JP2508026Y2 - Control doors for automotive air conditioners - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Purpose of the Invention] (Industrial Application Field) The present invention relates to a control door for opening and closing an opening of an air passage formed in a casing of an air conditioner for a vehicle.

(Prior Art) A conventional automobile air conditioner includes an intake unit that takes in air inside and outside the vehicle, a cooling unit that cools the taken air by an evaporator, and a heater that reheats the cooled air by a heater core. And a unit.

The heater unit is provided with an outlet and an opening / closing door for selecting the blowing position of the conditioned air for the occupant according to various blowing modes, but various opening / closing doors are proposed depending on the shape of the heater unit. Has been done.

A conventional automobile air conditioner shown in FIG.
-10,325), the differential air outlet 2 that blows the air from the heater unit toward the inner surface of the windshield and the vent outlet 3 that blows the air to the upper half of the occupant's upper body.
A plate-shaped switching door 2D that selectively opens and closes both air outlets 2 and 3 is rotatably attached to the vehicle, while a foot outlet 4 that blows out to the occupant's feet has a plate-shaped foot door.
4D is installed. Further, on the upstream side of the differential outlet 2 and the vent outlet 3, a common opening 5 for both outlets 2 and 3 is provided.
An opening / closing door, which is a so-called “swinger type door”, is rotatably provided in the opening 5.

As shown in FIG. 5, the swing door has a curved door body 6, and the door shaft 7 and the door body 6 are connected by a pair of arms 8a and 8b. Further, the illustrated arm 8a is formed to be shorter than the arm 8b, and the peripheral edge of the opening 5 is formed in a lame manner corresponding to the lengths of the arms 8a and 8b. When the opening 5 is closed by the turning force of the above, the seal packing 9 made of an elastic material comes into close contact with the peripheral edge of the opening 5.
The advantage of this swing door is that even if the wind pressure in the direction of arrow A acts on the door body 8 shown in the same figure, the wind pressure acts in the opening / closing direction of the control door, that is, the rotating direction of the door shaft 7. This makes it possible to eliminate the increase and fluctuation in the operating force required for opening and closing the control door.

(Problems to be solved by the invention) However, the conventional swing door has a problem in terms of the storage space of the door with respect to the opening area. That is, according to the swing door, it is necessary to secure a storage space for storing the door body 6 in the casing 1 when the control door opens the opening portion 5. In this case, the size of the casing 1 is temporarily changed. If it is made equal to the flat door 5D (shown by the chain double-dashed line in FIG. 5), the size of the opening 5 must be reduced because it requires a storage space. Therefore, the ventilation resistance in the opening 5 may increase, and noise may be generated. On the contrary, if the sizes of the openings 5 are made equal, the casing 1 is secured in order to secure a storage space.
Must be increased, which may lead to an increase in the size of the casing 1.

The present invention has been made in view of the above-mentioned problems of the prior art, and by ensuring a sufficient area of the opening without increasing the size of the casing, ventilation resistance and noise in the opening can be reduced. An object of the present invention is to provide a control door of an air conditioner for an automobile that can be reduced.

[Means for Solving the Problems] (Means for Solving the Problems) The present invention for achieving the above object includes a door body that opens and closes an opening of an air passage formed in a casing of an automobile air conditioner, and A door shaft parallel to the door body and provided at a position separated from the door body by a predetermined distance. The door shaft and the door body are connected by a connecting means, and the door shaft is centered. In a control door that opens and closes the opening by rotating a door body, the opening is a first opening opened on an arbitrary surface of the casing, and a surface inclined by a surface of the casing adjacent to the arbitrary surface. The second opening which is opened continuously to the first opening
A second door body that is configured to include an opening, and the door body is attached so as to be inclined so as to conform to the first door body that opens and closes the first opening and the inclined surface that opens and closes the second opening. And a control door for an automobile air conditioner, characterized in that the first and second door bodies are integrally formed.

(Operation) In the present invention configured as described above, since the opening is composed of the first and second openings continuously formed on the surfaces adjacent to each other, in this case, the casing Even if the size is made equal to that of the conventional flat door, the area of the opening can be ensured to be equal to that of the flat door.
Therefore, the area of the opening can be sufficiently secured without increasing the size of the casing, which reduces the ventilation resistance of the air passing through the opening and prevents the generation of noise. You can

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view showing a control door according to an embodiment of the present invention, and FIG. 2 is a schematic perspective view showing an essential part of the embodiment,
FIGS. 3 and 4 are explanatory views showing the operation of the embodiment, in which the same parts as those of the conventional control door shown in FIG. 5 are designated by the same reference numerals, and the description thereof will be partially omitted.

First, the structure will be described. In the present embodiment shown in FIG.
It is a case where it is applied to a control door that opens and closes an opening 5 opened in the casing 1 as a common opening for the differential air outlet 2 and the vent outlet 3 shown in FIG.

As shown in FIG. 2, the opening 5 according to the present embodiment is 2
The first opening 20 is made up of two openings 20 and 21.
Is provided on the upper surface 1a of the casing 1 (arbitrary surface of the casing). As shown in FIG. 1, the periphery of the first opening 20 has an upper surface corresponding to the shape of the first door body 22 described later.
1a is inclined and cut off, and when the control door is opened and closed, the sealing surface on the surface of the first door body 22 is the first opening portion.
When the 20 is closed, the first opening 20 is only contacted, but otherwise it is not contacted. The first opening 20 is formed in the same area as the opening 5 shown in FIG.

The second opening 21 according to this embodiment is the upper surface of the casing 1.
A side surface 1b adjacent to 1a (a surface of the casing adjacent to an arbitrary surface of the casing) is continuously provided with the first opening 20. More specifically, as shown in FIG. 3, the portion where the second opening 21 is formed on the side surface 1b of the casing 1 is
It is inclined as it goes downward in the figure, and is inclined by L at the tip. The width W of this inclined surface 1c is
It is formed slightly larger than the width W1 of the door body 6. Since the second opening 21 is formed on the inclined surface 1c, the sealing surface on the surface of the second door body 23, which will be described later, closes the second opening 21 when the control door is opened and closed. At times, the second opening 21 is only contacted, and in other cases, the second opening 21 is not contacted. Here, it is preferable that the inner wall of the side wall 1b and the second door body 23 be provided with a slight gap S in order to prevent mutual interference when the control door is rotated.

As shown in FIG. 1, an arm 8a and an arm 8b that is longer than the arm 8a are fixed to the door shaft 7 that is inserted into the casing 1, and the other ends of these arms 8a and 8b are fixed. The door body 6 is fixed. Further, a link, a control cable, a rod of an actuator, etc. (none of which are shown) are connected to the door shaft 7 outside the casing 1. The door body 6 is adapted to rotate in accordance with the position of a provided mode setting lever or the like.

The door body 6 according to the present embodiment, as shown in FIG.
The first and second openings respectively corresponding to the first and second openings 20 and 21.
The first door body 22 is composed of the door bodies 22 and 23.
Is convexly curved in a direction opposite to the door shaft 7, and is formed in a shape capable of closing the first opening 20 while being in contact with the first opening 20. On the surface of the first door body 22, a substantially annular first seal packing 24, which is in close contact with the peripheral edge of the first opening 20 in the closed state, is attached by an adhesive or the like. The first seal packing 24 is made of an elastic material such as urethane foam or a rubber material, and is closely attached to the peripheral edge of the first opening 20 to ensure hermeticity. On the other hand, on the back surface of the first door body 22,
The other end of the arm 8 connected to the door shaft 7 is fixed, and the door body 6 rotates around the door shaft 7.

The second door main body 23 according to the present embodiment is formed continuously with the first door main body 22 and has a shape capable of closing the second opening 21 while being in contact with the second opening 21. . Further, the second door main body 23 is inclined along the inclined surface 1c of the casing 1 as described above, and the second door main body 23 does not come into contact with the second opening 21 only when the sealing surface on the surface closes the second opening 21. It comes in contact.

On the surface of the second door body 23, a substantially annular first seal packing 25 that is in close contact with the peripheral edge of the second opening 21 is adhered to the surface of the second door body 23 by an adhesive agent or the like in order to ensure the sealing performance in the closed state. . The second seal packing 25 is made of an elastic material like the first seal packing 24. In addition,
In the present embodiment, the first and second seal packings 24 and 25 are formed in an annular shape, but they may be formed in a plate shape corresponding to the respective surfaces of the first and second door main bodies 22 and 23.

In the figure, reference numeral “10” is a heater core and is “11”.
Is a mixed door.

 Next, the operation of this embodiment will be described.

The opening 5 is closed by the control door in the state shown by the solid line in FIG. When the opening 5 is opened from this closed state, the position of the mode setting lever or the like is adjusted, and the door shaft 7 is rotated in the clockwise direction in the figure via a link or the like. Then, the door body 6 becomes the shaft 7
With this, it rotates and moves to the state shown by the chain double-dashed line in the figure to open the opening 5. At this time, the first door body 22 is
Arms 8a and 8b have different lengths and short arm 8
Since a is located on the rear side with respect to the rotating direction and long arm 8b is located on the front side, the first door body 22 is not
This is done by drawing a track that separates from the opening 20. Therefore, even if wind pressure is applied to the back surface of the first door main body 22, the first door main body 22 is moved in a direction substantially perpendicular to the wind pressure.
Therefore, the operating force required to open and close the control door is significantly smaller than that of a conventional flat door that moves the door against wind pressure. Also, the second door body 23
Has a surface substantially parallel to the wind pressure applied to the back surface of the door body 22 and is formed with a slight gap S from the side surface 1b of the casing 1, so that the surface resists the wind pressure. Since the pivoting is performed in parallel without moving by moving, the operating force required for opening and closing the control door is not increased.

Similarly, when it is desired to close the opening 5 from this open state, the position of the mode setting lever or the like is adjusted and the door shaft 7 is rotated counterclockwise through the link. Then, the door body 6 moves to the closed state and closes the opening 5. Also at this time, the first door body 22 rotates so as to cross the wind pressure acting on the first door body 22, and the second door body 23 also rotates in parallel to the wind pressure. Therefore, the operating force required to open and close the control door can be significantly reduced.

In this embodiment having such a configuration, in the opened state, as shown in FIG. 4, the first opening 20 and the first opening 20 opened to the same size as the conventional swing door are provided. Department
Since the opening 5 is composed of the second opening 21 that is continuously formed in the opening 20, the area of the entire opening can be increased as compared with the conventional swing door. Therefore, even if the size of the casing 1 is made equal to that of the conventional flat door, it is possible to secure the same size without reducing the area of the opening 5 as compared with the opening area in the case of the flat door. As a result, the area of the opening 5 can be sufficiently secured without increasing the size of the casing 1. Therefore, the ventilation resistance of the air passing through the opening 5 is significantly reduced as compared with the conventional swing door, and noise is not generated.

Further, in this embodiment, the inclined surface 1c is provided on the side surface 1b of the casing.
On the other hand, the width W1 of the second door main body 23 formed along the inclined surface 1c is configured to be slightly smaller than the width W on the inclined surface 1c. In this case, the second seal packing 25 only comes into contact with the casing 1 only when the second opening 22 is closed from the closed state and when the second opening 22 is opened from the open state, and during the opening / closing operation in the middle. There is no contact with the casing 1, which also reduces the operating force required for opening and closing the control door. And at the same time, the second seal packing
No. 25 does not come into sliding contact with the casing 1 much, so that the control door continues to maintain the sealing property for a long time without peeling of the seal packing.

The present invention is not limited to the above-described embodiments, and various modifications can be considered. For example, a step may be formed on the upper surface, and the opening of the present invention may be formed on the step.
In this case, the arbitrary surface of the casing which is the gist of the present invention is the upper surface, and the surface of the casing adjacent to the arbitrary surface is the rising surface of the step.

[Effects of the Invention] As described above, according to the present invention, the area of the opening can be sufficiently ensured without enlarging the casing, unlike the conventional swing door, and the ventilation in the opening can be achieved. The resistance can be reduced and the generation of noise can be prevented.

Moreover, since the seal portion of the door can be opened and closed without sliding on the casing side, the seal can be surely sealed without peeling of the seal or increase in operating force.

[Brief description of drawings]

FIG. 1 is a sectional view showing a control door according to an embodiment of the present invention, FIG. 2 is a schematic perspective view showing an essential part of the embodiment, and FIGS.
FIG. 5 is an explanatory diagram showing the operation of the same embodiment, and FIG. 5 is a schematic configuration diagram showing a conventional control door. 1 ... Casing, 1a ... Top surface (any surface of the casing), 1b ... Side surface (casing surface adjacent to any surface), 1c ... Inclined surface, 5 ... Opening, 6 ... Door body,
7 ... Door shaft, 8 ... Arm (connecting means), 20 ...
… First opening, 21 …… Second opening, 22 …… First door body, 23 …… Second door body.

Claims (1)

(57) [Scope of utility model registration request] 1. A casing (1) for an automobile air conditioner.
A door body (6) that opens and closes an opening (5) of an air passage formed therein, and is provided parallel to the door body (6) and at a position separated from the door body (6) by a predetermined distance. A door body (6) having a door shaft (7), and the door shaft (7) and the door body (6) are connected by a connecting means (8). A control door that opens and closes the opening (5) by rotating the first opening (5), the first opening (20) opening the opening (5) on an arbitrary surface (1a) of the casing (1), A second opening (21) formed continuously with the first opening (20) on the surface (1c) inclined with the surface (1b) of the casing (1) adjacent to the arbitrary surface (1a) The door body (6) is provided with a first door body (22) for opening and closing the first opening (20) and a second opening. The first and second door bodies (22, 23) are composed of a second door body (23) that is attached so as to be inclined to fit the inclined surface (1c) that opens and closes (21). A control door for an air conditioner for an automobile, characterized by being integrally formed.