EP0421474B1 - Elément de contact pour connecteurs de bord - Google Patents
Elément de contact pour connecteurs de bord Download PDFInfo
- Publication number
- EP0421474B1 EP0421474B1 EP90119186A EP90119186A EP0421474B1 EP 0421474 B1 EP0421474 B1 EP 0421474B1 EP 90119186 A EP90119186 A EP 90119186A EP 90119186 A EP90119186 A EP 90119186A EP 0421474 B1 EP0421474 B1 EP 0421474B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- contact member
- mentioned
- daughter card
- shaped contact
- 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
Links
- 230000001154 acute effect Effects 0.000 claims 2
- 230000000630 rising effect Effects 0.000 description 4
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- ORQBXQOJMQIAOY-UHFFFAOYSA-N nobelium Chemical compound [No] ORQBXQOJMQIAOY-UHFFFAOYSA-N 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Images
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
- H01R12/70—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
-
- 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
- H01R12/82—Coupling devices connected with low or zero insertion force
- H01R12/83—Coupling devices connected with low or zero insertion force connected with pivoting of printed circuits or like after insertion
-
- 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
- H01R12/51—Fixed connections for rigid printed circuits or like structures
- H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
- H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
Definitions
- the present invention refers to an edge connector which receives the edge of a daughter card on which is loaded, for example, a memory module, and is used to connect electrically the memory module to the circuits on a motherboard to which the connector is attached.
- the electrical contact element which is used in the connector disclosed in Laid-Open Japanese Patent No. 60-230378 and in Laid-Open Japanese Patent No. 63-193473 features a support part between (a) the C-shaped contact member which accepts the edge of the daughter card and (b) the base part which supports the C-shaped contact member which is short. As a result, there is the likelihood that stress will concentrate on the support part and plastic deformation will take place.
- the elastic deformation of the electric contact element relies only on the C-shaped contact member so that (a) there are limitations on the amount of plastic deformation and (b) the electric contact element cannot handle the wide variations in thickness of the daughter card.
- Laid-Open Japanese Patent No. 63-193473 discloses an electric contact element for a connector which is soldered onto the surface of the motherboard to which the edge connector is attached (the "surface mounting type” of connector, hereafter referred to as "SMT").
- SMT surface mounting type of connector
- the bottom surface of the base part of the electric contact element is soldered directly to the motherboard.
- problems with this when there are variations in temperature. There is the possibility that temperature cracks will appear on the soldered part which is interposed between the motherboard and the base part of the electric contact part caused either by the difference in the thermal expansion coefficient of the electric element and the motherboard or due to the fact that the external force when the motherboard is mounted onto the connector is applied directly to the base part of the electric contact element thus breaking the connection.
- Document EP-A2-0,407,864 of the elder European application 90 112 700.1 discloses an edge connector for receiving an edge of a circuit board.
- the contacts positioned in the housing of the connector include a resilient stand-up section having a tip defining a first contact point and a C-shaped section having a tip defining a second contact point with the circuit board being received between the first and second contact point.
- the circuit board is received in a first angular position and then rotated to a second angular position.
- the contacts comprise a C- or U-shaped outer contact member and a U-shaped inner contact member.
- An edge of a circuit board is simply slid from top downwards into an opening rather than rotation after insertion.
- the electric contact element for edge connectors is equipped with a C-shaped first contact device which comprises a first part and a second part which extend upward from both ends of the base part which is fixed to the bottom part of the cavity of the housing; a C-shaped second contact device which is coupled to the front end of the elastic or resilient support part which extends from the side of the above-mentioned base part of the first contact device at a sharp angle to the above-mentioned base part and a connection device which protrudes onto the bottom wall of the above-mentioned housing from the above-mentioned base part of the above-mentioned first contact device and connects to the motherboard. It uses either of the above-mentioned first and second contact devices or both as a contact with the daughter card.
- FIG. 1 gives an overview of the electric contact element and the housing of the invention.
- Electric contact element 2 is pressed into housing 4 from the top at the position of arrow P and is forced into housing 4 and is retained on the bottom part of cavity 5 of housing 4 when convex part 2a (which is formed on the outside of both side surfaces of electric contact point 2) locks into the wall 4a of housing 4.
- Electric contact element 2 is made up of (a) a C-shaped first connection device which comprises a second support column (second part) whose front end first extends upward from the first support column 12 (first part) which itself extends upward from one end of base part 11, then extends inside the electric contact element; (b) a resilient support part 20 which extends in a direct line from near the base part of the above-mentioned second support column 14 at a sharp angle to base part 11; and (c) a second contact device 30 which first extends to the front end of the above-mentioned second support column 14 from the front end of the part 20, then makes a U-turn, and then curves in a C-shape along the inside of the above-mentioned part 20 and the second support column 14.
- Front end 20a of the above-mentioned part 20 faces the above-mentioned second support column 14 and forms the first contact.
- Front end 30a of the above-mentioned second contact device 30 faces the above-mentioned first contact 20a and extends to form the second contact.
- the inside 14a of front end of the above-mentioned second support column 14 faces the above-mentioned first contact 20a and forms a protrusion which serves as a reserve contact.
- Daughter card 6 is inserted between the above-mentioned first contact 20a and the second contact 30a. These are connected to daughter card 6 by turning in the direction indicated by arrow Q.
- the surfaces of the first contact 20a and the second contact 30a as well as the reserve contact 14a inside the front end of the above-mentioned second support column 14 are connected to the surface of the daughter card 6.
- the reserve contact 14a acts as an anti-overstress device which regulates the amount of deformation so that the above-mentioned second contact device 30 is not deformed excessively especially when a daughter card with a thick sheet is inserted.
- Part 20 extends at a sharp angle to base part 11.
- the length of part 20 being long so that the amount of potential elastic deformation increases.
- the electric contact element has a low profile and the connector can accordingly be of a low profile.
- Electric contact element 2 is equipped with sliding surface 14b which is inclined toward part of the above-mentioned second support column 14 and which is opposite front end 30a of the above-mentioned second contact device 30.
- sliding surface 14b is deformed as the above-mentioned second contact device is mounted onto daughter card 6, it makes contact with the above-mentioned outside surface 30b and functions to slide front end 30a of the second contact device 30 along surface 6a of daughter card 6.
- Daughter card 6 is inserted between the above-mentioned first contact 20a and the second contact 30a of electric contact element 2.
- the C-shaped second contact device 30 and part 20 deform elastically upon the daughter card being turned to the position indicating by 6'.
- the amount of deformation and the stress involved are dispersed to the above-mentioned second contact device 30 and to the rising part 20 so that (a) the amount of resilient deformation can be increased; (b) the wide variations in sheet thickness of daughter card 6 can be handled; and (c) an electric contact point can be realized which has reliable electric contact characteristics and which makes contact with both sides of daughter card 6 with great contact pressure.
- the above-mentioned reserve contact 14a acts as an anti-overstress device for the above-mentioned second contact device 30. It prevents plastic deformation from extreme deformation by controlling the amount of deformation of the second contact device 30.
- the end 30b of the second contact device 30 makes contact with the sliding surface 14b and slides along surface 6a of daughter card 6. This makes it possible for daughter card 6 to be mounted smoothly even when there are scratches and other surface irregularities on surface 6a of daughter card 6 and prevents the above-mentioned second contact device 30 from excessive deforming and from plastic deformation.
- Protrusions are located on the inside surface 12a of the first support column 12 or on plane 20b of the front end of rising part 20. These make contact with each other and are used as anti-overstress devices to prevent the above-mentioned rising part from deforming excessively.
- Reference number 16 in Figure 1 indicates the tine part of electric element 2 which is soldered to motherboard 8. The figure also indicates tine part 17 (arrayed in zigzag fashion with tine part 16) on the electric contact element (not shown) adjacent electric contact element 2.
- Figure 2 indicates a second embodiment. It indicates daughter card 106 which is clamped between first contact 120a and second contact 130a and which fits in last of all at position 106' which is parallel to the bottom surface of the housing. Since electric contact element 102 is configured exactly as element 2 except that the rising part 120 extends from the root part (near the base part) of the second support column 114 so that it is parallel to base part 111, we shall not go into detail about how it works since this is clear from the drawing.
Landscapes
- Coupling Device And Connection With Printed Circuit (AREA)
Claims (3)
- Connecteur électrique de bord (1, 101) ayant :a) un boîtier diélectrique (4, 104) et plusieurs éléments de contact électriques (2, 102) comprenant chacun un élément de contact extérieur (10, 110) en forme de C pour la fixation de l'élément de contact électrique (2, 102) dans ledit boîtier diélectrique (4, 104) etb) un élément de contact intérieur (30, 130) en forme de C positionné dans l'élément de contact extérieur (10, 110) en forme de C afin de recevoir une carte-fille (6, 106) dans une première position angulaire, puis de tourner dans une seconde position angulaire,
caractérisé en ce quec) l'élément de contact intérieur (30, 130) en forme de C est relié à l'extrémité libre d'un élément à ressort (20, 120) relativement longd) s'étendant depuis l'élément de contact extérieur (10, 110) en forme de C, sensiblement parallèlement à, ou formant un angle aigu avec, la base de l'élément de contact extérieur (10, 110) en forme de C,e) de manière que la carte-fille (6, 106) soit sensiblement parallèle à, ou forme un angle aigu avec, le fond du boîtier (4, 104) dans la seconde position angulaire. - Connecteur électrique de bord (1, 101) selon la revendication 1, caractérisé en ce qu'une extrémité libre de l'élément de contact extérieur (10, 110) en forme de C recouvre l'extrémité libre (30a, 130a) de l'élément de contact intérieur (30, 130) en forme de C afin de protéger l'élément intérieur (30, 130) en forme de C.
- Connecteur électrique de base (1, 101) selon la revendication 1, caractérisé en ce qu'une extrémité libre (30b, 130b) de l'élément de contact intérieur (30, 130) en forme de C est avancée jusqu'en butée contre une surface intérieure (14a, 114b) de l'élément de contact extérieur (10, 110) en forme de C lorsque la carte-fille (6, 106) est insérée ou extraite.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95110834A EP0675572A3 (fr) | 1989-10-06 | 1990-10-05 | Elément de contact pour connecteurs de bord. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1259976A JP2704300B2 (ja) | 1989-10-06 | 1989-10-06 | エッジコネクタ用コンタクト |
JP259976/89 | 1989-10-06 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95110834.9 Division-Into | 1990-10-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0421474A1 EP0421474A1 (fr) | 1991-04-10 |
EP0421474B1 true EP0421474B1 (fr) | 1996-06-19 |
Family
ID=17341547
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95110834A Ceased EP0675572A3 (fr) | 1989-10-06 | 1990-10-05 | Elément de contact pour connecteurs de bord. |
EP90119186A Expired - Lifetime EP0421474B1 (fr) | 1989-10-06 | 1990-10-05 | Elément de contact pour connecteurs de bord |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95110834A Ceased EP0675572A3 (fr) | 1989-10-06 | 1990-10-05 | Elément de contact pour connecteurs de bord. |
Country Status (5)
Country | Link |
---|---|
EP (2) | EP0675572A3 (fr) |
JP (1) | JP2704300B2 (fr) |
KR (1) | KR960001069B1 (fr) |
DE (1) | DE69027500T2 (fr) |
MY (1) | MY107147A (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2814446B2 (ja) * | 1994-01-11 | 1998-10-22 | ヒロセ電機株式会社 | 回路基板用電気コネクタ |
JP2007220542A (ja) * | 2006-02-17 | 2007-08-30 | Iriso Denshi Kogyo Kk | コネクタ |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0407864A2 (fr) * | 1989-07-10 | 1991-01-16 | The Whitaker Corporation | Connecteur de bordure pour plaque de circuit imprimé |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3732531A (en) * | 1971-06-16 | 1973-05-08 | Bunker Ramo | Electric contacts |
US3848952A (en) * | 1973-07-27 | 1974-11-19 | Amp Inc | Zero insertion force edge card connector |
EP0158413B1 (fr) | 1984-04-06 | 1990-01-31 | Molex Incorporated | Connecteur électrique à faible force d'insertion avec contrôle des contraintes de contacts |
US4737120A (en) | 1986-11-12 | 1988-04-12 | Amp Incorporated | Electrical connector with low insertion force and overstress protection |
US4713013A (en) * | 1987-01-30 | 1987-12-15 | Molex Incorporated | Compliant high density edge card connector with contact locating features |
-
1989
- 1989-10-06 JP JP1259976A patent/JP2704300B2/ja not_active Expired - Fee Related
-
1990
- 1990-09-19 MY MYPI90001620A patent/MY107147A/en unknown
- 1990-10-05 DE DE69027500T patent/DE69027500T2/de not_active Expired - Fee Related
- 1990-10-05 KR KR1019900015790A patent/KR960001069B1/ko not_active IP Right Cessation
- 1990-10-05 EP EP95110834A patent/EP0675572A3/fr not_active Ceased
- 1990-10-05 EP EP90119186A patent/EP0421474B1/fr not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0407864A2 (fr) * | 1989-07-10 | 1991-01-16 | The Whitaker Corporation | Connecteur de bordure pour plaque de circuit imprimé |
Also Published As
Publication number | Publication date |
---|---|
JPH03122981A (ja) | 1991-05-24 |
EP0675572A3 (fr) | 1996-03-27 |
EP0421474A1 (fr) | 1991-04-10 |
DE69027500D1 (de) | 1996-07-25 |
DE69027500T2 (de) | 1996-10-31 |
KR910008894A (ko) | 1991-05-31 |
MY107147A (en) | 1995-09-30 |
EP0675572A2 (fr) | 1995-10-04 |
JP2704300B2 (ja) | 1998-01-26 |
KR960001069B1 (ko) | 1996-01-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6315620B1 (en) | System, method, and device for a pre-loaded straddle mounted connector assembly | |
JP3066940B2 (ja) | カードリーダ用電気コネクタ | |
EP0590429B1 (fr) | Connecteur éléctrique de bordure de carte | |
CA1270915A (fr) | Connecteur pour carte souple a circuit imprime | |
US4708415A (en) | Electrical connectors | |
US4264114A (en) | Electrical connector assembly | |
JP3421835B2 (ja) | 接点支持体 | |
KR100256936B1 (ko) | 보강 래치를 갖춘 커넥터 | |
US7052320B2 (en) | Electrical connector having shielding plates | |
KR0141902B1 (ko) | 모서리 장착식 회로 기판용 전기 커넥터 | |
US5472349A (en) | Surface mountable board edge connector | |
US5982624A (en) | IC card | |
JPH11514131A (ja) | 応力を分離したはんだテールを有する電気コネクタ | |
US5292265A (en) | Edge mounted circuit board electrical connector | |
US6464514B1 (en) | Card edge connector with grounding pad | |
KR19990071751A (ko) | 퍼스널컴퓨터용카드어댑터 | |
US6368124B1 (en) | Card edge connector with daughter board retainer | |
KR101053753B1 (ko) | 커넥터 | |
JPH0748389B2 (ja) | 印刷回路板用高密度電気コネクタ | |
EP0821447A2 (fr) | Connecteur pour carte imprimé | |
EP0421474B1 (fr) | Elément de contact pour connecteurs de bord | |
US6146177A (en) | Electrical connector having a locking device | |
US4900269A (en) | Connector housing | |
US5924883A (en) | Electrical connector | |
US20020142657A1 (en) | Connector with improved reliability |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19901220 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB IT NL |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: THE WHITAKER CORPORATION |
|
17Q | First examination report despatched |
Effective date: 19940117 |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT NL |
|
XX | Miscellaneous (additional remarks) | ||
ITF | It: translation for a ep patent filed | ||
REF | Corresponds to: |
Ref document number: 69027500 Country of ref document: DE Date of ref document: 19960725 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19980914 Year of fee payment: 9 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000501 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20000501 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20020913 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20021003 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20021031 Year of fee payment: 13 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20031005 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040501 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20031005 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040630 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20051005 |