JP6264063B2 - Traveling vehicle cabin - Google Patents

Description

  The present invention relates to an air conditioner for a cabin of a traveling vehicle such as a tractor.

  Conventionally, as an air conditioner for a tractor cabin, an air conditioner unit is installed on the front side of the roof, an outside air inlet is provided in the center with respect to the left and right direction on the rear side of the roof, and the full width in the left and right direction of the interior space of the roof is used. There is known a structure using a guide duct (see, for example, Patent Document 1).

JP 2008-7055 A

  However, in the tractor shown in Patent Document 1, there is no explicit description of means for detecting the temperature of the outside air.

  An object of the present invention is to provide a cabin of a traveling vehicle that can appropriately detect the temperature of outside air in view of such a conventional problem.

In order to achieve the above object, the first present invention provides:
A cabin of a traveling vehicle comprising a ceiling portion formed by an outer roof and an inner roof disposed to face each other, and an air conditioner unit having an intake fan and disposed inside the front side of the ceiling portion,
A space portion that is formed between a protruding portion that protrudes downward on the left and right sides and the rear side of the inner roof and the outer roof, and communicates with the intake fan;
An air duct disposed in the space, with one end communicating with the air conditioner unit side and the other end communicating with the cabin indoor side;
An inside air inlet that is disposed on the rear side of the protruding portion and introduces the inside air in the cabin into the space;
An outside air introduction port for introducing outside air into the space, provided on either one of the left and right outer sides of the cabin;
A temperature detection unit provided in the vicinity of the inside air inlet and provided in the space ,
The outer roof has a hollow double structure,
The outside air inlet is formed in a portion communicating with the outside air on the lower surface side of the double structure of the outer roof,
An outside air guide port that guides the outside air taken in from the outside air inlet port formed at a portion communicating with the space portion on the lower surface side of the double structure of the outer roof;
The intake fan is disposed on either one of the left and right directions inside the front side of the ceiling,
The outside air introduction port is provided on the opposite side of the left and right outer sides of the cabin to the arrangement of the intake fan,
An audio device disposed in a front gap between the inner roof and the outer roof;
It is a cabin of a traveling vehicle provided with the shielding member which shields passage of the outside air in a part of space part between the audio equipment and the outside air guidance mouth .

Thereby, since the temperature detection part is exposed to the external air sucked by the intake fan, the temperature of the external air can be detected appropriately.
Moreover, this can guide outside air efficiently to the space.
Further, since the shielding member shields the outside air from flowing to the audio device side, dust contained in the outside air can be prevented from entering the audio device.

The second aspect of the present invention
The air duct has a wide part and a narrow part of the duct width,
In the cabin of the traveling vehicle according to the first aspect of the present invention, the shielding member is provided above the wide portion of the air duct.

  Thereby, the approach to the audio equipment side of external air can be effectively shielded.

  ADVANTAGE OF THE INVENTION According to this invention, the cabin of the traveling vehicle which can detect the temperature of external air appropriately can be provided.

Side view of the tractor according to the first embodiment of the present invention. The top view which shows the inside of the ceiling part of the cabin in Embodiment 1 concerning this invention The perspective view which shows the inside of the ceiling part of the cabin in Embodiment 1 concerning this invention. (A): AA ′ schematic cross-sectional view of the cabin shown in FIG. 2 of the cabin according to the first embodiment, (b): B- of the cabin shown in FIG. 2 of the cabin according to the first embodiment. CD Schematic sectional view The perspective view which looked down at the inner roof in this Embodiment 1 from the rear upper part to the front side The schematic perspective view which looked up the ceiling part inside the cabin of this Embodiment 1 from the lower front side to the back side The schematic perspective view which looked up the ceiling part inside the cabin of this Embodiment 1 from the lower front side to the back side

  A tractor cabin according to an embodiment of the present invention will be described below with reference to the drawings.

(Embodiment 1)
First, the schematic configuration of the tractor 10 according to the first embodiment will be described with reference to FIG.

  FIG. 1 is a side view of a tractor 10 according to a first embodiment of the present invention.

As shown in FIG. 1, the tractor 10 of the first embodiment is
An engine 7 is provided inside the bonnet 1 on the front side of the vehicle body, and the rotational power of the engine 7 is transmitted to the pair of left and right rear wheels 3R and 3R via various transmissions in the transmission case 2 to travel by two-wheel drive. Or, it is configured to transmit to a pair of left and right front wheels 3F, 3F and a pair of left and right rear wheels 3R, 3R to travel by four-wheel drive.

  Moreover, it is comprised so that the battery 4 arrange | positioned ahead of the engine 7 may be charged using the rotational power of the engine 7, or the refrigerant | coolant of the air conditioning unit 100 mentioned later may be circulated.

  Further, a cabin 20 as a cockpit surrounding the handle 5 and the cockpit 6 is provided behind the engine 7.

  The upper part of the cabin 20 is covered with a ceiling portion 13 in which an air conditioner unit 100 for cooling and heating inside the cockpit is incorporated, and a pair of left and right door glasses 16L and 16R are provided on the left and right sides of the handle 5, respectively. It can be opened and closed freely. Further, a windshield 14 is attached in front of the cockpit 6, a pair of left and right window glasses 15L and 15R are respectively attached to the left and right sides of the cockpit 6, and a rear glass 11R is further behind the cockpit 6. Is attached.

  Next, the structure of the ceiling part 13 is demonstrated using FIGS.

  FIG. 2 is a plan view showing the inside of the ceiling portion 13 of the cabin 20.

  FIG. 3 is a perspective view showing the inside of the ceiling portion 13 of the cabin 20.

  In FIGS. 2 and 3, since the inside of the ceiling portion 13 is shown, the description of the outer roof described later is omitted.

  4A is a schematic cross-sectional view along the line AA ′ of the ceiling portion 13 shown in FIG. 2, and FIG. 4B is a schematic cross-sectional view along the line B-C-D of the ceiling portion 13 shown in FIG. It is.

  As shown in FIG. 4A, the external structure of the ceiling portion 13 includes an outer roof 200 and an inner roof 300 that are arranged to face each other.

  The outer roof 200 is disposed outside the cabin 20, has a hollow portion 200b therein, and has a double structure including an upper surface side outer roof 200a and a lower surface side outer roof 200c. The upper-side outer roof 200a has a generally square shape at the center and a side that is curved and falls downward in plan view, and has a basin shape as a whole.

  On the other hand, the inner roof 300 is formed so as to be recessed upward, that is, toward the lower outer roof 200c, in a substantially square inner roof central portion 300A in a plan view located above the cockpit 6. .

  Further, the inner roof 300 has a lower side in an inner roof left side portion 300L on the left side of the inner roof central portion 300A, an inner roof right side portion 300R on the right side, an inner roof rear portion 300B on the rear side, and an inner roof front portion 300C on the front side. And projecting toward the direction away from the lower surface side outer roof 200c. That is, as a whole, the inner roof 300 has a shape in which the periphery of the inner roof central portion 300A protrudes downward.

  As shown in FIG. 4A, a buffer member 390A having heat insulation properties is inserted in the gap between the inner roof central portion 300A and the lower outer roof 200c to block the ventilation of the outside air and the inside air. Yes.

  The air conditioner unit 100 is attached to the front space 310C formed between the front portion 300C of the inner roof and the lower outer roof 200c, and the air conditioner unit 100 has an intake fan 110 on the right side in plan view. It has.

  A left rear air duct 410BL is disposed in the left space 310L formed between the inner roof left side 300L and the lower surface side outer roof 200c. The left rear air duct 410BL has a substantially L shape in plan view (see FIGS. 3 and 7), and the tip of one end 410BLa corresponding to the short side of the L shape is connected to the air outlet 120 of the air conditioner unit. The three openings 300L1, 300L2, and 300L3 provided in the left side 300L of the inner roof are respectively connected to the front side, the rear side, and the center of the other end 410BLb corresponding to the long side of the L-shape. Three outlets 411BL1, 411BL2, 411BL3 communicating with the cockpit inside the cabin 20 through (see FIGS. 5 and 6) are provided toward the operator 12 sitting on the cockpit 6 (FIG. 7). reference). That is, the front and rear outlets 411BL1 and 411BL2 are directed inward, respectively, and the central outlet 411BL3 is protruded and directed slightly rearward.

  The bent portion of the left rear air duct 410BL communicates with the base portion of the left front air duct 410FL extending forward, and the left door glass 16L side of the left corner of the inner roof front part 300C and the windshield. Two defrost outlets 411FL1 and 411FL2 communicating with the cockpit inside the cabin 20 through two openings 300CL1 and 300CL2 (see FIGS. 5 and 6) provided in the engine 14 are provided (see FIG. 7). ). The defrost outlets 411FL1 and 411FL2 are defrost outlets that blow toward the left door glass 16L and the windshield 14, respectively.

  Here, FIG. 5 is a perspective view of the inner roof 300 looking down from the front upper side to the front side, and FIG. 6 is a schematic perspective view of the ceiling portion 13 inside the cabin 20 looking up from the lower front side to the rear side. 7 is a schematic perspective view of the ceiling portion 13 inside the cabin 20 looking up from the lower front side to the rear side. In order to explain the configuration of the air duct arranged inside the ceiling portion 13, the inner roof Descriptions of 300, outer roof 200, air conditioner unit 100, and the like are omitted.

  Similarly to the above, a right rear air duct 410BR is arranged in the right space 310R formed between the inner roof right side 300R and the lower outer roof 200c. The right rear air duct 410BR has a substantially L shape in plan view (see FIGS. 3 and 7), and the tip of one end 410BRa corresponding to the short side of the L shape is connected to the air outlet 120 of the air conditioner unit. The three openings 300R1, 300R2, and 300R3 provided in the inner roof right side portion 300R are in communication with each other on the front side, the rear side, and the center of the other end portion 410BRb corresponding to the long side of the L-shape. Three outlets 411BR1, 411BR2, 411BR3 communicating with the cockpit inside the cabin 20 through (see FIG. 5) are provided toward the operator 12 sitting on the cockpit 6 (see FIG. 7). That is, the front and rear outlets 411BR1 and 411BR2 are each directed inward, and the central outlet 411BR3 is protruded and directed slightly rearward.

  In addition, the bent portion of the right rear air duct 410BR communicates with the base portion of the right front air duct 410FR extending forward, and the right door glass 16R side and the windshield 14 at the right corner of the inner roof front portion 300C. Two defrost outlets 411FR1 and 411FR2 are provided which communicate with the cockpit inside the cabin 20 via two openings 300CR1 and 300CR2 (see FIGS. 5 and 6) provided in the engine (see FIG. 7). . These defrost outlets 411FR1 and 411FR2 are defrost outlets that blow toward the right door glass 16R and the windshield 14, respectively.

  Further, the lower surfaces of the defrost outlets 411FL2 and 411FR2 arranged on the left and right sides for blowing out toward the windshield 14 are respectively left and right door glasses from the center of the inner roof front portion 300C as shown in FIG. As it goes to the 16L and 16R sides, it has an inclined surface that is inclined downward. As a result, the height of the ceiling in the cockpit is high at the center of the inner roof front portion 300C, and is inclined downwardly from the center toward the left and right door glasses 16L, 16R. Can be improved.

  With the above configuration, the three outlets 411BR1 to 411BR3 and 411BL1 to 411BL3 arranged at the upper part on the left and right sides of the cockpit ceiling are provided toward the operator 12, so that the cockpit inside the cabin 20 Comfort can be improved.

  In addition, as shown in FIG. 7, the outer shape is circular in order to ensure the wind speed at the outlets of the outlets 411BR1 to 411BR3 and 411BL1 to 411BL3 arranged at the top of the left and right sides of the cockpit ceiling. Is formed.

  In the same manner as described above, among the outlets 411BR1 to 411BR3 and 411BL1 to 411BL3 arranged at the top of the right and left sides of the cockpit ceiling, the rear right side located far from the air outlet 120 of the air conditioner unit And the right rear air duct 410BR to which the air outlets are attached in order to ensure the air speed at the air outlets 411BR2, 411BR3 at the right center and the air outlets 411BL2, 411BL3 at the left rear side and the left center. The rear end of the other end portion 410BRb, the shape of the duct at each position in the center, and the rear side of the other end portion 410BLb of the left rear air duct 410BL to which the outlets are attached, and the center, respectively. As shown in FIG. 2, the shape of the duct at the position of is the duct width WRmax in plan view. And it has a circular arc shape in order to ensure wide.

  In addition, the duct shape between the rear side of the other end portion 410BRb of the right rear air duct 410BR and the center of the duct is an inclined portion 300RK that connects the steps of the inner roof central portion 300A and the inner roof right portion 300R (FIG. 6). In order to secure a space for the projection member 551 of the switch board 550 arranged in the reference), the projection plate 550 is smoothly curved in plan view, and the duct width WRmin at the position of the projection member 551 is wider than the duct width WRmax. Is narrow.

  Further, the duct shape between the rear side of the other end portion 410BLb of the left rear air duct 410BL and the center is also smoothly curved in plan view for the same reason as described above, and the duct width WLmin Is narrower than the duct width WLmax. However, in the present embodiment, the switch substrate 550 is not disposed in the inclined portion 300LK (see FIG. 3) that connects the steps of the inner roof central portion 300A and the inner roof left portion 300L.

  Note that, in the other end portion 410BLb of the left rear air blowing duct 410BL of the present embodiment, the portion of the duct width WLmax is an example of a wide portion of the duct width of the present invention, and the left rear air blowing duct 410BL of the present embodiment. In the other end portion 410BLb, the part having the duct width WLmin corresponds to an example of the part having the narrow duct width according to the present invention.

  Further, the inner roof front portion 300C is inclined such that the height of the ceiling in the cockpit becomes higher from the cockpit 6 side toward the windshield 14 side as viewed from the side, so that the forward visibility is improved. Can be planned.

  The configuration including the inner roof left side portion 300L, the inner roof right side portion 300R, and the inner roof rear portion 300B according to the present embodiment corresponds to an example of the protruding portion of the present invention. Further, the configuration including the left rear air duct 410BL and the left front air duct 410FL, and the right rear air duct 410BR and the right front air duct 410FR according to the present embodiment is an example of the air duct of the present invention.

  Next, referring again to FIG. 2, the outside air introduction port 500, the outside air introduction port 510, the inside air introduction port 520, and the shielding member 530 will be mainly described with reference to FIGS. 4A and 4B. To do.

  FIG. 4B is a schematic diagram for explaining the relationship between the outside air introduction port 500, the outside air guide port 510, and the left space 310L, and represents a B-C-D cross-sectional portion of FIG. In FIG. 4B, the description of the left rear air duct 410BL disposed in the left space 310L is omitted.

  As shown in FIG. 4B, the outside air introduction port 500 is an opening formed in a portion communicating with the outside air of the lower surface side outer roof 200c of the outer roof 200 protruding to the left outer side of the cabin 20 (see FIG. 2). ).

  On the other hand, as shown in FIG. 4 (b), the outside air guide port 510 is formed at a portion communicating with the left space 310L formed between the lower surface side outer roof 200c and the inner roof left side 300L. It is an opening for guiding outside air taken in from the introduction port 500 to the left space 310L (see FIG. 2).

  Further, as shown in FIG. 2, the audio device 540 is disposed in the gap between the one end 410BLa corresponding to the short side of the L-shape and the lower-side outer roof 200c in the left rear ventilation duct 410BL. Has been.

  In order to shield the outside air taken in from the outside air introduction port 500 from entering the audio device 540 side via the left side space portion 310L, the left side space between the audio device 540 and the outside air guide port 510 is blocked. The shielding member 530 is disposed in a part of the portion 310L, that is, at the position of the AA ′ cross section in FIG. 2 (see FIG. 4A). Further, the shielding member 530 is provided above the portion having the duct width WLmax in the other end portion 410BLb of the left rear air blowing duct 410BL.

  In addition, on the inclined surface of the inner roof rear portion 300B formed to protrude away from the lower surface side outer roof 200c, that is, downward, the inside air of the cockpit is separated from the inner roof rear portion 300B and the lower surface side. An inside air introduction port 520 is formed to be taken into a rear space portion 310B formed between the outer roof 200c and the outer roof 200c.

  The rear space 310B communicates with the left space 310L and the right space 310R.

  A temperature detection sensor 560 (see FIGS. 3 and 7) is arranged in the vicinity of the inside air introduction port 520 and in the rear space 310B.

  The inside air introduction port 520 and the outside air introduction port 500 are provided with a first opening / closing lid and a second opening / closing lid (not shown) that open and close their openings in conjunction with each other. That is, when the first opening / closing lid of the inside air introduction port 520 is opened by the first opening / closing mechanism (not shown), the second opening lid of the outside air introduction port 500 is closed by the second opening / closing mechanism (not shown). When the first opening / closing lid of the inside air introduction port 520 is closed by the first opening / closing mechanism, the second opening / closing lid of the outside air introduction port 500 is opened by the second opening / closing mechanism.

  The temperature detection sensor 560 detects the temperature of the inside air when the inside air introduction port 520 is opened and the outside air introduction port 500 is closed, and the inside air introduction port 520 is closed and the outside air introduction port 500 is opened. In this case, the temperature of the outside air is detected. In other words, in this embodiment, the single temperature detection sensor 560 can appropriately detect both the temperature of the outside air and the temperature of the inside air.

  The configuration including the rear space portion 310B, the left space portion 310L, and the right space portion 310R of the present embodiment is an example of the space portion of the present invention.

  In the above configuration, when the configuration of each space portion is summarized, the rear space portion 310B communicates with the left space portion 310L and the right space portion 310R, and the shielding member 530 is disposed in the left space portion 310L. In addition, an intake port 111 (see FIGS. 2 and 3) of the intake fan 110 is opened in the front space portion 310C with which the right space portion 310R communicates.

  Thereby, when the outside air introduction port 500 is opened, the outside air taken in from the outside air introduction port 500 by driving the intake fan 110 passes through the outside air guide port 510 from the left space portion 310L to the rear space portion 310B. Passes through the right space 310R, is sucked into the air inlet 111, is heat-exchanged by the air conditioner unit 100, becomes hot air or cold air, and flows from the air outlet 120 of the air conditioner unit to the left front air duct 410FL. The left rear air duct 410BL, the right front air duct 410FR, and the right rear air duct 410BR are fed into the cockpit.

  Next, the flow of outside air and inside air in the above configuration will be described.

  That is, the flow of outside air is regulated counterclockwise in plan view, and the temperature detection sensor 560 is reliably exposed to the outside air, so that the outside air temperature can be detected appropriately. Further, by providing the shielding member 530, dustproofing to the audio device 540 can be reliably performed.

  Thereafter, when the inside air introduction port 520 is opened, the inside air taken in from the inside air introduction port 520 by the drive of the intake fan 110 passes through the rear space portion 310B, passes through the right space portion 310R, and then the intake port. 111, and heat exchange is performed by the air conditioner unit 100. From the air outlet 120 of the air conditioner unit, the left front air duct 410FL, the left rear air duct 410BL, the right front air duct 410FR, and the right rear air It is sent out into the cockpit through the duct 410BR.

  As a result, the flow of the inside air is regulated counterclockwise in a plan view, and the temperature detection sensor 560 is reliably exposed to the inside air, so that the inside air temperature in the cockpit can be appropriately detected, and the inside of the cockpit can be detected. Appropriate control can be performed according to the set temperature.

  When the air conditioner unit 100 is operated, when the outside air introduction port 500 is set to the outside air introduction mode in which the outside air introduction port 500 is opened and the outside air introduction mode is set, the inside air introduction port 520 is opened to introduce the inside air. The amount of air blown into the cockpit by the intake fan 110 may increase compared to when the mode is set.

  In that case, when the humidity of the outside air is high during cooling operation, the dew water splashes from the left and right front, rear, and central outlets 411BR1, 411BR2, 411BR3, and 411BL1, 411BL2, 411BL3 to the cockpit. May occur.

  Therefore, when the air conditioner unit 100 is in the cooling operation, when the outside air introduction mode is set, a control for reducing the rotation speed of the intake fan 110 may be performed to reduce the air flow rate.

  In the above-described embodiment, the tractor is used as the traveling vehicle. However, the present invention is not limited to this. For example, any vehicle may be used as long as the traveling vehicle includes a cabin.

  In the above-described embodiment, the case where the intake fan 110 is disposed on the right side in a plan view has been described. However, the configuration is not limited thereto, and for example, a configuration in which the intake fan 110 is disposed on the left side may be employed. In that case, the shielding member 530, the audio device 540, and the outside air introduction port 500 are arranged on the right side in a plan view.

  According to the cabin of the traveling vehicle of the present invention, the effect of being able to appropriately detect the temperature of the outside air is exhibited, and it is useful as a cabin of a traveling vehicle used as an agricultural vehicle or the like.

DESCRIPTION OF SYMBOLS 1 Bonnet 2 Mission case 3R, 3R A pair of left and right rear wheels 3F, 3F A pair of left and right front wheels 4 Battery 7 Engine 13 Ceiling part 20 Cabin 100 Air conditioner unit 110 Intake fan 200 Outer roof 300 Inner roof 310L Left side space part 310R Right side space part 390A Buffer member 410BL Left rear air duct 410BR Right rear air duct 500 Outside air introduction port 510 Outside air guide port 520 Inside air introduction port 530 Shielding member 540 Audio equipment 550 Switch board 560 Temperature detection sensor

Claims (2)

A cabin of a traveling vehicle comprising a ceiling portion formed by an outer roof and an inner roof disposed to face each other, and an air conditioner unit having an intake fan and disposed inside the front side of the ceiling portion,
A space portion that is formed between a protruding portion that protrudes downward on the left and right sides and the rear side of the inner roof and the outer roof, and communicates with the intake fan;
An air duct disposed in the space, with one end communicating with the air conditioner unit side and the other end communicating with the cabin indoor side;
An inside air inlet that is disposed on the rear side of the protruding portion and introduces the inside air in the cabin into the space;
An outside air introduction port for introducing outside air into the space, provided on either one of the left and right outer sides of the cabin;
A temperature detection unit provided in the vicinity of the inside air inlet and provided in the space ,
The outer roof has a hollow double structure,
The outside air inlet is formed in a portion communicating with the outside air on the lower surface side of the double structure of the outer roof,
An outside air guide port that guides the outside air taken in from the outside air inlet port formed at a portion communicating with the space portion on the lower surface side of the double structure of the outer roof;
The intake fan is disposed on either one of the left and right directions inside the front side of the ceiling,
The outside air introduction port is provided on the opposite side of the left and right outer sides of the cabin to the arrangement of the intake fan,
An audio device disposed in a front gap between the inner roof and the outer roof;
A cabin of a traveling vehicle , comprising: a shielding member that shields passage of the outside air in a part of the space between the audio device and the outside air guide port . The air duct has a wide part and a narrow part of the duct width,
2. The traveling vehicle cabin according to claim 1 , wherein the shielding member is provided above a portion of the air duct having a wide duct width.

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