Locking system for lights and locking element

Abstract

Locking system for luminaires (50), comprising a mounting plate (10) and a mounting frame (20), wherein the mounting frame (20) is connected or connectable to the mounting plate (10) by means of a screw connection, in particular by means of a bayonet fitting, characterized in that the mounting plate (10) has at least one recess (15) in which a locking element (30) is replaceably inserted, wherein the locking element (30) has a chamfered surface (34) and a stop surface (35) which is designed such that a rotational movement of the mounting frame (20) is blocked against a screwing direction (B) of the mounting frame (20), furthermore the locking element (30) has two legs (31, 32), wherein on an outwardly projecting leg (31), i.e.the leg (31), which, when the locking element (30) is inserted into the respective recess (15) of the mounting plate (10), points outwards from the center of the mounting plate (10), the stop surface (35) and the chamfered surface (34) are formed, the locking element (30) is at least partially elastic or flexible, wherein the outwardly pointing leg (31) is flexible such that, when inserted into the respective recess (15), it is bendable in the direction of the further leg (32), the stop surface (35) and the chamfered surface (34) are formed as elements projecting perpendicularly from the outwardly pointing leg (31), wherein a locking rib (17) is formed on a fastening ring (12) of the mounting plate (10), against which, in the mounted state of the luminaire (50), a stop element (22) of the mounting frame (20) rests.

Description

[0001] The invention relates to a locking system for luminaires, comprising a mounting plate and a mounting frame, wherein the mounting frame is connected or connectable to the mounting plate by means of a screw connection, in particular by means of a bayonet fitting, according to the preamble of the claim. 1 Furthermore, the invention relates to a locking element, in particular for a locking system according to the invention, as defined in the preamble of the claim. 9 .

[0002] Various locking systems for luminaires are known in the prior art. It is known that different elements of a luminaire, especially a wall or ceiling luminaire, are screwed together.

[0003] The state of the art is exemplified according to Fig. 1 referred. Fig. Figure 1 shows a wall or ceiling light 6, which essentially consist of three individual parts, namely a mounting plate 1 , a fastening ring 2 as well as a light cover 3 consists of the fastening ring. 2 This involves using the mounting plate 1 by screws 4 connected. The light cover is attached using a clamping mechanism. 3 For additional security, at least one setscrew is required. 5 designed so that the fastening ring cannot twist 2 in relation to the mounting plate 1 can be done.

[0004] Firstly, such a light fixture, according to Fig. 1. The disadvantage is that the screw connections detract from the overall aesthetic impression of the light fixture. 6 disruptive. Furthermore, there is a risk if such lights are used. 6are installed in public spaces, especially in schools and similar institutions, and are susceptible to tampering. The screws 4 as well as the grub screw 5 can be easily removed, so that the lights 6 according to the state of the art, they can be targets of vandalism.

[0005] Based on the foregoing, the object of the invention is to provide a further developed locking system for luminaires, in particular for wall or ceiling luminaires, which enables screwless locking of luminaire elements. Furthermore, the locking system should positively influence the aesthetic appearance of a luminaire.

[0006] The problem of the invention is solved according to the combination of features according to claim 1 or according to the combination of features according to claim 9, wherein the dependent claims represent at least advantageous embodiments and further developments.

[0007] It is therefore assumed that there is a locking system for luminaires, in particular for wall or ceiling luminaires, wherein the locking system comprises a mounting plate and a fastening frame, wherein the fastening frame is connected or connectable to the mounting plate by means of a screw connection, in particular by means of a bayonet fitting.

[0008] In the following, a screw connection is understood to be a connection that uses a screw closure. Such a screw connection is based on the fact that a further element with an internal thread is screwed onto the external thread of a first element. The locking system itself is screwless. This means that no fastening screws are required to connect the individual elements of the light fixture.

[0009] According to the invention, the mounting plate has at least one recess in which a locking element is replaceably inserted, wherein the locking element has a chamfered surface and a stop surface designed such that a rotational movement of the mounting frame opposite to the screwing direction of the mounting frame is blocked. The locking element is preferably at least partially elastic or flexible.

[0010] According to the invention, the locking system comprises a locking element, which is preferably a separate component. The locking element is designed to be replaceable. Therefore, if the locking element is damaged, a new locking element can be inserted into the recess. Due to the design of the locking element, which has both a chamfered surface and a stop surface, a rotational movement of the mounting frame against the screw direction is blocked.

[0011] A rotational movement of the mounting frame against the screwing direction is understood to mean a rotational movement that involves twisting or removing the mounting frame from the mounting plate.

[0012] The chamfered surface preferably functions as a ramp, wherein a complementary locking element of the mounting frame is movable on the chamfered surface or on the ramp formed thereby, in the screwing direction. The complementary locking element of the mounting frame is, in particular, a blocking surface which, during a rotational movement of the mounting frame against the screwing direction, abuts or rests against the stop surface of the locking element.

[0013] Since the locking element is preferably flexible, when the mounting frame is screwed onto the mounting plate by turning, the locking element can be compressed so that the latching element is guided over the chamfered surface of the locking element. Because the locking element is compressed, less space is required when screwing on the mounting frame in conjunction with the complementary latching element of the mounting frame.

[0014] Preferably, the locking element is designed to be flexible only such that a compressive force on the beveled surface causes the locking element to compress. When a corresponding compressive force is applied laterally to the stop surface, the locking element preferably does not deform.

[0015] Preferably, the mounting plate has three recesses, extending substantially perpendicular to the mounting plate, for receiving flexible locking elements, the recesses preferably being arranged at 120° angles to each other. Since the locking system for luminaires preferably relates to a design of round wall or ceiling luminaires, a distribution of the recesses at 120° angles from the center of the luminaire or from the center of the mounting plate represents a uniform distribution. In other words, the locking system preferably has three locking elements formed in three recesses evenly distributed across the mounting plate.

[0016] Recesses extending essentially perpendicular to the mounting plate are to be understood in particular as those formed on a mounting ring of the mounting plate. Preferably, the recesses are designed as a type of insertable compartment located on the outside of the mounting ring. An insertable compartment can, for example, be formed by two webs projecting perpendicularly from the mounting plate.

[0017] Preferably, the locking element has two legs, with the stop surface and the chamfered surface being formed on an outwardly projecting leg. The outwardly projecting leg is the leg that, when the locking element is inserted into the recess of the mounting plate, points outwards from the center of the mounting plate.

[0018] Preferably, the outwardly pointing leg is flexible such that, when inserted into the recess, it can be bent in the direction of the other leg when a compressive force is applied. In other words, the outwardly pointing leg can be bent or pressed in the direction of the inwardly pointing leg when a compressive force is applied. This allows the complementary locking element of the fastening frame to move across the chamfered surface in the screwing direction.

[0019] The stop surface and the chamfered surface are preferably designed as elements projecting from the outwardly facing leg, particularly perpendicularly. Furthermore, it is possible for a stabilizing brace to be formed on the outwardly facing leg.

[0020] A locking ridge can be formed on one of the mounting ring's retaining rings. When the luminaire is assembled, a stop element of the mounting frame rests against this ridge. The stop element of the mounting frame is preferably located on the inside of the mounting frame. The inside of the mounting frame is defined as the side facing the center of the luminaire. The locking ridge thus prevents the mounting frame from being rotated arbitrarily in the tightening direction. Once the locking element of the mounting frame has passed the locking element, the stop element of the mounting frame should rest against the locking ridge of the mounting plate.

[0021] The mounting frame can clamp a transparent or opaque light cover in place. Alternatively, the mounting frame itself may incorporate a light cover. Preferably, the mounting frame clamps the light cover in place. The following steps are required for mounting the light fixture, particularly the wall or ceiling light, and its individual components:

[0022] First, the mounting plate can be attached to an installation surface (wall or ceiling). This can be done, for example, using standard screw connections. Next, the locking element is inserted into at least one recess in the mounting plate. The luminaire cover is then placed on the mounting plate's retaining ring or a separate ring. Finally, the mounting frame can be placed onto the mounting plate, specifically onto the mounting plate's retaining ring.

[0023] The mounting frame is screwed onto the mounting plate. When the mounting frame is fully tightened, the luminaire cover is clamped between the mounting plate and the mounting frame. Sealing elements, particularly sealing rings, can be inserted or formed between the luminaire cover and the mounting plate, as well as between the luminaire cover and the mounting frame. The mounting frame is preferably circular. The mounting frame is preferably dimensioned such that it rests completely on the mounting plate, so that neither the locking elements, nor the blocking tabs, nor any complementary elements are visible when the luminaire is assembled.

[0024] The mounting plate preferably has an annular recess. This recess preferably has holes to allow the mounting plate to be screwed to an installation surface (wall or ceiling). Preferably, the mounting frame is wide enough to cover this recess, so that the wall or ceiling screws are not visible from the outside.

[0025] Overall, it is possible to provide a locking system for luminaires, whereby the individual elements of the luminaire can be assembled without screws.

[0026] To unlock the mounting frame, the locking element can be compressed. Preferably, a compressive force can be applied to the outward-facing leg of the locking element, causing it to be pushed towards the inward-facing leg. This compression allows the locking element of the mounting frame to be guided over the stop surface of the locking element. The mounting frame can then be detached from the mounting plate, and the light cover can be removed or replaced.

[0027] According to a further, particularly secondary, aspect of the invention, the solution of the invention is based on a locking element for a locking system. In particular, the locking element is designed for a locking system according to the invention.

[0028] The locking element has two interconnected legs, one leg having a chamfered surface and a stop surface, the chamfered surface and the stop surface being designed to project from this leg.

[0029] In cross-section, the locking element essentially has a U-shaped basic form.

[0030] The two legs are preferably connected by a connecting web. The chamfered surface and the stop surface are preferably formed at one end of a leg opposite the connecting web. The leg on which the chamfered surface and the stop surface are formed is preferably shorter and / or narrower than the other leg.

[0031] The locking element is preferably designed to be at least partially elastic or flexible.

[0032] Furthermore, it is possible to provide a stabilizing brace on the leg where the chamfered surface and the stop surface are formed. This brace preferably extends from the connecting web to the section of the leg where the chamfered surface and the stop surface are formed. Preferably, the material thickness of the connecting web increases from the connecting web towards the chamfered surface / stop surface.

[0033] Preferably, the locking element is made of a plastic material. The locking element can be a 3D printed part and / or an injection-molded plastic part.

[0034] The invention will be explained in more detail below with reference to exemplary embodiments and figures. The figures show: Fig. 2a: a mounting plate and an associated recess for the insertion of a locking element; Fig. 2b: a locking element inserted into a corresponding recess; Fig. 3: a section through a luminaire with a locking system according to the invention; and Fig. 4: A light fixture locked according to the invention, in external view.

[0035] In Fig. 2a a mounting plate 10 A locking system for luminaires according to the invention is shown. A luminaire cover 11 This also includes a locking element. 30 indicated. The mounting plate 10 includes a fastening ring 12 as well as a paragraph-shaped section 13 . In this paragraph-like section 13 can openings 14 be trained to insert the screws for connecting the mounting plate 10 can be installed on an installation surface (wall or ceiling).

[0036] It can be seen that on the fastening ring12 an exception 15 trained. The excerpt 15 is separated by two bridges 16 formed. The recess 15 It can also be called a slot. The recess 15 It is used for inserting or introducing the locking element. 30 The locking element 30 It essentially has a U-shaped cross-section. This U-shaped form is defined by two legs, namely one leg extending outwards. 31 and an inward-pointing thigh 32 formed. The two thighs 31 and 32 are connected by means of the connecting bridge 33 interconnected.

[0037] In the introduced state (see Fig. 2b) it becomes clear that the thigh 31 from the center of the light fixture outwards. However, this does not mean that the locking element 30is visible in the fully assembled and completed state. Rather, it is in relation to the mounting ring. 12 to recognize that the inward-pointing thigh 32 on the mounting ring 12 lies against it and the outward-pointing thigh 31 is formed at a distance from it and also in a recess 15 The introduced state can be recognized.

[0038] On the outward-facing thigh 31 is a slanted surface 34 and a stop surface 35 to recognize. The two elements, i.e., the beveled surface 34 and the stop surface 35 are at the connecting bridge 33 opposite end of the outward-pointing leg 31 trained. Furthermore, a stabilizing brace is included. 36 to be seen. In a side view of the locking element. 30 It becomes apparent that the stability bracing36 It has a triangular shape. In other words, the material thickness increases starting from the connecting web. 33 in the direction of the sloping surface 34 / the stop surface 35 to.

[0039] In Fig. 2b shows that the beveled surface 34 is designed in such a way that during a rotational movement of a mounting frame (not shown here) in the screwing direction B the material thickness increases. The beveled surface 34 It therefore has a ramp function on which a complementary locking element of the mounting frame engages in the screwing direction. B is movable.

[0040] The one on the mounting ring 12 trained blocking bridge 17 has a curved section 18 on.

[0041] In Fig. Figure 3 shows a section through a composite lamp according to the invention. A mounting frame is included.20 on the mounting plate 10 It is screwed on using a bayonet fitting. It can be seen that a [missing word - likely "piece of hardware"] is attached to the mounting frame. 20 located complementary locking element 21 on the stop surface 35 is attached. A movement contrary to the screwing direction B Therefore, this is not possible. The locking element is in contact with the stop surface during such a movement. 35 on. The stop surface 35 of the locking element 30 This prevents movement in the opposite direction. B The locking element 21 It is designed as a locking surface. This locking surface is, for example, a wall part of the mounting frame. 20 trained.

[0042] It can also be seen that the light is assembled 50 a stop element 22 at the blocking bridge 17 and here especially at the curved section 18of the blocking bridge 17 , is attached. Therefore, it is not possible to attach the mounting frame. 20 further towards B to move, i.e., to unscrew it further. The stop element 22 is on the mounting frame 20 trained, whereby for a clear presentation of the Fig. 3 the connection of the stop element 22 on the mounting frame 20 not shown.

[0043] Provided that the mounting frame comes loose 20 from the mounting plate 10 If desired, the locking element must 30 They can be compressed. It is possible to use a flat tool, such as a slotted screwdriver, to pry into the gap. 23 , which is between the mounting frame 20 and the mounting plate 10 is trained to intervene. By means of a movement towards the outward-pointing thigh. 31The applied pressure force can affect the outward-pointing leg. 31 towards the thigh 32 be pressed.

[0044] In particular, it is possible to apply force to the pressure point using a flat slotted screwdriver. 37 of the locking element 30 to apply. The pressure point 37 can, for example, serve as a connection point between the beveled surface 34 and a flat surface adjoining it. Provided that the outward-pointing leg 31 When pressed inwards, the stop surface is also affected. 35 pressed inwards. This can be done to such an extent that the locking element 21 , i.e., the formed locking surface, via the locking element 30 away in the opposite direction B can be moved. This makes it possible to adjust the mounting frame. 20to solve. Then the light cover can be removed. 11 to be released from the jammed fastening and removed.

[0045] Especially from Fig. 3 shows that neither the locking elements 30 , nor the formed openings 14 visible from the outside. The mounting frame 20 has such a width that both the locking elements 30 as well as the openings 14 and thus the screw connections with the installation surface, from the mounting frame 20 be visibly covered.

[0046] As in Fig. As can be clearly seen in section 4, the individual elements of the light fixture, i.e. the light cover, are locked without screws. 11 as well as the mounting frame 20 on the mounting plate 10 possible. It's just a gap. 23 between the mounting frame 20 and the mounting plate10 formed, whereby through this gap 23 actuation of a locking element 30 is possible. Reference symbol list 1 Mounting plate (state of the art) 2 mounting frames (state of the art) 3 Light cover (state of the art) 4 screws (state of the art) 5 grub screw (state of the art) 6 light fixtures (state of the art) 10 Mounting plate 11 Light cover 12 Mounting ring 13 paragraph-shaped section 14 Opening 15 Exclusion 16 Bridge 17 Blocking bridge 18 curved section 20 mounting frames 21 Locking element 22 Stop element 23 gaps 30 locking element 31 Outward-facing thigh 32 inward-pointing thigh 33 Connecting bridge 34 beveled surface 35 Stop surface 36 Stability bracing 37 pressure point 50 light B Screwing direction

Claims

[1] Locking system for luminaires (50) comprising a mounting plate (10) and a mounting frame (20), wherein the mounting frame (20) is connected or connectable to the mounting plate (10) by means of a screw connection, in particular by means of a bayonet fitting, characterized by , that the mounting plate (10) has at least one recess (15) in which a locking element (30) is replaceably inserted, wherein the locking element (30) has a chamfered surface (34) and a stop surface (35) which is designed in such a way as to block a rotational movement of the mounting frame (20) against a screwing direction (B) of the mounting frame (20). [2] Locking system according to claim 1, characterized by , that the beveled surface (34) has a ramp function on which a complementary locking element (21) of the mounting frame (20) can be moved in the screwing direction (B) of the mounting frame (20). [3] Locking system according to claim 1 or 2, characterized by , that the mounting plate (10) has three recesses (15) extending substantially perpendicular to the mounting plate (10) for receiving flexible locking elements (30), the recesses being arranged at 120° angles to each other. [4] Locking system according to any one of claims 1 to 3, characterized by , that the locking element (30) has two legs (31, 32), wherein the stop surface (35) and the chamfered surface (34) are formed on one leg (31) pointing outwards. [5] Locking system according to any of the preceding claims, in particular according to claim 4, characterized by, that the locking element (30) is at least partially elastic or flexible, wherein in particular the outwardly pointing leg (31) is flexible in such a way that, when inserted into the recess (15), it is bendable in the direction of the further leg (32) when a compressive force is applied. [6] Locking system according to claim 4 or 5, characterized by , that the stop surface (35) and the chamfered surface (34) are designed as elements projecting from the outwardly pointing leg (31), in particular perpendicularly. [7] Locking system according to any of the preceding claims, characterized by , that a locking rib (17) is formed on a fastening ring (12) of the mounting plate (10), against which a stop element (22) of the mounting frame (20) rests when the light (50) is mounted. [8] Locking system according to any of the preceding claims, characterized by, that the mounting frame (20) clamps a light cover (11) or has a light cover. [9] Locking element (30) for a locking system, in particular for a locking system according to any one of claims 1 to 8, characterized by two interconnected legs (31, 32), wherein one leg (31) has a chamfered surface (34) and a stop surface (35), wherein the chamfered surface (34) and the stop surface (35) are designed to project from this leg (31). [10] Locking element (30) according to claim 9, characterized by a basic shape that is essentially U-shaped in cross-section.

Images