EP0645857A1 - Connecteur pour raccordement électrique - Google Patents
Connecteur pour raccordement électrique Download PDFInfo
- Publication number
- EP0645857A1 EP0645857A1 EP94114721A EP94114721A EP0645857A1 EP 0645857 A1 EP0645857 A1 EP 0645857A1 EP 94114721 A EP94114721 A EP 94114721A EP 94114721 A EP94114721 A EP 94114721A EP 0645857 A1 EP0645857 A1 EP 0645857A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tabs
- connector
- wings
- conductor
- border
- 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
Links
- 239000004020 conductor Substances 0.000 claims abstract description 27
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000004080 punching Methods 0.000 claims description 2
- 230000000284 resting effect Effects 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 3
- 229910000881 Cu alloy Inorganic materials 0.000 abstract description 2
- 229910052802 copper Inorganic materials 0.000 abstract description 2
- 239000010949 copper Substances 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000035515 penetration Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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
- 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
- H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
- H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
- H01R4/242—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members being plates having a single slot
- H01R4/2425—Flat plates, e.g. multi-layered flat plates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending
Definitions
- the present invention relates to a connector for electric connections.
- connectors are usually used in electrical connections and wirings; these connectors are obtained from a laminar element wherein the electric contact elements are capable of adequately punching through the insulating sheath, if any, of the conductor and of entering it to provide contact.
- One kind of these connectors comprises a laminar body made of a conducting metallic material with at least two oppositely arranged substantially rigid wings which form, between them, a slot in which two elastic electrical contact tabs converge towards the bottom; each tab blends with one of the wings, forming an elbow.
- a conductor can be inserted and locked between said elastic tabs, forming an electric contact.
- Some regions of the borders of the tabs are sharp, so that during the insertion of the conductor between them the insulating sheath thereof is cut and so that said tabs can penetrate in the conductor and provide contact with the conducting part.
- the laminar element from which the connector is obtained is blanked by means of punches which must of course have a certain thickness in order to provide an effective cutting action.
- the two tabs are mutually spaced during initial blanking and are then moved mutually closer so as to move into mutual contact their ends which must accommodate the conductor, giving them an elastic pre-loading.
- the notches have the important drawback that they weaken the structure exactly in a region where the stresses induced by the presence of the conductor once installed tend to discharge.
- a principal aim of the present invention is to provide a connector for electrical connections of the type described above which eliminates the drawbacks described above in the known art.
- a consequent primary object is to provide a connector that provides improved contact and electrical connection with respect to those currently commercially available.
- Another important object is to provide a connector which is suitable for electrical conductors having a wide range of diameters.
- Another important object is to provide a connector whose manufacture does not entail particular technical difficulties, with particular reference to the operations for blanking with punches.
- Another important object is to provide a connector that can be manufactured without particular difficulties with conventional equipment and facilities.
- Another important object is to provide a connector that can be manufactured with dies that are more reliable than current ones.
- a connector for electrical connections of the type which comprises a laminar body made of conducting material with at least two substantially rigid oppositely arranged wings which form a slot in which two elastic tabs converge towards the bottom, each tab blending with a corresponding one of said wings so as to form an elbow-shaped portion, an insulated electrical conductor being insertable between said elastic tabs up to their free ends, parts of the borders of said tabs being sharp, said connector being characterized in that said tabs are pre-loaded, so as to push towards each other, by raised portions, which are formed so as to affect the inner border of each one of said elbow-shaped blending portions, and by a deformation of said wings, which has the purpose of moving their ends mutually closer.
- the bottom of said slot in which said tabs extend has a portion which extends closer to the ends of said tabs and is formed, after blanking, by a raised portion which is formed on said body, forming a supporting border for said conductor when it is inserted between said tabs.
- a connector for electrical connections is generally designated by the reference numeral 10 and comprises a laminar body 11 made of a conducting material, such as copper or copper alloy, with two oppositely arranged wings 12; each wing is wide enough to be substantially rigid, and said wings form, between them, a slot 13 in which two elastic tabs 15 converge towards the bottom 14; each tab blends, by means of an elbow-shaped portion 16, with a corresponding wing 12.
- a laminar body 11 made of a conducting material, such as copper or copper alloy
- Said tabs 15 touch each other at a flat tip region 17 thereof and together they delimit a space 18 which tapers from the region of the elbow-shaped portions 16 towards the region of mutual contact.
- Each border of the tabs 15 that delimits the space 18 has a double blade 19 obtained by chamfering, by plastic deformation, the material at the edges.
- An insulated electric conductor 20 (enamelled copper wire) can be inserted between the elastic tabs 15 until it accommodates between the flat regions 17; its coating is conveniently subjected, in substantially opposite positions, to a double incision by the double blade 19, which makes the tabs 15 penetrate the insulating layer 21 to reliably and broadly rest against the core 22 with the flat regions 17 so as to provide electrical contact.
- said tabs 15 are formed by blanking the metal plate from which the connector 10 is obtained with a punch that forms said tabs so that they have flat regions 17 at a certain distance from one another and so that their ends are spaced from the bottom 14 of the slot 13.
- the two elastic tabs 15 are pre-loaded so as to push towards each other by corresponding raised portions 23, which are formed so as to affect the inner border of each elbow-shaped blending portion 16, and by a deformation of said wings 12, as will become apparent hereinafter, which are moved so that their ends become mutually closer, assuming a parallel arrangement, from an initial state after blanking in which they diverge.
- a raised portion 24 is formed on the body 11 so as to affect the border of the slot 13 in order to move a portion thereof towards the tabs 15.
- the raised portion 24 can be adjusted according to the type of material and/or its thickness without having to act on the blanking punches.
- a second step (figure 5), blanking is performed by means of punches 27 so as to form the border of said elastic tabs 15 which forms the part 18 for the insertion of the conductor 20.
- Adequate space is left between the flat regions 17 due to the need to form the punch with a certain thickness.
- a further step forms the double blades 19 on the elastic tabs 15 by compression, for example by means of suitable punches 28.
- a subsequent step (figure 7) performs blanking, by means of a punch 29, so as to form the border of said slot 13 and the remaining parts of the tabs 15.
- the final step is the gauging of said body 11 so as to move the divaricated ends of said wings 12 mutually closer, in order to provide a second pre-loading of said tabs 15, which are pushed towards the bottom of the slot 13.
- each elbow-shaped portion 16 in fact produces a first pre-loading of the tabs 15 without weakening the structure as hitherto required in known embodiments.
- Pre-loading is conveniently completed by moving mutually closer the ends of the wings 12 which are divaricated after the blanking operation.
- the ends of the tabs 15 can move freely and elastically without interference with the bottom 14 of the slot 13 from which the raised portion 24 is formed; said raised portion cooperates with said tabs in retaining the conductor 20.
- the border with a double blade and contact over a flat region furthermore help to improve both penetration in the insulating layer 21 and actual electrical contact.
- the final flat part of the tabs allows the connection of thinner enamelled wires without the risk of cutting them.
- the materials employed may be any according to the requirements.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
- Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
- Details Of Aerials (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITPD930189A IT1263694B (it) | 1993-09-24 | 1993-09-24 | Connettore per collegamenti elettrici |
ITPD930189 | 1993-09-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0645857A1 true EP0645857A1 (fr) | 1995-03-29 |
EP0645857B1 EP0645857B1 (fr) | 1997-11-26 |
Family
ID=11390446
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94114721A Expired - Lifetime EP0645857B1 (fr) | 1993-09-24 | 1994-09-19 | Connecteur pour raccordement électrique |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0645857B1 (fr) |
AT (1) | ATE160654T1 (fr) |
DE (1) | DE69407016T2 (fr) |
DK (1) | DK0645857T3 (fr) |
ES (1) | ES2111227T3 (fr) |
GR (1) | GR3025820T3 (fr) |
IT (1) | IT1263694B (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0788189A2 (fr) * | 1996-01-31 | 1997-08-06 | INARCA S.p.A. | Connecteur pour des connexions électriques |
EP1953868A2 (fr) | 2007-02-02 | 2008-08-06 | INARCA S.p.A. | Contact de raccordement pour fils électriques émaillés |
US20190296472A1 (en) * | 2018-03-26 | 2019-09-26 | Tyco Electronics (Shanghai) Co. Ltd. | Conductive Terminal And Connector |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4012102A (en) * | 1976-05-26 | 1977-03-15 | Minnesota Mining And Manufacturing Company | Solderless electrical contact |
FR2343343A1 (fr) * | 1976-03-01 | 1977-09-30 | Northern Telecom Ltd | Cosse coupante pour conducteur isole |
US4136628A (en) * | 1976-07-30 | 1979-01-30 | Western Electric Company, Inc. | Methods of and apparatus for making slotted beam contact elements |
DE3116731A1 (de) * | 1981-04-28 | 1982-11-18 | Karl Lumberg GmbH & Co, 5885 Schalksmühle | Kontaktelement |
GB2130815A (en) * | 1982-10-20 | 1984-06-06 | H & T Components Ltd | Electrical connectors |
US4638559A (en) * | 1984-10-30 | 1987-01-27 | At&T Technologies, Inc. | Methods of and apparatus for making slotted beam contact elements |
WO1988005216A1 (fr) * | 1987-01-09 | 1988-07-14 | Amtronics, Inc. | Bornes de deplacement d'isolation |
-
1993
- 1993-09-24 IT ITPD930189A patent/IT1263694B/it active IP Right Grant
-
1994
- 1994-09-19 DE DE69407016T patent/DE69407016T2/de not_active Expired - Lifetime
- 1994-09-19 DK DK94114721T patent/DK0645857T3/da active
- 1994-09-19 AT AT94114721T patent/ATE160654T1/de active
- 1994-09-19 EP EP94114721A patent/EP0645857B1/fr not_active Expired - Lifetime
- 1994-09-19 ES ES94114721T patent/ES2111227T3/es not_active Expired - Lifetime
-
1997
- 1997-12-30 GR GR970403470T patent/GR3025820T3/el unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2343343A1 (fr) * | 1976-03-01 | 1977-09-30 | Northern Telecom Ltd | Cosse coupante pour conducteur isole |
US4012102A (en) * | 1976-05-26 | 1977-03-15 | Minnesota Mining And Manufacturing Company | Solderless electrical contact |
US4136628A (en) * | 1976-07-30 | 1979-01-30 | Western Electric Company, Inc. | Methods of and apparatus for making slotted beam contact elements |
DE3116731A1 (de) * | 1981-04-28 | 1982-11-18 | Karl Lumberg GmbH & Co, 5885 Schalksmühle | Kontaktelement |
GB2130815A (en) * | 1982-10-20 | 1984-06-06 | H & T Components Ltd | Electrical connectors |
US4638559A (en) * | 1984-10-30 | 1987-01-27 | At&T Technologies, Inc. | Methods of and apparatus for making slotted beam contact elements |
WO1988005216A1 (fr) * | 1987-01-09 | 1988-07-14 | Amtronics, Inc. | Bornes de deplacement d'isolation |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0788189A2 (fr) * | 1996-01-31 | 1997-08-06 | INARCA S.p.A. | Connecteur pour des connexions électriques |
EP0788189A3 (fr) * | 1996-01-31 | 1998-11-11 | INARCA S.p.A. | Connecteur pour des connexions électriques |
EP1953868A2 (fr) | 2007-02-02 | 2008-08-06 | INARCA S.p.A. | Contact de raccordement pour fils électriques émaillés |
EP1953868A3 (fr) * | 2007-02-02 | 2009-09-16 | INARCA S.p.A. | Contact de raccordement pour fils électriques émaillés |
US7644541B2 (en) | 2007-02-02 | 2010-01-12 | Inarca S.P.A. | Terminal for enameled electric wires |
US20190296472A1 (en) * | 2018-03-26 | 2019-09-26 | Tyco Electronics (Shanghai) Co. Ltd. | Conductive Terminal And Connector |
CN110364842A (zh) * | 2018-03-26 | 2019-10-22 | 泰科电子(上海)有限公司 | 导电端子和连接器 |
US10770820B2 (en) * | 2018-03-26 | 2020-09-08 | Tyco Electronics (Shanghai) Co. Ltd. | Conductive terminal and connector |
CN110364842B (zh) * | 2018-03-26 | 2021-05-28 | 泰科电子(上海)有限公司 | 导电端子和连接器 |
Also Published As
Publication number | Publication date |
---|---|
DE69407016T2 (de) | 1998-04-16 |
GR3025820T3 (en) | 1998-03-31 |
EP0645857B1 (fr) | 1997-11-26 |
DE69407016D1 (de) | 1998-01-08 |
IT1263694B (it) | 1996-08-27 |
ITPD930189A0 (it) | 1993-09-24 |
DK0645857T3 (da) | 1998-08-10 |
ES2111227T3 (es) | 1998-03-01 |
ATE160654T1 (de) | 1997-12-15 |
ITPD930189A1 (it) | 1995-03-24 |
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