KR20000034121A - One door system for blowing conversion of vehicle air conditioner - Google Patents

Abstract

PURPOSE: An one door system for blowing conversion of vehicle air conditioner is provided to simplify the assembly of the door assembly by providing a single revolving door which is formed cylindrically and selectively blowing air from the main duct to a branch duct. CONSTITUTION: An one door system for blowing conversion of vehicle air conditioner for blowing through a plurality of multi-divided branch ducts(10,11,12) connected to a ventilator, a defroster, and a floor duct from a main duct(3), includes a revolving door(20) mounted between the branch ducts and the main duct and opened at least two parts for selectively connecting at least one branch duct to the main duct by revolving with reference to a rotation shaft, and a driving element for rotating the rotary type door, wherein the rotary type door is preferably formed in the shape of cylinder and the driving element includes a circular gear connected to the rotation shaft of the rotary type door, and a connecting element for mechanically connecting the cylindrical revolving door to a blowing conversion lever.

Description

Ventilation Door Switch Assembly for Automotive Air Conditioning Equipment

The present invention relates to a blowing assembly door assembly of the vehicle air conditioner for controlling the air blowing direction of the air blown on the duct of the vehicle air conditioner, in particular, a car air conditioning that can blow air by dividing the air in multiple by one cylindrical door A blowing assembly door assembly of the apparatus.

A vehicle air conditioner is a device that cools or heats a vehicle interior by introducing air from the outside to heat or cool the air and blow it into the interior of the vehicle. Ventilation switching doors for blowing are provided.

In automotive air conditioners, heated or cooled air is blown through a duct, which normally serves as a case, which in turn diverges from the duct and has branch outlets (eg ventilators) having outlets in each part of the room. ), Defroster and floor duct). Therefore, the blowing switch doors mentioned at the beginning are usually installed between the duct and the branch duct.

1 of the accompanying drawings is a schematic diagram showing a blower path of a vehicle air conditioner installed with a conventional blower switching door.

As shown, the air blowing of the air conditioner, the indoor air or outdoor air is selectively introduced by the blower fan (2) according to the opening and closing selection of the internal / outdoor air conversion door (1), the evaporator (4) along the duct (3) Air passing through the evaporator 4 selectively passes through the heater core 6 according to the opening / closing selection of the heating selection door 5, and then the air switching doors 7, 8, and 9. According to the selection of opening and closing of the door assembly consisting of a branch to each branch duct (10) (11) (12) through the ventilator 13, the defroster (14) or the floor duct (15) It is made in such a way that it is blown.

In the above blowing process, the conventional blowing switching doors (7) (8) (9) for branching the air discharged from the duct (3) into the respective branch ducts (10) (11) (12), As shown in the enlarged cross-sectional view of FIG. 2, the axis of rotation is hinged to the wall of the duct 3. And, as shown in Fig. 3, each of the doors has a cam (13) having a substantially disc shape interlocked by an operation lever on the instrument panel, and a pin (for each slit 13a formed in the cam 13). 14a) is provided with a drive means including a plurality of arms (14) (Arm) 14 for linking the rotary shafts of the door for switching air blowing. For reference, the slit 13a of the cam 13 is set differently in curvature or radius of curvature with respect to the rotation center so that the doors can be selectively opened and closed according to the rotation angle of the cam 13 according to the blowing mode.

In such a configuration, each of the conventional doors 7, 8, and 9 for switching the airflow is each arm 14 by the rotation of the cam 13 which is rotated by the operation of the operation lever instructing the blowing mode. As shown in FIG. 2, the branch ducts 10, 11, 12 are selectively opened while being rotated integrally with each other so that the air blown from the duct 3 is blown to each part of the room.

However, the above-mentioned blower switching doors of the conventional vehicle air conditioner have to be installed for each branch duct and have a driving means individually, thereby increasing the number of required parts and the structure is complicated. In addition, durability is also poor. Therefore, the airflow switching doors of the conventional vehicle air conditioner not only raise the manufacturing cost for the air conditioner but also cause a problem of increasing the assembly labor.

Therefore, the present invention can eliminate the above problems caused by the airflow switching doors of the conventional vehicle air conditioner, and the air of the duct can be divided into multiple branches and blown by multiple branch ducts with only one rotary door. It is an object of the present invention to provide a door assembly for switching the air conditioner of an automotive air conditioner, thereby reducing the assembly labor for the vehicle air conditioner and reducing the manufacturing cost.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic diagram showing a blowing path of a vehicle air conditioner equipped with a conventional blowing switching door.

Figure 2 is a cross-sectional view showing the internal structure of the air blowing switch door assembly of a conventional vehicle air conditioner.

Figure 3 is a front view showing a door driving means for switching the blowing of FIG.

Figure 4 is a cross-sectional view showing the structure of the ventilation assembly door assembly of the vehicle air conditioner according to an embodiment of the present invention.

5 is a perspective view of a ventilation switching door of the vehicle air conditioner according to an embodiment of the present invention.

Figure 6 is a perspective view of the airflow switching door according to another embodiment of the present invention.

Figure 7 is a front view showing the drive means of the airflow switching door of the vehicle air conditioner according to the present invention.

Figure 8 is a comparative view showing the operation of the conventional air blower door assembly for switching the air conditioner according to an embodiment of the present invention.

Figure 9 is a comparison view showing the operation of the conventional air blowing control door assembly of the air conditioner according to another embodiment of the present invention.

Figure 10 is a comparison view showing the operation of the conventional air blowing control door assembly of the air conditioning apparatus according to another embodiment of the present invention.

<Description of the code | symbol about the principal part of drawing>

3: duct 5: heating selection door

6: heater core 10, 11, 12: branch duct

20: blower switching door

The present invention proposed with the object as described above, to blow the air blown from the evaporator or the heater unit by multi-splitting the duct from the duct to a plurality of branch ducts connected to the ventilator, the defroster and the floor duct in accordance with the blowing control mode. And a rotating body installed between the duct and the branch ducts and selectively communicating at least one of the ducts and the branch ducts while at least two portions of an outer circumferential surface are opened to rotate about a longitudinal axis of rotation. And a driving means for rotating the door.

Preferably, the rotatable door is cylindrical.

Preferably, the driving means includes a circular gear directly connected to the rotating shaft of the door, and an operation means for mechanically connecting the circular gear and the airflow switching lever.

In addition, the driving means, it is preferable to include an actuator which is operated by receiving power by the operation lever.

The operating means is a gear for increasing the rotation ratio, in which the teeth formed on the outer circumference are rotated in engagement with the circular gear teeth to rotate the circular gear. And a cam having a slit groove formed at one side of the rotation ratio increasing gear and fitted with a pin integrated with the rotation ratio increasing gear and having a curvature and a radius of curvature changed in multiple stages with respect to the rotation center thereof. Preferably, at least one of the duct and the branch duct is in communication with the duct and the branch duct while being rotated in multiple stages according to the degree of rotation angle of the cam and at the same time as the rotation angle increased by the rotation ratio increasing gear. .

The operating means, one end is integrated with the rotary shaft of the cam and the other end is connected to the blowing switching lever, including an arm that rotates with the cam, the operating force of the blowing switching lever for the arm and the cam and the rotation ratio adjustment Preferably, the gears are sequentially transmitted to the circular gears.

Hereinafter, the functions and operations of the above components will be described in more detail with reference to the accompanying drawings.

In the description of the present embodiment, the same reference numerals are used for the configurations of the present invention that are the same as the prior art described at the outset, and only the parts that are improved so as not to overlap with the prior art for clarity will be mainly described.

First, referring to the accompanying drawings, Figure 4 is a cross-sectional view showing the structure of the air conditioner door switching assembly of the vehicle air conditioner according to an embodiment of the present invention, Figure 5 is a ventilation of the vehicle air conditioner according to an embodiment of the present invention 6 is a perspective view of a switching door, and FIG. 6 is a perspective view of a ventilation switching door according to another embodiment. And, Figure 7 is a front view showing the drive means of the air flow switching door assembly of the vehicle air conditioner according to the present invention, Figures 8, 9 and 10 are one embodiment, another embodiment and another embodiment of the present invention, respectively Compared with the conventional operation of the air flow switching door assembly of the vehicle air conditioner according to the example.

As shown in Figure 4, the configuration of the air blowing door switching assembly of the air conditioner according to an embodiment of the present invention, the duct for guiding the air blowing from the blower with the evaporator or the heater core (6) ( 3) and a ventilation switching door 20 provided between the plurality of branch ducts 10, 11, 12 for branching the duct 3, and driving means for driving the door (Fig. 7). As shown).

The duct (3) has a case function as a frame for mounting each component of the air conditioning apparatus related to the blowing and the induction function for guiding all of the air blown by the blower to the plurality of branch ducts (10) (11) (12). It is also combined, the ventilation switch door 20 according to the present invention is installed between the duct (3) and the branch ducts (10) (11) (12).

The rotating body type door 20 for airflow switching according to an embodiment of the present invention is a cylindrical door having openings 20a opened at at least two portions of the outer circumference, as shown in a perspective view of FIG. 5, The longitudinal center is the axis of rotation so that both ends are fixed to the wall of the duct 3. An elastic sealing member, such as a sponge 20b, is attached to the outer circumference as an airtight member to enhance the sealing effect. The openings 20a are suitably set according to the adjoining angles between the duct 3 and the branch ducts 10, 11, 12 that are in contact with each other, so that each branch duct 10, 11 is rotated as it is rotated. (12) can be selectively communicated with the duct (3).

The structure of the air flow switching door 20 as described above may be variously changed according to the specifications of the air conditioning apparatus. For example, the cross-sectional diameter may be added or subtracted, and the shape may also be changed to a shape in which the outer periphery is angled, that is, the cross-section is polygonal.

On the other hand, in Fig. 6, the opening 21a is flat as the air flow switching door 21 according to another embodiment. This takes a form in which unnecessary parts of both sides of the opening are cut out of the airflow switching door 20 of FIG. 5, and the action and effect are the same as the door 20 of FIG. 5.

The above-described blower switching door is provided with a driving means on the outer wall of the duct, which can be seen that much simpler than the conventional blower switching door, as shown in FIG. That is, the driving means, the circular gear 30 is coupled to the rotary shaft of the air flow switching door 20, the fan gear 31 having a tooth that the outer peripheral teeth of the circular gear 30 inscribed, the fan gear 31 A fan-shaped cam 32 having a slit 32a into which a pin 31a is installed, and one end is coupled to a rotation shaft of the cam 32 and the other end is linked to an operation lever (not shown). It is comprised by the arm 33 which rotates the cam 32 integrally, rotating by the said operating lever. Here, the circular gear 30 serves as a drive gear of the blower switching door as a normal gear. These arrangements can be further simplified by replacing a conventional actuator (not shown) operated by a blow-over lever (not shown) power source.

The fan gear 31 is a rotational increase gear, which rotates by engaging the circular gear 30. The circular gear 30 is inscribed on an inner circumference thereof, and the circular gear has a relatively large rotation angle in inverse proportion to a radial ratio. Rotate the gear. In other words, the gear 31 functions to increase the rotation ratio of the circular gear 30.

The cam 32 is a fan-shaped cam which rotates the fan gear 31 within a set range. A slit 32a is formed on an outer circumference thereof, so that the pin of the fan gear 31 is formed on the slit 32a. 31a) is inserted. The slit 32a changes the curvature and the radius of curvature by the number of blow setting modes with respect to the center of rotation in terms of length, and the amount of change is the duct 3 in the duct 3 and the branch ducts 10 and 11. Adjacent angles between 12 are set in consideration. For example, if the setting mode is five steps, the slit 32a has at least five curvatures and a radius of curvature in the longitudinal direction. Accordingly, the cam 32 rotates the fan gear 31 in the same number of steps as the step of changing the radius of curvature of the slit 32a while rotating.

The arm 33 rotates the cam 32 while interlocking with the operation lever in a normal link form.

As shown in FIG. 8, the air assembly of the present invention is combined with the functions of the above components, and thus the duct 3 and the branch ducts 10 and 11 (for each mode) are illustrated in FIG. 8. Selectively communicating at least one of 12).

The operation of each mode will be described with reference to FIGS. 1 and 8.

For reference, FIG. 8 is a comparison diagram of a blowing path by the conventional three-door switching system (Three door system) and a blowing path by the one-winding system of the present invention (One door system). Let's look briefly at this.

First, in the vent mode set at the time of cooling or ventilation, the blower switching door 20 connects the duct 3 and the ventilator side branch duct 10 so that the blower does not normally pass through the heater core 6. Air is blown through the ventilator 13 to the top of the vehicle interior. On the other hand, in the vent mode drawing, the heater selection door 5 is blocking the passage of the heater core 6 side, which is controlled by separate operation means, not shown.

In the bi-level mode (B / L mode), which is set when the cooling and heating are mixed, the door 20 opens the duct 3, the ventilator side branch duct 10, and the floor duct side branch duct 12. In communication with each other, the air blown by cooling in the evaporator or heated in the heater core 6 is blown to the upper and lower parts of the vehicle interior. For reference, the heating selection door 5 of the drawing is a state in which the upper and lower portions of the heater core 6 are half open.

In the floor mode, which is mainly set only at the time of heating, the door 20 communicates the duct 3 with the branch duct side branch duct 12 and opens a part of the inlet port of the defroster side branch duct 11. In general, most of the air heated by the heater core 6 is blown to the lower part of the vehicle interior, and the remaining part is blown to the windshield glass side.

In the Mix Mode set at the time of heating and defrosting, the door 20 communicates with the duct 3, the floor duct side branch duct 12, and the defroster side branch duct 11 at the same time. The hot air from the core 6 is blown to the lower part of the vehicle interior and the windshield glass.

In the defrost mode, which is usually set only when defrosting the windshield glass, the door 20 communicates only with the duct 3 and the defroster side branch duct 12 to be heated in the heater core 6. All air is blown through the windshield glass only.

As described above, the blower switching door assembly of the vehicle air conditioner of the present embodiment can control the blowing direction of the air conditioner for each mode by using only one blower switching door 20.

On the other hand, Figures 9 and 10 show the operation structure of the air flow switching door assembly of the vehicle air conditioning apparatus according to another embodiment and another embodiment, each of the blowers are just the duct (3) and branch ducts (10) 11) by varying the structure, that is, the size and the opening portion (40a, 50a) of the airflow switching doors 40, 50 according to the adjacent angle between 12, the purpose and technical member Same as the embodiment. In particular, the ventilation switch door assembly of the vehicle air conditioner of Figure 9 is applied when the duct (3) is in contact with the direction perpendicular to the branch ducts (front direction when viewing the drawing), the opening portion 40a is a blower switch It is formed on the outer circumference and side (front view of the drawing) of the dragon door 40.

As such, the air flow switching door assembly of the air conditioner of the present embodiment is not limited to the adjacent angle or size between the duct and the branch duct, and can be applied by changing only the size and shape of the air switching door and the position of the opening. Applicable to all models.

As described above, the blower switching door assembly of the vehicle air conditioner of the present invention, in the blowing air by dividing the air of the duct into each branch duct multiple by setting mode, there is only one blower rotating body type door (20) ) Only. Therefore, since the configuration is very simple as compared with the prior art, it is possible to reduce the manufacturing cost and assembly labor for the air conditioning apparatus.

The present invention can be variously modified and implemented by those skilled in the art without departing from the scope of the claims.

Claims (5)

The air blown from the evaporator or the heater unit is divided into the plurality of branch ducts (10) (11) (12) connected to the ventilator, the defroster and the floor duct from the duct (3) according to the blow control mode. Rotating door 20 is installed between the duct and the branch duct, and at least two portions of the outer circumferential surface is opened and rotates about the axis of rotation of the longitudinal center to selectively communicate at least one of the duct and the branch duct 20 And a driving means for rotating the door. The method of claim 1, Blowing door switching assembly of the vehicle air conditioner, characterized in that the rotatable door is cylindrical. The method according to claim 1 or 2, The drive means, A circular gear 30 directly connected to the rotating shaft of the door, And an actuating means for mechanically connecting the circular gear and the airflow switching lever to the airflow switching door assembly of the vehicle air conditioner. The method according to claim 1 or 2, The drive means, And a actuator for supplying power by the blower switching lever. The method of claim 3, wherein The operating means, The gear formed on the outer circumference rotates the circular gear by being engaged with the teeth of the circular gear, and the rotation radius is relatively large compared to the circular gear, and the rotation ratio increasing gear 31 for increasing the rotation angle of the circular gear and , A cam 32 having a slit groove formed at one side of the rotation ratio increasing gear and integrated with the rotation ratio increasing gear and having a slit groove in which the curvature and the radius of curvature are changed in multiple steps with respect to the rotation center thereof, and one end of the cam It is integrated with the rotating shaft of the other end is connected to the blowing switching lever, and includes an arm 33 that rotates with the cam, The door is rotated in multiple stages according to the degree of rotation angle of the cam and at the same time rotates at the rotation angle increased by the rotation ratio increasing gear, selectively communicating at least one of the duct and the branch duct. Door assembly for blowing air of the vehicle air conditioner.