KR20110062799A - Air conditioner for vehicles - Google Patents

Abstract

PURPOSE: An air conditioner for a vehicle is provided to prevent shock occurred in a door from being transferred to an actuator by installing an elastic member between the rotary shaft of the door and the rotary shaft of the actuator. CONSTITUTION: An air conditioner for a vehicle comprises an air conditioning case(10), a door(100), an actuator(200), and an elastic member(150). The door is rotatably installed inside the air conditioning case and controls the opening degree of a specific air path. The actuator is installed on the outer surface of the air conditioning case and is connected to the rotary shaft(110) of the door to rotate the door. The elastic member is installed between the rotary shaft of the door and the rotary shaft(201) of the actuator and absorb shock occurred when the door is rotated.

Description

Air conditioner for vehicles

The present invention relates to a vehicle air conditioner, and more particularly, by installing an elastic member between the rotating shaft of the door and the rotating shaft of the actuator, to prevent the shock generated during the rotational driving of the door to be transmitted to the actuator. The present invention relates to a vehicle air conditioner capable of compensating angular tolerances of doors and actuators, thereby improving sealing properties, thereby improving cooling and heating performance due to air leakage prevention, and preventing restraint of actuators.

In general, the vehicle air conditioner is a vehicle 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 the rainy season or the winter, or by cooling or heating the interior of the car during the summer or winter season. In addition, such an air conditioner is generally equipped with a heating device and a cooling device at the same time to selectively introduce the outside air or bet, the air is heated or cooled and blown 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 conditioner includes a three piece type in which the three units are independently provided, and an evaporator unit and the heater core unit in the air conditioning case. It can be divided into semi-center type (Central Center type) that is built in the air blower unit is provided as a separate unit, and the center mounting type (Center Mounting Type) that all three units are built in the air conditioning case.

FIG. 1 shows the semi-center type vehicle air conditioner. The air conditioner 1 has an air inlet 11 formed at an inlet side and an opening degree by mode doors 16a, 16b, 16c at the outlet side, respectively. An air conditioning case 10 in which the defrost vent 12a, the face vent 12b, and the floor vents 12c and 12d are adjusted; A blower (not shown) connected to the air inlet 11 of the air conditioning case 10 to blow the inside or outside air; An evaporator (2) and a heater core (3) embedded in the air conditioning case (10); The opening degree of the cold air passage P1 installed between the evaporator 2 and the heater core 3 and bypassing the heater core 3 and the hot air passage P2 passing through the heater core 3 is determined. It comprises a temperature control door 15 to adjust.

Further, a guide wall 17 is formed between the rear side warm air passage P2 of the heater core 3 and the floor vents 12c and 12d to partition each other. The floor vents 12c and 12d are branched into a front seat vent 12c and a rear seat vent 12d.

And, in order to solve the temperature difference between the front seat and the back seat is severe, the rear side of the floor vent (12c, 12d) induces the air discharge to the console box (not shown), which is the center of the vehicle interior air conditioning air into the rear seat space The supplying console vent 12e is installed.

Here, the console vent (12e) is formed branched from the face vent (12b), and guides some of the air passing through the face vent (12b) to the console box to cool and heat the rear seat space.

According to the vehicle air conditioner 1 configured as described above, when the maximum cooling mode is operated, the temperature control door 15 opens the cold air passage P1 and closes the hot air passage P2. do. Accordingly, the air blown by the blower not shown is exchanged with the refrigerant flowing through the evaporator 2 while passing through the evaporator 2 to be changed into cold, and then the mixing chamber (Mixing) through the cold air passage (P1) The air flows toward the chamber (MC) and is then opened by the mode doors 16a, 16b, and 16c according to a predetermined air conditioning mode (vent mode, bi-level mode, floor mode, mix mode, defrost mode). By discharging to the vehicle interior via ˜12e), cooling of the vehicle interior is performed.

In addition, when the maximum heating mode is activated, the temperature control door 15 closes the cold air passage P1 and opens the hot air passage P2. Accordingly, the air blown by the blower not shown is heat exchanged with the coolant flowing through the inside of the heater core 3 while passing through the heater core 3 through the hot air passage (P2) after passing through the evaporator (2) After changing to warmth, it flows toward the mixing chamber MC, and is then discharged into the vehicle interior through vents 12a to 12e opened by the mode doors 16a, 16b, and 16c according to a predetermined air conditioning mode. Heating is carried out.

On the other hand, when the cooling mode other than the maximum cooling mode, that is, 1/2 cooling mode is operated, the temperature control door 15 is rotated to the neutral position, the cooling air passage (P1) with respect to the mixing chamber (MC) And open all of the warm air passages (P2). Therefore, after the cool air passing through the evaporator 2 and the warm air passing through the heater core 3 are mixed by flowing toward the mixing chamber MC, they are opened by the mode doors 16a, 16b, and 16c according to a predetermined air conditioning mode. It is discharged to the vehicle interior through the vent (12a ~ 12e).

And, as shown in Figure 2, the arm 50, the lever on the outer surface of the air conditioning case 10 to drive the door 20, such as the temperature control door 15 or the mode door (16a, 16b, 16c) 40, the actuator 30 is provided. In this case, the arm 50 is directly connected to the rotating shaft 21 of the door 20 to rotate together with the door 20.

Therefore, when the driver controls the air conditioning switch (not shown) of the controller installed in the center fascia panel (not shown) of the vehicle, the actuator 30 is driven to rotate the lever 40, the lever 40 Rotating, the arm 50 connected through the slot 41 and the pin 51 of the lever 40 is rotated by a predetermined angle to drive the door 20 to rotate at a predetermined angle.

However, as described above, since the arm 50, the lever 40, and the actuator 30 need to be installed to drive the door 20, the number of parts increases and the lever 40 and the arm 50 increase. There is a problem that the noise is generated according to the drive.

In addition, a space for driving the lever 40 and the arm 50 must be secured, and tolerances are also generated during assembly of the lever 40 and the arm 50 and injection molding of each unit. As a result, an angle tolerance occurs between the lever 40 and the arm 50 which rotates by a certain angle by the driving of the actuator 30, which makes it difficult to accurately set the driving angle of the door 20.

In order to solve the above problem, as shown in FIG. 3, the rotation shaft 31 of the actuator 30 may be directly connected to the rotation shaft 21 of the door 20. In this case, since there is no need for the lever 40 and the arm 50, the number of parts is small, and there is no need for joint generation or driving space for the lever 40 and the arm 50 according to the driving of the lever 40 and the arm 50. In addition, since the driving angle of the door 20 is adjusted only by the feedback voltage of the actuator 30, the straightness of the temperature is easily improved.

However, in the related art, since the actuator 30 and the door 20 are directly connected to each other, there is no shock absorbing function of the lever 40 and the arm 50. The impact generated when colliding with the inner surface of the air conditioning case) is transmitted to the actuator 30 without filtration, causing a problem of the actuator 30.

In addition, even if the lever 40 and the arm 50 are omitted, there may be an assembly tolerance between the rotation shaft 31 of the actuator 30 and the rotation shaft 21 of the door 20, and thus there is a gap between the actuator 30 and the door 20. An angle tolerance occurs, which prevents the door 20 from closing normally when the door 20 closes a specific air passage of the air conditioning case 10, that is, the sealing surface of the door 20 is formed on the inner surface of the air conditioning case 10. There was also a problem that the air does not come into contact with the air leaks and the cooling and heating performance is lowered.

In addition, when the driving angle of the actuator 30 is larger than the rotation angle of the door 20 in order to prevent the leakage of air, there is a problem in that the restraint of the actuator 30 occurs.

An object of the present invention for solving the above problems is to install an elastic member between the rotating shaft of the door and the rotating shaft of the actuator, thereby preventing the shock generated during the rotational drive of the door to be transmitted to the actuator and to the door Compensating the angular tolerance of the and actuator to improve the sealing properties, thereby improving the cooling and heating performance due to the prevention of air leakage and to provide a vehicle air conditioner that can also prevent the restraint of the actuator.

The present invention for achieving the above object is an air conditioning case, a door rotatably installed inside the air conditioning case to adjust the opening degree of a specific air passage, and installed on the outer surface of the air conditioning case and the rotating shaft of the door In the vehicle air conditioner comprising an actuator for driving the door to rotate at a predetermined angle, the air conditioning apparatus for absorbing the shock generated during the rotation of the predetermined angle of the door to compensate for the angular tolerance between the door and the actuator An elastic member is installed between the rotating shaft of the door and the rotating shaft of the actuator.

According to the present invention, an elastic member is provided between the rotating shaft of the door and the rotating shaft of the actuator so as to be double-injected or detached, thereby absorbing the shock generated by the door (the impact generated when the door collides with the inner surface of the air conditioning case). This prevents the actuator from failing.

Further, in consideration of the angle tolerance caused by the assembly tolerance between the rotation axis of the actuator and the rotation axis of the door, by setting the driving angle of the actuator to be larger than the rotation angle of the door, the angle tolerance between the actuator and the door is compensated and at the same time The elastic property prevents the actuator from being restrained, and improves the sealing property and the cooling and heating performance due to the prevention of air leakage.

In addition, by forming a plurality of shock absorbing grooves between the outer circumferential surface and the inner circumferential surface of the elastic member, it is possible to more smoothly absorb the shock generated during the rotational driving of the door, as well as to improve the shock absorbing function.

In addition, the outer peripheral surface of the elastic member and the inner circumferential surface of the coupling groove, each of the serration is omitted by a predetermined width to form a groove portion on the outer peripheral surface of the elastic member, the inner peripheral surface of the coupling groove by forming a protruding surface portion to be inserted into the groove, the elastic When inserting the member into the engaging groove, it can be inserted in the correct insertion position, thereby assembling the rotation axis of the actuator and the rotation axis of the door in the correct position.

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.

Figure 4 is an exploded perspective view showing a first embodiment in which the elastic member is installed between the actuator and the door in the vehicle air conditioner of the present invention, Figure 5 is an enlarged perspective view of the elastic member in Figure 4, Figure 6 An exploded perspective view showing a second embodiment in which the elastic member is installed between the actuator and the door in the vehicular air conditioner of the present invention. FIG. 7 is an exploded perspective view in which the elastic member part is enlarged in FIG. 6, and FIG. 8 is a drive of the actuator. It is a figure which shows the angle and the rotation angle of a door.

First, the vehicle air conditioner according to the present invention will be briefly described with reference to FIG. 1, where an air inlet 11 is formed at the inlet side and the defrosting is controlled by the mode doors 16a, 16b, 16c at the outlet side, respectively. An air conditioning case 10 in which a vent 12a, a face vent 12b, and floor vents 12c and 12d are formed and a cold air passage P1 and a warm air passage P2 are formed on an air passage therein; A blower (not shown) connected to the air inlet 11 of the air conditioning case 10 to blow the inside or outside air; An evaporator (2) and a heater core (3) installed on an air passage in the air conditioning case (10); The opening degree of the cold air passage P1 installed between the evaporator 2 and the heater core 3 and bypassing the heater core 3 and the hot air passage P2 passing through the heater core 3 is determined. It comprises a temperature control door 15 to adjust.

In addition, each of the vents is a defrost vent (12a) for discharging the air toward the windshield of the vehicle, a face vent (12b) for discharging the air toward the face of the front occupant, and to discharge the air toward the foot of the passenger For floor vents 12c and 12d.

The floor vents 12c and 12d are divided into a front seat vent 12c for discharging air toward the front occupant's foot and a rear seat vent 12d for discharging air toward the rear occupant's foot. It is.

And, the door 100, such as the temperature control door 15 and the mode door (16a, 16b, 16c), the rotating shaft 110 is installed at both ends rotatably on both sides of the interior of the air conditioning case 10, The door plate 120 is formed on the outer circumferential surface of the rotary shaft 110, and the sealing member 130 to improve the sealing property formed on the edge of the door plate 120.

Here, since the door 100 is manufactured in various forms according to the structure of the air conditioning case 10 in the present invention will be described in the case where the door plate 120 is formed only on one side of the outer peripheral surface of the rotary shaft 110. . Of course, the door plate 120 may be formed on both sides of the outer circumferential surface of the rotation shaft 110.

On the other hand, the sealing member 130 formed at the edge of the door plate 120 for sealing the door 100, as well as the rubber material formed integrally through the double injection of the door plate 120, as well as the door plate 120 Various types of sealing member 130, such as a sponge-like sealing member attached to the) is used.

In addition, an actuator 200 is installed on an outer surface of the air conditioning case 10 to drive the door 100 at a predetermined angle.

At this time, one end of the rotation shaft 110 of the door 100 is formed with a coupling groove 111 so that one end of the rotation shaft 201 of the actuator 200 can be inserted and coupled.

In addition, while absorbing the shock (shock generated when the door 100 collides with the inner surface of the air conditioning case 10) generated by the rotation of the predetermined angle of the door 100, the door 100 and the actuator An elastic member 150 is installed between the rotating shaft 110 of the door 100 and the rotating shaft 201 of the actuator 200 to compensate for the angular tolerance of the 200.

That is, the rotary shaft 201 of the actuator 200 is directly connected to the rotary shaft 110 of the door 100, but has a predetermined elasticity between the rotary shaft 110 of the door 100 and the rotary shaft 201 of the actuator 200. The rubber member elastic member 150 is installed to have a shock absorbing function.

Therefore, the elastic member 150 between the rotating shaft 201 of the actuator 200 and the rotating shaft 110 of the door 100 acts as a shock absorber, thereby absorbing the shock generated by the door 100 to actuate the actuator 200. ) To prevent the failure of the actuator 200.

In addition, as shown in FIG. 8, the driving angle θ2 of the actuator 200 is determined by considering the angular tolerance caused by the assembly tolerance between the rotating shaft 201 of the actuator 200 and the rotating shaft 110 of the door 100. It is preferable to set larger than the rotation angle θ1 of 100).

As such, by setting the driving angle θ2 of the actuator 200 to be larger than the rotation angle θ1 of the door 100, the angular tolerances of the actuator 200 and the door 100 can be compensated for, and the elasticity The elastic nature of the member 150 prevents the restraining of the actuator 200.

That is, as shown in FIG. 8, when the driving angle θ2 of the actuator 200 is larger than the rotation angle θ1 of the door 100, the door may be opened due to the angle tolerance between the actuator 200 and the door 100. Since the sealing surface of the door plate 120 of 100 does not come into close contact with the inner surface of the air conditioning case 10, the door 100 is further rotated by the angle of the “A” portion, so that the sealing surface of the door 100 has the air conditioning case. Smoothly adhered to the inner surface of the (10) to prevent the leakage of air and improve the cooling and heating performance.

In addition, while the door 100 is located at the minimum or maximum angle within the rotation angle θ1, the actuator 200 is constrained to the actuator 200 in a process of further rotating by the angle of the “A” portion. Although this may occur, since the elastic member 150 elastically compensates for the angle of the "A" portion, it is possible to prevent the restraining of the actuator 200.

The outer circumferential surface of the elastic member 150 is coupled to the inner circumferential surface of the coupling groove 111 through the first coupling means, and the inner circumferential surface is detachable through the rotation shaft 201 and the second coupling means of the actuator 200. To be combined.

The first coupling means, as shown in the first embodiment of Figures 4 and 5 integrally the outer peripheral surface of the elastic member 150 through the double injection to the inner peripheral surface of the coupling groove 111 of the rotating shaft 110 of the door 100 6 or 7, serrations 153 and 112 may be formed on the outer circumferential surface of the elastic member 150 and the inner circumferential surface of the coupling groove 111 of the rotating shaft 110 of the door 100, respectively. It can also be processed and joined together.

At this time, the outer circumference of the elastic member 150 and the inner circumference of the coupling groove 111 are omitted a serration (153, 112) by a predetermined width, respectively, to form a groove 154 on the outer circumference of the elastic member 150, the coupling groove ( On the inner circumferential surface of 111, a protruding surface portion 113 inserted into the groove portion 154 is formed.

Accordingly, when the elastic member 150 is inserted into the coupling groove 111, the elastic member 150 may be inserted at the correct insertion position, thereby rotating the rotation shaft 201 of the actuator 200 and the rotation shaft 110 of the door 100. It can be assembled in the correct position.

As such, the elastic member 150 may be installed to be detachably inserted through the double injection or serration 112 and 153 into the coupling groove 111 of the rotation shaft 110 of the door 100.

In addition, the second coupling means is formed by detachably coupling each other by forming gears 151 and 202 on the inner circumferential surface of the elastic member 150 and the outer circumferential surface of the rotating shaft 201 of the actuator 200, respectively.

On the other hand, between the outer circumferential surface and the inner circumferential surface of the elastic member 150 is formed a plurality of shock absorbing grooves 152 spaced apart from each other in the circumferential direction. Therefore, the shock generated during the rotational driving of the door 100 can be more smoothly absorbed, and the shock absorbing function is also improved.

1 is a cross-sectional view showing a conventional vehicle air conditioner,

Figure 2 is an exploded perspective view showing a case where the arm and the lever is installed between the actuator and the door in a conventional vehicle air conditioner,

3 is an exploded perspective view illustrating a case in which an actuator is directly connected to a door in a conventional vehicle air conditioner;

4 is an exploded perspective view showing a first embodiment in which an elastic member is installed between an actuator and a door in a vehicle air conditioner of the present invention;

5 is an enlarged perspective view of an elastic member in FIG. 4;

6 is an exploded perspective view showing a second embodiment in which an elastic member is installed between an actuator and a door in a vehicle air conditioner of the present invention;

7 is an exploded perspective view illustrating an enlarged portion of an elastic member in FIG. 6;

8 is a view showing the driving angle of the actuator and the rotation angle of the door.

Description of the Related Art [0002]

100: door 110,201: rotating shaft

111: coupling groove 112,153: serration

113: protrusion surface portion 120: door plate

130: sealing member 150: elastic member

151,202: gear portion 152: shock absorbing groove

154: groove 200: actuator

Claims (8)

The air conditioning case 10, the door 100 is rotatably installed in the air conditioning case 10 to adjust the opening degree of a specific air passage, and the door ( In the vehicle air conditioning apparatus including an actuator 200 connected to the rotary shaft 110 of the 100 and driving the door 100 to rotate at a predetermined angle, The rotary shaft 110 and the actuator of the door 100 to absorb the shock generated when the door 100 is rotated at a predetermined angle and to compensate for the angular tolerance of the door 100 and the actuator 200. Vehicle air conditioning apparatus, characterized in that the elastic member 150 is installed between the rotating shaft 201 of the 200. The method of claim 1, A coupling groove 111 is formed at one end of the rotation shaft 110 of the door 100 so that one end of the rotation shaft 201 of the actuator 200 can be inserted and coupled thereto. The outer circumferential surface of the elastic member 150 is coupled to the inner circumferential surface of the coupling groove 111 by the first coupling means, and the inner circumferential surface is detachably coupled to the actuator via the rotating shaft 201 and the second coupling means of the actuator 200. Vehicle air conditioner, characterized in that the. The method of claim 2, The first coupling means is an air conditioning apparatus for a vehicle, characterized in that the outer peripheral surface of the elastic member 150 is formed integrally with the inner peripheral surface of the coupling groove 111 through a double injection. The method of claim 2, The first coupling means is a vehicle air conditioning apparatus, characterized in that the coupling is formed by processing the serration (153, 112) on the outer peripheral surface of the elastic member 150 and the inner peripheral surface of the coupling groove 111, respectively. The method of claim 2, The second coupling means is a vehicle air conditioner, characterized in that the detachable coupling to each other by forming a gear portion (151,202) on the inner circumferential surface of the elastic member 150 and the outer circumferential surface of the rotating shaft (201) of the actuator (200). The method of claim 2, Between the outer circumferential surface and the inner circumferential surface of the elastic member 150 is formed a plurality of shock absorbing grooves 152 spaced apart at regular intervals in the circumferential direction to smoothly absorb the shock generated during the rotational drive of the door 100. Vehicle air conditioner, characterized in that. The method of claim 4, wherein The outer circumferential surface of the elastic member 150 is provided with a groove portion 154 formed by omitting the serration 153 by a predetermined width, and the serration 112 is omitted by the predetermined width on the inner circumferential surface of the coupling groove 111. The air conditioner for a vehicle, which is formed by being provided with a protruding surface portion 113 inserted into the groove portion 154. The method of claim 1, The driving angle θ2 of the actuator 200 is set to be larger than the rotation angle θ1 of the door 100.

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