JPH1191340A - Air conditioning device for cabin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently secure a head clearance and an accommodation space and improve the heat exchange effectiveness of air conditioning by arranging an air conditioner main body and a duct having an inside/outside air switching member around the seat of a steering operation device. SOLUTION: An air conditioner main body 39 is removably fitted to the lower section of a cabin 1, and its upper section is practically covered with a floor sheet 16. A duct 36 has an inner air guide port 37, and it is connected to the air conditioner main body 39 via a communicating duct 38 having an inner air filter. The outside air guided into the duct 36 is communicated with the communicating duct 38, and a connection hole 46 connected to the duct 36 can be freely closed by an inside/outside air switching member 47. Since the air conditioner main body 39 is arranged near the side of a seat 4, a head clearance can be expanded in the accommodation space of the cabin 1, and the heat loss and pressure loss are prevented. A circulation flow is generated in the cabin 1, the short circuit of the indoor air can be prevented, and the heat exchange efficiency is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cabin air conditioner (air conditioner for cooling, heating, cooling / heating, ventilation, etc.), and more specifically to a sheet metal skeleton mounted on a tractor body. The present invention relates to a cabin air conditioner having a body.

[0002]

2. Description of the Related Art As a cabin air conditioner (tractor cockpit), an air conditioner (air conditioner body) and an air inlet are provided below a cockpit (driver seat, seat) at a rear portion of a vehicle body. Japanese Patent Application Laid-Open No. 3-276885 proposes a technique in which a rear wheel fender is provided with a fume port (1 of the conventional example).

Further, a cabin is mounted on a transmission case constituting a tractor body, and a lower portion on both left and right sides of the cabin is provided.
An evaporator is provided on a tractor with a cabin that has fenders that cover the left and right rear wheels, a driver's seat is arranged between these left and right fenders, an outside air inlet is provided on the cabin roof, and an intermediate column is provided between the fender and the roof. The air conditioner unit with the built-in is arranged between the transmission case below the driver's seat and the fender, the intermediate post is formed in a hollow shape, the upper end opening of which is communicated with the outside air inlet, and the intermediate post is connected to the fender. With a cabin characterized by providing a reinforcing member constituting a duct communicating the lower end opening and the air conditioner unit, and introducing outside air from an outside air introduction port to the air conditioner unit through the reinforcing member from the intermediate post. A tractor air conditioner has been proposed in Japanese Patent Application Laid-Open No. Hei 8-108741 (conventional example 2).

[0004]

In the prior art 1, the air conditioner unit (air conditioner main body) is provided below the seat, so that the seat position is inevitably increased and the head clearance (the inner surface of the cabin ceiling) is increased. Distance between the operator and the operator's head). Conventional example 2
Since the air conditioner unit is arranged between the transmission case (the side of the tractor body) below the seat and the fender, the head clearance can be increased as compared with the conventional example 1, but the cabin framework In addition to the four pillars of the front, rear, left and right pillars (pillars), an intermediate pillar is required, and since the intermediate pillar is a duct, the visibility of the cabin is deteriorated.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cabin air-conditioning system capable of improving the visibility of a cabin and enlarging the living space of the cabin while ensuring sufficient head clearance.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to a cabin air conditioner which is mounted on a tractor body and surrounds a steering operation device. I have. That is, the cabin air conditioner according to the present invention is characterized in that a duct having an air conditioner main body and an inside / outside air switching member is disposed around a seat in a steering operation device (claim 1).

By adopting such a configuration, it is possible to secure internal space of the cabin without narrowing the area around the seats, to take in and circulate the inside and outside air, etc. Not only can be expected, but also the design can ensure sufficient visibility of the cabin. Further, the air conditioner main body is arranged close to the side of the seat (claim 2).

[0008] By adopting such a configuration, heat loss (loss or reduction of heat energy) and pressure loss (pressure loss or reduction) can be prevented and a heat exchange rate can be ensured. Not only is it possible to obtain the air conditioning (cooling, heating, cooling / heating, ventilation) desired by the operator. Further, the air conditioner body is disposed between a rear wheel fender and a tractor vehicle body and is covered with a floor sheet (claim 3).

By adopting such a configuration, sufficient head clearance can be ensured, and sound and vibration caused by the operation of the air conditioner body can be shielded by the floor sheet, so that driving operation can be performed in a comfortable environment. It was. Further, the air conditioner body is detachably attached to a lower portion of the cabin (claim 4).

By adopting such a configuration, it is not necessary to remove the air conditioner hose for maintenance of the air conditioner body. As a result, the air conditioner medium (gas,
(Water, etc.) without having to worry about maintenance.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1 showing the entire side surface of the cabin 1 of the tractor, FIG. 2 showing the entire front surface (front surface), and FIG. 3 showing the entire back surface (rear surface), the cabin 1 is shown before and after being omitted from the tractor body 2. The cabin 1 is mounted via anti-vibration supports provided on the left and right sides. The cabin 1 surrounds a steering operation device 5 configured by arranging a steering handle 3 and a driver's seat 4 in front and rear.

The tractor body 2 is substantially constituted by a transmission case, and a hydraulic device 7 for lifting and lowering a working machine having a pair of left and right lift arms 6 is provided on the rear upper surface thereof. The rear wheel is shown. The cabin 1 has a sheet metal cabin ceiling 9 and sheet metal left and right fenders 10 connected by sheet metal pillars 11, and also connects the sheet metal cabin ceiling 9 and left and right steps 12 with sheet metal pillars or The cabin skeleton body is constituted by connecting with a pillar 13 made of a steel pipe, and the left and right steps 12 are substantially set as an entrance and exit for the steering operation device 5. 15 is provided so as to be freely opened and closed.

The left and right doors 15 are moved backward and downward by the upper and lower hinges 14 with respect to the pillars 11.
When the door is opened and closed around X, when the door is opened, the lower front portion of the door is raised rearward at the step 12 so that the boarding space is enlarged and the passenger can easily get on and off. The left and right fenders 10 have an upright surface portion 10A and a top plate portion 10 having an arc shape and a forward and downward shape that covers the rear wheel 8 at the upper portion.
B, and the rigidity is improved by forming (forming at the time of press molding) a rib 10C on the upright surface 10A.

Upright portion 10A of left and right fenders 10
The left and right end plates of a sheet metal floor sheet 16 are joined by spot welding, flange bolting, or the like, and the floor sheet 16 includes a rear seat mounting portion 17 and a front half walk-through portion 18 having a stepped portion 19. The inspection window 17A is formed in the vacant seat mounting portion 17 as shown in FIG. 5, and the window 17A is closed by a removable cover (not shown). In this state, the seat 4 is mounted via the seat support, and the walk-through portion 18
Has a notch 18A as shown in FIG.
A control box having a control handle 3, a pedal, and the like is provided upright using the periphery of the notch 18A.

Further, the seat mounting portion 17 of the floor sheet 16
A rear plate 20 is connected to the rear plate 20 and the rear plate 20 is provided upright behind the backrest of the seat 4. They are joined by bolt means or the like.
Here, the floor sheet 16 is formed integrally with the walk-through portion 18, the seat mounting portion 17, and the back plate 20 by sheet metal press molding.

However, the floor sheet 16 may be formed by individually press-forming the walk-through portion 18, the seat mounting portion 17, and the back plate 20, and joining them, and the form of the reinforcing rib is also arbitrary. . In the cabin 1 shown in FIGS. 1 to 3, both the ceiling portion 9 and the left and right fenders 10 are made of sheet metal, and the rearward portions of the ceiling portion 9 and the left and right fenders 10 are made of sheet metal pillars 11. Are connected via a connecting portion 23, the connecting portion 23 is substantially spot-welded, and the connecting portion 23 has a divergent shape that bends back and forth toward the ceiling 9 and the fender 10 and extends. This prevents the buckling of the tractor even when external force acts due to stress dispersion, and since the left and right fenders 10 are substantially made of sheet metal, the tractor body is loaded with the external force via its elastic deformation. 2 mounted.

The pillar 13 connecting the front end of the ceiling 9 and the front end of the left and right steps 12 is made of steel in the embodiment shown in FIGS. 1 to 3, and more specifically, is a substantially gourd shaped steel pipe. Thus, the rigidity of the cabin 1 is enhanced by the pillars 13. Here, the front portion of the cabin 1 is framed by the front edge of the ceiling portion 9, left and right pillars 13, and the like. A front glass is stretched over the entire surface including the side (skirt portion) via a weather strip or the like, and the front glass is provided with a wiper or the like (not shown).

The pillar 13 can be made of sheet metal. In this case, the pillar 13 is joined to the upper end of the pillar 13 at the left and right front ends of the ceiling 9 via diverging connecting portions 23, In any case, as shown in FIG. 2, the pillar 13 is bent outward from the cabin, so that the front view through the front glass is improved and the living space of the cabin 1 is enlarged.

In the cabin 1 shown in FIGS. 1 to 3, the pillars 11 are arranged (standing) rather than right beside the seats 4 but slightly rearward, and the upper and lower ends of the pillars 11 connect the connecting portions 23. The mounting portion 29 of the rear glass 28 is configured to extend rearward through the rear portion. The mounting portion 29 includes a lower rear connector 30 having a U-shape or a U-shape in plan view that connects the lower end portions of the left and right pillars 11 or the upper end portions of the left and right fenders 10 to each other, and the left and right pillars. The upper rear connecting body 31 has a U-shape or a U-shape in plan view that connects the upper ends of the upper and lower rear connecting bodies 31 to each other. Substantially forms the upper edge of the back plate 20 in the floor sheet 16, while the upper rear connector 3
1 substantially forms the rear edge of the ceiling 9.

The left and right corner portions 30A and 31A of the upper and lower rear connecting members 30 and 31 are substantially rounded, and the connecting members 30 and 31 are curved and projected outside the cabin, so that the rear visibility is expanded. And the cabin space is increased, and since the left and right pillars 11 are located slightly behind the seat 4 and located in front of the left and right corners 30A and 31A, visibility on both sides behind is improved. It is.

As shown in FIGS. 6 and 7, the upper end of a rear glass 28 which is spherical and is expanded outward is mounted on the mounting portion 29 via a hinge fitting 28A so as to be openable and closable. When the operator pushes the handle 32 backward, the opening and closing operation of the handle 32 is slowly opened via the pair of left and right gas damper members 33.
Is pulled forward against the gas pressure of the gas damper member 33 and the like, whereby the closing operation is slowly performed, and the closed position can be held by a locking tool (not shown).

Here, an elastic edging material 28B such as a weather strip is attached to the periphery of the rear glass 28 to form a U-shaped rear hatchback in plan view. The rear glass 28 is provided with a wiper 34, and an air conditioner (refers to an air conditioner, which projects rearward) at the middle portion of the upper rear connector 31 in the left-right direction.
An outside air introduction body 35 for cooling, heating, cooling / heating, air blowing, ventilation, etc.) is provided, and a sheet filter is detachably attached to an outside air introduction surface 35A of the outside air introduction body 35 (replaceable). Freely).

The outside air introduction surface 35A is formed as a rear-inclined inclined surface so that the degree of opening of the rear glass 28 can be enlarged and the filter surface can be enlarged. In this embodiment, since the upper rear connecting body 31 has a hollow structure to form a duct of the outside air introducing path since it has the outside air introducing body 35, the left and right pillars 1 connected to the upper rear connecting body 31 are formed.
8 also has a hollow structure to form a duct of the outside air introduction passage, and a floor sheet 16 is formed through a duct (not shown) formed in the lower part of the left and right pillars 11 and the fender 10 as shown by an arrow A in FIG. Can be introduced into the inside / outside air switching member via a duct 36 formed in the back plate 20 portion of the above.

An inside air inlet 37 is formed in the duct 36, and a communication duct 38 having an inside air filter is formed in the duct 36.
Is connected to an air conditioner main body (refers to a main body of the air conditioner and has an evaporator, a blower, and the like) 39, and the inside air inlet 37 is located at a lower rear portion of the seat 4. Referring to FIG. 8, the air conditioner main body 39 is detachably attached to a lower portion of the cabin 1 between one of the upright portions 10 </ b> A of the left and right fenders 10 and a side surface of the tractor vehicle body 2. The upper part is covered, and here the air-conditioner main body 39 is arranged closer to the side of the seat 4 to enlarge the living space of the cabin 1, especially the head clearance, as compared with the case where the air-conditioner main body 39 is arranged on the ceiling 9. As well as preventing heat loss (loss of heat energy) and pressure loss (pressure loss), the air conditioner hose (not shown) can be removed without removing it.

The outlet of the air conditioner main body 39 is an opening 40 formed substantially on one side (the right side in the figure) of the step portion (elevated portion) 19 of the floor sheet 16. Are connected and connected. As shown in FIG. 8, the branch duct 41 is connected to the branch main duct 141 and connected to one side (the right fender side in the figure) of the branch main duct 141, and the arc surface of the top plate 10 </ b> B in one (right) fender 10. And one of the branch-side ducts 241 that are attached along the front surface (made to be a forward descending shape),
9, a communication duct 341 connected to the branch main duct 141 and extending toward the other side (left fender), and a communication duct 341 connected to the communication duct 341 and connected to the other (left side). Top plate 10B in fender 10
The other branch-side duct 441 which is attached along the arc surface of (the front-downward shape) is connected to the lower portions of the left and right branch-side ducts 241 and 441 and is connected to the upper surface of the left and right steps 12. Left and right communication ducts 541 extending forward
And the outer periphery of the hood, and rises on the left and right sides of the control panel mounting plate 42, and the left and right communication ducts 541 are formed.
Defroster (for anti-fog) duct 6 connected to the
41.

The branch duct 41 is desirably made of a hard resin molded product, but may be made of metal. The left and right branch ducts 241 and 441 are formed integrally with the top plate 10B of the left and right fenders 10. The defroster duct 641 may also be attached to the mounting plate 4.
Alternatively, the left and right defroster ducts 641 may be communicated with each other by horizontal ducts along the upper edge of the mounting plate 42.

The left and right branch ducts 241 and 441 have:
The air-conditioning flow outlets 43A and 43B for the waist of the operator (including the upper body such as the thighs, buttocks, waist, abdomen, and shoulders) in the seat 4 are formed at intervals up and down, and the feet, that is, step 12 The air outlets 44A, 44B of the air-conditioning flow slightly above the air outlets are formed vertically and internally and externally.
The lower outlet 44B of 4B is on the outside so that sand and the like on the upper surface of the step 12 can be discharged out of the cabin.

In FIG. 8, the outlets 44A, 44A
4B shows only the left side, but is formed in the branch side duct 241 similarly. The communication duct 341 is also formed with an air-conditioning flow outlet 45 facing forward at the left, right, left, and middle portions thereof, and a rear-facing air-conditioning flow outlet also at the junction between the duct 541 and the duct 641. 46 are formed, and ducts 641 are provided with air outlets 48A, 48B of the air-conditioning flow for fogging with respect to the left and right skirt portions 47A, 47B of the front glass at intervals above and below.

When the left and right ducts 641 are communicated with each other by a horizontal duct, it is preferable that an air outlet is formed also in the horizontal duct. In addition, the above-described outlets are shown as representatives of 43A and 43B in FIG.
A wing plate that can change the wind direction is attached, and the air flow direction (wind direction) such as warm air (for heating), cold air (for cooling), and exhaust air (for ventilation) can be changed to the part desired by the operator. I have.

Further, by providing a shutter (not shown) capable of adjusting the opening area of the air outlet to large, medium and small together with a blade attached to the air outlet, it is possible to adjust the air supply amount and air pressure. desirable. As shown in FIG. 10, the air supply direction B and the air supply flow C from each air outlet are circulated with respect to the inside air inlet 37, and the air conditioner main body 39.
As a result, a short circuit (shortcut) of room air at the inside air inlet 37 can be prevented, and the heat exchange efficiency is improved.

Referring to FIGS. 11 to 13, the outside air introducing body 35,
The outside air introduction duct, the inside / outside air switching member, and the like will be described.
As shown in FIG. 12, the upper rear connecting body 31 is composed of an outer roof 119 made of sheet metal and an inner roof 219 made of a foamed resin material or the like, and both edges have an S-shaped elastic trim (a trimming member). The upper outside air duct 319 is substantially constituted by being joined at 42.

The outside air introduction body 35 has a first outside air filter cover 135 attached to the rear connecting body 31 and has an outside air filter 235 and a second outside air filter cover having a louver 335 in the cover 135. 43
5 is openable and closable with the hinge 43 as a fulcrum, and is detachable with a stopper 44. The outside air that has passed through the fill 235 can be introduced into the duct 319 through the communication hole 45.

The outside air introduced into the upper outside air duct 319 as shown by the arrow D in FIG. 11 is the outside air introduced from the upper part of the cabin 1, so that there is little dust and the like and the fresh air is distributed to the left and right. (Only one of them is shown in the figure), and reaches the inlet 45 formed at the upper part of the left and right pillars 11, and shows an arrow to the duct 36 via the duct 111 formed by providing the interior material inside the left and right pillars 11 made of sheet metal. It can be introduced like A.

The outside air introduced into the duct 36 is communicated with a communication duct 38 having an inside air filter via a duct 136 having an inside air inlet 37.
A communication hole 46 formed in a partition plate 236 with the inside 36 can be closed by an inside / outside air switching member 47. The inside / outside air switching member 47 is movable up and down via a hinge 48, and is connected to a knob 50 via a link 49. By manually operating the knob 50, the inside / outside air switching member 47 is supported by the hinge 48 via the link 49 as a fulcrum. When the air switching member 47 opens and closes, the communication hole 46 is opened.
And a position in which most of the inside air introduction port 37 is closed. The inside air introduction port 37 is provided with a planar inside air filter 37A so as to be exchangeable.

[0035]

As described in detail above, according to the present invention, the heat exchange rate can be improved while ensuring sufficient head clearance and living space.

[Brief description of the drawings]

FIG. 1 is a side view of a cabin provided with an air conditioner according to the present invention.

FIG. 2 is a front view of a cabin provided with the air conditioner according to the present invention.

FIG. 3 is a rear view of a cabin provided with the air conditioner according to the present invention.

FIG. 4 is a plan view showing the left half of the ceiling of the cabin according to the present invention.

FIG. 5 is a plan view of the left half of the floor sheet of the cabin according to the present invention.

FIG. 6 is a rear perspective view of a cabin provided with the air conditioner according to the present invention, showing a rear door closed state.

FIG. 7 is a rear perspective view of the cabin provided with the air conditioner according to the present invention, showing a rear door opened state.

FIG. 8 is a perspective view showing a duct configuration of the air conditioner according to the present invention and omitting a ceiling portion.

FIG. 9 is a perspective view showing a ceiling part of FIG. 8;

FIG. 10 is an explanatory diagram of an air-conditioning flow.

FIG. 11 is an exploded perspective view showing an outside air introduction path.

FIG. 12 is a cross-sectional view of the outside air introduction body.

FIG. 13 is a sectional view of the inside / outside air switching device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cabin 4 Seat 10 Fender 16 Floor sheet 36 Duct 39 Air-conditioner main body 47 Inside / outside air switching member

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroki Nagai 64 Ishizukita-cho, Sakai-shi, Osaka Inside Kubota Sakai Works

Claims (4)

[Claims] An air conditioner for a cabin mounted on a tractor body surrounding a steering operation device, wherein a duct having an air conditioner body and an inside / outside air switching member is arranged around a seat in the steering operation device. Cabin air conditioner. 2. An air conditioner for a cabin, wherein the air conditioner body according to claim 1 is arranged close to a side of a seat. 3. An air conditioner for a cabin, wherein the air conditioner body according to claim 1 or 2 is arranged between a rear wheel fender and a tractor body and covered with a floor sheet. 4. The air conditioner body according to claim 1, wherein
An air conditioner for a cabin, which is detachably attached to a lower portion of the cabin.