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WO2008141630A2 - Culot de lampe pour une lampe électrique - Google Patents

Culot de lampe pour une lampe électrique Download PDF

Info

Publication number
WO2008141630A2
WO2008141630A2 PCT/DE2008/000859 DE2008000859W WO2008141630A2 WO 2008141630 A2 WO2008141630 A2 WO 2008141630A2 DE 2008000859 W DE2008000859 W DE 2008000859W WO 2008141630 A2 WO2008141630 A2 WO 2008141630A2
Authority
WO
WIPO (PCT)
Prior art keywords
lamp
plastic
base
melting
section
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.)
Ceased
Application number
PCT/DE2008/000859
Other languages
German (de)
English (en)
Other versions
WO2008141630A3 (fr
Inventor
Peter Helbig
Alexander Vogel
Andreas Koch
Karl-Heinz Quadfasel
Gottfried W. Ehrenstein
Simon Amesoder
Mike Szameitat
Matthias Scholz
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.)
Hubert Stueken & Co KG GmbH
Schempp und Decker Praezisionsteile und Oberflaechentechnik GmbH
Osram GmbH
Friedrich Alexander Universitaet Erlangen Nuernberg
Original Assignee
Hubert Stueken & Co KG GmbH
Schempp und Decker Praezisionsteile und Oberflaechentechnik GmbH
Osram GmbH
Friedrich Alexander Universitaet Erlangen Nuernberg
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 DE102007023638A external-priority patent/DE102007023638B4/de
Application filed by Hubert Stueken & Co KG GmbH, Schempp und Decker Praezisionsteile und Oberflaechentechnik GmbH, Osram GmbH, Friedrich Alexander Universitaet Erlangen Nuernberg filed Critical Hubert Stueken & Co KG GmbH
Publication of WO2008141630A2 publication Critical patent/WO2008141630A2/fr
Publication of WO2008141630A3 publication Critical patent/WO2008141630A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/42—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp
    • H01K1/46—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp supported by a separate part, e.g. base, cap
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1657—Making multilayered or multicoloured articles using means for adhering or bonding the layers or parts to each other
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
    • H01J5/54—Means forming part of the tube or lamps for the purpose of providing electrical connection to it supported by a separate part, e.g. base
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/42—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1671—Making multilayered or multicoloured articles with an insert
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders

Definitions

  • the invention is based on a lamp base for an electric lamp, in particular for a motor vehicle headlight lamp, with a plastic base part.
  • the document DE 198 55 412 Al discloses a vehicle headlamp with a metal-plastic base, wherein L-shaped tabs are received in a plastic base part.
  • a plastic base part On the plastic base part is a silicone sealing ring.
  • high-temperature-resistant plastic such as PPS (polyphenylene sulfides).
  • PPS polyphenylene sulfides
  • connection sections in which the lamp cap is electrically connected, protruding sections such as latching lugs are therefore at risk of fracture.
  • the additional necessary sealing ring which is preferably made of silicone, manufactured and assembled as a separate component, which leads to additional manufacturing effort.
  • the plastic base is often internally provided with a Dichtverguss for sealing the contact lugs, whereby an additional Verg tellmaschine is necessary.
  • the object of the present invention is to provide a lamp base for an electric lamp and a method for producing a lamp base, in which thermal and mechanical requirements for the lamp base are taken into account and a simple production process is possible.
  • a lamp base is provided for an electric lamp, in particular for a motor vehicle headlamp with a plastic base part, which has a first section of a higher melting and / or higher temperature resistant plastic in a region adjacent to the lamp vessel and a second section of a lower melting and / or or lower temperature resistant plastic in a range of mechanical stress.
  • a plastic base part which has a first section of a higher melting and / or higher temperature resistant plastic in a region adjacent to the lamp vessel and a second section of a lower melting and / or or lower temperature resistant plastic in a range of mechanical stress.
  • the melting point of the higher melting plastic is above 260 0 C and the melting point of the lower melting plastic is below 260 0 C.
  • a higher melting plastic for example, PPS and lower-melting plastic PA and PBT used, which leads to a cost-effective implementation of the lamp cap.
  • the plastic base part has a third section of a polymeric material with a sealing effect.
  • the third section can be sprayed on the lamp base.
  • the third section is arranged to the lamp vessel facing flange portion of the lamp cap, whereby a seal adjacent to the lamp vessel while ensuring small dimensions of the lamp cap can be implemented.
  • the third section is provided between a contact lug and the first or second section of the plastic base part. In this way, a sealing effect between the contact lug and plastic base part can be implemented.
  • a lamp base can be provided in a simple manner by two injection molding operations, which can be used both thermally and improves mechanical and mechanical requirements compared to the state of the art.
  • the third section is provided between a contact lug and the first or second section of the plastic base part.
  • FIG. 1 shows a cut lamp base with incorporated holding device for a lamp vessel
  • Fig. 3 is a partial plan view of the lamp cap of Figure 2 and
  • Fig. 4 is a schematic diagram of the manufacture of the lamp cap according to the invention. Preferred embodiment of the invention
  • FIG. 1 shows a lamp arrangement 1 according to the invention with a schematically illustrated lamp base 2.
  • the lamp base 2 has a plastic base part 4 with a connection section 6.
  • the connection section 6 is designed like a bush.
  • a contact section 10 of a contact lug 12 projects in the interior 8 of the connection section 6, a contact section 10 of a contact lug 12 projects.
  • the contact lug 12 is formed substantially L-shaped and has a connecting portion 14 which are connectable to power supply wires 16, 18 of the lamp 20.
  • the portion of the contact lug 12, to which the contact portion 10 is connected to the connecting portion 14, is cast in the plastic base part 4.
  • a flange portion 22 is provided on the plastic base part 4, via which the lamp base 2 can be fastened by means of a sealing ring 26 to a reflector 24 shown in dashed lines in FIG.
  • a connection space 28 is provided in the lamp base 2, in which the connecting portion 14 of the contact lug 12 protrudes.
  • an annular support sleeve 30 is further anchored, preferably by ultrasonic welding, in which a cup-shaped holding part 34 is supported via an intermediate ring 32, in which the pinch 36 of a lamp vessel 38 of the lamp 20 is received.
  • a light-absorbing coating 40 is provided at the end portion of the lamp vessel 38 opposite the pinch 36.
  • the filament 42 shown in Figure 1 is electrically connected to the power supply wires 16, 18.
  • the lamp 20 is a single-filament halogen incandescent lamp intended for use in a motor vehicle headlight.
  • the lamp base 2 is preferably of the types H8, H9 or HIl, which can be used in particular for high beam and fog lights.
  • FIG. 2 shows a sectional view through the lamp base 2 according to the invention in more detail than in FIG.
  • the lamp base 2 has the plastic base part 4, which has a base portion 60, a lower portion 62 adjacent thereto, and a sealing portion 64 provided from the side of the lamp base. The determination of the sections takes place after the function of the different parts of the lamp cap in operation.
  • the flange portion 22 of Figure 1 forms part of the base portion 60 and is preferably made of higher melting plastic.
  • plastics are characterized by high strength, stiffness and hardness as well as heat distortion resistance, and have, for example, a melting point greater than 260 0 C.
  • An example is PPS (polyphenylene sulfides).
  • the flange portion 22 receives the lamp vessel 38, the highest temperatures of the lamp cap are to be expected on this. Therefore, the higher melting plastic is used for the base portion.
  • the contact lug 12 there is also the L-shaped contact lug 12 in the base portion, because of the power supply lines 16 and 18 of the lamp 20, the contact lug 12 heat is supplied and this can be delivered via the contact lugs to the surrounding material.
  • the lower portion 62 of the plastic base part 4 has the connection portion 6 with the interior 8 and is continued by a bottom portion 66 below the base portion 60.
  • opposite sides of the base portion 60 in the region where the contact lug 12 is received therein are enclosed by the lower portion 62 and thus kept mechanically stable.
  • the lower portion 62 is made of a lower melting plastic, for example, a plastic having a melting point below 260 0 C.
  • a lower melting plastic for example, a plastic having a melting point below 260 0 C.
  • PA polyamide
  • PBT polybutylene terephthalates
  • Such lower melting plastics preferably have a higher mechanical strength and are preferably less brittle than higher melting plastics. In addition, these are cheaper and at low temperature, ie easier to process. When using highly filled PPS, which is brittle, this can be made tougher by bonding with, for example, thermoplastics.
  • FIG. 3 shows a plan view of the base section 60 with sealing section 64 and adjacent lower section 62.
  • a latching nose 68 is formed in the region of the connection section 6, via which a plug can be applied to the connection section 6 and can be mechanically stable . Due to the use tion of the lower melting plastic for the lower portion 62, this latching nose 68 can be formed mechanically more stable than in the prior art and thus the life of the lamp cap can be increased.
  • a sealing section 64 is provided on the flange section 22 surrounding the base section 60, which has the sealing ring 26 and the contact lug sealing section 70.
  • the area with the sealing ring 26 of the sealing portion 64 and the area of the contact tab Abdichtabitess 70 are connected to each other via a connecting channel 72, which ensures that when forming the sealing ring 26, the sealing material, such as silicone, also reaches the contact tab Abdichtabrough 70.
  • plastic base part 4 With the plastic base part 4 according to the invention, it is possible to achieve high mechanical stability in the region of the connection section and to provide a high temperature resistance in the region of the flange section 22. At the same time, a suitable sealing compound can be provided at the required sections, such as sealing ring 26 and contact tab sealing section 70.
  • a pre-molded part made of a higher-melting plastic is injected in a first injection process, the latter having the contact lugs 12 and the base section 60. Subsequently, this preform is inserted into another tool and with the lower melting Plastic encapsulated, so that the lower portion 62 of the plastic base part 4 is formed.
  • the lamp base comes in a third tool and the third component of the sealing ring 26 is molded, wherein the sealing material passes through connection channel 72 in the region of the contact tab sealing portion 70.
  • the amount of higher melting plastic such as PPS used can be reduced due to the use of the lower melting plastic in the lower portion 62, and at the same time, stable locking lugs can be provided on the terminal portion 6. Since the sealing ring 26 and the contact lug Abdichtabites 70 are formed by injection molding, the Verg chipmaschinen according to the prior art, which have provided there for the Dichtverguss omitted.
  • FIG. 4 schematically shows a machine for producing lamp sockets according to the invention.
  • This machine has stamped strip feeders 80a, 80b, which provide a respective contact lug at a punching station 82a, 82b and load a workpiece carrier at the loading station 84a, 84b.
  • the carrier system 86 Via the carrier system 86, the workpiece carriers reach the measuring station 88, at which an assembly control and a temperature measurement take place.
  • the workpiece carriers are fed to a first injection molding machine 90 and a second injection molding machine 92, and the base portion 60 and the lower portion 62 are formed on the contact lugs.
  • the finished high-quality lamp base for Gutteilablage 96 After removal of the pedestals at the extraction station 94, The finished high-quality lamp base for Gutteilablage 96.
  • the formation of the sealing portion 64 is not shown in Figure 4, but can be done following the processing in the second injection molding machine 92.
  • the carrier system 86 is designed as a circulatory carrier system.
  • an effective manufacturing method for forming a lamp cap having at least two different types of plastic can be implemented in a simple manufacturing process.
  • a lamp base for an electric lamp in particular for a motor vehicle headlamp with a plastic base part having a first portion of a higher melting plastic in a region adjacent to the lamp vessel and a second portion of a lower melting plastic in a region of mechanical stress ,
  • a plastic base part having a first portion of a higher melting plastic in a region adjacent to the lamp vessel and a second portion of a lower melting plastic in a region of mechanical stress

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention concerne un culot de lampe pour une lampe électrique, notamment pour une lampe de phare de véhicule, comportant une pièce de culot en plastique présentant une première partie réalisée en plastique à point de fusion supérieur dans une zone adjacente au culot de lampe, et une deuxième partie réalisée en plastique à point de fusion inférieur dans une zone de contrainte mécanique. Il est ainsi possible d'économiser du plastique à point de fusion supérieur coûteux, tout en garantissant une plus grande durée de vie dans la zone de contrainte mécanique.
PCT/DE2008/000859 2007-05-22 2008-05-21 Culot de lampe pour une lampe électrique Ceased WO2008141630A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102007023638.9 2007-05-22
DE102007023638A DE102007023638B4 (de) 2007-05-22 2007-05-22 Lampensockel für eine elektrische Lampe und dessen Herstellung
DE102007061915 2007-12-21
DE102007061915.6 2007-12-21

Publications (2)

Publication Number Publication Date
WO2008141630A2 true WO2008141630A2 (fr) 2008-11-27
WO2008141630A3 WO2008141630A3 (fr) 2009-04-30

Family

ID=40032212

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/000859 Ceased WO2008141630A2 (fr) 2007-05-22 2008-05-21 Culot de lampe pour une lampe électrique

Country Status (1)

Country Link
WO (1) WO2008141630A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0485717A (ja) * 1990-07-30 1992-03-18 Audio Technica Corp 磁気ヘッド用クリーニングテープおよびその製造法
CN101863241A (zh) * 2010-05-17 2010-10-20 重庆长安汽车股份有限公司 一种汽车前位灯接插件总成
JP2016516278A (ja) * 2013-03-15 2016-06-02 フェデラル−モーグル コーポレイション 車両ランプソケットアセンブリ
DE102015223143A1 (de) 2015-11-24 2017-05-24 Osram Gmbh Lampe und Verfahren zum Herstellen der Lampe

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3528399A1 (de) * 1984-08-24 1986-02-27 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Elektrische lampe
US4569005A (en) * 1985-01-15 1986-02-04 Gte Products Corporation Replaceable lamp unit and automobile headlight utilizing same
DE3603753A1 (de) * 1986-02-06 1987-08-20 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Elektrische lampe
DE8615923U1 (de) * 1986-06-13 1986-07-31 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 81543 München Elektrische Lampe für Kfz-Beleuchtung
US4719543A (en) * 1987-02-06 1988-01-12 Gte Products Corporation Replaceable lamp unit for automobile headlight

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0485717A (ja) * 1990-07-30 1992-03-18 Audio Technica Corp 磁気ヘッド用クリーニングテープおよびその製造法
CN101863241A (zh) * 2010-05-17 2010-10-20 重庆长安汽车股份有限公司 一种汽车前位灯接插件总成
JP2016516278A (ja) * 2013-03-15 2016-06-02 フェデラル−モーグル コーポレイション 車両ランプソケットアセンブリ
KR101767985B1 (ko) 2013-03-15 2017-08-14 페더럴-모걸 엘엘씨 차량 램프 소켓 조립체
DE102015223143A1 (de) 2015-11-24 2017-05-24 Osram Gmbh Lampe und Verfahren zum Herstellen der Lampe

Also Published As

Publication number Publication date
WO2008141630A3 (fr) 2009-04-30

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