JP4257523B2 - Air outlet for vehicles - Google Patents

Description

  The present invention relates to an air outlet of an air conditioner provided in an automobile, and relates to an improvement of an air outlet that reliably directs the direction of air blown from the outlet to a passenger with a simple structure.

2. Description of the Related Art Conventionally, in a vehicle such as a passenger car, an air conditioner is generally provided with a blowout opening in an instrument panel, and air is sent into the interior of the vehicle compartment from the blowout opening. The shape of the outlet is conventionally square or round.
For example, Patent Document 1 (Japanese Patent Application Laid-Open No. 2003-2049) proposes a structure of a blowing port with good operability that effectively uses the opening area of the blowing port. Here, the cylindrical garnish and the case substrate are integrated, a cylindrical rotating body is rotatably provided inside, a plurality of differently shaped fins are attached to the inner peripheral surface of the rotating body, and the axial center of the fin A recess for accommodating a longer fin end is formed, and when the air outlet is fully opened, the fin end is accommodated in the recess to facilitate smooth fin operation, and a plurality of fins are connected to each other. Since the fins are arranged in parallel and the surface of the fin is flat, no turbulent flow is generated, noise is reduced, and differently shaped fins can be cooperably closed when the outlet is fully closed. A structure is disclosed.
JP 2003-2049 A

  As described above, the air outlet of the conventional air conditioner is normally arranged in the instrument panel, but the air outlet arranged in the center of the instrument panel is particularly related to the layout of the audio device, the heater control device, etc. In addition, there is a problem in that the air outlet is directed toward the target point, that is, in the direction above the periphery of the driver's or passenger's waist.

Explaining this with reference to FIG. 3, the air outlet 02 of the air conditioner arranged at the center of the instrument panel 01 is related to the layout relationship with the audio device, the heater control device, etc., and the styling of the interior parts, etc. Therefore, the fins are inevitably arranged at the upper position as shown in the figure, and as described above, the plurality of fins are arranged in parallel to each other, and the fin surfaces are formed flat. Can be rotated only in the range of θ around the axis of symmetry s of the outlet.
On the other hand, the aim of the air distribution direction is the passenger's waist circumference m, and in the conventional outlet, there is a tendency for air to flow badly around the fins attached to the lower side, and the range in which air distribution is possible is unavoidable There is a drawback that it is directed above the target eye position m. Further, in the case of a round outlet, there is a drawback that even if an attempt is made to adjust the wind direction, the fins interfere with each other and the actual opening area becomes smaller than the set value.
In order to cope with this drawback, as in the fin illustrated in Patent Document 1, a means of shortening the length of the fin to reduce the pressure loss and prevent the opening area from being reduced can be considered. On the contrary, the wind direction is dispersed, and it becomes difficult to control the wind direction in a desired direction.

  In view of the problems of the conventional technology, the present invention provides an air outlet that has an extremely simple structure, expands the range of the air blowing direction, prevents pressure loss due to fins, and secures an effective air volume. With the goal.

The present invention achieves such an object, and its means is an air outlet of an air conditioner arranged on an instrument panel arranged in front of the inside of the vehicle body, and three or In the air outlet for vehicles in which four fins are rotatably arranged, the uppermost fin located on the outermost side when the air outlet is closed has a planar cross section and shortening the air blowing direction upstream side portion and the air blowing direction downstream about half against arranged fins bent downward, the air blowing direction downstream side about the relative fins disposed second from the bottom It is characterized in that the half is bent downward and the blowout air is directed toward the passenger's waist .

According to the present invention, the range of the wind direction can be expanded downward, and air can be applied to the target (periphery waist periphery) m.
Further, by shortening the upstream side portion of the fins arranged in the air blowing direction, the pressure loss is reduced around the fins in the lowermost part, the effective opening area is not reduced, and the effective air volume is reduced. Can be secured.

In addition, the downward air distribution range achieved by the above-described configuration can be achieved by attaching the fin to a rotating body that is slidably contacted with the inner peripheral surface of the casing of the air outlet and is rotatable about the air outlet direction. Can be expanded in the direction of 360 °.
The number of fins arranged at the normal outlet is generally 3 to 4. When the number of fins is three, the fin arranged at the top is almost flat, ensuring an upward air distribution range, and when rotated to a position to close the outlet, the outermost Will be located. When the number of fins is four, the uppermost fin is configured flat and given the role of opening and closing the outlet as described above, but the lower fin is bent downward and the wind direction is changed. It may be given the role of expanding downward or may be configured flat. However, as described above, it is essential that the lowermost fin bends the downstream portion in the air blowing direction downward.

Further, by making the air blowing direction length of the fin arranged second from the bottom substantially the same as the diameter of the rotating body, the directionality of the wind direction, the expansion of the angle, and the wind direction control are further ensured. Can do.
In addition, the cross-sectional shape of each fin may be set as appropriate. For example, it may be a smooth curved surface (curved surface) that does not cause turbulent flow of air flowing on the surface, or has an inflection point. However, it may be a curved surface (bent surface) that can be easily punched.

  Further, the air outlet to which the present invention is applicable is not limited to the one arranged at the center portion of the instrument panel, and for example, the one arranged at the window side in the vehicle is also applicable. Further, when the fin is rotated to the position where the blowout opening is closed, not only the type in which the blowout opening is closed only by the fin arranged at the uppermost position, but also as shown in FIG. It can be applied to a type in which the fins cooperate to close the outlet.

  As described above, according to the present invention, with respect to the uppermost fin located on the outermost side when the air outlet is closed, the air blow direction is downstream from the rotation shaft of the fin arranged at least second from the bottom. By bending the side part downward, it is possible to expand the range of the air distribution direction with a simple and inexpensive structure, aiming at the desired aim, and to blow out the fins arranged at the lowermost position By shortening the upstream portion in the direction, the pressure loss can be reduced, the effective opening area of the outlet can be secured, and the effective air volume can be secured.

Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in this example are not intended to limit the scope of the present invention only to specific examples unless otherwise specified. Only.
FIG. 1 is a vertical elevational view of an air outlet according to a first embodiment of the present invention, and FIG. 2 is a transverse side view of the first embodiment.

1 and 2 showing the first embodiment, 1 is an instrument panel disposed in front of the inside of the vehicle body, 2 is an air outlet of an air conditioner disposed at the center of the instrument panel 1, and a is air. This is the blowing direction. 3 is a casing constituting the outlet body, 4 is a rotating body that is slidably contacted with the inner periphery of the casing 3, and three fins 5 a, 5 b, 5 c are centered around an axis n in the inside. It is attached so that it can rotate integrally.
3a is a fitting groove provided in the center of the casing 3, and a protrusion 4a provided in the center of rotation of the rotating body 4 is rotatably inserted. 3b is a blow-out opening provided in the casing 3, 4b is a lining attached to the inner surface of the rotating body 4, and when the fins 5a and 5b are operated to close the blow-out opening, as shown by a one-dot chain line in FIG. The periphery of the fin contacts the lining 4b and closes the outlet.

  In such an apparatus, the fin 5a is located at the top and has a substantially planar cross section, and the fin 5b has the longest cross sectional length and is formed to have a length substantially equal to the diameter of the rotating body. In addition, about half of the downstream side in the air blowing direction is bent downward. Further, the fin 5c is bent downward about half on the downstream side in the air blowing direction, and shortened on the upstream side as shown in the figure.

  In the first embodiment, the rotating body 4 can rotate in any direction around the protrusion 4 a, and the fins 5 a, 5 b, 5 c attached to the rotating body 4 are integrated with the rotation of the rotating body 4. Can be rotated to any position. Furthermore, the fins 5a, 5b, 5c are rotatable about the axis n and the center line l. In FIG. 1, the solid line indicates a state in which the fins 5 a, 5 b, and 5 c open the outlet, and the alternate long and short dash line indicates a state in which the outlet is closed.

According to such an apparatus, the fin 5c is bent downward on the downstream side in the air blowing direction, so that the air distribution angle can be greatly widened to θ2, compared to the conventional θ1, and the aim that could not be achieved conventionally. The wind can be easily directed to (for example, the waist periphery m of the passenger).
Further, since the upstream side of the fin 5c in the air blowing direction is shortened as shown in the drawing, the air pressure loss can be reduced and an effective air volume can be secured.
Furthermore, according to the present embodiment, since the plurality of fins 5a, 5b, 5c are attached to the inside of the rotating body 4, by rotating the rotating body in a desired direction, the expanded air distribution range is 360 °. Can be deployed in the direction.
In this embodiment, the fin is attached to the rotating body 4, but it may be attached to a fixed casing.

  In the first embodiment, the number of fins is three, but it may be four, for example. Even in this case, at least the downstream side of the air blowing port of the lowermost fin is bent downward, and the upstream side of the air blowing direction has a shortened cross-sectional shape, and more preferably, the downstream side of the second fin from the bottom in the air blowing direction is more preferable. It is necessary to bend downward.

  According to the present invention, an air distribution range of an air outlet of an air conditioner arranged in a vehicle can be expanded with a very simple structure, so that air can be distributed in a desired direction for a passenger, and There is an advantage that an effective air volume can always be secured without incurring pressure loss.

It is a vertical elevation view of the air outlet according to the first embodiment of the present invention. It is a cross-sectional side view of the first embodiment. It is explanatory drawing which shows the wind distribution situation of the conventional air blowing outlet.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Instrument panel 2 Air outlet 3 Casing 4 Rotating body 5a, 5b, 5c Fin

Claims (3)

An air outlet for an air conditioner arranged on an instrument panel arranged in front of the vehicle body, and having three or four fins rotatably arranged facing the air outlet passage In the mouth
The uppermost fin located on the outermost side when the air outlet is closed has a planar cross section, and the upper part of the air outlet direction is shortened for the fin arranged at the lowermost part, and About half of the downstream side in the air blowing direction is bent downward, and about half of the fin located second from the bottom is bent about half on the downstream side in the air blowing direction, and the blown air is directed toward the passenger's waist An air outlet for a vehicle characterized by being configured as described above . It has a rotating body that is slidably contacted with the inner peripheral surface of the casing of the air outlet and is rotatable around a rotation axis that is orthogonal to the air blowing direction, and the fin is attached to the rotating body. The air outlet for vehicles according to claim 1. The air blowout port for a vehicle according to claim 2, wherein a length of an air blowout direction of the fin arranged second from the bottom is substantially equal to a diameter of the rotating body .

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