EP1052663B1 - Aus einer Blattfeder und ihrer Halterung bestehende Einheit für einen Schnappschalter und Herstellungsverfahren - Google Patents

Aus einer Blattfeder und ihrer Halterung bestehende Einheit für einen Schnappschalter und Herstellungsverfahren Download PDF

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Publication number
EP1052663B1
EP1052663B1 EP00109259A EP00109259A EP1052663B1 EP 1052663 B1 EP1052663 B1 EP 1052663B1 EP 00109259 A EP00109259 A EP 00109259A EP 00109259 A EP00109259 A EP 00109259A EP 1052663 B1 EP1052663 B1 EP 1052663B1
Authority
EP
European Patent Office
Prior art keywords
base
foil
pins
fact
printed circuit
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.)
Expired - Lifetime
Application number
EP00109259A
Other languages
English (en)
French (fr)
Other versions
EP1052663A3 (de
EP1052663A2 (de
Inventor
Marco Barile
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.)
Bitron SpA
Original Assignee
Bitron SpA
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Filing date
Publication date
Application filed by Bitron SpA filed Critical Bitron SpA
Publication of EP1052663A2 publication Critical patent/EP1052663A2/de
Publication of EP1052663A3 publication Critical patent/EP1052663A3/de
Application granted granted Critical
Publication of EP1052663B1 publication Critical patent/EP1052663B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0056—Apparatus or processes specially adapted for the manufacture of electric switches comprising a successive blank-stamping, insert-moulding and severing operation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/18—Energy stored by deformation of elastic members by flexing of blade springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5805—Connections to printed circuits
    • H01H2001/5811—Connections to printed circuits both fixed and movable contacts being formed by blank stamping and mounted or soldered on printed circuit board without any other housing elements

Definitions

  • This invention relates to a metal foil of a quick release switch, to its base and to its manufacturing process. Said switches are used for low power operation of all functions provided in a motor vehicle, controlled by the electronic component of the on-board electric installation.
  • the metal foil is composed of a plate on which the curved section obtained by shearing, is acting as an arch for foil release, from a first contact position to a second contact position, with the circuit to be monitored.
  • the metal foil must be mounted on a suitable spring support. Said spring support is mounted on the switch body. It is clear that mounting process requires at least two subsequent operations, the first comprising foil mounting on the support, the second support mounting on the switch body or on the printed circuit, depending on the type of switch used. This results in an increase in costs as well as more complex automatic mounting of the switches.
  • US-A-4950845 and GB 2131617 disclose a base-foil unit for low power switches used in motor vehicle electric circuits, formed by a unique metal plate. Nevertheless said unit do not comprise the electric contact and means for fixing in a releasable way said unit to a retainer or a base. Those components must be mounted in a subsequent operation. This again results in an increase of costs.
  • Another object of the present invention is to define a process for base-foil unit manufacturing according to present invention.
  • Said object of the present invention can be achieved by a base-foil unit for quick release switches presenting the characteristics of claim one.
  • Said additional object can be achieved by way of the present invention through a process for the manufacturing of a base-foil unit presenting the characteristics provided in claim 5.
  • FIG. 1 generally indicates a quick release type switch, presenting a container body 3 and a horizontally pivoting release key 4.
  • a printed electric circuit 6 is located inside body 3, with pins 8 for connection to the electric circuit (not illustrated) of the vehicle.
  • pins (10) are inserted on release in appropriate seats, blanked from a metal plate or foil.
  • Said metal plate is designed to create, as one piece and with the adequate profile and required bendings, a metal foil 13 with elastic arch 14, as well as the base of support 15.
  • Said foil 13 also includes a contact 16 designed to close other contacts on the printed circuit electrically, said contact being an integral part of the foil, to form a unit installed on release (by way of the pins) on printed circuit 6.
  • the key 4 is pivotally connected on 17 and any traction or pressure on said key, that creates a rotation in the clockwise or anticlockwise direction of sad key, is transmitted to foil 13 by way of projection 18, obtained in the key, that pushes lever 19 in body 3 of switch 1.
  • Foil 13 and base 15 are connected by way of an elastic hinge obtained in the metal foil by way of bending 20, obtained during processing.
  • the free end of arch 14, allowing the quick spring movement, is inserted in seats 21 obtained facing the latter, in noses 22 formed in base 15.
  • Lever 19 of chamber 3 exerts force on the foil in a point located inside the area defined by pins 10, so as to avoid creating rotating moments that could cause the release of the base from the printed circuit, damaging electric contact points provided by said pins (10).
  • the base-foil unit with relative release pins and slidable contact, can be obtained by way of a copper-beryllium alloy, of the type provided by the company NGK BERYLCO in Boulogne, France, for example, so as to ensure optimum mechanical-electrical results.
  • the base-foil unit manufacturing is achieved by way of the process described below.
  • a substantially reversed T-shaped profile is obtained by blanking a brass-beryllium plate of the appropriate thickness (0,15 mm, for example).
  • Said profile includes four pins 10 for coupling on release, in the seats of the printed circuit, located along the side of the head, designed to create the base 15, (fig. 4) and two noses 22 with seat 21 on each end.
  • the stem of the T forming the spring foil, presents two side arms 23, connected at the ends, and enclosing the arc-shaped section 14 of the foli.
  • the shaft end opposite of the head protrudes at the junction point of the arms to create the electric slidable contact 16 on printed circuit 6.
  • the following process involves the folding of the head section of the T, carried out essentially along two transversal lines to the head, A and B, equidistant from the ends, in order to create a closed structure with pins 10 located substantially at the vortex of an isosceles triangle.
  • the third and final operation involves shaft folding, close to the head, along line C, that is perpendicular to the latter.
  • the shaft is folded in such a way that the free end of the arc is inserted in seats 21 obtained in noses 22, connected via the previous folding operation.
  • the projection of slidable contact 16 will also be slightly arched to avoid any locking on the contact points of the printed circuit.
  • the process described is carried out with a unique mould that blanks the profile first, then creates the folds and hook-on mechanism of the arch.
  • the base-foil complex is then ready to be inserted, on release, in the appropriate seats obtained on the printed circuit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Manufacture Of Switches (AREA)
  • Laminated Bodies (AREA)
  • Push-Button Switches (AREA)

Claims (5)

  1. Aus einer Blattfeder und ihrer Halterung bestehende Einheit für Niederspannungs-Schnappschalter, die in elektrischen Anlagen von Kraftfahrzeugen für bordeigene Funktionen verwendet werden, wobei diese Schalter aus einem Behälter (3), einer Auslösetaste (4), die um eine horizontale Achse herum schwenkbar ist, und einer Leiterplatte (6) bestehen, wobei die aus einer Blattfeder und ihrer Halterung bestehende Einheit eine Schnappblattfeder (13), die mit einem elastischen Bogen (14) versehen ist, der in entsprechende Sitze eingerastet wird, und eine Halterung (15), mit der die Blattfeder auf der Leiterplatte angebracht ist, aufweist, und wobei die Halterung (15) aus einer einzelnen Metallplatte hergestellt ist, dadurch gekennzeichnet, dass diese einzelne Metallplatte die Form eines auf den Kopf gestellten T aufweist, wobei der Schaft die Blattfeder bildet und der Kopf die Halterung bildet, und entsprechend geformt und gefalzt ist, und dass sie einen elektrischen Kontakt (16) bildet und an der Halterung (15) Einschnappstifte (10) aufweist, wobei der Kontakt (16) und die Stifte (10) einen elektrischen Kontakt zu der Leiterplatte herstellen.
  2. Aus einer Blattfeder und ihrer Halterung bestehende Einheit nach Anspruch 1, dadurch gekennzeichnet, dass auf der Leiterplatte entsprechende Sitze (8) für die Stifte (10) vorhanden sind.
  3. Aus einer Blattfeder und ihrer Halterung bestehende Einheit nach Anspruch 1, dadurch gekennzeichnet, dass das Ende des Schaftes des T mit Nasen (22) versehen ist, in denen sich Sitze (21) befinden, in die das freie Ende des Bogens (14) eingerastet wird.
  4. Aus einer Blattfeder und ihrer Halterung bestehende Einheit nach Anspruch 1 und Anspruch 3, dadurch gekennzeichnet, dass sich die Stifte (10) im Wesentlichen am Scheitelpunkt eines gleichschenkligen Dreieckes befinden.
  5. Verfahren zur Herstellung einer aus einer Blattfeder und ihrer Halterung bestehenden Einheit nach Anspruch 1, gekennzeichnet durch folgende Schritte:
    Ausstanzen einer zuvor festgelegten T-Form aus einer Metallplatte von geeigneter Dicke;
    Falzen des T-Kopfes entlang zweier Linien, die quer zu dem Kopf verlaufen, dergestalt, dass die Halterung entsteht und die Stifte und die Nasen in einer zuvor festgelegten Position angeordnet werden, und
    Falzen des T-Schaftes dergestalt, dass die Blattfeder in Position gebracht wird, wobei der Bogen in die entsprechenden Sitze eingerastet wird.
EP00109259A 1999-05-14 2000-04-28 Aus einer Blattfeder und ihrer Halterung bestehende Einheit für einen Schnappschalter und Herstellungsverfahren Expired - Lifetime EP1052663B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO990401 1999-05-14
IT1999TO000401A IT1307691B1 (it) 1999-05-14 1999-05-14 Complesso base-lamina metallica per un interruttore a scatto rapidoe procedimento per la sua fabbricazione

Publications (3)

Publication Number Publication Date
EP1052663A2 EP1052663A2 (de) 2000-11-15
EP1052663A3 EP1052663A3 (de) 2002-10-09
EP1052663B1 true EP1052663B1 (de) 2004-06-30

Family

ID=11417808

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00109259A Expired - Lifetime EP1052663B1 (de) 1999-05-14 2000-04-28 Aus einer Blattfeder und ihrer Halterung bestehende Einheit für einen Schnappschalter und Herstellungsverfahren

Country Status (4)

Country Link
EP (1) EP1052663B1 (de)
DE (1) DE60011847T2 (de)
ES (1) ES2222133T3 (de)
IT (1) IT1307691B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2825510B1 (fr) * 2001-06-01 2003-09-26 Dav Ensemble de microcontact de signal implantable sur un circuit conducteur

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3243528A1 (de) * 1982-11-25 1984-05-30 Thermostat-und Schaltgerätebau GmbH & Co KG, 8730 Bad Kissingen Kontaktfeder fuer schnappschalter
US4950845A (en) * 1988-01-07 1990-08-21 Kojima Press Industry Co., Ltd. Switching device

Also Published As

Publication number Publication date
ITTO990401A0 (it) 1999-05-14
IT1307691B1 (it) 2001-11-14
ITTO990401A1 (it) 2000-11-14
EP1052663A3 (de) 2002-10-09
DE60011847T2 (de) 2005-07-14
EP1052663A2 (de) 2000-11-15
ES2222133T3 (es) 2005-02-01
DE60011847D1 (de) 2004-08-05

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