JPH0640486Y2 - Vehicle air conditioning door structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an air conditioner installed in a vehicle, and in particular, it blows warm air from a side outlet of a ventilator duct and cool air from a center outlet. The present invention relates to a door structure for an air conditioner that can blow out.

(Prior Art) Conventionally, as an air conditioner for a vehicle, for example, Jikken Sho 63-3
As disclosed in Japanese Patent No. 282 publication, an air conditioning unit having a built-in heater core, a ventilator duct that guides the conditioned air from the air conditioning unit to both side parts and a center part of the vehicle, and blows the air conditioning unit upstream of the air conditioner unit. Equipped with a bypass duct that directly guides the cool air from the ventilator duct to the center outlet of the ventilator duct. However, it is known that cool air can be blown from the center outlet of the ventilator duct. In this case, the ventilator duct is provided with a center shut door that blocks the conduction of warm air from the air conditioning unit to the center outlet, and the bypass duct is provided with a cool air shut door that closes the bypass duct in the normal air conditioning mode. It is common to be done.

(Problems to be solved by the invention) By the way, in this type of air conditioner, various doors such as an air mix door are provided in addition to the center shut door and the cool air shut door. The switching operation is performed by. Therefore, there is a problem that the number of operation levers increases, and the operation becomes troublesome.

The present invention has been made in view of the above points, and its object is to make it possible to appropriately switch the center shut door and the cold shut door described above with a single operating lever, and to improve comfort. It is intended to provide an air-conditioning door structure capable of improving operability while ensuring the above.

(Means for Solving the Problem) In order to achieve the above-mentioned object, the solution means of the present invention is an air conditioner for a vehicle to which the present invention is applied. Of the air conditioner unit, a bypass duct that guides the cool air directly from the upstream side of the heater core of the air conditioning unit to the center outlet of the ventilator duct, and a communication to the center outlet of the ventilator duct. A center shut door that opens and closes, and a cool air shut door that opens and closes the bypass duct. The center shut door is rotatably supported in the center of the ventilator duct, and rotates from the intermediate position parallel to the flow direction of the ventilator duct to the center outlet of the ventilator duct. Is provided so that it can be switched between two rotational positions for closing. Further, the cold shut door is integrally attached to the center shut door, and when the center shut door is located at one of the rotating positions, the cool shut door opens the bypass duct and the center shut door opens the other. The center shut door is provided so as to close the bypass duct when it is located at the rotating position and the intermediate position.

(Operation) With the above configuration, in the present invention, when the center shut door is located at the intermediate position, the ventilator duct is opened to the center outlet, and the cool shut door attached to the center shut door acts as the bypass duct. By closing, the air conditioning is performed in the same way as when the bypass duct is not provided.

On the other hand, when the center shut door is pivotally operated from the intermediate position to the one pivotal position, the center shut door closes the communication of the ventilator duct to the center outlet, and the cooling duct shuts off the bypass duct. As a result, cool air can be blown out from the center outlet of the ventilator duct. When the center shut door is rotated from the intermediate position to the other rotating position,
While keeping the bypass duct closed by the cold air shut door, the center shut door also closes the communication of the ventilator duct to the center outlet, so that neither the conditioned air nor the cold air is blown from the center outlet. .

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 show an air conditioner for a vehicle equipped with a door structure according to an embodiment of the present invention, wherein 1 is an air conditioner unit as a main body of the air conditioner, and the air conditioner unit 1 is
Blower unit 3 with built-in blower 2 and evaporator 4
The cooling unit 5 has a built-in heater and the heater unit 7 has a heater core 6.

The blower unit 3 is formed with an outside air intake 8 and an inside air intake 9, and an air intake door 10 for selectively switching the air flowing in from both intakes 8 and 9.
Is provided. Further, the heater unit 7 is provided with an air mix door 11 for adjusting the amount of air passing through the heater core 6 from the evaporator 4 side of the cooling unit 5, and is also connected with a ventilator duct 12 and a defroster duct 13. The vent unit 14 connects the heater unit 7 with the ventilator duct 12.
Thus, the communication between the heater unit 7 and the defroster duct 13 is opened and closed by the defroster door 15, and the heat opening 16 formed in the heater unit 7 is opened and closed by the hide door 17. There is.

The ventilator duct 12 guides the conditioned air from the heater unit 7 to the center of the vehicle and blows it out, and the center ventilator duct 12a branches off from the center ventilator duct 12a to guide the conditioned air to both sides of the vehicle. It consists of a pair of left and right side ventilator ducts 12b, 12b that blow out, and the outlets of these ventilator ducts 12a, 12b are
It comprises a center louver 21 and a side louver 22 provided on the instrument panel 20 as shown in FIG.

Further, 23 is a bypass duct that guides the cool air cooled by the evaporator 4 from the cooling unit 5 directly to the center ventilator duct 12a (specifically, a portion downstream of the branch with the side ventilator duct 12b) without passing through the heater unit 7. , 24 are center ventilator ducts 12a
Is a center shut door that opens and closes the bypass duct 12a, and a cold air shut door 25 that opens and closes the bypass duct 23 is integrally attached to the center shut door 24.

The structures of the center shut door 24 and the cold air shut door 25 are shown in detail in FIGS. 4 to 8. That is, the center shut door 24 is configured such that the support shafts 27, 27 are provided at the center of both left and right edges of a door body 26 having a substantially rectangular flat plate shape,
The support shaft 27 is placed on the center line of the center ventilator duct 12a.
An intermediate position (state shown by a solid line in FIG. 4) that is rotatably supported and that opens the center ventilator duct 12a with the door body 26 parallel to the air flow direction in the center ventilator duct 12a, and the intermediate position. Rotate from the position and the front and rear edges of the door body 26 are center ventilator duct 12
It is adapted to be selectively switched between two rotational positions (a state shown by a phantom line in FIG. 4) which comes into contact with the inner wall of a and closes the center ventilator duct 12a. The switching of the center shut door 24 is performed by the operation lever 28 linked to the support shaft 27.
The knob portion 28a of the operating lever 28 is
Center louver of instrument panel 20 as shown
It is located on the 21st side.

Further, the cold air shut door 25 is made of a slender rectangular flat plate corresponding to the passage shape of the bypass duct 23, and slide portions 31, 31 having elongated holes 30, 30 are provided at both ends in the longitudinal direction (left and right direction) thereof. Has been formed. At the rear end of the door body 26 of the center shut door 24 (downstream side end of the center ventilator duct 12a in the air flow direction),
The slide portions 31, 31 of the cold air shut door 25 are provided with through holes 32, 32 through which the slide portions 31, 31 slidably pass, respectively, and a guide portion for slidingly guiding the outer surface and both end surfaces of each slide portion 31. 33, 33 are formed, and the cold air shut door 25 is attached to the door body 26 of the center shut door 24 so as to be movable toward and away from the main shaft 26 of the center shut door 24 under the guide of the guide portions 33, 33. .

In addition, the cold air shut door 25 and the center shut door
A pair of coil springs 34, 34 for urging the cold air shut door 25 in the direction of separating the cool air shut door 25 from the center shut door 24 are arranged between the door body 26 and the guide portions of the center shut door 24. Each of the stoppers 33 is a stopper that restricts the position of the cold air shut door 25 separated from the center shut door 24 by engaging with the upper edge of the elongated hole 30 of the slide portion 31 of the cold air shut door 25 corresponding to the guide portion 33. A pin 35 is provided. Thus, in the cold air shut door 25, the center shut door 24 is in one rotational position with respect to the center shut door 24, that is, the door body 26 faces downward toward the upstream side in the air flow direction in the center ventilator duct 12a. In this state, the bypass duct 23 is opened when the center ventilator duct 12 is located in the rotation position for closing the center ventilator duct 12, and the bypass duct 23 is closed when the center ventilator duct 12 is located in the other rotation position and the intermediate position. .

In FIGS. 4 to 6, 36 is the center shut door 24.
Center ventilator duct 12 such as front and rear ends of (door body 26)
Sealing members provided on the contact portion with a and the surface of the cold air shut door 25 facing the bypass duct 23, respectively.

Next, to explain the function and effect of the above-described embodiment, when the position of the center shut door 24 is selectively operated by the operating lever 28 and the center shut door 24 is positioned at the intermediate position as shown by the solid line in FIG. The communication of the center ventilator duct 12a to the center louver 21 is opened. Also,
The cool air shut door 25 attached to the center shut door 24 is separated from the center shut door 24 by the biasing force of the coil springs 34, 34 and closes the opening of the bypass duct 23 on the center ventilator duct 12 side. Accordingly, it is possible to perform the same air conditioning as in the case where the bypass duct 23 is not provided, that is, the normal air conditioning by adjusting the opening degree of the air mix door 11 and switching the opening / closing of the ventilator duct 14, the heat door 17, and the like.

On the other hand, the center shut door 24 is tilted downward from the intermediate position toward the air flow direction in the center ventilator duct 12a so that the front and rear ends are in seal contact with the inner wall of the center ventilator duct 12a.
When the position of the center shut door is changed to a position indicated by an imaginary line and numeral 24 'in the figure), the center shut door 4 closes the communication of the center ventilator duct 12a with the center louver 21, and the center shut door 24 is rotated. Along with the movement, the cold air shut door 25 is separated from the opening of the bypass duct 23 on the side of the center ventilator duct 12a to open the bypass duct 23 (the cold air shut door at this time is indicated by an imaginary line and symbol 25 '). As a result, the cool air from the cooling unit 5 flows into the center ventilator duct 12a toward the center louver 21 through the bypass duct 23, and the cool air is blown out from the center louver 21. still,
Such a position is selected, for example, when the center louver 21 blows cool air and the side louver 22 blows warm air onto the door glass of the side door to use as a side defroster.

In addition, the center shut door 24 is tilted upward from the intermediate position toward the air flow direction in the center ventilator duct 12a so that the front and rear ends are in seal contact with the inner wall of the center ventilator duct 12a. When the center shut door is switched to the position indicated by the imaginary line and indicated by the reference numeral 24 "), the communication of the center ventilator duct 12a to the center louver 21 by the center shut door 24" is performed by switching the position to one of the above rotational positions. However, the cold air shut door 25 keeps the bypass duct 23 closed, so that neither the conditioned air nor the cold air is blown from the center louver 21. When switching to this rotation position, the center shut door 24 is resisted against the biasing force of the coil springs 34, 34.
The cold air shut door 25 and the cold air shut door 25 are brought close to each other. However, since the biasing force of the coil springs 34, 34 is not large, a large operating force is not required for position switching.

In this way, the opening / closing operation of the center shut door 24 and the cold air shut door 25 can increase the use condition of air conditioning to improve comfort, and the opening / closing operation of the both doors 24, 25 can be performed by the single operation lever 28. Since it can be performed appropriately and easily, the operability can be enhanced.

(Effect of the Invention) As described above, according to the vehicle air conditioning door structure of the present invention, when the center shut door that opens and closes the communication of the ventilator duct to the center outlet is operated, the cold air shut door that opens and closes the bypass duct is also provided. At the same time, the opening / closing of the center shut door is appropriately switched according to the opening / closing of the center shut door, so that the operability can be improved while ensuring the comfort of the air conditioning.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a schematic configuration diagram showing an overall configuration of a vehicle air conditioner, FIG. 2 is an exploded perspective view of the same, and FIG. 3 is a perspective view of an instrument panel. 4 is a sectional view showing the structure of the center shut door and the cold air shut door, and FIG. 5 is a perspective view of the same. Sixth
The drawing is a view as seen from the direction of arrow A in FIG. 5, and FIGS. 7 and 8 are enlarged cross-sectional views taken along the line BB and CC of FIG. 5, respectively. 1 ... Air conditioning unit, 6 ... Heater core, 7 ... Heater unit, 12 ... Ventilator duct, 12a ... Center ventilator duct, 21 ... Center louver (center outlet), 23 ... Bypass duct, 24 ... Center Shut door, 25 ... Cold air shut door.

Claims (1)

[Scope of utility model registration request] 1. An air conditioning unit having a built-in heater core, a ventilator duct for guiding the conditioned air from the air conditioning unit to both side parts and a center part of a vehicle, and blowing the chilled air directly from the upstream side of the heater core of the air conditioning unit. A bypass duct leading to the center outlet of the ventilator duct,
In a vehicle air conditioner including a center shut door that opens and closes communication with the center outlet of the ventilator duct, and a cool air shut door that opens and closes the bypass duct, the center shut door has a center in the ventilator duct. Is rotatably supported by and is switchable between an intermediate position parallel to the flow direction of the ventilator duct and two rotational positions that rotate from the intermediate position to close the communication of the ventilator duct to the center outlet. The cold air shut door is integrally attached to the center shut door, and when the center shut door is located at one of the turning positions, the cool air shut door opens the bypass duct to prevent the center shut door from opening. When the shut door is in the other rotational position and the intermediate position, the center shut Air-conditioning the vehicle door structure, characterized in that There are provided so as to close the bypass duct.