EP0612122A2 - Système pour la réalisation de douilles de lampe avec socle avec insert interne incorporé - Google Patents

Système pour la réalisation de douilles de lampe avec socle avec insert interne incorporé Download PDF

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Publication number
EP0612122A2
EP0612122A2 EP94830051A EP94830051A EP0612122A2 EP 0612122 A2 EP0612122 A2 EP 0612122A2 EP 94830051 A EP94830051 A EP 94830051A EP 94830051 A EP94830051 A EP 94830051A EP 0612122 A2 EP0612122 A2 EP 0612122A2
Authority
EP
European Patent Office
Prior art keywords
shells
contacts
receptacles
parts
thread
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Withdrawn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
EP94830051A
Other languages
German (de)
English (en)
Other versions
EP0612122A3 (en
Inventor
Luca Rossignoli
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 EP0612122A2 publication Critical patent/EP0612122A2/fr
Publication of EP0612122A3 publication Critical patent/EP0612122A3/de
Withdrawn legal-status Critical Current

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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
    • 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
    • H01R33/22—Two-pole devices for screw type base, e.g. for lamp
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/502—Bases; Cases composed of different pieces
    • H01R13/504—Bases; Cases composed of different pieces different pieces being moulded, cemented, welded, e.g. ultrasonic welding, or swaged together

Definitions

  • the invention relates to a system for realizing lamp holders with a body that has a seat for inserting the bulb base and receptacles for the base contacts and a means for clamping the cable (cable strain relief) or for attaching a threaded shaft or a so-called stem or the like . forms.
  • this new type of lamp holder allows a better industrial manufacture of the product with greater yield and corresponding advantages for the end user, particularly in the industrial sector.
  • the body consists essentially of two essentially symmetrical parts or half-shells which can be joined and welded to one another along a longitudinal plane of symmetry, holding between them the parts required in the interior of the lamp holder and the means for inserting the incandescent lamp and, if appropriate, for hold the cable in the manner of a cable clamp (cable strain relief).
  • the two parts or half shells can be ultrasonically welded. Instead, however, other connecting means such as adhesives or solvents or the like. Or mechanical systems in the manner of expansion pins or conical pins or the like can also be provided.
  • the threads are partially formed on each of the half-shells and can have bevels or interruptions in the area of the connection plane in order to connect to the screwable component ensure for which they are intended. In this way, it can be excluded that burrs form at the welding points, which hinder the correct screwing in of the component.
  • edges to be joined and welded together can have projections and seats as reference elements for the two to be joined together Have half-shells and the joining and welding.
  • Ventilation openings can advantageously be provided in the two half-shells and possibly in the area of the connecting edges and interruptions can be provided in the inner thread, which allow air circulation for the ventilation in order to ensure cooling of the lamp holder.
  • the two half-shells are shaped so that they either form a seat that can hold the insert with clamps and contacts when assembled, or receptacles for inserting and holding contacts directly attached to the conductors, preferably in the form of lamellar contacts.
  • Profiles can be formed on the two half-shells during injection molding, which form a cable strain relief when they are joined together.
  • seats for snapping a ring with a threaded hole for screwing in a tubular holder can be integrally formed on the two half-shells.
  • profiles can be formed, which form a thread or a snap fit for attaching a tubular holder ("handle"), which can also be attached by joining and / or with the aid of adhesives or the like.
  • the two half-shells can have steps which, when put together, form an annular stop for an external component.
  • FIGS. 1 to 9 of the accompanying drawings two substantially symmetrical half-shells 1 and 3, which are produced as injection-molded parts, are provided to form a lamp holder, which are designed such that they are joined together - along an axial axis of symmetry - a lamp holder form, the connection plane containing the axis of the mounted lamp holder.
  • the connection takes place in the area of the contact edges, for example by means of continuous projections and grooves corresponding to these, which can be complementary.
  • the half-shell has an edge 11 and the half-shell 3 has a corresponding groove 13 and a projection 23, so that when the two half-shells 1 and 3 are joined together, the edge or the projection 11 can penetrate into the groove 13 and the protrusion or edge 23 runs along edge 11.
  • the edges or projections 11 and 23 and the grooves 13 extend in the region of the cup-shaped part of the two half-shells and in the cylindrical part in the region of the base for the assembly of the incandescent lamp.
  • the two half-shells are designed such that they form a lamp holder with a stop 33 on which a lampshade, such as the lampshade 34 (FIG. 1), can be supported, which has a ring nut 36 is held on the stop 33.
  • the ring nut 36 can be screwed onto an external thread 38 which is formed by the two half shells when they are connected to one another.
  • the two half-shells 1, 3 In the interior of the zone corresponding to the thread 38, the two half-shells 1, 3 have internal thread segments 40, 42. These sections are spaced apart and, like the thread 38, are produced during the injection molding of the individual half-shells, without the need for organs for unscrewing the pressed part be, as they are required in conventional systems for the realization of lamp holders.
  • projections 44 are also formed, which form seats for the transversal — ie perpendicular to the axis of the assembled lamp holder complex — insertion of an insert part 50, which carries the terminals and the contacts for the bulb base. This insert part 50 carries the contacts 52 for the base and the terminals 54 for the electrical conductors.
  • the projections 44 for receiving the insert part 50 are shaped such that they fix the angular position of the insert part 50 and that an interruption in the support and thus a passage is formed between the cylindrical wall of the half-shells and the insert part 50 itself. 8 and 9, these passages are denoted by 56. Passages 58 are formed between the individual segments 40 and 42 of the internal thread for the base. The passages 56 and 58 allow air to circulate through slots 62 formed during injection molding, such as slots 60, and through slots formed by depressions 62 extending along the connecting edges of the two half-shells in the region of the extended cup-shaped part of the two half-shells of the lamp holder be able to penetrate into the inside of the lamp holder (formed by the two half-shells joined together).
  • the internal thread of the segments 40 and 42 is at a distance from the cylindrical wall of the corresponding section of the half-shells, so that the thread of the bulb socket is also at a distance from these cylindrical walls and the passages 58 are thereby formed. Air circulation is thus possible, the air being able to enter or exit through the slots 60 and 62 and run from the passages 56 and the passages 58 to the end of the lamp holder in the end region of the external thread 38.
  • the ventilation that can be achieved in this way ensures adequate internal cooling even when relatively powerful light bulbs are used and heat is thus generated in the area of the lamp holder. This avoids possible malfunctions that often occur due to overheating in conventional lamp holders.
  • the slots 60 and the slots formed by the depressions 62 and the passages 58 and 56 can easily be formed during the injection molding of the two half-shells, without the shapes being particularly complicated.
  • the manufacture of the threads is also extremely simplified by the shape of the lamp holder from two essentially symmetrical half-shells.
  • the two half-shells have an integral part in the apex region of the widening cup of the lamp holder with them formed receptacle 68 which forms a cable strain relief when the two half-shells are joined together.
  • This cable strain relief serves to block the cable, i.e. the sheath of the conductors mounted on the terminals 54 (in accordance with the applicable standard regulations).
  • the cable is attached together with the insert part 50, on the terminals 54 of which the conductors are already preassembled.
  • the joining of the two half-shells therefore not only causes the insertion of the insert 50 into the seats formed by the projections 44 but also the blocking of the cable C by the profiles 68 of the two half-shells.
  • These profiles 68 have projections which press on the outer surface of the cable C and thereby form the cable strain relief.
  • the two half-shell components 1 and 3 are joined together and connected to one another in any suitable manner with the aid of the profiles formed by the projections, that is to say the edges 11, 23 and grooves 13, using either an ultrasound welding process or other welding processes and / or optionally adhesives or solvents or other methods known per se, which also take into account the material chosen for the injection molding of the half-shells.
  • the joints can also be carried out at discrete points instead of along more or less continuous edges of the joint profiles of the two half-shells.
  • the thread 42 and the thread 38 which may be provided advantageously each form bevels 42S and 38S along the connection plane in the thread end region in order to exclude faults which are caused by welding burrs or possible slight changes in the relative position of the half-shells etc.
  • an internal thread can be provided in the corresponding seat, which consists of two segments produced by injection molding, which form the complete thread after the two half-shells have been joined together.
  • This thread is used to screw in a tubular shaft, for example a so-called "holding handle" for a lamp holder.
  • a threaded shaft or stem is designated by T in FIG. 12 described below.
  • This threaded shaft T has an external thread FT, which can be screwed into the thread formed in the seats 68 in FIGS. 2 and 3.
  • suitable means can be provided to block the thread FT of the shaft T on the lamp holder, for example an adhesive or a transverse clamping screw or another suitable means.
  • FIGS. 10 and 12 An embodiment variant is shown in FIGS. 10 and 12. This relates to the design of the lamp holder, in which no side support stop 33 is provided here. The variant also relates to the mounting system for a tubular shaft, such as the shaft T of FIG. 12.
  • a thread 138 is provided on the outside of the (essentially cylindrical) lamp holder, which corresponds to the thread 38, but over the entire length The length of the body of the lamp holder formed by the two half-shells runs.
  • the edges and grooves which correspond to the edges and grooves 11, 23 and 13 of the previous example extend in this embodiment along the connecting edges of the two half-shells.
  • a seat with projections 144 is provided for the insert 50, which is again an insert of known type with contacts 52 and terminals 54.
  • Slots 160 are also provided which correspond to slots 60 and which are oriented such that they enable the half-shells to be removed from the mold. They have the same function as the slots 60. Slots can also be provided in this embodiment which, like the slots 62, are formed by depressions.
  • a snap connection with a threaded ring 220 is provided for mounting a tubular shaft or a stem such as the stem T of FIG. 12, which has elastic lugs 222 with retaining claws which can be connected to the mounted lamp holder .
  • recesses 224 are used, which are formed during the injection molding of the two half-shells in the region of the zones designated by 1224.
  • suitable profiles are provided for protecting the cable against possible use, which are identified by 226.
  • opposing ring nuts such as the ring nut 230 of FIG. 12, can be provided for holding lampshades or the like.
  • all types of lamp holders currently on the market can be produced on the basis of the invention, namely those with a body which is threaded over its entire length, those with a smooth body, those with a body which has a stop for a lampshade, which is held with a ring nut screwed onto a thread (body with half thread and stop) and others.
  • FIGS. 13 to 19 show an embodiment which has a similar concept to the embodiment of FIGS. 1 to 9, but differs from it with regard to the connection system for the contacts for the bulb socket.
  • the contacts are not carried by an insert part held between the two half-shells, rather they are located in receptacles provided specifically for each of the contacts, and are held in place by the joining of the two shells in the correct position in which they are with the base the light bulb interact.
  • the two contacts can be lamella-like and can be connected to the stripped ends of the conductors by means of so-called "Faston" terminals or the like by means of quick-connect systems.
  • the two half-shells designated 301 and 303 are connected to one another by ribs 311 and corresponding grooves 313 in order to produce a centered connection between the two half-shells 301 and 303 in the manner already described for the above case.
  • the two half-shells form in the region of projections which protrude from the walls of the two half-shells and whose design is adapted to the requirements of transfer molding, internal thread segments 320 and 322 which are arranged at a distance from one another.
  • the end regions of the two thread segments 322 adjoining the connection plane between the two half-shells 301 and 303 are chamfered in the region of the connection plane, as indicated by 322A.
  • the interruptions in the thread 320, 322 of the base also offer the possibility of creating ventilation passages in the area of the seat for receiving the bulb base.
  • One of the two half-shells, namely the half-shell 301, has a projecting part 301 E which projects beyond the connection plane, two slit-like receptacles 324 and 326 being formed in the region of two widenings of this projecting zone, which advantageously each have an arcuate shape in a central position Have deflection, as can be clearly seen in FIG. 13.
  • a lamellar contact 328 or 330 can be inserted into each of these slot-shaped receptacles 324 and 326, one of which forms a side contact and the other, which is angled toward the center of the lamp holder, forms a central center contact for the bulb base.
  • the two lamellar contacts 328 and 330 are connected to the stripped ends of the conductors C of the cable CV by means of a faston of the so-called "Faston" type, generally designated 332 in FIG can be held in a suitable manner between the two half-shells in the embodiment described above.
  • the other of the two half-shells ie the half-shell 303, has projections 334 and 336, which protrude from the inner surface of this half-shell 303 and are joined together Arrange the two half-shells in front of the slot-shaped receptacles 324 and 326.
  • the slat contacts 328 and 330 are fixed after being inserted into the slot-shaped receptacles 324 and 326 and after the two half-shells 301 and 303 have been joined together to prevent them coming out laterally from the slot-like receptacles, while the slat contacts are displaced in the direction of the slots 324 and 326 is prevented by the deflections provided in the middle positions and recognizable specifically in FIG. 13.
  • the conventional insert part provided in the previously described embodiment, which is held by the two half-shells is unnecessary, and the assembly process is further simplified.
  • Each of the two half-shells has, in a central and symmetrical position, partition walls 328 and 340 which isolate the bare metal parts of the two clamps 323 from one another and thus prevent a possible short circuit due to incorrect positioning of the electrical parts in the half-shells.
  • Suitable claws which are formed during the injection molding in the two half-shells, in particular in the half-shell 301, ensure the strength of the inner projections of the half-shells, in particular the projections 302, in which the receptacles 324, 326 are formed, and the projections in which the threaded parts 320 and 322 are designed for the bulb base.
  • the two half-shells 301 and 303 can have an external thread, generally designated 350, for screwing on a ring nut for mounting a lampshade or the like.
  • the parts of these threads 350 can also have suitable bevels 352 in the region of their ends, which open in the connecting plane between the two half-shells, which, like the inner bevels 322A, serve to remove obstacles for screwing in, which may indicate inaccuracies or possibly Protrusions and burrs that can arise during injection molding or when joining together.

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  • Protection Of Plants (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Packaging Frangible Articles (AREA)
EP94830051A 1993-02-15 1994-02-11 System for the realisation of lampholders with built-in internal insert. Withdrawn EP0612122A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITFI930020 1993-02-15
IT93FI000020A IT1265840B1 (it) 1993-02-15 1993-02-15 Sistema per realizzare porta-lampade con virola a "frutto" interno incorporato.

Publications (2)

Publication Number Publication Date
EP0612122A2 true EP0612122A2 (fr) 1994-08-24
EP0612122A3 EP0612122A3 (en) 1996-01-10

Family

ID=11350315

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94830051A Withdrawn EP0612122A3 (en) 1993-02-15 1994-02-11 System for the realisation of lampholders with built-in internal insert.

Country Status (2)

Country Link
EP (1) EP0612122A3 (fr)
IT (1) IT1265840B1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4432302A1 (de) * 1994-09-10 1996-03-14 Murjahn Kg Vlm In ein Leuchtengehäuse einsetzbare Lampenfassungsmontierung
DE29705478U1 (de) * 1997-03-27 1997-07-24 Display Partner Gmbh, 63829 Krombach Einrast-Klappring zur Montage von Schraubfassungen für Lampen der Sockelgrößen E 27 und E 14 und anderer
DE19612279A1 (de) * 1996-03-28 1997-10-02 Murjahn Kg Vlm Gehäuse, insbesondere Fassungsgehäuse für Glühlampen mit Schraubsockel sowie Verfahren zur Herstellung eines derartigen Gehäuses und Vorrichtungen zur Durchführung des Verfahrens
WO2010043501A1 (fr) * 2008-10-15 2010-04-22 Lapp Engineering & Co. Connecteur enfichable

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH100310A (de) * 1922-02-14 1923-07-16 Vormbaum Wilhelm Zweiteilige Glühlampenfassung.
FR983725A (fr) * 1949-03-26 1951-06-27 Douille électrique
US4184734A (en) * 1977-05-03 1980-01-22 Ab Coripen Lampholder
GB2118380A (en) * 1982-04-14 1983-10-26 Vero Electronics Ltd An improved lampholder
CH674321A5 (en) * 1987-10-12 1990-05-31 Moos Stahl Ag Method to produce split anchor bolts - makes anchor in two halves by rolling with grooves for bonding agent and rolled-on oblique ribs forming thread when halves put together

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4432302A1 (de) * 1994-09-10 1996-03-14 Murjahn Kg Vlm In ein Leuchtengehäuse einsetzbare Lampenfassungsmontierung
DE19612279A1 (de) * 1996-03-28 1997-10-02 Murjahn Kg Vlm Gehäuse, insbesondere Fassungsgehäuse für Glühlampen mit Schraubsockel sowie Verfahren zur Herstellung eines derartigen Gehäuses und Vorrichtungen zur Durchführung des Verfahrens
DE19612279C2 (de) * 1996-03-28 1998-07-09 Murjahn Kg Vlm Gehäuse, insbesondere Fassungsgehäuse für Glühlampen mit Schraubsockel sowie Verfahren zur Herstellung eines derartigen Gehäuses und Vorrichtungen zur Durchführung des Verfahrens
EP0798820A3 (fr) * 1996-03-28 1998-12-16 VLM-W. Murjahn GmbH & Co. Douille, en particulier douille pour une lampe à vis ainsi que le procédé de fabrication d'une telle douille et le dispositif de mise en oeuvre de ce procédé
DE29705478U1 (de) * 1997-03-27 1997-07-24 Display Partner Gmbh, 63829 Krombach Einrast-Klappring zur Montage von Schraubfassungen für Lampen der Sockelgrößen E 27 und E 14 und anderer
WO2010043501A1 (fr) * 2008-10-15 2010-04-22 Lapp Engineering & Co. Connecteur enfichable

Also Published As

Publication number Publication date
EP0612122A3 (en) 1996-01-10
ITFI930020A1 (it) 1994-08-15
IT1265840B1 (it) 1996-12-12
ITFI930020A0 (it) 1993-02-15

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