KR102091479B1 - Controller of air conditioning system for automotive vehicles - Google Patents

Abstract

The present invention relates to a controller of a vehicle air conditioner, and it is possible to detect the rotational directions of a plurality of switch knobs even with a single optical sensor unit, thereby reducing the number of installations of the optical sensor unit to reduce manufacturing cost. It aims to do.
In order to achieve this object, the present invention, in the controller of the air conditioning apparatus for a vehicle having a plurality of switch knobs to input a specific control value while forward and backward movement according to the user's operation, forward and reverse movement of the plurality of switch knobs It includes a multi-sensing optical sensor unit capable of sensing both directions; The multi-sensing optical sensor unit includes a light emitting unit; First and second light receiving units installed at intervals so as to receive light from the light emitting unit; Corresponding to forward and reverse motion of each switch knob, forward and reverse motion between the light emitting part and the first and second light receiving parts, respectively, and blocking light from the light emitting part received by the first and second light receiving parts during forward and reverse motion. A plurality of index plates having an index tooth composed of at least one tooth segment; The index tooth of each index plate is composed of different number of tooth segments so that the number of blocking and the order of blocking of light emitted from the first and second light receiving units when moving in the forward and reverse directions can be differentiated for each direction of movement. As a result, it is possible to sense the direction of movement of each switch knob based on the differentiated number of light blocking times and the light blocking order.

Description

CONTROLLER OF AIR CONDITIONING SYSTEM FOR AUTOMOTIVE VEHICLES}

The present invention relates to a controller of a vehicle air conditioning apparatus, and more specifically, by configuring a single optical sensor unit to detect the rotational directions of a plurality of switch knobs, thereby reducing the number of installations of the optical sensor unit and through this , It relates to a controller of a vehicle air conditioning system that can reduce the manufacturing cost.

The vehicle is equipped with a controller for controlling the air conditioning system.

The controller is installed in a center facia panel in front of the driver's seat, and includes a housing 1 and a plurality of switch knobs 3 and 5 installed in the housing 1, as shown in FIG. 1. do.

The switch knobs 3 and 5 are of a rotary type and a button type.

As the rotary switch knob 3, there are "temperature control switch 3a" and "air flow control switch 3b", and these rotary switch knobs 3 are rotated in the forward or reverse direction to perform a specific "cooling," When the number of heating stages and the number of air volumes are selected, the "air discharge temperature" and "air discharge volume" in the vehicle cabin are adjusted according to the selected "cooling and heating stages" and "air volume stages".

These rotary switch knobs 3, as shown in Figure 1, may be installed to overlap each other in a double so as to have the same axis of rotation. The rotary switch knobs 3 thus installed are rotated around the same axis of rotation to input specific control values, respectively.

On the other hand, the controller of such an air conditioning device is provided with a rotation direction detection means for sensing the "rotation direction" of the rotary switch knob (3).

The direction of rotation detection means, as shown in FIG. 2, includes an optical sensor unit 10.

The optical sensor unit 10 includes a light emitting unit 12, first and second light receiving units 14 and 16 capable of receiving light from the light emitting unit 12, and light emitting units 12 and the first and second units 2, an index plate 18 disposed between the light receiving units 14 and 16 is provided.

The first and second light receiving units 14 and 16 are arranged at predetermined intervals, and are turned on or off according to whether light is received from the light emitting unit 12. Particularly, when light of the light emitting unit 12 is received, it is turned on, and when light of the light emitting unit 12 is blocked, it is turned off.

The index plate 18 is composed of a ring type, and is rotated integrally with the rotary switch knob 3, and a plurality of index teeth 18a formed at equal intervals along the circumferential direction ).

The index teeth 18 are sequentially rotated in the forward or reverse direction along with the rotary switch knob 3 to sequentially block light from the light emitting units 12 received by the first and second light receiving units 14 and 16.

Particularly, according to the forward or reverse rotation, the order of blocking the light received by the first and second light receiving units 14 and 16 is different from each other, and the first and second light receiving units 14 according to the differentiation of the “light blocking order” , 16) controls the order of ON and OFF.

Accordingly, the sequence of ON and OFF of the first and second light receiving units 14 and 16 is sensed, and the ON and OFF of the detected first and second light receiving units 14 and 16 ( OFF) to detect the direction of rotation of the rotary switch knob (3).

For example, when the first light receiving unit 14 is turned off, and the second light receiving unit 16 is turned off with a time difference, the rotary switch knob 3 is rotated in the forward direction (X). Detect. Then, after the second light-receiving unit 16 is turned off, and the first light-receiving unit 14 is turned off at a time difference, it is detected that the rotary switch knob 3 is rotated in the reverse direction (Y) ( For convenience of explanation, "forward (X)" will be referred to as "clockwise (X)" and "reverse (Y)" as "counterclockwise (Y)".

On the other hand, when the rotational direction of the rotary switch knob 3 is detected, it is possible to control the number of rotations of the rotary switch knob 3 based on the sensed rotational direction of the rotary switch knob 3.

By the way, the controller of such a conventional air conditioning apparatus is configured to sense the rotational direction of a single rotary switch knob 3 with one optical sensor unit 10, and thus a plurality of rotary switch knobs 3 In order to sense the rotational direction of the rotary switch knob 3, the optical sensor unit 10 must be installed individually.

In addition, there is a problem in that the number of parts is increased due to these drawbacks, and a drawback is pointed out that the assembly time of the parts is increased and the manufacturing cost is increased due to these problems.

The present invention has been devised to solve the conventional problems as described above, and its purpose is to provide a controller of a vehicle air conditioning apparatus that can efficiently detect the rotational directions of a plurality of rotary switch knobs even with one optical sensor unit. To provide.

Another object of the present invention is to provide a controller of a vehicle air conditioning apparatus that can reduce the number of installation of the optical sensor unit by configuring to efficiently detect the rotational directions of a plurality of rotary switch knobs even with one optical sensor unit. To have.

Another object of the present invention is to provide a controller for a vehicle air conditioner, which can reduce manufacturing cost by reducing the number of installations of the optical sensor unit, and improve productivity by reducing assembly time of parts. Having

In order to achieve this object, the controller of the vehicle air conditioning apparatus according to the present invention, in the controller of the vehicle air conditioning apparatus having a plurality of switch knobs to input a specific control value while forward and reverse motion according to the user's operation, A multi-sensing optical sensor unit capable of detecting both forward and reverse movement directions of a plurality of switch knobs; The multi-sensing optical sensor unit includes a light emitting unit; First and second light receiving units installed at intervals so as to receive light from the light emitting unit; The luminescence received by the first and second light-receiving units during forward and reverse movement, and forward and reverse motion between the light-emitting unit and the first and second light-receiving units, respectively, corresponding to the forward and reverse movements of each switch knob. And a plurality of index plates having an index tooth composed of at least one tooth segment capable of blocking negative light; The index teeth of each of the index plates have different numbers of teeth so that the number of times of blocking and the order of blocking of the light emitted from the first and second light receiving units can be differentiated for each direction of movement when moving in the forward and reverse directions. It is composed of segments, and it is characterized in that it is possible to sense the direction of movement of each of the switch knobs based on the number of light blocking times and the order of blocking light.

Preferably, the switch knobs are two rotary switch knobs that rotate forward and backward according to the user's operation, and the index plates are ring types that rotate integrally with the rotary switch knob. It is characterized in that the first and second index plate of.

And, the index tooth of the first index plate is composed of two tooth segments arranged at intervals, and the index tooth of the second index plate is composed of three tooth segments arranged at intervals. Is done.

According to the controller of the air conditioning apparatus for a vehicle according to the present invention, since a single optical sensor unit can detect the rotation directions of a plurality of switch knobs, there is an effect of reducing the number of installations of the optical sensor unit.

In addition, since the number of installations of the optical sensor unit is reduced, the manufacturing cost can be reduced, and the assembly time of the parts can be shortened to improve productivity.

1 is a view showing a controller of a conventional vehicle air conditioning system,
Figure 2 is a perspective view showing a light sensor unit for sensing the rotational direction of the rotary switch knob in the controller of a conventional vehicle air conditioning apparatus,
Figure 3 is a view showing the main features of the vehicle air conditioner controller according to the present invention, a perspective view showing the configuration of a multi-sensing optical sensor unit for sensing the rotational direction of a plurality of rotary switch knobs,
Figure 4 is a perspective view showing the combined state of Figure 3,
5 is an operation diagram showing an operation example of the multi-sensing optical sensor unit which is a feature of the present invention, and is a view showing a state in which all of the rotation directions are sensed when the plurality of rotary switch knobs are rotated.

Hereinafter, a preferred embodiment of the controller of the vehicle air conditioning apparatus according to the present invention will be described in detail with reference to the accompanying drawings (the same components as before will be described using the same reference numerals).

First, before looking at the features of the air conditioning apparatus controller according to the present invention, a brief description of the controller of the air conditioning apparatus with reference to FIG. 1.

The controller of the air conditioner includes a housing 1 and a plurality of rotary switch knobs 3 installed on the housing 1.

Rotary switch knob 3, there are "temperature control switch (3a)" and "air volume control switch (3b)", these rotary switch knobs (3a, 3b) by rotating the clockwise or counterclockwise operation When specific "cooling and heating stages" and "air volume stages" are selected, the discharge air temperature and discharge air volume in the vehicle cabin are adjusted according to the selected "cooling and heating stages" and "air volume stages".

These rotary switch knobs 3a and 3b are installed to overlap each other so as to have the same rotation axis, and the rotary switch knobs 3a and 3b installed as described above are rotated around the same rotation axis for specific control. Enter each value.

Next, the features of the controller for the air conditioning apparatus according to the present invention will be described in detail with reference to FIGS. 1 and 3 to 5 as follows.

First, referring to Figures 1 and 3 and 4, the controller of the present invention, the multi-sensing optical sensor unit 20 that can detect all of the "rotation direction" of the plurality of rotary switch knobs (3a, 3b) It includes.

The multi-sensing optical sensor unit 20 includes a light emitting unit 22, first and second light receiving units 24 and 26 capable of receiving light from the light emitting unit 22, and a light emitting unit 22 and a first And a plurality of index plates 30 and 40 disposed between the second light receiving units 24 and 26 and corresponding to the rotary switch knobs 3a and 3b (hereinafter referred to as "rotary switch knobs 3a, 3b) "is abbreviated as" switch knobs 3a and 3b, "and" plurality of index plates 30 and 40 "is referred to as" first and second index plates 30 and 40 "according to the arrangement order. do).

The first and second light receiving units 24 and 26 are arranged at predetermined intervals, and are turned on and off according to whether light is received from the light emitting unit 22. In particular, when light from the light emitting unit 22 is received, it is turned on, and when light from the light emitting unit 22 is blocked, it is turned off.

The first and second index plates 30 and 40 are composed of a ring type, and are rotated integrally with corresponding switch knobs 3a and 3b, and a plurality of index teeth formed at equal intervals along the circumferential direction ( 32, 42).

The index teeth 32, 42 are composed of at least one or more tooth segments 32a, 32b (42a, 42b, 42c), and the index teeth 32, 42 configured in this way include a switch knob 3a, When rotating 3b), the light emitting unit 22 is received by the first and second light receiving units 24 and 26 while rotating in the clockwise (X) or counterclockwise (Y) direction with the corresponding switch knobs 3a and 3b. To block the light. Therefore, the first and second light receiving units 24 and 26 are turned on or off.

On the other hand, the index tooth 32 of the first index plate 30 and the index tooth 42 of the second index plate 40 are different numbers of tooth segments 32a, 32b (42a, 42b, 42c). It is composed.

That is, for example, the index tooth 32 of the first index plate 30 is composed of two tooth segments 32a and 32b arranged at intervals (hereinafter, "first and second tooth segments"). (32a, 32b) ".

Then, the index tooth 42 of the second index plate 40 is composed of three tooth segments 42a, 42b, and 42c arranged at intervals (hereinafter, "first to third tooth segments 42a, 42b, 42c) ".

In this way, the index teeth 32, 42 of the first and second index plates 30, 40 made of different numbers of tooth segments 32a, 32b (42a, 42b, 42c) are clockwise (X) or In the process of being rotated in the counterclockwise direction (Y), the number of times of blocking the light and the order of blocking each of the light emitting units 22 received by the first and second light receiving units 24 and 26 are differentiated for each rotational direction.

For example, as shown in FIG. 5, when the index teeth 32 of the first index plate 30 are rotated clockwise (X) (for convenience, the first index plate 30 is linearly moved) The first tooth segment 32a sequentially blocks the "reception light" of the first light receiving unit 24 and the second light receiving unit 26, and then the second tooth segment 32b is removed. Since the "receiving light" of the first light receiving part 24 and the second light receiving part 26 is sequentially blocked, the "receiving light" of the first and second light receiving parts 24 and 26 is "first light receiving part 24" → 2 light-receiving section 26 → the first light-receiving section 24 → the second light-receiving section 26 in the order of "4 times" is blocked.

Conversely, when the index teeth 32 of the first index plate 30 are rotated counterclockwise (Y), the second tooth segment 32b includes the second light receiving portion 26 and the first light receiving portion 24. After sequentially blocking the “receiving light” of the first and second segments 32a, since the “receiving light” of the second light receiving part 26 and the first light receiving part 24 is sequentially blocked, the first and second light receiving parts The "receiving light" of (24, 26) blocks "4 times" in total in the order of "2nd light receiving section 26 → 1st light receiving section 24 → 2nd light receiving section 26 → 1st light receiving section 24" do.

In addition, when the index teeth 42 of the second index plate 40 are rotated in the clockwise direction (X), the first tooth segment 42a of the first light receiving unit 24 and the second light receiving unit 26 After sequentially blocking the "reception light", the second tooth segment 42b sequentially blocks the "reception light" of the first light receiving unit 24 and the second light receiving unit 26, and thereafter, the third tooth segment ( 42c) sequentially blocks the "receiving light" of the first light receiving part 24 and the second light receiving part 26, so that the "receiving light" of the first and second light receiving parts 24 and 26 is the "first light receiving part ( 24) → the second light-receiving section 26 → the first light-receiving section 24 → the second light-receiving section 26 → the first light-receiving section 24 → the second light-receiving section 26 in the order of “6 times” is blocked.

Conversely, when the index teeth 42 of the second index plate 40 are rotated in the counterclockwise direction (Y), the third tooth segment 42c includes the second light receiving portion 26 and the first light receiving portion 24. After sequentially blocking the “receiving light” of the second tooth segment 42b sequentially blocks the “receiving light” of the second light receiving part 26 and the first light receiving part 24, and thereafter, the first tooth segment Since "42a" sequentially blocks the "receiving light" of the second light receiving part 26 and the first light receiving part 24, the "receiving light" of the first and second light receiving parts 24 and 26 means "the second light receiving part". (26) → The first light-receiving unit 24 → the second light-receiving unit 26 → the first light-receiving unit 24 → the second light-receiving unit 26 → the first light-receiving unit 24 in order of "6 times" is blocked.

Consequently, the index teeth 32, 42 of the first and second index plates 30, 40 with different numbers of tooth segments 32a, 32b (42a, 42b, 42c) are clockwise or counterclockwise. In the process of rotating in each direction, the light received by the first and second light receiving units 24 and 26 is blocked, but the number of blocking and the order of blocking are differently differentiated for each rotation direction.

Therefore, the number of ON and OFF of the first and second light receiving units 24 and 26 and the ON and OFF times of each of the first and second index plates 30 and 40 are rotated. OFF) You can differentiate the order.

As a result, the switch knobs 3a are based on the on and off times and the on and off order of the first and second light receiving units 24 and 26 differentiated for each rotation direction of the first and second index plates 30 and 40. , It is possible to accurately detect the rotation direction of 3b).

For example, the first and second light receiving units 24 and 26 are totaled in the order of “first light receiving unit 24 → second light receiving unit 26 → first light receiving unit 24 → second light receiving unit 26”. When "4 times" is OFF (OFF), it is sensed that the first switch knob 3a is rotated clockwise (X).

In addition, the first and second light receiving units 24 and 26 are totaled four times in the order of "second light receiving unit 26 → first light receiving unit 24 → second light receiving unit 26 → first light receiving unit 24". When it is OFF, it senses that the first switch knob 3a is rotated counterclockwise (Y).

Then, the first and second light receiving units 24 and 26 are referred to as “the first light receiving unit 24 → the second light receiving unit 26 → the first light receiving unit 24 → the second light receiving unit 26 → the first light receiving unit 24 → When the total number of "6 times" is turned OFF in the order of the "second light receiving unit 26", it is sensed that the second switch knob 3b is rotated clockwise (X).

Then, the first and second light receiving units 24 and 26 are referred to as “the second light receiving unit 26 → the first light receiving unit 24 → the second light receiving unit 26 → the first light receiving unit 24 → the second light receiving unit 26 → When the total number of "6 times" is OFF in the order of "first light receiving unit 24", it is sensed that the second switch knob 3b is rotated counterclockwise (Y).

On the other hand, the index teeth (32, 42) of the first and second index plates (30, 40) is composed of at least one or more tooth segments (32a, 32b) (42a, 42b, 42c), the tooth segment ( 32a, 32b) (42a, 42b, 42c), it is preferable that the width is configured to be the same or different from each other. In particular, it is preferable that the widths of the tooth segments 32a, 32b (42a, 42b, 42c) with respect to the intervals L1 (L2) of the first and second light receiving units 24, 26 are the same or different from each other. Do.

More preferably, the widths of the tooth segments 32a, 32b (42a, 42b, 42c) with respect to the intervals L1 (L2) of the first and second light receiving units 24, 26 are configured to be different from each other. good.

For example, among the first and second tooth segments 32a and 32b constituting the index tooth 32 of the first index plate 30, the first tooth segment 32a includes the first and second light receiving units It has a width (L1) narrower than the interval (L1) between (24, 26), the second tooth segment (32b), the width wider than both spaces (L2) of the first and second light receiving unit (24, 26) ( ℓ2).

Accordingly, the first tooth segment 32a blocks the "reception light" of the first and second light receiving units 24 and 26 one by one, thereby turning off the first and second light receiving units 24 and 26 one by one, The second tooth segment 32b blocks all of the "reception light" of the first and second light receiving units 24 and 26 at a time to turn off the first and second light receiving units 24 and 26 all at once.

And, among the first to third tooth segments 42a, 42b, and 42c constituting the index tooth 42 of the second index plate 40, the first tooth segment 42a includes first and second light receiving units ( 24, 26 has a width (L3) wider than both the spaces (L2), the second and third tooth segments (42b, 42c), the first and second light receiving portion (24, 26) between the space (L1) It has a narrower width (ℓ4, ℓ5).

Accordingly, the first tooth segment 42a blocks all of the "reception light" of the first and second light receiving units 24 and 26 at a time, thereby turning off the first and second light receiving units 24 and 26 at once. And the second and third tooth segments 42b and 42c block the "reception light" of the first and second light receiving units 24 and 26 one by one to turn off the first and second light receiving units 24 and 26 one by one. (OFF).

The reason for this configuration is the number of ON and OFF of the first and second light receiving units 24 and 26, and the number of times ON and OFF for each rotation direction of the first and second index plates 30 and 40. In order to differentiate the OFF sequence in more detail, this increases the "rotational direction detection precision" of the first and second index plates 30 and 40, and as a result, the switch knobs 3a and 3b. This is to significantly increase the "rotational direction detection precision".

That is, for example, the index tooth 32 of the first index plate 30 has a width (in which the first tooth segment 32a turns off the first and second light receiving units 24 and 26 one by one ( ℓ1) and the second tooth segment 32b has a width ℓ2 that turns off the first and second light receiving units 24 and 26 all at once, so that when rotated clockwise (X) In the index tooth 32, the on and off order and the number of on and off of the first and second light receiving units 24 and 26 are controlled as shown in Table 1 below.

[Table 1]

Conversely, when rotated in the counterclockwise direction (Y), the index tooth 32 of the first index plate 30 determines the on and off order of the first and second light receiving units 24 and 26 and the number of on and off times. It is controlled as shown in Table 2 below.

[Table 2]

In addition, the index tooth 42 of the second index plate 40 has a width l3 in which the first tooth segment 42a turns off the first and second light receiving units 24 and 26 all at once. , Since the second and third tooth segments 42b and 42c have widths ℓ4 and ℓ5 that turn off the first and second light receiving units 24 and 26 one by one, rotate clockwise (X) When possible, the index tooth 42 controls the on and off order and the number of on and off of the first and second light receiving units 24 and 26 as shown in Table 3 below.

[Table 3]

Conversely, when rotated in the counterclockwise direction (Y), the index tooth 42 of the second index plate 40 determines the on and off order of the first and second light receiving units 24 and 26 and the number of on and off times. It is controlled as shown in Table 2 below.

[Table 4]

As described above, the widths of the respective tooth segments 32a, 32b (42a, 42b, 42c) constituting the index teeth 32, 42 of the first and second index plates 30, 40 are differentiated, Through this, the first and second index plates (30, 40) for each rotation direction of the first and second light receiving unit (24, 26) on, off the number of times, by turning the on and off order in more detail, the first And it is possible to significantly increase the "rotational direction detection precision" of the second index plate (30, 40), as a result, it is possible to significantly increase the "rotational direction detection precision" of the switch knobs (3a, 3b).

Referring back to FIGS. 3 to 5, the first and second light receiving units 24 and 26 have first and second index plates 30 and 40 operated by the user's switch knobs 3a and 3b. Except in the case of the rotational movement, it is necessary to always maintain the state of receiving light from the light emitting unit 22.

The reason for this configuration is to detect both the index teeth 32 and 42 of the two first and second index plates 30 and 40, and thereby detect both the rotational directions of the two index plates 30 and 40. This is because the first and second light receiving units 24 and 26 always receive light from the light emitting unit 22 and must always wait in the ON state.

On the other hand, in order for the first and second light receiving units 24 and 26 to be always on, the rotation of each switch knob 3a, 3b is controlled by controlling the rotation structure of each switch knob 3a, 3b. At the time of stopping, the index teeth (32, 42) of the index plate (30, 40), the light emitting unit 22 and the first and second light receiving units (24, 26) to move to a position that does not block the structure It should be equipped.

Accordingly, at the time when rotation of each of the switch knobs 3a, 3b is stopped, the open portion S between the index teeth 32, 42 of the corresponding index plates 30, 40 is the light emitting unit 22 and the first. And the second light receiving portions 24 and 26. Accordingly, in the state where each of the switch knobs 3a and 3b and the corresponding index plates 30 and 40 stops the rotational movement, the first and second light receiving units 24 and 26 are always able to maintain the ON state. .

Typically, the rotary switch knobs 3a, 3b are provided with a detent device (not shown) that controls the rotation angle constant, so if the position of the detent device is adjusted, each switch knob At the time when the rotation of (3a, 3b) stops, the index teeth (32, 42) of the corresponding index plate (30, 40) to a position that does not block the "reception light" of the first and second light receiving units (24, 26). You can make it move.

Particularly, at the point of rotation stop per click of each of the switch knobs 3a, 3b, the index teeth 32, 42 of the corresponding index plates 30, 40 of the first and second light receiving units 24, 26 "Received light" can be moved to a position that does not block. As a result, the first and second light receiving units 24 and 26 can always wait in the ON state.

The detent device of the rotary switch knobs 3a and 3b is already a known technique, so a detailed description thereof will be omitted.

According to the present invention having such a configuration, even with a single optical sensor unit 20, a structure capable of sensing the rotational directions of the plurality of switch knobs 3a, 3b, thereby reducing the number of installations of the optical sensor unit 20. You can.

In addition, since the number of installations of the optical sensor unit 20 can be reduced, it is possible to reduce manufacturing costs and to improve productivity by reducing assembly time of parts.

The preferred embodiments of the present invention have been exemplarily described above, but the scope of the present invention is not limited to such specific embodiments, and can be appropriately changed within the scope described in the claims.

1: Housing
3: Rotary Type Switch Knob
3a: Temperature control switch (Switch) 3b: Air volume control switch
20: multi-sensing optical sensor unit (Unit) 22: light emitting unit
24: first light receiving unit 26: second light receiving unit
30: 1st Index Plate (Index Plate) 32: Index Tooth (Index Tooth)
32a, 32b: Tooth Segment 40: Second index plate
42: index tooth 42a, 42b, 42c: tooth segment

Claims (8)

In the controller of the air conditioning apparatus for a vehicle having a plurality of switch knobs (3) for inputting a specific control value while forward and reverse movement according to the user's operation,
A multi-sensing optical sensor unit 20 capable of sensing both forward and reverse movement directions of the plurality of switch knobs 3; The multi-sensing optical sensor unit 20,
A light emitting unit 22;
First and second light receiving units 24 and 26 installed at intervals so as to receive the light of the light emitting unit 22;
Corresponding to the forward and reverse motions of the respective switch knobs 3, the forward and reverse motions are respectively performed between the light emitting part 22 and the first and second light receiving parts 24 and 26. The index tooth 32 composed of at least one or more tooth segments 32a, 32b (42a, 42b, 42c) capable of blocking light of the light emitting unit 22 received by the first and second light receiving units 24, 26 42) includes a plurality of index plates (30, 40);
The index teeth 32 and 42 of each of the index plates 30 and 40 are the light of the light emitting unit 22 received by the first and second light receiving units 24 and 26 when moving in the forward and reverse directions. It consists of different number of tooth segments (32a, 32b) (42a, 42b, 42c) so that the number of blocking and the order of blocking can be differentiated for each direction of movement. The controller of the vehicle air conditioning apparatus, characterized in that it is possible to detect the direction of movement of the knobs (3), respectively. According to claim 1,
The switch knobs 3 are two rotary switch knobs 3a and 3b that rotate forward and backward according to a user's operation.
The index plate (30, 40), the rotary switch knobs (3a, 3b) together with the rotary type of the ring type (Ring Type) of the first and second index plate (30, 40) characterized in that Vehicle air conditioning system controller. According to claim 2,
The index tooth 32 of the first index plate 30 is composed of two tooth segments 32a and 32b arranged at intervals,
The index tooth 42 of the second index plate 40 is composed of three tooth segments 42a, 42b, and 42c arranged at intervals. According to claim 3,
The tooth segments 32a and 32b of the index tooth 32 of the first index plate 30 are different from each other in width (ℓ1, ℓ2) with respect to the first and second light receiving units 24 and 26, respectively. ,
The tooth segments 42a, 42b, and 42c of the index tooth 42 of the second index plate 40 have respective widths (ℓ3, ℓ4, ℓ5) for the first and second light receiving units 24, 26. The controller of the vehicle air conditioning system, characterized in that the structure is different from each other. The method of claim 4,
Among the first and second tooth segments 32a and 32b of the index tooth 32 of the first index plate 30, the first tooth segment 32a is the first and The second light receiving unit (24, 26) has a width (ℓ1) to block light received one by one, the second tooth segment (32b), the first and second light receiving unit (24, 26) during forward and reverse motion ) Has a width (ℓ2) that can block all of the light received at once;
Among the first to third tooth segments 42a, 42b, and 42c of the index tooth 42 of the second index plate 40, the first tooth segment 42a is the first tooth during forward and reverse motion. The second and third tooth segments 42b and 42c have a width (L3) capable of blocking all the light received at the first and second light receiving units 24 and 26 at a time. A controller for a vehicle air conditioner, characterized in that it has a width (ℓ4, ℓ5) that blocks light received by the first and second light receiving units 24 and 26 one by one. The method according to any one of claims 1 to 5,
The index teeth (32, 42) of the first and second index plates (30, 40), the controller of the vehicle air conditioning apparatus, characterized in that a plurality of equal intervals are formed along the corresponding index plate (30, 40). The method of claim 6,
Each switch knob (3),
When stopping the rotational movement, the index teeth (32, 42) of the index plate (30, 40) are always moved to a position that does not block the light received by the first and second light receiving units (24, 26) By having, the first and second light-receiving units (24, 26) except for the case of the rotational movement, the vehicle air conditioning apparatus characterized in that it is possible to always wait in the state of receiving the light of the light emitting section (22) Controller. The method of claim 7,
The switch knobs 3 are installed to overlap each other so as to have the same axis of rotation, while rotating around the same axis of rotation, the controller of the vehicle air conditioner, characterized in that each has a structure for inputting a specific control value.

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