KR101846664B1

KR101846664B1 - Air conditioning system for vehicle

Info

Publication number: KR101846664B1
Application number: KR1020160052919A
Authority: KR
Inventors: 신기영; 이상신; 조광운; 권동호; 진건수; 정대익; 김인혁; 석상인
Original assignee: 현대자동차주식회사; 한온시스템 주식회사; 주식회사 두원공조
Priority date: 2016-04-29
Filing date: 2016-04-29
Publication date: 2018-04-09
Also published as: KR20170124123A

Abstract

A sub-temp door connected to one side of the sub-rotation shaft to open or close the air passage according to rotation of the sub-rotation shaft; A sub-lever having one side rotatably coupled to the sub-rotation shaft and rotatable about a sub-rotation axis, and a sub-guide protrusion protruding outward at the other side; A main tem- perature door having one side coupled to the main rotation shaft and configured to open or close the air flow path in accordance with rotation of the main rotation shaft; A main lever having one side connected to the main rotation shaft and rotatable about a main rotation axis, and a main guide protrusion protruding outward on the other side; A plurality of guide slits are provided on the inner side of the cam shaft to receive the sub guide protrusions and the main guide protrusions, respectively. As the guide protrusions slide in the guide slits, a cam plate ; And an actuator for rotating the cam plate.

Description

TECHNICAL FIELD [0001] The present invention relates to an air conditioning system for a vehicle,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for a vehicle, and more particularly, to an air conditioner for a vehicle capable of implementing an individual air conditioner system.

Generally, an automobile is provided with an air conditioner to create a pleasant environment in a car. The air conditioner refers to a function of an air conditioner to cool the room in summer and a heater function to warm the room in winter. Of course, such an air-conditioning apparatus has a dehumidifying function for preventing fogging generated in the windshield when it rains, and an icing function for removing the wind generated by freezing moisture on the surface of the windshield in winter, There is also a close relationship with safe operation.

1 and 2 are views showing a conventional air conditioner for a vehicle. Conventionally, a mode door is provided between the evaporator 30 'and the heater core 10' for air conditioning of the passenger seat P by separating the driver's seat (not shown) and the passenger's seat P side via the partition 40 ' The actuator 700 'of the tempo door 300' and the floor door 800 'of the mode door 900', the actuator 910 'of the mode door 900', the deep door 600 ', the tempo door 300' ). Therefore, when a passenger is aboard the passenger seat P, cooling and heating is performed in the same manner as in the case of the driver's seat. Since the driver's seat and the passenger seat P are separated by the partition wall 40 ', when there is no occupant on the passenger's seat side, the actuator 910' of the mode door 900 ' 900 ') had to be closed to carry out individual cooperation.

That is, when it is determined that the individual air conditioning system is turned on in the control unit (not shown), the actuator 910 'of the mode door 900' is operated to move the vent door (not shown) 'To prevent the wind from being discharged to the passenger seat P side. In this case, the cost is increased as a dual mode system applied to an advanced vehicle.

In addition, even in the case of an advanced specification, in the case of an eco-friendly vehicle, if such a system is not applied, there is a disadvantage in that power consumption is increased and travel distance is reduced due to air conditioning to an empty driver's seat.

It should be understood that the foregoing description of the background art is merely for the purpose of promoting an understanding of the background of the present invention and is not to be construed as an admission that the prior art is known to those skilled in the art.

KR 10-2008-0076219 A

The present invention has been proposed in order to solve such a problem, and it is an object of the present invention to provide an individual air conditioning system, in which a dual mode system applied to an advanced vehicle can be applied to a general vehicle, And an object of the present invention is to provide a vehicle air conditioner capable of reducing the power consumption and increasing the mileage.

According to another aspect of the present invention, there is provided a vehicle air conditioning system, including: a sub-temp door connected to a sub-rotation shaft to open or close an air passage according to rotation of the sub-rotation shaft; A sub-lever having one side rotatably coupled to the sub-rotation shaft and rotatable about a sub-rotation axis, and a sub-guide protrusion protruding outward at the other side; A main tem- perature door connected to one side of the main rotation shaft to open or close the air flow passage in accordance with rotation of the main rotation shaft; A main lever coupled to the main rotation shaft to be rotatable about a main rotation axis and having a main guide protrusion protruded outward at the other side; A plurality of guide slits are provided on the inner side of the cam shaft to receive the sub guide protrusions and the main guide protrusions, respectively. As the guide protrusions slide in the guide slits, a cam plate ; And an actuator for rotating the cam plate.

The sub lever may comprise a first link and a second link.

One side of the first link may be coupled with the sub-rotation shaft, and the other side may be formed with a coupling slit along the longitudinal direction.

The second link may have a coupling protrusion coupled to the first link and the other may be coupled to the body by a link rotation axis and the sub guide protrusion may protrude from the other end.

And a coupling protrusion is formed at one side of the second link so that the coupling protrusion is slid in the coupling slit so that the linear movement of the link in the vertical direction And the sub-rotating shaft is rotated to open / close the sub-temp door.

The cam plate may include a sub guide slit into which the sub guide protrusion is inserted and a main guide slit into which the main guide protrusion is inserted, and the sub guide slit and the main guide slit may be positioned at symmetrical positions with respect to each other.

The sub guide slit may be formed to have a predetermined length along the arc shape of the outermost circumferential surface of the cam plate.

The sub guide slit may have a depressed portion formed at a predetermined position in the direction of the cam rotation axis, and a plurality of arc shapes may be formed around the depressed portion.

When the sub guide protrusion is located on the front side in the advancing direction of the depressed portion, the tempo door is controlled so as to discharge air into the interior of the vehicle. When the sub guide protrusion is located on the rear side in the advancing direction of the depressed portion, So that the air can not be discharged into the room.

The main guide slit is formed in an arc shape and may be formed to have a shape starting from the outermost circumferential surface of the cam plate and approaching the cam rotation axis side toward the rear side.

A guide plate for guiding the air can be formed in the left and right direction of the vehicle on the rear side wall of the air flow path in which the deep door is formed.

The guide plate may be formed on the driver's seat side.

The sub-temp door can open / close an air flow path through which the warmth that has passed through the heater core is discharged to the room of the vehicle.

The main tem- perature door can open / close an air flow path through which the cool air having passed through the evaporator is discharged to the inside of the vehicle.

According to the automotive air conditioner having the above-described structure, the tempo door is composed of the main tem- perature door and the sub tem- perature door, and the tem- por door is controlled through the shape of the cam plate, so that an actuator for controlling the mode door is separately formed on the passenger seat side So that it can be implemented so as to be operated simultaneously with the mode door on the driver's seat side, thereby simplifying the configuration. Therefore, there is an advantage that the individual air conditioning mode can be realized by applying the dual mode system even when the vehicle is not an advanced vehicle, which can save costs more than the conventional one. In addition, when the vehicle is mounted on an environmentally friendly vehicle, the air discharged to the passenger seat side can be blocked without controlling the mode door, thereby reducing consumption power and increasing the travel distance.

1 and 2 are views showing a conventional air conditioner for a vehicle.
3 is a perspective view of a vehicle air conditioner according to an embodiment of the present invention.
4 is a detailed view of Fig.
5 is a detailed view of the cam structure of the present invention.
Figs. 6 to 8 are diagrams showing operation states of each mode of Fig. 5; Fig.
9 to 16 are sectional views showing the flow of air for each mode.
17 is a detailed view of the operation of Fig.

Hereinafter, a vehicle air conditioning system according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 3 is a perspective view of a vehicle air conditioner according to an embodiment of the present invention, and FIG. 4 is a detailed view of FIG. 5 is a view showing the cam structure of the present invention in detail. FIGS. 6 to 8 are views showing operation states of each mode of FIG. 5. FIG. Figs. 9 to 16 are sectional views showing the flow of air for each mode, and Fig. 17 is a detailed view of the operation of Fig.

The vehicle air conditioning system according to the preferred embodiment of the present invention includes a sub temp door 100 having one side connected to the sub rotation shaft 110 and opening or closing the air flow path according to the rotation of the sub rotation shaft 110; A sub lever 200 having one side coupled to the sub rotation shaft 110 and rotatable about the sub rotation axis 110 and the sub guide protrusion 231 protruding outward at the other side; A main temp door 300 connected to one side of the main rotation shaft 310 to open or close the air flow path according to the rotation of the main rotation shaft 310; A main lever 400 having one side coupled to the main rotation axis 310 and rotatable about the main rotation axis 310 and the other side having a main guide protrusion 410 protruding outward; A plurality of guide slits for rotating the cam rotation axis 510 and having the sub guide protrusions 231 and the main guide protrusions 410 inserted therein are provided on the inner side of the guide slits so that the guide protrusions slide in the guide slits, A cam plate (500) for controlling rotation of the tempo door; And an actuator 700 for rotating the cam plate 500. The actuator 700 is coupled to the body 90 by a bracket 710.

The present invention is applied to the side of the passenger seat (P), particularly of the vehicle to which the individual air conditioning system is applied, and the drawings of the present invention are shown and explained mainly on the side of the passenger seat (P).

3 to 4, it is confirmed that the driver's seat D and the passenger seat P are divided through the partition wall 40. As shown in FIG. Therefore, air conditioning of the driver's seat (D) and the passenger seat (P) can be separately performed. The passenger's seat P is provided with a tempo door for regulating the temperature of the air flowing into the passenger compartment of the vehicle. The tempo door includes a main temp door 70 for opening or closing a cool air passage 70 passing through the evaporator 30, And the sub-temp door 100 that opens or closes the flow path 50 of warmth that has passed through the heater core 10 and the heater core 300. The main temp door 300 and the sub temp door 100 are driven by the actuator 700.

One side of the sub-temp door 100 is coupled to the sub-rotating shaft 110 to open or close the warming channel 50 according to the rotation of the sub-rotating shaft 110. The other side of the sub-temp door 100 may be rotatably coupled to the partition 40 or the body 90. The sub-rotation shaft 110 is rotated by the operation of the sub-lever 200. The sub-lever 200 may be formed of one link, but in the present embodiment, the first link 210, which is a plurality of links, And the second link 230, as shown in FIG.

A first through hole 213 is formed at one side of the first link 210 so as to be coupled with the sub rotation shaft 110 to insert the sub rotation shaft 110. The other side of the first link 210 has a coupling slit 211, . A second protrusion 235 is formed at one side of the second link 230 to be coupled with the first link 210 and a second through hole 237 is formed at the other side of the second link 230 to form the second through hole 237 And is coupled to the body 90 of the air conditioner by a link rotation shaft 233 inserted into the air conditioning apparatus. The sub link protrusion 231 protrudes from the other end of the second link 230. The link rotation shaft 233 of the second link 230 may be formed by inserting a bush 238 and a bolt 239 through the second through hole 237 and coupled to the body 90.

Accordingly, the coupling protrusion 235 of the second link 230 slides in the coupling slit 211 of the first link 210, so that the first link 210 and the second link 230 are vertically moved So that the sub-rotating shaft 110 is rotated to open and close the sub-temp door 100. As shown in FIG. Of course, the sub lever 200 is operated in accordance with the rotation of the cam plate 500 by the operation of the actuator 700, and such operation will be described later.

One side of the main temp door 300 is connected to the main rotation shaft 310 and opens or closes the cooling air passage 70 according to the rotation of the main rotation shaft 310. The other side of the main temp door 300 may be rotatably coupled to the partition 40 or the body 90. The main rotation shaft 310 is rotated by the operation of the main lever 400. The main lever 400 has a third through hole 430 connected to the main rotation axis 310 at one side thereof, The main guide protrusion 410 protruding outward is formed. Like the sub lever 200, the main lever 400 is operated in accordance with the rotation of the cam plate 500 by the operation of the actuator 700, and such operation will be described later. The main temp door 300 is coupled with a main link (not shown) formed separately from the main rotation shaft 310 and is slid along the main guide slit 550 of the cam plate 500, 70, respectively.

The cam plate 500 is coupled to the body 90 so as to rotate about the cam rotation axis 510 by the operation of the actuator 700. A sub guide slit 530 in which the sub guide protrusion 231 is inserted and a main guide slit 550 into which the main guide protrusion 410 is inserted are formed inside the cam plate 500. The sub guide slit 530 is provided with the sub guide protrusion 231 for opening and closing the sub templet door 100 and the main guide slit 550 is provided with the main guide door 300 for opening / Since the protrusion 410 is inserted and slid, it is preferable that the sub guide slit 530 and the main guide slit 550 are positioned symmetrically with respect to each other.

The sub guide slit 530 is formed to have a predetermined length along the arc shape of the outermost circumferential surface of the cam plate 500. Particularly, the sub guide slit 530 has a depressed portion 531 formed at a predetermined position in the direction of the cam rotation axis 510, and a plurality of arc shapes are formed around the depressed portion 531.

The indentation 531 may be formed at a position 2/3 from the front of the advancing direction of the sub guide slit 530. Therefore, the sub guide protrusion 231 slides in the sub guide slit 530 in accordance with the rotation of the cam plate 500. After the rotation of the cam plate 500 is started, the sub guide protrusion 231 passes through a section from the front side to the 2/3 point of the sub guide slit 530 and is located between the indentation portion 531 The sub-temp door 100 and the main tem- per door 300 are controlled so as to discharge air into the interior of the vehicle, and the interval from the 2/3 point of the sub guide slit 530 to the remaining 1/3 point When the sub guide protrusion 231 is located, both the sub-temp door 100 and the main tem- per door 300 are closed so that air can not be discharged into the passenger compartment of the vehicle, So that a driver-only mode for preventing ejection is realized.

In this embodiment, as shown in FIGS. 6 to 8, the angle at which the sub guide slit 530 is formed is set to 120 degrees. Therefore, the angle corresponding to the 2/3 section ahead of the traveling direction side is 80 °, and the section from the 2/3 section forward of the traveling direction side to the remaining 1/3 point is 40 °. However, this configuration can be changed as much as possible depending on the environment or design of the vehicle, and is not particularly fixed at the above-mentioned angle.

The main guide slit 550 is formed in an arc shape and starts to be formed on the outermost circumferential surface of the cam plate 500 and is formed so as to gradually approach the cam rotation axis 510 side toward the rear side. That is, unlike the sub guide slit 530, the reference center of the arc is located at a position other than the cam rotation axis 510. Therefore, the rotational distance of the main tem- per door 300 becomes shorter as the cam plate 500 starts to rotate and moves toward the second half.

The operations of the cam plate 500, the sub-temp door 100 and the main tem- per door 300 according to modes will be described with reference to Figs.

6 shows a case where a passenger is present in the passenger seat P and shows a cooling mode, and the cam plate 500 is located at a reference position. Therefore, the sub guide protrusion 231 is positioned at the forefront of the sub guide slit 530, and the main guide protrusion 410 is also located at the forefront of the main guide slit 550. Therefore, the sub-temp door 100 is closed to close the warm air channel 50, and the main tempo door 300 is opened to open the cool air channel 70. After passing through the evaporator 30, The cool air is discharged to the inside of the vehicle through the mode door 900. This air flow is shown in Fig.

When the control unit (not shown) confirms that the MAX COOL signal has been input, it checks the position of the main temp door 300 and checks the position of the main temp door 300, To the maximum cooling (MAX COOL) position, and controls the sub-temp door (100) to a position for closing the warm channel (50). Therefore, it is possible to provide cool air to the user while preventing the heat and the cool air, which are exchanged between the warm channel 50 and the cool channel, from being mixed by the sub-temp door 100. HEAT PICK UP TECHNOLOGY Thus, Since the warm air is not mixed with the cold air, it is easy to secure the maximum cooling performance.

7 shows a case where the passenger is present in the passenger seat P and shows a heating mode. The cam plate 500 rotates by 80 degrees which is the first 2/3 section by driving the actuator 700 do. Therefore, the sub guide protrusion 231 is moved along the sub guide slit 530 and caught by the indent 531. Also, the main guide protrusion 410 is also slid along the main guide slit 550. Therefore, by closing the main temp door 300 to close the cool air passage 70, all the air introduced through the evaporator 30 is moved toward the warm air passage 50 through the heater core 10 The sub-temp door 100 is opened and the warm channel 50 is opened so that the warmth that has passed through the heater core 10 is discharged to the inside of the vehicle through the mode door 900. This air flow is shown in Fig.

When the control unit (not shown) confirms that the MAX WARM signal is input, the control logic checks the position of the main temp door 300 and checks the position of the main temp door 300, To the maximum heating position (MAX WARM), and controls the sub-temp door (100) to a position for opening the warm channel (50). Therefore, the main temp door 300 closes the cool air passage 70, so that cool air can be supplied to the user without inflow of cool air. Therefore, as in the cooling mode, cool air is not mixed into warm air, so that it is easy to secure the maximum heating performance.

Lastly, FIG. 8 shows a driver only mode in which the passenger is not present in the passenger seat P and only the driver's seat D performs air conditioning. The cam plate 500 is rotated by 40 degrees which is the remaining 1/3 section by driving the actuator 700. [ Therefore, the sub guide protrusion 231 is removed from the indentation 531 to move the remaining section of the sub guide slit 530, so that the sub-tempo door 100 is closed, Is closed. The main guide protrusion 410 moves the remaining portion of the main guide slit 550 and moves a small distance in the form of the main guide slit 550. Therefore, the main temp door 300 is kept closed to close the cool air passage 70. Therefore, the cool air passage 70 and the warm air passage 50 are closed by the main temp door 300 and the sub-tempo door 100, so that air is not discharged into the passenger compartment P of the vehicle. This air flow is shown in Fig.

When the control unit (not shown) confirms that the individual air conditioning system is turned on, it checks the position of the main temp door 300 and checks the position of the main temp door 300 After moving to the MAX WARM position, the sub-temp door 100 is controlled to a position where it closes the warm channel 50. Accordingly, when only the driver is boarded in the vehicle, the air conditioning is not separately performed in the passenger seat P by adjusting only the tempo door without adjusting the mode door 900 through the actuator 910 of the mode door 900 You can.

In summary, the main temp door 300 operates in the order of cooling mode -> heating mode -> heating mode, and the sub temp door 100 operates in the order of closing -> opening -> closing. Therefore, the mode door 900 is formed so that the driver's seat D is connected to the main door and the driver's seat D is connected to the driver's seat D through the mode door 900 actuator 910 The mode door 900 can be operated in the same manner as in the operation of the mode door 900 of the mode door 900 so that the control can be simplified and the power consumption can be reduced There are advantages. That is, it is possible to implement a dual mode system in which air is not discharged to the passenger seat P alone even if the mode door 900 of the passenger seat P is not driven by the actuator 910 .

In the case of FIG. 12, air conditioning is performed on the passenger seat P, and the air conditioning is performed in a mix mode (MIX Mode). At this time, the cam plate 500 is rotated to the midpoint between the cooling mode and the heating mode to open both the sub-temp door 100 and the main tem- per door 300, It can be implemented by adjusting the degree of opening. At this time, the deep door 600 is opened at a predetermined angle.

At this time, the control logic (not shown) confirms the position of the main temp door 300 and moves the main temp door 300 to a position corresponding to the temperature condition , And controls the sub-temp door (100) to a position for opening the warm channel (50).

14, the air conditioning is not performed on the passenger seat P, and the air conditioning mode of the driver's seat D is in the mix mode. At this time, the driver-only mode is implemented as shown in FIG. 8 to FIG. 9, and the deep-door 600 is controlled to be opened by a predetermined angle more than the case where the deep- . The reason for the above control is that if air is not discharged to the passenger seat P side, moisture is generated in the windshield of the vehicle, so that air for cooling and heating is discharged to the passenger seat P side The air for removing moisture through the deep door 600 on the driver's seat side D may be discharged to increase the amount of discharged air.

In the case of FIG. 13, air conditioning is performed on the passenger seat P, and the floor mode is shown. At this time, the cam plate 500 is rotated to the midpoint between the cooling mode and the heating mode to open both the sub-temp door 100 and the main tem- per door 300, It can be implemented by adjusting the degree of opening. In addition, the mode door 900 is closed, and the floor door 800 is opened so that all the air is discharged toward the foot of the passenger. Also at this time, the deep door 600 is opened at a predetermined angle.

In the case of FIG. 15, air conditioning is not performed on the passenger seat P, and the air conditioning mode of the driver's seat (D) is a floor mode. At this time, the driver-only mode is implemented as shown in FIGS. 8 to 9, and the deep-door 600 is controlled to be opened by a predetermined angle more than the case where air conditioning is performed also on the passenger seat P of FIG. 13 . The reason for the above control is that if air is not discharged to the passenger seat P side, moisture is generated in the windshield of the vehicle, so that air for cooling and heating is discharged to the passenger seat P side The air for removing moisture through the deep door 600 on the driver's seat side D is increased to increase the amount of air to be discharged.

As described above, in the floor mode and the mixed mode, and in the driver-only mode, the deep door 600 is opened by a predetermined angle more than when the cooling and heating air is discharged to the passenger seat P side. Accordingly, the amount of air discharged through the deep door 600 on the driver's seat side D is increased to allow air to move to the deep door 600 on the passenger seat P side, thereby generating moisture in the windshield of the vehicle . This control is performed only in the floor mode and the mix mode, and controls the deep door 600 to maintain the existing position in the vent mode (VENT), the bi-level mode (B / L), and the deep mode (DEF).

FIGS. 16 to 17 illustrate how air is discharged toward the defrost duct in the floor mode and the mix mode, and are viewed from the driver's seat side, unlike the other drawings.

A guide plate 610 for guiding air discharged through the deep door 600 is formed in the left and right direction of the vehicle at a rear side wall of the air duct in which the deep door 600 is formed. As described above, no air is discharged to the passenger-side P-side deep door 600 when in the driver-only mode, the floor mode, or the mix mode. 17, the guide plate 610 is formed on the driver's seat D side so that air discharged through the driver's seat side D-door 600, which is more open than usual, (P) side deep door (600) by the driver (610). By controlling as described above, it is possible to improve the blowing on the side of the deep door 600 while increasing the amount of the total air discharged through the deep door 600, thereby preventing moisture from being generated in the windshield of the passenger seat P will be.

Therefore, according to the air conditioner of the embodiment of the present invention, the tempo door is composed of the main tem- perature door and the sub tem- perature door, and the tempo door is controlled through the shape of the cam plate, It is not necessary to separately configure an actuator to be controlled and can be operated simultaneously with the mode door on the driver's seat side, thereby simplifying the configuration. Therefore, there is an advantage that the individual air conditioning mode can be realized by applying the dual mode system even when the vehicle is not an advanced vehicle, which can save costs more than the conventional one. In addition, when the vehicle is mounted on an environmentally friendly vehicle, the air discharged to the passenger seat side can be blocked without controlling the mode door, thereby reducing consumption power and increasing the travel distance.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the following claims It will be apparent to those of ordinary skill in the art.

10: heater core
30: Evaporator
40:
50: Warming oil
70: warm air) Euro
90: Body
100: Sub temp door
110: Sub-
200: sub lever
210: first link
211: joining slit
213: first through hole
230: second link
231: Sub guide projection
233: Link rotating shaft
235: engaging projection
237: second through hole
238: Bush
239: Bolt
300: Main temp door
310: main rotating shaft
400: Main lever
410: Main guide projection
430: Third through hole
500: cam plate
510: cam rotating shaft
530: sub guide slit
531:
550: Main guide slit
600: deep door
610: guide plate
700: Actuator
710: Bracket
800: Floor door
900: Mode door
910: Actuator

Claims

A sub-temp door connected to one side of the sub-rotation shaft to open or close the air passage according to rotation of the sub-rotation shaft;
A sub-lever having one side rotatably coupled to the sub-rotation shaft and rotatable about a sub-rotation axis, and a sub-guide protrusion protruding outward on the other side;
A main tem- perature door having one side coupled to the main rotation shaft and configured to open or close the air flow path in accordance with rotation of the main rotation shaft;
A main lever having one side connected to the main rotation shaft and rotatable about a main rotation axis, and a main guide protrusion protruding outward on the other side;
A plurality of guide slits are provided on the inner side of the cam shaft to receive the sub guide protrusions and the main guide protrusions, respectively. As the guide protrusions slide in the guide slits, a cam plate ; And
And an actuator for rotating the cam plate,
The cam plate is formed with a sub guide slit into which the sub guide protrusion is inserted, a depression is formed at a predetermined point of the sub guide slit,
The main-tem- perature door and the sub-tem- per door are controlled so as to discharge air into the interior of the vehicle, and when the sub-guide projection is located on the rear side in the advancing direction of the depressed portion The main tem- perature door and the sub-tem- per door are controlled so as not to discharge air into the interior of the vehicle.

The method according to claim 1,
And the sub lever is constituted by a first link and a second link.

The method of claim 2,
Wherein one side of the first link is coupled to the sub rotation shaft, and a coupling slit is formed on the other side along the longitudinal direction.

The method of claim 2,
Wherein a coupling protrusion is formed on one side of the second link and the other side is coupled to the body by a link rotation shaft and the sub guide protrusion is protruded on the other end.

The method of claim 2,
A coupling slit is formed along the longitudinal direction on the other side of the first link and a coupling protrusion is formed on one side of the second link so that the coupling protrusion slides in the coupling slit, Wherein the sub-rotation shaft is rotated in accordance with a linear motion of the sub-tank door in the up-and-down direction to open / close the sub-temp door.

The method according to claim 1,
Wherein the cam plate is provided with a main guide slit into which the main guide projection is inserted, and the sub guide slit and the main guide slit are located at symmetrical positions with respect to each other.

The method according to claim 1,
Wherein the sub guide slit is formed to have a predetermined length along the arc shape of the outermost circumferential surface of the cam plate.

The method of claim 6,
Wherein the sub guide slit is formed in a plurality of arc shapes about the indentation portion.

delete

The method of claim 6,
Wherein the main guide slit is formed in an arc shape and is formed in a shape starting from the outermost circumferential surface of the cam plate and approaching the cam rotation axis side toward the rear side.

The method according to claim 1,
Wherein a guide plate for guiding air is formed in the left side direction of the vehicle on the rear side wall of the air flow path in which the deep door is formed.

The method of claim 11,
Wherein the guide plate is formed on the driver's seat side.

The method according to claim 1,
Wherein the sub-temp door opens / closes an air flow path through which the warmth that has passed through the heater core discharges into the interior of the vehicle.

The method according to claim 1,
Wherein the main tem- perature door opens / closes an air flow path through which cool air having passed through the evaporator is discharged to the inside of the vehicle.