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EP0116909B1 - Means for fixing a pull-down cover in a lighting fixture - Google Patents

Means for fixing a pull-down cover in a lighting fixture Download PDF

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Publication number
EP0116909B1
EP0116909B1 EP84101340A EP84101340A EP0116909B1 EP 0116909 B1 EP0116909 B1 EP 0116909B1 EP 84101340 A EP84101340 A EP 84101340A EP 84101340 A EP84101340 A EP 84101340A EP 0116909 B1 EP0116909 B1 EP 0116909B1
Authority
EP
European Patent Office
Prior art keywords
cover
supporting
holder
spring
bearing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84101340A
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German (de)
French (fr)
Other versions
EP0116909A1 (en
Inventor
Jürgen Brüggemann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19833305290 external-priority patent/DE3305290A1/en
Priority claimed from DE19833317274 external-priority patent/DE3317274A1/en
Priority claimed from DE19833334803 external-priority patent/DE3334803A1/en
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT84101340T priority Critical patent/ATE24235T1/en
Publication of EP0116909A1 publication Critical patent/EP0116909A1/en
Application granted granted Critical
Publication of EP0116909B1 publication Critical patent/EP0116909B1/en
Expired legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/16Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
    • F21V17/164Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting the parts being subjected to bending, e.g. snap joints

Definitions

  • the invention relates to the mounting of a lowerable lamp cover on a lamp housing according to the preamble of claim 1.
  • the object of the invention is to design the aforementioned holder so that the cover, which is lowered relative to the lamp housing and held by the suspension springs on two opposite sides of the lamp housing, can be detached from the suspension springs on one of the two sides and then around the suspension springs on the opposite side of the lamp housing is pivotable.
  • the spring holder 2 is fastened with side support walls 22 and an upper support wall 24 to the side wall 11 1 and / or the housing cover 12 of the lamp housing 1, the side support walls 22 having angled plug-in arms at their lower ends 221, which reach through assigned slots 111 in the side wall 11 of the lamp housing.
  • the side support walls 22 of the spring holder 2 are offset relative to its top wall 20 by approximately the thickness of the suspension spring 4, so that a guide space 23 is formed between the top wall 20 of the spring holder 2 and the side wall 11 of the lamp housing 1, which is parallel from below through a guide slot 231 is accessible to the side wall 11 and is laterally limited by the side walls 21 of the spring holder 2; the distance b between these side walls (FIG. 2) is smaller than the distance B between the projections 43 of the suspension spring 4.
  • the lamp cover 3 arranged in the light exit opening 13 of the lamp housing 1 is shown here as a grid with a longitudinal wall 30, which has a V-shaped, upwardly open edge region with a longitudinal edge 31 at the bottom.
  • the latter is bent over it in the area of the bearing arms 411 of the suspension spring 4 and thus forms bearing pieces 31 1 in which the bearing arms 411 can be rotated and have the inlet openings 3110 directed towards one another: Therefore, the suspension springs can be detached from it when the lamp cover 3 is pulled down by the support arms 41 of the suspension spring are pressed against each other. However, this is no longer possible even after a small rotation of the longitudinal wall 30 (in the direction of the arrow in FIG. 1), since then the locking tab 313 (see FIG. 2) between the support arms 41 of the suspension spring and thus limits their range of motion.
  • the lamp cover 3 is therefore already secured against inadvertent release from the suspension spring when it is swiveled down and in particular in the swiveled-out state.
  • a piece of the longitudinal edge 31 forms an earthing tab 312, which is bent so far inwards that the free end face of the bearing arms 411 of the suspension spring resiliently presses against its cutting edge 3121: this creates a ground connection between the suspension spring and lamp cover 3 is produced, which is guaranteed even if the longitudinal wall 30 of the lamp cover 3 consists of pre-coated sheet metal.
  • the downward-pointing support leg 432 being one includes an acute angle a with the plane of the light exit opening.
  • this angle is so large that this support leg 432 rests on the support edge 211 at the upper end of the side walls 21 of the guide space 23 with sufficient friction resistance to hold the lamp cover 3 in the light exit opening 13 (FIG. 2, drawn position of the support spring 4) .
  • the inclination of the support leg 432 enables the cover to be pulled down, the projections 43 of the support spring 4 being pressed against one another until they finally enter the guide space 23 and slide along the side walls 21 of the guide space 23 as they are pulled down, and also for one ensure safe ground contact (position of the suspension spring 4 'in Fig. 2).
  • the downward range of motion of the suspension spring 4 is limited by hooks 201 which protrude into the guide space 23 and on which the suspension spring 4 hooks (position of the spring designated by 4 "in FIG. 2).
  • the thighs 431 then press the Protrusions 43 against the lower edge 212 of the side walls 21 of the spring holder 2 and thus secure a ground connection, assuming the dimensional relationship shown in Fig. 2 and also that the support arms 41 of the suspension spring 4 in the position shown in Fig. 2 with outward bias press against the earthing tab 312.
  • FIGS. 4 to 6 An alternative to this is shown in FIGS. 4 to 6, in which a molded bearing part 5, preferably made of plastic, is provided, which has both two spaced-apart bearing pieces 511 and a locking tab 512 located between them.
  • This shaped bearing part 5 is placed on the free leg of the U-shaped longitudinal edge 31.1, which for this purpose has a somewhat recessed edge 31.13 and two recesses 31.11 for receiving the locking hooks 521 of spring legs 52 of the shaped bearing part.
  • Each spring leg 52 runs at a distance corresponding to the thickness of the sheet metal of the cover from a main leg 51 of the shaped bearing part 5.
  • the edge 31.13 of the longitudinal edge 31.1 of the cover 3.1 is set back from the edge of this free leg approximately by the height of the bearing pieces 511, so that the ends of the bearing arms 411 resiliently rest on the cutting edges 31.12 of the adjacent earthing tabs 312.1.
  • a spring holder 2.1 made of galvanized sheet metal is provided for each support spring 4.2 and is fastened to the housing cover 12 by means of a supporting wall 24.1.
  • This spring holder encloses with its cover wall 20.1 and laterally angled guide walls 22.1 (FIG. 9) the guide space 23.1, which is laterally delimited by side walls 21.1 and protrude into the hooks 201.1 from the cover wall 20.1.
  • each suspension spring 4.2 The two free ends of the support arms 41.2 of each suspension spring 4.2 are angled twice, namely once within a plane parallel to the light exit opening 13 and also in a plane perpendicular to this light exit opening: parallel to the plane of the light exit opening and to the longitudinal edge 31.2 of the cover 3.2 there is a free end piece in each case 410.2;
  • the bearing arm 411.2 (FIG. 11) perpendicular to this end piece 410.2 is also arranged in the same plane. This is also approximately perpendicular to the side wall 11 of the lamp housing 1.
  • the longitudinal edge 31.2 of the cover 3.2 has a slot-shaped recess 31.20 for each supporting spring 4.2, which runs parallel to this longitudinal edge and to the light exit opening (FIG. 10). Through this recess, the support arms 41.2 of each suspension spring with its bearing arm 411.2 and the adjoining end piece 410.2 engage in the upwardly open V-shaped edge region of the cover (FIG. 11).
  • the cover 3.2 is pivoted into the light exit opening 13 of the lamp housing 1 - as shown in broken lines in FIG. 11 - the upper edge 31.21 of the recess 31.20 rests on the bearing arms 41 1.2 of each suspension spring 4.2. If, on the other hand, the cover is pivoted out - as shown in FIG. 11 - then it lies on the bearing arms 411.2 with the edge 31.23 of its longitudinal edge 31.2.
  • each support spring 4.2 To unhook the cover, the support arms 41.2 of each support spring 4.2 must be pressed against one another until both end pieces 410.2 can pass through the slot-shaped recess 31.20. With the appropriate length of these end pieces, accidental, unintentional unhooking of the cover is therefore excluded.
  • the length of the cutout 31.20 is slightly smaller than the width b of the guide space 23.1 of the spring holder 2.1 (FIG. 8): this ensures that the ends of the support arms 41.2 always bear against the lateral cutting edges 31.22 of this cutout 31.20 and for an electrical one Provide connection.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Semiconductor Lasers (AREA)

Description

Die Erfindung betrifft die Halterung einer absenkbaren Leuchtenabdeckung an einem Leuchtengehäuse gemäss Oberbegriff von Anspruch 1.The invention relates to the mounting of a lowerable lamp cover on a lamp housing according to the preamble of claim 1.

Eine solche Halterung ist aus der US-A 2 960 361 bekannt. Die Tragfedern sind hierbei unlösbar mit der Abdeckung verbunden. Diese Technik ist daher grundsätzlich für die Zwecke der Erfindung nicht geeignet.Such a holder is known from US-A 2 960 361. The suspension springs are inextricably linked to the cover. This technique is therefore fundamentally unsuitable for the purposes of the invention.

Der Erfindung liegt nämlich die Aufgabe zugrunde, die vorgenannte Halterung so auszugestalten, dass die gegenüber dem Leuchtengehäuse abgesenkte und durch die Tragfedern auf zwei gegenüberliegenden Seiten des Leuchtengehäuses gehaltene Abdekkung auf einer der beiden Seiten von den Tragfedern lösbar und dann um die Tragfedern auf der gegenüberliegenden Seite des Leuchtengehäuses schwenkbar ist.The object of the invention is to design the aforementioned holder so that the cover, which is lowered relative to the lamp housing and held by the suspension springs on two opposite sides of the lamp housing, can be detached from the suspension springs on one of the two sides and then around the suspension springs on the opposite side of the lamp housing is pivotable.

Die erfindungsgemässe Lösung dieser Aufgabe ist in Anspruch 1 gekennzeichnet. Ihr Wesen besteht in der Führung einer aus Draht gebogenen Tragfeder, wodurch sich ein stabiler Drehpunkt für die gegenüber dem Gehäuse abgesenkte und nur auf einer Seiten an den Tragfedern hängende Abdeckung ergibt.The inventive solution to this problem is characterized in claim 1. Its essence consists in guiding a suspension spring bent from wire, which results in a stable pivot point for the cover, which is lowered relative to the housing and only hangs on one side on the suspension springs.

Die Erfindung wird anhand von Ausführungsbeispielen näher erläutert; es zeigen

  • Fig. 1 einen Querschnitt durch den Randbereich einer Leuchte (Schnitt I-I in Fig. 2),
  • Fig. 2 eine Draufsicht auf diesen Randbereich in Richtung des Pfeiles 11 in Fig. 1,
  • Fig. 3 einen Schnitt entlang Linie 111-111 in Fig. 1, wobei die Leuchtenabdeckung und die Tragfeder weggelassen ist,
  • Fig. 4 eine Draufsicht auf ein Lagerformteil zur Verbindung einer anderen Ausführungsform einer Abdeckung,
  • Fig. 5 einen Schnitt entlang Linie V-V in Fig. 4,
  • Fig. 6 einen Schnitt entlang Linie VI-VI in Fig. 4,
  • Fig. 7 einen Querschnitt durch den Randbereich einer weiteren Ausführungsform einer Leuchte,
  • Fig. 8 eine Draufsicht auf den Federhalter von Fig.7 in Richtung des Pfeiles VIII,
  • Fig. 9 einen Schnitt entlang Linie IX-IX in Fig. 8,
  • Fig. 10 den Randbereich einer abgeschwenkten Abdeckung mit Tragfeder (Ansicht in Richtung des Pfeiles X in Fig. 11), und
  • Fig. 11 eine Seitenansicht von Fig. 10 in Richtung des Pfeiles XI.
The invention is explained in more detail using exemplary embodiments; show it
  • 1 shows a cross section through the edge region of a lamp (section II in FIG. 2),
  • 2 shows a plan view of this edge region in the direction of arrow 11 in FIG. 1,
  • 3 shows a section along line 111-111 in FIG. 1, the lamp cover and the suspension spring being omitted,
  • 4 is a plan view of a molded bearing part for connecting another embodiment of a cover,
  • 5 shows a section along line VV in FIG. 4,
  • 6 shows a section along line VI-VI in FIG. 4,
  • 7 shows a cross section through the edge region of a further embodiment of a lamp,
  • 8 is a plan view of the spring holder of Figure 7 in the direction of arrow VIII,
  • 9 shows a section along line IX-IX in FIG. 8,
  • Fig. 10 shows the edge region of a pivoted cover with suspension spring (view in the direction of arrow X in Fig. 11), and
  • Fig. 11 is a side view of Fig. 10 in the direction of arrow XI.

In den Figuren sind die Teile wie folgt bezeichnet:

Figure imgb0001
Figure imgb0002
In the figures, the parts are labeled as follows:
Figure imgb0001
Figure imgb0002

Bei der Ausführungsform nach den Fig. 1 bis 3 ist der Federhalter 2 mit seitlichen Stützwänden 22 und einer oberen Stützwand 24 an der Seitenwand 11 1 und/oder der Gehäusedecke 12 des Leuchtengehäuses 1 befestigt, wobei die seitlichen Stützwände 22 an ihren unteren Enden abgewinkelte Steckarme 221 aufweisen, die durch zugeordnete Schlitze 111 in der Seitenwand 11 des Leuchtengehäuses hindurchgreifen. Die seitlichen Stützwände 22 des Federhalters 2 sind gegenüber dessen Deckwand 20 etwa um die Dicke der Tragfeder 4 versetzt, so dass ein Führungsraum 23 zwischen der Deckwand 20 des Federhalters 2 und der Seitenwand 11 des Leuchtengehäuses 1 entsteht, der von unten durch einen Führungsschlitz 231 parallel zur Seitenwand 11 zugänglich ist und der seitlich von den Seitenwänden 21 des Federhalters 2 begrenzt ist; der Abstand b dieser Seitenwände (Fig. 2) ist kleiner als der Abstand B zwischen den Vorsprüngen 43 der Tragfeder 4.In the embodiment according to FIGS. 1 to 3, the spring holder 2 is fastened with side support walls 22 and an upper support wall 24 to the side wall 11 1 and / or the housing cover 12 of the lamp housing 1, the side support walls 22 having angled plug-in arms at their lower ends 221, which reach through assigned slots 111 in the side wall 11 of the lamp housing. The side support walls 22 of the spring holder 2 are offset relative to its top wall 20 by approximately the thickness of the suspension spring 4, so that a guide space 23 is formed between the top wall 20 of the spring holder 2 and the side wall 11 of the lamp housing 1, which is parallel from below through a guide slot 231 is accessible to the side wall 11 and is laterally limited by the side walls 21 of the spring holder 2; the distance b between these side walls (FIG. 2) is smaller than the distance B between the projections 43 of the suspension spring 4.

Die in der Lichtaustrittsöffnung 13 des Leuchtengehäuses 1 angeordnete Leuchtenabdeckung 3 ist hier als Raster mit einer Längswand 30 dargestellt, die unten einen V-förmigen, nach oben offenen Randbereich mit einem Längsrand 31 hat. Letzterer ist im Bereich der Lagerarme 411 der Tragfeder 4 über diese darübergebogen und bildet so Lagerstücke 31 1, in denen die Lagerarme 411 drehbar sind und die aufeinander zu gerichtete Eintrittsöffnungen 3110 haben: Daher lassen sich die Tragfedern bei herabgezogener Leuchtenabdeckung 3 von ihr lösen, indem die Tragarme 41 der Tragfeder gegeneinander gedrückt werden. Dies ist jedoch schon nach einer kleinen Drehung der Längswand 30 (in Fig. 1 in Pfeilrichtung) nach unten nicht mehr möglich, da dann der Sperrlappen 313 (vgl. Fig. 2) zwischen die Tragarme 41 der Tragfeder tritt und damit deren Bewegungsspielraum begrenzt. Die Leuchtenabdeckung 3 ist daher bereits beim Herunterschwenken und insbesondere im abgeschwenkten Zustand gegen versehentliches Lösen von der Tragfeder gesichert.The lamp cover 3 arranged in the light exit opening 13 of the lamp housing 1 is shown here as a grid with a longitudinal wall 30, which has a V-shaped, upwardly open edge region with a longitudinal edge 31 at the bottom. The latter is bent over it in the area of the bearing arms 411 of the suspension spring 4 and thus forms bearing pieces 31 1 in which the bearing arms 411 can be rotated and have the inlet openings 3110 directed towards one another: Therefore, the suspension springs can be detached from it when the lamp cover 3 is pulled down by the support arms 41 of the suspension spring are pressed against each other. However, this is no longer possible even after a small rotation of the longitudinal wall 30 (in the direction of the arrow in FIG. 1), since then the locking tab 313 (see FIG. 2) between the support arms 41 of the suspension spring and thus limits their range of motion. The lamp cover 3 is therefore already secured against inadvertent release from the suspension spring when it is swiveled down and in particular in the swiveled-out state.

Auf der der Eintrittsöffnung 3110 jedes Lagerstükkes 311 gegenüberliegenden Seite bildet ein Stück des Längsrandes 31 einen Erdungslappen 312, der so weit nach innen umgebogen ist, dass die freie Stirnseite der Lagerarme 411 der Tragfeder federnd gegen seine Schnittkante 3121 drückt: Dadurch ist eine Masseverbindung zwischen Tragfeder und Leuchtenabdeckung 3 hergestellt, die auch dann gewährleistet ist, wenn die Längswand 30 der Leuchtenabdeckung 3 aus vorbeschichtetem Blech besteht.On the side opposite the inlet opening 3110 of each bearing piece 311, a piece of the longitudinal edge 31 forms an earthing tab 312, which is bent so far inwards that the free end face of the bearing arms 411 of the suspension spring resiliently presses against its cutting edge 3121: this creates a ground connection between the suspension spring and lamp cover 3 is produced, which is guaranteed even if the longitudinal wall 30 of the lamp cover 3 consists of pre-coated sheet metal.

Zwischen dem oberen Ende der Tragarme 41 der M-förmigen Tragfeder 4 und ihrem V-förmigen Verbindungsstück 42 liegt je ein Vorsprung 43, der von einem Tragschenkel 432 und einem etwa rechtwinklig dazu verlaufenden Oberschenkel 431 gebildet wird, wobei der nach unten gerichtete Tragschenkel 432 einen spitzen Winkel a mit der Ebene der Lichtaustrittsöffnung einschliesst. Dieser Winkel ist einerseits so gross, dass dieser Tragschenkel 432 auf der Tragkante 211 am oberen Ende der Seitenwände 21 des Führungsraumes 23 mit genügend Reibungswiderstand aufliegt, um die Leuchtenabdeckung 3 in der Lichtaustrittsöffnung 13 zu halten (Fig. 2, gezeichnete Position der Tragfeder 4). Andererseits ermöglicht die Neigung des Tragschenkels 432 ein Herabziehen der Abdeckung nach unten, wobei die Vorsprünge 43 der Tragfeder 4 gegeneinander gedrückt werden, bis sie schliesslich in den Führungsraum 23 eintreten und beim weiteren Herabziehen an den Seitenwänden 21 des Führungsraumes 23 entlanggleiten und hierbei ebenfalls für einen sicheren Massekontakt sorgen (Position der Tragfeder 4' in Fig. 2).Between the upper end of the support arms 41 of the M-shaped suspension spring 4 and its V-shaped connecting piece 42 there is a projection 43, which is formed by a support leg 432 and an approximately perpendicular thigh 431, the downward-pointing support leg 432 being one includes an acute angle a with the plane of the light exit opening. On the one hand, this angle is so large that this support leg 432 rests on the support edge 211 at the upper end of the side walls 21 of the guide space 23 with sufficient friction resistance to hold the lamp cover 3 in the light exit opening 13 (FIG. 2, drawn position of the support spring 4) . On the other hand, the inclination of the support leg 432 enables the cover to be pulled down, the projections 43 of the support spring 4 being pressed against one another until they finally enter the guide space 23 and slide along the side walls 21 of the guide space 23 as they are pulled down, and also for one ensure safe ground contact (position of the suspension spring 4 'in Fig. 2).

Der Bewegungsspielraum der Tragfeder 4 nach unten ist durch Haken 201 begrenzt, die in den Führungsraum 23 ragen und an denen sich die Tragfeder 4 verhakt (Position der mit 4" bezeichneten Feder in Fig. 2). In dieser Position drücken dann die Oberschenkel 431 der Vorsprünge 43 gegen die Unterkante 212 der Seitenwände 21 des Federhalters 2 und sichern damit eine Masseverbindung. Dabei ist die in Fig. 2 dargestellte Abmessungsrelation vorausgesetzt und auch, dass die Tragarme 41 der Tragfeder 4 in der in Fig. 2 dargestellten Position mit Vorspannung nach aussen gegen die Erdungslappen 312 drücken.The downward range of motion of the suspension spring 4 is limited by hooks 201 which protrude into the guide space 23 and on which the suspension spring 4 hooks (position of the spring designated by 4 "in FIG. 2). In this position the thighs 431 then press the Protrusions 43 against the lower edge 212 of the side walls 21 of the spring holder 2 and thus secure a ground connection, assuming the dimensional relationship shown in Fig. 2 and also that the support arms 41 of the suspension spring 4 in the position shown in Fig. 2 with outward bias press against the earthing tab 312.

Je nach Abmessungen ist es mitunter fertigungstechnisch schwierig, die Lagerstücke durch Umbiegen des V-förmigen Längsrandes herzustellen. Eine Alternative hierzu ist in den Fig. 4 bis 6 gezeigt, in denen ein Lagerformteil 5, vorzugsweise aus Kunststoff, vorgesehen ist, das sowohl zwei im Abstand voneinander liegende Lagerstücke 511 als auch einen zwischen ihnen liegenden Sperrlappen 512 aufweist. Dieses Lagerformteil 5 ist auf den freien Schenkel des U-förmig ausgebildeten Längsrandes 31.1 aufgesteckt, der hierzu eine etwas zurückgesetzte Kante 31.13 und zwei Aussparungen 31.11 zur Aufnahme der Sperrhaken 521 von Federschenkeln 52 des Lagerformteiles hat. Jeder Federschenkel 52 verläuft in einem der Dicke des Blechs der Abdeckung entsprechenden Abstand von einem Hauptschenkel 51 des Lagerformteiles 5.Depending on the dimensions, it is sometimes difficult to manufacture the bearing pieces by bending the V-shaped longitudinal edge. An alternative to this is shown in FIGS. 4 to 6, in which a molded bearing part 5, preferably made of plastic, is provided, which has both two spaced-apart bearing pieces 511 and a locking tab 512 located between them. This shaped bearing part 5 is placed on the free leg of the U-shaped longitudinal edge 31.1, which for this purpose has a somewhat recessed edge 31.13 and two recesses 31.11 for receiving the locking hooks 521 of spring legs 52 of the shaped bearing part. Each spring leg 52 runs at a distance corresponding to the thickness of the sheet metal of the cover from a main leg 51 of the shaped bearing part 5.

Die Kante 31.13 des Längsrandes 31.1 der Abdeckung 3.1 ist gegenüber der Randkante dieses freien Schenkels etwa um die Bauhöhe der Lagerstücke 511 zurückversetzt, so dass die Enden der Lagerarme 411 federnd auf den Schnittkanten 31.12 der benachbarten Erdungslappen 312.1 aufliegen.The edge 31.13 of the longitudinal edge 31.1 of the cover 3.1 is set back from the edge of this free leg approximately by the height of the bearing pieces 511, so that the ends of the bearing arms 411 resiliently rest on the cutting edges 31.12 of the adjacent earthing tabs 312.1.

Bei dieser Ausführungsform der Erfindung braucht somit lediglich ein Randstreifen der Abdeckung mit Ausklinkungen zur Aufnahme des Lagerformteiles ausgerüstet zu werden. Die fertigungstechnisch schwierigeren Gestaltungselemente sind dagegen in das Lagerformteil verlegt, das aber als Spritzteil ebenfalls leicht zu fertigen ist.In this embodiment of the invention, therefore, only one edge strip of the cover needs to be equipped with notches for receiving the molded bearing part. The design elements, which are more difficult in terms of production technology, on the other hand, are moved into the molded bearing part, which, however, is also easy to manufacture as an injection molded part.

Bei der Ausführungsform nach den Fig. 7 bis 10 ist je Tragfeder 4.2 je ein Federhalter 2.1 aus verzinktem Blech vorgesehen, der mittels einer Stützwand 24.1 an der Gehäusedecke 12 befestigt ist. Dieser Federhalter umschliesst mit seiner Deckwand 20.1 und seitlich von dieser umgewinkelten Führungswänden 22.1 (Fig. 9) den Führungsraum 23.1, der seitlich durch Seitenwände 21.1 begrenzt ist und in den von der Deckwand 20.1 her Haken 201.1 hineinragen.In the embodiment according to FIGS. 7 to 10, a spring holder 2.1 made of galvanized sheet metal is provided for each support spring 4.2 and is fastened to the housing cover 12 by means of a supporting wall 24.1. This spring holder encloses with its cover wall 20.1 and laterally angled guide walls 22.1 (FIG. 9) the guide space 23.1, which is laterally delimited by side walls 21.1 and protrude into the hooks 201.1 from the cover wall 20.1.

Die beiden freien Enden der Tragarme 41.2 jeder Tragfeder 4.2 sind doppelt abgewinkelt, nämlich einmal innerhalb einer Ebene parallel zur Lichtaustrittsöffnung 13 und ferner in einer Ebene senkrecht zu dieser Lichtaustrittsöffnung: Parallel zur Ebene der Lichtaustrittsöffnung und zum Längsrand 31.2 der Abdeckung 3.2 liegt jeweils ein freies Endstück 410.2; in derselben Ebene ist ferner der zu diesem Endstück 410.2 senkrechte Lagerarm 411.2 (Fig.11) angeordnet. Dieser steht ausserdem etwa senkrecht auf der Seitenwandung 11 des Leuchtengehäuses 1.The two free ends of the support arms 41.2 of each suspension spring 4.2 are angled twice, namely once within a plane parallel to the light exit opening 13 and also in a plane perpendicular to this light exit opening: parallel to the plane of the light exit opening and to the longitudinal edge 31.2 of the cover 3.2 there is a free end piece in each case 410.2; The bearing arm 411.2 (FIG. 11) perpendicular to this end piece 410.2 is also arranged in the same plane. This is also approximately perpendicular to the side wall 11 of the lamp housing 1.

Der Längsrand 31.2 der Abdeckung 3.2 hat je Tragfeder 4.2 eine schlitzförmige Aussparung 31.20, die parallel zu diesem Längsrand und zur Lichtaustrittsöffnung verläuft (Fig. 10). Durch diese Aussparung greifen die Tragarme 41.2 jeder Tragfeder mit ihrem Lagerarm 411.2 und dem daran anschliessenden Endstück 410.2 in den nach oben offenen V-förmigen Randbereich der Abdeckung (Fig. 11). Wenn die Abdeckung 3.2 in die Lichtaustrittsöffnung 13 des Leuchtengehäuses 1 eingeschwenkt ist - wie in Fig. 11 gestrichelt dargestellt - ruht die Oberkante 31.21 der Aussparung 31.20 auf den Lagerarmen 41 1.2 jeder Tragfeder 4.2. Ist dagegen die Abdeckung herausgeschwenkt - wie in Fig. 11 dargestellt - dann liegt sie mit der Randkante 31.23 ihres Längsrandes 31.2 auf den Lagerarmen 411.2 auf.The longitudinal edge 31.2 of the cover 3.2 has a slot-shaped recess 31.20 for each supporting spring 4.2, which runs parallel to this longitudinal edge and to the light exit opening (FIG. 10). Through this recess, the support arms 41.2 of each suspension spring with its bearing arm 411.2 and the adjoining end piece 410.2 engage in the upwardly open V-shaped edge region of the cover (FIG. 11). When the cover 3.2 is pivoted into the light exit opening 13 of the lamp housing 1 - as shown in broken lines in FIG. 11 - the upper edge 31.21 of the recess 31.20 rests on the bearing arms 41 1.2 of each suspension spring 4.2. If, on the other hand, the cover is pivoted out - as shown in FIG. 11 - then it lies on the bearing arms 411.2 with the edge 31.23 of its longitudinal edge 31.2.

Zum Aushängen der Abdeckung müssen die Tragarme 41.2 jeder Tragfeder 4.2 so weit gegeneinander gedrückt werden, bis beide Endstücke 410.2 durch die schlitzförmige Aussparung 31.20 hindurchtreten können. Bei entsprechender Länge dieser Endstücke ist daher ein zufälliges, unbeabsichtigtes Aushängen der Abdeckung ausgeschlossen.To unhook the cover, the support arms 41.2 of each support spring 4.2 must be pressed against one another until both end pieces 410.2 can pass through the slot-shaped recess 31.20. With the appropriate length of these end pieces, accidental, unintentional unhooking of the cover is therefore excluded.

Die Länge der Aussparung 31.20 ist etwas kleiner als die Breite b des Führungsraumes 23.1 des Federhalters 2.1 (Fig. 8): Damit ist gewährleistet, dass die Enden der Tragarme 41.2 stets mit Vorspannung an den seitlichen Schnittkanten 31.22 dieser Aussparung 31.20 anliegen und für eine elektrische Verbindung sorgen.The length of the cutout 31.20 is slightly smaller than the width b of the guide space 23.1 of the spring holder 2.1 (FIG. 8): this ensures that the ends of the support arms 41.2 always bear against the lateral cutting edges 31.22 of this cutout 31.20 and for an electrical one Provide connection.

Claims (12)

1. A holder for a pull-down cover of a lighting fixture (3) in a lighting housing (1) comprising supporting springs (4), each of which
- is connected to the cover (3) at the edge region thereof,
- has an M-shaped upper part with outer supporting arms (41, 41.2) and a V-shaped connecting piece (42) between them and a projection (43) with a supporting flank (432) between each supporting arm and the connecting piece (42), where the two supporting flanks respectively form acute angles (a) with the light outlet plane, the points of the angles (a) directed towards the connecting piece (42),

comprising a guide slot in the housing of the lighting fixture for each supporting spring, which possesses opposing supporting edges (211), on which the two supporting flanks (432) of each supporting spring (4) are supported when the cover is within the lighting housing,
comprising a locking device in the lighting housing, by means of which each supporting spring (4) is held when the cover (3) is lowered,
characterised in thatthe cover (3) is connected to the lighting housing (1) on two mutually opposite sides by means of at least two supporting springs (4), that each supporting spring
- is formed from wire,
- possesses angled bearing brackets (411, 411.2), on which the cover (3, 3.2) is pivotably mounted, at the free ends of its supporting arms (41, 41.2), that a guide space (23, 23.1) adjoins the guide slot (231, 231.1) and extends into the lighting housing, that the guide space (23, 23.1) is defined
- by two parallel mutually oppositely arranged lateral walls (21, 21.1), whose spacing b is smaller than the spacing B between the projections (43) of the supporting spring when the cover is inserted,
- by a cover wall (20, 20.1) which extends between the lateral walls (21, 21.1),
- and by a guide wall (11, 22.1) which extends parallel to the cover wall (20, 20.1) and is spaced therefrom at a distance which is somewhat greater than the thickness of the supporting spring, and that at least one hook (201, 201.1) projecting into the guide space serves as a locking device.
2. A holder as claimed in Claim 1, characterised in that the ends of the supporting arms (41,41.2) of the supporting springs (4) resiliently abut upon rebated edges (31.12, 31.22) of the cover.
3. A holder as claimed in Claim 2, characterised in that the cover (3, 3.2) has a V-shaped, upwardly open boundary region having a longitudinal edge (31, 31.2) and that the cover has said longitudinal edge pivotably mounted on the bearing brackets (411, 411.2) of the supporting springs (4, 4.2).
4. A holder as claimed in Claim 3, characterised in that each supporting arm (41.2) of a supporting spring (4.2) possesses a bearing bracket (411.2), which is angled in relation to the longitudinal edge (31.2) of the cover (3.2) and protrudes through a slotted recess (31.20) parallel to the longitudinal edge, and that the end pieces (410.2) of the two supporting arms (41.2) of each supporting spring (4.2) at the ends of the bearing brackets (411.2) are outwardly angled in an opposing manner and parallel to the longitudinal edge (31.2) of the cover (3.2).
5. A holder as claimed in Claim 4, characterised in that the length of the slotted recess (31.20) approximately equals or is smaller than the width (b) between the lateral walls (21.1) of the spring holder (2.1).
6. A holder as claimed in Claim 3,characterised in that the exposed supporting arms (41) of the supporting spring (4) have bearing brackets (411) which are oppositely outwardly angled and parallel to the longitudinal edge (31) of the cover (3), and which are rotatably inserted into bearing pieces (311) of the longitudinal edge (31 ) of the cover (3), which bearing pieces have inlet openings (3110) directed towards one another
7. A holder as claimed in Claim 6, characterised in that between the bearing pieces (31 1 ) the lighting cover (3) possesses blocking lugs (313) which only allow the supporting arms (41) of the supporting spring (4) to be pressed together for the detachment from the bearing pieces (311) in a confined swivel region when the cover has practically not yet swivelled out.
8. A holder as claimed in Claim 7, characterised in that two bearing pieces (511) and one blocking lug (512) respectively form a component of an integral bearing member (5) which is placed at the boundary region of the cover (3), (Fig. 4, 5, 6).
9. A holder as claimed in Claim 7, characterised in that the parts of the longitudinal edge (31) of the cover are curved in order to form the bearing pieces (311), (Fig. 1).
10. A holder as claimed in one of Claims 1 to 9, characterised in that the spring holder (2, 2.1) consists of bright, rust-proof sheet metal and is mechanically and thus electrically connected to the lighting housing (1).
11. A holder as claimed in Claim 10, characterised by a counter wall in the form of two guide walls (22.1), which form part of the spring holder (2. 1) and are angled towards both sides of its cover wall (20.1 ) and have free edges directed towards one another (Fig. 9).
12. A holder as claimed in Claim 10, characterised in that the counter-wall is a wall (11)of the tight- ing housing (1), (Fig. 1).
EP84101340A 1983-02-16 1984-02-09 Means for fixing a pull-down cover in a lighting fixture Expired EP0116909B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84101340T ATE24235T1 (en) 1983-02-16 1984-02-09 HOLDING A LOWERABLE LAMP COVER.

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE3305290 1983-02-16
DE19833305290 DE3305290A1 (en) 1983-02-16 1983-02-16 Holder for a lowerable luminaire cover
DE3317274 1983-05-11
DE19833317274 DE3317274A1 (en) 1983-05-11 1983-05-11 Mount for a lowerable lighting-fitting closure
DE3334803 1983-09-26
DE19833334803 DE3334803A1 (en) 1983-09-26 1983-09-26 Holder of a lowerable luminaire cover

Publications (2)

Publication Number Publication Date
EP0116909A1 EP0116909A1 (en) 1984-08-29
EP0116909B1 true EP0116909B1 (en) 1986-12-10

Family

ID=27190766

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84101340A Expired EP0116909B1 (en) 1983-02-16 1984-02-09 Means for fixing a pull-down cover in a lighting fixture

Country Status (3)

Country Link
EP (1) EP0116909B1 (en)
DE (1) DE3461672D1 (en)
NO (1) NO163506C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0271770A2 (en) * 1986-12-16 1988-06-22 Licentia Patent-Verwaltungs-GmbH Device for attaching a light cover to its enclosure
EP0682209A2 (en) * 1994-05-13 1995-11-15 THORN LICHT GmbH Light unit comprising hanging devices for unhooking the grille
EP0726422A2 (en) * 1995-02-13 1996-08-14 ZUMTOBEL LICHT GmbH Lighting fixture, especially for clean rooms

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0633426A1 (en) * 1993-07-09 1995-01-11 THORN LICHT GmbH Luminaire
DE19505471C2 (en) * 1995-02-17 1999-09-09 Fraenkische Leuchten Gmbh Spring snap lock for attaching a lamp cover to a lamp housing
DE19706500C2 (en) 1997-02-19 2000-11-23 Ridi Leuchten Gmbh Device for attaching a luminaire grid to a luminaire housing
DE10216761B4 (en) * 2002-04-02 2007-07-19 Siteco Beleuchtungstechnik Gmbh Luminaire with friction-locked luminaire component and associated luminaire component
FR2866943B1 (en) * 2004-02-27 2006-07-14 Sli France DEVICE FOR FIXING A LUMINAIRE GRID
US8142048B2 (en) 2008-12-01 2012-03-27 Hubbell Incorporated Lighting assembly having end wall with retaining member
CN106555984A (en) * 2017-01-13 2017-04-05 兰溪市巴士达照明电器有限公司 Convertible holder

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2792245A (en) * 1956-11-29 1957-05-14 Marvin Electric Mfg Company Means for attaching a bezel
US2960361A (en) * 1957-03-11 1960-11-15 Thomas Industries Inc Spring fastener and supplemental support
US3302019A (en) * 1964-09-29 1967-01-31 Smithcraft Corp Incandescent light fixture improvements

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0271770A2 (en) * 1986-12-16 1988-06-22 Licentia Patent-Verwaltungs-GmbH Device for attaching a light cover to its enclosure
EP0271770A3 (en) * 1986-12-16 1989-12-20 Licentia Patent-Verwaltungs-Gmbh Device for attaching a light cover to its enclosure
EP0682209A2 (en) * 1994-05-13 1995-11-15 THORN LICHT GmbH Light unit comprising hanging devices for unhooking the grille
EP0726422A2 (en) * 1995-02-13 1996-08-14 ZUMTOBEL LICHT GmbH Lighting fixture, especially for clean rooms

Also Published As

Publication number Publication date
NO163506C (en) 1990-06-06
NO840323L (en) 1984-08-17
DE3461672D1 (en) 1987-01-22
EP0116909A1 (en) 1984-08-29
NO163506B (en) 1990-02-26

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