DE8703455U1 - Air outlet device - Google Patents

Description

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P r e h

Electro-precision mechanical works

Jakob Preh, successor to GnfcH & Co.

Schweinfurter Strasse 5

Bad Neustadt /Saale, ^05.03.87

02/87CM-CM
Wz/Hi

mftausströmrichtung

The invention relates to an air outlet device with a housing body and a closure flap pivotably mounted on the latter, which can be folded around a pivot axis in front of an air passage opening in the housing body by means of an operating part, closing the latter.

Such air outlet devices are used, for example, in motor vehicles. They are used to regulate the air supply to the vehicle interior.

In DE-Q4 85 35 924, a closure flap for such an air outlet device is described. This closure flap is essentially flat. Its pivot axis runs in the area of its center. Such a structure requires a comparatively large construction depth, since a free space must be provided in the housing body into which the closure flap can swing into its open position. In DE-Q4 85 35 924, the depth of the necessary free space corresponds to the length of the closure flap.

In known air outlet devices, the shutter is operated by the control unit via a lever arrangement. The control unit and

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The closure flap is mounted on separate bearing points. A structure of this type results in a large number of bearing points and individual parts. The assembly is correspondingly complex. In addition, special measures must be taken to ensure the necessary stability.

The object of the invention is to propose an air outlet device of the type mentioned at the outset, in which the closure flap requires only a small amount of free space in the open position and in the closed position and the number of necessary components is reduced.

According to the invention, the above object is achieved in an air outlet device of the type mentioned at the outset in that the closure flap is designed in the shape of a circular ring segment in cross section, that the pivot axis of the closure flap lies in the center of the circular ring segment shape and that the operating part is arranged on the closure flap.

In this air outlet device, the closure flap is not folded into the free space in front of or behind the air passage opening in its open position, but is pivoted along the edge of the free space. The free space in front of the air outlet opening is therefore available for the installation of an air guide blind. This enables a small installation depth of the housing body.

Since the control unit is located directly on the closure flap, separate bearing points do not need to be provided for the closure flap and the control unit. In addition, components for transferring the movement of the control unit to the closure flap are no longer required. The construction and assembly effort is therefore significantly reduced.

It is also advantageous that the closure flap cannot be adjusted by the air flow from either the open or closed position. In the open position, the flap is outside the cross-section of the air passage opening. It is therefore not affected by the air flowing through.

Advantageous embodiments of the invention emerge from the subclaims and the following description of an embodiment. 15

In the drawing show:

Figure 1 an air ejection device in view along the line I-I

according to Figure 2,
20

Figure 2 shows a section along the line II-II of Figure 1

Figure 3 shows a section through the side with the control panel along the line III-III according to Figure 2.

Figures 1 to 3 show an air vent device of a motor vehicle without the air vent blind that can be inserted into it.

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A housing body (U) forms an air inflow duct (2) with an air passage opening (3) and an air outlet duct (4). A bearing pin (6) is provided on one side wall (5) of the housing body (1). A second bearing pin (8) is formed on a removable side wall part (7) opposite the side wall (5).

The bearing pins (6, 8) form the pivot axis for a closure flap (9). This has a circular ring segment-shaped or partially cylindrical cross-section (see Figure 2/. The center of the radius of this circular shape coincides with the pivot axis. The edge (10) of the air passage opening (3) enclosing the air passage opening (3) is adapted to the shape of the closure flap (9) in such a way that, in the closed position shown in the figures, it closes the air passage opening (3) as tightly as possible and overlaps the edge (10).

15

The air outlet shaft (4) is partially cylindrical on the inside (11) of its wall (12) corresponding to the diameter of the closure flap (9).

; 20 A leg (13) is formed on the closure flap (9) which

the bearing pin (6). A wheel-shaped operating part (14) is also formed on the closure flap (9), the radius of which corresponds to the radius of the

\ closure flap (9) is the same and is located in the air outlet shaft (4) k and sits on the bearing pin (8).

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The control unit (14) extends over a portion (19) of the housing body (1).

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On the side wall part (7) there is another J next to the bearing pin (8).

pin (15) which passes through a partially circular ^;

Slot (16) of the control unit (14). This forms a stop

for the rotational position of the control unit (14) and thus also for \

&idigr; the closed position and the open position of the closure flap (9). |

Such a stop can also be created by a corresponding design of the inside (11) of the wall (12), e.g. by a requirement (24). In Figure 2, the opening position of the closure flap (9) is shown in dashed lines. %

I A further pin (17) corresponding to the pin (15) is provided on the side wall (5). The pins (15, 17) serve to support the ^ not shown in detail, which is to be inserted into the air outlet shaft (4) |

the air duct blind. I

? ' The cover flap (9), the leg (13) and the control panel (14) are

made from a one-piece plastic molding. Together with the {

The air outlet consists of the housing body (1) and its side wall part (7).

The spreading device - apart from the air guide blind - consists of only three molded parts.

The control panel (14) is hollow. The control panel (14) can be illuminated from the inside using a lamp (20) arranged on the side wall part (7). Openings (18) are provided on the control side in order to illuminate the respective position of the closure flap (9).

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If the bearing pin (8) is attached to the operating part (14) and not to the side wall part (7) (see Figure 3), then it is extended into the hollow space (21) of the operating part (14). Longitudinal grooves (22) are provided on the bearing pin (8) corresponding to the closed position and the open position of the closure flap (9). A spring-loaded locking body (23) is arranged on the side wall part (7), which locks into one or the other groove (22). This creates a locking mechanism for the closed position and the open position of the closure flap (9).

In the closed position of the closure flap (9) shown in the figures, the air passage opening (3) is tightly closed. A flow pressure acting on the closure flap (9) does not tend to move the closure flap (9) from its closed position, since the pivot axis formed by the bearing pins (6, 8) is projected centrally between the longitudinal edges of the air passage opening (3).

When the closure flap (9) is opened using the control unit (14), the closure flap (9) swings into the position shown in dashed lines in Figure 2. It moves smoothly along the inside (11). Since only two bearing points are provided, the movement of the closure flap (9) is smooth. Towards the end of the opening movement, the locking body (23) engages and secures the end position. In the open position, the closure flap (9) takes up practically no space in the air outlet shaft (4) since it lies close to the inside (11). The air passage opening (3) is free over its entire cross-section. The air flowing through does not tend to move the closure flap (9) from its open position.

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From one position to the other position, the control unit (14) is

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about 90. Accordingly, the circular ring segment

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shape of the closure flap (9) is pivoted by approximately 90. In order to

To achieve a secure covering of the edge (10) in the closed position, &ogr;
the edge (10) is designed to be narrower than 90 in relation to the pivot axis.

The radius of the closure flap (9) is selected according to the desired radius of the wheel-shaped operating part (14). If necessary, the radius of the operating part (14) can also be larger than the radius of the closure flap (?).

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Reference list 02/87 "'(M

1 Housing body 2 Air intake shaft 3 Air passage opening 4 Ventilation inlet shaft 5 Side wall
* 6 Bearing journal 7 Side wall part 8th Bearing journal 9 Closing flap 10 edge 11 inside 12 Wall 13 leg 14 Control panel 15 cone 16 slot 17 cone 18 openings 19 Sub-area 20 Lamp 21 cavity 22 Longitudinal grooves 23 Locking body 24 Request

Claims (8)

Preh .. Electro-precision mechanical Jfeike* Jakob Preh, Nachf. GmbH«& Co. Schweinfurter Strasse 5 Bad Neustadt/Saale, 05.03.87 02/87CM-CM
Wz/Hi Air diffuser Air discharge device with a housing body and a closing flap pivotably mounted on the latter, which can be folded by means of an operating part about a pivot axis in front of an air passage opening of the housing body, closing the latter,
characterized, that the closure flap (9) is circular ring-shaped in cross-section, that the pivot axis (6, 8) of the closure flap (9) is located at the center of the radius of the circular ring segment shape and that the BG die part (K/ is arranged on the closure flap (9). 10 2. A water jet device according to claim 1,
characterized, that the operating part (14) is wheel-shaped and has the same radius as the circular segment shape of the closure flap (9). 15 3. Air ejection device according to claim 1 or 2, characterized in that the wheel-shaped operating part (14) and thus the closure flap (9) is pivotably mounted on the housing body (1). 20 4. Djftftusstrcmvorrichtung according to claim 3,
characterized, that a side wall part (7) is attached to the housing body (1), on which the wheel-shaped operating part (14) is mounted. — 2 — * • ■ · » • · · at 5. Air outlet device according to one of the preceding claims, characterized in that a leg (13) is arranged on the closure flap (9) and is pivotably mounted on the housing body (1) opposite the operating part (14). 6. Air ejection device according to one of the preceding claims, characterized in that that the closure flap (9), the operating part (14) and the leg (13) are formed from a one-piece molded part. 7. Air ejection device according to one of the preceding claims, characterized in that a pin (15) is arranged on the side wall part (7) which passes through a slot (16) of the wheel-shaped operating part (14), the ends of which form stops for the movement of the closure flap (9). 8. Air ejection device according to one of the preceding claims, characterized in that that an air outlet shaft (4) is formed in the housing body (1), the inner side (11) of which is cylindrical corresponding to the radius of the closure flap (9). 3 -