CN104011407B - Securing structure for light panel - Google Patents

Abstract

The invention relates to a securing structure for a light panel, the light panel (7) comprising at least one frame (5) and one illumination-field element (6), and the invention being characterised in that said securing structure (4) comprises at least one retainer element (2) for receiving double leg springs (1), as well as at least one double leg spring (1) that has windings (1.2), spring ends (1.5), and a bow (1.4). The bow (1.4), which begins at the windings (1.2), defines a plane A, with the windings (1.2) and the spring ends (1.5) being located above plane A and at least one part (1.6) of said bow (1.4) being located below plane A.

Description

Fixing structure for light panels

technical field

The invention relates to a fixing structure for a light panel, the use of the fixing structure for a light panel, a light panel and a use of the light panel.

Background technique

Cavities are created in roof or wall systems constructed in erected, suspended or supported form. This gap (cavity) is used for installation eg ventilation channels, cables etc. Corresponding cutouts (Ausschnitt) are provided in the roof (decke) or in the wall for the introduction of eg recessed lights (eg halogen downlights). Depending on the embodiment, the roof or wall system has different material strengths. The introduced component has a certain installation depth which defines a minimum distance from another (for example parallel) limiting surface (for example a rough roof or a solid wall). For the determination of the installation depth, not only the spacing in the installed state but also the required spacing in the frame of the insertion component must be taken into account.

Current developments in lighting technology lead to the fact that lighting elements, lamps and luminaires can be realized significantly more flat and in a space-saving manner and therefore with a smaller installation depth. The introduction of LEDs in particular provided a significant boost to this development.

Recessed lights with frame and lighting field elements (Leuchtfeldelement) are also called light panels. It is now often equipped with LED lighting. However, it can also be equipped with fluorescent tubes, halogen lamps or conventional incandescent bulbs. The advantage of this light panel is that no unboxing or other preparations have to be made at the walls or roof in order to be able to install the light panel. The opening to accommodate the frame is sufficient for mounting and securing.

For fastening in such structures, various spring-based solutions are used, which engage into provided cutouts. These spring-based solutions can be handled without tools and have low assembly effort. The components are generally such that they have a low weight (mass), so that the holding force of these springs does not have to appear particularly strong.

In the case of surface-shaped components such as lamp panels, despite a small installation depth (LED boards with an installation depth of eg 12 mm), a higher weight of several kilograms results due to the size. When designing a spring system suitable for this, not only a correspondingly higher requirement for holding force arises, but also the problem that a spring system with a larger opening angle, depending on the initial stress, has a so-called adjustment effect, whereby the spring at the initial The location has a larger opening angle than the original opening angle. The stronger the underlying elastic force is designed, the greater the adjustment effect. Such stresses with large opening angles occur in particular if the surface component is introduced into the described cavity by means of a spring. The adjustment effect leads to the fact that such a spring can no longer keep the surface element flush with the ceiling or wall despite a corresponding preadjustment.

The higher weight of the surface element and the higher spring force required thereby lead to higher stresses on the roof or wall on which it rests. These higher stresses arise not only in the installed state, but also in particular by forces (eg shear forces) that occur during installation and removal. This is particularly important if the roof or the wall is only subjected to very limited loads (eg plaster plaster (Gipskarton) or light roofs (Leichtbaudecke)).

It is generally not possible to provide cutouts in the ceiling or wall without cutting edges, so that visual defects arise in this connection, which have to be processed or covered up in a complex manner. Furthermore, the situation itself poses certain security risks.

Contents of the invention

The invention therefore aims to eliminate the above-mentioned disadvantages of the prior art. Fixing structures for the lamp panels are to be provided, which means that the lamp panels can be inserted flush into these roofs, resulting in smooth roof surfaces. In particular no regulating effects should occur here. The light panel should therefore reduce the stress on the roof and the walls not only in the installed state but also during installation and removal. The light panel should therefore be suitable in particular for ceiling and wall surfaces which can be loaded to a limited extent.

It has surprisingly been found that a fastening structure for a lamp panel with frame and lighting field elements does not have the disadvantages of the prior art. A fastening structure was found comprising at least one retaining element for accommodating a double helical torsion spring (Doppelschenkelfeder) and at least one double helical torsion spring with a coil, a spring end and a clip (Buegel), wherein the start at the coil The clip defines a plane A and the coil and spring ends lie above plane A and at least a portion of the clip lies below the plane.

Preferred embodiments are defined in the dependent claims.

Description of drawings

1 to 5 exemplarily show objects according to the invention. The objects of the present invention should not be limited to the illustrations.

Figure 1 shows a double helical torsion spring. The holding element is shown in FIG. 2 . Figure 3 shows the protection components. The fastening structure according to the invention is shown in FIG. 4 .

detailed description

In Figure 1 a double helical torsion spring (1) is shown. It consists of a coil (1.2), a spring end (1.5) and a clip (1.4). The clamp (1.4) starting at the coil (1.2) defines a plane A. Coil (1.2) and spring end (1.5) lie on plane A. Part (1.6) of the clip (1.4) lies below plane A and forms plane B itself. The clip (1.4) has a bending region (1.3) through which the clip is oriented below the plane A. This results in an interior angle which is smaller than 180°.

Preferably, the internal angle α between plane A and plane B of the clamp part ( 1.6 ) lying below plane A is 90° to 175°, preferably 120° to 150° and particularly preferably 130° to 140° .

The clip length of the clip (1.4) is determined in particular according to the positional conditions of the lamp panel to be fastened. Experts choose matching double helical torsion springs for this. The single length of the hoop may be, for example, 2 to 20 cm. The individual lengths are preferably 3 to 10 cm, particularly preferably 4 to 8 cm.

At least one bending region of the double helical torsion spring (1) can be arranged at any position of the clip (1.4). Preferably, the length of the clip (1.6) is at least half of the total length of the clip (1.4), preferably about 55 to 90%, preferably 60 to 85% and particularly preferably of the total length of the clip (1.4) 65 to 80%. The length data relate in each case to parallel running legs of the clip (1.4).

Preferably, the double helical torsion spring (1) has one or two bending regions (1.3), particularly preferably one bending region (1.3), wherein the legs of the clip each run parallel.

The bending area (1.3) leads to, on the one hand, a sufficient clip length of the spring for installation and, on the other hand, a short path between the coil axis of the spring and the bearing point of the clip to achieve the smallest possible leverage . A shorter clip length would make it difficult to introduce the spring into the cavity without tool pretensioning. Linked to the above problems, longer levers will require significantly higher spring forces to hold the face member. This likewise reduces the force to be exerted on the spring for mounting the surface component and, moreover, the bending ( 1 . 3 ) itself reduces the degree of opening angle of the spring required here.

This also results in a similarly less resilient spring and thus less risk of injury when the surface component is removed. In this case, the bending (1.3) of the clip (1.4) also has the important advantage that the surface of the frame is not damaged during springback, because the clip (1.4) is separated from the lamp panel (1.6) by the clip part (1.6). 7) The frame (5) or lamp panel (7) is pointed away.

In conjunction with a suitable height of the retaining element (2), the bending (1.3) also results in the advantage that the surface elements can be assembled in the same set for different roofs or wall thicknesses (for example, single-layer and double-layer plaster roofs). Holding element and spring (fixing structure (4)) to fix.

Preferably, the wire thickness of the double helical torsion spring is 1.0 to 2.0 mm, preferably 1.2 to 1.6 mm and particularly preferably 1.4 mm to 1.6 mm.

Preferably, the inner diameter (1.1) of the coil (1.2) is 3 to 15 mm, preferably 5 to 10 mm and particularly preferably 7 to 9 mm.

Preferably, the coils ( 1 . 2 ) of the double helical torsion spring ( 1 ) each have 3 to 15, preferably 5 to 10 and particularly preferably 7 to 9 turns.

The spring can consist of or contain materials commonly used for springs, such as spring steel, brass, beryllium copper, bronze, rubber, or fiber composite materials, such as glass-fibre-reinforced plastic.

The spring is embodied as a double helical torsion spring, wherein it is limited by the choice of wire thickness, the number of coils (1.2) and the coil diameter (1.1) on the one hand to exert a higher force and on the other hand to cause almost no adjustment effect.

Figure 2 shows a holding element (2), which may have three regions (2.2) to (2.4). The holding element (2) preferably has an area (2.2) for fixing at the frame (5), an area (2.3) for accommodating the coil (1.2) of the double helical torsion spring (1) and a spring end (1.5) ) of the anti-support area (2.4). The size and height of the holding element and the corresponding area are adapted to the double helical torsion spring (1), wherein the corresponding holding element (2) can be selected by an expert.

In a preferred embodiment, the region ( 2.4 ) has an opening ( 2.1 ) through which the clip ( 1.4 ) can be bent. As a result, the spring can be opened at a greater angle for mounting and dismounting the surface component.

The holding element ( 2 ) can consist of different materials, such as plastic or steel. Usually steel is used to avoid breakage of the retaining element (2).

The protective element ( 3 ) is shown by way of example in FIG. 3 . The protective element (3) preferably comprises two plates (3.1) and (3.3), which are preferably oriented parallel to each other. They are spaced apart from each other by a distance (3.2). The spacing (3.2) and size are selected by the expert according to the double helical torsion spring used. The protective element (3) is dimensioned such that it can be fixed on the clip part (1.6) and is thus self-retaining. The protective element (3) can be pushed onto the clip part (1.6), for example. The two plates ( 3.1 ) and ( 3.3 ) can be of equal length or, as shown in FIG. 3 , have different lengths from each other. Furthermore, the two plates (3.1) and (3.3) can be connected to each other at a distance (3.2) on two or more sides. The distance (height) of the protective elements ( 3.2 ) is adapted to the corresponding wall thickness, roof thickness or base thickness (for example a height of 12.6 mm in a 12.5 mm thick plaster roof).

In the case of the preferred protective element ( 3 ) shown, the longer leg (plate) ( 3 . 3 ) has a length that protects the top or bottom side from the applied spring force. This generally corresponds at least to the distance between the two clamp legs of the clamp part (1.6). The shorter leg (3.1) is shorter than the frame width of the surface element in the installed state and covers the cutting edge of the roof or wall.

The protective element can be produced, for example, from a plate with a thickness of 0.3 to 0.5 mm, preferably from a corrosion-resistant material.

The protective element serves not only to protect the less point-loadable roof or wall against spring forces in the installed state, but also in particular against forces acting during the assembly and removal process.

Figure 4 shows the fastening structure (4) comprising a holding element (2) for accommodating a double helix torsion spring (1) and a double helix with coil (1.2), spring end (1.5) and clip (1.4) Torsion spring (1). The holding element ( 2 ) is introduced into the opening of the light panel frame ( 5 ) and fastened to the frame with countersunk screws as fastening means. The clamp (1.4) starting at the coil (1.2) defines a plane A. Coil (1.2) and spring end (1.5) lie above plane A and part (1.6) of clip (1.4) lies below plane A, wherein part (1.6) is bounded by bending area (1.3). The part (1.6) of the clamp comprises the protection element (3). The spring (1) is inserted into the holding device (2) in such a way that the part (1.6) of the clip points away from the frame (5) of the lamp panel (7).

Since the part (1.6) of the clip points away from the frame (5), an acute angle is created between the plane B and the plane of the wall or roof material (see Figure 4). Ideally, the sections (1.6) lie parallel to the wall or roof material to ensure a uniform force distribution. In this connection it is preferred that the plane of the wall or roof material forms an angle with plane B of between 0° and less than 90°. Angles between 0° and 45° are particularly preferred. Quite particularly preferably, the angle assumes a value between 0° and 22.5°, in particular 0° to 10°.

The surface component (light panel (7)) is characterized in that the surrounding frame structure (5) covers the cut edges of the top or wall and provides receptacles (eg openings) for the holding element (2).

The lamp panel ( 7 ) according to the invention can thus be fixed without tools.

Such a frame structure has the advantage that it can in principle be used for different sizes of such components. Depending on the size and weight of the surface element, the number of kits consisting of retaining elements, springs (fixing structure (4)) and optional protective elements can vary, wherein there are at least two such kits per light panel (7) (fixed structure (4)) is preferable.

In Fig. 5 is depicted a lamp panel (7) comprising a frame (5) and a lighting field element (6). The frame (5) (shown here in black) is usually made of metallic or plastic material.

Another object of the invention is the use of the fixing structure ( 4 ) according to the invention for fixing a light panel ( 7 ) in a wall or ceiling.

Elements known to experts, usually made of plastic or glass, are used as illumination field elements ( 6 ).

Another object of the invention is a light panel (7) comprising a frame (5) and a lighting field element (6) and at least one fixing structure (4), preferably at least two fixing structures (4) according to the invention.

The lamp panel (7) can present common geometric shapes, such as circle, rectangle including square, trapezoid.

The holding element (2) is preferably mounted at the frame of the lamp panel (7). It can be fixed by common fixing means such as adhesives, bolts and the like. Preferably, the light panel (7) has a receiving area, such as a slot for receiving the holding element (2).

In a preferred embodiment, the illumination field element ( 6 ) is transparent, translucent or opaque, in particular for visible light. Particularly preferred illuminated field elements ( 6 ) are transparent or translucent, quite particularly preferably translucent. The illuminated field elements (6) can be monochromatic or polychromatic. It is usually colorless.

The light panel can be provided with different light sources. For example LEDs, incandescent lamps, fluorescent tubes or halogen spotlights are suitable. LEDs are particularly preferred for smaller installation depths and lower current consumption.

Furthermore, the use of the light panel ( 7 ) according to the invention as a lighting element in a ceiling or wall with a cavity forms part of the invention. This applies in particular to ceilings and walls such as suspended ceilings made of plaster or wood. The lamp panel is preferably used in roofs or walls comprising or consisting of wood or plaster. The suspended ceiling can be formed, for example, from individual ceiling panels, as supplied by the company Odenwald Faserplattenwerk GmbH, Germany.

list of reference signs

1 double helical torsion spring

1.1 Inner diameter of the coil (1.2)

1.2 Coils of the double helical torsion spring (1)

1.3 Bending area of the clamp (1.4)

1.4 Clamp for double helical torsion spring (2)

1.5 Spring end of double helical torsion spring (2)

1.6 The part of the clamp (14) of the double helical torsion spring (2), below the plane A

2 holding element

2.1 Opening in the area (2.4) of the holding element (2)

2.2 Elements for fixing the holding element (2) to the frame (5)

2.3 Element for holding the coil (1.2) of the holding element (2)

2.4 Element of the retaining element (2) as counter-support for the spring end (1.4)

3 Protection elements

3.1 The first plate of the protection element (3)

3.2 Distance between plate (3.1) and plate (3.3)

3.3 The second plate of the protective element (3)

4 Fixing structure for light panel

5 The frame of the light panel

6 Lighting elements of the light panel

7 Light panel.

Claims (26)

1. A fixing structure for a lamp panel, wherein said lamp panel (7) comprises at least one frame (5) and a lighting field element (6), characterized in that said fixing structure (4) comprises a at least one holding element (2) for accommodating a double helical torsion spring (1) and at least one double helical torsion spring (1) with a coil (1.2), a spring end (1.5) and a clip (1.4), wherein in Said clamp (1.4) starting at said coil (1.2) defines a plane (A) and said coil (1.2) and said spring end (1.5) lie on said plane A and said clamp ( At least a part (1.6) of 1.4) lies below said plane A and forms plane B. 2. Fastening arrangement according to claim 1, characterized in that the clamp (1.4) has at least one bending region (1.3). 3. Fixing structure according to any one of the preceding claims 1 to 2, characterized in that the internal angle between said plane A and the plane B of the clip part (1.6) lying below said plane A α is less than 180°. 4. The fixing structure (4) according to any one of claims 1 to 2, characterized in that the wire thickness of the double helical torsion spring (1) is 1.0 to 2.0 mm. 5. The fixing structure according to any one of the preceding claims 1 to 2, characterized in that the inner diameter (1 .1 ) of the coil (1 .2) is 3 to 15 mm. 6. The fixing structure according to any one of the preceding claims 1 to 2, characterized in that the coils (1.2) of the double helical torsion spring (1) each have 3 to 15 turns. 7. Fastening structure according to any one of the preceding claims 1 to 2, characterized in that the holding element (2) has a region (2.2) for fastening at the frame (5), for The area (2.3) that houses the coil (1.2) of the double helical torsion spring (1) and the area (2.4) that acts as a counter-bearing for the spring end (1.5). 8. Fastening arrangement according to claim 7, characterized in that the region (2.4) as counter bearing of the spring end (1.5) has an opening (2.1) which makes the clip (1.4) Can be bent through this opening (2.1). 9. Fixing structure according to any one of the preceding claims 1 to 2, which additionally comprises a protective element (3) comprising two plates (3.1) and (3.3) extending in parallel and It can be fastened to the clip part (1.6) by means of a distance (3.2) from the plate (3.1, 3.3). 10. Fixing structure according to any one of the preceding claims 1 to 2, characterized in that the internal angle between said plane A and the plane B of the clip part (1.6) lying below said plane A α is 90° to 175°. 11. Fixing structure according to any one of the preceding claims 1 to 2, characterized in that the internal angle between said plane A and the plane B of the clip part (1.6) lying below said plane A α is 120° to 150°. 12. Fixing structure according to any one of the preceding claims 1 to 2, characterized in that the internal angle between said plane A and the plane B of the clip part (1.6) lying below said plane A α is 130° to 140°. 13. The fixing structure (4) according to any one of claims 1 to 2, characterized in that the wire thickness of the double helical torsion spring (1) is 1.2 to 1.6 mm. 14. The fixing structure (4) according to any one of claims 1 to 2, characterized in that the wire thickness of the double helical torsion spring (1) is 1.4 mm to 1.6 mm. 15. The fixing structure according to any one of the preceding claims 1 to 2, characterized in that the inner diameter (1 .1 ) of the coil (1 .2) is 5 to 10 mm. 16. The fixing structure according to any one of the preceding claims 1 to 2, characterized in that the inner diameter (1 .1 ) of the coil (1 .2) is 7 to 9 mm. 17. The fixing structure according to any one of the preceding claims 1 to 2, characterized in that the coils (1.2) of the double helical torsion spring (1) each have 5 to 10 turns. 18. The fixing structure according to any one of the preceding claims 1 to 2, characterized in that the coils (1.2) of the double helical torsion spring (1) each have 7 to 9 turns. 19. A light panel comprising a frame (5) and a lighting field element (6), characterized in that it also comprises at least one fastening structure (4) according to any one of claims 1 to 18. 20. The light panel as claimed in claim 19, characterized in that at least one of the retaining elements (2) is mounted at the frame of the light panel (7). 21. The lamp panel according to any one of claims 19 or 20, characterized in that the lighting field element (6) is transparent, translucent or opaque. 22. The light panel as claimed in any one of claims 19 to 20, characterized in that LEDs are used as light sources. 23. The light panel according to any one of claims 19-20, characterized in that the light panel comprises at least two fixing structures (4) according to any one of claims 1-18. 24. A use of a light panel as claimed in any one of claims 19 to 23 as a lighting element in a ceiling or wall with a cavity. 25. Use according to claim 24, characterized in that the roof and walls comprise plaster or wood. 26. Use according to claim 24, characterized in that the roof and walls are made of plaster or wood.