EP2876366B1 - Lamp with clamping element - Google Patents

Description

The present invention relates to a luminaire according to the preamble of the independent claim 1.

From the prior art it is known to use seals to protect the components of the lamp from moisture or contamination.

A lamp of the type mentioned is from the EP 0 539 621 B1 known. In this lamp, a clamping element is used to clamp a support plate against a side part. Designed as an angle rail piece clamping element is inserted with one end in a rectangular groove on the side part and bolted to the support plate. The disadvantage of the EP 0 539 621 B1 known lamp is that the clamping element can not reliably clamp the side part and the support plate against each other. Tolerances in the production lead to a tilting of the clamping element in the groove, as a result of which the groove and the clamping element can be easily damaged, and the support plate and side part are not reliably braced against one another. In the compensation you need a plurality of clamping elements, which unnecessarily complicates the assembly.

Another light is from the FR 2 638 508 A1 known. In this lamp, a locking element is used for connecting a housing to a cover, wherein the parts and the locking element have profiled elements which are designed such that the two parts can rotate after being connected by the locking element against each other.

An arrangement for mounting accessories on a lamp wall is from the EP 0 148 334 A2 known and another light is on the DE 39 00 226 A1 known.

It is the object of the present invention to provide a luminaire of the type mentioned, in which the two housing elements are reliably braced against each other and can be easily assembled. If a seal between the first housing member and the second housing member is arranged, the lamp should be reliably sealed.

The object is solved by the features of claim 1.

In the context of the invention, a rotatable mounting means not only a pure rotation of the clamping element, but also includes an additional or simultaneous translation of the clamping element.

The first housing element may be a housing frame or part of a housing frame, but also a carrier or mounting plate and a simple mounting element. The second housing element may be a lid-like component, but also a carrier or mounting plate, a fastening element or another component of the lamp to be clamped against the first housing element.

In the context of the invention, it is possible that at least one further component of the luminaire is arranged between the first housing element and the second housing element. This may, for example, hold a cover glass.

In the context of the invention, the groove can be arranged on any surface of the first housing element. Furthermore, the first housing member may include a plurality of grooves of different configurations arranged on the same or different surfaces.

The invention offers the advantages that first housing element and second housing element can be reliably braced against each other. The clamping element can also be designed such that it bears against the second housing element between the groove and the connection with the second housing element, so that the force transmitted to the clamping element is transmitted to the second housing element reinforced by a lever action. A luminaire according to the invention can be made very modular. For example, when using a plurality of grooves on the first housing element, different second housing elements can be inserted into the luminaire.

Preferably, at least one positive-locking element is formed in the first connecting region, wherein the groove and the positive-locking element are designed such that the positive-locking element can rotate in the groove.

Advantageous embodiments of the present invention are the subject of the dependent claims.

In a preferred embodiment, the clamping element is rigid, so that the clamping effect occurs through the connection of the second connection region with the second housing element. Preferably, the clamping element is made of metal as a casting or a profile strip.

In a preferred embodiment, the clamping element is held captive in at least one rotational position in the groove. As a result, the assembly is considerably simplified, since the clamping element does not have to be held in the meantime. It is also conceivable to design the first connection region and the groove such that the clamping element is held captive in the groove in all rotational positions.

In a further preferred embodiment, the clamping element in the groove is rotatable from a mounting position to the position in the mounted state can be transferred. This simplifies the installation of the luminaire. Advantageously, the clamping element is held captive in the mounting position. This allows the clamping element to be first arranged in the mounting position and then the second housing element can be inserted into the luminaire.

In a particularly preferred embodiment, the angle of rotation between the position in the assembled state and the mounting position is at least 60 °. In the mounting position, this results in a large space for mounting other components of the lamp. Preferably, the angle of rotation is at least 80 °.

In a further preferred embodiment, the first housing element surrounds the second housing element like a frame and comprises a groove on at least two opposite inner sides. The grooves each cooperate with at least one clamping element, wherein in the mounting position of the clear distance between two opposing clamping elements is at least as large as the extension of the second housing element. This means that the clamping elements allow a straight insertion of the second housing element in the mounting position. This simplifies a mechanical installation of the lamp. In this embodiment, a single-part or multi-part first housing element surrounds the second housing element at least in sections. For example For example, the first housing element may be formed as a surrounding frame into which a second housing element designed as a cover is inserted.

In a further preferred embodiment, the clamping element is displaceable in the groove along the longitudinal extension of the groove. Since the position of the clamping element along the groove can be adapted to different second housing elements, the luminaire according to the invention can be used more versatile.

In a further preferred embodiment, the groove is interrupted by at least one insertion region, wherein the clamping element can be inserted into the groove over the insertion region in the direction of the longitudinal extension of the groove. Such a Einsetzbereich allows easy insertion of the clamping element in the groove. Preferably, at least a part of the wall of the groove can be interrupted in the insertion region, so that the clamping element can be introduced into the insertion region in a direction parallel to the surface of the first housing element. However, it is also conceivable to change the shape of the groove in the insertion region such that the clamping element can be introduced into the insertion region in a direction perpendicular to the surface of the first housing element. For example, the groove may be widened in the insertion area.

Alternatively, it is also conceivable to design the groove and the first connecting region in such a way that the clamping element can be converted into a rotational position in which it can be removed from the groove via a pivoting movement in a plane perpendicular to the longitudinal extension of the groove or in the opposite direction insert the groove.

In a further preferred embodiment, the groove and the clamping element act together in the manner of a hinge joint. This embodiment represents a particularly easy to manufacture type of rotatable mounting according to the invention.

In a further preferred embodiment, the groove comprises a first undercut which engages around an end of the first connection region. This results in a large contact area between the groove and the first connection region and falling out of the clamp element in a direction perpendicular to the end of the first connection region is prevented. Due to the extent of embracing the rotational angle range of the clamping element can be limited. By suitable design of the first undercut, the captive mounting of the clamping element in the groove can be easily realized.

In a particularly preferred embodiment, the groove comprises a second undercut, wherein the second undercut overlaps the first connection region. For example, the second undercut may surround a part of the first connection element like a tub. As a result, falling out of the clamping element in a direction perpendicular to the second undercut is prevented.

In a further preferred embodiment, the first connection region is substantially hook-shaped. The bent end cooperates with the first undercut and the adjoining curved portion engages the second undercut. A chop-shaped clamping element can be easily produced from a profile strip or as a cast part.

The second connection region is screwed to the second housing element. This type of detachable connection makes it easy to assemble and disassemble the luminaire. For example, screws can be screwed through the clamping element into threaded bores which are formed on the second housing element. Alternatively, it is conceivable that threaded bolts are formed on the second housing element, which penetrate the clamping element and are screwed onto the nut for fastening. However, alternatively, other releasable connection methods are conceivable.

In a further preferred embodiment, at least one slot is formed in the second connecting region, which extends in the mounted state perpendicular to the longitudinal extension of the groove. As a result, the clamping element can be rotated even when it is penetrated by a fastening element, such as a threaded bolt formed on the second housing element. This allows, for example, a nut can be used to convert the clamping element when tightening the nut in the mounted state. In this case, the threaded bolt moves by the rotational movement of the clamping element in the slot.

In a further preferred embodiment, the edges of the second housing element are rounded at least in the region of the clamping elements. Rounded edges increase the contact surface with the clamping element and prevent a clamping element resting against the second housing element from being damaged by punctual loading.

The clamping element comprises a contact region, which is arranged between the first connection region and the second connection region, wherein, at least in the mounted state, the contact region is in contact with an edge of the second housing element. In the second connection region, a force is transmitted to the clamping element on the side facing away from the second housing element by a fastening element. The rotatable bearing serves as the pivot point of the clamping element, whereby due to the lever effect, a larger force in the contact region is transmitted to the second housing element. The contact region may at least partially coincide with the second connection region. Preferably, the edge of the second housing element is rounded in the region of the contact region.

In this embodiment, it is possible that the clamping member is rotated during assembly until it rests with the contact portion at the rounded edge of the second housing member. The force subsequently applied to the second connection region is transmitted to the second housing element in the contact region in an amplified manner.

In a further preferred embodiment, the luminaire comprises a seal, which is arranged between the first housing element and the second housing element, and bears against the first housing element and the second housing element. In this case, the first housing element is clamped by the clamping element in the mounted state against the second housing element, so that the second housing element is pressed against the seal and the seal seals the first housing element against the second housing element. The use of a seal in combination with the clamping element results in a particularly good sealing effect. In particular, when using the clamping element as a lever results from the high clamping effect a particularly effective seal.

In this embodiment, it is possible that the clamping member is rotated during assembly until it rests with the contact portion at the rounded edge of the second housing member. The force subsequently applied to the second connection area is transmitted to the second housing element in the contact area in an increased manner, as a result of which the second housing element is pressed against the seal and compresses it. As a result, the second housing element moves toward the seal and the clamping element is rotated accordingly. Clamping element and rounded edge are formed so that they remain in contact during the connection process.

In this embodiment, it is conceivable that at least one further component of the luminaire, for example a cover glass, is arranged between the first housing element and the second housing element and bears against the seal. It is also conceivable that at least one further component of the luminaire is arranged between the seal and the first housing element and / or between the seal and the second housing element, so that the seal rests against at least one of the two housing elements only indirectly.

Fig. 1

eine schematische Darstellung einer erfindungsgemäßen Leuchte im Querschnitt ohne Klemmelement,

Fig. 2

eine schematische Darstellung eines Klemmelements einer erfindungsgemäßen Leuchte in Perspektive,

Fig. 3

ein schematisch dargestelltes erstes Ausführungsbeispiel einer erfindungsgemäßen Leuchte im Querschnitt,

Fig. 4

ein schematisch, im Schnitt dargestelltes zweites Ausführungsbeispiel einer erfindungsgemäßen Leuchte in Perspektive,

Fig. 5

eine schematische Darstellung der Leuchte aus Fig. 3 im Querschnitt im montierten Zustand,

Fig. 6

eine schematische Darstellung der Leuchte aus Fig. 4 im Querschnitt im montierten Zustand,

Fig. 7

eine schematische Darstellung der Nut einer erfindungsgemäßen Leuchte in Perspektive, und

Fig. 8

ein schematisch dargestelltes drittes Ausführungsbeispiel einer erfindungsgemäßen Leuchte im Querschnitt.

Advantageous embodiments of the present invention are explained in more detail below with reference to drawings. Show it:

Fig. 1

a schematic representation of a lamp according to the invention in cross section without clamping element,

Fig. 2

a schematic representation of a clamping element of a lamp according to the invention in perspective,

Fig. 3

a schematically illustrated first embodiment of a lamp according to the invention in cross section,

Fig. 4

a schematic, shown in section second embodiment of a lamp according to the invention in perspective,

Fig. 5

a schematic representation of the lamp Fig. 3 in cross-section in the mounted state,

Fig. 6

a schematic representation of the lamp Fig. 4 in cross-section in the mounted state,

Fig. 7

a schematic representation of the groove of a lamp according to the invention in perspective, and

Fig. 8

a schematically illustrated third embodiment of a lamp according to the invention in cross section.

For the following statements applies that the same parts are designated by the same reference numerals. If reference signs are contained in a drawing, which are not dealt with in the associated description of the figures, reference is made to preceding or subsequent description of the figures.

In the Fig. 1 shown lamp 1 comprises a first housing member 2, which has a groove 3, a second housing member 4 and a clamping member, not shown 5. The first housing member 2 is formed as a one-piece housing frame which defines on its underside a light exit opening 21 and on its inside 22nd has a circumferential groove 3. In the area of the light exit opening 21, a cover glass 6 is arranged on the housing frame 2. A seal 7 abuts against the housing frame 2, the second housing element 4 and the cover glass 6.

The second housing element 4 is formed as a one-piece cover and has on its upper side rounded edges 41 and threaded holes 42 for receiving screws 9. In the illustrated embodiment, the cover glass 6 is integrally formed. The seal 7 rotates integrally the entire lower edge of the housing frame 2. Between cover 4 and cover glass 6 there is a gap 8, in the other, not shown components of the lamp 1, such as the light source or the power supply can be arranged.

In the illustrated embodiment, the groove 3 upwards a first undercut 31 and a second undercut 32 down. The first undercut 31 is circular segment-shaped and surrounds the circular segment-shaped end 54 of the first connecting portion 51, so that the clamping element 5 is rotatably mounted. The second undercut 32 is formed like a trough and engages over the first connection region 51, wherein the first connection region 51 rests against the second undercut 32 in the mounted state.

The Fig. 2 shows an embodiment of a clamping element 5 of a lamp according to the invention. The clamping element 5 has a first connection region 51, a second connection region 52 and a contact region 53. In the illustrated embodiment, the clamping element 5 is made of a metal profile. The first connection region 51 is hook-shaped, wherein the end of the first connection region 51 is formed in a circular segment, in order to engage with the first undercut 31 of the groove 3 cooperate. The hook-shaped design results in a substantially U-shaped intermediate region 55, in which the wall 33 of the first undercut 31 engages and thus limits the rotational angle range upwards. In addition, a falling out of the clamping element 5 is prevented from the groove 3 perpendicular to the surface of the housing inner wall 22. The trough-like, second undercut 32 additionally prevents falling of the clamping element 5 parallel to the housing inner wall 22, so that the clamping element 5 is held captive in all rotational positions in the groove 3. The second connection region 32 has two slots 56 in the illustrated embodiment.

The Fig. 3 shows the clamping element 5 of Fig. 2 arranged in the groove 3 according to the embodiment of Fig. 1 , A screw 9 penetrates the clamping element 5 at a slot 56 and is inserted into the threaded bore 42 on the cover 4. The clamping element 5 rests with the contact region 53 against the rounded edge 41 of the cover 4. As a result, the clamping element 5 acts like a lever, wherein the force applied by the screw 9 from above on the clamping element 5 force in the contact area 53 reinforced on the cover 4, is transmitted down.

That in the Fig. 4 illustrated embodiment corresponds to the embodiment of FIG. 3 However, on the cover 4 threaded bolts 43 are formed, which penetrate the clamping element 5 and are screwed onto the nut 10 for fastening.

The Fig. 5 shows the embodiment of the Fig. 3 in the assembled state. When moving to the assembled state, the screw 9 has moved in the slot 56. Due to the rounded edge 41 and the rounded contact area 53, the second housing element 4 and the clamping element 5 are in contact with each other during the clamping process via a large contact surface. The first connecting portion 51 is in contact with the second undercut 32 so that the clamping member 5 can not be further rotated. This limitation prevents damage to the individual components. The lid 4 is pressed against the seal 7, whereby the lid 4 is sealed against the housing frame 2.

Fig. 6 shows the embodiment of the Fig. 4 in the assembled state.

Fig. 7 shows the insertion portion 34 of the groove 3 of a lamp 1 according to the invention in the illustrated embodiment, the first undercut 31 in the insertion region 34 of

Groove 3 interrupted. Furthermore, the groove 3 is formed so that the clamping element 5 of Fig. 2 along the longitudinal extension of the groove 3 in the groove 3 is displaceable. For inserting the clamping element 5, this is first introduced from above into the insertion region 34 and then inserted along the longitudinal extension of the groove 3 from the insertion region 34 into the groove 3.

Fig. 8 shows a further embodiment of a lamp 1 according to the invention, which is characterized by the execution of the groove 3 and the clamping member 5 of the in the FIG. 1 illustrated embodiment differs. The clamping element 5 is in the mounting position. In the illustrated embodiment, the angle of rotation between the dashed shown, mounted position and the mounting position corresponds to approximately 90 °. In the transfer of the clamping element 5 in the mounting position, the end 54 of the first connecting portion 51 has rotated in the first undercut 31 and completed a translation. On the opposite inner side 22 of the housing frame 2, a clamping element 5 is also mounted in the groove 3 in the mounting position. The clear distance of the two clamping elements 5 is greater than the extension of the lid 4, Thus, the cover 4 can be used straight from above into the housing frame 2, after the clamping elements 5 were arranged in the groove 3 in the mounting position. However, it is also conceivable that the clamping element 5 is inserted later.

Claims (14)

1. Luminaire (1) with a luminaire housing, comprising a first housing element (2) which includes at least one groove (3), a second housing element (4), and a clamping member (5), the clamping member (5) comprising a first connection area (51) and a second connection area (52), the first connection area (51) interacting with the groove (3) and the second connection area (52) being connected, in the assembled state, to the second housing element (4), wherein the clamping member (5) is pivotably mounted in the groove (3), in a plane perpendicular to the longitudinal extension of the groove (3), wherein the clamping member (5) comprises a contact area (53) which is arranged between the first connection area (51) and the second connection area (52), the contact area (53) being in contact with an edge (41) of the second housing element (4) at least in the assembled state so that the clamping member (5) is configured as a one-sided lever, with the first connection area (51) being the pivot point and the contact area (53) and the second connection area (52) being the points of contact, wherein the second housing element (4) is clamped by the clamping member (5) against the first housing element (2), and the second connection area (52) is screwed to the second housing element (4).
2. Luminaire (1) according to claim 1, characterized in that the clamping member (5) is captively held in the groove (3) in at least one pivoted position.
3. Luminaire (1) according to claim 1 or 2, characterized in that the clamping member (5), pivoting in the groove (3), can be transferred from an assembling position into the position in the assembled state.
4. Luminaire (1) according to claim 3, characterized in that the angle of rotation between the position in the assembled state and the assembling position is at least 60°.
5. Luminaire (1) according to claim 3 or 4, characterized in that the first housing element (2) surrounds the second housing element (4) in a frame-like manner and at least two opposite inner sides (22) of the first housing element (2) comprise a groove (3) each interacting with at least one clamping member (5), the perpendicular clear distance of two opposite clamping members (5) being, in the assembling position, at least as large as the expansion of the second housing element (4).
6. Luminaire (1) according to one of claims 1 to 5, characterized in that the clamping member (5) can be displaced in the groove (3) along the longitudinal extension of the groove (3).
7. Luminaire (1) according to one of claims 1 to 6, characterized in that the groove (3) is discontinued by at least one insertion portion (34), the clamping member (5) being insertable into the groove (3), through the insertion portion (34), in the direction of the longitudinal extension of the groove (3).
8. Luminaire (1) according to one of claims 1 to 7, characterized in that the groove (3) and the clamping member (5) interact in the manner of a hinge joint.
9. Luminaire (1) according to one of claims 1 to 8, characterized in that the groove (3) comprises a first undercut (31) which encompasses the end (54) of the first connection area (51).
10. Luminaire (1) according to claim 9, characterized in that the groove (3) comprises a second undercut (32), the second undercut (32) overlapping the first connection area (51).
11. Luminaire (1) according to one of claims 1 to 10, characterized in that the first connection area (51) is formed substantially hook-shaped.
12. Luminaire (1) according to one of claims 1 to 11, characterized in that at least one slot (56) is formed in the second connection area (52) which, in the assembled state of the clamping member (5), extends perpendicular to the longitudinal extension of the groove (3).
13. Luminaire (1) according to one of claims 1 to 12, characterized in that the edges (41) of the second housing element (4) are rounded, at least in the region of the clamping members (5).
14. Luminaire (1) according to one of the preceding claims, characterized in that the luminaire (1) further comprises a seal (7) which is arranged between the first housing element (2) and the second housing element (4) and rests against the first housing element (2) and the second housing element (4), the first housing element (2) being clamped by the clamping member (5) relative to the second housing element (4) in the assembled state so that the second housing element (4) is pressed against the seal (7), and the seal (7) seals the first housing element (2) against the second housing element (4).

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