DK2637486T3

DK2637486T3 - ELECTRIC APPLIANCE WITH AN ELECTRONIC CABINET WITH A HOLDER AND CLIPPING DEVICE

Info

Publication number: DK2637486T3
Application number: DK13158430.2T
Authority: DK
Inventors: Roland Pasedag
Original assignee: Ropag Gmbh
Priority date: 2012-03-09
Filing date: 2013-03-08
Publication date: 2015-08-24
Also published as: EP2637486A1; DE102012101995A1; EP2637486B1; EP2637486B8

Description

Description [0001] The present invention relates to a housing for electrics, which as a part of a recessed luminaire offers an advantageous mounting technique so that a securing of the housing for electrics, in particular as a flush-mounted housing, can be achieved by means of a slight, one-handed rotary motion.

Prior Art [0002] Assembly parts having one part on the one side of a wall, a panel or a flat-like device and another part behind the wall, i.e. beyond the panel or the flat-like device, often use the principle of extendable projection frames or projection clamps in order to prevent the assembly part from dropping out or slipping out of its opening by securing via projection arms.

[0003] In a very plausible manner, US patent document US 5 401 132 A (Holder: Emhart Inc., Priority Date: September 4, 1992) describes the principle of the bulging projections arms for securing a part to be arranged behind a panel, which part belongs to an assembly part uniformly formed by a front part and a rear part, in Fig. 10 and in Figs. 15a, 15b and 15c. A principle of such type works with the deformability of the projection arms. If plastically deformable material is selected, deformation can usually be repeated a few times only. Thus, repeated installation and removal is not recommended.

[0004] Said principle of extendable clamps or extendable projection arms is often also transferred to housings and boxes of electrical appliances. GB 903 723 A (Holder: Chamberlain & Hookham Limited; Priority Date: September 26, 1958), for example, proposes to attach in each case one clamp-like arm to a screw, which arm can fix an indicator disc in a form-fit manner by means of a rotation of the respective screw. Other examples for the fixing of electrical appliances by means of projection arms are indicated in the publications US 5 609 414 A (Inventor: Guiseppe Caluori; Filing Date: November 24, 1995) and EP 0 870 982 A2 (Applicant: ERCO Leuchten GmbH, Priority Date: April 11, 1997).

[0005] Other types of installations and other types of installation methods can also be seen from the patent literature.

[0006] DE 821 811 B (Applicant: Robert Berker; Disclosure Date: October 11, 1951) describes away for securing electro-technical installation devices to a supporting base, wherein said devices are secured by means of a screw which is arranged in the central point of the housing and, if there is a housing for the device, which is to be actuated from the inside of said housing and which engages through a hole of the housing base with the shaft thereof. However, DE 821 811 B does not provide information on how an advantageous configuration of a housing, of a box or of an installation frame could look like, in particular the mounting variants seem to be applicable only to surface-mounted arrangements.

[0007] DE 1 171 044 A (Applicant: Gebriider Merten; Filing Date: May 18, 1960) describes a fixing of electric switches or plugs in a box. According to DE 1 171 044 A, said box serves to accommodate an insert body that can be fixed in housing walls by means of more than two expanding clamps. The expanding clamps are to cooperate with the inner walls of commercially available boxes in a known manner. DE 1 171 044 A neither teaches to install a box in a wall nor in a ceiling. Further, the attention of said description is drawn to small insert bodies such as switches or plugs.

[0008] In order to be able to hide a housing from the observer of electric appliances, such as recessed luminaires, it is popular to install the housings for electrics of recessed luminaires into a wall or into a ceiling, i.e. in a flush-mounted manner.

[0009] Various publications in patent literature propose mounting possibilities for such electrical appliances or housings for electrics to be "flush-mounted".

[0010] EP 1 936 257 A1 (Applicant: Bega Gantenbrink-Leuchten KG; Priority Date: December 20, 2006) describes a mounting possibility for an in-ground lamp. A clamping block is to be guided on a housing of a lamp via a sliding arrangement and, in a fixed position, frictionally connected to a wall of a cavity that is free of undercuts. A design as described in EP 1 936 257 A1 is probably not suitable for the installation in a ceiling due to the weight of the lamp which probably exceeds the friction force of the clamping block.

[0011] DE 20 2010 008 567 U1 (Applicant: Zumtobel Lighting GmbH; Filing Date: September 17, 2010) describes a mounting device for a spotlight designed for the installation into the erection opening of a ceiling or a wall. A mounting frame, which comprises means for a pivotable holding of a spotlight head, can be anchored in an erection opening by means of at least one latch device. The spotlight is mounted on the pivotable holder prior to the anchoring of the mounting frame. The latch device is a bendable spring element and is laterally, radially deformed by displacing an actuator element, an adjusting screw, and thus transferred from a mounting position into a latched position. However, said actuator element or said adjusting screw can be accessed only by pivoting the pre-mounted spotlight head. That means, only pivotable spotlights can be installed by means of said mounting device. Further, installation demands great skill, in particular for small spotlights, because an opening that is only partially covered by the spotlight remains for accessing the actuator element. Further, the spring element is directly fixed to the mounting frame. Thus, due to the orientation set to the spotlight fixed to the mounting frame, there is no flexibility with respect to the orientation of the spring element in the erection opening.

After all, the mounting device of DE 20 2010 008 567 U1 is a pipe open in various directions, which is why said mounting device does not provide any protection for sensitive lamp parts such as cable connections. With respect to the safety class system for electrical appliances, an electrical appliance connected in such a way may probably count to the lowest dust- and splash water protection category.

[0012] DE 10 2009 016 778 A1 (Applicant: ABB AG; Filing Date: April 7, 2009) describes a flush-mounted LED luminaire and requires a commercially available flush-mounted box. In paragraph [0029] of DE 2009 016 778 Al, installation of a socket of a device in an installation frame by means of expanding claws is described. Further, a luminaire cover is described that can be pressed onto and engaged with the installation frame as illustrated in figure 5 of DE 10 2009 016 778 Al. Thus, DE 10 2009 016 778 Al teaches the simplified installation of a flush-mounted luminaire but does not provide information on the functioning or the interaction of the installation frame and the expanding claws. Moreover, DE 2009 016 778 Al neither describes the configuration of the flush-mounted box nor does it provide information on how a flush-mounted box should be in order to per se be easily installable in a wall or a ceiling. As compared to DE 10 2009 016 778 Al, EP 2 315 327 A2 (Applicant: ABB AG, Priority Date: October 23, 2009) has a similar design. The expanding claws, adapted to be electrically insulating, are to be actuated by tightening an adjusting screw.

[0013] DE 197 55 996 Al (Applicant: Edwin Weindl; Filing Date: December 17, 1997) describes a mounting device for a ceiling lamp in an intermediate ceiling. A housing, opened downwards, is described as mounting device, which housing comprises at least two support arms opposite to one another. The spring-loaded support arms are pressed in a direction against the side walls of the housing during the installation and expand outwards after insertion of the housing in the erection opening. The expanding support arms hold the lamp on the intermediate ceiling during installation. An adjusting screw is used for fixing the lamp, which screw runs through the housing, perpendicularly into the intermediate ceiling. When tightening said screw, forces are generated perpendicular to the intermediate ceiling, by means of which the expanding support arms are pressed downward onto the intermediate ceiling. The support arms do not generate a vertical force which is why the mounting device, as a type of holding device, can only be used for the securing of a lamp in an intermediate ceiling, but said device is not suitable as a kind of tensioning device or clamping device for mounting a lamp on a non-suspended ceiling or wall.

[0014] DE 20 2008 008 977 U1 (Holder: Roland Pasedag; Filing Date: July 4, 2008) shows a visually appealing luminaire, which can be installed as a flush-mounted lamp. Various working techniques have been developed by many technicians for the installation thereof.

[0015] The descriptions discussed above are hereby incorporated into the following description of the invention by reference in order to not have to discuss the various types of clamps, central screws and rotating fixing devices in the context of the following description of the invention once again. The clamps, central screws, rotating fixing devices and clamping devices disclosed in the publications discussed above are deemed to be known and described for the present description of the invention by reference to said publications.

Object [0016] When installing electrical appliances, there is a desire to be able to finish the installation of the housing for electrics, e.g. for a recessed luminaire, as fast, as reliable and as flawless as possible, preferably by one single technician. Ideally, the mounting technique can be transferred also to existing lamp series that work with flush-mounted housings by only having to exchange a few components of a mounting set.

Description of the invention [0017] The object according to the invention is achieved by a housing for electrics according to claim 1, a recessed luminaire including a corresponding housing for electrics can be seen from claim 9, a suitable installation method can be seen from claim 11. Advantageous further developments are indicated in the dependent claims.

[0018] Housings for electrics, which also in the world of electricians are called boxes, device boxes, device connection boxes, double-device connection boxes, electronic boxes or cases, connection cases respectively, i.e. can due to their shape be called box-like, case-like or tub-like housings for electrics, advantageously offer a holding and clamping device connected to the box or to the case or tub for faster installation. Advantageously, the holding and clamping fixture is arranged such that the actual device, hidden from the eye of an observer, can ensure securing of the housing behind the accommodation body or that it can be inserted in said body. An installation in which at least part of the housing disappears in the body or behind the body is called a flush-mounted installation, wherein boxes inserted in non-plastered walls, e.g. in panel walls or walls covered with panels, so-called drywalls, are called flush-mounted boxes. In some embodiments, the entire box is inserted in the wall, in the body or behind the panel. The part to be inserted may have a tub-like form. Further electric or electronic components may be arranged in said tub. The tub has a bottom, i.e. a tub bottom, an essential part of which is a base plate.

[0019] The housing may be configured in various geometric shapes and it may have a circular, elliptic, quadratic or rectangular cross-section or a combination thereof when viewed in top view. From a three-dimensional point of view, the housing may be less deep or even deeper than the cross-section, i.e. it may be configured as a tub-like housing or a tub-like case or as a hollow cylinder from a three-dimensional point of view. Here, the housing may be tapering or pointed in or toward the deep, so that the cross-section viewed from the top, i.e. the cross-section viewed from a side, is greater than the cross-section of the housing viewed from below, i.e. the cross-section viewed from the other side.

[0020] A clamping device is part of the rear portion of the box. The clamping device extends from a surface of the housing for electrics at least sectionally in order to be able to produce a positive or nonpositive connection or arrangement to the wall, the body or the panel. The clamping device comprises multiple components. One component of the clamping device may be a clamp. Advantageously, there are multiple clamps to collectively form the clamping device. The clamp is guided by means of an actuator disc.

[0021] Adjustment of the actuator disc can be effected by means of a central screw. The central screw holds or engages through the housing, in particular in the tub-like, rear portion, i.e. on the rear-sided wall of the housing. As a screw, the central screw offers a rotational movement. The central screw is rotationally moveable. The actuator disc can be turned about at least several angular degrees by means of a rotational movement. The rotation can be effected parallel to the wall or to the rear, tub-like portion. The actuator disc is rotatably supported on the screw. After completing the first turn, a further rotation of the actuator disc is prevented. After travelling a first rotational path, the actuator disc is secured. After that, a height adjustment, i.e. a parallel displacement of the actuator disc in direction to or away from the wall, more precisely the rear-sided wall or the tub-like portion, can be effected by means of the central screw. By use of the central screw, the actuator disc is mounted such that said actuator disc offers two degrees of movement freedom, which however can preferably be taken one after another. The actuator disc is mounted parallel to the rear-sided wall of the housing for electrics in a height-adjustable manner. The actuator disc can be guided by means of a central screw.

[0022] The central screw comprises a screw head. The head of the screw can be touched or engaged from the inside of the housing for electrics. The screw head projects into the interior of the housing. The central screw can be turned by means of a screwing tool adapted to the screw head, e.g. a screw driver or a hexagon wrench. The rotation of the central screw is transferred to the actuator disc. The central screw is mounted with one portion, i.e. sectionally, in the rear wall of the housing for electrics and with another portion in the actuator disc. The actuator disc comprises a thread. By means of the thread, the actuator disc may be arranged closer to or more far away from the rear-sided wall of the housing. The actuator disc is rotatable in an angular degree range preferably less than 360°, even less than 90°, e.g. only 5°.

[0023] In another embodiment, the path until reaching a stop is set to an angular degree of 120° of a rotational movement of the actuator disc. The value of said angular degree is influenced by the preference of either a short or a long running path and may be set to nearly any value by means of the position of the stop on the actuator disc as compared to the position of the clamp.

[0024] The actuator disc as part of the clamping device is a component adapted to communicate between the central screw and the clamp. The actuator disc can be rotatably moved by means of the central screw to be moved from the inside of the housing for electrics via a screw head all the way until the clamp(s) can no longer be carried along. In an end portion, the respective clamp is fixed to the actuator disc by means of a rotation link. By means of the rotation link, the rotational movement of the central screw can be transferred into a tensioning movement of the clamp guided radially on a thorn. The clamping device comprises a thorn. The thorn is used for guiding the clamp. The clamp follows the specification of the rotational link. Part of the clamping device is at least one stop. Said stop prevents turning further the actuator disc. The rotational movement of the clamp moving along is permitted by the stop up to a certain point.

[0025] The different movement procedures when installing a box with a holding and clamping device are provided by means of the degrees of movement freedom of the individual components of the holding and clamping device. The box can nearly intuitively be inserted properly. All clamps present, e.g. two, three, four or five clamps, can be adjusted, moved or displaced into their respective end positions by means of only one process.

[0026] The housing for electrics described above can be part of a recessed luminaire. A recessed luminaire of such type has a tub-like recessed body. Further, said luminaire includes a luminaire insert. The two parts, tub-like recessed body and luminaire insert can be attached to one another. To that end, the parts have a closing connection by means of which the parts belong together. The parts, tub-like insert body and luminaire insert, hold one another. The closing connection can be connected such that the parts are held together; the closing connection is displaceable. The tub-like part, the tub-like insert body has a clamping device on the rear-sided region thereof. The clamping device can be operated by means of an actuation screw.

[0027] In one embodiment, the central screw takes the role of an actuation screw. The clamping device can be adjusted and set by means of the actuation screw. The clamping device is moved by means of the actuation screw. The actuation screw moveably engages the actuator disc via a thread fit. In one embodiment, the clamping device includes at least one clamp. The uniform load of the clamping device can be improved by providing at least three clamps. The individual clamps can be connected to the actuator disc. The clamps can displace themselves or can be displaced within a certain movement range. The degree of freedom for the clamp (or for the clamps) is limited by a stop. In one embodiment, the stop is configured in two parts. One part of the stop can be found on the clamp. One part of the stop is worked into the actuator disc. The parts of the stop engage one another. In such a case, the parts of the stop are to be connected in a form-fit manner. By means of a stop, in particular a rotational movement of the actuator disc can be limited such that the respective clamp is carried along starting from a rotation point. If a stop is provided, in one embodiment the region in which the actuator disc is running freely can be limited by means of the stop. Basically, the actuator disc is rotatably supported.

[0028] It is advantageous if at least one clamp comprises a hole, e.g. an elongated hole, for the guidance of said clamp. When the actuator disc is moved radially, there is to be an option to move the clamp away from the actuator disc. Thus, the clamp has an elongated, at least one-sided guidance area. Such a guidance area can be realized by an interaction of the hole and a guide element. A thorn, for example, may be used as a guide element. The thorn is located fixed in position on a component, e.g. the rear wall of the housing for electrics. Thus, the thorn may be considered to be fixed in terms of movement preferably at least with respect to the actuator disc. The thorn of the recessed body comprises a sliding surface for displacing the clamp. The clamp may slide past the thorn, in particular in direction of a tub bottom, e.g. in direction of a base plate of the housing for electrics. The thorn is part of the recessed body and provided for the motion sequence. Moreover, the thorn may serve as a stop when installing the housing for electrics in a wall and predefine the maximum installation depth.

[0029] By means of the embodiment explained above, a very simple installation method can be realized when installing electric boxes and housings for electrics in the form of flush-mounted equipment. The housing for electrics can be part of a recessed luminaire, in particular as discussed above. The recessed luminaire comprises a luminaire element, a recessed body and a clamping device. It is advantageous if the housing for electrics, i.e. at least the electric box, can be installed by a one-handed rotary motion of said housing or box. If the rotational movement is limited with respect to angular degrees, the technician may possibly not have to change the grip. Thus, it is advantageous if the rotational movement is less than 180°, preferably less than 90°, until the actuation screw has guided the actuator disc to a contact with a rotational limit.

[0030] The clamping device clamps the housing for electrics into the body accommodating said housing for electrics, e.g. a wall with a cavity. Preferably, this is effected by means of a pivoting movement of at least one clamp element. The clamp device is displaced into a holding position by means of the pivoting movement. The clamping device is tensioned. After that, further rotational movements are possible. The actuator disc is moved toward the housing for electrics, more precisely toward the tub bottom, by means of such, in particular further rotational movements, which can be initiated on a head of the actuation screw. The clamp with its clamp elements can be compared to a frame when viewed from the side. The clamp elements clamp an intermediate area. The intermediate area is included by the clamp elements. The intermediate area is reduced if the actuator disc is pulled up by means of the central screw. Then, part of the clamp elements travels laterally past the round-like edge of the housing for electrics. Clamp elements of the clamping device with the intermediate area clamped therebetween can be pulled in. If the housing for electrics is properly fixed in position, the luminaire element can be completed. The luminaire element can for example be completed in that a cover is manually attachable to the recessed element, to the housing for a rear of luminaires, in particular by forming an electric connection. In one embodiment, the housing for electrics comprises rotation or latch protrusions, which laterally engage the cover in order to hold the cover. Preferably, the head of the actuation screw is arranged on the side of the recessed body facing the luminaire element. The central screw, which works as an actuation screw, extends through a hole of the recessed body. A thread follows. The thread is located on the other side of the recessed body, i.e. beyond the hole. A clamping device is arranged on the other side of the recessed body. In one embodiment, the central screw engages the thread such that a tightening of the clamping devices can be achieved by carrying along the thread from a rotatable position into a stop position.

[0031] It can also be noted that multiple clamps facing in different directions are in each case mounted on an end portion rotatably moveable on an actuator disc. The mounting between actuator disc and the respective end portion is effected by a punctual latch connection. The actuator disc is height-adjustable. Height adjustment is effected by maintaining the horizontal position of the actuator disc. Furthermore, the clamps are guided by a thorn. The clamps comprise a through opening which is longer than the respective thorn and thus can be called an elongated hole. One half of the clamps that is not provided for clamping keeps an essentially parallel orientation relative to the flat extension of the actuator disc during height-adjustment of the actuator disc.

[0032] In the following, advantageous embodiments and further developments are explained, which per se or in a combination thereof can disclose aspects of the invention.

[0033] At least one clamp is to be guided by the thorn in a height-adjustable manner in order to ensure a most compact realization of the guidance of the clamp. The exact position of the clamp relative to the thorn is set by a screw-in depth of the central screw. The central screw has influence on the position of the clamp. Control by means of the central screw can be realized in different ways. In one embodiment, the central screw is guided such that the screw shaft is screwed out from the inside to the outside of the housing for electrics via rotational movements. In this case, the further the central screw is screwed into the housing for electrics, in other words, the less can be seen of the screw shaft in the inside of the housing for electrics, the more far away is located the actuator disc from the housing for electrics. In another embodiment, the screw head can be located with the bottom side thereof in permanent direct contact on the inner side of the housing for electrics; the screw head permanently rests against the inner side. In this case, the actuator disc follows the screw rotations and is drawn to the wall of the housing for electrics by continued screw rotations of the screw. By means of the first embodiment, the technician can anticipate the position of the clamps relative to the housing for electrics by means of the screw-in depth. In a second embodiment, only the screw head extends into the interior of the housing for electrics. Whether the screw shaft can travel into the interior of the housing for electrics by rotational movements or not can be determined in that a thread is worked into the base plate or in that a thread is worked only into the actuator disc. In one embodiment, either only the base plate or only the actuator disc has a mating thread for the thread of the central screw. In another embodiment, both the base plate and the actuator disc have a thread through which the central screw is screwed.

[0034] It is material-saving, if a thorn for guiding the clamp is fixed to the housing for electrics in a plate-like manner. The thorn can be divided into individual portions. The thorn extends from the housing for electrics in a transverse manner. The thorn continues the housing for electrics. The thorn runs in the same direction as the lateral wall of the housing for electrics. One of the portions of the thorn is a first, plate-like portion. A second portion is located adjacent to said first portion. The second portion can be compared to a round body. A portion in the type of a round body is adjacent to the first portion. It is advantageous if an elongated hole is present in at least one clamp. The dimensions of the elongated hole, in particular the length, should be adjusted to a widest point of the thorn. A thorn configured that way offers sufficient movement freedom at the beginning of the rotational movement and subsequently guides the actuator disc and/or the clamp(s) to the tub-like bottom of the housing for electrics at a most small clearance.

[0035] The connection between the actuator disc and the clamp is configured to be moveable. By means of the clamping device, more precisely by means of holding and clamping fixture adjacent to the housing, said housing for electrics offers a rotatable connection, i.e. a rotational link between clamp and actuator disc so that the clamps can extend in different angles from the actuator disc depending on the position of the actuator disc. By means of a separated expanding pin, a rotational link of such type can be realized in a form-fit or in a force-fit manner. In a first position, the clamps can be pulled in behind the housing for electrics. The rotational link allows that the clamp(s) is/are pressed forward behind the housing for electrics, in particular in cases in which the central screw is tightened beyond a certain point.

[0036] In an advantageous embodiment, the holding and clamping fixture, which is adjacent to the housing for electrics, comprises multiple individual clamping devices. Like the thorn, the clamp can be divided into individual portions. A first portion of the clamp is located directly next to the actuator disc. A second portion adjacent thereto in an angled manner essentially follows the shape of the outer dimensions of the housing for electrics. In the first portion, in particular in the portion neighboring the actuator disc, the clamp runs as in an extended manner in the same direction relative to an orientation of the actuator disc. In the second portion, the clamp runs angled-off. For example, the clamp may comprise a right angle between the first and the second portion thererof. The individual portions can be arranged to one another in particular at a right angle. The second portion leads to a third portion. The orientation of the third portion approximates the orientation of the first portion. The third portion leads to a bend clamping portion. The third portion follows the second portion in a bend-off manner. The clamp ends in the third portion.

[0037] In an advantageous manner, the stop can be configured as an extension and thus as a part of the actuator disc. Stop and actuator disc can be formed in one piece by injection molding, for example. Furthermore, it is advantageous if the stop is arranged on the side of the actuator disc, which is the face side of the surface of the tub-like core housing. The housing for electrics is called core housing due to the fact that the clamping devices are adjacent to the core housing. The stop can face the recessed body of the housing for electrics. Furthermore, the stop may be formed of a first part on the actuator disc and a second part on a clamping device. Thus, the forces are advantageously split off. A higher mechanical strength can be realized.

[0038] Installation is further simplified if at least one cable opening is worked into the base plate of the housing for electrics. The base plate is part of the core housing, i.e. of the actual housing for electrics. During the transport, a cover of the cable opening may be part of the base plate, which can be broken out of or separated from the base plate in the form of a cover plate, e.g. because the cover plate may be worked into in a perforated manner. After that, the cover plate can be attached on the inner side of the housing for electrics and cover the cable for strain relief of the cable introduced through the cable opening. In an original state of the housing for electrics, the cable opening is closed by the cover plate, which can be removed therefrom and attached to the core housing involving little effort and little force.

[0039] The length of the screw shaft of the central screw should advantageously be adapted to the height of the thorn. Both components, central screw and thorn, should correspond to one another within a range of a few millimeters only with respect to their length. In such case, the number of rotations or revolutions (in consideration of the thread) of the central screw corresponds to the sliding path on the thorn. The two components, central screw and thorn, can in particular be adjusted such that an end of the thorn laterally represents a hindering for the movement for the actuator disc. The starts and ends of the individual portions of the thorn determine the movement path of the clamps.

[0040] The housing for electrics discussed above can accommodate electric and electrical components, e.g. united on a printed circuit board for luminaire electronics. The housing for electrics is part of a recessed luminaire, if luminaire bodies are integrated in the cover. Other use of the housing for electrics is possible, e.g. as a housing for a smoke sensor, a building surveillance or for accommodating a video camera.

[0041] Amongst others, the possible displacement distance for the (individual) clamp is determined by the size of the elongated hole, in particular in relation to the size of the thorn, more precisely to the round body of the thorn. The possible angular degree and thus the extension relation of the clamps are determined by the rotational distance until touching the stop. The position of the rotational link between actuator disc and clamp, in particular the first portion of the clamp, determines the maximum extendable distance of the clamp and thus the maximum diameter of the hole in the body into which the housing for electrics is to be installed. The installation depth possible with respect to the housing for electrics results from or corresponds to the length of the central screw. The installation depth possible with respect to the housing for electrics results from or corresponds to the height of the thorn.

[0042] The housing for electrics discussed above allows a very precise, exactly dosed adjustment of the clamping fixture. All clamps can be moved uniformly and simultaneously. The risk of installing an electric box in a slanted manner, which often occurs when electricians are pressed for time, is reduced.

[0043] Another advantage is provided in that the clamps do not have to be compressed that much for a precise clamping. Mainly the angled-off portion of the clamp can be pressed in in a spring-like manner over the predetermined or recognized angle of the bent, i.e. in direction of the central screw. A repeated installation and removal of the housing of the box for electrics is possible. The plastic deformation range of the material of the clamp does not have to be used for a securing. The clamping is effected in the region of the elastic deformation of the material of the clamp.

[0044] The combinations and exemplary embodiments described above can also be considered in various other connections and combinations.

Brief description of the drawings [0045] The present invention can even better be understood if reference is made to the attached drawings, illustrating particularly advantageous embodiments without limiting the present invention thereto, wherein

Fig. 1 shows a perspective view of a part of the housing for electrics, the actual core housing with the holding and clamping fixture,

Fig. 2 shows a sectional drawing through a housing for electrics of Fig. 1,

Fig. 3 shows another embodiment of the actual core housing with the holding and clamping fixture, Fig. 4 shows an embodiment of the cover in an inclined top view,

Fig. 5 shows the cover of Fig. 4 in an inclined view from below, and Fig. 6 shows another embodiment of a cover, similar to the cover of Fig. 4.

Description of the Figures [0046] The embodiments shown in the individual drawings can also be combined in any manner.

[0047] Fig. 1 shows a housing for electrics 3 which can also be used as a recessed luminaire 1 due to the cover 99 of said housing. The housing for electrics 3 has a recessed body 5 which is essentially formed by the core housing 7. The core housing 7 comprises a base plate 13 and clamping devices such as the clamping device 17 with a first clamp 19 or a second clamp 21 or a third clamp 23 projecting from said plate. The transition of the base plate 13 to the side part of the core housing 7 is almost right-angled, i.e. has an angle between 80° and 100°.

[0048] There is an actuator disc 41 on the outer side of the housing for electrics 3. The actuator disc 41 is disposed parallel to the base plate 13, in a top view of the base plate 13, above the base plate 13. The cross-sections of the actuator disc 41 and of the base plate 13 are almost circular when viewed in a top view. Here, the diameter of the actuator disc 41 is significantly smaller than the diameter of the base plate 13, in particular less than half the size compared to the diameter of the base plate 13. The actuator disc 41 is arranged centrally to the base plate 13, i.e. the distance from the outer edge of the actuator disc 41 to the outer edge of the base plate 13 is equal on all sides. The distance from the outer edge of the actuator disc 41 to the outer edge of the base plate 13 is in particular at least the size of the diameter of the actuator disc 41. The actuator disc 41 comprises a circular, central recess having a diameter adapted to screw shaft 59 of a central screw 55 and a thread fit adapted to the thread of the central screw 55. Further, the actuator disc 41 further comprises three de-centrally arranged recesses, wherein the decentral recesses are located in the outer third of the radius of the actuator disc 41. That means the distance of the outer edge of the de-central recesses to the centre of the actuator disc 41 is in each case at least two thirds of the radius of the actuator disc 41. The three de-central recesses of the actuator disc 41 are uniformly arranged over the periphery of the actuator disc 41, i.e. distributed at the same angle to one another. The base plate 13 comprises a circular, central recess with a diameter and thread adapted to the screw shaft 59 of the central screw 55. The central screw 55 engages through the central recess of the base plate 13 as well as the central recess of the actuator disc 41. Here, the central screw 55 is arranged right-angled to the base plate 13 and the actuator disc 41. The screw head 57 (see Fig. 2) points to the interior 53 of the core housing 7 and touches the inner side of the housing bottom or of the tub bottom 11 when completely screwed in.

[0049] When rotating the central screw 55, the actuator disc 41 follows said rotational movement. If the rotational movement of the actuator disc 41 is prevented, the actuator disc 41 moves parallel to the screw axis, guided by the thread fit, away from the base plate 13. The state in which the actuator disc 41 is capable of performing a rotational movement is called rest position of the actuator disc 41 in the following. The following explanations are based on the actuator disc 41 in said rest position.

[0050] Clamps 19, 21 and 23 are arranged between the base plate 13 and the actuator disc 41. Clamps 19, 21 and 23 are elongate and flat, they have a first and a second end 25' and 25". And they have an upper side and a bottom side. Flat means that the clamps 19, 21 and 23 are longer than wide and that their thickness is less than their length and their width. The width of the clamps 19, 21 and 23 is less than the radius of the actuator disc 41 but wider than the diameter of the de-central recesses of the actuator disc 41. The first end of the clamps 19, 21 and 23 is located between the base plate 13 and the actuator disc 41. The second ends 25’, 25" of the clamps 21, 23 are provided self-supporting and freely moveable in space. Such an end 25’, 25" has a rounded shape. Between the two ends of the clamps 19, 21 and 23 there is a kink, which according to the transition between the base plate 13 and the side parts of the core housing 7 is almost right-angled, i.e. having an angle from 80° to 100°. If the first ends of the clamps 19, 21 and 23 are located between the base plate 13 and the actuator disc 41, the kink is located at the height of the transition between base plate 13 and side parts of the core housing 7. The portions of the clamps 19, 21 and 23 adjacent to the kink in direction of the ends 25’, 25" of the clamps 19, 21 and 23 are in each case disposed parallel to the base plate 13 or the side parts of the core housing 7. In the following, the portion running parallel to the base plate 13 is called first portion, the portion running parallel to a side part of the core housing 7 is called second portion. A third portion is located adjacent to the second portion and attaches itself to said second portion in direction of the second ends 25', 25". Said third portion bends upwards, i.e. the orientation thereof approximates the orientation of the first portion. As a result, the second ends 25', 25" point away from the side part of the core housing 7 at an angle of more than 5°.

[0051] Expanding pins 85, 87 are attached to the first ends of the clamps 19, 21, 23 in direction of the side facing the actuator disc 41, which is called top side in the following (see Fig. 2). The expanding pins 85, 87 are connected to the clamps 19, 21 and 23 in a fixed manner, preferably manufactured by injection molding in one injection process together with the clamps 19, 21 and 23. The expanding pins are in each case centrally attached, i.e. having equal distances between the two longitudinal sides of the clamps 19, 21 and 23.

[0052] Expanding pins 85, 87 have a narrow section that can also be called a collar, which in each case rests on the clamps 19, 21 and 23 at a right angle, and a head which is wider compared to the collar, which rests on the collar on the side facing away from the clamps 19, 21 and 23 and which is rounded off on the side facing away from the clamps 19, 21 and 23. The head rests centrally on the collar, i.e. the centre of the rounded-off head is located on the extension of the axis of the collar running perpendicularly to the clamp 19, 21 or 23. The head is centrally separated, i.e. the head comprises a slit opened upwards, which runs through the centre of the head and which runs at least up to the transition area between the head and the collar. The width of the slit is variable. If pressure is not exerted onto the head of the expanding pin, the width of the slit is preferably 1 mm to 3 mm. If pressure is exerted onto the head of the expanding pin 85, 87, the width of the slit is preferably less than 1 mm. The diameter of the head of the expanding pin on the widest point thereof without applying a force to the expanding pin is somewhat greater than the diameter of the de-central recesses of the actuator disc 41. If a vertical force is exerted onto the expanding pin, vertically toward the axis running perpendicularly to the clamp 19, 21 or 23, the slit in the head of the expanding pin narrows and the diameter of the head on the widest point thereof is slightly less than the diameter of the de-central recesses of the actuator disc 41. The diameter of the collar of the expanding pin 85, 87 is not changed when the head is applied with force and is slightly less than the diameter of the de-central recesses of the actuator disc 41 with or without vertical application of force. The words "slightly less" refer to a difference of in each case a few millimeters, in particular in a range between 1 mm and 5 mm. If the head of the expanding pin 85, 87 is pressed through one of the de-central recesses of the actuator disc 41, a rotational link 43 between the actuator disc 41 and the (respective) clamps 19, 21, 23 is produced. The diameters of the expanding pins 85, 87 on the narrowest point thereof are not less than half the width of the respective clamp 19, 21 or 23, which is why also the de-central recesses of the actuator disc 41 are not smaller than said diameter.

[0053] The expanding pin 85, 87 of the (respective) clamp 19, 21 and 23 extends as a rotational link 43 in each case through one of the three de-central recesses of the actuator disc 41. The expanding pin 85 connects the in each case first end of the clamp 19, 21 and 23 to the actuator disc 41 such that a rotational or pivoting movement 65, i.e. a radial movement, of the clamp 19, 21, 23 via the expanding pin 85, 87 relative to the actuator disc 41 is possible, however that a movement away from the actuator disc 41 parallel to the screw axis is not possible. The expanding pin 85, 87 is arranged on the upper side of the clamp 19, 21, 23 such that when connecting the clamps 19, 21 and 23 to the actuator disc 41 via the rotational links 43, the first ends of the clamps 19, 21 and 23 do not extend beyond the centre of the actuator disc 41, preferably they are located within the outer third of the perimeter of the actuator disc 41. The distance of the respective expanding pin 85, 87 to the first end of the respective clamp 19, 21 or 23 is less than the distance of the respective expanding pin 85, 87 to the respective kink of the clamp 19, 21 or 23, in each case measured from the centre of the expanding pin 85, 87.

[0054] If the actuator disc 41 performs a rotational movement, the clamps 19,21 and 23 are follow said movement due to the rotational links 43 of said rotational movement, as long as there is no obstacle that prevents the rotational movement of the clamps 19, 21 and 23. In this state, which is also called the rest position of the clamps 19, 21 and 23, the clamps 19, 21 and 23 are uniformly spaced, i.e. arranged at the same angle to one another. In the case that the clamps 19, 21 or 23 encounter an obstacle during said rotational movement, they will perform the pivoting movement 65 arranged for by the rotational links 43 if the rotational movement of the actuator disc 41 is further continued. The clamps 19, 21 and 23 remain connected to the actuator disc 41 via the rotational links 43 even if the actuator disc is no longer in the rest position. Thus, due to the rotational links 43, the clamps 19, 21 and 23 are capable of following the actuator disc 41 even if the actuator disc 41 is moved along the axis of the central screw 55.

[0055] Three thorns 69 are attached to the outer side of the base plate 13. One thorn 69 has two parts and consists of a plate 71 and a round body 73. The round body 73 can be described as an elongate pin having a round diameter. The plate 71 can be described as an elongate pin having an oval or almost oval diameter. Almost oval diameter means that the plate is flattened on the narrow side of its oval diameter. Plate 71 and round body 73 are connected to one another, in particular bonded or manufactured by injection molding. The thorn 69 is attached to the base plate 13 at a right angle. Here, the plate 71 faces the round body of the actuator disc 41, facing away from the actuator disc 41. The thorns 69 are fixedly connected with one side to the outer side of the base plate 13, for example welded, bonded or produced by injection molding as an injection molded part. Preferably, the length of the thorn 69 corresponds to the length of the screw shaft 59 extending through the opening of the housing bottom when the screw 55 is screwed completely in. The cross-sections of the thorns 69 at the widest point thereof are not greater than the distance of the outer edge of the actuator disc 41 to the outer edge of the base plate 13.

[0056] The clamp 19, 21, 23 comprises a recess to be called a recess, an oval recess or also an elongate hole 35, 37 between expanding pin 85, 87 and kink. The thorns 69 in each case extend through the elongate holes 35, 37, with the longitudinal orientation of the cross-sections of the thorns 69 in each case corresponding to the longitudinal orientation of the elongate holes 35 or 37. The length of the elongate holes 35, 37 is not greater than the distance between expanding pin 85, 87 and kink, preferably less than the distance between expanding pin and kink. Here, the width of the elongate hole 35, 37 is not wider, preferably narrower, than the width of the respective clamp 19, 21 or 23. The cross-sections of the thorns 69 at the widest point thereof are not greater than the length of the elongate holes 35 or 37. The edges of the longitudinal sides of the elongate holes 35, 37 are arranged parallel to the longitudinal sides of the respective clamps 19, 21 or 23. If the clamps 19, 21 or 23 are connected to the actuator disc 41 via the rotational link 43, the edge of the narrow side of the elongate holes 35, 37 which is closest to the first end of the clamp 19, 21, 23 is preferably at the same height, i.e. below the outer edge of the actuator disc 41. The curvature of the narrow sides of the elongate holes 35, 37 corresponds to the curvature of the round body 73. The curvature of the narrow side of the plates 71 also corresponds to the curvature of the narrow sides of the elongate holes 35, 37. The distance between the two longitudinal sides or flattened sides of the plates 71 in each case corresponds to the distance of the longitudinal sides of the elongate holes 35, 37.

[0057] When the central screw 55 is rotationally moved, first the actuator disc 41, in the rest position, connected to the central screw 55 via a thread fit 61 in the actuator disc 41, performs a rotation movement 63. The clamps 19, 21 and 23 connected to the actuator disc 41 via the expanding pins 85, 87 in the form of a rotational link 43 follow said rotation movement as long as there is no obstacle that stops the rotation movement 63 of the clamps 19, 21 and 23. When performing the rotation movement 63, the expanding pins 85, 87 approach in each case one of the thorns 69. The thorns 69 are located at the inner curvature of the elongate holes 35, 37, i.e. the curvature facing the actuator disc 41. Here, the round body 73 touches the inner curvature of the elongate holes 35, 37. If there is an obstacle that stops the rotation movement 63 of the clamps 19, 21 or 23, the clamps 19, 21 or 23 perform the pivoting movement 65, wherein the angle between the clamps 19, 21 or 23 is changed and the thorns 69 are guided in the elongate holes 35, 37. The clamps 19, 21, 23 are moved away from the expanding pins 85, 87 in direction of the kink of the clamps 19, 21 or 23. When the thorns 69 encounter the outer end of the elongate holes 35, 37, i.e. the end facing the kink, the rotation movement 63 of the actuator disc 41 connected to the clamps 19, 21 and 23 via the rotational links 43 is prevented, so that the actuator disc 41 abandons the rest position. The actuator disc 41 travels, arranged for by the thread fit 61 for the screw thread, parallel to the screw axis away from the base plate 13. At the same time, arranged by the rotational links 43, the clamps 19, 21 and 23 are moved away from the base plate 13 as well. If the second ends 25', 25" of the clamps 19, 21 or 23 adhere to the ground, the angle at the kink of the clamps 19, 21 or 23 is changed by a tensioning movement 67 of the second portions 89 of the clamps 19, 21, 23. A clamping force toward the ground develops. Here, the angles of the third portions of the clamps 19, 21, 23 adapt themselves to the ground.

[0058] The housing for electrics 3 has two oval, perforated sections which are also called cover plates 93, 93’ in the bottom or tub bottom 13 of said housing in the outer third of the base plate 13. Said cover plates 93, 93' can be described as slits running in an oval, forming a double spiral, the ends of which are not connected to one another. This way, cover plates 93, 93' are generated that have oval running slits and bars arranged therebetween. The distance between the slits is arranged such that the bars formed therebetween are narrower or at least as narrow as the slits, so that when a vertical force is applied to said bars by means of pressure, said bars break and release an oval opening for a cable guidance, i.e. more precisely a cable opening 91, 9 T. Additionally, on both sides of the oval, preferably centrally, i.e. in the centre of a circle described on the edges of an oval, can be two circular recesses, the diameter of which is less than the diameter of the smallest spiral diameter. Said circular openings can additionally support the breaking of the cover plates. The cover plates 93, 93' are attached in an angular-shaped section between two clamps 19, 21 or 23 in the base plate 13.

[0059] The box-like housing for electrics 3 comprises an additional stop 81. The stop 81 is to stop the rotational movement of the actuator disc 41 and thus stop a rotational movement of the clamps 19, 21, and 23 following the actuator disc 41. The stop 81 is formed as an extension of the actuator disc 41. The stop 81 is arranged on the side of the actuator disc 41 facing the base plate 13. The length of the extension corresponds to the distance of the actuator disc 41 from the base plate 13 in the rest position, so that during a rotational movement of the actuator disc 41, the extension touches the base plate 13. An elevation is formed in the base plate 13 on the surface facing the actuator disc 41, which elevation is hit by the extension or stop 81 in a rotational movement of the actuator disc 41. Said elevation is not higher than the distance between the actuator disc 41 and the base plate 13.

[0060] Upon reaching the stop 81, the rotational movement of the actuator disc 41 is stopped. Now, the actuator disc 41 moves along the screw axis by means of the thread of the central recess of the actuator disc 41, which thread mates the screw thread. Then, the thorns 69 move inside the elongated holes of the clamps 19, 21 and 23 away from the expanding pins, in direction of the kink of the clamps 19, 21 and 23. If the outer end of the elongated holes 35, 37 is reached, the clamps 19, 21 and 23 are moved away from the outer side of the base plate 13 together with the actuator disc 41. The tensioning movement 67 is performed, the clamping force to the ground is generated.

[0061] Viewed from the rotational direction of the actuator disc 41, the elevation of the base plate 13 is attached in front olTbefore the section in the base plate 13, in which the cover plates 93, 93' are located, so that the stop 81 stops a rotational movement of the actuator disc 41 and thus of the clamps 19, 21, 23 before the cover plates 93, 93' are covered by the rotational movement of the clamps 19, 21 or 23.

[0062] On the one hand, the housing for electrics 3 is attached to a supporting ground with the central screw 55 by means of forces acting perpendicularly to the ground as a result of the rotation movement of the central screw 55. At the same time, or on the other hand, the housing for electrics 3 is tensioned or clamped by the clamps 19, 21 or 23, in this case by means of vertically acting forces of the clamping device 17, i.e. secured against forces that act vertically and radially. This way, securing the housing for electrics 3 is achieved by a one-handed rotation movement. After breaking of the cover plates 93, 93', the cables (not shown) can be guided through the cable openings 91, 9Γ. A luminaire body 197 (see Fig. 5) may be attached.

[0063] After installation, the luminaire body 197 (see Fig. 5) is attached to the housing for electrics 3 as a type of end cover 99 for example by means of a thread or a clamping connection. Both the luminaire body 197 and the outer edge of the side parts of the core housing 7, which edge faces away from the base plate 13, comprise mating threads, rotation and latch protrusions.

[0064] With respect to Fig. 1, the box-like housing for electrics can also be described as a combination of a functional and a three-dimensional, mechanical description as follows.

[0065] Fig. 1 shows a housing for electrics 3 which can be used as a recessed luminaire 1 due to its end cover 99. The housing for electrics 3 has a recessed body 5, which is essentially formed by the core housing 7. The core housing 7 comprises a base plate 13 and clamping devices 17 having the first clamp 19, the second clamp 19 and the third clamp 21 extend from said plate. The clamps 19, 21, 23 are guided on individual thorns, such as for example the thorn 69. The thorn 69 offers a guidance area 31. Further guidance areas 27, 29 are arranged on the further arranged guide elements. A clamp, such as the clamp 23, ends into an end portion 25". The clamp 21 has an end portion 25' of the same type. The clamps 19, 21, 23 are formed like the tub-like core housing 7. The core housing 7 is box-like due to its tub bottom 11. The clamps 19, 21, 23 laterally extend beyond the core housing 7 and can secure the entire recessed luminaire 1 by means of their end portions 25', 25". The clamps 19, 21, 23 are hinged to an actuator disk 41 via individual rotational links 43. The respective clamp 19, 21, 23 is permitted a rotation movement in an angular degree by means of the rotational links 43. The rotation due to the rotational links 43 of the individual clamps, such as the clamps 19, 21, 23, is limited by a stop 81. Between individual clamps 21, 23, there is a pre-punched region in which cover plates 93, 93’ can be broken out of the base plate 13 at a reduced force, i.e. by means of a force application of a few Newton only, in order to release cable openings 91, 9 T. The movement range for the clamps 21, 23 is limited by the stop 81 such that the portions of the clamps 21, 23 arranged parallel to the tub bottom 11 cannot extend across the cable openings 91, 9Γ. Basically, a pivoting movement 65 is possible for each individual clamp 19, 21, 23, wherein the pivoting movement 65 is possible only over several angular degrees, e.g. in a range of 45°. Thus, the holding and clamping fixture 15 comprises multiple components. The central screw 55 guides the actuator disc 41 via the screw shaft 59 of said screw in a displacement motion perpendicular to the tub bottom 11, more precisely to the base plate 13. As long as a hit of the clamps 19, 21, 23 on a stop, such as the stop 81, is not occurred, a pivoting movement 65, which is effected around a rotational link 43, can take place. By means of the pivoting movement 65, a tensioning movement 67 with the clamps 19, 21, 23 is realized at the same time. When the tensioning movement 67 of the individual clamping elements 39 approaches the end of its movement, the clamps 19, 21, 23 follow the height adjustment by means of the screw shaft 59 of the central screw 55 which works as an actuation screw to that end. Elongate holes 35, 37 are worked into the clamping elements 39. Via the elongate holes 35, 37, the plate 71 merges to the round body 73. Plate 71 and round body 73 together form the thorn 69. The front end of the thorn 69 only offers the round body 73 for supporting the pivoting movement 65. The plate 71 begins only offset to the end of the round body 73. In the region of the thorn 69 which is directly adjacent to the base plate 13, the thorn 69 has the greatest width. The width of thorn 69 is gained at the bottom thereof, i.e. directly neighboring the base plate 13, by the two parts of the thorn 69 that have been attached to one another, the plate 71 and the round body 73. The holding and clamping fixture 15 offers guidance area 27, 29, 31 for the rotational fixing of the clamps 19, 21, 23 and the actuator disc 41 by means of the interaction of the elongated hole 35, 37 and the surface of the respective thorn 69. By means of said rotational fixing, the holding and clamping fixture 15 receives a counter bearing for the screw movements of the screw shaft 59 of the central screw 55. Once a rotation is no longer possible at the supporting point of the rotational link 43 either by means of the stop 81 or by means of the interaction of the thorns 69 and the clamping elements 17, the actuator disc 41 can be pulled to the base plate 13 of the core housing 7. Depending on the surface design of the accommodation recess for the housing for electrics 3, the end portions 25', 25" may search for a resilient attachment. Here, a compression or deformation in the region of the elongate holes 35, 37 of the clamps 21, 23 is almost not present. The tensioning movement 67 ensures a resilient clamping of the end portions 25', 25". If cables are to be introduced into the recessed luminaire 1 from the rear side, the cover plates 93, 93' can be broken out on the points of the cable opening 91, 91" that are provided to that end. The cover plates 93, 93' have such forms that they can be screwed onto the inner side of the core housing 7 as strain relief plates after the cover plates 93, 93' have been broken out of the cable openings 91, 9T. To that end, screw threads are provided in the cover plates 93, 93' and in the base plate 13 of the core housing 7. By means of the end cover 99, the housing for a rear of luminaires 9 becomes a complete recessed luminaire 1. In the variant of the screw thread between the screw shaft 59 and the actuator disc 41 presented in Fig. 1, the central screw 55 in the inserted state remains in a parallel orientation to the round bodies 73 at a constant screw-in depth. The round bodies 73 are grouped around the central screw 55, they are located on a greater circle than the one covered by the actuator disc 41. Resilient cables, which are to be introduced into the recessed luminaire 1 via the cable opening 91,91' and which are therefore present in the cavity for the housing for a rear of luminaires 9 at the beginning of the installation, can cause damages to the screw shaft 59 in almost no situations at all, because the front guidance areas 27, 29, 31 span a protective cage around the central screw 55.

[0066] The housing for electrics 3 explained in Fig. 1 is shown in a sectional view in Fig. 2, so that one can see the interior 53 of the core housing 7 as well as further details of the end cover 99. The recessed luminaire 1 has a greater, tub-like part of the core housing 7, which the tub bottom 11 belongs to. The core housing 7, together with the holding and clamping fixture 15, forms the recessed body 5, which can be secured via the screw head 57 of the central screw 55. The screw-in depth 83 of the housing for electrics 3 can be anticipated from the position of the actuator disc 41 on the screw shaft 59 of the central screw 55. The central screw 55 can perform a rotational movement 63 as an actuation screw and thus, via the thread fit 61, pulls the actuator disc 41 in a direction by means of which the screw-in depth 83 is changed. Here, the screw head 57 remains on the inner side of the base plate 13, i.e. in the interior 53 of the core housing 7. Further, the housing for a rear of luminaires 9 offers arbitrary installation depths by means of its clamps 19, 21, which depths are only limited by the screw-in depth 83 or by the length of the screw shaft 59. The rotational link 43, which is in each case formed by an expanding pin 85, 87 and the respective opening in the actuator disc 41, permits rotating movements of the clamps 19, 21. The elongate hole 33 follows the sliding surface 75 of the thorn 69 via the guidance area 27. Another sliding surface of a guidance area 29 is offered by the plate 71 for the clamp 21. For the interaction between the clamp 21 and the thorn 69, the clamp 21 offers an elongated hole 35. If the clamp 21 touches the guidance area 29, a stop 77 is formed between thorn 69 and clamp 21. If the actuator disc 41 is turned up to almost the end of the central screw 55, i.e. up to the end of the thread of the screw shaft 59, only the round bodies 73 hold the clamps 19, 21. The clamps 19, 21 end into end portions, such as the end portion 25. The end portion 25 laterally protrudes from the radius of the end cover 99. The clamps 19, 21 run sectionally parallel to the side wall of the core housing 7. If the clamps 19, 21 approach the end cover 99, the clamps 19, 21 are bent away from the core housing 7 through the end portions (e.g. end portion 25). The cover 99 is connected to the core housing 7 via the closing connection 47. The cover 99 rests on the mounting flange of the core housing 77, which is arranged on the other end compared to the base plate 13. In the rear-sided region 49 of the core housing 7, i.e. in the base plate 13 of the core housing 7, is prepared in the cable opening 91, which is released in that the cover plate 93 is pressed outward on its connector nose to the base plate 13. The screw-in depth 83 for the housing of a rear of luminaires 9 is achieved by a turning of the screw head 57 and thus a parallel displacement of the actuator disc 41 (compared to the base plate 13). The clamping device 17 encloses the tub bottom 11 by means of its structure. Here, the clamping element 39 follows the angled course of the tub bottom 11. The first portion 79 of the clamping element 38 runs essentially parallel to the base plate 13 of the core housing 7. The first portion 79 is followed by the second portion 89. The second portion is disposed at an angle relative to the first portion 79. The second portion 89 runs essentially perpendicular to the first portion 79. The second portion 89 extends in a transverse manner to the direction of the base plate 13. The second portion 89 runs parallel to the side wall of the core housing 7. The clamping element 39 looks like a wiper above or radially extended outwards of the core housing 7 due to the portions 79, 89 of said element.

[0067] The cover 99 is a luminaire insert 45 and thus has an accommodation space 98, in which a luminaire body can be inserted (not shown). Thus, the luminaire body shines out of the front side 51 of the housing for electrics 3 and transfers the housing for electrics into a recessed luminaire 1. If something is damaged in the housing for electrics 3, the end cover 99 only needs to be lifted off his closing connections 47 and the interior 53 is available. Here, the core housing 7 is held in position by means of the clamps 19, 21. Should the core housing 7 gradually slip out of its accommodation holder due to a fatigue of the clamping effect of the end portions 25 of the clamps 19, 21, the core housing 7 can be secured again by only a few rotations of the screw head 57. The holding and clamping fixture 15 is located in such a place of the core housing 7 that the holding and clamping fixture 15 is covered in the rear-sided region, in particular b the connector flange of the core housing 7 and by the tub bottom 11, while in the front region 51 unobstructed access to the interior 53 of the housing for electrics 3 is provided after removing the cover.

[0068] Fig. 3 shows another variant of a housing for a rear of luminaires 109. The housing for a rear of luminaires 109 is different from the housing for a rear of luminaires 9 of Fig. 1 in that the screw-in depth 183 induces the screw shaft 159 to project in the interior 153 of the housing for a rear of luminaires 109. Thus, the share of the screw shaft 159 that projects in the interior 153 of the housing for a rear of luminaires 109 corresponds to the installation depth and to the position of the end portions 125, 125' of the clamping devices 117. The individual clamp 119 can travel along the thorn 169. The thorn 169 comprises a portion which is plate-like, i.e. which can be called a plate 171, and a region which is to be called a round body 173. The sliding surface 175 consists of the surface of a region of the round body 173 and of the surface of the plate 171, which sliding surface is provided for a sliding of the clamping device 117. The screw shaft 159 can be set into a rotation movement 163 so that the clamping devices 117 can travel along the sliding surface 175. The end portions 125, 125' have a resilient feature in order to hold the clamping device 117 on the inner side of the cavity via the end portions 125, 125'.

[0069] Figs. 4 and 5 show a cover 199 that as a luminaire insert 145 can turn a housing for a rear of luminaires 109 (see Fig. 3) into a luminaire. Parts of the closing connection 147 are worked into the rear-sided region 149 of the cover 199, which connection offers a box-like case by means of the housing for a rear of luminaires 109 that is closed toward the front-sided region 151. An end cover 199 serving as a cover is put on the housing for a rear of luminaires 109, which as a part of the recessed luminaire is secured via the central screw 155 (see e.g. Fig. 3). The luminaire insert 145 is part of the cover 199. The luminaire insert 145 is a LED or OLED luminaire body, for which the control electronics is arranged on the electronic component 100, which is a printed circuit board having an electric component. The luminaire element 195 shines from the end cover 199 into the front-sided region 151. By means of said configuration, the luminaire insert 145 may be an insert that is only a few millimeters high, that means the construction height can be less than 2 cm. The same housing for electrics 3 (see Fig. 1) or the same housing for a rear of luminaires 109 (see Fig. 3) can become a totally different device by use of a different end cover 299 (see Fig. 6).

[0070] Fig. 6 shows an end cover 299 having latch noses 248, 248'. The latch noses 248, 248' only have to be located at the same position as the connection 147. The end cover 299 is a base plate for electronic components 100', 100", 100'", 100"". So, the end cover 299 is a fixture element for the electronic component 100', which is a capacitor, the electronic component 100", which is a transformer, the electronic component 100'", which is a printed circuit board, and the electronic component 100"", which is a standby power source.

[0071] If a housing for electronics 3 or a housing for a rear of luminaires 9 is used, a recessed luminaire 1 can be turned into another flush-mounted electrical device by one single hand movement. Thus, a simple adjustment of the electronic installation in a building, in particular in individual rooms of the building, is possible. The housing for electrics 3 can be installed almost one-handed in that several rotations of the screw head 57 effect the securing of the holding and clamping fixture 15. After shocks or due to fatigue, it is sufficient if the central screw 55, 155 is tightened, often by fractions of a rotation only.

[0072] Presented is a housing for electrics 3, in which a luminaire element 195 can be inserted in order to turn the housing for electrics 3 into a luminaire body 97. Installation is simple, fast and reliable. Even an undesirable re-installation can be effected very simple and fast. The holding and clamping fixture 15 is arranged in the rear-sided region 49 in a protected manner. Mechanical impact to the holding and clamping fixture 15, in particular deformations of the central screw 55, 155, is largely prevented. Although only one central screw 55, 155 is to be actuated as an actuation screw during the installation, the housing for electrics 3 automatically takes the correct position and state. Also a straight alignment of the housing for electrics 3 is possible in a simple manner. If the housing for electrics 3 is located obliquely in the accommodation opening, the central screw 55, 155 is to be opened by a few millimeters only, for example less than 3 mm, and the housing for electrics 3 is to be aligned by application of slight pressure to the flange so that the central screw 55, 155 can be tightened again.

[0073] By means of the holding- and clamping mechanisms described above, such as the holding and clamping device 55, the clamping devices can be extended by means of a central screw, such as the central screw 55, in particular until a stop of the clamping devices at the wall surrounding the housing is effected. Subsequent thereto, a height adjustment can be effected by a turning of the centrals screw. Thereby, the installation depth of the core housing can be adjusted continuously, depending only on the angular position of the shaft of the central screw.

[0074] At locations where a most great rotation radius is to be provided, the thorns only have a curved guide, while in the close range, i.e. directly adjacent to the tub bottom, wider guidance faces - compared to the bottom of the thorn - are offered for a more stable support of the respective clamp on the respective thorn.

Reference Numeral List I recessed luminaire 3 housing for electrics 5 recessed body 7 core housing 9, 109 housing for a rear of luminaires II tub bottom 13 baseplate 15 holding and clamping device 17,117 clamping device 19,119 first clamp 21 second clamp 23 third clamp 25, 25', 25", 125, 125' end portion, in particular of a clamp 27 first guidance area 29 second guidance area 31 third guidance area 33 first elongated hole 35 second elongated hole 37 third elongated hole 39 clamping element 41 actuator disc 43 rotational link 45, 145 luminaire insert 47,147 closing connection 248, 248' latch nose 49,149 rear-sided region 51, 151 front-sided region 53, 153 Interior, in particular of the housing for electrics 55, 155 central screw or actuation screw 57 screw head, in particular of the central screw 59,159 screw shaft 61 thread fit 63, 163 rotational movement or rotation movement 65 pivoting movement, in particular of a clamping element 67 tensioning movement 69, 169 thorn 71, 171 plate, in particular of the thorn 73, 173 round body, in particular of the thorn 75,175 sliding surface 77 first stop 79 first portion, in particular of a clamp 81 second stop 83,183 screw-in depth 85 first expansion pin 87 second expansion pin 89 second portion, in particular of a clamp 91,91' cable opening 93,93' cover plate 195 luminaire element, in particular luminaires such as LEDs 197 luminaire body 98 accommodation space for the luminaire body 99,199,299 cover plate 100, 100', 100", electronic component 100’", 100""

Claims

A box-like electronics cabinet (3) with a holding and clamping device (15), in particular for concealed installation in the form of a tub-like lamp baking cabinet (9, 109) comprising a clamping element (17, 117) with at least one clamping clamp (19 , 21, 23, 119) and a carrier disk (41), characterized in that the carrier disk (41) can be rotatably moved by means of a central screw (55, 155) acting in particular from the interior of the electronic cabinet (53,153) via a screw head (57) and that the clamping clamp (25, 25 ', 25 ", 125, 125') is fixed in one end region via a rotary connection (43) to the drive disc (41), whereby the rotary movement of the central screw (55, 155) allows a radial clamping movement (67) carried on a judgment (69, 169) of the clamping clamp (19, 21, 23,119) until a stop.

Electronic cabinet (3) according to claim 1, characterized in that at least one clamping clamp (19, 21, 23, 119) of the dome (69, 169) height-adjustably follows a screw-in depth (83, 183) for the central screw (55, 155). ) into the electronics cabinet (3).

Electronic cabinet (3) according to one of the preceding claims, characterized in that the dome (69, 169) is provided with a first plate-shaped section (71,171) and a round body (73, 173) adjacent thereto, a long hole (33, 35, 37) in at least one clamp (19, 21, 23, 119) is preferably aligned to the widest point of the dome (69, 169).

Electronic cabinet (3) according to one of the preceding claims, characterized in that the pivot connection (43) between the clamping clamp (19, 21, 23, 119) and the carrier disc (41) is formed by means of a molded and / or force-closing member. expansion pin (85, 87).

Electronic cabinet (3) according to one of the preceding claims, characterized in that the clamping clamp (19, 21, 23, 119) in a first section (79), in particular in a section adjacent to the carrier disc (41), extending in a unidirectional extension to an orientation of the carrier disc (41) and in a second section (89) extending at an angle, especially at a right angle, relative to the first section and preferably ending in a third section (25.25 '). , 25 ", 125, 125 ') with a bend.

Electronics cabinet (3) according to one of the preceding claims, characterized in that the stop (77, 81) is a projection from the carrier disc (41), which is preferably located on one side of the carrier disc (41) facing a surface. of a tub-like main enclosure (7) such as a recessed body (5) in the electronic enclosure (3).

Electronics cabinet (3) according to one of the preceding claims, characterized in that at least one cable opening (91, 9F) is incorporated in a base plate (13) of the electronic cabinet (3) which is closed in its original state to using a small clamping plate (93, 93 ').

Electronic cabinet (3) according to one of the preceding claims, characterized in that a length of the screw shaft (59, 159) of the central screw (55, 155) is adjusted to a height of the dome (69, 169), particularly adapted to such that an end of the dome (69, 169) on the side constitutes a movement inhibition for the carrier disc (41).

A recessed lamp (1) comprising a tub-like recessed body (5) and a lamp insert (45, 145) which can be brought into a locking connection (47,147) with one another, and the recessed body (5) in a region (49, 149) on the rear is provided with a clamping element (17, 117) comprising an operating screw (55, 155), characterized in that the clamping element (17, 117) comprises a carrier disc (41) which can be moved by the operating screw (55, 155) via a threaded fitting (61), and at least one clamping clamp (19, 21, 23, 119), preferably three clamping clips mounted pivotally by the carrier disc (41), particularly limited in a pivotal movement (63, 163) by by means of a stop (77, 81), the at least one clamp (19, 21, 23, 119) for guiding (27, 29, 31) of the clamp (19, 21, 23, 119) in a movement in radially away from the carrier disk (41) is provided with an elongated, at least one-sided guide region (27, 29, 31), such as a long hole (33, 35, 37), which are preferably assigned to at least one judgment (69, 169) on the body (5) which is immovable relative to the carrier disc (41) and provided with a sliding surface (75, 175) for displacement of the clamping clamp (19, 21, 23, 119) of the dome (69, 169) in the direction of a vessel bottom (11), in particular a base plate (13) of the mounting body (5).

The recessed lamp (1) according to claim 9, characterized in that the recessed body (5) is formed as the electronic cabinet (3) according to one of claims 1 to 8.

Method for installing a recessed lamp (1), in particular according to one of claims 9 or 10, comprising a lamp element (195), a recessed body (5) and a clamping element (17, 117), preferably with an electronic cabinet (3). according to one of claims 1 to 8, characterized in that the clamping element (17, 117) is clamped in a holding position with a one-hand turning movement (63, 163) of less than 180 °, preferably less than 90 °, of an operating screw (55, 155) on the clamping element (17, 117), preferably by means of a swinging movement (65) of at least one clamping element (39), and by means of further unidirectional turning movements (63, 163) that can be transmitted at a head (57) of the operating screw (55, 155), can be pulled into an intermediate region defined by the clamping element (39) of the clamping element (17, 117) and the lamp element (195) can be manually added to the built-in body (5) , especially forming an electrical connection, having hooves preferably (57) on the operating screw (55, 155) is positioned on one side of the recessed body (5) facing the lamp element (195) and the operating screw (55, 155) by means of a hole (33, 35, 37) in the housing body (5) pivotally engages a thread (61) on the clamping element (17, 117) located on the other side relative to the housing body (5), in particular by bringing the thread (61) from a pivotal position to an impact position.