JP2000355215A - Vehicular air conditioning unit and grille unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular air conditioning unit and a grille unit excellent in the control of air flow direction by a grille. SOLUTION: In a vehicular air conditioning unit 1 which is provided with an evaporator 15, a cross flow fan 16, a case 17 which stores them and has a suction port 19 and a blow-out port 21 for air, a frame 27 specifying the blow-out port 21, and a grille 25 provided in the blow-out port 21, turns the grille 25 relative to the frame 27 to adjust the direction of air blowing out from the blow-out port 21, and is installed on a ceiling, a fringe part on the blower side of the grille 25 is provided with a guide part 29 guiding air flow from the cross flow fan 16 toward the grille 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning unit for a vehicle, which is installed on a ceiling of a vehicle and blows conditioned air from the ceiling into a room, and a grill unit for adjusting the direction of air from an outlet.

[0002]

2. Description of the Related Art In general, an air conditioner mounted on a vehicle is mounted on a ceiling of a so-called one-box car or the like, and a ceiling-mounted type air conditioner for blowing conditioned air (cool air) mainly toward a rear seat in a vehicle cabin. Units are known (for example, JP-A-9-290625). In this type of vehicle air conditioning unit, as shown in FIG.
The case 107 is provided with a grill 103 that changes the direction of the wind from the blower 101. And grill 1
A gap A is formed between the grill 103 and the frame 108 so as to rotatably provide the 03.

[0003]

However, in the conventional vehicle air conditioning unit, the air leaks into the gap A between the grill 103 and the frame 108, and blows out from the gap between the grill 103 and the frame 108. (See arrow D).

As described above, the grill 103 and the frame 10
8, there is a problem that the controllability of the wind direction by the grill 103 is inferior. In addition, grill 1
There is a problem that the wind (see arrow C) guided by 03 interferes with the leaked wind (arrow D) and reduces the control of the wind direction by the grill 103.

Accordingly, an object of the present invention is to provide a vehicle air conditioning unit and a grill unit which are excellent in controllability of the wind direction by a grill.

[0006]

According to a first aspect of the present invention, there is provided an evaporator, a blower, a case accommodating the evaporator, an air inlet and an air outlet, a frame defining an air outlet, and a blower. A ceiling-mounted vehicle air conditioning unit that includes a grill provided at the outlet and adjusts the direction of wind blown from the outlet by rotating the grill relative to the frame.
An air-conditioning unit for a vehicle, comprising: a guide portion on a side of a blower of a grill that guides wind from the blower toward the grill.

[0007] According to the first aspect of the invention, the air taken in from the suction port is cooled by passing through the evaporator, then passes through the blower, and is blown from the outlet into the vehicle compartment. The direction of the wind blown from the outlet is controlled by rotating the grill.

[0008] A part of the wind from the blower toward the grill tends to go to the gap formed between the grill and the frame, but this wind is guided toward the grill by the guide portion. It is difficult for the wind to leak from the gap between the grill and the grill, so that the controllability of the wind direction by the grill is excellent.

According to a second aspect of the present invention, in the first aspect of the present invention, the inside of the case is regulated so that the wind blown from a blower near the grill is directed toward the outlet. The regulating member is provided with an extending portion that curves in a concave shape along a rotation trajectory of a guide portion that is moved by the rotation of the grill.

[0010] According to the second aspect of the present invention, the first aspect is provided.
In addition to the same operation and effect as the invention described in the above, the regulating member is provided to guide the wind from the blower to the grill side,
When the grill is rotated by a predetermined amount and the guide portion is at a position away from the frame, the wind toward the outlet is guided by the extension portion and the guide portion to the grill. Therefore, no matter where the grill rotates, the amount of air leaking from the gap between the grill and the frame can be reduced, and the wind direction controllability of the grill is further enhanced.

Further, since the extension portion is curved along the rotation trajectory of the guide portion, the gap between the guide portion and the extension portion can be kept to a minimum, and the grille can be turned to any position. Even if it moves, it is possible to further prevent the wind from leaking from the gap between the grill and the frame.

According to a third aspect of the present invention, in the second aspect of the invention, the extension portion blows from substantially the same position where the guide portion is maximally separated from the frame by the rotation of the grill. It extends to the vicinity of the exit.

According to the third aspect of the present invention, the second aspect is provided.
In addition to providing the same operation and effect as the invention described in the above, when the grill is rotated to the maximum and the guide is at the position farthest from the frame, there is an extension at substantially the same position as the guide. In addition, the gap between the guide portion and the regulating member can be reduced, and the leakage of air from between the grill and the frame can be further reduced.

The invention described in claim 4 is the first to third aspects of the present invention.
In the invention described in any one of the above (1) to (4), the frame includes a contact portion that restricts the rotation of the grill by the guide portion abutting when the grill rotates a predetermined angle.

[0015] According to the fourth aspect of the present invention, the first aspect is provided.
In addition to providing the same operation and effect as the invention described in any one of (3) to (3), the rotation of the grill is limited by the guide portion coming into contact with the contact portion of the frame. By providing the contact portion, the rotation of the grill is restricted, so that excessive rotation of the grill can be prevented. Further, since the guide portion also serves as a stopper for contacting the contact portion, and there is no need to separately provide a stopper, the structure is simple and the number of components can be reduced.

According to a fifth aspect of the present invention, there is provided a frame for defining an air outlet through which air from a blower blows, and a grill provided at the air outlet, wherein the grill is rotated with respect to the frame to allow the air to flow from the air outlet. In the grill unit that adjusts the direction of the blown wind, the blower side edge of the grill includes a guide portion that guides the wind from the blower toward the grill, and the frame has a guide portion when the grill rotates a predetermined angle. It is characterized in that it is provided with an abutting portion that abuts and regulates rotation of the grill.

According to the fifth aspect of the present invention, the direction of the wind blown from the outlet is controlled by rotating the grill, and the rotation of the grill is caused by the guide portion contacting the contact portion of the frame. Limited by contact. A part of the wind from the blower toward the grill tries to go to the gap between the grill and the frame, but this wind is guided toward the grill by the guide section, so that the wind flows from the gap between the grill and the frame. Since it is difficult to leak, the controllability of the wind direction by the grill is excellent. In addition, since the rotation of the grill is restricted by providing the contact portion, excessive rotation of the grill can be prevented. Further, since the guide portion also serves as a stopper to be abutted, and it is not necessary to separately provide a stopper, the structure is simple and the number of parts can be reduced.

[0018]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to FIG.
The embodiment of the present invention will be described in detail with reference to FIG.

In a vehicle air conditioning unit 1 according to an embodiment of the present invention, a unit main body 3 is mounted on a ceiling of a vehicle by a bracket 5. That is, as shown in FIGS. 2 and 3, the unit body 3 is installed on the rear ceiling of the driver's seat 8 in the vehicle 7, and the unit body 3 is provided with a decorative lining panel (molded) provided on the roof panel 9. Ceiling) 11a, 11b.

The unit body 3 is provided with the longitudinal direction of the vehicle 7 and takes in room air from the front side of the driver's seat 8 and blows air-conditioned air to the rear side, which is the rear seat side.

As shown in FIG. 1, the unit main body 3 mainly comprises an evaporator 15 for cooling air, a cross flow fan 16 as a blower, and a case 17 for accommodating these. The case 17 is provided with an air inlet 19 on the front side of the vehicle and an outlet 21 on the rear side, and a grill unit 23 is provided on the outlet 21. The upper part of the evaporator 15 is the suction port 1
It is arranged obliquely so as to approach the 9th side. In this specification, the “cross flow fan” refers to a fan that flows in air from one of the outer circumferences of the impeller, crosses the inside of the impeller, and flows out from the other of the outer circumference of the impeller.

The case 17 is divided into an upper half case 17a and a lower half case 17b, and the upper half case 17a is substantially plate-shaped.
b is formed in a curved shape protruding toward the indoor side,
A curved rising portion is formed on the suction port 19 and the outlet 21 side, and the central portion of the lower half case 17b is concave. The evaporator 15 and the cross flow fan 16 described above are housed in the lower half case 17b.

The upper half case 17a has a substantially plate shape,
By forming the lower half case 17b into a curved shape, the fitting seam of these half cases is located near the lining panels 11a and 11b, and the seam is difficult to see from the vehicle interior, so that the appearance is good.

In this embodiment, the evaporator 15 and the cross flow fan 1 are mounted on the lower half case 17b.
6 is fixed to the motor 18 (see FIG. 4). In this manner, by fixing the motor 18 to the lower half case 17b, vibration noise can be reduced as compared with the case where the motor 18 is fixed to the substantially plate-like upper half case 17a. That is,
Since the lower half case 17b is formed in a curved shape, it has high rigidity as a case, and is less likely to vibrate as compared with the case where the motor 18 is fixed to the substantially plate-like upper half case 17a. In particular, the motor 1 from the lower half case 17b
8 can be prevented from becoming abnormal noise transmitted through the lining panels 11a and 11b. Also, the lower half case 17b
With the configuration in which the evaporator 15 and the motor 18 of the cross flow fan 16 are fixed to each other, by removing the lower half case 17b, maintenance can be easily performed from the vehicle interior side.

As shown in FIGS. 4 and 5, the motor 18 of the cross flow fan 16 is provided with a thermal protector 37.
Is mounted, and detects heat due to heat generation of the motor 18 and cuts off the current supplied to the motor 18. Unlike the fuse, the thermal protector 37 temporarily cuts off the circuit without blowing the circuit, and allows current to flow through the circuit again when the temperature drops.

That is, when a foreign substance or the like enters the cross flow fan 16 and the circuit is locked, a conventional fuse that protects the circuit has a small difference in current value between the locked state and the steady state, so that malfunction occurs. There is an inconvenience that it easily occurs. Moreover, once the fuse is blown, it cannot be restarted as it is, requiring replacement work.
There is also an inconvenience that it takes time.

On the other hand, in the thermal protector 37, the current is cut off by detecting the temperature, so that the restart can be performed without being affected by the magnitude of the current value and removing foreign matter. In addition, even when an overcurrent flows, the current can be cut off due to a rise in temperature.

As shown in FIG. 5, the thermal protector 37 is wired in series with the harness of the motor 18, and the thermal protector 37 is fixed to the motor 18 by a leaf spring 39 as shown in FIG. The motor 18 is configured to be pressed against the housing of the motor 18 by the urging force of the leaf spring 39.

Next, the grill unit 23 will be described. A grill unit 23 is provided at the air outlet 21 of the lower half case 17b.
Is a frame 27 defining the outlet 21 and a frame 2
And a grill 25 provided in the apparatus. Grill 25
As shown in FIGS. 6 to 8, as shown in FIGS. 6 to 8, the rotation of the grill 25 allows the direction of the wind from the outlet 21 to be adjusted with respect to the frame 27. ing. Cross flow fan 16 of grill 25
A guide portion 29 is provided on the lower edge of the
And a stopper 31 is also provided on the upper edge along the rotation shaft 26 of the grill 25.

The distal end 29a of the guide portion 29 is
5 and the cross flow fan 1
The wind from 6 toward the gap A between the grill 25 and the regulating member 33 described later is guided to the grill 25 by the tip portion 29a. Therefore, it is difficult for the wind from the cross flow fan 16 to go to the gap A, and it is possible to prevent the wind from blowing out (leakage) from the gap B between the grill 25 and the frame 27 through the gap A, and to adjust the wind direction by the grill 25. Excellent controllability.

As shown in FIG. 7, below the frame 27, when the grill 25 is rotated downward to the maximum, it comes into contact with the tip portion 29a of the guide portion 29 to limit the rotation. The lower contact portion 27a is provided to limit the rotation of the grill 25 so that it does not rotate any more when the grill 25 rotates to the maximum. Similarly, a stopper portion 31 is provided on the upper side of the frame 27,
7 comes into contact with the upper contact portion 27b provided on the grill 25.
Is restricted (see FIG. 6).

By providing the lower and upper contact portions 27a and 27b on the frame 27, the grill 25
Is restricted, and excessive rotation of the grill 25 can be prevented. In the present embodiment, the guide portion 29
Also serves as a stopper, and it is not necessary to separately provide a stopper, so that the number of parts can be reduced and the structure is simple.

That is, in the conventional grill unit 130 shown in FIG. 10 and FIG.
3 and 133 are separately formed, and the stoppers 133 and 133 are formed.
As shown in FIG. 12, when the grill unit 130 is manufactured, the molds 13 are used to form the stoppers 133 and 133 when the grill unit 130 is manufactured.
7 and 139, the mold structure becomes complicated, and the die-cutting is limited to an angle at which the stoppers 133 and 133 and the grill shaft 132 can be formed at the same time, which makes production difficult.

On the other hand, in the present embodiment, the grill 2
Since the guide portion 29 and the stopper portion 31 are provided directly on the mold 5, the structure of the molds 51 and 53 is simplified as shown in FIG.

On the other hand, a regulating member 33 is provided around the lower side of the cross flow fan 16.
As a result, air flows in from one of the outer circumferences of the cross flow fan 16 and generates a flow of wind that crosses the inside of the cross flow fan 16 and flows out from the other outer circumference of the cross flow fan. That is, generally, the vortex of air generated in the cross flow fan 16 changes according to the shape and position of the restricting member 33, and the air volume changes according to the position and state of the vortex of air. The member 33 guides the wind blown from the cross flow fan 16 toward the outlet 21 as shown in FIGS.

The guide member 29 shown in FIG. 6 is located at a position farthest from the lower contact portion 27a of the frame 27 (when the grill 25 is rotated to the maximum downward). An extension portion 35 extending from the same position to the vicinity of the outlet 21 is formed, and the extension portion 35 is
9 are concavely curved along the rotation trajectory 9.

As shown in FIG. 7, when the guide portion 29 is in contact with the lower contact portion 27a, as shown in FIG. 7, or when the grill 25 is rotated by a predetermined amount as shown in FIG. When the guide portion 29 is located at a position away from the contact portion 27a, the wind that is going from the outside (gap A) of the grill 25 to the outlet 21 (gap B) is guided to the grill 25 together with the extension portion 35. are doing. Therefore, no matter where the grill 25 rotates, the amount of air leaking from the gap B between the grill 25 and the frame 27 can be reduced, and the wind direction controllability of the grill 25 is further enhanced.

Further, since the extension portion 35 is curved along the rotation locus of the guide portion 29, the gap A between the guide portion 29 and the extension portion 35 can be kept to a minimum, and Irrespective of the position to which the 25 is rotated, it is possible to further prevent the air from leaking from the gap B between the grill 25 and the frame 27.

Further, when the grill 25 is rotated to the maximum and the guide portion 29 is at the position farthest from the frame 27, the extension portion 35 is located at substantially the same position as the guide portion 29. The gap A between the portion 29 and the regulating member 33 can be reduced, and the leakage of air from between the grill 25 and the frame 27 can be further reduced. On the other hand, when the position of the extension portion 35 of the extension portion 35 and the guide portion 29 are apart,
In particular, when the guide portion 29 is located at a position higher than the extension portion 35, the gap A between the guide portion 29 and the extension portion 35
Becomes large and the wind easily enters.

Next, the operation of the present embodiment will be described. The air taken in from the inlet 19 is cooled by passing through the evaporator 15, passes through the cross flow fan 16, and is blown from the outlet 21 into the vehicle interior. If you want to change the direction of the air from the outlet 21,
This is done by rotating.

As shown in FIG. 7, when the grill 25 rotates upward and the guide portion 29 contacts the lower contact portion 27a to restrict the rotation of the grill 25 (when the grill 25 is The cross-flow fan 16
Is guided toward the grill 25 by the extension portion 35 and the guide portion 29, and is blown out from the outlet 21.

As shown in FIG. 6, the grill 25 is rotated downward, and the stopper 31 is moved to the upper contact portion 27b.
When the rotation of the grill 25 is limited by contact with the grill (when the grill 25 is rotated to the maximum downward), a part of the wind regulated by the regulating member 33 and traveling toward the grill 25 is reduced.
This wind is directed toward the grill 25 by the guide portion 29 and is blown out from the outlet 21.

When the grill 25 is at the position shown in FIG. 8 (when the guide portion 29 is at a position distant from the frame 27 to some extent), the grill 2 is restricted by the regulating member 33.
A part of the wind heading for 5 goes to the gap B between the grill 25 and the frame 27 through the gap A, but this wind is guided toward the grill 25 by the extension portion 35 and the guide portion 29, The air is blown out from the air outlet 21.

As described above, by providing the guide portion 29 on the grill 25 and the regulating member 33 having the extension portion 35, the wind can be prevented from leaking from the gap B, and the direction of the wind by the grill 25 can be prevented. Excellent controllability.

The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention. For example, as shown in FIG.
The extended portion 35 may be formed in a substantially straight shape without forming a curve in 5.

Further, the stopper 31 of the grill 25 may be used as a guide. In this case, the regulating member 33 is connected to the upper case 17a (upper periphery of the cross flow fan 16).
May be provided.

Further, in this embodiment, the cross flow fan 16 is used as a blower, but a centrifugal fan such as an axial fan may be used.

The grill unit 23 is not limited to being used for the ceiling-mounted vehicle air-conditioning unit 1 as in the present embodiment. For example, the grill outlet of the dashboard of the driver's seat 8 or the household use can be used. The same operation and effect can be obtained by applying to the air outlet of the air conditioning unit.

[0049]

According to the first aspect of the present invention, the provision of the guide portion makes it difficult for the wind to leak from the gap between the grille and the frame, thereby improving the controllability of the wind direction by the grille.

According to the second aspect of the invention, the same effect as that of the first aspect of the invention can be obtained, and the provision of the regulating member allows the grill and the frame to be connected to each other regardless of the position of the grill. The amount of air leaking from the gap between the grilles can be reduced, and the wind direction controllability of the grill is further enhanced. Also,
Since the extension portion is curved along the rotation trajectory of the guide portion, the gap between the guide portion and the extension portion can be kept to a minimum. However, it is possible to further prevent the air from leaking from the gap between the grill and the frame.

According to the third aspect of the present invention, the same effects as those of the second aspect of the invention can be obtained, and when the grill is rotated to the maximum and the guide portion is located at the maximum distance from the frame. Since the extension portion is provided at substantially the same position as the guide portion, the gap between the guide portion and the regulating member can be reduced, and leakage of air from between the grill and the frame can be further reduced.

According to the fourth aspect of the present invention, the same effects as those of the first to third aspects are obtained, and the rotation of the grill is restricted by providing the abutting portion. In addition, excessive rotation of the grill can be prevented. Further, since the guide portion also serves as a stopper for contacting the contact portion, and there is no need to separately provide a stopper, the structure is simple and the number of components can be reduced.

According to the fifth aspect of the present invention, the provision of the guide portion makes it difficult for the wind to leak from the gap between the grill and the frame, thereby improving the controllability of the wind direction by the grill. In addition, since the rotation of the grill is restricted by providing the contact portion, excessive rotation of the grill can be prevented. Furthermore, since the guide portion also serves as a stopper to be contacted, and it is not necessary to separately provide a stopper, the structure is simple and the number of parts can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an installed state of a vehicle air conditioning unit according to a first embodiment of the present invention.

FIG. 2 is a schematic view of a vehicle equipped with an air conditioning unit.

FIG. 3 is a cross-sectional view of the vehicle shown in FIG.

FIG. 4 is a perspective view of a motor of the cross flow fan.

FIG. 5 is a circuit diagram in which a thermal protector is arranged.

FIG. 6 is an enlarged sectional view showing the vicinity of a grill unit of FIG. 1;

FIG. 7 is an enlarged sectional view showing the vicinity of a grill unit of FIG. 1;

FIG. 8 is an enlarged sectional view showing the vicinity of a grill unit of FIG. 1;

FIG. 9 is a cross-sectional view illustrating molding of a grill unit.

FIG. 10 is a perspective view schematically showing a grill unit according to a comparative example.

FIG. 11 is a sectional view of the grill unit of FIG. 10;

FIG. 12 is a cross-sectional view illustrating molding of the grill unit of FIG. 10;

FIG. 13 is a configuration diagram schematically showing a vehicle air conditioning unit according to a modification.

FIG. 14 is a configuration diagram schematically showing a conventional vehicle air conditioning unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle air-conditioning unit 15 Evaporator 16 Cross flow fan (blower) 17 Case 23 Grill unit 25 Grill 27 Frame 27a Lower contact part 27b Upper contact part 29 Guide part 33 Restriction member 35 Extension part

Claims (5)

[Claims] An evaporator, a blower, a case accommodating them, and having an air inlet and an air outlet, a frame defining the air outlet, and a grill provided on the air outlet, the grill being attached to the frame. In a ceiling-mounted vehicle air-conditioning unit that adjusts the direction of wind that blows from an outlet by rotating with respect to the grill, the edge of the grill on the side of the blower has a guide section that guides the wind from the blower toward the grill. An air conditioning unit for vehicles. 2. A regulating member is provided inside the case near the grill to regulate a wind blown from a blower and directs the wind toward an outlet, and the regulating member is a guide moved by rotation of the grill. The vehicle air conditioning unit according to claim 1, further comprising an extension portion that curves in a concave shape along a rotation locus of the portion. 3. The extension portion according to claim 2, wherein the guide portion extends from substantially the same position where the guide portion is maximally separated from the frame by rotation of the grill to the vicinity of the outlet. 2. The air conditioning unit for a vehicle according to claim 1. 4. The frame according to claim 1, wherein the frame includes a contact portion that contacts the guide portion when the grill rotates by a predetermined angle and restricts the rotation of the grill. 2. The air conditioning unit for a vehicle according to claim 1. 5. A frame defining an outlet from which air from a blower blows, and a grill provided at the outlet,
In a grill unit that adjusts the direction of wind blown from an outlet by rotating the grill with respect to a frame, a blower side edge of the grill includes a guide portion for guiding wind from the blower toward the grill, and the frame includes: A grille unit comprising a contact portion for restricting the rotation of the grill by the guide portion abutting when the grill rotates by a predetermined angle.