EP1032078A1 - Abgeschirmter elektrischer Verbinder - Google Patents

Abgeschirmter elektrischer Verbinder Download PDF

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Publication number
EP1032078A1
EP1032078A1 EP99103612A EP99103612A EP1032078A1 EP 1032078 A1 EP1032078 A1 EP 1032078A1 EP 99103612 A EP99103612 A EP 99103612A EP 99103612 A EP99103612 A EP 99103612A EP 1032078 A1 EP1032078 A1 EP 1032078A1
Authority
EP
European Patent Office
Prior art keywords
shield
housing
shielded electrical
electrical connector
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.)
Withdrawn
Application number
EP99103612A
Other languages
English (en)
French (fr)
Inventor
Cheng Te Lin
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.)
Molex LLC
Original Assignee
Molex LLC
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 Molex LLC filed Critical Molex LLC
Priority to EP99103612A priority Critical patent/EP1032078A1/de
Publication of EP1032078A1 publication Critical patent/EP1032078A1/de
Withdrawn legal-status Critical Current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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6591—Specific features or arrangements of connection of shield to conductive members
    • H01R13/6594—Specific features or arrangements of connection of shield to conductive members the shield being mounted on a PCB and connected to conductive members

Definitions

  • This invention generally relates to the art of electrical connectors and, particularly, to connectors which are shielded against ingress and egress of electromagnetic and radio frequency interferences.
  • EMI electromagnetic interference
  • RFID radio frequency interference
  • a typical electrical connector includes a dielectric housing mounting a plurality of conductive terminals.
  • the housing may have a forward mating section.
  • shields are provided about the dielectric housing and, particularly, the mating section thereof.
  • Such shields often are fabricated of stamped and formed conductive sheet metal material. the sheet material is stamped and then formed or folded into an enclosure for the connector housing.
  • the shields have multiple functions in various connector applications, and the functions may not be consistent with the material of the shield.
  • the shield may have spring portions, such as cantilevered spring fingers, for engaging the shield of a complementary mating connector. It is highly desirable that these spring fingers have high resiliency or resilient power so that they establish a good positive engagement with the shield of the complementary mating connector.
  • a good material for the shield in order to provide high resilient forces is stainless steel, for instance.
  • stainless steel is relatively expensive.
  • a material such as phosphor bronze may be used and then electroplated. However, this material does not provide the positive resilient forces of the stainless steel.
  • shields often are used on connectors which are mounted on a printed circuit board, and the shield may have one or more legs for connection to ground circuits on the board.
  • the connector may be mounted at an aperture in a panel, such as a backplane, and the shield also may have projecting flanges for grounding to the backplane about the aperture. Therefore, the shield should be highly conductive, and stainless steel material is not the best choice for these grounding functions. The electroplated phosphor bronze material would be more appropriate.
  • the present invention is directed to solving the above problems by providing a multi-component shield of different materials for different purposes such as described above.
  • An object, therefore, of the invention is to provide a new and improved shielded electrical connector of the character described.
  • the connector includes a dielectric housing having a front mating end for interfacing with a complementary mating connector.
  • a plurality of terminals are mounted on the housing and include contact portions for engaging appropriate terminals of the mating connector.
  • a first shield of a first material is mounted on the housing about at least a front portion thereof and includes at least one spring portion for engaging a shield of the mating connector.
  • a second shield of a second material is mounted about at least a rear portion of the housing and a rear portion of the front shield.
  • the first shield includes at least one receptacle at the front mating end of the housing for receiving the mating connector.
  • the spring portion of the first shield is a cantilevered spring finger projecting into the receptacle.
  • the first shield is fabricated of a highly resilient material such as stainless steel or the like so that the spring finger applies a strong engaging force against the shield of the mating connector.
  • the first shield may also include at least one outwardly projecting stop flange for engaging an edge of the second shield.
  • the second shield includes at least one outwardly projecting flange for engaging a panel adjacent an aperture at which the connector is mountable.
  • the second shield also includes at least one depending leg for connection to a circuit trace on a printed circuit board.
  • the second shield is fabricated of a highly conductive, readily solderable material, such as an electroplated bronze material, so that the projecting flange and the depending leg establish good ground connections to the panel and the circuit board.
  • the housing having a platform projecting forwardly into the receptacle, with the contact portions of the terminals juxtaposed on the platform.
  • the housing includes at least one recess in an outer surface thereof for receiving a section of the first shield to retain the first shield on the housing.
  • the recess in the housing and the section of the first shield are complementarily T-shaped.
  • a shielded electrical connector according to the prior art is shown to include a dielectric housing 1, a front shield 2 and a rear shield 3.
  • the housing typically is molded of plastic material, and the front and rear shields are stamped and formed of sheet metal material.
  • Housing 1 has a pair of insertion slots 4 in a front mating face la of the housing.
  • a plurality of terminals are mounted in the housing, and the terminals have tail portions 5 depending from a bottom face 1b of the housing for insertion into appropriate holes in a printed circuit board and for connection, as by soldering, to appropriate circuit traces on the board and/or in the holes.
  • the terminals have contact portions (not shown) exposed within insertion slots 4 for engaging appropriate terminals of a complementary mating connector inserted into the slots.
  • Front metal shield 2 and rear metal shield 3 of the prior art connector substantially surround housing 1 to provide EMI protection for the connector.
  • the shields are latched together by a pair of latching tongues 8 on opposite sides of rear shield 3 which snap into latching holes 9 in opposite sides of front shield 2.
  • Front metal shield 2 of the prior art connector includes a pair of front grounding fingers 6 stamped and formed out of a front plate 2a of the shield, along with a pair of grounding legs 7 depending from side walls 2b of the shield for insertion into appropriate holes in the printed circuit board and for connection, as by soldering, to appropriate ground traces on the board and/or in the holes.
  • Front shield 2 has a pair of receptacles 2c aligned with insertion slots 4 of housing 1 for receiving the complementary mating connector.
  • a plurality of cantilevered fingers 2d project rearwardly from the edges of receptacles 2c for engaging retention recesses 4a within the insertion slots 4 to retain the front shield of the housing 1.
  • the prior art connector of Figure 1 may be mounted within an enclosure "A" shown in Figure 2, which may be a computer housing.
  • a mating connector-receiving hole A1 is divided by a transverse strip A2 which is engaged by grounding fingers 6 at the front of metal shield 2 of the prior art connector.
  • the split hole A1 is aligned with receptacles 2c of front shield 2 and insertion slots 4 of housing 1 of the connector.
  • the shielded electrical connector of the present invention includes a dielectric housing 10, a front or inner shield 11 and a rear or outer shield 12.
  • the connector is adapted for mounting on a printed circuit board, such as in a computer for receiving a complementary mating connector from a peripheral apparatus.
  • Housing 10 is molded of dielectric material such as plastic or the like and includes a pair of generally parallel plug boards or terminal platforms 13.
  • a plurality of terminals 14 are mounted in the housing and include tail portions 14a depending therefrom for insertion into appropriate holes in the printed circuit board and for connection, as by soldering, to appropriate circuit traces on the board and/or in the holes.
  • the terminals have contact portions 14b (shown in phantom) juxtaposed on the bottom sides of terminal platforms 13 for engaging appropriate terminals on the mating connector.
  • a partition wall 15 is disposed between terminal platforms 13 and spaced generally equidistant therefrom.
  • a forwardly extending bottom platform 16 is spaced below the bottom terminal platform 13.
  • a pair of mounting grooves 19 are formed in the underside of bottom platform 16.
  • the top and sides of housing 10 are recessed, as at 17, and include T-shaped recesses 18 for facilitating mounting inner shield 11 on the housing.
  • Inner shield 11 is stamped and formed of highly resilient sheet metal material, such as stainless steel.
  • the shield has a strip-like front face 20 separating a pair of receptacles 21.
  • a plurality of spring fingers 22 are stamped and formed out of the side walls of the shield and project into receptacles 21 for engaging the shield of the mating connector with high resilient forces provided by the stainless steel material of the shield.
  • a plurality of stop flanges 23 project outwardly from the front of inner shield 11 for abutment by a front edge 12a (Fig. 5) of outer shield 12.
  • the rear of shield 11 is mounted onto recessed area 17 of housing 10, and the inner shield has three T-shaped sections 14 for positioning in the T-shaped recesses 18 of the housing to hold the inner shield on the housing.
  • inner shield 11 has a latch tab 25 stamped and formed out of each opposite side thereof and projecting outwardly therefrom for holding outer shield 12 on the connector, as described hereinafter.
  • Outer shield 12 is box-shaped for mounting over housing 10 and inner shield 11 as seen in Figure 3.
  • the outer shield has a plurality of grounding legs 26 for insertion into appropriate holes in the printed circuit board and for connection, as by soldering, to appropriate ground traces on the board and/or in the holes.
  • a grounding flange 27 projects outwardly from each opposite side of outer shield 12 at front edge 12a thereof for engaging a panel or backplane adjacent an aperture at which the connector is mountable, as described hereinafter.
  • Each side wall of outer shield 12 includes a latch aperture 28 for receiving latch tabs 25 of inner shield 11 to hold the outer shield onto the inner shield and the housing.
  • the outer shield includes a plurality of inwardly directed hooked flanges 29 for sliding into mounting grooves 19 in the bottom of platform 16 of the housing to prevent the side walls of the outer shield from spreading apart. Because grounding legs 26 and grounding flanges 27 of outer shield 12 preferably should be of high conductivity, the outer shield preferably is fabricated of such materials as an electroplated phosphor bronze material.
  • the connector can be mounted at aperture B1 in enclosure B of Figure 6.
  • Grounding flanges 27 engage the panel around the aperture B1 to common the shields 11 and 12 to the enclosure B. Because the grounding flanges 27 project outwardly from each opposite side at front edges 12a of outer shield 12, the aperture B1 does not require a transfer strip like A2 of aperture A1 from the prior art. Accordingly, the apertures in the enclosure for accommodating the connector of the present invention is more simple.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
EP99103612A 1999-02-25 1999-02-25 Abgeschirmter elektrischer Verbinder Withdrawn EP1032078A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99103612A EP1032078A1 (de) 1999-02-25 1999-02-25 Abgeschirmter elektrischer Verbinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99103612A EP1032078A1 (de) 1999-02-25 1999-02-25 Abgeschirmter elektrischer Verbinder

Publications (1)

Publication Number Publication Date
EP1032078A1 true EP1032078A1 (de) 2000-08-30

Family

ID=8237631

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99103612A Withdrawn EP1032078A1 (de) 1999-02-25 1999-02-25 Abgeschirmter elektrischer Verbinder

Country Status (1)

Country Link
EP (1) EP1032078A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10319249B4 (de) * 2003-04-11 2006-12-28 Compal Electronics, Inc. Platinen-Steckverbinder

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0430105A1 (de) * 1989-11-29 1991-06-05 Hosiden Corporation Steckdose für mehrpoligen Verbinder
US5637015A (en) * 1995-08-31 1997-06-10 Hon Hai Precision Ind. Co., Ltd. Shielded electrical connector
US5727970A (en) * 1995-11-01 1998-03-17 Ddk Ltd. Interface connector
US5755595A (en) * 1996-06-27 1998-05-26 Whitaker Corporation Shielded electrical connector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0430105A1 (de) * 1989-11-29 1991-06-05 Hosiden Corporation Steckdose für mehrpoligen Verbinder
US5637015A (en) * 1995-08-31 1997-06-10 Hon Hai Precision Ind. Co., Ltd. Shielded electrical connector
US5727970A (en) * 1995-11-01 1998-03-17 Ddk Ltd. Interface connector
US5755595A (en) * 1996-06-27 1998-05-26 Whitaker Corporation Shielded electrical connector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10319249B4 (de) * 2003-04-11 2006-12-28 Compal Electronics, Inc. Platinen-Steckverbinder

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