KR101105570B1 - Intake door drive of car air conditioning system - Google Patents

Abstract

The present invention relates to an intake door driving device of a vehicle air conditioner, by allowing a pair of intake doors to be driven simultaneously by a pair of gear levers and a cable, thereby transmitting the same driving force to the pair of intake doors. The purpose of the present invention is to improve the operating force and to strengthen the holding force of the doors, thereby preventing the inflow of air by the vehicle speed.

In order to achieve the above object, the present invention is to drive the pair of intake door 24, 25 for opening and closing the outside air inlet 21 and the inside air inlet 22, 23 by a single cable 50 at the same time The ends of the rotating shafts 24a and 25a of the pair of intake doors 24 and 25 are axially engaged with the pair of levers 40 and 41 by respective link arms 30 and 31, and the pair of levers Gears 40c and 41c interlocked with each other on one side of the 40 and 41, and connect and install the cable 50 to only one of the levers 40 and 41. It is characterized by one.

Air Conditioning Units, Blowers, Intake Doors, Link Arms, Lever, Cables, Operating Force, Driving Force

Description

Intake door driving device for automobile air conditioning system {Driving Apparatus of Intake Door for Car Air Conditioning System}

1 is a schematic view showing a configuration of a general vehicle air conditioner.

2 is a cross-sectional view of a blower for a vehicle air conditioner according to a conventional example.

3 is a partial cross-sectional view of a blower for a vehicle air conditioner according to another conventional example.

4 is an overall perspective view of a vehicle air conditioner to which an intake door driving device according to the present invention is applied.

FIG. 5 is a perspective view of a vehicle air conditioner showing a state viewed from the direction 'A' in FIG. 4. FIG.

6 is a configuration diagram of an intake door applied to an intake door driving apparatus according to the present invention.

7 is a view showing a part of the vehicle air conditioner to which the intake door driving device according to the present invention is applied.

8 is an operational state diagram of the intake door driving apparatus according to the present invention;

** Description of the symbols for the main parts of the drawings **

10: air conditioning case                 

20 blower

21: outside air inlet

22: 1st bet inlet

23: 2nd bet inlet

24: First Intake Door

25: second intake door

24a, 25a: rotating shaft

30: first link arm

31: second link arm

40: driving lever

41: driven lever

40a: first hinge portion (Hinge)

40b: first connection part

40c: first gear part

40d: Cable connection

41a: second hinge portion

41b: second connection portion

41c: second gear part

The present invention relates to an intake door driving device of an automotive air conditioner, and more particularly, by allowing a pair of intake doors to be driven simultaneously by a pair of gear levers and a cable, the same driving force is applied to a pair of intake doors. The present invention relates to an intake door driving apparatus of a vehicle air conditioner which can improve the operating force and improve the supporting force of the doors, thereby preventing the inflow of air by the vehicle speed.

In general, a vehicle air conditioner is a device for cooling or heating an interior of an automobile by introducing air inside and outside the vehicle by a blower, cooling or heating the air through a heat exchanger, and then blowing the air into the interior of the vehicle.

The air conditioning device of the vehicle, as shown in Figure 1, the air conditioning case 100; An evaporator 111 and a heater core 112 that are sequentially installed at predetermined intervals in the air conditioning case 100; Is installed rotatably between the evaporator 111 and the heater core 112 has a structure including a temporal door 113 to adjust the temperature of the air passing through the evaporator 111 and the heater core 112 selectively It is. Furthermore, a blower 200 is installed at the inlet of the air conditioning case, and a defrost discharge port 114 for discharging air supplied to the front windshield of the vehicle at the exit of the air conditioning case according to the opening degree of the temporal door 113. A vent discharge port 115 for discharging air to the upper half of the vehicle interior and a floor discharge port 116 for discharging air to the lower half of the vehicle interior are installed, and the vents 114, 115, and 116 are respectively discharged. Mode doors 117, 118, and 119 for selectively controlling the amount of air discharged through the air are provided.

Here, the blower 200, as shown in Figs. 1 and 2, the inlet 201 connected to the flow passage of the bet of the vehicle, the outside air inlet 202 connected to the flow passage of the outside air of the vehicle, Intake duct 210 having an intake door 203 that selectively opens and closes the air inlet 201 and the air inlet 202 while rotating between the air inlet 201 and the air inlet 202. )Wow; A scroll case 211 for introducing air sucked through the intake duct 210; A blowing fan 212 installed inside the scroll case 211 for blowing air introduced into the scroll case 211 to the air conditioning case 100 and an electric motor 213 for driving the blowing fan. Consists of.

Here, the intake door 203 has a flat plate-like structure, and upper and lower ends of the intake door 203 are inserted into shaft holes respectively formed on both side surfaces of the intake duct 210 to protrude outside the shaft hole. . The rotation shaft 203a is configured to rotate in conjunction with an operation of a blow mode selection switch (not shown) of an air-conditioning controller installed on an instrument panel located in front of a vehicle interior. To this end, a link arm 220 is connected to one end of the rotation shaft 203a, and the other end of the link arm 220 is connected to the intake duct 210 by pins 221. The outer wall is connected to a lever 222 rotatably installed around a hinge axis 222a. The lower end of the lever 222, the drive means of a cable (not shown) or an actuator (not shown) is connected to rotate the lever 222 about the hinge axis (222a).

On the other hand, Figure 3 shows a part of the blower for a vehicle air conditioner according to another conventional example.

In the blower 300 illustrated in FIG. 3, an outside air inlet 301 and a first inside air inlet 302 are formed at both sides of the intake duct 310, and a second inside air inlet 301 is provided below the outside air inlet 301. 303 is formed, and the first and second intake doors 304 and 305 are provided in the intake duct 310 to adjust the opening degree of the inlets 301, 302, and 303. It is.

The first and second intake doors 304 and 305 have a flat structure, and as shown in FIG. 2, each of the rotating shafts 304a and 305a provided in a hinged manner to the outside of the intake duct 310, respectively. By connecting a link arm (not shown) and a lever (not shown), the inlets 301, 302 and 303 are selectively opened and closed to perform a bet mode or an outside air mode.

In addition, the blower 300, when in the betting mode, when the first intake door 304 and the second intake door 305 intersect each other to close the outside air inlet 301, to the intersection portion thereof A sealing rod 306 is provided at a position in contact with each free end of the first and second intake doors 304 and 305 to seal inflow of outside air.

However, according to the conventional configuration, since the first and second intake doors 304 and 305 have a weak supporting force, for example, when driving at a high speed in the bet mode to improve cooling performance in summer, According to the driving speed of the vehicle, it is pushed by a strong pressure (wind pressure) of the outside air introduced through the cowl panel (Cowl Panel, not shown) of the vehicle, and a part of the outside air inlet 301 is opened, thereby partially opening There is a problem in that the outside air flows through the outside air inlet 301, resulting in a decrease in cooling performance.

In particular, since two cables (not shown) are used to drive the pair of intake doors 304 and 305, when a length tolerance occurs in the manufacture of each of the cables, in the bet mode or the outside mode, Since the rotating end of one of the intake doors does not come into proper contact with the sealing rod 306, air leakage occurs and there is a problem of lowering the blowing efficiency. In addition, when the cable is forcibly operated, there is a problem in that the operation feeling is poor, for example, the cable may be bent due to the excessive operation force.

Accordingly, the present invention has been made to solve the problems of the prior art, by allowing a pair of intake door to be driven simultaneously by a pair of gear lever and a cable, thereby transmitting the same driving force to the pair of intake doors In addition, it is an object of the present invention to provide an intake door driving apparatus of an automotive air conditioning apparatus that can improve the operating force, and also strengthen the supporting force of the doors, thereby preventing the inflow of air by the vehicle speed.

In order to achieve the above object,                     

A pair of intake doors for selectively opening and closing the inside and outside air inlets formed in the air conditioning case;

First and second link arms coupled to respective rotation shafts of the pair of intake doors;

A first hinge part formed at a center thereof, a first connection part extending from one side of the first hinge part to the first link arm side and slidably coupled to the first link arm, and opposite to the connection part from the other side of the first hinge part A drive lever comprising a first gear portion formed in a direction;

A second hinge portion formed at a center thereof, a second connection portion extending from one side of the second hinge portion to the second link arm and slidably coupled to the second link arm, and the second connection portion from the other side of the second hinge portion A driven lever formed in a direction opposite to the second gear part engaged with the first gear part;

A cable connected between the drive lever and the vehicle interior;

Including,
Each of the first hinge portion and the second hinge portion includes a circular rim portion, a plurality of elastic pieces segmented inwardly at predetermined intervals along the inner circumferential surface of the rim portion, and a space surrounded by the plurality of elastic pieces. Including a formed hinge hole,

One end of the cable may be connected to a cable connection part integrally protruded from the first hinge part in one direction between the first connection part and the first gear part of the driving lever.

In the present invention, a plurality of reinforcing ribs are formed on each surface of the first gear portion and the second gear portion.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

4 is an overall perspective view of a vehicle air conditioner to which an intake door driving apparatus according to the present invention is applied, and FIG. 5 is a perspective view of a vehicle air conditioner showing a state viewed from the direction 'A' in FIG. 4, and FIG. Fig. 7 is a block diagram of an intake door applied to the intake door driving device according to the present invention.

As shown in FIG. 4, the vehicle air conditioner to which the intake door driving apparatus according to the present invention is applied includes a blower 20 at an inlet end of the air conditioner case 10, and at the outlet end of the blower 20. Defrost discharge port 11 formed on both sides to discharge the air introduced into the air conditioning case 10 toward the windshield of the vehicle, vent vent port 12 formed on the upper surface to discharge air to the upper half of the vehicle interior and air It is a structure including the floor discharge port 13 formed on both sides of the lower in order to discharge the to the lower half of the vehicle interior. In addition, although not shown in the drawing, the air conditioner 10 has a heat exchanger for heat-exchanging air introduced by a blower, a temp door for controlling the temperature of the air heat-exchanged by the heat exchanger, as in the prior art. Mode doors for selectively opening and closing each discharge port 11, 12, 13 are provided.

As illustrated in FIGS. 5 and 7, the blower 20 includes an outside air inlet 21 for introducing outside air and first and second inside air inlets 22, 23 for introducing the inside air; An intake duct 26 having first and second intake doors 24 and 25 pivoting to selectively open and close the outside air inlet 21 and the first and second internal air inlets 22 and 23; The intake duct 26 has a structure including a scroll case 27 installed inside the intake duct 26 and including a blower fan (not shown) and an electric motor (not shown) for driving the blower fan.

Here, the scroll case is provided in the center portion of the upper side of the intake duct 26, the outside air inlet 21 is formed on both sides of the scroll case, the first and second bet Inlets 22 and 23 are formed on both sides of the lower part of the intake duct 26, respectively. The first and second internal air inlets 22 and 23 are formed in a substantially 1/4 spherical structure, as can be seen from FIGS. 4 and 7. In addition, the first and second air inlets 22 and 23 block foreign matters such as leaves introduced through the first and second air inlets 22 and 23 in the betting mode, and thus foreign matters inside the blower fan. A plurality of ribs (Rib, 28) are formed to reduce the noise caused by the inflow.

The first and second intake doors 24 and 25 for selectively opening and closing the outside air inlet 21 and the first and second internal air inlets 22 and 23 formed in such a structure are approximately 1/4 spherical. In the same structure of the top, the rotating shafts 24a and 25a are protruded at both end portions thereof so as to be rotatable by a door driving device as described later. 6, only the 1st intake door 24 is shown for simplicity of drawing.

Meanwhile, as illustrated in FIG. 7, the door driving device includes first and second link arms 30 coupled to respective rotation shafts 24a and 25a of the pair of intake doors 24 and 25. 31, the drive lever 40 and the driven lever 41 connected to the first and second link arms 30 and 31, respectively, engaged with each other, and the drive lever 40 connected to the drive. The cable 50 which drives the lever 40 is comprised.

The first and second link arms 30 and 31 have slits 30a and 31a having predetermined lengths at their respective ends, and the driving described later on the respective slits 30a and 31a. By connecting the first connecting portion 40b of the lever 40 and the second connecting portion 41b of the driven lever 41 by pins, the first connecting portion 40b and the second connecting portion 41b are connected to the slit ( Sliding movement is carried out in 30a) 31a. The first and second link arms 30 and 31 are provided with holes for forcibly receiving and fixing the rotary shafts 24a and 25a at their other ends. An intermediate portion of the first and second link arms 30 and 31, that is, a portion between the portion where the slits 30a and 31a are formed and the portion where the hole is formed, is predetermined as shown in FIG. 4. Inclined at an angle.

The driving lever 40 extends from one side of the first hinge portion 40a and the first hinge portion 40a toward the first link arm 30 to be formed at the first link arm 30. A first connecting portion 40b slidably connected to the slit 30a of 30 and a fan-shaped first gear extending in a direction opposite to the first connecting portion 40b from the other side of the first hinge portion 40a. It is comprised by the part 40c.

Like the drive lever 40, the driven lever 41 has a second hinge portion 41a formed at the center and the second link arm 31 from one side of the first hinge portion 41a. A second connection portion 41b extending to the side and slidably connected to the slit 31a of the second link arm 31, and the second connection portion 41b from the other side of the second hinge portion 41a. It consists of the fan-shaped 2nd gear part 41c extended in the opposite direction.

The driven lever 41 is always engaged with the first gear portion 40c of the drive lever 40 so that the end of the second gear portion 41c is interlocked with the driving force received from the drive lever 40. The first and second gear parts 40c, 41c are provided with a plurality of reinforcing ribs 40c-1 and 41c-1 to reinforce their own rigidity. have.

Further, the hinge portions 40a and 41a are predetermined along the inner circumferential surface of the substantially circular rims Rim 40a-1 and 41a-1 and the rim portions 40a-1 and 41a-1. A structure including a plurality of elastic pieces 40a-2 and 41a-2 segmented inwardly at intervals and a hinge hole formed by a space surrounded by the plurality of elastic pieces 40a-2 and 41a-2. It is. The plurality of elastic pieces 40a-2 and 41a-2 include protrusions 40a-3 protruding inwardly from the inner circumferential surfaces of the rims 40a-1, 41a-1 by a predetermined length, and the protrusions ( It consists of the arc-shaped part 40a-4 curve-shaped in arc shape from each end of 40a-3). The hinge holes of the hinge parts 40a and 41a thus formed are elastically fitted to the hinge shafts 60a and 60b formed on the outer wall surface of the blower 20.

It is preferable that the drive lever 40 and the driven lever 41 having such a structure connect the cable 50 only to the drive lever 40 so as to be interlocked by one cable 50. To this end, the driving lever 40 is integrally protruded from the hinge portion 40a between the first connecting portion 40b and the first gear portion 40c, and has a through hole 40d-1 at the end thereof. The cable connection part 40d which has is provided. As a result, one end of the cable 50 is inserted and connected to the through hole of the cable connection part 40d, and the other end thereof is connected to a blowing mode selection switch installed in the vehicle interior.

Referring to the operation of the present invention configured as described above are as follows.

When the driver or the passenger selects the betting mode by operating a blowing mode change switch of the air conditioning controller installed on the instrument panel in the vehicle interior, the cable 50 connected to the cable connection part 40d of the drive lever 40 is moved by the movement of the cable 50. The driving lever 40 is rotated about the hinge portion 40a in the state shown in FIG. 8 in the state shown in FIG. 6, and the first connection portion 40b extending on one side of the hinge portion 40a is formed. It starts to rotate counterclockwise along the slit 30a of the first link arm 30. At this time, the second gear portion 41c of the driven lever 41 engaged with the first gear portion 40c of the drive lever 40 is driven by the drive lever 40 as the drive lever 40 rotates. Are rotated together in the opposite direction of action. That is, the driven lever 41 is rotated about the hinge portion 41a, and the second connection portion 41b extending on one side of the hinge portion 41a includes a slit 31a of the second link arm 31. Rotate clockwise along. Accordingly, the first intake door 24 and the second intake door 25 which are axially coupled to the first link arm 30 and the second link arm 31 are rotated to a position to close the outside air inlet 21. As the outside air inlet 21 is completely closed, only the pure bet is introduced into the vehicle interior through the first and second internal air inlets 22 and 23.

In this way, the first and second intake doors 24 and 25 are engaged with the engagement between the first gear portion 40c of the drive lever 40 and the second gear portion 41c of the driven lever 41. As a result, it is possible to secure stable bearing capacity, and thus, when driving at high speed, even when the pressure of the outside air introduced through the cowl panel, that is, the wind pressure, can be maintained without closing, the air inlet can be kept closed. Can improve.

On the contrary, when switching from the bet mode to the outside air mode by the blowing mode switch, the driving device is operated in the opposite manner to the above-described operation while opening the outside air inlet 21 and at the same time as the first and second air inlet ports ( 22) (23) will be closed. (See Figure 6)

As described above, the present invention is connected to the pair of gear levers 40 and 41 by the respective link arms 30 and 31 to the ends of the rotation shafts 24a and 25a of the pair of intake doors 24 and 25. One cable 50 to only one of the pair of geared levers 40 and 41 so as to be axially coupled and to drive the pair of intake doors 24 and 25 simultaneously by one cable. By adopting a structure that interlocks with each other, not only the operation structure of the driving device is simpler, but also the pair of intake doors can be easily opened and closed with a small force, so that the same driving force can be transmitted to the door without bending the cable. Together, the operation force can be improved remarkably.

In addition, since the bearing force of the intake doors 24 and 25 can be strengthened by the pair of gear-type levers 40 and 41, and a stable sealing effect can be improved. The inflow of outside air can be prevented reliably.

As described above, according to the intake door driving apparatus according to the present invention, the same driving force can be transmitted to a pair of intake doors by allowing a pair of intake doors to be driven simultaneously by a pair of gear levers and a cable. In addition, it is possible to improve the operation force, and also to strengthen the bearing capacity for the doors to prevent the air inflow due to the high-speed driving in the betting mode to maximize the air conditioning performance.

Although the present invention has been described with respect to the preferred embodiment, the present invention is not limited thereto, and various modifications and applications will be possible to those skilled in the art without departing from the gist of the present invention.

Claims (3)

A pair of intake doors 24 and 25 for selectively opening and closing the outside air inlet 21 and the inside air inlet 22, 23 formed in the air conditioning case 10; First and second link arms 30 and 31 coupled to respective rotation shafts 24a and 25a of the pair of intake doors 24 and 25; A first hinge portion 40a formed at a center thereof and extending from one side of the first hinge portion 40a toward the first link arm 30 to be slidably coupled to the first link arm 30 A driving lever 40 including a first connecting portion 40b and a first gear portion 40c formed in a direction opposite to the connecting portion 40b from the other side of the first hinge portion 40a; A second connecting portion 41a formed at the center and a second connecting portion extending from one side of the second hinge portion 41a toward the second link arm 31 and slidably coupled to the second link arm 31. A driven lever (41b) comprising a second gear portion (41c) formed in the opposite direction to the second connecting portion (41b) from the other side of the second hinge portion (41a) and engaged with the first gear portion (40c). 41); A cable (Cable) 50 connected between the driving lever 40 and the vehicle interior; Including, Each of the first hinge portion 40a and the second hinge portion 41a includes a circular rim portion Rim 40a-1 41a-1 and a portion of the rim portion 40a-1 41a-1. Formed by a space surrounded by a plurality of elastic pieces 40a-2 and 41a-2 segmented inwardly at predetermined intervals along the inner circumferential surface and the plurality of elastic pieces 40a-2 and 41a-2. Includes a hinge hole, One end of the cable 50 may be integrally protruded from the first hinge portion 40a in one direction between the first connecting portion 40b and the first gear portion 40c of the driving lever 40 ( 40d), the intake door driving apparatus of the automotive air conditioning apparatus. delete The method of claim 1, Each of the surfaces of the first gear portion 40c and the second gear portion 41c has a plurality of reinforcing ribs 40c-1 and 41c-1 formed therein. Drive system.

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