EP0818047B1 - Element de contact notamment pour commutateur electrique - Google Patents

Element de contact notamment pour commutateur electrique Download PDF

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Publication number
EP0818047B1
EP0818047B1 EP96909017A EP96909017A EP0818047B1 EP 0818047 B1 EP0818047 B1 EP 0818047B1 EP 96909017 A EP96909017 A EP 96909017A EP 96909017 A EP96909017 A EP 96909017A EP 0818047 B1 EP0818047 B1 EP 0818047B1
Authority
EP
European Patent Office
Prior art keywords
stamped
connection contacts
contact unit
contact
loop
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
EP96909017A
Other languages
German (de)
English (en)
Other versions
EP0818047A1 (fr
Inventor
Daniela Zuk
Willibald Lenhart
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.)
Eaton Controls GmbH and Co KG
Original Assignee
Eaton Controls GmbH and Co KG
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 Eaton Controls GmbH and Co KG filed Critical Eaton Controls GmbH and Co KG
Publication of EP0818047A1 publication Critical patent/EP0818047A1/fr
Application granted granted Critical
Publication of EP0818047B1 publication Critical patent/EP0818047B1/fr
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

Definitions

  • the invention relates to a contact unit, in particular for electrical switches, with a lead frame electrically conductive material, in which the electrical Punch paths representing current paths connected via webs and protruding connection contacts provided from the punching plane are, whereby the space between the punching tracks is smaller is the length of a connector.
  • Such contact units for electrical switches are known. 1 to 3 is a lead frame of such Contact unit shown. So that the contact unit and thus the switch gets a compact design, they are the ones Stamping paths representing current paths are arranged closely to one another net. The connection contacts are still on the lead frame, connected to the current paths inside the switch consist. The compact structure also for the area to get the connection contacts and order them there compact connector plug that accommodates several connection contacts To be able to use the connection contacts always in a predetermined close grid to each other. How from 1 can be seen, the space between the Punching lines not out, the connecting contacts in one piece on the To connect the lead frame. To keep the narrow grid spacing two techniques are usually used.
  • connection contacts made. With at least one the ends the punch webs of the overlapping contact plate the punch bars are connected, creating a one-piece Lead frame is created.
  • the connectors are with a contact surface for fastening to the lead frame manufactured. Connecting the connector with the Punched grids are usually made by welding or riveting. Every connection point is from the quality side to make high demands. For one thing, an adequate one electrical connection must be guaranteed, which in turn a high level of cleanliness of the parts is required before connecting is. On the other hand, the connection must also be mechanical have sufficient cohesiveness.
  • the invention has for its object a contact unit to create the kind mentioned in the one-piece Configuration has a compact structure, is inexpensive to manufacture and has the highest quality requirements corresponds.
  • Terminal contacts formed in one piece with the lead frame are, and the lead frame at least one in the longitudinal direction the terminal contacts has a lying loop that bends out of the contacts from the punch plane of the lead frame and a spacing of the contacts on predefined grid size enables.
  • the lead frame is with the connection contacts as a one-piece part in compliance with a predetermined, narrow grid size inexpensively while The highest quality standards can be met. There are therefore no additional work steps are required.
  • the stretched length of the loop the length of the the leadframe bent out and the Width of a clearance between the free end of the connection contacts and opposite areas of the lead frame in the longitudinal direction of the loop taking into account the Bending correction factor.
  • connection contacts In the lead frame are according to an advantageous development the invention in the bending direction of the loop connection contacts Opposite embedded at right angles from the lead frame bendable and by bending the loop on the desired grid dimensions can be brought. This can be done in grid dimensions the connection contacts arranged directly opposite become, i.e. the connection contacts do not have to be offset must have to each other.
  • At least two spaced apart in the lead frame, parallel to each other Punching tracks each have a loop. So that gets Lead frame a rigid and solid structure, which in the Assembly easier handling is made possible. By different Introducing the loop, offset or opposite, assembly errors are avoided.
  • connection contacts at least one contact strip, that on the punching tracks after punching as a contact point serves.
  • This configuration increases the requirements corresponded to the electrical resilience, whereby for making the more durable and electric better quality lead frames after punching no additional Operations are required, such as by riveting contact rivets.
  • the contact strips lie on the inlay or as a toplay Die cut strips in one direction. Because in the counter or on one Connection contact different electrical requirements it is necessary to meet these requirements to meet the presence of a certain contact material. However, to avoid applying too many contact strips having to incur costs is expedient by at least one loop in the punching path of the connection contact the contact point to the desired position brought.
  • connection contacts after positioning the contact points have the same length
  • the connector contacts embedded in the lead frame are different Length on. After positioning, the are Connection contacts of the same length and the turn can be made via a Bending edge take place.
  • connection contacts the same length. That's the way it is For example, necessary from a tooling point of view, thin cutting punches for reinforcement to make coherent, what a Offset of the cut edges leads. Therefore preferably get the different length of connection contacts by a Loop the same length.
  • a punching track has at least two loops through the at least one contact point and / or a connection contact is positioned.
  • the Grinding in the lead frame on the opposite of the connection contacts Page available. So there is an accommodation the loops inside the switch, which means no additional Measures are necessary to protect the loops from damage or to protect touch.
  • the leadframe representing the contact unit must still be in the individual current paths are separated, the die Current paths realizing punch bars electrically from each other must be fixed in isolation.
  • the handling of the contact unit should be done as part for cost reasons. thats why According to a development of the invention, the lead frame attached an insulating plastic part, according to the Fasten the lead frame between the webs of the lead frame the punching tracks are separated.
  • the fastening takes place of the lead frame on the plastic part by extrusion coating Plastic, the contact surfaces of the lead frame and the Terminal contacts are not overmolded, and being overmolded in a tool that produces the plastic part is carried out.
  • the lead frame held electrically insulated, and when molding at the same time the switch part that is required anyway, for example a base made.
  • a contact unit 1 which in its large extent from a essentially rectangularly shaped lead frame 2 consists.
  • the contacts 3 out.
  • the punched tracks 4 provide the current paths over webs 5 between the punching tracks 4 hang Punching tracks 4 together and thus form the lead frame 2.
  • the punched tracks 4 provide the current paths over webs 5 between the punching tracks 4 hang Punching tracks 4 together and thus form the lead frame 2.
  • the lead frame 2 In the plane of the lead frame 2 are diagonally opposite Retained holes 12 with which the lead frame 2 is positioned.
  • the stamping 14 in the Level of the lead frame 2 between the contacts 3 is by no means wide enough to match the length of the bent contacts 3 to be able to record.
  • the contact unit 1 2 consists of a right lead frame 6 and a left lead frame 7 on which the connection contacts are made in one piece 3 are present and bent. About the to the Long sides 8 continuous punching tracks 4a, 4b and 4c the right lead frame 6 is connected to the left lead frame 7. With the help of the width of the punch webs 4a, 4b and 4c corresponding contact plates 9, which on the top 10 of the Punching grids 6, 7 are welded onto the punching grids 6, 7 connected to the contact unit 1. An alternative to this is shown in Fig. 3. Here is the contact unit 1 from a flat continuous lead frame 2, on its underside 11 angled contacts 3 welded are.
  • a lead frame 2 for a contact unit 1 according to the invention is shown in Figure 4.
  • the lead frame 2 also has the openings 13 and holding holes 12.
  • the connection contacts 3 folded, which are integrally connected to the lead frame 2 are. Is between the free end of the contacts 3 enough space for the punching 14.
  • the outer Areas of the lead frame 2 in which the holding bore 12 and the openings 13 are provided are identical to that Punching grid 2 according to the prior art. Only the one the long sides 8 existing punching tracks 4a, 4b and 4c run longer, making the lead frame 2 a larger Has length.
  • FIGS 5 and 6 show the corresponding side views the contact unit made from the lead frame 2 of Figure 4 1.
  • the contacts 3 are from the level of Lead frame 2 bent out by 90 ° on the underside 11.
  • Punching strips 4a, 4b and 4c each have a U-shaped one Loop 15 on.
  • the bending direction of the loop lies here 15 in the longitudinal direction of the contacts 3, and the loop 15, or the punched strips 4a, 4b and 4c are made so long that a spacing of the contacts 3 on the predetermined grid dimension is enabled.
  • the legs 16 of the Loop 15 run at an acute angle to each other, causing Dip a bending punch forming loop 15 slightly and can be pulled out.
  • the stretched length of the loop 15 is equal to the length of the the lead frame 2 bent out contacts 3 plus the width of the clearance 14, which is between the free End of the contact 3 and the opposite part of the lead frame 2 is present. Only the Width of the clearance 14 in the longitudinal direction or bending direction the loop 15 is taken into account. When calculating the stretched length of the loop 15 will continue to be the bending correction factor considered.
  • connection contacts 3 opposite in the bending direction of the loop 15, and the bending edge 17 of the contacts 3 runs perpendicular to the long sides 8 of the lead frame 2.
  • the connection contacts 3 When calculating the stretched length of the loop 15 will always the opposite end of the free contacts 3 Part considered.
  • connection contacts 3 across from. The clearance 14 is thus the area between the free ends of the contacts 3.
  • Bars 5 attached in this area would have been used Consequence that on the one hand the webs 5 after bending the connection contacts 3 and after bending the loops 15 very much would be difficult to separate as they are no longer in one level would be present. If, on the other hand, between the punch bars 4a and 4b, the loops 15 are bent in different places so it would come alongside the first ones Difficulties in a delay between the punch webs 4a and 4b.
  • contact units 1 or lead frames 2 shows the transversely to the alignment of the connection contacts 3rd wear two contact strips 18 each.
  • the contact strip 18 is introduced in the manner of an inlay, as shown in the figures 11 and 13 emerges. But you can also use a toplay material use the contact material on the top 10 of the lead frame 2 is applied. Both rolled on Strips as well as an electroplated thin layer of strips come into use. After punching remain from the contact strip 18 only contact points 19 on the Punching tracks 4 of the lead frame 2, or the contact unit 1 obtained (see Fig. 9, 10 and 12).
  • the Lead frame 2 embedded contacts 3 a different Length.
  • the contact points 19 are still in the Area of the previously existing contact strip 18. Since on the Top 10 of the contact unit 1 different electrical Requirements exist to meet these requirements be taken into account with a contact point 19. In order to avoid that too many contact strips 18 are required, becomes the contact point by introducing a loop 15 19 moved in the lead frame 2 or the contact unit 1. This is clearly evident from FIG. 10 in the case of the introduction of three loops 15 from the contact points 19 the area of the contact loops 18 have been moved out. Consequently is taken into account on the one hand that on the top 10 different contact points 19 are required and on the other hand that 3 different at the connection contacts Contact points 19 are necessary. So that the connection contacts 3 in spite of everything, the loops 15 have the same length in the terminal contact feet 20 designed so that these requirements are fulfilled.
  • FIG. 11 and 13 represent side views of contact units 1.
  • they are rectangular in shape Loops 15 only in the direction of the bottom 11 of the contact unit 1 bent.
  • This state represents an intermediate status represents, in which the connection contacts 3 are not yet from the Level of the lead frame 2 were bent out. In the following Then the contacts 3 are bent out and added the further loops 15.
  • One too the contact unit 1 similar in FIG. 11 is in FIG. 13 shown that has already gone through this step and thus carries the loops 15 on the upper side 10.
  • the contact unit 1 is already at one Plastic part 21 attached.
  • the plastic part 21 is the Socket of a switch that does not have clip lugs 22 in one shown housing is supported.
  • the attachment of the Contact unit 1 in the electrically insulating plastic part 21 is made by overmolding with plastic in one Tool, the contact unit 1 in its holding holes 12 is adjusted.
  • the base gets its form of use directly.
  • the contact surfaces 23 and the connecting contacts 3 the contact unit 1 are not molded.
  • the connection contacts 3 protrude from the underside 24 of the plastic part 21 out and are protected by a plug collar 25.
  • the on the long sides 8 of the contact unit 1 in the direction of Top 10 curved loops 15 are also overmolded and thus protected.
  • the punching tracks 4 are in their individual after fastening Current paths separated. For this purpose, the webs 5 at separation points 27 punched out. Through different die cuts the webs 5 are thus still different Current paths can be implemented.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Switches (AREA)
  • Contacts (AREA)

Claims (13)

  1. Unité de contact, en particulier pour interrupteurs électriques, comportant une grille découpée en matériau électriquement conducteur, dans laquelle les pistes découpées représentant des voies de courant électrique sont reliées par des passerelles et des contacts de borne saillant du plan de découpe sont prévus, l'espace intermédiaire entre les pistes découpées étant plus petit que la longueur des contacts de borne, caractérisée en ce que les contacts de borne (3) sont formés d'une seule pièce avec la grille découpée (2) et la grille découpée (2) présente au moins une boucle (15) située dans la direction longitudinale des contacts de borne (3), boucle qui permet un pliage des contacts de borne (3) hors du plan de découpe de la grille découpée (2) et un espacement des contacts de borne (3) sur une dimension de grille prédéterminée.
  2. Unité de contact selon la revendication 1, caractérisée en ce que la longueur étirée de la boucle (15) correspond à la longueur des contacts de borne (3) pliés à l'extérieur de la grille découpée (2), et à la largeur d'une découpe (14) entre l'extrémité libre des contacts de borne (3) et des zones opposées de la grille découpée (2) suivant la direction longitudinale de la boucle (15), en tenant compte du facteur de correction de pliage.
  3. Unité de contact selon l'une des revendications 1 ou 2, caractérisée en ce que dans la grille découpée (2), suivant la direction de pliage de la boucle (15) sont noyés des contacts de borne (3) opposés qui peuvent être ressortis à angle droit de la grille découpée (2) et qui peuvent être amenés à la dimension de grille voulue par pliage de la boucle (15).
  4. Unité de contact selon la revendication 1 ou 2, caractérisée en ce qu'au moins deux pistes découpées (4a, 4b, 4c) espacées dans la grille découpée (2), s'étendant parallèlement entre elles, présentent chacune une boucle (15).
  5. Unité de contact selon l'une des revendications 1 à 4, caractérisée en ce qu'entre les pistes découpées (4a, 4b, 4c) présentant chacune une boucle (15) et les pistes découpées (4) mettant à disposition les contacts de borne (3) par pliage à l'extérieur, il n'existe aucune passerelle (5) reliant les pistes découpées (4, 4a, 4b, 4c).
  6. Unité de contact selon l'une des revendications 1 à 5, caractérisée en ce que transversalement à l'orientation des contacts de borne (3) s'étend au moins une bande de contact (18), qui sur les pistes découpées (4, 4a, 4b, 4c) sert de point de contact (19) après la découpe.
  7. Unité de contact selon la revendication 6, caractérisée en ce que le point de contact (19) est amené à la position voulue par au moins une boucle (15) dans la piste découpée (4) du contact de borne (3).
  8. Unité de contact selon l'une des revendications 6 ou 7, caractérisée en ce que les contacts de borne (3) noyés dans la grille découpée (2) présentent une longueur différente.
  9. Unité de contact selon l'une des revendications 6 à 8, caractérisée en ce que les contacts de borne (3) de longueurs différentes reçoivent la même longueur par une boucle (15).
  10. Unité de contact selon l'une des revendications 1 à 9, caractérisée en ce qu'une piste découpée (4, 4a, 4b, 4c) possède au moins deux boucles (15) par laquelle au moins un point de contact (19) et/ou un contact de branchement (3) est positionné.
  11. Unité de contact selon l'une des revendications 1 à 10, caractérisée en ce que les boucles (15) se trouvent dans la grille découpée (2) sur le côté opposé aux contacts de borne (3).
  12. Unité de contact selon l'une des revendications 1 à 11, caractérisée en ce que la grille découpée (2) est fixée sur un élément en matière plastique isolant (21), les passerelles (5) de la grille découpée (2) étant séparées entre les pistes découpées (4, 4a, 4b, 4c), après fixation de la grille découpée (2).
  13. Unité de contact selon l'une des revendications 1 à 12, caractérisée en ce que la fixation de la grille découpée (2) sur l'élément en matière plastique (21) s'effectue par enrobage de matière plastique injectée, les surfaces de contact (23) de la grille découpée (2) et les contacts de borne (3) n'étant pas enrobés, et l'enrobage étant exécuté dans un outil réalisant l'élément en matière plastique (21).
EP96909017A 1995-03-31 1996-03-27 Element de contact notamment pour commutateur electrique Expired - Lifetime EP0818047B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19511877A DE19511877A1 (de) 1995-03-31 1995-03-31 Kontakteinheit, insbesondere für elektrische Schalter
DE19511877 1995-03-31
PCT/DE1996/000607 WO1996030918A1 (fr) 1995-03-31 1996-03-27 Element de contact notamment pour commutateur electrique

Publications (2)

Publication Number Publication Date
EP0818047A1 EP0818047A1 (fr) 1998-01-14
EP0818047B1 true EP0818047B1 (fr) 1999-08-04

Family

ID=7758288

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96909017A Expired - Lifetime EP0818047B1 (fr) 1995-03-31 1996-03-27 Element de contact notamment pour commutateur electrique

Country Status (4)

Country Link
EP (1) EP0818047B1 (fr)
DE (2) DE19511877A1 (fr)
ES (1) ES2136394T3 (fr)
WO (1) WO1996030918A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19833983A1 (de) * 1998-07-29 2000-02-03 Ego Elektro Geraetebau Gmbh Verfahren zur Herstellung eines elektrischen Schaltgeräts und elektrisches Schaltgerät
DE20009835U1 (de) 2000-05-31 2000-09-21 Magna Zippex GmbH, 74374 Zaberfeld Ausbildung der Schaltkontaktierung an einer schwenkbaren Vorrichtung im Innenraumbereich eines Fahrzeuges
DE102007034389B4 (de) * 2007-07-24 2022-03-31 Kostal Automobil Elektrik Gmbh & Co. Kg Mehrpoliger elektrischer Steckverbinder

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1184015B (de) * 1963-03-13 1964-12-23 Siemens Ag Verfahren zur Herstellung von Eisenkreisteilen fuer gekapselte magnetisch steuerbare Kontaktvorrichtungen
US3268701A (en) * 1964-04-22 1966-08-23 Alloys Unltd Inc Clad electrical contacts
DE2031025A1 (de) * 1970-06-23 1971-12-30 Siemens Ag Kontaktfedersatz
DE2145584A1 (de) * 1971-09-13 1973-03-22 Philips Patentverwaltung Verfahren zum herstellen eines kontaktschalters mit mehreren parallel zueinander angeordneten kontaktfedern
DE7145740U (de) * 1971-12-04 1972-03-23 Swf Spezialfabrik Rau G Gmbh Schaltereinheit, insbesondere Lenkstockschaltereinheit eines Kraftfahrzeuges
GB1493377A (en) * 1974-10-17 1977-11-30 Amp Inc Electrical lead frame
US4419640A (en) * 1979-12-17 1983-12-06 Omron Tateisi Electronics Co. Unitary contact-terminal blades integrally formed in a molded base
US4297671A (en) * 1980-06-11 1981-10-27 Cts Corporation Tandem insert molded electrical controls and process for producing same

Also Published As

Publication number Publication date
EP0818047A1 (fr) 1998-01-14
ES2136394T3 (es) 1999-11-16
DE59602630D1 (de) 1999-09-09
WO1996030918A1 (fr) 1996-10-03
DE19511877A1 (de) 1996-10-02

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