JP2001328419A - Air conditioning unit for automobile and mode door assembly therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a cost of an air conditioning unit for an automobile by improving assembling workability of the air conditioning unit for the automobile. SOLUTION: A sliding mode door 51 for opening and closing a defroster blowoff port 21, a vent blowoff port 31 and a foot blowoff port 41 of a unit case 2 is preinstalled in a housing 52 for slidably holding the mode door 51. A slide mechanism for sliding the mode door 51 by receiving driving force from a driving part K is preinstalled in this housing 52 to form a mode door assembly 50. This mode door assembly 50 is installed in the unit case 2 from an installing port 18 arranged in the unit case 2. Thus, the mode door 51 and the slide mechanism are installed at a stretch in the unit case 2.

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 and a mode door assembly thereof.

[0002]

2. Description of the Related Art FIG. 12 is a sectional view of a main part showing an example of a conventional product. This automotive air conditioning unit a is disclosed in
1-348839,
Vent outlet c and foot outlet d in unit case b
And a sliding mode door e for opening and closing the vent outlet c and the foot outlet d.

The mode door e has a sliding direction A
Guide pins e1 are respectively provided on the left and right side surfaces orthogonal to. The unit case b has guide pins e1 on the left and right inner wall surfaces orthogonal to the sliding direction A, respectively.
Is provided with a guide groove f1 that guides the guide groove f1 in the sliding direction A. Rack e for mode door e
2, and a pinion gear g meshing with the rack e2 is fixed to a rotating shaft rotatably supported by the unit case b.

[0004]

By the way, when assembling the air conditioning unit a for a vehicle, the unit case b is divided into right and left, and a pinion gear g is fixed to one divided member of the divided unit case b. After assembling a rotating shaft, a mode door e, an air mix door for adjusting a mixing ratio of hot air passing through the heat exchanger for heating and cold air bypassing the heat exchanger for heating, etc., the dividing member of the unit case b is assembled. It is necessary to assemble each other.

In addition, it is necessary to assemble the divided members of the unit case b while adjusting the positional deviation of the rotary shaft, the mode door e, the air mix door, etc., which are assembled to one divided member of the unit case b. Therefore, the air conditioning unit a has a problem that the assembling work is complicated and the workability of the assembling work is poor, resulting in a disadvantage in cost.

In view of this problem of the prior art, the present invention provides
To improve the assembly workability of air conditioning units for automobiles,
As a result, it is an object to reduce the cost of an air conditioning unit for a vehicle.

[0007]

According to the first aspect of the present invention,
The defroster outlet, vent outlet,
An automotive air conditioner unit having a foot outlet and a slide-type mode door for opening and closing at least one of the outlets, wherein the mode door is slidable. The holding housing includes a mode door assembly in which a mode door and a slide mechanism that slides the mode door by receiving a driving force from a driving unit are previously assembled. The mode door assembly is mounted on a unit case. It is characterized by being mounted in the unit case from the mouth.

According to a second aspect of the present invention, there is provided the air conditioner for an automobile according to the first aspect, wherein the mode door assembly is detachably mounted in the unit case, and is outside the unit case through the mounting opening of the unit case. It is characterized by being removable.

According to a third aspect of the present invention, there is provided the air conditioner for an automobile according to the first or second aspect, wherein a cooling heat exchanger for cooling the air is provided in an air passage in a unit case through which the air flows. A heating heat exchanger that heats the blast that has passed through the cooling heat exchanger is arranged, and a blast that passes through the cooling heat exchanger and bypasses the heating heat exchanger, and a cooling passage. An air mix door for adjusting the air distribution ratio to the heating heat exchanger of the air blown through the heat exchanger and the bypass passage is provided, and the mode door assembly includes:
An opening / closing mode door is provided which opens and closes the defroster outlet, vent outlet, and foot outlet, and has a convex arc-shaped mode door on the downstream side of the air supply. The air blows out to the air passage on the passage side, and the air that has passed through the bypass passage is led to the air passage on the heating heat exchanger side downstream of the bypass passage and the heat exchanger for heating. It is characterized in that it is pulled back and does not protrude into the ventilation path.

According to a fourth aspect of the present invention, there is provided the air conditioning unit for an automobile according to the third aspect, wherein the housing of the mode door assembly has a projecting portion projecting into the air passage.
The projecting portion is provided with a guide portion for guiding the mode door overhanging to the air passage and pulling back the overhang, and a cutout portion through which the air passes while the mode door is not overhanging the air passage. It is characterized by.

According to a fifth aspect of the present invention, at least one of a defroster outlet, a vent outlet, and a foot outlet provided in a unit case of an air conditioning unit for a vehicle.
A mode door that opens and closes the two outlets, a housing that slidably holds the mode door and that can be attached to the unit case, and a slide mechanism that slides the mode door by receiving a driving force from a driving unit. This is a mode door assembly of an automotive air conditioning unit in which a mechanism and a mode door are pre-assembled in a housing.

According to a sixth aspect of the present invention, there is provided the mode door assembly of the air conditioner for a vehicle according to the fifth aspect, wherein the defroster outlet, the vent outlet, and the foot outlet are opened and closed, and the circle is convex toward the downstream side of the blower. At least in the foot mode, the mode door projects in the air passage in the unit case through which the air flows, and in the vent mode, the mode door is in the state of being not extended to the air passage by being pulled back to the air passage. It is characterized by becoming.

According to a seventh aspect of the present invention, there is provided the mode door assembly of the air conditioning unit for an automobile according to the sixth aspect, wherein the housing has a protruding portion protruding into the air passage,
The projecting portion is provided with a guide portion for guiding the mode door overhanging to the air passage and pulling back the overhang, and a cutout portion through which the air passes while the mode door is not overhanging the air passage. It is characterized by.

[0014]

According to the first aspect of the present invention, the mode door and the slide mechanism that slides the mode door by receiving the driving force from the drive unit are previously assembled to the housing that slidably holds the mode door. The mode door assembly is mounted in the unit case from the mounting opening of the unit case, so that the mode door and the slide mechanism are unitarily blown at once by mounting the mode door assembly into the unit case. Can be assembled to the case.

In addition, since the mode door assembly can be mounted in the unit case after the unit case is assembled, it is not necessary to adjust the positional displacement between the mode door and the slide mechanism when assembling the unit case. . Accordingly, as compared with the conventional product shown in FIG. 12, the workability of assembling the air conditioning unit for a vehicle is improved, and as a result,
The cost of the air conditioning unit for automobiles can be reduced.

In addition, the mode door assembly can be shared even when the shape of the unit case is changed due to a change in the design of the vehicle or the like.
The cost of the air conditioning unit for automobiles can be reduced. Furthermore, since the mode door assembly alone can guarantee the sliding movement of the mode door, the yield of the air conditioning unit for automobiles can be improved,
Also in this respect, it is possible to reduce the cost of the air conditioning unit for a vehicle.

According to the second aspect of the present invention, the mode door assembly is detachably mounted in the unit case and can be taken out of the unit case from the mounting opening of the unit case. At the time of maintenance, disassembly and reassembly of the unit case become unnecessary, and maintenance of the mode door assembly becomes easy.

According to the third aspect of the present invention, a mode door assembly includes a mode door having a circular arc-shaped mode door which opens and closes a defroster outlet, a vent outlet, and a foot outlet and is convex on the downstream side of the air supply. At least in the foot mode, since the air flows out of the bypass passage and the air passage on the bypass passage side downstream of the heating heat exchanger, the defroster outlet,
A large opening / closing mode door that opens and closes the vent and foot outlets can be accommodated in the unit case while suppressing the expansion of the unit case. Can be planned.

In addition, at least in the foot mode, the mode door projects to the air passage on the bypass passage side downstream of the bypass passage and the heat exchanger for heating, and blows the air passing through the bypass passage to the bypass passage and the heat exchanger for heating. Since the air is guided to the air passage on the side of the heating heat exchanger downstream of the heat exchanger, mixing of the cold air passing through the bypass passage and the warm air passing through the heating heat exchanger can be promoted in the foot mode.

In addition, in the vent mode, the overhang to the air passage is pulled back and the air does not overhang in the air passage in the vent mode. It is possible to avoid an increase in airflow resistance due to the overhang of the door in the air passage, and it is possible to maintain an increase in the amount of air distribution into the vehicle interior.

According to the fourth aspect of the present invention, the housing of the mode door assembly has a protruding portion protruding into the air passage, and the protruding portion is provided with the protrusion of the mode door to the air passage and the retraction of the protrusion. A guide portion for guiding and a cut-out portion through which air flows when the mode door is not protruding into the air passage are provided, so that an increase in airflow resistance at the protruding portion of the housing is suppressed to the air passage of the mode door. Can be reliably and stably performed.

According to the fifth aspect of the present invention, the mode door is slidably held in the unit case of the air conditioning unit for an automobile, and the housing attachable to the unit case is attached to the unit case, so that the mode door is assembled in advance to the housing. The mode door and the slide mechanism for the mode door can be assembled to the unit case at a stretch. Moreover, since the mode door and the slide mechanism are pre-assembled in the housing, handling of the mode door and the slide mechanism is easy. Accordingly, the workability of assembling the air conditioning unit for a vehicle is improved, and as a result, the cost of the air conditioning unit for a vehicle can be reduced.

In addition, the present invention can be applied to air conditioning units for automobiles having different unit case shapes and has high versatility.
Also in this respect, it is possible to reduce the cost of the air conditioning unit for a vehicle. Further, since the mode door and the slide mechanism are assembled to the housing, the sliding movement of the mode door can be ensured before assembling the air conditioning unit for a vehicle. Therefore, the yield of the air conditioning unit for automobiles can be improved, and in this respect,
The cost of the air conditioning unit for automobiles can be reduced.

According to the sixth aspect of the present invention, there is provided a mode door having a circular arc-shaped mode door which opens and closes the defroster outlet, the vent outlet, and the foot outlet, and is convex on the downstream side of the blower.
At least in the foot mode, since the air blows out to the air passage in the unit case where the air flows, the defroster outlet,
A large opening / closing mode door that opens and closes the vent and foot outlets can be accommodated in the unit case while suppressing the expansion of the unit case. Can be planned.

Moreover, in the vent mode, the overhang to the air passage is pulled back to be in a non-overhang state in the air passage. Therefore, in the vent mode in which the air is distributed to the upper body of the occupant in the vehicle, the mode door is not operated. Can be prevented from increasing due to the overhang to the ventilation path, and the amount of air distribution into the vehicle interior can be maintained. Therefore, it is possible to achieve both an increase in the amount of air distribution into the vehicle interior in the vent mode and a reduction in the size of the unit case.

According to the seventh aspect of the present invention, the housing has a projecting portion projecting into the air passage, and the projecting portion has
Since the mode door is provided with a guide portion that guides the projection of the mode door to the air passage and pulling back of the projection, and a cutout portion through which the air passes without the mode door being in the air passage, the projecting portion of the housing is provided. Thus, it is possible to reliably and stably perform the extension of the mode door to the air passage and the return of the extension by suppressing an increase in the ventilation resistance of the vehicle.

[0027]

FIG. 1 is an exploded perspective view showing a first embodiment which is an example of an embodiment embodying each of the first to third aspects of the present invention. FIG. 2 is a sectional view of the one shown in FIG. Automotive air conditioning unit 1 shown in FIGS. 1 and 2
The fan motor 3a of the blower 3 is assembled in the unit case 2. As the blower 3, a centrifugal blower is adopted to achieve both quietness and high performance.
The fan motor 3a of the blower 3 has a sirocco fan 3b.
Is installed. The sirocco fan 3b is accommodated in a scroll chamber 11 in the unit case 2.

The unit case 2 includes a front wall 2a disposed on the engine room side of the vehicle interior space covered by the instrument panel, and a rear wall 2b disposed on the seat side. Can be separated. The scroll chamber 11 has a front wall 2 in the unit case 2.
It is formed on the a-side top. In the unit case 2,
An air passage 4 communicating with the scroll chamber 11 and through which air from the sirocco fan 4 flows is also formed. This ventilation path 4
Descending passage 12 through which air from sirocco fan 4 descends
And an ascending passage 13 through which the air passing through the descending passage 12 rises, and a communication passage 14 for communicating the descending passage 12 with the ascending passage 13. The communication path 14 is formed along the bottom wall 2c of the unit case 2.

On the inner wall 2d in the unit case 2 forming the scroll chamber 11 and the descending passage 12, a concave portion 2e recessed toward the descending passage 12 is formed in the boundary region between the scroll chamber 11 and the descending passage 12. I have. The concave portion 2e is provided with a spiral start area of a spiral air passage in the scroll chamber 11,
That is, the spiral ventilation passage has the smallest cross-sectional area and forms the narrowest portion with the smallest distance from the sirocco fan 3b. In the descending passage 12, a cooling heat exchanger 5 for cooling the blower is disposed. The cooling heat exchanger 5 is inclined from the horizontal state by about 10 degrees to 30 degrees so that one end located on the ascending passage 13 side is located below the other end.

The air passing through the cooling heat exchanger 5 flows through the communication passage 14 along the bottom wall 2c of the unit case 2. In the communication passage 14, the rectifying plate 7 that guides the air blown through the cooling heat exchanger 5 to the ascending passage 13 smoothly is arranged. The ascending passage 13 has an inner wall 2b
A heating heat exchanger 6 for heating the air passing through the cooling heat exchanger 5 is disposed substantially parallel to the cooling heat exchanger 5 adjacent to the concave portion 2c. Between the rear wall 2b of the unit case 2 and the heat exchanger 6 for heating, there is provided a bypass passage 15 through which the air passing through the heat exchanger 6 for cooling bypasses the heat exchanger 6 for heating. . In the bypass passage 15, a rotary air mix door 16 for adjusting the air distribution ratio between the heating heat exchanger 6 of the air blown through the cooling heat exchanger 5 and the bypass passage 15 is arranged. .

A guide wall 2h is provided in the ascending passage 13 downstream of the heating heat exchanger 6 for blowing air passing through the heating heat exchanger 6 to the bypass passage 15 side. The ascending passage 13 on the downstream side of the airflow from the guide wall 2h is an air mixing chamber 17 for mixing the warm air passing through the heating heat exchanger 6 and the cool air passing through the bypass passage 15. The leading end of the rising passage 13 is branched into a defroster passage 20 having a defroster outlet 21, a vent passage 30 having a vent outlet 31, and a foot passage 40 having a foot outlet 41. The foot outlet 41 is open to the left and right side walls 2g, 2g of the unit case 2.

An arc-shaped upper wall 2f of the unit case 2 facing the air mixing chamber 17 has a defroster communication port 2 for communicating the defroster passage 20 with the air mixing chamber 17.
2. A vent communication port 32 for communicating the vent passage 30 with the air mixing chamber 17 and a foot communication port 42 for communicating the foot path 40 with the air mixing chamber 17 are arranged in this order from the scroll chamber 11 side. . In the air mix chamber 17, a mode door assembly 50 having a sliding mode door 51 is disposed at a branch portion of the rising passage 13.

The mode door 51 has an arcuate shape protruding downstream of the air flow. Then, by sliding along the arc-shaped upper wall 2f of the unit case 2 and opening and closing the defroster passage 20, the defroster outlet 21 is opened.
Open and close. Similarly, the vent outlet 31 is opened and closed by opening and closing the vent passage 30, and the foot outlet 41 is opened and closed by opening and closing the foot passage 40.

The mode door assembly 50 also includes a housing 52 which holds the mode door 51 so as to be slidable and can be assembled in the unit case 2. This housing 5
2, a mode door 51 is assembled,
A slide mechanism 53 that slides the mode door 51 by receiving a driving force from the driving unit K is also assembled.

When the mode door 51 and the slide mechanism 53 are assembled in the housing 52 in advance, the mode door assembly 50 is inserted through the mounting opening 18 provided on one of the left and right side walls 2g, 2g of the unit case 2. It is mounted in the unit case 2. This mounting port 18
The mode door assembly 50 also serves as an exit for allowing the mode door assembly 50 to escape from inside the unit case 2.
It is detachably mounted in the unit case 2.

FIG. 3 is an exploded perspective view showing the mode door and the housing. FIG. 4 is a sectional view taken along the line XX in an assembled state of the one shown in FIG. As shown in FIGS. 3 and 4,
The housing 52 includes an arc-shaped main plate 60 abutting on the inner wall surface of the upper wall 2 f of the unit case 2, and crescent-shaped side wall portions 7 provided on both left and right ends of the main plate 60 to reinforce the main plate.
0,70.

The main plate 60 includes a mode door assembly 50.
Defroster communication port 2 when installed in unit case 2
2 and a vent opening 62 arranged in conformity with the vent communication port 32.
And a foot opening 63 arranged in alignment with the foot communication port 42. These openings 61, 6
2 and 63, each opening 61, 62, 63
Reinforcing ribs 64 are provided for equally dividing and reinforcing the main plate 60.

The main plate 60 below the foot opening 63 is provided with a protruding portion 65 (see FIG. 1) that protrudes into the air passage 4 in the unit case 2. This protruding portion 65
The seal member 85 (FIG. 5)
Guide portions 66 for guiding the mode door 51 to which the mode door 51 is attached to the air passage 4 and for guiding the extension back. The protruding portion 65 excluding the guide portion 66 is a cutout portion 67 through which air flows while the mode door 51 does not protrude into the air passage 4.

The fitting portions 92 (see FIG. 1) of the pinion gears 91 (see FIG. 2) of the slide mechanism 53 are rotatably fitted to the substantially central portions of the side walls 70, 70 of the housing 52, respectively. A fitting hole 71 is provided. Each of the side walls 70 has an arc-shaped guide groove 72 for guiding the guide pin 82 of the mode door 51 to slide the mode door 51 along the main plate 60. Two guide grooves 73 for guiding 82 to the guide groove 72 are also formed.

The guide groove 82 holds the guide pin 82 at a predetermined position in the vent mode, the bilevel mode, the foot mode, the differential foot mode, and the defroster mode. The sealing member 85 of the mode door 51 is guided to the main plate 60 side.
(See FIG. 5) is pressed into contact with the inner wall surface of the main plate 60.
Are provided at predetermined positions.

The mode door 51 is provided with an arc-shaped door body 81 that is convex on the downstream side of the air flow, and two guide pins 82 that are respectively provided on both right and left end surfaces of the door body 81. The door body 81 has a door opening 83 for opening the defroster opening 61, the vent opening 62, and the foot opening 63 of the housing 52, and a closing for closing the defroster opening 61, the vent opening 62, and the foot opening 63. Part 84
Are provided. A sealing member 85 made of urethane foam or the like is attached to the entire outer peripheral surface of the closing portion 84.

On the inner peripheral surface of the mode door 51, crescent-shaped reinforcing ribs 86 are provided at two places, and at both left and right end portions of the inner peripheral surface, respectively, mesh with the pinion gear 91 of the slide mechanism 53 to form a pinion. A rack 87 for sliding the mode door 51 along the guide groove 72 by the rotation of the gear 91 is formed. In this rack 87, the height of the teeth at a predetermined position is slightly higher than the height of the teeth at other positions.

Thus, in the vent mode, the bi-level mode, the foot mode, the differential foot mode, and the defroster mode, the rack 87 cooperates with the pinion gear 91 so that the guide pin 82 is recessed in the guide groove 72. The seal member 85 of the mode door 51 is pressed into contact with the inner wall surface of the main plate 60 by entering the groove 74. When the mode door 51 is moved, the guide pin 82 is made to escape from the concave groove 74 of the guide groove 72 and the main plate 60 of the seal member 85 is moved.
The pressure contact with the inner wall surface is reduced, or the seal member 85 is slightly separated from the inner wall surface of the main plate 60 to enable the mode door 51 to slide.

As shown in FIG. 2, the slide mechanism 53 of the mode door assembly 50
A pair of pinion gears 91, 91 meshing with the shaft 7 and a rotating shaft 93 having a rectangular cross section for connecting and rotating the pair of pinion gears 91, 91 are provided. The pinion gear 91 is
The fitting portion 92 (see FIG. 1) is rotatably fitted in a fitting hole 71 of the housing 52 and is rotatably held in the fitting hole 71.

As shown in FIG. 1, one side wall 70 of both side walls 70, 70 of the housing 52 also serves as a lid member for closing the mounting opening 18 of the unit case 2. The fitting portion 92 of the pinion gear 91 fitted in the fitting hole 71 of the side wall portion 70 also serving as the lid member receives a driving force from the driving unit K via the rod-shaped body K1 of the driving unit K. A handle member 94 for rotating the rotation shaft 91 and the rotation shaft 93 is attached. The driving section K includes a small motor and is mounted on the side wall 2g of the unit case 2.

A gear is used in place of the rod K1 of the driving section K and the handle member 94, and the driving force of the driving section K is transmitted to the rotating shaft 93 of the slide mechanism 53 via the gear. May be. Further, the drive unit K is connected to the housing 52.
Is attached to the side wall portion 70 of the rotating shaft
May be directly rotated. Alternatively, the rotation shaft 93 can be manually operated through a link mechanism by a lever operation.
May be rotated.

FIG. 5 is a cross-sectional view of the main part in the vent mode of FIG. As shown in FIG. 5, the mode door 51 of the mode door assembly 50 is in the vent mode.
Opens the vent opening 62 of the housing 52, and opens the defroster opening 61 and the foot opening 63 of the housing 52.
The operation is controlled to close the valve. Therefore, in the vent mode, the air blown in the unit case 2 flows into the vent passage 30 from the vent opening 62 of the housing 52, and flows out of the unit case 2 from the vent outlet 31 through the vent passage 30.

In the vent mode, the mode door 51 does not protrude into the air passage 4 in the unit case 2 and is in a non-extending state in the air passage 4. For this reason, the air flow in the unit case 2 flows through the notch 67 of the housing 52 in the vent mode.

FIG. 6 is a sectional view of a main part in the bilevel mode. As shown in FIG. 6, in the bi-level mode,
The mode door 51 is provided with a vent opening 62 of a housing 52.
And the foot opening 63 are half-opened, and the operation is controlled to close the defroster opening 61 of the housing 52.
Therefore, in the bi-level mode, the unit case 2
The inside air flows into the vent passage 30 from the vent opening 62 of the housing 52, flows into the foot passage 40 from the foot opening 63 of the housing 52, and flows out of the unit case 2 through the vent passage 30. Along with
It also flows out of the unit case 2 from the foot outlet 41 through the foot passage 40.

The mode door 51 hardly protrudes into the air passage 4 in the unit case 2 in the bi-level mode. For this reason, the air flow in the unit case 2 flows through the notch 67 of the housing 52 in the vent mode.

FIG. 7 is a sectional view of a main part in the foot mode. As shown in FIG. 7, in the foot mode, the operation of the mode door 51 is controlled so as to open the foot opening 63 of the housing 52 and close the defroster opening 61 and the vent opening 62 of the housing 52. Therefore, in the foot mode, the air blown in the unit case 2 flows into the foot passage 40 from the foot opening 63 of the housing 52, and flows out of the unit case 2 from the foot outlet 41 through the foot passage 40.

In the foot mode, the mode door 5
1, the closing portion 84 on the lower end side protrudes into the air passage 4 on the bypass passage 15 side downstream of the bypass passage 15 and the heat exchanger 6 for heating, and blows air passing through the bypass passage 15 to the bypass passage 15 and The heat guide 6 is guided downstream of the heating heat exchanger 6 to the air passage 4 on the heating heat exchanger 6 side.

FIG. 8 is a sectional view of a main part in the defroster mode. As shown in FIG. 8, in the defroster mode,
The operation of the mode door 51 of the mode door assembly 50 is controlled such that the defroster opening 61 of the housing 52 is opened and the vent opening 62 and the foot opening 63 of the housing 52 are closed. Therefore, in the defroster mode, the air in the unit case 2 is
Flows into the defroster passage 20 through the defroster opening 61, and flows out of the unit case 2 from the defroster outlet 21 through the defroster passage 20.

In the defroster mode, the mode door 51 has a closed portion 84 at the lower end thereof and a part of the door opening 83, which are located downstream of the bypass passage 15 and the heat exchanger 6 for heating on the side of the bypass passage 15. The air blows through the air passage 4 and passes through the bypass passage 15 so that the door opening 83 circulates.

In the differential foot mode, as shown in FIG. 2, the mode door 51 of the mode door assembly 50 is
The defroster opening 61 and the foot opening 63 of the housing 52 are opened halfway, and the vent opening 62 of the housing 52 is opened.
The operation is controlled to close the motor. For this reason, in the differential foot mode, the air blown in the unit case 2 flows into the defroster passage 20 from the defroster opening 61 of the housing 52 and also flows into the foot passage 40 from the foot opening 63 of the housing 52, and Passage 2
0 to the unit case 2 from the defroster outlet 21
While flowing out, it also flows out of the unit case 2 through the foot passage 40 through the foot passage 40.

In the differential foot mode, similarly to the foot mode, the mode door 51 has the closing portion 84 at the lower end thereof located downstream of the bypass passage 15 and the heating heat exchanger 6 on the side of the bypass passage 15. The air blown to the air passage 4 and passed through the bypass passage 15 is guided to the air passage 4 on the heating heat exchanger 6 side downstream of the bypass passage 15 and the heating heat exchanger 6.

FIG. 9 is an exploded perspective view showing a main part of a second embodiment which is another example of the embodiment in which the first to third aspects of the present invention are implemented together. 10A and 10B are explanatory views schematically showing the operation of the apparatus shown in FIG. 9, wherein FIG. 10A is in a vent mode, FIG. 10B is a bilevel mode, FIG. 10C is a foot mode, and FIG. In the foot mode, (e) shows the defroster mode. In the following description of the second embodiment, the same components as those of the first embodiment are denoted by the same reference numerals, and the description overlapping with the description of the first embodiment will be omitted.

As shown in FIG. 9, in the second embodiment, the foot openings 63 of the housing 52 are provided on the left and right sides of the defroster opening 61, respectively. Therefore, the foot passage 40 of the unit case 2 is also connected to the defroster passage 2.
0 is provided on each of the left and right sides. Mode door 5
The one door opening 83 includes a pair of door openings 83 a and 83 a for the foot opening 63 and a door opening 83 b for the defroster opening 61. Door opening 83a
Are arranged on the left and right sides of the door opening 83b below the door opening 83b.

As shown in FIG. 10A, the mode door 51 of the mode door assembly 50 is in the vent mode.
Opens the vent opening 62 of the housing 52 and the defroster opening 61 of the housing 52 and the two foot openings 6.
The operation is controlled so as to close 3 and 63. Therefore, in the vent mode, the air blown in the unit case 2 flows from the vent opening 62 of the housing 52 into the vent passage 30 of the unit case 2, and the vent passage 30
Through the vent outlet 31 to the outside of the unit case 2.

As shown in FIG. 10B, the mode door 5 of the mode door assembly 50 is in the bi-level mode.
1 is controlled so that the vent opening 62 and the two foot openings 63 and 63 of the housing 52 are half opened, and the defroster opening 61 of the housing 52 is closed. For this reason, in the bi-level mode, the air blown in the unit case 2 flows into the vent passage 30 of the unit case 2 from the vent opening 62 of the housing 52, and the unit case 2 flows from both the foot openings 63, 63 of the housing 52. Flow out of the unit case 2 through the vent passage 30 and out of the unit case 2 through the vent passage 30, and also out of the unit case 2 through each foot passage 40 through the foot passage 41. Leaks to

As shown in FIG. 10C, the mode door 51 of the mode door assembly 50 is in the foot mode.
Is controlled so as to open both foot openings 63, 63 of the housing 52 and close the defroster opening 61 and the vent opening 62 of the housing 52. For this reason, in the foot mode, the air blown in the unit case 2 flows into the two foot passages 40, 40 of the unit case 2 from both the foot openings 63, 63 of the housing 52, and passes through the respective foot passages 40, so that each of the air blows. It flows out of the unit case 2 from the outlet 41.

As shown in FIG. 10D, at the time of the differential foot mode, the mode door 51 of the mode door assembly 50 opens the defroster opening 61 of the housing 52 and both the foot openings 63, 63 to the half-open state. The operation is controlled so as to close the 52 vent opening 62. Therefore, in case of the differential foot mode, the unit case 2
The inside air flows into the defroster passage 20 of the unit case 2 from the defroster opening 61 of the housing 52 and also flows into the two foot passages 40, 40 of the unit case 2 from both the foot openings 63, 63 of the housing 52. Through the defroster passage 20 and the defroster outlet 21
Out of the unit case 2, and also out of the unit case 2 through each foot passage 40 through each foot passage 40.

As shown in FIG. 10E, the mode door 5 of the mode door assembly 50 is in the defroster mode.
1 is controlled to open the defroster opening 61 of the housing 52 and close the vent opening 62 and both foot openings 63 of the housing 52. Therefore, in the defroster mode, the air blown in the unit case 2 flows into the defroster passage 20 of the unit case 2 from the defroster opening 61 of the housing 52, passes through the defroster passage 20, and flows out of the unit case 2 to the outside of the unit case 2. Leaks to

FIG. 11 is an explanatory view schematically showing the operation of a third embodiment, which is still another example of the embodiment in which the inventions of claims 1 to 3 are implemented together. In the vent mode, (b) shows the bilevel mode, (c) shows the foot mode, (d) shows the differential foot mode, and (e) shows the defroster mode. In the following description of the third embodiment, the same components as those of the first embodiment are denoted by the same reference numerals, and a description that is the same as that of the first embodiment will be omitted.

In the first embodiment, as shown in FIG. 3, a defroster opening 61 and a vent opening 6 of a housing 52 are provided.
2. The foot openings 63 are arranged in this order from above. On the other hand, in the third embodiment, as shown in FIG. 11, the defroster opening 61, the vent opening 62, and the foot opening 63 of the housing 52 are formed from above the defroster opening 61, the foot opening 63, and the vent opening. The parts 62 are arranged in this order. Therefore, in the third embodiment, the defroster passage 20, the vent passage 30, and the foot passage 40 of the unit case 2 are also arranged in the order of the defroster passage 20, the foot passage 40, and the vent passage 30 from the scroll chamber 11 side.

As shown in FIG. 11A, the mode door 51 of the mode door assembly 50 is in the vent mode.
Opens the vent opening 62 of the housing 52, and opens the defroster opening 61 and the foot opening 63 of the housing 52.
The operation is controlled to close the valve. For this reason, in the vent mode, the air blown in the unit case 2 flows into the vent passage 30 of the unit case 2 from the vent opening 62 of the housing 52, passes through the vent passage 30 and the vent outlet 31 to the outside of the unit case 2. Leaks to

As shown in FIG. 11B, in the bi-level mode, the mode door 5 of the mode door assembly 50 is
1 is controlled so that the vent opening 62 and the foot opening 63 of the housing 52 are half-opened, and the defroster opening 61 of the housing 52 is closed. For this reason, in the bi-level mode, the air blow in the unit case 2 is
While flowing into the vent passage 30 of the unit case 2 from the vent opening 62 of the housing 52,
Flows into the foot passage 40 of the unit case 2 from the foot opening 63 of the unit case 2, flows out of the unit case 2 from the vent outlet 31 through the vent passage 30, and also from the foot outlet 41 through the foot passage 40. It flows out of the unit case 2.

As shown in FIG. 11C, the mode door 51 of the mode door assembly 50 is in the foot mode.
Opens the foot opening 63 of the housing 52, and opens the defroster opening 61 and the vent opening 62 of the housing 52.
The operation is controlled to close the valve. For this reason, in the foot mode, the air blown in the unit case 2 flows into the foot passage 40 of the unit case 2 from the foot opening 63 of the housing 52, and passes through the foot passage 40 from the foot outlet 41 to the outside of the unit case 2. Leaks to

As shown in FIG. 11D, at the time of the differential foot mode, the mode door 51 of the mode door assembly 50 makes the defroster opening 61 and the foot opening 63 of the housing 52 half open, and vents the housing 52. The operation is controlled so as to close the opening 62. For this reason,
In the differential foot mode, the air blown in the unit case 2 flows from the defroster opening 61 of the housing 52 into the defroster passage 20 of the unit case 2, and also flows from the foot opening 63 of the housing 52 to the unit case 2.
And flows out of the unit case 2 from the defroster outlet 21 through the defroster passage 20 and the foot outlet 4 through the foot passage 40.
1 also flows out of the unit case 2.

As shown in FIG. 11E, the mode door 5 of the mode door assembly 50 is in the defroster mode.
1 is controlled to open the defroster opening 61 of the housing 52 and close the vent opening 62 and the foot opening 63 of the housing 52. For this reason, in the defroster mode, the air blow in the unit case 2 is
It flows into the defroster passage 20 of the unit case 2 from the defroster opening 61 of the housing 52, and flows out of the unit case 2 through the defroster outlet 21 through the defroster passage 20.

In the first to third embodiments described above, the air conditioning unit 1 for a vehicle includes the mode door assembly 50. This mode door assembly 50
Are mounted on a housing 52 which slidably holds a mode door 51, and a defroster outlet 21 of the unit case 2;
A mode door 51 that opens and closes the vent outlet 31 and the foot outlet 41 and a slide mechanism 53 that slides the mode door 51 by receiving a driving force from the driving unit K are assembled in advance. It is mounted in the unit case 2.

Therefore, in the air conditioning unit 1 for a vehicle, the mode door 51 and the slide mechanism 53 can be assembled to the unit case 2 at a stretch by mounting the mode door assembly 50 in the unit case 2. Moreover, the mode door assembly 50 can be mounted in the unit case 2 after the unit case 2 is assembled. Therefore, when the unit case 2 is assembled, it is not necessary to adjust the position of the mode door 51 and the slide mechanism 53. It can also be. Therefore, assembling workability of the vehicle air conditioning unit 1 is improved as compared with the conventional product shown in FIG. 12, and as a result, the cost of the vehicle air conditioning unit 1 can be reduced.

In addition, in the air conditioning unit 1 for an automobile, the mode door assembly 50 can be shared even when the shape of the unit case 2 is changed by changing the design on the vehicle side. However, it is possible to reduce the cost of the air conditioning unit 1 for a vehicle.
Further, the mode door 51 is used alone for the mode door assembly 50.
Can be guaranteed, the yield of the air conditioner unit 1 can be improved, and in this regard, the cost of the air conditioner unit 1 can be reduced.

In the air conditioning unit 1 for an automobile,
The mounting opening 18 of the unit case 2 also serves as an exit for allowing the mode door assembly 50 to escape from the inside of the unit case 2, and the mode door assembly 50 is detachably mounted in the unit case 2. For this reason, at the time of maintenance of the mode door assembly 50, the mode door assembly 50 can be taken out from the mounting opening 18 of the unit case 2 for maintenance. Therefore, disassembly and reassembly of the unit case 2 become unnecessary, and maintenance of the mode door assembly 50 becomes easy.

Similarly, in each of the first to third embodiments, the mode door assembly 50 is connected to the housing 5 that can be assembled into the unit case 2 through the mounting opening 18 of the unit case 2.
2 is provided. Therefore, by assembling the housing 52 into the unit case 2 from the mounting opening 18 of the unit case 2, the mode door 51 and the slide mechanism 53 previously assembled to the housing 52 can be assembled to the unit case 2 at a stretch. Moreover, since the mode door 51 and the slide mechanism 53 are assembled in the housing 52 in advance, the handling of the mode door 51 and the slide mechanism 53 is easy. Accordingly, the workability of assembling the air conditioning unit 1 for a vehicle is improved, and as a result,
The cost of the air conditioning unit 1 can be reduced.

In addition, the mode door assembly 50 can be applied to the air conditioning unit 1 for a vehicle having a different shape of the unit case 2 and has high versatility. In this respect, the cost of the air conditioning unit 1 for the vehicle can be reduced. Can be planned. Further, since the mode door 51 and the slide mechanism 53 are pre-assembled in the housing 52, the sliding movement of the mode door 51 can be ensured before assembling the air conditioning unit 1 for a vehicle. Therefore, the yield of the air conditioner 1 can be improved, and the cost of the air conditioner 1 can be reduced.

If the mode door 51, which opens and closes the defroster outlet 21, vent outlet 31, and foot outlet 41, is always slid along the unit case 2, the unit case 2 becomes large. Would.

However, in the first embodiment, the mode door 51 is in the foot mode, the defroster mode, and the differential mode.
At the time of the foot mode, it projects to the air passage 4 in the unit case 2. For this reason, the mode door 51 having a large opening / closing operation for opening and closing the defroster outlet 21, the vent outlet 31, and the foot outlet 41 can be accommodated in the unit case 2 while suppressing the expansion of the unit case 2. Accordingly, it is possible to reduce the size of the unit case 2 accommodating the mode door 51 having a large opening / closing operation.

Further, in the first embodiment, the mode door 5
In the foot mode and the differential foot mode, the air duct 1 projects from the bypass passage 15 and the air passage 4 on the side of the bypass passage 15 downstream of the heating heat exchanger 6 so that the bypass passage 1
The air passing through 5 is directed to the air passage 4 on the side of the heating heat exchanger 6 downstream of the bypass passage 15 and the heating heat exchanger 6. For this reason, in the foot mode, the differential
At the time of the foot mode, it is possible to promote the mixing of the cold air that has passed through the bypass passage 15 and the hot air that has passed through the heat exchanger 6 for heating.

In addition, in the first embodiment, the mode door 5
In 1, in the vent mode, the overhang to the air passage 4 is pulled back, and the air is not overhang to the air passage 4. For this reason, in the vent mode in which the air is distributed to the upper body of the passenger in the passenger compartment, it is possible to avoid an increase in the ventilation resistance due to the mode door 51 projecting into the ventilation path 4, and to maintain an increased air distribution amount into the passenger compartment. Can also. Therefore, it is possible to achieve both an increase in the amount of air distribution into the vehicle interior in the vent mode and a reduction in the size of the unit case 2.

In the first embodiment, the housing 52 of the mode door assembly 50 has a protruding portion 65 protruding into the air passage 4.
A guide portion 66 for guiding the overhang into the air passage 4 and pulling back of the overhang is provided, and a cutout portion 67 through which the air passes while the mode door 51 is not overhanging the air passage 4. For this reason, the protruding portion 65 of the housing 52
Air passage 4 of the mode door 51 while suppressing the increase in ventilation resistance
Overhang and pullback of the overhang can be performed reliably and stably.

In the first embodiment, the mode door assembly 50 is mounted in the unit case 2 through the mounting opening 18 of the unit case 2. However, the mode door assembly 50 according to claim 3 is not limited to a mode door assembly that is mounted in the unit case 2 from the mounting opening 18 of the unit case 2. Therefore, the mode door assembly 50 according to the third aspect may be, for example, a mode door assembly incorporated in the unit case 2 when assembling the unit case 2 divided into right and left.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a first embodiment.

FIG. 2 is a sectional view of the one shown in FIG.

FIG. 3 is an exploded perspective view showing a mode door and a housing shown in FIG.

FIG. 4 is a sectional view taken along the line XX in an assembled state of the one shown in FIG. 3;

FIG. 5 is a cross-sectional view of a main part in the vent mode of FIG.

FIG. 6 is a cross-sectional view of a main part of the device shown in FIG. 1 in a bilevel mode.

FIG. 7 is a cross-sectional view of a main part of the camera shown in FIG. 1 in a foot mode.

FIG. 8 is a cross-sectional view of a main part of the device shown in FIG. 1 in a defroster mode.

FIG. 9 is an exploded perspective view showing a main part of the second embodiment.

10 is an explanatory view schematically showing the operation of the apparatus shown in FIG. 9, (a) is in a vent mode, (b) is in a bi-level mode, (c) is in a foot mode, and (d) is a differential. In the foot mode, (e) shows the defroster mode.

11A and 11B are explanatory diagrams schematically showing an operation of the third embodiment, wherein FIG. 11A is a vent mode, FIG. 11B is a bilevel mode, FIG. 11C is a foot mode, and FIG. In the foot mode, (e) shows the defroster mode.

FIG. 12 is a sectional view of a main part showing an example of a conventional product.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air conditioning unit for automobiles 2 Unit case 4 Air blow path 5 Heat exchanger for cooling 6 Heat exchanger for heating 15 Bypass passage 16 Air mix door 18 Mounting port 21 Defroster outlet 31 Vent outlet 41 Foot outlet 50 Mode door assembly REFERENCE SIGNS LIST 51 mode door 52 housing 53 slide mechanism 65 projecting portion of housing 66 guide portion of projecting portion 67 cutout portion of projecting portion K drive unit

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masaharu Onda 5-24-15 Minamidai, Nakano-ku, Tokyo F-term (reference) in Calsonic Kansei Corporation 3L011 BJ02 CP00

Claims (7)

[Claims] A unit case (2) is provided with a defroster outlet (21), a vent outlet (31), and a foot outlet (41), and these outlets (2) are provided.
An air conditioning unit for a vehicle, to which a sliding mode door (51) for opening and closing at least one of the air outlets of (1, 31, 41) is mounted, and the mode door (51) is slidably held. A mode door assembly (50) in which a mode door (51) and a slide mechanism (53) that slides the mode door (51) by receiving a driving force from a driving unit (K) are pre-assembled in a housing (52). Wherein the mode door assembly (50) is mounted in the unit case (2) through a mounting port (18) provided in the unit case (2). 2. The air conditioning unit for an automobile according to claim 1, wherein the mode door assembly (50) is detachably mounted in the unit case (2), and the unit case (2).
An air conditioning unit for an automobile, characterized in that it can be taken out of the unit case (2) from the mounting opening (18) of the vehicle. 3. The air conditioning unit for an automobile according to claim 1, wherein the air passage (4) in the unit case (2) through which the air flows.
A cooling heat exchanger (5) for cooling the blast and a heating heat exchanger (6) for heating the blast passing through the cooling heat exchanger (5). A bypass passage (15) through which the blast passing through the heat exchanger (5) flows bypassing the heating heat exchanger (6); and a heat exchanger for heating the blast passing through the cooling heat exchanger (5) ( 6) and an air mix door (16) for adjusting the air distribution ratio to the bypass passage (15).
0) is a defroster outlet (21) and a vent outlet (3
1) A mode door (51) having a circular arc-like shape that is opened and closed by opening and closing the foot air outlet (41) and is downstream of the air blower is provided.
1) at least at the time of the foot mode, protrudes into the air passage (4) on the side of the bypass passage (15) downstream of the bypass passage (15) and the heat exchanger for heating (6) and passes through the bypass passage (15). Ventilation, bypass passage (15)
And the downstream of the heating heat exchanger (6) to the air passage (4) on the side of the heating heat exchanger (6).
The overhang to the air duct (4) is pulled back and the air duct (4)
An air conditioning unit for an automobile, wherein the air conditioning unit is not overhanging. 4. A vehicle air conditioning unit according to claim 3, wherein the housing of the mode door assembly is.
Has a protruding portion (65) protruding from the air passage (4),
The projecting portion (65) has a guide portion (66) for guiding the mode door (51) overhanging to the air passage (4) and pulling back the overhang, and the mode door (51) is connected to the air passage (4). Notch (6
(7) An air conditioner unit for an automobile, wherein 5. Opening and closing at least one of a defroster outlet (21), a vent outlet (31), and a foot outlet (41) provided in a unit case (2) of an air conditioning unit for a vehicle. Mode door to do (51)
A housing (52) slidably holding the mode door (51) and attachable to the unit case (2);
The mode door (51) receiving the driving force from the driving unit (K)
A mode door assembly for an air conditioning unit for an automobile, comprising: a slide mechanism (53) for sliding the air conditioner, wherein the slide mechanism (53) and the mode door (51) are pre-assembled in the housing (52). 6. The mode door assembly for an air conditioning unit for a vehicle according to claim 5, wherein the defroster outlet (21), the vent outlet (31), and the foot outlet (41) are opened / closed to the downstream side of the blower. A mode door (51) having a convex arc shape is provided.
At least in the foot mode, the air blows out to the air passage (4) in the unit case (2) through which the air flows, and in the vent mode, the air blows out to the air blow path (4) and is not extended to the air flow path (4). A mode door assembly for an air conditioning unit for a vehicle, comprising: 7. The mode door assembly for an air conditioning unit for a vehicle according to claim 6, wherein the housing (52) has a projecting portion (65) projecting into the air passage (4), and the projecting portion (65). ), A guide portion (66) for guiding the mode door (51) overhanging to the air passage (4) and pulling back the overhang, and the mode door (51) in a state where the mode door (51) is not overhanging the air passage (4). A mode door assembly for an air conditioning unit for a vehicle, comprising: a notch (67) through which air is passed.