KR20110027413A - Air conditioner - Google Patents

Abstract

PURPOSE: An air conditioner is provided to minimize the concentration of stress by dispersing torque through a plurality of key parts of a vein connecting unit in case of the drive of a vein motor. CONSTITUTION: An air conditioner includes a discharging body, a vein(85), a vein motor(86), a vein connecting unit(150). The discharging body includes an air discharging path. The vein is placed at the left and right longitudinal directions of the air discharging path. A combining recess(142) is formed at one side of the vein. The vein motor is installed at the discharging body and includes a horizontal rotary shaft. The vein connecting unit is installed at the horizontal rotary shaft and is in connection with the vein.

Description

Air Conditioner

The present invention relates to an air conditioner, and more particularly, to an air conditioner having a vane that opens and closes an air discharge passage.

In general, an air conditioner is installed to create a more comfortable indoor environment for a human being by installing a heater or air conditioner to cool or heat the room, or to purify the air. A heat exchanger for converting the air sucked by the blower into cold air or warmth through heat exchange with the refrigerant is embedded.

Conventionally, a vane is disposed in an air discharge passage for discharging air inside an air conditioner, and a vane motor is connected to the vane to open and close the air discharge passage by driving the vane motor.

The vane motor has a rotating shaft protruding, the vane is formed with a coupling groove connected to the rotating shaft, the rotation shaft of the vane motor is inserted into the coupling groove.

However, in the conventional air conditioner configured as described above, the rotating shaft of the vane motor is made of a metal body, and the service of the vane or the vane motor is not easy when the rotating shaft and the coupling groove are combined with an adhesive material.

On the other hand, when a separate vane connecting member is installed between the rotating shaft and the coupling groove, the rotational force is transmitted through the vane connecting member. When the rotational force of the vane connecting member is concentrated to a point of the vane, the stress is concentrated at the portion where the rotational force is concentrated. There is a problem that the vanes are broken.

The present invention has been made to solve the above problems of the prior art, and an object of the present invention is to provide an air conditioner that prevents breakage of vanes by preventing stress from being concentrated on specific portions of vanes.

According to an aspect of the present invention, there is provided an air conditioner including: a discharge body having an air discharge passage opening; Vanes which are long left and right in the air discharge passage and have defect grooves formed on one side thereof; A vane motor installed on the discharge body and protruding from the horizontal rotating shaft, and a connecting part installed on the horizontal rotating shaft and inserted into and coupled to the coupling groove, the vane connecting member connected to the vane; And a plurality of key portions projecting apart from the periphery of the core.

The core is protruded from a round part formed between the plurality of key parts and rounded.

The core has a circular shape, and the key portion protrudes at equal intervals in the circumferential direction on the outer circumference of the core.

The key portion is formed at 90 ° intervals about the core.

 The vane connecting member further includes a plate body portion having the coupling portion protruding from one surface thereof, and a rotation shaft connection portion protruding from the other surface of the plate body portion and into which the horizontal rotation shaft is inserted.

The reinforcing ribs protrude in a ring shape along an edge of one surface of the plate portion in which the coupling portion protrudes.

In addition, the air conditioner according to the present invention, the air inlet is formed in the center of the front, the lower air inlet is formed on the lower side of the air inlet, the upper air discharge port formed above the air inlet; A heat exchanger installed behind the air inlet; A blower installed at a rear side of the heat exchanger to blow air into an upper air outlet and a lower air outlet; An upper discharge unit installed between the upper air discharge port and the blower to adjust a wind direction of the air discharged through the upper air discharge port and to open and close the upper air discharge port and the blower; A lower discharge unit installed between the lower air discharge port and the blower to adjust a wind direction of air discharged through the lower air discharge port, and open and close between the lower air discharge port and the blower, wherein the lower discharge unit includes: An opening body formed with an opening; Vanes which are long left and right in the air discharge passage and have defect grooves formed on one side thereof; A vane motor installed on the discharge body and protruding from the horizontal rotating shaft, and a coupling part installed on the horizontal rotating shaft and inserted into and coupled to the coupling groove, the vane connecting member connected to the vane; And a plurality of key portions projecting apart from the periphery of the core.

 The core protrudes from the round part which is located between the plurality of key parts and is rounded.

The core has a circular shape, and the key portion protrudes at equal intervals in the circumferential direction on the outer circumference of the core.

 The vane connecting member further includes a plate body portion having the coupling portion protruding from one surface thereof, and a rotation shaft connection portion protruding from the other surface of the plate body portion and into which the horizontal rotation shaft is inserted.

When the air conditioner according to the present invention is configured as described above, when the vane motor is driven, the rotational force is distributed and transmitted through a plurality of key portions of the vane connecting member, thereby minimizing stress concentration at a specific site and minimizing damage to the vane connecting member or vane. There is an advantage that can stably rotate the vanes.

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

1 is a perspective view of one embodiment of an indoor unit of an air conditioner according to the present invention, FIG. 2 is a cross-sectional view of an indoor unit of an embodiment of an air conditioner according to the present invention, and FIG. 3 is an indoor unit of an air conditioner according to the present invention. An exploded perspective view of one embodiment.

In the air conditioner according to the present embodiment, as shown in FIGS. 1 to 3, an air inlet 4 for sucking indoor air is formed in the main body 2 that forms an exterior, and the inside of the main body 2 is provided. Air discharge ports 6 and 8 through which air conditioned air is discharged are formed.

The air conditioner according to the present embodiment is a kind of console-type air conditioner that can be installed on a floor of a room, a part of which is embedded in a wall, or can be installed on a wall, and includes an air inlet 4 and an air outlet 6 (8) is formed at the front of the main body (2), the air inlet (4) and the air discharge port (6) (8) is the main body (2) for the case that the main body (2) is installed on the floor of the room Is formed in addition to the lower surface.

The main body 2 has an air inlet 4 formed on its front surface, and air outlets 6 and 8 formed on the upper and lower sides of the air inlet 4, respectively.

The air conditioner according to the present embodiment is an indoor unit of a cooling / heating air conditioner in which cooling operation and heating operation can be selectively performed, and the main body 2 to discharge warmth to the lower part of the main body 2 during heating operation. The lower air discharge port 6 is formed at the lower portion of the front surface of the upper surface, and the upper air discharge port 8 is formed at the upper portion of the main body 2 to discharge the cool air to the upper portion of the main body 2 during the cooling operation. An air intake port 4 is formed at a height between the 6 and the upper air discharge port 8.

The main body 2 may have an upper air discharge port 8 formed on an upper surface of the front surface of the main body 2, may be formed on an upper surface of the front portion of the main body 2, and may have an upper front surface and an upper surface of the main body 2. It is also possible to be formed in the inclined portion or round therebetween, hereinafter, the inclined portion is formed between the upper front surface and the upper surface of the main body 2 so that the cold air is discharged toward the upper portion of the room during the cooling operation, the upper air discharge port 8 is It demonstrates that it was formed in the inclined part.

The main body 2 is disposed in front of the rear case 10 and the rear case 10, and is formed with the air inlet 4, the lower air outlet 6, and the upper air outlet 8, and is located between the rear case 10. A front case 30 having a space therein and a front cover 50 disposed in the front case 30 so as to cover the air inlet 4 are included.

The main body 2 has a blower 60 which sucks indoor air through the air inlet 4 and passes the inside of the main body 2 and discharges it through the lower air outlet 6 and the upper air outlet 8, and an air inlet. (6) flows to the heat exchanger (70) and the lower air discharge port (6) installed at the rear and acting as an evaporator and a condenser while cooling or heating the air sucked into the air inlet (4) by the blower (60). A lower discharge unit 80 for guiding air, an upper discharge unit 90 for guiding air flowing into the upper air discharge port 8, and a control unit 120 for controlling an air conditioner are provided.

The rear case 10 forms a rear appearance of the indoor unit of the air conditioner and forms an air flow path. The rear case 10 is formed in a box shape with an open front surface, and forms a flow path forming part 11 ( 12) (13) (14) are formed.

As shown in FIGS. 2 and 3, the flow path forming parts 11, 12, 13, and 14 have a left flow path forming part 11, a right flow path forming part 12, and a lower flow path forming part 13. ) And an upper flow path forming portion 14.

The flow path forming parts 11, 12, 13, and 14 surround a part of the outer circumference of the fan 63 to be described later on a surface of the left flow path forming part 11 facing the right flow path forming part 12 and have an extended angle. The left scroll part 15 protrudes, and the right scroll part 16 which surrounds a part of the outer periphery of the fan 63 mentioned later on the surface facing the left flow path forming part 11 of the right flow path forming part 12 and has an extended angle. ) Is formed to protrude.

The flow path forming parts 11, 12, 13, and 14 have the right scroll part 16 having the right flow path forming part when the left scroll part 15 is formed at the lower part of the upper and lower sides of the left flow path forming part 11. When the left scroll part 15 is formed on the upper part of the upper and lower parts of the upper and lower parts of the 12, and the left scroll part 15 is formed on the upper part of the upper and lower parts of the left flow path forming part 11, the right scroll part 16 is formed on the right flow path forming part 12. It is formed at the bottom of the upper and lower, the left scroll 15 and the right scroll 16 is formed symmetrically in the diagonal direction.

The flow path forming portions 11, 12, 13, 14 are disposed between one of the left flow path forming portions 11 and the right flow passage forming portion 12 between one side wall of the rear case 10. It has the electric room space C in which the control unit 120 is installed.

As shown in FIG. 2, the flow path forming portions 11, 12, 13, 14 are rounded so that the lower flow path forming portion 13 guides the air blown downwardly from the blower 60 in the forward direction. It is formed in a shape, the upper flow path forming portion 14 is formed in a round shape to guide the air blown downward from the blower 60 in the substantially forward upper direction.

As shown in FIG. 3, the rear case 10 includes a fastening hole 20 for mounting the blower 60 to the rear plate, and the fastening member 65 of the blower 60 includes the rear case 10. Is fastened to the fastening hole (20).

The front case 30 forms a front appearance of the indoor unit of the air conditioner, and is formed in a box shape having a rear surface and a bottom surface open and installed in front of the rear case 10 to cover the front surface of the rear case 10. do.

The front case 30 has an air inlet 4 formed on the front surface thereof, and the air outlets 6 and 8 are formed on at least one side of the upper and lower sides of the air inlet 4. Each of the discharge ports 6 and 8 is formed to have a shorter left and right width than the left and right widths of the main body 2.

The front case 30 has a grille 4 ′ formed at the air inlet 4.

The front case 30 forms air intake passages P1 and P2 between the front cover 50 and the air intake guides 37 and 38 for guiding air intake are provided with the front cover 50. It is formed to be spaced apart.

 The front case 30 covers the display assembly 130 at a position opposite to the display assembly 130 to be described later, and displays a window 45 displaying information of the indoor unit of the air conditioner by the light emitted from the display assembly 130. Is installed.

 The window 45 has an input unit for inputting various commands of the indoor unit of the air conditioner through the display assembly 130, and a display window on which information of the display assembly 130 is displayed.

The front cover 50 is disposed with the left and right suction grille 39, 40 between the front case 30.

The blower 60 is a centrifugal fan that sucks air in front of it and blows it in the circumferential direction, and is installed to be located behind the heat exchanger 70.

As shown in FIGS. 2 and 3, the blower 60 includes a fan motor 61, a motor mounter 62 that fixes the fan motor 61 to the rear case 10, and a fan motor 61. And a fan 63 installed on the rotating shaft, and an orifice 64 for guiding air sucked into the fan 63 when the fan 63 rotates.

The motor mounter 62 is formed with a through hole through which the fastening member 65 passes, and the fastening member 65 is fastened through the through hole of the motor mounter 62 and the fastening hole 20 of the rear case 10.

The fan 63 is composed of a turbo fan positioned between the left, right, upper, and lower flow path forming parts 11, 12, 13, and 14.

  The heat exchanger 70 is provided to be located behind the air intake 4, in particular, between the air intake 4 and the orifice 64 so that the air sucked into the air intake 4 is heat exchanged.

The lower discharge unit 80 is installed between the lower air discharge port 6 and the blower 60 to adjust the wind direction of the air discharged through the lower air discharge port 6 and the lower air discharge port 6 and the blower 60. In order to open and close the space | interval, the discharge body 81, the some left-right wind direction control vane 82, the link 83, the vane 85, and the vane motor 86 are included.

The discharge body 81 has an air discharge passage 81 ′ through which air guided to the lower flow path forming portion 13 passes, and is installed to be located behind the lower air discharge port 6.

The plurality of left and right wind direction control vanes 82 are disposed to rotate in the air discharge passage of the discharge body 81.

The link 83 integrally links the plurality of left and right wind direction adjusting vanes 82 and is connected to each of the plurality of left and right wind direction control vanes 82.

The link 83 is formed with a protrusion 84 to adjust the placement angle of the plurality of left and right wind direction adjusting vanes 82.

The vane 85 functions as a damper for opening and closing the air discharge passage 81 ′, and is a damper combined wind direction adjusting member for adjusting the up and down wind direction of the air discharged to the lower air discharge port 6. It is arranged to rotate about the center.

The vane motor 86 rotates the vane 86 up and down, and is installed at one side of the left and right sides of the discharge body 81.

The lower discharge unit 80 has a drain pan portion 87 formed above the discharge body 81 to receive and drain the condensed water dropped from the heat exchanger 70.

The upper discharge unit 90 is installed between the upper air discharge port 8 and the blower 60 to adjust the wind direction of the air discharged through the upper air discharge port 8 and the upper air discharge port 8 and the blower 60. It opens and closes, and includes a discharge body 91, a plurality of left and right wind direction control vanes 92, a link 93, a vane 95, a vane motor 96, and a safety net 97. .

The discharge body 91 has an air discharge passage 91 'through which air guided to the upper flow path forming portion 14 passes, and the air discharge passage 91' is provided in communication with the upper air discharge port 8.

 The plurality of left and right wind direction control vanes 92 are disposed to rotate in the air discharge passage of the discharge body 91.

The link 93 integrally links the plurality of left and right wind direction control vanes 92 and is connected to each of the plurality of left and right wind direction control vanes 92.

The link 93 is provided with a handle 94 for adjusting the angle of placement of the plurality of left and right wind direction control vanes 92 protruding.

The vane 95 functions as a damper for opening and closing the air discharge passage 91 ′, and adjusts the up and down wind direction of the air discharged to the upper air discharge port 8. The vane 95 is disposed to be long to the left and to rotate about the horizontal axis. do.

The vane motor 96 rotates the vane 96 up and down, and is installed at one side of the left and right sides of the discharge body 91.

The stabilizer net 97 protects the inside and the bottom of the upper discharge unit 90, and is installed to be located in the discharge body 91, in particular, the air discharge passage 91 '.

The control unit 120 controls the indoor unit of the air conditioner according to the operation of the remote control or the operation / stop input through the window 45, and various commands of the indoor unit of the air conditioner are input and the indoor unit of the air conditioner is input. The display assembly 130 displaying information such as cooling / heating operation or clean operation is installed.

The control unit 120 is located in the electric compartment C formed in the rear case 10, and is installed on the rear case 10 by a fastening member such as a screw.

The control unit 120 operates the fan motor 61, the vane motor 86 of the lower discharge port unit 80, the vane motor 96 of the upper discharge port unit 90, and the like by operating a remote controller or switching a window. The display assembly 130 is controlled.

The display assembly 130 is installed to be located above the front of the control unit 120 to be installed in a position close to the window 45.

In the air conditioner according to the present embodiment, the vanes 85 and 95 and the vane motors 86 and 96 of the lower discharge unit 80 and the upper discharge unit 90 may be connected in the same structure, and the lower discharge unit For example, 80 is described in detail.

4 is a rear view of the lower discharge unit shown in FIGS. 2 and 3, FIG. 5 is a perspective view of the vane and vane connecting member shown in FIG. 4, and FIG. 6 is a view of the vane connecting member shown in FIG. 5. An enlarged perspective view.

The vane 85 is positioned to the left and right in the air discharge passage 81 ′, and the coupling groove 140 is formed at one side of the air discharge passage 81 ′.

The vane 85 is formed such that the rotating shaft 142 having the coupling groove 140 formed on one side of the left and right adjacent to the vane motor 86 protrudes laterally, and the discharge body 81 on the opposite side of the rotating shaft 142. The support shaft 144 rotatably supported by the formed rotation hole (not shown) is formed to protrude sideways.

The vane 85 is formed in a shape corresponding to the coupling portion 152 of the vane connection member 150, the shape of the coupling groove 142 will be described later, the coupling groove 142 is formed when the coupling portion 152 is rotated The rotational force is transmitted through the rotation shaft 144.

The vane motor 86 is installed on one side of the left and right sides of the discharge body 81 and installed to protrude a horizontal rotation shaft 86 ′.

The vane motor 86 is provided with a vane connecting member 160 for connecting the vane 85 and the horizontal rotation shaft 86 'of the vane motor 86.

The vane connection member 150 is installed on the horizontal rotation shaft 86 'and is formed with a coupling portion 152 inserted into and coupled to the coupling groove 142 so that the horizontal rotation shaft 86' and the vane 85 are integrally rotated. Connect.

Here, the vane connection member 150 is a link that is a kind of power transmission member that allows the rotational force of the horizontal rotating shaft 86 'to be transmitted through the key portion 156, which will be described later, and the coupling portion 152 on the surface facing the vane 85. Is formed to protrude.

Coupling portion 152 includes a core 154 and a plurality of key portions 156 projecting spaced apart around the core 154.

The core 154 is a portion where the extension lines of the plurality of key portions 156 meet and a center of a type of coupling portion where the plurality of key portions protrude, and the core 154 so as to be strengthened more simply than the coupling portion 152 is formed in a cross shape. It is preferable to form thicker than the thickness of).

The core 154 protrudes from the round part 158 positioned between the plurality of key parts 156 and rounded.

Coupling portion 152 is a rotational force is distributed in proportion to the area of the plurality of key portion 156, the stress concentration of a particular portion can be solved, in particular, the longer the length of the plurality of key portion 156 may be distributed evenly, When the length is increased, the possibility of breakage of the plurality of key portions 156 increases, so that the round portion 158 protrudes as a kind of connecting portion connecting the plurality of key portions 156 to each other.

The round part 158 also functions to partially transfer the rotational force, and the same number as the plurality of key parts 156 is formed.

The round part 158 is formed to be rounded as a whole, and the part contacting the key part 156 is also rounded to minimize stress concentration generated in the angled parts.

The plurality of keys 156 are parts for substantially transmitting the rotational force transmitted from the vane motor 86 to the vanes 85, and as the number thereof increases, the rotational force can be evenly distributed, and the center of the core 154 is 90. Most preferably formed at intervals.

When the plurality of key portions 156 are formed at equal intervals, the rotational force is not concentrated on a specific key portion, and the rotational force is evenly distributed to the plurality of key portions 156. When the number is too large, the thickness and strength of each of the plurality of key portions 156 are approximately equal. Since the possibility of breakage increases and manufacturing is not easy, it is most preferable that the four key portions 156 are spaced apart at 90 ° intervals.

  The vane connection member 150 further includes a plate body portion 160 having a coupling portion 152 protruding from one surface thereof, and a rotation shaft connection portion 164 protruding from the other surface of the plate body portion 160 and inserted with a horizontal rotating shaft 86 ′. Include.

The vane connection member 150 has the coupling portion 160 therebetween, and the coupling portion 152 and the rotation shaft coupling portion 164 protrude in opposite directions.

The plate portion protrudes in a ring shape along the reinforcing rib 166 along an edge of one surface on which the coupling portion 152 protrudes.

The vane 85 is formed in a shape in which the coupling groove 142 corresponds to the coupling portion 152. The vane 85 communicates with the circular groove 146 so that the central core groove 146 and the plurality of clip portions 156 are inserted therein. It includes a plurality of key groove 147 and a plurality of round groove 148 formed in communication with the circular groove 146 so that the plurality of round portion 158 is inserted.

 Hereinafter, the operation of the present invention configured as described above is as follows.

First, when a user inputs a cooling operation through a remote controller (not shown) or the window 45, the control unit 120 drives the vane motor 86 of the lower discharge port unit 80 in a sealed mode, and the upper discharge port unit The vane motor 96 of 90 is driven in the upward discharge mode, and the fan motor 61 is driven.

When the vane motor 86 of the lower outlet unit 80 is driven in a closed mode, the vane motor 86 rotates the vane connecting member 150, and the vane connecting member 150 rotates with a plurality of key parts 156. The plurality of key parts 156 and the round part 158 are rotated to rotate the rotation shaft 144 of the vane 85 while being in contact with the coupling groove 142 of the vane 85.

When the rotation shaft 144 is rotated as described above, the rotational force is evenly transmitted to the plurality of key grooves 147 and the plurality of round grooves 148 of the coupling grooves 142 of the vanes 85, and a specific one of the rotation shafts 144. The stress concentration of the portion is minimized, and breakage of the rotation shaft 144 is prevented.

On the other hand, the vanes 83 of the lower discharge port unit 80 are rotated in a direction orthogonal to the air discharge passage 81 ′ formed in the discharge body 81 of the lower discharge port unit 80, thereby discharging the discharge body 81. Prevent.

When the vane motor 96 of the upper discharge port unit 90 is driven in the upper discharge mode, the vane motor 96 rotates the vane 93 of the upper discharge port unit 90 so as to be inclined upwardly, and the upper air discharge port 8 Is open.

When the fan motor 61 is driven, air in front of the main body 2 is sucked into the air inlet 4, heat exchanged in the heat exchanger 70, and then sucked into the blower 60. Since the air sucked into the blower 60 is sealed in the air discharge passage 81 ′ of the lower discharge port unit 80, all of them flow into the air discharge passage 91 ′ of the upper discharge port unit 90, and the upper portion It passes through the air discharge passage 91 ′ of the discharge port unit 90 and the upper air discharge port 8, and is discharged toward the front upper part of the room while being guided by the vanes 93 of the upper discharge port unit 90.

On the other hand, when the user inputs the heating operation through the remote control (not shown) or the window 45, the control unit 120 drives the vane motor 86 of the lower discharge port unit 80 in the open mode, the upper discharge port The vane motor 96 of the unit 90 is driven in a closed mode, and the fan motor 61 is driven.

The control unit 120 drives the vane motor 86 of the lower discharge port unit 80 and the vane motor 96 of the upper discharge port unit 90 as opposed to the cooling operation, and the vanes 85 of the lower discharge port unit 80. ) Rotates in a direction parallel to the air discharge passage 81 ′ of the discharge body 81 to open the air discharge passage 81 ′, and the vanes 95 of the upper discharge port unit 90 are connected to the discharge body 91. It rotates in parallel with the air discharge passage 91 'and closes the air discharge passage 91'.

When the fan motor 61 is driven, air in front of the main body 2 is sucked into the air inlet 4, heat exchanged in the heat exchanger 70, and then sucked into the blower 60. Since the air sucked into the blower 60 is sealed in the air discharge passage 91 'of the upper discharge port unit 90, all of them flow into the air discharge passage 81' of the lower discharge port unit 80, It passes through the air discharge passage 81 'and the lower air discharge port 6 of the discharge port unit 80 and is discharged toward the front of the room.

7 is an enlarged cross-sectional view of the vane and the vane connecting member of another embodiment of the air conditioner according to the present invention.

In the air conditioner according to the present embodiment, the core 154 ′ of the coupling portion 152 ′ has a circular shape, and the plurality of key portions 156 ′ protrude from the outer circumference of the core 154 ′ at equal intervals in the circumferential direction. do.

The coupling groove 142 'formed in the vane 85 includes a central circular groove 146' into which the core 154 'of the circular shape is inserted so that the coupling portion 152' is inserted into the coupling groove 142 ', and the plurality of fittings 156. ′) Includes a plurality of keyway portions 147 ′ communicating with the circular groove portion 146 ′.

The air conditioner according to the present embodiment has the same configuration and operation as those of the embodiment of the present invention other than the shape of the coupling part 152 'and the coupling groove 142', and a detailed description thereof is omitted.

The air conditioner according to the present embodiment has a weak rotational force dispersion effect as in the round part 158 of the present invention, but it is easy to form the coupling part 152 'and the coupling groove part 142'.

1 is a perspective view of one embodiment of an indoor unit of an air conditioner according to the present invention;

2 is a cross-sectional view during operation of an indoor unit of an embodiment of an air conditioner according to the present invention;

3 is an exploded perspective view of an embodiment of an indoor unit of an air conditioner according to the present invention;

4 is a rear view of the lower discharge unit shown in FIGS. 2 and 3;

5 is a perspective view of the vane and vane connecting member and the motor shown in FIG.

Figure 6 is an enlarged perspective view of the vane connecting member shown in FIG.

7 is an enlarged cross-sectional view of the vane and the vane connecting member of another embodiment of the air conditioner according to the present invention.

Claims (10)

A discharge body in which the air discharge passage is opened; Vanes which are long left and right in the air discharge passage and have defect grooves formed on one side thereof; A vane motor installed on the discharge body and protruding from the horizontal rotating shaft; And a vane connecting member installed on the horizontal rotation shaft and coupled to the vane to be coupled to the coupling groove and coupled to the vane. The coupling unit includes a core and a plurality of key portions protruding spaced apart around the core. The method of claim 1, And an air conditioner protruding from the core, the round part being formed between the plurality of key parts and being rounded. The method of claim 1, The core is circular in shape, The key portion of the air conditioner protrudes at equal intervals in the circumferential direction on the outer circumference of the core. The method according to claim 1, wherein And the key part is formed at an interval of 90 ° about the core. The method of claim 1,  The vane connection member further includes a plate body portion having the coupling portion protruding from one surface thereof, and a rotation shaft connection portion protruding from the other surface of the plate body portion and into which the horizontal rotation shaft is inserted. The method of claim 4, wherein The plate body is an air conditioner in which the reinforcing ribs protrude in a ring shape along an edge of one surface on which the coupling portion protrudes. A main body having an air inlet formed in the center of the front surface, a lower air inlet formed below the air inlet, and an upper air outlet formed above the air inlet; A heat exchanger installed behind the air inlet; A blower installed at a rear side of the heat exchanger to blow air into an upper air outlet and a lower air outlet; An upper discharge unit installed between the upper air discharge port and the blower to adjust a wind direction of the air discharged through the upper air discharge port and to open and close the upper air discharge port and the blower; A lower discharge unit installed between the lower air discharge port and the blower to adjust a wind direction of the air discharged through the lower air discharge port, and open and close between the lower air discharge port and the blower, The lower discharge unit includes: a discharge body having an air discharge passage opening; Vanes which are long left and right in the air discharge passage and have defect grooves formed on one side thereof; A vane motor installed on the discharge body and protruding from the horizontal rotating shaft, and a vane connecting member installed on the horizontal rotating shaft and inserted into and coupled to the coupling groove to be connected to the vane; The coupling unit includes a core and a plurality of key portions protruding spaced apart around the core. The method of claim 1, And an air conditioner protruding from the core, the round part being formed between the plurality of key parts and being rounded. The method of claim 1, The core is circular in shape, The key portion of the air conditioner protrudes at equal intervals in the circumferential direction on the outer circumference of the core. The method of claim 1,  The vane connection member further includes a plate body portion having the coupling portion protruding from one surface thereof, and a rotation shaft connection portion protruding from the other surface of the plate body portion and into which the horizontal rotation shaft is inserted.

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