WO2016146253A1 - Improved device for the ground connection of coaxial cables - Google Patents

Improved device for the ground connection of coaxial cables Download PDF

Info

Publication number
WO2016146253A1
WO2016146253A1 PCT/EP2016/000457 EP2016000457W WO2016146253A1 WO 2016146253 A1 WO2016146253 A1 WO 2016146253A1 EP 2016000457 W EP2016000457 W EP 2016000457W WO 2016146253 A1 WO2016146253 A1 WO 2016146253A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
contact bar
gasket
internal contact
hook
Prior art date
Application number
PCT/EP2016/000457
Other languages
French (fr)
Inventor
Alberto VARALE
Original Assignee
Fi.Mo.Tec. S.P.A.
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 Fi.Mo.Tec. S.P.A. filed Critical Fi.Mo.Tec. S.P.A.
Priority to EP16710096.5A priority Critical patent/EP3111514B1/en
Priority to PL16710096T priority patent/PL3111514T3/en
Publication of WO2016146253A1 publication Critical patent/WO2016146253A1/en

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
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
    • H01R9/0512—Connections to an additional grounding conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
    • H01R9/0527—Connection to outer conductor by action of a resilient member, e.g. spring

Definitions

  • the present invention relates to an improved device for the ground connection of coaxial cables.
  • the field of the invention relates to coaxial cables, used for the transmission of electromagnetic signals in the telecommunications field.
  • the coaxial cables consist of a primary signal transmission conductor and a secondary shield conductor of the signal transmitted by the primary conductor, wherein the above-mentioned conductors are positioned reciprocally coaxial to each other .
  • ground connection devices of the coaxial cables are used, positioned in contact with the secondary conductor and fixed to the outer sheath of the coaxial cable.
  • the known art represented by Italian patent 1,393,532 describes a ground connection device for coaxial cables in which a contact bar is electrically connected to an internal contact, which is in turn electrically connected with the secondary conductor of the coaxial cable.
  • the fixing of the contact bar to the internal contact of the cable is effected by means of a protuberance, present on the same contact bar and suitable for being inserted inside a corresponding connection seat formed on the internal contact .
  • US 5,562,482A describes a ground connection device of coaxial cables in which the contact bar is connected to the grounding cable.
  • the main objective of the present invention is to provide an improved device for the ground connection of coaxial cables, which guarantees the stability of the electrical contact between the ground cable and the coaxial cable.
  • figure 1 illustrates the device of the invention in an overall perspective view
  • figure 2 illustrates a first embodiment of the device of the invention in an exploded view
  • figure 3 illustrates the detail of the connection system between the contact bar and internal contact of the device of figure 2;
  • figure 4 illustrates a sectional view of the device of figure 2 in an assembled position
  • figure 5 illustrates an exploded view of a second embodiment of the connection system between the contact bar and internal contact of the device of the invention
  • figure 6 illustrates a sectional view of the details of figure 5 in an assembled position
  • figure 7 illustrates a third embodiment of the device of the invention in an exploded view
  • figure 8 illustrates the device of figure 7 in an assembled state
  • figure 9 illustrates a further variant of the device of figure 1; - figures 10 and 11 respectively illustrate an exploded and horizontal sectional view of the device of figure 9; and
  • FIG. 12 illustrates the coaxial cable of the invention with the ground connection device of the previous figures assembled thereon.
  • the device of the invention for the ground connection of coaxial cables is indicated as a whole with 1 in figure 1. It comprises a metallic outer shell 2, in which a gasket 3 is housed, made of an elastomeric material, such as a synthetic rubber such as, for example, an EPDM (Ethylene-Propylene-Diene Monomer) rubber.
  • the device 1 also comprises a contact bar 4, at whose end 5 it is crimped onto the ground cable 6.
  • the opposite end 7 of the contact bar 4, i.e. that facing the gasket 3, is, on the other hand, suitable for being inserted in the pocket seat of the same gasket, composed of a first pass-through inlet section 8 and a second section 9, the latter closed by a bottom 10.
  • the hook 13 of the contact bar 4 is kept in a blocked position in the slot 14 of the internal contact 12 thanks to the elastic thrust exerted, in the direction of the arrow Fl of figure 4, by the bottom 10 of the section 9 of the pocket seat of the gasket 3 made of an elastomeric material, in response to the force insertion of the end 7 of the contact bar 4 inside the same section 9.
  • the internal contact 12 of the device of the invention is, in turn, kept in a stable position with respect to the contact bar 4, thanks to its housing inside the above-mentioned seat 11 envisaged in the gasket 3.
  • the contact bar 4 is pushed inside the pocket seat 8,9 of the gasket 3 in the direction of the arrow F2 of figure 3, until the hook 13 is completely brought beyond the edge 15 of the slot 14 of the internal contact 12.
  • the bottom 10 of the gasket 3 made of an elastomeric material, is elastically deformed generating, on the end 7 of the contact bar 4, an elastic thrust Fl (figure 4).
  • the internal contact 12 is provided by a hook 16 suitable for being engaged, with the procedures already described with reference to the previous figures, inside a slot 17 formed on the contact bar 4.
  • the hook 13 of the contact bar 4 is directly engaged on the edge 18 of the internal contact 12, again thanks to the thrust exerted by the elastomeric material of which the gasket 3 is formed.
  • a notch, not illustrated, suitable for guiding the coupling of the hook 13 on the above-mentioned internal contact, can be advantageously envisaged on the portion of the edge 18 of the internal contact 12, which receives the engagement with the hook 13.
  • the device 19 of the invention again comprises a gasket 3 made of an. elastomeric material, " and an internal contact 12, suitably shaped so as to house the contact bar 4, no longer on a horizontal plane as in the previous figures, but on a vertical plane or rotated by 90° with respect to the previous plane.
  • the coupling solutions are the same as those already represented in figures 4, 6 and 8, the first of which is reproduced, according to the variant under examination, in figure 11.
  • the coaxial cable provided with the device of the invention is illustrated in figure 12. It consists of a primary conductor 21 and a secondary conductor 22, separated by a dielectric material 23. An outer sheath
  • the gasket 3 of the latter guarantees a sealing action on the outer sheath 24. Furthermore, in correspondence with the position of the internal contact 12, the corresponding portion 25 of outer sheath 24 is removed, so as to create the necessary electrical contact between the secondary conductor 22 of the coaxial cable

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

A device for the ground connection of coaxial cables, of the type comprising an internal contact (12) electrically connected to the secondary conductor (22) of the coaxial cable (20), a contact bar (4) electrically connected to the above-mentioned internal contact (12) and having an end (5) to which the grounding cable (6) is fixed and an opposite end (7), a gasket (3) made of an elastomeric material provided with a seat (11) for the above-mentioned internal contact (12), and a pocket seat (8,9) having a bottom (10) for said end (7) of the contact bar (4), an outer metallic shell (2) also being envisaged for closing said device. In the device of the invention, a system is envisaged which effects and maintains the connection between said contact bar (4) and the above-mentioned internal contact (12), due to the elastic action (F1, F3) exerted by said gasket (3) made of an elastomeric material on the end (7) of the contact bar (4) housed inside said pocket seat (8, 9). With respect to analogous devices of the known art for the ground connection of coaxial cables, that according to the present invention offers the advantage of ensuring the stability of the electrical contact between the ground cable and the coaxial cable, at the same time maintaining the necessary coupling between the contact bar and the internal contact, effected without weldings and by means of mechanical connection.

Description

IMPROVED DEVICE FOR THE GROUND CONNECTION OF COAXIAL
CABLES
DESCRIPTION
The present invention relates to an improved device for the ground connection of coaxial cables.
The field of the invention relates to coaxial cables, used for the transmission of electromagnetic signals in the telecommunications field.
For this purpose, the coaxial cables consist of a primary signal transmission conductor and a secondary shield conductor of the signal transmitted by the primary conductor, wherein the above-mentioned conductors are positioned reciprocally coaxial to each other .
In installations of this type, it is also usual to effect the grounding of the coaxial cables, in order to dissipate any possible parasite currents and also any possible electrical discharges such as lightning.
For this purpose, ground connection devices of the coaxial cables are used, positioned in contact with the secondary conductor and fixed to the outer sheath of the coaxial cable.
The known art represented by Italian patent 1,393,532 describes a ground connection device for coaxial cables in which a contact bar is electrically connected to an internal contact, which is in turn electrically connected with the secondary conductor of the coaxial cable. In particular, the fixing of the contact bar to the internal contact of the cable is effected by means of a protuberance, present on the same contact bar and suitable for being inserted inside a corresponding connection seat formed on the internal contact .
This known solution has the disadvantage of not guaranteeing a stable connection between the contact bar and the internal contact. During the manipulation of the earth cable, fixed to the contact bar, in fact, the movements to which it is subjected during the installation of the coaxial cable are also transmitted to the same contact bar. This often causes the detachment of the internal contact of the contact bar, by disengagement of the protuberance of the latter from its seat on the internal contact. Said disengagement in turn causes an interruption in the electrical connection between the coaxial cable and ground cable, thus neutralizing the functionality of the device.
US 5,562,482A describes a ground connection device of coaxial cables in which the contact bar is connected to the grounding cable.
The main objective of the present invention is to provide an improved device for the ground connection of coaxial cables, which guarantees the stability of the electrical contact between the ground cable and the coaxial cable.
These and other objectives are achieved with the device and coaxial cable according to claims 1 and 7 respectively. Preferred embodiments of the device of the invention are specified in the remaining claims.
With respect to analogous devices of the known art for the ground connection of coaxial cables, that according to the present invention offers the advantage of ensuring the stability of the electrical contact between the ground cable and the coaxial cable, at the same time maintaining the necessary coupling between the contact bar and the internal contact, effected without weldings and by means of mechanical connection.
These and other objectives, advantages and characteristics appear evident from the following description of some preferred embodiments of the device and coaxial cable of the invention, illustrated, for exemplificative and non-limiting purposes, in the figures of the enclosed drawings. n these: figure 1 illustrates the device of the invention in an overall perspective view;
figure 2 illustrates a first embodiment of the device of the invention in an exploded view;
figure 3 illustrates the detail of the connection system between the contact bar and internal contact of the device of figure 2;
figure 4 illustrates a sectional view of the device of figure 2 in an assembled position;
figure 5 illustrates an exploded view of a second embodiment of the connection system between the contact bar and internal contact of the device of the invention;
figure 6 illustrates a sectional view of the details of figure 5 in an assembled position; figure 7 illustrates a third embodiment of the device of the invention in an exploded view;
figure 8 illustrates the device of figure 7 in an assembled state;
figure 9 illustrates a further variant of the device of figure 1; - figures 10 and 11 respectively illustrate an exploded and horizontal sectional view of the device of figure 9; and
- figure 12 illustrates the coaxial cable of the invention with the ground connection device of the previous figures assembled thereon.
The device of the invention for the ground connection of coaxial cables is indicated as a whole with 1 in figure 1. It comprises a metallic outer shell 2, in which a gasket 3 is housed, made of an elastomeric material, such as a synthetic rubber such as, for example, an EPDM (Ethylene-Propylene-Diene Monomer) rubber. As better illustrated in figures 2 to 4, the device 1 also comprises a contact bar 4, at whose end 5 it is crimped onto the ground cable 6. The opposite end 7 of the contact bar 4, i.e. that facing the gasket 3, is, on the other hand, suitable for being inserted in the pocket seat of the same gasket, composed of a first pass-through inlet section 8 and a second section 9, the latter closed by a bottom 10. The above-mentioned sections 8 and 9 of the pocket seat for the contact bar 4 in the gasket 3 are interrupted by the seat 11 for the internal contact 12. The connection, with the formation of the necessary electrical connection between the contact bar 4 and the internal contact 12 of figure 3, is obtained by engagement of the hook 13 of the contact bar 4 inside the slot 14 envisaged on the internal contact 12.
The hook 13 of the contact bar 4 is kept in a blocked position in the slot 14 of the internal contact 12 thanks to the elastic thrust exerted, in the direction of the arrow Fl of figure 4, by the bottom 10 of the section 9 of the pocket seat of the gasket 3 made of an elastomeric material, in response to the force insertion of the end 7 of the contact bar 4 inside the same section 9.
The internal contact 12 of the device of the invention is, in turn, kept in a stable position with respect to the contact bar 4, thanks to its housing inside the above-mentioned seat 11 envisaged in the gasket 3.
For the assembly of the device of the invention, the contact bar 4 is pushed inside the pocket seat 8,9 of the gasket 3 in the direction of the arrow F2 of figure 3, until the hook 13 is completely brought beyond the edge 15 of the slot 14 of the internal contact 12. In this position, the bottom 10 of the gasket 3 made of an elastomeric material, is elastically deformed generating, on the end 7 of the contact bar 4, an elastic thrust Fl (figure 4).
In this state, the elastomeric material of the gasket 3 also generates an upward pushing component F3 (figure 3) , which causes the hook 13 to become inserted inside the slot 14. In this way, a coupling is formed which is kept in a stable position thanks to the thrust Fl exerted by the bottom 10 of the section 9 of the pocket seat of the gasket 3 against the end 7 of the contact bar 4, which in turn causes an analogous thrust of the hook 13 against the edge 15 of the slot 14 of the internal contact 12.
In this way, the stress generated by the manipulations on the ground cable 6, which is transmitted onto the coupling between the tooth 13 and the edge 15 of the slot 14 and which operates in the direction of the opening of the same coupling, is opposed by the stress Fl, F3 generated by the elastomeric material of the gasket 3 on the contact bar 4.
In the variant of the invention illustrated in figures 5 and 6, the internal contact 12 is provided by a hook 16 suitable for being engaged, with the procedures already described with reference to the previous figures, inside a slot 17 formed on the contact bar 4.
In the version of the device of the invention illustrated in figures 7 and 8, the hook 13 of the contact bar 4 is directly engaged on the edge 18 of the internal contact 12, again thanks to the thrust exerted by the elastomeric material of which the gasket 3 is formed.
A notch, not illustrated, suitable for guiding the coupling of the hook 13 on the above-mentioned internal contact, can be advantageously envisaged on the portion of the edge 18 of the internal contact 12, which receives the engagement with the hook 13.
In the variant illustrated in figures 9 to 11, the device 19 of the invention again comprises a gasket 3 made of an. elastomeric material, " and an internal contact 12, suitably shaped so as to house the contact bar 4, no longer on a horizontal plane as in the previous figures, but on a vertical plane or rotated by 90° with respect to the previous plane. For the rest, the coupling solutions are the same as those already represented in figures 4, 6 and 8, the first of which is reproduced, according to the variant under examination, in figure 11.
The coaxial cable provided with the device of the invention is illustrated in figure 12. It consists of a primary conductor 21 and a secondary conductor 22, separated by a dielectric material 23. An outer sheath
24 is also present.
Thanks to the closing action exerted by the metallic shell 2 of the device of the invention, the gasket 3 of the latter guarantees a sealing action on the outer sheath 24. Furthermore, in correspondence with the position of the internal contact 12, the corresponding portion 25 of outer sheath 24 is removed, so as to create the necessary electrical contact between the secondary conductor 22 of the coaxial cable
20 and the internal contact 12 of the device of the invention .-
Further modifications can be applied to the device and coaxial cable of the invention, to form variants which, however, are included in the scope of the following claims, when the elastic action of the gasket is exploited for stably coupling the contact bar and the internal contact inside the earthing system.

Claims

1. A device for the ground connection of coaxial cables, of the type comprising an internal contact (12) electrically connected to the secondary conductor (22) of the coaxial cable (20), a contact bar (4) electrically connected to the above-mentioned internal contact (12) and having an end (5) to which the grounding cable (6) is fixed and an opposite end (7), a gasket (3) made of an elastomeric material provided with a seat (11) for the above-mentioned internal contact (12), a pocket seat (8,9) having a bottom (10) for said end (7) of the contact bar (4), and an outer metallic shell (2) for closing said device, characterized in that it comprises a fixing hook (13,16) of said contact bar (4) to the above-mentioned internal contact (12) through the elastic action exerted by said gasket (3) made of an elastomeric material on the end (7) of the contact bar (4) housed inside said pocket seat (8,9).
2. The device according to claim 1, characterized in that said hook (13) is formed on the contact bar (4) and is engaged with said internal contact (12) due to the thrust action exerted by said bottom (10) of the pocket seat (8,9) of the gasket (3) made of an elastomeric material, which is manifested as a reaction to the insertion of the end (7) of the contact bar (4) inside the same pocket seat (8,9).
3. The device according to claim 2, characterized in that said hook (13) is formed on the contact bar (4) and that a slot (14) is envisaged on said internal contact (12), wherein said hook (13) is engaged inside said slot (14) gripping the edge (15) of the latter due to the thrust action exerted by said bottom (10) of the pocket seat (8,9) of the gasket (3) made of an elastomeric material, which is manifested as a reaction to the insertion of the end (7) of the contact bar (4) inside the same pocket seat (8,9).
4. The device according to claim 1, characterized in that said hook (16) is formed on the internal contact
(12) and that a slot (17) is envisaged on the contact bar (4), wherein said hook (16) is engaged inside said slot (17) due to the thrust action exerted by the bottom (10) of the pocket seat (8,9) of the gasket (3) made of an elastomeric material, in response to the insertion of the end (7) of the contact bar (4) inside the same pocket seat (8,9).
5. The device according to claim 2, characterized in that said hook (13) of the contact bar (4) is directly engaged on the edge (18) of the internal contact (12).
6. The device according to claim 1, characterized in that said gasket (3) is a gasket made of synthetic rubber, in particular EPDM.
7. A coaxial cable, of the type provided with an outer sheath (24) and a primary conductor (21) and a secondary conductor (22) separated by a dielectric material (23) , characterized in that it is provided with the device according to one or more of the previous claims.
PCT/EP2016/000457 2015-03-19 2016-03-11 Improved device for the ground connection of coaxial cables WO2016146253A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP16710096.5A EP3111514B1 (en) 2015-03-19 2016-03-11 Improved device for the ground connection of coaxial cables
PL16710096T PL3111514T3 (en) 2015-03-19 2016-03-11 Improved device for the ground connection of coaxial cables

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI20150416 2015-03-19
ITMI2015A000416 2015-03-19

Publications (1)

Publication Number Publication Date
WO2016146253A1 true WO2016146253A1 (en) 2016-09-22

Family

ID=53284349

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/000457 WO2016146253A1 (en) 2015-03-19 2016-03-11 Improved device for the ground connection of coaxial cables

Country Status (3)

Country Link
EP (1) EP3111514B1 (en)
PL (1) PL3111514T3 (en)
WO (1) WO2016146253A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110718771A (en) * 2019-08-30 2020-01-21 中航光电科技股份有限公司 Structure capable of facilitating welding and power connector outer shell adopting structure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5562482A (en) * 1995-01-03 1996-10-08 Wright; John O. Coaxial cable connector and method of assembling
GB2353644A (en) * 1999-08-26 2001-02-28 Yazaki Corp Connection structure for shielded cable
WO2013039124A1 (en) * 2011-09-12 2013-03-21 Yazaki Corporation Structure of connection between coaxial cable and shield terminal, and method of connection therebetween

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5562482A (en) * 1995-01-03 1996-10-08 Wright; John O. Coaxial cable connector and method of assembling
GB2353644A (en) * 1999-08-26 2001-02-28 Yazaki Corp Connection structure for shielded cable
WO2013039124A1 (en) * 2011-09-12 2013-03-21 Yazaki Corporation Structure of connection between coaxial cable and shield terminal, and method of connection therebetween

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110718771A (en) * 2019-08-30 2020-01-21 中航光电科技股份有限公司 Structure capable of facilitating welding and power connector outer shell adopting structure

Also Published As

Publication number Publication date
PL3111514T3 (en) 2018-02-28
EP3111514A1 (en) 2017-01-04
EP3111514B1 (en) 2017-12-06

Similar Documents

Publication Publication Date Title
US7651376B2 (en) Contact element for shielded connectors
US7632148B1 (en) Sealed and grounded electrical connector and sealed and grounded electrical connector assembly
JP6517615B2 (en) Electrical connector
KR20130127457A (en) Electrical connector with grounding member
US9865970B2 (en) Connector and manufacturing method of connector
US7959475B2 (en) Cable-arraying for connectors
US20190013626A1 (en) Shielded plug connection assembly
EP3200287A1 (en) Connector
US10103496B2 (en) Electric connector with shield contact
KR20190037311A (en) Shielding metal plate
KR20220003004A (en) Plug Connectors and Plug Connector Assemblies
TW201902037A (en) Electrical connector and electrical connector device
EP3171460B1 (en) Electrical connector assembly
US20190372328A1 (en) Cable bushing having shielding and sealing properties
EP3111514B1 (en) Improved device for the ground connection of coaxial cables
JP2017212129A (en) Waterproof connector
CN111357154A (en) Connecting device and method for connecting conductors, in particular shielding conductors, to an electronics housing
US10686270B2 (en) Modular plug with metal shielding cover and communication cable
KR101407933B1 (en) Shielded connector
EP3113293A1 (en) Peripheral wedge seal member
CN104682090B (en) Electrical connector with wire retention tube
RU2764584C1 (en) Modular plug connector system
JP2022157987A (en) cable connector
KR101723049B1 (en) High voltage connector
KR20180120566A (en) Electric connector and electric connector device

Legal Events

Date Code Title Description
REEP Request for entry into the european phase

Ref document number: 2016710096

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2016710096

Country of ref document: EP

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16710096

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE