EP3120072B1 - Mast attachment - Google Patents

Description

The invention relates to a fastening device for fastening a lamp to a mast braid according to the preamble of claim 1.

Conventionally, lights, especially outdoor lights, attached to a mast braid of a lamp post. The mast braid typically forms the end of a lamp post and is usually designed in the manner of a cylinder. Usually, the mast braid has a diameter of about 30 to 100 mm, usually between 40 and 80 mm.

A conventional fastening device has two main elements, namely an attachment part and a connection element. The attachment part comprises a cylinder section for placement on a mast braid. The cylinder portion extends in a longitudinal direction over a cylinder length. A conventional fastening device is thus mounted on a lamp post by the cylinder portion of the attachment is pushed in the longitudinal direction of the mast braid. The cylinder section is correspondingly designed in the manner of an open hollow cylinder so that it can be pushed onto the mast braid in the longitudinal direction. In addition, the cylinder portion, which is in the manner of a hollow cylinder is formed, in its interior a cylinder diameter on, which is only slightly larger, usually less than 10%, in particular less than 5%, than the diameter of the mast braid, so that the attachment with the cylinder portion easy and in good fit on the Mast braid can be pushed in the longitudinal direction. Thereafter, there is usually a jamming of cylinder section with the mast braid, for which purpose, known to those skilled clamping devices are used. For example, the clamping device may comprise a screw, the thread of which corresponds to an internal thread arranged in the cylinder jacket of the cylinder section, so that the screw can be screwed through the cylinder jacket of the cylinder section and pressed against the mast head. The skilled person is also familiar with other suitable clamping devices.

In conventional fastening devices, the connecting element for connecting the lamp is formed and connected to the attachment part via an articulated connection. Thus, a luminaire which can correspondingly correspond to the connection element can be fastened to the connection element, so that the luminaire can be fastened to the luminaire pole via the articulated connection between connection element and attachment part. For this purpose, the connection element can, for example, have a flat connection side to which a luminaire with a corresponding flat side, which is designed as an interface for connecting the luminaire, can be applied. For example, light and connection element may have mutually corresponding latching elements, via which they can be locked together and secured to each other. For example, they may have mutually corresponding threads over which they can be screwed together. There are a variety of different connection elements with each different trained suitable connection pages known. The articulated connection usually allows tilting of the connecting element to the attachment part in a certain angular range, usually in an angular range of about 0 to 20 °. In this angular range, therefore, the lamp can be tilted relative to the lamppost when the lamp is mounted on the fixture on the lamppost.

However, said angular range is not sufficient for many applications of conventional fastening devices. Because the mast braid can be located in different positions relative to the lamppost. For example, the mast braid at the top of the lamp mast can point vertically upwards or perpendicular to the lamppost in the horizontal or include any other angle between them and the lamppost. The mast brace is always fixed in a fixed position on the lamppost. To allow attachment of a lamp to a mast braid so that a desired position of the lamp can be adjusted to the luminaire mast, thus, in principle, the bending of the connection element to the attachment part in a wide angular range is desirable. Conventional fastening devices do not offer such a possibility, however, since in them usually the attachment part and the connection element are connected to each other via a short, curved plane with fixed detent positions, so that a sufficiently stable attachment of connection element can be ensured to the attachment, for secure holding the usually quite heavy lights is required. So that a mounting of lights on a light pole on conventional fastening devices at all mast pegs with significantly different orientation relative to the lamp post is possible, conventional essay parts are open as on both sides Hollow cylinder formed, which are postponed depending on the orientation of the mast brace relative to the lamp post with its one or the other open side first on the mast braid. The alignment possibility of the lamp relative to the lamppost and thus also relative to the ground on which the lamppost is set up, however, are in any case undesirably limited in conventional fastening devices. A generic mast attachment is from the US3213273 known. The invention has for its object to provide a fastening device for attaching a lamp to a mast brace, which at least partially solves the above problems and disadvantages of conventional fasteners and allows stable and variable attachment of a lamp to the mast braid.

As a solution of said technical problem, the invention proposes a fastening device with the features of claim 1. The fastening device according to the invention comprises two holding elements, each having a disc and a running away from the disc over a guide section length guide portion. The guide section has at least sections of a constant guide cross-section, and the disc has a tooth structure on one of its disc sides. The disc has two flat disc sides, which extend over the flat extent of the disc. The flat disc sides limit the disc on two opposite sides. The disc may be circular, for example. The tooth structure is arranged on one of the flat disc sides. The toothing structure can be arranged, for example, over a circular area or an annular area on the disk side, wherein the arrangement of the tooth structure in the respective Area can be interrupted continuously or in sections. As explained below, the circular or annular arrangement of the toothing structure for the variability of the fastening according to the invention or the fastening device according to the invention is particularly advantageous. The guide section can be arranged, for example, on one of the flat disk sides of the disk. For example, the guide section may be arranged on the same flat disk side as the toothed structure or on the opposite flat disk side. In any case, the guide section runs over its guide section length at least with a component perpendicular to the flat extent of the disc. The guide cross-section of the guide section may, for example, be oval or polygonal, in particular square or rectangular.

In the fastening device according to the invention, a first of the two main elements has a guide channel for receiving the guide portions of the two holding elements, and the second of the two main elements has two latching surfaces. In this case, the guide channel extends in a transverse direction and has a cross section which corresponds to the guide cross section. The transverse direction can advantageously extend perpendicular to the longitudinal direction in which the cylinder portion of the attachment extends over its cylinder length. In the event that the guide channel is provided in the connecting element, the transverse direction can be perpendicular to said longitudinal direction, wherein reference is made to the mounting position of the fastening device in which the fastening device is ready for attaching a lamp to a mast braid, wherein the individual elements the fastening device in their Mounting position are arranged to each other so that the attachment of a lamp can be made directly to a mast braid on the mounting device.

The guide cross section corresponds to the cross section of the guide channel in such a manner that the holding member with the guide portion with the corresponding guide cross section can be arranged in the guide channel and then a rotation of the holding member relative to the guide channel in a rotational direction about the transverse direction as a rotation axis only to a very limited extent or not at all. For example, in this case the guide section can be arranged completely in the guide channel, for example only a section in the transverse direction of the guide section. For example, a rotation of the holding element to the guide channel may be limited to a measure of less than 5 °, in particular of less than 1 °, when the guide section of the holding element is arranged in the guide channel. For this purpose, embodiments of the guide cross section and the cross section of the guide channel in the manner of an oval or a polygon are particularly advantageous. The regular design of said cross sections, for example as a regular polygon, such as a square or hexagon, may be particularly advantageous so that a rotation in both directions about the transverse direction and in each position of the two main elements can be equally effectively prevented each other. In one embodiment, the guide cross sections of the two holding elements may each be identical. In another embodiment, the guide cross sections of the two holding elements may be different, in which case the guide channel has two sections offset in its transverse direction with different cross sections, each one of the guide cross sections of the two holding elements correspond.

The holding elements can be arranged in the guide channel and displaceable in the transverse direction in the guide channel. The holding elements can thus be arranged in the guide channel and possibly also introduced into the guide channel, for example, be inserted in the transverse direction. In this case, the holding elements can be arranged with their guide portions in the guide channel, wherein the guide portions need not be arranged completely in the guide channel. In any case, the holding elements are then displaceable in the guide channel in the transverse direction, when their guide portions are each arranged at least partially in the guide channel.

The latching surfaces are arranged spaced from one another on the second main element in the transverse direction and each have a latching structure which correspond to the toothing structure of the discs of the two holding elements. In this case, of course, reference is made to the mounting position and in the mounting position aligned elements of the fastening device. This means that a latching structure with the toothing structure of the disc of one of the holding elements corresponds so that the latching structure and the toothing structure can engage such that in the engaged state of latching structure and tooth structure, a rotation of the holding element to the second main element to the transverse direction by less than 5 °, in particular by less than 1 ° is possible. The two latching structures, as well as the two Zahnungsstrukturen, each be identical, but they can also be designed differently from each other. It is always important that a latching structure with the tooth structure of one of the two holding elements corresponds. In one exemplary embodiment, the latching structure and the toothed structure can be designed to correspond to one another in such a way that they equally prevent a rotation from holding element to second main element in both directions of rotation. By way of example, the latching structure and the toothing structure can have chamfered structural elements that correspond to one another and correspond to one another.

According to the invention, the first main element comprises a displacement element, which cooperates with the retaining elements in the mounting position of the fastening device and is designed for displacing the retaining elements in the transverse direction in the guide channel, wherein the retaining elements in the guide channel and the locking surfaces are arranged relative to one another by means of the Displacement element, the toothing structures of the holding elements against the latching surfaces of the second main element can be pressed. Thus, a displacement of the holding elements in the guide channel, and thus in the transverse direction to each other, can be made possible via the displacement element. Characterized in that the latching surfaces are spaced apart in the transverse direction and by the displacement element, a displacement of the holding elements in the transverse direction is made possible pressing the Zahnungsstrukturen of the holding elements to the latching structures of the second main element can be ensured via the displacement element. About the force-loadable displacement by means of the displacement element, the holding elements can be pressed with a certain force in the transverse direction in each case against a latching structure, whereby twisting of the two main elements can be avoided by the transverse direction to each other. In the embodiment of a toothed structure and the locking structure corresponding to it in a circular or annular region, a fixation of the two main elements can thus be achieved be allowed to each other in a large angular range about the transverse direction. In particular, the force with which the toothing structures of the holding elements are pressed against the latching structures can be changed by the displacement element, so that a rotation of the first main element to the second main element via a small force load of the holding elements in the transverse direction and over a high Force load in the transverse direction can be prevented. About the displacement element, a particularly simple fixing of the main elements may be possible. For example, the sliding element can advantageously be actuated with one hand, so that a fitter can align the luminaire with one hand when fixing a luminaire and fix the main elements and thus the desired orientation of the luminaire with the other hand via the displacement element.

For example, the latching surfaces may be provided on the attachment part and the guide channel on the connection element, for example, the latching surfaces may be provided on the connection element and the guide channel on the attachment part. The guide channel can run continuously in the transverse direction. However, the guide channel may also be interrupted in the transverse direction. For example, the two holding elements may be arranged in the mounting position with their guide portions each in different, in particular separate, transverse direction sections of the guide channel. In one embodiment, the holding elements are arranged in the mounting position in the transverse direction between the locking surfaces, wherein the connecting element can enable a force-displacement of the holding elements outwardly in the direction of the locking surfaces. In one embodiment, in the Mounting position, the locking surfaces arranged in the transverse direction between the holding elements, wherein the displacement element allows a force-displacement of the holding elements inwardly toward the locking surfaces.

In one embodiment, the holding elements are arranged in the mounting position in the guide channel so that they adjoin each other with their guide portions. In this embodiment, the discs of the two holding elements in the transverse direction are spaced further apart than the guide portions of the holding elements. The guide portions may be adjacent to each other so as to abut one another directly in the mounting position or such that they are spaced from each other in the mounting position. In particular, the guide sections of the two holding elements may overlap in the mounting position at their ends facing away from the respective slices in an overlapping region. In particular, this overlapping region can be arranged in the guide channel. In particular, the extent of the overlapping area in the transverse direction can be variable via the displaceability of the holding elements in the transverse direction in the guide channel. Characterized in that the holding elements adjoin each other with their guide portions, a simultaneous displacement of the two holding elements can be made particularly simple and secure. For example, the sliding element can then engage in a particularly simple manner on both retaining elements, for example, the sliding element can be arranged in sections between the retaining elements in the region in which the retaining elements adjoin one another. As a result, a uniform and simultaneous displacement of both holding elements in the guide channel can be made possible, for example, by the displacement element, whereby in particular a uniform pressing of both holding elements against the Catches can be possible, whereby rotation of the two main elements to each other can be particularly effectively and stably prevented. Accordingly, it may be particularly advantageous if in the mounting position of the guide channel and / or the holding elements are arranged in the transverse direction between the locking surfaces, as thereby away from each other in a displacement of the holding elements, which adjoin each other with their guide portions, a particularly good and uniform fixation the two main elements can be realized to each other.

In particular, the provision of said overlap region can be advantageous in that the guide sections of the two holding elements can rest on the guide channel in the guide channel over as large a region as possible in the transverse direction, in particular also in the case of a displacement of the holding elements in the transverse direction relative to one another. About the concern of the guide portions on the inside of the guide channel over the widest possible range twisting of the two main elements can be particularly well avoided. In one embodiment, the common cross section of both holding elements in the overlapping region corresponds to the cross section of the guide channel. In particular, this common cross section can correspond to the guide cross section of one of the two holding elements, in particular when providing two holding elements with identical guide cross sections, to the guiding cross section of each of the two holding elements. As a result, a particularly good guidance of the retaining elements in the guide channel and thus overall a particularly good rotation of the two main elements to each other may be possible.

In one embodiment, the sliding element is in the Mounting position in the overlap region arranged on the two holding elements. As a result, the displacement element can act particularly effectively on both holding elements simultaneously and bring about a uniform displacement of the two holding elements in the guide channel to the respective latching surfaces. In particular, the holding elements and the displacement element in the overlapping region can be designed to each other so that the displacement element can be arranged in the overlap region on both holding elements simultaneously and can ensure a displacement of the displacement elements in the guide channel in the transverse direction in a certain transverse direction section, while at the same time remains arranged two retaining elements. A corresponding fastening device can for example be realized that the sliding element has a thread and that the holding elements in their overlapping areas in each case have a thread corresponding to the thread of the displacement element. It should be noted in particular that the displacement element need not be formed in one piece. However, the displacement element may be integrally formed, for example, comprise a one-piece element with a thread which simultaneously corresponds to the two threads on the two holding elements and can cooperate. The displacement element and / or at least one of the two holding elements in the overlapping region may also have a wedge-shaped portion, wherein a relative displacement of the displacement element to the guide channel and / or the holding elements may cause a displacement of the holding elements in the guide channel. The displacement element can for example also be designed as an expansion element, which engages in recesses on the holding elements, in particular in the overlapping region in the case of an intended overlapping region, and thus a displacement of the Holding elements can be ensured in the guide channel via a corresponding spreading movement. The person skilled in various realization possibilities of the displacement element can be seen.

In one embodiment, the holding elements each have a recess in the overlapping region, wherein the recesses of the two holding elements in the assembly position overlap at least in a recess section, wherein the displacement element is arranged in the mounting position at least partially in the recess section. The displacement element may for example be wedge-shaped or formed as an expansion element and engage in the recess, wherein an actuation of the displacement element, for example, a spreading or a change in position of the displacement element relative to the holding elements, a displacement of the holding elements can be ensured in the guide channel. In addition, a particularly reliable and uniform displacement of the retaining elements in the transverse direction and thus a particularly reliable and uniform pressing of the retaining elements against the locking surfaces can be made possible.

The displacement element may comprise an active element and a set screw, wherein the active element is arranged in the mounting position on the guide portions of both holding elements and the set screw is coupled to the active element so that an actuation of the adjusting screw simultaneous displacement of both holding elements, in particular by the same amount, ensured in the guide channel in the transverse direction. This modular design of the displacement element allows a particularly cost effective and effective realization of the displacement element. For example, the displacement element may comprise a gear coupling, wherein the Adjusting a gear operated and engages the gear on the holding elements. For example, the displacement element having a spreading device as the active element, wherein the adjusting screw adjusts the spreading of the spreading device. In one embodiment, the active element is wedge-shaped, wherein the active element via the screw in a setting direction perpendicular to the transverse direction is displaceable, wherein the cross-section, which has the active element perpendicular to the direction of adjustment, wedge-shaped in the adjustment direction. The change in the cross section may be continuous, for example, in the direction of adjustment over a section. However, the change in the cross section may also be uneven, in particular unsteady, in the direction of adjustment. In particular, the active element may have a thread which corresponds to the adjusting screw and extends in the adjustment direction. By wedge-shaped configuration in the direction of the active element, the active element in the adjustment direction, and thus perpendicular to the transverse direction, be displaced and effect a displacement of at least one of the holding elements in the transverse direction, the active element always rest regardless of its position in the direction of adjustment on the holding element and in a fixed position, which is unchangeable in the transverse direction, may be arranged to the guide channel. In particular, the active element can be arranged between the two holding elements and at the same time act on both holding elements. As a result, a particularly simple and uniform displaceability of the retaining elements in the guide channel can be ensured via the displacement element. The wedge-shaped configuration of the active element and the provision of an adjusting screw in the displacement element enables a particularly simple and favorable realization of the displacement element. In addition, it allows a particularly simple attachment of a lamp to a Mast braid, since the set screw for fixing the two main elements against each other very easy, especially with one hand, is actuated and thus a fixed to the connector light can be particularly easily brought to a desired position to the lamp post and can be fixed relative to the lamp post on the sliding element.

Preferably, the toothing structures of the holding elements and the latching structures of the latching surfaces each have chamfered teeth with inclined surfaces, wherein abut in the mounting position, the inclined surfaces of the toothing structures on the inclined surfaces of the respective corresponding latching structure. In particular, the bevelled teeth of teething structure and corresponding latching structure can rest, for example, positively or non-positively against each other. On the one hand, the embodiment of toothing structure and corresponding latching structure with bevelled teeth is suitable for effectively preventing a twisting of the two main elements relative to one another, in particular when a force directed in the transverse direction presses the structures against one another. In particular, it can also be ensured by such an embodiment of tooth structure and latching structure that when in the mounting position no force acts in the transverse direction on the tooth structures and latching structures for pressing against these structures, a rotation of the two main elements to each other is possible by, for example, positively against each other adjacent slanted teeth of the respective structures due to the inclined surfaces slide apart in the transverse direction, so that a rotation of the main elements to each other is possible. In particular, the toothing structure and corresponding latching structure can be designed to correspond to one another in such a way that their teeth have such inclined surfaces that starting from a positive engagement of the teeth of the structures a sliding apart of locking structure and tooth structure is supported in the transverse direction, so that no counteracting force is applied to the structures. It may thus be possible for a luminaire, after having been mounted on the mast braid via the fastening device according to the invention and the main elements being secured against rotation, to be varied in its orientation by rotation of the main elements of the fastening device, since the structures will be displaced with a corresponding adjustment of the displacement element , which ensures that no transversely acting force presses the structures against each other, can release a rotation of the main elements.

In one embodiment, on the sides of the holding elements, which are opposite in the mounting position in the transverse direction, a spring means may be arranged which is designed such that it exerts a force on the holding elements, which on a displacement of the holding elements to each other and / or sliding apart of Teeth structure and corresponding latching structure acts. In particular, the force can act in the transverse direction. About such a spring device can be ensured that when no force acts on the holding elements, which causes a pressing of locking structure to corresponding tooth structure caused to prevent rotation of the main elements, rotation of the main elements may be possible, in particular because of the sliding apart of latching structure and Teeth structure such that they no longer interlock in the mounting position.

In one embodiment, the second main element in the transverse direction between the locking surfaces a Recess on, in which the first main element is arranged in the mounting position so that the guide channel is arranged with its extension length in the transverse direction between the locking surfaces. For example, the connection element may be provided as the first main element and the attachment part as the second main element or vice versa. By the described embodiment, a particularly robust arrangement can be provided. Because the fact that the second main element receives in its recess the portion with the guide channel of the first main element, the locking surfaces of the second main element can be pressed against the section with the guide channel of the first main element, in which case to this section with the guide channel from both sides, namely from both locking surfaces, a force is uniformly applied, so that a non-destructive loading of this section with a high force is possible and thus a fixation of the two main elements to each other with a high force is possible.

The provision of a guide channel having a polygonal, in particular square cross section and a correspondingly corresponding guide cross section of the holding elements can be particularly advantageous for securing the two main elements against rotation relative to one another. In particular, the square configuration can be advantageous in that, regardless of the relative orientation of the two main elements relative to one another, the two main elements are secured against rotation with an identical holding force against rotation.

In particular, the connection element can have cavities for receiving projections of a luminaire housing on its side facing away from the attachment part. The luminaire housing can be facing away from the attachment part Side, which is designed as a connection side for fixing a lamp housing, mounted and fixed there attached to the connection element. A fixation can be done for example via the provision of brackets to corresponding projections of connection element and luminaire housing or via the screw connection element and luminaire housing. By providing projections on the luminaire housing and the provision of corresponding cavities on the connection element, a particularly good fixation of a luminaire housing to the connection element can be made possible, for example, a relative displacement of the luminaire housing to the connection element can be effectively counteracted along the side facing away from the attachment part , In particular, cavities may be arranged on the connection side, which differ in their dimensions. As a result, it can be ensured, for example, that different luminaire housings, which have projections with different dimensions, can be mounted under engagement of the projections in the cavities on the connection side. As a result, the flexibility of the fastening device can be increased, since a particularly large number of different light housings can be mounted on the connection side of the fastening device. In addition, a plurality of cavities can help that the connecting element has a very high stability, which may be advantageous in view of the usually high weight of light housings. Because of the provision of cavities is ensured that a rib structure is provided in the connection element, which can bring the mentioned increased stability with it. To increase the flexibility of the fastening device according to the invention, ie to achieve compatibility of the fastening device with the largest possible number of light housings, it can be particularly advantageous if the connection side has a flat contact surface, to which a lamp housing can be applied. Since luminaire housings generally have a flat side, with which they can be mounted on any holding device, the fastening device according to the invention can thereby be suitable for the assembly of particularly many different luminaire housings. In particular, it has been found to be advantageous to design the connection element on the connection side, in particular the contact surface, in the manner of a trapezoid. As a result, on the one hand a slim, attractive design, on the other hand, a stable fixation of the lamp housing, in particular on the widening in the trapezoidal base area, be guaranteed. This can be particularly advantageous when the wider base of the trapezium has in the mounting position downwards, so that the lamp housing rests on this side with the maximum weight. In addition, the trapezoidal configuration may be advantageous for the production of the connection element in a casting process.

In particular, at least some of the cavities may have undercuts, hooks being insertable into the cavities and being lockable with the undercuts. For example, the hooks may be provided on the lamp housing. In particular, the hooks may be formed as projections. In this case, the hooks can engage in the cavities of the connecting element and engage in a lowering of the lamp housing relative to the connecting element behind the undercuts and thus lock with the undercuts. As a result, in addition to an effective prevention of a displacement of the lamp housing to the connecting element along the side facing away from the attachment part also tilting of the lamp housing from said side can be effectively prevented. In particular, in this embodiment, a Retaining screw may be provided in the connection element, which may correspond to a thread provided in the corresponding lamp and can secure the screwing with the lamp locking the hook with the undercuts.

The invention further relates to a set comprising a fastening device according to the invention and a lamp which has an interface corresponding to the connection element and is designed for mounting on the connection element via its interface. For example, the luminaire can be designed so that it can be mounted with its interface on the side facing away from the attachment part side of the connection element. The luminaire of the set can be fastened in a particularly simple and stable manner and with a variable orientation to a luminaire mast via the fastening device according to the invention. The invention further relates to the use of a fastening device according to the invention for attaching a lamp to a mast braid.

Figur 1:

in einer Prinzipdarstellung ein Ausführungsbeispiel einer erfindungsgemäßen Befestigungsvorrichtung in einer Explosionsansicht;

Figur 2:

in einer Prinzipdarstellung das Ausführungsbeispiel gemäß Figur 1 in einer Explosionsansicht mit anderer Blickrichtung:

Figur 3:

in einer Prinzipdarstellung den Querschnitt des Ausführungsbeispiels gemäß Figur 1 in der Montageposition;

Figur 4:

in einer Prinzipdarstellung ein erfindungsgemäßes Set mit einer Leuchte und einer Befestigungsvorrichtung.

The invention will be explained in more detail below with reference to an embodiment with reference to four figures. Show it:

FIG. 1:

in an outline representation of an embodiment of a fastening device according to the invention in an exploded view;

FIG. 2:

in a schematic diagram of the embodiment according to FIG. 1 in an exploded view with a different view:

FIG. 3:

in a schematic representation of the cross section of the embodiment according to FIG. 1 in the mounting position;

FIG. 4:

in a schematic representation of an inventive set with a lamp and a fastening device.

In the FIGS. 1 and 2 an embodiment of a fastening device 1 according to the invention is shown schematically in exploded views from different directions. The fastening device 1 comprises as the first main element an attachment part 3 and as a second main element a connection element 4. The connection element 4 has a recess 42 in which the portion of the attachment part 3, in which the guide channel 7 is arranged, can be arranged. The recess 42 is arranged in the transverse direction between the two latching surfaces 40 of the connection element 4. In FIG. 1 only one of the two pads 40 can be seen, the other of the two pads 40 is located at the in FIG. 1 not shown, in FIG. 1 visible locking surface 40 in the transverse direction opposite side.

The guide channel 7 has a square cross-section. The illustrated fastening device 1 according to the invention further comprises two holding elements 5, 6, each having a disc 50, 60, from which a guide portion 52, 62 runs away. The guide portion 52, 62 is located directly on the disc 50, 60 of the holding member 5, 6 and perpendicular to the flat extent of the disc 50, 60. The guide portion 52, 62 has in a directly adjacent to the disc 50, 60 in section Transverse direction on a constant square cross section, which corresponds to the cross section of the guide channel 7. In the illustrated embodiment, the holding element 5, 6, when it is arranged with the guide portion 52, 62 in the guide channel 7, not destructively against the attachment part 3 rotatable. It fills the Guide portion 52, 62 of the holding member 5, 6 with its first portion which starts directly on the disc 50, 60, the cross-section of the guide channel 7 substantially completely and with its second portion which follows in the transverse direction directly to the first portion approximately half of the cross section of the guide channel 7. In the embodiment according to the invention according to the FIGS. 1 and 2 For example, the holding elements 5, 6 can be inserted laterally from the outside in the transverse direction into the guide channel 7, wherein they can overlap with their second portions of their guide portion 52, 62 in an overlapping area, wherein the common cross section of the guide portions 52, 62 in the overlapping area in Substantially corresponds to the cross section of the guide portions 52, 62 in the first section and thus also the cross section of the guide channel 7.

The disk 50, 60 of each holding element 5, 6 has a toothing structure 51, 61 on its flat side facing the guide section 52, 62. The toothing structure 51, 61 corresponds to a latching structure 41, which is arranged on the latching surface 40 of the connection element 4. The teeth of Zahnungsstruktur 51, 61 and latching structure 41 are formed chamfered and are in the mounting position with their inclined surfaces to each other.

In the mounting position, the holding elements 5, 6 are arranged in the guide channel 7 so that they overlap at their ends facing away from the discs 50, 60 in an overlapping region. The size of the overlapping area is dependent on the position of the holding elements 5, 6 in the guide channel 7. In the mounting position, the holding elements 5, 6 in the transverse direction along the guide channel 7 occupy different positions. Depending on the position of the holding elements 5, 6 is the Connection element 4 secured relative to the attachment part 3 against rotation while toothing structure 51, 61 and latching structure 41 mesh, or a rotation of connection element 4 to the attachment part 3 possible while the structures do not mesh. Out FIG. 1 it can be seen that the toothing structures 51, 61 and the latching structure 41 are each arranged in a circular ring. In each case, the structures do not run continuously over the entire circular ring but in sections that are spaced apart from one another. However, the serration structure 51, 61 and the latching structure 41 are designed to correspond to one another such that an anti-rotation of connection element 4 and attachment part 3 in each possible arrangement angle of these two main elements 3, 2 to each other is possible. In the present embodiment, the connection element 4 can be pivoted about the attachment part 3 in a direction of rotation about the transverse direction in an angular range of about 90 ° and fixed in each of the possible positions over the entire angular range relative to the attachment part 3.

The in the FIGS. 1 and 2 illustrated fastening device has a displacement element 9, which comprises a set screw 91 and an active element 92. Out FIG. 2 it can be seen that the holding elements 5, 6 each have a recess 53, 63, in which the active element 92 can be arranged. About the screw 91, the position of the active element 92 in a direction perpendicular to the transverse direction relative to the guide channel 7 is changed, whereas the position of the active element 92 is fixed in the transverse direction to the guide channel 7. For this purpose, the attachment part 3 has an alignment channel, in which the adjusting screw 91 is guided. The active element 92 is designed wedge-shaped in the described embodiment, wherein the cross section of the active element 92, the active element 92nd perpendicular to the direction of adjustment, changed in the direction of adjustment. As a result, the active element 92, when it is arranged in the recesses 53, 63 in the overlapping region of the holding elements 5, 6, cause a displacement of the holding elements 5, 6 in the guide channel 7 in the transverse direction, when the position of the active element 92 via the adjusting screw 91 is changed in the adjustment direction relative to the guide channel 7.

In the described embodiment, the holding elements 5, 6 at their ends facing away from the discs 50, 60 in their recesses 53, 63 each have inclined planes, which correspond to the wedge-forming planes of the active element 92 such that a change in position the active element 92 to the adjusting screw 91 toward the holding elements 5, 6 are moved towards each other in the guide channel 7 and thereby their toothing structures 51, 61 can engage in the corresponding latching structures 41.

From the synopsis of FIGS. 1 and 2 Furthermore, it can be seen that the guide sections 52, 62 of the holding elements 5, 6 are profiled in each case and do not consist of a solid material but have hollow cavities. This configuration of the holding elements 5, 6 is on the one hand a favorable and weight-saving design of the holding elements 5, 6 possible, on the other hand, a stable fixation of the two main elements, namely attachment part 3 and connection element 4 to each other.

The attachment 3 further comprises a cylinder portion 31 for placement on a mast spigot. In the illustrated embodiment, the cylinder portion 31 is both on its outside and on its in the FIGS. 1 and 2 not shown inside cylindrical. Essential for the invention, however, is only that the cylinder portion 31 on its inside as a hollow cylinder or is designed in the manner of a hollow cylinder, so that the attachment part 3 can be placed with the cylinder portion 31 on a mast braid. In the cylinder jacket of the cylinder portion 31 of the attachment part 3 two holes are provided with internal threads, in each of which a screw 12 is screwed. With the help of the screws 12, the cylinder portion 31 of the attachment part 3 can be firmly clamped with a mast braid. The operation and arrangement of the screws 12 is in particular also made FIG. 3 recognizable.

The connection element 4 has at its connection side, which faces away from the attachment part 3, cavities 10 for receiving projections of a lamp housing. Thus, a lamp housing with a suitable interface for attachment to the terminal side of the terminal member 4 are provided with projections, which projections can engage in the cavities 10, whereby a displacement between the lamp housing and the connection element 4 can be effectively avoided. In the illustrated embodiment, a retaining screw 11 is also provided, which can be guided through a bore 110 and can be screwed with a provided in a lamp housing thread. As a result, a particularly firm fixation of the lamp housing to the connection element 4 can take place and the engagement of hooks 100 can be secured in the undercuts of the cavities 10 (see also FIG FIG. 4 ).

In FIG. 3 is a cross section of the in the FIGS. 1 and 2 illustrated fastening device according to the invention shown. In this case, the fastening device is according to FIG. 3 in their mounting position. In the mounting position, the guide portions 52, 62 of the holding elements 5, 6 are arranged in the guide channel 7, wherein they overlap in an overlapping area. Of the Cross section according to FIG. 3 extends through the overlapping region of the guide cross sections 52, 62, in which the holding elements 5, 6 and the in FIG. 2 have recognizable recess 53, 63. In the overlapping region and in the two recesses 53, 63 of the two holding elements 5, 6, the active element 92 of the displacement element 9 is arranged in the mounting position. The active element 92 is fixed via the adjusting screw 91 relative to the attachment part 3. In the in FIG. 3 shown assembly position, the active element 92 is acted upon by the adjusting screw 91 with a force in the direction of adjustment in the direction of the head of the screw 91 and thereby presses the holding elements 5, 6 with their Teeth structures 51, 61 against the two locking structures 41 of the connecting element 4th Off FIG. 3 In addition, the position of the screws 12 and the position of the retaining screw 11 can be seen. About the screws 12, the attachment part 3 is fixed relative to a mast braid, via the screw 11, in the position according to FIG. 3 is completely inserted into the bore 110, a fixing of a lamp housing relative to the connection element 4 is possible.

In FIG. 4 an inventive set comprising a lamp 2 and a fastening device 1 according to the invention is shown. The luminaire 2 has at its interface, with which it can be attached to the connection element 4, hooks 100, which are arranged in such a position that they correspond to the cavities 10 on the connection side of the connection element 4. The cavities 10 have undercuts, in which the hook 100 of the lamp 2 can engage. In the illustrated embodiment, the lamp 2 can be mounted on the fastening device 1 by being placed in a direction perpendicular to the transverse direction on the connection side of the connection element 4, wherein during the placement of the hook 100 in the Hollows 10 of the connection element 4 engage. The lamp 2 can then be lowered in a further direction, which is also perpendicular to the transverse direction and beyond perpendicular to the first-mentioned direction when attaching the lamp 2 to the terminal side of the connecting element 4, whereby the hooks 100 engage in the undercuts of the cavities 10 , About the retaining screw 11 can then be made the final fixation of the lamp 2 relative to the fastening device 1.

From the described embodiments it can be seen that with the fastening device 1 according to the invention a lamp 2 can be very easily and very stably fixed to a mast braid, wherein the deflection of the lamp relative to the mast braid and thus also the emission direction of the lamp 2 via the between the connection element 4 and the attachment part 3 of the fastening device 1 provided articulated connection is very variable adjustable. In this case, an attachment part 3 can be used for a mast braid with a specific diameter, in which the cylinder portion 31 corresponds in its inner diameter with the diameter of the mast braid. In addition, connecting elements 4 with different connection sides can be provided for the fastening device 1 according to the invention, so that different lamps can be fastened to different mast brackets by equipping a fastening device 1 according to the invention with fitting element 4 matching the corresponding lamp and with fitting part 3 matching the corresponding mast braid ,

LIST OF REFERENCE NUMBERS

1

fastening device

2

lamp

3

attachment

4

connecting element

5, 6

retaining element

7

guide channel

9

displacement element

10

excavations

11

retention screw

12

screw

31

cylinder section

40

latching surfaces

41

Rest structure

42

recess

50, 60

disc

51, 61

Zahnungsstruktur

52, 62

guide section

53, 63

recess

91

screw

92

active element

100

hook

Claims (14)

1. Attachment device (1) for fastening a luminaire (2) to a mast spigot comprising an attachment part (3) and a connecting part (4) as two main parts (3, 4), wherein the attachment part (3) has a cylinder portion (31) for placing onto a mast spigot that extends in a longitudinal direction over a cylinder length, wherein the connecting element (4) is configured for connecting the luminaire (2) and is connected to the attachment part (3) by an articulated joint, wherein the attachment device (1) comprises two retaining elements (5, 6), each of which has a disk (50, 60) as well as a guiding portion (52, 62) running away from the disk (50, 60) over a guiding portion length, wherein the guiding portion (52, 62) has a constant guiding cross-section at least in sections and the disk (50, 60) has a toothed structure (51, 61) on one of its disk sides, wherein a first of the two main parts (3, 4) has a guiding channel (7) for receiving the guiding portions (52, 53) of the two retaining elements (5, 6) and the second of the two main elements (3, 4) has two latching surfaces (40), wherein the guiding channel (7) extends in a transverse direction and has a cross-section that corresponds to the guiding cross-section, wherein the retaining elements (5, 6) can be placed in the guiding channel (7) and are slidable in the transverse direction, characterized in that the latching surfaces (40) are spaced from each other in the transverse direction and each of them has a latching structure (41) that corresponds to the toothed structure (51, 61) of the disk sides, wherein the first main element (3, 4) comprises a sliding element (9) that cooperates, in a mounting position of the attachment device (1), with the retaining elements (5, 6) and that is configured for sliding the retaining elements (5, 6) in the transverse direction in the guiding channel (7) by applying a force, wherein the retaining elements (5, 6) in the guiding channel (7) and the latching surfaces (40) are arranged relative to one another so that the toothed structures (51, 61) of the retaining elements (5, 6) can be pressed against the latching surfaces (40) of the second main element (3, 4) by means of the sliding element (9).
2. Attachment device (1) according to claim 1, characterized in that the retaining elements (5, 6) are placed in the mounting position in the guiding channel (7) in such a manner that they are adjacent to one another with their guiding portions (52, 62).
3. Attachment device (1) according to claim 2, characterized in that the guiding portions (52, 62) of both retaining elements (5, 6) overlap one another in the mounting position at their ends facing away from the respective disks (50, 60) in an overlapping area.
4. Attachment device (1) according to claim 3, characterized in that the sliding element (9) is placed in the mounting position in the overlapping area on the two retaining elements (5, 6).
5. Attachment device (1) according to claim 4, characterized in that each of the retaining elements (5, 6) has a recess (53, 63) in the overlapping area, wherein the recesses (53, 63) of the two retaining elements (5, 6) overlap in the mounting position at least in a recess section, wherein the sliding element (9) is placed in the mounting position at least in sections in the recess section.
6. Attachment device (1) according to one of the preceding claims, characterized in that the sliding element (9) has an active element (92) and an adjusting screw (91), wherein the active element (92) is placed in the mounting position on the guiding sections (52, 62) of the two retaining elements (5, 6) and the adjusting screw (91) is coupled to the active element (92) in such a manner that an actuation of the adjusting screw (91) ensures a simultaneous sliding of both retaining elements (5, 6), in particular over the same distance, in the guiding channel (7) in the transverse direction.
7. Attachment device (1) according to claim 6, characterized in that the active element (92) is configured wedge-shaped, wherein the active element (92) is slidable in an adjustment direction perpendicularly to the transverse direction by means of the adjusting screw (91), wherein the cross-section that the active element (92) has perpendicularly to the adjustment direction, changes in a wedge shape in the adjustment direction.
8. Attachment device (1) according to one of the preceding claims, characterized in that the toothed structures (51, 61) of the retaining elements (5, 6) and the latching structures (41) of the latching surfaces (40) have respectively bevelled teeth with inclined surfaces, wherein the inclined surfaces of the toothed structures (51, 61) bear, in the mounting position, on the inclined surfaces of the respectively corresponding latching structures (41).
9. Attachment device (1) according to one of the preceding claims, characterized in that the second main element (3, 4) has, in the transverse direction between the latching surfaces (40), a recess (42) in which the first main element (3, 4) is placed in such a manner that the guiding channel (7) is placed with its extension length in the transverse direction between the latching surfaces (40).
10. Attachment device (1) according to one of the preceding claims, characterized in that the guiding channel (7) has a polygonal cross-section, in particular a square cross-section.
11. Attachment device (1) according to one of the preceding claims, characterized in that the connecting element (4) has cavities for receiving the projections of a luminaire housing on its side turned away from the attachment part (3).
12. Attachment device (1) according to claim 11, characterized in that the cavities (10) have undercuts, wherein hooks (100) can be introduced into the cavities and can be latched with the undercuts.
13. Set comprising an attachment device (1) according to one of the preceding claims as well as a luminaire (2) that has an interface corresponding to the connecting element (4) and that is configured for mounting to the connecting element (4) over its interface.
14. Use of an attachment device (1) according to one of the claims 1 to 12 for the attachment of a luminaire (2) to a mast spigot.

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