JP3164993B2 - Connection structure of air conditioner unit in agricultural vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure for an air conditioner unit in an agricultural vehicle.

[0002]

2. Description of the Related Art In recent agricultural vehicles, there is a case where the inside of a cabin that covers a steering section having a driver's seat, a steering wheel, and the like is air-conditioned by an air-conditioning unit for both air conditioning and cooling. As described above, the air conditioner unit is housed in a roof of a cabin including an inner roof and an outer roof.

[0003] In order to install the air conditioner unit in the roof of such a cabin, when the unit is mounted on an inner roof, an air outlet duct provided for the unit is opened to the inside of the cabin. In this case, in the conventional case, the connection portion of the blow-out duct is connected to the connected portion formed in the blow-off duct in the roof in abutting manner.

[0004]

In order to connect the air conditioner unit to the air duct in the roof, the unit is mounted on the inner roof, and the connecting portion of the air duct is coaxial with the connected portion of the air duct. It needs to be aligned in a heart shape. However, conventionally, the abutting surface of the connection portion and the connection portion is formed on a surface perpendicular to the axial direction of the duct, so that when the air conditioner unit is mounted on the inner roof, a slight displacement occurs. However, misalignment or a gap is generated between the connection portion and the connected portion, and it is difficult to properly match them.

[0005] For this reason, if there is a misalignment or a gap between the connecting portion and the connected portion after the air conditioner unit is mounted, the air conditioner unit is finely moved many times to connect the connecting portion of the blow duct. Has to be aligned with the connected part of the air duct on the roof side, and the installation work of the unit has been very troublesome. Further, when a plurality of connection portions of the blow-out duct are provided, it is necessary to perform the alignment of the connection portions at the same time, so that the installation work of the air conditioner unit is particularly troublesome.

SUMMARY OF THE INVENTION In view of such circumstances, the present invention makes it possible to appropriately position an air outlet duct on an air duct simply by mounting the air conditioner unit on a roof, thereby simplifying installation work of the unit. With the goal.

[0007]

In order to achieve the above object,
The present invention has taken the following technical measures. That is, according to the present invention, an air conditioner unit having an air-conditioning air outlet duct and a blower duct having an outlet grill opening on the indoor side of the cabin are provided in the cabin roof, and a connection portion of the blower duct is connected to the blower duct. In the connection structure of the air conditioner unit in the agricultural vehicle, which is connected to the connected portion formed in the roof in a butt-like manner, a downwardly extending fitting recess provided in the blow-out duct is provided.
By fitting, the connecting portion of the duct is connected to the connected portion.
The tapered upper projection positioned on the roof side
It is characterized by being provided (claim 1). Also,
The present invention provides a method for connecting a connected portion of the blow duct and a blow duct.
As the contact surface with the continuation part goes upward,
It is characterized in that it is formed to incline to the ventilation side of the outlet duct
(Claim 2).

In this case, when the air ducts are respectively arranged on the left and right sides in the roof, the connected portions of the air ducts are formed in an inward opening shape so as to face each other. be protruded a connection portion of the air duct to be connected to the connecting portion to the left and right sides of the air conditioning units are preferred (claim 3). Further, in the case of an air conditioner unit in which the blow-out duct extends over both the right and left sides, a downwardly expanding fitting recess is formed in the lower surface of the center of the blow-out duct, and the fitting recess is fitted into the fitting recess. Preferably, a protrusion for positioning the position of the blow-out duct in the left-right direction is formed at the center in the left-right direction in the roof, and the protrusion is preferably tapered upward corresponding to the fitting recess (Claim 4 ).

In this case, the projecting portion is further constituted by a hollow cover body which covers the second blowout grill opening from the inside of the cabin to the inside of the cabin, and a ventilation port is provided at an upper portion of the cover body. ventilation member for feeding conditioned air may be provided at the bottom of the fitting recess (claim 5).

[0010]

According to the present invention, the projection 28 on the roof 14 side blows out.
The fitting into the fitting concave portion 27 of the duct 20
Since the connecting portion 21 is positioned at the connected portion 25, the projecting portion
Air-conditioning unit 1 so that 28 fits into fitting recess 27.
5 only blows the connecting part 21 of the blow-out duct 20
Butt against connected part 25 of duct 23
(Claim 1). In the invention according to claim 2,
Since the abutting surface of the connected portion 25 of the blow duct 23 and the connecting portion 21 of the blow duct 20 is inclined upward toward the blow side of the blow duct 20, the roof 14
Connection part 2 on the air conditioner unit 15 side to the connected part 25 on the side
If the unit 1 is set to cover from above, the unit 15
The self-weight also acts in the direction in which the connecting portion 21 is pressed against the connected portion 25, so that they can be butted against each other.

According to the third aspect of the present invention, the connected portions 25 of the air ducts 23 disposed on both the left and right sides in the roof 14 are formed in an inward opening shape so as to face each other, and Are protruded on the left and right sides of the air conditioner unit 15. Therefore, the air duct unit 20 is merely lowered so that the blow duct 20 is located between the connected parts 25 on the left and right sides. Each connecting portion 21 is butted against the left and right connected portions 25 without any gap.

Further, according to the fourth aspect of the present invention, the protrusion 28 on the roof 14 is fitted into the fitting recess 27 provided in the blow-out duct 20 to position the duct 20, so that the protrusion 28 is fitted. If the air conditioner unit 15 is lowered so as to fit into the joint recess 27, the position in the left-right direction is determined. At the same time, each connecting portion 21 of the blow duct 20 is also connected to the connected portion 25 of the left and right air ducts 23. Butted without gaps.

According to the fifth aspect of the present invention, the projecting portion 28 is formed of a cover having a hollow and a ventilation port 30 which covers the second outlet grill 29 from above, and feeds conditioned air into the ventilation port 30. Since the ventilation member 31 is provided at the bottom of the fitting recess 27, the two connecting portions 21
Can be connected to the connected portion 25 of the blower duct 23, and at the same time, the blowout duct 20 can be connected to the cover body.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 4, a tractor vehicle body 1 is configured by directly connecting an engine 2, a transmission case 3, and the like, and a cabin 4 that covers a driver's seat, a steering section having a steering wheel, and the like is mounted in a rear portion thereof.

The cabin 4 has a cabin frame 5 which forms a frame of the cabin. The cabin frame 5 has a front column 6, a rear column 7 and an intermediate column 8 between them on both left and right sides. An upper frame material 9 welded to the upper ends of the columns 6, 7, 8 is provided. Rear wheel fenders 10 are provided on both left and right rear lower portions of the cabin frame 5,
A lower frame member 11 is fixed from the upper surface of the rear wheel fender 10 to the lower end of the front surface, and the lower ends of the rear column 7 and the intermediate column 8 are welded to the lower frame member 11. An entrance is provided between the front support 6 and the intermediate support 8, and the access is closed and opened by a door panel 12 pivotally connected to the intermediate support 8. A rear side panel 13 is fitted between the rear support 7 and the intermediate support 8.

The upper portion of the cabin 4 is closed by a roof 14 mounted on the upper frame member 9, and inside the roof 14,
An air conditioning unit 15 for both air conditioning and cooling for air conditioning the cabin 4 is provided.
Reference numeral 5 is attached to a front portion of an inner roof 16 serving as a bottom plate of the roof 14. As shown in FIGS. 1 and 2, the air conditioner unit 15 includes a heat exchanger (not shown) and a fan 18 inside a box body 17.
6 is fixed to the inner roof 16 by bolting a mounting bracket 19 protruding from the vertical side surface to a side surface of an air duct 23 described later.

The box body 17 of the air conditioner unit 15
A blow duct 20 for blowing the conditioned air from the fan 18 to the outside of the box body 17 extends in the left-right direction at the front portion of the blow duct.
Connecting section 21 for connecting the
Are formed so as to protrude to both left and right sides of the box body 17.

Further, as shown in FIG.
At the opening end of the connecting portion 21, a connecting flange 22 is provided so as to protrude outward in the radial direction. Have been. At both left and right ends of the inner roof 16, a ventilation duct 23 for blowing conditioned air from the air conditioning unit 15 to the rear part in the cabin 4 is formed in the front-rear direction. First blow-out grill 2 opening on the indoor side of cabin 4
4 are provided. On the other hand, at the front end of the air duct 23, a connected portion 25 to which the connecting portion 21 of the blow-out duct 20 is connected in abutting manner is formed.

The connected portion 25 of each air duct 23 is bent in an inward opening shape so that the left and right portions face each other. At the open end of the connected portion 25, the connection flange of the connection portion 21 is formed. Flange 2 to be connected to which contact 22 is made
6, the connection flange 26 is also inclined in the same direction as the connection flange 22. 2 and 3
As shown in FIG. 3, a fitting recess 27 having a trapezoidal cross section in the longitudinal direction of the duct is formed on the lower surface of the central portion of the blow-out duct 20, while the fitting recess 27 is formed in the inner roof 16. 27, a cover body (projecting portion) 28 for positioning the outlet duct 20 in the left-right direction is provided. The cover body 28 has an upper tapered trapezoidal cross section in the left-right direction corresponding to the fitting recess 27. It consists of the formed hollow body.

At the front end of the inner roof 16 and at the center in the left-right direction, there is provided a second outlet grille 29 which opens to the cabin 4 on the indoor side. The second outlet grille 29 is covered by the cover body 28 from above. ing. A pair of left and right ventilation holes 30 are provided in the upper plate portion of the cover body 28, and a short cylindrical ventilation member 31 fitted into the ventilation holes 30.
Are fixed to the bottom of the fitting recess 27.

Accordingly, the conditioned air discharged from the air outlet duct 20 of the air conditioner unit 15 is supplied to the air duct 23 on both the left and right sides and the cover 28 at the center.
3, the air is discharged from the first outlet grill 24 to the rear portion of the cabin 4 through the cover member 28, and is discharged from the second outlet grill 29 to the front portion of the cabin 4 through the cover body 28. Heating or cooling.

In this embodiment having the above-described structure, in order to attach the air conditioner unit 15 to the inner roof 16, as shown in FIG. Then, the air conditioner unit 15 is lowered and set on the roof 16, and then the mounting bracket 19 may be bolted.

At this time, as the flanges 22 and 26, which are the abutting surfaces of the connection portion 25 of the blow duct 23 and the connection portion 21 of the blow duct 20, go upward, the blow side of the blow duct 26 (right side in FIG. 3). The air conditioner unit 15 is simply lowered so that the blow-out duct 20 is located between the two connected portions 25.
The self-weight also acts in the direction in which the connecting portion 21 is pressed against the connected portion 25, and each connecting portion 21 of the blow duct 20 can be abutted against the connected 25 portion of the left and right air ducts 23 without any gap.

In this case, the cover body 28 on the side of the inner roof 15 is fitted into the fitting recess 27 provided in the blow-out duct 20 to position the duct 20.
If the air conditioner unit 15 is lowered so that the air conditioner fits into the fitting concave portion 27 of the blow duct 20, each connecting portion 21 of the blow duct 20 can be appropriately joined to the connected portions 25 of the left and right blow ducts 23.

When the cover 28 is fitted into the fitting recess 27 of the air outlet duct 20, the ventilation port 30 on the cover 28 side is opened.
The ventilation member 31 on the side of the outlet duct 20 is also connected to
At the same time, both the connecting portions 21 of the blow duct 20 are connected to the respective connected portions 25 of the blow duct 23, the blow duct 20 can be connected to the cover body 28 at the same time. As shown in FIG.
The upper part of the inner roof 16 is covered with an outer roof 32, and a seal member 33 made of a sponge material for stopping water is provided between the outer roof 32 and the upper frame member 9 of the cabin frame 5. .

The seal member 33 is fixed along the upper surface of the upper frame member 9, and the outer surface of the seal member 33 has
A rubber weather strip 34 formed wider than the sectional height of the seal member 33 is fixed, and the weather strip 34 prevents car wash water from entering the roof 14. FIG. 6 is a heater circuit diagram of the air conditioner unit 15.

As shown in the figure, between the engine 2 and the radiator 35, hot water from the engine 2 is supplied to the radiator 3
5 is connected to a return hose 37 for returning the cooling water cooled by the radiator 35 to the engine 2, and the circulation of the water is provided by a water provided at the front of the engine 2. This is performed by a pump 38. A thermostat 39 is provided downstream of the water pump 38. An air conditioning unit 15 is connected to a bypass pipe 40 connecting the thermostat 39 and the water pump 38.
A heater hose 41 for supplying hot water to the hose is connected to the return hose 37, and a return hose 42 for returning the water heat-exchanged by the air conditioner unit 15 to the return hose 37 is connected to the return hose 37.

In this case, since the heater hose 41 is connected to the bypass pipe 40 on the downstream side of the thermostat 34, hot water can be sent to the air conditioner unit 15 from the start of the engine 2 and the inside of the cabin 4 is quickly heated. And seizure of the engine 2 can be prevented as much as possible. The present invention is not limited to the above-described embodiment. For example, the present invention can be applied to a case where the blow-out duct 20 extends in the front-rear direction. This is applicable even when there is only one.

[0029]

As described above, according to the present invention,
Air conditioner unit so that protrusion 28 fits into fitting recess 27
The connection portion 21 of the blow-out duct 20 can be
Against the connected part 25 of the air duct 23
It is possible to install the air conditioner unit 15
Business becomes simple . Further, according to the invention described in claim 2,
For example , the air conditioner unit 1 is connected to the connected portion 25 on the roof 14 side.
By simply setting the connection part 21 on the fifth side so as to cover the connection part 21 from above, the weight of the unit 15 causes the connection part 21 to be connected to the connection part 25.
The air conditioner unit 16 can be brought into contact with each other without any gap, and the installation work of the air conditioner unit 16 can be simplified.

According to the third aspect of the present invention, each connection portion 21 of the blow-out duct 20 is simply lowered by lowering the air conditioner unit 15 so that the blow-out duct 20 is positioned between the connected portions 25 on the left and right sides. Both sides can be abutted against the left and right connected parts 25 without any gap, and the installation work of the air conditioner unit 15 can be easily performed even if a plurality of connection parts 21 of the blow-out duct 20 are provided.

According to the fourth aspect of the present invention, the protrusion 28 on the roof 14 side is fitted into the fitting recess 2 of the blow-out duct 20.
7 to position the duct 20 in the left-right direction, so that the work of installing the air conditioner unit 15 becomes easier. Further, according to the fifth aspect of the present invention, the cover body 28 on the roof 14 side is
By simply placing the air conditioner unit 15 so as to fit the air conditioner 7, the connection of the blow-out duct 20 to the blower duct 23 and the connection to the cover body 28 can be performed at one time.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a connection structure of an air conditioner unit.

FIG. 2 is a plan view of the same structure.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a rear side view of the tractor.

FIG. 5 is a sectional view taken along line BB of FIG. 4;

6A is a heater circuit diagram of an air conditioner unit, and FIG. 6B is a schematic diagram thereof.

[Explanation of symbols]

 Reference Signs List 4 Cabin 14 Roof 15 Air conditioner unit 16 Inner roof 20 Blow duct 21 Connecting part 23 Blow duct 24 (First) Blow grill 25 Connected part 27 Fitting recess 28 Projection (cover) 29 (Second) Blow grill 30 Ventilation Mouth 31 ventilation member

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masaaki Hama ▼ 64 Ishizukita-cho, Sakai-shi, Osaka Kubota Sakai Works Co., Ltd. (56) References JP-A 1-158215 (JP, U) JP-A 54-135452 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B60H 1/32 614 B60H 1/00 102

Claims (5)

(57) [Claims] 1. In a roof (14) of a cabin (4),
An air-conditioning unit (15) having an air-conditioning air outlet duct (20) and a blower duct (23) having an outlet grill (24) opening on the indoor side of the cabin (4) are provided. in the connection structure of the air conditioning unit in the agricultural vehicle connecting portion (21) which is connected in a butt in the roof (14) in the in the connected portion formed on the air duct (23) (25), said outlet A downwardly extending fitting recess provided in the duct (20)
By fitting into the section (21), the duct (20)
Positioning the connecting part (21) to the connected part (25)
The upper tapered protrusion (28) is on the roof (14) side.
A connection structure for an air conditioner unit in an agricultural vehicle, the connection structure being provided in a vehicle. 2. A connected portion (2) of said air duct (23).
5) abutment of the connection part (21) of the outlet duct (20)
As the contact surface moves upward, the outlet duct (2
2. The method according to claim 1, wherein the inclined surface is formed so as to be inclined toward the blowing side.
Connection structure of air conditioner units in agricultural vehicles. 3. A ventilation duct (23) is disposed on each of the left and right sides in the roof (14), and each of the ventilation ducts (2) is provided.
The connected portions (25) of (3) are formed in an inward opening shape so as to face each other, and the connecting portions () of the blow-out ducts (20) connected to the connected portions (25) of the respective ventilation ducts (23). 3. The connection structure for an air conditioner unit in an agricultural vehicle according to claim 2 , wherein the first and second air conditioners protrude on both left and right sides of the air conditioner unit. 4. An air outlet duct (20) extends on both left and right sides of the air conditioner unit (15).
A downwardly extending fitting recess (27) is formed in the lower surface of the central portion of the blow duct (20), and fits into the fitting recess (27) to position the blow duct (20) in the left-right direction. protrusion (28) is formed in the lateral center portion of the roof (14), according to claim 3 which is formed above the tapered this protrusion (28) corresponds to the fitting recess (27) Connection structure of air conditioner units in agricultural vehicles. 5. The projecting portion (28) is formed of a hollow cover body that covers a second outlet grill (29) that opens to the cabin (4) indoor side from above, and a ventilation port (30) is provided at an upper part of the cover body. 5. The connection structure for an air conditioner unit in an agricultural vehicle according to claim 4 , wherein a ventilation member (31) for supplying conditioned air to the ventilation port (30) is provided at a bottom of the fitting recess (27).