EP1743404A1 - Procede pour realiser une grille decoupee enveloppee de plastique et grille decoupee enveloppee de plastique - Google Patents

Procede pour realiser une grille decoupee enveloppee de plastique et grille decoupee enveloppee de plastique

Info

Publication number
EP1743404A1
EP1743404A1 EP05707981A EP05707981A EP1743404A1 EP 1743404 A1 EP1743404 A1 EP 1743404A1 EP 05707981 A EP05707981 A EP 05707981A EP 05707981 A EP05707981 A EP 05707981A EP 1743404 A1 EP1743404 A1 EP 1743404A1
Authority
EP
European Patent Office
Prior art keywords
plastic
lead frame
component
injection mold
housing
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Withdrawn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
EP05707981A
Other languages
German (de)
English (en)
Inventor
Michael Horbelt
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1743404A1 publication Critical patent/EP1743404A1/fr
Withdrawn legal-status Critical Current

Links

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
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
    • H01R43/24—Assembling by moulding on contact members
    • 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
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/405—Securing in non-demountable manner, e.g. moulding, riveting

Definitions

  • the invention is based on a method for producing a stamped grid made of plastic and a stamped grid overmoulded with plastic, on which electronic components are preferably arranged, according to the preamble of independent claims 1 and 8.
  • the lead frame is embedded in plastic in an injection mold.
  • the lead frame is usually on several during the spraying process
  • the fixing elements are stamps which are arranged in the injection mold and hold the lead frame in pairs. This fixes the shape of the lead frame, so that the shape of the lead frame is essentially preserved during the injection molding process.
  • the use of the stamp means that the leadframe is not included at these points
  • Plastic is covered, which can have negative effects in aggressive environmental conditions to which the metal of the lead frame can be exposed.
  • Plastic-molded lead frames which are embedded in a plastic housing, are also known.
  • the housing can, for example, in a two-component
  • the method according to the invention for producing a plastic-coated lead frame and the plastic-coated lead frame, on which electronic components are preferably arranged, with the features of independent claims 1 and 8 have the advantage that unnecessarily exposed areas are closed for the function of the lead frame in use.
  • the lead frame is embedded in plastic in at least a first injection mold, the lead frame being fixed at least one fixing point with at least one fixing element during the injection molding process , so that the shape of the lead frame is essentially preserved during the injection molding process, being at least one
  • Fixing element a plastic element is used and the plastic element is at least partially enclosed by the injected plastic, so that the fixing point is sealed.
  • the plastic element lies when it is connected to the
  • Stamped grid is inserted into the injection mold and the injection mold is closed on a first side of the injection mold and on a second side of the injection mold opposite the first side. This ensures a good fit in the injection mold.
  • the plastic element is preferably held in the at least first injection mold with an interference fit.
  • the best seal is obtained if the at least one plastic element is at least partially melted, so that the fixing point is sealed.
  • the at least one plastic element is attached to the lead frame and / or a component arranged on the lead frame in a first operation, and the lead frame is then inserted into the injection mold to complete the encapsulation.
  • the first operation is preferably carried out in a different injection mold.
  • the at least one plastic element is preferably arranged in the region of an ejector of the at least one injection mold. This results in a relatively smooth surface on which dirt finds less grip.
  • the plastic-molded lead frame according to the invention which is made in a housing
  • Plastic is embedded, has a housing that is manufactured in a two-component injection molding process with a first and a second component, the lead frame being completely encapsulated with the second component, at least connections for mechanical and / or electrical connection of the lead frame not from the second Component are enclosed and wherein the first component opens on a first outside of the housing and on a second outside opposite the first outside.
  • the mouths of the first component are preferably aligned with one another. This enables simple visual control as part of a quality control.
  • the first component encloses at least part of the lead frame. This gives a good hold.
  • the first component is preferably made of the same plastic as the second
  • FIG. 1 shows a bottom view of a stamped grid overmolded with plastic, in which a component is arranged
  • Figure 2 is a front view of Figure 1 with an exemplary injection mold
  • Figure 3 shows the lead frame in a preliminary stage with another injection mold. Description of the embodiment
  • FIG. 1 shows an interference suppression device 10 for an electric motor, not shown, in a bottom view.
  • the interference suppression device 10 comprises a housing 12 made of plastic and a lead frame 14 embedded therein, on which a capacitor 16, possibly combined with a resistor, is arranged.
  • the interference suppression device 10 has four connections 18, which are formed by two parallel strips 20 of the lead frame 14, which protrude from the housing 12 on two opposite longitudinal sides 22.
  • a complex control device with dozens of connections 18 and a much more complex lead frame 14, which carries a large number of different components - not just capacitors 16 - is provided.
  • no electronic components are provided at all, and that it is only a stamped grid 14 injection-molded with plastic, for example in the form of a plug. However, it is preferred that 14 electronic components are arranged on the plastic-encapsulated lead frame.
  • the housing 12 is produced in a two-component injection molding process with a first component 24 and a second component 26. Both components 24, 26 are preferably made of the same plastic.
  • the lead frame 14 is almost completely extrusion-coated with the second component 26, the connections 18 for mechanical and / or electrical connection of the lead frame 14 not being enclosed by the second component 26.
  • the first component 24 is illustrated in FIG. 1 by two rectangular openings 28 in the underside 30 of the housing 12.
  • the first component 24 opens onto this underside 30 of the housing 12, which represents a first outer side, and to the second, opposite the first outer side
  • FIG. 2 further shows that the orifices 28 in the underside 30 and the orifices 34 in the upper side 32 of the first component 24 are aligned with one another in pairs. From the representations of Figures 1 and 2 it also follows that the first
  • Component 24 encloses part of the lead frame 14 by partially embedding both strips 20 therein.
  • the lead frame 14 which has already been manufactured is partially indicated by dash-dotted lines Injection mold 36 inserted.
  • the injection mold 36 is shaped such that when the plastic is injected, two plastic elements 38 are produced from the first component 24 and fix the two strips 20 in their position relative to one another.
  • the capacitor 16 is then attached to the lead frame 14 and the assembly resulting therefrom is inserted into a further injection mold 40, which is also indicated by dash-dotted lines in FIG.
  • a further injection mold 40 which is also indicated by dash-dotted lines in FIG.
  • the plastic elements 38 rest on two opposite sides 46, 48 or the halves 42, 44 of the injection mold 40.
  • the plastic elements 38 with a
  • the second component 26 is injected and the lead frame 14 is embedded in the injection mold 40 in the plastic of the second component 26.
  • the lead frame 14 is fixed by the plastic elements 38 during the injection molding process, so that the shape of the lead frame 14 is essentially preserved during this process.
  • the plastic elements 38 thus act as fixing elements which fix the lead frame 14 at fixing points which correspond to the openings 28, 34.
  • the plastic elements 38 are at least partially enclosed by the injected plastic of the second component 26, because the orifices 28, 34 may remain free, so that the fixing point is sealed.
  • the plastic elements 38 are arranged such that they are arranged in the region of ejectors 50 of the injection mold 40.
  • elements connected by a hinge can also be used, which can be attached to the lead frame 14 by means of a latching hook connection.
  • the plastic elements 38 can also be fastened to the capacitor 16 or to another component arranged on the lead frame 14.
  • the plastic elements 38 can also be arranged both on a component and also directly on the lead frame 14. It is also conceivable that the plastic elements 38 each have two or more parts and a first part is attached to a component and a second or further component is attached to the lead frame 14. Of course, only a single plastic element 38 can also be provided. The necessary number can be determined. The number of orifices 28, 34 that may be visible thus also varies.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Abstract

L'invention concerne un procédé pour réaliser une grille découpée (14) enveloppée de plastique, sur laquelle sont disposés des composants (16), cette grille étant enrobée de plastique (26) dans un moule de moulage par injection (40). Cette grille découpée (14) est, pendant le moulage par injection, fixée à un emplacement de fixation (28, 34) par un élément de fixation, de sorte que sa forme est maintenue lors du moulage. L'élément de fixation est un élément en plastique (38) enrobé de plastique (26) par injection, de façon à boucher l'emplacement de fixation (28, 34). La présente invention porte également sur une grille découpée (14) enveloppée de plastique, insérée dans un boîtier (12) de plastique comprenant un premier et un deuxième composant (24, 26). La grille découpée (14) est entièrement enrobée du deuxième composant (26), des raccords (18) pour le raccordement électrique et/ou mécanique de la grille (14) n'étant pas recouverts, et le premier composant (24) confluant au niveau d'une première face externe (30) et d'une deuxième face externe (32) du boîtier (12).
EP05707981A 2004-04-24 2005-02-09 Procede pour realiser une grille decoupee enveloppee de plastique et grille decoupee enveloppee de plastique Withdrawn EP1743404A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004020085A DE102004020085A1 (de) 2004-04-24 2004-04-24 Verfahren zur Herstellung eines kunststoffumspritzten Stanzgitters und kunststoffumpritztes Stanzgitter
PCT/EP2005/050562 WO2005104306A1 (fr) 2004-04-24 2005-02-09 Procede pour realiser une grille decoupee enveloppee de plastique et grille decoupee enveloppee de plastique

Publications (1)

Publication Number Publication Date
EP1743404A1 true EP1743404A1 (fr) 2007-01-17

Family

ID=34960310

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05707981A Withdrawn EP1743404A1 (fr) 2004-04-24 2005-02-09 Procede pour realiser une grille decoupee enveloppee de plastique et grille decoupee enveloppee de plastique

Country Status (6)

Country Link
US (1) US20080025004A1 (fr)
EP (1) EP1743404A1 (fr)
JP (1) JP2007533504A (fr)
CN (1) CN1947315A (fr)
DE (1) DE102004020085A1 (fr)
WO (1) WO2005104306A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT503029B1 (de) * 2006-03-03 2007-07-15 Pollmann Austria Ohg Fixierelement für elektrische leiter, leiterstruktur-bauteil und verfahren zu dessen herstellung
AT503044B1 (de) * 2006-03-03 2007-07-15 Pollmann Austria Ohg Fixierelement für elektrische leiter, leiterstruktur-bauteil und verfahren zu dessen herstellung
DE102009046467B4 (de) 2009-11-06 2023-11-09 Robert Bosch Gmbh Leiterbahnstanzgitter mit einer speziellen Oberflächenkontur sowie Steuergerät mit einem solchen Leiterbahnstanzgitter
DE102009047621A1 (de) * 2009-12-08 2011-06-09 Robert Bosch Gmbh Positionssensor
DE102013217549A1 (de) * 2013-09-03 2015-03-05 Robert Bosch Gmbh Leiterbahnstanzgitter und Verfahren zum Fertigen desselben
DE102014008853B4 (de) 2014-06-14 2016-05-04 Audi Ag Kunststoffumspritzte Leiterbahnstruktur sowie Verfahren zur Herstellung der kunststoffumspritzten Leiterbahnstruktur
CN104908230A (zh) * 2015-06-04 2015-09-16 昆山大庚汽车配件有限公司 轻量化二次注塑密封结构
DE102016116289A1 (de) 2016-02-24 2017-08-24 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Gitterverbund für Luftöffnungen
DE102016220070A1 (de) * 2016-10-14 2018-04-19 Robert Bosch Gmbh Entstörsystem, Antrieb und Handwerkzeugmaschine
DE102018123664B3 (de) 2018-09-26 2020-01-09 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Gitterverbund für eine Luftöffnung
DE102019210373A1 (de) * 2019-07-12 2021-01-14 Continental Teves Ag & Co. Ohg Sensor mit dichter Umspritzung und einem freigestellten Bereich
DE102021107369A1 (de) 2021-03-24 2022-09-29 Marquardt Gmbh Optimierte Stanzgitteranordnung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3611224A1 (de) * 1986-04-04 1987-10-08 Siemens Ag Herstellungsverfahren eines kombinationsteils aus kunststoff mit einem einlegeteil
EP0257681A3 (fr) * 1986-08-27 1990-02-07 STMicroelectronics S.r.l. Procédé pour la fabrication de dispositifs à semi-conducteur encapsulés dans de la lumière plastique et dispositifs ainsi obtenus
JP3078860B2 (ja) * 1991-02-18 2000-08-21 株式会社デンソー 金属部材の樹脂インサート成形方法
WO1993014618A1 (fr) * 1992-01-13 1993-07-22 Asm-Fico Tooling B.V. Appareil de moulage d'une grille de connexion et de puces disposees sur celle-ci
JP3402719B2 (ja) * 1993-12-29 2003-05-06 ニチアス株式会社 フッ素樹脂を表面材とする板状インサート成形体の製造法
JP3454457B2 (ja) * 1997-01-09 2003-10-06 矢崎総業株式会社 成形物の製造方法及び成形用金型
JP3400685B2 (ja) * 1997-09-04 2003-04-28 矢崎総業株式会社 インサート成形によるターミナルの製造方法
US6630089B2 (en) * 2001-05-18 2003-10-07 Chao-Yueh Chuang Process for forming a molded plastic layer on a metal plate

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2005104306A1 *

Also Published As

Publication number Publication date
US20080025004A1 (en) 2008-01-31
WO2005104306A1 (fr) 2005-11-03
DE102004020085A1 (de) 2005-11-17
CN1947315A (zh) 2007-04-11
JP2007533504A (ja) 2007-11-22

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