EP0704932A2 - Dispositif de serrage - Google Patents

Dispositif de serrage Download PDF

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Publication number
EP0704932A2
EP0704932A2 EP95114183A EP95114183A EP0704932A2 EP 0704932 A2 EP0704932 A2 EP 0704932A2 EP 95114183 A EP95114183 A EP 95114183A EP 95114183 A EP95114183 A EP 95114183A EP 0704932 A2 EP0704932 A2 EP 0704932A2
Authority
EP
European Patent Office
Prior art keywords
plug
metal plate
terminal according
opening
tongue spring
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Withdrawn
Application number
EP95114183A
Other languages
German (de)
English (en)
Other versions
EP0704932A3 (fr
Inventor
Wolf Neumann-Henneberg
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.)
Adolf Wuerth GmbH and Co KG
Original Assignee
Adolf Wuerth GmbH and Co KG
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 Adolf Wuerth GmbH and Co KG filed Critical Adolf Wuerth GmbH and Co KG
Publication of EP0704932A2 publication Critical patent/EP0704932A2/fr
Publication of EP0704932A3 publication Critical patent/EP0704932A3/fr
Withdrawn legal-status Critical Current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

Definitions

  • the invention is based on a plug-in terminal for connecting at least two electrical lines.
  • Plug-in terminals of this type are known. They are used to electrically and mechanically connect several electrical lines. The cables are stripped and each cable is inserted through an opening in a housing in which the connection is made.
  • a plug-in terminal is DE 23 17 040 C3.
  • a tongue spring is bent when inserting the stripped line end, which presses the line end against an opposite bend of a metal plate.
  • the disadvantage of the known plug-in terminals is the high stress on their springs. Typically, the tongue springs are deformed to their plastic area, so that they only partially when the line is removed deform back. Among other things, this means that the plug-in terminal can only be reused a few times.
  • an electrical plug-in terminal is known (US-A-4 397 514), in which the clamping spring is arranged within a U-shaped guide element.
  • the clamping spring has a tongue spring part which merges into a bent part. In cross section, the curved part extends over a 3/4 circle. The bend occurs within this arc. The transition to the arcuate part and the ignition spring part can bear against a counter element in order to prevent the spring from being pulled off.
  • an electrical connecting terminal (DE-U-87 09 226) in which a leaf spring is fixed in its central part. Both ends are bent inwards. One end of the leaf spring serves as a clamping spring, which rests against the end of the opposite part in the event of greater bending. In the event of further bending, the clamping force increases accordingly.
  • the invention has for its object to provide a plug-in terminal for connecting at least two electrical lines, in which the spring should remain in its elastic range when jammed.
  • the invention proposes a plug-in terminal with the features mentioned in claim 1. Developments of the invention are the subject of dependent claims.
  • the tongue spring is clamped to the metal plate, in particular by jamming by bending the metal plate.
  • the metal plate can have a punched-out area which reaches through an opening in the plate forming the tongue spring and takes over the jamming there.
  • the shape formed on the tongue spring is intended to rest on the metal plate, in particular on a free edge of the metal plate, for example on the bent part.
  • the invention proposes in a further development that the formation on the tongue spring can be formed by a punched-out portion which forms a tab stamped out of the surface of the spring, the free edge of which forms the contact surface for contact with the counter element. In this way, the formation can be produced very easily and it can carry out a flat contact of the front edge.
  • the tongue spring has at least one bend in the manner of a kink. In this way, the overall height of the housing in which the metal parts are housed can be reduced.
  • the tongue spring can be designed in such a way that its shape rests on the counter element in the state without a pinched line. Then the tongue spring reinforcement already works when connecting very small cables.
  • the tongue spring is designed such that it only rests with its shape on the counter element when it is bent out of its zero position, in which no line is fastened.
  • the metal plate is designed such that it extends perpendicular to the direction of insertion of the line in the region of its opening.
  • the metal plate can be designed such that it runs parallel to the direction of insertion in the region in the insertion direction behind the opening. As a result, a relatively large area is formed on which the stripped line end can rest on the metal plate against which it is pressed by the spring.
  • the metal plate can be designed such that it is angled in the region in the insertion direction in front of its opening parallel to the insertion direction, so that the overall height of the housing can also be reduced at this point.
  • the housing has a sleeve-like extension behind the insertion opening, which is in particular integrally formed on the housing.
  • This sleeve-like extension facilitates insertion in the direction that causes the stripped end to pass through the opening in the metal plate.
  • the sleeve tapers like a funnel at its end facing away from the insertion opening into the housing by the thickness of the insulation.
  • the metal plate has an inclined section between the area of its opening in which it runs perpendicular to the direction of insertion and its front area in which it runs parallel to the direction of insertion.
  • This sloping section can compensate for the area of the funnel shape of the insertion sleeve.
  • the plug-in terminal shown in FIG. 1 contains a housing 1 which is elongated and flat.
  • the housing material is plastic. It is on one end open and can be closed there with the help of a lid 2.
  • a lid 2 In the side wall 3 to be seen in FIG. 1, there are a number of insertion openings 4 lying side by side. Only the housing is visible to the user of the plug-in terminal. After he has stripped them, he pushes the lines to be connected through the insertion openings 4 into the housing. These are then connected to one another within the housing.
  • Fig. 2 shows an angled longitudinal section through the plug-in terminal of Fig. 1, along the line II-II in Fig. 3.
  • the side wall 3 with the insertion openings is arranged in Fig. 2 below.
  • a metal plate 5 is arranged in the housing, which extends over the entire length of the plug-in terminal and is responsible for all insertion openings 4.
  • a one-piece metallic plate 6 made of resilient material is mechanically and electrically connected to the metal plate 5 and has individual slots 8 starting from its upper longitudinal side edge 7 in FIG. 2. Tongue springs 9 which are separate from one another are formed by the slots 8. All tongue springs 9 are therefore in one piece part of a metal plate 6.
  • the slots 8, which can be very narrow, are provided so that the tongue springs 9 do not interfere with each other.
  • FIG 3 shows the structure and arrangement of the metal plate 5 and the tongue spring plate 6 connected to it.
  • the sleeve 10 has one axial extent that the insulation of the lines to be connected can be inserted into the housing by a sufficient amount.
  • the initially cylindrical sleeve 10 is then followed by a funnel-like reducing part 11, along which the inner diameter of the sleeve decreases until the diameter corresponds to the diameter of the end region 12.
  • the diameter reduction is chosen so that it corresponds approximately to the thickness of the insulation.
  • the front stripped part of the line is thus led through the funnel area 11 to the opening 12.
  • the metal sheet 5 which extends over the entire length of the housing, has a bend 13 in the region of its one longitudinal edge, which bends into a groove arranged in the housing 1 or bears against a shoulder.
  • the bend 13 is followed by a flat part 14 of the metal plate 5, which runs parallel to the longitudinal direction of the housing and to the insertion direction of the insertion opening 4, that is to say parallel to the axis of the line to be inserted.
  • the flat part 14 is connected, in turn connected by a 90 ° bend, to a flat part 15, which, however, runs perpendicular to the direction of insertion of the lines.
  • the metal plate 5 has an opening for the insertion of the stripped end of the line for each insertion opening, which opening lies immediately behind the end region 12 of the sleeve 10.
  • the flat, right-angled part 15 of the metal plate 5 is now followed by a sloping part 16 and another flat part 17, which in turn runs parallel to the direction of insertion. Because of this multiple bending the housing 1 and thus the plug-in terminal can be manufactured with a low overall height.
  • the tongue spring plate 6 has two bends 19, 20 so that it runs parallel to the direction of insertion in its area on the right in FIG. 3, but obliquely to the direction of insertion in the area of its free end 21. In its empty position, i.e. when the line is not inserted, the free end 21 of each tongue 9 rests on the flat parallel section 14 of the metal plate 5.
  • FIG. 4 represents an enlarged section through the metal plate 5 and the tongue spring plate 6.
  • the tongue spring plate 6 In its horizontal region in FIG. 4, the tongue spring plate 6 contains a plurality of openings 22 arranged in the longitudinal direction at the same point.
  • the tab 18 of the metal plate 5 is inserted through each opening 22 and pressed onto the tongue spring plate 6 from above.
  • the pressing takes place in such a way that the tabs 18 are bent twice by 90 °, so that a U-shape is created in cross section.
  • the corresponding part of the tongue spring plate 6 is thereby fixed between the two legs of the U.
  • the tongue spring plate 6 contains several punched-out areas, in which the material of the tongue spring plate 6 is pressed upwards, ie away from the metal plate 5. These protrusions 24, which are pushed out upwards, likewise form free end edges 25.
  • the end edges 25 lie opposite the end edges 23 of the bent tabs. In the embodiment shown in FIG. 4, there is a small distance between the two end edges. As soon as a line is inserted through the section 15 of the metal plate 5, it bends the tongue spring 9 clockwise. This deformation is distributed over the entire deformable area of the tongue spring 9, so that after a short deformation the two end faces 25, 23 abut one another.
  • the shape of the characteristic curve of the deformation of the tongue spring changes, so that the tongue spring 9 can remain in the elastic range during the deformation. This not only improves the holding ability and holding force of the plug-in terminal for each inserted cable, but also improves the service life. After removing the cable, the plug-in terminal can be reused more often than plug-in terminals according to the prior art.
  • two such formations 24 are formed on the tongue spring plate 6 for each spring tongue 9, each of which abuts the end face 23 of the tab 18.
  • the tabs 18 are arranged centrally with respect to the slot separating two tongue springs 9, so that the two formations 24, each associated with a tongue spring 9, bear against two adjacent tabs 18.
  • Two half tabs 18a are then respectively provided for the first and last tongue 9 in the longitudinal direction of the plug-in terminal.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
EP95114183A 1994-09-27 1995-09-09 Dispositif de serrage Withdrawn EP0704932A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4434391A DE4434391A1 (de) 1994-09-27 1994-09-27 Steckklemme
DE4434391 1994-09-27

Publications (2)

Publication Number Publication Date
EP0704932A2 true EP0704932A2 (fr) 1996-04-03
EP0704932A3 EP0704932A3 (fr) 1996-11-06

Family

ID=6529241

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95114183A Withdrawn EP0704932A3 (fr) 1994-09-27 1995-09-09 Dispositif de serrage

Country Status (2)

Country Link
EP (1) EP0704932A3 (fr)
DE (1) DE4434391A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1217692A3 (fr) * 2000-12-20 2003-12-10 HAGER ELECTRO GmbH Borne de connection pour conducteurs électriques

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19654611B4 (de) * 1996-12-20 2004-09-30 Wago Verwaltungsgesellschaft Mbh Federkraftklemmanschluß für elektrische Leiter
DE19729014A1 (de) * 1997-07-02 1999-01-07 Wago Verwaltungs Gmbh Elektronische Vorschaltgeräteklemme
DE10239273A1 (de) * 2002-08-22 2004-03-04 Wago Verwaltungsgesellschaft Mbh Federkraftklemmanschluß für einen elektrischen Leiter
DE202011052013U1 (de) 2011-11-18 2011-12-27 Bruno Kassnell-Henneberg Kontaktklemme

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2317040A1 (de) 1973-04-05 1974-10-24 Wago Kontakttechnik Gmbh Schraubenlose anschluss- oder verbindungsklemme fuer elektrische leitungen
US4397514A (en) 1980-04-04 1983-08-09 Legrand Self-clamping electrical connectors and terminal blocks
DE8709226U1 (de) 1987-07-03 1987-08-20 Electro-Terminal Gmbh, Innsbruck Elektrische Verbindungsklemme

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB751675A (en) * 1953-09-17 1956-07-04 Arrow Electric Switches Ltd Improvements in terminals for electrical wires
DE2060532A1 (de) * 1970-12-09 1972-06-22 Wago Kontakttechnik Gmbh Schraubenlose Anschluss- oder Verbindungsklemme
DE7408006U (de) * 1974-03-07 1974-11-21 Elektrotechnische Fabrik Friedrich Joerg Federdruckklemme
DE7511815U (fr) * 1975-04-15 1975-10-02 Weco Wester Ebbinghaus & Co
FR2391632A7 (fr) * 1977-05-20 1978-12-15 Burndy Corp Dispositif de connexion electrique pour surfaces de contact recouvertes
DE8137617U1 (de) * 1981-12-23 1982-04-15 Weco Wester, Ebbinghaus & Co, 6450 Hanau Schraublosklemme vorzugsweise für Niederspannungsanlagen bestimmt
DE8306739U1 (de) * 1983-03-09 1983-06-16 Gira Elektrotechnische Industrie Gustav Giersiepen, 5608 Radevormwald Elektrische Schutzkontaktsteckdose
DE9014223U1 (de) * 1990-10-11 1992-03-05 Dr. Hengelhaupt Verbindungstechnik, O-4731 Göllingen Luftdicht gekapselte Leiteraufnahmekammer für Klemmverbindungselemente in der Elektroinstallation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2317040A1 (de) 1973-04-05 1974-10-24 Wago Kontakttechnik Gmbh Schraubenlose anschluss- oder verbindungsklemme fuer elektrische leitungen
US4397514A (en) 1980-04-04 1983-08-09 Legrand Self-clamping electrical connectors and terminal blocks
DE8709226U1 (de) 1987-07-03 1987-08-20 Electro-Terminal Gmbh, Innsbruck Elektrische Verbindungsklemme

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1217692A3 (fr) * 2000-12-20 2003-12-10 HAGER ELECTRO GmbH Borne de connection pour conducteurs électriques

Also Published As

Publication number Publication date
DE4434391A1 (de) 1996-03-28
EP0704932A3 (fr) 1996-11-06

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