Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
  • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates

Definitions

• the invention relates to a grille for letting air in and / or letting out air with a housing box which is inserted into an opening and has a cover frame.
• Such grilles are generally known in ventilation systems and furnace construction and are available on the market in a variety of forms and designs. We refer here to, for example, the compact grille, which is shown in utility model 88 03 613.8 or DE-OS 39 10 987.
• these grids form a unit and are or the like in an opening of a wall of a tiled stove.
• the grid being fixed in the opening in different ways.
• screws are used to fix the cover frame to the wall.
• these screws are visible from the outside, which again considerably changes the aesthetic design of the grille.
• a concealed fastening option was developed.
• springs or screw elements must be attached to the front or the long sides of the grille.
• the front or long sides must be punched out on ventilation grilles so that the actuating screw for the concealed fastening within the grille can be operated from the room side, and the fastening bracket can be fastened to the mounting frame or another component.
• the latter is located outside the grille as a traverse in a duct system or in the masonry. Easy assembly is only possible due to this complicated configuration.
• the present invention has for its object to provide a grid of the above. To create a type that is easy to manufacture and with as few openings as possible, can be easily inserted into an opening and thereby receives an appealing aesthetic appearance.
• a cover frame is detachably placed on the cover frame.
• This frame allows the grille to be fixed in a simple manner by screwing it on using appropriate screw elements from the outside in a wall, since the frame then makes the screw heads invisible. Need the compact grille also no additional openings to be buried, which lead to additional noise pollution.
• the cover frame is assigned a retaining bar which has at least one locking device for receiving a locking element on the frame.
• the latching device should be designed in such a way that the frame can be simply clipped onto the cover frame.
• the retaining strip preferably made of plastic, has a slot for receiving the cover frame. This means that the actual locking devices of the holding bar point outwards, while another part of the holding bar, namely a washer, is arranged between the cover frame and the wall. In this case, the retaining strip also serves to support the cover frame against the wall and, above all, to isolate noise. Noises from the grille are no longer transmitted directly to the wall, since the cover frame is insulated by the washer.
• the latching device consists of a strip with a molded undercut groove.
• the groove is preferably round in cross section and serves to receive a spherical strip which is molded onto the frame.
• the ball strip can be clipped into the undercut groove. With the application of an appropriate force, however, it is also possible to easily remove the ball strip from this round groove.
• the frame itself can be made in one piece from a flexible material, for example plastic, or from individual profiles, which are then mitred and joined in the corner areas. If a flexible material is used, it is advisable to provide a corresponding recess in the blind strip for inserting a reinforcing strip, so that the blind frame cannot warp even after prolonged use.
• the cross-section of the frame should be designed such that it overlaps the cover frame or the holding strip with correspondingly shaped legs.
• Such a frame and also the retaining strip can also be used for existing grilles. In this way it is possible to subsequently provide already installed grids with a better "outfit” by covering the fastening elements. Furthermore, these gratings can now be given a different appearance by the frame, which makes the gratings more interesting.
• FIG. 1 shows a plan view of a grating with a frame according to the invention
• FIG. 2 shows an enlarged cross section through a corner region of the frame and grille in the position of use along line II-II in FIG. 1.
• a commercially available grille 1 with lamellae 2 is shown, which is also referred to as a compact grille.
• the slats 2 are pivotally mounted in corresponding side walls, so that the slats 2 allow air to enter and exit from or into the grille 1.
• a grating There are many design options for such a grating, all of which are intended to be encompassed by the present inventive concept.
• a grille 3 is assigned to this grille 1, which in the exemplary embodiment shown in FIG. 1 consists of four profiles 3a, 3b, 3c and 3d. These profiles are mitred and held together in their corner areas. The holding together can be done by appropriate connection elements, gluing, etc.
• the complete frame is injection molded from, for example, a plastic or made of aluminum or the like material in one piece, for example by punching, and is bent as desired.
• the grid 1 is fastened by means of fastening elements 4, for example screws, in an opening 5 of a wall 6 or the like. fixed.
• fastening elements 4 for example screws
• strips 8 and 9 are removed from a housing box 7 of the grid 1. edged, which overlap in the corner areas and form a cover frame 10 for the opening 5.
• the fastening element 4 passes through this cover frame 10 and is then screwed into the wall 6.
• a retaining strip 11 is pushed onto the cover frame 10, which forms locking devices 12a and 12b for fixing the frame 3.
• This holding strip 11 is preferably made of plastic, and the locking devices 12 can be easily manufactured, for example, by injection molding.
• a slot 13 is formed in the holding strip 11, which is used to receive the cover frame 10.
• the cover frame 10 is supported at the same time by a washer 14 against the wall 6.
• the washer 14 also causes damping, so that noises which arise, for example, from an air stream or from a rattling of the slats 2, are not transmitted to the wall 6.
• the idea of the invention is also intended to cover if the retaining strip 11 consists only of the latching devices 12 which are placed on the cover frame 10 and which form a recess 15 between them for receiving a screw head 16.
• a simple exemplary embodiment of a latching device 12 has a strip 17 into which an undercut groove 18 is formed.
• This groove 18 is spherical in cross section in the exemplary embodiment shown and serves to accommodate a corresponding spherical strip 19 which is integrally connected to the frame 3.
• two locking devices 12a and 12b are provided, so that two strips 17a and 17b, each with a groove 18a and 18b and two spherical strips 19a and 19b, are also provided on the frame 3.
• a recess 20 is also provided in the cover frame 3, into which, for example, a reinforcing rail could be inserted.
• the frame 3 is otherwise designed such that it completely overlaps the retaining strip 11 with a leg 21 and strikes the wall 6. On the other hand, it also overlaps the retaining strip or the latching device 12 with a support leg 22 and is supported against a surface of the cover frame 10 or the grille 1. As a result of this configuration, the cover frame with the fastening element and the holding strip 11 completely disappears under the frame 3.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
• Photoreceptors In Electrophotography (AREA)
• Motor Or Generator Cooling System (AREA)
• Mutual Connection Of Rods And Tubes (AREA)
• Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=6501235

Family Applications (1)

Country Status (7)

Family Cites Families (9)

• 1993
  • 1993-10-28 DE DE4336804A patent/DE4336804C2/de not_active Expired - Fee Related
• 1994
  • 1994-10-12 EP EP94928889A patent/EP0724701B1/fr not_active Expired - Lifetime
  • 1994-10-12 DE DE59405051T patent/DE59405051D1/de not_active Expired - Fee Related
  • 1994-10-12 CZ CZ96886A patent/CZ88696A3/cs unknown
  • 1994-10-12 AT AT94928889T patent/ATE162294T1/de not_active IP Right Cessation
  • 1994-10-12 ES ES94928889T patent/ES2111956T3/es not_active Expired - Lifetime
  • 1994-10-12 WO PCT/EP1994/003349 patent/WO1995012096A1/fr not_active Ceased
  • 1994-10-12 HU HU9601105A patent/HU215355B/hu not_active IP Right Cessation
  • 1994-10-12 CZ CZ19977072U patent/CZ6609U1/cs not_active IP Right Cessation

Non-Patent Citations (1)

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