KR100521394B1 - Film door drive system of vehicle air conditioner - Google Patents

Abstract

The present invention relates to a film door driving device of an air conditioner, which simplifies the driving device of the film door and prevents slippage of the film door even when the surface tension of the film door is relaxed under high temperature. An air conditioner having a heat exchanger installed in an air conditioning case communicating with an interior of a vehicle, and having a ventilation means for blowing an air heat exchanger heat exchanged therefrom, wherein the case is rotatably supported in a vertical direction and has a polygonal arrangement structure. It has a plurality of rollers having a close contact means for close contact with the film door; A thin film door having a plurality of openings which receive a rotational force closely to the outside of the respective rollers and select an air conditioning heat at a predetermined position; And it characterized in that it comprises a drive means for rotating the roller.

Description

Film door drive device of vehicle air conditioner

The present invention relates to a vehicle air conditioner for distributing air conditioning heat using a film door, and more particularly, to a film door driving device of a vehicle air conditioner capable of transmitting accurate driving force to the film door.

In the vehicle air conditioner for air conditioning the vehicle, an evaporator, which is a cooling heat exchanger, and a heater, which is a heat exchanger for heating, are installed in an air-conditioning case sequentially from an air flow direction. Formed.

These discharge ports are opened and closed by a door provided at the rear end of the heat exchanger to discharge air conditioning heat in any specific direction in the vehicle compartment, for example, selectively discharged to the vent, defrost, and flow sides.

The door for selecting the air-conditioning heat is made of a member of the membrane and the driving method can be divided into an open type and a slide type.

The retractable type shields the air flow path while rotating about the axis, and its structure is simple. However, when the opening and closing of the flow path is necessary, space according to the rotation radius is required to limit the miniaturization.

The sliding type is a structure that slides in accordance with the rotation of the drive shaft by coupling the doors of the membrane to at least two drive shafts in the form of a high space utilization rate, which has been widely used in recent years.

In the conventional example of such a sliding door, a perforated hole is formed in the upper and lower sides of the film door, and the air discharge port is selectively opened and closed by driving and moving a drive shaft having a tooth corresponding to the perforated hole.

However, in the above-described conventional design, since the operating distance of the film door depends on the pitch of the punched hole, fine driving is impossible, and the operation of the film door deviates from the tooth drive shaft at the time of sudden stop and start. In addition, as the perforation of the film door is in contact with the toothed drive shaft, not only the inner diameter of the perforation is increased at the endurance side, but also the driving device for driving the film door is complicated, thereby increasing the manufacturing cost.

In addition, a method of driving by contact force on one side of the film by installing a cylindrical roller vertically inside the film door has been proposed, but it is impossible to control the tension of the film door when the film is deformed and relaxed due to long-term operation and operation under a high temperature environment. Therefore, there is a problem in the distribution of air conditioning heat such as slip may occur on the drive shaft.

The present invention has been devised in view of this point, and in particular, the drive of the film door is simplified, and even when the surface tension of the film door is relaxed in a high temperature environment, the slippage of the film door does not occur so that the opening and closing of the discharge port is accurately performed. It is an object of the present invention to provide a film door driving apparatus of an air conditioner.

Another object of the present invention is to provide a film door driving apparatus of an air conditioner that can maintain the airtight between the air conditioning case and the end of the film door to prevent the leakage of air conditioning heat.

In order to achieve the above object, the present invention provides an air conditioner having a heat exchanger installed in an air conditioning case communicating with an interior of an interior of a vehicle, and a ventilation means for blowing an air heat exchanger heat exchanged therefrom. A plurality of rollers having a polygonal arrangement structure and having a close contact means for closely contacting the film door; A thin film door having a plurality of openings which receive a rotational force closely to the outside of the respective rollers and select an air conditioning heat at a predetermined position; And it characterized in that it comprises a drive means for rotating the roller.

The outer circumferential surface of the roller is coated with a non-slip member such as rubber or silicon to be in close contact with the film door, and the contact means includes a pressing roller which rotates in close contact with the roller installed in the actuator, and accommodates the shaft of the pressing roller. It is made of a variable boss that can be moved finely along the bearing hole, and the elastic member in close contact with the variable boss to the roller side.

In addition, the present invention is to form a guide rail movable in the air conditioning case while the end is inserted on the path that the film door is moved, non-woven fabrics to face each other toward the film door inside the guide rail to maintain airtightness. .

According to this configuration, the rotational force of the roller is in close contact with the outer circumferential surface of the roller to select the discharge direction, and the film door is squeezed and rotated between the pressing rollers that rotate in close contact with the roller built on the actuator. In addition, since both ends of the film door move in the state accommodated in the guide rail, it is possible to prevent the leakage of air conditioning heat.

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

1 is a schematic perspective view of a partially cut air-conditioning case showing an installation example of the film door of the present invention, Figure 2 is a schematic cross-sectional view of the air case is installed film door according to the present invention.

As shown in the present invention, a cooling evaporator 2 and a heater heater 3 for heating the air conditioner are sequentially installed in the air conditioner case 1, and the air conditioning heat from the air conditioner from the air conditioner is sequentially installed. The discharge port switching device 10 for supplying selectively to each part is provided.

The discharge port switching device 10 is installed downstream of the air flow direction of the air-conditioning case, and at the rear end thereof, a vent discharge port 4, a defroster discharge port 5, and a floor discharge port 6 communicating with the interior of the vehicle are formed. The discharge direction of the air conditioning heat is selected by the plastic film door 11 made of polyethylene resin, and discharged to the discharge port.

The film door 11 has openings 11a and 11b for selectively opening and closing the respective discharge ports 4-6, and each discharge port is formed by rollers having a polygonal arrangement structure disposed in the air conditioning case. It is movably supported in the state opposite to 4-6).

The film door 11 has a moving path determined according to the arrangement of the rollers, the rollers of which are composed of the auxiliary rollers 12-15 and the driving rollers 16, which have a polygonal arrangement. The auxiliary rollers 12-15 are rotatably arranged on both sides in the width direction of each discharge port 4-6, and are driven integrally with the actuator which is a driving means in the center to impart a moving force to the film door 11. The roller 16 is arrange | positioned. The drive roller 16 is preferably disposed close to the auxiliary roller 12-15 to reduce the area of the air conditioning case as much as possible. The actuator is also applied to an automatic method using a stepping motor or a manual method using a cable.

In addition, the driving roller 16 is disposed in close contact with the pressing roller 17 which is a film door contact means, and the film door 11 is squeezed and moved between them.

The pressing roller 17 is finely moved along the guide hole 8 formed in the air conditioning case 1, thereby allowing the film door 11 to closely contact the driving roller 16 to accurately transmit rotational force.

That is, the lower shaft 17a (the same as the upper shaft) of the pressing roller 17 is made to be retracted by the variable boss 18, and the variable boss 18 is movably seated in the guide hole 8 and the variable boss. 18, the side of the driving roller 16 is provided with a coil spring 19 so that the elastic force acts on the driving roller 16 side so that the pressing roller 17 can be kept in close contact with the driving roller 16 at all times. In the state in which the film door 11 is in close contact, rotation is possible.

On the other hand, in order to prevent slippage of the film door 11, the outer peripheral surface of the drive roller 16 is coated with a non-slip member in addition to the above-mentioned close contact means to increase friction with the film door 11.

The non-slip member is preferably made of rubber 16a or silicon, and may be coated on the auxiliary roller 12-15 or the pressing roller 17.

And the present invention is installed on the movement path of the film door 11, that is, the notification case (1) is provided with a guide rail 20 having an upper opening that is received and moved at both ends of the film door 11, the guide rail On the inner circumferential surface of 20, the nonwoven fabric 21 protrudes from each other in close contact with both sides of the end portion of the film door 11, thereby preventing the air conditioning heat from leaking to the discharge port not selected.

According to the present invention configured as described above, the air outlet port facing the openings 11a and 11b is opened when the film door 11 is moved. For example, in a state where the second opening 11b is located with the defrost discharge outlet 5, the defrost discharge port is introduced into the air conditioning case 1 and passed through the air second opening 11b passing through the first opening 11a. It discharges to (5) and flows into a room.

In this state, when the film door 11 is moved by the rotation of the driving roller 16 and the second opening 11b is positioned at the defrost discharge port 5 simultaneously, the vent discharge port 4 and the defrost discharge port 5 Since the air is opened, air flowing into the air conditioning case 1 and passing through the first opening 11a of the film door 11 is simultaneously discharged to both sides.

And if the 2nd opening part 11b is opposed to the flow discharge port 6, and a part of 1st opening part 11a is located in the vent discharge port 4, air-conditioning heat will be separated in both directions and discharged to room.

In this movement of the film door, the film door 11 is moved in close contact with the drive roller 16, in particular the film door 11 is a compression roller 17 in close contact with the drive roller (16). Since the rotational force of the driving roller 16 is precisely transmitted by squeezing by), it is possible to accurately select a direction or air volume of the air conditioning heat.

In addition, the film door 11 has a non-slip member coated on the outer circumferential surface of the drive roller 16 so that the adhesion thereof is enhanced so that slip does not occur. Moreover, the film door is deformed by high temperature air conditioning heat exchanged by a heater. In addition, opening and closing of each discharge port can be performed correctly by a non-slip member or a close contact means.

And the present invention is selected by installing the guide rail 20 on the movement path of the film door 11 to form a non-woven fabric 21 to face each other inside to move the upper and lower ends of the film door 11 in close contact with each other. The air-conditioning heat to the discharge opening which is not made can be prevented from flowing out.

As described above, the present invention is to move the film door made of a plastic material in a state in which both sides of the film door is squeezed by the driving roller and the pressing roller to enhance the adhesion between the driving roller and the film door to accurately open and close the operation of each discharge port. It can be carried out, especially in the high temperature environment, even if the tension of the film door is relaxed, the slip does not occur from the driving roller, and also the adhesion between the film door and the driving roller can be enhanced by coating the outer circumferential surface of the driving roller with a non-slip member. .

Furthermore, by installing a guide rail in which a nonwoven fabric is installed on the movement path of the film door, the guide rail is moved in a state where the lower end is inserted, thereby preventing the air conditioning heat from leaking between the air conditioning case and the end of the film door.

1 is a schematic perspective view showing a film door driving apparatus according to the present invention,

Figure 2 is a plan sectional view showing an air conditioning apparatus of the present invention,

3 is a cross-sectional view taken along line A-A of FIG. 2 showing the present invention film door contact means;

4 is a cross-sectional view taken along the line B-B of FIG.

5 is a cross-sectional view taken along the line C-C of Figure 2 showing the air-condition heat sealing means of the present invention.

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

1; air conditioning case 2; evaporator

3; heater core 10; discharge outlet switching device

11; film door 12-15; auxiliary roller

16; drive roller 17; compression roller

18; Boss 19; Spring

20; guide rail 21; nonwoven fabric

Claims (7)

In the air conditioning apparatus provided with a heat exchanger is installed inside the air conditioning case communicating with the interior of the vehicle, and the air-conditioning heat exchanger therefrom, A plurality of rollers rotatably supported in the vertical direction in the case, having a polygonal arrangement structure, and having a close contact means for closely contacting the film door; A thin film door having a plurality of openings which receive a rotational force closely to the outside of the respective rollers and select an air conditioner at a predetermined position; And Film door driving device of the vehicle air conditioner comprising a drive means for rotating the roller. The film door driving apparatus of claim 1, wherein a non-slip member in close contact with the film door is coated on an outer circumferential surface of the roller. 3. The film door driving apparatus of claim 2, wherein the non-slip member is made of rubber. 3. The film door driving apparatus of claim 2, wherein the non-slip member is made of silicon. The method of claim 1, wherein the contact means comprises a pressing roller, a variable boss accommodating the shaft of the pressing roller and having a predetermined clearance and capable of fine movement along the bearing hole, and an elastic member that closely contacts the variable boss. Film door drive device of the vehicle air conditioner. The film door driving apparatus of claim 1, further comprising a guide rail installed at an air conditioning case such that an end portion is inserted into a path through which the film door moves. 7. The film door driving apparatus of claim 6, wherein the nonwoven fabric protrudes from the inside of the guide rail toward the film door.