Air vent for the conditioning air of motor vehicles with flow orientation means having a modular structure

Abstract: Air vent comprising flow orientation means constituted by two mutually perpendicular rows of vanes (14-15); each vane (14) of one row has a plurality of vanes (15) of the other row associated with one of its faces; these last vanes are pivoted to corresponding tabs (16) of the vane (14) on one side and are pivoted, on the other side, to a connecting rod (17) which is articulated to an actuation rod (21) which orientates both rows of vanes. Each vane (14) of the first row, with the vanes (15) of the second row and the connecting rod (17) associated therewith, forms a modular assembly (20) which is in turn pivoted to the body of the air vent by means of pivots (18) supported by the vane (14) of the first row.

Description: The present invention relates to an air vent for the conditioning air of motor vehicles of the type as disclosed in DE-A-3 835 614 and as defined in the preamble of the appended claim 1, which comprises flow orientation means which can be actuated manually by means of at least one button or slider protruding outside the air vent. Known air vents of the specified type currently use, to direct the flow of air, two rows of vanes, one arranged behind the other, which can be orientated along mutually perpendicular axes, respectively a vertical one and a horizontal one. The vanes of one row are rigidly connected to a frame which can oscillate about an axis; the vanes of the other row, on which the slider acts, are individually pivoted to said frame and can rotate about respective axes which are at right angles to the first one. This known arrangement entails numerous problems, which include mainly: a considerable structural complexity, with consequent difficulties in assembly, which lead to higher manufacturing costs and lower reliability in operation; and an imperfect adjustment of the flow which is a consequence of the rearward arrangement of one row of vanes with respect to the other. This known structural arrangement furthermore does not allow to use a single slider to orientate both vane rows. The aim of the present invention is essentially to eliminate these problems and, within the scope of this general aim as defined by the claims, an important object is to provide an air vent for conditioning air with flow orientation means having a double row of vanes, said means being structurally simplified and at the same time having an improved functionality. Another particular object of the invention is to provide an air vent wherein the flow orientation means are constituted by modular units which can be mass-produced and can be composed in diversified quantities in order to form air vents having correspondingly differentiated dimensions. A further particular object of the invention is to provide an air vent with flow orientation means having a modular structure which can be easily assembled, to the advantage of economy in manufacture and therefore of production costs. The invention also has the important object of simplifying the method for orientating the vanes, allowing to use a single button to move both rows. According to the invention, there is provided an air vent for the conditioning air of motor vehicles with flow orientation means constituted by a first row and by a second row of mutually perpendicular vanes, in which the first row of vanes is hinged to a body of the air vent about first parallel axes such that the vanes of said first row are together pivotally movable about said first axes. The air vent according to the invention is characterized in that each vane of the second row is hingedly connected to a vane of the first row such that the second vanes are pivotably movable with respect to the first vanes about second parallel axes which are perpendicular to the first axes. In one preferred embodiment, for each first vane a connecting rod is hingedly connected to respective second vanes which are hingedly connected to the first vane, so that a modular assembly is formed by the first vane, the respective second vanes, and the connecting rod. Advantageously, according to the invention, each modular assembly is made of thermoplastic polymeric material obtained by monolithic molding and the hinges which articulate the vanes of the second row to the vanes of the first row and to the connecting rod are of the so-called "film" type. Further characteristics and advantages of the present invention will become apparent from the following detailed description of a preferred embodiment thereof, and with reference to the accompanying drawings, which are given only by way of non-limitative example and wherein: figure 1 is a front elevation view of the air vent according to the present invention; figure 2 is a sectional view, taken along the plane II-II of figure 1; figure 3 is a sectional view, taken along the plane III-III of figure 1; figure 4 is a partial sectional view, similar to figure 3, illustrating the vertical vanes in the position for the lateral orientation of the flow; figure 5 is a perspective view of a pair of modular assemblies arranged side by side and of the kinematic actuation means. The air vent according to the invention comprises a body 10 shaped like a parallelepiped with a front base 11 which is provided with an opening 12 with a grille for the passage of air, on the side of which there is an actuation button 13 described hereinafter. The flow orientation means are arranged in the body 10 and are constituted by a first row of vanes 14 and by a second row of vanes 15; in the illustrated example, the vanes of the first row are arranged vertically and those of the second row are arranged horizontally (with reference to the position in which the air vent is installed). According to the invention, each vertical vane 14 of the first row has a plurality of horizontal vanes of the second row 15, for example three mutually superimposed horizontal vanes, associated with one of its faces. Each horizontal vane is pivoted, on one side, to a corresponding tab 16 of the vertical vane 14 and, on the other side, to a connecting rod 17. The set constituted by each vertical vane 14 with the horizontal vanes 15 and the connecting rod 17 associated therewith forms and constitutes a modular assembly 20 which is in turn pivoted to the body 10 of the air vent by means of pivots 18 which are provided at the ends of the vertical vane 14. The modular assemblies such as 20 are preferably made of thermoplastic polymeric material and are obtained by monolithic molding; the articulation hinges 19 between the wings 16 and the horizontal vanes 15 and between said horizontal vanes and the rod 17 are of the "film" type, constituted by a continuous film made of the same polymeric material monolithically with both hinged parts. The modular assemblies 20 can be composed in a variable number so as to obtain air vents having a correspondingly differentiated horizontal extension, and are assembled mutually side by side as shown in the detail view of figure 5. The connecting rods 17 of the assemblies arranged side by side are articulated to a second actuation rod 21 which is provided with appropriate spherical seats 22 which can be fitted in a snap-together manner on corresponding spherical heads of the rods 17. A lever 23 cooperates with the rod 21 and is supported, with the possibility of axial sliding in the direction of the arrows "f", by a pivot 24 which is rigidly coupled to the body 10. The lever 23 is provided, at one of its ends, with the actuation button 13 which protrudes from the base 11 and has its other end rotationally coupled, by means of a slot, to a terminal pivot of the rod 21 which is provided with shoulders 25 in order to move said rod vertically in the direction of the arrows "F" and horizontally in the direction of the arrows "f". It is easily understood that the lateral movement of the button 13 leads to a corresponding rotation of the vertical vanes 14 about the axes of the pivots 18, whereas the vertical movement of said button leads to a corresponding rotation of the horizontal vanes 15 about the axis of the hinges 19. It should be noted that the trailing edge of the horizontal vanes 15 is slightly behind the trailing edge of the vertical vanes 14, so that aerodynamic efficiency is substantially the same for both rows of vanes. Naturally, without altering the concept of the invention, the details of execution and the embodiments may be varied extensively with respect to what is described and illustrated by way of non-limitative example without thereby abandoning the scope of the invention. In particular, the vanes 14, instead of being vertical, may be horizontal, and accordingly the vanes 15 may be vertical instead of horizontal. Where technical features mentioned in any claim are followed by reference signs, those reference signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly such reference signs do not have any limiting effect on the scope of each element identified by way of example by such reference signs.

Claims: Air vent for the conditioning air of motor vehicles with flow orientation means constituted by a first row (14) and by a second row (15) of mutually perpendicular vanes, the first row of vanes being hinged to a body (10) of the air vent about first parallel axes such that the vanes (14) of said first row are together pivotally movable about said first axes, characterized in that each vane (15) of said second row is hingedly connected to a vane (14) of said first row such that the second vanes (15) are pivotably movable with respect to the first vanes (14) about second parallel axes which are perpendicular to said first axes. Air vent according to claim 1 wherein a plurality of vanes (15) of the second row are pivoted to a single vane (14) of the first row. Air vent according to any one or more of the preceding claims, further comprising for each second vane (15) a tab or wing (16) which protrudes from the face of a respective first vane (14) and to which a first end of the second vane (15) is hingedly connected. Air vent according to claim 3, comprising for each second vane (15) an articulation hinge (19) connecting the first end of the second vane to said tab or wing (16). Air vent according to any one or more of the preceding claims, comprising for each first vane (14) a connecting rod (17) hingedly connected to a second end of respective second vanes (15) which are hingedly connected to said each first vane (14), a modular assembly (20) being formed the first vane (14), the respective second vanes (15) connected thereto, and the connecting rod (17). Air vent according to claim 5, comprising for each second vane (15) an articulation hinge (19) connecting the second end of the second vane to said connecting rod (17). Air vent according to any one or more of claims 4-6 wherein each modular assembly (20) is made of thermoplastic polymeric material and is obtained by monolithic molding; the hinges (19) which connect the vanes of the second row to the vane of the first row and to the connecting rod being of the film type. Air vent according to any one or more of claims 5-7 further comprising an actuation rod (21) to which each said connecting rod (17) is pivoted with a spherical pivot (22) and which orientates both rows of vanes. Air vent according to claim 8 wherein the actuation rod (21) is controlled by a lever (23) which can perform a translatory motion and oscillate, which is provided with a single actuation button (13) at one end, and which has its other end rigidly rotationally coupled to the actuation rod. Air vent according to any one or more of the preceding claims wherein the trailing edges of the vanes of the first and second rows are co-planar or substantially co-planar.

Inventors: DAVICO CLAUDIO, GIORGINI GERARDO, VERCESI PIERCARLO, DAVICO, CLAUDIO, GIORGINI, GERARDO, VERCESI, PIERCARLO
Applicants: FOGGINI PROGETTI, FOGGINI PROGETTI S.R.L.
Application year: 1993
Main classification: B60H1
IPC codes: B60H1