JPH0315365Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial field of application) This invention relates to an air volume control device for an air conditioner for an automobile, and in particular, adjusts the air volume guided to the floor duct to the front side of the vehicle interior and This invention relates to an air volume adjustment device that can adjust distribution to the rear side.

(Prior Art) Generally, an air distribution chamber 1 as shown in Fig. 1 is located downstream of a heater unit in an automobile air conditioner.
is defined, and this air distribution room 1 is communicated with a floor duct 2 via a floor door (not shown). The floor duct 2 has a side port 3 that distributes air to the front seats (front side) in the vehicle interior, and a side port 3 that distributes air to the rear seats (rear side).
A rear port 4 is formed to distribute air to the
A rear floor duct (not shown) is connected to this rear port 4.

Generally, when heating a room, hot air is distributed downward into the vehicle interior, so warm air heated by the heater unit (or warm air reheated from the cooling air cooled by the cooler unit) is also used. include)
After being guided into the air distribution chamber 1, the air is guided from the air distribution chamber 1 to the floor duct 2, and is blown into the vehicle interior from the side port 3 and rear port 4 of the floor duct 2, thereby regulating the temperature of the vehicle interior. The air volume ratio of warm air blown to the front seat side of the vehicle interior and warm air blown to the rear seat side is adjusted by an air volume adjustment plate (not shown) provided in the rear floor duct (1987-
86148).

(Problem to be solved by the invention) By the way, the conventional air volume adjustment device only has a wind direction adjustment and air volume adjustment plate installed at or near the rear floor duct outlet, and the side port 3 of the floor duct 2 is always open. The warm air blown out from the side port 3 is directed toward the feet of the tower passenger seated in the front seat by a guide plate 5 formed at the mouth of the side port 3.
When adjusting the temperature in the vehicle interior, the warm air guided to the floor duct 2 is blown out from the side port 3, which has a small flow resistance, and there is not necessarily a sufficient amount of warm air to the rear side, which has a large flow resistance. Sometimes you are not guided.

Therefore, conventionally, while the front seat side is sufficiently heated, the rear seat side tends not to be sufficiently heated. This is because a passenger is always seated in the front driver's seat, and there are cases where there are no passengers in the rear seats, so the front seats are given priority and the driver can drive safely in the winter. This is for the purpose of However, as in taxis, where passengers are frequently seated in the rear seats and it is necessary to provide adequate heating for the passengers in the rear seats, as mentioned above, conventionally structured devices are There was a problem in that sufficient warm air was not guided to the rear seats due to the resistance, and a sufficient heating effect for the rear seats could not be obtained.

Therefore, this idea was made in view of the problems of the prior art described above, and it is possible to adjust the amount of air blown out from the floor duct to the front side and the rear side of the passenger compartment as appropriate. An object of the present invention is to provide an air volume control device for an air conditioner for an automobile, which makes it possible to heat the rear seats intensively according to the weather conditions, and improves the temperature control efficiency in the vehicle interior.

[Structure of the invention] (Means for solving the problem) In order to achieve this object, the invention provides an air distribution chamber on the downstream side of the heater unit to distribute air to various air outlets opened in the vehicle interior. A side port for the driver's seat that blows air towards the feet of a passenger sitting in the front driver's seat, and a side port for the front passenger that blows air towards the feet of a passenger sitting in the front passenger seat. A floor duct provided with a side port and a rear seat port that blows air toward the feet of passengers seated in the rear seat is connected to the air distribution chamber, and extends to the rear seat and blows air. In the automobile air conditioner, the air conditioner is formed by connecting a rear floor duct having a tip opening for blowing air to the rear seat port, the air conditioner being swingably connected to each of the side ports for the driver's seat and the front passenger seat. The plate-shaped air guide and each air guide are synchronized between an open position where air is preferentially blown out from the side ports and a closed position where air is preferentially blown out from the rear seat port. the air guide is synchronized by the power transmission mechanism to open and close each of the side ports in a manner that allows the degree of opening to be adjusted; The air volume ratio of the rear side air blown out from the rear floor duct and the front side air blown out from the both side ports is such that the ratio of the rear side air continuously increases as the air volume moves from the open position to the closed position. This is an air volume adjusting device for an air conditioner for an automobile, which is characterized in that the air volume is changed to increase the air volume.

(Operation) When the air guide is moved to the open position, the air flowing down from the heater unit is preferentially blown out from both side ports toward the feet of the passenger seated in the front seat. Furthermore, when the heater unit is moved to the closed position, air from the heater unit is preferentially blown out toward the feet of the passenger seated in the rear seat through the rear floor duct from the rear seat port. On the other hand, when the air guide moves from the open position to the closed position, the ratio of rear side air is continuously increased according to the opening degrees of both side ports.

Therefore, when you first start the car,
By moving the air guide to the open position and preferentially blowing warm air towards the feet of front seat passengers, it is possible to sufficiently warm the driver.
When passengers sit in the rear seats, the air guide is moved toward the closed position to blow hot air preferentially or with a higher ratio of rear air to the rear seat passengers. This makes it possible to give top priority to heating the rear seats.

Furthermore, by configuring the air guides as described above, both air guides open and close their respective side ports in synchronization.

(Example) Hereinafter, an example of the air volume adjustment device for an air conditioner for an automobile according to the present invention will be described with reference to the accompanying drawings.

A ventilation chamber 10 as shown in FIGS. 2 to 4 is provided downstream of the heater unit in an automobile air conditioner, and a floor door 12 is provided between the ventilation chamber 10 and the floor duct 11 at the bottom. It is set up. As shown in FIG. 4, this ventilation chamber 10 is provided with an instrument duct 14 whose opening degree is adjusted by a vent door 13, and a defrost duct 16 whose opening degree is adjusted by a differential door 15.

On the other hand, as shown in FIGS. 2, 3, and 5, the floor duct 11 includes a side port 19a for the driver's seat that blows air toward the feet of the passenger seated in the front driver's seat 30a; Front passenger seat 30b
side port 19b for the passenger seat that blows air toward the feet of passengers seated in the passenger seat 2;
A rear seat port 18 is formed for blowing air out toward the feet of a passenger seated in the passenger seat 1. A rear floor duct 20 communicates with the rear port 18, and this rear floor duct 20 bifurcates into two branch parts 20a and 20b from the middle, and the rear seat 20 is connected to the rear port 18.
1, and air is blown out from the tip opening 22 to the feet of the passenger seated on the rear seat 21. In front of the branch parts 20a and 20b of the rear floor duct 20, an air volume adjustment plate 23 is provided to adjust the amount of air passing through the duct 20, and each opening 22 is also provided with an air volume adjusting plate 23 for adjusting the amount of air passing through these openings 22. Air volume adjustment plate 23 for
a, 23b are provided.

In addition, each side port 19 of the floor duct 11
Each of the side ports a and 19b has a position between an open position where air is preferentially blown out from both side ports 19a and 19b and a closed position where air is preferentially blown out from the rear seat port 18. Rear side air blown out from the rear floor duct 20 while opening and closing 19a and 19b;
An air guide that changes the air volume ratio to the front side air blown out from both side ports 19a, 19b so that the ratio of the rear side air increases continuously as the air moves from the open position to the closed position. 25a and 25b are attached so as to be able to freely adjust their opening degrees. Each air guide 25a, 25b
are plate-shaped so as to cover the respective side ports 19a, 19b, and as shown in FIG.
It is pivotally hinged to the upper edge of 19b. The opening and closing of the side ports 19a and 19b by the air guides 25a and 25b is synchronized by a power transmission mechanism 26 consisting of a link mechanism, and the opening amount thereof is adjusted by the amount of rotation of a link lever 27. . The link lever 27 is rotatably supported around a central fulcrum (shaft) 28, and is normally biased by, for example, a spring (not shown) to keep the air guides 25a, 25b in the fully open position. Both ends of the link lever 27 are connected to air guides 25a and 25b.
One end of the link lever 27 is connected to a control lever 29 by a cable, link, etc., and when the control lever 29 is operated, the air guide 25
The amount of opening and closing of a and 25b is synchronously adjusted as appropriate.
Alternatively, the air guide 25 may be operated by an actuator which is operated by negative pressure instead of by a lever.

Therefore, the air blown out from the side ports 19a, 19b is directed toward the feet of the driver seated in the front seat 30, and when the side ports 19a, 19b are opened, air guides 25a, 25b are blown out. functions as a guide plate for blown air, and functions as a blockage plate when blocked. Note that these air guides 25a, 25b
The side port 19 may be configured not to be completely blocked in order to allow some warm air to flow to the footwells of the front seats.

Next, the effect will be explained.

The warm air heated by the heater unit or the cold air that passes through without being heated is guided into the air distribution chamber 10 and from there to the desired duct. The warm air guided to the front seats 30a and 30b is sent from both side ports 19a and 19b of the floor duct 11 and the air outlet of the rear floor duct 20 to the front seats 30a and 30b.
The air is blown out to the footwells of the rear seats 21, heating the interior of the vehicle.

During this heating process, if it is necessary to particularly heat the rear seat side, such as in a luxury car or a taxi car, operate the operating lever 29 to control the power transmission mechanism 2.
6 to close the air guides 25a, 25b of the side ports 19a, 19b or reduce their opening degree. As a result, as is clear from the air distribution ratio shown in Fig. 6, the rear floor duct 20
A large amount of warm air is guided inside, and the rear seat 21 side can be heated rapidly in a way that cannot be achieved with conventional systems. Further, by mutually changing the opening degree of the left and right openings 22 by the air volume adjustment plates 23a and 23b provided in the branch parts 20a and 20b, respectively, the air volume blown to the rear seats can be changed between the left and right sides. I can do it.

"Effects of the Invention" As described above, according to the present invention, a plate-shaped air guide that is swingably connected to each of the side ports for the driver's seat and the passenger's seat;
Each air guide is opened and closed in a synchronized manner so that the opening degree can be adjusted between an open position where air is preferentially blown out from both side ports and a closed position where air is preferentially blown out from the rear seat port. and a power transmission mechanism consisting of a driving link mechanism, and the air guide is synchronized by the power transmission mechanism to open and close each of the side ports in an adjustable manner, and the air guide is configured to open and close the side ports in a manner that allows adjustment of the opening degree. The air volume ratio between the air and the front side air blown out from the both side ports is changed so that the ratio of the rear side air continuously increases as the position moves from the open position to the closed position. By simply adjusting the opening degree of each of the air guides mentioned above, you can set the air volume ratio between the air blown to the front side of the passenger compartment and the air blown to the rear side. If you want to heat the room, that is, if there are passengers in a taxi, or if there are executives in the back seat of a luxury car, etc., narrow down both side ports to reduce or stop the hot air blown out from these ports. By doing so, the rear passenger compartment can be heated effectively and rapidly.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an air distribution chamber provided in a conventional air conditioner for an automobile; FIG. Fig. 3 is a schematic side view of Fig. 2, Fig. 4 is a sectional view of the air distribution chamber, Fig. 5 is a schematic diagram showing the opening/closing mechanism of the air guide, and Fig. 6 is blown out to the front side and rear side. It is a graph showing the relationship between the air volume ratio and the opening degree of the air guide. 10...Air distribution room, 11...Floor duct, 12
...Floor door, 18...Rear seat port, 19a
...Side port for driver's seat, 19b...Side port for passenger seat, 20...Rear floor duct,
21...Rear seat, 25a, 25b...Air guide, 26...Power transmission mechanism, 27...Link lever, 29...Operation lever, 30a...Driver's seat, 30b...Passenger seat.

Claims (1)

[Scope of Claim for Utility Model Registration] A ventilation chamber 10 that distributes air to various air outlets opened in the vehicle interior is provided on the downstream side of the heater unit, and is directed toward the feet of a passenger seated in the front driver's seat 30a. a side port 19a for the driver's seat that blows out air, a side port 19b for the passenger seat that blows air out toward the feet of a passenger seated in the front passenger seat 30b, and a passenger seat seated in the rear seat 21. A floor duct 11 is provided with a rear seat port 18 that blows air out toward the feet of the passenger. In the air conditioner for an automobile, the rear floor duct 20 is connected to the rear seat port 18, wherein the side port 1 for the driver seat and the passenger seat is connected to the rear floor duct 20.
Plate-shaped air guides 25a, 25b are swingably connected to the respective side ports 19a, 19b, and each of the air guides 25a, 25b is set to an open position where air is preferentially blown out from the side ports 19a, 19b. , and a closed position where air is preferentially blown out from the rear seat port 18,
The air guides 25a and 25b are synchronized by the power transmission mechanism 26 to open and close the side ports 19a and 19b. The rear side air blown out from the rear floor duct 20 and the both side ports 19
The air volume ratio with respect to the front side air blown out from the openings a and 19b is changed such that the ratio of the rear side air continuously increases as the opening position moves from the open position to the closed position. Air volume adjustment device for automotive air conditioners.