EP3685097B1 - Lighting device with rotation stopper - Google Patents

Lighting device with rotation stopper Download PDF

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Publication number
EP3685097B1
EP3685097B1 EP18759060.9A EP18759060A EP3685097B1 EP 3685097 B1 EP3685097 B1 EP 3685097B1 EP 18759060 A EP18759060 A EP 18759060A EP 3685097 B1 EP3685097 B1 EP 3685097B1
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EP
European Patent Office
Prior art keywords
stop
rotation
stop part
flexible
lamp
Prior art date
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Application number
EP18759060.9A
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German (de)
French (fr)
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EP3685097A1 (en
Inventor
Uwe Vogel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zumtobel Lighting GmbH Germany
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Zumtobel Lighting GmbH Germany
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Publication of EP3685097A1 publication Critical patent/EP3685097A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V1/00—Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
    • F21V1/10—Rotating shades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/02—Fastening of light sources or lamp holders with provision for adjustment, e.g. for focusing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14—Adjustable mountings
    • F21V21/30—Pivoted housings or frames

Definitions

  • the present invention relates to a lamp with two housing parts that can be rotated relative to one another about an axis of rotation and a stop for limiting the rotational movement of the housing parts.
  • one of the housing parts is provided for mounting the luminaire on a surface (e.g. wall or ceiling).
  • the other housing part usually carries the illuminant, which, due to the rotatable arrangement with respect to the fixed housing part, can be rotated around the defined axis of rotation and can thus be aligned as desired over the specified rotation angle range.
  • a lamp usually has a (rotary) stop.
  • This usually has two stop partners, which work equally with one another in both directions of rotation, in that they come into contact with one another after almost one complete revolution in order to limit the rotational movement of the housing parts with respect to one another.
  • one of the stop partners of the stop is usually provided on the permanently mounted housing part and the other stop partner is provided on the housing part rotatable relative thereto in such a way that the stop limits the rotation of the lamp after an essentially almost complete rotation.
  • the area of application of the lamp is limited to below 360 °, usually around 350 ° to 355 °.
  • the reason for this is the width of the mutually corresponding stop partners, which, due to their given width in the direction of rotation, do not allow a complete 360 ° rotation.
  • Luminaires with housing parts that can be rotated relative to one another are known from WO 2011/019945 A1 , EP 2 757 308 A1 , US 2009/213595 A1 , EP 1 174 307 A2 and EP0508142 A2 .
  • the present invention relates to a lamp with a first housing part and a second housing part, which can be rotated relative to one another about an axis of rotation.
  • the luminaire also has a stop which is designed in such a way that the housing parts can rotate relative to one another in both opposite directions of rotation of the housing parts around the axis of rotation (or an angle of rotation of the housing parts).
  • the stop has a first stop part, which is connected to the first housing part, and a second stop part, which is connected to the second housing part.
  • the stop parts are designed in such a way that they interact to limit the rotary movement in each direction of rotation, preferably cooperate at a stop point.
  • At least one of the stop parts is designed to be flexible in such a way that this flexible stop part (11) is deformed when the two stop parts (11, 21) interact by rotating the housing parts (10, 20) relative to one another, so that the stop is at least seen in the direction of rotation can be offset.
  • a "stop point” is understood to mean the point of point, line or surface contact between the stop partners - that is, the stop parts - during the effective contact of the two to limit the rotational movement or the rotational angle.
  • a lamp with such a stop By means of a lamp with such a stop it is made possible that two housing parts which can be rotated relative to one another are limited in their rotational movement on the one hand, while at the same time a deformation of at least one of the stop parts caused by the interaction of the stop parts while maintaining the rotation angle-limiting effect of the stop parts is in turn a comparison to conventional fixed stops increased angle of rotation of the housing parts relative to each other.
  • a lamp can be provided with a corresponding stop which, for example, enables a complete 360 ° rotation of the housing parts relative to one another.
  • the stop thus offers an enlarged range of the angle of rotation with at the same time reliable rotation limitation in comparison to comparable lights with a rigid fixed stop, as is known from the prior art. Thanks to its flexible design, the stop can also be optimally adapted to the given conditions.
  • the stop parts are designed in such a way that they interact to limit the rotational movement in each direction of rotation at a stop point, the at least one stop part being so flexible that the stop point, viewed against the direction of rotation of the housing part having this stop part, is seen with respect to this housing part by deformation of the at least one stop part is relocatable. Due to the safe offset of the stop point, a safe installation in a defined point, as previously defined, can be made possible over the entire effective range of the stop.
  • the stop parts are preferably located in a movement path of the respective other stop part when the housing parts are rotated relative to each other. This enables a direct interaction of the stop parts, which in turn results in a simplification of the structure of the lamp.
  • the at least one stop part can be provided pivotably so that when the two stop parts interact by rotating the housing parts relative to one another, the at least one stop part is flexibly pivoted, preferably the stop point is offset by deformation of the at least one stop part.
  • the pivotable stop part can have a film hinge via which it is flexibly connected to the associated housing part.
  • the flexible stop part can maintain its flexibility as a result of the material, for example by manufacturing it from a flexible or elastic material, and / or due to its geometry, for example through an area of small material thickness.
  • the flexible stop part can be an element made of a flexible or elastic material, which is located, for example, in the path of movement of the other stop part when the housing parts are rotated relative to each other.
  • an elastic block is conceivable here, which is located in the movement path of the other stop element and thus can be elastically deformed on both sides by the other stop element in such a way as to increase a rotational angle range of the housing parts relative to one another in comparison to a block or stop part made of a rigid material.
  • One of the stop parts can be designed to be flexible - as described above for the at least one stop part - while the other stop part is designed to be rigid.
  • both stop parts are designed to be flexible and thus both stop parts are designed as the flexible stop part described above.
  • the desired offset of the stop point can be set in any way using both stop parts.
  • the stop can be designed to increase an angle of rotation of the housing parts relative to each other by the amount of the deformation-related offset of the flexible stop part in the direction of rotation, preferably by the amount of the offset of the stop point in the respective direction of rotation.
  • An increase in the angle of rotation of the housing parts relative to one another per direction of rotation can preferably be from 1 ° to 20 °, more preferably from 2 ° to 10 °, and particularly preferably from 2.5 ° to 5 °. In this way, a defined increase in the angle of rotation can be achieved by means of the stop. This is preferably chosen such that it compensates for at least the width of the stop.
  • the stop is preferably designed in such a way that the housing parts can be rotated relative to one another around the axis of rotation by (a rotation angle of) at least 360 ° due to the deformation of the flexible stop part or the offset of the stop point.
  • a rotation angle of at least 360 ° due to the deformation of the flexible stop part or the offset of the stop point.
  • the stop parts preferably have a defined width, the amount of the deformation-related offset of the flexible stop part seen in the direction of rotation, preferably the amount of the offset of the stop point, seen in the respective direction of rotation at least a part and particularly preferably at least the entire width of the stop parts compensates.
  • the amount of offset of the stop point or the amount of movement or (elastic) deformation is preferably at least half the sum of the width of the first and second stop parts. In this way, viewed in both directions of rotation, the width of the stop part can at best be completely compensated and thus, for example, a complete 360 ° rotation can be made possible, while the stop remains equally effective.
  • the stop parts viewed in the direction of rotation, each have a width between 0.2 and 20 mm, more preferably between 0.5 and 10 mm.
  • the present invention can thus be used equally for both comparatively wide and narrow stop parts.
  • the stop parts preferably have two stop areas offset from one another when viewed in the direction of rotation, which are designed such that, depending on the direction of rotation, they interact with the facing stop area of the other stop part, preferably to form the stop point.
  • a stop part can serve in both directions of rotation in the case of a substantially 360 ° rotation to the stop, so that the complexity of the lamp or the stop can be designed to be significantly reduced overall.
  • the at least one stop part can have a preferably rigid stop head for interacting with the other stop part to limit the rotary movement. Furthermore, the at least one stop part can furthermore have a flexible stop arm which connects the stop head to the associated housing part and is also designed in such a way that it enables the flexible stop part to be deformed, preferably the offset of the stop part or the stop point at least in the direction of rotation D1, D2 seen. In this way, a particularly simple configuration of a corresponding stop of a lamp according to the invention can be provided and the same can be manufactured particularly easily.
  • the at least one stop part preferably its stop head over its stop arm, can be positioned between two opposite ones as seen in the direction of rotation defined stop positions be flexibly movable. In this way, a stop can be provided which makes it possible to provide a defined stop relative to one another in both directions of rotation independently of the direction of rotation of the two housing parts.
  • the at least one stop part can furthermore have two stop elements which are spaced apart from one another as seen in the direction of rotation and which form the defined stop positions.
  • the stop positions are thus provided by preferably simple structural stoppers in order to provide the stop positions in a defined manner.
  • the at least one stop part preferably its stop head over its stop arm, can be flexibly movable between the two stop positions in such a way that the flexible stop part when interacting with the other stop part depends on the direction of rotation and when the flexible stop part is deformed, preferably the flexible stop arm and in particular when Offset of the stop point with which one of the stop elements can come into contact to limit the rotary movement. In this way, the stop can be safely brought into engagement, while after the maximum offset of the stop part or the stop point, a defined rotational movement or rotational angle limitation can be reliably provided.
  • the first stop part is preferably formed integrally with the first housing part.
  • the second stop part can also be formed integrally with the second housing part.
  • the stop, in particular the stop parts, and preferably at least one or both of the housing parts are made of plastic.
  • an injection molding process for the simple production of the components is suitable here.
  • the stop is preferably designed in such a way that a limiting force of the stop for limiting the rotational movement does not or only slightly increases with increasing deformation or with increasing displacement of the flexible stop part, preferably with increasing displacement of the stop point.
  • the stop therefore does not act (strongly) against the rotary movement and does not push the housing parts again in the opposite direction after the rotary movement has ended.
  • the said limiting force increases with increasing deformation or increasing offset. This can then be the case if no defined stop positions or stop elements are provided.
  • a maximum stop can be set, for example, depending on the material or through the geometric design of the stop parts, while at the same time it causes a reliable rotation limitation even with increasing rotation angle in order to hold the housing parts securely by means of the stop.
  • the housing parts at least the rotatable housing part, can / can be rotatably mounted around the axis of rotation with friction (e.g. the housing parts against one another) in such a way that they are / is mounted in a self-locking manner without the action of external force even if the flexible stop part is deformed.
  • the housing parts can be held securely in the desired relative angle of rotation position even with an effective stop and deformation of the flexible stop.
  • One of the housing parts can be designed in such a way that it is used to fasten the lamp (for example on a wall or ceiling). For this purpose, it can have fastening flanges or other fastening areas, for example. Furthermore, one - preferably the other - housing part can be designed to accommodate lighting means or have the lighting means.
  • FIGS. 1 and 2 show a section of such a lamp 1.
  • This lamp 1 has a first housing part 10 and a second housing part 20.
  • the first housing part 10 is in the Figures 3 to 6 shown in detail.
  • the two housing parts 10, 20 can be rotated relative to one another about an axis of rotation A. This is exemplified with reference to the first housing part 10 in FIG Figures 3 and 4 shown.
  • a lamp 1 By means of such a lamp 1 it should be made possible, for example, to rotate the housing part having a light source (here for example the second housing part 20) relative to a housing part mounted, for example, on a ceiling (here for example the first housing part 10) in order to thus determine the direction of the light output to be able to optionally adjust.
  • the direction of the light emission should be made possible over a defined angle of rotation range (preferably at least 360 °).
  • the lamp 1 also has a stop 2. This is designed in such a way that it is intended to limit a rotational movement of the housing parts 10, 20 relative to one another in both opposite directions of rotation D1, D2 of the housing parts 10, 20 around the axis of rotation A.
  • the stop 2 has a first stop part 11 which is connected to the first housing part 10.
  • the stop 2 also has a second stop part 21 which is connected to the second housing part 20.
  • the stop parts 11, 21 are designed in such a way that they cooperate to limit the rotational movement for each direction of rotation D1, D2, preferably cooperate in a stop point P1, P2.
  • the attachment points P1, P2, as in the Figures 1 and 2 can be seen, can be seen here as the location of the linear or flat contact of the stop partners 11, 21 in operative contact.
  • the stop point P1, P2 can also merge into a point or linear contact.
  • At least one of the stop parts 11, 21 - here the first stop part 11 - is so flexible (preferably elastic) that this flexible stop part 11 is deformed (preferably elastically deformed) when the two stop parts 11, 21 interact with each other by rotating the housing parts 10, 20 ) will.
  • the housing parts 10, 20 can still be rotated further relative to one another by a certain angular range, since the at least one stop part 11 yields (somewhat) due to its flexible design, while the stop 2 remains effective overall.
  • At least one of the stop parts 11, 21 - here the first stop part 11 - is designed so flexibly that the stop point P1, P2 counter to the direction of rotation D1, D2 of the housing part 10, 20, which has this stop part 11, 21 - here the first stop part 11 - So here the first housing part 10 - viewed with respect to this housing part 10, 20, can be displaced by deformation of the at least one stop part 11.
  • the stop parts 11, 21 are located in a movement path of the respective other stop part 21, 11 when the housing parts 10, 20 are rotated relative to each other.
  • a secure engagement of the stop parts 11, 21 for the secure provision of a stop 2 can thus be provided in a simple manner.
  • the at least one stop part 11 can, as shown, preferably be pivotable so that when the two stop parts 11, 21 interact by rotating the housing parts 10, 20 relative to one another, the at least one stop part 11 is flexibly pivoted, preferably the stop point by deformation of the at least one stop part P1, P2 is or can be offset.
  • the stop arm 13 is designed to be elastically flexible and thus ensures that the stop head 12 swings.
  • the pivotable stop part 11 can have a film hinge, as shown, via which the at least one stop part 11 is connected to the associated housing part 10.
  • the flexibility of the flexible stop part 11, 21 can be provided, for example, by the material and / or the geometric configuration of the corresponding stop part 11, 21. It is also conceivable that the stop 2 is designed in such a way that a limiting force of the stop 2 for limiting the rotational movement with increasing deformation of the least one stop part 11, preferably with increasing offset of the stop point P1, P2, either essentially not or only increases slightly or (defined) increases.
  • a counterforce against the direction of rotation can be avoided or kept small even with the action of the stop and deformation of the stop part, while in the latter case additional or rigid blocking elements are dispensed with and the stop 2 is easily achieved through the choice of its material and / or its geometric configuration can form a secure rotary stop.
  • the housing parts 10, 20, at least the rotatable housing part 20 shown here, can be rotatably mounted around the axis of rotation A with friction in such a way that they are / is self-locking even when the flexible stop part 11 is deformed without the action of external force.
  • at least the rotatable housing part 20 is rotatably supported with friction, or both housing parts 10, 20 are preferably rotatably connected to one another with friction, so that the housing parts 10, 20 remain securely in position even when the flexible stop part 11 is effectively abutted and deformed.
  • the self-locking is only overcome when there is an external force, for example when an operator actively rotates the rotatable housing part 20 about the axis of rotation A.
  • the at least one stop part 11 can furthermore have two stop elements 14, 15 which are spaced apart from one another as seen in the direction of rotation D1, D2. These preferably form the defined stop positions S1, S2.
  • the stop part 11, and preferably its stop head 12 via its stop arm 13, is preferably flexibly movable between the two stop positions S1, S2 or stop elements 14, 15 in such a way that the flexible stop part 11 interacts with the other stop part 21 depending on the direction of rotation D1, D2 and when the flexible stop part 11, preferably the flexible stop arm 13, is deformed and especially when the stop point P1, P2 is offset, with one of the stop elements ( Figure 1 : the left stopper 14; Figure 2 : the right stop element 15) can come into contact to limit the rotary movement.
  • a stop element 14, 15 provided offset in the respective direction of rotation D1, D2 is placed in the way of the stop part 11, which when the two stop parts 11, 21 engage with each other and finally (maximum) offset of the stop point P1, P2 due to a relative rotational movement the housing parts 10, 20 allow an increase in the angle of rotation to one another; especially in Compared to a known rigid fixed stop, as known from the prior art.
  • the first stop part 11 is flexible, while the other stop part 21 is rigid.
  • a reverse configuration of the stop parts 11, 21 is also conceivable. It is also conceivable that the first stop part 11 and the second stop part 21 are both designed to be flexible.
  • the stop parts 11, 21 can be designed to be flexible in the same way or also in different ways, so that the stop can be designed to be adapted to the corresponding conditions in any way.
  • the stop 2 is particularly preferably designed in such a way that it enables an angle of rotation of the housing parts 10, 20 relative to one another by the amount of the deformation-related offset of the flexible stop part 11 viewed in the direction of rotation, preferably by the amount of the offset of the stop point P1, P2, in the respective direction of rotation D1, D2 seen to enlarge.
  • An increase in the angle of rotation of the housing parts 10, 20 relative to one another per direction of rotation, D1, D2 preferably has an amount of 1 ° to 20 °, more preferably 2 ° to 10 °, and particularly preferably 2.5 ° to 5 °.
  • the stop 2 is designed in such a way that the housing parts 10, 20 move relative to one another by at least 360 ° due to the deformation of the flexible stop part 11 or due to the offset of the stop point P1, P2 Rotate around axis of rotation A.
  • a stop 2 it can be achieved to enable a complete rotation of the housing parts 10, 20, while on the one hand a secure stop 2 is provided and on the other hand an impermissible twisting of electrical lines of the lamp can be avoided as much as possible.
  • the stop parts 11, 21, viewed in the direction of rotation D1, D2, can have a defined width B1, B2.
  • the amount of the deformation-related offset of the flexible stop part 11 seen in the direction of rotation preferably the amount of the offset of the stop point P1, P2, seen in the respective direction of rotation D1, D2 preferably equalizes at least a part and particularly preferably at least the entire width of the stop parts 11, 21 .
  • An increase in the angle of rotation can thus be achieved and preferably set in any way.
  • the amount of offset of the stop point P1, P2 in the respective direction of rotation D1, D2 seen at least half of the sum of the width B1, B2 of the first and second stop parts 11, 21.
  • the stop parts 11, 21 can each have a width between 0.2 and 20 mm, preferably between 0.5 and 10 mm, viewed in the direction of rotation, for example.
  • the width can be selected as desired, with a median between, on the one hand, the most compact possible design of the stop 2 and, on the other hand, the most stable possible provision and design of the stop 2 should be achieved or found.
  • the stop parts 11, 21 each have two stop areas 16, 26, which are provided offset from one another when viewed in the direction of rotation D1, D2 and are designed in such a way that, depending on the direction of rotation D1, D2, they interact with the facing stop area 26, 16 of the other Stop part 21, 11 cooperate, preferably cooperate to form the stop point P1, P2.
  • the stop parts 11, 21 can be designed in such a way that there is an areal contact in each rotational angle range of their operative contact. It is also conceivable that the planar contact is only present in the maximally deformed state and otherwise there is point or line contact during the effective contact of the stop parts 11, 21.
  • the first stop part 11 can be formed integrally with the first housing part 10.
  • the second stop part 12 which can preferably be formed integrally with the second housing part 20.
  • at least one of the stop parts 11, 21 or also the entire stop 2 is provided as a separate component and is detachably or non-detachably connected to the corresponding housing parts 10, 20.
  • Such a configuration is particularly advantageous, in particular, for retrofitting corresponding lights 1.
  • One of the housing parts 10, 20 can be designed in such a way that it is used to fasten the lamp 1 to a wall or ceiling, for example.
  • the corresponding housing part 10, 20 has, for example, fastening flanges in order to fasten the light 1, for example by means of screws or the like.
  • the other housing part 21, 11 can then be designed to accommodate lighting means or have the lighting means. These lamps are then connected to electrical conductors for power supply.

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  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

Die vorliegende Erfindung betrifft eine Leuchte mit zwei um eine Drehachse relativ zueinander verdrehbaren Gehäuseteilen sowie einem Anschlag zur Begrenzung der Drehbewegung der Gehäuseteile.The present invention relates to a lamp with two housing parts that can be rotated relative to one another about an axis of rotation and a stop for limiting the rotational movement of the housing parts.

Derartige Leuchten sind aus dem Stand der Technik bekannt. In der Regel ist dabei eines der Gehäuseteile zur Montage der Leuchte an einer Fläche (bspw. Wand oder Decke) vorgesehen. Das andere Gehäuseteil trägt in der Regel das Leuchtmittel, welches sich aufgrund der bzgl. des festgelegten Gehäuseteils drehbaren Anordnung um die definierte Drehachse herum drehen und somit über den vorgegebenen Drehwinkelbereich beliebig ausrichten lässt. Um ein unzulässiges Verdrehen der Leitung und somit eine Beschädigung derselben zu vermeiden, weist eine derartige Leuchte in der Regel einen (Dreh-)Anschlag auf. Dieser weist in der Regel zwei Anschlagspartner auf, welche in beiden Drehrichtungen gleichermaßen miteinander wirken, indem sie nach nahezu einer vollständigen Umdrehung in Anlage miteinander kommen, um die Drehbewegung der Gehäuseteile zueinander zu begrenzen. Dabei ist meist einer der Anschlagspartner des Anschlags auf dem festmontierten Gehäuseteil und der andere Anschlagspartner auf dem relativ dazu drehbaren Gehäuseteil derart vorgesehen, dass der Anschlag die Drehung der Leuchte nach einer im Wesentlichen fast vollständigen Umdrehung begrenzt. Bei Verwendung bekannter Festanschläge ist hierbei der Einsatzbereich der Leuchte jedoch auf unter 360°, meist circa 350° bis 355°, begrenzt. Grund hierfür ist die Breite der miteinander korrespondierenden Anschlagspartner, die aufgrund ihrer gegebenen Breite in Drehrichtung gesehen eben keine vollständige 360° Drehung erlauben. Leuchten mit relativ zueinander drehbaren Gehäuseteilen sind bekannt aus WO 2011/019945 A1 , EP 2 757 308 A1 , US 2009/213595 A1 , EP 1 174 307 A2 und EP0508142 A2 .Such lights are known from the prior art. As a rule, one of the housing parts is provided for mounting the luminaire on a surface (e.g. wall or ceiling). The other housing part usually carries the illuminant, which, due to the rotatable arrangement with respect to the fixed housing part, can be rotated around the defined axis of rotation and can thus be aligned as desired over the specified rotation angle range. In order to avoid inadmissible twisting of the line and thus damage to the same, such a lamp usually has a (rotary) stop. This usually has two stop partners, which work equally with one another in both directions of rotation, in that they come into contact with one another after almost one complete revolution in order to limit the rotational movement of the housing parts with respect to one another. In this case, one of the stop partners of the stop is usually provided on the permanently mounted housing part and the other stop partner is provided on the housing part rotatable relative thereto in such a way that the stop limits the rotation of the lamp after an essentially almost complete rotation. When using known fixed stops, however, the area of application of the lamp is limited to below 360 °, usually around 350 ° to 355 °. The reason for this is the width of the mutually corresponding stop partners, which, due to their given width in the direction of rotation, do not allow a complete 360 ° rotation. Luminaires with housing parts that can be rotated relative to one another are known from WO 2011/019945 A1 , EP 2 757 308 A1 , US 2009/213595 A1 , EP 1 174 307 A2 and EP0508142 A2 .

Es ist nunmehr eine Aufgabe der vorliegenden Erfindung, eine Leuchte mit entsprechend relativ zueinander drehbaren Gehäuseteilen sowie einem Anschlag bereitzustellen, welcher vergleichsweise größere Drehwinkel zulässt als ein vorbeschriebener Festanschlag und dabei bevorzugt ferner mit einem geringen Fertigungs- und Montageaufwand bereitgestellt werden kann.It is now an object of the present invention to provide a luminaire with housing parts that can be rotated relative to one another and a stop which allows comparatively larger angles of rotation than a previously described fixed stop and can preferably also be provided with little manufacturing and assembly effort.

Die vorliegende Erfindung betrifft hierzu eine Leuchte mit einem ersten Gehäuseteil und einem zweiten Gehäuseteil, welche relativ zueinander um eine Drehachse herum verdrehbar sind. Die Leuchte weist des Weiteren einen Anschlag auf, welcher derart ausgebildet ist, um eine Drehbewegung der Gehäuseteile relativ zueinander in beiden entgegengesetzten Drehrichtungen der Gehäuseteile um die Drehachse herum (bzw. einen Drehwinkel der Gehäuseteile) zu begrenzen. Der Anschlag weist ein erstes Anschlagsteil auf, welches mit dem ersten Gehäuseteil verbunden ist, und ein zweites Anschlagsteil, welches mit dem zweiten Gehäuseteil verbunden ist. Die Anschlagsteile sind derart ausgebildet, dass sie zur Begrenzung der Drehbewegung je Drehrichtung zusammenwirken, bevorzugt in einem Anschlagspunkt zusammenwirken. Wenigstens eines der Anschlagsteile ist derart flexibel ausgebildet, dass dieses flexible Anschlagsteil (11) beim Zusammenwirken der beiden Anschlagsteile (11, 21) durch Drehung der Gehäuseteile (10, 20) relativ zueinander deformiert wird, so dass der Anschlag während des Zusammenwirkens der Anschlagsteile wenigstens in Drehrichtung gesehen versetzt werden kann.The present invention relates to a lamp with a first housing part and a second housing part, which can be rotated relative to one another about an axis of rotation. The luminaire also has a stop which is designed in such a way that the housing parts can rotate relative to one another in both opposite directions of rotation of the housing parts around the axis of rotation (or an angle of rotation of the housing parts). The stop has a first stop part, which is connected to the first housing part, and a second stop part, which is connected to the second housing part. The stop parts are designed in such a way that they interact to limit the rotary movement in each direction of rotation, preferably cooperate at a stop point. At least one of the stop parts is designed to be flexible in such a way that this flexible stop part (11) is deformed when the two stop parts (11, 21) interact by rotating the housing parts (10, 20) relative to one another, so that the stop is at least seen in the direction of rotation can be offset.

Unter einem "Anschlagspunkt" wird im Rahmen der Erfindung die Stelle des punkt-, linien- oder flächenförmigen Kontaktes der Anschlagspartner - also der Anschlagsteile - während des Wirkkontaktes der beiden zur Begrenzung der Drehbewegung bzw. des Drehwinkels verstanden.In the context of the invention, a "stop point" is understood to mean the point of point, line or surface contact between the stop partners - that is, the stop parts - during the effective contact of the two to limit the rotational movement or the rotational angle.

Mittels einer Leuchte mit einem derartigen Anschlag wird es ermöglicht, dass zwei relativ zueinander verdrehbare Gehäuseteile einerseits in ihrer Drehbewegung begrenzt werden, während jedoch gleichzeitig eine unter Aufrechterhaltung der drehwinkelbegrenzenden Wirkung des Anschlages durch Zusammenwirken der Anschlagsteile bewirkte Deformation wenigstens eines der Anschlagsteile wiederum einen im Vergleich zu konventionellen festen Anschlägen vergrößerten Drehwinkelbereich der Gehäuseteile relativ zueinander zur Folge hat. Somit kann eine Leuchte mit einem entsprechenden Anschlag bereitgestellt werden, welcher beispielsweise eine vollständige 360° Drehung der Gehäuseteile relativ zueinander ermöglicht. Der Anschlag bietet somit einen vergrößerten Drehwinkelbereich bei gleichzeitig sicherer Drehbegrenzung im Vergleich zu vergleichbaren Leuchten mit starrem Festanschlag, wie er aus dem Stand der Technik bekannt ist. Durch seine flexible Ausgestaltung lässt sich der Anschlag zudem an die gegebenen Bedingungen optimal anpassen.By means of a lamp with such a stop it is made possible that two housing parts which can be rotated relative to one another are limited in their rotational movement on the one hand, while at the same time a deformation of at least one of the stop parts caused by the interaction of the stop parts while maintaining the rotation angle-limiting effect of the stop parts is in turn a comparison to conventional fixed stops increased angle of rotation of the housing parts relative to each other. Thus, a lamp can be provided with a corresponding stop which, for example, enables a complete 360 ° rotation of the housing parts relative to one another. The stop thus offers an enlarged range of the angle of rotation with at the same time reliable rotation limitation in comparison to comparable lights with a rigid fixed stop, as is known from the prior art. Thanks to its flexible design, the stop can also be optimally adapted to the given conditions.

Das wenigstens eine Anschlagsteil bzw. das flexible Anschlagsteil ist derart elastisch ausgebildet, dass dieses Anschlagsteil beim Zusammenwirken der beiden Anschlagsteile durch Drehung der Gehäuseteile relativ zueinander elastisch deformiert wird. Dies ermöglicht es in einfacher Weise, das deformierbare Anschlagsteil jederzeit in seine Ausgangs- bzw. Ruheposition zurückzuführen, wenn der Anschlag nicht wirksam ist. Auf diese Weise kann der Anschlag jederzeit sicher bereitgestellt werden.The at least one stop part or the flexible stop part is designed to be elastic in such a way that this stop part is elastically deformed when the two stop parts interact by rotating the housing parts relative to one another. This makes it possible in a simple manner to return the deformable stop part to its starting or rest position at any time, if the stop is not effective. In this way, the stop can be made available safely at any time.

Die Anschlagsteile sind derart ausgebildet, dass sie zur Begrenzung der Drehbewegung je Drehrichtung in einem Anschlagspunkt zusammenwirken, wobei das wenigstens eine Anschlagsteil derart flexibel ausgebildet ist, dass der Anschlagspunkt entgegen der Drehrichtung des dieses Anschlagsteil aufweisenden Gehäuseteils gesehen bezüglich dieses Gehäuseteils durch Deformation des wenigstens einen Anschlagsteils versetzbar ist. Durch den sicheren Versatz des Anschlagspunktes kann über den gesamten Wirkbereich des Anschlages eine sichere Anlage in einem definierten Punkt, wie er zuvor bereits definiert wurde, ermöglicht werden.The stop parts are designed in such a way that they interact to limit the rotational movement in each direction of rotation at a stop point, the at least one stop part being so flexible that the stop point, viewed against the direction of rotation of the housing part having this stop part, is seen with respect to this housing part by deformation of the at least one stop part is relocatable. Due to the safe offset of the stop point, a safe installation in a defined point, as previously defined, can be made possible over the entire effective range of the stop.

Die Anschlagsteile befinden sich bevorzugt in einer Bewegungsbahn des jeweils anderen Anschlagsteils bei relativer Drehung der Gehäuseteile. Dies ermöglicht ein direktes Zusammenwirken der Anschlagsteile, was wiederum eine Vereinfachung des Aufbaus der Leuchte zur Folge hat.The stop parts are preferably located in a movement path of the respective other stop part when the housing parts are rotated relative to each other. This enables a direct interaction of the stop parts, which in turn results in a simplification of the structure of the lamp.

Das wenigstens eine Anschlagsteil kann verschwenkbar vorgesehen sein, sodass beim Zusammenwirken der beiden Anschlagsteile durch Drehung der Gehäuseteile relativ zueinander das wenigstens eine Anschlagsteil flexibel verschwenkt, vorzugsweise durch Deformation des wenigstens einen Anschlagsteils der Anschlagspunkt versetzt wird. Das verschwenkbare Anschlagsteil kann dabei ein Filmscharnier aufweisen, über das es mit dem zugehörigen Gehäuseteil flexibel verbunden ist. Durch eine derartige Ausgestaltung wird eine einfache und materialschonende Bereitstellung eines Anschlagsteils zur Erzielung des Versatzes des Anschlagspunktes ermöglicht, um insgesamt bei sicherem Anschlag eine gegenüber dem Stand der Technik mit starren Festanschlägen vergleichsweise Vergrößerung des Drehwinkels der Gehäuseteile relativ zueinander zu ermöglichen.The at least one stop part can be provided pivotably so that when the two stop parts interact by rotating the housing parts relative to one another, the at least one stop part is flexibly pivoted, preferably the stop point is offset by deformation of the at least one stop part. The pivotable stop part can have a film hinge via which it is flexibly connected to the associated housing part. Such a configuration enables a simple and material-saving provision of a stop part to achieve the offset of the stop point in order to enable an overall increase in the angle of rotation of the housing parts relative to each other with a secure stop compared to the prior art with rigid fixed stops.

Das flexible Anschlagsteil kann seine Flexibilität materialbedingt, beispielsweise durch Herstellung aus einem flexiblen oder elastischen Material, und/oder geometrisch bedingt, beispielsweise durch einen Bereich geringer Materialdicke, erhalten. In einer bevorzugten Ausgestaltungsform kann das flexible Anschlagsteil ein Element aus einem flexiblen bzw. elastischen Material sein, welches sich beispielsweise in der Bewegungsbahn des anderen Anschlagsteils bei relativer Drehung der Gehäuseteile befindet. Denkbar ist hier beispielsweise ein elastischer Block, welcher sich in der Bewegungsbahn des anderen Anschlagselements befindet und somit beidseits von dem anderen Anschlagselement derart elastisch deformiert werden kann, um eben einen Drehwinkelbereich der Gehäuseteile relativ zueinander vergleichsweise zu vergrößern, im Vergleich zu einem Block bzw. Anschlagsteil aus einem starren Material.The flexible stop part can maintain its flexibility as a result of the material, for example by manufacturing it from a flexible or elastic material, and / or due to its geometry, for example through an area of small material thickness. In a preferred embodiment, the flexible stop part can be an element made of a flexible or elastic material, which is located, for example, in the path of movement of the other stop part when the housing parts are rotated relative to each other. For example, an elastic block is conceivable here, which is located in the movement path of the other stop element and thus can be elastically deformed on both sides by the other stop element in such a way as to increase a rotational angle range of the housing parts relative to one another in comparison to a block or stop part made of a rigid material.

Eines der Anschlagsteile kann flexibel - wie zuvor für das wenigstens eine Anschlagsteil beschrieben - ausgebildet sein, während das andere Anschlagsteil starr ausgebildet ist. In einer alternativen Ausgestaltungsform ist es auch denkbar, dass beide Anschlagsteile flexibel ausgebildet sind und somit beide Anschlagsteile als zuvor beschriebenes flexibles Anschlagsteil ausgebildet sind. Somit kann der gewünschte Versatz des Anschlagspunktes in beliebiger Weise durch beide Anschlagsteile eingestellt werden.One of the stop parts can be designed to be flexible - as described above for the at least one stop part - while the other stop part is designed to be rigid. In an alternative embodiment, it is also conceivable that both stop parts are designed to be flexible and thus both stop parts are designed as the flexible stop part described above. Thus, the desired offset of the stop point can be set in any way using both stop parts.

Gemäß einer bevorzugten Ausgestaltungsform kann der Anschlag derart ausgebildet sein, um einen Drehwinkel der Gehäuseteile relativ zueinander um den Betrag des deformationsbedingten Versatzes des flexiblen Anschlagsteils in Drehrichtung gesehen, bevorzugt um den Betrag des Versatzes des Anschlagpunktes in der jeweiligen Drehrichtung gesehen zu vergrößern. Eine Vergrößerung des Drehwinkels der Gehäuseteile relativ zueinander je Drehrichtung kann dabei bevorzugt einen Betrag von 1° bis 20°, weiter bevorzugt 2° bis 10°, und besonders bevorzugt 2,5° bis 5° aufweisen. Auf diese Weise kann eine definierte Vergrößerung des Drehwinkels mittels des Anschlages erzielt werden. Dieser ist bevorzugt derart gewählt, dass er wenigstens die Breite des Anschlags ausgleicht. Bevorzugt ist der Anschlag derart ausgebildet, dass sich die Gehäuseteile aufgrund der Deformation des flexiblen Anschlagsteils bzw. des Versatzes des Anschlagspunktes um (einen Drehwinkel von) wenigstens 360° relativ zueinander um die Drehachse herum verdrehen lassen. Somit wird es mittels der vorliegenden Erfindung bevorzugt erreicht, trotz der Vorsehung eines Anschlages mit einer gegebenen Breite in Drehrichtung gesehen eine Drehung in einem Drehwinkelbereich (bspw. eine vollständige 360° Drehung) zuzulassen, als wäre die Breite des Anschlages in Drehrichtung gesehen gleich null.According to a preferred embodiment, the stop can be designed to increase an angle of rotation of the housing parts relative to each other by the amount of the deformation-related offset of the flexible stop part in the direction of rotation, preferably by the amount of the offset of the stop point in the respective direction of rotation. An increase in the angle of rotation of the housing parts relative to one another per direction of rotation can preferably be from 1 ° to 20 °, more preferably from 2 ° to 10 °, and particularly preferably from 2.5 ° to 5 °. In this way, a defined increase in the angle of rotation can be achieved by means of the stop. This is preferably chosen such that it compensates for at least the width of the stop. The stop is preferably designed in such a way that the housing parts can be rotated relative to one another around the axis of rotation by (a rotation angle of) at least 360 ° due to the deformation of the flexible stop part or the offset of the stop point. Thus, by means of the present invention, it is preferably achieved, despite the provision of a stop with a given width, viewed in the direction of rotation, a rotation in a rotational angle range (e.g. a complete 360 ° rotation) as if the width of the stop, viewed in the direction of rotation, were equal to zero.

In Drehrichtung gesehen weisen die Anschlagsteile bevorzugt eine definierte Breite auf, wobei der Betrag des deformationsbedingten Versatzes des flexiblen Anschlagsteils in Drehrichtung gesehen, bevorzugt der Betrag des Versatzes des Anschlagspunktes, in der jeweiligen Drehrichtung gesehen wenigstens einen Teil und besonders bevorzugt wenigstens die gesamt Breite der Anschlagsteile ausgleicht. Mit anderen Worten soll es mittels der erfindungsgemäßen Leuchte ermöglicht werden, trotz der Bereitstellung eines Anschlages die aufgrund der Breite der Anschlagskomponenten bedingte Drehwinkelbeschränkung zu überwinden und beispielsweise eine vollständige 360° Drehung zuzulassen. Bevorzugt beträgt der Betrag des Versatzes des Anschlagspunktes bzw. der Betrag der Bewegung bzw. der (elastischen) Deformation wenigstens die Hälfte der Summe der Breite des ersten und zweiten Anschlagsteils. Auf diese Weise kann in beide Drehrichtungen gesehen die Breite des Anschlagsteils bestenfalls vollständig ausgeglichen und somit beispielsweise eine vollständige 360° Drehung ermöglicht werden, während der Anschlag gleichermaßen sicher wirksam bleibt.Seen in the direction of rotation, the stop parts preferably have a defined width, the amount of the deformation-related offset of the flexible stop part seen in the direction of rotation, preferably the amount of the offset of the stop point, seen in the respective direction of rotation at least a part and particularly preferably at least the entire width of the stop parts compensates. In other words, it should be made possible by means of the lamp according to the invention, despite the provision of a stop, to overcome the rotation angle limitation due to the width of the stop components and to allow, for example, a full 360 ° rotation. The amount of offset of the stop point or the amount of movement or (elastic) deformation is preferably at least half the sum of the width of the first and second stop parts. In this way, viewed in both directions of rotation, the width of the stop part can at best be completely compensated and thus, for example, a complete 360 ° rotation can be made possible, while the stop remains equally effective.

Die Anschlagsteile weisen bevorzugt in Drehrichtung gesehen jeweils eine Breite zwischen 0,2 und 20 mm, weiter bevorzugt zwischen 0,5 und 10 mm auf. Die vorliegende Erfindung ist somit sowohl für vergleichsweise breite als auch schmale Anschlagsteile gleichermaßen einsetzbar.The stop parts, viewed in the direction of rotation, each have a width between 0.2 and 20 mm, more preferably between 0.5 and 10 mm. The present invention can thus be used equally for both comparatively wide and narrow stop parts.

Die Anschlagsteile weisen bevorzugt zwei in Drehrichtung gesehen versetzt zueinander vorgesehene Anschlagsbereiche auf, welche derart ausgebildet sind, dass sie je nach Drehrichtung mit dem zugewandten Anschlagsbereich des jeweils anderen Anschlagsteils zusammenwirken, vorzugsweise zur Bildung des Anschlagspunktes zusammenwirken. Auf diese Weise kann ein Anschlagsteil bei einer im Wesentlichen 360° Drehung zum Anschlag in beiden Drehrichtungen gesehen gleichermaßen dienen, sodass die Komplexität der Leuchte bzw. des Anschlags insgesamt deutlich reduziert ausgebildet sein kann.The stop parts preferably have two stop areas offset from one another when viewed in the direction of rotation, which are designed such that, depending on the direction of rotation, they interact with the facing stop area of the other stop part, preferably to form the stop point. In this way, a stop part can serve in both directions of rotation in the case of a substantially 360 ° rotation to the stop, so that the complexity of the lamp or the stop can be designed to be significantly reduced overall.

Gemäß einer bevorzugten Ausgestaltungsform kann das wenigstens eine Anschlagsteil einen vorzugsweise starren Anschlagskopf zum Zusammenwirken mit dem anderen Anschlagsteil zur Begrenzung der Drehbewegung aufweisen. Des Weiteren kann das wenigstens eine Anschlagsteil ferner einen flexiblen Anschlagsarm aufweisen, welcher den Anschlagskopf mit dem zugehörigen Gehäuseteil verbindet und ferner derart ausgebildet ist, dass er die Deformation des flexiblen Anschlagsteils ermöglicht, vorzugsweise den Versatz des Anschlagsteils bzw. des Anschlagspunktes wenigstens in Drehrichtung D1, D2 gesehen. Auf diese Weise kann eine besonders einfache Ausgestaltung eines entsprechenden Anschlags einer erfindungsgemäßen Leuchte bereitgestellt und eine besonders einfache Herstellung desselben ermöglicht werden.According to a preferred embodiment, the at least one stop part can have a preferably rigid stop head for interacting with the other stop part to limit the rotary movement. Furthermore, the at least one stop part can furthermore have a flexible stop arm which connects the stop head to the associated housing part and is also designed in such a way that it enables the flexible stop part to be deformed, preferably the offset of the stop part or the stop point at least in the direction of rotation D1, D2 seen. In this way, a particularly simple configuration of a corresponding stop of a lamp according to the invention can be provided and the same can be manufactured particularly easily.

Das wenigstens eine Anschlagsteil, vorzugsweise dessen Anschlagskopf über dessen Anschlagsarm, kann zwischen zwei in Drehrichtung gesehen entgegengesetzten definierten Anschlagspositionen flexibel bewegbar angeordnet sein. Auf diese Weise kann ein Anschlag bereitgestellt werden, welcher es ermöglicht, unabhängig von der Drehrichtung der beiden Gehäuseteile relativ zueinander in beiden Drehrichtungen einen definierten Anschlag bereitzustellen.The at least one stop part, preferably its stop head over its stop arm, can be positioned between two opposite ones as seen in the direction of rotation defined stop positions be flexibly movable. In this way, a stop can be provided which makes it possible to provide a defined stop relative to one another in both directions of rotation independently of the direction of rotation of the two housing parts.

Das wenigstens eine Anschlagsteil kann des Weiteren ferner zwei in Drehrichtung gesehen voneinander beabstandete Stoppelemente aufweisen, welche die definierten Anschlagspositionen bilden. Die Anschlagspositionen werden somit durch bevorzugt einfache strukturelle Stopper bereitgestellt, um somit die Anschlagspositionen definiert bereitzustellen. Das wenigstens eine Anschlagsteil, vorzugsweise dessen Anschlagskopf über dessen Anschlagsarm, kann zwischen den zwei Anschlagspositionen derart flexibel bewegbar angeordnet sein, dass das flexible Anschlagsteil bei Zusammenwirken mit dem anderen Anschlagsteil je nach Drehrichtung und bei Deformation des flexiblen Anschlagsteils, vorzugsweise des flexiblen Anschlagsarmes und insbesondere bei Versatz des Anschlagspunktes, mit jeweils einem der Stoppelemente zum Begrenzen der Drehbewegung in Kontakt gelangen kann. Auf diese Weise kann der Anschlag sicher in Eingriff gebracht werden, während nach maximalem Versatz des Anschlagsteils bzw. des Anschlagspunktes eine definierte Drehbewegungs- bzw. Drehwinkelbegrenzung sicher bereitgestellt werden kann.The at least one stop part can furthermore have two stop elements which are spaced apart from one another as seen in the direction of rotation and which form the defined stop positions. The stop positions are thus provided by preferably simple structural stoppers in order to provide the stop positions in a defined manner. The at least one stop part, preferably its stop head over its stop arm, can be flexibly movable between the two stop positions in such a way that the flexible stop part when interacting with the other stop part depends on the direction of rotation and when the flexible stop part is deformed, preferably the flexible stop arm and in particular when Offset of the stop point with which one of the stop elements can come into contact to limit the rotary movement. In this way, the stop can be safely brought into engagement, while after the maximum offset of the stop part or the stop point, a defined rotational movement or rotational angle limitation can be reliably provided.

Das erste Anschlagsteil ist bevorzugt integral mit dem ersten Gehäuseteil ausgebildet. Alternativ oder ergänzend kann auch das zweite Anschlagsteil integral mit dem zweiten Gehäuseteil ausgebildet sein. In einer besonders bevorzugten Ausgestaltungsform ist der Anschlag, insbesondere die Anschlagsteile, und bevorzugt wenigstens eines oder beides der Gehäuseteile aus Kunststoff hergestellt. Insbesondere bietet sich hier ein Spritzgussverfahren zur einfachen Herstellung der Bauteile an.The first stop part is preferably formed integrally with the first housing part. As an alternative or in addition, the second stop part can also be formed integrally with the second housing part. In a particularly preferred embodiment, the stop, in particular the stop parts, and preferably at least one or both of the housing parts are made of plastic. In particular, an injection molding process for the simple production of the components is suitable here.

Der Anschlag ist bevorzugt derart ausgebildet, dass eine Begrenzungskraft des Anschlags zur Begrenzung der Drehbewegung mit zunehmender Deformation bzw. mit zunehmendem Versatz des flexiblen Anschlagsteils, vorzugsweise mit zunehmendem Versatz des Anschlagpunktes, nicht oder nur geringfügig zunimmt. Somit wirkt der Anschlag nicht (stark) entgegen der Drehbewegung und drängt die Gehäuseteile nach Beendigung der Drehbewegung nicht wieder in entgegengesetzter Richtung. Alternativ ist es jedoch auch denkbar, dass die besagte Begrenzungskraft mit zunehmender Deformation bzw. zunehmendem Versatz zunimmt. Dies kann dann der Fall sein, wenn keine definierten Anschlagspositionen bzw. Stoppelemente bereitgestellt sind. Somit kann ein maximaler Anschlag bspw. materialbedingt oder durch geometrische Ausgestaltung der Anschlagsteile eingestellt werden, während er gleichzeitig eine sichere Drehbegrenzung auch bei zunehmenden Drehwinkel bewirkt, um mittels des Anschlags die Gehäuseteile sicher zu halten.The stop is preferably designed in such a way that a limiting force of the stop for limiting the rotational movement does not or only slightly increases with increasing deformation or with increasing displacement of the flexible stop part, preferably with increasing displacement of the stop point. The stop therefore does not act (strongly) against the rotary movement and does not push the housing parts again in the opposite direction after the rotary movement has ended. Alternatively, however, it is also conceivable that the said limiting force increases with increasing deformation or increasing offset. This can then be the case if no defined stop positions or stop elements are provided. Thus, a maximum stop can be set, for example, depending on the material or through the geometric design of the stop parts, while at the same time it causes a reliable rotation limitation even with increasing rotation angle in order to hold the housing parts securely by means of the stop.

Die Gehäuseteile, wenigstens das verdrehbare Gehäuseteil, können/kann derart um die Drehachse herum reibungsbehaftet drehbar gelagert sein (bspw. die Gehäuseteile aneinander), dass sie/es ohne äußere Krafteinwirkung auch bei Deformation des flexiblen Anschlagsteils selbsthemmend gelagert sind/ist. Somit können die Gehäuseteile auch bei wirksamem Anschlag und Deformation des flexiblen Anschlags sicher in der gewünschten relativen Drehwinkelposition gehalten werden.The housing parts, at least the rotatable housing part, can / can be rotatably mounted around the axis of rotation with friction (e.g. the housing parts against one another) in such a way that they are / is mounted in a self-locking manner without the action of external force even if the flexible stop part is deformed. Thus, the housing parts can be held securely in the desired relative angle of rotation position even with an effective stop and deformation of the flexible stop.

Eines der Gehäuseteile kann derart ausgebildet sein, dass es der Befestigung der Leuchte (bspw. an einer Wand oder Decke) dient. Hierzu kann es bspw. Befestigungsflansche oder andere Befestigungsbereiche aufweisen. Des Weiteren kann eines - bevorzugt das andere - Gehäuseteil zur Aufnahme von Leuchtmitteln ausgebildet sein bzw. die Leuchtmittel aufweisen.One of the housing parts can be designed in such a way that it is used to fasten the lamp (for example on a wall or ceiling). For this purpose, it can have fastening flanges or other fastening areas, for example. Furthermore, one - preferably the other - housing part can be designed to accommodate lighting means or have the lighting means.

Weitere Ausgestaltungen und Vorteile der vorliegenden Erfindung werden anhand der Figuren der begleitenden Zeichnungen im Weiteren beschrieben. Es zeigen:

Figur 1
einen Ausschnitt einer erfindungsgemäßen Leuchte im Bereich eines Anschlags im Zeitpunkt einer Drehbewegungs- bzw. Drehwinkelbegrenzung im Uhrzeigersinn,
Figur 2
den Ausschnitt der erfindungsgemäßen Leuchte gemäß Figur 1 bei einer Drehbewegungs- bzw. Drehwinkelbegrenzung gegen den Uhrzeigersinn,
Figur 3
ein erstes Gehäuseteil der erfindungsgemäßen Leuchte gemäß Figur 1 in Draufsicht,
Figur 4
das erste Gehäuseteil gemäß Figur 3 in perspektivischer Draufsicht,
Figur 5
das erste Gehäuseteil gemäß Figur 3 in perspektivischer Unteransicht, und
Figur 6
den das erste Anschlagsteil umfassende Ausschnitt "Z" aus Figur 3 in vergrößertem Maßstab.
Further embodiments and advantages of the present invention are described below with reference to the figures of the accompanying drawings. Show it:
Figure 1
a section of a lamp according to the invention in the area of a stop at the time of a clockwise rotational movement or rotational angle limitation,
Figure 2
the section of the lamp according to the invention according to Figure 1 in the case of a rotational movement or angle of rotation limitation in an anti-clockwise direction,
Figure 3
a first housing part of the lamp according to the invention according to Figure 1 in plan view,
Figure 4
the first housing part according to Figure 3 in perspective top view,
Figure 5
the first housing part according to Figure 3 in perspective view from below, and
Figure 6
the cutout "Z" comprising the first stop part Figure 3 on a larger scale.

Die Figuren zeigen ein Ausführungsbeispiel einer erfindungsgemäßen Leuchte 1 bzw. Teile derselben. Figuren 1 und 2 zeigen dabei einen Ausschnitt einer derartigen Leuchte 1. Diese Leuchte 1 weist ein erstes Gehäuseteil 10 und ein zweites Gehäuseteil 20 auf. Das erste Gehäuseteil 10 ist in den Figuren 3 bis 6 im Detail dargestellt. Die beiden Gehäuseteile 10, 20 sind relativ zueinander um eine Drehachse A verdrehbar. Diese ist beispielhaft mit Bezug zum ersten Gehäuseteil 10 in den Figuren 3 und 4 gezeigt. Mittels einer solchen Leuchte 1 soll es ermöglicht werden, beispielsweise das ein Leuchtmittel aufweisende Gehäuseteil (hier beispielsweise das zweite Gehäuseteil 20) relativ zu einem beispielsweise an einer Decke montierten Gehäuseteil (hier beispielsweise das erste Gehäuseteil 10)zu drehen, um somit die Richtung der Lichtabgabe wahlweise einstellen zu können. Dabei soll die Richtung der Lichtabgabe möglichst über einen definierten Drehwinkelbereich (bevorzugt wenigstens 360°) ermöglicht werden.The figures show an embodiment of a lamp 1 according to the invention or parts thereof. Figures 1 and 2 show a section of such a lamp 1. This lamp 1 has a first housing part 10 and a second housing part 20. The first housing part 10 is in the Figures 3 to 6 shown in detail. The two housing parts 10, 20 can be rotated relative to one another about an axis of rotation A. This is exemplified with reference to the first housing part 10 in FIG Figures 3 and 4 shown. By means of such a lamp 1 it should be made possible, for example, to rotate the housing part having a light source (here for example the second housing part 20) relative to a housing part mounted, for example, on a ceiling (here for example the first housing part 10) in order to thus determine the direction of the light output to be able to optionally adjust. The direction of the light emission should be made possible over a defined angle of rotation range (preferably at least 360 °).

Die Leuchte 1 weist des Weiteren einen Anschlag 2 auf. Dieser ist derart ausgebildet, dass er eine Drehbewegung der Gehäuseteile 10, 20 relativ zueinander in beiden entgegensetzten Drehrichtungen D1, D2 der Gehäuseteile 10, 20 um die Drehachse A herum begrenzen soll.The lamp 1 also has a stop 2. This is designed in such a way that it is intended to limit a rotational movement of the housing parts 10, 20 relative to one another in both opposite directions of rotation D1, D2 of the housing parts 10, 20 around the axis of rotation A.

Der Anschlag 2 weist hierzu ein erstes Anschlagsteil 11 auf, welches mit dem ersten Gehäuseteil 10 verbunden ist. Der Anschlag 2 weist des Weiteren ein zweites Anschlagsteil 21 auf, welches mit dem zweiten Gehäuseteil 20 verbunden ist. Die Anschlagsteile 11, 21 sind derart ausgebildet, dass sie zur Begrenzung der Drehbewegung je Drehrichtung D1, D2 zusammenwirken, bevorzugt in einem Anschlagspunkt P1, P2 zusammenwirken. Die Anschlagspunkte P1, P2, wie in den Figuren 1 und 2 zu erkennen ist, sind hier als die Stelle des linien- bzw. flächenförmigen Kontaktes der in Wirkkontakt stehenden Anschlagspartner 11, 21 erkennbar. Je nach Drehwinkelbereich (bspw. bei leichter Drehung in Drehrichtung D2 in Figur 1 oder in Drehrichtung D1 in Figur 2) kann der Anschlagspunkt P1, P2 auch in einen punkt- bzw. linienförmigen Kontakt übergehen.For this purpose, the stop 2 has a first stop part 11 which is connected to the first housing part 10. The stop 2 also has a second stop part 21 which is connected to the second housing part 20. The stop parts 11, 21 are designed in such a way that they cooperate to limit the rotational movement for each direction of rotation D1, D2, preferably cooperate in a stop point P1, P2. The attachment points P1, P2, as in the Figures 1 and 2 can be seen, can be seen here as the location of the linear or flat contact of the stop partners 11, 21 in operative contact. Depending on the angle of rotation (e.g. with a slight rotation in the direction of rotation D2 in Figure 1 or in direction of rotation D1 in Figure 2 ) the stop point P1, P2 can also merge into a point or linear contact.

Wenigstens eines der Anschlagsteile 11, 21 - hier das erste Anschlagsteil 11 - ist derart flexibel (bevorzugt elastisch) ausgebildet, dass dieses flexible Anschlagsteil 11 beim Zusammenwirken der beiden Anschlagsteile 11, 21 durch Drehung der Gehäuseteile 10, 20 relativ zueinander deformiert (bevorzugt elastisch deformiert) wird. Mithin können als die Gehäuseteile 10, 20, sobald die Anschlagsteile 11, 21 in Wirkkontakt miteinander gelangen, noch um einen gewissen Winkelbereich weiter relativ zueinander verdreht werden, da das wenigstens eine Anschlagsteil 11 aufgrund seiner flexiblen Ausgestaltung (etwas) nachgibt, während der Anschlag 2 insgesamt wirksam bleibt.At least one of the stop parts 11, 21 - here the first stop part 11 - is so flexible (preferably elastic) that this flexible stop part 11 is deformed (preferably elastically deformed) when the two stop parts 11, 21 interact with each other by rotating the housing parts 10, 20 ) will. As a result, as soon as the stop parts 11, 21 come into operative contact with one another, the housing parts 10, 20 can still be rotated further relative to one another by a certain angular range, since the at least one stop part 11 yields (somewhat) due to its flexible design, while the stop 2 remains effective overall.

Wenigstens eines der Anschlagsteile 11, 21 - hier das erste Anschlagsteil 11 - ist derart flexibel ausgebildet, dass der Anschlagspunkt P1, P2 entgegen der Drehrichtung D1, D2 des dieses Anschlagsteil 11, 21 - hier das erste Anschlagsteil 11 - aufweisenden Gehäuseteils 10, 20 - hier also das erste Gehäuseteil 10 - gesehen bezüglich dieses Gehäuseteils 10, 20 durch Deformation des wenigstens einen Anschlagsteils 11 versetzbar ist.At least one of the stop parts 11, 21 - here the first stop part 11 - is designed so flexibly that the stop point P1, P2 counter to the direction of rotation D1, D2 of the housing part 10, 20, which has this stop part 11, 21 - here the first stop part 11 - So here the first housing part 10 - viewed with respect to this housing part 10, 20, can be displaced by deformation of the at least one stop part 11.

Vorheriges gilt in gleicher Weise für den Fall, dass das zweite Anschlagsteil 21 des zweiten Gehäuseteils 20 entsprechend ausgebildet ist. Auch ist es denkbar, dass beide Anschlagsteile 11, 21 entsprechend ausgebildet sind.The above applies in the same way to the case that the second stop part 21 of the second housing part 20 is designed accordingly. It is also conceivable that both stop parts 11, 21 are designed accordingly.

Wie dargestellt, kann das wenigstens eine Anschlagsteil 11, 21 - hier das erste Anschlagsteil 11 - einen vorzugweise starren Anschlagskopf 12 zum Zusammenwirken mit dem anderen Anschlagsteil 21 zur Begrenzung der Drehbewegung aufweisen. Des Weiteren weist das hier dargestellte Anschlagsteil 11 ferner einen flexiblen Anschlagsarm 13 auf, welcher den Anschlagskopf 12 mit dem zugehörigen Gehäuseteil 10 verbindet und derart ausgebildet ist, dass er die Deformation des flexiblen Anschlagsteils 11 ermöglicht, vorzugsweise den Versatz des Anschlagsteils 11 bzw. Anschlagspunktes P1, P2 wenigstens in Drehrichtung D1, D2 gesehen. Selbstverständlich kann, wie zuvor bereits beschrieben, das entsprechend andere Anschlagsteil 21 so ausgebildet sein; oder auch beide Anschlagsteile 11, 21 gleichermaßen. Vorliegende ist das andere Anschlagsteil 21 starr ausgebildet.As shown, the at least one stop part 11, 21 - here the first stop part 11 - can have a preferably rigid stop head 12 for interacting with the other stop part 21 to limit the rotational movement. Furthermore, the stop part 11 shown here also has a flexible stop arm 13 which connects the stop head 12 to the associated housing part 10 and is designed in such a way that it enables the flexible stop part 11 to be deformed, preferably the offset of the stop part 11 or stop point P1 , P2 seen at least in the direction of rotation D1, D2. Of course, as already described above, the correspondingly other stop part 21 can be designed in this way; or both stop parts 11, 21 equally. In the present case, the other stop part 21 is rigid.

Wie hier dargestellt, befinden sich zur sicheren Bereitstellung und einfachen Ausgestaltung des Anschlags 2 die Anschlagsteile 11, 21 in einer Bewegungsbahn des jeweils anderen Anschlagsteils 21, 11 bei relativer Drehung der Gehäuseteile 10, 20.As shown here, for the secure provision and simple configuration of the stop 2, the stop parts 11, 21 are located in a movement path of the respective other stop part 21, 11 when the housing parts 10, 20 are rotated relative to each other.

Somit kann ein sicherer Eingriff der Anschlagsteile 11, 21 zur sicheren Bereitstellung eines Anschlags 2 in einfacher Weise bereitgestellt werden.A secure engagement of the stop parts 11, 21 for the secure provision of a stop 2 can thus be provided in a simple manner.

Das wenigstens eine Anschlagsteil 11 kann, wie dargestellt, vorzugsweise verschwenkbar vorgesehen sein, sodass beim Zusammenwirken der beiden Anschlagsteile 11, 21 durch Drehung der Gehäuseteile 10, 20 relativ zueinander das wenigstens eine Anschlagsteil 11 flexibel verschwenkt, vorzugsweise durch Deformation des wenigstens einen Anschlagsteils der Anschlagspunkt P1, P2 versetzt wird bzw. werden kann. Im dargestellten Ausführungsbeispiel ist hierzu der Anschlagsarm 13 elastisch flexibel ausgebildet und sorgt somit für eine Verschwenkung des Anschlagskopfes 12. Das verschwenkbare Anschlagsteil 11 kann dabei ein Filmscharnier, wie dargestellt, aufweisen, über das das wenigstens eine Anschlagsteil 11 mit dem zugehörigen Gehäuseteil 10 verbunden ist.The at least one stop part 11 can, as shown, preferably be pivotable so that when the two stop parts 11, 21 interact by rotating the housing parts 10, 20 relative to one another, the at least one stop part 11 is flexibly pivoted, preferably the stop point by deformation of the at least one stop part P1, P2 is or can be offset. In the illustrated embodiment, the stop arm 13 is designed to be elastically flexible and thus ensures that the stop head 12 swings. The pivotable stop part 11 can have a film hinge, as shown, via which the at least one stop part 11 is connected to the associated housing part 10.

Das flexible Anschlagsteil 11 kann seine Flexibilität materialbedingt, beispielsweise durch Herstellung aus einem flexiblen Material, und/oder geometrisch bedingt, beispielsweise durch einen Bereich geringer Materialdicke, erhalten. Es ist dabei auch denkbar, dass das flexible Anschlagsteil ein Element aus einem flexiblen Material ist, welches sich in der Bewegungsbahn des anderen Anschlagselements bei relativer Drehung der Gehäuseteile 10, 20 befindet. Dabei kann es sich beispielsweise um einen flexiblen oder gummiartigen Block handeln, welcher in der Bewegungsbahn des anderen Anschlagsteils vorgesehen ist und somit durch das andere Anschlagsteils wenigstens teilweise elastisch deformiert werden kann, um bevorzugt den Anschlagspunkt P1, P2 zu versetzen. Auch andere Ausgestaltungsformen eines flexiblen Anschlagsteils sind denkbar. Wie bereits erwähnt kann die Flexibilität des flexiblen Anschlagsteils 11, 21 beispielsweise durch das Material und/oder die geometrische Ausgestaltung des entsprechenden Anschlagsteils 11, 21 bereitgestellt sein. Dabei ist es auch denkbar, dass der Anschlag 2 derart ausgebildet ist, dass eine Begrenzungskraft des Anschlags 2 zur Begrenzung der Drehbewegung mit zunehmender Deformation des wenisgtens einen Anschlagsteils 11, vorzugsweise mit zunehmendem Versatz des Anschlagspunktes P1, P2, entweder im Wesentlichen nicht bzw. nur geringfügig zunimmt oder (definiert) zunimmt. Im erstgenannten Fall kann auch bei Wirkung des Anschlags und Deformation des Anschlagsteils eine Gegenkraft entgegen der Drehrichtung vermieden oder klein gehalten werden, während bei letztgenanntem Fall auf zusätzliche oder starre Blockierelemente verzichtet werden und der Anschlag 2 in einfacher Weise durch die Wahl seines Materials und/oder seiner geometrischen Ausgestaltung einen sicheren Drehanschlag bilden kann.The flexible stop part 11 can maintain its flexibility as a result of the material, for example by being manufactured from a flexible material, and / or due to its geometry, for example due to an area of small material thickness. It is also conceivable that the flexible stop part is an element made of a flexible material which is located in the path of movement of the other stop element when the housing parts 10, 20 are rotated relative to each other. This can be, for example, a flexible or rubber-like block which is provided in the path of movement of the other stop part and can thus be at least partially elastically deformed by the other stop part in order to preferably offset the stop point P1, P2. Other configurations of a flexible stop part are also conceivable. As already mentioned, the flexibility of the flexible stop part 11, 21 can be provided, for example, by the material and / or the geometric configuration of the corresponding stop part 11, 21. It is also conceivable that the stop 2 is designed in such a way that a limiting force of the stop 2 for limiting the rotational movement with increasing deformation of the least one stop part 11, preferably with increasing offset of the stop point P1, P2, either essentially not or only increases slightly or (defined) increases. In the first-mentioned case, a counterforce against the direction of rotation can be avoided or kept small even with the action of the stop and deformation of the stop part, while in the latter case additional or rigid blocking elements are dispensed with and the stop 2 is easily achieved through the choice of its material and / or its geometric configuration can form a secure rotary stop.

Die Gehäuseteile 10, 20, wenigstens das hier dargestellt verdrehbare Gehäuseteil 20, können/kann derart um die Drehachse A herum reibungsbehaftet drehbar gelagert sein, dass sie/es ohne äußere Krafteinwirkung auch bei Deformation des flexiblen Anschlagsteils 11 selbsthemmend sind/ist. Mit anderen Worten ist wenigstens das verdrehbare Gehäuseteil 20 reibungsbehaftet drehbar gelagert bzw. sind bevorzugt beide Gehäuseteile 10, 20 relativ zueinander reibungsbehaftet drehbar miteinander verbunden, so dass auch bei wirksamem Anschlag und Deformation des flexiblen Anschlagsteils 11 die Gehäuseteile 10, 20 sicher positioniert bleiben. Erst bei äußerer Krafteinwirkung, also beispielsweise wenn ein Bediener das verdrehbare Gehäuseteil 20 um die Drehachse A aktiv dreht, wird die Selbsthemmung überwunden.The housing parts 10, 20, at least the rotatable housing part 20 shown here, can be rotatably mounted around the axis of rotation A with friction in such a way that they are / is self-locking even when the flexible stop part 11 is deformed without the action of external force. In other words, at least the rotatable housing part 20 is rotatably supported with friction, or both housing parts 10, 20 are preferably rotatably connected to one another with friction, so that the housing parts 10, 20 remain securely in position even when the flexible stop part 11 is effectively abutted and deformed. The self-locking is only overcome when there is an external force, for example when an operator actively rotates the rotatable housing part 20 about the axis of rotation A.

Das wenigstens eine Anschlagsteil 11, beispielsweise dessen Anschlagskopf 12 über dessen Anschlagsarm 13, kann zwischen zwei in Drehrichtung D1, D2 entgegengesetzten definierten Anschlagspositionen S1, S2 flexibel bewegbar angeordnet sein. Diese Anschlagspositionen S1, S2 sind in dem dargestellten Ausgestaltungsbeispiel durch strukturelle Merkmale, wie im Folgenden beschrieben, bereitgestellt. Es ist jedoch auch denkbar, dass die Anschlagsposition S1, S2 aufgrund einer maximalen Kompression oder eines materialbedingten maximalen Versatzes der Anschlagsteile 11, 21 ermöglicht werden kann.The at least one stop part 11, for example its stop head 12 via its stop arm 13, can be arranged flexibly movable between two defined stop positions S1, S2 opposite in the direction of rotation D1, D2. In the illustrated embodiment, these stop positions S1, S2 are provided by structural features, as described below. However, it is also conceivable that the stop position S1, S2 can be made possible due to a maximum compression or a material-related maximum offset of the stop parts 11, 21.

Das wenigstens eine Anschlagsteil 11 kann ferner zwei in Drehrichtung D1, D2 gesehen voneinander beabstandete Stoppelemente 14, 15 aufweisen. Diese bilden bevorzugt die definierten Anschlagspositionen S1, S2. Das Anschlagsteil 11 und vorzugsweise dessen Anschlagskopf 12 über dessen Anschlagsarm 13, ist zwischen den zwei Anschlagspositionen S1, S2 bzw. Stoppelementen 14, 15 bevorzugt derart flexibel bewegbar angeordnet, dass das flexible Anschlagsteil 11 bei Zusammenwirken mit dem anderen Anschlagsteil 21 je nach Drehrichtung D1, D2 und bei Deformation des flexiblen Anschlagsteils 11, vorzugsweise des flexiblen Anschlagsarmes 13 und insbesondere bei Versatz des Anschlagspunktes P1, P2, mit jeweils einem der Stoppelemente (Figur 1: das linke Stoppelement 14; Figur 2: das rechte Stoppelement 15) zum Begrenzen der Drehbewegung in Kontakt gelangen kann. Somit wird dem Anschlagsteil 11 hier ein in der jeweiligen Drehrichtung D1, D2 versetzt bereitgestelltes Stoppelement 14, 15 in den Weg gestellt, welches bei Eingriff der beiden Anschlagsteile 11, 21 miteinander und schließlich (maximalem) Versatz des Anschlagspunktes P1, P2 aufgrund einer relativen Drehbewegung der Gehäuseteile 10, 20 zueinander eine Vergrößerung des Drehwinkels ermöglicht; insbesondere im Vergleich zu einem bekannten starren Festanschlag, wie aus dem Stand der Technik bekannt.The at least one stop part 11 can furthermore have two stop elements 14, 15 which are spaced apart from one another as seen in the direction of rotation D1, D2. These preferably form the defined stop positions S1, S2. The stop part 11, and preferably its stop head 12 via its stop arm 13, is preferably flexibly movable between the two stop positions S1, S2 or stop elements 14, 15 in such a way that the flexible stop part 11 interacts with the other stop part 21 depending on the direction of rotation D1, D2 and when the flexible stop part 11, preferably the flexible stop arm 13, is deformed and especially when the stop point P1, P2 is offset, with one of the stop elements ( Figure 1 : the left stopper 14; Figure 2 : the right stop element 15) can come into contact to limit the rotary movement. Thus, a stop element 14, 15 provided offset in the respective direction of rotation D1, D2 is placed in the way of the stop part 11, which when the two stop parts 11, 21 engage with each other and finally (maximum) offset of the stop point P1, P2 due to a relative rotational movement the housing parts 10, 20 allow an increase in the angle of rotation to one another; especially in Compared to a known rigid fixed stop, as known from the prior art.

In der hier dargestellten Ausgestaltungsform ist das erste Anschlagsteil 11 flexibel ausgebildet, während das andere Anschlagsteil 21 starr ausgebildet ist. Eine dazu umgekehrte Ausgestaltung der Anschlagsteile 11, 21 ist auch denkbar. Es ist ferner denkbar, dass das erste Anschlagsteil 11 und das zweite Anschlagsteil 21 beide flexibel ausgebildet sind. Dabei können die Anschlagsteile 11, 21 in gleicher Weise oder auch in unterschiedlicher Weise flexibel ausgebildet sein, sodass der Anschlag in beliebiger Weise an die entsprechenden Bedingungen angepasst ausgebildet sein kann.In the embodiment shown here, the first stop part 11 is flexible, while the other stop part 21 is rigid. A reverse configuration of the stop parts 11, 21 is also conceivable. It is also conceivable that the first stop part 11 and the second stop part 21 are both designed to be flexible. The stop parts 11, 21 can be designed to be flexible in the same way or also in different ways, so that the stop can be designed to be adapted to the corresponding conditions in any way.

Der Anschlag 2 ist insbesondere bevorzugt derart ausgebildet, dass er es ermöglicht, einen Drehwinkel der Gehäuseteile 10, 20 relativ zueinander um den Betrag des deformationsbedingten Versatzes des flexiblen Anschlagsteils 11 in Drehrichtung gesehen, bevorzugt um den Betrag des Versatzes des Anschlagspunktes P1, P2, in der jeweiligen Drehrichtung D1, D2 gesehen zu vergrößern. Eine Vergrößerung des Drehwinkels der Gehäuseteile 10, 20 relativ zueinander je Drehrichtung, D1, D2 weist bevorzugt einen Betrag von 1° bis 20°, weiter bevorzugt 2° bis 10°, und besonders bevorzugt 2,5° bis 5° auf. Der Anschlag 2 ist gemäß einer besonders bevorzugten Ausgestaltungsform, wie auch in vorliegendem Ausführungsbeispiel dargestellt, derart ausgebildet, dass sich die Gehäuseteile 10, 20 aufgrund der Deformation des flexiblen Anschlagsteils 11 bzw. aufgrund des Versatzes des Anschlagspunktes P1, P2 um wenigstens 360° relativ zueinander um die Drehachse A herum verdrehen lassen. Somit kann es trotz Bereitstellung eines Anschlags 2 erreicht werden, eine vollständige Drehung der Gehäuseteile 10, 20 zu ermöglichen, während einerseits ein sicherer Anschlag 2 bereitgestellt und andererseits ein unzulässiges Verdrehen elektrischer Leitungen der Leuchte bestmöglichen vermieden werden kann.The stop 2 is particularly preferably designed in such a way that it enables an angle of rotation of the housing parts 10, 20 relative to one another by the amount of the deformation-related offset of the flexible stop part 11 viewed in the direction of rotation, preferably by the amount of the offset of the stop point P1, P2, in the respective direction of rotation D1, D2 seen to enlarge. An increase in the angle of rotation of the housing parts 10, 20 relative to one another per direction of rotation, D1, D2 preferably has an amount of 1 ° to 20 °, more preferably 2 ° to 10 °, and particularly preferably 2.5 ° to 5 °. According to a particularly preferred embodiment, as also shown in the present exemplary embodiment, the stop 2 is designed in such a way that the housing parts 10, 20 move relative to one another by at least 360 ° due to the deformation of the flexible stop part 11 or due to the offset of the stop point P1, P2 Rotate around axis of rotation A. Thus, despite the provision of a stop 2, it can be achieved to enable a complete rotation of the housing parts 10, 20, while on the one hand a secure stop 2 is provided and on the other hand an impermissible twisting of electrical lines of the lamp can be avoided as much as possible.

Wie den Ausführungsbeispielen zu entnehmen ist, können die Anschlagsteile 11, 21 in Drehrichtung D1, D2 gesehen eine definierte Breite B1, B2 aufweisen. Der Betrag des deformationsbedingten Versatzes des flexiblen Anschlagsteils 11 in Drehrichtung gesehen, bevorzugt der Betrag des Versatzes des Anschlagspunktes P1, P2, in der jeweiligen Drehrichtung D1, D2 gesehen gleicht bevorzugt wenigstens einem Teil und besonders bevorzugt wenigstens die gesamte Breite der Anschlagsteile 11, 21 aus. Eine Vergrößerung des Drehwinkels kann somit erzielt und bevorzugt in beliebiger Weise eingestellt werden. Gemäß einer besonders bevorzugten Ausgestaltungsform beträgt der Betrag des Versatzes des Anschlagspunktes P1, P2 in der jeweiligen Drehrichtung D1, D2 gesehen wenigstens die Hälfte der Summe der Breite B1, B2 des ersten und zweiten Anschlagsteils 11, 21. Dies ist beispielhaft in den Figuren 1 und 2 der Ausführungsform dargestellt. Auf diese Weise soll erzielt werden, dass bei Bereitstellung eines entsprechenden Anschlags 2 beispielsweise eine 360° Drehung vollständig ermöglicht werden kann. Die Anschlagsteile 11, 21 können beispielsweise in Drehrichtung gesehen jeweils eine Breite zwischen 0,2 und 20 mm, bevorzugt zwischen 0,5 und 10 mm aufweisen. Die Breite ist dabei in der Regel beliebig wählbar, wobei vorzugsweise ein Mittelmaß zwischen einerseits einer möglichst kompakten Ausgestaltung des Anschlags 2 und andererseits einer möglichst stabilen Bereitstellung und Ausführung des Anschlags 2 erzielt bzw. gefunden werden sollte.As can be seen from the exemplary embodiments, the stop parts 11, 21, viewed in the direction of rotation D1, D2, can have a defined width B1, B2. The amount of the deformation-related offset of the flexible stop part 11 seen in the direction of rotation, preferably the amount of the offset of the stop point P1, P2, seen in the respective direction of rotation D1, D2 preferably equalizes at least a part and particularly preferably at least the entire width of the stop parts 11, 21 . An increase in the angle of rotation can thus be achieved and preferably set in any way. According to a particularly preferred embodiment, the amount of offset of the stop point P1, P2 in the respective direction of rotation D1, D2 seen at least half of the sum of the width B1, B2 of the first and second stop parts 11, 21. This is exemplified in FIGS Figures 1 and 2 the embodiment shown. In this way it should be achieved that when a corresponding stop 2 is provided, for example a full 360 ° rotation can be made possible. The stop parts 11, 21 can each have a width between 0.2 and 20 mm, preferably between 0.5 and 10 mm, viewed in the direction of rotation, for example. As a rule, the width can be selected as desired, with a median between, on the one hand, the most compact possible design of the stop 2 and, on the other hand, the most stable possible provision and design of the stop 2 should be achieved or found.

Wie in den Figuren 1, 2 und 6 der Ausführungsform dargestellt, weisen die Anschlagsteile 11, 21 jeweils zwei in Drehrichtung D1, D2 gesehen versetzt zueinander vorgesehene Anschlagsbereiche 16, 26 auf, welche derart ausgebildet sind, dass sie je nach Drehrichtung D1, D2 mit dem zugewandten Anschlagsbereich 26, 16 des jeweils anderen Anschlagsteils 21, 11 zusammenwirken, vorzugsweise zur Bildung des Anschlagspunktes P1, P2 zusammenwirken. In den Figuren 1 und 2 liegt hier bei maximaler Deformation des Anschlagsarmes 13 und Anschlag des Anschlagskopfes 12 an dem jeweiligen Stoppelement 14, 15 ein in Draufsicht linienförmiger bzw. insgesamt ein flächenförmiger Kontakt der Anschlagsteile 11, 21 über deren Anschlagsbereiche 16, 26 vor. Die Anschlagsteile 11, 21 können derart ausgebildet sein, dass in jedem Drehwinkelbereich deren Wirkkontaktes ein flächenförmiger Kontakt vorliegt. Auch ist es denkbar, dass der flächenförmige Kontakt nur im maximal deformierten Zustand vorliegt und ansonsten während des Wirkkontaktes der Anschlagsteile 11, 21 ein punkt- bzw. linienförmiger Kontakt vorliegt.As in the Figures 1, 2 and 6th In the embodiment shown, the stop parts 11, 21 each have two stop areas 16, 26, which are provided offset from one another when viewed in the direction of rotation D1, D2 and are designed in such a way that, depending on the direction of rotation D1, D2, they interact with the facing stop area 26, 16 of the other Stop part 21, 11 cooperate, preferably cooperate to form the stop point P1, P2. In the Figures 1 and 2 With maximum deformation of the stop arm 13 and the stop of the stop head 12 on the respective stop element 14, 15, there is a line-shaped or, overall, flat contact of the stop parts 11, 21 over their stop areas 16, 26 in plan view. The stop parts 11, 21 can be designed in such a way that there is an areal contact in each rotational angle range of their operative contact. It is also conceivable that the planar contact is only present in the maximally deformed state and otherwise there is point or line contact during the effective contact of the stop parts 11, 21.

Das erste Anschlagsteil 11 kann in einer bevorzugten Ausgestaltungsform integral mit dem ersten Gehäuseteil 10 ausgebildet sein. Das gleiche gilt für das zweite Anschlagsteil 12, welches bevorzugt integral mit dem zweiten Gehäuseteil 20 ausgebildet sein kann. Es ist jedoch auch denkbar, dass wenigstens eines der Anschlagsteile 11, 21 oder auch der gesamte Anschlag 2 als separates Bauteil bereitgestellt und mit den entsprechenden Gehäuseteilen 10, 20 lösbar oder unlösbar verbunden ist. Eine solche Ausgestaltung ist insbesondere zum Nachrüsten entsprechender Leuchten 1 besonders vorteilhaft. In einer bevorzugten Ausgestaltungsform ist der Anschlag 2, insbesondere die Anschlagsteile 11, 21, und beispielsweise bei integraler Ausgestaltung ebenso das zugehörige Gehäuseteil 10, 20 aus einem Kunststoff hergestellt; bevorzugt in einem Spritzgussverfahren. Somit können die Bauteile in besonders einfacher Weise bereitgestellt werden.In a preferred embodiment, the first stop part 11 can be formed integrally with the first housing part 10. The same applies to the second stop part 12, which can preferably be formed integrally with the second housing part 20. However, it is also conceivable that at least one of the stop parts 11, 21 or also the entire stop 2 is provided as a separate component and is detachably or non-detachably connected to the corresponding housing parts 10, 20. Such a configuration is particularly advantageous, in particular, for retrofitting corresponding lights 1. In a preferred embodiment, the stop 2, in particular the stop parts 11, 21, and, for example, in the case of an integral design, also the associated housing part 10, 20 made of a plastic; preferably in an injection molding process. The components can thus be provided in a particularly simple manner.

Eines der Gehäuseteile 10, 20 kann derart ausgebildet sein, dass es der Befestigung der Leuchte 1 bspw. an einer Wand oder Decke dient. Hierzu weist das entsprechende Gehäuseteil 10, 20 bspw. Befestigungsflansche auf, um die Leuchte 1 z.B. mittels Schrauben oder dergleichen zu befestigen. Das andere Gehäuseteil 21, 11 kann dann zur Aufnahme von Leuchtmitteln ausgebildet sein bzw. die Leuchtmittel aufweisen. Diese Leuchtmittel sind dann mit elektrischen Leitern zur Stromversorgung verbunden.One of the housing parts 10, 20 can be designed in such a way that it is used to fasten the lamp 1 to a wall or ceiling, for example. For this purpose, the corresponding housing part 10, 20 has, for example, fastening flanges in order to fasten the light 1, for example by means of screws or the like. The other housing part 21, 11 can then be designed to accommodate lighting means or have the lighting means. These lamps are then connected to electrical conductors for power supply.

Die vorliegende Erfindung ist auf das vorhergehende Ausführungsbeispiel nicht beschränkt, sofern es vom Gegenstand der folgenden Ansprüche umfasst ist.The present invention is not restricted to the preceding exemplary embodiment, provided that it is covered by the subject matter of the following claims.

Claims (15)

  1. Lamp (1) comprising
    a first housing portion (10) and a second housing portion (20) which are rotatable relative to one another about an axis of rotation (A),
    a stop (2) which is configured to limit a rotation of the housing portions (10, 20) relative to one another in the two opposite directions of rotation (D1, D2) of the housing portions (10, 20) about the axis of rotation (A),
    wherein the stop (2) comprises a first stop part (11) which is connected to the first housing portion (10) and a second stop part (21) which is connected to the second housing portion (20),
    wherein the stop parts (11, 21) are configured such that they cooperate to limit the rotation for each direction of rotation (D1, D2),
    wherein at least one of the stop parts (11) is configured to be flexible such that
    this flexible stop part (11) is deformed by the rotation of the housing portions (10, 20) relative to one another when the two stop parts (11, 21) cooperate,
    wherein the stop parts (11, 21) are configured such that they cooperate at a stop point (P1, P2) to limit the rotation for each direction of rotation (D1, D2), and
    wherein the at least one of the stop part (11) is configured to be flexible such that,
    viewed against the direction of rotation (D1, D2) of the housing portion (10) comprising this stop part (11), the stop point (P1, P2) can be displaced with respect to this housing portion (10) by deformation of the at least one stop part (11).
  2. Lamp (1) according to Claim 1, wherein the flexible stop part (11) is elastically configured such that it is elastically deformed by the rotation of the housing portions (10, 20) relative to one another when the two stop parts (11, 21) cooperate.
  3. Lamp (1) according to any one of the preceding claims, wherein the stop parts (11, 21) are situated in a movement path of the respective other stop part (21, 11) when the housing portions (10, 20) rotate relative to one another.
  4. Lamp (1) according to any one of the preceding claims, wherein the at least one stop part (11) is disposed such that it can pivot, so that, when the two stop parts (11, 21) cooperate, the at least one stop part pivots flexibly when the housing portions (10, 20) rotate relative to one another and the stop point (P1, P2) is displaced, preferably by deformation of at least one stop part (11),
    wherein the pivotable stop part (11) preferably comprises a film hinge via which it is flexibly connected to the associated housing portion (10).
  5. Lamp (1) according to any one of the preceding claims, wherein the flexibility of the flexible stop part (11) is a result of the material of which it is made, for example a flexible material, and/or a result of its geometry, for example a region of low material thickness, and/or wherein the flexible stop part (11) is preferably an element made of a flexible material which is situated in the movement path of the other stop part (21) when the housing portions (10, 20) rotate relative to one another.
  6. Lamp (1) according to any one of the preceding claims, wherein one of the stop parts (11) is flexible and the other stop part (21) is rigid, or
    wherein the first stop part (11) and the second stop part (21) are both flexible.
  7. Lamp (1) according to any one of the preceding claims, wherein the stop (2) is configured to increase an angle of rotation of the housing portions (10, 20) relative to one another by the amount of the deformation-induced displacement of the flexible stop part (11) viewed in the direction of rotation, preferably by the amount of the displacement of the stop point (P1, P2) viewed in the respective direction of rotation (D1, D2),
    wherein an increase of the angle of rotation of the housing portions (10, 20) relative to one another for each direction of rotation (D1 D2) is preferably 1° to 20°, preferably 2° to 10°, particularly preferably 2.5° to 5°.
  8. Lamp (1) according to any one of the preceding claims, wherein the stop (2) is configured such that, due to the deformation of the flexible stop part (11) or the displacement of the stop point (P1, P2), the housing portions (10, 20) can be rotated at least 360° relative to one another about the axis of rotation (A) .
  9. Lamp (1) according to any one of the preceding claims, wherein, viewed in the direction of rotation (D1, D2), the stop parts (11, 21) have a defined width (B1, B2), and wherein the amount of the deformation-induced displacement of the flexible stop part (11) viewed in the direction of rotation, preferably the amount of displacement of the stop point (P1, P2) viewed in the respective direction of rotation (D1, D2), compensates at least a part and preferably at least the entire width of the stop parts (11, 21) and is preferably at least half of the sum of the width of the first and second stop part (11, 21), and/or
    wherein, viewed in the direction of rotation (D1, D2) the stop parts (11, 21) each have a width (B1, B2) between 0.2 and 20 mm, preferably between 0.5 and 10 mm.
  10. Lamp (1) according to any one of the preceding claims, wherein the stop parts (11, 21) each comprise two stop regions (16, 26) which, viewed in the direction of rotation (D1, D2), are disposed offset relative to one another and are configured to cooperate with the facing stop region (26, 16) of the respective other stop part (21, 11) depending on the direction of rotation (D1, D2), in particular to form the other stop point (P1, P2).
  11. Lamp (1) according to any one of the preceding claims, wherein the at least one stop part (11) comprises a preferably rigid stop head (12) for cooperating with the other stop part (11) to limit the rotation, as well as a flexible stop arm (13) which connects the stop head (12) to the associated housing portion (10) and is configured such that it enables the deformation of the flexible stop part (11), preferably the displacement of the stop part (11) or the stop point (P1, P2).
  12. Lamp (1) according to any one of the preceding claims, wherein the at least one stop part (11), preferably its stop head (12) via its stop arm (13), is flexibly movably disposed between two viewed in the direction of rotation (D1, D2) opposite defined stop positions (S1, S2),
    wherein the at least one stop part (11) preferably further comprises two stop elements (14, 15) which, viewed in the direction of rotation (D1, D2), are spaced apart from one another and form the defined stop positions (S1, S2), wherein the at least one stop part (11), preferably its stop head (12) via its stop arm (13), is preferably flexibly movably disposed between the two stop positions (S1, S2) such that, when cooperating with the other stop part (21) depending on the direction of rotation (D1, D2) and when the flexible stop part (11), preferably of the flexible stop arm (13), is deformed and in particular when the stop point (P1, P2) is displaced, the flexible stop part (11) can come into contact with a respective one of said stopping elements (14, 15) to limit the rotation.
  13. Lamp (1) according to any one of the preceding claims, wherein the first stop part (11) is integrally formed with the first housing portion (10), and/or
    wherein the second stop part (21) is integrally formed with the second housing portion (20), and/or
    wherein the stop (2), preferably the first and/or second stop part (11, 21), is/are made of plastic, and/or
    wherein the first housing portion (10) and/or the second housing portion (20) is/are made of plastic.
  14. Lamp (1) according to any one of the preceding claims, wherein the stop (2) is configured such that a limiting force of the stop (2) to limit the rotation substantially does not increase or increases only slightly with increasing deformation of the at least one stop part (11), preferably with increasing displacement of the stop point (P1, P2), or
    wherein the stop (2) is configured such that a limiting force of the stop (2) to limit the rotation increases with increasing deformation of the at least one stop part (11), preferably with increasing displacement of the stop point (P1, P2).
  15. Lamp (1) according to any one of the preceding claims, wherein the housing portions (10, 20), at least the rotatable housing portion (20), are/is mounted such that they/it can rotate with friction about the axis of rotation (A) in such a way that they/it are/is self-inhibiting without application of an external force, even when the flexible stop part (11) is deformed, and/or
    wherein one of the housing portions (10, 20) comprises fastening regions for fastening the lamp (1), and wherein the other housing portion (20, 10) is configured to accommodate lighting means or comprises lighting means.
EP18759060.9A 2017-09-22 2018-08-13 Lighting device with rotation stopper Active EP3685097B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202017105754.2U DE202017105754U1 (en) 2017-09-22 2017-09-22 Luminaire with stop
PCT/EP2018/071886 WO2019057398A1 (en) 2017-09-22 2018-08-13 Luminaire with a stop

Publications (2)

Publication Number Publication Date
EP3685097A1 EP3685097A1 (en) 2020-07-29
EP3685097B1 true EP3685097B1 (en) 2021-10-06

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Application Number Title Priority Date Filing Date
EP18759060.9A Active EP3685097B1 (en) 2017-09-22 2018-08-13 Lighting device with rotation stopper

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EP (1) EP3685097B1 (en)
CN (2) CN111148938A (en)
DE (1) DE202017105754U1 (en)
WO (1) WO2019057398A1 (en)

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Also Published As

Publication number Publication date
CN115234881A (en) 2022-10-25
EP3685097A1 (en) 2020-07-29
DE202017105754U1 (en) 2019-01-08
WO2019057398A1 (en) 2019-03-28
CN111148938A (en) 2020-05-12
CN115234881B (en) 2024-06-25

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