JPH07205641A - Air conditioner for vehicle - Google Patents

Abstract

PURPOSE:To provide the precise transfer control of a film member and prevent such a situation in advance that noise following initialization operation exerts an evil influence upon a vehicle driver by increasing the times of the initialization operation which transfers the film member to its initial position. CONSTITUTION:The transfer control of step motors 18, 22 for transferring two film dampers is performed by a CPU 24 in an ECU 23 for air conditioning operation control. An alighting detection means 34 consists of a signal generating circuit 35 to generate an IG off signal SOFF in the switching off state of an ignition switch and a door lock detection circuit 36 to generate a door lock signal SLOCK in the locking state of a door lock mechanism for a driver's seat. The CPU 24 recognizes the vehicle driver's alighting state when both IG off signal SOFF and the door lock signal SLOCK are inputted, and thereafter, it performs an initialization operation to transfer the film dampers in the initial position when a predetermined period is passed.

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 in which the opening degree of an air passage portion through which conditioned air flows is adjusted according to the movement of a film member.

[0002]

2. Description of the Related Art In recent vehicle air conditioners, a blower mode switching damper, an air mix damper, and the like provided in a duct case are configured as film dampers made of a film material made of a flexible material such as a plastic film. Has made it possible to simplify the structure and reduce the overall weight and size.

In this case, the film damper is provided between a pair of winding shafts so as to be reciprocally movable. Further, as a drive source for the movement, it is general to use a step motor whose rotation amount is easily controlled. As a result of counting the number of signal pulses given to the step motor, that is, the step motor The moving position of the film damper is feedforward-controlled based on the data indicating the amount of rotation. However, in order to always perform such control accurately, it is necessary to move the film damper to a predetermined initial position. Therefore, the position where the film damper is moved in the predetermined direction by the maximum amount (the position where the film damper is wound by the maximum amount on one winding shaft) is set as the initial position, and the film damper is moved to the initial position at a predetermined timing. The initialization operation of moving to is executed.

Basically, the above initialization operation is performed at the time when the power supply for the control system such as the step motor is turned on (in the case of a vehicle, when the on-vehicle battery is mounted and the power supply to the control system is started). You only have to do it once. However, in reality, the number of signal pulses given to the step motor and the rotation amount of the step motor often do not match, such as when the step motor goes out of step due to an abnormal increase in load torque. There is. Therefore, conventionally, it has been considered to increase the number of times of the initialization operation, for example, to perform the initialization operation at each timing when the ignition switch is turned off.

[0005]

By the way, in order to surely move the film damper to the initial position during the initializing operation, it is necessary to move the film damper to the initial position at that time with respect to the step motor. It is practiced to give a signal pulse that is larger than the number of signal pulses by a predetermined number. Therefore, during the initializing operation, the step motor is further driven from the state where the film damper has been moved to the initial position, and a situation where the film motor idles constantly occurs. When the step motor spins idle in this way, its vibration may increase and a loud noise may be generated. In addition, a large vibration noise is also generated from the film damper in response thereto, resulting in a large noise. There is a situation.

However, in the case where the conventional configuration is such that the initialization operation is performed at each timing when the ignition switch is turned off, the noise as described above is offensive to the vehicle driver and may cause discomfort. Or, it may be mistaken for a failure, which is an unsolved problem.

The present invention has been made in view of the above circumstances, and an object thereof is to control the movement of a film-like member by increasing the number of initialization operations for moving the film-like member by a maximum amount in a predetermined direction. It is an object of the present invention to provide an air conditioner for a vehicle, which has an effect of preventing the noise caused by the initialization operation from being harmful to the driver of the vehicle even when the above-mentioned accuracy is aimed at.

[0008]

In order to achieve the above-mentioned object, the present invention is provided so as to be capable of reciprocating in a state of facing an air passage portion through which conditioned air flows, and opening the air passage portion according to the movement position. A flexible film-like member for adjusting the degree, a drive means for moving the film-like member, a drive signal to the drive means to move the film-like member, and an output state of the drive signal A moving position control means for controlling the moving position of the film-shaped member based on the above, at least alighting detection means for detecting alighting of the vehicle driver, and a predetermined time after the alighting detection means is in a detection state. And a timer means for outputting an initialization signal when the timer moves, and the moving position control means controls the movement of the film-shaped member by a maximum amount in a predetermined direction when the initialization signal is output from the timer means. It is obtained by a structure for performing an initialization operation for moving (claim 1).

In this case, after the driving means is constituted by a step motor, the movement position control means controls the movement position of the film-shaped member based on the result of counting the number of signal pulses given to the step motor. It can also be set (Claim 2).

Further, the moving position control means and the timer means may be constituted by an arithmetic control circuit included in the air conditioning operation control means (claim 3).

[0011]

In the vehicle air conditioner according to the present invention, the moving position control means moves the film-shaped member by giving a driving signal to the driving means, and the film-shaped member is moved based on the output state of the driving signal. The movement position of the member is controlled, and the opening degree of the air passage portion is adjusted according to such movement. On the other hand, when the driver of the vehicle gets off the vehicle, the getting-off detection means comes to be in a detection state, and when a predetermined time elapses thereafter, the timer means outputs an initialization signal. When the initialization signal is output in this way, the movement position control means performs the initialization operation of moving the film-shaped member by the maximum amount in the predetermined direction.

That is, the initialization operation of the film-shaped member is performed every time the vehicle driver gets off the vehicle,
Since the number of times of execution is relatively large, the movement control of the film member can be made accurate. Moreover, since the initializing operation is performed when a predetermined time has elapsed after the vehicle driver gets off the vehicle, the noise associated with the initializing operation is less likely to be recognized by the vehicle driver, and the noise is reduced. There is no risk of causing a driver annoyance or mistaking it for a failure.

In the vehicle air conditioner according to the second aspect of the present invention, since the drive means is constituted by the step motor, the control of the rotation amount thereof, and thus the movement position of the film-shaped member, is controlled by the number of signal pulses given to the step motor. It will be easy to do based on.

In the vehicle air conditioner according to the third aspect of the invention, the moving position control means and the timer means are constituted by utilizing the arithmetic control circuit included in the air conditioning operation control means.
The hardware configuration for the moving position control means and the timer means is unnecessary, and the overall configuration can be simplified.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment in which the present invention is applied to an automobile air conditioner will be described below with reference to FIGS. In FIG. 4, the air duct 2 of the automobile air conditioner 1
Has an outside air inlet and an inside air inlet not shown on the most upstream side, and has a defroster outlet 3, a face outlet 4, and a foot outlet 5 vertically on the most downstream side. Each of the outlets 3 to 5 corresponds to the air passage portion of the present invention, the defroster outlet 3 is provided to blow out air toward the inside of the windshield, and the face outlet 4 is provided on the upper body of the occupant. The foot outlet 5 is provided to blow air toward the passenger's feet.

Inside the air duct 2, from the upstream side to the downstream side, there are provided an inside / outside air switching damper (not shown) as an introduced air switching means for selecting the inside air intake mode or the outside air intake mode, the outside air introduction port or the inside air introduction port. A blower (or a fan) (not shown) as an air blower for blowing the air sucked in through the downstream side, an evaporator 6 as a cooling means, and a heater core 7 as a heating means through which engine cooling water flows, for example. There is. A sleeve wall portion 8 formed integrally with the air duct 2 is provided above the heater core 7 in the air duct 2, and the sleeve wall portion 8 is provided with cold air that has exchanged heat with the evaporator 6 in the heater core 7. Means for forming an air passage for bypassing and directing the air directly to the face air outlet 4 direction, specifically, a cold air bypass opening 9 is formed. Further, the cold air bypass port 9 is provided with a passage opening / closing means, specifically a plate damper 10, for selectively enabling the cold air bypass function.

The heater core 7 is arranged so that there is a predetermined gap between the lower end of the sleeve wall portion 8 and the lower surface of the air duct 2, whereby the upper and lower portions of the heater core 7 are arranged. The first cold air passage 11 and the second cold air passage 12 that form the air passage portion in the present invention are formed together with the ventilation passage that flows through the heater core 7. Also,
On the downstream side of the heater core 7 in the air duct 2, the downstream side is partitioned into two space portions communicating with the cold air passages 11 and 12, and a guide 13 integrated with the air duct 2 is provided in a different passage. It is formed as a means for smoothing the flow of air. This guide 13
Has a shape extending from the downstream side surface of the heater core 7 to a position corresponding to the central portion of the face outlet 4,
A plurality of notch portions (not shown) are formed so as to extend in the longitudinal direction thereof for the purpose of mixing the air in the first cool air passage 11 and the air in the second cool air passage 12, for example.

At the position adjacent to the edge of the defroster outlet 3 near the sleeve wall 8 in the air duct 2 and the position adjacent to the lower edge of the foot outlet 5, the winding shaft 1 is provided.
4 and 15 are rotatably supported with a predetermined gap between them and the air duct 2. Further, a blower outlet switching film damper 17 described later is provided at an intermediate position between the defroster blower outlet 3 and the face blower outlet 4 in the air duct 2.
Means for arranging the air outlets 3 to 5, specifically, a guide member 16 configured in a shaft shape having a circular cross section is rotatably supported with a predetermined gap between the guide member 16 and the air duct 2. ing. Although the guide member 16 is rotatable in this embodiment, it may be provided in a fixed state. When the guide member 16 is provided in such a fixed state,
It is sufficient that at least the cross-sectional shape of the surface in contact with the film damper 17 has a shape that does not hinder the movement of the film damper 17, for example, a curved shape.

The blower outlet switching film damper 17 corresponding to the film-shaped member in the present invention is stretched between the winding shafts 14 and 15 while passing through the space between the guide member 16 and the air duct 2. As a result, the defroster outlet 3, the face outlet 4, and the foot outlet 5 are provided so as to be movable while facing from the upstream side. Both ends of the film damper 17 are connected to the winding shafts 14 and 15, respectively, and the film damper 17 is configured to reciprocate in accordance with forward and reverse rotations of the winding shafts 14 and 15.

In this case, for example, one winding shaft 14 has a step motor 18 attached to the outside of the air duct 2.
It is directly rotated by (corresponding to the driving means in the present invention), and the other winding shaft 15 has the rotational force of the winding shaft 14 transmitted through a pulley and a wire or a belt (not shown). It is configured to be rotated. The step motor 18 may be installed inside the air duct 2 or may be arranged inside the winding shaft 14.

Although not shown, the film damper 17
Is provided with, for example, two sets of ventilation openings at predetermined positions, and the relative positions between the defroster outlet 3, face outlet 4, foot outlet 5 and the ventilation opening group according to the movement thereof. Is changed to adjust the opening degree of each of the outlets 3 to 5, that is, the outlet mode. Specifically, depending on the moving position of the film damper 17, a differential mode in which only the defroster outlet 3 is opened, a face / def mode in which the defroster outlet 3 and the face outlet 4 are opened, and only the face outlet 4 is opened. The face mode is changed to the bi-level mode in which the face air outlet 4 and the foot air outlet 5 are opened, and the foot mode in which only the foot air outlet 5 is opened.

Winding shafts 19 and 20 are rotatably supported at a position facing the lower end of the sleeve wall 8 in the air duct 2 and a position facing the lower edge of the foot outlet 5 from below. ing. The air-mix film damper 21 corresponding to the film-shaped member according to the present invention includes the winding shaft 19,
It is provided so as to be movable between positions where both the first cold air passage 11 and the second cold air passage 12 are crossed by being bridged between the two while passing through the upstream side of the heater core 7. Both ends of the film damper 21 are connected to the winding shafts 19 and 20, respectively.
It is configured to reciprocate according to the rotation of.

In this case, for example, one winding shaft 19 has a step motor 22 attached to the outside of the air duct 2.
It is directly rotated by (corresponding to the driving means in the present invention), and the rotational force of the winding shaft 19 is transmitted to the other winding shaft 20 via a pulley and a wire or bell not shown. It is configured to be rotated. The step motor 22 may be attached inside the air duct 2 or may be arranged in the winding shaft 19.

Although not shown, for example, two sets of ventilation opening groups are formed at predetermined positions of the film damper 21, and these ventilation opening groups are formed on the heater core 7 according to the movement of the film damper 21. Front part, each cold air passage 1
By selectively corresponding to any one or more of 1 and 12, the ratio of the amount of air blown through the heater core 7 and the amount of air blown through the first and second cool air passages 11 and 12 can be arbitrarily adjusted. It is configured.

FIG. 1 shows an outline of an electric configuration of an automobile air conditioner according to this embodiment by combining functional blocks, which will be described below. The ECU 23 corresponding to the air conditioning operation control means in the present invention is a CPU
24 (corresponding to the arithmetic control circuit in the present invention), ROM 25
And the RAM 26 and the like, and based on signals from respective operating condition elements such as a mode switch 27, an inside air temperature sensor 28, an outside air temperature sensor 29, and a water temperature sensor 30 which are well known in an air conditioner for automobiles, the evaporator 6 is controlled. Electromagnetic clutch for compressor 3 for refrigeration cycle including
1, the water valve 32 for the heater core 7, the blower motor 33, the other load for air conditioning operation, and the drive control of the step motors 18, 22 are performed.

The ECU 23 uses a terminal + B connected to an output terminal of an on-vehicle battery (not shown) as a power source, and receives a signal from the alighting detection means 34 in addition to the above-mentioned signal. . This getting-off detection means 3
4 is a signal generation circuit 35 that generates an IG off signal SOFF when the ignition switch of the automobile is turned off.
And a door lock detection circuit 36 that generates a door lock signal SLOCK when the door lock mechanism for the driver's seat of the automobile is locked.

The CPU 24 forming the core of the ECU 23
Has the functions of the moving position control means and the timer means in the present invention, and particularly when the drive control of the step motors 18 and 22 is performed, each step motor 1
8 and 22 are given the required number of signal pulses to move the blower outlet switching film damper 17 and the air mix film damper 21, and the number of output of each signal pulse given above is counted respectively. The feed positions of the moving positions of the film dampers 17 and 21 are controlled on the basis of the counting result (that is, the data indicating the rotation amounts of the step motors 18 and 22).

2 and 3 show a routine of a portion of the control program by the CPU 24, which is relevant to the gist of the present invention, and will be described below. That is, in FIG. 2, when the power of the ECU 23 is turned on (when the output terminal of the vehicle-mounted battery is connected to the terminal + B), that is, CP
The content of the routine performed at the beginning of the operation of U24 is shown. In this routine, after the initialization step 101 such as clearing the contents stored in the RAM 26 is executed, the initialization operation of the step motors 18 and 22 is executed (step 102).

This initializing operation is performed by moving the film dampers 17 and 21 in the predetermined direction by the maximum amount (for example, the film damper 1 is attached to one winding shaft 14 or 19).
7 and 21 are moved to the maximum winding position) and the moving position is set as the initial position. Therefore, in step 102, for each of the step motors 18 and 22, the number of signal pulses required to move the film dampers 17 and 21 corresponding to the step motors 18 and 22 to the initial position at that time. This gives a larger number of signal pulses by a predetermined number, which ensures that the film dampers 17 and 21 are moved to their initial positions. After such an initialization operation is performed, the number of times the signal pulse is output counted during the initialization operation is reset (step 103), and then the process proceeds to the main routine.

FIG. 3 shows the contents of a routine that is executed every time the vehicle driver gets off the vehicle. This routine is incorporated in the main routine subsequent to the routine shown in FIG. 2 and sequentially determines whether or not the IG off signal SOFF and the door lock signal SLOCK are input from the getting-off detection means 34 (steps 201 and 202). ), And when either one is not input, the process returns to the main routine.

IG off signal SOFF and door lock signal S
If both LOCKs are input, the system waits for a predetermined time ΔT (for example, an appropriate time within the range of 0 seconds <ΔT ≦ 30 seconds, but needless to say, may be longer) ( Step 203). Note that this step 203
Together with the steps 201 and 202, the function of the timer means in the present invention is realized.

When the time .DELTA.T has elapsed, the same initialization operation and count result reset operation as those in steps 102 and 103 shown in FIG. 2 are sequentially executed (steps 204 and 205), after which the process returns to the main routine.

In summary, according to the configuration of this embodiment described above, the initialization operation of moving the film dampers 17 and 21 to the predetermined initial position is
The process is performed when the power is first turned on to the CU 23, and is also performed every time a predetermined time ΔT has elapsed after the driver of the automobile has exited. Therefore, the number of times the initialization operation is performed is relatively large, and the movement control of the film dampers 17 and 21 can be accurately performed at all times. Further, there is a situation in which noise accompanying the initialization operation becomes large, but the initialization operation is performed for a predetermined time ΔT after the vehicle driver gets off the vehicle.
The noise is less likely to be recognized by the vehicle driver, and the noise may be offensive to the vehicle driver or may be mistaken for a failure. Is something that disappears.

Further, in the above embodiment, the film damper 1
Step motors 18 and 2 as respective drive sources of 7 and 21
Since it is configured to use 2, the film damper 1
There is an advantage that the movement positions of 7 and 21 can be easily controlled based on the number of signal pulses given to the step motors 18 and 22. Moreover, in the above embodiment, the CP in the ECU 23 originally provided for the air conditioning operation control
Since the U24 is used to obtain the functions of the moving position control means and the timer means, the hardware structure for the moving position control means and the timer means becomes unnecessary,
There is also an advantage that the entire configuration can be simplified.

In the above embodiment, the step motors 18 and 22 are used as the driving means, but other driving means such as a DC servo motor combined with a speed reducing mechanism or an ultrasonic motor may be used. Of course. Further, in the above embodiment, the dismounting detection means 34 for detecting only the dismounting state of the vehicle driver is provided.
It is also possible to provide a dismounting detection means for detecting that all the passengers of the vehicle have dismounted, and the point is that at least dismount detection means for detecting the dismounting state of the vehicle driver may be provided.

In addition, in the above embodiment, the functions of the moving position control means and the timer means are controlled by the CPU 24 in the ECU 23.
It is configured to obtain by using, but each function as described above,
It is also possible to adopt a configuration in which it is obtained by a CPU or a discrete circuit provided separately. That is, for example, regarding the timer means, when both the IG off signal SOFF and the door lock signal SLOCK are output from the getting-off detection means 34,
Dismounting determination means (step 201 in FIG. 3) that determines this as the driver's dismounting state and generates a timer start signal.
(Corresponding to the functions 202 and 202) and when the timer start signal is output from the getting-off determination means, a timer operation for a predetermined time is started, and at the end of the timer operation, an initialization operation of the step motors 18, 22 is commanded. A timer that generates a command signal (step 2 in FIG. 3)
Although it corresponds to the function of 03, the means for performing the timer operation and the means for outputting the command signal may be configured separately).

Further, instead of the dismounting detection means 34 in the above embodiment, dismounting detection means having the following configurations (1) to (5) can be provided. (1) Means for detecting the exit of the driver based on the fact that the door courtesy switch provided on the driver's door changes from the on state to the off state after the ignition switch turns off. When such a means is adopted, the ignition switch and the door courtesy switch that are always provided in the automobile can be used, so that it is possible to prevent the overall configuration from becoming complicated.

(2) Means for providing the seat cushion for the driver's seat with a so-called seat switch for detecting the seated state of the driver's seat, and detecting the dismounting of the driver based on the change in the operating state of the seat switch. When such a means is adopted, there is an advantage that it is possible to reliably detect the getting-off state of the vehicle driver.

(3) Means for installing a human sensor (infrared sensor, ultrasonic sensor, etc.) for detecting the presence / absence of an occupant in the passenger compartment, and detecting the presence / absence of an occupant in the vehicle based on a detection signal from the human sensor, When such a means is adopted, it becomes possible to surely determine whether or not all the passengers of the vehicle have exited, and the person sensor can be used for other functions (for example, the illegal entry of a third party into the vehicle interior. There is an advantage that can be used for the function to detect).

(4) In a known shift lock system, particularly in a vehicle equipped with a key interlock mechanism that allows the ignition key to be removed only when the shift lever is operated to the parking position, the shift lever is moved to the parking position. After the operation is detected,
When the door lock mechanism for the driver's seat is locked, or when the door courtesy switch of the driver's door changes from the once-on state to the off-state, a means for detecting this as the getting-off state of the driver. Even when such a means is adopted, the configuration of the shift lock system originally provided can be utilized, so that the overall configuration can be prevented from becoming complicated.

(5) A key switch for detecting whether or not the ignition key is inserted into the key hole for the engine starter is provided, and after the ignition switch is turned off, the key switch detects the removal of the ignition key, and then the driver's seat. When the door lock mechanism for the vehicle is locked or when the door courtesy switch of the driver's door changes from the on state to the off state, the means for detecting this as the exiting state of the driver. When such a means is adopted, since the element of the presence or absence of the ignition switch is added as a judgment element of the driver's dismounting state, the driver can detect the dismounting state more reliably, and There is an advantage that the key switch can be used for other functions (for example, a function of moving the steering wheel to a position that does not prevent the driver from getting in and out of the vehicle in accordance with the removal of the ignition key).

FIG. 5 shows a second embodiment of the present invention, and only the parts different from the first embodiment will be described below. This embodiment is characterized in that the control contents by the CPU 24 are changed, and the flow chart of FIG. 5 shows the control contents corresponding to FIG. 3 in the first embodiment. In FIG. 5, the IG off signal SOFF and the door lock signal SLO from the getting-off detection means 34 are shown.
When it is determined to be “YES” in steps 201 and 202 for determining whether or not CK is input, the count value N of getting-off times is incremented by “1” (step 202
a) After this, it is judged whether or not the count value N of getting-off times has reached a preset target value Nz (step 2).
02b).

When it is determined to be "NO" in step 202b, that is, the number of times the vehicle driver has got off the vehicle is the set target value N.
If z is not reached, the process returns to the main routine, but if “YES” is determined, a predetermined time ΔT
After sequentially executing step 203 corresponding to the timer means, step 204 for initializing operation, and step 205 for resetting count result, the exit count number N is reset to "0" (step 205a), After this, the process returns to the main routine.

Therefore, according to the second embodiment having such a configuration, the execution frequency of the initialization operation of the film dampers 17 and 21 can be arbitrarily set by setting the target value Nz to an appropriate value of "1" or more. Therefore, the initialization operation can be executed at the optimum timing according to the actual use situation, and it is possible to prevent the initialization operation from being performed unnecessarily. As a result, the number of times large stress is applied to the film dampers 17 and 21 is reduced, which can have a favorable effect on their life.

In the second embodiment, steps 201, 202, 202a, 202b and 203 realize the function of the timer means in the present invention, but the function of the timer means is independent. It can also be realized by a combination of means. That is, the getting-off detection means 3
When both the IG off signal SOFF and the door lock signal SLOCK are output from the vehicle No. 4, it is determined that the driver is in the getting-off state, and the counting-down signal signal is generated (FIG. 5).
Corresponding to the functions of steps 201 and 202 in
A counter (corresponding to the function of step 202a in FIG. 5) that counts the number of times the counting signal is output from the getting-off determination means, and means that generates a timer start signal when the count value of this counter reaches a target value ( 5 corresponds to the function of step 202b in FIG. 5, but this function may be realized by using the carry signal of the counter) and the timer operation for a predetermined time is started when the timer start signal is output. A timer that generates a signal for instructing the initialization operation of the step motors 18 and 22 at the end of the timer operation (corresponds to the function of step 203 in FIG. 5, but includes a means for performing a timer operation and a means for outputting a command signal). It is also possible to adopt a different configuration).

Further, the structure capable of adjusting the execution frequency of the initialization operation of the film dampers 17 and 21 is not limited to the initialization frequency adjusting means as described in the second embodiment, and the operation of the air conditioner for automobiles is not limited to this. Integrated time or similar data (eg blower motor 3
(3 total operating time, total operating time of the step motors 18 and 22) reaches the set value, the initialization frequency adjusting means for performing the initialization operation, or the number of times the automobile air conditioner has been operated or data similar thereto. It is also possible to provide an initialization frequency adjusting means for performing an initialization operation when (for example, the number of times the blower motor 33 is started, the number of times the stepper motors 18 and 22 are started, etc.) reaches a set value.

[0047]

As is apparent from the above description, according to the first aspect of the invention, the initializing operation of moving the film-shaped member in the predetermined direction by the maximum amount is performed at least after detecting the getting-off of the vehicle driver. Since the configuration is performed when the predetermined time has elapsed, the number of initialization operations can be increased and the movement control of the film-shaped member can be realized accurately, and the noise caused by the initialization operations causes the vehicle driver to This has a beneficial effect that it is possible to prevent a situation that is harmful to the user.

According to the second aspect of the invention, since the driving means for driving the film-shaped member is constituted by the step motor, the control of the moving position of the film-shaped member is controlled by the number of signal pulses given to the step motor. According to the invention of claim 3, the moving position control means and the timer means which are essential constituents for obtaining the effect of the invention of claim 1 are obtained. Is configured using the arithmetic control circuit included in the air conditioning operation control means, the hardware configuration for the moving position control means and the timer means is unnecessary, and the overall configuration can be simplified. .

[Brief description of drawings]

FIG. 1 is a functional block diagram schematically showing an electrical configuration of a first embodiment of the present invention.

FIG. 2 is a flowchart 1 showing the control contents.

FIG. 3 is a flowchart showing the control contents, part 2

FIG. 4 is a vertical cross-sectional view of a main part of an automobile air conditioner.

FIG. 5 is a flowchart showing the control contents of the second embodiment of the present invention.

[Explanation of symbols]

In the drawings, 1 is an air conditioner for an automobile, 3 is a defroster outlet (air passage portion), 4 is a face outlet (air passage portion),
5 is a foot outlet (air passage portion), 11 is a first air passage (air passage portion), 12 is a second air passage (air passage portion), 17 is an outlet switching damper (membrane member), 18 is a step motor (driving means), 21 is a film damper (film member) for air mix, 22 is a step motor (driving means), 23 is an ECU (air conditioning operation control means), 24 is a CPU (arithmetic control circuit), Reference numeral 34 is an exit detection means, 35 is a signal generation circuit, and 36 is a door lock detection circuit.

Claims (3)

[Claims] 1. A flexible film-shaped member which is provided so as to be capable of reciprocating in a state of facing an air passage portion through which conditioned air flows and which adjusts the opening degree of the air passage portion according to the movement position, and the film. Drive means for moving the film-shaped member, and a moving position for applying a drive signal to the drive means to move the film-shaped member and controlling the moving position of the film-shaped member based on the output state of the drive signal. A control means, at least an alighting detection means for detecting an alighting of a vehicle driver, and a timer means for outputting an initialization signal when a predetermined time has elapsed after the alighting detection means is in a detection state, The moving position control means is configured to execute an initializing operation of moving the film-shaped member by a maximum amount in a predetermined direction when the initialization signal is output from the timer means. Vehicle air conditioner according to claim. 2. The driving means is constituted by a step motor, and the movement position control means is constituted so as to control the movement position of the film-shaped member based on the result of counting the number of signal pulses given to the step motor. The vehicle air conditioner according to claim 1, wherein 3. The vehicle air conditioner according to claim 1, wherein the moving position control means and the timer means are constituted by an arithmetic control circuit included in the air conditioning operation control means.