JPS5939331B2 - Automotive air conditioner operating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an operating device for an air conditioner for an automobile that performs air conditioning in the cabin of an automobile.

BACKGROUND ART Conventionally, as this type of air conditioner for automobiles, for example, the operation panel and structure of which are shown in FIGS. 1 and 2, respectively, are known.

In FIG. 1, 101 is an operation panel, 102 is a fan switch, 103 is a temperature lever, 104 is a mode lever, and 105 is an inside/outside air switching lever.
04 and the inside/outside air switching lever 105 are arranged on the operation panel 101 along with pictures or symbols representing their functions.

Furthermore, as shown in FIG. 2, the automobile air conditioner equipped with the operation panel 101 as described above switches the rotation of the blower 106 in multiple stages using the fan switch 102, and controls the rotation of the air intake door using the inside/outside air switching lever 105. 105
' is switched to the solid line position and the two-dot chain line position to adjust the feed rate of the taken in inside air Ao or outside air A .

), the temperature of the air passing through the heater core 110 is adjusted by changing the opening degree of the vent door 10 which is linked to the mode lever 104.
9 and the floor door 111, the above-mentioned air is sent to the foot nozzle 112 and the defroster nozzle 113.

However, in FIG. 2 above, 107 is the cooler core, 11
Reference numeral 4 denotes a cold air outlet that blows out air cooled by the cooler core 107.

However, in the above-mentioned automobile air conditioner, the amount of air blown by the blower 106 and the amount of air blown by the heater core 110 are different.
Alternatively, the amount of heat exchanged by the cooler core 107 is controlled independently by the fan switch 102 and the temperature lever 103, which are provided independently from each other, and there is no relationship between the two operations, and the fan switch 102 does not operate the knob in stages. The number of revolutions of the blower motor 106 is changed by switching the rotation speed of the blower motor 106, whereas temperature adjustment is performed by changing the stroke amount of the temperature lever 103. The fan switch 10 is
2. Since the temperature lever 103, the mode lever 104, the inside/outside air switching lever 105, etc. are arranged apart from each other, the operability during driving of the automobile is also low.

The present invention has been made in view of the above-mentioned problems in the conventional operation bag device of an automobile air conditioner, and the operation switches of the blower and heat exchange unit are integrated in a matrix shape to improve operability. The object of the present invention is to provide an operating device for an air conditioner for an automobile.

In order to achieve the above object, the present invention provides an air conditioner for an automobile in which air blown by a blower is heat-exchanged by a heat exchange unit and then introduced into the cabin of an automobile, in which a large number of operation switches are arranged vertically and horizontally in a matrix. and a switch panel having letters or symbols indicating the amount of air blown by the blower on one side of the vertical or horizontal side, and letters or symbols indicating the amount of heat exchanged by the heat exchange unit on the other side of the vertical or horizontal side; a first logic circuit into which the signals of the operation switches in each column or horizontal column corresponding to the letter or symbol indicated are input; and a first logic circuit in each column or column corresponding to the letter or symbol indicating the heat exchange amount. The output signals of the respective second logic circuits to which the signals of the operation switches are input and the respective output signals of the first logic circuits are input, and the blower is operated in accordance with the signals of each column corresponding to the letters or symbols indicating the airflow amount. a first control means for controlling the amount of air blown in multiple stages, and the respective output signals of the second logic circuit are input, and the heat exchanger is configured to perform the heat exchange according to the signals in each column corresponding to the letters or symbols indicating the heat exchange amount. It is characterized by comprising a second control means for controlling the heat exchange amount of the unit in multiple stages.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In FIG. 3, numerals 1 to 9 are pushbutton switches using ordinary electrical contacts or pressure-sensitive conductive rubber that are turned on by compression, and numeral 10 are these pushbutton switches 1. ...,
The off switch 10a has the same structure as 9, and the switch panel 10a has a substantially square shape.

The switch panel 10a includes the nine pushbutton switches 1. ..., 9 are arranged in a matrix of 3 rows x 3 columns, and HI representing the rotation speed of the blower 106 is placed on the side of the pushbutton switches 1, 4, and 7 of the first night.
In addition to displaying symbols such as GH and LOW, above pushbutton switches 1, 2, and 3 in the first row are C0LD and WARM, which indicate the temperature of the air supplied to the passenger compartment.
etc. symbols are displayed.

The above-mentioned symbol may be a picture or a color symbol, or in this case, the symbol may be directly displayed on the pressing surface of each operation switch 9.

Above pushbutton switch 1. . . , a horizontally elongated off switch 10 is arranged below 9, and the push button switch 1. ..., 9 and the off switch 10 are pressed to rotate the blower 106 and the automobile engine (not shown).

) to adjust the amount of cooling water flowing into the heater core 110. The opening degree of a water cock 30 (described later) is controlled to adjust the amount of air blown and the amount of heat exchange.

Note that the amount of heat exchange may be adjusted by controlling the opening degree of the air mix door 108.

In the above FIG. 4, 1 to 9 are the above-mentioned push button switches, 10 is the above-mentioned off switch, 11°..., 19
is the pushbutton switch 1 above. . . , 9 is a DT flip-flop that remembers that it is turned on and is reset by the off switch 10.

The above DT flip-flop 11. ..., 19 data terminals, ..., D and the DC power supply +Vcc are connected with the push button switches 1. . . , 9 are connected, respectively, and resistors R1, . . . , Ro are connected between each of the data terminals and the ground.

On the other hand, the DT flip-flop 11. ....

19 reset terminals R2..., R are connected to each other,
These reset terminals R9..., R and the above DC power supply element V
An off switch 10 is connected between the reset terminals R2, .

The above DT flip-flop 11. . . , 19 trigger terminals T, .

The monostable multi-bi break 20 has a push button switch 1. ..., the output of the 9-power OR gate which takes each output of 9 as input is input to the terminal T and is triggered, and a downward pulse having a pulse width determined by the time constant of the resistor R11 and the capacitor C is generated. This is a circuit that outputs a trigger pulse from the Q terminal, and is connected to the above-mentioned DT flip-flop 11. ..., 1
9 are all configured to be triggered at the rising timing of the trigger pulse described above.

Next, the DT flip-flop 11. ....

The output of 19 is sent to a blower motor control circuit 106a that changes the rotation speed of the blower motor M that drives the blower 106 (see FIG. 2) and a control circuit 29a of the double diaphragm 29 that changes the opening degree of the water cock 30 in stages. are inputting each.

The blower motor control circuit 106a has OR gates 22, 23 and 24 (!:,
Transistors Q, , Q2 configuring the first control means.
Q3 and resistance R□2. R13, and the OR gate 22 has D that becomes H level when the pushbutton switches 1, 2, and 3 arranged in the first row are turned on.
-The Q outputs of the T flip-flops 11, 12 and 13 are input, and the OR gate 23 is turned on by turning on the pushbutton switches 4, 5 and 6 arranged in the second row.
The Q outputs of the D-T flip-flops 14.15 and 16, which become the level, and the D outputs of the D-T flip-flops 14.15 and 16, which become the H level, respectively, turn on the pushbutton switches 7.8 and 9 arranged in the third horizontal row in the OR gate 24. -T flip-flop 1
7.18 and 19 Q outputs are input respectively.

Each output of the OR gates 22, 23 and 24 is connected to a transistor Q1. Q
2 and Q3 bases.

The transistor Q1. The emitters of Q2 and Q3 are each connected to ground, while the above-mentioned promotor M is connected between the collector of transistor Q1 and the DC power supply +Vcc, and a resistor R12 is connected between the collector of transistor Q1 and the collector of transistor Q2. , and a resistor R13 is connected between the collector of the transistor Q2 and the collector of the transistor Q3.

On the other hand, the control circuit 29a of the double diaphragm 29 includes OR gates 25 and 26, which are second logic circuits, and transistors Q4. Q, consisting of solenoid valves 27 and 28.

The above-mentioned OR gate 25 is connected to the third column.
The respective Q outputs of the DT flip-flops 13, 16 and 19, which serve as the level, are input, and the other OR gate 26 is connected to the pushbutton switches 2.5. 8 and DT flip-flops 12 and 1 which become H level by turning on 3, 6, and 9, respectively.
The Q outputs of 5°18, 13, 16, and 19 are input.

The outputs of the OR gates 25 and 26 are input to the bases of transistors Q4 and Q5, which control the opening and closing of solenoid valves 27 and 28, respectively.

The emitters of the transistors Q4 and Q5 are respectively connected to ground, while the solenoid part 27a of the solenoid valve 27 is connected between the collector of the transistor Q4 and the DC power supply +Vcc, and the other transistor Q,
A solenoid portion 28a of a solenoid valve 28 is connected between the collector of the solenoid valve 28 and the DC power supply element Vcc.

The solenoid valves 27 and 28 are connected to an engine intake pipe (not shown).

) is a valve that turns on and off the negative pressure introduced into the chambers 31 and 32, respectively, of a double diaphragm 29 consisting of two chambers 31 and 32, each of which has springs 31a and 32a compressed therein. Solenoid valves 27 and 28 are connected to pipes 33 and 34 leading from the above-mentioned intake pipe to chambers 31 and 32 of double diaphragm 29.
They are connected to each other in the middle.

The displacement of the diaphragm valve 35 in the chamber 32 of the double diaphragm 29 is transmitted to the water cock 30 by the rod 36, and the opening degree of the water cock 30 is changed according to the displacement, and engine cooling water is supplied to the heater core 110. The amount of heat exchanged in the heater core 110 of the air sent from the blower 106 is adjusted.

In addition, in FIG. 4 above, the DT flip-flop 1
1. . . , 19, each of the output terminals Q has a push button switch 1. . . , 9 is connected to the cathodes of the light emitting diodes D□, .

..., D, are connected to a DC power supply +Vcc.

The light emitting diode D1. ..., D9 are push button switches 1. . . , are disposed below the pressing surface 9, and the light is transmitted to the outside through holes etc. provided in each of the pressing surfaces (see FIG. 3).

Next, the operation will be explained.

Now, DT flip-flop 11. . . , 19 have all been reset, and their respective Q outputs are at L level and H level, respectively.

Transistor Q of the blower motor control circuit 106a, ,
Q2. Q3 and the transistor Q of the control circuit 29a
, , and Q5 are all off.

The transistor Q1. Due to the off of Q2 and Q3,
Blower motor M is stopped, and transistor Q
4 and Q5 are turned off, no negative pressure is introduced into the double diaphragm 29 from the intake pipe of the engine, so the water cock 30 is in a fully closed state.

In the above state, nine push button switches arranged in a matrix of 3 rows x 3 columns 1. ....

For example, if the pushbutton switch 1 in the first row of the switches 9 is turned on, the data input to the DT flip-flop 11 becomes H level.

On the other hand, the monostable multi-bi break 20 is triggered when the pushbutton switch 1 is turned on, and its Q output falls to the L level, and rises to the H level after a certain period of time determined by CxRo (for example, several tens of m5ec). .

When the Q output of the monostable multi-bi break 20 rises to H level, the DT flip-flop 11 is triggered, and its Q output and sub-output become Q=H and Q=L.

The light emitting diode D1 lights up due to Q=L, and
When Q=H, the transistor Q1 is turned on, and the DC voltage +Vcc is applied to the proarmotor M without a voltage drop caused by the resistors R□2 and R13, so the proarmotor M rotates at high speed.

On the other hand, at this time, since the output Q of the DT flip-flop 11 is not input to the OR gates 25 and 26 of the control circuit 29a, the transistors Q4 and Q5 are off, and the solenoid valves 27 and 28 are both closed. There is.

Therefore, the double diaphragm 29 urges the rod 36 in the direction of the arrow by the spring force of its springs 31a and 32a,
Since the water cock 30 is in a fully closed state, the air supplied from the blower 106 directly flows into the fifth vehicle compartment.

In the above state, when the push button switch 2 is further pressed, the outputs Q and Q of the DT flip-flop 12 become Q=H and Q=L, respectively, in the same manner as above.

Note that the DT flip-flop 11 is L for data input.
level is input, and the Q terminal output of the monostable multi-bi break 20 is input to the trigger terminal T, but the Q terminal output of the monostable multi-bi break 20 is
As it rises to H level, D-T flip-flop 1
The outputs Q and A of 1 become Q=L and Q=H, respectively.

From the above, in the pro-arr motor control circuit 106a, the transistor Q1 is in the on state, and the pro-arr motor M rotates at high speed in the same manner as described above, whereas in the control circuit 29a, the output Q1 is in the on state.
is input to the OR gate 26, so the transistor Q5
turns on and opens the solenoid valve 28.

Therefore, since negative pressure is introduced into the chamber 32 of the double diaphragm 29, the diaphragm valve 35 is activated by the spring 32a.
is displaced in the direction of compression, and the walk cock 30 is half-opened.

Therefore, engine cooling water flows into the heater core 32, and the heater core 32 exchanges heat with the air supplied from the blower 106 according to the opening degree of the water cock 30, and then sends it out to the passenger compartment. .

In the above state, when the pushbutton switch 3 is further turned on, the outputs Q and Q of the DT flip-flop 13 become Q2H and Q=L, respectively.

Note that the outputs Q and Q of the DT flip-flop 12 are set to Q=
L and ζ-H.

From the above, the blower motor M continues to rotate at high speed in the same way as above, but since the above output Q=H is input to the OR gates 25 and 26 of the control circuit 29a, the double diaphragm 29 fully opens the water cock 30. do.

Therefore, in the above state, the amount of heat exchanged by the heater core 32 becomes maximum, and the temperature of the air sent into the vehicle interior becomes maximum.

Next, when the pushbutton switches 4, 5, and 6 in the second row are pressed in order to turn them on, in this case, the transistor Q2 of the blower motor control circuit 106a is turned on, so that the blower motor M has a voltage drop caused by the resistor R12. While the water cock 30 rotates at a medium speed after being decelerated by
As in the case where the first row of pushbutton switches 1, 2, and 3 are turned on, the openings are sequentially fully closed, half-opened, and fully opened, and the temperature of the air sent into the vehicle interior increases in stages.

When the pushbutton switches 7.8 and 9 in the third row are pressed in sequence to turn on, the blower motor control circuit 106a
Since the transistor Q3 turns on, the pro-armotor M is decelerated by the voltage drop caused by the resistors R1□ and RlB and rotates at a low speed, while the water cock 30 rotates at a low speed.
Similarly to the above, when the pushbutton switch 7 is turned on, it is fully open, when the pushbutton switch 8 is turned on, it is half open, and when the pushbutton switch 9 is turned on, it is fully open, and the temperature of the air sent into the passenger compartment increases. It will rise in stages.

From the above description, it can be seen that the pushbutton switches arranged in a matrix 1. ..., 9, the more the light emitting diode lights up in the upper right corner of the switch panel 10a, the larger the amount of air blown by the blower motor M and the amount of heat exchange of the heater core 32; The more the light-emitting diode lights up, the smaller the amount of air blown and the amount of heat exchanged, and the amount of air blown and heat exchanged are displayed two-dimensionally graphically, greatly improving operability. Ru.

In this embodiment, by using the double diaphragm 29, two second logic circuits are used to switch between the three states as in the present embodiment, so the structure is simple and inexpensive.

In the above explanation, a basic embodiment of the present invention has been described, but for example, the control circuit 29a is not implemented in this embodiment, and the control circuit 29a is constructed of three logic circuits like the blower motor control circuit 106a. It may be.

Further, various configurations can be made within the scope of the present invention, such as using a chopper circuit or the like in the blower motor control circuit 106a to change the rotation speed of the blower motor in multiple stages.

As is clear from the detailed description above, the present invention
A switch panel in which a large number of operation switches are arranged vertically and horizontally in a matrix is used to control the first control means for controlling the air flow rate of the blower in multiple stages and the second control means for controlling the heat exchange amount. the first control means and the second control means;
Since the operation switches of the control means are integrated and arranged in a matrix, the driver can operate the pushbutton switches by sensing with his or her fingers the position of the pushbutton switch to obtain the desired amount of air flow and heat exchange. Operability is greatly improved.

Furthermore, if light is projected from the push button switch that is turned on, the amount of air blown and the amount of heat exchanged can be displayed two-dimensionally graphically, further improving the operability.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an operation panel of a conventional air conditioner for an automobile, FIG. 2 is an explanatory diagram of the air conditioner for an automobile, and FIG. 3 is a plan view of an operation switch of an air conditioner for an automobile according to the present invention. , FIG. 4 is a circuit diagram of an air conditioner for an automobile equipped with the operation switch shown in FIG. 3. 1,...,9...Push button switch, 10.
...Off switch, 10a...Switch panel, 11°...19...D-T flip-flop, 22,23°24.25,26...・
OR gate, 29a...control circuit, 29...
...Double diaphragm, 30...Walk cock, 106a...Blower motor control circuit, 1
06... Blower, M... Blower motor, D,..., D,... Light emitting diode.

Claims (1)

[Scope of Claims] 1. In an air conditioner for an automobile in which air blown by a blower is heat-exchanged by a heat exchange unit and then introduced into the cabin of an automobile, a large number of operation switches are arranged in a matrix in a vertical or horizontal direction, and a switch panel with letters or symbols indicating the amount of air blown by the blower vertically or horizontally on one side, and letters or symbols indicating the amount of heat exchanged by the heat exchange unit on the other side; and letters or symbols indicating the amount of air blown by the heat exchanger unit. a respective first logic circuit into which the signals of the operation switches in each column or row corresponding to the symbol are input; and signals of the operation switches in each row or column corresponding to the letter or symbol indicating the heat exchange amount; The output signals of each of the second logic circuit and the first logic circuit are inputted, and the amount of air blown by the blower is determined according to the signal in each column corresponding to the letter or symbol indicating the amount of air blown. a first control means for controlling the heat exchange unit in multiple stages, and output signals of the second logic circuit are input, and the heat exchange unit is controlled in accordance with the signals in each column corresponding to the letters or symbols indicating the heat exchange amount. An operating device for an air conditioner for an automobile, comprising: a second control means for controlling the amount of exchange in multiple stages.