US3551617A - Lighting device with supporting ledges and connecting boxes - Google Patents

Lighting device with supporting ledges and connecting boxes Download PDF

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Publication number
US3551617A
US3551617A US829018A US3551617DA US3551617A US 3551617 A US3551617 A US 3551617A US 829018 A US829018 A US 829018A US 3551617D A US3551617D A US 3551617DA US 3551617 A US3551617 A US 3551617A
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US
United States
Prior art keywords
tongs
grounding
contact
rails
switching
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 - Lifetime
Application number
US829018A
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English (en)
Inventor
Heinz Seelbach
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.)
Reininghaus and Co KG
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Reininghaus and Co KG
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Filing date
Publication date
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
    • H01R25/14—Rails or bus-bars constructed so that the counterparts can be connected thereto at any point along their length
    • H01R25/142—Their counterparts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/34—Supporting elements displaceable along a guiding element
    • F21V21/35—Supporting elements displaceable along a guiding element with direct electrical contact between the supporting element and electric conductors running along the guiding element

Definitions

  • the hollow carrying rails being open in lateral direction and conducting wires and a grounding wire are received in the hollow chamber defined by the carrying rails and accessible from the side.
  • Terminal boxes support lighting units and include a head portion received by the carrying rails.
  • the terminal boxes receive a plurality of spring tongs projecting from the head portion and serve in pairs as holding tongs, contact tongs and a grounding tong operatively connectable with the grounding wire, a cam shaft is turnable by means of a switch member sitting on the outside of the terminal box, to transfer all the tongs into an engaging operative and into an inoperative position, respectively.
  • the cam shaft assumes an inoperative and three further operative positions.
  • the first of the three operative positions provides a prelocking position of the holding tongs and a contact position of the grounding tong.
  • the second of the three operative positions provides a final clamping position of the holding tongs, while maintaining the contact position of the grounding tong, and the third of the three operative positions provides, in addition to the positions of the tongs in the second of the three operative positions, a contact engagement of the conducting wires in the carrying rails.
  • the present invention relates to an illuminating device with carrying rails and terminal boxes, in general, and to such illuminating device which includes hollow carrying rails to be secured in, on or spaced apart from a securing face, which car- 'ying rails are open towards one side and receive in their holow space conducting rails accessible from one side and which ire equipped with terminal boxes carrying lighting units, vhich terminal boxes penetrate into thecarrying rails with a etofi head part and each of the terminal boxes being :quipped with a plurality of spring tongs, in pa rticular.
  • the spring tongs projecting laterally from the setoff head an in pairs, serve as holding tongs and contact tongs and are :quipped further with a grounding tong cooperating with a ground wire in the conducting rail, whereby all tongs are transformable into an engagement or an inoperative position by a cam roller switchable by means of a switch member sitting on the outside of the terminal box.
  • Such illuminating devices are particularly applied in large halls, as department stores, museum or the like. They have the advantage, that the terminal boxes for the illuminating devices can beinserted and clamped therein on the hollow carrying rails secured, for instance, at the ceiling of thehall at any position. In connection with this illuminating device, it is even possible to vary a lighting arrangement by releasing, displacing orreclamping the terminal boxes. This case occurs, for example, if the objects of display are subjected to a new arrangement in a museum hall.
  • the known illuminating device of the type mentioned above has in the setoff head part of the terminal box two or two pairs of contact tongs, which can be transferred by rotation of the switch memberfrom its inoperative position within the terninal box into an operative position. They enter then at the end faces of the head part of the terminal boxand reach thus the conducting rails of the carrying rails, whereby the electrical connection to the illuminating device is brought aboutQln the vertical longitudinal center axis, these terminal boxes have a pair of holding tongs, which emerge on opposite sides of the head part and which cooperate with the metallic carrying rail. These tongs serve in the known illuminating'device simultaneously as holding tongs and as grounding contacts. This safety of the terminal boxes in the carrying rails is not satisfactory, because, by lateral pressure, pull or tipping, the terminal boxes can be pressed out in spite of the holding tongs from the carrying rails.
  • This prelocking position means, that the holding tongs enter though in recesses of the hollow carrying rail coordinated thereto, however; they are not yet securely pressed on.
  • One is thereby put into the position, to insert one or a plurality of terminal boxes at first loosely, however, safely, against fallout into'the carrying rails, so, that one can displace the same at will.
  • the electrical connection- is thereby not yet established.
  • the holding tongs serving until now simultaneously as grounding contacts, perform now only the holding tasks, while only the separate grounding tongs, formed as face contacts, serve an electrical protection task.
  • the mentioned arrangement of the switching tongs has thereby'the particularly advantageous effect that, upon insertion of each terminal box into a carrying rail by the grounding tong running ahead, at first a safety grounding is brought about, before the contact tongs become effective, which clamp the illuminating body electrically to the conduit rails.
  • the terminal boxes engage with a setoff head part the carrying rails, and each of which is equipped with a plurality of spring tongs, which projecting laterally from the setoff head portion in pairs serve as holding tongs and contact tongs, as well as are equipped with a grounding tong cooperating in the conduit rail with agrounding conduit, whereby all tongs are transferable into an engaging operating or an inoperative position .each by means of a cam roller switchable by means of a switching member sitting on the outside of the terminal box.
  • the second switching position performing, while maintaining the contact position of the grounding tong with an end clamping position of the holding tongs, and performing the last switching position with additional contact provision of the contact tongs on the conduit rails.
  • FIGS. 1a, 1b, 10, Id and 1e are elevations, partly in section, disclosing different securing possibilities of the illuminating device designed in accordance with the present'invention;
  • FIG. 2 is a schematic elevation of the switching cams pro- 'vided within the. terminal box for the holding tongs, the contact tongs and the grounding tong in a pulled-apart state and in inoperative position;
  • FIG. 3 is a schematic showing of the arrangement disclosed 'in FIG. 2, however, shown in the second switching position;
  • FIG. 4 is a showing of the same structural parts of the terminal box indicating a third switching position
  • FIG. 5 is the same arrangement as shown in FIGS. 2 to 4, however, indicating the last switching position.
  • the illumination device comprises two main parts, namely a supporting rail A and a terminal box B.
  • FIGS. 10, lb, 1c, Id and le disclose how the supporting rail A and the terminal boxes B can be secured in, on or spaced apart from a securing face.
  • FIG. 1a discloses the securing of the supporting rail A below a room ceiling, whereby the terminal box B carries a spot light C.
  • FIGS. lb and lie permit recognition how the supporting rail A can be secured to suspended ceilings.
  • the supporting rail A in accordance with FIG.
  • FIG. 1b has a supplemental profile 11 with a flange Ila each directed in outward direction, which flange 11a can interengage the profile 11 in the manner of a groove and tong in grooves of ceiling plates D.
  • these ceiling plates D are merely mounted on a lateral flange Ila of this supplemental profile 11.
  • FIG. 1d shows a suspension of a supporting rail A and of a terminal box 8 by means of a pendulum tube E and FIG. 1e finally discloses the securing of a supporting rail A to the ceiling.
  • the supporting rail as shown in FIGS. 10, 1b, 10, Id and 1e, comprises, in the embodiment shown by example only, two rail parts A and II of which the rail part A has a generally U- shaped or omega-shaped section.
  • the rail part A assumes in its inner hollow space accessible from below by a longitudinal slot two rails of insulating material 12 and 13, for instance, of synthetic material, each of which has a longitudinal groove 12a, which points towards each other and to a vertical longitudinal center plane of the 'supportingrail part A and eacliof which receives a conduit rail 14.
  • These conduit rails 14 extend over the entire length of the supporting rail part A and are connected to the current network and thus feed current.
  • the supporting rail part A has a groove l5 passing through in longitudinal direction.
  • the two grooves 15 point towards each other and to the vertical longitudinal center plane of the supporting rail part A, respectively.
  • the supporting rail profile 11 serving as a cover covers the supporting rail part A in' upward direction.
  • the supporting rail parts A and 11 are connected together, for instance, by screws (not shown).
  • Each terminal box B hasa generally parallelopiped basic configuration, however, is atits upper head end 17 cooperating with the supporting rail A'setoffsteplike as to its width and has thereby in the head part 17 a narrower width than that of the main part.
  • bores are providedthrough, which bores end parts of, for instance, five tongs 19, 20, 21, 22 and 23, can project from the inside towards the outside FIGS. 2 to 5).
  • the two outer tongs 19 and 20 serve as so-called holding tongs.
  • the holding tongs 19 and 20 have, as can be recognized from FIGS. 2 to 5, an angularly shaped end portion, with which they cooperate with the two grooves 15 in case the terminal box B is inserted into the supporting rail part A.
  • the supporting rail A comprises, for instance, anodized light metal
  • these contact faces on the supporting rail part A become electrically conducting by removal of the anodized layer.
  • V 4 H Within the range of the outer holding ton gs 19 and 20 and the grounding fiat contact tong 21 disposed in the center, in the example, two additional tongs 22 and 23 are provided, which serve as contact tongs and cooperate with both conducting rails 14 of the supporting rail A.
  • the contact tongs 22 and 23 are disposed on the side of the terminal box- B remote from the holding tongs I9 and 20 This has the purpose of dividing uniformly the occurring forces upon later spreading apart of the contact tongs 22 and 23 and of holding tongs 1'9 and 20.
  • the contact tongs 22 and 23 are exactly as the holding tongs 19 and 20 and contrary tothe grounding flat contact 21 equipped with outwardly directed angular formations.
  • each terminal box B has at its bottom a terminal mouth (not shown) for the feeding wires 16 to the illuminating body C (see FIG. 1a).
  • a cam roller 28 is provided in the terminal box B, which cam roller 28 has a special switching cam 29, 30, 31, 32 and 33 for each of the tongs 1Q, 20, 21, 22 and 23, respectively.
  • the cam roller 28 is rotatable from the outside by means of a switching member 34 and in particular into four different positions which can be locked in a known manner, which positions are indicated in FIGS. 2 to 5 of the drawings.
  • FIGS. 2 to 5 are chosen such, that for each tong and for each switching cam of the cam roller a particular showing has been chosen, in order to improve the overall view of the structure. It is necessary to visualize the arrangement such, that all individual showings must be turned for 90 out of 5 the plane of the drawing sheet, whereby the point-dotted line is the joint switching cam axis 28 for all switching cams 29, 30, 31, 32 and 33.
  • the cam roller 28 with its switching earns 29, 30, 31, 32 and 33 is disposed in a zeroor inoperative position.
  • all switching cams have their lowest height relative to the cam roller axis 28.
  • the holding tongs 19 and 20, the grounding tong 21 and the contact tongs 22 and 23 are disposed thereby and due to their self-resiliency such at their switching cams 29, 30, 31, 32 and 33, that neither the grounding tong 21 nor the holding tongs 19 and 20 and also not the contact tongs 22 and 23 project laterally out of the head part 17 of the terminal box B.
  • the head part 17 of the terminal box B can be inserted without any difficulty into the slot of the supporting rail part A.
  • the cam roller 28 In the second position (FIG. 3), the cam roller 28 is switched forward for one switching step.
  • the cams 29 and 33 of the two holding tongs l9 and 20 and the switching cam 31 of the grounding tong 21 have advanced so far, that the grounding tong 21 approaches the blank inner face of the supporting rail A, whereby the protective grounding is brought about.
  • the two holding tongs l9 and 20 enter partly into the grooves of the supporting rail A, however, only to such extent, that between the front end edges of the angularly shaped end parts of the holding tongs l9 and and the base of the groove 15 still some free space remains.
  • the switching position according to FIG. 3 is thus the terminal box B grounded for protection.
  • the supporting rail A it can still be at will moved back and forth, in order to be able to be brought to any desired position of the supporting rail.
  • the cam roller 28 has again performed a switching step with the consequence that, while retaining the protective grounding by the grounding tong 21, the two holding tongs 19 and 20 can now be transferred into their end locking position.
  • the holding tongs 19 and20 are pressed forcibly into the base of the grooves 15, whereby the terminal boxes B are reliably locked against any displacement within the supporting rail A.
  • An illuminating device comprising;
  • hollow carrying rails to be secured in, on or at a distance from a securing face
  • hollow carrying rails being open in lateral direction and defining a hollow chamber
  • At least one terminal box supporting at least one lighting unit and including a head portion received by said carrying rails;
  • terminal box receiving a plurality of spring tongs projecting from said head portion and serving in pairs as holding tongs, contact tongs, and at least one grounding tong operatively connectable with said electrical grou nding conduit means;
  • a cam shaft means turnable by means of a switching member sitting on the outside of said terminal box, transfer all said tongs into an engaging operative and into an inoperative position, respectively;
  • cam shaft means assuming an inoperative and three further operative positions
  • the third of said three operative positions providing, in addition to the positions of said tongs in said second of said three operative positions, a contact engagement of said contact tongs with said conducting wires in said carry rails.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Tumbler Switches (AREA)
US829018A 1968-05-29 1969-05-29 Lighting device with supporting ledges and connecting boxes Expired - Lifetime US3551617A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681764385 DE1764385B1 (de) 1968-05-29 1968-05-29 Beleuchtungsvorrichtung

Publications (1)

Publication Number Publication Date
US3551617A true US3551617A (en) 1970-12-29

Family

ID=5697958

Family Applications (1)

Application Number Title Priority Date Filing Date
US829018A Expired - Lifetime US3551617A (en) 1968-05-29 1969-05-29 Lighting device with supporting ledges and connecting boxes

Country Status (8)

Country Link
US (1) US3551617A (cs)
JP (1) JPS4926673B1 (cs)
AT (1) AT284273B (cs)
CH (1) CH490640A (cs)
DE (1) DE1764385B1 (cs)
FR (1) FR2009538A1 (cs)
GB (1) GB1226895A (cs)
NL (1) NL163011C (cs)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9130327B2 (en) 2013-06-18 2015-09-08 Trinity, Llc Power assembly for display
USD769508S1 (en) * 2015-03-30 2016-10-18 Santa & Cole Neoseries S.L. Lamp

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5329463U (cs) * 1976-08-12 1978-03-13
JPS59119874U (ja) * 1983-01-31 1984-08-13 渡辺　章治 ゴルフ練習機
DE9400443U1 (de) * 1994-01-12 1994-06-01 Klaus Sigl Licht GmbH, 80469 München Anschlußeinrichtung
DE19638863C2 (de) * 1996-09-23 2002-11-14 Wilfried Poellet Arbeitsplatzbeleuchtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2743423A (en) * 1952-07-12 1956-04-24 Wiremold Co Electrical wiring and connection assembly
US3150908A (en) * 1962-03-02 1964-09-29 Swivelier Company Inc Means for locking fixtures to busway
GB1000926A (en) * 1963-05-21 1965-08-11 Lightolier Inc Improvements in or relating to closure devices for electric power distribution tracks
US3337835A (en) * 1965-02-03 1967-08-22 Wiremold Co Electric fitting

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9130327B2 (en) 2013-06-18 2015-09-08 Trinity, Llc Power assembly for display
USD769508S1 (en) * 2015-03-30 2016-10-18 Santa & Cole Neoseries S.L. Lamp

Also Published As

Publication number Publication date
DE1764385B1 (de) 1971-02-11
GB1226895A (cs) 1971-03-31
JPS4926673B1 (cs) 1974-07-11
CH490640A (de) 1970-05-15
FR2009538A1 (cs) 1970-02-06
NL6907193A (cs) 1969-12-02
NL163011C (nl) 1980-07-15
AT284273B (de) 1970-09-10

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