JP3350941B2 - Air conditioner for work equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning duct for agricultural work, construction, and civil engineering work, and more particularly to a grill door provided at an intermediate portion of the duct.

[0002]

2. Description of the Related Art FIG. 12 shows the inside of a cabin of an agricultural work machine such as a tractor, a construction machine such as a bulldozer and a power shovel, and a civil work machine. An air conditioner unit 2 is mounted below the seat 1, and an air conditioning duct 3 is connected to send out cooling air or heating air. The duct 3 descends from the seat portion to the floor 4, branches right and left near the front panel 5, and is provided with front outlets 6, 6.

A grill 7, 7,... Is provided at an intermediate portion of the duct 3, and air is blown from the grill 7, 7,. FIG. 13 shows a cross section of the grill 7, in which a plurality of rotary louvers 8, 8,... Are attached, and the grills 7, 7,. It adjusts the amount of air flow.

For example, at the time of heating, the louvers 8, 8,...
Is rotated to open the grills 7, 7,..., And warm air is blown to the feet of the operator. On the other hand, at the time of cooling, if the louvers 8, 8 ... are reversed to close the grills 7, 7, ..., cool air is blown out only from the front outlets 6, 6. By opening and closing the grills 7, 7,... Provided in the intermediate portion of the duct 3, the room temperature in the cabin is made uniform.

[0005]

A conventional air-conditioning duct for a working machine is provided with grills 7, 7,... At an intermediate portion of the duct 3, but by changing the inclination angle of the rotary louvers 8, 8,. Opening and closing of the grills 7, 7,... Therefore, the work of mounting a large number of louvers 8, 8,... And initial adjustment of the angle is complicated, and the cost of parts is also increased.

Therefore, there is a technical problem to be solved in order to provide an opening at an intermediate portion of the air-conditioning duct to make the room temperature in the cabin uniform and to allow the opening and closing of the opening at a low cost. Therefore, an object of the present invention is to solve this problem.

[0007]

SUMMARY OF THE INVENTION The present invention has been proposed in order to achieve the above object, and is an air conditioning duct for a working machine having an opening in an intermediate portion, the opening being provided in the duct. The grill door, which can be opened and closed freely, is at least the front
A side plate, a rear plate, and both left and right sides, and each side
The plate is expanded from the base end to the other end, and further,
The base end is pivotally attached to one end of the opening, and the
To make the grill door pivotable back and forth, and
An opening provided in the plate, the air is blown through the opening when open Gurirudoa that closes the opening hole, that it is configured so as not to obstruct the flow of air when the occluded the Gurirudoa An object of the present invention is to provide an air conditioner for a working machine.

[0008]

A grill door is pivotally connected to an opening provided at an intermediate position of the air conditioning duct, and both side surfaces of the grill door are widened. When the grille door is opened, the other end of the grille door that is opened widespreads protrudes from the opening, and part of the air in the duct flows out into the cabin from the outlet at the protruding other end.

When the grill door is closed, the other end of the expanded grill door is housed in the duct through the opening. Since the outlet is opened at the other end of the grill door, even when the grill door is closed and the other end is housed in the duct, it does not hinder the flow of air in the duct.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to FIGS. For convenience of explanation, the same components as those in the related art will also be described. FIG. 1 shows the interior of a cabin 11 of a working machine such as a tractor. A front panel 13 is provided below a windshield 12, fenders 15, 15 are attached to both left and right sides of a seat 14, and the upper side of the seat 14 is located above the seat 14. It is covered with a ceiling plate 16. The ceiling plate may be provided with an opening so that it can be opened and closed, or may be made of glass.

An air conditioner unit 1 is provided below the seat 14.
7, a cooling unit and a heating unit are built in although not shown. An air conditioning duct 18 is connected to the air conditioner unit 17, and the duct 18
4 is lowered to the floor 19 from the front end and extends forward on the floor 19. At the front of the floor 19, the duct 18 branches right and left and rises, and the front outlets 20 and 20 are provided on the right and left, respectively. Opening holes 21, 21... Are formed in the middle of the duct 18, and grill doors 22, 22.

FIGS. 2 and 3 show a state in which the grill door 22 is opened. A pin 23 is provided at one end 22a of the grill door 22 so as to be pivotally connected to the upper edge of the opening hole 21 in the drawing. Both side surfaces 24 of the grill door 22 are divergently expanded downward in the figure, and a blow-out port 25 is formed in the expanded other end portion 22b of the grill door 22. Further, a stopper 26 is provided at the other end portion 20b of the grill door, and a handle 27 is protruded. An opening 28 is provided on the back side of the grill door 22.
And open the duct 18 as shown by the arrow A in FIG.
A certain amount of air passing inside is blown out of the duct 18. Also, a stopper 29 is provided at the lower end on the back side of the grill door 22 to regulate the opening angle of the grill door 22.

FIGS. 4 and 5 show the state in which the grill door 22 is closed. The grill door 22 pivots inward of the duct 18 around a pin 23 provided at one end 22a of the grill door, and the other parts of the grill door are turned off. A stopper 26 provided on the end 22b abuts on the lower edge side of the opening 21 of the duct 18 in the drawing. As described above, the opening 28 is widely opened on the back side of the grill door 22, and as shown by the arrow B in FIG. Pass 25. Therefore, even when the grill door 22 is closed, the flow of air in the grill is not hindered.

Here, as shown in FIG.
Are provided at the four corners of the duct 18 mounted on the floor 19, and the drain holes 31
31 ... has been inserted. FIG. 6 shows an enlarged cross section of the projecting hole 30, and air is blown from the air conditioner unit 17. When water droplets are generated in the duct 18 due to a difference between the temperature of the air and the temperature in the cabin 11, the water droplets are drained from the projecting holes 30 to the outside of the floor 19. In this way, it is not necessary to provide a drain pan or the like to store water droplets as in the related art, and drainage from the duct 18 becomes easy. And the duct 18
When the protruding holes 30, 30,... Are inserted into the holes 31, 31,... Of the floor 19, the positioning of the duct 18 can be performed accurately, simply, and quickly.

FIGS. 7 and 8 show a main part of the fender 15 in the cabin 11, and the fender 15 is provided above the fender 15.
The left and right rear pillars 33 are suspended from the rear portions of the left and right fenders 15, 15, respectively. A seal member 34 is attached to the outer surface of the lever guide cover 32 at a position near the rear pillar 33, and is elastically attached to the seal member 36 of the side door 35.

FIGS. 9 to 11 show the main part of the fender 15 when the cabin 11 is detached and opened, and a hand catcher 37 is attached to a position outside the lever guide cover 32. FIG. The hand catcher 37 is formed to be long in the front-rear direction, and its front end 37a is directly in contact with the fender 15 and is bolted from the rear surface of the fender 15. As shown in FIG. 10, the rear end 37 of the hand catcher 37
b, a female screw portion 38 is provided, and the lever guide cover 32 is extended outward to provide a mounting seat 39. When the bolt 40 is tightened from the back surface of the fender 15, the lever guide cover 32 and the hand catcher are provided. 37 are integrally fastened together.

As shown in FIGS. 9 and 11, a plate 41 is suspended from the rear lower surface of the hand catcher 37 to abut against the fender 15, and a hole 42 is formed in the plate 41.
Then, the direction indicator light 43 is inserted into the hole 42 from the outside of the plate 41 and tightened with a nut, and the cable 44 of the direction indicator light 43 is wired from the hole 42 of the plate 41 to the inside of the fender 15. Further, a cover 45 is attached between the lever guide cover 32 and the plate 41.

The cable 45 of the direction indicator lamp 43 can be covered by the cover 45, and when the cover 45 is detached, the above-described seal member 34 can be attached to attach the cabin 11. The present invention can be variously modified without departing from the spirit of the present invention, and it goes without saying that the present invention extends to the modified ones.

[0019]

According to the present invention, as described in detail in the above embodiment, the structure of the grill door is simplified, and when the grill door is opened, a certain amount of air passing through the duct is blown out from the opening hole by a fixed amount. Can be. Further, even when the grill door is closed, the flow of air passing through the duct is not obstructed. In this manner, warm or cool air can be arbitrarily blown out from the intermediate portion of the air conditioning duct, and the temperature in the cabin of the working machine can be made uniform to implement a comfortable working environment.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view showing an air conditioning duct in a cabin of a working machine according to one embodiment of the present invention.

FIG. 2 is an essential part perspective view showing a state where a grill door of the duct is opened.

FIG. 3 is a longitudinal sectional view of a main part showing a state where a grill door of a duct is opened.

FIG. 4 is an essential part perspective view showing a state where a grill door of the duct is closed.

FIG. 5 is a vertical sectional view of a main part showing a state where a grill door of the duct is opened.

FIG. 6 is an essential part longitudinal cross sectional view showing an engagement state between a projecting hole of a duct and a hole of a floor.

FIG. 7 is a perspective view of a main part of a fender in the cabin.

FIG. 8 is a sectional view taken along line XX of FIG. 7;

FIG. 9 is a perspective view of a main part of the fender when the cabin is removed and a hand catcher is attached.

FIG. 10 is a sectional view taken along line YY of FIG. 9;

FIG. 11 is a sectional view taken along the line ZZ of FIG. 9;

FIG. 12 is a partially cutaway side view showing an air conditioning duct in a cabin of a conventional working machine.

FIG. 13 is a longitudinal sectional view of a main part showing a state where a grill of a conventional duct is opened.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 18 Duct 21 Opening hole 22 Grill door 22a One end 22b Other end 24 Both sides of grill door 25 Outlet 26, 29 Stopper 28 Opening

Continued on the front page (56) References Japanese Utility Model Sho-51-38863 (JP, U) Japanese Utility Model Sho-59-123240 (JP, U) Japanese Utility Model Sho 63-23619 (JP, Y2) Japanese Utility Model Utility Model 3-30749 (JP) , Y2) Jikken 49-27949 (JP, Y1) (58) Field surveyed (Int. Cl. ⁷ , DB name) B60H 1/34

Claims (1)

(57) [Claims] 1. A air-conditioning duct of the working machine having an opening hole in the middle portion, the opening hole of the openably form of the duct
The grill doors are at least the front and rear panels and the left
Right side, and each side plate is from the base end to the other end.
Part, and further open the base end to the opening.
The grill door is pivotally attached to one end of the hole, and the grill door is connected through the pivot.
To be able to rotate back and forth, and to provide an opening in the rear plate,
Wherein when the aperture hole has been opened Gurirudoa that are closed are blown air via the openings, the air-conditioning of the working machine when closed the Gurirudoa is characterized in that it is configured so as not to hinder the flow of air apparatus.