EP0707745B1 - Borne a vis comportant un element de serrage en u - Google Patents

Borne a vis comportant un element de serrage en u Download PDF

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Publication number
EP0707745B1
EP0707745B1 EP94918380A EP94918380A EP0707745B1 EP 0707745 B1 EP0707745 B1 EP 0707745B1 EP 94918380 A EP94918380 A EP 94918380A EP 94918380 A EP94918380 A EP 94918380A EP 0707745 B1 EP0707745 B1 EP 0707745B1
Authority
EP
European Patent Office
Prior art keywords
screw
end part
terminal
limb
inner end
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
EP94918380A
Other languages
German (de)
English (en)
Other versions
EP0707745A1 (fr
Inventor
Hans-Peter Rottmann
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.)
Hirschmann Electronics GmbH and Co KG
Original Assignee
Hirschmann Richard Co GmbH
Hirschmann Electronics 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 Hirschmann Richard Co GmbH, Hirschmann Electronics GmbH and Co KG filed Critical Hirschmann Richard Co GmbH
Publication of EP0707745A1 publication Critical patent/EP0707745A1/fr
Application granted granted Critical
Publication of EP0707745B1 publication Critical patent/EP0707745B1/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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/112—Resilient sockets forked sockets having two legs
    • 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

Definitions

  • the invention relates to a screw terminal according to the preamble of claim 1.
  • Such a screw terminal for connecting electrical conductors is known from European patent 0 023 234 and is used there, for example, in connection with an integrally molded socket as a contact element for a cable connector.
  • No threads can be inserted into the thin spring plate required for such screw terminals, and the required tightening torque cannot be achieved with a simple hole for receiving the clamping screw. Therefore, a sufficiently thick nut (cross nut) is provided between the legs, which is held with lateral shoulders in recesses of the two legs.
  • the clear leg spacing can be reduced to the diameter of the threaded bore and thus a minimum width of the screw clamp can be achieved, the diameter of the screw head advantageously corresponding to at most this width.
  • the legs can be pressed apart by more than the material thickness of the sheet metal, that is, to the extent that the cross nut is at least pulled out of a recess and thus no more secure clamping contact is guaranteed. Often the screw clamp is deformed in this process so that it is unusable.
  • the object of the invention is therefore to further develop a screw clamp of the type mentioned in the simplest and most cost-effective manner such that the clamp height is reduced in the direction of the screw axis with at least the same stability and the spreading of the clamp legs is reliably prevented even with high clamping forces.
  • the aligned screw bushings of the inner and outer end part of the two legs which suitably correspond in the outer diameter of the threaded shaft of the clamping screw or are only slightly larger, prevent lateral deflection of the legs at least in the region of the recesses adjacent to the end parts in a simple and effective manner , so that even with very large clamping forces, the mechanical stability of the screw terminal is permanently guaranteed.
  • the extensions could also be molded onto the inner end part and provided for insertion into recesses in the outer end part. In such an embodiment, however, the lugs protruding beyond the outer end part would increase the terminal height again.
  • the sophisticated arrangement in which the lugs protrude into the free space between the two legs at their longitudinal ends, has the advantage that the minimum clamp height is maintained.
  • a nose protruding laterally on each extension is sufficient. A particularly high holding force and an exactly parallel position of the two end parts to one another is achieved with extremely little additional material by means of noses (double nose) adjoining the neck on both sides.
  • the clear distance between the legs corresponds to the outside diameter of the threaded shaft of the clamping screw.
  • a further improvement in the stability of the bending web by widening is specified in claim 4. Due to the arrangement and dimensioning of the indentation, it bends with the same area as the inner end part and thus widens the bending web by the material thickness of the sheet metal part without protruding laterally beyond the second leg, so that the minimum width of the U-shaped clamping body is retained.
  • the bending bar which is widened in an extremely simple and cost-effective manner, can withstand the mechanical loads that occur with the strongest clamping forces.
  • the sheet metal part is free of additional costs for series production e.g. suitable in the stamping process because no undefined thin bars or tips can arise.
  • the crescent-shaped claws formed by slightly shortening the inner end part and comprising the screw shaft are relatively robust and, in particular in the case of a clamp design according to claim 2, are also reliably protected against opening under the action of high clamping forces.
  • the clamping bush 1 consists of a screw clamp 2 according to the invention and two fork springs 3 integrally molded thereon, forming a socket contact.
  • the screw clamp 2 has a U-shaped sheet metal part 4 made of spring sheet metal with two legs 5, 6, each of which has a stamped-bending process Recess 7 is provided in the opposite shoulders 8 of a cross nut 9 with a central threaded bore 10 for receiving a clamping screw 11 so far that they are flush with the outer wall of the legs 5, 6. This not only ensures a stable mounting of the cross nut, but also gives the possibility to adjust the clear distance between the legs 5, 6 to the screw diameter and thus to minimize the terminal width.
  • An end part 12 of the first leg 5 is bent 90 ° around a first bending edge 13 towards the second leg 6, its end edge 14 is flush with the outer wall of the second leg 6.
  • An end part 15 of the second leg 6 is around the first leg 5 a second bending edge 16 also bent by 90 ° and arranged between the outer end part 12 and the cross nut 9.
  • the outer end part 12 lies on the inner end part 15 and this in turn rests on the cross nut 9, so that a low clamp height is achieved with high stability.
  • Both end parts 12, 15 each carry a central bushing 17, 18 for the clamping screw 11.
  • the bushing 17 of the outer end part 12 of the first leg 15 is circular, the circular diameter corresponding to the outer diameter of the threaded shaft 19 of the clamping screw 11.
  • the passage 18 of the inner end part 15 of the second leg 6 is also circular in a central region with the diameter mentioned; on the area facing the bending edge 16, the circle is reduced by a segment whose chord 20 parallel to the bending edge 16 is at a distance from the center of the circle M corresponding to the core radius of the threaded shaft 19.
  • the edge 16 of the recess 7 facing the bending edge 16 has an indentation 22 corresponding to the material thickness of the sheet metal part 4, so that a relatively wide and thus stable web 23 is formed between the recess 7 and the bushing 18, which breaks even at high clamping forces the sheet metal part 4 effectively prevented at this point.
  • the web 23 engages with the specified dimension in the thread of the clamping screw 11 and thereby forms a screw lock at the same time.
  • the mechanical strength of the screw terminal 2 is further increased by projections 24, 25 which protrude in one piece from the outer end part 12 of the leg 5 and which - bent by approximately 90 ° - each penetrate a corresponding recess 27 of the inner end part 15 with their neck part 26 and with one Single nose 28 or double nose 29 running transversely to the neck part 26 engage behind the inner edge regions of the recesses 27 without projecting beyond the screw terminal 2.
  • the diameter of the screw head 30 is dimensioned with a size corresponding to the clamp width so that it does not enlarge the clamp dimensions and can nevertheless convert the full tightening torque into clamping force.
  • the distance of the center M of the passage 18 of the inner end part 15 from its free end edge 31 is smaller than the circular diameter, so that a circular opening of approximately 2/3 of the circular diameter is formed, through which two crescent-shaped claws 32 are formed, which encompass the screw.
  • This version is moreover manageable in terms of production technology than a bushing which affects the end edge when the diameter of the threaded shaft 19 is equal to the clear leg distance.
  • clamping bushes 1 Four of the clamping bushes 1 described above are arranged in contact chambers 33 of a contact carrier 34 of a miniature plug-in coupling.
  • the stripped wire ends 35 of the associated strands 36 are each inserted between the cross nut 9 and the curved bottom part 37 of the U-shaped sheet metal part 4 and are clamped by the clamping screw 11 screwed in transversely to the direction of insertion.
  • the screw head 30 lies in an adapted bore of a wall 38 of the contact carrier 34 which bears against the outer surface of the end part 12 of the first leg 5, as a result of which the clamping bush 1 is also held in the contact chamber 33.
  • the contact carrier 34 For insertion of the contact pins of a mating connector, not shown, 33 slots 39 are provided in the extension of the contact chambers, which extend to the end face 40 of the contact carrier 34.
  • the contact carrier 34 has a central bore 41.

Landscapes

  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Clamps And Clips (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Insulators (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Processing Of Terminals (AREA)

Claims (5)

  1. Borne à vis (2) pour mettre en contact avec serrage des conducteurs électriques (36) avec un corps de serrage (4) constitué d'une pièce en tôle en forme de U, entre les branches (5, 6) duquel est prévu un écrou en croix (9), disposé transversalement par rapport à ses branches, maintenu, par des épaulements latéraux, dans des évidements (7) des branches, afin de supporter et de guider la tige filetée d'une vis de serrage (11), une partie d'extrémité (12) d'une première branche (5) de la pièce en tôle en U étant repliée de 90° par rapport à la deuxième branche (6), en reposant, à titre de partie d'extrémité extérieure sur celle-ci et présentant un perçage central (17) afin de faire passer la tige filetée de la vis de serrage (11), caractérisé en ce qu'une partie d'extrémité (15) de la deuxième branche (6) est repliée de 90° par rapport à la première branche (5), autour d'une arête de pliage (16), en appuyant à plat, à titre de partie d'extrémité inférieure(15), sur la partie d'extrémité extérieure (12) et présentant un passage (18), aligné vis-à-vis du perçage (17) de la partie d'extrémité extérieure (12), pour laisser passer la tige filetée (19) de la vis de serrage (11).
  2. Vis de serrage selon la revendication 1, caractérisé en ce que la partie d'extrémité extérieure (12) de la première branche (5) porte sur les côtés s'étendant entre les branches (5, 6) un prolongement (24, 25), réalisé de préférence d'une seule pièce avec un col (26) et au moins un ergot (28, 29) en faisant saillie latéralement, et en ce que les prolongements (24, 25), repliés de 90° lorsque la bande à vis (2) est montée, traversent par leurs cols (26) des évidements (27) correspondants ménagés dans la partie d'extrémité inférieure (15) et saisissent par l'arrière, à l'aide des ergots (28, 29), des parties de bordures internes des évidements (27).
  3. Borne à vis selon l'une des revendications 1 ou 2, caractérisé en ce que le passage (18) de la partie d'extrémité inférieure (15) à une section transversale en forme en forme de segment de surface de cercle, dont la corde (20) s'étend parallèlement à l'arête de flexion de pliage (16) et présente un espacement au moins à peu près correspondant au rayon du noyau de la tige filetée (19), vis-à-vis du centre M du cercle.
  4. Borne à vis selon l'une des revendications 1 à 3, caractérisé en ce que l'arête de bordure (21), tournée vers l'arête de pliage (16), de l'évidement (7) de la deuxième branche (6) présente une dentelure (22), dont la profondeur correspond à l'espacement vis-à-vis de l'arête de pliage (16) et à l'épaisseur de matériau de la partie en tôle (4).
  5. Borne à vis selon l'une des revendications 1 à 4, caractérisé en ce que le passage (18) de la partie d'extrémité inférieure (15) à une section transversale qui est un cercle non fermé, pour lequel l'espacement entre le centre M et l'arête frontale (31), parallèle à la paroi de branche, de la partie d'extrémité inférieure (15) est inférieur à son rayon, correspondant au diamètre extérieur de la tige filetée (19) de la vis de serrage (11).
EP94918380A 1993-07-08 1994-05-26 Borne a vis comportant un element de serrage en u Expired - Lifetime EP0707745B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4322790 1993-07-08
DE4322790A DE4322790C2 (de) 1993-07-08 1993-07-08 Schraubklemme mit u-förmigem Klemmkörper
PCT/EP1994/001716 WO1995002262A1 (fr) 1993-07-08 1994-05-26 Borne a vis comportant un element de serrage en u

Publications (2)

Publication Number Publication Date
EP0707745A1 EP0707745A1 (fr) 1996-04-24
EP0707745B1 true EP0707745B1 (fr) 1997-08-27

Family

ID=6492284

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94918380A Expired - Lifetime EP0707745B1 (fr) 1993-07-08 1994-05-26 Borne a vis comportant un element de serrage en u

Country Status (6)

Country Link
US (1) US5771983A (fr)
EP (1) EP0707745B1 (fr)
JP (1) JPH09501538A (fr)
AT (1) ATE157487T1 (fr)
DE (2) DE4322790C2 (fr)
WO (1) WO1995002262A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19801331C2 (de) * 1998-01-16 2003-09-25 Hayo Joerg Modulares Mehrfach-Stern-Schraubklemmen-System
US6752368B2 (en) 2002-10-30 2004-06-22 Alcoa Inc. Clamping device and method for grasping a workpiece
DE102005055598A1 (de) * 2005-11-19 2007-05-31 Phoenix Contact Gmbh & Co. Kg Schraubklemme und Reihenklemme
DE102006038253A1 (de) * 2006-08-16 2008-02-21 Hirschmann Automation And Control Gmbh Elektrische Steckverbindung
JP2011113680A (ja) * 2009-11-24 2011-06-09 Panasonic Electric Works Co Ltd ねじ端子及びこれを備えるコンセント
SE536980C2 (sv) * 2013-03-04 2014-11-25 Scania Cv Ab Ledningssko
US9293841B2 (en) * 2013-07-10 2016-03-22 Panduit Corp. Mechanical lug with dovetail interlock feature
FR3090225B1 (fr) * 2018-12-13 2020-11-27 Schneider Electric Ind Sas Borne a compensation de serrage en particulier pour un appareil de protection electrique.

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1107755B (de) * 1957-04-20 1961-05-31 Wieland Elek Sche Ind G M B H Klemme zum Anschluss eines Leiters an eine Stromschiene
DE1808756U (de) * 1960-02-01 1960-03-31 C A Weidmueller K G Elektrische leitungsklemme, insbesondere zugbuegelklemme.
CH376976A (it) * 1960-06-22 1964-04-30 Omr Officine Meccaniche Riunit Morsetto per l'allacciamento di conduttori ad apparecchi elettrici
DE1835455U (de) * 1961-04-29 1961-07-27 Wieland Elek Sche Ind G M B H Verbindungsklemme.
FR1566270A (fr) * 1968-01-18 1969-05-09
FR2036307A5 (fr) * 1969-03-10 1970-12-24 Electr Entreprises
GB1312922A (en) * 1969-08-26 1973-04-11 Lucas Industries Ltd Electrical terminals
CH590567A5 (fr) * 1975-10-09 1977-08-15 Landis & Gyr Ag
DE7921662U1 (de) * 1979-07-28 1979-10-25 Richard Hirschmann Radiotechnisches Werk, 7300 Esslingen Schraubklemme mit U-förmigem Klemmkörper
FR2503939A1 (fr) * 1981-04-14 1982-10-15 Alsthom Cgee Borne de connexion pour conducteur electrique isole
DE8402382U1 (de) * 1984-01-27 1984-04-26 Siemens AG, 1000 Berlin und 8000 München Anschluß-Klemme
EP0337236B1 (fr) * 1988-04-15 1993-12-22 Siemens Aktiengesellschaft Borne électrique

Also Published As

Publication number Publication date
US5771983A (en) 1998-06-30
DE4322790C2 (de) 1996-03-07
JPH09501538A (ja) 1997-02-10
DE4322790A1 (de) 1995-01-19
DE59403886D1 (de) 1997-10-02
EP0707745A1 (fr) 1996-04-24
WO1995002262A1 (fr) 1995-01-19
ATE157487T1 (de) 1997-09-15

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