EP0908965A1 - Selbstspannende Anschlussklemme - Google Patents

Selbstspannende Anschlussklemme Download PDF

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Publication number
EP0908965A1
EP0908965A1 EP98402430A EP98402430A EP0908965A1 EP 0908965 A1 EP0908965 A1 EP 0908965A1 EP 98402430 A EP98402430 A EP 98402430A EP 98402430 A EP98402430 A EP 98402430A EP 0908965 A1 EP0908965 A1 EP 0908965A1
Authority
EP
European Patent Office
Prior art keywords
hollow body
branch
connection terminal
terminal according
fixing
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
Application number
EP98402430A
Other languages
English (en)
French (fr)
Other versions
EP0908965B1 (de
Inventor
Marcel Daccord
Jean-Guy Sazerat
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Legrand SNC
Legrand France SA
Original Assignee
Legrand SA
Legrand SNC
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 Legrand SA, Legrand SNC filed Critical Legrand SA
Publication of EP0908965A1 publication Critical patent/EP0908965A1/de
Application granted granted Critical
Publication of EP0908965B1 publication Critical patent/EP0908965B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
    • H01R4/4819—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end the spring shape allowing insertion of the conductor end when the spring is unbiased
    • H01R4/4821—Single-blade spring
    • 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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4846—Busbar details
    • H01R4/485—Single busbar common to multiple springs

Definitions

  • the present invention relates generally to the terminals of connection of the type of those fitted to electrical appliances for their connection to the electrical conductors of their own electrical cable food.
  • connection terminals which are commonly called automatic clamping, that is to say those whose connection to an electrical conductor is by simply plugging in the previously stripped end of it, without the intervention of a any tool.
  • the present invention relates to those of these self-tightening connection terminals which comprise, on the one hand, a hollow body, of conductive material, which for plugging in a conductor electric, opens to the outside via at least one engagement input, having, on either side thereof, two opposite walls, one lower, the other upper, and, on the other hand, a leaf spring, which has at least two branches connected continuously to each other by a rounded bend, namely, a fixing branch, which extends outside the hollow body, at contact of the bottom wall thereof, being duly subject to this lower wall, and a connecting branch, which intervenes freely, of elastically deformable, in the hollow body, extending generally at an angle to the engagement entry of this hollow body, in direction of its upper wall, the intermediate elbow between these two branches bypassing the front edge of the lower wall of this hollow body.
  • the leaf spring is integral of the lower wall of the hollow body by its fixing branch, and, by its connection branch, it clamps the electrical conductor against the upper wall of this hollow body.
  • connection terminal of this type is notably described in the French patent which, filed on April 4, 1980, under No. 80 07675, was published under No 2 480 037.
  • the intermediate elbow between the two branches of the leaf spring extends away from the front edge of the wall concerned with the hollow body, forming, in practice, in front of this section front, a loop that extends over 180 °.
  • connection branch of the leaf spring may, in other applications, be less satisfactory, because the axis of rotation along which this branch of connection flexes when engaging an electrical conductor is indeterminate and it follows that this branch of connection then taking a more or less random position, the mechanical strength ensured, that is to say resistance offered by the electrical conductor when traction is inadvertently exerted on him, is itself more or less uncertain.
  • German utility model No 82 32 135.3 which, moreover, does not not exactly concerns a connection terminal of the same type in the measure, at least, where, on the one hand, the bend of the leaf spring is located side opposite to the entry of engagement of the hollow body, and where, on the other hand, this one has only one wall, the electrical conductor being clamped on the very inner surface of this wall, the leaf spring is in contact one of the edges of this wall by its elbow, in this case its edge back.
  • the leaf spring bears at rest on the whole of this slice.
  • the present invention generally relates to a provision to avoid these drawbacks.
  • connection terminal to automatic clamping of the kind comprising, on the one hand, a hollow body, in conductive material, which opens to the outside via at least one inlet of engagement, by presenting, on either side of it, two walls opposite, one lower, the other upper, and, on the other hand, a blade of spring, which has at least two branches continuously connected to each other by a rounded bend, namely, a fixing branch, which extends to the exterior of the hollow body, in contact with the bottom wall thereof, being duly secured to this lower wall, and a connecting branch, which intervenes freely, elastically deformable, in the body hollow, extending generally at an angle to the engagement input of this hollow body, in the direction of the upper wall thereof, the elbow intermediate between these two branches bypassing the front edge of the wall bottom of this hollow body, this connection terminal being in a way general characterized in that the leaf spring, which is in contact with the front edge of the lower wall of the hollow body by its elbow, does not bear against this edge before that by the lower edge
  • the axis of rotation along which the branch of leaf spring connection flexes when engaging a conductor electric is advantageously well determined, since it is materialized by the lower edge of the lower wall of the hollow body, for the benefit of working conditions of this branch of connection, and, in particular, at benefit of the mechanical resistance it provides towards the driver electric.
  • the terminal of connection 10 comprises, overall, on the one hand, a body hollow 11, of conductive material, which opens to the outside by at least one engagement entry 12, by presenting, on either side thereof, two opposite walls 13, 14, one lower, forming a floor, the other upper, forming a roof, and, on the other hand, a spring leaf 15, which has at least two branches 16, 18 continuously connected to each other by an elbow 19 rounded, namely, a fixing branch 16, which extends outside the body hollow 11, in contact with the bottom wall 13 thereof, being duly subject to this lower wall 13 according to arrangements described more in detail later, and a connecting branch 18, which intervenes freely, elastically deformable, in the hollow body 11, extending generally at an angle to the engagement input 12 of this hollow body 11, towards the upper wall 14 thereof, the intermediate bend 19 between these two branches 16, 18 bypassing the front edge 22 of the wall lower 13 of this hollow body 11.
  • the leaf spring 15 which is in contact with the front edge 22 of the wall lower 13 of the hollow body 11 by its elbow 19, does not bear against this front edge 22 only by the lower edge 23 thereof.
  • the hollow body 11 comprises, parallel to one another, for the same bottom wall 13, two engagement inputs 12, the width of which is less than half of that of this lower wall 13, and which are thereby separated one of the other by a slot 24.
  • the hollow body 11 For each of the engagement inputs 12, the hollow body 11 has an individual upper wall 14.
  • the hollow body 11 comprises, coming in one piece from its lower wall 13, two walls lateral 26, which extend substantially parallel to each other, and, in practical, substantially perpendicular to the bottom wall 13, and its upper walls 14 themselves form returns, which, directed towards the interior, each comes, respectively, in one piece from these walls side 26.
  • the upper walls 14 of the hollow body 11 are curved, substantially in an arc, with their concavity facing the bottom wall 13.
  • the side walls 26 are very largely indented by a recess 28, which results in leaving the rear portion 29 clear longitudinal edges 30 of the bottom wall 13.
  • this bottom wall 13 of the hollow body 11 is extended, at the rear, by a contact tab 31, provided, in projection, of a contact grain 32.
  • the hollow body 11 generally falls within a regulated area of which all the generators are parallel to each other, like a tubular body.
  • the leaf spring 15 comprises, parallel to one another, for the same fixing branch 1 6, two connection branches 18, which each correspond respectively to the two engagement inputs 12 of the hollow body 11, and which are separated from each other by a slot 34.
  • This width L2 is very much less than the width L1 of the slot 24 separating the two engagement inlets 12 from the hollow body from one another 11.
  • the two branches connection 18 each form laterally along this slot 34, a tongue 35, which, folded substantially parallel to the fixing branch 16, protrudes on their current part on the same side as this branch of attachment 16, and by which they are each respectively capable of carrying on the free edge of the return 27 of the corresponding upper wall 14 of the hollow body 11.
  • this tongue 35 is rounded, with its concavity facing the bottom wall 13 of the hollow body 11.
  • the return 27 of the walls upper 14 of the hollow body 11 has, in correspondence, a notch 36, which, in addition, is itself rounded.
  • the tongue 35 of each of the connecting branches 18 extends transversely beyond the return 27 of the upper wall 14 corresponding to the hollow body 11, and thus projecting into the slot 24 of this one, it is accessible thanks to this slot 24.
  • the connecting branches 18 of the leaf spring 15 extend in a substantially rectilinear manner from of the elbow 19 which connects them to the fixing branch 16.
  • the leaf spring 15 thus formed can very simply be produced using a spring steel strip suitably cut, shaped and treaty.
  • the hollow body 11 comprises, in the embodiments shown, at at least one fixing lug 38, which, integral with this lower wall 13, is folded in a U in contact with the fixing branch 16 of this leaf spring 15.
  • the hollow body 11 comprises two fixing lugs 38, which, each acting respectively along the two longitudinal edges 30 from its bottom wall 13, generally enclose the branch transversely fixing plate 16 of the spring leaf 15.
  • these two fixing lugs 38 come in one piece from the bottom wall 13 of the hollow body 11 to the favor of the rear portion 29 released from the longitudinal edges 30 thereof.
  • the two fixing lugs 38 extend substantially parallel to each other, and the same is true for portions 39, at least, longitudinal edges 40 of the securing branch 16 of the leaf spring 15 concerned by these fixing lugs 38.
  • the two fixing lugs 38 formed by the hollow body 11 generally extend at an angle to each other, in diverging from one another in the opposite direction to the inputs engagement 12 of this hollow body 11, and the same is true of the portions 39, at least longitudinal edges 40 of the attachment branch 16 of the blade spring 15 concerned by these fixing lugs 38.
  • indexing means are provided between the branch of fixing 16 of the spring leaf 15 and the hollow body 11, for better position control of this leaf spring 15 relative to this hollow body 11 during assembly.
  • indexing means comprise, on the fixing branch 16 of the leaf spring 15, at least one shoulder 41, which extends transversely to its longitudinal edges 40, and by which this fastening arm 16 carries on the front side edge of the lug corresponding fixing 38 of the hollow body 11.
  • the indexing means very simply result from the dovetail mounting provided by the fixing lugs 38 due to their obliquity one with respect to to the other.
  • this dovetail assembly requires advantageously less manufacturing precision.
  • these retaining means comprise, on the fixing branch 16 of the leaf spring 15, at least one shoulder 43, which extends transversely to its longitudinal edges 40, and by which this fastening branch 16 door on the rear side edge of the lug corresponding fixing 38 of the hollow body 11.
  • the shoulder 41 belonging to the indexing means and that 43 belonging the retaining means are formed by the lateral edges of the same notch 44 by which the securing branch 16 of the spring leaf 15 is in engagement with the corresponding fixing lug 38 of the hollow body 11.
  • the attachment branch 16 of the spring leaf 15 therefore has a notch 44 on each of its longitudinal edges 40 in this form of realization and the portion 39 thereof concerned by the fixing lugs 38 the hollow body 11 forms the bottom.
  • the attachment branch 16 of the spring leaf 15 therefore has laterally, on its longitudinal edges 40, in this embodiment, two notches 44 by which it engages the fixing lugs 38 that the hollow body 11 forms in correspondence.
  • the retaining means provided according to the invention comprise, on the hollow body 11, a pin 45, and, on the attachment branch 16 of the spring leaf 15, a recess 46 by which this fixing branch 16 is engaged with the pin 45 of the hollow body 11.
  • the pin 45 has a circular outline, and the same is true, in a complementary manner, of the recess 46.
  • the portion 39 of the edges longitudinal 40 of the fixing branch 16 of the spring leaf 15 continues freely to the free end of this attachment branch 16 in withdrawal with respect to the current portion of these longitudinal edges 40.
  • the retaining means provided according to the invention result, like the means previous indexing, dovetail mounting provided by the legs fixing 38 of the hollow body 11.
  • holding means are also provided between the leaf spring 15 and the hollow body 11, to avoid possible biasing of this blade spring 15 relative to this hollow body 11 when only one of its connection branches 18 is stressed.
  • these holding means comprise, on the hollow body 11, a lug 47, which projects on the front edge 22 of its lower wall 13, in the central region thereof, extending into the extension of this lower wall 13, and, on the elbow 19 of the blade spring 15, at the root of the slot 34 separating the two from one another connection branches 18 of this leaf spring 15, a recess 48 by which this leaf spring 15 is engaged with the lug 47 of the hollow body 11.
  • the lug 47 has a quadrangular contour, and, for example, rectangular, and the recess 48 has a circular outline.
  • the lug 47 of the hollow body 11 has an outline trapezoidal, going thinner towards its free end, this which advantageously promotes retention of the leaf spring 15 according to the plane of symmetry of the hollow body 11.
  • the recess 48 has a quadrangular contour, and, by example, square, which, by the resulting shoulders, allows advantageously to limit the play of the spring leaf 15 perpendicularly to the bottom wall 13 of the hollow body 11.
  • the leaf spring 15 is, by construction, in abutment, by its elbow 19, against the lower edge 23 of the front edge 22 of the bottom wall 13 of the hollow body 11.
  • connection branch 18 concerned of the leaf spring 15 pivots about an axis of rotation which, according to the invention, and as it appears from FIGS. 4 and 5, is advantageously materialized by the lower edge 23 of the front edge 22 of the lower wall 13 of the body hollow 11.
  • the stripped end 51 of the electrical conductor 50 then engages between the free end of the connection branch 18 of the spring leaf 15 and the corresponding upper wall 14 of the hollow body 11, and, due to the elasticity of this connection branch 18, it is automatically clamped between it and the upper wall 14 of the hollow body 11.
  • two electrical conductors 50 can be engaged in parallel in the body hollow 11, at the rate of one per engagement entry 12 thereof.

Landscapes

  • Connection Of Batteries Or Terminals (AREA)
  • Clamps And Clips (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)
  • Inert Electrodes (AREA)
  • Multi-Conductor Connections (AREA)
  • Catching Or Destruction (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
EP98402430A 1997-10-06 1998-10-02 Selbstspannende Anschlussklemme Expired - Lifetime EP0908965B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9712416 1997-10-06
FR9712416A FR2769411B1 (fr) 1997-10-06 1997-10-06 Borne de connexion a serrage automatique

Publications (2)

Publication Number Publication Date
EP0908965A1 true EP0908965A1 (de) 1999-04-14
EP0908965B1 EP0908965B1 (de) 2008-05-28

Family

ID=9511857

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98402430A Expired - Lifetime EP0908965B1 (de) 1997-10-06 1998-10-02 Selbstspannende Anschlussklemme

Country Status (8)

Country Link
EP (1) EP0908965B1 (de)
AT (1) ATE397305T1 (de)
DE (1) DE69839546D1 (de)
ES (1) ES2307311T3 (de)
FR (1) FR2769411B1 (de)
HU (1) HUP9802229A3 (de)
PL (1) PL191690B1 (de)
PT (1) PT908965E (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1020954A3 (de) * 1999-01-13 2000-12-20 Albert Ackermann GmbH & Co. KG Elektrische Anschlussklemme
DE29915515U1 (de) * 1999-09-03 2001-02-01 Weidmüller Interface GmbH & Co., 32760 Detmold Federklemme zum Anschließen elektricher Leiter
DE102005045596B3 (de) * 2005-09-23 2007-06-21 Siemens Ag Feder-Steckklemme
EP1950837A1 (de) * 2007-01-03 2008-07-30 Schneider Electric Espana, S.A. Automatische Verbindungsklemme
US7491098B1 (en) 2007-10-10 2009-02-17 General Electric Company Screwless terminal for electrical leads
EP1865577A4 (de) * 2004-07-28 2010-10-20 Division Electrica S A I Schraubenloser zweiwege-verbindungsklemmanschluss
EP3012918A1 (de) * 2014-10-22 2016-04-27 Simon, S.A.U. Schnellerverbindungsendgerätevorrichtung für elektrische verbindungen
EP3282518A1 (de) * 2016-08-09 2018-02-14 Wago Verwaltungsgesellschaft mbH Federkraftklemme zum anschluss eines elektrischen leiters
EP3591765A1 (de) * 2018-07-02 2020-01-08 GIRA GIERSIEPEN GmbH & Co. KG Leiterklemmvorrichtung für elektrische leiter

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009049646A1 (de) 2009-10-15 2011-04-28 Elso Gmbh Kontaktfederkörper für elektrische Installationsgeräte
DE202015105023U1 (de) 2015-09-22 2016-12-23 Weidmüller Interface GmbH & Co. KG Anschlussvorrichtung für Leiter
FR3091958B1 (fr) 2019-01-18 2021-01-22 Legrand France Lame ressort d’une borne de connexion à serrage automatique
GB2638110A (en) * 2022-07-28 2025-08-20 Aptiv Tech Ltd An electrical connector having a ferrule with clinched arms for shielded functionality

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2005923A1 (de) * 1970-02-10 1971-08-26 Wago Kontakttechnik Gmbh Anschluss oder Verbmdungsklemme
DE2726441A1 (de) * 1977-06-11 1978-12-21 Bbc Brown Boveri & Cie Steckdose insbesondere doppelsteckdose
EP0037758A1 (de) * 1980-04-04 1981-10-14 Legrand Elektrische Vorrichtung zum automatischen Verbinden, insbesondere Verbinder für elektrische Leiter
US4566748A (en) * 1984-09-17 1986-01-28 Matsushita Electric Works, Ltd. Connector
DE3503370A1 (de) * 1985-02-01 1986-08-07 Gebrüder Merten GmbH & Co KG, 5270 Gummersbach Schraubenlose anschlussklemme

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2005923A1 (de) * 1970-02-10 1971-08-26 Wago Kontakttechnik Gmbh Anschluss oder Verbmdungsklemme
DE2726441A1 (de) * 1977-06-11 1978-12-21 Bbc Brown Boveri & Cie Steckdose insbesondere doppelsteckdose
EP0037758A1 (de) * 1980-04-04 1981-10-14 Legrand Elektrische Vorrichtung zum automatischen Verbinden, insbesondere Verbinder für elektrische Leiter
US4566748A (en) * 1984-09-17 1986-01-28 Matsushita Electric Works, Ltd. Connector
DE3503370A1 (de) * 1985-02-01 1986-08-07 Gebrüder Merten GmbH & Co KG, 5270 Gummersbach Schraubenlose anschlussklemme

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1020954A3 (de) * 1999-01-13 2000-12-20 Albert Ackermann GmbH & Co. KG Elektrische Anschlussklemme
DE29915515U1 (de) * 1999-09-03 2001-02-01 Weidmüller Interface GmbH & Co., 32760 Detmold Federklemme zum Anschließen elektricher Leiter
US6261120B1 (en) 1999-09-03 2001-07-17 WEIDMüLLER INTERFACE GMBH & CO Resilient contact for connecting electrical conductors
EP1081790A3 (de) * 1999-09-03 2002-04-10 Weidmüller Interface GmbH & Co. Federklemme zum Anschliessen elektrischer Leiter
EP1865577A4 (de) * 2004-07-28 2010-10-20 Division Electrica S A I Schraubenloser zweiwege-verbindungsklemmanschluss
DE102005045596B3 (de) * 2005-09-23 2007-06-21 Siemens Ag Feder-Steckklemme
US7244140B2 (en) 2005-09-23 2007-07-17 Siemens Aktiengesellschaft Spring-operated plug terminal
EP1950837A1 (de) * 2007-01-03 2008-07-30 Schneider Electric Espana, S.A. Automatische Verbindungsklemme
US7491098B1 (en) 2007-10-10 2009-02-17 General Electric Company Screwless terminal for electrical leads
EP3012918A1 (de) * 2014-10-22 2016-04-27 Simon, S.A.U. Schnellerverbindungsendgerätevorrichtung für elektrische verbindungen
EP3282518A1 (de) * 2016-08-09 2018-02-14 Wago Verwaltungsgesellschaft mbH Federkraftklemme zum anschluss eines elektrischen leiters
CN107706550A (zh) * 2016-08-09 2018-02-16 Wago管理有限责任公司 用于连接电导线的弹簧夹
EP3591765A1 (de) * 2018-07-02 2020-01-08 GIRA GIERSIEPEN GmbH & Co. KG Leiterklemmvorrichtung für elektrische leiter

Also Published As

Publication number Publication date
ATE397305T1 (de) 2008-06-15
HUP9802229A3 (en) 2001-11-28
EP0908965B1 (de) 2008-05-28
HUP9802229A2 (hu) 1999-05-28
PL329041A1 (en) 1999-04-12
FR2769411A1 (fr) 1999-04-09
HU9802229D0 (en) 1998-12-28
DE69839546D1 (de) 2008-07-10
ES2307311T3 (es) 2008-11-16
FR2769411B1 (fr) 2000-03-31
PL191690B1 (pl) 2006-06-30
PT908965E (pt) 2008-08-29

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