Sheilded cable assembly and electromagnetic shield terminal assembly for same

Patent metadata

Field	Value
Publication number	US-10741975-B2
Application number	US-201916567384-A
Country	US
Kind code	B2
Filing date	Sep 11, 2019
Priority date	Oct 19, 2018
Publication date	Aug 11, 2020
Grant date	Aug 11, 2020

Abstract

An electromagnetic shield terminal assembly configured for attachment to a shielded cable includes a tubular inner ferrule having a flared attachment end configured to be disposed intermediate the shield conductor and the inner insulation layer of the cable and a crimped outer ferrule formed of sheet metal having a cable attachment portion that defines a pair of bypass crimp wings and a pair of insulation crimp wings. Each insulation crimp wing defines a prong having a pointed end that penetrates the outer insulation layer of the cable. The flared attachment end of the inner ferrule is located intermediate the bypass crimp wings and the insulation crimp wings when the outer ferrule is crimped to the shielded cable.

First claim

We claim:

1. A shielded cable assembly, comprising:
a shielded cable having a central conductor axially surrounded by an inner insulation layer, a shield conductor axially surrounding the inner insulation layer and an outer insulation layer axially surrounding the shield conductor;
a tubular inner ferrule having a flared attachment end disposed intermediate the shield conductor and the inner insulation layer; and
a crimped outer ferrule formed of sheet metal having a cable attachment portion that defines a pair of bypass crimp wings surrounding and in electrical contact with the shield conductor and having a pair of insulation crimp wings attached to an end of the outer insulation layer, wherein each insulation crimp wing defines a plurality of prongs having pointed ends that penetrate the outer insulation layer and wherein the flared attachment end of the inner ferrule is located intermediate the bypass crimp wings and the insulation crimp wings.

2. The shielded cable assembly according to claim 1 , further comprising a tubular shield contact electrically connected to a connection end of the inner ferrule located opposite the flared attachment end.

3. The shielded cable assembly according to claim 1 , wherein each of the insulation crimp wings defines an upper prong on a free end of the insulation crimp wing and a lower prong located nearer a base of the insulation crimp wing than the upper prong.

4. The shielded cable assembly according to claim 1 , wherein each of the insulation crimp wings defines an upper prong on a free end of the insulation crimp wing and an embossed rib extending laterally across the insulation crimp wings.

5. The shielded cable assembly according to claim 1 , wherein the cable attachment portion defines a first projection contacting and indenting the shield conductor, wherein the first projection is characterized as having a hemispherical shape.

6. The shielded cable assembly according to claim 5 , wherein each bypass crimp wing defines a second projection contacting and indenting the shield conductor, wherein the second projection is positioned opposite the first projection, wherein the second projection is characterized as having a hemispherical shape.

7. The shielded cable assembly according to claim 1 , wherein the inner ferrule has a seam extending longitudinally along an entire length of the inner ferrule that follows a tortuous path.

8. An electromagnetic shield terminal assembly configured for attachment to a shielded cable having a central conductor axially surrounded by an inner insulation layer, a shield conductor axially surrounding the inner insulation layer and an outer insulation layer axially surrounding the shield conductor, the electromagnetic shield terminal assembly comprising:
a tubular inner ferrule having a flared attachment end configured to be disposed intermediate the shield conductor and the inner insulation layer; and
a crimped outer ferrule formed of sheet metal having a cable attachment portion that defines a pair of bypass crimp wings configured to surround and be in electrical contact with the shield conductor and having a pair of insulation crimp wings configured to be attached to an end of the outer insulation layer, wherein each insulation crimp wing defines a plurality of prongs having pointed ends that are configured to penetrate the outer insulation layer and wherein the flared attachment end of the inner ferrule is configured to be located intermediate the bypass crimp wings and the insulation crimp wings when the outer ferrule is crimped to the shielded cable.

9. The electromagnetic shield terminal assembly according to claim 8 , further comprising a tubular shield contact electrically connected to a connection end of the inner ferrule located opposite the flared attachment end.

10. The electromagnetic shield terminal assembly according to claim 8 , wherein each of the insulation crimp wings defines an upper prong on a free end of the insulation crimp wing and a lower prong located nearer a base of the insulation crimp wing than the upper prong.

11. The electromagnetic shield terminal assembly according to claim 8 , wherein the cable attachment portion defines a first projection configured to contact and indent the shield conductor, wherein the first projection is characterized as having a hemispherical shape.

12. The electromagnetic shield terminal assembly according to claim 11 , wherein each bypass crimp wing defines a second projection configured to contact and indent the shield conductor, wherein the second projection is characterized as having a hemispherical shape, wherein the second projection is positioned opposite the first projection.

13. The electromagnetic shield terminal assembly according to claim 8 , wherein the inner ferrule has a seam extending longitudinally along an entire length of the inner ferrule that follows a tortuous path.

14. A shielded cable assembly, comprising:
a shielded cable having a central conductor axially surrounded by an inner insulation layer, a shield conductor axially surrounding the inner insulation layer and an outer insulation layer axially surrounding the shield conductor;
a tubular inner ferrule having an attachment end disposed intermediate the shield conductor and the inner insulation layer and a connection end located opposite the attachment end;
a tubular shield contact electrically having a receiving end in which the connection end is disposed and a shield end located opposite the receiving end, said shield contact defining a first plurality of indentations in the receiving end and a second plurality of indentations in the shield end, wherein the connection end is in contact with the first plurality of indentations; and
a tubular terminal insulator disposed within the connection end and the receiving end, wherein the terminal insulator is in contact with the second plurality of indentations.

15. The shielded cable assembly according to claim 14 , wherein the connection end defines a longitudinal slot and the terminal insulator defines a longitudinal orientation rib and wherein the orientation rib is disposed within the slot.

16. The shielded cable assembly according to claim 14 , wherein the connection end has a larger diameter than the attachment end and the inner ferrule defines a ferrule transition segment between the connection end and the attachment end and wherein the terminal insulator defines a plurality of crush ribs that are in contact with and deformed by the ferrule transition segment.

17. The shielded cable assembly according to claim 14 , wherein the inner ferrule has a ferrule seam extending longitudinally along an entire length of the inner ferrule and the shield contact has a contact seam extending longitudinally along an entire length of the shield contact and wherein the ferrule seam and the contact seam are radially offset from one another.

18. The shielded cable assembly according to claim 17 , wherein the ferrule seam and the contact seam are radially offset from one another by 180 degrees.

19. An electromagnetic shield terminal assembly configured for attachment to a shielded cable having a central conductor axially surrounded by an inner insulation layer, a shield conductor axially surrounding the inner insulation layer and an outer insulation layer axially surrounding the shield conductor, the electromagnetic shield terminal assembly comprising:
a tubular inner ferrule having an attachment end configured to be disposed intermediate the shield conductor and the inner insulation layer and a connection end l

Assignees

• Aptiv Tech Ltd

Inventors

• Jones Leslie L
• Liptak Nicole L
• Messuri Michael D
• Bilas Jared
• Demonica Michael J
• Margrave Christopher A
• Messuri Dominic A
• Schuster James P

Classifications

• H01B9/02 Primary

  with screens or conductive layers, e.g. for avoiding large potential gradients · CPC title

• H01R9/053 Primary

  using contact members penetrating insulation · CPC title

• H01R13/5808

  formed by a metallic element crimped around the cable (H01R4/185 takes precedence) · CPC title

• H01R4/188

  having an uneven wire-receiving surface to improve the contact · CPC title

• H01R9/0518 Primary

  Connection to outer conductor by crimping or by crimping ferrule · CPC title