KR20100005508A - Air conditioner for vehicles - Google Patents

Abstract

PURPOSE: An air-conditioner for a vehicle is provided to reduce operation noise of a door when expending a rotary shaft by reducing contact surface between the rotary shaft of the door and a shaft support part. CONSTITUTION: An air-conditioner for a vehicle comprises a case for an air conditioner, an evaporator, a heater core, a door(105), and a contact surface reducing unit(120). The air conditioner case has an air passage. The evaporator and the heater core are installed in the air passage of the air conditioner case at constant intervals. A door is installed to be rotated through a rotary shaft(111). The door controls the opening degree of the air passage. The contact surface reducing unit is formed at one among the rotary shaft of the door and a shaft supporting part(101). The contact surface reducing unit reduces the contact area of the shaft support part and the rotary shaft. The shaft supporting part is formed inside the air conditioner case in order to support the rotary shaft.

Description

Air conditioner for vehicles

The present invention relates to a vehicle air conditioner, and more particularly, by forming a contact surface reducing means in any one of the shaft and the support portion formed inside the air conditioning case to support the rotating shaft of the door and the rotating shaft, The present invention relates to a vehicle air conditioner capable of reducing the operation noise of the door even when the rotary shaft is expanded by high temperature by reducing the contact area of the branch.

The air conditioner of the vehicle is a vehicle's interior that is installed for the purpose of securing the driver's front and rear view by removing the frost that is caught in the windshield during rainy or winter seasons. Such an air conditioner is usually equipped with a heating device and a cooling device at the same time to selectively introduce the outside air or bet and then heat or cool the air and blow it into the vehicle interior to cool, heat or ventilate the interior of the vehicle.

According to the independent structure of the blower unit, the evaporator unit and the heater core unit, the air conditioning apparatus includes a three-piece type in which the three units are independently provided, the evaporator unit and the heater core unit are built in the air conditioning case, and the blower unit is Semi-center type is provided as a separate unit, and all three units can be divided into a center mounting type that is built in the air conditioning case.

On the other hand, recently, so-called left and right independent air conditioners have been applied to allow individual air-conditioning to be made by supplying air of different temperatures to the driver's seat and the passenger seat in the vehicle interior according to the needs of the occupants.

1 is a configuration diagram showing an example of a conventional left and right independent air conditioner for a vehicle, FIG. 2 is an exploded perspective view showing a semi-center type among conventional left and right independent air conditioners for a vehicle, and FIG. 3 is a perspective view of FIG. 4 is a perspective view illustrating a mode door in FIG. 3, and FIG. 5 is a partial cross-sectional view illustrating a portion A in FIG. 3.

As shown, the left and right independent air conditioner 1 for a vehicle includes an air inlet 27 at an inlet side and a defrost vent 21, a face vent 22, and a floor vent 23 on an outlet side. A plurality of air discharge ports 28 are formed and an air conditioning case 20 in which an air passage 26 is formed to communicate the air inlet 27 and the air discharge port 28 therein, and on the air passage 26. Separating the evaporator 2 and the heater core 3 and the air passages 26 downstream of the evaporator 2 are divided into left and right air passages 26a and 26b. It consists of the wall 30 and the air blower 10 which is installed in the air inlet 27 side of the air conditioning case 20.

Here, the air conditioning case 20 is divided into left and right cases 20a and 20b with respect to the separation wall 30 and assembled with each other.

In addition, between the evaporator 2 and the heater core 3, a temperature control door 25 for temperature control is installed on the left and right air passages 26a and 26b, respectively. Each of the vents 21, 22, 23 of the air passages 26a, 26b is provided with a plurality of mode doors 24 to control various opening modes of the vents 21, 22, 23. Will be performed.

In addition, the blower 10 is formed inside and outside air inlets (11, 12) to be opened and closed by the internal and external air conversion door 13 to selectively enter the internal and external air on the upper side, the inside A blowing fan 14 for blowing air introduced through the internal and external air inlets 11 and 12 to the air conditioning case 20 is installed.

On the other hand, the door 24, such as the temperature control door 25, the mode door 24 is a rotary shaft 24a rotatably installed inside the air conditioning case 20, and one side of the rotary shaft 24a or It is formed on both sides and consists of a plate 24b for adjusting the opening degree of the air passage.

In this case, since the doors 24 are respectively installed on the left and right air passages 26a and 26b with respect to the separation wall 30, one end of the rotation shaft 24a of each door 24 is It is rotatably installed on the shaft support portion 31 formed in the separation wall 30, the other end is rotatably installed on the shaft support portion 29 formed through the inner wall surface of the air conditioning case 20.

In addition, the rotary shafts 24a of the doors 24 installed on the left and right air passages 26a and 26b are connected to each other through the shaft support part 31 of the separation wall 30.

On the other hand, the sealing member such as the rubber member 24c is formed at the edge of the plate 24b to improve the sealing property.

The conventional left and right independent air conditioning apparatus 1 having the above configuration is cooled while the inside or outside air introduced into the air conditioning case 20 by the blower 10 passes through the evaporator 2. (When the air conditioner is ON), this air is divided into the left and right air passages 26a and 26b by the separating wall 30, and then is selectively heated by the heater core 3 and then each air passage 26a. It is supplied to the driver's seat or the passenger seat side of the vehicle interior through each vent 21, 22, 23 formed downstream of the (26b) to independently cool and heat the driver's seat or passenger seat space of the vehicle interior.

However, the rotating shaft 24a of the door 24 and the shaft support part 31 formed on the separating wall 30 are assembled in surface contact with each other. The temperature affects the rotary shaft 24a of the door 24, causing the rotary shaft 24a to expand, thereby increasing friction between the rotary shaft 24a and the shaft support part 31, thereby reducing the friction of the door 24. There was a problem that noise occurs during operation.

An object of the present invention for solving the above problems is to form a contact surface reduction means in any one of the shaft and the shaft support portion formed in the interior of the air conditioning case to support the rotating shaft of the door, the rotating shaft and the shaft support of the door The present invention provides a vehicle air conditioner capable of reducing the operation noise of the door even when the rotating shaft is expanded by high temperature by reducing the contact area of the door.

The present invention for achieving the above object is an air passage formed inside the air passage, the evaporator and the heater core installed at a predetermined interval on the air passage of the air conditioning case, and rotates through the rotating shaft inside the air conditioning case In a vehicle air conditioner comprising a door which is installed to be able to adjust the opening degree of a specific air passage possible, any one of the shaft support portion formed inside the air conditioning case to support the rotating shaft and the rotating shaft of the door contact area between each other Characterized in that the contact surface reducing means is formed to reduce the.

The present invention, by forming a contact surface reduction means in any one of the shaft support portion formed in the interior of the air conditioning case to support the rotating shaft of the door and the rotating shaft, thereby reducing the contact area of the rotating shaft and the shaft support of the door to rotate the shaft due to high temperature The operation noise of the door is also reduced during the expansion of.

In addition, by forming a plurality of projections, which are the contact surface reduction means at equal intervals, the rotation shaft is accurately centered in the shaft support portion during door driving, thereby preventing eccentricity.

A sealing surface is formed on both sides of the separation wall in the circumferential direction of the shaft support portion, and circular sealing members are formed on both ends of the rotating shaft of the door to surround the sealing surface and contact with each other, thereby preventing air leakage through the shaft support portion. The sealing property is improved.

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

In addition, the same parts as in the prior art will be described with reference to the related drawings.

6 is a perspective view showing a vehicle air conditioner according to the present invention, Figure 7 is a partial perspective view showing the contact surface reducing means and the door is disassembled from the separation wall in the vehicle air conditioner according to the present invention, Figure 8 is a 9 is a partial cross-sectional view of the door is disassembled from the separating wall in the vehicle air conditioner according to the present invention and showing another embodiment of the contact surface reducing means.

As shown, the vehicle air conditioner according to the present invention will be described with reference to the prior drawings, the air inlet 27 is formed on the inlet side and the defrost vent 21, the face vent 22, the floor vent ( A plurality of air discharge ports 28 formed of 23 and an air conditioning case 20 having an air passage 26 formed therein to communicate the air inlet 27 and the air discharge port 28 therein, and the air passage The left and right air passages 26a and 26b of the evaporator 2 and the heater core 3 and the air passages 26 downstream of the evaporator 2 are sequentially installed at predetermined intervals on the 26. It consists of a separating wall (100) partitioned into a furnace and an air blower (10) provided at the air inlet (27) side of the air conditioning case (20).

Here, the air conditioning case 20 is composed of left and right cases 20a and 20b divided from each other.

In addition, between the evaporator 2 and the heater core 3, a temperature control door 25 for temperature control is installed, and the temperature control door 25 is the left and right air passages 26a and 26b. It is installed on each of the air passage to bypass the heater core 3 and to adjust the opening degree of the air passage passing through the heater core (3).

In addition, after passing through the evaporator (2), each of the defrost vent (21) to selectively distribute the air through the heater core (3) to each duct (not shown) in communication with a specific position in the vehicle interior In the face vent 22 and the floor vent 23, a plurality of mode doors 110 are installed to perform various air conditioning modes.

In addition, the blower 10 is formed inside and outside air inlets (11, 12) to be opened and closed by the internal and external air conversion door 13 to selectively enter the internal and external air on the upper side, the inside A blowing fan 14 for blowing air introduced through the internal and external air inlets 11 and 12 to the air conditioning case 20 is installed.

Ichirum, the temperature control door 25, the doors 105 installed in the air conditioning case 20, such as the mode door 110 is to adjust the opening degree of a specific air passage, the door 105 If the structure of the mode door 110 is described as an example, the rotary shaft 111 and the rotary shaft 111 is both ends rotatably coupled to the inner wall surface of the separation wall 100 and the air conditioning case 20, respectively. Plate 112 is formed on the side of the), and the sealing member 113 is formed integrally with the edge of the plate (112).

Here, although the sealing member 113 formed at the edge of the plate 112 for sealing the door 105 is preferably made of a rubber material, a variety of sealing materials may be installed.

In addition, circular shaft support portions 101 are formed on inner wall surfaces of the separation wall 100 and the air conditioning case 20 so as to rotatably support the rotation shaft 111 of the door 105. Of course, the rotary shaft of the door 105 assembled to the shaft support portion 101 is also formed in a circular shape.

As such, the door 105 is installed on the left and right air passages 26a and 26b on the basis of the separation wall 100, so that one end of the rotating shaft 111 of each of the doors 105 It is rotatably installed on the shaft support portion 101 formed through the separation wall 100, the other end is rotatably installed on the shaft support portion 101 formed through the inner wall surface of the air conditioning case 20.

In addition, the doors 105 installed on the left and right air passages 26a and 26b are connected to each other by the shaft supporting part 101 of the separation wall 100 at each end of the rotating shaft 111 facing each other. Combined. That is, the protrusion 111a is formed at the end of the rotation shaft 111 of the one side door 105, and the insertion groove 111b is formed at the end of the rotation shaft 111 of the other door 105 so as to insert and engage the protrusion 111a. It is.

At this time, the engaging surface of the protrusion 111a and the insertion groove 111b may be formed in an uneven shape such as a gear shape to prevent slipping.

In addition, the contact surface reduction means 120 is formed in any one of the rotating shaft 111 of the door 105 and the shaft support portion 101 formed in the air conditioning case 20 so as to reduce the contact area of each other. do.

That is, expansion deformation occurs on the rotating shaft 111 of the door 105 due to the high temperature heat of the heater core 3 or the high temperature in the summer, and thus the rotating shaft 111 and the shaft supporting portion 101 are formed. Since the operation noise of the door 105 may be generated between the rotating shafts by reducing the contact area between the rotating shaft 111 of the door 105 and the shaft supporting portion 101 through the contact surface reducing means 120. The operation noise due to the deformation of the 111 can be prevented.

In addition, the contact surface reducing means 120 is formed on any one of the shaft support portion 101 formed through one end of the rotary shaft 111 of the door 105 and the separation wall 100, the contact surface reducing means 120 may be formed on any one of the other end of the rotary shaft 111 of the door 105 and the shaft support portion 101 formed through the inner wall surface of the air conditioning case 20.

At this time, since the inside of the air conditioning case 20 a lot of expansion deformation occurs in the rotary shaft 111 of the door 105 adjacent to the separation wall 100 by the heat of the high temperature by the heater core 3, It is preferable to form the contact surface reduction means 120 on the shaft support portion 101 or the rotation shaft 111 located on the separation wall 100 side rather than the inner wall surface side of the air conditioning case 20.

The contact surface reducing means 120 is formed by protruding a plurality of protrusions 121 and 102 on any one of the facing surfaces of the rotary shaft 111 and the shaft support portion 101.

That is, as shown in FIG. 7, a plurality of protrusions 121 may be formed on the outer circumferential surface of the rotation shaft 111 of the door 105 in the axial direction, and as shown in FIG. 9, on the inner circumferential surface of the shaft support portion 101. A plurality of protrusions 102 may be formed.

Therefore, when the rotary shaft 111 of the door 105 is assembled to the shaft support portion 101, a predetermined gap is formed between the rotary shaft 111 and the shaft support portion 101 by the protrusions 121 and 102. In this case, the protrusions 121 and 102 are in line contact with the mating surface, thereby reducing the contact area between the rotating shaft 111 and the shaft support portion 101 of the door 105.

In addition, the plurality of protrusions 121 and 102 formed on the rotation shaft 111 or the shaft support portion 101 of the door 105 are formed at equal intervals so that the rotation shaft 111 is in the shaft support portion 101. To keep the center exactly.

That is, the protrusions 121 and 102 are formed at equal intervals to uniformly support the rotating shaft 111 so as to prevent the rotating shaft 111 from being eccentric in the shaft supporting portion 101 when the door 105 is rotated. do.

In the drawings, only two projections 121 and 102 are formed on the rotation shaft 111 or the shaft support portion 101, but three to four or more are possible. In this case, when the two projections 121 and 102 are formed, it is preferable to form symmetrically about the rotation shaft 111.

In addition, the protrusions 121 and 102 may be formed in a semicircular cross-sectional shape, but may be formed in various shapes.

A sealing surface 101a is formed on both side surfaces of the separation wall 100 in the circumferential direction of the shaft support portion 101, and a circumference of the sealing surface 101a is formed at both ends of the rotation shaft 111 of the door 105. A circular sealing member 114 is formed in contact with the wrapping.

Here, the sealing surface 101a is formed as an inclined surface protruding from the side of the separation wall 100, the circular sealing member 114 is extended from the sealing member 113 formed on the edge of the plate 112 Is formed.

Accordingly, when both ends of the rotation shaft 111 of the door 105 are coupled to the shaft support portion 101 formed on the separation wall 100 and the shaft support portion 101 formed on the inner wall surface of the air conditioning case 20, the rotation shaft Circular sealing members 114 formed at both ends of the 111 is elastically in close contact with the sealing surface 101a of the separation wall 100 and the sealing surface (not shown) of the air conditioning case 20 and the shaft support portion 101. The sealing property is improved by preventing the leakage of air through.

That is, the contact area of the rotating shaft 111 of the door 105 and the shaft support portion 101 of the separation wall 100 is reduced by the protrusions 121 and 102, which is caused by the reduction of the contact area. The air leakage may be prevented through the sealing surface 101a formed on the separation wall 110 and the circular sealing member 114 formed on the rotating shaft 111.

On the other hand, the present invention relates to the shape of the door, such as the center pivot-type door, such as the plate 112 is formed on both sides of the rotating shaft 111, as well as the flat-type door formed on only one side of the rotary shaft 111 All are applicable without.

In addition, in the drawings, only the case where the contact surface reduction means 120 is formed between the rotation shaft 111 of the mode door 110 and the shaft support portion 101 of the separation wall 100, but is not limited thereto. The contact surface reduction means 120 may be formed between the rotation shaft 111 and the shaft support part 101 of all the doors 105 installed in the air conditioning case 20 as well as the temperature control door 25. And the same effect can be obtained.

Hereinafter, the operation of the vehicle air conditioner according to the present invention will be described. Here, only the cooling mode (see FIG. 1) will be described as a representative mode.

First, when air is introduced into the air conditioning case 20 by the operation of the blower 10, the air is changed into cold air while passing through the evaporator 2.

At this time, the cold air heat exchanged in the evaporator 2 is uniformly distributed to the left air passage 26a and the right air passage 26b by the separation wall 100.

Subsequently, the coldly changed air passing through the evaporator 2 bypasses the heater core 3 by the temperature adjusting door 25, and then the vent 21 opened by the mode door 110. By discharging into the vehicle interior through the 22 and 23, the driver's seat and the passenger seat in the vehicle compartment are cooled.

Of course, if the temperature control door 25 and the mode door 110 to be independently operated to the left and right of the separation wall 100 in the process to control each independently, the driver's seat and the passenger's seat to the desired temperature Can be controlled.

On the other hand, the above has been described only for the cooling mode, in addition to this can be carried out a variety of air conditioning modes, including the heating mode, such a air conditioning mode is known in the detailed description is omitted here.

In the process of operating the door 105 as described above, the rotating shaft 111 and the shaft support part 101 of the door 105 reduce frictional contact with each other through the contact surface reducing means 120. As a result, the operation noise of the door 105 may be reduced even when the rotating shaft 111 of the door 105 expands and deforms due to a high temperature of the heater core 3 or a high summer temperature.

1 is a configuration diagram showing an example of a conventional left and right independent air conditioning apparatus for a vehicle;

Figure 2 is an exploded perspective view showing a semi-center type in the conventional left and right independent air conditioning apparatus for vehicles,

3 is a perspective view of the combination of FIG.

4 is a perspective view showing a mode door in FIG.

5 is a partial cross-sectional view showing a portion A in FIG. 3;

6 is a perspective view showing a vehicle air conditioner according to the present invention;

7 is a partial perspective view illustrating a contact surface reducing means in a state in which a door is disassembled from a separating wall in a vehicle air conditioner according to the present invention;

8 is a cross-sectional view of FIG.

9 is a partial perspective view showing another embodiment of the contact surface reducing means in the state in which the door is disassembled from the separation wall in the vehicle air conditioner according to the present invention.

<Description of Signs of Major Parts of Drawings>

100: dividing wall 101: shaft support portion

101a: sealing surface

102,121: protrusion 105: door

110: mode door 111: rotation axis

112: plate 113: sealing member

114: circular sealing member 120: contact surface reducing means

Claims (6)

An air conditioning case 20 having an air passage 26 formed therein; An evaporator (2) and a heater core (3) installed at a predetermined interval on the air passage (26) of the air conditioning case (20); In the air conditioning apparatus for a vehicle comprising a door 105 installed rotatably through the rotating shaft 111 inside the air conditioning case 20 to adjust the opening degree of a specific air passage, Contact surface reduction means to reduce the contact area between the rotary shaft 111 of the door 105 and the shaft support portion 101 formed inside the air conditioning case 20 to support the rotary shaft 111 Vehicle air conditioning apparatus characterized in that the 120 is formed. The method of claim 1, Separation wall 100 is installed inside the air conditioning case 20 so as to divide the downstream air passage of the evaporator 2 to the left and right, and the rotation shaft 111 of the door 105 in the separation wall 100. Shaft support portion 101 is formed to rotatably support, and any one of the rotating shaft 111 of the door 105 and the shaft support portion 101 of the separation wall 100 can reduce the contact area therebetween. Vehicle air conditioning apparatus, characterized in that the contact surface reducing means 120 is formed to be. The method according to claim 1 or 2, The contact surface reduction means 120, Vehicle air conditioning apparatus, characterized in that formed by forming a plurality of protrusions (121) (102) on any one of the facing surface of the rotary shaft 111 and the shaft support portion (101). The method of claim 3, wherein The plurality of protrusions 121, 102 is a vehicle air conditioning apparatus, characterized in that formed at equal intervals. The method of claim 3, wherein The protrusion 121, 102 is a vehicle air conditioning apparatus, characterized in that formed in a semi-circular cross-sectional shape. The method of claim 2, Sealing surfaces 101a are formed on both side surfaces of the separation wall 100 in the circumferential direction of the shaft support portion 101, and both ends of the rotating shaft 111 of the door 105 are wrapped around the sealing surface 101a. Vehicle air conditioning apparatus characterized in that the circular sealing member 114 is formed to contact and prevent air leakage.

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