93 through which the conditioned air is sent through the blower duct 77 and is connected to the blowout base 93 to air-condition the air in the cabin. Accordingly, a main duct portion 94 that blows out into the cabin 9 and a defroster duct portion 95 that is connected to the blowout base portion 93 and blows conditioned air to the windshield 34 are provided. The lower end of the blowout base 93 is connected to the lower end of the blower duct 77 through a duct connecting member 80. The main duct portion 94 communicates with the blowout base portion 93 through the main connection hole 96, and the defroster duct portion 95 communicates with the blowout base portion 93 through the differential communication hole 97.

  An air distribution mechanism 99 that distributes conditioned air to the main duct portion 94 and the defroster duct portion 95 is provided in the blowout base portion 93. The air distribution mechanism 99 includes a lid body 101 that can selectively close the main communication hole 96 and the differential communication hole 97, and the lid body 101 is supported so as to be swingable around the horizontal axis 102, thereby The lid body 101 is movable between a first closing position for closing the main communication hole 96 and a second closing position for closing the differential communication hole 97. The lid body 101 is configured to be able to stop at an arbitrary swinging position between the first closed position and the second closed position. Therefore, the lid body 101 is supported so as to be swingable between the first closed position and the second closed position, and the conditioned air flowing from the blowout base 93 to the main duct portion 94 by the swing adjustment of the lid body 101 is supported. The ratio of the conditioned air flowing from the blowing base 93 to the main duct portion 94 can be changed.

As shown in FIGS. 4, 5, and 8, the main duct portion 94 of the blowout duct 76 protrudes rearward while straddling the handle post 88 of the steering handle 45 from side to side, and is directed upward of the cabin 9. An upper outlet 104 for blowing conditioned air to the rear upper side (upper side) and a lower outlet 105 for blowing conditioned air to the lower rear side (lower side) are provided. Further, a side air outlet 106 for blowing out conditioned air to the side is provided on the outer side of the main duct portion 94.
The blowout base 93 is located slightly below the vertical center of the windshield 34 and at a position corresponding to the horizontal center, and the defroster duct 95 includes a pair of left and right side portions 95a and upper ends of the left and right side portions 95a. It is formed in a gate shape along the outer shape of the front panel 23 from the upper portion 95b connecting the comrades, and is fixedly attached to the front panel 23, and the lower end sides of the pair of left and right side portions 95a are closed. .

The left and right side portions 95a of the defroster duct portion 95 are provided with outlets 108 that are directed outward in the left-right direction, and the upper portions 95b are provided with outlets 109 that are directed upward. The conditioned air is blown out from the blowout ports 108 and 109 to the inner surface side of the windshield 34.
As shown in FIG. 5, an instrument panel 111 is provided so as to cover the blowout duct 76 (mainly the main duct part) from the outside, and an instrument part 110 and a wiper motor 112 are provided above the instrument panel 111. . As shown in FIG. 9, the instrument panel 111 is provided with blowout openings 113 corresponding to the blowout openings 104, 105, and 106, respectively, and the tubular blowout cylinder 114 communicates the inside and outside of the blowout duct 76. As shown, the air outlets 104, 105, and 106 of the air outlet duct 76 and the air outlet 113 of the instrument panel 111 are inserted. A flange 115 is provided at the outer end of the blowout cylinder 114, and the blowout of the instrument panel 111 is performed between the flange 115 of the blowout cylinder 114 and the opening edges of the blowout ports 104, 105, 106 of the blowout duct 76. The opening edge part of the opening 113 for use is clamped, and the instrument panel 111 is stopped by the blowing duct 76 via the blowing cylinder 114 by this. Therefore, the blowing cylinder 114 can also be used as a stopping member, and a special member for stopping the instrument panel 111 to the blowing duct 76 is not required, so that the instrument panel 111 can be formed into the blowing duct 76 with a simple structure. It can be fixed easily.

As shown in FIGS. 4 and 9, a blow grill 116 is detachably mounted in a blow cylinder 114 inserted into the upper blow outlet 104 of the blow duct 76, and the blow grill 116 is removed from the blow cylinder 114. 9 and 10, a to-be-cooled body 117 such as a can juice or a plastic bottle can be held in an upward projecting manner in the blowing cylinder 114 as indicated by a chain line. The blow-out grill 116 has a fitting body 118 fitted and held in the blow-out cylindrical body 114 and a blade body 119 for changing the blowing direction of the conditioned air.
In addition, the blowing grille 114 of the lower blower outlet 105 and the side blower outlet 106 is mounted with the blowout grille similarly to the blowout cylinder 114 of the upper blower outlet 104. Further, the defroster duct portion 95 also serves as an attachment member for the instrument panel 111, and is configured such that the attachment member for the instrument panel 111 can be omitted.

As shown in FIGS. 2 to 8, the air duct 77 is provided inside the cabin chamber 43 and on the rear surface side of the front panel 23 of the cabin 9, and the air duct 77 extends vertically along the front panel 23 of the cabin 9. Arranged in the direction. The upper end portion of the blower duct 77 is connected to the blowout base portion 93 of the blowout duct 76, and the lower end portion of the blower duct 77 is connected to the front end portion of the discharge-side duct 73. 73 is in communication.
The front panel 23 is configured by a flat plate, and a central portion in the left-right direction of the front panel 23 is press-molded so as to project in a circular arc shape toward the front to form a duct forming portion 121. The air duct 77 is formed of a duct forming part 121 of the front panel 23 and a duct component 122 that covers the duct forming part 121 from the inside of the cabin chamber 43. Therefore, the rigidity of the front panel 23 can be increased by attaching the duct constituent member 122 to the duct forming portion 121 of the front panel 23 by welding or the like.

  A handle shaft 124 of the steering handle 45 is supported on the handle post 88 so as to be rotatable about the axis. A power steering controller 125 is provided on the front side of the front panel 23 of the cabin 9, and a transmission shaft 126 that transmits the movement of the steering handle 45 to the power steering controller 125 is disposed so as to penetrate the air duct 77 forward and backward. In this case, the transmission shaft 126 penetrates the air duct 77 forward and backward, and at the same time, the front panel 23 penetrates forward and backward. A universal joint 127 is provided between the transmission shaft 126 and the handle shaft 124 of the steering handle 45, and the universal joint 127 is disposed behind the air duct 77. Reference numeral 130 denotes a protective cover.

As shown in FIG. 8, a support cylinder 129 is provided so as to penetrate the air duct 77 in the front-rear direction, and the transmission shaft 126 is rotatable around the axis via a bush 128 or the like in the support cylinder 129. Is inserted and held.
Accordingly, the transmission shaft 126 that transmits the movement of the steering handle 45 to the power steering controller 125 is arranged so as to penetrate the air duct 77 forward and backward, and therefore, the air duct 77 is avoided and penetrates the front panel 23 of the cabin 9. The air duct 77 that guides the conditioned air and the transmission shaft 126 that transmits the movement of the steering handle 45 to the power steering controller 125 are arranged on the front side of the cabin chamber 43 with a simple structure and are compact. Can be arranged. In addition, since the transmission shaft 126 is inserted into the support cylinder 129 and penetrates the air duct 77, oil leakage from the seal portion of the power steering controller 125 and the like can contaminate the cabin chamber 43 and the air duct 77. Can be prevented.

  Since the power steering controller 125, which is a heat and sound source, is disposed outside the cabin 9, it is possible to prevent the interior of the cabin chamber 43 from generating noise or being partially heated by the power steering controller 125. Since the air duct 77 is disposed in the cabin chamber 43 on the rear side of the front panel 23, the air duct 77 can be prevented from being adversely affected by engine heat. Maintenance of the air duct 77 is also facilitated. Further, since the transmission shaft 126 can be supported using the air duct 77 and a special support member is not required, the number of parts of the support structure such as the transmission shaft 126 can be reduced, and the support structure can be reduced. It will also be easy.

  As shown in FIG. 14, a differential lock pedal 133 is provided in front of the storage chamber forming plate 57 inside the rear wheel fender. The lower end side of the differential lock pedal 133 protrudes downward from the floor sheet 31 through the insertion hole 134, and a connecting plate 135 is fixed to the lower end portion of the differential lock pedal 133. A mounting plate 136 projects downward from the floor seat 31 in front of the differential lock pedal 133, and an upper link 137 and a lower link 138 are connected between the connecting plate 135 and the mounting plate 136 so as to be rotatable about the left and right axes, respectively. The parallel link mechanism 140 is configured by the connecting plate 135, the mounting plate 136, the upper link 137, and the lower link 138. An interlocking arm 142 protrudes downward from the front end portion of the lower link 138 via a boss portion 141, and the interlocking arm 142 is connected to a rear wheel differential device via an interlocking rod 144 and depresses the differential lock pedal 133. Thus, the left and right rear wheels 7 can be differentially locked. In this case, since the parallel link mechanism 140 is constituted by the connecting plate 135, the mounting plate 136, the upper link 137, and the lower link 138, compared to the case where the differential lock pedal 133 is supported so as to be swingable around the horizontal axis. When the diff lock pedal 133 is depressed, the diff lock pedal 133 swings up and down without largely swinging in the front-rear direction. The 31 insertion holes 134 can be small. Further, since the diff lock pedal 133 does not swing back and forth greatly, the diff lock pedal 133 can be stored compactly in front of the storage chamber forming plate 57 on the floor sheet 31.

  As shown in FIGS. 11 to 13, a sun visor 151 is provided on the lower surface side of the front end portion of the roof 39, and one end portion of the sun visor 151 can swing up and down on a support rod 152 fixed to the lower surface of the roof 39. It is supported. The sun visor 151 is curved so that the center side in the left-right direction protrudes rearward in a use state in which the sun visor 151 is rotated so as to protrude from the upper end portion of the windshield 34 as shown by a chain line in FIG. In the use state indicated by and the storage state indicated by the solid line, it best matches the lower surface (inner roof) of the roof 39, and effectively blocks the sunlight rays that enter from the upper end of the windshield when in use. Can be done.

  In the above-described embodiment, the universal joint 127 is provided between the transmission shaft 126 and the handle shaft 124. Instead, the universal joint 127 is omitted and the transmission shaft 126 is directly connected to the handle shaft 124. You may do it.

It is a side view of a tractor. It is a top view of a cabin. It is a front view of a cabin. It is a perspective view of a cabin. It is side surface sectional drawing of a cabin. It is the sectional view on the AA line of FIG. It is a rear view of the front panel and air duct part of a cabin. It is side surface sectional drawing of the handle mechanism part of a cabin. It is side surface sectional drawing of the blower outlet part of a cabin. It is a perspective view of the blowing duct part of a cabin. It is a perspective view of the front side in a cabin room. It is a B arrow line view of FIG. It is side surface sectional drawing of the front upper part of a cabin. It is side surface sectional drawing of a diff lock pedal part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 9 Cabin 23 Front panel 43 Cabin room 44 Driver's seat 45 Steering handle 60 Air-conditioner main body 76 Air outlet duct 77 Air duct 104 Upper air outlet 105 Lower air outlet 106 Side air outlet 111 Instrument panel 113 Air outlet opening 114 Air outlet cylinder 115 Flange 116 Outlet grill 117 Cooled body 124 Handle shaft 125 Power steering controller 126 Transmission shaft 127 Universal joint 129 Support cylinder

Claims (4)

A steering handle (45) is provided on the front side of the cabin (43) so as to be positioned in front of the driver's seat (44), and a blowout duct (76) for blowing out conditioned air sent from the air conditioner body (60). In the cabin apparatus provided with
The outlet duct (76) is provided with an outlet (104, 105, 106), an instrument panel (111) is provided so as to cover the outlet duct (76) from the outside, and the instrument panel (111) is provided with an outlet. A blowout opening (113) corresponding to (104, 105, 106) is provided, and the blowout duct (76) is arranged so that the tubular blowout cylinder (114) communicates with the inside and outside of the blowout duct (76). The blowout opening (104, 105, 106) and the blowout opening (113) of the instrument panel (111) are inserted into the blowout duct (76) through the blowout cylinder (114). Cabin device characterized by being stopped by.   A flange (115) is provided at the outer end of the blowout cylinder (114), and the openings (104, 105, 106) of the blowout duct (76) and the flange (115) of the blowout cylinder (114) are provided. The cabin apparatus according to claim 1, wherein an opening edge of the blowout opening (113) of the instrument panel (111) is sandwiched between the edge.   An upper air outlet (104) that blows air conditioned air upward, a lower air outlet (105) that blows air conditioned air downward, and a side air outlet (106) that blows air conditioned air to the side. The cabin apparatus according to claim 1, wherein the cabin apparatus is provided.   A blowout grill (116) is detachably mounted in the blowout cylinder (114) inserted through the blowout opening (104) of the blowout duct (76), and the blowout grill (116) is removed from the blowout cylinder (114). Accordingly, the body to be cooled (117) such as can juice or a plastic bottle can be held in an upward projecting manner in the blowing cylinder (114).

Images