EP0883918A1 - Lame de contact flexible et procede pour sa fabrication a partir d'une plaque de metal - Google Patents

Lame de contact flexible et procede pour sa fabrication a partir d'une plaque de metal

Info

Publication number
EP0883918A1
EP0883918A1 EP97905098A EP97905098A EP0883918A1 EP 0883918 A1 EP0883918 A1 EP 0883918A1 EP 97905098 A EP97905098 A EP 97905098A EP 97905098 A EP97905098 A EP 97905098A EP 0883918 A1 EP0883918 A1 EP 0883918A1
Authority
EP
European Patent Office
Prior art keywords
embossing
plate
contact tongue
tongue
protrudes
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.)
Granted
Application number
EP97905098A
Other languages
German (de)
English (en)
Other versions
EP0883918B1 (fr
Inventor
Gianfranco Natali
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
Priority to SI9730054T priority Critical patent/SI0883918T1/xx
Publication of EP0883918A1 publication Critical patent/EP0883918A1/fr
Application granted granted Critical
Publication of EP0883918B1 publication Critical patent/EP0883918B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/245—Contacts for co-operating by abutting resilient; resiliently-mounted by stamped-out resilient contact arm
    • 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
    • H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending
    • 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
    • H01R43/26—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for engaging or disengaging the two parts of a coupling device
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49105—Switch making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49204—Contact or terminal manufacturing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49204—Contact or terminal manufacturing
    • Y10T29/49208—Contact or terminal manufacturing by assembling plural parts
    • Y10T29/49218—Contact or terminal manufacturing by assembling plural parts with deforming

Definitions

  • the invention relates to an elastic, flexible contact tongue and the process by which it is obtained from a metal plate and from which it protrudes in order to work mechanically with another plate and / or with other objects that are in its vicinity or make electrical contact.
  • Flexible and elastic metal contact tongues are known, through which an electrical or mechanical contact between the
  • Metal parts is manufactured in their vicinity.
  • Contact tongues consist of a thin metal plate, which is usually reminiscent of the shape of a Z, which is connected to a limb with a metal structure by means of a rivet, usually to the supporting surface of a metal frame.
  • the other extremity remains free and protrudes during work until the surface to be contacted is touched.
  • the contact tongue is directly from the
  • Metal plate from which it protrudes by a process that consists of a sequence of stamping and
  • Fi gurau cut operations consists of a partial, localized embossing, and a bend.
  • the metal is removed so that a tongue is formed which remains connected to the plate at one extremity and is free on three sides.
  • the protruding tongue has elastic properties.
  • the known tongues and operations with which they are made have some disadvantages.
  • the tongue of the first type has to be specially manufactured, only then is it positioned on the plate, on which it then has to be soldered, or, as is more frequently the case, drilled and riveted, or snapped into place.
  • the tongue In addition to the complex process and the subsequent positioning and fastening, the tongue also protrudes completely from the plate on which it is fastened, so that it strikes during and after assembly, and therefore on the ground its low strength, or its sharp edges can cause injury to people handling it.
  • the contact tongue of the second type is obtained directly from the plate on which it is used, by means of a traditional punch-figure cutting operation, and which creates a relatively large opening around the tongue, which in some applications is very thin, however, for reasons of space therefore turns out weak.
  • the large space on the three sides of the contact tongue leads on the one hand to the hooking of the protruding tongue with foreign bodies and injuries on the hands of the employee, on the other hand it represents an outlet and outlet opening, the is not acceptable in some applications.
  • the open edge caused by the punching can lead to injuries to the operator if the handling is unskillful.
  • the aim of the present invention is to provide an elastic contact tongue which projects from a metal plate, which is inexpensive and quick to produce, and which is designed in such a way that it guarantees both the contact with another metal plate or another metallic element, as well as the retention their properties during the production phase and after their marketing, even if these are carried out without special precautions and considerations.
  • Another aim is to ensure the safety of the operator, who must not suffer hand injuries due to the protrusion of the tongue and its fine structure.
  • the invention which enables the results mentioned, consists of a contact tongue, which is obtained from the plate from which it is to protrude, by means of a first stamping operation, through which the exit opening is created, an embossing operation, with which inside the stamping hole (which in part is thereby is closed again) an embossing and a protruding contact button is created, a second stamping operation along the end lines of the tongue, which is carried out from the side opposite the embossing, and a bend until the tongue protrudes from the surface of the plate.
  • the invention has the following advantages:
  • the compressed contact tongue protrudes from the surface of the metal plate from which it was obtained in such a way that, when it is pressed in from the opposite side, it bends into the embossing created by the embossing process, and thus lies flat on the plate if necessary ;
  • the contact tongue points with the sharp edge, which arises in the second stamping phase, towards the inside of the embossing, and thus in a direction protected from the operator, so that injuries are avoided;
  • the contact tongue is characterized by its ability to bend into the embossing opening, by its protruding contact point in the form of a button, by its normally limited protrusion from the plate, and by the fact that the sharp edges of the Die cuts are hidden, and are inaccessible to the operator, safe in function and handling, and therefore advantageous in terms of the current state of the art.
  • FIG. 1 is a view of the part of the plate on which the embossing and the flexible, elastic contact tongue are located;
  • FIG. 2 shows the section of the plate part of Figure 1 along the line AA;
  • FIG. 3 shows the first stamping operation, a view of the plate part on which the discharge opening for the material has been stamped
  • FIG. 4 shows the embossing process, a view of the part of the plate of Figure 3, on which the embossing and the protruding around the discharge opening
  • FIG. 5 shows the second stamping phase, a view of the plate from FIG. 4 after the second stamping operation
  • 1 denotes the base plate
  • 2 the flexible contact tongue
  • 3 the edge that defines the embossing 4
  • 5 the protruding contact button
  • 6 the opening for the ejection of the material compacted during the embossing phase
  • 8 the free end of the contact tongue 2
  • 9 the upper surface of the plate 1
  • 10 the lower surface
  • 1 1 the pressed edge between the edge 3 of the embossing 4 and the peripheral edge of the contact tongue 2.
  • the invention therefore consists of a special structure and formation of the flexible and elastic contact tongue 2, which is obtained from a plate 1, or shaped and / or structured, of which it is part.
  • the invention also consists of the special operations with which the contact tongue 2 is produced, which is an integral part of the plate 1.
  • the contact tongue protrudes from the plate 1 and has elastic properties which have the effect that the tongue, when pressed against foreign bodies, bends, keeps the contact and at the same time is pressed in the direction of the depression of the embossing 4, out of it normally protrudes up to its pushing in, which, if necessary, can be carried out completely, so that at the same time the opening from which the tongue 2 is formed is almost completely closed.
  • the operations for producing the contact tongue provide for a first stamping phase (FIG. 3), with which a wide ejection opening 6 is created on the plate 1, an embossing phase (FIG. 4), through which the embossing 4 and the protruding edge are formed on the edges of the ejection opening 6 Contact button 5 are created, a second stamping and bending phase, in which the metal, with reduced diameter and in the embossing 4, punched along the line that defines the circumference of the contact tongue 2, and is pressed out on the side from which embossing 4 was carried out itself.
  • the first stamping operation removes metal and creates the ejection opening 6, which is normally elongated in shape and is in correspondence with the central axis of the contact tongue 2 to be produced.
  • the entire metal of the embossing 4 is deformed and compressed under pressure until it is so elastic that the contact tongue realized becomes flexible and elastic around its rest position, while the thickness of the plate 1 is reduced locally to a limited extent.
  • a shift of the metal is effected, which moves towards the opening 6, which thereby narrows, which is why it is initially so must be dimensioned so that compression, and thus the realization of the desired pressure 4, is ensured.
  • the depth of the pressure is normally about half the original thickness of the plate 1 to allow the end product of the contact tongue 2 to bend when pressed until it fills the pressure itself and without protruding from the surface 9 of the plate, and without snapping back into the shape from which it emerged during the second punching and without being held in it.
  • the thinning of the plate 1 is achieved in correspondence with the embossing 4, and in a reduced form at the point to which the metal shifts due to a cavity on the stamping die, so that the contact button 5 is created on the contact tongue 2 which serves the contact of the tongue itself with other bodies.
  • the embossing 4 is realized in larger dimensions (length, width) than that of the flexible contact tongue 2 to be produced, in that the line on which the embossing for the contact tongue is punched is located inside the edge 3, which delimits the embossing 4 , so that the crown 1 1 is created with reduced strength.
  • the embossing stamp which embosses the embossing 4 is intended to have an embossing head which is designed in such a way that the bottom of the embossing 4, apart from the above contact button 5, is of uniform thickness if a tongue is desired which is on it entire length should have a constant bendability.
  • the stamp should have a shaped head for embossing a non-uniform recess if a contact tongue with greater flexibility is to be created, which is able to bend differently depending on the elements located along its length, so that a contact tongue with minimal Strength arises in the correspondence of the points in which it should have the greater bending capacity.
  • the contact tongue 2 is thus created on the basis of the stamping from three sides of the embossing 4, and thus results as a structure fastened on one side. They are stamped by means of an embossing stamp which is inserted from page 10 of plate 1 on the back of embossing 4, so that the sharp edge of contact tongue 2 is aligned with embossing 4, and the sharp edge of plate 1 inside the Embossing 4 remains.
  • an embossing stamp which corresponds exactly to the basic shape is not absolutely necessary during the stamping process.
  • the contact tongue is pressed against the outside of the plate 1, its starting point remains connected to the edge of the depression from which the tongue was formed, and remains in the desired rest position from which at least its contact button 5 protrudes from the surface 9.
  • the sharp edge of the contact tongue 2 thus remains from the Material thickness of the plate 1 protected, so that the contact between the sharp edge and the operator is prevented while the opening remains small, and is almost completely closed by pressing the tongue against the embossing 4.
  • the thus structured and shaped contact tongue thus appears as an integral part of the plate 1, has an elongated central opening of small dimensions, which results from the embossing of the plate 1, in which the embossed material partially fills the original opening 6, has against its free-standing and Edge over a protruding button 5, and is oriented towards the outside of the embossing 4.
  • the contact tongue 2 can have more than one contact button 5 at its free-standing end 8.
  • the tongue can be shaped so that it protrudes from the plate 1 when viewed from the side in such a way that its contact with other bodies is facilitated and therefore no protruding contact buttons are necessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Manufacture Of Switches (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
  • Punching Or Piercing (AREA)
  • Soil Working Implements (AREA)

Abstract

L'invention concerne une lame de contact (2) obtenue à partir d'une plaque de métal (1) de telle manière qu'au cours d'un premier estampage est réalisée une ouverture de repoussage (6) autour de laquelle sont formés une section estampée (4) et un bouton de contact saillant (5), et, au cours d'une deuxième phase d'estampage, une lame (2) est découpée dans la région métallique rendue plus fine et plus dense par l'estampage et cintrée de sorte que l'extrémité libre de la lame (2) dépasse de la section estampée (4) au-dessus de la plaque (1).
EP97905098A 1996-02-26 1997-02-26 Lame de contact flexible et procede pour sa fabrication a partir d'une plaque de metal Expired - Lifetime EP0883918B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9730054T SI0883918T1 (en) 1996-02-26 1997-02-26 Elastic contact tongue and process for its production from a metal plate

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT96AR000006A IT1286938B1 (it) 1996-02-26 1996-02-26 Linguetta elastica di contatto e procedimento con cui e' ricavata in una piastra
ITAR960006 1996-02-26
PCT/EP1997/000935 WO1997032371A1 (fr) 1996-02-26 1997-02-26 Lame de contact flexible et procede pour sa fabrication a partir d'une plaque de metal

Publications (2)

Publication Number Publication Date
EP0883918A1 true EP0883918A1 (fr) 1998-12-16
EP0883918B1 EP0883918B1 (fr) 2000-01-19

Family

ID=11334919

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97905098A Expired - Lifetime EP0883918B1 (fr) 1996-02-26 1997-02-26 Lame de contact flexible et procede pour sa fabrication a partir d'une plaque de metal

Country Status (7)

Country Link
US (1) US5813117A (fr)
EP (1) EP0883918B1 (fr)
AT (1) ATE189086T1 (fr)
DE (1) DE19707745A1 (fr)
ES (1) ES2145578T3 (fr)
IT (1) IT1286938B1 (fr)
WO (1) WO1997032371A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29807643U1 (de) * 1998-04-28 1998-07-16 TRW Automotive Safety Systems GmbH, 63743 Aschaffenburg Vorrichtung zur Einstellung des Kontaktabstandes
DE102004047652A1 (de) * 2004-09-30 2006-04-06 Rohde & Schwarz Gmbh & Co. Kg Kontaktzunge für eine elektrische Schaltvorrichtung, Verfahren zum Herstellen einer elektrischen Kontaktzunge und elektrische Schaltvorrichtung mit einer Kontaktzunge
US8835017B2 (en) * 2009-07-29 2014-09-16 Yuan Deng Metals Industrial Co., Ltd. Metal sheet member having high plastic bonding strength
WO2014177205A1 (fr) * 2013-04-30 2014-11-06 Sca Hygiene Products Ab Prise de connecteur comprenant supports de contact pour capteur d'humidité
EP3162870A1 (fr) 2015-10-27 2017-05-03 Linde Aktiengesellschaft Réfrigérant mélangé basse température pour pré-refroidissement d'hydrogène à grande échelle

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3559604A (en) * 1967-04-13 1971-02-02 Elco Corp Method of forming swaged contacts using progressive die
US3878347A (en) * 1974-02-04 1975-04-15 Otto Engineering Electrical switch
US4118610A (en) * 1974-11-16 1978-10-03 Ranco Incorporated Snap action switch blades
US3995365A (en) * 1975-01-13 1976-12-07 Otto Engineering, Inc. Method of forming electrical contacts
US4145587A (en) * 1977-07-25 1979-03-20 Ranco Incorporated Snap action switches
DE2813150A1 (de) * 1978-03-25 1979-09-27 Grundig Emv Schiebe-mehrfachumschalter und verfahren zur herstellung
US4250367A (en) * 1978-07-14 1981-02-10 Ranco Incorporated Snap action switch blades
EP0226952B1 (fr) * 1985-12-13 1990-03-21 Siemens Aktiengesellschaft Ressort de contact
DE3925598A1 (de) * 1989-08-02 1991-02-07 Grote & Hartmann Verfahren zum herstellen eines kontaktelements fuer einen folienverbinder und kontaktelement fuer einen solchen folienverbinder
US5666723A (en) * 1994-04-22 1997-09-16 Yazaki Corporation Method of producing connector terminal

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9732371A1 *

Also Published As

Publication number Publication date
ITAR960006A0 (fr) 1996-02-26
EP0883918B1 (fr) 2000-01-19
ATE189086T1 (de) 2000-02-15
US5813117A (en) 1998-09-29
IT1286938B1 (it) 1998-07-24
WO1997032371A1 (fr) 1997-09-04
ES2145578T3 (es) 2000-07-01
DE19707745A1 (de) 1997-10-30
ITAR960006A1 (it) 1997-08-26

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