Ventilation – Vehicle – Having inlet airway
Reexamination Certificate
1999-08-09
2001-03-27
Joyce, Harold (Department: 3744)
Ventilation
Vehicle
Having inlet airway
C454S320000
Reexamination Certificate
active
06206777
ABSTRACT:
The present invention relates to a board-mounted nozzle for ventilation and climate control installations which is intended primarily for motor vehicle compartments and which comprises a frame supporting parallel interconnected guide vanes which are hingedly mounted in the frame for pivotal movement to direct an air flow passing through the frame.
In ventilation and climate control installations in for instance motor vehicles, manually adjustable nozzles are used to direct the air flow in the compartment as desired. Normally, nozzles used for this purpose comprise a frame and articulated guide vanes which are mounted in the frame for pivotal movement therein. As rule, the guide vanes are disposed in parallel relationship and may also be arranged in two layers the directions of extension of which are at right angles to one another. One problem encountered in guide vanes of this kind is that they may generate noise as the passing air flow make them vibrate and shake. To prevent this from happening springs of some kind are sometimes used, urging the guide vanes against one of the side walls in which they are mounted. A nozzle of this kind is described for instance in Wo 93/23261.
However, this type of nozzles often are difficult to mount, which makes them expensive. Fulcrum pins may be provided at each And face of the guide vanes to be inserted into recesses formed for that purpose in opposite faces of the frame. To mount guide vanes of this kind, they must be bent into arcuate shape to make it possible to insert them in position. This mounting method is quite a complicated one, and in addition it involves risks that the inner face of the frame will be scratched.
Alternatively, one or possibly both pivot pins could be replaced by separate pivot pins. The use of such separate pins facilitates the mounting of-the vanes, since they can be placed in position without first having to be bent, whereupon the pivot pins may be inserted through apertures formed in the frame and further into recesses formed for the purpose in the guide vanes. However, this is still a comparatively complicated mounting process, particularly when a spring means of some kind is to be applied between the guide vanes and one of the frame walls. Furthermore, this solution is conditioned on a large number of the components, such as pins and springs, being made from a different material than the rest of the nozzle, for example from a metal. This is unfavourable from an environmental point of view, since it reduces the recyclability of the product.
The object of the present invention is to completely or at least partly eliminate the above problems inherent in prior-art technology.
This object is achieved by means of a board-mounted nozzle with guide vanes, as defined in claim
1
.
The invention will be described in more detail for exemplifying purposes by way of one embodiment and with reference to the accompanying drawing, wherein,
FIG. 1
is a view, partly exploded, of a board-mounted nozzle in accordance with the invention,
FIG. 2
is a view of a guide vane for use with the nozzle in
FIG. 1
, and
FIG. 3
is a cross-sectional view taken on line III—III of FIG.
1
.
REFERENCES:
patent: 4545294 (1985-10-01), Dayus
patent: 5176571 (1993-01-01), Fujihara et al.
patent: 3-84357 (1991-04-01), None
patent: 4-55657 (1992-02-01), None
Eriksson Harry
Svensson Patrik
Brooks & Kushman P.C.
Joyce Harold
Lear Corporation
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