JPH11151929A - Air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an operating mechanism without increasing the number of a servomotor by interlockedly operating a movable partition member and inside/outside air changeover doors by a specific number of electric driving means. SOLUTION: A first inside/outside air changeover door 30 and a second inside/outside air changeover door 31 are interlockedly operated by transmitting the power from a servomotor being one electric driving means through a link mechanism 50. A communicating door 15 is also operated by the servomotor, one electric driving means for driving the first and second inside/outside air changeover doors 30, 31. In this way, by interlockedly operating the communicating door 15 by using the servomotor 40 for driving the first inside/outside air changeover door 30 and the second inside/outside air changeover door 31, an operating mechanism of the communicating door 15 capable of being interlockedly operated by one servomotor can be obtained without increasing the number of the servomotor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for a vehicle, and more particularly to an air conditioner for blowing outside air to a window glass of a vehicle and blowing inside air to a foot of an occupant, thereby improving heating performance and ensuring anti-fog properties. The present invention relates to a two-layer unit in which a two-layer mode can be set.

[0002]

2. Description of the Related Art Conventionally, as the above-mentioned two-layer unit, there is one described in Japanese Patent Application Laid-Open No. 5-124426. In this conventional device, the inside of the air conditioning case is partitioned into two passages, an outside air passage and an inside air passage, and a defroster opening for blowing conditioned air to the defroster outlet is formed on the outside air passage side. ing. On the other hand, a face opening for blowing conditioned air to the face air outlet and a foot opening for blowing air to the foot air outlet are formed on the inside air passage side.

If the inside of the air-conditioning case is partitioned into an outside air passage and an inside air passage, the outside air passage may be blocked when air-conditioning air is blown only to the face outlet, due to the arrangement of the openings. The conditioned air that has flowed is not sent to the face outlet. Therefore, in this case, a communication door that connects the outside air passage and the inside air passage is disposed downstream of the heater core in the air. When the two-layer mode is performed, the communication door is used as a movable partition to form an outside air passage and an inside air passage.

[0004]

However, in the above-mentioned conventional apparatus, there is no description on the operation mechanism of the communication door. An object of the present invention is to prevent the number of servo motors from increasing by interlocking communication doors using a servo motor that drives another door member in a vehicle air conditioner in which the two-layer mode can be set. An object of the present invention is to provide a vehicle air conditioner.

[0005]

In order to achieve the above-mentioned object, according to any one of the first to fifth aspects of the present invention,
The movable partition member (15) and the inside / outside air switching door (3)
0, 31) is characterized in that they are operated in conjunction with one electric drive means (40).

Accordingly, the movable partition member is operated in conjunction with the electric drive means for driving the inside / outside air switching door, so that the number of electric drive means does not need to be increased.
According to the second aspect of the present invention, the electric driving means (4
0) to the movable partition member (15) and the inside / outside air switching doors (30, 31).
0), by operating the inside / outside air switching door through the link mechanism (50), the outside air mode in which only outside air is introduced into the air conditioning case (2), and the inside / outside air switching door by the link mechanism (50). By operating, the inside air mode in which only the inside air is introduced into the air conditioning case (2) can be set.
In the outside air mode and the inside air mode, the movable partition member (1
5) is operated by the electric drive means (40) to allow the two passages (13, 1, 1) to pass through the inside of the air conditioning case (2).
4) The partitioning action is eliminated, and the operation is performed so that the two passages communicate with each other.

Thus, the link mechanism enables not only the above-described two-layer mode but also the outside air mode and the inside air mode to be set, and furthermore, in these outside air mode and inside air mode, the partitioning action by the movable partition member can be eliminated. . According to the third aspect of the present invention, the first passage (13) is provided upstream of the air in the first passage (13).
3) an outside air introduction port (29) for introducing outside air to the outside, a first inside air introduction port (28) adjacent to the outside air introduction port (29) for introducing inside air to the first passage (13), A communication passage (3) that communicates the outside air inlet (29) with the second passage (14).
2) and a second passage (14) provided in the communication passage (32).
And a second inside air introduction port (26) for introducing inside air into the outside air introduction port (26).
9) a first inside / outside air switching door (30) for opening and closing the first inside air inlet (28), and a second inside / outside air switching door for opening and closing the communication passage (32) and the second inside air inlet (26). (31), and in the two-layer mode,
Opening the outside air introduction port (29) with the first inside / outside air switching door (30), closing the first inside air introduction port (28),
The communication path (32) is closed by the second inside / outside air switching door (31), and the second inside air introduction port (26) is opened. In the outside air mode, the first inside / outside air switching door (30) is used for the first inside / outside air switching door (30). Open the inside air inlet (28) and open the outside air inlet (2).
9) is closed, the communication path (32) is opened by the second inside / outside air switching door (31), and the second inside air introduction port (26).
And in the inside air mode, the first inside / outside air switching door (3
0), the first inside air inlet (26) is opened,
The outside air inlet (29) is closed, and the second inside / outside air switching door (3) is closed.
The method is characterized in that the communication path (32) is closed at 1) and the second inside air inlet (26) is opened.

In order to achieve the two-layer mode, two first and second inside / outside air switching doors are required.
According to the present invention, the three members, the first and second inside / outside air switching doors and the movable partition member, can be operated in conjunction with one electric drive means. In the invention according to claim 4,
An outlet mode switching door (1) provided downstream of the air conditioning case (2) for switching the location of the conditioned air in the vehicle compartment.
9 to 21), and the movable partition member (15) is a member independent of the blowout mode switching doors (19 to 21).

Thus, the inside / outside air mode and the blowing mode can be set independently of each other. In the invention according to claim 5, the air-mixing door (11) is provided in the air-conditioning case (2) and adjusts the temperature of the conditioned air by adjusting the mixing ratio of the cool air and the hot air. When the air mixing door (11) is in the maximum heating state for maximizing the temperature of the conditioned air, the mode is switched to the two-layer mode, and when the state of the air mixing door is released from the maximum heating state, the two-layer mode is switched to the outside air mode. It is characterized by switching to the mode.

By the way, when the air mixing door is in the maximum heating state as described above, the two-layer mode is set. When the state of the air mixing door is released from the maximum heating state, the air mixing door is switched to the outside air mode. If the movable partition member is operated in conjunction with the electric driving means for driving the door, the number of electric driving means can be reduced. However, in this case, in the defroster mode in which the conditioned air is blown to the inner surface of the window glass of the vehicle, only the outside air needs to be introduced into the air conditioning case. Even when the case does not need to be divided into two passages, the passage is partitioned. For this reason, there is a problem that the air mixing door and the movable partition member cannot be linked.

According to the fifth aspect of the present invention, by operating the inside / outside air switching door and the movable partition member in conjunction with each other, the inside of the air conditioning case is not partitioned into two passages in the defroster mode.

[0012]

(First Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings. The vehicle air conditioner of the present embodiment is applied to a vehicle such as a hybrid vehicle or a diesel engine vehicle, for example, in which it is difficult to obtain heat required for heating. FIG. 1 shows an overall configuration diagram of a vehicle air conditioner.

The vehicle air conditioner 1 includes an air conditioner case 2 forming an air passage into a vehicle interior. The air conditioning case 2 is roughly divided into an inside / outside air blowing unit 3 and a temperature control unit 4 in order from the air upstream side. The inside / outside air blowing unit 3 is for taking in inside air or outside air, or both inside and outside air into the air-conditioning case 2, and a blower 6 for generating an airflow toward the vehicle interior is disposed inside the inside / outside air blowing unit 3. ing. The direction shown in FIG. 1 represents the direction in which the inside and outside air blowing unit 3 is mounted on the vehicle, and the temperature control unit 4 is schematically shown regardless of the direction.

The blower 6 comprises a first fan 6a, a second fan 6b, and a blower motor 6c for rotating these fans 6a, 6b. The first fan 6a and the second fan 6b are integrally formed of resin, are centrifugal multi-blade fans, and are of a double suction type that sucks air from both sides in the axial direction. The first and second fans 6a, 6b are driven integrally by a blower motor 6c.

The first fan 6a and the second fan 6b are housed in a scroll-shaped scroll casing portion 22. In the scroll casing part 22, FIG.
As shown in FIG. 5, a partition plate 24 is provided, and the scroll plate 22 has two scroll cases 22a and 22b. The first fan 6a is disposed in the scroll case 22a, and the second fan 6b is
2b. Further, the interior of the scroll casing 22 is divided into the first passage 13 and the second passage 13 by the partition plate 24.
It is divided into a passage 14.

An outside air inlet 29 for introducing outside air into the inside of the first passage 13 is formed on the upstream side of the air. A first inside air introduction port 28 for introducing inside air into the inside is formed at a position adjacent to the outside air introduction port 29 on the upstream side of the air in the first passage 13.
The outside air introduction port 29 and the first inside air introduction port 28 are selectively opened and closed by a first inside / outside air switching door 30 which is an inside / outside air switching door by an opening / closing member.

The outside air inlet 29 communicates with the second passage 14 through a communication passage 32 as shown in FIG. The communication passage 32 has a second passage for introducing inside air into the second passage 14.
An inside air inlet 26 is formed. The communication passage 29 and the second inside air introduction port 28 are selectively opened and closed by a second inside / outside air switching door 31 which is an inside / outside air switching door by an opening / closing member.

The first inside / outside air switching door 30 has a rotating shaft 30a.
And a plate-shaped substrate portion 30b are integrally formed of resin. Although not shown, an elastic foam material such as urethane foam is adhered to both plate surfaces of the substrate portion 30b. The second inside / outside air switching door 31 also has the same configuration as the first inside / outside air switching door 30, and is formed by integrally forming a rotating shaft 31a and a plate-like substrate portion 31b with resin.

The first inside / outside air switching door 30 and the second inside / outside air switching door 31 are connected to a link mechanism 50 (described later), which receives power from a servo motor 40, which is one electric drive unit described later.
The information is transmitted through the device, so that the device can be operated in an interlocked manner. And the first and second inside / outside air switching doors 30, 31
In this example, the following three inside / outside air modes can be switched by the interlocking operation.

Outside Air Mode In the outside air mode, the first inside / outside air switching door 30 is set to the solid line position in FIG. 1, and the first inside / outside air switching door 30 opens the first inside air introduction port 28 and closes the outside air introduction port 29. I do. Further, the second inside / outside air switching door 31 is set to a broken line position in FIG. 1, the communication path 32 is opened by the second inside / outside air switching door 31, and the second inside air introduction port 26 is closed. Thus, in the outside air mode, the outside air from the outside air inlet 29 is taken into the first passage 13 as shown by an arrow A in FIG.
The outside air from the upstream portion of the outside air inlet 29 is taken into the second passage 14 through the communication passage 32 as shown by the arrow B in FIG. Thereby, only the outside air is introduced into the air conditioning case 2.

Inside air mode In the inside air mode, the first inside / outside air switching door 30 is set to the broken line position in FIG. 1, and the first inside / outside air switching door 30 opens the first inside air introduction port 28 and closes the outside air introduction port 29. I do. Also, the communication path 32 is closed by the second inside / outside air switching door 31 while the second inside / outside air switching door 31 is set to the solid line position in FIG. 1, and the second inside air introduction port 26 is opened. Thereby, in the inside air mode, the inside air from the first inside air inlet 28 is taken into the first passage 13 and the second inside air inlet 29
Is taken into the second passage 14.

In the two-layer mode, in the two-layer mode, the first inside / outside air switching door 30 is set to the solid line position in FIG.
The inside air inlet 28 is closed. Further, the communication path 32 is closed and the second inside air introduction port 26 is opened while the second inside / outside air switching door 31 is set to the solid line position in FIG. This allows
Outside air from the outside air introduction port 29 is taken into the first passage 13, and inside air from the second inside air introduction port 26 is taken into the second passage 14.

In the temperature control unit 4, an evaporator 7c for cooling the passing air is disposed so as to completely cover the air passage in the air conditioning case 2. The evaporator 7c is one component of a known refrigeration cycle device (not shown) mounted on the vehicle. In the temperature control unit 4, an air passage is divided by the partition plate 12 into the first passage 13 and the second passage 14. In the temperature control unit 4, a heater core 8 that heats the cool air that has passed through the evaporator 7c is provided so as to straddle the first passage 13 and the second passage 14. Heater core 8
Is a heat exchanger in which the cooling water of the engine flows inside, and the cooling water is heated using the cooling water as a heat source.

The heater core 8 is arranged in the air-conditioning case 2 so that a bypass passage (not shown) through which the cool air is bypassed is formed in the air-conditioning case 2.
That is, the heater core 8 is not provided in the entire area of the first passage 13 and the second passage 14, and in the present embodiment, the above-described bypass passage corresponding to the first passage 13 is provided on the upper side of the drawing.
The bypass passage corresponding to the second passage 14 is formed.

A rotary shaft 10 rotatably supported by the air conditioning case 2 is provided upstream of the heater core 8 in the air. The rotating shaft 10 has two plate-shaped air-mix doors 1 arranged in the axial direction such that their plate surfaces are the same.
1 are integrally connected. A servo motor 44 (see FIG. 2) as an electric driving means is connected to the rotating shaft 10.

The air mixing door 11 adjusts the ratio of the amount of cool air passing through the heater core 8 to the amount of cool air passing through the bypass passage depending on its stop position, thereby adjusting the mixing ratio of cool air and warm air, thereby achieving air conditioning. It functions as a temperature adjusting means for adjusting the temperature of the wind blown into the vehicle compartment for adjusting the temperature of the wind. Partition plate 12 downstream of heater core 8
Are interrupted on the way as shown in FIG. A communication passage 22 that connects the first passage 13 and the second passage 14 is formed on the downstream side of the interrupted partition plate 12 in the air. A communication door 15 as a movable partition member is provided in the communication passage 22. When the communication door 15 is operated to the position indicated by the broken line in FIG. 1, the communication passage 22 is closed, and the air conditioning case 2 is closed.
The inside is completely separated from the first passage 13 and the second passage 14. The communication door 22 is operated by a servomotor 40 as an electric driving means. That is, in this example, as described above, the first and second inside / outside air switching doors 30, 31 are provided.
The communication door 15 is operated in conjunction with one servomotor 40. The communication door 15
Also, the first inside / outside air switching door 30 and the second inside / outside air switching door 31
The rotation shaft 15a and the plate-like substrate portion 15
and b are integrally formed of resin.

The communication door 15 is a door member independent of blow-out mode switching doors 19 to 21 described later. A foot opening 16, a defroster opening 17, and a face opening 18 are formed in the air conditioning case 2 downstream of the heater core 8 in the air. Foot opening 1
Numeral 5 is for blowing the conditioned air toward the feet of the occupant, and the defroster opening 17 is for blowing the conditioned air toward the inner surface of a vehicle window glass (mainly a windshield) not shown. . The face opening 18
Is for sending air-conditioned wind toward the upper body of the occupant.

A foot door 19, a defroster door 20, and a face door 21 are provided at each upstream portion of each of the openings 16 to 18 as a blow mode switching device for switching a blow portion of the conditioned air in the vehicle cabin. Have been.
The foot door 19 is a door member that opens and closes the foot opening 16, and the defroster door 20 is a door member that opens and closes the defroster opening 17. Also,
The face door 21 is a door member that opens and closes the face opening 18.

The doors 18 to 20 are driven by servo motors 41 to 43 (see FIG. 2) as driving means. That is, by moving the servo motors 41 to 43, the doors 19 to 21 move so as to obtain a predetermined blowing mode. In the present embodiment, the setting of the blowout mode can be switched among five modes: a face mode, a bilevel mode, a foot mode, a foot differential mode, and a defroster mode.

The face mode is a mode in which the face opening 18 is opened by the face door 21 and the foot opening 1 is opened by the foot door 19.
6 and the defroster door 21 is closed by the defroster door 21. Thereby, the conditioned air is sent only to the face door 21.

Bi-level mode (B / L) In the bi-level mode, the face opening 18 is opened by the face door 21, the foot opening 16 is opened by the foot door 19, and the defroster opening is performed by the defroster door 21. The part 17 is closed. Thus, the conditioned air is blown toward the upper body and feet of the occupant.

Foot mode (Foot mode) In the foot mode, the face opening 18 is closed by the face door 21 and the foot opening 16 is closed by the foot door 19.
And the defroster opening 21 is slightly opened by the defroster door 21. As a result, about 80% of the conditioned air is blown toward the feet of the occupant, and the remaining 20% is blown toward the inner surface of the windshield.

Foot differential mode (F / D) In the foot differential mode, the face opening 18 is closed by the face door 21, the foot opening 16 is opened by the foot door 19, and the defroster opening is performed by the defroster door 21. The part 17 is opened. As a result, about 80% of the conditioned air is blown toward the feet of the occupant, and the remaining 20% is blown toward the inner surface of the windshield.

Defroster Mode (DEF) In the defroster mode, the face opening 18 is closed by the face door 21 and the foot opening 1 is closed by the foot door 19.
6, the defroster door 21 opens the defroster opening 17. Thereby, the conditioned air is sent only to the inner surface of the windshield.

In the defroster mode, the mode is switched only when a defroster switch (not shown) provided on the air conditioning operation panel 32 described later is operated. Next, the configuration of the control system of the present embodiment will be briefly described. FIG. 2 shows a configuration diagram of a control device 30 for controlling each of the air conditioners. The control device 30 is a well-known computer means, which is a CPU, an RO, which is an arithmetic processing device.
M, RAM and the like. The input terminal of the control device 30 is connected to a sensor group 31 for detecting an air conditioning information signal necessary for performing air conditioning control described later.

The sensor group 31 includes an inside air temperature sensor for detecting the temperature inside the vehicle, an outside air temperature sensor for detecting the temperature outside the vehicle, a solar radiation sensor for detecting the amount of solar radiation radiated into the vehicle interior, and an air conditioner immediately after passing through the evaporator 7c. It comprises a temperature sensor for detecting the temperature of the wind, a water temperature sensor for detecting the temperature of the engine cooling water flowing into the heater core, and the like. An air conditioning operation panel 32 provided on an instrument panel (not shown) in the vehicle compartment is connected to an input terminal of the control device 30, and an air conditioning information signal from the air conditioning operation panel 32 is transmitted to the control device 30. It is being sent. The air conditioning operation panel 32 is provided with a temperature setting device (not shown), a blow mode switching switch (not shown) for manually changing the blow mode, and an auto switch (not shown) for performing automatic air conditioning control based on the air conditioning information signal. I have.
Further, an inside / outside air switch (S) for manually setting the inside / outside air mode as shown in FIG.
W) 32a. The inside / outside air switch 32a sets the inside / outside air mode to either the inside air mode or the outside air mode, and the inside / outside air switch 32a cannot set the two-layer mode. ing.

On the other hand, the servo motors 40 to 44 and the blower motor 6c are connected to the output terminal of the control device 30. Next, control contents of the control device 30 will be briefly described. When the auto switch is turned on, the control device 30 calculates a target blowout temperature TAO of the conditioned air based on the air conditioning information such as the set temperature of the sensor group 31 and the temperature setting device. And this target outlet temperature TAO
Then, the application voltage of the blower motor 6c, that is, the air-conditioning air blowing amount, the inside / outside air mode, the blowing mode, and the target opening of the air mix door 11 are determined.

The specific blow-out mode is determined so that the target blow-out temperature TAO is changed from the lower to higher target blow-off temperature TAO into the face mode, the bi-level mode, the foot mode, and the foot differential mode. Further, the target opening degree is not determined only by the target outlet temperature TAO, but
The target opening degree SW is determined by the temperature detected by the water temperature sensor, the temperature detected by the temperature sensor, and the like. However, the tendency is determined such that the higher the target outlet temperature TAO, the smaller the amount of cool air flowing through the bypass passage and the larger the amount of air passing through the heater core 8.

In the present embodiment, when the target opening degree SW is equal to or larger than the predetermined numerical value SW1 (100%), the air mixing door 11 is in the maximum heating state in which all the cool air passing through the evaporator 7c is blown to the heater core 8. . When the target opening degree SW is calculated to be equal to or less than the predetermined numerical value SW2 (0%), the air mix door 11 is controlled to a position where all the cool air from the evaporator 7c passes through the bypass passage, and the temperature of the conditioned air is reduced. It becomes the maximum cooling state to decrease to the maximum. Then, while the target opening degree SW is between SW2 and SW1, the temperature control region is a region in which the cool air and the hot air are mixed to adjust the temperature of the conditioned air.

In the determination of the inside / outside air mode, when the target outlet temperature TAO is lower than the predetermined temperature, the inside air mode is set to improve the cooling capacity, and when the target outlet temperature TAO becomes higher than the predetermined temperature, the mode is switched to the outside air mode. Further, in this example, when the target opening degree SW is larger than SW1 and the air mixing door 11 is in the maximum heating state in which the temperature of the conditioned air is maximized, the inside / outside air mode is determined to be the outside air at the target blowing temperature TAO. Even in this case, the inside / outside air mode is switched to the two-layer mode. In the two-layer mode, when the target opening degree SW becomes smaller than SW1 and the state of the air mix door 11 is released from the maximum heating state, the mode is switched from the two-layer mode to the outside air mode.
That is, when the target opening degree SW is smaller than SW1, it means that the air conditioner itself has a surplus heating capacity. In this case, the inside / outside air mode is automatically switched to the outside air mode.

Next, a mechanical operation mechanism of the link mechanism 50, which is a main part of the present invention, will be described with reference to FIGS.
The link mechanism 50 is provided in a concentrated manner on one surface (vehicle left side) of the air conditioning case 2 in the inside / outside air blowing unit 3 on the vehicle width direction side. First, regarding the above-described servo motor 40, the servo motor 40 is actually housed in a case 40a formed of resin or the like.
3 to 5, the outline of the servo motor 40 is shown in a square shape, which shows the outline of the case portion 40a.

A servo motor 40 is provided in the case 40a.
A known potentiometer (not shown) for detecting the rotation angle of the link mechanism 50, that is, the operating position of the link mechanism 50, and a speed reduction mechanism (not shown) for reducing the rotation speed of the servomotor 40
And built-in. The final output shaft 40b of the reduction mechanism is
The link mechanism 50 is connected to the final output shaft 40b and protrudes outside the case 40a.
0 power is transmitted to the link mechanism 50. Note that the servomotor 40 is connected to the inside / outside air blowing unit 3.
Are attached to the outer surface of the air conditioning case 2 with screws or the like so as not to interfere with the link mechanism 50.

The link mechanism 50 is made of a resin-made 6
It comprises two link levers 51 to 56, two rods 57 and 58 formed of metal (for example, iron), and a control cable 59. The link lever 51 is formed in a substantially rectangular shape with resin or the like as shown in the figure, and is attached to the final output shaft 40b. Link lever 5
1 is connected to one end (upper left in FIG. 3) of a cylindrical connecting pin 51.
a is integrally formed, and the connecting pin 51 a is connected to the link lever 52. Specifically, a link groove 52a is formed in the link lever 52 as shown in the figure, and the connecting pin 51a is loosely fitted in the link groove 52a.

The link lever 52 is attached to the rotating shaft 30a of the first inside / outside air switching door 30, so that when the link lever 51 rotates, its power is transmitted to the link lever 52 and the first inside / outside air switching door. 30 rotates. The other end (lower right in FIG. 3) of the link lever 51 is branched into two to form branch portions 51A and 52B, and the branch portion 51A is integrally formed with a cylindrical connecting pin 51b.

The connecting pin 51b is loosely fitted in a link groove 53a formed in the link lever 53, whereby
When the link lever 51 rotates, the link lever 53 rotates. The link lever 53 is rotatably attached to the outer surface of the air conditioning case 2 of the inside / outside air blowing unit 3 by a tapping screw (not shown) or the like. In the drawing, 53b represents a part of a tapping screw serving as a rotation axis.

The link lever 53 has a connecting hole (not shown) into which one end of the rod 58 is loosely fitted. The other end of the rod 58 is connected to a link lever 55 as shown in the figure. The link lever 55 also has a connection hole similar to the above, and the other end of the rod 58 is loosely fitted in the connection hole. One end and the other end of the rod 58 are bent toward the back side of the paper in the figure, and the bent portion is inserted into the connection hole so that the rod 58 does not slip out of the connection hole. It has a simple structure. And the link lever 55
Is attached to the rotating shaft 31a of the second inside / outside air switching door 31, so that when the rod 55 moves, the second inside / outside air switching door 31 rotates.

A connecting hole (not shown) into which one end of the rod 57 is loosely fitted is formed in the branch portion 51B.
The other end of the rod 57 is connected to the link lever 5 as shown in the figure.
4. One end and the other end of the rod 57 are bent toward the back side of the paper in the figure, and the bent portion is inserted into the connection hole so that the rod 57 does not slip out of the connection hole. It has a simple structure.

The link lever 54 is rotatably mounted on the outer surface of the air conditioning case 2 of the inside / outside air blowing unit 3 by a tapping screw (not shown) or the like. In addition,
In the figure, reference numeral 54b denotes a part of the tapping screw serving as a rotation axis. Further, the link lever 54 is integrally formed with a cylindrical connecting pin 54a. Connecting pin 54a
Is connected to one end of a control cable 59. Here, the control cable 59 is made of a flexible pipe-shaped cover 6 made of resin as shown in the figure.
0, and an iron wire 80 made of iron inserted into the cover portion 60. The cover part 60 is held on the outer surface of the air-conditioning case 2 at a plurality of parts by a clamp part 61 as shown in the figure.

One end of the wire 80 is bent to form a circular fitting portion 62. The fitting portion 62 is loosely fitted to the connecting pin 54a. Wire 8
A fitting portion 63 having a shape similar to that of the fitting portion 62 is formed at the other end of the link 0, and the link lever 56 is integrally formed with a connecting pin 56 a that fits loosely with the fitting portion 63.

The link mechanism 50 is configured as described above. Next, the operation of the link mechanism 50 will be described. FIG. 3 is a diagram illustrating the state of the link mechanism 50 in the outside air mode, and FIG. 4 is a diagram illustrating the state of the link mechanism 50 in the two-layer mode. FIG. 5 is a diagram showing a state in which the link mechanism 50 is in the inside air mode. Hereinafter, description will be made with reference to the outside air mode.

When the mode is switched from the outside air mode shown in FIG. 3 to the two-layer mode, the servo motor 40 in FIG. 3 is rotated by a predetermined amount in the direction of arrow E in FIG. Then, as shown in FIG. 4, the link lever 51 rotates clockwise, and the connecting pin 51a moves along the link groove 52a. In this case, the shape of the link groove 52a follows the movement locus of the connecting pin 51a. Therefore, the link lever 52 and the first inside / outside air switching door 30 do not rotate.

On the other hand, since the connecting pin 51b rotates with the rotation of the link lever 51, the link lever 53
Is rotated counterclockwise to the state shown in FIG. Then, the rod 58 connected to the link lever 53 is pulled, and the link lever 55 moves counterclockwise.
As a result, the second inside / outside air switching door 31 is rotated as shown in FIG. 4 to a position indicated by the solid line in FIG. 1, closes the communication passage 32 and opens the second inside air introduction port 26.

When the link lever 51 rotates, the rod 57 is pushed in, whereby the link lever 54 rotates counterclockwise. Then, the wire 80 moves so as to extend, and the link lever 56 and the communication door 15 rotate counterclockwise. As a result, the communication door 15 is
1 to the broken line position in FIG. 1 and closes the communication passage 22 to form the first passage 13 as a movable partition member.
And the second passage 14.

As described above, the mode is switched from the outside air mode to the two-layer mode. Next, when switching from the two-layer mode to the inside air mode, the servo motor 40 is further rotated from the state shown in FIG. Then
As shown in FIG. 4, the link lever 51 pivots clockwise, the connecting pin 51a engages with the inner surface of the link groove 52a,
An operating force for driving the link lever 52 in a counterclockwise direction in FIG. 4 is transmitted. Then, the link lever 52 and the first inside / outside air switching door 30 rotate, and the first inside / outside air switching door 30 closes the outside air inlet 29 as shown in FIG. That is, the first inside / outside air switching door 30 is turned to the position indicated by the broken line in FIG.

On the other hand, with the rotation of the link lever 51, the connecting pin 51b moves along the link groove 53a. However, in this case, the shape of the link groove 53a is
, The link lever 53 and the second inside / outside air switching door 31 do not rotate, and the second inside / outside air switching door 31 is in the same rotating position as in the two-layer mode.

When the link lever 51 rotates, the rod 57 is retracted, whereby the link lever 54 rotates clockwise. Then, the wire 80 is retracted and moved, and the link lever 56 and the communication door 15 rotate clockwise. As a result, the communication door 15 is rotated as shown in FIG.
With the opening of 2, the partitioning action disappears. That is, in the outside air mode and the inside air mode, the communication door 32
Is operated by the servomotor 40, the partitioning action for partitioning the inside of the air-conditioning case 2 into the first passage 13 and the second passage 14 disappears, and the operation is performed so that these passages 13 and 14 communicate with each other. When the mode is switched from the inside air mode to the two-layer mode or the outside air introduction mode, the above operation is performed in reverse, and the description is omitted here.

As described above, in this example, the communication door 1
5 is operated by using the servomotors 40 for driving the first and second inside / outside air switching doors 30 and 31, so that the number of servomotors does not need to be increased, so that one servomotor 40 can be used for the interlocking operation. it can. In addition, Japanese Patent Application Laid-Open No. 5-12444
It is also conceivable to reduce the number of parts by using the communication door 15 also as a blow-out mode switching door, as described in Japanese Patent Publication No. 26 (1993). However, if such a thing is performed in this example, the inside / outside air mode and the blowing mode are linked, and the inside / outside air mode and the blowing mode cannot be set independently. Therefore, in this example, since the communication door 15 is a door member independent of the outlet mode switching doors 19 to 21 as described above, the inside / outside air mode and the outlet mode can be set independently.

In this embodiment, when the air mixing door 11 is in the maximum heating state as described above, the two-layer mode is set. When the state of the air mixing door 11 is released from the maximum heating state, the mode is switched to the outside air mode. I did it. Therefore, the servo motor 44 that drives the air mix door 11
By operating the communication door 15 in an interlocked manner, the number of servomotors can be reduced.

However, in this case, in the defroster mode, only the outside air needs to be introduced into the air conditioning case 2. However, when the air conditioner 2 is in the maximum heating state in the defroster mode, the air conditioning case 2 is connected to two passages. Even when there is no need to partition, the passage is partitioned, and in this example, the second passage 1
The conditioned air blown to 4 is not blown to the defroster opening 17. Therefore, the air mix door 11 and the communication door 15 cannot be linked. Therefore, in this example, the first and second inside / outside air switching doors 30 and 31 and the communication door 1 are connected.
By operating the air conditioner 5 and the air conditioner 5, the interior of the air conditioning case 2 is not partitioned into two passages in the defroster mode.

In this example, when the first and second inside / outside air switching doors 30 and 31 are switched from the two-layer mode to the outside air mode, for example, there is a sufficient working stroke.
By operating the second inside / outside air switching doors 30, 31 and the communication door 15 in an interlocked manner, the operating force for driving the communication door 15 is not increased more than necessary. (Second Embodiment) In the present embodiment, not a two-layer unit in which a two-layer mode can be set as in the first embodiment,
The inside of the air conditioning case 2 is not partitioned into two passages. FIG. 6 shows an overall configuration diagram of the vehicle air conditioner of this example.

The feature of this example is that the air mix door 1
There is an interlock between the operating position of No. 1 and the blowing mode. One end of a control cable 60 similar to the control cable 59 is connected to the rotation shaft 11a of the air mix door 11 via a link lever (not shown). The other end of the control cable 60 is connected to the air conditioning operation panel 32.

To explain the specific structure, the air conditioning operation panel 32 is provided with a temperature adjusting lever 71 for operating the operating position of the air mix door 11. The temperature adjusting lever 71 is operable as indicated by an arrow in FIG. And the other end of the control cable 60 is
The air mix door 11 is connected to the temperature adjusting lever 71, and by operating the temperature adjusting lever 71, the air mix door 11 rotates between the maximum heating state and the maximum cooling state.

A blow mode switch circuit 66 is provided on the back of the air conditioning operation panel 32. The blow mode switch circuit 66 generates a blow mode signal corresponding to the operating position of the temperature adjusting lever 71. It has become. The details will be described later. As shown in FIG. 7 (design surface of the air-conditioning operation panel 32), the air-conditioning operation panel 32 is provided with various switches in addition to the temperature adjustment lever 71. Reference numeral 32a denotes an inside / outside air switch, which is operated to move left and right in FIG. The inside / outside air switch 32a is for manually switching between the inside air mode and the outside air mode, and outputs an inside air control signal and an inside / outside air control signal to a control device (not shown) according to the operation position. The control device controls a servo motor (not shown) that drives the inside / outside air switching door 26 in accordance with the signal.

Reference numeral 72 denotes an air volume switch for manually setting the air volume of the conditioned air, and is operated to move left and right in FIG. When the air volume switch 72 is at an operation position other than OFF, a compressor (not shown) of the air conditioning refrigeration cycle can be driven. An A / C switch 73 determines whether to drive or stop the compressor.

Reference numeral 64 denotes an F / D switch for setting the blowing mode to the foot differential mode, and reference numeral 65 denotes a differential switch for setting the blowing mode to the defroster mode. FIG. 8 shows the blow mode switch circuit 66.
FIG. As shown in FIG. 8, fixed switch contacts 67 to 69 corresponding to each blowing mode are provided. Any one of these fixed switch contacts 67 to 69 is electrically connected to the movable switch contact 70,
The servo motor 81 for switching the blowing mode is controlled to a predetermined position. In addition, the servo motor 81
A link mechanism 50 indicated by 50 in FIG. 6 is connected to the blowout mode switching door 1 via the link mechanism 50.
9 to 21 are operated.

That is, the movable switch contact 70 is provided on the temperature adjusting lever 71,
By operating 1, the blowing mode is automatically switched. Specifically, when the temperature adjustment lever 71 is within the operation range a in FIG. 7, that is, when the temperature of the conditioned air is low and the vehicle interior is cooled, the blowout mode is set to the face mode. When the temperature adjustment lever 71 is within the operating range a in FIG. 7, that is, when the temperature of the conditioned air is neither high nor low, the blow mode is the face mode. Also, the temperature adjustment lever 7
When 1 is within the operating range c in FIG. 7, that is, when the temperature of the conditioned air is high and the vehicle interior is heated, the blowing mode is the foot mode.

That is, since the relationship between the operating position of the air mix door 11 and the blowing mode has a correlation, in this example, the operating position of the temperature adjusting lever 71 and the blowing mode are linked based on this relationship. . Thereby, the air-conditioning operation mechanism can be simplified. Further, when the occupant fogs the window, if the F / D switch 64 or the differential switch 65 is operated, the blowing mode can be set to the foot differential mode or the defroster mode according to the operation.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a vehicle air conditioner according to a first embodiment of the present invention.

FIG. 2 is a diagram illustrating a configuration of a control system according to the first embodiment.

FIG. 3 is an operation diagram of a link mechanism 50 according to the first embodiment.

FIG. 4 is an operation diagram of the link mechanism 50 in the first embodiment.

FIG. 5 is an operation diagram of the link mechanism 50 in the first embodiment.

FIG. 6 is a configuration diagram of a vehicle air conditioner according to a second embodiment.

FIG. 7 is a front view of an air conditioning operation panel 32 according to a second embodiment.

FIG. 8 is a configuration diagram of a blowing mode switch circuit 66 according to the second embodiment.

[Explanation of symbols]

2: air conditioning case, 13: first passage, 14: second passage, 1
5: communication door, 30: first inside / outside air switching door, 31: second
Inside / outside air switching door, 40 ... servo motor.

Claims (5)

[Claims] A movable partition member (15) provided in an air-conditioning case (2) is operated to move the inside of the air-conditioning case (2) into two passages of a first and a second passage (13, 14). The inside and outside air switching door (30, 3
By operating 1), outside air is introduced into the first passage (13), the outside air is blown to the inner surface of the vehicle window glass, and the inside air is introduced into the second passage (14), thereby forming the inside air. A two-layer mode in which air can be blown to the feet of the occupant. The air conditioner for a vehicle, comprising: the movable partition member (15) and the inside / outside air switching door (3).
0, 31) is an air conditioner for a vehicle, which is operated in conjunction with one electric drive means (40). 2. A link mechanism (50) for transmitting power from the electric drive means (40) to the movable partition member (15) and the inside / outside air switching doors (30, 31). By operating the inside / outside air switching door through (50), an outside air mode in which only outside air is introduced into the air conditioning case (2), and the inside / outside air switching door (30, 31) by the link mechanism (50). By operating, the inside air mode in which only the inside air is introduced into the air conditioning case (2) can be set. In the outside air mode and the inside air mode, the movable partition member (15) The air-conditioning case (2) is operated by the dynamic driving means (40) so that
The partitioning action that separates the two passages (13, 14) disappears,
The vehicle air conditioner according to claim 1, wherein the air conditioner is operated so as to communicate the two passages. 3. An outside air inlet (29) provided upstream of the first passage (13) for introducing air into the first passage (13), and an outside air inlet (29). Adjacent to the first passage (1)
A first inside air inlet (28) for introducing inside air to 3).
A communication path (32) communicating the outside air inlet (29) with the second path (14); and a second path (14) provided in the communication path (32).
A second inside air introduction port (26) for introducing inside air to the inside, and the inside / outside air switching door (30, 31) is provided with the outside air introduction port (29) and the first inside air introduction port (28). And a second inside / outside air switching door (31) for opening / closing the communication passage (32) and the second inside air introduction port (26). In the two-layer mode, the first inside / outside air switching door (30)
At the same time, the outside air introduction port (29) is opened, the first inside air introduction port (28) is closed, and the communication path (32) is closed with the second inside / outside air switching door (31). The second inside air introduction port (26) is opened, and in the outside air mode, the first inside / outside air switching door (30)
The first inside air introduction port (28) is opened at
Closing the outside air inlet (29), opening the communication passage (32) with the second inside / outside air switching door (31), and closing the second inside air inlet (26); Then, the first inside / outside air switching door (30)
The first inside air inlet (26) is opened at
The outside air introduction port (29) is closed, the communication path (32) is closed by the second inside / outside air switching door (31), and the second inside air introduction port (26) is opened. The vehicle air conditioner according to claim 2. 4. A movable partition member (15) provided at an air downstream side of the air conditioning case (2), and having a blow mode switching door (19 to 21) for switching a blowout part of a conditioned air in a vehicle cabin. The air conditioner for a vehicle according to any one of claims 1 to 3, wherein the member is a member independent of the blow mode switching doors (19 to 21). 5. An air mix door (11) provided in the air conditioning case (2) for adjusting a temperature of conditioned air by adjusting a mixing ratio of cold air and hot air. When the door (11) is in the maximum heating state in which the temperature of the conditioned air is maximized, the mode is switched to the two-layer mode. When the state of the air mix door is released from the maximum heating state, the outside air is switched from the two-layer mode to the outside air mode. The vehicle air conditioner according to claim 2 or 3, wherein the mode is switched to a mode.