EP0177464A2 - Elektrische und magnetische Sicherheitsfassung für elektrische Glühlampen - Google Patents

Elektrische und magnetische Sicherheitsfassung für elektrische Glühlampen Download PDF

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Publication number
EP0177464A2
EP0177464A2 EP85830250A EP85830250A EP0177464A2 EP 0177464 A2 EP0177464 A2 EP 0177464A2 EP 85830250 A EP85830250 A EP 85830250A EP 85830250 A EP85830250 A EP 85830250A EP 0177464 A2 EP0177464 A2 EP 0177464A2
Authority
EP
European Patent Office
Prior art keywords
lampholder
bulb
contact
electric
magnetic
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.)
Withdrawn
Application number
EP85830250A
Other languages
English (en)
French (fr)
Other versions
EP0177464A3 (de
Inventor
Fabio Angeli
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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Publication of EP0177464A2 publication Critical patent/EP0177464A2/de
Publication of EP0177464A3 publication Critical patent/EP0177464A3/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/05—Two-pole devices
    • H01R33/18—Two-pole devices having only abutting contacts

Definitions

  • the present invention relates to electric and mechanical connection caps which are complementary for electric bulbs, and more particularly it relates to an improved safety electric and magnetic cap between a bulb and a lampholder.
  • a further object of this invention is that of realizing a bulb-lampholder connection cap in which, more particularly, said lampholder gives maximum safety in operation both in hot and neutral wire supply mains (for instance 110 Volt) as well as in two hot-wires supply mains (for instance 220 Volt), as a result of the inaccessibility of the two terminals from the outside, except for the two corresponding bulb terminals.
  • the objects outlined above are realized in the present invention by means of a safety electric. and magnetic connection cap between a lampholder and an electric bulb, in which the lampholdercon- sists of an insulating block with an upper disc, a number of electric contact reeds, connected to the supply terminals, ending below said disc in correspondence to proper holes.
  • the bulb shows a base comprising a cylindrical sleeve and a pin, or otherwise according to a variant of this embodiment two pins, which are connected to the terminals of the bulb filament and are designed to come into electric contact with the contact reeds of the lampholder.
  • Interchangeable magnetic means are provided on thelampholder and on the bulb base, said means cooperating with one another for realizing the mechanical and electric coupling between the lampholder and the bulb.
  • the contact reeds of the lampholder are always in a safety position which is out of the reach of fingers.
  • said lampholder is seen to comprise a supporting block 10 bearing an upper disc 11, which support consists of an insulating material.
  • Terminals 13 and 14 for fastening or clamping the electrical wires of the supply mains are housed in said block 10 accoraing to a known manner.
  • a hole 18 is provided at the center of said disc 11.
  • Two contact reeds 15 and 16 project from the terminals 13 and 14 the reed 15 projects with its end 15a from the rim of said disc 11, whereas reed 16 extends up to the space below hole 18 of said disc 11.
  • the separation diaphragm 12 makes the insulation of the two contact reeds 15 and 16 easier in the space.
  • the contact reeds 15 and 16 are made up of an elastic metallic conductive material and they are bent so as to aid the elasticity of the material itself and to keep them in the position shown in Figure 1.
  • small separate springs can be employed (not shown in the drawings) for obtaining this aid action on the elasticity of the material.
  • Two small magnets 19 and 20 are embodied within said disc 11, the function of such magnets being shown in the following.
  • the bulb shows a ferromagnetic metallic base consisting of an outside sleeve 21 and an annular inside diaphragm 22, which base is assembled on the bulb by means of the common insulating adhesive cement 23.
  • the two terminals of the bulb filament are connected respectively to the outside sleeve 21 of the base and to a projecting central pin 17.
  • FIG 2 in which the outside common components of the lampholder are also shown, shows the bulb in the operating position,. with the outside sleeve 21 of the bulb in reliable, good contact with the lampholder reed 15 and with the central pin 17 passing through the hole 18 and in reliable, good contact with the lampholder reed 16.
  • Figure 4 shows the fact that said reed 15 can also be realized as comprising a terminal part 15b bent downwards, so as to obtain a surface contact with the sleeve 21 and not only a rim contact as shown in Figure 2.
  • Figure 5 shows an embodiment of the present invention in which two almost identical reeds 23 and 24 are provided in the lampholder, said reeds cooperating with two holes provided in the upper disc 11.
  • the bulb base in itself, shows two pins25 and 26 connected to the filament terminals and cooperating with the respective reeds 23 and 24 through the holes of the disc 11.
  • the base of the bulb as well as the lampholder are to be or coordinated shapes, for instance elliptical shapes, or otherwise they must have quick geometric coupling devices, for instance of the groove-rib type or of the groove-tab type and the like.
  • FIG. 6 A further embodiment is shown in Figures 6 and 7, in which embodiment the lampholder shows a disc 11 bearing a central hole 30 and a peripheral hole 31.
  • a contact reed 27 is provided, which is connected to the terminal connection 14 and cooperates with the central hole 30 of disc 11.
  • the contact reed 28 connected to the terminal connection 13 bears a ferromagnetic material pin 29 cooperating with the peripheral hole 31 of the disc 11 and having a rest position as that shown by dotted lines in Figure 6.
  • the pin 29 in such a position does not project from the upper surface of the disc 11.
  • the bulb base consists in that case also of a sleeve 31 bearing a central annular diaphragm, but such base is made up of magnetic material and it cooperates with ferromagnetic strips 33 and 34 fastened within the lampholder disc 11 for obtaining the locking of the mechanical coupling between the bulb and the lampholder, and cooperating also with the ferromagnetic pin 29 which is attracted into the position shown by the full line of Figure 6, where it is in contact with the annular diaphragm 22 of said sleeve 32.
  • the reeds are per se elastic but they can be assisted by the action of supplementary springs.
  • the magnets positions can also be inverted, introducing suitable adaptions to be designed at any time easily by those who are skilled in the art.
  • Figure 8 shows an adapter operating according to any embodiment of the present invention with possible suitable obvious changes, for making it possible to use a bulb of the traditional or normal type with any lampholder realized according to the present invention.
  • the central pin 35 of said adapter is in an insulated condition because of its outside envelope 36 which shows a lower part consisting of a cylindrical sleeve, as also occurs in the case of sleeves 21 and 32 of the preceding embodiments, as well as an upper part which is threaded for making it possible to screw down the same the threaded base of any traditional bulb.

Landscapes

  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Connecting Device With Holders (AREA)
EP85830250A 1984-10-05 1985-10-03 Elektrische und magnetische Sicherheitsfassung für elektrische Glühlampen Withdrawn EP0177464A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT4896184 1984-10-05
IT48961/84A IT1178031B (it) 1984-10-05 1984-10-05 Perfezionamento negli attacchi elettrici e magnetici di sicurezza per lampade elettriche

Publications (2)

Publication Number Publication Date
EP0177464A2 true EP0177464A2 (de) 1986-04-09
EP0177464A3 EP0177464A3 (de) 1988-01-20

Family

ID=11269180

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85830250A Withdrawn EP0177464A3 (de) 1984-10-05 1985-10-03 Elektrische und magnetische Sicherheitsfassung für elektrische Glühlampen

Country Status (2)

Country Link
EP (1) EP0177464A3 (de)
IT (1) IT1178031B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT393185B (de) * 1988-05-03 1991-08-26 Treichl Manfred Lampenfassung
DE9305206U1 (de) * 1993-04-06 1993-10-07 Kurpiers, Thomas, 37269 Eschwege Glühkörper mit Magnethaftung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1111697A (fr) * 1954-09-23 1956-03-02 Ile D Etude Des Inv S Laurella Fixation perfectionnée pour contacts électriques
US3144527A (en) * 1961-09-13 1964-08-11 Manuel J Tolegian Magnetic electrical coupling

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT393185B (de) * 1988-05-03 1991-08-26 Treichl Manfred Lampenfassung
DE9305206U1 (de) * 1993-04-06 1993-10-07 Kurpiers, Thomas, 37269 Eschwege Glühkörper mit Magnethaftung

Also Published As

Publication number Publication date
EP0177464A3 (de) 1988-01-20
IT1178031B (it) 1987-09-03
IT8448961A0 (it) 1984-10-05

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