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
  • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
  • H01R13/5804—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable comprising a separate cable clamping part
• • 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
  • H01R13/46—Bases; Cases
  • H01R13/516—Means for holding or embracing insulating body, e.g. casing, hoods
• • 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
  • H01R13/6592—Specific features or arrangements of connection of shield to conductive members the conductive member being a shielded cable
• • 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
  • H01R13/66—Structural association with built-in electrical component
  • H01R13/6608—Structural association with built-in electrical component with built-in single component

Definitions

• the present invention relates to the field of electrical connections with electromagnetic protection. More specifically, the present invention relates to a connection between an overshielded harness and an electrical component, in particular a connector with integrated fitting, as well as to a method for connecting an over-shielded harness to an electrical component, in particular a connector with integrated fitting. State of the prior art
• electrical connections are made primarily through electrical harnesses.
• These electrical harnesses typically include an overshield surrounding the strand of cables for electromagnetic (EM) protection, in particular to attenuate EM disturbances received or emitted by the harness.
• EM electromagnetic
• a rear connection (or "backshells" in English) is often used.
• the rear connector allows the electrical connection of the harness to the connector while keeping the EM protection around the connection. More precisely, the rear connector is a piece of metal, of tubular shape generally flared towards the front.
• the harness cables intended to be plugged into the connector pass inside the rear connector via a passage towards the rear, while the overshield of the harness is attached around a connection pad surrounding the passage. Once the cables are plugged in, the rear fitting is connected forward to the connector.
• Various forms of rear connection exist allowing over-shielded harnesses of different diameters to be connected reliably to connectors, even those of small diameter.
• a connector with integrated fitting is sometimes preferred because it is lighter. In addition, it is also less complicated to install because it includes one less component, effectively integrating the functions of the connector and the rear fitting in one. one piece.
• a small diameter harness cannot be properly connected to such a connector.
• the passage at the rear of the connector with integrated fitting should be wide enough to allow the insertion as well as the plugging of the cables to the connector part of the connector with integrated fitting, and therefore the range of the connector with integrated fitting should not cannot be reduced beyond a certain diameter. Therefore, it is difficult to reattach the overshield of a small diameter harness around this range.
• the overshield of the small diameter harness is often found reattached so as to only partially surround the pad of the integrated fitting connector, or not reattached at all.
• the shielding is forced to surround the range, which distorts the harness's shielding mesh and leaves windows through which EM disturbances can be received or transmitted. In any case, EM protection represents a significant regression and is not satisfactory.
• the object of the present invention is therefore to overcome the aforementioned needs and drawbacks by proposing an enlarged over-armor harness comprising an over-armored harness, an undeformable ferrule and an over-armor section which is distinct and has a larger diameter than the over-armor of the harness, the non-deformable ferrule being arranged around the harness with the over-armor of the harness passing inside the non-deformable ferrule and folded over the outside of the non-deformable ferrule, a first end of the over-armor section being attached around the folded part of the overshield of the harness and a second end being arranged for the attachment to a pad of an electrical component.
• the first end of the overshield section is attached with a clamp.
• a first heat-shrinkable sheath surrounds the first end of the shielding section.
• the object of the present invention also proposes a connection, comprising an electrical component with a pad and an enlarged over-shielding harness as described above, the second end of the over-shielding section being attached around the area of the electrical component.
• the second end of the shielding section is attached with a clamp.
• the electrical component is a connector with integrated fitting.
• a second heat-shrinkable sheath surrounds the first end of the over-armor section as well as part of the first heat-shrinkable sheath, and furthermore covers the second end of the over-armor section.
• the object of the present invention also provides a method for connecting the over-armor of an over-armored harness to a pad of an electrical component, the method comprising providing a non-deformable ferrule around the over-armored harness, the folding of the over-armor of the harness. from the inside of the strain-resistant ferrule to the outside of the strain-resistant ferrule, providing an over-armor section which is distinct and has a larger diameter than the over-armor of the harness, attaching one end of the over-armor section around the folded-in part of the overshield of the harness, and reattaching the second end of the over-armor section to the area of the electrical component.
• the method comprises attaching each of the ends of the overshield section with a clamp.
• the method comprises attaching the overshield of the harness to the pad of a connector with integrated fitting.
• FIG. 1 shows a cross-sectional view of a connection between a connector with integrated fitting and a harness
• FIG. 2 shows various stages of making the connection of FIG. 1.
• FIG. 1 shows a connection 100 between a connector with integrated fitting 50 and a shielded harness 10 according to a preferred embodiment of the invention.
• Figure 2 shows the same connection 100 at various stages of assembly to facilitate understanding of the invention.
• the harness 10 is of a known type and comprises cables 15 which are grouped together in a strand, the latter being surrounded by an overshield 20 (of the braided type) to protect it from electromagnetic interference (EM).
• the harness 10 also includes individual shielded cables.
• the cables 15 and the harness 10 include layers of insulation. To connect this harness with an integrated fitting connector, it must be prepared.
• the harness 10 is stripped and shielded towards one end, which consists in locally removing the outer insulation 12 and the overshielding 20 of the harness 10. Then, the shielded cables 15 of the harness are stripped at an even closer location. towards the end in order to then expose the conductive part of the cables 15.
• the shielded cables 15 can also be unshielded, but keeping their terminations of the shields 16 attached to the harness 10.
• the integrated connector 50 is substantially cylindrical in shape with a sleeve 54 towards the rear of metal comprising a passage 53 giving access to its interior where the cables 15 of the shielded harness 10 can be plugged into the integrated connector 50.
• outside of the sleeve has an external connection area 55.
• This area 55 is intended for the attachment of the overshield 20 of the overshielded harness 10 as well as for the resumption of the shielding terminations 16 of the individual cables 15, if necessary.
• the integrated fitting connector 50 is lighter and less complicated to install.
• cables 15 of the harness 10 are received in the passage 53 of the integrated connector 50.
• the conductive parts of the cables 15 are plugged into the integrated connector 50 to electrically connect the cables 15 and the integrated connector 50.
• the harness 10 is small compared to this integrated connector 50.
• the diameter of its overshield 20 is too small to surround the pad 55 of the integrated connector 50 which has a larger diameter.
• the shield 20 is made of metal, and cannot extend sufficiently, neither materially nor structurally, to accommodate the diameter of the pad 55.
• the diameter of the pad 55 may be between 12 and 15mm, while that of the overshield 20 can be between 5 and 6mm.
• the overshield of the harness is widened.
• This over-shielded harness with its enlarged over-shielding referred to as the “enlarged over-shielding harness” makes it possible to connect to the connector with integrated fitting 50.
• the enlarged over-armor harness 30 comprises a dimensionally stable ferrule 46.
• the dimensionally stable ferrule 46 is in the form of a short circular tube. It is of a size which allows its installation around the over-armor harness 10, being slightly larger than the diameter of the over-armor 20 of the harness 10. It is installed at a position just behind the end of the over-armor 20 of the harness 10.
• the over-armor 20, however, which now passes inside the rigid ferrule 46, is folded over the outside of the rigid ferrule 46 to form a folded-over portion 22, its end ending behind the rigid ferrule 46 as shown.
• An over-armor section 40 is provided to adapt the over-armor 20 of the over-armor harness 10 to the range 55. It is separate and does not form an integral part of the over-armor 20 of the over-armored harness 10.
• the over-armor segment 40 has a larger diameter than the armor. shielding 20 of the harness 10. In particular, it is wide enough to surround the shielding 20 of the harness 10 folded over the non-deformable ferrule 46. At the same time, the other end of the shielding section 41 is capable of surrounding the pad 55 of the connector with integrated fitting 50, without being deformed.
• the armor section 40 is typically straight. Alternatively, it can be made in a flared manner, which can facilitate adaptation to the smallest diameter of the harness 10, and the largest diameter of the integrated connector 50. Moreover, its mesh and its material can be identical to those of the overshield 20 of the harness 10 in order to ensure good electrical continuity and good EM protection. Nevertheless, it is understood that even these can also be different according to the needs.
• a first end 41 of the armor section 40 is positioned around the folded part 22 on the ferrule. It is attached to it with a clamp 48.
• the non-deformable ferrule 46 is important. It prevents the over-armor 20 of the harness 10 from being crushed due to the tightening of the clamp 48. As the over-armor 20 is not deformed, the mesh is respected, and uniform protection guaranteed around the over-armored harness 10. By elsewhere, it allows the clamp 48 to tighten the shielding section 40 against the folded portion 22 of the shielding 20 thus ensuring a reliable electrical connection between the two.
• it is made of metal, for example copper.
• the second end 42 of the shielding section 40 is positioned around the connection pad 55 of the integrated connector 50. It is attached to it with another clamp 58.
• the shielding terminations 16 of the shielded cables 15 are also repeated on the same area 55, inside the second end 42 of the shielding section 40.
• the two clamps 48, 58 on the connection 100 can be of the same size, or of different sizes. . Preferably, they are made of metal.
• the shielded harness 10 as well as the integrated connector 50 are known parts. Furthermore, the non-deformable ferrule 46, the over-armor section 40 and the clamps 48, 58 are also readily available standard parts.
• the shielded harness 10 may also include a self-weld sleeve 17 bonded to the shield of a cable 15.
• the self-weld sleeve may also include a shield termination 18 which may also be terminated at pad 55, such as terminations of the shields 16 of cables 15, inside the section of overshield 40.
• the self-welding sleeve 17 can advantageously be linked to the wiring behind the connection 100.
• a first heat-shrinkable sheath 35 is provided around the harness 10, in particular enveloping the first end 41 of the shielding section 40.
• a second sheath 36 is provided enveloping the first end 41 of the armor section. overshield 40 as well as part of the first heat-shrinkable sleeve 35 above.
• This second heat-shrinkable sleeve 36 extends beyond the second end 41 of the shielding section 40, and is engaged with a shoulder 56 on the integrated connector 50. It therefore envelops all the conductive parts of the connection 100.
• the heat-shrinkable sleeves 35, 36 protect the connection 100 from the percolation of water, and from impacts. Moreover, they hide the parts of the connection 100 well and make them cleaner.
• the electrical connection 100 when complete is about the same size as that using a rear fitting and connector put together. It therefore has no impact on the routing of cables / harnesses in its vicinity.
• the shielded harness 10 is first prepared, unshielded and stripped as necessary.
• a non-deformable ferrule 46 is placed around the over-armored harness 10. Then, the over-armor 20 of the harness 10 is folded over the outside of the non-deformable ferrule 46.
• An over-armor section 40 which is separate and has a larger diameter than the over-armor of the harness 20, is placed with a first end 41 around the folded part 22 of the over-armor 20 of the harness 10. The over-armor section 40 is then there. attached with a hose clamp 48. The overshield 20 of the harness 10 is now enlarged, effectively forming an enlarged overshield harness 30. The second end 42 of the overshield section 40 is put around the pad 55 of the integrated fitting connector, and is then attached to it with another clamp 58.
• the shielding section 40 extends from the shielding 20 of the harness 10 to the pad 55 of the integrated fitting connector 50, and maintains good EM protection which is uniform and continuous around the connection 100.
• the protection provided by the over-shielding section 40 around the cables 15 is at least that provided by the over-shielding 20 of the over-shielded harness 10.
• the connection 100 between the over-shielded harness 10 and the integrated connector 50 weighs less than one connection comprising a rear fitting and a connector put together.
• the invention has been explained in relation to a connector with integrated fitting, it is however understood that the invention can be applied to other components, such as a standard rear fitting, and even those having a range which does not is not too wide for the harness.
• the invention can be used with various over-armored harnesses, whether of the braided type or otherwise.
• the invention can also be easily retrofitted to already existing connections in an aircraft.
• the invention is not limited to aircraft, and can be used in ships, buildings, etc.

Landscapes

• Details Of Connecting Devices For Male And Female Coupling (AREA)
• Connector Housings Or Holding Contact Members (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=67742654

Family Applications (1)

Country Status (6)

Family Cites Families (10)

• 2019
  • 2019-04-05 FR FR1903680A patent/FR3094844B1/fr active Active
• 2020
  • 2020-03-25 WO PCT/EP2020/058401 patent/WO2020200970A1/fr unknown
  • 2020-03-25 PL PL20712388.6T patent/PL3949028T3/pl unknown
  • 2020-03-25 CA CA3135078A patent/CA3135078A1/fr active Pending
  • 2020-03-25 US US17/600,638 patent/US11817650B2/en active Active
  • 2020-03-25 EP EP20712388.6A patent/EP3949028B1/de active Active

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