EP0735614B1 - Douille de contact à vis - Google Patents

Douille de contact à vis Download PDF

Info

Publication number
EP0735614B1
EP0735614B1 EP96103713A EP96103713A EP0735614B1 EP 0735614 B1 EP0735614 B1 EP 0735614B1 EP 96103713 A EP96103713 A EP 96103713A EP 96103713 A EP96103713 A EP 96103713A EP 0735614 B1 EP0735614 B1 EP 0735614B1
Authority
EP
European Patent Office
Prior art keywords
screw
cage
clamping
type terminal
terminal
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.)
Expired - Lifetime
Application number
EP96103713A
Other languages
German (de)
English (en)
Other versions
EP0735614A2 (fr
EP0735614A3 (fr
Inventor
Werner Radde
Klaus Endres
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.)
Weidmueller Interface GmbH and Co KG
Original Assignee
Weidmueller Interface 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 Weidmueller Interface GmbH and Co KG filed Critical Weidmueller Interface GmbH and Co KG
Publication of EP0735614A2 publication Critical patent/EP0735614A2/fr
Publication of EP0735614A3 publication Critical patent/EP0735614A3/fr
Application granted granted Critical
Publication of EP0735614B1 publication Critical patent/EP0735614B1/fr
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
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw
    • H01R4/363—Conductive members located under tip of screw with intermediate part between tip and conductive member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/2458—Electrical interconnections between terminal blocks

Definitions

  • the invention relates to a screw terminal for electrical conductors, with a cage and a clamping screw rotatably arranged in the cage and with a pressure piece movably arranged in the cage, the by means of the clamping screw against a contact piece that is inclined to Clamping screw axis arranged in a conductor receiving space defined by the cage is.
  • the basic structure of such screw terminals is known (DE 6 942 001 U1; DE 4 400 571 A1).
  • the clamping screws rotatably held and stored in the cage. They are in the cage with him displaceable pressure piece in positive thread engagement.
  • This basic structure leads to a complicated, expensive to manufacture construction in both the area between the pivot bearing between the screw and the cage, especially in Area of positive thread engagement between the pressure piece and the Clamping screw.
  • the assembly of the affected parts is also complex and required in any case mechanical use. It is also particularly disadvantageous that the number of engaged threads between the clamping screw and pressure piece varies and when the pressure piece moves very far towards the contact piece, that is For example, if the conductor is very small, it may be hazardous to the function can.
  • the screw terminal known from DE 4 400 571 A1 also includes in a further complicating manner separate from the cage walls Guide means are provided for the pressure piece, as is also the case in generic terms deviating screw terminals (DE 2 262 728 C2) is the case.
  • a screw terminal is used in the genus DE-OS 23 57 091 indicated.
  • a screw terminal specified which is characterized by a in a threaded section of a screw terminal cage characterized rotatably arranged clamping screw, its longitudinal axis essentially parallel to the direction of insertion of a clampable in the screw terminal Head is arranged.
  • the clamping screw acts on a clamping element when turning with a clamping surface and a pressure surface arranged at an angle to it, which itself against an abutment arranged on the side of the clamping screw axis, whereby a displacement of the pressure surface by turning the clamping screw of the clamping element results from a tilting of the clamping element becomes.
  • This tilting of the clamping element counteracts the clamping surface pressed the conductor to be clamped and this in the screw terminal as intended fixed.
  • this screw terminal can the clamping element by a spiral spring against the entire path Clamp screw must be pressed and thus when the screw clamp is released from the spiral spring can be moved back into an unloaded position.
  • This screw clamp shows besides manufacturing problems regarding the pre-assembly separately from a housing that changes depending on the application in particular the problem on that by the shape of the pressure piece and the power transmission the clamping effect of this screw terminal by means of a tilting movement cannot meet all requirements.
  • Conductor essentially clamps the conductor through the pressure piece parallel to the conductor surface, which ensures a good clamping effect due to large contact areas be generated between the pressure piece and the conductor.
  • conductors of different diameters it depends on the design the screw terminal to more or less only point contacts between the pressure piece and the conductors.
  • the L-shaped pressure piece predominantly loaded on bending, because of the spatial arrangement of Clamping screw, thrust piece and conductor deflect the force around the pivot point of the Pressure piece must be done.
  • the present invention has for its object a screw terminal Generic type to create a simple with good functional reliability has a constructive structure, is easy to assemble and has a secure deformation properties and clamping position of the pressure piece within the screw clamp and conductor diameter has an independent clamping effect.
  • the solution according to the invention consists essentially in that the pressure piece by rotating the in a threaded section of the cage rotatably arranged Clamping screw along the longitudinal axis of the clamping screw is linearly displaceable, and that the pressure piece at the free end of the clamping screw by means of a helical spring supported on the pressure piece and on the cage entire path area of the pressure piece is kept pressed, and that the longitudinal axis the spring and the longitudinal axis of the clamping screw are offset from one another.
  • the particularly advantageous effect results above all from the very compact Construction of the pressure piece, within its outer dimensions essentially all for the clamping and the kinematic movement of the pressure piece required functional elements are arranged.
  • the clamping mechanism and the assignment of the pressure piece and the direction of movement of the pressure piece to the contact piece made sure that a uniformly good and safe for all conductor diameters
  • the conductor can be clamped within the screw terminal.
  • the construction is further simplified considerably in that the pressure piece an easy-to-produce die-cast part without any processing such as thread cutting or the like.
  • connection elements can be in any Socket or pin headers, PCB terminals, feed-through terminals and the like be used.
  • the longitudinal axis of the helical spring is particularly advantageously parallel to Longitudinal axis of the clamping screw arranged so that the coil spring exclusively is subjected to pressure when the pressure piece is moved by means of the clamping screw is.
  • the cage is in itself known manner designed as a bent sheet metal part. The thread section is through two overlapping temples of the cage are formed. The thread is therefore more advantageous Way self-locking.
  • the spring is opposite the conductor receiving space kept inaccessible so that it is impossible that one too far inserted conductor contact the spring and change its position or even damage it can.
  • protective ribs are used for this provided on the pressure piece and / or on the cage, for the free spaces during the relative movement are provided between the pressure piece and the cage.
  • the screw terminal has a clamping screw 1, one Cage 2 and a pressure piece 3.
  • the cage 2 is in the illustrated embodiment as Sheet metal bent part formed that an upper boundary wall 4, side walls 5 and lower, overlapping boundary walls oriented obliquely to the axis of the clamping screw 1 6 has.
  • the narrow side walls of the cage 2 are on one Side adjacent to the upper boundary wall 4 by overlapping brackets 7 formed, in which the thread 8 is located, into which the clamping screw 1 is screwed can be.
  • By forming the thread in overlapping Ironing is self-locking. Below this bracket 7 is this narrow side wall open and thereby forms the access opening to that of the cage 2 defined conductor receiving space 9.
  • the opposite narrow side wall is in the upper area by a bracket 10 formed.
  • a boundary wall that overlaps to the lower one 6 reaching opening through which a contact piece 11 in the conductor receiving space 9 of the cage 2 can be inserted, which then in Oblique to the axis of the clamping screw 1 on the lower overlapping boundary walls 6 of the cage 2 rests.
  • the contact piece 11 is formed in the form of a busbar, which on an outside of the cage 2 remaining bend 12, for example a double flat spring contact 13 wears.
  • the pressure piece 3 is movably arranged in the cage. It is at the free end the clamping screw 1 is only positively pressed by a coil spring 14 kept, which is dimensioned so that the pressure in the entire pathway area of the pressure piece 3 between the maximum open position (Fig. 1) and the maximum closed position (Fig. 3) is maintained.
  • the coil spring 14 is based on the one hand on the cage 2, namely here on its bracket 10, and on the other hand on the pressure piece 3.
  • a receiving channel in the pressure piece 3 is expedient for this 15 provided in which the coil spring can enter.
  • the bracket 10 overlaps expediently with a bend which is approximately rounded in accordance with the spring contour 16 the other end of the spring.
  • the longitudinal axis of the coil spring 14 and the longitudinal axis of the clamping screw 1 are offset from each other.
  • the longitudinal axis of the coil spring 14 and thus the The receiving channel 15 is closer to the upper boundary wall 4 of the cage 2 and this creates a permanent tilting moment that the pressure piece 3 at its Movement slightly pressed against the upper boundary wall 4 of the cage 2 and thus using the existing wall for guiding the pressure piece 3 ensures its movement.
  • the Coil spring 14 is kept inaccessible relative to the conductor receiving space 9.
  • the rounded bend serves on the one hand for this 16 for receiving one end of the coil spring 14 and in cooperation thus a protective rib 18 provided on the pressure piece 3, which is so protruding far that they are in the maximum open position (Fig. 1) its free end extends up to the free end of the rounded bend 16.
  • the lower rounded area of the bend is the possibility to move 16 and the upper side of the protective rib 18 held apart from each other, so that they can move past each other freely without contact.
  • the arrangement described above forms a self-contained, conceivable easy to assemble connector. It is sufficient to insert the spring 14 into the cage 2 and insert the pressure piece 3 and the clamping screw 1 in the threaded section 8 screw in.
  • the contact piece 11 can also be inserted without problems become.
  • the arrangement can then be fully assembled in the receiving space of an insulating material housing 19 are inserted, corresponding to the reception of the affected Parts is contoured.
  • the exemplary embodiment shown is an insulating material housing a component of a socket strip. It can also be that Housing of PCB terminals, feed-through terminals and other electrical Act connectors.
  • an insertion funnel 21 is formed, through which an electrical to be clamped Conductor inserted into the conductor receiving space 9 inside the cage 2 can be.
  • the inserted conductor is in the closed position of the screw terminal clamped by the pressure piece 3 on the contact piece 11 by means of the clamping screw 1.

Landscapes

  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Discharge Heating (AREA)
  • Insulated Conductors (AREA)

Claims (9)

  1. Douille de contact à vis pour conducteurs électriques, avec une cage (2) et une vis de serrage (1) disposée dans la cage avec possibilité de rotation et avec un organe d'appui (3) disposé de manière mobile dans la cage, qui peut être déplacé au moyen d'une vis de serrage (1) vers un organe de contact (11) disposé en oblique par rapport à l'axe de la vis de serrage dans un logement de conducteurs (9) défini par la cage (2), caractérisée en ce que l'organe d'appui (3) peut être déplacé en translation linéaire par une rotation de la vis de serrage disposée dans une partie filetée (8) de la cage (2) le long de l'axe longitudinal de la vis de serrage (1), l'organe d'appui (3) étant maintenu appuyé sur l'extrémité libre de la vis de serrage (1) sur tout son trajet au moyen d'un ressort à boudin (14) s'appuyant sur l'organe d'appui (3) et la cage (2), l'axe longitudinal du ressort (14) et celui de la vis de serrage (1) étant décalés l'un par rapport à l'autre.
  2. Douille de contact à vis selon la revendication 1, caractérisée en ce que l'axe longitudinal du ressort à boudin (4) est parallèle à l'axe longitudinal de la vis de serrage (1).
  3. Douille de contact à vis selon l'une quelconque des revendications précédentes, caractérisée en ce qu'il est prévu dans l'organe d'appui (3) un canal d'insertion (15) recevant le ressort à boudin (14) et un creux (17) recevant l'extrémité libre de la vis de serrage (1).
  4. Douille de contact à vis selon l'une quelconque des revendications précédentes, caractérisée en ce que la cage (2) est conçue comme une pièce pliée en tôle et la partie filetée (8) est formée de deux étriers (7) qui se chevauchent.
  5. Douille de contact à vis selon l'une quelconque des revendications précédentes, caractérisée en ce que le ressort à boudin (14) est inaccessible à partir du logement de conducteurs (9) de la cage (2).
  6. Douille de contact à vis selon la revendication 5, caractérisée en ce que des organes de protection (16, 18) sont formés sur l'organe d'appui (3) et/ou la cage (2).
  7. Douille de contact à vis selon l'une quelconque des revendications précédentes, caractérisée en ce qu'une extrémité du ressort à boudin s'appuie sur un étrier (10) de la cage (2) qui possède un pli arrondi (16) entourant l'extrémité du ressort de compression (14) sur une longueur prédéterminée.
  8. Douille de contact à vis selon les revendications 6 et 7, caractérisée en ce qu'il est prévu sur l'organe d'appui (3) une nervure de protection (18) en saillie qui s'étend jusqu'à l'extrémité libre du pli arrondi (16) de l'étrier (10) lorsque la douille de contact se trouve dans sa position d'ouverture maximale, le pli arrondi (16) et la nervure de protection (18) étant suffisamment écartés l'un de l'autre pour pouvoir se déplacer librement l'un par rapport à l'autre lors du déplacement de l'organe d'appui (3) lorsque la douille de contact à vis se trouve dans la position fermée.
  9. Douille de contact à vis selon la revendication 8, caractérisée en ce qu'un espace (20) est ménagé dans un boítier en matériau isolant (19) enveloppant pour recevoir l'extrémité libre de la nervure de protection (18) lorsque la douille de contact à vis se trouve dans la position fermée.
EP96103713A 1995-04-01 1996-03-09 Douille de contact à vis Expired - Lifetime EP0735614B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19512337A DE19512337A1 (de) 1995-04-01 1995-04-01 Schraubklemme für elektrische Leiter
DE19512337 1995-04-01

Publications (3)

Publication Number Publication Date
EP0735614A2 EP0735614A2 (fr) 1996-10-02
EP0735614A3 EP0735614A3 (fr) 1998-02-11
EP0735614B1 true EP0735614B1 (fr) 2001-10-10

Family

ID=7758591

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96103713A Expired - Lifetime EP0735614B1 (fr) 1995-04-01 1996-03-09 Douille de contact à vis

Country Status (3)

Country Link
EP (1) EP0735614B1 (fr)
AT (1) ATE206846T1 (fr)
DE (2) DE19512337A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101641831B (zh) * 2007-04-03 2012-07-25 西门子公司 导电体尤其是带有线鼻子的导电体的连接夹紧装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008017501U1 (de) * 2008-02-20 2009-10-01 Phoenix Contact Gmbh & Co. Kg Elektrische Anschlusseinrichtung
DE102009007073B4 (de) 2009-02-02 2014-12-18 Siemens Aktiengesellschaft Elektrisch leitender Schraubanschluss
DE102021108317A1 (de) 2021-04-01 2022-10-06 Phoenix Contact Gmbh & Co. Kg Klemme zum Anschluss eines elektrischen Leiters
DE102022205610A1 (de) 2022-06-01 2023-12-07 Siemens Aktiengesellschaft Untersteckschutzteil

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1100123B (de) * 1955-01-07 1961-02-23 Dr Friedrich Wieland Klemme fuer elektrische Leiter
DE6942001U (de) * 1969-10-27 1970-02-05 Weidmueller Kg C Schraubklemme fuer elektrische leitungen
DE2107218C3 (de) * 1971-02-16 1979-02-22 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verwendung einer Kastenklemme und Kastenklemme hierfür
BE792897A (fr) * 1971-12-31 1973-06-18 Alsthom Cgee Borne electrique a serrage par vis a raccordement axial
FR2574598B1 (fr) * 1984-12-12 1987-01-02 Alsthom Cgee Connexion electrique vissee
DE3633854A1 (de) * 1986-10-04 1988-04-07 Bbc Brown Boveri & Cie Schraubklemme
US5292263A (en) * 1993-01-12 1994-03-08 The Whitaker Corporation Electrical connector
DE4328928A1 (de) * 1993-08-27 1995-03-02 Contact Gmbh Kontakt- und Klemmvorrichtung für elektrische Steckverbinder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101641831B (zh) * 2007-04-03 2012-07-25 西门子公司 导电体尤其是带有线鼻子的导电体的连接夹紧装置

Also Published As

Publication number Publication date
DE19512337A1 (de) 1996-10-02
EP0735614A2 (fr) 1996-10-02
EP0735614A3 (fr) 1998-02-11
ATE206846T1 (de) 2001-10-15
DE59607856D1 (de) 2001-11-15

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