AUTOMOTIVE AIR VENTILATORS

The air diffuser system with a grid, cage, and housing, using a 4-axis configuration, addresses assembly complexity and noise issues in vehicle vents by enabling flexible air distribution through oscillating movements, resulting in cost-effective and noise-controlled air diffusion.

FR3145029B1Active Publication Date: 2026-04-10GERARD RHEAU
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Patent Information

Authority / Receiving Office
FR · FR
Patent Type
Patents
Current Assignee / Owner
Filing Date
2023-01-13
Publication Date
2026-04-10

AI Technical Summary

Technical Problem

Existing air vent systems in motor vehicles face high assembly complexity and noise issues due to the overlapping of horizontal and vertical fins, leading to increased costs and difficulty in controlling noise.

Method used

An air diffuser system comprising a grid, cage, and housing, which allows air diffusion through oscillating movements without adjustable fins, using injection-molded plastic materials and a 4-axis configuration to distribute air in all directions, eliminating assembly operations and reducing noise.

Benefits of technology

The system achieves low-cost production, noise control, and improved air distribution flexibility, while reducing assembly complexity and noise, enabling efficient air diffusion in the vehicle compartment.

✦ Generated by Eureka AI based on patent content.

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Abstract

In summary, this concept involves circulating air within the passenger compartment of a motor vehicle through vents located on the dashboard on the driver's side, in the center, on the passenger side, and at the rear. The invention lies in the diffusion of air through a grille that oscillates up and down, and from right to left or left to right. (This device offers the same ventilation as previous techniques.) This grille is assembled in a cage by two axes, forming the barrel, which is itself assembled by two axes in the housing or air duct. This invention offers very low costs since it eliminates the complex assembly of horizontal and vertical fins and their kinematics. It allows for customization of the vehicle's interior by the grille's face, which can take on any compatible geometric shape. Logos and emblems can be displayed. This vent can be composed of several barrels.
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Description

Title of the invention: AIR VENTILATORS FOR AUTOMOBILES

[0001] The present invention relates generally to air vents intended to diffuse into the passenger compartment of a motor vehicle from the heating, ventilation and air conditioning system of said vehicle. PREVIOUS TECHNIQUES:

[0002] Air is diffused by the overlapping of horizontal and vertical fins assembled in a housing by the axis located at each of their ends. A control knob allows their up / down and left / right movement. This implies a substantial and sometimes complex assembly depending on the shape of the housing.

[0003] This results in high costs and unwanted noise that is difficult to control. DESCRIPTION OF THE INVENTION:

[0004] The present invention therefore aims to allow, without an adjustable fin, air diffusion in the passenger compartment, sweeping the air in all directions by oscillating movements from top to bottom or bottom to top and from right to left or from left to right.

[0005] The aerator consists of:

[0006] -1 Grid

[0007] -1 cage

[0008] -1 Housing SCHEMAS:

[0009] 2 Schematic diagrams describe the functionality of this new process. MATERIALS:

[0010] Injection-molded plastic materials. SUBJECTS:

[0011] Could be:

[0012] Grid: ABS

[0013] Cage: Bayblend T45 (registered trademark)

[0014] Housing: PP charged.

[0015] It is the client designers who decide which materials to use. COLORS:

[0016] Virtually all colors are possible

[0017] The automobile industry favors black because it is the color that integrates best into the dashboard.

[0018] 1 / 6 FUNCTIONAL:

[0019] -GRID:

[0020] It represents the core of the patent.

[0021] Different systems can enable it to oscillate movements.

[0022] The 4-axis configuration appears to be the simplest.

[0023] A solution using 2 bushed or unbushed axes, with or without a notching system, can be also considered since it eliminates the intermediate cage.

[0024] Several other configurations can be used.

[0025] (These last two still need to be optimized)

[0026] The front of the grid can be flat, concave or angular.

[0027] The perpendicular perforations of the grid can have any geometric shape, aesthetic or classic such as: (round, square, rectangular, trapezoidal......)

[0028] Acronym and logo may appear.

[0029] The main function of the grille is to distribute air to the front passengers of the vehicle through vents located on the dashboard.

[0030] The 2 front passengers independently, according to their needs, direct the air by rotating the grille up and down or down and up following an oscillating range of 0 to 20° for the top and 0 to 20° for the bottom with a blind spot of the order of 7mm for a grille of 86 mm in length.

[0031] The maximum opening angle being on the order of 30° implies a cage width of 24mm. With a blind angle of on the order of 20mm for a grid 86mm long.

[0032] A stop system ensures compliance with angular displacements and prevents air from passing between the grid and the cage during maximum displacements.

[0033] - CAGE:

[0034] Can have any compatible geometric shape: round, square, rectangular, trapezoidal...

[0035] The cage's main function is to diffuse air onto the front passengers of the vehicle through vents located on the dashboard.

[0036] The 2 front passengers independently, according to their needs, direct the air by rotating the cage from right to left or left to right following an oscillating movement of 0 to 20° for the right and from 0 to 20° for the left with a blind angle of the order of 7 mm for a cage of 92 mm in length.

[0037] The maximum opening angle being on the order of 30° implies a cage width of 24 mm. With a blind angle of on the order of 20 mm for a cage 92 mm long.

[0038] Two stops ensure compliance with angular deflections and prevent air from passing between the grid and the cage during maximum deflections 2

[0039] - CASE:

[0040] May have any compatible geometric shape: round, square, rectangular, trapezoidal.......

[0041] By their articulations, these 3 components (grille, cage, housing) are the only constituent elements of the patent. They ensure the diffusion of air in all directions by oscillating movements from top to bottom or bottom to top and from right to left or left to right.

[0042] The grid assembled in the cage, by the axis located at each end of the grid ensures by a progressive movement of rotation limited angularly to distribute the air from top to bottom or from bottom to top.

[0043] The cage with the assembled grid is inserted into the housing by the axis located at each end of the cage. It allows, by a progressive rotational movement limited angularly, the distribution of air from D to G or from G to D.

[0044] This new aerator offers the possibility of being made up of several grids assembled in their cages.

[0045] Indeed, dashboards have shapes which sometimes require air distribution in different directions due to limited space or to meet manufacturer design requirements.

[0046] This cage grid pair perfectly meets these requirements with an aesthetic advantage.

[0047] Indeed, the superposition or DG pairing of the grid / cage assembled in the A case with an angular or narrow shape perfectly meets these criteria. ADVANTAGES OF THIS NEW PROCESS:

[0048] -Very low cost price since this process virtually eliminates all assembly operations

[0049] -Allows for possible manufacturing in France, facilitating delivery flows and consequently reducing storage volumes and transport costs.

[0050] It also offers the advantage of creating jobs.

[0051] -Material thicknesses and the choice of materials adapted to customer requirements will be more economical since they will not have to respond to the bending of the fins.

[0052] -Elegant appearance.

[0053] -Control of background noise:

[0054] 4 axes are the only assembly elements and ensure the functionality of the 3 components of this project. The dimensions of these axes can be rigorously managed and eliminate all risks of parasitic noise, unlike some previous techniques where it appears practically impossible to manage the dimensions of about twenty axes requiring specific measures.

[0055] -Modulated air sweep over several floors

[0056] 3

[0057] QUALITY:

[0058] The risks incurred during assembly operations, particularly with fins of different dimensions, are eliminated.

[0059] In this project the grid and the cage can be assembled by robot at the exit of the press.

[0060] In this new concept, 3 components are assembled by 4 axes.

[0061] In terms of quality, this results in a significant improvement in the costs of quality and non-quality.

[0062] -An aerator can be composed of several cages with a grid

[0063] .4

Claims

Demands

1. An air vent for automobiles characterized in that it comprises a grille assembled in a cage by 2 horizontal axes themselves assembled in a housing by 2 vertical axes. The angular displacements of the grille in the cage are limited by a system of stops which generates a blind spot.

2. Air ventilator according to claim 1 characterized in that it allows air to be diffused into the passenger compartment of automobiles by means of the grille which, by oscillating movements, sweeps air in all directions

3. Air ventilator according to claims let 2 characterized in that the 2 horizontal axes of the grid are assembled in 2 holes in the cage and allow up and down oscillation and the 2 vertical axes of the cage are assembled in 2 holes in the housing and allow D / L and L / D oscillation.

4. Air ventilator according to claims 1 to 3 characterized by the creation of notches on the horizontal axes allowing positioning of the grid.

5. Air ventilator according to claims 1 to 4 characterized in that the grille is flat, concave or angular and the cage is round, square, rectangular or trapezoidal.

6. Air ventilator according to claim 5 characterized in that the perforations of the grid are perpendicular to the front of the grid and are round, square, rectangular or trapezoidal.

7. Air ventilator according to claims 1 to 6 characterized in that the symbol and logo appear on the front of the grille.

8. An air ventilator according to claims 1 to 7, characterized in that it consists of several grids assembled in their cages. 5