EP3264533B1 - Disque perfore et son utilisation pour des rails electriques relies entre eux, constitues de differents materiaux - Google Patents

Disque perfore et son utilisation pour des rails electriques relies entre eux, constitues de differents materiaux Download PDF

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Publication number
EP3264533B1
EP3264533B1 EP16176671.2A EP16176671A EP3264533B1 EP 3264533 B1 EP3264533 B1 EP 3264533B1 EP 16176671 A EP16176671 A EP 16176671A EP 3264533 B1 EP3264533 B1 EP 3264533B1
Authority
EP
European Patent Office
Prior art keywords
perforated disk
perforated
aluminum
elevations
disk
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.)
Active
Application number
EP16176671.2A
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German (de)
English (en)
Other versions
EP3264533A1 (fr
Inventor
Christopher Pnischeck
Hartmut Geyssel
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.)
Jean Mueller Elektrotechnische Fabrik GmbH
Original Assignee
Jean Mueller Elektrotechnische Fabrik GmbH
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 Jean Mueller Elektrotechnische Fabrik GmbH filed Critical Jean Mueller Elektrotechnische Fabrik GmbH
Priority to EP16176671.2A priority Critical patent/EP3264533B1/fr
Priority to PCT/EP2017/065693 priority patent/WO2018001954A1/fr
Publication of EP3264533A1 publication Critical patent/EP3264533A1/fr
Application granted granted Critical
Publication of EP3264533B1 publication Critical patent/EP3264533B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01R4/58—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 characterised by the form or material of the contacting members
    • H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
    • 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
    • H01R4/304—Clamped connections, spring connections utilising a screw or nut clamping member having means for improving contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
    • H01R25/14—Rails or bus-bars constructed so that the counterparts can be connected thereto at any point along their length
    • H01R25/145—Details, e.g. end pieces or joints

Definitions

  • the invention relates to a perforated disc and their use as connecting plates between overlapping, interconnected busbars of different materials.
  • busbars In practice, applications are recorded, according to which bus bars are to be connected together in order to be able to transport electricity over these busbars. For cost reasons, it may happen that instead of the more conductive material copper or a copper alloy, the less conductive and less expensive material aluminum or an aluminum alloy is used.
  • a disadvantage is the use of busbars made of aluminum or an aluminum alloy that oxidizes aluminum under the influence of ambient air. An aluminum oxide layer forms on the surface of a busbar made of aluminum or an aluminum alloy, with the consequence that the contact resistance in the power line between the busbars of different materials increases.
  • An aluminum or aluminum alloy rail having an oxide layer must be pretreated, for example mechanically with a suitable brush, to remove the oxide layer. Subsequently, it is necessary to To lubricate busbar, so that an oxygen-tight connection is formed. Such a procedure is quite complex and is performed in practice only inadequately. The consequence is that in interconnected busbars due to the oxide layer of a bus bar made of aluminum or an aluminum alloy, the contact resistance increases and the connection fails in practice.
  • perforated disks between overlapping, interconnected busbars of different materials in particular the connection of an aluminum busbar or an aluminum alloy with a busbar made of copper or a copper alloy
  • a perforated disc the On opposite disc sides has major surfaces, wherein the perforated disc in the region of one, the first main surface made of aluminum or an aluminum alloy and in the region of the other, the second main surface made of copper or a copper alloy.
  • the main surfaces are arranged parallel to one another and the perforated disks each have a circular outer contour and a circular inner contour.
  • the perforated discs are made of aluminum or an aluminum alloy, which is understood to mean that they consist almost entirely thereof, because a relatively thin layer of copper or a copper alloy is applied to the base body made of aluminum or aluminum alloy.
  • the aluminum side of the perforated disc comes into contact with the aluminum busbar when connecting the two busbars, the copper side of the perforated disc in contact with the copper busbar.
  • Such a perforated disc can, for example, in a bar for NH fuses, as for example from the EP 2 546 856 A1 has become known, find use.
  • busbars of the bar which consist of copper or a copper alloy, to connect to busbars of a busbar system with interposition of perforated discs.
  • the busbars are made of aluminum or an aluminum alloy.
  • a contact element for producing an electrically conductive connection between two each having a planar contact surface having conductors, at least one of which consists of aluminum, with at least one projecting, pointed, penetrating into the adjacent conductor material part at least on the aluminum conductor facing side known.
  • the contact element is annular and it forms the projecting material part of at least one annular cutting edge.
  • the contact element consists of a hard aluminum, a galvanized hard copper or a galvanized hard copper alloy.
  • the arrangement of a conductive strip between overlapped interconnected bus bars is described.
  • the strip consists of copper, on the other side of aluminum.
  • a perforated disc is known as a central base element, wherein the perforated disc is provided for sealing purposes radially inwardly with a sealing ring and radially outwardly with a sealing ring. So that the sealing rings are firmly connected to the perforated disc, positive locking areas are provided in the perforated disc. These are recesses, namely inner recesses and outer recesses in the region of one main surface of the perforated disc, and inner recesses and outer recesses in the region of the other main surface of the perforated disc.
  • a perforated disc is described as a connecting plate between overlapping, interconnected busbars. This perforated disc has on a side facing the busbar, elevations extending radially.
  • the US 4,943,247A also discloses a perforated disc with ridges and depressions.
  • Object of the present invention is to provide a perforated disc, which ensures a particularly good electrical connection between two busbars of different busbar materials when arranged between them.
  • Object of the present invention is also to provide a particular use of such a perforated disc.
  • the perforated disc according to the invention consists of metal. It has major surfaces on remote disc sides. In the area of the one, first main surface, the perforated disc consists of aluminum or an aluminum alloy. In the area of the other, second main surface, the perforated disc has a layer of copper or a copper alloy. It is essential that the perforated disc has elevations in the region of the disk surface having the first main surface which protrude beyond the first main surface of the perforated disk on this side of the disk.
  • the perforated disc according to the invention Due to the design of the perforated disc according to the invention, it is neither necessary to grease these to prevent an oxide layer in order to obtain the oxygen-tightness, nor is it necessary to remove a possibly formed oxide layer, for example by means of a brush. It is irrelevant whether the perforated disk on its aluminum side and / or cooperating with this aluminum side aluminum rail have each applied an oxide layer. If such an aluminum oxide layer is present, this is from the elevations of the perforated disc penetrated during pressing of the perforated disc between the two rails. Under the pressure exerted by the two rails on the perforated disk, the perforated disk with its elevations penetrates slightly into the associated aluminum rail, so that a conductive connection between the perforated disk and the aluminum rail is ensured.
  • a possible oxide layer located on the aluminum side of the perforated disk on its elevations is removed during the joining of the two rails due to the action of the aluminum rail.
  • a possible oxide layer located on the aluminum rail is penetrated by the elevations of the perforated disk when connecting the rails.
  • the perforated disc is made almost entirely of aluminum or an aluminum alloy. Copper or a copper alloy is thus present only in the region of a layer thickness of the perforated disc. As a result, the perforated disc has a layer of copper or a copper alloy in the region of the second main surface.
  • the perforated disc has a layer of copper or a copper alloy produced by rolling or spraying or deposition.
  • the perforated disc Due to this design and material properties of the perforated disc, namely to the effect that it consists essentially of aluminum or an aluminum alloy, and copper or a copper alloy is applied only in a thin layer, resulting in very low material costs for the perforated disc. In this case, it is nevertheless ensured that the aluminum side of the perforated disk comes into contact with the copper rail in contact with the aluminum rail and the copper side of the perforated disk.
  • the elevations are embodied as forms, wherein the perforated disk has depressions produced on the disk surface which has the second main surface when being stamped out, and has the disk side which has the first main surface and which has elevations or forms produced during stamping.
  • the perforated disc can be produced particularly easily.
  • the perforated disk has an abrupt increase in height from the first main surface to the respective increase.
  • the elevations are arranged in particular radially extending. As a result, an elevation pattern can be produced which, via an advantageous distribution in the region of the associated main surface of the perforated disk, ensures a favorable pressure distribution between perforated disk and associated aluminum rail when connecting the two rails.
  • the elevations are distributed uniformly over a full circle.
  • four to six, preferably five elevations are arranged.
  • This small number of ridges ensures a relatively high surface pressure between the ridges and the aluminum rail, so that not only the penetration of the oxide layer is ensured by the increases, but also a certain deformation of the aluminum rail under the effect of the elevations, which press slightly into the aluminum rail.
  • the perforated disc is preferably designed such that it has a circular or angular outer contour and / or an inner contour which is circular at least over partial sections.
  • an angular outer contour this is preferably quadrangular, in particular square.
  • the at least over sections of circular inner contour is achieved that a defined guidance of the perforated disc in a rail connecting fasteners is possible. Because of this guide, the perforated disc is kept largely captive in the fastener. This simplifies the installation of busbars, fasteners and perforated disc.
  • the perforated disc has a circular inner contour with a plurality of inwardly curved portions, in particular has three inwardly curved portions.
  • the respective increase preferably extends essentially over the radial extent of the perforated disc. This is understood to mean the radial extent between its outer contour and its inner contour. In particular, the respective increase extends over a length of more than 50% of the radial extent of the perforated disc between the outer contour and the inner contour.
  • the respective increase expediently has a greater length-width ratio, in particular in the case of lengthwise alignment of the increase in the radial direction of the perforated disk.
  • the length-width ratio is preferably 5 to 8.
  • the object is further achieved by a particular use of the perforated disc according to the invention and described in further developments.
  • This is used as a connecting plate between overlapping, interconnected busbars of different materials.
  • a connecting means passes through holes in the busbars and connects the busbars firmly together.
  • the perforated rail contacts one of the busbars made of aluminum or an aluminum alloy, and the perforated disk contacts the other copper busbar or a copper alloy busbar in the region of the side facing away from the elevations.
  • the perforated disc is used in conjunction with a connecting means which has a screw and a nut.
  • a connecting means which has a screw and a nut.
  • This connecting agent may well be a commercially available product. In this regard, it is therefore to pay attention to any special choice of material.
  • the perforated disc 1 is as an item in the Fig. 1 to 5 illustrates:
  • the perforated disc 1 is made almost entirely of aluminum or an aluminum alloy. This is in the sectional view according to Fig. 2 through the dashed Lines illustrated.
  • This aluminum base body is provided in the region of a main surface of the perforated disc 1 with a coating of copper or a copper alloy.
  • the perforated disc 1 has major surfaces 2 and 3 on opposite sides of the disc. These are arranged parallel to each other.
  • the perforated disc 1 passes through a hole 4.
  • the perforated disc 1 has a circular outer contour 5 and a circular inner contour 6 over partial sections. This inner contour 6 is provided with three inwardly curved portions 7.
  • the perforated disc 1 in the region of the main surface 2 made of aluminum or an aluminum alloy.
  • the perforated disc 1 is made of copper or a copper alloy.
  • the perforated disk 1 has five elevations 8 in the region of the disk surface having the main surface 2. These are over the main surface 2 on this side of the disk over.
  • the elevations 8 are formed as characteristics.
  • These elevations 8 are arranged radially. They are evenly distributed over the full circle of the perforated disc 1, thus positioned at an angle of 72 °.
  • the respective elevation 8 extends essentially over the radial extension of the perforated disc 1. It extends in particular over a length of more than 50% of the radial extent of the perforated disc between outer contour 5 and inner contour 6.
  • the respective elevation 8 is due to the formation by embossing as a rod-shaped projection with respect to the main surface 2.
  • the perforated disc 1 thus has an abrupt jump in the transition from the main surface 2 to the respective elevation 8.
  • the respective increase is formed as a straight rod-shaped projection with respect to the main surface 2.
  • the perforated disc has, for example, a diameter of 30 mm, with a thickness of 2 mm between the two main surfaces 2, 3.
  • the height of the respective increase is, for example, 0.5 mm.
  • Fig. 2 In the sectional view according to Fig. 2 is the region of the perforated disc 1, which consists of aluminum or an aluminum alloy, designated by the reference numeral 10 and the region of the coating made of copper or copper alloy by the reference numeral 11.
  • Fig. 6 to 9 illustrate the connection of two bus bars 12, 13 using a fastening means 14 in the arrangement of the perforated disc 1 between the two bus bars 12, 13th
  • the thicker busbar 12 here consists of aluminum or an aluminum alloy, the thinner busbar 13 made of copper or a copper alloy.
  • the width of the busbars 12, 13 is the same.
  • the two busbars 12, 13 are connected by means of a commercially available fastening means 14 made of steel. This is a screw 15, a nut 16 and two clamping disks 17.
  • a screw 15 with a threaded portion 18 of the screw 15 through a clamping plate 17 and a threaded portion 18th adapted hole of the bus bar 12 is inserted and turned on the free area of the threaded portion 18, the perforated disc 1 with play.
  • An attachment of the perforated disc 1 is not possible here due to the engagement of the portions 7 of the perforated disc 1 in the threaded portion 18.
  • the perforated disc 1 is held captive on the threaded portion 18 for the further assembly process.
  • the perforated disc 1 faces with its aluminum side of the aluminum busbar 12, whereby the elevations 8 of the perforated disc 1 of this busbar 12 are facing.
  • the screw 15 is inserted through a relative to the threaded portion 18 adapted hole of the copper bus bar 13, in any mounting position, and then put on the free threaded portion 18, the further clamping plate 17 and the nut 16 is screwed.
  • the busbars 12, 13 are braced against each other at this arranged perforated disc 1.
  • the aluminum side of the perforated disc 1 passes through the elevations 8 in contact with the aluminum busbar 12 and it leave these elevations 8 slight recesses in the busbar 12.
  • the copper busbar 13 contacts the copper side of the perforated disc. 1

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  • Non-Insulated Conductors (AREA)

Claims (12)

  1. Disque perforé (1) présentant les caractéristiques suivantes :
    - le disque perforé (1) constitué de métal présente des surfaces principales (2, 3) sur des faces opposées du disque,
    - dans la zone d'une première surface principale (2), le disque perforé (1) est constitué d'aluminium ou d'un alliage d'aluminium,
    - dans la zone de l'autre ou de la seconde surface principale (3), le disque perforé (1) présente une couche (11) de cuivre ou d'un alliage de cuivre,
    caractérisé par les caractéristiques suivantes :
    - dans la zone de la face du disque qui présente la première surface principale (2), le disque perforé (1) présente sur cette face du disque des parties saillantes (8) qui dépassent de la première surface principale (2) du disque perforé (1),
    - le disque perforé (1) est constitué d'aluminium ou d'un alliage d'aluminium (10),
    - les parties saillantes (8) sont réalisées sous la forme de moulures, dans lequel le disque perforé (1) comportant sur la face du disque qui présente la seconde surface principale (3) des creux (9) réalisés lors de l'emboutissage et sur la face du disque qui présente la première surface principale (2) des moulures (8) réalisées lors de l'emboutissage.
  2. Disque perforé selon la revendication 1, dans lequel le disque perforé (1) présente la couche (11) de cuivre ou d'alliage de cuivre produite par laminage, pulvérisation ou dépôt.
  3. Disque perforé selon l'une des revendications 1 à 2, dans lequel les parties saillantes (8) sont disposées de manière à s'étendre radialement.
  4. Disque perforé selon l'une des revendications 1 à 3, dans lequel les parties saillantes (8) sont disposées de manière uniformément répartie sur un cercle complet, et en particulier, quatre à six, de préférence cinq parties saillantes (8) sont disposées sur le cercle complet.
  5. Disque perforé selon l'une des revendications 1 à 4, dans lequel celui-ci présente un contour extérieur (5) circulaire ou anguleux et/ou un contour intérieur (6) qui est circulaire au moins sur des sections partielles.
  6. Disque perforé selon l'une des revendications 1 à 5, dans lequel la partie saillante (8) respective s'étend sensiblement sur l'étendue radiale du disque perforé (1), en particulier sur une longueur supérieure à 50% suivant l'étendue radiale du disque perforé (1) entre le contour extérieur (5) et le contour intérieur (6).
  7. Disque perforé selon l'une des revendications 1 à 6, dans lequel la partie saillante (8) respective présente un rapport longueur-largeur élevé, en particulier lorsque la partie saillante (8) est orientée longitudinalement dans la direction radiale du disque perforé (1).
  8. Disque perforé selon l'une des revendications 1 à 7, dans lequel la partie saillante (8) est réalisée sous la forme d'une protubérance en forme de tige par rapport à la première surface principale (2), en particulier sous la forme d'une protubérance en forme de tige droite.
  9. Disque perforé selon l'une des revendications 1 à 8, dans lequel celui-ci présente un contour intérieur circulaire (6) pourvu d'une pluralité de zones partielles (7) incurvées vers l'intérieur, en particulier de trois zones partielles (7) incurvées vers l'intérieur.
  10. Utilisation d'un disque perforé (1) selon l'une des revendications 1 à 9 sous la forme de plaquettes de liaison entre des barres omnibus (12, 13) reliées les unes aux autres, se chevauchant et constituées de matériaux différents, dans lequel un moyen de fixation (14) passe à travers des trous ménagés dans les barres omnibus (12, 13) et relie fermement les barres omnibus (12, 13), dans lequel le disque perforé (1) est en contact avec l'une des barres omnibus (12) constituée d'aluminium ou d'un alliage d'aluminium dans la zone de ses parties saillantes (8) et le disque perforé (1) est en contact avec l'autre barre omnibus (13) constituée de cuivre ou d'un alliage de cuivre dans la zone de la face tournée à l'opposé des parties saillantes (8).
  11. Utilisation d'un disque perforé selon la revendication 10 en association avec un moyen de fixation (14), comportant une vis (15) et un écrou (16), en particulier dans le cas de disques de tension (17) placés sous une tête de vis (19) de la vis (15) et sous l'écrou (16).
  12. Utilisation d'un disque perforé selon la revendication 10 ou 11, dans lequel le disque perforé (1) peut être vissé avec un certain jeu sur une partie filetée (18) de la vis (15) au moyen de ses régions partielles incurvées vers l'intérieur (7).
EP16176671.2A 2016-06-28 2016-06-28 Disque perfore et son utilisation pour des rails electriques relies entre eux, constitues de differents materiaux Active EP3264533B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP16176671.2A EP3264533B1 (fr) 2016-06-28 2016-06-28 Disque perfore et son utilisation pour des rails electriques relies entre eux, constitues de differents materiaux
PCT/EP2017/065693 WO2018001954A1 (fr) 2016-06-28 2017-06-26 Plaque perforée et son utilisation dans des barres conductrices reliées entre elles en différents matériaux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16176671.2A EP3264533B1 (fr) 2016-06-28 2016-06-28 Disque perfore et son utilisation pour des rails electriques relies entre eux, constitues de differents materiaux

Publications (2)

Publication Number Publication Date
EP3264533A1 EP3264533A1 (fr) 2018-01-03
EP3264533B1 true EP3264533B1 (fr) 2019-08-07

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Application Number Title Priority Date Filing Date
EP16176671.2A Active EP3264533B1 (fr) 2016-06-28 2016-06-28 Disque perfore et son utilisation pour des rails electriques relies entre eux, constitues de differents materiaux

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EP (1) EP3264533B1 (fr)
WO (1) WO2018001954A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020108669B3 (de) 2020-03-30 2021-04-29 Auto-Kabel Management Gmbh Verbindungsanordnung und Verfahren zum Verbinden einer Verbindungsanordnung mit einem Bauteil

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3993397A (en) * 1975-07-31 1976-11-23 Gutshall Charles E Tilting terminal clamp assembly
US4943247A (en) * 1989-05-31 1990-07-24 Amp Incorporated Annular electrical terminal

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2141550C2 (de) * 1971-08-19 1978-12-07 Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co Kg, 7000 Stuttgart Ringförmiges Kontaktelement
FR2631746A1 (fr) * 1988-05-17 1989-11-24 Muller Yves Rondelle de raccordement electrique pour cosses en aluminium ou autre metal
US6082942A (en) * 1993-11-22 2000-07-04 Swick; E. Grant Electrical connection terminal assembly and tilt washer
CN201698781U (zh) * 2010-06-12 2011-01-05 无锡市锡容电力电器有限公司 一种用于中压无功补偿设备的过渡片
EP2546856B1 (fr) 2011-07-12 2016-05-11 Jean Müller GmbH Elektrotechnische Fabrik Baguette pour fusibles NH
JP5956825B2 (ja) * 2012-05-10 2016-07-27 日本航空電子工業株式会社 接続部材及びそれを備えた接続構造体
CN102760516B (zh) * 2012-07-05 2014-06-18 中国石油天然气股份有限公司 铜铝过渡复合接续条以及复合多级纵向接续条的制造方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3993397A (en) * 1975-07-31 1976-11-23 Gutshall Charles E Tilting terminal clamp assembly
US4943247A (en) * 1989-05-31 1990-07-24 Amp Incorporated Annular electrical terminal

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EP3264533A1 (fr) 2018-01-03
WO2018001954A1 (fr) 2018-01-04

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