JP2004098955A - Cabin structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem of a conventional air conditioner for a cabin that an inside/outside switching means has a structure having a number of parts for air intake. <P>SOLUTION: In a cabin structure, the air conditioner is arranged on one side between an inner roof and an outer roof composing a cabin ceiling. The inside/outside switching means is provided to an air intake part. Inner circulation and outdoor air intake can be switched. An inside/outside air switching plate 60 made of a plate member is formed in an L-shaped profile, and has one end rotatably supported to the air intake part and the other end fixed to a lever 62. The inside/outside air switching means can be operated by protruding the end of the lever 62 inside the cabin. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a technology of a cabin configuration of a traveling body provided with an air conditioner.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a work vehicle such as a tractor, a configuration in which an operating unit is covered with a cabin and an air conditioner that performs air conditioning and ventilation in the cabin is provided in the work vehicle has been widely used. In such a configuration, an inlet for introducing air from the inside and outside of the cabin is provided, and a connection portion between the duct for introducing air into the air conditioner and the inlet is provided with an opening / closing type for closing the inlet. There is known a technology in which an inside / outside air switching means such as a shutter is provided so that inside air or outside air can be selectively introduced (see Patent Documents 1 and 2).
[0003]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 9-95121 [Patent Document 2]
JP 2001-253224 A
[Problems to be solved by the invention]
However, in the above configuration, since the inside / outside air switching means requires many components and assembling steps, it has caused an increase in the manufacturing cost of the cabin.
Further, in the configuration in which the outside air inlet is provided, the number of components and the assembling process are increased due to the duct provided in the inlet. Furthermore, when water flows in through the inlet during car washing or the like, there is a possibility that other members provided in the ceiling may be wet with water or water may enter the interior of the cabin.
[0005]
[Means for Solving the Problems]
The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
[0006]
That is, in claim 1, an air conditioner is provided on one side of the ceiling of the cabin that covers the operating unit of the traveling body, and an air inlet for the air conditioner is provided on the other side. The cabin has a structure in which the air conditioner and the intake section communicate with each other via a duct, and the intake section is provided with inside / outside air switching means, and is capable of switching between inside air circulation and outside air introduction. An inside / outside air switching plate is formed in an L-shape in side view, and one end opposite to the intake section is rotatably supported, and a lever is fixedly provided at the other end, and the end of the lever protrudes into the cabin. It is made operable.
[0007]
According to a second aspect, in the cabin structure according to the first aspect, a lever for operating the inside / outside air switching plate is formed of an elastic member, and the lever is disposed inside the cabin and provided at both ends of the long hole. It is inserted into a lever guide having a locking portion.
[0008]
In claim 3, the ceiling of the cabin that covers the driving unit of the traveling body is constituted by an inner roof and an outer roof, and an air conditioner is disposed on one side of the ceiling between the inner roof and the outer roof. A cabin structure in which an intake portion to the air conditioner is disposed on the front and rear and the other side, wherein a step is formed between an outside air inlet of the intake portion and a duct inside the ceiling communicating with the air conditioner. And the outside air introduction port is located below the duct in the vertical direction.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the invention will be described.
1 is a side view of a tractor provided with a cabin according to the present invention, FIG. 2 is a plan view showing the structure of a roof, FIG. 3 is a side sectional view of the same, and FIG. 4 is a side sectional view showing the structure of inside / outside air switching means. 5 is a perspective view showing the configuration of the outside air inlet, FIG. 6 is a side sectional view showing the configuration of the inside / outside air switching means when the outside air is shut off, and FIG. 7 is a side sectional view showing the structure of the inside / outside air switching means when the inside air is shut off. FIG. 8 is a plan view partially sectional view showing a configuration of a lever attached to the inside / outside air switching plate, and FIG. 9 is a plan view of a lever guide.
[0010]
First, the overall configuration of a tractor 1 including a cabin 9 according to the present invention will be described with reference to FIG.
Front wheels 3 are supported on the engine frame 2 via a front axle case, and a transmission case 4 is disposed on the rear of the engine frame 2 via a clutch housing. On both sides of the transmission case 4 via a rear axle case. Rear wheels 5.5 are supported. A work machine can be mounted to the rear of the transmission case 4 via a work machine mounting device including a top link, a lower link and the like. Further, a front wheel drive output shaft projects forward from a lower front portion of the transmission case 4 so that the front wheels 3 can be driven via a universal joint, a transmission shaft and the like.
[0011]
An engine 5 is mounted on the engine frame 2, and the engine 5 is covered by a bonnet 6. A steering handle 7 and a seat 8 are arranged at the rear of the bonnet 6 to form a driving unit. The driving unit is covered by a cabin 9. The cabin 9 has a cabin frame 10.10.11.11 standing upright from the engine frame and the transmission case 4, respectively. The upper surface is covered by a roof 20 to form a ceiling portion, the front surface is a windshield, and the side surfaces are doors 12.12. The rear side is covered with rear glass.
[0012]
Next, a configuration of disposing the air conditioner 21 on the roof 20 of the cabin 9 and a structure of the air introduction duct 22 used for the air conditioner 21 will be described with reference to FIGS. 2 and 3.
An air conditioner 21 is disposed on one side (front in this embodiment) of the roof 20, and an intake section is disposed on the other side (rear). The roof 20 is composed of an inner roof 23 and an outer roof 24, and an air conditioner 21 is disposed between the inner roof 23 and the outer roof 24, and an air conditioner 21 is provided in front of the inner roof 23. A recess 23a is formed for accommodating therein. The inner roof 23 and the outer roof 24 can be made of a synthetic resin, but the outer roof 24 is made of sheet metal instead of a resin such as blow molding or rotational molding, so that the entire roof 20 can be formed thinner. be able to.
[0013]
An outside air introduction port 40 and an inside air introduction port 50 are provided at the left and right central rear portions of the roof 20, and communicate with a suction side of the air conditioner 21 via a duct. The air conditioner 21 includes a fan 25 and a heat exchanger 26, and a compressor (not shown) is arranged near the engine 5. In this embodiment, an indoor unit of an air conditioner is provided as the air conditioner 21, but a ventilation fan or the like may be provided as the air conditioner.
A band-shaped sealing material 27 is provided between the inner roof 23 and the outer roof 24. The seal member 27 extends from the front end of the air conditioner 21 to both left and right sides, extends rearward from both sides of the air conditioner 21 toward both sides of the air introduction portion, and is formed in a substantially U shape in plan view. , The inner roof 23, the air conditioner 21, and the outer roof 24.
An air introduction duct 22 formed by the seal member 27, the inner roof 23, and the outer roof 24 is arranged in the front-rear direction at the left and right centers, and blow-out ducts are formed on both sides thereof and a front part in the left-right center. Are communicated with the inside of the cabin 9 by 28. Then, the air introduced from the air introduction duct 22 to the air conditioner 21 is discharged from the outlets 28 to the operating section in the cabin 9 through the outlet duct. The shape, number and position of the outlet are not particularly limited.
Further, as shown in FIG. 4, by fixing a heat insulating material 29 formed in a plate shape to the lower surface of the outer roof 24, the temperature of the air in the air introduction duct 22 and the cabin is affected by the outside air temperature. Changes can be reduced.
In the above-described configuration, a concave groove portion is provided in the outer roof 24, and the seal member 27 is disposed so as to be in contact with the lower surface of the groove portion, thereby increasing the rigidity of the outer roof 24 and enhancing the compressibility of the seal member 27. Also, it is possible to further improve the airtightness of the air introduction duct 22.
[0014]
The support plate 30 is placed and fixed on the upper surface of the air conditioner 21 and the rear upper surface 23b of the storage recess 23a so that air does not leak in the storage recess 23a. As shown in FIG. 2, beams 31 and 32 are respectively provided between the upper portions of the cabin frames 10 and 10 and the cabin frames 11 and 11, and beams 33 and 33 are provided between the upper portions of the cabin frames 10 and 11. Is erected. A support plate 30 is provided between the beams 33 and 33 on the left and right halfway of the beams 33. The front of the support plate 30 is located on the upper surface of the rear of the air conditioner 21, and the rear of the support plate 30 is located on the inner roof. 23 are fixed to the rear upper surface 23b.
[0015]
Next, the configuration of the outside air introduction port 40 and the outside air introduction duct 41 of the roof 20 will be described.
As shown in FIG. 3, the rear end of the outer roof 24 constituting the ceiling of the cabin 9 protrudes rearward from the rear cabin frames 11. A lower plate 42 is fixed by adhesive or the like so as to cover the lower surface of the protrusion 24a of the outer roof 24. An opening for introducing outside air is provided at the center of the lower plate 42, and an outside air introduction filter 43 is attached so as to cover the opening, thereby forming an outside air introduction port 40.
[0016]
As shown in FIG. 5, a shielding plate 44 formed by bending the plate in a U-shape in plan view is fixed to the lower plate 42 so as to cover both sides and the front of the outside air introduction filter 43. . The shielding plate 44 is in contact with the air introduction duct 22 on its front surface, and an opening 44 a is provided on the front surface of the shielding plate 44, and is communicated with the air introduction duct 22. The shielding plate 44 and the outer roof 24 constitute the outside air introduction duct 41.
In a configuration in which the outside air introduction duct is fixed to the outer roof as a separate body, or in a configuration in which the duct portion is formed integrally with the outer roof, the outer roof is large, so much time is required for assembly work, and productivity is reduced. Had worsened. Therefore, by configuring the outside air introduction duct 41 in this manner, the work of assembling the duct portion can be made easier, and the number of parts can be reduced with respect to the configuration in which a separate duct is attached. Further, in this configuration, the inside of the outside air introduction duct 41 can be cleaned by disassembling the outer roof 24 from the roof 20. And since the fixing part by welding etc. is not exposed outside the vehicle body, it is advantageous also in aesthetic appearance.
Instead of the shielding plate 44, a projecting portion having a U-shape in plan view may be integrally provided on the upper surface of the lower plate 42 by drawing or the like, and the outside air introducing duct 41 may be constituted by the projecting portion and the outer roof 24. It is possible. In the case of such a configuration, the number of parts can be further reduced, and the advantage that the work of fixing the shielding plate 44 to the lower plate 42 becomes unnecessary is obtained.
Also, in any of the configurations using either the shielding plate 44 or the protruding portion, the lower plate 42 is provided with an opening that constitutes the outside air introduction port 40. Therefore, if only the lower plate 42 is changed, Even if the same member is used, it is possible to adopt a configuration in which the outside air introduction port 40 is closed, and parts can be shared even when manufacturing a tractor without the outside air introduction function.
Furthermore, by fixing the shield plate 44 to the lower plate 42 so as to be detachable by fastening with bolts or the like, the inside / outside air switching function is made optional, and the inside / outside air switching function is added or deleted after the tractor 1 is manufactured. It is also possible to do.
[0017]
As shown in FIG. 4, a step 32 a is formed between the upper surface of the lower plate 42 and the upper surface of the beam 32 such that the opening 44 a of the shielding plate 44 is located above the outside air inlet 40 in the vertical direction. Provided. With this configuration, the water is stopped by the step 32a when the water enters from the outside air inlet 40 due to the cleaning of the vehicle body of the tractor 1 or the like, so that it is possible to prevent the water from entering the vehicle body.
[0018]
Next, the configuration of the inside air inlet 50 will be described.
As shown in FIG. 4, a vertical opening 23c is provided near the rear end of the air introduction duct 22 of the inner roof 23, and communicates the air introduction duct 22 with the inside of the cabin 9. The inside air introduction filter 51 is fixed from below so as to cover the opening 23c, and forms an inside air introduction port 50. The inside air introduction filter 51 is fastened and fixed to a base plate 63 of a rotation fulcrum 61 of the inside / outside air switching means, which will be described later, from the inside of the cabin 9 via the inner roof 23 by screws 52 with a knob or the like. I have.
With this configuration, the filter 51 provided in the inside air inlet 50 and the member used for fixing the filter 51 can be shared on the roof of a cabin having different specifications, so that the cost required for the member can be reduced. Become. In addition, since the filter 51 is configured to be detachable from the inside of the cabin 9, replacement of the filter 51 becomes easier.
[0019]
As shown in FIG. 4, inside / outside air switching means is provided at the rear of the ceiling, and the switching means enables switching between inside air circulation and outside air introduction. The switching means comprises an inside / outside air switching plate 60, a pivot 61 composed of a hinge for rotatably attaching the switching plate 60, and a lever 62 for operating the switching plate 60. And is located at a position where it is easy to operate.
The inside / outside air switching plate 60 is formed by bending a plate-like member at a substantially right angle to form a substantially L-shape when viewed from the side. It is a part 60b. The switching plate 60 is arranged such that the bent portion is located upward and the outside air blocking portion 60a projects downward.
The rotation fulcrum 61 rotatably connects the upper surface of the front portion of the base plate 63 of the inside / outside air switching plate 60 and the vicinity of the front end of the switching plate 60, and the base plate 63 is connected to the beam from the rear portion of the upper surface of the inner roof 23. 32 are arranged and fixed over the upper surface. The switching plate 60 is rotatable vertically with respect to the inner roof 23. The base plate 63 has an opening extending from the position of the inside air introduction port 50 to the position of the rear end of the switching plate 60, and the rear of the switching plate 60 from the bent portion is lower than the base plate 63. It is configured to be able to rotate. As a result, as shown in FIG. 7, the switching plate 60 is rotated downward to position the inside air blocking portion 60b in the horizontal direction, thereby making it possible to contact the inside air inlet 50 and close it.
[0020]
In this way, by rotating the switching plate 60 downward, the inside air blocking portion 60b is brought into contact with the inner roof 23 so as to cover the inside air introduction port 50, and the space between the inside of the cabin 9 and the air introduction duct 22 is formed. The air flow can be shut off. Then, when the air conditioner 21 is operated, the outside air is cleaned through the outside air introduction filter 43 of the outside air introduction port 40 and enters the air introduction duct 22 through the opening 44a of the shielding plate 44, and the air conditioning is performed. The air is sucked into the machine 21, the temperature is adjusted (heat exchange), and the air is discharged from the outlets 28 into the cabin. Thus, outside air can be introduced.
Then, as shown in FIG. 6, by turning the switching plate 60 upward, the outside air blocking portion 60 a is brought into contact so as to cover the opening 44 a of the shielding plate 44, and from the outside air introducing duct 41 to the air introducing duct 22. Air can be blocked. When the air conditioner 21 is operated, the outside air is not sucked in, and the air in the cabin enters the space surrounded by the switching plate 60 through the filter 51 disposed in the inside air inlet 50 and the opening 23c, The air enters the air introduction duct 22 from both sides, is sucked into the air conditioner 21, temperature-controlled (heat exchange), and discharged from the outlets 28 into the cabin to circulate. Thus, inside air circulation can be performed.
In addition, seal members 64 and 65 made of urethane or the like in a plate shape are fixed to the surface of the outside air blocking portion 60a in contact with the shielding plate 44 and the surface of the inside air blocking portion 60b in contact with the inner roof 23, respectively. Is increasing the character.
[0021]
As shown in FIG. 8, the lever 62 for operating the inside / outside air switching plate is composed of a plate-like member 62a having an elastic force such as a leaf spring, and the plane of the plate-like member 62a is substantially parallel to the vertical line in the vertical direction. And fixed to one end of the inside / outside air switching plate 60 with rivets 65 at one end of the flat plate member 62a. A grip portion 62b is fixedly provided at the other end, and is projected obliquely into the cabin 9 from an opening 23d provided in front of the beam 32 at the rear of the inner roof 23 as shown in FIG. .
As shown in FIG. 9, a lever guide 66 formed by providing a long hole 66a in a plate-like member is fixed to the outside of the opening 23d of the inner roof 23, and the end of the lever 62 is inserted through the long hole 66a. Is projected. At both upper and lower ends of the long hole 66a, locking portions 66b, 66b are formed by notches directed toward the inside of the lever guide 66 slightly more than a direction perpendicular to the longitudinal direction of the long hole 66a, and the long hole 66a is viewed from the front. It is made to have a substantially “U” shape. Then, the flat plate member 62a of the lever 62 is deformed (bent to the left in FIG. 9) and operated along the long hole 66a to move and fit the lever 62 from the end of the long hole 66a to the locking portion 62. By combining, the lever 62 can be fixed to the locking portion 66b by the elastic force of the flat plate member 62a constituting the lever 62.
With such a configuration, it is possible to hold the inside / outside air switching plate 60 at either the position where the outside air introduction port 40 is closed or the position where the inside air introduction port 50 is closed by the elastic force of the flat plate member 62a. It becomes. Therefore, the number of components can be reduced in comparison with the configuration in which the inside / outside air switching plate 60 is held by biasing by a spring or the like. In addition, it is possible to prevent the inside / outside air switching plate 60 from vibrating and generating noise when the tractor 1 is running.
[0022]
Further, with the above configuration, members such as the inside / outside air switching plate 60, the base plate 63, and the inside air introduction filter 51 can be attached to the inner roof 23 before the assembly process of the roof 20. Become. This can reduce the number of steps required for assembly.
[0023]
【The invention's effect】
The present invention is configured as described above, and has the following effects.
[0024]
That is, as shown in claim 1, an air conditioner is arranged on one side of the ceiling of the cabin covering the driving unit of the traveling body, and an air intake unit for the air conditioner is arranged on the other side. A cabin structure which communicates an air conditioner and an intake section with a duct, and has an inside / outside air switching means in the intake section, and is capable of switching between inside air circulation and outside air introduction. An inside / outside air switching plate is formed in an L-shape in side view, and one end opposite to the intake unit is rotatably supported, and a lever is fixedly mounted on the other end, and the end of the lever is inserted into the cabin. Since the protruding operation is enabled, the inside / outside air switching means can be configured with a smaller number of parts and an assembling process.
[0025]
According to a second aspect of the present invention, in the cabin structure according to the first aspect, a lever for operating the inside / outside air switching plate is formed of an elastic member, and the lever is disposed inside the cabin, and both ends of the long hole are provided. The internal / external air switching plate can be held at one of the internal air shutoff position and the external air shutoff position with a smaller number of parts, and the internal / external air switching plate vibrates. Noise can be prevented.
[0026]
According to a third aspect of the present invention, the ceiling of the cabin that covers the driving unit of the traveling body is constituted by an inner roof and an outer roof, and an air conditioner is disposed on one side of the ceiling between the inner roof and the outer roof. A cabin structure for arranging an intake portion to the air conditioner on the front and rear and the other side, between the outside air inlet of the intake portion and the duct inside the ceiling communicating with the air conditioner. Since a step is provided and the outside air inlet is configured to be located below the duct in the vertical direction, when water or the like enters the ceiling from the outside air inlet, the step causes the water to flow from the duct. It can be prevented from getting inside.
[Brief description of the drawings]
FIG. 1 is a side view of a tractor having a cabin according to the present invention.
FIG. 2 is a plan view showing a configuration of a roof.
FIG. 3 is a side sectional view of the same.
FIG. 4 is a side sectional view showing the configuration of the inside / outside air switching means.
FIG. 5 is a perspective view showing a configuration of an outside air inlet.
FIG. 6 is a side cross-sectional view showing a configuration of an inside / outside air switching unit when outside air is shut off.
FIG. 7 is a side sectional view showing the configuration of the inside / outside air switching means when the inside air is shut off.
FIG. 8 is a plan view and a partial sectional view showing a configuration of a lever attached to the inside / outside air switching plate.
FIG. 9 is a plan view of a lever guide.
[Explanation of symbols]
60 inside / outside air switching plate 62 lever

Claims (3)

An air conditioner is arranged on one side of the front and back of the cabin ceiling that covers the driving section of the traveling body, and an intake unit for the air conditioner is arranged on the other front and rear sides, and the air conditioner and the intake unit are ducted. A cabin structure which communicates with the inside and outside air switching means in the intake section and enables switching between inside air circulation and outside air introduction, wherein the inside and outside air cutoff means is formed by a plate-like member so that the inside and outside air is L-shaped in a side view. A switch plate is configured to rotatably support one end opposite to the intake unit, fix a lever at the other end, and project the end of the lever into the interior of the cabin to enable operation. Characteristic cabin structure. 2. The cabin structure according to claim 1, wherein a lever for operating the inside / outside air switching plate is formed of an elastic member, and the lever is disposed inside the cabin and provided with locking portions at both ends of the long hole. A cabin structure that is inserted into a lever guide. The ceiling of the cabin that covers the driving section of the traveling aircraft is composed of an inner roof and an outer roof, and an air conditioner is arranged on one side of the ceiling between the inner roof and the outer roof, and on the other side. A cabin structure for arranging an air intake unit to an air conditioner, wherein a step is provided between an outside air inlet of the air intake unit and a duct inside the ceiling communicating with the air conditioner, The structure of the cabin, wherein the mouth is located below the duct in the vertical direction.

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