JP2007022456A - Cabin device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the tractor working environment by reducing a sense of narrowness in all of longitudinal, vertical and cross directions of a living space and by making a state free to feel comfort and cure. <P>SOLUTION: This cabin device is installed with a front panel of a front surface, rear part pivotally supporting type door panels of left and right side parts, an upper part roof and a lower part floor seat on a cabin frame fixed on a tractor body, the front panel is formed in an outward bulged type roughly spherical surface shape, the door panel is formed in an outward bulged type roughly spherical surface shape, and the cabin living space surrounded by the front panel, the door panel, the roof and the floor seat is formed in a roughly oval shape as seen at a flat level. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

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

In this type of prior art, the cabin device is composed of a cabin frame fixed to the tractor body, a front front panel, left and right leg panels connected to the left and right lower portions of the front panel, and rear pivots on the left and right sides. A mold door panel and an upper roof are respectively mounted (see, for example, Patent Document 1).
The front panel has a horizontal upper edge, left and right side edges formed in an outward projecting arc shape in front view, and left and right lower parts integrally formed with the left and right leg panel. In some cases, the front panel and the left and right leg panels are separately formed and connected.

The door panel has an arcuate plate shape with the upper edge being horizontal, the upper and lower edges being formed in an outward projecting arc shape in front view.
Japanese Patent Laid-Open No. 11-91641

In the above prior art, a flat plate glass is used for the front panel, and the living space in the cabin apparatus is partitioned by a flat plate on the front surface, making it difficult to form a space where it can be relaxed and healed. ing.
In addition, the door panel is made of arc-shaped plate glass, and the living space in the cabin device bulges outward in the middle in the vertical direction, forming an enlarged space, but it is linear in the front-rear direction Therefore, it is difficult to form a space where the space between the front and rear edges can be felt and healed.

It is an object of the present invention to provide a cabin apparatus that can solve such problems of the prior art.
It is an object of the present invention to provide a cabin apparatus that can reduce the feeling of narrowness in all directions of the front and rear, up and down, and left and right of a living space, feel relaxed and healed, and improve the tractor working environment. .

Specific means for solving the problems in the present invention are as follows.
First, in a cabin device in which a front frame on the front, a rear pivot type door panel on the left and right sides, an upper roof, and a lower floor seat are mounted on a cabin frame fixed to the tractor body,
A cabin surrounded by the front panel, the door panel, the roof and the floor seat, wherein the front panel is formed in a substantially spherical shape having an outward bulge shape, and the door panel is formed in a substantially spherical shape having an outward bulge shape. It is that the living space is formed in a substantially egg shape in plan view.

As a result, the feeling of narrowness in all directions of the front, back, top and bottom, and left and right of the living space is reduced, and a relaxed and healed state can be felt, thereby improving the tractor working environment.
Second, the upper edge of the door panel is formed in an outwardly protruding arc shape in plan view.
This reduces the feeling of constriction from the side of the living space to the upper edge of the door panel, and allows the user to feel relaxed and healed, improving the tractor working environment.
Thirdly, the upper beam of the cabin frame is formed in an outwardly protruding arc shape in front view along the upper edge of the door panel.

This reduces the feeling of constriction from the side of the living space to the upper beam of the cabin frame, and allows the user to feel relaxed and healed, thereby improving the tractor working environment.
Fourth, the left and right side edges of the front panel are formed in an outwardly projecting arc shape in front view and / or side view, and the front and rear edges of the door panel project outward in front view and / or side view. That is, it is formed in an arc shape.
As a result, the feeling of narrowness in the left and right direction and the front and rear direction of the living space can be reduced, and a relaxed and healed state can be felt, thereby improving the tractor working environment.

Fifth, the left and right front struts of the cabin frame are formed in an outwardly projecting arc shape in front view and / or side view along the left and right side edges of the front panel, and the left and right front struts and left and right sides of the cabin frame are formed. The part struts are formed in an outwardly protruding arc shape in front view and / or side view along the front edge and rear edge of the door panel.
Thus, the left and right front struts and the left and right side struts of the cabin frame also reduce the feeling of narrowness in the left and right and front and rear directions of the living space, provide a relaxed and healed state, and improve the tractor working environment.

Sixth, the upper edge of the front panel is formed in an outwardly protruding arc shape in front view, and the upper front beam of the cabin frame is formed in an outwardly protruding arc shape in front view along the upper edge of the front panel. Is.
As a result, it is possible to enlarge the field of vision in the front and upper direction, which can reduce the feeling of constriction and create a state where a sense of relaxation and healing can be created.
Seventh, the roof is provided with an inner roof on the lower surface side, and the lower surface of the inner roof is curved in an upwardly bulging shape.

  As a result, the living space of the head can be enlarged, which can reduce the feeling of constriction, and create a state where a sense of relaxation and healing can be created.

  According to the present invention, it is possible to reduce the feeling of narrowness in all directions of the living space before and after, up and down, and left and right, to feel relaxed and healed, and to improve the tractor working environment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In FIG. 1, a tractor 1 has a tractor vehicle body 6 formed by directly connecting an engine 2, a clutch housing 3, a transmission case 4, a front axle frame 5, and the like, and a bonnet 7 covering the engine 2 and the like is provided on the front side of the tractor vehicle body 6. A pair of left and right front wheels 8 are supported on a front axle case suspended from the front axle frame 5, and a pair of rear wheels 9 are supported on the rear side of the tractor vehicle body 6 via left and right rear axle cases. A cabin device 11 is mounted on the rear upper part in an independently suspended state.

The cabin device 11 has a front portion suspended from a front portion of the transmission case 4 or a support body 10A projecting left and right outward from the clutch housing 3 via a cushion rubber 10B, and is mounted on a rear axle case of a rear portion of the transmission case 4. A rear portion is suspended from a fixed support bracket 10C via a cushion rubber 10D.
1 to 7, the cabin apparatus 11 includes a box-shaped cabin frame 12 that serves as a framework, and the cabin frame 12 includes a floor seat 13, a front board 14, a front panel 15, left and right leg panel 16, A door panel 17, a rear panel 18, a rear panel 19, and a roof 20 are mounted.

The cabin frame 12 includes a pair of front struts 22 disposed on the left and right front portions, a pair of side struts 23 disposed on the left and right side portions, and a pair of left and right rear struts 24 disposed on the back surface. A strut portion is configured.
The upper front beam 25 connecting the upper ends of the pair of left and right front columns 22 and the upper ends of the pair of left and right side columns 23 are connected on the rear side, and the upper ends of the left and right rear columns 24 are also connected to the middle portion. The upper rear beam 26 and the pair of left and right upper beams 27 that connect the upper ends of the front columns 22 and the side columns 23 on the same left and right sides constitute an upper frame 29 in the horizontal direction.

The upper frame 29 is connected to the upper beam portion including the end of the upper rear beam 26 and the upper beam 27 at both right and left ends of the erection member 28, and the erection member 28 projects upward from the upper surface of the upper frame 29. In this state, it is constructed as a part of the lops structure that makes the cabin frame 12 strong.
The cabin frame 12 includes a lower front member 31 projecting inwardly from the lower end of the pair of left and right front struts 22, a lower member 32 projecting rearward from the lower ends of the pair of left and right front struts 22, The fender support member 33 connected between the rear end of the side member 32 and the lower ends of the left and right side columns 23, and the lower ends of the left and right columns 23 are connected to each other, and the lower ends of the left and right rear columns 24 are also connected in the middle. A lower frame 30 is formed by the lower front member 31, the lower member 32, the fender support member 33, and the lower rear member 34, and the lower frame 30 is connected to the floor 30. The periphery of the seat 13 is fixed, and the lower portion of the front substrate 14 is connected and fixed to the inner end side of the left and right lower front members 31.

For the front strut 22 and the side strut 23, as shown in FIG. 5, a deformed tubular member having a hollow groove formed on the surface of the pipe material is used. The rear strut 24, the upper front beam 25, the upper rear beam 26, the upper beam 27, the erection member 28, the lower front member 31, the lower member 32, the fender support member 33, the lower rear member 34, and the like are deformed tubular members, A rectangular tube-shaped member or a band plate is used.
The floor sheet 13 includes a step portion 13a, a mounting portion 13b, a back wall portion 13c, and a rear wheel fender portion 13d positioned on both the left and right sides of the mounting portion 13b and the back wall portion 13c. Or are individually formed of sheet metal or resin, and are joined via a fastener or by welding.

A driver seat support base 35 is mounted on the mounting portion 13b, a driver seat 36 is mounted on the driver seat support base 35, and an air conditioner (air conditioner) is mounted on the mounting portion 13b below the driver seat support base 35. Device) 37 is arranged.
A steering frame 38 is mounted on the rear side of the front substrate 14, and a handle post 40 of a handle 39, a steering cylinder, a brake cylinder, and the like are supported on the steering frame 38, thereby constituting a steering unit 41.
The front board 14 is disposed at the center in the left-right direction at the lower front side of the cabin frame 12 and closes the rear surface of the engine room in the bonnet 7 so that the engine 2 side and the interior space of the cabin apparatus 11, that is, the cabin apparatus. 11 is a partition wall that partitions the room from the outside. The upper edge and the left and right side edges of the front substrate 14 are linearly formed in a plan view and a side view, and support the center of the lower edge of the front panel 15 and the inner edges of the left and right leg panel 16, respectively.

1 to 10, the front side of the cabin apparatus 11 includes an upper front panel 15 and left and right leg panels 16 at the lower left and right sides of the front panel 15. Is formed in a substantially spherical shape with a forward (outward) bulging shape.
The pair of left and right front struts 12 are curved in an upward (outward) protruding arc shape so as to gradually go outward in the left-right direction as going from the both ends in the vertical direction to the center in the vertical direction, and the vertical direction of the pair of left and right front struts 12 The upper side of the center is curved in a backward inclined shape so as to gradually go backward as it goes to the upper end. That is, since each front support | pillar 12 is formed in the outward projecting arc shape which swells diagonally forward with respect to the line which connects the upper and lower ends, it has an outward projecting arc shape in front view and side view.

The upper front beam 25 is formed in an upward (outward) projecting arc shape of an upward bulge so as to go upward as it goes from the left and right ends to the center in the left and right direction. It is a side-projecting arc shape (arch shape).
As shown in FIGS. 8 to 10, the front panel 15 attached to the left and right front columns 12 and the upper front beam 25 is outward in front view and side view so that the left and right side edges 15 a fit the left and right front columns 12. It is formed in a protruding arc shape, and the upper edge 15b is formed in an upward (outward) protruding arc shape in front view so as to fit the upper front beam 25, and gradually moves forward from the left and right side edges 15a and the upper edge 15b to the center side. It is a substantially spherical surface that protrudes, and the lower edge 15c is substantially linear.

By forming the front panel 15 into a substantially spherical shape, the front surface of the cabin device 11 is reduced not only between the upper and lower edges but also between the left and right edges, so that the feeling of narrowness is reduced and a feeling of relaxation and healing is felt.
The lower center 15d of the front panel 15 facing the control unit 41 is deformed so as to approach the flat shape from the spherical shape of the other part, as shown by solid lines in FIGS. 2 and 4 and imaginary lines in FIGS. The wiper swinging shaft through hole 15e is perforated.
Each of the left and right leg panels 16 has a rectangular flat plate shape, the upper edge of which is joined to the lower edge 15c of the front panel 15 via an adhesive, and the left and right side edges and the lower edge of the left and right front struts 12. The lower and front substrates 14 and the lower front material 31 are attached.

In the left and right side portions of the cabin device 11 shown in FIGS. 1 to 7 and 11 to 13, the left and right side columns 23 are slightly inclined so as to go to the left and right outward and rearward as they go from the upper end to the lower end, and further from the upper end to the lower end. As it goes, it is bent in a rearward protruding arc shape.
From the rear upper end to the front lower end of the fender support member 33, the shape is connected to the upper surface of the rear wheel fender portion 13 d of the floor seat 13 in a side view and is connected to the side column from the lower member 32 in the front view. The left and right side struts 23 and the fender support member 33 are formed in an outward projecting shape in a side view. The fender support member 33 is formed in an outward projecting arc shape that is slightly bent from the rear upper end to the front lower end in a front view and a plan view.

The pair of left and right upper beams 27 are horizontal in a side view, but are curved in an outwardly projecting arc shape so as to go outward in the left and right direction from both ends in the front and rear direction to the center in the front and rear direction in a plan view.
Each of the left and right door panels 17 is pivotally supported by a side support 23 via a pivotal support 43 in the vicinity of the rear upper edge 17a, and is a rear pivot type front opening type. The rear upper edge 17a is connected to the side support 23. The rear lower edge 17b is adapted to the fender support member 33, the front edge 17c is adapted to the front column 12, the upper edge 17d is adapted to the upper beam 27, and the lower edge 17e is adapted to the lower material 32. Reference numeral 17f denotes an attachment hole for the pivotal support 43, and 17g denotes an attachment hole for the handle.

That is, as shown in FIGS. 11 to 13, the door panel 17 is formed in a substantially spherical shape having an outward bulge shape as a whole, and the upper edge 17 d is an outward projecting circle in plan view along the upper beam 27. A rear edge formed in an arc shape and including a front edge 17c, a rear upper edge 17a, and a rear lower edge 17b is formed in an outwardly projecting arc shape in a front view, and the rear lower edge 17b is formed on the rear wheel fender portion 13d and the fender support member 33. Along the side view, it is formed in a front-upward projecting arc shape and in a plan view in an outward projecting arc shape.
By forming the door panel 17 into a substantially spherical shape, the side surface of the cabin device 11 is reduced not only between the upper and lower edges but also between the front and rear edges, so that the feeling of narrowness is relaxed and a feeling of comfort is felt. Further, coupled with the spherical front panel 15, it is possible to reduce the sense of narrowness in all directions of the living space, front, back, top, bottom, left and right.

1 to 7, from the side to the back of the cabin apparatus 11, the upper rear beam 26 is curved at the left and right ends of the cabin apparatus 11 with a small curvature so as to gradually increase toward the front as it goes outward in the left-right direction. 26a is formed, and the rear portion 26b between the corner portions 26a is formed in a rearward (outward) protruding arc shape with a large curvature.
A joint member 44 having a divergent shape is fitted and fixed to both the corner portions 26 a, and an end portion of the joint member 44 that spreads up and down is fixed to an upper portion of the side column 23. The left and right joining members 44 increase the coupling strength between the upper rear beam 26 and the side column 23 and constitute a part of the upper beam 27.

As with the upper rear beam 26, the lower rear member 34 is formed with a corner portion 34a that is curved so that the left and right ends thereof gradually increase toward the front side in the left-right direction corresponding to the upper rear beam 26. The rear portion 34b between the corner portions 34a is formed in a rearward (outward) protruding arc shape.
A joint member 44 having a divergent shape is fitted and fixed to both the corner portions 34a, and an end portion of the joint member 44 extending in the vertical direction is fixed to a lower portion of the side column 23. The left and right joining members 44 increase the bonding strength between the lower rear member 34 and the side struts 23.
The left and right corner portions 34a and the rear portion 34b of the lower rear member 34 are located outward from the left and right corner portions 26a and the rear portion 26b of the upper rear beam 26, and are larger than the upper rear beam 26. The space between the lower rear member 34 and the lower rear member 34 is inclined downward.

Each of the left and right rear struts 24 is made of a linear member, and is arranged so as to extend downward from the upper end joined to the rear portion 26b of the upper rear beam 26 to the lower end joined to the rear portion 34b of the lower rear member 34, and from the upper end. It is located rearward as it goes to the lower end, and is inclined downward and rearward.
The rear panel 18 has an arc shape with a cross-sectional plane projecting outward and has a substantially straight side view, and upper and lower edges extend along the upper rear beam 26, the lower rear member 34, and the joining member 44 fixed thereto, and the front edge Is along the rear protruding arc shape of the side column 23, and the rear edge is a straight line shape following the shape of the rear column 24, and is fixed to each.

The rear panel 19 has a substantially trapezoidal shape when viewed from the back, and is formed in a rearward projecting arc shape in plan view. The upper and lower edges and the left and right edges are fixed along the upper rear beam 26, the lower rear member 34, and the rear column 24, respectively. Yes.
The front panel 15, the left and right leg panels 16, the door panel 17, the rear panel 18, and the rear panel 19 are each made of transparent glass or synthetic resin.
The front strut 22 is formed in an arc shape protruding in the front oblique direction, the side struts 23 and the rear strut 24 are protruded outward from the upper end, and the front panel 15 and the door panel 17 both have a substantially spherical shape that bulges outward. And the rear panel 18 and the rear panel 19 are arcuately projecting outward, so that the cabin device 11 bulges outward in the vertical center portion in both front and side views, As a result, the cabin living space has a round shape (substantially round shape) with few flat surfaces in plan view.

In the upper part of the cabin apparatus 11 and the roof 20 shown in FIGS. 1 to 3, 6, 7, and 14 to 16, the roof 20 is fixed to the upper frame 29 of the cabin frame 12, and above and below the installation member 28. An inner roof 46 and an outer roof 47 are provided. The inner roof 46 is disposed on the inner side to form a ceiling portion in the cabin, and the outer roof 47 is disposed above the inner roof 46 to form a canopy.
The erection member 28 is formed of a square pipe or a band plate, and both left and right ends are fixed to the joining member 44 and / or the side column 23 constituting the upper beam portion of the upper frame 29, and further upward from the upper frame 29. Protruding to

The erection member 28 has left and right leg portions 28a fixed upright on the upper surface of the joining member 44 and the like, and a substantially horizontal midway portion 28b positioned above the upper frame 29 between the left and right leg portions 28a. The front frame is substantially U-shaped (or arched) and forms a reinforcing frame that surrounds the driver's seat together with the side struts 23 to improve the strength of the cabin frame 12.
The erection member 28 may be connected to the left and right ends of the upper rear beam 26 or the rear end of the left and right upper beam 27, and a dotted line in FIG. 6 is provided between the left and right leg portions 28a and the upper beam portion connecting the left and right leg portions 28a. A connection reinforcing member 48 may be provided as shown in FIG.

The inner roof 46 and the outer roof 47 are made of synthetic resin or sheet metal, and the inner roof 46 is positioned below the erection member 28 and its peripheral portion is fixed to the lower surface side of the upper frame 29 via fasteners and stays. The outer roof 47 is located on the upper side of the erection member 28, and its peripheral part is fixed to the upper surface side of the upper frame 29 via a fastener and a stay.
As shown in FIGS. 6, 7, and 15, the inner roof 46 has a rear portion 46 a connected to the lower surface of the upper rear beam 26, and a front portion 46 b connected to the upper front beam 25 having an upward projecting arc shape. Since the lower surface of the front part 46b is curved upwardly, the front part 46b is located above the rear part 46a in the side view, and the midway part in the front-rear direction is located further above the front part 46b. There will be. And the lower surface 46c of the inner roof 46 is curving so that it may bulge upward.

Accordingly, the inner roof 46 has a peripheral portion positioned on the lower surface of the upper front beam 25 and the upper frame 29, but the lower surface 46c thereof is positioned higher than the upper surface of the upper frame 29, and the lower surface 46c has a high front-rear midway portion in side view. It is formed in an upwardly protruding arc shape, and from the front part 46b to the vicinity of the rear part, it is formed in an arc shape that protrudes upward from the left and right side parts 46d to the center side in a front view. The living space (head clearance) can be greatly expanded.
An air conditioner operation tool placement portion 51 and an audio equipment placement portion 52 are integrally formed on the left and right side portions 46 d (right side) of the inner roof 46 so as to protrude downward toward the center side. The air conditioner operating tool for operating the air conditioner 37 is arranged in the audio equipment arrangement section 52, and the driver can easily operate them on the side of the head.

  Conventionally, the air conditioner operation tool placement portion 51 and the audio equipment placement portion 52 are not obstructions in the front upper view even if they are placed at the front portion of the inner roof 46, but as described above, If the front upper field of view is enlarged by forming the upper part of the front part 46b, the upper front beam 25 and the front panel 15 in an upward projecting arc shape, the conventional front arrangement structure obstructs the front upper field of view. Therefore, the air conditioner operating tool and the audio device are arranged on the left and right side portions 46d of the inner roof 46, so that the living space above the head and the front upper field of view can be improved. You may form the said air-conditioner operation tool arrangement | positioning part 51 and the audio equipment arrangement | positioning part 52 in the front-back reverse position.

The upper end portion of the front panel 15 and the front end portion of the lower surface of the inner roof 46 are formed so that the inner surface is continuous, smoothing the flow of wind from the front to the ceiling, and expanding the living space above the head. In addition, it is preferable that the front upper field of view can be improved.
The outer roof 47 is formed in a double structure having a space inside, and an outside air introduction port portion 47a for taking in outside air to be introduced into the air conditioner 37 is formed on both left and right sides, and the air roof is formed in the inside. A filter is placed.
The inner roof 46 and the outer roof 47 not only serve to arrange the erection member 28, but also form a space for the outside air introduced from the outside air introduction port 47a, coupled with the double structure of the outer roof 47, the cabin apparatus 11 The heat insulation structure is constituted by two air layers on the roof portion.

The outside air inlet 47 a is communicated with the air conditioner 37 through the interior space of the roof 20 and the interior of the side column 23. The side column 23 uses the inside as a duct for introducing outside air, and the side column 23 and the air conditioner 37 are communicated with each other through a separately formed duct.
In addition, work lamp cover portions 47 b are formed to bulge upward on the left and right sides of the outer roof 47. The work lamp 53 is attached to the upper front beam 25 via a stay.
Below the driver's seat 36, a sealed air conditioner accommodation chamber 56 for accommodating an air conditioner 37 is formed by the driver's seat mounting portion 13b, the driver's seat support base 35, and the like, and an inside air inlet 57 is formed in the driver seat support base 35. In addition, a filter 58 is provided.

A recess 13e along the front-rear direction is formed in the step portion 13a of the lower substrate 13 serving as a floor sheet of the cabin apparatus 11, and a delivery duct 59 is disposed in the recess 13e. The conditioned air discharged from the air conditioner storage chamber 56 can be sent to the control unit 41 side.
The front board 14 at the front portion of the cabin device 11 is formed by attaching a relay duct portion 60 that is integrally formed or separately formed, and the lower end of the relay duct portion 60 is connected to the delivery duct 59. .

Further, a blow-out side duct 61 is provided on a surface (rear surface) of the front board 14 on the control unit 41 side, and is connected to the upper end of the relay duct unit 60. The outlet duct 61 includes an upward outlet 61a that blows upward on the front panel 15 from below, a downward outlet 61b that blows to the driver's feet, and a face outlet 61c that blows toward the driver's face. A plurality of outlets are formed, and each outlet can be opened and closed.
The conditioned air discharged from the air conditioner 37 is blown into the cabin device 11 through the delivery duct 59, the relay duct portion 60 and the blowout side duct 61.

The conditioned air blown upward from the lower air outlet 61a to the front panel 15 is mainly used to prevent the front panel 15 from fogging. However, the front panel 15 is substantially spherical and the lower surface 46c of the inner roof 46 is also front and rear. Since the middle part in the direction has a middle-high curve shape, it smoothly flows from the front panel 15 to the lower surface 46c of the inner roof 46 without receiving a large resistance, hits the rear panel 19 and circulates to the inside air intake 57.
When the conditioned air blown from the downward air outlet 61b, the face air outlet 61c, or the like hits the door panel 17, the door panel 17 has a substantially spherical surface, and the lower surface 46c of the inner roof 46 has a middle-high curve shape in the left-right direction. The inner roof 46 smoothly flows without receiving a large resistance to the lower surface 46c.

When the conditioned air blown from the face-facing air outlet 61c hits the door panel 17 and the rear panel 18, it is guided smoothly by the spherical surface of the door panel 17 and the arcuate surface of the rear panel 18 without receiving a large resistance to the rear panel 19. It is guided and circulates to the inside air intake 57.
The cabin device 11 has an inner surface other than its lower portion formed into a spherical surface and a circular arc surface, and has a substantially round (egg) shape formed with a substantially round surface. Moreover, it circulates smoothly without receiving a large resistance in the front-rear direction, and there is little stagnation, and the temperature inside the cabin apparatus 11 can be adjusted efficiently and satisfactorily.

Many inner surfaces of the cabin device 11 forming the living space are formed in a spherical surface and an arc surface so as to have a substantially egg shape. The work space in all directions can be expanded to improve operability and comfort, and the feeling of constriction can be reduced, and the tractor working environment can be improved by making it feel relaxed and healed.
In addition, the fact that the outer surface of the cabin device 11 is formed into a spherical surface or a circular arc surface and has a substantially egg shape reduces external air resistance, reduces the occurrence of panel chatter noise due to strong winds, and causes external impacts such as stone collisions. It is robust against impact and can improve durability.

The overall shape of the cabin frame 12, especially the front struts 22, the side struts 23, the upper front beams 25, etc., is rounder than the prior art, greatly expanding the field of view in the horizontal direction and the front upper direction. In addition to reducing, reducing and relaxing, it is also robust against external impacts.
In the present invention, the shape of each member and the positional relationship between the front, back, left, and right in the above embodiment are best configured as shown in FIGS. However, it is not limited to the said embodiment, A member, a structure can be variously deformed, and a combination can also be changed.

For example, the left and right side edges of the front panel 15 are formed in an outward projecting arc shape in front view and side view, but may be formed in an outward projecting arc shape in front view or side view. Along with this, the left and right front struts of the cabin frame along the left and right side edges of the front panel are formed in an outward projecting arc shape in front view and side view, but project outward in front view or side view. You may form in circular arc shape.
Although the front edge and the rear edge of the door panel 17 are formed in an outward projecting arc shape in a front view and a side view, they may be formed in an outward projecting arc shape in a front view or a side view. Along with this, the left and right front struts and left and right side struts of the cabin frame 12 along the front edge and rear edge of the door panel 17 are formed in an outwardly protruding arc shape in front view and side view, respectively. It may be formed in an outward projecting arc shape in a front view or a side view.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall perspective view of a cabin device. It is the same sectional side view. It is the same exploded perspective view. It is the top view which removed the roof of the cabin apparatus. It is a front view of a cabin frame. It is a cross-sectional side view of the upper half of a cabin apparatus. It is a front view of a front panel. It is the XX sectional view taken on the line of FIG. It is a bottom view of a front panel. It is a side view of a door panel. It is a front view of a door panel. It is a top view of a door panel. It is a bottom view of an inner roof. It is a front view of an inner roof. It is the YY sectional view taken on the line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tractor 6 Tractor vehicle body 11 Cabin apparatus 12 Cabin frame 15 Front panel 16 Leg panel 17 Door panel 18 Rear panel 19 Rear panel 20 Roof 22 Front strut 23 Side strut 24 Rear strut 25 Upper front beam 26 Upper rear beam 27 Upper beam 28 Construction Member 29 Upper frame 30 Lower frame 36 Driver's seat 37 Air conditioner 41 Control section 46 Inner roof 47 Outer roof

Claims (7)

In a cabin device in which a front frame on the front, a rear pivotal door panel on the left and right sides, an upper roof, and a lower floor seat are mounted on a cabin frame fixed to the tractor body,
A cabin surrounded by the front panel, the door panel, the roof and the floor seat, wherein the front panel is formed in a substantially spherical shape having an outward bulge shape, and the door panel is formed in a substantially spherical shape having an outward bulge shape. A cabin apparatus characterized in that the living space is formed in a substantially egg shape in plan view.   The cabin device according to claim 1, wherein an upper edge of the door panel is formed in an outward projecting arc shape in a plan view.   The cabin apparatus according to claim 2, wherein the upper beam of the cabin frame is formed in an outward projecting arc shape along the upper edge of the door panel in a front view.   The left and right side edges of the front panel are formed in an outwardly projecting arc shape in front view and / or side view, and the front and rear edges of the door panel are formed in an outward projecting arc shape in front view and / or side view. The cabin device according to any one of claims 1 to 3, wherein the cabin device is provided.   The left and right front struts of the cabin frame are formed in an outward projecting arc shape in front view and / or side view along the left and right side edges of the front panel, and the left and right front struts and left and right side struts of the cabin frame are The cabin device according to claim 4, wherein the cabin device is formed in an outwardly projecting arc shape in front view and / or side view along the front edge and rear edge of the door panel.   The upper edge of the front panel is formed in an outwardly protruding arc shape in front view, and the upper front beam of the cabin frame is formed in an outwardly protruding arc shape in front view along the upper edge of the front panel. The cabin apparatus according to any one of claims 1 to 5, wherein   The cabin apparatus according to any one of claims 1 to 6, wherein an inner roof is provided on a lower surface side of the roof, and a lower surface of the inner roof is curved in an upward bulging shape.

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