WO2022202011A1

WO2022202011A1 - Combine harvester

Info

Publication number: WO2022202011A1
Application number: PCT/JP2022/006651
Authority: WO
Inventors: 晋輔岡田; 治正北岡
Original assignee: ヤンマーホールディングス株式会社
Priority date: 2021-03-25
Filing date: 2022-02-18
Publication date: 2022-09-29
Also published as: KR20230160800A

Abstract

The present invention can provide a combine harvester in which a driver's space within a cabin can be ensured and a space behind the cabin can be efficiently used.　This combine harvester is provided with a cabin 30 covering a driving part. The cabin 30 has a right side wall 34 provided with a door 51 for entering/exiting the cabin 30. The right side wall 34 has a back end that is inclined backward when viewed in a side view. The cabin 30 has a back wall 32 formed along the back end of the right side wall 34. A capacitor for an air conditioning device is disposed below the back wall 32 of the cabin 30.

Description

combine

The present invention relates to a combine harvester with a cabin that covers the operating part.

Regarding a cabin that covers an operating part in a combine harvester, for example, in Patent Document 1, a condenser, which is a cooling device for an air conditioner, is arranged on the rear wall of the cabin, and outside air is supplied to the condenser at the rear end of the side wall of the cabin. An arrangement is disclosed that provides an outside air intake for intake. In the cabin disclosed in Patent Document 1, a transmission window is provided in each of a portion above the condenser and a portion above the outside air intake.

JP 2017-132381 A

According to the configuration of the cabin disclosed in Patent Document 1, the space behind the driver's seat arranged in the driver's seat in the cabin is widened, so that the living space in the cabin is narrowed accordingly. Efficient use of side space is difficult.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a combine harvester that can secure a living space in the cabin and can effectively utilize the space behind the cabin. for the purpose.

A combine according to the present invention is a combine having a cabin that covers an operating portion, and a side wall portion of the cabin provided with a door for getting in and out of the cabin tilts a rear edge portion backward in a side view. and the rear wall portion of the cabin is formed along the rear end portion of the side wall portion.

A combine according to another aspect of the present invention is the combine in which a condenser for an air conditioner is arranged below the rear wall portion of the cabin.

A combine according to another aspect of the present invention is the combine in which a rear window is provided on the rear wall of the cabin.

A combine according to another aspect of the present invention is the combine in which the capacitor is provided below the rear window.

A combine according to another aspect of the present invention includes an engine cover disposed on the side of the engine provided on the rear lower side of the cabin in the combine, and the engine cover is positioned above the engine cover in a side view. A part of the cabin and the rear wall portion of the cabin are arranged so as to meet each other.

A combine according to another aspect of the present invention is the combine in which the rear wall portion of the cabin has a rearwardly inclined shape in a side view, and the engine cover is at least partly formed on the rear wall portion in a side view. It is provided so as to be positioned on the lower side.

In the combine according to another aspect of the present invention, the side wall portion on the side where the engine cover is located, of the left and right side wall portions of the cabin, is located above the engine cover in a side view. is provided with a transmission window.

A combine according to another aspect of the present invention is the combine in which a lower portion of the transmission window and an upper portion of the engine cover are opposed to each other in the front-rear direction when viewed from the side.

A combine according to another aspect of the present invention includes a condenser of an air conditioner arranged on the rear side of the cabin in the combine, and a position overlapping the engine cover in a side view for taking in outside air to the condenser. An outside air intake is provided.

A combine according to another aspect of the present invention is the combine, in which the transmission window is provided in a slanted shape from the front side to the rear side in a plan view so as to go from the left and right outer sides to the left and right inner sides.

A combine according to another aspect of the present invention is the combine, wherein an upper cover portion located behind the transmission window in a side view is provided above the engine cover,
The upper cover portion is provided in a slanted shape so as to expose the transmissive window when viewed from the rear.

According to the present invention, the living space in the cabin can be secured, and the space behind the cabin can be effectively used.

It is a left view of the combine concerning one embodiment of the present invention. It is a right view of the combine which concerns on one Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a top view of the combine which concerns on one Embodiment of this invention. It is a right side view showing a cabin and an outside air introduction cover concerning one embodiment of the present invention. It is a left side view of a cabin concerning one embodiment of the present invention. It is a right side view of a cabin concerning one embodiment of the present invention. 1 is a rear view of a cabin according to an embodiment of the invention; FIG. It is a right-rear perspective view of the cabin which concerns on one Embodiment of this invention. 1 is a right side sectional view of a cabin according to one embodiment of the present invention; FIG. FIG. 4 is a cross-sectional plan view showing the configuration of the right side wall portion of the cabin according to the embodiment of the present invention; FIG. 4 is a plan view showing a transmissive window and an upper cover portion according to one embodiment of the present invention; 1 is a plan view schematically showing the inside of a roof portion of a cabin according to one embodiment of the present invention; FIG. 1 is a schematic diagram showing the arrangement configuration of a capacitor unit and the configuration of an air conditioner unit according to an embodiment of the present invention; FIG. It is a left rear perspective view showing a part of cabin concerning one embodiment of the present invention. FIG. 4 is a rear cross-sectional view showing the flow path configuration of the outside air introduction duct according to one embodiment of the present invention; FIG. 3 is a perspective view showing the configuration of a shutter section according to one embodiment of the present invention;

The present invention relates to a combine harvester having a cabin that covers an operation part, by devising the side view shape of the rear wall part of the cabin, etc., to secure the opening area of the outside air intake provided at the rear part of the cabin and from inside the cabin. It is intended to obtain a configuration that is advantageous in terms of rearward visibility and the like.

In addition, the present invention provides a combine having a cabin that covers the operation part, by devising the side view shape of the rear wall of the cabin, etc., to secure the opening area of the outside air intake provided at the rear of the cabin and the cabin. To obtain a configuration that is advantageous for rearward visibility from the inside. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First, the overall configuration of a combine harvester 1 according to this embodiment will be described with reference to FIGS. 1 to 3. FIG. In the following description, the left side and the right side of the combine 1 as viewed from the front are referred to as the left side and the right side of the combine 1, respectively.

As shown in FIGS. 1 to 3, the combine 1 includes a traveling section 2 configured as a crawler-type traveling device having a pair of left and

right crawler sections

3, 3, and a traveling body 4 supported by the traveling section 2. Prepare. The combine 1 includes a harvesting section 5 , a threshing section 6 , a grain tank 7 , a sorting section 8 , a discharge auger 9 , and a waste straw processing section 10 .

Each crawler portion 3 constituting the traveling portion 2 includes a track frame 3a extending in the front-rear direction below the traveling body 4, various rotating bodies supported by the track frame 3a, and wound around these rotating bodies. It has a crawler belt 3b. The crawler section 3 includes a drive sprocket 3c and the like supported by the front end portion of the track frame 3a as rotating bodies supported by the track frame 3a. The crawler portion 3 is driven by receiving power transmitted from an engine 11 as a drive source mounted on the traveling body 4 at the drive sprocket 3c.

The harvesting unit 5 is a device configuration for harvesting grain culms in a field while harvesting them, and is provided in the front part of the traveling body 4 . The reaping part 5 is provided on the front side of the traveling body 4 over substantially the entire body width of the combine harvester 1 . The reaping unit 5 is attached to the traveling body 4 so as to be rotatable about a predetermined axis via a hydraulic cylinder for elevating. ing.

The reaping unit 5 has a reaping supporter frame 5a as a reaping frame, and the reaping supporter frame 5a supports a dividing member 5b, a lifting device 5c, a cutting blade device 5e, and a grain culm conveying device 5f. It is The harvesting unit 5 divides the grain culms in the field by the dividing body 5b, raises the divided grain culms by the lifting device 5c, and conveys the raised grain culms rearward by the grain culm conveying device 5f. It cuts and reaps with the reaping blade device 5e. Each device of the reaping unit 5 operates when power is transmitted from the engine 11 of the combine harvester 1 .

A threshing unit 6 for threshing the culms harvested by the harvesting unit 5 and a grain tank 7 for storing the grains taken out from the threshing unit 6 are provided side by side on the traveling body 4. there is The threshing part 6 is arranged on the left side of the machine body, and the grain tank 7 is arranged on the right side of the machine body.

The threshing unit 6 has a threshing cylinder 6a and a processing cylinder (not shown) whose rotation axis is in the front-rear direction, and a culm supply device provided on the left side of the threshing cylinder 6a. The culm supply device grips the base of the culm and conveys the culm rearward in a recumbent posture with the tip of the culm on the side of the handling drum 6a. The grain culm supply device includes a feed chain wound around a plurality of sprockets having a left-right direction as a rotation axis direction, and a grain culm supply pinching body that pinches the root of the grain culm in cooperation with the feed chain. have.

Below the threshing unit 6 on the traveling machine body 4, a sorting unit 8 for sorting the processed material threshed by the threshing unit 6 is provided. The sorting unit 8 has a rocking sorting device 8a, and a wind sorting device and a grain conveying device (not shown). The sorting unit 8 sorts the processed materials dropped from the threshing unit 6 by the rocking sorting device 8a, and wind sorts the processed materials after the rocking sorting by the wind sorting device. The sorting unit 8 transports the grains of the processed material after wind sorting to the right toward the grain tank 7 by the grain transport device, and blows straw scraps, dust, etc. backward by the wind sorter to the machine body. to the outside of the Grains conveyed toward the grain tank 7 by the grain conveying device are stored in the grain tank 7 .

A discharge auger 9 serving as a grain discharging device for discharging the grains in the grain tank 7 to the outside is rotatably provided at the right rear end portion of the traveling body 4 . The grains stored in the grain tank 7 are conveyed by a discharge auger 9 having a screw conveyor and discharged from a discharge port 9 a provided at the tip of the discharge auger 9 . The grains discharged from the discharge port 9a are thrown into a truck bed, a container, or the like.

On the other hand, behind the threshing unit 6 on the traveling machine body 4, a waste straw processing unit 10 for processing the waste straw after the threshing processing by the threshing unit 6 is provided. The waste straw processing unit 10 has a waste straw conveying device 10a and a waste straw cutting device 10b. The straw conveying device 10a conveys the threshed grain culm (extracted culm) rearward by the threshing unit 6 and discharges it to the outside of the machine body, or conveys it to the straw cutting device 10b. The straw cutting device 10b cuts the culm conveyed from the straw conveying device 10a and discharges it to the outside of the body.

In addition, on the running body 4, an operation section 12 covered with a cabin 30 is provided on the right side of the reaping section 5 and in front of the grain tank 7 (see FIG. 9). The driving unit 12 is provided inside the cabin 30 . As shown in FIG. 9 , a steering wheel 18 is provided in front of the driving section 12 as a steering operation section, and a driver's seat 19 is provided behind the steering wheel 18 . Further, on the left side of the driver's seat 19, there is provided a side operation unit 20 in which various operation tools such as a main shift lever 21 and an auxiliary shift lever 22 are arranged on a side column 23. As shown in FIG.

A prime mover section including an engine 11 installed in an engine room 13 is provided below and behind the operation section 12 . The power of the engine 11 is transmitted to various devices of each part of the combine harvester 1, such as the traveling part 2, the reaping part 5, the threshing part 6, the sorting part 8, the discharge auger 9, the waste straw processing part 10, etc. be done. Engine 11 is a diesel engine.

A radiator 14 is arranged on the right side of the engine 11 in the engine room 13 (see FIG. 3). The radiator 14 is provided in the middle of the cooling water circulation path of the engine 11, and cools the cooling water sent from the engine 11 by heat exchange with the outside air. Cooling water cooled by the radiator 14 is returned to the engine 11 .

Also, as shown in FIG. 2 , an outside air introduction cover 15 is provided on the right side of the engine 11 as an engine cover that covers the right side of the engine room 13 . A radiator 14 is positioned inside the outside air introduction cover 15 . That is, the radiator 14 is arranged between the engine 11 and the outside air introduction cover 15 . Outside air taken in from the outside air introduction cover 15 is used for heat exchange in the radiator 14 .

The outside air introduction cover 15 is provided between the cabin 30 and the grain tank 7 on the right side of the combine harvester 1 . The outside air introduction cover 15 is provided so as to be flush with the right side surface of the grain tank 7 .

The rear edge of the outside air introduction cover 15 is formed linearly along the vertical direction when viewed from the side. The outside air introduction cover 15 is rotatable via a hinge portion (not shown) with respect to a support (not shown) erected on the traveling body 4 along the rear edge thereof with the vertical direction as the rotation axis direction. Supported. The outside air introduction cover 15 is provided to be openable and closable so as to be opened from the front side by a rear side rotation support portion for the column.

When the outside air introduction cover 15 is closed, the outside air introduction cover 15 covers the right side of the engine 11 and the radiator 14, and the engine room 13 is closed from the right side. By opening the outside air introduction cover 15, the right side of the engine room 13 is opened.

A rotary screen 16 is provided on the outside air introduction cover 15 . The rotary screen 16 is configured to take outside air into the engine room 13 as cooling air for the engine 11 . The rotary screen 16 is rotatably supported by a rotary support located at the center of a circular opening 16a formed in the outside air introduction cover 15, and is configured to be rotated by being driven by a motor (not shown). ing.

The rotary screen 16 has a configuration in which a mesh-like dustproof net 16b is stretched over a circular opening 16a. The dust-proof net 16b collects dust, dirt, straw, etc., and prevents dust and the like from entering the engine room 13 together with the outside air. Dust and the like collected by the dust-proof net 16b are removed by a suction device 17 provided outside the rotary screen 16. As shown in FIG. The suction device 17 is configured to suck dust or the like adhering to the dust-proof net 16b and discharge it to the outside of the machine.

As described above, the combine harvester 1 includes the cabin 30 that covers the operation section 12, the engine 11 that is provided on the lower rear side of the cabin 30, and the outside air introduction cover 15 that is arranged on the side of the engine 11.

The configuration of the cabin 30 will be described using FIGS. 4 to 15. FIG. The cabin 30 has a front portion 31, a rear wall portion 32, a left side wall portion 33, a right side wall portion 34, a roof portion 35 forming a ceiling portion, and a floor portion 36. These portions form a generally box-like shape as a whole. It is

The front surface portion 31 of the cabin 30 has a forward inclined front upper surface portion 31a forming the upper half portion thereof, and a front lower surface portion 31b inclined forward downward forming a substantially lower half portion of the front surface portion 31. As a whole, it has a concave curved shape on the rear side in a side view. That is, the front upper surface portion 31a is inclined from the front side to the rear side from the upper side to the lower side, and the front lower surface portion 31b is inclined from the rear side to the front side from the upper side to the lower side. It has a substantially horizontal "V" shape when viewed (see FIG. 6). The upper edge portion of the front upper surface portion 31a is located forward of the lower edge portion of the front lower surface portion 31b, and the upper end side of the front surface portion 31 protrudes forward from the lower end side.

The front surface portion 31 has a front lower surface portion 31b as a lower front surface portion 37 made of sheet metal. The lower front portion 37 is made of a metal member such as a steel plate. The front surface portion 31a of the front surface portion 31 serves as a front window portion 38 that is a transparent portion as a whole. The front window portion 38 is configured by fixing a rectangular upper transparent plate 39 made of glass, acrylic resin, polycarbonate resin, or the like to the upper side of the lower front portion 37 . The front upper surface portion 31 a is entirely formed of an upper transparent plate 39 .

The left side wall portion 33 of the cabin 30 is a portion that forms the left side portion of the cabin 30, and the lower portion is a lower side portion 41 that is a sheet metal portion made of steel plate or the like (see FIG. 5). The lower side surface portion 41 is provided in substantially the same range as the front lower surface portion 31b of the front surface portion 31 in the vertical direction. In the left side wall portion 33 , a linear left strut portion 42 is provided on the upper side of the lower side portion 41 so as to be located in the middle portion of the left side wall portion 33 in the front-rear direction and extend along the vertical direction.

A rectangular left rear window portion 43 is provided on the left side wall portion 33 on the rear side of the left support portion 42 . The left rear window portion 43 is formed by attaching a rectangular transparent plate 45 such as glass to a frame-shaped window frame portion 44 having the left support portion 42 as a front side portion in the upper portion of the lower side portion 41 . It is composed of The transparent plate 45 is rotatably supported by hinge portions 46 provided on both front and rear sides of the upper side portion of the window frame portion 44 so that the lower side thereof can be moved outward to open.

A left front window portion 47 is provided on the left side wall portion 33 in front of the left support portion 42 . The left front window portion 47 has a substantially inverted trapezoidal shape, and the front side portion is aligned with the forward inclination of the front upper surface portion 31 a of the front surface portion 31 . The left front window portion 47 is configured by attaching a transparent plate 48 such as glass to a front-open frame portion formed including the left support portion 42 on the front side of the left support portion 42 . The transparent plate 48 is provided so that the oblique side on the front side is aligned with the left side of the upper transparent plate 39 forming the front window portion 38, and forms a substantially right angle with the upper transparent plate 39 in plan cross-sectional view.

The right side wall portion 34 of the cabin 30 has a right front strut portion 49 erected on the front portion of the right side wall portion 34 and a right rear strut portion 50 erected on the rear portion of the right side wall portion 34 . The right front strut portion 49 has a lower portion 49a along the inclination of the front lower surface portion 31b of the front surface portion 31 as viewed from the side, and an upper portion 49b extending in the vertical direction. The right front column portion 49 is erected at a right front position of the floor portion 36 and is provided over substantially the entire vertical direction of the right side wall portion 34 .

The right rear strut part 50 is provided so as to be parallel to the upper part 49b extending in the vertical direction of the right front strut part 49 at substantially the same height position. The right rear strut portion 50 is erected at a front-rear middle portion of the right edge portion of the rear wall portion 32 which is provided in a front-downward sloping shape when viewed from the side. A door 51, which is an opening/closing door for getting on and off, is provided between the right front column portion 49 and the right rear column portion 50 and forms most of the right side wall portion 34. As shown in FIG.

The door 51 is rotatably supported by support portions 52 provided at two locations above and below the right rear strut portion 50 with the vertical direction as the direction of the rotation axis. The door 51 changes from the closed state to the outward open state from the front side so that the worker can get in and out of the cabin 30 . A seal member 51 a made of rubber or the like is provided along the outer shape of the door 51 along the entire periphery of the door 51 .

The door 51 has a substantially rectangular window frame portion 53 as a portion supported by the upper and lower support portions 52 at its upper portion. A substantially rectangular transparent plate 54 made of glass or the like is attached to the window frame portion 53 . The transparent plate 54 is rotatably supported by hinges 55 provided on both upper and lower sides of the rear side of the window frame 53 so that the front side can be moved outward to open. In this way, the upper portion of the door 51 is provided with a window portion 56 that can be opened and closed.

Almost the entire lower portion of the door 51 is formed by a transparent plate 57 such as glass provided below the transparent plate 54 . The door 51 is substantially entirely transparent with an upper transparent plate 54 and a lower transparent plate 57 . The door 51 has a lower portion where the transparent plate 57 is provided. It has a shape that follows the downward slope. A handle 58 is provided at a lower position on the front side of the lower portion of the door 51 .

Thus, in this embodiment, the right side wall portion 34 is the side wall portion of the cabin 30 provided with the door 51 for getting in and out of the cabin 30 . Moreover, the right side wall portion 34 is the side wall portion on the side where the outside air introduction cover 15 is located, among the left and right side wall portions of the cabin 30 .

A right front window portion 59 is provided on the right side wall portion 34 on the front side of the upper portion of the door 51 . The right front window portion 59 has a substantially inverted triangular shape, and the front side portion is aligned with the forward inclination of the front upper surface portion 31 a of the front surface portion 31 . The right front window portion 59 is configured by attaching a transparent plate 60 such as glass to a front-side open frame portion formed including the right front support portion 49 on the front side of the right front support portion 49 . The transparent plate 60 is provided so that the oblique side on the front side is aligned with the right side of the upper transparent plate 39 forming the front window portion 38 so as to form a substantially right angle with the upper transparent plate 39 in plan cross-sectional view.

The roof portion 35 of the cabin 30 has a substantially rectangular shape with the front-rear direction as the longitudinal direction in plan view. The roof portion 35 has a front edge protruding forward with respect to the upper end of the front surface portion 31 , and a rear edge of the roof portion 35 projecting rearward from the upper end of the rear wall portion 32 . It protrudes like a canopy on the side.

The floor section 36 of the cabin 30 forms a horizontal floor section 63 below and in front of the driver's seat 19 (see FIG. 9). A substantially horizontal seat support surface portion 65 is provided on the rear side of the floor surface portion 63 via an inclined surface portion 64 that descends forward. A driver's seat 19 is installed on the seat support surface portion 65 .

In the combine harvester 1 having the configuration described above, the outside air introduction cover 15 provided so as to form a part of the right side surface of the combine harvester 1 at the rear side of the cabin 30 is a front portion of the cabin when viewed from the side. 30 from the rear side in an inclined manner. Schematically, in a right side view, the outside air introduction cover 15 and the cabin 30 have vertically overlapping portions so as to form a boundary line A1 (see FIG. 4) that slopes forward downward. Details are as follows.

The rear wall portion 32 of the cabin 30 has a rearwardly inclined shape when viewed from the side. That is, the rear wall portion 32 as a whole is provided as a front-down (rear-up) inclined surface portion that extends from the lower side to the upper side from the front side to the rear side, and forms a rearwardly inclined shape in a side view. . As shown in FIG. 9, the rear wall portion 32 rises obliquely upward rearward from the rear side of the seat support surface portion 65, and the upper end portion connected to the roof portion 35 is positioned near the rear end portion of the roof portion 35. I am letting

In addition, the right side wall portion 34 of the cabin 30 provided with the door 51 has a rear-side edge inclined rearwardly in a side view. In the present embodiment, the right side wall portion 34 has a rearward edge in a side view so that the upper end is located near the rear edge portion of the roof portion 35 of the cabin 30 .

As shown in FIG. 6, in the door 51 forming most of the right side wall portion 34, the lower rear edge portion 51b formed by the transparent plate 57 extends along a straight line inclined forward and downward when viewed from the side. It is formed in an inclined shape. A rear edge portion of the right side wall portion 34 is formed in an inclined shape in a side view in such a manner that the edge portion 51b of the door 51 is extended upward.

The rear wall portion 32 of the cabin 30 follows the rear edge of the rear edge of the right side wall portion 34 in a rearward inclination when viewed from the side. When viewed from the side, it is tilted backwards. That is, the rear wall portion 32 is formed along the rear end portion of the right side wall portion 34 .

In the present embodiment, the rear edge portion of the right side wall portion 34 and the right edge portion of the rear wall portion 32 are formed by a common frame member 66, and the frame member 66 is the rear portion in the right side view. It extends obliquely. The lower end of the frame member 66 is positioned near the right rear corner of the floor 36, and substantially the entire portion above the lower end 66a along the substantially vertical direction is tilted backward in a side view. It is tilted. The frame member 66 has its upper end positioned at the rear end of the roof portion 35 .

Regarding a cabin that covers an operation part in a combine harvester, for example, in Patent Document 1, a window for rearward visibility is provided at the upper part behind a door for getting on and off arranged on the side wall of the cabin, and below the window, A configuration is disclosed in which an outside air intake is provided for taking in outside air.

In the configuration disclosed in Patent Document 1, the outside air intake communicates with the outside air circulation space provided in the rear part of the cabin, and the outside air flowing into the outside air circulation space from the outside air intake enters the outside air circulation space. It is used for the heat exchange of the condenser of the air conditioner installed on the side.

As in the configuration disclosed in Patent Document 1, according to the configuration in which the outside air intake is arranged below the window for rearward visibility provided in the rear upper part of the side wall of the cabin, the opening area of the outside air intake can be reduced. Therefore, it is difficult to ensure a sufficient size for the window for rearward visibility. This can be a cause of reduced visibility to the rear from inside the cabin.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and is capable of securing the opening area of the outside air intake provided in the rear part of the cabin and securing the area of the window for rearward visibility. To provide a combine harvester capable of obtaining good rearward visibility from inside a cabin.

Therefore, with respect to the cabin 30 having the rear wall portion 32 as described above, the outside air introduction cover 15 is provided so that at least a portion thereof is positioned below the rear wall portion 32 in a side view.

As shown in FIG. 4, the position B1 of the front end of the outside air introduction cover 15 is located forward of the position B2 of the rear end of the roof portion 35, which is the rear end of the cabin 30, in the front-rear direction. In addition, the outside air introduction cover 15 positioned on the rear side of the cabin 30 has its front edge along the rearward-slanting (forward-downward-sloping) edge on the rear side of the cabin 30 in the right side view. there is Therefore, in the right side view, a range B3 between position B1 and position B2 in the front-rear direction is an overlapping portion between the cabin 30 positioned above and the outside air introduction cover 15 positioned below.

As shown in FIG. 4, the outside air introduction cover 15 includes a front inclined side portion 15a, a front side portion 15b connected to the lower side of the inclined side portion 15a, and a front side portion 15b as a portion forming an outer shape in a side view. It has a lower side portion 15c connected to the lower side, an upper side portion 15d connected to the upper side of the inclined side portion 15a, and a rear side portion 15e connecting the rear sides of the lower side portion 15c and the upper side portion 15d.

The inclined side portion 15a is a portion that forms the upper portion of the front edge portion of the outside air introduction cover 15, and has substantially the same inclination angle with respect to the vertical direction as the intermediate portion 66b that forms the lower portion of the inclined portion of the frame member 66 when viewed from the right side. and is slanted. The front side portion 15b is a portion forming a front edge portion of the outside air introduction cover 15, and is formed in a substantially vertical shape.

The lower side portion 15c is a portion forming a lower edge portion of the outside air introduction cover 15, and is formed in a substantially horizontal shape. The upper side portion 15d is a portion forming an upper edge portion of the outside air introduction cover 15, and is gently inclined forward and downward. The upper side portion 15d has an inclined side portion 15f at the front end, which is steeper in the forward-downward direction than the inclination of the other rear side portion. The rear side portion 15e is a portion forming a rear edge portion of the outside air introduction cover 15, and is formed in a substantially vertical shape.

The outside air introduction cover 15 having such a side view outline is provided in a state in which the front inclined side portion 15a abuts the rear edge portion of the right side wall portion 34 of the cabin 30 from the rear side in the right side view. , forming a boundary portion 67 along the boundary line A1 with the cabin 30 (see FIG. 4). That is, the outside air introduction cover 15 is provided with the inclined side portion 15a close to the intermediate portion 66b of the frame member 66 so as to be parallel with a small gap therebetween. , forming a rearwardly inclined boundary portion 67 between. In this way, the outside air introduction cover 15 is arranged so that a part of the outside air introduction cover 15 and the rear wall portion 32 of the cabin 30 are aligned in a side view. In this embodiment, the outside air introduction cover 15 is arranged so that the inclined side portion 15a and the rear wall portion 32 are aligned in a side view.

When viewed from the right side, the inclination angle θ1 of the boundary line A1 with respect to the vertical direction is about 25°. However, this angle value is merely an example, and the magnitude of the inclination angle θ1 is not limited.

In addition, in the right side wall portion 34 of the cabin 30, a transmission window 70 is provided in a portion forming an upper portion of the rearwardly inclined rear edge portion. The transmission window 70 is provided so as to occupy substantially the entire portion of the right side wall portion 34 behind the right rear strut portion 50 . Further, the transmissive window 70 is provided in substantially the same range in the vertical direction as the window portion 56 formed by the transparent plate 54 provided on the upper portion of the door 51 forming the right side wall portion 34 .

The transmission window 70 is provided in a portion of the right side wall portion 34 of the cabin 30 located above the outside air introduction cover 15 in a side view. The transmissive window 70 is configured as a triangular window having a triangular shape with the lower side facing the vertex.

The transmission window 70 includes the right rear support section 50, the upper portion 66c of the frame member 66 located behind the right rear support section 50, and the horizontal shape provided between the upper ends of the right rear support section 50 and the frame member 66. A triangular transparent plate 72 made of glass or the like is fixed to a triangular window frame portion formed by a frame portion 71 of . The transparent plate 72 includes a vertical front side portion 72a along the right rear strut portion 50, a rear oblique side portion 72b along the upper portion 66c of the frame member 66, and between the upper ends of the front side portion 72a and the rear oblique side portion 72b. The horizontal upper side portion 72c forms a right-angled triangular shape with the lower side as the apex side (see FIG. 6).

Regarding the window frame portion of the transmissive window 70, the right rear strut portion 50 is positioned above the intermediate portion of the inclined side portion 15a of the outside air introduction cover 15 in the front-rear direction. In addition, the upper end of the frame member 66 is positioned above the front portion of the upper side portion 15d of the outside air introduction cover 15 in the front-rear direction. In this way, the range of formation of the transmissive window 70 is included in the position where the outside air introduction cover 15 is arranged in the front-rear direction, and the transmission window 70 is provided above the outside air introduction cover 15 in the right side view. there is

Regarding the positional relationship between the transmissive window 70 and the outside air introduction cover 15, the lower part of the transmissive window 70 and the upper part of the outside air introduction cover 15 face each other in the front-rear direction when viewed from the side.

As shown in FIG. 4 , the apex 70a, which is the lower end of the triangular transmission window 70, is positioned near the lower end of the right rear support pillar 50. As shown in FIG. The top portion 70a of the transmission window 70 is positioned immediately behind the lower support portion 52A of the upper and lower support portions 52 that support the door 51. As shown in FIG. The top portion 70a of the transmission window 70 is an acute-angled corner portion formed by the front side portion 72a and the rear oblique side portion 72b of the transparent plate 72. It corresponds to the corner formed by the lower end of the upper portion 66c.

In the transmissive window 70, the lower end portion forming the top portion 70a of the rear oblique side portion 72b of the transparent plate 72 is parallel to the upper end portion of the oblique side portion 15a of the outside air introduction cover 15 from the front side in the right side view. ing. That is, the transmissive window 70 is provided so that the rear side portion of the top portion 70 a is aligned with the upper end portion of the inclined side portion 15 a of the outside air introduction cover 15 when viewed from the right side.

The corner formed by (the inclined side 15f of) the inclined side 15a and the upper side 15d of the outside air introduction cover 15 is located near the rear side of the top 70a of the transmissive window 70 in the right side view. In this manner, the top portion 70a of the transmission window 70 and the upper end portion of the inclined side portion 15a of the outside air introduction cover 15 are separated from each other with the top portion 70a on the front side and the upper end portion of the inclined side portion 15a on the rear side. They face each other in the front-rear direction.

Further, regarding the layout of the transmission window 70, the transmission window 70 is provided in a slanted shape from the front side to the rear side in plan view so as to go from the left and right outer sides to the left and right inner sides.

As shown in FIGS. 8 and 10, the upper portion 66c of the frame member 66 forming the rear side of the window frame portion of the transmissive window 70 extends from the right side to the left and right inner sides, which is the left and right outer sides from the front side to the rear side in plan view. It is arranged in an inclined shape so as to go to the left side. That is, the frame member 66 includes a substantially vertical lower end portion 66a and an intermediate portion which is a portion bent with respect to the lower end portion 66a and extends rearward and obliquely upward along a vertical plane extending in the front-rear direction from the upper side of the lower end portion 66a. It has a portion 66b and an upper portion 66c which is a portion bent with respect to the intermediate portion 66b and extending from the upper side of the intermediate portion 66b toward the rear left and obliquely upward.

In the frame member 66, the lower end portion 66a and the intermediate portion 66b share the same horizontal position, and the upper portion 66c, which is the portion above the intermediate portion 66b, is slanted to the rear left so as to be inclined in side view and plan view. placed above. A bent portion (corner portion) formed by the intermediate portion 66b and the upper portion 66c of the frame member 66 is located near the lower end portion of the right rear support portion 50. An acute-angled frame portion forming a top portion 70a of the transmission window 70 is formed by the lower end portion.

In this manner, the transparent plate 72 is attached to the window frame portion which is arranged in a slanted manner in a manner bent left and right inward with respect to the front-rear direction in a plan view, thereby forming the transmission window 70 which is slanted in a plan view. It is That is, the transmissive window 70 is provided to face the interior of the cabin 30 obliquely rearward to the right in a plan view, and the transparent portion allows the outside to be visually recognized.

As shown in FIG. 10, in plan view, the inclination angle θ2 of the transparent plate 72 with respect to the front-rear direction is about 30°. However, this angle value is merely an example, and the magnitude of the inclination angle θ2 is not limited.

As shown in FIG. 4, an upper cover portion 75 located behind the transmissive window 70 in a side view is provided on the upper side of the outside air introduction cover 15 . The upper cover portion 75 is a plate-like cover portion, and is provided so as to form a right side surface flush with the outside air introduction cover 15 . The upper cover portion 75 is provided in a state of being fixed to a predetermined frame portion or the like. The upper cover portion 75 has an external shape in which the tapered shape formed by the inclined side portion 15a and the rear side portion 15e of the outside air introduction cover 15 is extended upward in a right side view, and is integrated with the outside air introduction cover 15. It has a side view outline that forms a

The upper cover portion 75 includes, as parts forming an outer shape in a side view, a front inclined side portion 75a, a lower side portion 75b connected to the lower side of the inclined side portion 75a, an upper side portion 75c connected to the upper side of the inclined side portion 75a, and a rear side portion 75d connecting the rear sides of the lower side portion 75b and the upper side portion 75c. Due to these side portions, the upper cover portion 75 has a substantially trapezoidal outer shape when viewed from the side.

The inclined side portion 75a is a portion forming a front edge portion of the upper cover portion 75, and is inclined along the upper extension line of the straight line along which the inclined side portion 15a of the outside air introduction cover 15 extends when viewed from the right side. there is In other words, the inclined side portion 75a is inclined at substantially the same inclination angle as the inclined side portion 15a of the outside air introduction cover 15 .

The lower side portion 75b is a portion forming the lower edge portion of the upper cover portion 75, and most of it except for the front end side is attached to the upper side portion 15d of the outside air introduction cover 15 with a slight gap therebetween. are in line. That is, the lower side portion 75b is inclined at substantially the same inclination angle as the portion of the upper side portion 15d of the outside air introduction cover 15 excluding the inclined side portion 15f.

The upper side portion 75c is a portion forming an upper edge portion of the upper cover portion 75 and is formed substantially horizontally. The rear side portion 75d is a portion forming a rear side edge portion of the upper cover portion 75, and is formed in a substantially vertical shape. The rear side portion 75d is positioned substantially on the same straight line as the rear side portion 15e of the outside air introduction cover 15 in the right side view.

The upper cover portion 75 having such a side view outline is provided in a state where the front inclined side portion 75a abuts the rear side edge portion of the transmission window 70 from the rear side in the right side view, and the outside air Together with the introduction cover 15, a boundary portion 67 along the boundary line A1 is formed with the cabin 30 (see FIG. 4). That is, the upper cover portion 75 is provided with the inclined side portion 75a close to the upper portion 66c of the frame member 66 so as to be parallel with a small gap therebetween. It forms a rearwardly inclined boundary portion 67 between them.

Further, the upper cover portion 75 is provided in an inclined shape so as to expose the transmissive window 70 when viewed from the rear. Specifically, as shown in FIG. 7 , the upper cover portion 75 as a whole is provided in a slanted shape so that the upper side is located on the inner side (left side) with respect to the lower side.

The outside air introduction cover 15 provided on the lower side of the upper cover portion 75 is provided so as to be positioned substantially at the same position as the transmissive window 70 in the left-right direction. With respect to the outside air introduction cover 15, the upper cover part 75 is positioned such that the lower side thereof is positioned at substantially the same position as the outside air introduction cover 15 in the left-right direction, and is directed obliquely upward to the left from the lower side to the upper side in a rear view. inclined to

Since the upper cover portion 75 is provided in a slanted shape in this way, the upper cover portion 75 escapes to the left and right inner sides of the transmissive window 70 in a rear view, and the upper and left and right outer sides (right sides) of the transmissive window 70 are arranged. is exposed.

As shown in FIG. 7, in a rear view, the inclination angle θ3 of the upper cover portion 75 with respect to the vertical direction is about 20°. However, this angle value is merely an example, and the magnitude of the inclination angle θ3 is not limited. In addition, the inclination angle θ3 of the upper cover portion 75 is an angle with respect to the planar outer surface 75s that the upper cover portion 75 has as the left and right outer surfaces.

Further, as shown in FIG. 11, the upper cover portion 75 has a front inclined surface portion 76 formed by bending the front portion of the main body portion 75X, which forms a large portion of the rear side, inwardly and horizontally. The front portion of the transmission window 70 is further left inwardly to the left and right. The front inclined surface portion 76 is formed by bending the main body portion 75X of the upper cover portion 75 so as to form a ridgeline portion 76a parallel to the inclined side portion 75a together with the main body portion 75X.

That is, the ridgeline portion 76a of the upper cover portion 75 is inclined forward and downward when viewed from the right side (see FIG. 4). It is slanted so that it is positioned inward on the left and right (see FIG. 11). The front inclined surface portion 76 is a plate-like portion that has a rearwardly inclined parallelogram shape when viewed from the right side.

As shown in FIG. 13, the cabin 30 includes an air conditioner 80 that performs cooling and heating operation for the room of the cabin 30. The air conditioner 80 is operated by an air conditioning operation section provided in the operation section 12 . The air conditioning operation unit includes, for example, a switch for turning on/off the air conditioner 80, a dial for adjusting the set temperature, and the like.

The air conditioner 80 includes a condenser unit 81 as a so-called outdoor unit and an air conditioner unit 82 as a so-called indoor unit. The condenser unit 81 is provided on the rear wall portion 32 of the cabin 30 . The air conditioner unit 82 is provided inside the roof portion 35 of the cabin 30 .

The condenser unit 81 has a condenser 83 and a fan 84 that is a cooling fan that sends air for heat exchange to the condenser 83 . The condenser 83 includes, for example, pipes for refrigerant circulation that are arranged in a multistage folded shape.

As shown in FIG. 13, the fan 84 is an electric fan having a fan main body 85 and an electric fan motor 86 as a driving source for driving the fan main body 85 . A drive shaft of a fan motor 86 is connected to the rotation shaft of the fan main body 85 . The fan 84 is configured so that the driving force of the fan motor 86 can rotate the fan main body 85 in both the forward rotation direction and the reverse rotation direction.

The capacitor unit 81 is configured to have a thick plate-like outer shape having a substantially square shape, and is arranged vertically on the rear wall portion 32 of the cabin 30 with the front-rear direction as the plate thickness direction. . In the capacitor unit 81 , a capacitor 83 is arranged on the front side, and a fan 84 is attached so as to overlap the capacitor 83 on the rear side. The capacitor unit 81 is provided in such a manner that the front portion of the capacitor 83 is embedded in the rear wall portion 32 of the cabin 30 .

Thus, the combine 1 has the condenser 83 of the air conditioner 80 arranged on the rear side of the cabin 30 . The condenser 83 is arranged below the rear wall portion 32 of the cabin 30 . That is, the capacitor 83 is provided on the rear wall portion 32 at a lower position in the vertical direction, and arranged below the rear wall portion 32 .

In the rear wall portion 32 of the cabin 30, the portion above the portion where the capacitor unit 81 is arranged forms an upper slope portion 32a along the slope of the boundary portion 67 in a side view. The upper slope portion 32 a is a surface portion that has a horizontally long rectangular shape when viewed from the rear, and forms a rear portion that rises rearward in the upper portion of the rear side of the cabin 30 . The capacitor unit 81 is provided so as to be positioned in the middle portion of the rear wall portion 32 in the left-right direction.

A rear window portion 90 is provided on the upper slope portion 32a above the condenser 83 in the rear wall portion 32 of the cabin 30 . The rear window portion 90 is provided as a laterally long rectangular window portion, and is provided over most of the upper slope portion 32a except for the peripheral portion.

The rear window portion 90 is configured by fixing a substantially rectangular transparent plate 91 made of glass or the like to a penetrating opening formed in the upper slope portion 32a. The rear window portion 90 is provided so as to face rearward with respect to the interior of the cabin 30, and the outside can be visually recognized as a transparent portion.

Thus, in the cabin 30 , the rear window portion 90 is provided on the rear wall portion 32 . In the rear wall portion 32 , the capacitor 83 of the capacitor unit 81 is provided below the rear window portion 90 .

The air conditioner unit 82 has a heat exchanger 95 including an evaporator, a heater, etc., and a blower fan 96 that blows air to the heat exchanger 95 . The heat exchanger 95 and the blower fan 96 are provided in communication with each other. The heat exchanger 95 and the blower fan 96 are arranged side by side in the rear portion of the roof portion 35 with the blower fan 96 on the left side and the heat exchanger 95 on the right side. The air conditioner unit 82 is provided above the condenser unit 81 within the roof portion 35 .

The roof portion 35 has a flat outer shape and is hollow. The roof portion 35 has a lower panel portion 97, which is a frame portion forming the body portion of the roof portion 35, and an upper panel portion 98, which is provided above the lower panel portion 97 and forms an upper surface portion of the cabin 30. , and these panel portions form a hollow portion. The upper panel portion 98 is a cover portion provided to cover the entire lower panel portion 97 from the upper side and the left and right sides.

The lower panel portion 97 includes a lower panel main body portion 97a facing the upper surface portion of the upper panel portion 98, a peripheral wall portion 97b formed along the peripheral edge of the lower panel main body portion 97a, and an upper edge of the peripheral wall portion 97b. and a flange portion 97c formed along the edge. An air conditioner housing portion 99 for housing the air conditioner unit 82 is provided in the rear portion of the hollow portion of the roof portion 35 .

Contrary to the upper panel portion 98 having a flat upper surface, the rear portion of the lower panel portion 97 is formed with a recessed portion 97d protruding downward. The lower panel portion 97 partially expands the vertical dimension between the lower panel portion 97 and the upper panel portion 98 by the recessed portion 97d, thereby forming an air conditioner accommodating portion 99 between the lower panel portion 97 and the upper panel portion 98. As shown in FIG. The upper end of the upper slope portion 32a of the rear wall portion 32 is connected to the front-rear middle portion of the lower side of the concave portion 97d.

As shown in FIG. 13, a coolant supply channel 101 and a coolant return channel 102 are provided between the condenser 83 and the heat exchanger 95 . One end of the coolant supply channel 101 is connected to one end of a pipe for coolant flow in the condenser 83 , and the other end is communicated to one end of the coolant channel in the heat exchanger 95 . ing. One end of the refrigerant return flow path 102 communicates with the other end of the refrigerant flow pipe in the condenser 83 , and the other end communicates with the other end of the refrigerant flow path in the heat exchanger 95 . I am connecting. These flow paths are composed of piping members such as hoses, connection fittings, and the like.

A receiver 103 for filtering and drying the refrigerant is provided in the refrigerant supply channel 101 . A compressor 104 is provided in the refrigerant return channel 102 . The compressor 104 is connected to the engine 11 and driven by power transmission from the engine 11 .

As shown in FIG. 12 , in the roof portion 35 , an air duct 105 is provided in front of the air conditioner unit 82 for sending air for air conditioning obtained by the air conditioner unit 82 into the interior of the cabin 30 . . As the air for air conditioning, cool air or the like generated by the evaporator of the heat exchanger 95 is forced through the air duct 105 by the compressor 104 and blown out from the outlet 106 provided inside the cabin 30 . The fan duct 105 bifurcates into left and right branch duct portions 105 a from a rear base portion, and each branch duct portion 105 a communicates with an air outlet 106 provided on the lower side of the front portion of the roof portion 35 . there is

As shown in FIG. 6, an outside air intake port 110 for taking outside air into the condenser 83 is provided at a position below the transmissive window 70 in side view. The outside air intake 110 is a portion of the rear wall portion 32 of the cabin 30 in which an outside air circulation space 111 formed to face the front side of the condenser 83 is opened to the right. The outside air circulation space portion 111 is a space portion through which the outside air is circulated from the right side of the cabin 30 .

The outside air circulation space portion 111 is formed in the upper and lower intermediate portions of the rear wall portion 32 of the cabin 30 . The outside air circulation space portion 111 includes a substantially vertical front wall portion 112 forming a portion of the interior side of the cabin 30 in the rear wall portion 32, and a substantially vertical front wall portion 112 on the rear side of the front wall portion 112 in parallel with the front wall portion 112. It is a flat space portion formed by the provided rear wall portion 113 and the left and right side portions and bottom portion.

The outside air circulation space part 111 has an upper front part located in front of an imaginary plane along which the boundary line A1 extends when viewed from the right side. The condenser 83 is provided so as to pass through the rear wall portion 113 forming the outside air circulation space portion 111 , and the front portion is located inside the outside air circulation space portion 111 . An opening for mounting the capacitor 83 is formed in the rear wall portion 113 .

The outside air intake 110 is provided as a vertically long opening on the right side surface 114 of the outside air circulation space 111 so that the lower half of the opening is entirely open. An outside air introduction cover 15 is positioned to the right of the outside air intake 110 (see FIG. 4).

An outside air intake port 110 is provided at a position overlapping the outside air introduction cover 15 in a side view. That is, in the right side view, the outside air intake 110 is entirely or substantially entirely covered with the outside air introduction cover 15 . In this embodiment, an outside air intake port 110 is provided at a position overlapping the upper part of the outside air introduction cover 15 in side view. Specifically, in the right side view, the outside air intake port 110 is positioned near the corner portion between the inclined side portion 15a and the upper side portion 15d.

A guide surface portion 115 that expands outward (to the right) from the outside air intake 110 is provided on the rear and lower sides around the outside air intake 110 . A dustproof member such as a mesh member may be attached to the outside air intake 110 .

In such a configuration, as shown in FIG. 13, outside air is taken into the outside air circulation space 111 from the outside air intake port 110 by the suction force of the forward rotating fan 84 (see arrow C1). The outside air taken into the outside air circulation space 111 passes through the condenser 83 while exchanging heat in the condenser 83, and is discharged to the rear of the cabin 30 as exhaust (see arrow C2). On the other hand, when the fan 84 rotates in the reverse direction, outside air is drawn into the outside air circulation space 111 from the fan 84 through the condenser 83 and discharged to the outside through the outside air intake 110 .

In addition, in a configuration in which an air-conditioning unit 82 for air-conditioning the interior of the cabin 30 is provided in the roof portion 35 of the cabin 30, an outside air introduction portion for taking outside air into the air-conditioning unit 82 is provided below the roof portion 35. An outside air introduction duct 120 is provided.

The outside air introduction duct 120 constitutes an outside air introduction path 121 for taking outside air into the air conditioner unit 82 (see FIG. 15). The outside air introduction path 121 is an air flow path for introducing the outside air outside the cabin 30 into the air conditioner housing portion 99 in the roof portion 35 which is the installation space for the air conditioner unit 82 .

As shown in FIGS. 14 and 15 , the outside air introduction duct 120 is provided at the rear left corner of the cabin 30 as a duct forming part extending in the vertical direction. forming The external air introduction duct 120 has a substantially square cylindrical outer shape so as to form a substantially rectangular shape whose longitudinal direction is the front-rear direction in plan cross-sectional view.

The outside air introduction duct 120 is arranged on the rear side of the left side wall portion 33 of the cabin 30 so as to form a side surface flush with the left side wall portion 33 and protrude rearward with respect to the rear wall portion 32. is provided in Thus, the outside air introduction duct 120 is provided on the left side, which is one side of the rear side of the cabin 30 .

The outside air introduction duct 120 opens the lower side, which is the upstream side of the outside air introduction path 121 , to the outside of the cabin 30 . In addition, the outside air introduction duct 120 allows the upper side, which is the downstream side of the outside air introduction path 121, to communicate with the inside of the air conditioner housing portion 99 in the roof portion 35 via a shutter portion 125 that can be opened and closed.

The air conditioner unit 82 is configured such that the operation mode can be switched between an outside air introduction mode in which outside air is introduced through the outside air introduction duct 120 and an inside air circulation mode in which inside air is circulated inside the cabin 30 by opening and closing the shutter part 125. It is Regarding the inside air circulation mode, an inside air inlet 123 into which the inside air of the cabin 30 flows is provided in front of the air conditioner unit 82 (see FIG. 9). The inside air inlet 123 is provided in the wall surface portion on the front side of the recessed portion 97 d of the lower panel portion 97 that constitutes the roof portion 35 .

The outside air introduction duct 120 has a left side surface portion 131, a right side surface portion 132, a front surface portion 133, a rear surface portion 134, a top surface portion 135, and a bottom surface portion 136 as surface portions forming the outside air introduction path 121. The outside air introduction duct 120 is provided such that the left side surface portion 131 is positioned substantially on the same plane as the outer surface portion of the left side wall portion 33 of the cabin 30 .

In addition, the outside air introduction duct 120 has the right side surface portion 132 , which is the left and right inner side surface portion, positioned rearward with respect to the rear wall portion 32 of the cabin 30 . That is, the right side surface portion 132 of the outside air introduction duct 120 and the vertical wall portion of the portion of the rear wall portion 32 where the capacitor unit 81 is arranged form a right angle in plan cross-sectional view. It is provided in a manner in which it rises from the part toward the rear.

On the lower side of the outside air introduction duct 120, the upstream end of the outside air introduction passage 121 is positioned at the height of the lower end of the vertical wall portion of the rear wall portion 32 where the capacitor unit 81 is arranged. I am letting The outside air introduction duct 120 extends on the upper side so that the downstream end of the outside air introduction passage 121 is positioned on the left side of the rear end of the roof portion 35 . That is, the outside air introduction duct 120 is provided vertically in a range from a position near the lower end of the capacitor unit 81 to a position on the left side of the roof portion 35 in the vertical direction.

The outside air introduction duct 120 has an intake port 138 for taking in outside air as an outside air introduction port. The intake port 138 is formed at the lower end of the right side portion 132 of the outside air introduction duct 120 . The intake port 138 is an opening penetrating the right side surface portion 132, which is a plate-like portion, and opens the external air introduction path 121 to the outside.

The intake port 138 has an opening shape that follows the outer shape of the lower part of the outside air introduction duct 120 when viewed from the side, and is formed in a substantially rectangular shape whose longitudinal direction is the vertical direction. Thus, in outside air introduction duct 120 , intake port 138 is provided so as to open toward the inside in the left-right direction of cabin 30 .

Regarding the arrangement of the intake port 138 of the outside air introduction duct 120, the combine harvester 1 has the following configuration. That is, the combine 1 is arranged on the rear side of the cabin 30 and includes a condenser unit 81 of an air conditioner 80 having a fan 84 . An air intake port 138 of the outside air introduction duct 120 is provided so as to open toward the exhaust air path side of the fan 84 .

The air exhaust path by the fan 84 is the space on the rear side of the condenser unit 81, which is the space on the rear side of the cabin 30 where the fan 84 is installed on the rear wall portion 32 (see arrow C2 in FIG. 13). Therefore, with respect to the external air introduction duct 120 provided on the left edge of the rear wall portion 32, the air exhaust path by the fan 84 is the space on the right side. The intake port 138 is formed at the lower portion of the right side surface portion 132 facing the right side of the outside air introduction duct 120 .

The flow path configuration of the outside air introduction path 121 inside the outside air introduction duct 120 will be described using FIG. A guide slope 140 is formed on the bottom surface portion 136 of the outside air introduction duct 120 to guide the outside air taken in from the intake port 138 upward. The guide slope 140 is an inclined surface that descends from the left side to the right side.

A partition wall 141 is provided in the outside air introduction duct 120 to divide the internal space of the outside air introduction duct 120 into the lower left side and the upper right side. The partition wall 141 has a vertical wall portion 142 whose plate thickness direction is the left-right direction, and a lower wall portion 143 that is bent at right angles from the lower end portion of the vertical wall portion 142 toward the left-right inner side (right side). , and these walls form a substantially vertically long "L" shape when viewed from the rear.

The partition wall 141 connects the upper side of the vertical wall portion 142 to the upper surface portion 135 of the outside air introduction duct 120 , and connects the right side of the lower wall portion 143 to the right side portion 132 of the outside air introduction duct 120 . The partition wall 141 has the vertical wall portion 142 located in the left-right middle portion of the internal space of the outside air introduction duct 120 . The partition wall 141 positions the lower wall portion 143 above the intake port 138 in the lower portion of the outside air introduction duct 120 .

By the partition wall 141, the outside air introduction path 121 is divided into a lower outer flow passage portion 121a which is a space portion on the left side of the vertical wall portion 142 and the lower side of the lower wall portion 143, and a space portion on the right side of the vertical wall portion 142 and the lower wall portion 143. It is partitioned into an upper inner channel portion 121b which is an upper space portion.

The lower outer passage portion 121a communicates with the outside of the external air introducing duct 120 through an air intake port 138 at its lower portion. The upper inner channel portion 121b communicates with the inside of the air conditioner accommodating portion 99 via the shutter portion 125 at the upper portion. In the lower panel portion 97 forming the air conditioner housing portion 99, an opening portion 97e is formed in the left rear portion of the peripheral wall portion 97b for communicating the inside of the outside air introduction duct 120 and the inside of the air conditioner housing portion 99. The opening 97e is opened and closed by the shutter section 125. As shown in FIG.

The outside air introduction duct 120 is provided with a filter 150 for cleaning the air. Filter 150 is provided inside outside air introduction duct 120 . 15, in addition to the filter 150 provided inside the outside air introduction duct 120, the filter 150 taken out from the outside air introduction duct 120 is shown inside the dashed line ellipse D1 for convenience.

The filter 150 is detachably attached to the vertical wall portion 142 of the partition wall 141 . The filter 150 has an elongated rectangular thick plate-like outer shape, and is mounted on the vertical wall portion 142 with the plate thickness direction as the horizontal direction and the longitudinal direction as the vertical direction. The filter 150 has a length of approximately 1/3 of the overall length of the outside air introduction duct 120 in the vertical direction, and is provided in the middle portion of the outside air introduction duct 120 .

The filter 150 has a flange portion 152 protruding like a flange along the rectangular outer shape on one side in the plate thickness direction with respect to the main body portion 151 . On the other hand, the vertical wall portion 142 is formed with a mounting hole portion 142 a corresponding to the outer shape of the body portion 151 of the filter 150 .

The filter 150 is attached to the vertical wall portion 142 from the left side, i.e., the left and right outer sides, with the main body portion 151 inserted into the attachment hole portion 142a. The filter 150 is provided so as to pass through the vertical wall portion 142 in the plate thickness direction through the mounting hole portion 142a. When the filter 150 is attached to the vertical wall portion 142, the flange portion 152, which is an enlarged portion for the mounting hole portion 142a, serves as a locking portion for the rightward movement of the filter 150 with respect to the vertical wall portion 142. FIG.

The filter 150 acts on air passing from the flange portion 152 side to the main body portion 151 side in the plate thickness direction of its outer shape. Therefore, the filter 150 acts on air flowing in a direction penetrating the vertical wall portion 142 from the left-right outer side (left side) to the right-left inner side (right side).

According to the flow path configuration of the outside air introduction path 121 as described above, the following flow of outside air is obtained. That is, as shown in FIG. 15, outside air that has flowed in from the intake port 138 is guided upward by the guide slope 140 and flows upward through the lower outer flow path portion 121a (see arrow E1). Outside air in the lower outer flow passage portion 121a passes through the filter 150 at the upper portion of the lower outer flow passage portion 121a, flows into the upper inner flow passage portion 121b (see arrow E2), and is guided upward (see arrow E3). ). Then, in the state where the shutter part 125 is opened, the air flows into the air conditioner accommodating part 99 through the opening part 97e (see arrow E4).

The configuration of the shutter section 125 will be described using FIG. The shutter part 125 has a shutter body 160 which is a plate-shaped member. Close 97e.

The opening 97e has a horizontally long, substantially rectangular opening shape. The shutter body 160 has an outer dimension one size larger than the opening dimension of the opening 97e, and closes the entire opening 97e from the inside of the peripheral wall 97b. A frame-shaped sealing portion 161 made of an elastic material such as rubber is provided on the outer surface of the shutter main body 160 on the side facing the peripheral wall portion 97b, along the opening shape of the opening portion 97e.

The shutter body 160 is provided on both front and rear sides of a horizontal mounting plate 162 which is fixed to the lower surface of the recessed portion 97d of the lower panel portion 97 by fixing bolts 164 or the like. It is rotatably supported by the hinge portion 163 with the front-rear direction as the rotation axis direction. The hinge portion 163 connects and supports the lower end portion of the shutter body 160 to the left end portion of the mounting plate 162 .

The shutter main body 160 closes the opening 97e with the front and rear hinges 163 and rotates from a vertically closed state along the peripheral wall 97b to a rightward open state. (see FIG. 15, arrow F1).

The shutter section 125 has a motor 165 as a drive source for opening and closing operations. The driving force of the motor 165 causes the shutter body 160 to open and close. The motor 165 is provided on the rear side of the support wall portion 162b provided on the rear portion of the mounting plate 162. As shown in FIG. The support wall portion 162b is a portion that is bent vertically with respect to the horizontal main body portion 162a of the mounting plate 162 so that the front-rear direction is the plate thickness direction. The motor 165 is fixed to the support wall portion 162b at a plurality of locations by fasteners such as bolts.

The motor 165 has a drive arm 166 connected to the motor drive shaft on the front side. The drive arm 166 is connected to the shutter main body 160 via the operation arm 167 . The supporting wall portion 162b of the mounting plate 162 is formed with a curved concave portion 162c for avoiding interference with the driving arm 166. As shown in FIG.

The operating arm 167 is a linear member, and one end thereof is connected to and supported by a connecting shaft 168 so as to be rotatable with respect to the tip of the drive arm 166 with the front-rear direction as the rotation axis direction. The other end of the operation arm 167 rotates with respect to the protrusion 169a of the L-shaped fitting 169 fixed to the rear end of the shutter body 160 by the connecting shaft 170 with the front-rear direction as the rotation axis direction. It is connected and supported as much as possible.

In the shutter unit 125 having the above configuration, the operation arm 167 moves to push and pull the shutter main body 160 as the driving arm 166 is rotated by driving the motor 165 to open and close the shutter main body 160. Action is taken (see FIG. 15, arrow F1).

The opening 97e is opened by the shutter body 160, and the shutter 125 is opened from the closed state. switches to outside air introduction mode. On the other hand, the opening 97 e is closed by the shutter body 160 and the shutter 125 is changed from the open state to the closed state. switches to shy air circulation mode.

The opening and closing of the shutter section 125 is switched by operating a predetermined operation section provided in the operation section 12 . This operation unit is an operation unit for switching the operation mode of the air conditioner 80, and is an operation unit for switching the air conditioning unit 82 between introducing outside air and circulating inside air. The operation mode switching operation unit has, for example, operation tools such as buttons and switches, and is connected to the motor 165 via a control unit (not shown). The control unit receives an input of an operation signal generated by operating the operation mode switching operation unit, outputs a control signal based on the operation signal to the motor 165, and operates the motor 165 to open and close the shutter body 160. .

The outside air introduction duct 120 also has a window 180 for maintenance of the filter 150 . The window portion 180 is provided on the left side portion 131 of the outside air introduction duct 120 . The window portion 180 has an opening/closing door 181 for opening and closing the maintenance opening portion 131 a formed in the left side portion 131 .

The maintenance opening 131a is opened to a size that allows attachment and detachment of the filter 150 from the left side 131 side. The maintenance opening 131a has a vertically long rectangular opening shape along the outer shape of the filter 150, and is formed so as to include the entire filter 150 within the opening range when viewed from the left side.

The opening/closing door 181 has an outer dimension one size larger than the opening dimension of the maintenance opening 131a, and is provided so as to block the entire maintenance opening 131a from the outside (left side) of the left side surface 131. The opening/closing door 181 is provided so as to form a part of the left side portion 131 in the closed state.

The opening/closing door 181 is rotatably supported with respect to the left side portion 131 by hinge portions 182 provided on both upper and lower sides of the edge portion on the rear side, with the vertical direction as the rotation axis direction. In other words, the opening/closing door 181 is provided so as to open from the front side with the rear side as the fulcrum of rotation. The hinge portion 182 is fixed to the corner formed by the left side portion 131 and the rear portion 134 .

The closed state of the open/close door 181 is fixed by a lock portion 183 provided in the upper and lower central portion on the front side of the open/close door 181 . The lock portion 183 is, for example, a clasp such as a snap lock, and is configured to be easily locked and unlocked by manual operation.

Further, a pressing portion 184 for pressing the filter 150 is provided inside the opening/closing door 181 (see FIG. 15). The pressing portion 184 has a pressing surface 184a that presses the filter 150 from the outside (left side). The pressing portion 184 includes a pressing surface portion 184b, which is a plate-like portion that forms a pressing surface 184a, and a plurality of supporting leg portions 184c that support the pressing surface portion 184b at positions spaced apart from the rear surface of the opening/closing door 181 by a predetermined distance. and is fixed to the back side of the opening/closing door 181 .

According to the pressing portion 184, the filter 150 is pressed from the outside by closing the opening/closing door 181 and locking the locking portion 183, and the filter 150 is attached in a state of being fitted into the vertical wall portion 142. state is preserved. That is, by locking the opening/closing door 181, the flange portion 152 of the filter 150 is sandwiched between the vertical wall portion 142 and the pressing portion 184, and the filter 150 is sandwiched.

As described above, in the outside air introduction duct 120, the filter 150 is provided with the window portion 180 for maintenance. The window portion 180 is provided so as to open toward the left side, which is the outer side in the left-right direction of the cabin 30 .

Regarding the arrangement of the air conditioner unit 82 inside the roof portion 35 , the blower fan 96 is arranged on the outside air introduction duct 120 side with respect to the heat exchanger 95 . In this embodiment, the outside air introduction duct 120 is provided so as to communicate with the air conditioner housing portion 99 in the roof portion 35 via a shutter portion 125 provided on the left side portion of the rear end portion of the roof portion 35 . ing. In such a configuration, the blower fan 96 is located on the left side of the heat exchanger 95 and provided on the outside air introduction duct 120 side.

That is, the blower fan 96 is provided between the communicating portion of the outside air introduction duct 120 to the interior of the roof portion 35 and the heat exchanger 95 . The blower fan 96 is provided at a position near the shutter section 125 so as to face the shutter main body 160 of the shutter section 125 .

According to the combine harvester 1 according to the present embodiment having the configuration described above, the following effects can be obtained.

According to the combine 1 according to the present embodiment, it is possible to secure the opening area of the outside air intake 110 provided in the rear part of the cabin 30, and secure the area of the transmission window 70, which is the window for rearward visibility. Therefore, good rearward visibility from inside the cabin 30 can be obtained.

In the cabin 30 according to the present embodiment, the rear wall portion 32 of the cabin 30 is tilted rearward when viewed from the side, and the outside air introduction cover 15 has a large portion of the front side below the rear wall portion 32 when viewed from the right side. It is provided so that it can be positioned. With such a configuration, it is possible to effectively utilize the space behind the cabin 30 .

Therefore, it is possible to widen the installation space of the transmissive window 70 while ensuring the opening area of the outside air intake 110, so that the rearward visibility of the transmissive window 70 can be improved. By ensuring a sufficient opening area for the outside air intake 110, the cooling efficiency of the condenser 83 can be improved.

In addition, a transmission window 70 is provided in a portion of the right side wall portion 34 of the cabin 30 located above the outside air introduction cover 15 . According to such a configuration, the space behind the cabin 30 can be effectively used to secure the opening area of the outside air intake 110, and the rearward visibility from inside the cabin 30 can be effectively improved. be able to.

In addition, the combine 1 of this embodiment is configured such that the lower portion of the inverted triangular transmission window 70 and the upper portion of the outside air introduction cover 15 overlap in the front-rear direction. According to such a configuration, visibility can be improved by the transmissive window 70, and in addition, a large opening area of the outside air intake port 110 can be ensured, and cooling efficiency can be effectively improved.

For example, if the transmission window 70 is a rectangular window portion, the installation space of the outside air intake 110 is pressed from above by the transmission window 70 . Therefore, by forming the transmissive window 70 into an inverted triangular shape so as to overlap the upper portion of the outside air introduction cover 15, it is possible to easily secure the arrangement space of the outside air intake 110. FIG.

A condenser 83 is arranged on the rear wall portion 32 of the cabin 30, and an outside air intake 110 is provided at a position below the transmission window 70 in a right side view and at a position overlapping the outside air introduction cover 15. there is With such a configuration, the visibility of the transmission window 70 can be improved, and the opening area of the outside air intake port 110 for taking in the outside air to the condenser 83 can be ensured to be large. can effectively improve the cooling efficiency of

In addition, the transmission window 70 is provided in a slanted shape from the front side to the rear side in plan view so as to go from the left and right outer sides to the left and right inner sides. According to such a configuration, it is possible to improve rearward visibility through the transmission window 70 from inside the cabin 30 . Specifically, for example, when the grains are discharged from the discharge auger 9 in a state of turning so that the discharge port 9a is positioned at the rear, the visibility of the discharge port 9a from inside the cabin 30 can be easily ensured. can be done.

Further, the upper cover portion 75 provided on the upper side of the outside air introduction cover 15 is provided in an inclined shape so as to expose the transmissive window 70 when viewed from the rear. According to such a configuration, since the exposed area of the transmission window 70 can be increased in the rear view, the rearward visibility of the transmission window 70 from inside the cabin 30 can be effectively improved.

In the cabin 30 according to the present embodiment, the right side wall portion 34 of the cabin 30 has a rearward sloping edge portion in a right side view, and the rear wall portion 32 of the cabin 30 has a rearward sloping shape. It is formed along the rear end. According to such a configuration, it is possible to secure a living space in the cabin 30 and effectively utilize the space behind the cabin 30 .

A condenser 83 is provided on the lower side of the rear wall portion 32 of the cabin 30 . That is, the capacitor 83 is provided in the space below the rear wall portion 32 which is configured in a rearwardly inclined shape. According to such a configuration, it is possible to secure a living space in the cabin 30, and to use the space on the rear side of the cabin 30 to compactly house the air conditioner unit 82 including the condenser 83 of the air conditioner 80. It becomes possible.

A rear window portion 90, which is a transparent window, is provided on the rear wall portion 32 of the cabin 30 that is configured to tilt backward. According to such a configuration, since the rear window portion 90 is provided so as to form a rearwardly inclined surface along the inclination of the rear wall portion 32 , dust adheres to the outer surface of the rear window portion 90 . can be suppressed. Thereby, a good field of view from the rear window portion 90 can be maintained.

A capacitor 83 is provided below the rear window portion 90 in the rear wall portion 32 of the cabin 30 . According to such a configuration, it is possible to suppress adhesion of dust, which is stirred up by the exhaust air of the fan 84 provided as the capacitor unit 81 together with the capacitor 83 , to the rear window portion 90 . That is, the space under the rear wall portion 32 of the cabin 30 can be effectively used to dispose the condenser unit 81, and the dust blown up by the fan 84 adheres to the view from the rear window portion 90. aggravation can be suppressed.

Also, the outside air introduction cover 15 is arranged so that a part of the outside air introduction cover 15 and the rear wall portion 32 of the cabin 30 are aligned in a side view. According to such a configuration, the space behind the cabin 30 can be effectively used, and the cabin 30 and the outside air introduction cover 15 can be morphologically integrated, and the exterior design can be improved. can be improved.

According to the combine harvester 1 according to this embodiment, it is possible to improve maintainability of the outside air introduction duct 120 for the air conditioner unit 82 provided inside the roof portion 35 of the cabin 30 .

An outside air introduction duct 120 is provided below the roof portion 35 in the cabin 30 according to the present embodiment. According to such a configuration, the height position of the outside air introduction duct 120 can be lowered, so that good maintainability of the outside air introduction duct 120 can be obtained.

Also, the outside air introduction duct 120 is provided on one of the left and right sides (left side) on the rear side of the cabin 30 . According to such a configuration, it is possible to prevent the external air introduction duct 120 from obstructing the front or rear view from the cabin 30 . Moreover, since the accessibility to the outside air introduction duct 120 from the side of the cabin 30 can be improved, it is possible to obtain good maintainability of the outside air introduction duct 120 .

In addition, in the outside air introduction duct 120, an intake port 138 provided in the lower portion is formed so as to open facing the right side, which is the left and right inner sides of the cabin 30. As shown in FIG. According to such a configuration, the air intake port 138 is located in a hidden place on the left and right inner sides of the outside of the cabin 30, so that the suction of dust and the like from the air intake port 138 can be suppressed. becomes possible.

In addition, the opening side of the intake port 138 of the outside air introduction duct 120 is the side of the air exhaust path by the fan 84 of the condenser unit 81 . According to such a configuration, the dust and the like are blown backward by the exhaust air from the fan 84, so that it is possible to effectively suppress the dust and the like from being sucked from the intake port 138. Become.

It should be noted that the formation site of the intake port 138 in the outside air introduction duct 120 is not particularly limited. The intake port 138 may be formed in other parts such as the rear surface portion 134 and the bottom surface portion 136 of the outside air introduction duct 120, for example.

In addition, the outside air introduction duct 120 is provided with a filter 150 for cleaning the air. With such a configuration, the filter 150 is positioned below the roof portion 35, so the filter 150 can be provided at a low height position. Thereby, maintenance of the filter 150 can be easily performed.

In addition, the filter 150 is provided inside the outside air introduction duct 120, and a window part 180 for maintenance of the filter 150 is provided on the left side surface part 131, which is the outside side part of the outside air introduction duct 120. According to such a configuration, cleaning and replacement of the filter 150 in the outside air introduction duct 120 can be easily performed from the window portion 180, and the maintainability of the filter 150 can be improved.

Regarding the arrangement of the air conditioner unit 82 , the blower fan 96 is arranged on the outside air introduction duct 120 side with respect to the heat exchanger 95 . According to such a configuration, the air introduced into the roof portion 35 by the outside air introduction duct 120 can be efficiently sent to the heat exchanger 95 by the blower fan 96 .

The above description of the embodiment is an example of the present invention, and the combine according to the present invention is not limited to the above embodiment. Therefore, it goes without saying that various modifications other than the above-described embodiments are possible according to the design and the like, as long as they do not deviate from the technical idea of the present invention.

1 combine harvester 11 engine 12 operation unit 15 outside air introduction cover (engine cover)
30 cabin 32 rear wall 34 right wall 35 roof 51 door 70 transmission window 75 upper cover 80 air conditioner 81 condenser unit 82 air conditioner unit 83 condenser 84 fan 90 rear window 95 heat exchanger 96 blower fan 110 outside air intake 120 outside air introduction duct (outside air introduction part)
121 Outside Air Introduction Path 125 Shutter Part 132 Right Side Part 138 Intake Port 141 Partition Wall 150 Filter 180 Window Part 181 Open/Close Door

Claims

A combine having a cabin covering the driving part,
A side wall portion of the cabin provided with a door for getting on and off of the cabin has a rear edge portion inclined backward in a side view,
A combine harvester, wherein the rear wall portion of the cabin is formed along a rear end portion of the side wall portion.
The combine according to claim 1, wherein a condenser of an air conditioner is arranged below the rear wall portion of the cabin.
The combine according to claim 2, wherein the rear wall portion of the cabin is provided with a rear window portion.
The combine according to claim 3, wherein the condenser is provided below the rear window.
an engine provided on the rear lower side of the cabin;
an engine cover arranged on the side of the engine,
The combine according to claim 1, wherein the engine cover is arranged so that a part of the engine cover and the rear wall portion of the cabin are aligned in a side view.
The rear wall portion of the cabin has a rearwardly inclined shape in a side view,
The combine according to claim 5, wherein the engine cover is provided so that at least a portion of the engine cover is positioned below the rear wall portion in a side view.
A transmissive window is provided in a portion of a side wall portion on a side on which the engine cover is positioned, of left and right side wall portions of the cabin, which is positioned above the engine cover in a side view. Item 6. The combine according to Item 6.
The combine according to claim 7, wherein a lower portion of the transmission window and an upper portion of the engine cover face each other in the front-rear direction when viewed from the side.
comprising an air conditioner condenser located behind the cabin,
The combine according to claim 8, wherein an outside air intake port for taking in outside air to the condenser is provided at a position overlapping with the engine cover in a side view.
The combine according to any one of claims 7 to 9, wherein the transmission window is provided in a slanted shape from the front side to the rear side in plan view so as to go from the left and right outer sides to the left and right inner sides.
An upper cover portion positioned behind the transmissive window in a side view is provided on the upper side of the engine cover,
The combine according to any one of claims 7 to 9, wherein the upper cover portion is provided in an inclined shape so as to expose the transmission window when viewed from the rear.