EP0205458B2 - Connector for ribbon cable - Google Patents
Connector for ribbon cable Download PDFInfo
- Publication number
- EP0205458B2 EP0205458B2 EP19850905290 EP85905290A EP0205458B2 EP 0205458 B2 EP0205458 B2 EP 0205458B2 EP 19850905290 EP19850905290 EP 19850905290 EP 85905290 A EP85905290 A EP 85905290A EP 0205458 B2 EP0205458 B2 EP 0205458B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- plate
- passage
- terminal
- plates
- extending
- 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
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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
- 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
- H01R12/50—Fixed connections
- H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
- H01R12/65—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal
- H01R12/67—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal insulation penetrating terminals
- H01R12/675—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal insulation penetrating terminals with contacts having at least a slotted plate for penetration of cable insulation, e.g. insulation displacement contacts for round conductor flat cables
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- 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
- H01R13/10—Sockets for co-operation with pins or blades
- H01R13/11—Resilient sockets
- H01R13/112—Resilient sockets forked sockets having two legs
-
- 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
- H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
- H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
Definitions
- the present invention relates to a connector for ribbon cable, and particularly to improve means for aligning terminals in the housing.
- Ribbon cable provides a convenient means for handling multiple conductors, and is typically manufactured with conductors on .050 inch (1.27 mm) centerline spacing in a common jacket of insulation. Accordingly, specialized connectors having insulation displacing terminals with slotted plates on .050 inch (1.27 mm) centerline spacing have been developed. Typically, such connectors have two rows of terminals spaced on .100 inch (2.54 mm) centers, the slotted plates in each row being offset from the slotted plates in the other row so that each row of terminals terminates alternate conductors in the cable.
- An early connector of this type which is sold by AMP Incorporated under the trademark AMP-LATCH, is disclosed in US-A-3 820 555.
- US-A-4 171858 discloses a connectorfor terminating a multiconductor flat cable using insulation displacing contacts disposed in passages of the connector housing.
- Each contact includes a single barb which bites into the wall of a respective passage to prevent removal of the contact, and a double spring member contact having flared ends.
- the flared ends of the contact engage a pair of preloading barriers that serve to space the double spring member contacts from each other by a predetermined distance and to center the contacts over an entry aperture.
- the preloading barriers terminate in the region of the flared ends of the contacts.
- DE-C-26 07 693 and US-A-4 637 004 disclose an electrical connector of the type comprising an insulative housing having a mating end, a cable receiving end, and a plurality of terminal passages extending therebetween, the passage being of generally square cross-section.
- the connector further comprises a plurality of stamped and formed terminals received in respective passages, each terminal having a body portion comprising a substantially planar first plate extending to a coplanar slotted plate portion.
- Terminals as described above generally depend on contact between the three plates of the C-shaped body portion and respective adjacent walls of the passage to angularly position the terminals in the housing.
- a detent may be stamped in one or more walls to provide an interference fit for retention.
- stamped dimensions are relative easy to control
- an oversized formed dimension means that another dimension formed within the same stamped dimension will be undersized.
- a place of oversized width means that one or two of the other plates will be undersized.
- an electrical connector of the type comprising an insulative housing having a mating end, a cable receiving end, and a plurality of terminal passages extending therebetween, said connector further comprising a plurality of elongate terminals received in respective passages, each terminal having a body portion of generally C-shaped cross-section, said body portion comprising a substantially planar first plate extending to a coplanar slotted plate portion, said first plate having a pair of opposed lugs which engage opposite walls of said passage to secure said terminal in a respective passage, characterised in that each said body portion further comprises a third plate substantially parallel to the first plate, said first and third plates having respective cantilever arms extending therefrom to form a mating portion of said terminal, said first and third plates being connected by a second plate extending substantially normally therebetween, each said passage having an elongate rib on one wall thereof, said rib extending from proximate said mating end toward said cable receiving end (14), with said cantilever arms being loaded against opposite sides of rib
- the mating end of the terminal comprises cantilever arms extending from parallel plates of the body portion. Precise angular orientation of the terminal assures that parallel surfaces of the mating ends of the arms will contact opposite sides, rather than edges, of a mating pin.
- the inventive connector comprises a dielectric housing 10 having a cable receiving end 14, a mating end 16, and a plurality of terminal receiving passages 12 extending therebetween.
- Each passage 12 is of generally square cross section and has a pair of ribs 20 on opposite walls extending from proximate the mating end 16 toward the cable receiving end 14.
- a pair of lead-ins 15 in opposed walls of each passage 12 at cable receiving end 14 serve to position terminals 18 received therein, as will be described.
- Each terminal 18 is stamped and formed from conventional metal strip stock and comprises a body portion 22 of generally C-shaped cross-section having a first plate 24, a parallel third plate 28, and a second plate 26 (in two sections) extending substantially normally therebetween.
- the first and third plates 24, 28 have respective cantilever arms 34, 36 extending therefrom to contact surfaces 38, 40 for engaging a pin.
- the first plate 24 is stamped with a pair of opposed lugs 30, 32 which are received in passage lead-ins 15 to align the terminal 18 in passage 12.
- the first plate 24 further extends to a coplanar slotted plate 42; the slot 48 therein is offset .025 inch from the centerline of plate 24.
- Figure 2 shows the assembled connector, with terminals 18 loaded in two rows of respective passages 12 of housing 10, the slotted plates 42 extending beyond cable receiving end 14.
- the slots 18 are spaced at .100 inch in each row and are offset .050 inch from slots 48 in the other row in order to terminate conductors 3 on .050 inch spacing in cable 2.
- the conductors 3 are aligned relative to housing 10 by flutes 6 in cover 4, the slotted plates 42 being received in apertures 5 to latch the cover4 to the housing 10.
- centerline spacing of slots 48 be closely maintained.
- the passages 12 in each row are directly opposite respective passages in the adjacent row, the offset being achieved by the offset slotted plates 42 and opposite orientation of terminals between rows.
- the terminals 18 may be installed in the center row of passages in either of two orientations to yield three possible combinations of two rows of terminals to connect with any two of three rows of pins (see also Figure 3).
- FIG. 3 shows how terminals 18 are axially positioned in passages 12.
- Each rib 20 serves to prestress the cantilever arms 34, 36, the contact surfaces 38, 40 bearing against opposite sides of the rib.
- the rib 20 also serves as a stop to limit insertion depth of the terminal 18 and further serves to withstand the forces imposed during termination of the ribbon cable.
- Lead-ins 15 receive lugs 30, 32 and serve to position plate 24 flushly against the adjacent wall of passage 12.
- Figure 4 shows lugs 30, 32 engaged in opposite walls of passage 12. This is in interference fit in the plastic which not only maintains proper angular orientation of the terminal but retains it against withdrawal.
- Figure 5 is a section view taken through plates 24, 28 between the top and bottom sections of plate 26, showing the engagement of lugs 30, 32 in the housing 10. Clearance between plates 26, 28 and adjacent walls of passage 12 allows for any dimensional variations in forming plates 26, 28.
- Figure 6 depicts a terminal 54 according to the teaching of the prior art, which terminal comprises a body portion 54 having first, second and third plates 56, 58, 60, respectively, and a slotted plate 72 extending from first plate 58 coplanar therewith.
- Cantilever arms 64, 68 extend from respective plates 58, 62 and have contact portions 68, 70.
- Figure 7 depicts the prior art terminals 54 loaded in a housing and illustrates the alignment problem. Since the terminals 54 are received in respective passages in an interference fit between first plate 58, dimple 88 on second plate 60, third plate 62, and adjacent walls of the passage, any dimensional variations in the width of the plates translates into terminal orientation. The terminals may thus end up skewed, adversely affecting the centerline spacing of slots 78. This skewing is exaggerated fof purposes of illustration.
Landscapes
- Multi-Conductor Connections (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
Description
- The present invention relates to a connector for ribbon cable, and particularly to improve means for aligning terminals in the housing.
- Ribbon cable provides a convenient means for handling multiple conductors, and is typically manufactured with conductors on .050 inch (1.27 mm) centerline spacing in a common jacket of insulation. Accordingly, specialized connectors having insulation displacing terminals with slotted plates on .050 inch (1.27 mm) centerline spacing have been developed. Typically, such connectors have two rows of terminals spaced on .100 inch (2.54 mm) centers, the slotted plates in each row being offset from the slotted plates in the other row so that each row of terminals terminates alternate conductors in the cable. An early connector of this type, which is sold by AMP Incorporated under the trademark AMP-LATCH, is disclosed in US-A-3 820 555.
- US-A-4 171858 discloses a connectorfor terminating a multiconductor flat cable using insulation displacing contacts disposed in passages of the connector housing. Each contact includes a single barb which bites into the wall of a respective passage to prevent removal of the contact, and a double spring member contact having flared ends. Upon insertion of a contact into a passage, the flared ends of the contact engage a pair of preloading barriers that serve to space the double spring member contacts from each other by a predetermined distance and to center the contacts over an entry aperture. The preloading barriers terminate in the region of the flared ends of the contacts.
- DE-C-26 07 693 and US-A-4 637 004 disclose an electrical connector of the type comprising an insulative housing having a mating end, a cable receiving end, and a plurality of terminal passages extending therebetween, the passage being of generally square cross-section. The connector further comprises a plurality of stamped and formed terminals received in respective passages, each terminal having a body portion comprising a substantially planar first plate extending to a coplanar slotted plate portion.
- Terminals as described above generally depend on contact between the three plates of the C-shaped body portion and respective adjacent walls of the passage to angularly position the terminals in the housing. A detent may be stamped in one or more walls to provide an interference fit for retention. For such small terminals (about .070 inch (1.78 mm) square in the body portion), it is extremely difficult to control the formed dimensions relative to the terminal size. Since stamped dimensions are relative easy to control, an oversized formed dimension means that another dimension formed within the same stamped dimension will be undersized. Most notably, a place of oversized width means that one or two of the other plates will be undersized.
- This in turn affects the angular orientation of the terminals in respective passages, and likewise the centerline spacing of the slotted plate portions. Considering also the tolerances in spacing of conductors in the ribbon cable, damage or even severing of one or more such conductors is possible.
- According to the invention, an electrical connector of the type comprising an insulative housing having a mating end, a cable receiving end, and a plurality of terminal passages extending therebetween, said connector further comprising a plurality of elongate terminals received in respective passages, each terminal having a body portion of generally C-shaped cross-section, said body portion comprising a substantially planar first plate extending to a coplanar slotted plate portion, said first plate having a pair of opposed lugs which engage opposite walls of said passage to secure said terminal in a respective passage, characterised in that each said body portion further comprises a third plate substantially parallel to the first plate, said first and third plates having respective cantilever arms extending therefrom to form a mating portion of said terminal, said first and third plates being connected by a second plate extending substantially normally therebetween, each said passage having an elongate rib on one wall thereof, said rib extending from proximate said mating end toward said cable receiving end (14), with said cantilever arms being loaded against opposite sides of rib, and in that said rib forms a stop abutted by said second plate of said terminal to axially position said terminal in its passage, each passage having a pair of lead-ins at the cable receiving end to position the first plate of said body flushly against the wall of the passage adjacent to said first plate, whereby clearance is provided between the second and third plates and the walls of the passage, adjacent thereto to allow for dimensional variations in forming the second and third plates.
- An additional advantage is achieved where the mating end of the terminal comprises cantilever arms extending from parallel plates of the body portion. Precise angular orientation of the terminal assures that parallel surfaces of the mating ends of the arms will contact opposite sides, rather than edges, of a mating pin.
- An embodiment of the invention will now be described by way of example with reference to the accompanying drawings, in which:-
- Figure 1 is an exploded perspective of a sectioned connector;
- Figure 2 is a perspective of the connector, ribbon cable, and cover;
- Figure 3 is an end section of the connector;
- Figure 4 is a partial side section taken along line 4-4 of Figure 3;
- Figure 5 is a partial plan section taken along line 5-5 of Figure 3;
- Figure 6 is a perspective of a prior art terminal;
- Figure 7 is a partial plan section similar to Figure 5 with the prior art terminal.
- Referring to Figure 1, the inventive connector comprises a
dielectric housing 10 having acable receiving end 14, amating end 16, and a plurality ofterminal receiving passages 12 extending therebetween. Eachpassage 12 is of generally square cross section and has a pair ofribs 20 on opposite walls extending from proximate themating end 16 toward thecable receiving end 14. A pair of lead-ins 15 in opposed walls of eachpassage 12 atcable receiving end 14 serve toposition terminals 18 received therein, as will be described. - Each
terminal 18 is stamped and formed from conventional metal strip stock and comprises abody portion 22 of generally C-shaped cross-section having afirst plate 24, a parallelthird plate 28, and a second plate 26 (in two sections) extending substantially normally therebetween. The first andthird plates respective cantilever arms surfaces first plate 24 is stamped with a pair ofopposed lugs ins 15 to align theterminal 18 inpassage 12. Thefirst plate 24 further extends to a coplanarslotted plate 42; theslot 48 therein is offset .025 inch from the centerline ofplate 24. - Figure 2 shows the assembled connector, with
terminals 18 loaded in two rows ofrespective passages 12 ofhousing 10, theslotted plates 42 extending beyondcable receiving end 14. Theslots 18 are spaced at .100 inch in each row and are offset .050 inch fromslots 48 in the other row in order to terminateconductors 3 on .050 inch spacing incable 2. Theconductors 3 are aligned relative tohousing 10 byflutes 6 incover 4, theslotted plates 42 being received inapertures 5 to latch the cover4 to thehousing 10. Inorderfor terminals 18 to engageconductors 3 without damage, it is thus important that centerline spacing ofslots 48 be closely maintained. Note that thepassages 12 in each row are directly opposite respective passages in the adjacent row, the offset being achieved by the offset slottedplates 42 and opposite orientation of terminals between rows. Theterminals 18 may be installed in the center row of passages in either of two orientations to yield three possible combinations of two rows of terminals to connect with any two of three rows of pins (see also Figure 3). - Figure 3 shows how
terminals 18 are axially positioned inpassages 12. Eachrib 20 serves to prestress thecantilever arms contact surfaces rib 20 also serves as a stop to limit insertion depth of theterminal 18 and further serves to withstand the forces imposed during termination of the ribbon cable. Lead-ins 15 receivelugs position plate 24 flushly against the adjacent wall ofpassage 12. - Figure 4 shows
lugs passage 12. This is in interference fit in the plastic which not only maintains proper angular orientation of the terminal but retains it against withdrawal. - Figure 5 is a section view taken through
plates plate 26, showing the engagement oflugs housing 10. Clearance betweenplates passage 12 allows for any dimensional variations in formingplates - Figure 6 depicts a
terminal 54 according to the teaching of the prior art, which terminal comprises abody portion 54 having first, second andthird plates slotted plate 72 extending fromfirst plate 58 coplanar therewith.Cantilever arms respective plates contact portions - Figure 7 depicts the
prior art terminals 54 loaded in a housing and illustrates the alignment problem. Since theterminals 54 are received in respective passages in an interference fit betweenfirst plate 58, dimple 88 onsecond plate 60,third plate 62, and adjacent walls of the passage, any dimensional variations in the width of the plates translates into terminal orientation. The terminals may thus end up skewed, adversely affecting the centerline spacing ofslots 78. This skewing is exaggerated fof purposes of illustration. - The foregoing is exemplary and not intended to limit the scope of the claims which follow.
Claims (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US67934084A | 1984-12-07 | 1984-12-07 | |
US679340 | 1984-12-07 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0205458A1 EP0205458A1 (en) | 1986-12-30 |
EP0205458B1 EP0205458B1 (en) | 1990-01-24 |
EP0205458B2 true EP0205458B2 (en) | 1993-06-23 |
Family
ID=24726530
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19850905290 Expired - Lifetime EP0205458B2 (en) | 1984-12-07 | 1985-10-15 | Connector for ribbon cable |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0205458B2 (en) |
DE (1) | DE3575637D1 (en) |
WO (1) | WO1986003626A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4993975A (en) * | 1989-07-07 | 1991-02-19 | Amp Incorporated | Electrical connector and tapered fixed beam contact therefor |
GB9017417D0 (en) * | 1990-08-08 | 1990-09-19 | Amp Great Britain | Wire-to-wire electrical connecting means |
GB2253523A (en) * | 1991-03-02 | 1992-09-09 | Itt Ind Ltd | Interference fit of contact in connector housing |
ITBO20050237A1 (en) * | 2005-04-14 | 2006-10-15 | Selta S R L | CONNECTOR CONNECTED |
JP5872602B2 (en) | 2014-02-04 | 2016-03-01 | タイコエレクトロニクスジャパン合同会社 | Electrical connector |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4171858A (en) * | 1978-06-01 | 1979-10-23 | Litton Systems, Inc. | Insulation displacement connector for a flat multi-conductor cable |
US4279074A (en) * | 1978-09-05 | 1981-07-21 | Amp Incorporated | Method of terminating flat multi-conductor transmission cable |
US4448473A (en) * | 1982-03-31 | 1984-05-15 | Amp Incorporated | Latching slotted beam terminal |
US4451099A (en) * | 1982-05-07 | 1984-05-29 | Amp Incorporated | Electrical connector having commoning member |
DE3334615A1 (en) * | 1983-09-24 | 1985-04-11 | Wilhelm Quante Spezialfabrik für Apparate der Fernmeldetechnik GmbH & Co, 5600 Wuppertal | PLUG FOR ELECTRIC FLAT CABLES |
-
1985
- 1985-10-15 DE DE8585905290T patent/DE3575637D1/en not_active Expired - Lifetime
- 1985-10-15 EP EP19850905290 patent/EP0205458B2/en not_active Expired - Lifetime
- 1985-10-15 WO PCT/US1985/001994 patent/WO1986003626A1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
EP0205458B1 (en) | 1990-01-24 |
DE3575637D1 (en) | 1990-03-01 |
EP0205458A1 (en) | 1986-12-30 |
WO1986003626A1 (en) | 1986-06-19 |
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