JP2532876Y2 - Heater unit door structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door structure of a heater unit .

[0002]

2. Description of the Related Art In an air conditioner for an automobile, various air distribution doors are disposed inside the air conditioning apparatus in order to realize various air distribution modes, and are controlled according to each air distribution mode. Has become. FIG. 7 is a schematic sectional view of a heater unit in a conventional automobile air conditioner. The heater unit 2 shown in FIG. 7 heats the vehicle interior air or outside air selectively taken in by an intake unit (not shown) by an appropriate amount by the heater core 4 and adjusts the temperature to a predetermined temperature. It is for distributing air into the passenger compartment through the. In order to adjust the amount of air that passes through the heater core 4 and is heated, a mix door 12 is rotatably mounted on the front surface of the heater core 4. The amount of bypass air is controlled. Various air distribution ducts 6, 8,
Reference numerals 10 are respectively referred to as a differential duct 6, a vent duct 8, and a foot duct 10, and each communicates with various outlets in the vehicle interior. A differential door 14, a vent door 16 and a foot door 18 are rotatably mounted on these air distribution ducts, respectively, so as to control the air distribution amount sent into each air distribution duct. In the heater unit 2 of such an air conditioner for an automobile, in order to realize various air distribution modes, the air distribution doors 14, 16, and 18 need to be rotated to a fully open position, a fully closed position, or an intermediate position, respectively. There is. For example, in the bi-level (B / L) mode in which air is simultaneously distributed to the upper body position and the foot position of the occupant, the differential door 14 is set to the fully closed position, and the vent door 16 and the foot door 18 are rotated to the intermediate position. There is a need. In a differential foot (D / F) mode in which wind is simultaneously directed toward the windshield and the feet of the occupant, the vent door 16 is set to the fully closed position, and the differential door 14 and the foot door 1 are set.
8 is rotated to an intermediate position.

[0003]

In such a conventional heater unit 2 of an air conditioner for a vehicle, in order to realize various air distribution modes, the air distribution doors 14, 16, 18 are not fully opened or fully closed. You may need to set it to an intermediate position. For this reason, the air distribution ratio tends to vary, and the door set at the intermediate position may vibrate due to vibration of the vehicle body and generate noise. In addition, with the door structure adopted for the heater unit of the conventional structure,
For example, the opening area of the vent duct 8 cannot be made large, and the passage resistance increases, which may cause noise.
In the conventional configuration, the only way to increase the opening area of the vent duct 8 is to increase the size of the heater unit, which may be against the demand for miniaturization as an automotive air conditioner installed in a narrow space. In addition, Japanese Utility Model Publication No. 63-3728
No. 4 discloses an air conditioner for automobiles in which the opening area of a vent duct is simply increased, but in order to realize each air distribution mode, it is necessary to set an air distribution door at an intermediate position. However, there still remains a problem that noise due to variation in air distribution ratio and vibration may occur.

The present invention has been made in order to effectively solve the above-mentioned problems of the prior art, and it is possible to increase the duct passage without increasing the size of the device, and to reduce the ventilation resistance. It is another object of the present invention to provide a door structure of a heater unit which has low noise and does not cause a variation in air distribution ratio.

[0005]

In order to achieve such an object, the present invention provides a vent duct opening of a vent duct.
Part and the differential duct opening of the differential duct are provided close to each other, and the vent duct opening and the differential duct opening
The foot duct opening of the foot duct at a position away from
Also opened, air distribution door is have you <br/> the heater unit of an automotive air conditioner which kicked <br/> set to open and close control in each of these openings, the vent duct opening casement formula a pair of air distribution door is mounted for rotation, one of the doors of the pair of air distribution door, by the rotation of the door, the instrumentation dressed to open and close control the defroster duct <br/> opening It is characterized by being.

[0006]

According to the door structure of the heater unit according to the present invention, the vent duct opening of the vent duct is opened and closed by a pair of double- opening air distribution doors. The area can be increased. For this reason, when you want a large amount of airflow,
For example, if a large amount of low-temperature, high-speed air is blown out
Is preferred because it gives a feeling of cooling
Sometimes, increasing the amount of opening of a pair of air distribution doors
The passage resistance is reduced ,
Cold air is obtained. Also, if you do not need much airflow
For example, when the bi-level mode of head cold foot fever,
Only the damper opens and blows air with
It will be cool. Furthermore, Bentoda without increasing the unit
Since the size of the opening can be increased, the vehicle space can be effectively used by downsizing the device. In addition,
The opening and closing of the air duct is performed by a pair of double-opening air distribution doors. One of the pair of air distribution doors is turned to a fully closed position, and the other is turned to a fully open position. It is possible to set the amount of air distribution to the first duct to an intermediate value without rotating the intermediate position to an intermediate position.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a heater unit according to an embodiment of the present invention will be described.
It will be described in detail door structure of the door. Figures 1-5
FIG. 6 is a schematic cross-sectional view of a door structure of a heater unit according to an embodiment of the present invention, and FIG. 6 is a perspective view of a main part of a double-sided air distribution door according to another embodiment of the present invention. The embodiment shown in FIGS. 1 to 4 shows a case in which the door structure according to the present invention is applied to a vent door and a differential door of a heater unit 20 in an automobile air conditioner. The heater unit 20 is provided with a heater core and a mixing door (not shown). Air that has passed or bypassed the heater core is mixed in the mixing chamber 22 to control the temperature, and various air distribution ducts 24, 26,
The air is distributed to the vehicle interior through 28. The air distribution duct 24 is referred to as a differential duct and communicates with a vent outlet that distributes air toward the windshield and the side glass. The air distribution duct 26 is called a vent duct,
It communicates with a vent outlet that distributes cool air toward the upper body of passengers in the vehicle. The air distribution duct 28 is called a foot duct, and communicates with a foot outlet that blows out warm air toward the feet of the occupant in the vehicle compartment.

[0008] Foot duct opening 3 of foot duct 28
At 0, a foot door 32 is rotatably mounted so as to open and close the foot duct opening 30. Also, in the vent duct opening 34 of the vent duct 24,
A pair of double-sided air distribution doors 36 and 38 are rotatably mounted. As shown in FIG. 2, when the vent duct opening 34 is controlled to the fully closed position, the air distribution doors 36 and 38 have their ends pressed against the support posts 35 and press the vent duct 2.
6 to prevent the flow of wind. Prop 35
Is to connect the vent duct opening 34 with two openings 34a, 3a.
4b. One of the pair of double-sided air distribution doors 36 and 38 controls opening and closing of the differential duct opening 40 of the differential duct 24. That is, as shown in FIG. 1, the air distribution ducts 36 and 38 are opened so that the vent duct opening 34 is fully opened.
Is controlled by the air distribution door 38, the differential duct opening 40 is completely closed. As shown in FIG. 2, the air distribution is performed so that the vent duct opening 34 is fully closed. When the rotation of the ducts 36 and 38 is controlled, the air distribution door 38 fully opens the differential duct opening 40. Therefore, the air distribution door 38 is configured to serve as both a vent door and a differential door. An auxiliary differential door 42 is rotatably mounted in the differential duct 24. The auxiliary differential door 42 is, as shown in FIGS.
The rotation is selectively controlled to a position in the differential duct where the airflow resistance does not occur, and a position in the differential duct where the airflow resistance does not occur, as shown in FIG.

Next, the movement of each door according to each air distribution mode in such an air conditioner for a vehicle will be described. The air distribution mode of the air conditioner for automobiles includes a vent mode in which cold air is directed toward the upper body of the passenger in the cabin, a differential mode in which wind is directed toward the windshield and side glass, and a distribution mode in which the air is directed toward the feet of the passenger. A foot mode that performs wind, a bi-level (B / L) mode that simultaneously distributes air to the upper body position and foot position of the occupant, and a differential foot (D) that simultaneously distributes wind toward the windshield and the feet of the occupant
/ F) mode. In the vent mode, as shown in FIG. 1, the pair of double-sided air distribution doors 36 and 38 fully open the vent duct opening 34, and the differential duct opening 40 is closed by the air distribution door 38. The foot duct opening 30 is also closed by the foot door 32. In this state, the vent duct opening 34 is fully opened, and all the air in the heater unit is distributed toward the upper body of the occupant through the vent duct. Next, in the differential mode, the foot duct 32 closes the foot duct opening 30 as shown in FIG.
The rotation of the opening 38 is controlled so that the vent duct opening 34 is fully closed. As a result, the differential duct opening 40 is in the fully open position. In addition, the rotation of the auxiliary differential door 42 is controlled to a position where the ventilation resistance in the differential duct 24 does not increase. In this state, all the air in the heater unit is distributed to the windshield and the side glass through the differential duct 24, so that these are clouded.

Next, in the foot mode, as shown in FIG. 3, the foot door 32 opens the foot duct opening 30 fully, and the double-sided air distribution doors 36, 38 completely close the vent duct opening 34. The rotation is controlled as described above, and the differential duct opening 40 is fully opened by the air distribution door 38. Further, the rotation of the auxiliary differential door 42 is controlled to a position where the ventilation resistance in the differential duct 24 increases. In this state, most of the air in the heater unit is distributed to the feet of the occupant through the foot duct 28 to heat the feet of the occupant. Further, although the differential duct opening 40 is controlled to the fully open position, a part of the air in the heater unit 20 is supplied through the differential duct 24 to the windshield and side glass since the auxiliary differential duct 42 increases the ventilation resistance in the differential duct 24. It is distributed to.

Next, in the bilevel mode, the foot duct 32 is fully opened by the foot door 32 as shown in FIG. Further, one of the double-sided air distribution doors 36 and 38 is rotationally controlled so as to completely close one of the vent duct openings 34, while the other is open. The air distribution door 38 of the vent duct opening 3
The rotation control is performed so that the other opening 34b of the nozzles 4 is fully opened. As a result, the differential duct opening 40 is brought to the fully closed position by the air distribution door 38. In this state, relatively warm air in the air in the heater unit is distributed to the feet of the occupant through the foot duct 28 to heat the feet of the occupant, and the relatively cool air is supplied to the vent duct 26. The air is distributed to the upper body of the occupant in the vehicle.

Next, in the differential foot mode, the foot duct 32 is fully opened by the foot door 32 as shown in FIG. In addition, double opening type air distribution doors 36, 38
Is controlled so that the vent duct opening 34 is fully closed. As a result, the differential duct opening 40 is fully opened by the air distribution door 38. Also, the auxiliary differential door 42
Is controlled to rotate to a position where the ventilation resistance in the differential duct 24 does not increase. In this state, the air in the heater unit is distributed toward the feet of the occupant through the foot duct 28, thereby heating the feet of the occupant. To remove cloudiness.

[0013] Heating Thus, according to an embodiment of the present invention
In the door structure of the data unit , it is not necessary to rotate the air distribution doors 32, 36, and 38 to the intermediate position in order to realize various air distribution modes. Therefore, the air distribution door does not generate rattling noise due to the vibration of the vehicle body, and since the air distribution door is not set at the intermediate position, there is little variation in the air distribution ratio. Further, in such an embodiment, the opening of the vent duct can be enlarged without increasing the size of the heater duct 20, and when a large amount of air is desired,
For example, if a large amount of low-temperature, high-speed air is blown out
Is preferred because it gives a feeling of cooling
Sometimes, increasing the amount of opening of a pair of air distribution doors
The passage resistance is reduced,
Cold air is obtained. Also, if you do not need much airflow
For example, when the bi-level mode of head cold foot fever,
Only the damper opens and blows air with
It will be cool.

The present invention is not limited to the above-described embodiment, but can be variously modified.
For example, as shown in FIG. 6, the column 35 that separates the vent duct opening 34 into two openings 34 a and b is eliminated, and the front edge of one door 36 is pressed against the front side surface of the other door 38. This portion may be sealed. In this case, it is possible to prevent the support posts 35 from becoming airflow-resistant, and to avoid difficulties in forming the support posts 35 integrally with the heater unit casing.
It also contributes to lower manufacturing costs.

[0015]

[Effect of the Invention] As described above, the present invention
According to the door structure of the heater unit , the opening area of the vent duct opening can be increased without increasing the size of the device, and when a large amount of air is desired, for example,
A feeling of cooling is when a large amount of low-temperature, fast-flowing air is blown out
During cooling, which is considered preferable because
By increasing the opening of the pair of air distribution doors,
Resistance and reduced noise due to air distribution, resulting in a large amount of cold air
It is. Also, when you do not need much air volume, for example,
In bi-level mode of cold head heat, only one damper
Opens, and it becomes easier to blow out air with a temperature difference between the upper and lower sides. In addition, variations in the air distribution ratio are reduced and an excellent effect that comfortable air conditioning for automobiles can be realized is achieved.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a vent mode of a door structure of a heater unit according to an embodiment of the present invention.

FIG. 2 is a schematic sectional view showing a differential mode of the door structure.

FIG. 3 is a schematic sectional view showing a foot mode of the door structure.

FIG. 4 is a schematic sectional view showing a bi-level mode of the door structure.

FIG. 5 is a schematic sectional view showing a differential foot mode of the door structure.

FIG. 6 is a perspective view showing a main part of a door structure according to another embodiment of the present invention.

FIG. 7 is a schematic sectional view of a conventional door structure.

[Explanation of symbols]

20: heater unit, 24: differential duct, 26: vent duct, 34: vent duct opening, 36: air distribution door, 38 ...
Air distribution door, 40 ... differential duct opening.

Claims (1)

(57) [Scope of request for utility model registration] 1. A vent duct opening of a vent duct (26).
(34) and the differential duct opening (40) of the differential duct (24) are provided close to each other, and the vent duct opening (34) and the differential
Foot duct (28) at a position away from duct opening (40)
Foot duct openings (30) were also opened, and each of these openings
(30, 34, 40) in air distribution heater unit door automotive air conditioner that kicked set to open and close control in the Ben
The duct opening (34) has a pair of double-sided air distribution doors (3
6, 38) is mounted for rotation, one of the doors of the pair of air distribution door (38) is, by the rotation of the door (38), differential
Door structure of the heater unit, characterized in that it is instrumentation wear so as to open and close the control duct opening (40).