KR200338932Y1 - Sealing structure of air intake box - Google Patents

Abstract

The present invention relates to an air intake box of a blower for an air conditioner for an automobile, and reduces the labor required for attaching a seal member and prevents air leakage in the air inlet mode. It is an object to provide a sealing structure of a box.

The present invention to achieve the above object, the outside air inlet (4) and bet inlet (5); An inlet door 6; In the sealing structure of the air intake box (2) comprising a lower opening (7),

The main wall (15) of the inlet door (6) has a first stop (16) formed at one end and a second stop (17) formed at the other end; The air intake box 2 has a groove 20 formed at one side of the outside air inlet 4 and a stop end 18 formed at the other side of the outside air inlet 4. It features.

In addition, the circumferential wall 15 of the inlet door 6 has a taper shape, the thickness of which gradually increases from the first stopper 16 to the second stopper 17. do.

Description

Sealing structure of air intake box {SEALING STRUCTURE OF AIR INTAKE BOX}

The present invention relates to an air intake box of a blower for an automotive air conditioner, and more particularly, a main wall of an inlet door has a taper shape, and one end of the main wall and Each stop end is provided with a stopper, and an intake box is formed with a groove, thereby reducing the number of labors due to the attachment of the seal member, and an air intake box that can prevent air leakage in the air inlet mode. It relates to the sealing structure of the.

A vehicle air conditioner is a device that cools and heats an interior of an automobile by selectively introducing outside air or bet, and then heating or cooling the air to blow into the interior of the vehicle. A blower unit (1) for introducing and blowing air into the interior of a vehicle is essentially provided. The vehicle air conditioner introduces outside air or bet into the centrifugal air flow generated by the centrifugal fan of the blower as it rotates, and then blows the air through the heat exchanger to the interior of the vehicle to cool and heat the interior of the vehicle. .

1 shows a cross-sectional view of a conventional blower 1 for a vehicle air conditioner. As illustrated, the blower unit 1 includes an upper air intake box 2 and a lower scroll case 3.

The upper air intake box 2 includes an outside air inlet 4 and an inside air inlet 5; An inlet door 6 which is rotatably installed at the lower end of the outside air inlet 4 and the inside of the air inlet 5 to selectively open and close the outside air inlet 4 and the internal air inlet 5; ; It consists of a lower opening 7 in communication with the scroll case 3.

The lower scroll case 3 includes: an upper opening 8 in communication with the air intake box 2; An air discharge port 9 on one side through which air introduced from the air intake box 3 is discharged to an air conditioning case (not shown) provided with a heat exchanger; Internal motor (Motor) 11 and the centrifugal fan 10 for forcibly introducing air by the rotational power of the motor.

When introducing the outside air in the conventional blower 1 configured as described above (outdoor air induction mode), the inlet door 6 rotates to the right in the drawing to block the inside air inlet 5 and at the same time the outside air inlet. (4) is opened and external air is forcibly introduced from the outside air inlet port 4 by the rotation of the centrifugal fan 10, and is discharged to the air outlet port 9 on the side of the scroll case 3. The discharged air is heated or cooled while passing through a heat exchanger in an air conditioning case (not shown) connected to the air discharge port 9 and supplied to the interior of the vehicle.

On the other hand, when introducing the bet (introduction mode), the inlet door 6 is rotated to the position shown in FIG. 1 to block the outside air inlet 4 and at the same time to open the bet inlet 5. By the rotation of the centrifugal fan 10, the vehicle interior air is forcibly introduced from the bet inlet 5.

As described above, the inlet door 6 serves to switch to the external air inlet mode or the internal air inlet mode, and the inlet door 6 may be a flat type, a dome type, or the like. Is being used.

In the air intake box provided with the inlet door of the flat type, the inlet door of the flat type rotates around the pivot shaft to selectively open and close the outside air inlet and the inside air inlet, and the air intake box provided with the dome type inlet door. In, the inlet door of the partial cylindrical or dome shape rotates about the rotation shaft to selectively open and close the outside air inlet and the inside air inlet.

The flat type inlet door has a disadvantage in that air leakage is caused by outside air inflow due to vibration generated during driving of the vehicle or pressure of the driving wind introduced from the outside. Recently, dome-type inlet doors have been used a lot.

If the interior air-conditioning mode is maintained during the cooling and heating of the vehicle, the indoor air that has already been heat-exchanged is recycled, thereby reducing the cooling and heating load. Therefore, the air induction mode is more efficient than the air induction mode, and if the air is introduced in the air induction mode, the cooling and heating efficiency is reduced.

In the dome type inlet door 6 which is generally applied, rubber or the like is generally used at the part where the inlet door 6 and the air intake box 2 abut in order to prevent unwanted inflow of external air in the air inlet mode. The sealing structure of a method of attaching a separate seal member 12 made of a material is adopted.

That is, the existing inlet door 6 is attached to the part where the inlet door 6 and the air intake box 2 abut or molded by double injection, thereby compressing the seal member 12. The structure which prevents air leakage is adopted.

However, this method requires a lot of labor because the seal member 12 must be manually attached or molded by double injection, and the air leakage phenomenon is caused by the repulsive force of the seal member 12 against compression. There was a problem that occurred.

The present invention has been devised to solve the above problems, the main wall of the inlet door (tape) to have a taper (taper) shape, each end of the main wall and the other end to form a stop jaw, air intake box By forming a groove inside the air intake box, the work man-hour of the seal member is reduced, and the air intake box can be prevented from air leakage in the air inlet mode. It is an object to provide a sealing structure.

1 is a cross-sectional view of a conventional blower for a vehicle air conditioner,

2 is a cross-sectional view of the air intake box of the blower according to the present invention;

3 is a cross-sectional view of the air intake box according to the present invention in the air preparation mode;

4 is a cross-sectional view when the inlet door of the air intake box according to the present invention is rotated.

<Explanation of symbols for the main parts of the drawings>

1 ... Blower Unit, 2 ... Air Intake Box

(Air Intake Box),

3 ... Scroll Case, 4 ... Outdoor Inlet,

5 ... Inlet door, 6 ... Inlet Door,

13 pivot shaft, 14 side walls,

15 ... the main wall, 16 ... the first stop,

17 ... second stop, 18 ... stop end,

20 ... Groove.

In order to achieve the above object, the present invention, an external air inlet and the internal air inlet formed on the front and rear of the upper portion; An inlet door composed of a rotation shaft, a side wall, and a main wall; In the sealing structure of the air intake box including a lower opening in communication with the scroll case (Scroll Case),

The circumferential wall of the inlet door may include a first stopper formed at one end thereof; A second stopper formed at the other end;

The air intake box may include: a groove formed at one side of the outside air inlet and configured to seat the first stopper in the air inlet mode; It is formed on the other side of the outside air inlet, characterized in that it has a stop end in contact with the second stop in the in-air air filling mode.

In addition, the main wall of the inlet door is characterized in that it has a taper (Taper) shape that becomes thicker gradually from the first stop to the second stop.

In addition, the maximum thickness of the tapered shape is characterized in that the thickness of the main wall near the second stop and the stop end of the air intake box is in complete contact with each other in the internal air filling mode.

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 2 to 4.

The same code | symbol is used about the same structure as the prior art, and repeated description is abbreviate | omitted.

Figure 2 shows a cross-sectional view of the air intake box according to the present invention.

As shown, the air intake box 2 according to the present invention is composed of an outside air inlet 4 and an inside air inlet 5, an inlet door 6, and a lower opening 7.

The external inlet port 4 and the internal air inlet port 5 are respectively formed on the front and rear surfaces of the upper portion of the air intake box 2, and the inlet door 6 has an external air inlet port 4 and an internal air inlet port. It is rotatably mounted on the lower part of the inlet 5, and the lower opening 7 is in communication with the scroll case 3.

The inlet door 6 has a partial cylindrical shape and includes a pivot shaft 13, side walls 14, and a circumferential wall 15.

The rotating shaft 13 passes through the left and right sides of the air intake box 2 and is rotatably coupled.

One end of the side wall 14 is integrally formed with both ends of the pivot shaft 13, and the other end is integrally formed with the main wall 15.

The circumferential wall 15 has a first stop 16 formed at one end and a second stop 17 formed at the other end. The second stop 17 is formed from the first stop 16. It is desirable to have a tapered shape (t1 < t2), the thickness of which gradually becomes thicker.

Further, the tapered maximum thickness t2 of the circumferential wall 15 is formed by the circumferential wall 15 near the second stopper 17 and the stop end 18 of the air intake box 2 described later. It is preferred that the thickness be in full contact with each other in mode (see FIG. 3).

The air intake box 2 is configured to include a groove 20, a stop end 18, and a seating portion 19.

The groove 20 is formed at one side of the outside air inlet 4, and seats the first stopper 16 in the internal air inlet mode.

The stop end 18 is formed on the other side of the outside air inlet 4, and is in contact with the second stop jaw 17 in the internal air inlet mode.

The seating portion 19 is formed on one side of the bet air inlet 5 and contacts the second stopper 17 in the external air inlet mode.

When explaining the operation of the present invention configured as described above with reference to Figures 2 to 4 as follows.

The selection of the internal air filling mode or the external air filling mode is determined by the rotation of the partial cylindrical inlet door 6.

In the inside air inlet mode, the inlet door 6 rotates to the position shown in FIG. 2 to block the outside air inlet 4 and only the inside is introduced into the air intake box 2.

At this time, the first stop 16 of the inlet door 6 is seated in the groove 20 of one side of the outside air inlet 4, and the second stop 17 of the inlet door 6. The silver comes into contact with the stop end 18 of the other side of the outside air inlet 4 (see FIG. 2).

In addition, since the circumferential wall 15 of the inlet door 6 has a tapered shape that gradually increases in thickness from the first stopper 16 to the second stopper 17, the second stopper At the maximum thickness near 17, the circumferential wall 15 and the stop end 18 come into close contact with each other (see Fig. 3).

Accordingly, the first stop 16 is seated on the groove 20, the stop end 18 and the second stop 17 are in contact with each other, and the stop end 18 and the maximum thickness of the groove 20 are in contact with each other. As the circumferential wall 15 is completely in contact with each other, it is possible to effectively prevent the inflow of outside air in the air-inflated mode.

On the other hand, the inlet door 6 can be smoothly rotated without being disturbed by the circumferential wall (15). This is because the stop end 18 and the circumferential wall 15 are in close contact with each other in the in-air filling mode, but the circumferential wall 15 has a tapered shape, so that the stop end 18 and the stop end 18 are rotated when the inlet door 6 is rotated. This is because the circumferential wall 15 is separated and no friction occurs (see FIG. 4).

According to the present invention of the above-described configuration, the prevention of inflow of outside air in the internal air induction mode includes the seating of the first stop in the groove, the contact between the stop end and the second stop, the stop end and the maximum thickness. It is achieved by close contact with the circumferential wall.

Therefore, there is an effect that can prevent the air leakage (Air Leakage) phenomenon that can occur in the internal air filling mode without attaching or molding a separate seal (Seal). In addition, there is an effect that can reduce the labor required to attach the seal member manually by hand or molding by double injection.

Claims (3)

Outside air inlet 4 and inside air inlet 5; An inlet door 6 composed of a rotation shaft 13, a side wall 14, and a circumferential wall 15; In the sealing structure of the air intake box (2) of the blower for a vehicle air conditioner comprising a lower opening (7) in communication with the scroll case (3), The circumferential wall 15 of the inlet door 6 includes a first stop 16 formed at one end thereof; It has a second stopper 17 formed at the other end, The air intake box (2) is formed on one side of the outside air inlet (4), the groove (Groove, 20) for seating the first stop (16) in the air inlet mode; Sealing structure of the air intake box, which is formed on the other side of the outside air inlet 4 and has a stop end 18 in contact with the second stop jaw 17 in the inner air inlet mode. . The method of claim 1, The main wall 15 of the inlet door 6 has a taper shape, the thickness of which gradually increases from the first stop 16 to the second stop 17. Sealing structure of the intake box (2). The method of claim 2, The maximum thickness t2 of the circumferential wall 15 of the inlet door 6 is such that the circumferential wall 15 near the second stop 17 and the stop end 18 of the air intake box 2 are internally indented. Sealing structure of the air intake box (2) characterized in that the thickness is in close contact with each other in the mode.