EP0041420A1 - Connecteur électrique avec provision pour blindage électromagnétique - Google Patents
Connecteur électrique avec provision pour blindage électromagnétique Download PDFInfo
- Publication number
- EP0041420A1 EP0041420A1 EP81400733A EP81400733A EP0041420A1 EP 0041420 A1 EP0041420 A1 EP 0041420A1 EP 81400733 A EP81400733 A EP 81400733A EP 81400733 A EP81400733 A EP 81400733A EP 0041420 A1 EP0041420 A1 EP 0041420A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- connector
- elongated
- shell
- grounding strap
- electrical 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- Withdrawn
Links
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
- 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]
- H01R13/6581—Shield structure
- H01R13/6582—Shield structure with resilient means for engaging mating connector
- H01R13/6583—Shield structure with resilient means for engaging mating connector with separate conductive resilient members between mating shield members
Definitions
- This invention relates to an electrical connector with provision for electromagnetic shielding of'the type having a first connector'shell, a second connector shell, means for coupling the.first shell to the second shell, and a grounding strap secured around a portion of one of the shells to suppress electromagnetic radiations entering the connector.
- Electrical connectors are used to connect together a plurality of electrical wires into predetermined circuit relationship with another plurality of electrical wires.
- the interconnected wires convey signals from one circuit to another.
- One example ' of such a connector may be found in U.S. Patent No. 3,663,926.
- the circuits are very sensitive or the signals being conveyed are very weak and electromagnetic radiations entering into the connector can interfere with the signals being communicated between the circuits. When this occurs false signals are conveyed between the circuits.
- electromagnetic radiations may enter and interfere with the circuitry.
- the present invention overcomes the disadvantages and limitations of the prior art arrangements by providing an electrical'connector with provision for electromagnetic shielding of the type having a first connector shell, a second connector shell, means for coupling the first shell to the second shell, and a grounding strap secured around a portion of one of the shells to suppress electromagnetic radiations entering the connector, said grounding strap comprising; a substantially flat elongated piece of electrically conducting material; a first plurality of holes arranged along a common axis along one of the elongated sides of said elongated piece; a second plurality of holes arranged along a common axis along the other elongated side of said elongated piece; and a plurality of slits in said elongated piece, each of the slits extending from one of. the holes to the edge of the elongated side of said elongated piece furthest. from said one hole.
- the electrical'connector of the present invention- is advantageous in that the-grounding strap reduces the amount of electromagnetic radiations passing through the connector shells, and in that the configuration of the grounding strap maximizes the electrical contact between mated shells of the electrical connector.
- FIGURE 1 shows a connector shell 2 having mounted thereon a grounding strap 4.
- the connector shell generally includes a plurality of threads 22 for engaging another piece (not shown), an enlarged portion or shoulder 23, a recessed portion 24 and an end portion 25.
- the recess portion 24 receives the grounding strap 4 and also includes an annular groove 26 for receiving one end of the grounding strap 4.
- Securing the ends of the grounding strap is a sleeve 5.
- the last leg 44 at each end of the grounding strap 4 extends through the sleeve 5, thereby securing the grounding strap 4 to the shell 2.
- the legs 44 are defined by slits 43 extending across the grounding strap 4.
- FIGURE 2 illustrates the grounding strap 4 within a mated electrical connector.
- the electrical connector comprises: a first shell 1 having a plurality of electrical contacts 6 that mate with a plurality of contacts of a second shell 2.
- the first shell 1 and the second shell 2 are connected together by a coupling nut 3.
- the coupling nut 3 is rotably mounted to the second shell 2 and is coupled to the first shell 1 by threads 31.
- the grounding strap 4 is in the void 27 which might otherwise allow electromagnetic ra- diationsto pass through. the connector and to the signal carrying contacts 6.
- FIGURE 3 illustrates the details of.the grounding strap 4.
- the grounding strap 4 is stamped and formed from a flat piece of beryllium copper.
- Each slit 43 extends from one edge of the grounding strap 4 to one of the holes 41, 42.
- The'width of each slit is less than 13/100 mm, preferably formed by shearing.
- a slot which is larger than the slits, will allow electromagnetic radiations to pass through them. Accordingly, slots provide too much space-for electromagnetic radiations to pass while a slit minimizes the space that electromagnetic radiations may pass into the connector.
- the noise level (electromagnetic radiations) attenuated by a grounding strap with slots (about 25/100 mm), on a mated connector was about 108-114 decibels.
- the attenuation of the noise level on the same connector and under the same conditions but with a grounding strap with slits 10/100 mm was 120-126 decibels.
- the slits eliminated high frequency noise which could pass through slots.
- the holes 41 on one side of the grounding strap 4 are generally arranged on an axis that is parallel to the axis of the holes 42 arranged on the other side of the grounding strap 4.
- Each slit 43, cut into the grounding strap 4 is along a second axis perpendicular to the parallel axes of the holes 41 and 42, each second axis intersecting only one hole, i.e., either 41 or 42.
- the holes 41 and 42 provide strain relief, i.e., tearing the slits break the grounding strap.
- FIGURE 4 illustrates how the grounding strap 4 is formed to have a curvature and an end 45 which is bent at an angle of about 90°.from the main body of the grounding strap 4.
- the curvature of the grounding strap 4 allows it to be compressed radially inward'when the second shell ' 2 is mated with the first shell 1.
- the angled- end portion 45 of the grounding strap 4 is adapted to be placed in the groove 26 of the connector shell 2, shown in FIGURE 2.
- the angled end 45 and the groove 26 assist in maintaining the grounding strap 4 along a predetermined path around the connector shell 2.
- FIGURE 5 illustrates a side view of the oblong sleeve 5 shown in FIGURE 1.
- the oblong shape of the sleeve 5 minimizes the overall height of the sleeve so that it does not interfere with the mating of the connector shells 1 and 2.
Landscapes
- Coupling Device And Connection With Printed Circuit (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15571880A | 1980-06-02 | 1980-06-02 | |
US155718 | 1980-06-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0041420A1 true EP0041420A1 (fr) | 1981-12-09 |
Family
ID=22556522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81400733A Withdrawn EP0041420A1 (fr) | 1980-06-02 | 1981-05-08 | Connecteur électrique avec provision pour blindage électromagnétique |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0041420A1 (fr) |
JP (1) | JPS5721079A (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2464801A (en) * | 2008-10-01 | 2010-05-05 | Amphenol Corp | Grounding band for electrical connectors |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3336566A (en) * | 1965-02-01 | 1967-08-15 | Electronic Standards Corp Of A | Microwave push-on connectors |
US3466590A (en) * | 1968-01-12 | 1969-09-09 | Atomic Energy Commission | Grounding device in an electrical connector |
US3678445A (en) * | 1970-07-31 | 1972-07-18 | Itt | Electrical connector shield |
FR2360191A1 (fr) * | 1976-07-26 | 1978-02-24 | Automation Ind Inc | Dispositif de protection d'un connecteur electrique contre les frequences parasites et procede de fabrication de ce dispositif |
GB2025158A (en) * | 1978-07-07 | 1980-01-16 | Bendix Corp | Electrical connector having filter contacts mounted in a removable filter module |
US4239318A (en) * | 1979-07-23 | 1980-12-16 | International Telephone And Telegraph Corporation | Electrical connector shield |
US4248492A (en) * | 1979-08-31 | 1981-02-03 | The Bendix Corporation | Electrical connector assembly having means for shielding against electromagnetic interference |
-
1981
- 1981-05-08 EP EP81400733A patent/EP0041420A1/fr not_active Withdrawn
- 1981-06-02 JP JP8390981A patent/JPS5721079A/ja active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3336566A (en) * | 1965-02-01 | 1967-08-15 | Electronic Standards Corp Of A | Microwave push-on connectors |
US3466590A (en) * | 1968-01-12 | 1969-09-09 | Atomic Energy Commission | Grounding device in an electrical connector |
US3678445A (en) * | 1970-07-31 | 1972-07-18 | Itt | Electrical connector shield |
FR2360191A1 (fr) * | 1976-07-26 | 1978-02-24 | Automation Ind Inc | Dispositif de protection d'un connecteur electrique contre les frequences parasites et procede de fabrication de ce dispositif |
GB2025158A (en) * | 1978-07-07 | 1980-01-16 | Bendix Corp | Electrical connector having filter contacts mounted in a removable filter module |
US4239318A (en) * | 1979-07-23 | 1980-12-16 | International Telephone And Telegraph Corporation | Electrical connector shield |
US4248492A (en) * | 1979-08-31 | 1981-02-03 | The Bendix Corporation | Electrical connector assembly having means for shielding against electromagnetic interference |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2464801A (en) * | 2008-10-01 | 2010-05-05 | Amphenol Corp | Grounding band for electrical connectors |
CN101714729A (zh) * | 2008-10-01 | 2010-05-26 | 安费诺有限公司 | 用于电连接装置的接地带 |
US7753698B2 (en) | 2008-10-01 | 2010-07-13 | Amphenol Corporation | Grounding band for electrical connectors |
GB2464801B (en) * | 2008-10-01 | 2012-12-26 | Amphenol Corp | Grounding band for electrical connectors |
CN101714729B (zh) * | 2008-10-01 | 2014-03-19 | 安费诺有限公司 | 用于电连接装置的接地带 |
Also Published As
Publication number | Publication date |
---|---|
JPS5721079A (en) | 1982-02-03 |
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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: 19810513 |
|
AK | Designated contracting states |
Designated state(s): DE FR GB IT |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19820914 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: DUGUAY, FRANCIS JOSEPH Inventor name: PUNAKO, STEPHEN |