EP0278295B1 - Connecteur miniature et son procédé de fabrication - Google Patents

Connecteur miniature et son procédé de fabrication Download PDF

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Publication number
EP0278295B1
EP0278295B1 EP88100976A EP88100976A EP0278295B1 EP 0278295 B1 EP0278295 B1 EP 0278295B1 EP 88100976 A EP88100976 A EP 88100976A EP 88100976 A EP88100976 A EP 88100976A EP 0278295 B1 EP0278295 B1 EP 0278295B1
Authority
EP
European Patent Office
Prior art keywords
foils
plug
contact
socket
connector
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
EP88100976A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0278295A1 (fr
Inventor
Pierre-André Meyrat
Alain Oppliger
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.)
Nivarox Far SA
Original Assignee
Nivarox Far SA
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 Nivarox Far SA filed Critical Nivarox Far SA
Priority to AT88100976T priority Critical patent/ATE69523T1/de
Publication of EP0278295A1 publication Critical patent/EP0278295A1/fr
Application granted granted Critical
Publication of EP0278295B1 publication Critical patent/EP0278295B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/04—Pins or blades for co-operation with sockets
    • H01R13/05—Resilient pins or blades
    • H01R13/052—Resilient pins or blades co-operating with sockets having a circular transverse section
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/7005—Guiding, mounting, polarizing or locking means; Extractors
    • H01R12/7011—Locking or fixing a connector to a PCB
    • H01R12/707—Soldering or welding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/73—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures connecting to other rigid printed circuits or like structures
    • H01R12/735—Printed circuits including an angle between each other
    • H01R12/737—Printed circuits being substantially perpendicular to each other

Definitions

  • the present invention relates to a miniature connector, in particular for printed circuits and to a method of manufacturing such a connector.
  • the invention aims to create a connector for printed circuits provided with components called “Surface Mounted Devices” or “S.M.D.” (surface mount components or SMD) and produced using a recent assembly technique.
  • S.M.D surface mount components
  • the electronic components placed on the printed circuit do not include connection wires requiring drilling in the circuit plate, but they are provided with flat contact pads intended for soldering.
  • the solder material is formed by a paste made of a regular round or elliptical tin granule and it is deposited on the plate at the places where solderings must be made.
  • the components are then connected to the conductors of the printed circuit by heating in a steam bath brought to 200 ° C., for example. This operation melts the microbeads of tin which then link the studs of the component to the printed conductors with which the component must make contact.
  • Printed circuits made according to this technique can house more components per unit area than conventional circuits, in particular due to the fact that the components can be smaller.
  • Other advantages of S.M.D. are better circuit reliability and shorter switching times.
  • one of the difficulties encountered in producing miniature multi-contact connectors lies in obtaining good alignment between the male and female contact elements, when the connectors are connected. Two parts of the connector on top of each other. In fact, the smaller the dimensions, the more the inevitable manufacturing inaccuracies risk disturbing the alignment of the contact elements and increasing the relative lateral deviation of a female element and a male element.
  • the pitch between two adjacent contacts is only 1.27 mm, it has been found that the conventional arrangements usually provided to overcome this difficulty are no longer sufficient, since even a single connection of the connector can then cause a break in one or more contact elements. Such a break is easily explained if we consider that the contact elements have an extremely small width and thickness (resp. 1 mm and 0.1 mm in practice, for example).
  • the invention aims to solve this problem.
  • the miniature connector according to the invention is defined in claim 1.
  • the method of manufacturing such a miniature connector is defined in claim 9.
  • the contact member of the plug occupies a rigid position only with respect to the second insulating block after connection of the two parts of the connector, this contact member assumes the appropriate position by absorbing any misalignment by relative to the contact member of the socket, in which the female contact member is, on the contrary, always rigidly positioned.
  • the latter essentially comprises two parts, one constituting a plug 1 and the other a socket 2, and at least one set of contacts 3 composed of a male contact member 4 and a female contact member 5.
  • the miniature connector comprises several sets of contacts 3, these are preferably juxtaposed so as to be able to be plugged in common.
  • this juxtaposition can be carried out in the plane of the paper (solution which is not shown) or else perpendicular to the plane of the drawing (solution adopted here and visible in FIG. 2).
  • the socket 2 which comprises two insulating blocks 2a and 2b made of a plastic material and assembled by ultrasound for example.
  • the insulating block 2a close to the plug 1, has for each set of contacts 3 a frustoconical orifice 6 defining an axis XX and flaring in the direction of this plug 1.
  • the block 2b distant from the plug 1, has a cavity cylindrical 7, coaxial with the frustoconical orifice 6.
  • the female contact member 5 is taken between the blocks 2a and 2b during the assembly of the socket 2.
  • This contact member 5 is formed by a metal strip 8 in the form L whose longest branch 8a is clamped between blocks 2a and 2b and whose short branch 8b extends along the outer surface of block 2b.
  • the block 2b has two grooves 9a and 9b intended to receive the branches 8a and 8b of the strip 8 respectively.
  • the metal strip 8 has a circular orifice 10 which is connected, on the face of this branch opposite to the block 2a, to a barrel 11 which is pushed back into the material of the strip and which extends into the cylindrical cavity 7.
  • the block 2a also has a peripheral clearance 12 interrupted at one of the small faces of this block by a positioning lug 13 ( Figure 2).
  • sheet 1 The construction of sheet 1 is as follows.
  • the joint plane of the two blocks is oriented perpendicularly to the joint plane of the blocks 2a and 2b of the socket 2.
  • the joint plane of the plug 1 contains the axis XX, while that of the socket 2 is perpendicular to this axis.
  • the card in its assembled configuration, it has a passage 14 whose section is of variable dimensions along the axis X-X, while having a rectangular shape over its entire length.
  • the passage comprises first of all a part 15 which narrows towards the outside, this part being connected to a middle part 16 which constitutes a cavity from two opposite walls from which extend positioning pins 17.
  • the middle part 16 is connected to an end part 18 of the passage 14.
  • the male contact member 4 comprises two elastic conductive strips 19a and 19b which are of identical shape and which extend in an antagonistic position relative to one another in the passage 14.
  • each elastic strip has the overall shape of a spoon with a spoon 20 and a sleeve 21 folded so as to form an intermediate strip 22a and a rear strip 22b connected to each other by a recess 23.
  • the spoon 20 has an edge whose front part 20a is rounded and constitutes a support zone for the elastic strip and whose side parts 20b are rectilinear. These lateral parts 20b are connected by curved portions 20c to raised lateral edges 24 of the intermediate strip 22a.
  • the bottom of the spoon 20 is inclined forward relative to the plane (perpendicular to the plane of the drawing in FIG. 1) containing the surfaces 25 through which the rear strips 22b are applied to each other when the connector is in its connected configuration.
  • This inclination is manifested both in this configuration (FIG. 1) and in the configuration disconnected from the connector (FIG. 6), although this inclination is more pronounced in the first case than in the second. The reason is that, in FIG. 6, the strips are free and their spoons separated from one another.
  • these spoons are brought closer to one another to present a portion of electrical contact surface 26 to the female contact member.
  • the behavior of the elastic strips 19a and 19b will be explained subsequently when the connector is connected and disconnected.
  • the contact surface portion 26 defined on the outer face of each spoon is located approximately at the point where the latter begins to shrink backwards by connecting to the intermediate strip 22a.
  • Figure 4 shows the profile of the spoon at this location
  • Figure 5 shows the lamella profile at the exact point of connection of the spoon to the intermediate strip.
  • the extent of the contact surface 26 is not very well defined, because given the extremely small dimensions and thickness of each strip, the deformation which it undergoes during connection can be different from one slat to another.
  • the shape of the male contact member that has just been described has proved to be extremely effective in terms of the quality of the electrical contact obtained.
  • a holding hole 27 is provided in the intermediate strip 22a near the recess 23. It can be seen in FIG. 1 that the diameter of this hole 27 is larger than the diameter of the section of the positioning pins 17.
  • the height of the section of the end part 18 of the passage 14 is greater than the total thickness of the two rear strips 22b superimposed of the two strips 19a and 19b when these are in place in sheet 1.
  • the width of the rear strip 22b of each strip 19a or 19b is less, not only to the rest of this strip, but also to the width of the section of the end portion 18 from passage 14.
  • each spoon 20 at the side edge portions 20b is less than the diameter of the hole 10 and of the barrel 11 of the female contact member.
  • the slats 19a and 19b are floating and therefore have a certain freedom of movement.
  • the strips are formed in such a way that the spoons are elastically spaced from one another, the intermediate strips 22a coming to bear against the oblique walls of the narrowing part 15 of the passage 14.
  • the spoons 20 of the pairs of strips 19a and 19b are first brought closer to one another according to the profile of the respective frustoconical entries 6 of the socket 2.
  • the front portions 20a of the spoons of each pair come to bear one on the other while the intermediate strips 22a emerge from the oblique walls of the narrowing part 15 of the passage 14.
  • This operation already implies an elastic deformation of the lamellae the rear bands 22b are more and more firmly supported one on the other.
  • due to the freedom of movement available to each strip in particular in the lateral direction, it can adapt its position to that, rigid, of the corresponding female contact member.
  • the strips 19a and 19b are then slightly deformed in the junction zone between the spoon 20 and the handle 21, the reaction to this elastic deformation being generated at the front edges 20a of the spoons 20 and by the applying the rear bands 22b to each other.
  • the arrangement according to the invention also ensures a dissociation of the elastic functions of contact on the one hand and of shock absorption, on the other hand, the first function being provided by the spoons 20 in cooperation with the female contact member and the second by the intermediate portions 22a of the strips 19a and 19b.
  • the plug 1 has on its face turned towards the plug 2 a cavity 28 in which the part of this plug bordered by the clearance 6 can be positioned.
  • the edge of the plug which delimits the cavity 28 is interrupted at 29 (FIG. 2), that is to say on one of the small faces of the block of this plug to receive the positioning lug 13 provided on the socket.
  • FIG. 1 shows a printed circuit board P1 on which the socket 2 is mounted by means of a connection track PC on which the small branch 8b of the metal strip 8 is welded.
  • the socket 2 is provided with a certain amount of a paste of tin microbeads.
  • the plate P1 being provided with all these components, it is subjected to a steam bath at 200 ° C., which melts the tin between the contact strip 8 and the conductive track PC.
  • Figure 1 illustrates that the connection to a printed circuit can also be carried out by a conventional solder, which is shown here by way of example as regards the plug 3.
  • This is connected to a printed circuit board P2 crossed by the rear strips 22b of the strips 19a and 19b of each contact assembly 3. It should be noted that this way of connecting the plug 1 to a printed circuit board somewhat limits the freedom of the strips 19a and 19b in this plug.
  • the plug 1 can also be connected to the circuit board P2 by SMD technology, for this purpose it suffices to fold the free portions of the rear portions 22b against the board P2, the corresponding contacts C of which are previously filled with paste. welding. This way of mounting the plug is illustrated in dotted lines in Figure 1.
  • positioning or spacing pins 30 may have come directly from molding with the plug 1 and the socket 2.
  • the material chosen for the contact elements of this connector is preferably an alloy comprising in particular nickel, copper, zinc and an additive of various other materials.
  • a particularly suitable material is Arcap which is a composition containing 25% nickel, 56% copper, 17% zinc and 2% of various addition metals.
  • the contact elements are preferably gold-plated to improve their conductivity.
  • the indicated material has the advantage of being rigorously non-magnetic, having very good corrosion resistance and having a high modulus of elasticity.
  • this method cannot be transposed directly onto contacts as small as those of the connector of the present invention, since there would remain between portions of material of the strip necessary to make two adjacent contact strips. of the plug, too little material to be able to cut and shape the metal.
  • the invention therefore also proposes to provide a method which makes it possible to overcome this manufacturing difficulty.
  • the principle of this process is shown in Figures 8 to 12.
  • FIGS. 8 and 9 show a strip 31 of conductive metal already worked to form on the one hand positioning holes 32 and on the other hand strips 19a, 19b juxtaposed and connected to the longitudinal common area 33 of the strip by primers 34.
  • the pitch between the lamellae is twice that which must be observed between the contact assemblies 3 of the connector. In the example described here, the pitch being 1.27 mm, the centers of the holes 32 are spaced from each other by this value.
  • the strips 19a, 19b are kept connected to the primers 34 by rupture zones 35. The spacing between the strips is sufficient to guarantee their cutting without problems in the material of the strip, that is to say, here double 1.27 mm pitch.
  • the strips are superimposed in pairs (strips 31a and 31b) but in such a way that their strips are offset by one step between the marking holes 32 and that the concavity of their spoon 20 is turned in the same direction.
  • the same assembly is then prepared from the strips 31c and 31d and this assembly is superimposed upside down on the first assembly. Under these conditions, the assembly obtained comprises four bands with pairs of opposing lamellae juxtaposed at a pitch of 1.27 mm.
  • Such an assembly cut in length to have the desired number of contact members is then placed in a mold intended for making the insulating blocks 1a and 1b. After molding, it then suffices to break the connections in the rupture zones 35 to rid the plug of the residue from the strips 31a to 31d.
  • the female contact elements can be produced in the same way, using, of course, each time, only two strips from which the strips 8 will have been cut and formed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
EP88100976A 1987-02-09 1988-01-23 Connecteur miniature et son procédé de fabrication Expired - Lifetime EP0278295B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88100976T ATE69523T1 (de) 1987-02-09 1988-01-23 Miniaturverbinder und sein herstellungsverfahren.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8701671 1987-02-09
FR8701671A FR2610767B1 (fr) 1987-02-09 1987-02-09 Connecteur miniature et son procede de fabrication

Publications (2)

Publication Number Publication Date
EP0278295A1 EP0278295A1 (fr) 1988-08-17
EP0278295B1 true EP0278295B1 (fr) 1991-11-13

Family

ID=9347783

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88100976A Expired - Lifetime EP0278295B1 (fr) 1987-02-09 1988-01-23 Connecteur miniature et son procédé de fabrication

Country Status (8)

Country Link
US (1) US4842536A (ko)
EP (1) EP0278295B1 (ko)
JP (1) JPS63200481A (ko)
KR (1) KR880010522A (ko)
AT (1) ATE69523T1 (ko)
CA (1) CA1279911C (ko)
DE (1) DE3866122D1 (ko)
FR (1) FR2610767B1 (ko)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0330274A (ja) * 1989-06-27 1991-02-08 Matsushita Electric Works Ltd コネクタのコンタクトの装着方法
WO1992004746A1 (fr) * 1990-09-12 1992-03-19 Thomas & Betts, France Connecteur femelle a contacts double-lame
DE19535959A1 (de) * 1995-09-27 1997-04-03 Siemens Ag Elektrisches Verbinderpaar
FR2777707B1 (fr) * 1998-04-17 2000-06-16 Nicomatic Bande d'elements de contact a cadre, son procede de fabrication et son application a des ensembles de contacts
US20050005436A1 (en) * 2003-07-09 2005-01-13 Jung-Chien Chang Method for preparing thin integrated circuits with multiple circuit layers
KR100807045B1 (ko) * 2006-08-28 2008-02-25 동부일렉트로닉스 주식회사 반도체 검사장치
US7517226B2 (en) * 2007-07-26 2009-04-14 Eli Kawam Helical contact connector system
DE112008002371B4 (de) * 2007-09-12 2013-11-28 Autonetworks Technologies, Ltd. Anschluss zur Herstellung einer elektrischen Verbindung
GB2454669B (en) * 2007-11-13 2012-04-18 Itt Mfg Enterprises Inc Connector arrangemen
US8368331B2 (en) 2008-08-29 2013-02-05 Rbc Manufacturing Corporation Methods and apparatus for monitoring average current and input power in an electronically commutated motor
JP5653700B2 (ja) * 2010-09-27 2015-01-14 矢崎総業株式会社 セル電圧検出コネクタ
US10522930B2 (en) * 2016-03-11 2019-12-31 Dell Products L.P. Systems and methods for frequency shifting resonance of connector stubs
US11006542B2 (en) * 2018-12-27 2021-05-11 Self Electronics Co., Ltd. Power-supply connector for shelves and power-supply system with tracks for use thereof

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1531917A (en) * 1922-11-11 1925-03-31 Gen Electric Electric switch
US2517677A (en) * 1948-03-15 1950-08-08 Kjell-Berger Bo Gustaf Kjeil Connecting plug
US2972728A (en) * 1958-06-09 1961-02-21 Fred H Cole Electrical plug having self-aligning terminal pins
US2999998A (en) * 1958-09-22 1961-09-12 Fred H Cole Self-aligning electrical connector assembly
US3295097A (en) * 1964-07-09 1966-12-27 Nu Line Ind Inc Electrical connector with bent pin contact
JPS4530141Y1 (ko) * 1967-05-18 1970-11-18
US3581272A (en) * 1968-12-23 1971-05-25 Bunker Ramo Miniature connector
US3864000A (en) * 1973-06-07 1975-02-04 Amp Inc Mating contact connector housing assembly
GB1527035A (en) * 1976-02-21 1978-10-04 Amp Inc Electrical connector assemblies
US4437726A (en) * 1982-06-14 1984-03-20 Omnetics, Inc. Flexible pin

Also Published As

Publication number Publication date
FR2610767B1 (fr) 1989-06-09
US4842536A (en) 1989-06-27
JPS63200481A (ja) 1988-08-18
ATE69523T1 (de) 1991-11-15
EP0278295A1 (fr) 1988-08-17
KR880010522A (ko) 1988-10-10
FR2610767A1 (fr) 1988-08-12
DE3866122D1 (de) 1991-12-19
CA1279911C (en) 1991-02-05

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