GB2041794A - Improvements in or relating to ferrules - Google Patents
Improvements in or relating to ferrules Download PDFInfo
- Publication number
- GB2041794A GB2041794A GB7905905A GB7905905A GB2041794A GB 2041794 A GB2041794 A GB 2041794A GB 7905905 A GB7905905 A GB 7905905A GB 7905905 A GB7905905 A GB 7905905A GB 2041794 A GB2041794 A GB 2041794A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strip
- ferrule
- elongate
- fingers
- conductor
- 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- Withdrawn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
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
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
- H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
- H01R4/183—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
- H01R4/184—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion
Landscapes
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Abstract
A ferrule for securing to a stripped end portion of a stranded conductor is cut from an elongate metal strip 1 of metal or metal alloy which has a multiplicity of longitudinally spaced fingers 3 projecting laterally from each of its side edges. The fingers 3 along each side edge of the strip 1 are of such a shape and size and are so staggered with respect to the fingers along the other side edge of the strip that, when the strip is transversely cut to form a ferrule and the ferrule is applied to and folded and compressed around an elongate conductor, the fingers of the ferrule will interdigitate and the ferrule grip the conductor. <IMAGE>
Description
SPECIFICATION
Improvements in or relating to ferrules.
This invention relates to ferrules suitable for use in terminating or joining elongate electrical conductors and is especially, but not exclusively, concerned with ferrules for securing together the strands at an end portion of a stranded electric
Conductor in order to facilitate insertion of said end portion in a bore or tunnel in an electric terminal or connector.
According to the present invention we provide, for use in the manufacture of ferrules, an elongate strip of metal or metal alloy which has a multiplicity of longitudinally spaced fingers projecting laterally from each of its longitudinally extending side edges, the fingers along each side edge of the strip being of such a shape and size and being so staggered with respect to the fingers along the other side edge of the strip that, when the strip is transversely cut to form a ferrule and the ferrule is applied to and folded and compressed around an elongate conductor, the fingers of the ferrule will interdigitate and the ferrule grip the conductor.
Preferably, all the fingers are substantially the same shape and size as one another and preferably, also, all the gaps between adjacent longitudinally spaced fingers are substantially the same shape and size as the fingers.
The laterally extending side edges of each finger preferably lie substantially normal to the longitudinal axis of the strip and are preferably of substantially the same length as one another. The lateral dimension of each finger preferably lies in the range 0.25 W to 0.35 W, where W is the overall width of the strip.
Where, as is preferred, the fingers and the gaps between the fingers have substantially the same longitudinal dimensions as one another, by transversely cutting the strip along two opposed laterally extending side edges of fingers lying on opposite side edges of the strip, a ferrule can be obtained of any desired length nl, where I is the longitudinal dimension of each finger and gap and n is the total number of fingers and gaps along one side edge of the ferrule. Preferably I lies in the range 0.15 Wto 0.25 W. Thus, a ferrule can be cut from the strip to any desired length.
For ease of manufacture and for ease of application of a ferrule to an elongate conductor, preferably the strip is made of brass or of copper or a copper-based alloy. Preferably, the strip is sufficiently flexible for the strip to be coiled on a reel.
The invention also includes a ferrule when transversely cut from the elongate strip as hereinbefore described.
The invention further includes a method of applying a ferrule to an end portion of an elongate electric conductor, which method comprises feeding an elongate strip as hereinbefore described in the direction of its length, stopping travel of the strip and placing an end portion of an elongate conductor over a predetermined length of the central portion of the strip, and simultaneously transversely cutting said strip to said predetermined length, or to a length greater than said predetermined length, and transversely folding and compressing the ferrule so formed around said end portion of the conductor in such a way that the fingers of the ferrule interdigitate and the ferrule grips said end portion of the conductor.
When the ferrule is compressed around the end portion of the conductor, the materiai of the ferrule is squeezed in a longitudinal direction to cause the interdigitating fingers to lock together.
Where the strip is transversely cut to a length greater than said predetermined length, the ferrule can be used in jointing two elongate electrical conductors by placing an end portion of a second conductor over the central portion of that part of the length of the ferrule that has not been transversely folded and compressed around the end portion of the first conductor, and transversely folding and compressing said part of the ferrule around said end portion of the second conductor in such a way that the fingers of said part interdigitate and the ferrule grips said end portions of the second conductor.
The overall width of the strip having regard to the diameter of the end portion of the elongate conductor may be such that the folded fingers of the ferrule only partially interdigitate or may be such that the folded fingers partially overlie the central portion of the ferrule. Consequently, the elongate strip may be employed for securing ferrules to conductors having any diameter within a limited range of diameters. The ferrule can therefore be used to joint two conductors whose diameters are different from one another but lie within said limited range of diameters.
The invention is further illustrated by a description, by way of example, of a preferred elongate metal strip with reference to the accompanying drawing, in which: - Figure 1 is a fragmental isometric view of the strip, and
Figure 2 is an isometric view of a ferrule transversely cut from the strip and folded round an end portion of a stranded conductor.
The strip 1 shown in Figure 1 is made of brass and has a centralportion 2 and fingers 3 projecting laterally from its longitudinally extending side edges, the fingers along one side edge being staggered with respect to the fingers along the other side edge. The fingers 3 are rectangular in shape and adjacent fingers define gaps 4 of a similar shape and size.
The ferrule 5 shown in Figure 2 has been transversely cut from the strip 1 shown in Figure 1 in such a way that one side edge of the ferrule has two longitudinally spaced fingers 3 and the other side edge of the ferrule has a single finger 3
centrally disposed between its ends. The ferrule 5
has been folded transversely and compressed
around an end portion 6 of a stranded conductor
so that the fingers 3 interdigitate and the ferrule
grips said end portion to secure together the wires
7. The end portion 6 of the stranded conductor with the ferrule 5 secured therearound can now be readily inserted in the bore or tunnel of an electric terminal or connector.
Claims (12)
1. For use in the manufacture of ferrules, an elongate strip of metal or metal alloy which has a multiplicity of longitudinally spaced fingers projecting laterally from each of its longitudinally extending side edges, the fingers along each edge of the strip being of such a shape and size and being so staggered with respect to the fingers along the other side edge of the strip that, when the strip is transversely cut to form a ferrule and the ferrule is applied to and folded and compressed around an elongate conductor, the fingers of the ferrule will interdigitate and the ferrule grip the conductor.
2. For use in the manufacture of ferrules, an elongate strip of metal or metal alloy which has a multiplicity of longitudinally spaced fingers projecting laterally from each of its longitudinally extending side edges, the fingers along each side of the strip being staggered with respect to the fingers along the other side of the strip and all the fingers and the gaps between the fingers being of substantially the same shape and size as one another so that, when the strip is transversely cut to form a ferrule and the ferrule is applied to and folded and compressed around an elongate conductor, the fingers of the ferrule will interdigitate and the ferrule grip the conductor.
3. An elongate strip as claimed in Claim 1 or 2, wherein the laterally extending side edges of each finger lie substantially normal to the longitudinal axis of the strip.
4. An elongate strip as claimed in Claim 3, wherein the laterally extending side edges of each finger are of substantially the same length as one another.
5. An elongate strip as claimed in Claim 4, wherein the lateral dimension of each finger lies in the range 0.25 W to 0.35 W, where W is the overall width of the strip.
6. An elongate strip as claimed in any one of the preceding Claims, wherein the strip is sufficiently flexible for the strip to be coiled on a reel.
7. An elongate strip as claimed in any one of the preceding Claims, wherein the strip is made of brass or of copper or a copper-based alloy.
8. For use in terminating or jointing elongate electric conductors, a ferrule formed by transversely cutting an elongate strip as claimed in any one of the preceding Claims.
9. A method of applying a ferrule to an end portion of an elongate electric conductor, which method comprises feeding an elongate strip as hereinbefore described in the direction of its length, stopping travel of the strip and placing an end portion of an elongate conductor over a predetermined length of the central portion of the strip, and simultaneously transversely cutting said strip to said predetermined length, or to a length greater than said predetermined length, and transversely folding and compressing the ferrule so formed, around said end portion of the conductor in such a way that the fingers of the ferrule interdigitate and the ferrule grips said end portion of the conductor.
10. A method as claimed in Claim 9 in which the strip is transversely cut to a length greater than said predetermined length, wherein an end portion of a second elongate electric conductor is placed over the central portion of that part of the length of the ferrule that has not been transversely folded and compressed around the end portion of the first conductor, and said part of the ferrule is transversely folded and compressed around said end portion of the second conductor in such a way that the fingers of said part interdigitate and the ferrule grips said end portion of the second conductor, thereby jointing the two conductors.
11. For use in the manufacture of ferrules, and elongate strip substantially as hereinbefore described with reference to and as shown in
Figure 1 of the accompanying drawing.
12. For use in terminating or jointing elongate electric conductors, a ferrule substantially as hereinbefore described with reference to and as shown in,Figure 2 of the accompanying drawing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7905905A GB2041794A (en) | 1979-02-20 | 1979-02-20 | Improvements in or relating to ferrules |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7905905A GB2041794A (en) | 1979-02-20 | 1979-02-20 | Improvements in or relating to ferrules |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2041794A true GB2041794A (en) | 1980-09-17 |
Family
ID=10503294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7905905A Withdrawn GB2041794A (en) | 1979-02-20 | 1979-02-20 | Improvements in or relating to ferrules |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2041794A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0070639A1 (en) * | 1981-07-20 | 1983-01-26 | General Motors Corporation | Electrical crimp connection with anaerobic setting sealant |
| EP0178092A2 (en) * | 1984-10-09 | 1986-04-16 | General Motors Corporation | Electrical connector |
| GB2173357A (en) * | 1985-04-04 | 1986-10-08 | Nixdorf Computer Ag | Crimp connector electrically connecting cable screen to terminal |
| EP0619623A1 (en) * | 1993-04-05 | 1994-10-12 | Ford Motor Company Limited | Crimped wire terminal |
| JP2013073877A (en) * | 2011-09-29 | 2013-04-22 | Yazaki Corp | Terminal and cable connection method of terminal |
| CN108673467A (en) * | 2018-06-08 | 2018-10-19 | 山东鲁能智能技术有限公司 | Substation's live-line maintenance operation robot system and method |
| CN108714883A (en) * | 2018-06-08 | 2018-10-30 | 山东鲁能智能技术有限公司 | A kind of substation's hotline maintenance AUTONOMOUS TASK robot platform |
| CN108748073A (en) * | 2018-06-08 | 2018-11-06 | 山东鲁能智能技术有限公司 | Substation equipment live-line maintenance operation robot |
| CN108767736A (en) * | 2018-06-08 | 2018-11-06 | 山东鲁能智能技术有限公司 | Substation's livewire work conducting wire mending system and method |
| EP3588679A1 (en) * | 2018-06-29 | 2020-01-01 | TE Connectivity Germany GmbH | Crimp and method for producing a crimp |
-
1979
- 1979-02-20 GB GB7905905A patent/GB2041794A/en not_active Withdrawn
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0070639A1 (en) * | 1981-07-20 | 1983-01-26 | General Motors Corporation | Electrical crimp connection with anaerobic setting sealant |
| EP0178092A2 (en) * | 1984-10-09 | 1986-04-16 | General Motors Corporation | Electrical connector |
| EP0178092A3 (en) * | 1984-10-09 | 1987-07-22 | General Motors Corporation | Electrical connector |
| GB2173357A (en) * | 1985-04-04 | 1986-10-08 | Nixdorf Computer Ag | Crimp connector electrically connecting cable screen to terminal |
| EP0619623A1 (en) * | 1993-04-05 | 1994-10-12 | Ford Motor Company Limited | Crimped wire terminal |
| US5425662A (en) * | 1993-04-05 | 1995-06-20 | Ford Motor Company | Crimped wire terminal with mechanical locking |
| JP2013073877A (en) * | 2011-09-29 | 2013-04-22 | Yazaki Corp | Terminal and cable connection method of terminal |
| CN108714883A (en) * | 2018-06-08 | 2018-10-30 | 山东鲁能智能技术有限公司 | A kind of substation's hotline maintenance AUTONOMOUS TASK robot platform |
| CN108673467A (en) * | 2018-06-08 | 2018-10-19 | 山东鲁能智能技术有限公司 | Substation's live-line maintenance operation robot system and method |
| CN108748073A (en) * | 2018-06-08 | 2018-11-06 | 山东鲁能智能技术有限公司 | Substation equipment live-line maintenance operation robot |
| CN108767736A (en) * | 2018-06-08 | 2018-11-06 | 山东鲁能智能技术有限公司 | Substation's livewire work conducting wire mending system and method |
| CN108767736B (en) * | 2018-06-08 | 2020-07-03 | 国网智能科技股份有限公司 | Transformer substation live-line work wire repairing system and method |
| CN108748073B (en) * | 2018-06-08 | 2020-09-25 | 国网智能科技股份有限公司 | Live overhaul operation robot for substation equipment |
| CN108714883B (en) * | 2018-06-08 | 2021-03-16 | 国网智能科技股份有限公司 | Transformer substation live overhaul autonomous operation robot platform |
| EP3588679A1 (en) * | 2018-06-29 | 2020-01-01 | TE Connectivity Germany GmbH | Crimp and method for producing a crimp |
| WO2020002225A1 (en) * | 2018-06-29 | 2020-01-02 | Te Connectivity India Private Limited | Crimp and method for producing a crimp |
| WO2020002222A1 (en) * | 2018-06-29 | 2020-01-02 | Te Connectivity India Private Limited | Seam self locking crimp |
| JP2021528823A (en) * | 2018-06-29 | 2021-10-21 | ティーイー コネクティビティ インディア プライベート リミテッドＴｅ Ｃｏｎｎｅｃｔｉｖｉｔｙ Ｉｎｄｉａ Ｐｒｉｖａｔｅ Ｌｉｍｉｔｅｄ | Seam self-locking crimp |
| US11831116B2 (en) | 2018-06-29 | 2023-11-28 | Te Connectivity Germany Gmbh | Seam self locking crimp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |