EP0464074A1 - Dispositif de contact a fiches - Google Patents

Dispositif de contact a fiches

Info

Publication number
EP0464074A1
EP0464074A1 EP90904818A EP90904818A EP0464074A1 EP 0464074 A1 EP0464074 A1 EP 0464074A1 EP 90904818 A EP90904818 A EP 90904818A EP 90904818 A EP90904818 A EP 90904818A EP 0464074 A1 EP0464074 A1 EP 0464074A1
Authority
EP
European Patent Office
Prior art keywords
contact
bores
printed circuit
circuit boards
arrangement according
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Withdrawn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
EP90904818A
Other languages
German (de)
English (en)
Inventor
Egon Hildebrandt
Achim Walz
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.)
Hildebrandt Egon
Walz Achim
Original Assignee
Wincor Nixdorf International 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 Wincor Nixdorf International GmbH filed Critical Wincor Nixdorf International GmbH
Publication of EP0464074A1 publication Critical patent/EP0464074A1/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Withdrawn legal-status Critical Current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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/193—Means for increasing contact pressure at the end of engagement of coupling part, e.g. zero insertion force or no friction
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/306—Lead-in-hole components, e.g. affixing or retention before soldering, spacing means

Definitions

  • the invention relates to a plug contact arrangement of the type mentioned in the preamble of claim 1 and claim 12.
  • DAS * '' area of the test adapter for testing printed circuit boards Another application in which conventional contact arrangements are unsatisfactory, DAS * '' area of the test adapter for testing printed circuit boards.
  • the circuit boards to be tested generally have a very high density of conductor tracks and components, so that the number of test points is very large.
  • an adapter plate In the test adapters, an adapter plate must be fitted with test pins to match the test points on the printed circuit board, which are in turn connected to the test circuit.
  • cables are soldered to the lower ends of the test needles, which lead to the test circuit. Setting up such test adapters is extremely lengthy and, because of the confusion of the large number of cables to be handled, leads to errors that are difficult to detect and to remedy.
  • This object is achieved according to the invention by a contact arrangement having the features described in claim 1 or the features described in claim 12.
  • the contact arrangements according to the invention are so-called force-free plug-in connections, since the contact bores each have a clear width which is larger than the outer dimensions of the plug feet or contact wires to be received by these contact bores. These can therefore be inserted into the contact holes without any effort.
  • Figure 1 shows schematically a flat cable connector provided with plug feet, which is connected to a circuit board
  • Figure 2 shows a detail A from Figure 1;
  • FIG. 3 schematically shows another exemplary embodiment of a flat cable plug provided with plug feet, which is connected to a printed circuit board;
  • FIG. 4 shows two printed circuit boards, each of which is equipped with an electrical component provided with plug feet, and a device for contacting the two printed circuit boards with one another;
  • FIG. 5 shows in perspective an arrangement approximately according to FIG. 4 with one device different from this for contacting the two printed circuit boards with one another;
  • Figure 6 schematically shows a contact arrangement for
  • FIG. 7 shows a detail B from FIG. 6
  • FIG. 8 shows a contact arrangement for contacting the test needles of a test adapter with a test circuit
  • FIG. 9 shows the contact arrangement according to FIG. 8 in a different operating position
  • Figure 10 schematically shows a detail from the
  • FIG. 11 schematically shows another exemplary embodiment of an arrangement according to FIG. 10;
  • Figure 12 schematically shows a contact arrangement for
  • Figures 13 u. 14 each have a cross section through a
  • Fig. 17 shows a contact arrangement with a
  • Component provided with plug feet which can be connected to a receptacle housing which can be placed on a printed circuit board, in a side view;
  • FIG. 18 shows a contact arrangement according to FIG. 17 in a top view
  • FIG. 21 shows the contact arrangement according to FIG. 20 in a top view
  • 22 u. 23 shows an exemplary embodiment for contacting one circuit board with another; 24 u. 25 a round plug in an insertion position or a contact position.
  • Figure 1 shows a flat cable connector 1, which is divisible in a division line 2 and in which a flat cable 3 can be inserted in a known manner; when the two parts of the flat cable connector 1 are assembled, the connector feet 4 are contacted by the self-tapping contacts with the wires of the flat cable 3.
  • the circuit board 5 is provided with contact holes 6, which serve to receive the plug feet 4.
  • the inner surfaces of the contact bores 6 are each galvanically provided with conductive material (so-called vias), which are connected to conductor tracks (not shown here) on the surface of the printed circuit board 5.
  • the flat cable connector 1 is provided with latching elements 8 which protrude through latching bores 9 in the printed circuit board 5 and engage behind them on the underside of the printed circuit board 5.
  • the locking elements 8 are approximately mushroom-shaped.
  • the heads of the mushroom-shaped locking elements are aligned with the bores 9 so that they can pass through them.
  • the plug feet 4 are also aligned with the contact bores 6.
  • the contact holes 6 have a clear width that is larger than the outer dimensions of the plug feet 4. The flat cable connector 1 can therefore be plugged onto the circuit board 5 without any forces.
  • the flat cable connector 1 is in the direction of arrow 10 essentially displaced transversely to the longitudinal orientation of the plug feet 4, the heads of the mushroom-shaped locking elements 8 engaging behind the locking bores 9 (see FIG. 1).
  • the plug feet 4 are deflected laterally and tilted in the contact holes 6 so that they come into contact with the upper or lower inner edge of the contact holes 6.
  • At least one of the feet 11 of the flat cable connector is provided on its underside with a projection 12 which, when the flat cable connector 1 is displaced in the direction of arrow 10, behind one on the upper side of the printed circuit board 5 protrusion 13 engages, as can be seen in FIG. 2, which shows detail A from FIG. 1 in an enlarged illustration.
  • FIG. 3 again shows a flat cable plug 15 with plug feet 16 which engage in contact bores 17 in a printed circuit board 18.
  • the flat cable connector 15 is connected in a manner not specified to a component 19, for example a device wall.
  • the flat cable connector 15 is aligned so that the plug feet 16 are exactly aligned with the contact bores 17.
  • the component 19 and the printed circuit board 18 are displaced relative to one another transversely to the longitudinal orientation of the plug feet 16, the plug feet 16 being laterally deflected and tilted in the contact bores 17 such that they are in each case between the upper and lower inner edge of the associated contact hole 17 are clamped, whereby on the one hand the contact with the contact bores 17 or the metallic inner surfaces lining them 20 and on the other hand the firm mechanical hold in these vias 20 is ensured.
  • FIG. 4 shows an arrangement with two circuit boards 22, 23 parallel to one another.
  • An electrical component 25, for example a memory module, provided with plug feet 24 is mounted on the circuit board 22 in a manner similar to that described with reference to FIG.
  • the component 25 is first aligned with the printed circuit board 22 so that the plug feet 24 are aligned with the contact bores 26. After the force-free insertion, the component 25 is moved in the direction of the arrow 27, the connector feet 24 contacting the contact bores 26 in the manner already described.
  • an electrical component 28, for example a computer module is mounted on the printed circuit board 23, the plug feet 29 of the component 28 contacting the contact bores 30 of the printed circuit board 23.
  • a further component 31 is arranged between these circuit boards 22, 23, which has the shape of a plate parallel to the circuit boards 22, 23.
  • This component carries contact feet 32 which engage on the one hand in contact bores 26a of the printed circuit board 22 and on the other hand in contact bores 30a of the printed circuit board 23.
  • component 31 is first aligned such that the plug feet are exactly aligned with the associated contact bores 26a and 30a. After the plug feet 32 have been inserted into the associated contact bores, the component is moved in the direction of the arrow 33, the plug feet 32 being securely contacted in the manner already described with the associated contact bores 26a, 30a.
  • FIG. 5 shows an arrangement similar to FIG.
  • contact wires 42 are inserted through these aligned bores and component 38 is displaced, for example, in the direction of arrow 43, whereby contact wires 42 are laterally deflected and respectively tilted in the associated contact bores 39 and 40 so that in the an electrical contact and a mechanical fixation can be produced.
  • FIG. 6 shows a contact arrangement for contacting perpendicular printed circuit boards.
  • the circuit board 45 serves, for example, as a so-called wiring rear wall, to which the circuit boards 46, 47 are perpendicular.
  • a component 49 provided with plug feet 48 is connected to the printed circuit board 46 in the manner already described with reference to FIG. 1, the plug feet 48 being contacted with the contact bores 50 of the printed circuit board 46.
  • the plug feet 48 are connected to these plug feet 51, which are approximately at right angles and which in turn engage in contact bores 52 in the printed circuit board 45. Contacting the plug feet 48 with the contact holes 50 of the printed circuit board 46 takes place by moving the component 49 in the direction of the arrow 53, in the manner already described with reference to FIG. 1 and not shown again in detail here.
  • the contacting of the plug feet 51 with the contact bores 52 takes place by displacing the printed circuit board 45 in the direction of the arrow 54.
  • the printed circuit board 47 is connected to the printed circuit board 45 via the component 55 with the plug feet 56 and 57.
  • FIG. 7 shows detail B from FIG. 6 in an enlarged representation. It can be seen that the contact foot 56 is tilted by its deflection transversely to its longitudinal orientation in the contact bore 58 such that it has an upper inner edge 59 and a lower inner edge 60 of the metal-lined through-contact 61 of the contact bore 58 comes into intensive contact, so that on the one hand an electrical contact is made and on the other hand mechanical hold of the plug base 56 in the contact bore 58 is guaranteed. As particularly shown in FIG. 6, the plated-through holes are each connected to conductor tracks formed on the printed circuit boards, as is known and is therefore not explained in detail.
  • FIG. 8 shows a contact arrangement which is used in particular to connect the test pins 63 of a test adapter 64 to a test circuit (not shown).
  • Test adapters for testing printed circuit boards generally have the following structure: Test pins 63 are fixedly arranged in a predetermined pattern in a mounting plate 65, the resilient test tips 66 pointing upward. Above the mounting plate 65 there is a support plate 67 on which the circuit board to be tested with the test points to be contacted is placed down. The support plate 67 with the printed circuit board arranged thereon can be moved downward against the force of the spring 68, the test points resting on the test probes 66.
  • test pins 63 carry plug feet or contact wires 69 which, in the present exemplary embodiment, pass through contact bores 70, 71, 72, which are aligned with one another, of the printed circuit boards 73, 74, 75 arranged parallel to one another.
  • the middle printed circuit board 74 is mounted in the test adapter 64 so as to be displaceable in the direction of the double arrow 76.
  • the contact wires 69 of the test pins 63 are inserted through the associated contact bores 70, 71, 72 of the printed circuit boards 73, 74, 75.
  • the number of contacts of the individual test pins 63 can largely be increased as desired.
  • the middle printed circuit board 74 is displaced, for example, by one perpendicular to the plane the axis of rotation 77 of the printed circuit boards rotatable eccentric cam 78 which engages in an elongated hole 79 in the printed circuit board 74 which is aligned transversely to the displacement direction 76.
  • the eccentric cam 78 is adjusted, for example, manually using a handle 80 which is connected to the shaft 81 which carries the eccentric cam 78.
  • the contact bores 70, 71, 72 are each connected to conductor tracks 82, 83, 84 arranged on the associated printed circuit boards 73, 74, 75, which lead to plug connectors 85 arranged on the edge of the printed circuit boards, via which a connection to the test circuit is possible.
  • FIG. 10 shows schematically the middle printed circuit board 74 from FIGS. 8 and 9.
  • the eccentric cam 78 is adjustable on a circular path 86 and takes the printed circuit board 74 along in the direction of the double arrow 76.
  • the circuit board 74 is guided exactly parallel through elongated holes 87 aligned parallel to the double arrow 76, through which vertical connecting struts 88 of the test adapter 64 pass (see also FIG. 8).
  • FIG. 11 shows an exemplary embodiment in which a printed circuit board 74a is adjustable on a circular path lying in its plane.
  • Two circular eccentric cams 89, 90 are each synchronously adjustable on circular paths 91, 92.
  • the connecting struts 88a reach through circular guide holes 87a in the printed circuit board 74a and contribute to the correct guidance of the printed circuit board 74a.
  • FIG. 12 shows a contact arrangement in which three circuit boards 95, 96, 97 arranged in parallel to one another are to be contacted. They are provided with contact bores 98, 99, 100 which are aligned with one another and through which a contact wire 101 is inserted, which is straight during this insertion process.
  • the contact bores 98, 99, 100 have an internal width which is larger than the outer dimensions of the contact wires 101, so that the contact wires 101 are inserted without force.
  • Devices 102, 103 for lateral deflection of the contact wires 101 are arranged between the printed circuit boards 95 and 96 on the one hand and 96 and 97 on the other hand.
  • the devices 102, 103 have the form of flat plates which are provided with through bores 104 and 105, respectively, which are distributed in an arrangement pattern corresponding to the arrangement pattern of the contact bores of the printed circuit boards 95, 96, 97.
  • the device 102 To contact the circuit boards with one another, the device 102 is moved in the direction of the arrow 106 and the device 103 in the direction of the arrow 107, as a result of which the contact wire 101 is laterally deflected in the manner shown in FIG. 12 and thus tilted in the associated contact holes 98, 99, 100 is that an electrical contact is made in the manner already described.
  • the contact wires 101 are fastened to a holding plate 108, in which their ends are inserted into blind bores 109 and soldered therein.
  • the holding plate 108 itself can be designed as a printed circuit board, as indicated by the conductor track 110 arranged thereon.
  • FIG. 13 and FIG. 14 each show a cross section through a plug base or a contact wire, for example the contact wire 101 from FIG. 12.
  • the contact wires each have one polygonal cross section with sharp cutting edges 111 and 112 running along surface lines.
  • the contact wires are advantageously made of spring steel and are gold-plated.
  • FIG. 15 shows an arrangement roughly according to FIG. 5, in which a circuit board 200 to be tested is to be contacted, for example, with a first contact plate 201 and a second contact plate 202.
  • the circuit board to be tested is equipped with electronic components 203.
  • the printed circuit board 200 to be tested has contact holes 204, the first contact plate 201 has contact holes 205 and the second contact plate 202 has contact holes 206, which can each be aligned with the contact holes of the other plates.
  • Contact wires 207 are threaded into these contact bores 204, 205 and 206.
  • a guide plate 208 is arranged between the printed circuit board 200 and the first contact plate 202 and is provided with guide bores 209 arranged in the grid of the contact bores of the printed circuit board 200 and the first contact plate 201. It can be seen that the contact bores 209 are designed downwards as funnel-shaped catch bores in order to facilitate catching the contact wires 207 during the threading process.
  • the guide plate 208 can be moved up and down in the direction of the arrow 210 and can be locked at least in its lower and upper position.
  • FIG. 16 shows a threading process for the purpose of testing a printed circuit board 200.
  • the guide plate 208 is shown in its upper position in FIG. 16A.
  • the funnel-shaped guide bores 209 allow the contact wires 207 to be threaded even in the event of a slight misalignment of these contact wires.
  • the printed circuit board 200 is placed on the guide plate 208 and precisely aligned to it on the one hand and the printed circuit board on the other hand, so that the contact bores 204 of the printed circuit board 200 are exactly aligned with the guide bores 209 of the guide plate 208 (see Fig. 16B).
  • the guide plate 208 is lowered, so that the circuit board 200 can also be moved into a somewhat lowered test position, in which the contact wires 207 completely penetrate the contact holes 204. Then, by mutual transverse adjustment of the contact plate 201 to the printed circuit board 200 in the manner described above, a contact can be made, the guide bores 209 of the completely lowered guide plate 208 not obstructing an inclined position of the contact wires 207, in particular to the printed circuit board 200.
  • 17 shows an electronic component 301 provided with plug feet 300.
  • the component 301 is provided with a rectangular flange 302 which can be inserted into a receiving groove 303 of a receiving housing 304 assigned to the component 301.
  • the receptacle housing 304 has a base plate 305 which is provided with through bores 306 which are widened in a funnel shape for the passage of the plug feet 300.
  • a cam 308 is formed on the rectangular flange 302 of the component 301 on a side edge 307, as the top view in FIG. 17A of the component 301 shows in particular.
  • the cam 308 lies in a recess 309 in the side edge of the receiving housing 304 assigned to the side edge 307 and extends into a channel 310 running parallel to the side edge 307, in which a channel provided with a cam curve 311 Sliding lock 312 is slidably arranged (see also Fig. 18).
  • the receptacle housing 304 is first placed on a printed circuit board 313 and aligned and fastened thereon by means of centering pins 314.
  • the component 301 is then inserted into the receiving housing 304 from above, the connector feet 300 being threaded into the contact bores 315 of the printed circuit board 313 via the through-bore 306 designed as a collecting funnel.
  • the cam 308 lies in the recess of the slide latch 312 defined by the cam curve 311.
  • the length of the plug feet 300 is, for example, ten times the depth of the contact holes 315, so that the force applied to them in the upper area of the plug feet 300 is increased to a ten times greater contact force in the area of the contact holes due to the leverage effect .
  • FIG. 21 shows the arrangement according to FIG. 19 in a top view.
  • a contact arrangement 402 which consists of a component 404 provided with plug feet 403 and a receptacle housing 405.
  • the component 404 which is connected in a suitable manner to the printed circuit board 400 and the circuit elements arranged thereon, is used for contacting in the component 405 connected to the printed circuit board 401, the plug feet 403 via the funnel-shaped through-bores formed in the base plate 406 of the receptacle housing 405 407 caught and threaded into the contact bores 408 of the circuit board 401.
  • the component 404 can be displaced, for example, by hand relative to the receiving housing 405 in the direction of the arrow 409 and can be locked with the latter by a latching element 410.
  • An actuating tab 411 serves to release the latching element 410.
  • the upper component 404 can also be designed, for example, as a housing for receiving a ribbon cable, so that a construction corresponding to the construction shown in FIGS. 22 and 23 can also be used to connect flat cables to cables terplatten is usable.
  • the plug housing 502 has at its lower end an axial ring flange 503, into which an insert 504 for holding the plug feet 505 is inserted on the inside.
  • An adjustment ring 506 is rotatably mounted on the axial ring flange 503, the inner contour of which is eccentric to the outer contour in the upper region mounted on the ring flange.
  • an axially displaceable insert 510 is arranged in the plug housing, which is pressed axially outwards by a compression spring 512 and corresponds approximately to the receptacle housing of the preceding exemplary embodiments. It has a base 516 provided with funnel-shaped catch bores 514.
  • the socket housing 507 has an insert 508 at its front end, which has contact sockets 509 for receiving the plug feet 505.
  • the insert 510 penetrates the insert 508 and is pressed inward against the force of the spring 512, so that the plug feet 505 enter the contact sockets 509.
  • the entire socket 501 is laterally displaced in the direction of the arrow 510 with respect to the plug 500, so that the plug feet 505 are deflected and tilted in the socket openings 509 and thus tilted be contacted.
  • the ratio of the length of the plug feet 505 to the penetration depth of the plug feet 505 in the contact bores 509 in turn determines the amplification of the adjusting force applied to a contact force that is substantially greater in comparison.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

La présente invention concerne un dispositif de contact pour établir un contact électrique entre les bases (4) de la fiche d'un composant électrique (1) et les alvéoles formées dans un autre composant électrique (5). Afin de pouvoir introduire sans forcer les bases (4) de la fiche dans les alvéoles correspondantes (6), le diamètre de ces dernières est plus grand que le diamètre externe des bases correspondantes (4) de la fiche. Pour établir ledit contact électrique, on rapproche les deux composants électriques (1 et 5) l'un vers l'autre de manière sensiblement perpendiculaire à l'orientation des bases (4) de la fiche, puis on arrête le déplacement, de sorte que les bases (4) de la fiche sont déviées de côté et se retrouvent prises entre le bord interne supérieur et le bord interne inférieur des alvéoles (6).
EP90904818A 1989-03-21 1990-03-21 Dispositif de contact a fiches Withdrawn EP0464074A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3909284A DE3909284A1 (de) 1989-03-21 1989-03-21 Steckkontaktanordnung
DE3909284 1989-03-21

Publications (1)

Publication Number Publication Date
EP0464074A1 true EP0464074A1 (fr) 1992-01-08

Family

ID=6376873

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90904818A Withdrawn EP0464074A1 (fr) 1989-03-21 1990-03-21 Dispositif de contact a fiches

Country Status (5)

Country Link
US (1) US5217383A (fr)
EP (1) EP0464074A1 (fr)
JP (1) JPH04502834A (fr)
DE (1) DE3909284A1 (fr)
WO (1) WO1990011630A1 (fr)

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US6217361B1 (en) 1999-02-26 2001-04-17 The Whitaker Corporation Zip socket having movable frame
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Also Published As

Publication number Publication date
US5217383A (en) 1993-06-08
JPH04502834A (ja) 1992-05-21
WO1990011630A1 (fr) 1990-10-04
DE3909284A1 (de) 1990-09-27

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