Ventilation – Vehicle – Having inlet airway
Reexamination Certificate
1999-06-16
2001-01-23
Joyce, Harold (Department: 3744)
Ventilation
Vehicle
Having inlet airway
C454S316000
Reexamination Certificate
active
06176775
ABSTRACT:
FIELD OF THE INVENTION
The invention concerns a fresh air nozzle device for the passenger compartment of a vehicle, comprising a housing which at the outlet side is provided with slats for guiding the air flow and with a slat-adjusting member, wherein at the outlet side the housing has a circular opening end portion at which there is rotatably provided an adjusting ring which forms the slat-adjusting member and which is connected to the slats.
BACKGROUND OF THE INVENTION
Fresh air nozzle devices are known, which are provided at the outlet side with an opening of rectangular cross-section. Those fresh air nozzle devices usually have horizontal slats and vertical slats which are displaced in the longitudinal direction with respect to the horizontal slats. In such an arrangement the one slats are for example integrally connected to the housing while the other slats are disposed pivotably in the housing. In such an arrangement for example the housing as a whole is pivoted, to pivot the first-mentioned slats.
A fresh air nozzle device of the kind set forth in the opening part of this specification is known from DE 36 10 894 A1. In that known fresh air nozzle device the housing which has slats for deflecting the air flow and which is rotatable about the central axis of an air duct for altering the discharge flow direction comprises a distributor ring and a push-on casing portion which projects therefrom in a collar-like configuration, with flexible casing segments for pushing on to the air duct. The slats are disposed in the region of the distributor ring of the housing.
SUMMARY OF THE INVENTION
GB-A-13 19 449 discloses a fresh air nozzle device for the passenger compartment of a vehicle, having a cylindrical housing with an adjusting ring. Provided at the outlet side of the cylindrical housing, where there is the adjusting ring, are slats which are adjustable by means of the adjusting ring, that is to say which can be set in position as desired in order to be able to provide for a specifically controlled air guidance effect. An adjusting knob is rotatably mounted centrally at the outlet side of the cylindrical housing and is connected to two semicircular flap elements. Each of those two flap elements is formed with a pin projecting into an associated slot in the cylindrical housing. The two slots are inclined relative to the peripheral direction of the housing so that rotation of the adjusting knob causes displacement of the two flap elements between a closure position and an open position. The slats of that known fresh air nozzle device are adjustable only in the peripheral direction of the housing.
The object of the present invention is to provide a fresh air nozzle device of the kind set forth in the opening part of this specification, which is of a simple structure from the point of view of the production engineering involved, wherein slat adjustment is effected by means of a slat-adjusting member which delimits the outlet opening.
In accordance with the invention, in a fresh air nozzle device of the kind set forth in the opening part of this specification, that object is attained in that the opening end portion of the housing is provided with two diametrally oppositely disposed longitudinal slots which are oriented in the peripheral direction of the housing and through each of which extends a respective connecting pin which are in axial alignment with each other and by means of which the adjusting ring is connected to an inner ring which is connected to the slats. In this arrangement the slats can be formed in one piece with the inner ring. That is desirable from production points of view, because it is then not necessary for the slats to be individually handled and connected to the inner ring.
In the fresh air nozzle device according to the invention it is desirable if the opening end portion of the housing is formed on the inside with a concave ring portion which has a spherical curvature and the center of curvature of which is defined by the point of intersection of the central axis of the two connecting pins with the longitudinal axis of the housing, and if the inner ring is formed on the outside with a convexly curved external contour which is adapted in shape to the concave ring portion of the housing. Such a configuration provides so-to-speak a ball-joint arrangement of the inner ring with the slats in relation to the opening end portion of the housing of the fresh air nozzle device according to the invention so that the slats which are oriented in parallel relationship with each other can be jointly adjusted as desired.
EMBODIMENTS
Another possibility provides that, in the case of the fresh air nozzle device according to the invention, the slats provided in the inner ring are jointly pivotably movable. With such a configuration of the last-mentioned kind, the slats are pivotable as desired about the longitudinal axis of the housing and can be rotated in relation to the inner ring. Such a configuration in accordance with the invention therefore also permits specifically controlled guidance for the air flow issuing from the fresh air nozzle device.
Further details, features and advantages will be apparent from the following description of two embodiments of the fresh air nozzle device according to the invention, perspective views of part of each of which are shown in the drawing.
REFERENCES:
patent: 5746651 (1998-05-01), Arajs et al.
patent: 36 10 894 A1 (1987-10-01), None
patent: 11 319 449 (1973-06-01), None
patent: 1 385 874 (1975-03-01), None
Dr. Franz Schneider Kunststoffwerke GmbH & Co.
Hoffmann & Baron , LLP
Joyce Harold
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