JPH04221220A - Air conditioner device for vehicle - Google Patents

Abstract

PURPOSE:To shorten the time to the establishment of the differential mode. CONSTITUTION:In the conventional blow-out mode, one more differential mode is provided, and the blow-out mode pattern is formed in the order of the differential mode 2, vent mode, high level mode, heating mode, heating differential mode, and the differential mode 1. Further, the present position of a film damper is detected by a potentiometer, and when a blow-out mode setting part instructs on the differential mode, the differential mode at the closer position is always selected. Accordingly, if the present position detected by the potentiometer is in the vent mode or bye level mode, the differential 2 mode is selected, and the film damper is shifted to this direction, while, if the present position detected by the potentiometer is in the heating mode or heating differential made, the differential 1 mode is selected, and the film damper is shifted to this direction.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner.

0002

[Prior Art] Conventionally, a flexible membrane-like member has been used as an air outlet switching mechanism for this type of vehicle air conditioner, as disclosed in Japanese Patent Laid-Open No. 64-85809, for example. It has been known. The mode pattern of the outlet switching mechanism is generally formed in the order of vent mode, bilevel mode, heat mode, heat differential mode, and differential mode. .

0003

[Problems to be Solved by the Invention] By the way, when driving a car or the like, the window glass may suddenly become foggy. In such a case, in order to ensure visibility for the occupants, it is necessary to quickly remove the fog by setting the air outlet switching mechanism to the differential mode. However, in the conventional mode pattern described above, the differential mode and the vent mode are located at the ends of each other. Therefore, the passenger must switch from vent mode to differential mode in an emergency.
When switching to differential mode, the amount of movement of the flexible membrane member is large, so it is not possible to switch to differential mode quickly.
There is a problem in that visibility remains obstructed for a long time.

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, it is an object of the present invention to quickly establish a differential mode.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a vent outlet provided for blowing air toward the upper body of a passenger, and a vent outlet provided for blowing air toward the window glass of a vehicle. The differential air outlet installed in
and a case for storing a vehicle air conditioner, which is equipped with three or more air outlets, including a heat outlet provided for blowing air toward the feet of an occupant; a membrane member disposed movably along the opening surface of the outlet, having two or more openings that can face the differential air outlet, and switching between opening and blocking of each air outlet; a position confirmation means for confirming the current position of the member; a moving means for moving the membrane member; a vent mode in which the opening of the membrane member faces the vent outlet; When selecting a differential mode in which the differential air outlet faces the differential air outlet, and a heat mode in which the opening of the membrane member faces the heat air outlet, the differential mode is selected. , Select the opening closest to the differential air outlet among the openings for obtaining the differential mode based on the current position signal from the position confirmation means, and select the opening closest to the differential air outlet so that the opening faces the differential air outlet. The gist of the present invention is a vehicle air conditioner comprising a control means for outputting a signal for moving the membrane member to the moving means.

[0006]

[Operation] A part of the case that houses the vehicle air conditioner has three or more air outlets, including a differential air outlet, a vent air outlet, and a heat air outlet, for blowing air toward the vehicle interior. will be established. A membrane member having two or more openings that can face the differential air outlet is disposed so as to be movable along the opening surfaces of the three or more air outlets. Then, the position confirmation means confirms the current position of the membrane member and sends a current position signal to the control means. Based on the signal, the control means selects the opening closest to the differential air outlet among the openings for obtaining the differential mode, and moves the membrane member so that the opening faces the differential air outlet. Send the signal to the means of transportation. The moving means moves the membrane member based on the signal, and stops the membrane member when the differential mode is established.

[0007]

[Embodiment] A first embodiment of the present invention will be described below with reference to FIGS. 1 to 8.
The explanation will be based on. First, the configuration of the air conditioner unit used in the first embodiment will be explained based on FIG. 1. Note that FIG. 1 is a sectional view showing a cross section of a vehicle air conditioner. The vehicle air conditioner 1 is arranged on the back side of the instrumental panel and approximately in the center of the vehicle. The duct 2 serves to house the vehicle air conditioner 1. A blower 3 for feeding air into the duct 2 is provided at the most upstream portion of the duct 2. Downstream of blower 3,
Almost in the center of duct 2 is an evaporator that cools the air.
4 is provided. In the downstream part of the evaporator 4,
A heater core 5 that heats air using engine cooling water as a heat source is provided perpendicularly to the evaporator 4. Further, one end of the heater core 5 is fixed to the duct 2.

The first passage 6 is formed upstream of the heater core 5, and the air passing through the first passage 6 flows through the heater core 5 and is heated. The second passage 7 is a passage through which air cooled by the evaporator 4 bypasses the first passage 6. On the downstream side of the evaporator 4 and at the bottom of the duct 2, a first winding shaft 8 is rotatably fixed to the duct 2. Further, the first electric motor 9 is connected to the end of the first winding shaft 8 on the back side in the figure, and drives the first winding shaft 8. Also, on the downstream side of the evaporator 4 and the evaporator 4
A second winding shaft 10 is rotatably fixed to the duct 2 at a position facing the upper end of the winding shaft 10 . Further, when the first electric motor 9 drives the first winding shaft 8, the first winding shaft 8 and the second winding shaft 10 rotate at exactly the same period.
The first winding shaft 8 and the second winding shaft 10 are connected by a belt (not shown).

The first film damper 11 is flexible and has one end connected to the first winding shaft 8 with a screw, and the other end connected to the second winding shaft 10 with a screw. The first film damper 11 is stretched from the first passage 6 to the second passage 7 and is in contact with the side surface of the heater core 5 on the evaporator 4 side. Further, a vent outlet 12 is provided at the most downstream portion of the duct 2 to blow out conditioned air toward the upper body of the occupant. Similarly, at the most downstream part of the duct 2, adjacent to the blower 3 side of the vent outlet 12, there is provided a differential outlet 13 that blows out conditioned air toward the windshield. Further, the duct 2 immediately downstream of the vent outlet 12 is provided with a heat outlet 14 that blows out conditioned air toward the feet of the occupant.

A third winding shaft 15 is rotatably connected to the duct 2 at the end of the differential air outlet 13 on the side of the blower 3 and inside the duct 2.
Fixed. The second electric motor 16 is connected to the end of the third winding shaft 15 on the back side in the figure, and drives the third winding shaft 15. Further, at the end of the heat outlet 14 on the side of the heater core 5, a fourth
A winding shaft 17 is rotatably fixed to the duct 2. Further, when the second electric motor 16 drives the third winding shaft 15, the third winding shaft 15 and the fourth winding shaft 17 are rotated at exactly the same period. and the fourth winding shaft 17 are connected by a belt (not shown).

Further, inside the duct 2 located between the vent outlet 12 and the differential outlet 13, a first shaft 1 is provided.
8 is rotatably fixed to the duct 2. Further, inside the duct 2 located between the vent outlet 12 and the heat outlet 14, a second shaft 19 is rotatably fixed to the duct 2. The second film damper 20 is flexible, and one end thereof is connected to the third winding shaft 15 with a screw.
The other end is connected to the fourth winding shaft 17 with a screw. The second film damper 20 passes through the gap between the first shaft 18 and the duct 2 and the gap between the second shaft 19 and the duct 2, thereby allowing the differential air outlet 13, the vent outlet 12, and the heat It extends across the air outlet 14.

A third shaft 21 is rotatably fixed to the duct 2 at an upper portion immediately downstream of the evaporator 4. The cold air bypass plate damper 22 has one end fixed to the third shaft 21 and is installed to open and close the cold air bypass 23 with the third shaft 21 as an axis. Note that the cold air bypass plate damper 22 opens to the dashed line in FIG. 1 only during maximum cooling.

FIG. 2 is an explanatory diagram showing the relationship between the opening of the second film damper 20 and the air outlet in each air blowing mode. Here, the blowout modes in the first embodiment are arranged in the order of differential 2, vent, bilevel, heat, heat differential, and differential 1. Second film damper 20
has a first opening 24 and a second opening 25 as shown in FIG. In the differential 2 mode, the second opening 25 opens the entire differential air outlet 13 and slightly opens the vent air outlet 14. In addition, in the vent mode, the second opening 25
In the bilevel mode, the second opening 25 opens about half of the vent outlets 14 and half of the heat outlets 15, respectively. In the heat mode, the first opening 24 opens the differential air outlet 13 a little, and the second opening 25 opens the entire heat air outlet 15. In addition, in the heat differential mode, the first opening 24
opens the differential air outlet 13 halfway, and the second opening 25 opens the
The outlet 15 is opened halfway. In the differential 1 mode, the first opening 24 opens the entire differential air outlet 13.

Next, the structure of the differential air outlet 13 and the positional relationship between the differential air outlet 13 and the second film damper 20 are as follows.
This will be explained based on FIGS. 3 to 5. FIG. 3 is a partial top view of the differential air outlet 13 when viewed from the direction of arrow III in FIG. As shown in FIG. 3, three gratings 131, 132, and 133 are provided in the differential air outlet 13 section. Further, the second film damper 20 is located on the back side in the figure, and the second film damper 20 is
The second opening 25 of the film damper 20 is the differential air outlet 13
It is located on the right side of the figure.

FIG. 4 is a cross-sectional view taken along line AA in FIG. 3. As shown in FIG. 4, stepped portions 134, 135 are provided on the left and right sides of the differential air outlet 13 in the drawing.
The part is made slightly thicker. The second film damper 20 is stretched so as to slide in contact with the stepped portions 134 and 135. FIG. 5 is a sectional view taken along the line B--B in FIG. 3. As shown in FIG. 5, gratings 131, 132, and 133
The step portions 136 and 137 are also made to have the same thickness. And the second film damper 20 has gratings 131, 132, 1
33, step portion 136, and step portion 137 so as to slide in contact with each other.

The structure of the differential air outlet 13 and the positional relationship between the differential air outlet 13 and the second film damper 20 have been explained above, but the vent air outlet 12 and the heat air outlet 14 are also It has the same structure as the 13th outlet. In addition, the positional relationship between the vent outlet 12 and the second film damper 20,
The positional relationship between the heat outlet 14 and the second film damper 20 is also the same as the positional relationship between the differential outlet 13 and the second film damper 20, respectively.

FIG. 6 is a block diagram schematically showing the configuration of the first embodiment. Note that the solid line arrows in FIG. 6 indicate the flow of electrical signals, and the dotted line arrows in FIG. 6 indicate mechanical interlocking relationships. The power assist controller 26 controls the second
The energization of the second electric motor 16 is controlled so that the electric motor 16 rotates forward, rotates backward, or stops rotating.

The blowout mode setting section 27 determines the setting state of the blowout mode setting switch provided on the operation panel inside the vehicle.
Alternatively, a selection signal for the blowout mode is generated according to the output state of a sensor that detects the environmental conditions inside the vehicle such as the indoor temperature, indoor humidity, or amount of solar radiation, and this selection signal is sent to a microcomputer 28 (described later). send. There are five selection signals: 1001 for venting, 0111 for bi-level, 0101 for heat, 0011 for heat differential, and 0000 for differential. There is.

The microcomputer 28 has a mode detection function 281, a control function 282, and a determination function 283. The mode detection function 281 includes the blowout mode setting section 27
Detects the selection signal of the blowing mode outputted from the controller 200, determines the target position signal of the second film damper 20 corresponding to the selection signal, and sends this target position signal to the control function 282 and the determination function 283.

The control function 282 is a mode detection function 281.
The power assist controller 26 is energized and controlled in response to a target position signal sent from the power assist controller 26, a current position signal of the second film damper 20 output from a potentiometer 29 (described later), or a stop signal (described later). Second electric motor 1
6 is rotated forward, rotated backward, or stopped. The determination function 283 determines the stop position of the second film damper 20 from the current position signal of the second film damper 20 output from a potentiometer 29, which will be described later, and the target position signal sent from the mode detection function 281. Determine. This determination function 283 causes the control function 282 to stop the rotation of the second electric motor 16 when the second film damper 20 reaches the stop position, that is, when the target position and the current position match. send a signal.

The potentiometer 29 is mechanically linked to the second electric motor 16, and changes the rotation angle of the second electric motor 16 when the second electric motor 16 rotates. The resistance value of the potentiometer 29 changes accordingly, and the output voltage value of the potentiometer 29 changes accordingly. This voltage value is converted from analog to digital and this signal is sent to the microcomputer 28, which confirms the current position of the second film damper 20.

Here, using FIG. 7, potentiometer 2
A method of detecting the current position of the second film damper 20 according to the method of the present invention will be described. FIG. 7 is a potentiometer output diagram showing the output voltage value of the potentiometer 29, which changes according to the rotation of the second electric motor 16. Here, the differential 2 shown on the horizontal axis of FIG.
is the second electric motor 16 when the differential 2 mode is established.
(hereinafter, the differential 2 shown on the horizontal axis in FIG. 7 will be referred to as the rotation angle differential 2). Further, the vent shown on the horizontal axis in FIG. 7 represents the rotation angle of the second electric motor 16 when the vent mode is established (hereinafter, the vent shown on the horizontal axis in FIG. 7 will be referred to as a rotation angle vent). Similarly, bilevel, heat, heat differential, and differential 1 shown on the horizontal axis of FIG. 7 are bilevel mode, heat mode, heat differential mode, and differential 1, respectively.
It represents the rotation angle of the second electric motor 16 when the mode is established. Then, each rotation angle is calculated as rotation angle bilevel,
They are called rotation angle heat, rotation angle heat differential, and rotation angle differential 1.

Further, the differential 2 shown on the vertical axis in FIG.
9 (hereinafter, differential 2 shown on the vertical axis of FIG. 7)
is called voltage differential 2). Similarly, the vent, bilevel, heat, heat differential, and differential 1 shown on the vertical axis of FIG. It is called.

[0024] Also, voltage differential 2, voltage vent, voltage bilevel, voltage heat, voltage heat differential, and voltage differential 1
The value of the analog-to-digital converted signal is 1.
111, 1001, 0111, 0101, 0011, and 0001. In this way, by clarifying the relationship between the rotation angle of the second electric motor 16 and the output voltage value of the potentiometer 29, the output voltage value of the potentiometer 29 can be measured. By converting the signal from analog to digital and sending the converted signal to the microcomputer 28, the current position of the second film damper 20 can be confirmed.

For example, if the output voltage value of the potentiometer 29 is voltage differential 2, that is, the microcomputer
If the input signal 1111 is input to the controller 28, it means that the differential 2 mode is established at that time. Also,
If the output voltage value of the potentiometer 29 is voltage heat, that is, if the microcomputer 28 is inputting a signal of 0101, then the heat mode is established. .

Further, the rotation angle CENT in FIG. 7 is a rotation angle located exactly between the rotation angle differential 2 and the rotation angle differential 1, and between the rotation angle bi-level and the rotation angle heat. Further, the voltage CENT is equal to the rotation angle CEN of the second electric motor 16.
This is the output voltage value of the potentiometer 29 at the time of T, and is located exactly between voltage differential 2 and voltage differential 1. And the potentiometer 29 has an output voltage value of voltage CENT.
, the signal 0110 is sent to the microcomputer 28.
send to

By the way, the signals output by the potentiometer 29 in the differential 2 mode and the differential 1 mode are 1111 and 0001, respectively. Also, the blowout mode
The signal for commanding the differential gear setting unit 27 is 0000. Here, the signal 0000 that commands the differential is the differential 2
Signal 11 output by potentiometer 29 when in mode
11. The difference from the signal 0001 outputted by the potentiometer 29 in the differential 1 mode is that the blowout mode setting section 27 independently controls the differential 2 mode and the differential 1 mode. This is because they do not give orders.

Therefore, when instructing the differential, the blowout mode setting unit 27 first sends a signal of 0000 to the microcomputer 28, and the microcomputer 28 converts the signal 0000 to 1111 or 0001 depending on the situation. do. This is step 7 of the flowchart described later.
This corresponds to step 10. Next, the operation of the above configuration is shown in Figure 8.
The explanation will be based on. Here, FIG. 8 is a flow chart showing the operation of the microcomputer 28.

First, the potentiometer 29 converts the output voltage value of the potentiometer 29 from analog to digital, and then sends a signal to the microcomputer 28. Then, the microcomputer 28 converts the signal to NOW.
(current position) (step 1). When the blowout mode setting section 27 sends a blowout mode selection signal to the microcomputer 28, the microcomputer 28 reads the signal as OBJ (target position).
Step 2).

Next, the NOW input in step 1,
The OBJ input in step 2 is the same (OBJ=NO
W) is determined (step 3). When it is determined that OBJ=NOW (YES) in step 3,
The second electric motor 16 is left stopped (step 4), and the process returns to step 1. On the other hand, in step 3
When it is determined that BJ is not NOW (NO), first, it is determined whether the signal sent from the blowout mode setting section is a signal instructing a differential operation. That is, OBJ=000
It is determined whether it is 0 (step 5). First, a case will be described in which it is determined in step 5 that OBJ=0000 (YES).

[0031] In step 5, OBJ=0000 (
When it is determined (YES), it is determined whether the current rotation angle of the second electric motor 16 is closer to the rotation angle differential 2 than the rotation angle CENT. That is, it is determined whether NOW>0110 (step 6). When NOW > 0110 (YES), in order to establish the differential mode, the second
It is faster to drive the electric motor 16 toward the rotation angle differential 2 side. Therefore, the OB that was stored in the microcomputer 28
Convert J=0000 to OBJ=1111 (step 7).

[0032] Here, the currently established mode is Def2.
mode, that is, when the NOW stored in step 1 is NOW=1111, the second electric motor 1
There is no need to drive 6. Therefore, in step 8, NO
It is determined whether W=1111. NOW=111
If the answer is 1 (YES), the process proceeds to step 4, where the second electric motor 16 is kept stopped, and the process returns to step 1. On the other hand, when NOW=1111 (NO), the second electric motor 16 is rotated forward (step 9) and the control in step 8 is performed again. When NOW=1111 in step 8, the second electric motor Stop the motor (step 4) and return to step 1. Here, to rotate the second electric motor 16 in the normal direction means to drive the second electric motor 16 from the rotation angle CENT in the direction of the rotation angle differential 2.

On the other hand, in step 6, NOW>011
When it is determined that the rotation angle is not 0 (NO), it is faster to drive the second electric motor 16 toward the rotation angle differential 1 side in order to establish the differential mode. Therefore, the microcomputer 28
OBJ=0000 that was stored in OBJ=0001
(Step 10). Here, when the currently established mode is the differential 1 mode, that is, step 1
When the NOW stored in is NOW=0001, there is no need to drive the second electric motor 16. Therefore,
In step 11, it is determined whether NOW=0001.

When NOW=0001 (YES), the process proceeds to step 4, where the second electric motor 16 is kept stopped, and the process returns to step 1. On the other hand, NOW=0001
If not (NO), the second electric motor 16 is reversed (step 12) and the control of step 11 is performed again, and when NOW=0001 in step 11, the second electric motor is stopped. (Step 4), return to Step 1. Here, to reverse the second electric motor 16 means to drive the second electric motor 16 from the rotation angle CENT in the direction of the rotation angle differential 1.

The case where it is determined in step 5 that OBJ=0000 (YES) has been described above. Next, a case will be described in which it is determined in step 5 that OBJ is not 0000 (NO). OBJ in step 5
When it is determined that the value is not 0000 (NO), step 1
It is determined whether OBJ>NOW with respect to NOW stored in step 2 and OBJ read in step 2 (step 13).

When it is determined in step 13 that OBJ>NOW (YES), the second electric motor 16 is rotated forward (step 14), and OBJ>NOW is not satisfied (NO).
When it is determined, the second electric motor 16 is reversed (step 15). In step 14 or step 15, the second
After driving the electric motor 16, in step 16 the OBJ
=NOW. When it is determined that OBJ=NOW (YES), the second electric motor 16 is stopped in step 4, and the process returns to step 1. OBJ=NO
When it is determined that it is not W (NO), the control in step 13 is performed again, and when OBJ=NOW in step 16, the second electric motor 16 is stopped in step 4, and the process returns to step 1.

Next, specific signals will be input to NOW and OBJ for explanation. Here, in order to make the explanation described below easier to understand, Table 1 below is provided. Table 1 shows the signal (NOW) output by the potentiometer 29 when each mode is established, and the signal (NOW) output by the blowout mode setting section 27 when each mode is established. OBJ) is written.

[0038]

[Table 1]

As a first example, NOW=1111,
The case where OBJ=0000 will be explained. That is, when the differential 2 mode is currently established, the blowout mode setting section 27
A case will be explained in which a signal instructing the differential mode is sent from. In step 1, the microcomputer 28 stores the signal NOW=1111 sent from the potentiometer 29. And in step 2,
The microcomputer 28 reads the signal OBJ=0000 sent from the blowout mode setting section.

Then, the determination in step 3 is NO, and the process proceeds to step 5. Since OBJ=0000, it is determined YES in step 5 and the process proceeds to step 6. Next, NO
Since W=1111, YES is determined in step 6, and then OBJ=0000 is set to OBJ=1 in step 7.
Convert to 111. That is, the signal outputted by the blowout mode setting section 27 is the signal 0000 instructing the differential mode.
Therefore, the microcomputer 28 determines that driving the second electric motor 16 toward the differential 2 mode will establish the differential mode faster, and converts it to OBJ=1111. It is.

However, since NOW=1111, it is determined YES in step 8, and the process proceeds to step 4, where the second
The electric motor 16 is kept stopped. That is, the second electric motor 16 is not moving at all. Then, return to step 1 and store NOW=1111. As a second example, NOW=1001, OBJ=
The case of 0000 will be explained. That is, the current vent motor
A case will be described in which a signal instructing the differential mode is sent from the blowout mode setting section 27 when the mode is established.

When NOW=1001 is stored in step 1, OBJ=0000 is read in step 2. Then, in step 3, the determination is NO. OBJ=0
000, so it is determined YES in step 5, and N
Since OW=1001, the determination in step 6 is YES, and in step 7, conversion is made to OBJ=1111.

[0043] Since NOW=1001, step 8
The determination is NO in step 9, and the second electric motor 16 is activated in step 9.
Rotate forward. When the differential 2 mode is established, that is, when NOW=1111, the process proceeds to step 4 to stop the second electric motor 16, and in step 1, the NOW
=1111 is stored. As a third example, NOW=
0001, OBJ=0000 will be explained. That is, a case will be described in which a signal instructing the differential mode is sent from the blowout mode setting section 27 when the differential mode 1 is currently established.

When NOW=0001 is stored in step 1, OBJ=0000 is read in step 2. Then, in step 3, the determination is NO. OBJ=0
000, so it is determined YES in step 5, and N
Since OW=0001, the determination in step 6 is NO, and in step 10, it is converted to OBJ=0001.

However, since NOW=0001, that is, the differential 1 mode is currently established, there is no need to move the second electric motor 16. Therefore, the determination in step 11 is YES, and the process proceeds to step 4, where the second electric motor 16 is kept stopped. In other words, the second electric motor
This means that Ta 16 is not moving at all. Then, in step 1, NOW=0001 is stored.

As a fourth example, NOW=0011,
The case where OBJ=0000 will be explained. That is, a case will be described in which a signal instructing the differential mode is sent from the blowout mode setting section 27 when the heat differential mode is currently established. When NOW=0011 is stored in step 1, OBJ=0000 is read in step 2. Then, in step 3, the determination is NO.

Since OBJ=0000, step 5
Since it is determined as YES and NOW=0011, it is determined as NO in step 6 and OBJ= in step 10.
Convert to 0001. Since NOW=0011, the determination in step 11 is NO, and the second electric motor 16 is reversed in step 12. Then, when NOW=0001, it is determined as YES in step 11, and step 4
Proceed to stop the second electric motor 16 and set NOW=00.
01 is stored.

As a fifth example, NOW=0011,
The case where OBJ=0111 will be explained. That is, a case will be described in which a signal instructing the bi-level mode is sent from the blowout mode setting section 27 when the heat differential mode is currently established. When NOW=0011 is stored in step 1, OBJ=0111 is read in step 2. Then, in step 3, the determination is NO.

Since OBJ=0111, step 5
The determination is NO in step 13, and the process proceeds to step 13. OBJ=
0111, NOW=0011, so step 13
YES is determined, and the second electric motor 16 is rotated in the forward direction. And when OBJ=NOW, that is, OBJ=
If NOW=0111, select YES in step 16.
It is determined that the second electric motor 16 is stopped in step 4. Then, NOW=0111 is stored.

As a sixth example, NOW=0101,
The case where OBJ=0101 will be explained. That is, when the heat mode is currently established, the blowout mode setting section 27
A case will be explained in which a signal instructing heat mode is sent from. When NOW=0101 is stored in step 1, OBJ=0101 is read in step 2. In this case, since OBJ and NOW are equal, there is no need to move the second electric motor 16. Therefore, YES in step 3
If so, the process proceeds to step 4, where the second electric motor 16 is kept stopped. And in step 1 NOW=
0101 is stored.

Although the first embodiment has been described in detail above, the present invention is not limited to the first embodiment. Next, another embodiment will be described based on FIGS. 9, 10, and 11. FIGS. 9, 10, and 11 are explanatory diagrams showing the relationship between the opening of the film damper and the air outlet in each air blowing mode. Here, the opening of the film damper,
The shape of the air outlet and the arrangement of the air outlet are different for each figure. The blowout modes are arranged in the order of differential 2, vent, bilevel, heat, heat differential, and differential 1 in each figure, as in FIG. 2.

First, as a second embodiment, as shown in FIG. 9, an air conditioner unit is used in which the air outlets are arranged in order from the left side of the figure: a heat outlet 31, a differential outlet 32, and a vent outlet 33. It's okay. Each air outlet section in this air conditioner unit is provided with a grid (not shown) and a stepped section (not shown) as in the first embodiment. Also,
In this air conditioner unit, a film damper 36 having a first opening 34 and a second opening 35 is used. Further, the operating method of the second embodiment is exactly the same as that of the first embodiment.

Next, as a third embodiment, as shown in FIG. 10, an air conditioner unit is used in which the air outlets are arranged in order from the left side of the figure as a differential air outlet 41, a heat air outlet 42, and a vent air outlet 43. You may do so. Each air outlet section in this air conditioner unit is provided with a grid (not shown) and a stepped section (not shown) as in the first embodiment. Further, in this air conditioner unit, the first opening 44,
A film damper 46 having a second opening 45 is used. Further, the operating method of the third embodiment is exactly the same as that of the first embodiment.

Next, as a fourth embodiment, as shown in FIG. 11, an air conditioner unit is used in which the air outlets are arranged in this order from the left side of the figure: a differential air outlet 51, a vent air outlet 52, and a heat air outlet 53. You may do so. In this case, the differential air outlet 5
The interval between the vent outlet 52 and the heat outlet 53 is longer than the interval between the vent outlet 52 and the vent outlet 52. Such air conditioner units are widely used mainly as horizontal units. In this air conditioner unit as well, each outlet has a grid (not shown) and a step (not shown) as in the first embodiment.
(not shown) is provided.

[0055] Furthermore, in this air conditioner unit,
The first opening 54, the second opening 55, and the third opening 56
A film damper 57 is used. Further, the operating method of the fourth embodiment is exactly the same as that of the first embodiment. In addition, the differential mode is not limited to the end position, but may be located at another position. Further, there may be three or more differential modes. The signal output by the potentiometer 29 and the signal output by the blowout mode setting section are not limited to 4-bit signals, but may be other bit signals.

As detailed above, in the first to fourth embodiments of the present invention, the differential 2 mode is installed next to the vent mode.
By providing the mode, when changing from the vent mode and the bilevel mode to the differential mode, the differential mode can be established more quickly than with the conventional mode pattern. Furthermore, since the amount of drive of the electric motor is reduced, an electric motor with a low rotational speed can be used. In other words, it is possible to make the electric motor smaller, lighter, and lower in cost.

[0057] Furthermore, in the past, there was no step at each outlet, and when the film damper moved back and forth along each outlet, the frictional resistance against the inner surface of the duct was large. However, as in the first to fourth embodiments of the present invention, by providing a stepped portion at each outlet, when the film damper moves back and forth along each outlet, it contacts only the stepped portion and reciprocates. Because it moves, the frictional resistance is smaller than before. This eliminates the need for extra power consumption when driving the electric motor.

Furthermore, if no grid is provided at the outlet, the film damper will be deflected by wind pressure when the conditioned air is blown out from the outlet. If the film damper is bent, wrinkles will appear around the film damper's air outlet.
Conditioned air leaks from these wrinkles. However, as in the first to fourth embodiments of the present invention, by providing a grid at each outlet, the above-mentioned deflection, wrinkles,
and can prevent wind leakage.

In the first embodiment described above, the duct 2 is the case of the present invention, the second film damper 20 is the membrane member of the present invention, and the potentiometer 29 is the position confirmation means of the present invention. The second electric motor 16 corresponds to the moving means of the present invention, and the power assist controller 26 and the microcomputer 28 correspond to the control means of the present invention.

In the second embodiment, the film damper 36
corresponds to the membrane member of the present invention. In the third embodiment, the film damper 46 corresponds to the membrane member of the present invention. In the fourth embodiment, the film damper 57 corresponds to the membrane member of the present invention.

[0061]

[Effects of the Invention] As detailed above, according to the present invention,
The time required to establish the differential mode can be shortened. Furthermore, since the amount of movement of the membrane member is reduced, power consumption can also be reduced.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a cross section of a vehicle air conditioner according to a first embodiment.

FIG. 2 is an explanatory diagram showing the relationship between the opening of the film damper and the blowout port in each blowout mode.

3 is a partial top view of the differential air outlet when viewed from the direction of arrow III in FIG. 1. FIG.

FIG. 4 is a cross-sectional view taken along line AA in FIG. 3;

5 is a sectional view taken along line BB in FIG. 3;

FIG. 6 is a block diagram schematically showing the configuration of the first embodiment.

FIG. 7 is a potentiometer output diagram showing the value of the voltage output by the potentiometer, which changes according to the rotation of the electric motor.

[Figure 8] Flowchart showing the operation of the microcomputer
It is a chart.

FIG. 9 is an explanatory diagram showing the relationship between the opening of the film damper and the blowout port in each blowout mode.

FIG. 10 is an explanatory diagram showing the relationship between the opening of the film damper and the air outlet in each air blowing mode.

FIG. 11 is an explanatory diagram showing the relationship between the opening of the film damper and the air outlet in each air blowing mode.

[Explanation of symbols]

1 Vehicle air conditioning system 2 Duct 12 Vent outlet 13. Differential air outlet 14 Heat outlet 16 Second electric motor 20 Second film damper 26 Power assist controller 27 Blowout mode setting section 28 Microcomputer 29 Potentiometer 31 Heat outlet 32 Differential air outlet 33 Vent outlet 36 Film damper 41 Differential air outlet 42 Heat outlet 43 Vent outlet 46 Film damper 51 Differential air outlet 52 Vent outlet 53 Heat outlet 57 Film damper

Claims (1)

[Claims] [Claim 1] A vent outlet provided to blow air toward the upper body of the occupant, a differential outlet provided to blow air toward the window glass of the vehicle, and a vent outlet provided to blow air toward the occupant's feet. A case that is provided with three or more air outlets, including a heat outlet that is provided for blowing out heat, and that houses a vehicle air conditioner, and that moves along the opening surface of the three or more air outlets. The opening of each air outlet,
A membrane member for switching the cutoff, a position confirmation means for confirming the current position of the membrane member, a moving means for moving the membrane member, and an opening of the membrane member facing the vent outlet. a vent mode in which the opening of the membrane member faces the differential air outlet, and a heat mode in which the opening of the membrane member faces the heat outlet. and when selecting the differential mode, select the opening closest to the differential air outlet among the openings for obtaining the differential mode based on the current position signal from the position confirmation means; A vehicle air conditioner comprising: a control means for outputting a signal to the moving means to move the membrane member so that the opening thereof faces the differential air outlet.