EP0335438A2 - Connector for coaxial cables - Google Patents

Connector for coaxial cables Download PDF

Info

Publication number
EP0335438A2
EP0335438A2 EP89200700A EP89200700A EP0335438A2 EP 0335438 A2 EP0335438 A2 EP 0335438A2 EP 89200700 A EP89200700 A EP 89200700A EP 89200700 A EP89200700 A EP 89200700A EP 0335438 A2 EP0335438 A2 EP 0335438A2
Authority
EP
European Patent Office
Prior art keywords
connector
fact
coaxial cable
dowel
lead
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.)
Granted
Application number
EP89200700A
Other languages
German (de)
French (fr)
Other versions
EP0335438B1 (en
EP0335438A3 (en
Inventor
Sandrino Valeri
Sauro Sciarma
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.)
HELMAN ELETTRONICA SpA
Original Assignee
HELMAN ELETTRONICA SpA
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 HELMAN ELETTRONICA SpA filed Critical HELMAN ELETTRONICA SpA
Priority to AT89200700T priority Critical patent/ATE101306T1/en
Publication of EP0335438A2 publication Critical patent/EP0335438A2/en
Publication of EP0335438A3 publication Critical patent/EP0335438A3/en
Application granted granted Critical
Publication of EP0335438B1 publication Critical patent/EP0335438B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
    • H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
    • H01R24/50—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency mounted on a PCB [Printed Circuit Board]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
    • H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
    • H01R24/52—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency mounted in or to a panel or structure
    • H01R24/525—Outlets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2103/00—Two poles

Definitions

  • This invention relates to a connector which can be used on any type of electronic and/or electrical equipment which requires connection to a coaxial cable in order to function, with particular reference to the construction of distribution systems of radio and television signals.
  • the final result is that the signal received is altered or at least subharmonic disturbance is introduced.
  • This invention eliminates all this since the cable and the electronic circuit are only connected electrically, all parasitic inductances being isolated and cut out, at the same time obtaining a good level of screening thanks to the special stop dowel which is electrically earthed to the mass of the equipment.
  • the invention comprises a connector which houses an insulated contact pin onto which is screwed a stop dowel with an insulated washer which screws down the head of the live lead of the coaxial cable.
  • This connector is also extremely practical since the cable does not have to be inserted into a gauged aperture but into the special housing in the flat, lightly knurled head of the contact pin and it is then screwed down by means of the insulated stop dowel.
  • the above-mentioned characteristics permit a connection to be obtained and this permits the whole equipment to function over a range of frequencies up to 2 GHz, maintaining relatively limited dimensions so as to permit easy use of the devices (TV sockets, various distributors) in the special flush-mounted wall boxes.
  • the connector 1 in question comprises a metal box structure 2, forming part of the body 3 of the socket 4, in which two cylindrical threaded seats 5 have been hollowed out, provided with apertures 6 at the front and having a profile 7 at the back which permits the insertion of the insulated element 8, into which the connecting pin 9 is inserted.
  • the aforesaid element 8 is inserted up to the underlying counterboring 11, and only the terminal 12 of the pin 9 pierces through the lower part of the counterboring 11 and is then soldered to the circuit plate 13 of the socket 4.
  • a stop dowel 14 consisting of an external threaded hollow body 15 into which a flexible metal element 17 and the insulated presser 16 are inserted, is screwed into the aforesaid cylindrical threaded seats 5.
  • the said stop dowel 14 has an internal circumferential rib 18 in order to reduce the attrition between the internal seat 19 and the presser 16 which is subject to axial play during screwing down.
  • the socket 4 is already set up for the coaxial connection.
  • the live lead 21 is inserted into the connector terminals in correspondance to the flat knurled head 22 of the connecting pin 9 and the dowel 14 is screwed down completely thus ensuring the electrical connection with the circuit board 13 which is underneath.
  • the head 22 of the pin 9 is knurled to improve the hold of the internal conductor.
  • the braiding 23 of the two coaxial cables is earthed by a traditional fixing plate 24 provided with a threaded locking element 25 located in a central position.
  • the external body of the connector can be of a different external shape and the internal sizes can be different in order to adopt to the various types of sockets and the various types of utilisations foreseen.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Multi-Conductor Connections (AREA)
  • Communication Cables (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

A connector for coaxial cables is described having low parasitic inductance and capacitance which permits the typical impedance value of the coaxial cable to which it is connected to be maintained unaltered, and also creates good screening thanks to a special stop dowel which is electrically earthed to the equipment in which the connection between the printed circuit of the user equipment and the lead of the coaxial cable is obtained by means of a pin held in position between insulated elements and thus having no contact with the external metal parts of the connector.

Description

  • This invention relates to a connector which can be used on any type of electronic and/or electrical equipment which requires connection to a coaxial cable in order to function, with particular reference to the construction of distribution systems of radio and television signals.
  • Its special characteristic is that it permits secure circuit connection without changing the typical impedance value of the coaxial cable.
  • It is known that various types of metal terminals are used to connect coaxial cables to electronic outlet boards, particularly in the connections of radio and television sockets. The disadvantage of these metal terminals is that they alter the typical impedance value of the coaxial cables because of the effect of the parasitic inductance present in the socket itself.
  • In the case of high frequencies, the final result is that the signal received is altered or at least subharmonic disturbance is introduced.
  • This invention eliminates all this since the cable and the electronic circuit are only connected electrically, all parasitic inductances being isolated and cut out, at the same time obtaining a good level of screening thanks to the special stop dowel which is electrically earthed to the mass of the equipment.
  • In effect, the invention comprises a connector which houses an insulated contact pin onto which is screwed a stop dowel with an insulated washer which screws down the head of the live lead of the coaxial cable.
  • This connector is also extremely practical since the cable does not have to be inserted into a gauged aperture but into the special housing in the flat, lightly knurled head of the contact pin and it is then screwed down by means of the insulated stop dowel.
  • The above-mentioned characteristics permit a connection to be obtained and this permits the whole equipment to function over a range of frequencies up to 2 GHz, maintaining relatively limited dimensions so as to permit easy use of the devices (TV sockets, various distributors) in the special flush-mounted wall boxes.
  • These and the other characteristics will be explained more clearly in the course of the following detailed description provided purely as an indicative and non-limiting example of the scope of this invention, and supported by the various illustrations in the drawings attached herewith, in which:
    • Figure 1 shows a very enlarged front view of the pin-holder collet and the stop dowel dissasociated from the insulating element which exerts the connecting pressure on the conductor;
    • Figure 2 shows an exploded cross section of the various components of the connector in question;
    • Figure 3 shows a general view of the connector, demonstrating how the coaxial conductor is screwed down by the insulated stop dowel;
    • Figure 4 shows a full view of a radio and TV socket provided with the connector in question;
    • Figure 5 shows a full view of a radio and TV socket provided with the connector in question, showing the connected coaxial cables; and
    • Figure 6 shows a cross section of the metal box structure which contains the connectors according to this invention.
  • Referring now to the attached drawings, the connector 1 in question comprises a metal box structure 2, forming part of the body 3 of the socket 4, in which two cylindrical threaded seats 5 have been hollowed out, provided with apertures 6 at the front and having a profile 7 at the back which permits the insertion of the insulated element 8, into which the connecting pin 9 is inserted.
  • The aforesaid element 8 is inserted up to the underlying counterboring 11, and only the terminal 12 of the pin 9 pierces through the lower part of the counterboring 11 and is then soldered to the circuit plate 13 of the socket 4.
  • A stop dowel 14 consisting of an external threaded hollow body 15 into which a flexible metal element 17 and the insulated presser 16 are inserted, is screwed into the aforesaid cylindrical threaded seats 5.
  • The said stop dowel 14 has an internal circumferential rib 18 in order to reduce the attrition between the internal seat 19 and the presser 16 which is subject to axial play during screwing down.
  • At this point the socket 4 is already set up for the coaxial connection. After the cable 20 has been appropriately stripped, the live lead 21 is inserted into the connector terminals in correspondance to the flat knurled head 22 of the connecting pin 9 and the dowel 14 is screwed down completely thus ensuring the electrical connection with the circuit board 13 which is underneath. The head 22 of the pin 9 is knurled to improve the hold of the internal conductor.
  • Subsequently the braiding 23 of the two coaxial cables is earthed by a traditional fixing plate 24 provided with a threaded locking element 25 located in a central position.
  • It must be noted that the external body of the connector can be of a different external shape and the internal sizes can be different in order to adopt to the various types of sockets and the various types of utilisations foreseen.
  • This detailed description demonstrates that this connector is practical to use and produces a considerable reduction in disturbance induced by parasitic inductance, as has already been said.
  • Finally, it must be emphasised that the present embodiment does not limit the scope of this invention but, on the contrary, numerous modifications, additions, variations or replacements of elements can be made to this invention without affecting its principle or its objects as defined in the claims attached hereto.

Claims (6)

1. Connector for coaxial cable, characterised by the fact that it basically consists of an insulated element into which a flat headed pin is inserted in order to ensure an electrical connection between the printed circuit and the lead end of the coaxial cable, locked into this position by a special dowel.
2. Connector according to claim 1, characterised by the fact that the said connector in practice becomes part of the metal casing forming the flush-­mounted socket itself; for example for the antenna down-lead.
3. Connector according to claim 1, characterised by the fact that the stop dowel includes an insulated sleeve which is capable of exerting the necessary locking pressure on the live lead of the coaxial cable resting on the head of the pin, preferably knurled, in order to ensure a perfect electrical connection and at the same time reducing to practically a minimum the interference produced by parasitic inductance.
4. Connector according to claim 3, characteristised by the fact that the said stop dowel also has an elastic element, located in the housing seat of the insulated sleeve, by means of which the necessary contact between the live lead of the coaxial cable and the electrical connection pin is permanently maintained, even if the dowel is not fully screwed down.
5. Connector according to claim 1, characterised by the fact that the elimination of parasitic inductance permits the impedance which is typical of coaxial cables to be maintained practically unaltered, with particular reference to those used in radio and television equipment.
6. Connector for coaxial cables as previously described and as illustrated in the various drawings attached hereto, for the objects specified above.
EP89200700A 1988-03-31 1989-03-20 Connector for coaxial cables Expired - Lifetime EP0335438B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89200700T ATE101306T1 (en) 1988-03-31 1989-03-20 COAXIAL CABLE CONNECTOR.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT20051/88A IT1217384B (en) 1988-03-31 1988-03-31 TERMINAL FOR CONNECTION OF COAXIAL CABLES
IT2005188 1988-03-31

Publications (3)

Publication Number Publication Date
EP0335438A2 true EP0335438A2 (en) 1989-10-04
EP0335438A3 EP0335438A3 (en) 1989-11-08
EP0335438B1 EP0335438B1 (en) 1994-02-02

Family

ID=11163424

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89200700A Expired - Lifetime EP0335438B1 (en) 1988-03-31 1989-03-20 Connector for coaxial cables

Country Status (5)

Country Link
EP (1) EP0335438B1 (en)
AT (1) ATE101306T1 (en)
DE (1) DE68912802T2 (en)
ES (1) ES2050778T3 (en)
IT (1) IT1217384B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0706239A3 (en) * 1994-10-05 1997-09-03 Solitra Oy Connection arrangement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2233198B2 (en) * 2003-11-15 2006-07-16 Televes, S.A. CONNECTION SYSTEM FOR COAXIAL CABLE.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE739043C (en) * 1937-06-02 1945-01-18 Paul Jordan Connection or junction box
CH238042A (en) * 1943-12-18 1945-06-15 Oerlikon Maschf Spring-loaded clamping screw for electrical power connections.
WO1987001520A1 (en) * 1985-08-28 1987-03-12 Hans Kolbe & Co. Aerial plug socket
DE8710240U1 (en) * 1987-07-25 1987-09-17 Adolf Strobel Antennenfabrik GmbH & Co KG, 5060 Bergisch Gladbach Antenna socket
DE8809761U1 (en) * 1988-07-30 1988-09-22 Kurt Wolf & Co Kg, 7547 Wildbad Antenna socket

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE739043C (en) * 1937-06-02 1945-01-18 Paul Jordan Connection or junction box
CH238042A (en) * 1943-12-18 1945-06-15 Oerlikon Maschf Spring-loaded clamping screw for electrical power connections.
WO1987001520A1 (en) * 1985-08-28 1987-03-12 Hans Kolbe & Co. Aerial plug socket
DE8710240U1 (en) * 1987-07-25 1987-09-17 Adolf Strobel Antennenfabrik GmbH & Co KG, 5060 Bergisch Gladbach Antenna socket
DE8809761U1 (en) * 1988-07-30 1988-09-22 Kurt Wolf & Co Kg, 7547 Wildbad Antenna socket

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0706239A3 (en) * 1994-10-05 1997-09-03 Solitra Oy Connection arrangement

Also Published As

Publication number Publication date
IT1217384B (en) 1990-03-22
DE68912802T2 (en) 1994-06-16
ATE101306T1 (en) 1994-02-15
ES2050778T3 (en) 1994-06-01
DE68912802D1 (en) 1994-03-17
IT8820051A0 (en) 1988-03-31
EP0335438B1 (en) 1994-02-02
EP0335438A3 (en) 1989-11-08

Similar Documents

Publication Publication Date Title
US4768962A (en) Feed-through connector for RF signals
EP0582145B1 (en) Coaxial connector for connecting two circuit boards
US6290538B1 (en) RJ type coaxial cable connector with visual indicator
EP1324429B1 (en) Right angle printed circuit board connector apparatus, methods and articles of manufacture
US4941831A (en) Coaxial cable termination system
US5062811A (en) Capacitive coupled connector for PCB grounding
US7488210B1 (en) RF terminator
US8231406B2 (en) RF terminator with improved electrical circuit
US4544227A (en) Shielded electrical connector
US5603639A (en) Shielded electrical connector
US5145382A (en) Molded plastic surface-mountable coaxial connector
US4138179A (en) Coaxial jack for printed circuit boards
US3958852A (en) Electrical connector
US4707039A (en) Coaxial connector for controlled impedance transmission lines
US5711676A (en) Vertically mounted cable plug
US7264493B2 (en) High frequency coaxial jack
US3594687A (en) Connector for coupling a coaxial cable to a printed circuit board or the like
US5044990A (en) RF coaxial connector
EP0335438A2 (en) Connector for coaxial cables
US7540771B2 (en) Right angle coaxial connector mountable on PCB
US5081434A (en) Filter connector
US4816612A (en) Shield case for antenna terminal
KR20210020652A (en) Multiple coaxial cable connector
JP3832159B2 (en) TV outlet
US5813867A (en) RF connector with quick disconnect

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

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19900111

17Q First examination report despatched

Effective date: 19920723

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

REF Corresponds to:

Ref document number: 101306

Country of ref document: AT

Date of ref document: 19940215

Kind code of ref document: T

REF Corresponds to:

Ref document number: 68912802

Country of ref document: DE

Date of ref document: 19940317

EPTA Lu: last paid annual fee
ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: UFFICIO BREVETTI RICCARDI & C.

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2050778

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: GR

Ref legal event code: FG4A

Free format text: 3011394

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
EAL Se: european patent in force in sweden

Ref document number: 89200700.6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19990316

Year of fee payment: 11

Ref country code: CH

Payment date: 19990316

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19990324

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19990325

Year of fee payment: 11

Ref country code: AT

Payment date: 19990325

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 19990326

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19990329

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19990331

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19990401

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19990416

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19990818

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000320

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000320

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000320

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000321

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000321

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000331

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000331

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000331

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000331

BERE Be: lapsed

Owner name: HELMAN ELETTRONICA S.P.A.

Effective date: 20000331

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: 20001001

EUG Se: european patent has lapsed

Ref document number: 89200700.6

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20000320

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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: 20001130

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20001001

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: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010103

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20010910

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: 20050320