JP2630137B2 - Air outlet switching mechanism for vehicle air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air outlet switching mechanism for a vehicle air conditioner.

[0002]

2. Description of the Related Art In a conventional air outlet switching mechanism for a vehicle air conditioner, a plate-shaped defroster damper having a rotating shaft opens and closes a defroster outlet by rotation of the rotating shaft. Also, mainly in the heating mode, the defroster outlet is slightly opened to allow warm air to leak to the windshield to prevent fogging of the windshield.

[0003]

In order to slightly open the defroster outlet, the defroster damper must be stopped at a position slightly deviated from the fully closed position of the defroster outlet to the fully opened position of the defroster outlet. However, in practice, it is very difficult to accurately stop the defroster damper at the above-mentioned position in consideration of the hysteresis generated between the forward path and the return path of the defroster damper, the variation in assembling the damper, and the like.

[0004] In the heating mode, the amount of hot air leaking to the windshield is generally 15 times of the total defroster blowing air amount.
% To 20% is preferred. If the amount of hot air leaks more than this amount, the occupant's head will be hot, and if it is less, it will not be possible to prevent the windshield from fogging.

[0005] Therefore, the present invention, in the heating mode,
It is an object of the present invention to provide an air outlet switching mechanism for a vehicle air conditioner capable of accurately leaking an appropriate amount of hot air to a windshield.

[0006]

In order to achieve the above object, the present invention provides a face outlet formed in a duct for blowing air passing through the duct toward an upper body of an occupant; A large-diameter defroster outlet formed in the duct for blowing toward the windshield, and a small-diameter defroster formed in the duct adjacent to the large-diameter defroster outlet for blowing the air toward the windshield. An outlet, a face rotation shaft rotatably supported on the duct, a face damper connected to the face rotation shaft, and opening and closing the face outlet with rotation of the face rotation shaft; A large-diameter defroster damper for opening and closing a diameter defroster outlet, connected to the face rotation axis, with rotation of the face rotation axis A small-diameter air outlet damper for opening and closing the small-diameter air outlet, wherein the small-diameter air outlet damper fully closes the small-diameter air outlet when the face damper fully opens the face air outlet; The gist of the present invention is an outlet switching mechanism of a vehicle air conditioner in which the small-diameter outlet damper fully opens the small-diameter outlet when the outlet is fully closed.

[0007]

According to the present invention, air is blown on the windshield.
The defroster outlet to be ejected is the same as the large-diameter defroster outlet.
And a large diameter defroster outlet.
Open each with the froster damper and the small diameter defroster damper.
Because of the closed configuration, a small amount of warm air is
When leaking, use a large diameter defroster damper
Fully close the air outlet and remove the small-diameter defroster damper.
The froster outlet can be fully opened. Thus, large diameter
Fully close the froster damper and fully open the small diameter defroster damper
Because the two-position control is sufficient, the defroster
Defroster Dan at a halfway position where the exit is slightly opened
Stopping the defroster damper compared to stopping the pump
Improves positioning accuracy and reduces the amount of hot air leaking into the windshield
Can be controlled accurately.

Further , in the present invention, the face damper has a
When the chair outlet is fully opened, the small diameter defroster damper is small.
The diameter defroster outlet is fully closed and the face damper
The small diameter defroster damper has a small diameter when the
Since the defroster outlet is fully open, the face
A mode in which the air outlet is fully opened,
In cooling mode where there is no need to leak a small amount of hot air,
The froster damper fully closes the small-diameter defroster outlet,
No small amount of hot air is leaked. Also, face outlet
Fully closed mode, that is, a small amount of hot air to the windshield
In the heating mode that needs to be leaked, the small diameter defroster
The damper fully opens the small-diameter defroster outlet and a small amount of hot air
Leaks are performed, but at this time the face damper is
The face outlet is fully closed and a stable stop is achieved.
Therefore, the small-diameter defroster damper also comes to a stable stop state.

Further, in the present invention, the small-diameter defroster damper for opening and closing the small-diameter defroster outlet is not separately provided but integrated with the face damper.
Space saving in the duct is realized.

[0010]

As described above, according to the present invention, the amount of hot air leaking to the windshield in the heating mode can be accurately controlled, so that the windshield can be reliably prevented from fogging. In addition, since the small-diameter defroster damper and the face damper are connected via the face rotation shaft to form one damper, space saving in the duct can be realized.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. First, a face damper and a small-diameter damper according to an embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a plan view showing a face damper and a small-diameter defroster damper joined to a face rotation shaft, and FIG. 2 is a right side view of FIG. As shown in FIG.
On the face rotating shaft 1, a face damper 2 and small-diameter defroster dampers 3 on both sides thereof are joined. Here, 2a is a sponge attached to the entire surface of the face plate 2b, which makes the face damper 2 and the center face outlet 5 (FIG. 3) adhere closely. 2c
Are reinforcing ribs for enhancing the rigidity of the face plate 2b.

As can be seen from FIG. 2, a predetermined angle θ is provided between the face damper 2 and the small diameter defroster damper 3. Here, 3a is a sponge mounted on the entire surface of the small diameter defroster plate 3b.

Next, a duct portion according to an embodiment of the present invention will be described with reference to FIGS. FIG. 3 is a plan view showing an outlet portion of a duct used in one embodiment, and FIG.
4 is a right side view of FIG. FIG. 5A is a sectional view taken along line AA of FIG. 3, and FIG. 5B is a sectional view taken along line BB of FIG.

As shown in FIG. 3, a duct 4 is formed with a center face outlet 5, and a large-diameter defroster outlet 6 and a small-diameter defroster outlet 7 are formed on both left and right sides in the drawing. . Side face outlets 8 are formed on both right and left sides of the duct 4 (see FIG. 4).

In FIG. 3, two 9a portions and two 9a portions are provided.
A U-shaped recess is formed in each part b.
Further, circular holes are respectively formed at two 10a portions and two 10b portions in the drawing. The face rotating shaft 1 (see FIG. 1) is supported by the two holes 10a and the two recesses 9a, and the two holes 10a are provided.
b and the two concave portions 9b, the large-diameter defroster rotating shaft 1
1 (see FIG. 6) is supported.

Reference numeral 12 denotes a hole for supporting a side face rotating shaft 14 (see FIG. 6) which is a rotating shaft of a side face damper 13 (see FIG. 6) for adjusting the amount of air blown out from the side face outlet 8. is there. Reference numeral 15 denotes a cool air bypass outlet that is opened only when the air mix mode is the Mac school mode and the amount of blown air is to be maximized. The opening and closing of the cool air bypass outlet 15 is performed by a cool air bypass damper (not shown).

Next, the face damper 2, the small-diameter defroster damper 3, the side face damper 13, and the large-diameter defroster damper 16 are assembled to the duct 4 described above.
FIG. 6 shows an apparatus to which the air outlet duct 4a is assembled.
A description will be given with reference to FIG.

FIG. 6 is a plan view of an apparatus in which each damper and the outlet duct 4a are assembled to the duct 4, and FIG.
FIG. 6 and 7, the face damper 2 fully opens the center face outlet 5, the small-diameter defroster damper 3 completely closes the small-diameter defroster outlet 7, and the large-diameter defroster damper 16 fully opens the large-diameter defroster outlet 6. This shows a closed state. That is, the air mix mode is in the cooling mode.

In the cooling mode, the large-diameter defroster outlet 6
Since both the small-diameter defroster outlet 7 and the small-diameter defroster outlet 7 are fully closed, warm air does not leak to the windshield. When the air mix mode is set to the heating mode, the face damper 2 and the small-diameter defroster damper 3 move to the position indicated by the two-dot chain line in FIG. Then, the face damper 2 fully closes the center face outlet 5, and the small-diameter defroster damper 3 fully opens the small-diameter defroster outlet 7. At this time, the large-diameter defroster damper 16 keeps the large-diameter defroster outlet 6 fully closed.

In the heating mode, the small-diameter defroster outlet 7
Is fully open, the warm air can leak from the small-diameter defroster outlet 7 toward the windshield. In addition, the position of the small-diameter defroster damper 3 at this time is such that the small-diameter defroster damper 3 is fully opened and the face damper 2
Is a position where the damper is fully closed, and a position where these dampers can be reliably stopped, so that an appropriate amount of warm air can be leaked to the windshield. That is, in the present embodiment, an appropriate amount of warm air can be leaked toward the windshield in the heating mode.

If it is desired to quickly remove the fogging of the windshield, the large diameter defroster damper 16 may be fully opened to increase the amount of hot air leaking to the windshield. Further, in the present embodiment, the small-diameter defroster damper 3 is a face rotation shaft 1 of a face damper 2 which has been used conventionally.
The space used for the small-diameter defroster damper 3 can be omitted.

In the above embodiment, the angle of attachment of the small diameter defroster damper 3 and the face damper 2 to the face rotating shaft 1 is shifted as shown in FIG. Therefore, when the face damper 2 closes the center face outlet 5, that is, when the face damper 2 is at the position indicated by the two-dot chain line in FIG. 7, the small-diameter defroster damper 3 is also at the position indicated by the two-dot chain line in FIG. In the mode, the small-diameter defroster outlet 7 and the large-diameter defroster outlet 6
The hot air blown to the left can be prevented from being obstructed.

[0024]

[Brief description of the drawings]

[0025]

FIG. 1 is a plan view showing a face damper and a small-diameter defroster damper joined to a face rotation shaft according to an embodiment of the present invention.

[0026]

FIG. 2 is a right side view of FIG.

[0027]

FIG. 3 is a plan view showing an outlet portion of the duct of the embodiment.

[0028]

FIG. 4 is a right side view of FIG. 3;

[0029]

5A is a sectional view taken along line AA of FIG. 3, and FIG. 5B is a sectional view taken along line BB of FIG.

[0030]

FIG. 6 is a plan view showing an apparatus in which each damper and an outlet duct are connected to the duct of the embodiment.

[0031]

FIG. 7 is a right side view of FIG.

[0032]

[Explanation of symbols]

 Reference Signs List 1 face rotating shaft 2 face damper 3 small diameter defroster damper 4 duct 5 center face outlet as face outlet 6 large diameter defroster outlet 7 small diameter defroster outlet 16 large diameter defroster damper

Claims (1)

(57) [Claims] 1. A face outlet formed in the duct for blowing air passing through the duct toward an upper body of an occupant, and a large air outlet formed in the duct for blowing the air toward a windshield. A large-diameter defroster outlet, a small-diameter defroster outlet formed in the duct adjacent to the large-diameter defroster outlet for blowing the air toward the windshield, and rotatably supported by the duct. A face rotation axis, a face damper connected to the face rotation axis and opening and closing the face outlet with rotation of the face rotation axis, a large diameter defroster damper opening and closing the large diameter defroster outlet, A small-diameter defroster connected to a rotary shaft for opening and closing the small-diameter defroster outlet with rotation of the face rotary shaft; A small-diameter defroster when the face damper fully opens the face air outlet, the small-diameter defroster damper fully closes the small-diameter defroster air outlet, and the small-diameter defroster when the face damper fully closes the face air outlet. An outlet switching mechanism for a vehicle air conditioner, wherein a damper fully opens the small-diameter defroster outlet.