EP0300472B1 - Kontaktklemme - Google Patents

Kontaktklemme Download PDF

Info

Publication number
EP0300472B1
EP0300472B1 EP88111727A EP88111727A EP0300472B1 EP 0300472 B1 EP0300472 B1 EP 0300472B1 EP 88111727 A EP88111727 A EP 88111727A EP 88111727 A EP88111727 A EP 88111727A EP 0300472 B1 EP0300472 B1 EP 0300472B1
Authority
EP
European Patent Office
Prior art keywords
contact
clamp
contact terminal
contact part
joint
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
EP88111727A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0300472A3 (en
EP0300472A2 (de
Inventor
Horst Klimach
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.)
Bessey and Sohn GmbH and Co KG
Original Assignee
Bessey and Sohn 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 Bessey and Sohn GmbH and Co KG filed Critical Bessey and Sohn GmbH and Co KG
Priority to AT88111727T priority Critical patent/ATE100243T1/de
Publication of EP0300472A2 publication Critical patent/EP0300472A2/de
Publication of EP0300472A3 publication Critical patent/EP0300472A3/de
Application granted granted Critical
Publication of EP0300472B1 publication Critical patent/EP0300472B1/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
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/22—End pieces terminating in a spring clip
    • H01R11/24—End pieces terminating in a spring clip with gripping jaws, e.g. crocodile clip

Definitions

  • the invention relates to a contact clamp with a clamp and at least one contact part held on a clamp bracket and having a contact surface, the contact part having a cable connection connected to a cable.
  • Such a contact clamp is already known from FR-A-917 438, which carries on each clamp bracket a contact part which is firmly connected to the latter and the latter has a spherical cap-shaped surface.
  • a contact part is necessary to ensure reliable electrical contact with a jammed object.
  • the cable is passed through an opening in one of the clamp brackets to the contact part.
  • both clamp brackets carry a contact part which is firmly held on the latter, each having a contact surface which is convexly curved in the direction of the other contact part.
  • contact clamps have the disadvantage that they are very complex to manufacture and that, due to the curved contact surfaces, generally only a linear contact of each contact part on the clamped object can be produced, so that despite two contact parts which are in contact with and connected to the object there is a relatively high contact resistance between these and the pinched object.
  • the invention is therefore based on the object of improving a contact clamp of the generic type in such a way that it is easy to produce on the one hand and on the other hand ensures good electrical contact with the object to be clamped.
  • a contact clamp of the type described in the introduction in that the contact part is held on the clamp bracket by means of a joint and in that the cable runs directly to the cable connection independently of the clamp bracket.
  • the contact part is movable relative to the clamp bracket and therefore, regardless of the thickness of the object to be clamped in each case, enables the contact surface of this contact part to lie optimally against a surface of this object and thus produce a more than linear contact.
  • the joint can be moved in all possible directions.
  • the joint can be pivoted at least about an axis of rotation which is perpendicular to a movement plane of the clamp bracket. This ensures that the closing movement of the two clamp brackets, or their jaw parts, in the plane of movement does not lead to an uneven contact of the contact part on the surface of the object to be clamped in each case, but rather that the contact part with its contact surface does not interfere with the closing movement of the Clip bracket can apply to the surface of the object.
  • the contact part has a support piece that supports the contact surface.
  • the arrangement of the joint relative to the support piece can be done in various ways. Optimal loading of the support piece is possible, however, if the joint is arranged on a side of the support piece facing away from the contact surfaces, so that it always lies as fully as possible against the surface of the object to be clamped.
  • the contact surface itself is to be designed in detail. It is known from the prior art to design the contact surfaces in the form of a spherical cap. However, since in the solution according to the invention the contact part can optimally adapt to the surface of the object, it is advantageous if the contact surface is flat in order to produce a contact surface that is as large as possible and thus as low a contact resistance as possible between the contact part and the object to be clamped .
  • the contact surface has a corrugation, since on the one hand this provides protection against slipping off and on the other hand it ensures better contact resistance by digging the grooves into the surface of the object .
  • a particularly simple technical implementation of the contact clamp according to the invention provides that the joint is formed by a tab of a clamp bracket which engages in a slot in the contact part.
  • the contact part has a fastening tab extending from the support piece for the cable connection.
  • FIG. 10 shows in detail a partially cut contact terminal according to the invention, designated as a whole by 10, which has a spring clip 12, which in turn is constructed from a first clip bracket 14 and a second clip bracket 16.
  • the two clamp brackets 14 and 16 are mounted with their overlapping bearing eyes 20 and 22, which are penetrated by an axis 18, and can be tilted together about the axis 18.
  • a spiral spreading spring 24 is arranged around a center piece of the axis 18, which arms 26 and 28 expands the clamp brackets 14 and 16 in the area of their grip parts 30 and 32, so that the clamp brackets 14 and 16 in the area of their jaw parts 34 and 36 are directed towards a closed position.
  • the two clamp brackets 14 and 16 are thus movable about the axis 18 in the drawing plane of the figure.
  • the two clamp brackets 14 and 16 are made of material which is essentially U-shaped in cross-section.
  • a contact part designated as a whole by 38, is articulated parallel to the axis 18 on the clamp bracket 14 or on its jaw part 34.
  • This articulated mounting of the contact part 38 takes place by means of a tab 40 which extends through a slot 42 with its longitudinal axis substantially perpendicular to the plane of the drawing and thus transversely to the tab 40 and with its front end 44 to the outside, that is to say from the opposite one
  • the jaw part 36 is bent away so that the contact part 38 with the slot 42 cannot slide over the tab 40.
  • the contact part 38 is constructed in detail from a support piece 46 which is arranged on a side of the slot 42 facing the opposite jaw part 36 and which has a contact surface 48 on its side facing the opposite jaw part 36.
  • the contact part 38 also has a fastening tab 50 which extends on the side of the slot 42 opposite the support piece 46, which is preferably of an angular shape and with its area carrying a screw fastening 52 for a power cable 54 parallel to the support piece 46 toward the rear in the direction of the clamp bracket 14 extends.
  • the slot is arranged off-center of the support piece 46, preferably in its front area facing away from the clamp bracket 14.
  • the jaw part 36 opposite the contact surface 48 is also provided with a pressure surface 56 arched parallel to the axis 18 and thus also parallel to the hinge axis of the contact part 38, so that an object can be clamped between the latter and the contact surface 48.
  • the pressure surface 56 can also be designed like a ball cap.
  • the contact surface 48 is expediently provided with grooves 58 which ensure good electrical contact between the contact surface 48 of the support piece 46 and the clamped object.
  • the solution according to the invention now enables the support piece 46 to rotate relative to the jaw part 34 according to a surface of the object to be clamped about an axis 60 which is perpendicular to the plane of movement of the clamp bracket 14 or 16, so that the support piece 46 optimally contacts the contact surface 48 on the respective object and thus a good electrical contact with it is guaranteed.
  • the power cable 54 runs independently of the clamp brackets 14, 16 to a power source and can therefore not exert any tilting moments on the clamp bracket itself.

Landscapes

  • Multi-Conductor Connections (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Clamps And Clips (AREA)
  • Lead Frames For Integrated Circuits (AREA)
EP88111727A 1987-07-22 1988-07-21 Kontaktklemme Expired - Lifetime EP0300472B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88111727T ATE100243T1 (de) 1987-07-22 1988-07-21 Kontaktklemme.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3724237 1987-07-22
DE19873724237 DE3724237A1 (de) 1987-07-22 1987-07-22 Kontaktklemme

Publications (3)

Publication Number Publication Date
EP0300472A2 EP0300472A2 (de) 1989-01-25
EP0300472A3 EP0300472A3 (en) 1990-05-23
EP0300472B1 true EP0300472B1 (de) 1994-01-12

Family

ID=6332102

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88111727A Expired - Lifetime EP0300472B1 (de) 1987-07-22 1988-07-21 Kontaktklemme

Country Status (3)

Country Link
EP (1) EP0300472B1 (enrdf_load_stackoverflow)
AT (1) ATE100243T1 (enrdf_load_stackoverflow)
DE (2) DE3724237A1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013211058B3 (de) * 2013-06-13 2014-10-23 Lisa Dräxlmaier GmbH Stromkontaktzange für eine Vier-Leiter-Messung im Bereich Hochvolt und Hochstrom

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10222265B4 (de) 2002-05-18 2013-02-07 Preh Gmbh Leitkleberverbindung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2183680A (en) * 1938-04-12 1939-12-19 William T Kahliff Clamp for grounding electrical equipment
FR917438A (fr) * 1945-11-15 1947-01-07 Pince de connexion pour charge de batteries d'accumulateurs et tous autres usages
US3737832A (en) * 1971-09-27 1973-06-05 G Anderson Electrical clamp
FR2452805A1 (fr) * 1979-03-27 1980-10-24 Beauverger Andre Pince de masse pour poste de soudure et chargeur de batterie
US4514033A (en) * 1983-10-24 1985-04-30 Matthews Charles G Arc welding clamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013211058B3 (de) * 2013-06-13 2014-10-23 Lisa Dräxlmaier GmbH Stromkontaktzange für eine Vier-Leiter-Messung im Bereich Hochvolt und Hochstrom

Also Published As

Publication number Publication date
DE3724237A1 (de) 1989-02-02
DE3724237C2 (enrdf_load_stackoverflow) 1990-08-23
ATE100243T1 (de) 1994-01-15
DE3887022D1 (de) 1994-02-24
EP0300472A3 (en) 1990-05-23
EP0300472A2 (de) 1989-01-25

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