WO1993018560A1 - Holdown key for low profile connector - Google Patents
Holdown key for low profile connector Download PDFInfo
- Publication number
- WO1993018560A1 WO1993018560A1 PCT/US1992/002083 US9202083W WO9318560A1 WO 1993018560 A1 WO1993018560 A1 WO 1993018560A1 US 9202083 W US9202083 W US 9202083W WO 9318560 A1 WO9318560 A1 WO 9318560A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- key
- legs
- circuit board
- connector
- abut
- Prior art date
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
- 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
- H01R12/7064—Press fitting
-
- 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
- H01R12/585—Terminals having a press fit or a compliant portion and a shank passing through a hole in the printed circuit board
Definitions
- First ends of the legs merge and the opposite ends of the leg are free of each other but have locations that abut each other when the legs are deflected toward each other.
- the abutting locations are close enough that the legs can be deflected together until the locations abut each other, without substantial plastic deformation of any portion of the key.
- the presence of free ends allows the legs to be resiliently deflected by a large amount, which can assure at least moderate retention force in a large board hole and which can aid in retention of the key in the connector housing before the connector is installed on the circuit board.
- the fact that the free ends abut each other when the key is fully installed in the circuit board, results in large resistance to further deflection of the legs toward each other, to provide for high retention force under most circumstances.
- the upper end portions of the legs can form upper projections while the middles of the legs can form lower projections.
- the projections form shoulders that abut upper and lower key-support surfaces on the connector housing to fix the position of the key on the connector housing prior to installation of the connector on the circuit board.
- the key is preferably formed with the upper ends of the legs being free and the lower ends of the legs merging, with barbs that engage the walls of the circuit board hole lying closer to the lower ends of the legs than to the upper ends thereof.
- Fig. 1 is a partially sectional isometric view of a connector system which includes a pair of connectors that are each mounted on a corresponding circuit board, with the connectors lying close to a position where they would begin to mate.
- Fig. 6 is a side elevation view of a holdown key constructed in accordance with another embodiment of the invention.
- Figs. 2 ' and 3 illustrate some details of the socket or female connector 12.
- Each end 32, 34 of the connector housing 30 has a vertically-extending slot 50 which receives a key 40, 42.
- the key has an upper portion 52 which lies in an upper portion 54 of the slot, and has a lower portion 56 which lies in and below a corresponding hole 44 in the circuit board 16.
- Fig. 4 illustrates details of the key 40, showing it in its initial configuration, before it is installed on the connector housing.
- the key is symmetrical about a vertical axis 68, so the legs 60, 62 are mirror images of each other.
- Each leg has an upper end portion 70, 70a, a lower end portion 72, 72a, and a middle 74, 74a.
- the lower end portions 72, 72a merge at 76, and the arms cannot move or pivot relative to each other at the joined or merged location 76.
- the upper end portions 70, 70a of the arms are free of each other, so they can move towards and away from each other.
- Each upper end portion has a protuberance forming a convex abutting location 80, 80a.
- the abutting locations can abut each other when the upper end portions of the legs are deflected together.
- the legs are long and thin enough, and the abutting locations 80, 80a are close enough, that the locations can abut without plastic deformation of any portion of the key (relative to the shape of the key in its initial configuration of Fig. 4) .
- the convex locations 80, 80a abut each other, the upper end portions 70, 70a of the arms can still pivot relative to each other, as opposed to being fixed to each other as are the lower end portions.
- Fig. 4 shows the initial control gap at A, the partially closed gap at B which exists when the key is installed on the connector but not on the circuit board, and also shows the fully installed gap C which has zero width and which occurs when the key is fully installed in the circuit board.
- Fig. 5 shows the key 40 after it has been installed on the connector housing 30, and after the connector housing with the key thereon has been installed on the circuit board 16, but prior to soldering of the circuit board. It can be seen that the gap C is fully closed, and the barbs 64, 64a and 66, 66a press firmly against the walls 82 of the circuit board hole 40.
- the circuit board includes a base 84, and may also include a layer 86 of conductive material on the walls of the hole (or may not include such layer) .
- the arms have been deflected together sufficiently for the barbs to dig into the walls 82 of the hole to securely anchor the key in place. Usually, after such anchoring the assembly is soldered to solder the metal key to the plated walls of the hole.
- the dug-in barbs securely anchor the connector housing in place to resist upperward forces in the direction U which occur when a mating connector is unmated from the connector 12. Very secure anchoring of the barbs in the board holes is required even in the case of soldering, to avoid large forces on the solder which cannot be withstood by it.
- the connector 12 can be initially assembled by installing the key 40 into the connector housing slot 50, with installation in the circuit board holes occurring later. It is highly desirable that the key be securely retained in the slot 50, and in a manner that closely fixes the orientation of the key in the slot, to assure that the tapered nose 90 at the bottom of the key will later accurately enter the circuit board hole.
- Each leg 60, 62 of the key includes upper projections 92, 92a and lower projections 94, 94a which serve to retain the key on the connector.
- a downwardly-facing upper shoulder 100 on the upper projection 92 lies substantially against an upper key- supporting surface 102 on the connector housing.
- a lower shoulder 104 on the lower projection lies adjacent to a lower key-supporting surface 106 on the connector housing. The upper and lower shoulders 100, 104 prevent the key from moving substantially up and down relative to the connector housing.
- the key When the key is installed, it lies in the position 40A shown in phantom lines in Fig. 5, with the arms 60, 62 having been deflected together so the gap has the partially closed width shown at B. This is caused by in the outer surfaces 101, 101a of the arms that lie between the shoulders 102, 104 bearing against the walls of a narrowed slot portion 110 which lies between the upper and lower surfaces 102, 106. The pressure of the legs against the narrow slot portion 110 results in the key being held stably in position and with the nose 90 lying substantially on the vertical axis 112 of the slot.
- Figs. 1 - 5 Applicant has constructed connectors of the type illustrated in Figs. 1 - 5 and found them to operate well.
- Each key had an overall height A (Fig. 4) of 0.187 inch (4.75 millimeters) .
- the height A also can be expressed as 187 mils (one mil equals one thousandth inch) .
- Fig. 4 In the initial configuration shown in Fig.
- the separation B of the outside 101, 101a of the legs between the upper and lower shoulders 100, 104 was 43 mils (1.09mm) ⁇ 2 mils
- the distance C between the lower projections 94, 94a was 58 mils (1.47mm) ⁇ 2 mils
- the distance D between the upper barbs 66, 66a was 55 mils (1.41mm) ⁇ 2 mils
- the distance E between the lower barbs 64, 64a was 54 mils (1.38mm) ⁇ 2 mils.
- the width of the initial control gap A was 10 mils (0.25mm) ⁇ 1 mil.
- the inside diameter F of the circuit board hole was 0.47 mils (1.19mm) + 2 mils o - 3 mils.
- Fig. 6 shows another key 120 which can be installed in the housing slot of Fig. 5.
- the key 120 has a pair of arms 122, 122a with lower end portions 124, 124a designed to project through a circuit board hole and to hold a pair of barbs 130, 132 in the circuit board hole.
- the lower end portions 124, 124a are unconnected so they are free to deflect toward and away from each other.
- Opposite upper end portions 134, 134a of the arms are rigidly connected together, with the upper end portions being designed to lie in the slot of the connector housing.
- the abutment of the abutting locations 140, 140a results in moderately high resistance of the beams and barbs thereon to deflection towards each other, and yet stresses in the lower end portions 124, 124a of the beams is minimized because the beams are not rigidly connected to each other but can pivot relative to each other about the abutting locations 140, 140a.
- the invention provides an electrical connector with keys that project into holes of a circuit board when the connector is mounted on the board.
- Each key has a pair of largely vertically extending arms that are deflected closer together when the lower portion of the key is projected into the circuit board hole.
- Applicant constructs the key so that first adjacent ends of the legs are rigidly joined together by merging into each other, while the opposite second end portions of the legs are free to move towards and away from each other but have abutting locations that abut each other when the arms are installed fully into the circuit board hole.
- the key lies in a narrow slot in the connector housing, and the slot can have a narrow portion which holds part of the middle of the key.
Landscapes
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US1992/002083 WO1993018560A1 (en) | 1992-03-13 | 1992-03-13 | Holdown key for low profile connector |
AU22641/92A AU2264192A (en) | 1992-03-13 | 1992-03-13 | Holdown key for low profile connector |
EP92914796A EP0630530B1 (en) | 1992-03-13 | 1992-03-13 | Holdown key for low profile connector |
US07/847,041 US5415565A (en) | 1992-03-13 | 1992-03-13 | Holdown key for low profile connector |
DE69207434T DE69207434T2 (en) | 1992-03-13 | 1992-03-13 | LOCKING INSERT FOR A LOW PROFILE CONNECTOR |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US1992/002083 WO1993018560A1 (en) | 1992-03-13 | 1992-03-13 | Holdown key for low profile connector |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993018560A1 true WO1993018560A1 (en) | 1993-09-16 |
Family
ID=22230888
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1992/002083 WO1993018560A1 (en) | 1992-03-13 | 1992-03-13 | Holdown key for low profile connector |
Country Status (5)
Country | Link |
---|---|
US (1) | US5415565A (en) |
EP (1) | EP0630530B1 (en) |
AU (1) | AU2264192A (en) |
DE (1) | DE69207434T2 (en) |
WO (1) | WO1993018560A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0676832A1 (en) * | 1994-04-07 | 1995-10-11 | Framatome Connectors International | Retention device |
US5460543A (en) * | 1994-09-12 | 1995-10-24 | Itt Corporation | Boardlock assembly |
EP0684667A2 (en) * | 1994-05-24 | 1995-11-29 | The Whitaker Corporation | Self-retaining board lock |
EP0997982A2 (en) * | 1998-10-30 | 2000-05-03 | The Whitaker Corporation | Electrical connector for printed circuit boards |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5733142A (en) * | 1996-02-29 | 1998-03-31 | Berg Technology, Inc. | Assembly for retaining a right angled connector on a printed circuit board |
US5803765A (en) * | 1996-04-02 | 1998-09-08 | Molex Incorporated | Electrical connector with universal boardlock |
US5989064A (en) * | 1998-03-18 | 1999-11-23 | The Whitaker Corporation | Board lock |
US6080012A (en) * | 1998-11-03 | 2000-06-27 | Hon Hai Precision Ind. Co., Ltd. | Electrical connector having a retention mechanism |
US6086417A (en) * | 1998-11-18 | 2000-07-11 | Hon Hai Precision Ind. Co., Ltd. | Electrical connector with fastening device |
US6139362A (en) * | 1999-07-30 | 2000-10-31 | Berg Technology, Inc. | Fastener for connecting an electrical device to a substrate |
EP1187260A1 (en) * | 2000-09-06 | 2002-03-13 | Siemens Aktiengesellschaft | Terminal for electrical and mechanical connection to a printed circuit board |
US6700800B2 (en) * | 2002-06-14 | 2004-03-02 | Intel Corporation | Retainer for circuit board assembly and method for using the same |
US20040168539A1 (en) * | 2003-02-28 | 2004-09-02 | Honeywell International Inc. | Brake handle with integral position sensing |
US20060148283A1 (en) * | 2004-12-30 | 2006-07-06 | Minich Steven E | Surface-mount electrical connector with strain-relief features |
US7341482B2 (en) * | 2005-02-04 | 2008-03-11 | Fci Americas Technology, Inc. | Strain relief for ball grid array connectors |
US20060240699A1 (en) * | 2005-04-21 | 2006-10-26 | Fci Americas Technology, Inc. | Ball grid array connector guidance, alignment, and strain relief |
US7883344B1 (en) * | 2008-09-26 | 2011-02-08 | Emc Corporation | Electrical connector |
US8702052B2 (en) | 2012-07-05 | 2014-04-22 | Globe Motors, Inc. | Retention structure for heat generating component |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0366964A1 (en) * | 1988-11-04 | 1990-05-09 | The Whitaker Corporation | Connector with barbed boardlock |
US5080611A (en) * | 1990-12-21 | 1992-01-14 | Amp Incorporated | Boardlock for common-hole double-sided mounting |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2137210A (en) * | 1937-03-17 | 1938-11-15 | Albert H Tinnerman | Snap-stud fastening means |
US2495103A (en) * | 1945-05-23 | 1950-01-17 | Huppert William | Anchoring device |
GB802873A (en) * | 1955-09-28 | 1958-10-15 | Gen Electric Co Ltd | Improvements in or relating to inserts for articles of moulded insulation material |
US2933007A (en) * | 1956-03-27 | 1960-04-19 | Boots Aircraft Nut Corp | Flat expanding insert having an arched connecting member |
JPS5141222B2 (en) * | 1972-12-06 | 1976-11-09 | ||
DE2328620C3 (en) * | 1973-06-05 | 1979-11-08 | Cannon Electric Gmbh, 7056 Weinstadt | Multipole contact |
US4274700A (en) * | 1977-10-12 | 1981-06-23 | Bunker Ramo Corporation | Low cost electrical connector |
US4583807A (en) * | 1983-12-13 | 1986-04-22 | Amp Incorporated | Surface mount connector |
JPH035100Y2 (en) * | 1985-01-23 | 1991-02-08 | ||
JPS61180464U (en) * | 1985-04-30 | 1986-11-11 | ||
US4710852A (en) * | 1986-09-26 | 1987-12-01 | General Motors Corporation | Spring retainer for encapsulated semiconductor device |
US4857017A (en) * | 1987-04-24 | 1989-08-15 | Maxconn, Inc. | Support device for wires in multi-contact connectors |
US4842552A (en) * | 1988-03-04 | 1989-06-27 | Amp Incorporated | Tolerance forgiving boardlock |
US4943244A (en) * | 1989-12-26 | 1990-07-24 | Molex Incorporated | Grounding electrical connector |
US5135412A (en) * | 1991-01-29 | 1992-08-04 | E. I. Du Pont De Nemours And Company | Hold-down terminal |
US5171165A (en) * | 1991-06-28 | 1992-12-15 | Foxconn International | Electrical connector incorporating an improved hold-down device for securing to a printed circuit board, or the like |
US5190480A (en) * | 1991-07-17 | 1993-03-02 | Foxconn International, Inc. | All-in-one interconnection assembly |
US5154634A (en) * | 1991-12-12 | 1992-10-13 | Amp Incorporated | Connector holding device |
US5228870A (en) * | 1992-07-30 | 1993-07-20 | Amp Incorporated | Connector to circuit board securing arrangement with holding device insertion depth compensator |
-
1992
- 1992-03-13 EP EP92914796A patent/EP0630530B1/en not_active Expired - Lifetime
- 1992-03-13 DE DE69207434T patent/DE69207434T2/en not_active Expired - Fee Related
- 1992-03-13 WO PCT/US1992/002083 patent/WO1993018560A1/en active IP Right Grant
- 1992-03-13 US US07/847,041 patent/US5415565A/en not_active Expired - Lifetime
- 1992-03-13 AU AU22641/92A patent/AU2264192A/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0366964A1 (en) * | 1988-11-04 | 1990-05-09 | The Whitaker Corporation | Connector with barbed boardlock |
US5080611A (en) * | 1990-12-21 | 1992-01-14 | Amp Incorporated | Boardlock for common-hole double-sided mounting |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0676832A1 (en) * | 1994-04-07 | 1995-10-11 | Framatome Connectors International | Retention device |
EP0684667A2 (en) * | 1994-05-24 | 1995-11-29 | The Whitaker Corporation | Self-retaining board lock |
EP0684667A3 (en) * | 1994-05-24 | 1996-07-03 | Whitaker Corp | Self-retaining board lock. |
KR100347241B1 (en) * | 1994-05-24 | 2002-11-30 | 더 휘태커 코포레이션 | Electrical connector with board fixing mechanism |
US5460543A (en) * | 1994-09-12 | 1995-10-24 | Itt Corporation | Boardlock assembly |
EP0997982A2 (en) * | 1998-10-30 | 2000-05-03 | The Whitaker Corporation | Electrical connector for printed circuit boards |
EP0997982A3 (en) * | 1998-10-30 | 2002-01-16 | The Whitaker Corporation | Electrical connector for printed circuit boards |
Also Published As
Publication number | Publication date |
---|---|
EP0630530B1 (en) | 1996-01-03 |
US5415565A (en) | 1995-05-16 |
DE69207434D1 (en) | 1996-02-15 |
EP0630530A1 (en) | 1994-12-28 |
DE69207434T2 (en) | 1996-08-01 |
AU2264192A (en) | 1993-10-05 |
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