EP3800749B1 - Procédé de fabrication d'un élément de contact électroconducteur, élément de contact électroconducteur et manchon doté d'un élément de contact électroconducteur - Google Patents

Procédé de fabrication d'un élément de contact électroconducteur, élément de contact électroconducteur et manchon doté d'un élément de contact électroconducteur Download PDF

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Publication number
EP3800749B1
EP3800749B1 EP20000333.3A EP20000333A EP3800749B1 EP 3800749 B1 EP3800749 B1 EP 3800749B1 EP 20000333 A EP20000333 A EP 20000333A EP 3800749 B1 EP3800749 B1 EP 3800749B1
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EP
European Patent Office
Prior art keywords
metal strip
contact element
projection
band
metal
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
EP20000333.3A
Other languages
German (de)
English (en)
Other versions
EP3800749A1 (fr
Inventor
Tony Robert Noll
Michael Wolf
Christoph Kästle
Gerhard Thumm
Jochen Walliser
Volker Voggeser
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.)
Wieland Werke AG
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Wieland Werke AG
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Publication of EP3800749A1 publication Critical patent/EP3800749A1/fr
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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
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending
    • 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
    • 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
    • H01R13/111—Resilient sockets co-operating with pins having a circular transverse section
    • 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
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
    • H01R13/187—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with spring member in the socket

Definitions

  • the invention relates to a method for producing an electrically conductive contact element, an electrically conductive contact element and a sleeve with an electrically conductive contact element.
  • Contact elements are used to provide a detachable, electrically conductive connection between two current-carrying components.
  • the two components are at a distance that has to be bridged by the contact element.
  • the contact element In order to keep the contact resistance between the contact element and the component as small as possible, the contact element must be pressed against the surface of the component with a minimum force.
  • Contact elements therefore usually have a spring mechanism that ensures the required contact pressure between contact element and component. Furthermore, the contact element must be able to compensate for tolerances in the distance between the components to be connected. A large spring deflection is required for this.
  • GB 2 004 424 A discloses an electrical contact having a cylindrical cavity.
  • the contact has tongue-like projections on its outside and inside, which protrude from the surface.
  • the projections are formed from metal strip material by making U-shaped cuts in the material so that the projections are separated from the strip material on three of their four boundary edges and are only connected to the strip material on one side. This allows the protrusions to be easily bent out of the belt surface without having to stretch the material.
  • the material of the projections is therefore not deformed, which is why it retains its original thickness and also does not harden.
  • a section of the strip material is bent 180° to form a double-layered element which is formed into a hollow cylinder.
  • the projections are on the outside and some on the inside of the hollow cylinder. It is said to be flexible and advantageous that, depending on the orientation of the U-shaped cuts to the bending line, the projections can have a different orientation to the axis of the hollow cylinder.
  • WO 2016/077767 A1 discloses an electrical connector in the form of a cable lug having a cavity for receiving a cable on the one hand and a lug on the other.
  • the strap has a predetermined breaking point in the form of V-shaped grooves.
  • the tab can have holes, but it has no elevations.
  • a method for producing detachable connections for electrical lines is known.
  • a metal sheet made of elastic material is placed between the lines to be connected is provided with a large number of elevations.
  • the bumps may be in the form of bumps.
  • the elevations are created by bending parts of the sheet metal.
  • the contact pad has protruding parts and may have a corrugated or arched shape.
  • the contact pad consists of spring-hard material.
  • an electrical contact device with at least two contact bodies and at least one lamellar body is known.
  • the louver body includes a plurality of arched louvers separated by slots.
  • the slats work according to the leaf spring principle.
  • the invention is based on the object of specifying a production method for an electrically conductive contact element that is improved in terms of speed and precision, an electrically conductive contact element that is improved in terms of precision, and a sleeve with such a contact element.
  • the invention is represented by the features of claim 1 with regard to a production method, by the features of claim 7 with regard to an electrically conductive contact element and by the features of claim 11 with regard to a sleeve.
  • the other back-related claims relate advantageous training and developments of the invention.
  • the invention is based on a production method with which an electrically conductive contact element is produced from a metal strip of any length with a width B and a thickness d1.
  • the metal strip preferably consists of a material with a modulus of elasticity of at least 110 GPa and a yield point R p0.2 of at least 300 MPa.
  • the material is particularly preferably a copper alloy with an electrical conductivity of at least 50% IACS.
  • the metal strip has a top and a bottom as main sides.
  • the length of the metal strip defines its longitudinal direction.
  • the transverse direction is defined transverse to the longitudinal direction.
  • the width B of the metal strip is measured in the transverse direction of the metal strip. It is preferably 5 to 40 mm.
  • the thickness d1 of the metal strip is preferably at least 200 ⁇ m and at most 600 ⁇ m.
  • the invention is based on the idea that the embossing of the depressions in step c) and thus the forming of the elevations can be carried out particularly easily and quickly if, before embossing, predetermined breaking points in the form of wedge-shaped grooves are made in at least one of the two sides of the metal strip Metal strip are introduced, which run in the longitudinal direction of the metal strip. After the grooves have been made, all that remains of the metal strip in the area of the grooves is a web that is significantly thinner than the thickness d1 of the original metal strip. The metal strip is therefore weakened at these points. Less force is required to separate the web than if the tape does not have any predetermined breaking points.
  • the metal band is divided into band areas that are delimited by the grooves and extend in the longitudinal direction of the metal band.
  • step c) depressions spaced apart from one another are embossed in individual belt areas or in all belt areas.
  • the center of such an indentation lies approximately in the middle of a band area between two adjacent grooves.
  • the indentations are stamped so deeply into the metal strip in the lateral direction that the metal strip bulges or bulges on the other side.
  • spaced-apart local elevations in the form of bulges are formed on at least one side of the metal strip Correspond to indentations on the other side of the metal strip.
  • the elevations represent areas that are raised above the strip surface and non-raised areas remain between two elevations of a strip area.
  • the lateral deformation of the metal strip due to the embossing of a depression is preferably greater than the thickness d1 of the metal strip.
  • the lateral deformation can be at least three times, particularly preferably at least five times or eight times the thickness d1 of the metal strip.
  • the height H of the elevations formed by the embossing is preferably at least three times, particularly preferably at least five times or eight times the thickness d1 of the metal strip.
  • the height H of an elevation is measured from the undeformed surface of the metal strip to the maximum lateral extent of the elevation over the surface of the metal strip.
  • the lateral deformation causes shearing forces in the material in the area of each embossing point.
  • the material preferably breaks at the predetermined breaking points formed in step b), because the thin webs are easily separated by the shearing forces.
  • the material that is intended to form an elevation is still connected to the non-deformed material of the metal strip at an embossing point only in the direction parallel to the grooves. In the direction transverse to the grooves, there is no longer such a connection of the material. Embossing the indentation consequently requires less force and can be done more quickly.
  • a local elevation formed in this way on the surface of the metal strip has a boundary.
  • the boundary is defined as the boundary between the deformed, bulging area of the elevation and the undeformed area of the metal strip. At least one of the separating surfaces formed by separating the webs forms part of this boundary.
  • a further advantage of the method according to the invention is that the parting surface is burr-free, ie has no burr.
  • the extension of an elevation in the longitudinal direction of the metal strip is preferably 1.5 to 4.5 mm.
  • the width of an elevation transverse to the longitudinal direction of the metal strip is preferably 0.5 to 2.5 mm.
  • the extension of an elevation in the longitudinal direction is preferably 1.5 to 3 times the width of the elevation.
  • the height H of an elevation is preferably 1 to 6 mm, the height of the elevation being greater the thicker the metal strip is.
  • the grooves are preferably introduced by a forming process, for example by structure rolling.
  • This not only reduces the thickness of the strip locally to the thickness of the web, but also hardens the material in the area of the web.
  • the hardening of the material means that the yield point of the material increases and approaches the tensile strength. In this case, when a shearing force acts on the web, plastic deformation of the web hardly takes place, but the web breaks as soon as the shearing force reaches the tensile strength at a point.
  • the metal strip is divided transversely so that one or more contact elements are formed in the form of strip sections.
  • Each contact element has at least one elevation, preferably multiple elevations.
  • the transverse division can take place after the embossing of the depressions in step c), ie towards the end of the method. This has the advantage that up to this step the workpiece to be machined is a quasi-endless strip material that can be transported through the device provided for carrying out the method by simple conveyor devices, for example by rollers or a pulling unit.
  • the grooves introduced in step b) can be introduced on both sides of the metal strip and in pairs opposite one another.
  • the remaining web is delimited in the lateral direction not just by one but by two grooves. Due to the notch effect of the grooves on both sides, this facilitates the burr-free separation of the web.
  • opposing grooves are introduced at approximately the same depth, the web is arranged approximately in the middle of the metal strip in relation to the thickness of the metal strip. This symmetry is advantageous if the metal strip is embossed on both sides in step c) in order to produce elevations on both sides of the metal strip.
  • the grooves can each have a finite length that is shorter than the length of the strip section after step d) has been carried out.
  • the grooves therefore do not extend continuously along the longitudinal direction of the metal strip, but are interrupted.
  • Predetermined breaking points are therefore only produced at specific, spatially limited points on the metal strip.
  • the strip material is only weakened locally and precisely at the points at which the indentations are embossed in step c), while there is no weakening at the other points.
  • the mechanical stability of the contact element is less impaired than if the grooves extend continuously along the longitudinal direction of the metal strip.
  • the elevations of respectively adjacent strip areas can be shaped in such a way that they are offset from one another in the transverse direction of the metal strip. With this arrangement of the elevations, a raised area of the metal strip is always adjacent to a non-raised area Area of adjacent band area. This ensures the mechanical stability of the metal strip during processing and ultimately also the stability of the contact element.
  • adjacent bumps can be formed so close together that the raised and non-raised areas of the metal strip form a checkerboard-like pattern.
  • the elevations can be formed both on the top and on the bottom of the metal strip.
  • the introduction of force when embossing the depressions in step c) thus takes place in both directions lateral to the surface of the metal strip. This makes the shear stress distribution in the material more even. This has a positive effect on the quality of the contact element. In particular, a one-sided bending of the contact element is prevented and its flatness is thus improved.
  • the metal strip Before stamping, the metal strip can advantageously be heated to a temperature of at least 10 K on average above the recrystallization temperature of the strip material. Average here means that averaged over the width of the metal strip, the metal strip is heated to a temperature of at least 10 K above the recrystallization temperature of the strip material. This heat treatment softens the material. The depressions can then be embossed with less effort.
  • a further aspect of the invention includes an electrically conductive contact element for electrically connecting two current-carrying components.
  • the contact element comprises a metal strip, which is preferably made of a material with a modulus of elasticity of at least 110 GPa and a yield point R p0.2 of at least 300 MPa.
  • the metal strip has a top and a bottom as main sides.
  • the contact element includes furthermore, at least one elevation formed from the material of the metal strip and protruding from the upper side or the underside of the metal strip, in the form of a bulge.
  • the thickness d2 of the metal strip in the area of the elevation is at least locally smaller than the thickness d1 of the metal strip in the sections outside an elevation.
  • the hardness of the material is at least 3% greater in the area of the elevation than in the sections outside the elevation.
  • the elevation has a parting surface on part of its boundary. According to the invention, the elevation has at least one bevel adjoining the parting surface, which extends over at least 20% and at most 80% of the thickness d2 of the metal strip and encloses an angle of 10° to 30° with the direction perpendicular to the strip surface.
  • each elevation acts as an elastic spring when pressure is applied in the direction perpendicular to the surface of the metal strip.
  • the elevation should generate a certain contact pressure on the surface of one of the components to be connected by means of its contact surface. Therefore, for a given modulus of elasticity and a given yield point, the shape and size, ie in particular the width and height of the elevation, must be tolerated within a narrow window.
  • the elevation is formed from the material of the metal strip by a forming step, for example an embossing step. During this deformation, the material stretches in the area of the elevation, so that in this area the thickness d2 of the metal strip is smaller than its original thickness d1.
  • the metal strip still has its original thickness d1 in the non-deformed area outside of an elevation.
  • the material is hardened in the area of the elevation due to the deformation of the material. Consequently, the hardness of the material, measured in Vickers hardness HV, is at least 3% greater in the area of the elevation than in the non-deformed sections outside of an elevation, particularly in the sections between two adjacent elevations.
  • the boundary of an elevation is defined as the boundary between the deformed area that is raised above the surface of the metal strip and the non-deformed area of the metal strip.
  • the elevation is designed in such a way that it has a parting surface on part of its boundary.
  • the material forming the bump is separated from the material of the undeformed metal strip.
  • the elevation has at least one bevel adjoining the parting surface, which extends over at least 20% and at most 80% of the thickness d2 of the metal strip and encloses an angle of 10° to 30° with the direction perpendicular to the strip surface. Angles smaller than 10° are technically difficult to master. When the angle is more than 30°, the bump contact area is significantly reduced.
  • the chamfer results from a wedge-shaped groove made in the metal strip before the boss is formed.
  • the groove reduced the thickness of the metal strip locally and thus created a predetermined breaking point.
  • the material of the elevation was separated from the non-deformed material of the metal strip when the elevation was formed, so that the elevation could be formed particularly easily at this point.
  • the advantages achieved with the invention consist in particular in the fact that the size and the shape of the elevation can be predetermined very precisely by the predetermined breaking points. Any inhomogeneities that may occur in the material of the metal strip only have a minor influence on the shape and size of the elevation. Thus, the elevation can be formed with great precision.
  • Such a contact element can be produced using the method described above.
  • the metal strip of the contact element essentially corresponds to the strip section that is formed in process step d) by transversely dividing the metal strip.
  • Further work steps can be carried out on the strip section formed in method step d) in order to form the metal strip of the contact element.
  • Such Work steps can be, for example, rounding the corners, deburring the edges or coating the surface with tin, nickel or silver. All preferred and advantageous embodiments of the method described above can be used to produce the contact element.
  • the contact element can have all the preferred dimensions described above in connection with the production method and can be made of the materials described above.
  • the contact element can each have at least one elevation both on the upper side and on the underside of the metal strip.
  • the total lateral extent of the contact element ie the extent of the contact element perpendicular to the surface of the metal strip, must be greater than the distance between the components to be connected. If the contact element only has elevations on one side of the metal strip, these must be higher than the entire distance to be bridged minus the strip thickness d1. If, on the other hand, the contact element has elevations both on the upper side and on the underside of the metal strip, these only have to be higher than half the distance to be bridged minus the strip thickness d1. This simplifies the production of the contact element because the material does not have to be deformed as much.
  • the contact element can have a plurality of spaced-apart elevations on the top and/or bottom of the metal strip, ie on at least one of the two sides of the metal strip. In this way, a large number of contact surfaces can be formed between the contact element and the component to be connected. The electrical current can then be distributed over many contact surfaces and the maximum current density achieved remains low.
  • adjacent elevations can be offset from one another in the transverse direction of the metal strip.
  • a further aspect of the invention relates to a sleeve with a contact element as described above, the contact element being built into the sleeve in such a way that a hollow space for receiving a component to be contacted is formed within the sleeve.
  • the cavity can preferably be configured in the shape of a cylinder or cuboid.
  • a component is formed that can be manufactured in a standardized manner and used in many applications for similar tasks.
  • a component can be formed in the form of a double sleeve for connecting two electrical conductors such as cables or busbars.
  • the component can have a plug and a socket.
  • the metal strip 10 has six wedge-shaped grooves 13 which extend continuously in the longitudinal direction of the metal strip 10 and which lie opposite one another in pairs on both its top side 11 and its underside 12 .
  • the depth of the grooves 13 is approximately 35 to 40% of the thickness d1 of the metal strip 10, so that the thickness of the web 18 is still approximately 20 to 30% of the original thickness d1 of the metal strip 10 .
  • the metal strip 10 is thus considerably weakened in the area of the grooves 13 .
  • the grooves 13 thus form predetermined breaking points.
  • the web 18 can already be separated with little force.
  • the metal strip 10 is divided into strip regions 14 by the grooves. Depending on the distance between adjacent grooves 13, the belt areas 14 have different widths.
  • indentations 20 are embossed in the band areas 14, which have a greater width than the other band areas.
  • FIG. 2 shows a plan view of a section of a metal strip 10 with continuously running grooves 13 after method step b).
  • the metal strip 10 has ten grooves 13 at least on the visible upper side 11 . This in 2
  • the metal strip 10 shown can also have grooves 13 on the underside 12, which is not visible, as in 1 shown metal band 10.
  • FIG. 3 shows a plan view of a section of a metal strip 10 with a multiplicity of non-continuous grooves 13 after method step b).
  • the grooves 13 each only extend over a finite length.
  • the metal strip 10 shown has a multiplicity of grooves 13 at least on the visible upper side 11 . It can also be placed on the non-visible underside 12 Have grooves 13, which preferably correspond to the grooves 13 on the top 11.
  • FIG. 4 shows a plan view of a contact element 1 after the embossing of depressions 20 and after the transverse cutting of the metal strip 10. 4 thus shows a contact element 1 after carrying out method steps c) and d).
  • a metal strip 10 with continuous grooves 13 as in 2 shown used.
  • the indentations 20 were embossed both on the upper side 11 and on the underside 12 of the metal strip 10, which is not visible.
  • the indentations 20 embossed on the top 11 of the metal strip 10 lead to elevations 22 on the underside 12 of the metal strip 10, while the indentations embossed on the underside 12 of the metal strip 10, which are not visible, lead to elevations 21 on the upper side 11 of the metal strip 10.
  • the metal strip 10 was divided transversely, resulting in a metal strip 16 in the form of a strip section 15 which has six elevations 21 on its upper side 11 and four elevations 22 on its underside 12 .
  • This metal strip 16 with elevations 21, 22 represents a contact element 1. Since the contact element 1 was made from a metal strip 10 with continuously running grooves 13, the metal strip 16 has grooves 13 between two longitudinally adjacent elevations 21, 22.
  • figure 5 shows one to 4 Analogous top view of a contact element 1 after the embossing of depressions 20 and after the transverse division of the metal strip 10.
  • the contact element shown was in accordance with the production of the contact element 1 figure 5 a metal band 10 with discontinuous grooves 13, as in 3 shown, used.
  • the grooves 13 introduced in step b) were positioned precisely at the points on the metal strip 10 at which the indentations 20 on both sides 11, 12 of the metal strip 10 are to be embossed in step c).
  • the length of the grooves 13 is only slightly greater than the extension of the elevations 21, 22 in Longitudinally of the metal strip 10, so that the grooves 13 do not or only slightly protrude beyond the elevations 21, 22 in the longitudinal direction of the metal strip 10 after the embossing of the depressions. Accordingly, in figure 5 the grooves 13 are only recognizable as a short overhang 131. Since the contact element has no grooves in the other areas, it is particularly stable.
  • FIG 6 shows a side view of a contact element 1 according to FIG 4 or figure 5 .
  • the contact element 1 has a metal strip 16 .
  • Depressions 20 were embossed on both sides of the metal strip 16, so that elevations 21 were formed both on the upper side 11 of the metal strip 16 and elevations 22 on the underside 12 of the metal strip 16.
  • the elevations 21, 22 have a curved shape. It should be noted that the bumps 22 on the underside 12 lie in a plane behind the plane in which the bumps 21 on the top 11 of the metal strip 16 lie.
  • the material forming an elevation 21, 22 was separated from the material of the undeformed metal strip 10 at the predetermined breaking points formed by the grooves 13.
  • the resulting separating surface 24 on the side of the elevations 21, 22 is in 6 recognizable.
  • the elevations 21, 22 each have at least one chamfer on the parting surfaces 24, which, however, 6 is not shown for reasons of clarity.
  • the elevations 21, 22 each have the same height H on both sides 11, 12 of the metal strip 16.
  • FIG. 7 shows a perspective view of a section of an elevation 21, 22 as an enlarged detail X of FIG 6 , while 8 a cross-sectional view of the 7 elevation 21, 22 shown.
  • the elevation 21, 22 has a separating surface 24 on each of its two lateral edges.
  • the separating surface 24 has a width which is approximately 20% of the thickness d2 of the elevation 21, 22.
  • the separating surfaces 24 arise when the webs 18 are separated in method step c).
  • Chamfers 26 adjoin the parting surfaces 24 on both sides.
  • the Chamfers 26 correspond to the side walls of the wedge-shaped grooves 13 which were introduced into the metal strip 10 in method step b).
  • the chamfers 26 extend over approximately 40% of the thickness d2 of the metal strip 16 in the area of the elevation 21, 22. They enclose an angle ⁇ of approximately 20° with the direction perpendicular to the surface of the strip.
  • FIG. 9 shows one to 4 analog top view of another alternative contact element 1 after the embossing of depressions and after transverse parts of the metal strip 10.
  • the in 4 Contact element 1 shown were in the in 9 Contact element 1 shown stamped all depressions in the underside 12 of the metal strip 10, so that the contact element 1 has a total of ten elevations 21 only on its upper side 11.
  • FIG 10 shows one to 6 analog side view of a contact element 1 according to 9 .
  • depressions 20 were only embossed in the bottom 12, so that elevations 21 were formed only on the top 11 of the metal strip 16.
  • the elevations 21 have a curved shape. It should be noted that - counting the elevations 21 on the left edge of the 10 beginning - the second and fourth elevations 21 lie in a plane behind the plane in which the first and third elevations 21 lie. This corresponds to the respective position of the elevations 21 in the contact element 1 according to FIG 9 .
  • the depressions 20 were embossed, the material forming an elevation 21 was separated from the material of the undeformed metal strip 10 at the predetermined breaking points formed by the grooves 13 .
  • the parting surface 24 that is created as a result on the side of the elevations 21 is in 10 recognizable.
  • the elevations 21 each have at least one chamfer on the parting surfaces 24, which, however, 10 is not shown for reasons of clarity.
  • the elevations 21 have the height H in relation to the surface of the metal strip 16 . This in 10 Detail marked with X is in 7 and 8 shown in more detail.

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  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Claims (11)

  1. Procédé pour la préparation d'un élément de contact électroconducteur (1), le procédé comprenant les étapes suivantes :
    a) préparation d'un ruban de métal (10) avec un côté supérieur (11) et un côté inférieur (12) opposé au côté supérieur (11),
    b) introduction de rainures (13) en forme de clavette, s'étendant uniquement dans la direction longitudinale du ruban de métal (10) comme positions destinées à la rupture dans le côté supérieur (11) et/ou le côté inférieur (12) du ruban de métal (10), de sorte qu'apparaissent des domaines de ruban (14) qui sont délimités par les rainures (13),
    c) estampage de creux distants les uns des autres (20) dans au moins un des deux côtés (11, 12) du ruban de métal (10), de sorte que sont formées sur le côté opposé (12, 11) du ruban de métal (10) des élévations (21, 22) distantes les unes des autres, l'estampage étant réalisé de sorte que le ruban de métal (10) n'est séparé dans le domaine des positions d'estampage qu'aux positions destinées à la rupture, de sorte que les élévations (21, 22) sont dans la forme de voûtes, et qu'au moins une des surfaces de séparation (24) ainsi formées forme une partie du bord de l'élévation (21, 22),
    d) division transversale du ruban de métal (10), de sorte qu'au moins un élément de contact (1) est formé dans la forme d'un tronçon de ruban (15), l'élément de contact (1) présentant au moins une élévation (21, 22).
  2. Procédé selon la revendication 1, caractérisé en ce que les rainures (13) sont introduites dans l'étape b) sur les deux côtés (11, 12) du ruban de métal (10) et opposées par paire les unes aux autres.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que les rainures (13) présentent à chaque fois une longueur finie, qui est plus courte que la longueur du tronçon de ruban (15) après l'étape d).
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les élévations (21, 22) de domaines de ruban à chaque fois adjacents (14) ont été formées en quinconce les unes par rapport aux autres dans la direction transversale du ruban de métal (10).
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les élévations (21, 22) sont formées aussi bien sur le côté supérieur (11) que sur le côté inférieur (12) du ruban de métal (10).
  6. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le ruban de métal (10) est chauffé avant l'estampage à une température en moyenne au moins 10 K supérieure à la température de recristallisation de la matière de ruban.
  7. Elément de contact électroconducteur (1) comprenant :
    une bande de métal (16), la bande de métal (16) présentant un côté supérieur (11) et un côté inférieur (12),
    au moins une élévation (21, 22) constituée du matériau de la bande de métal (16) faisant saillie à partir du côté supérieur (11) ou côté inférieur (12) de la bande de métal (16), qui présente sur une partie de son bord une surface de séparation (24),
    caractérisé en ce que l'élévation (21, 22) est formée comme une voûte, en ce que l'épaisseur d2 de la bande de métal (16) dans le domaine de l'élévation (21, 22) est au moins localement inférieure à l'épaisseur d1 de la bande de métal (16) dans les tronçons à l'extérieur de l'élévation (21, 22), en ce que la dureté de la matière mesurée en dureté Vickers dans le domaine de l'élévation (21, 22) est au moins 3 % supérieure à celle dans les tronçons à l'extérieur de l'élévation (21, 22),
    et en ce que l'élévation (21, 22) présente au moins un biseau contigu à la surface de séparation (24), qui s'étend sur au moins 20 % et au plus 80 % de l'épaisseur d2 de la bande de métal (16) dans le domaine de l'élévation (21, 22) et inclut avec la direction perpendiculaire à la surface de bande un angle de 10° à 30°.
  8. Elément de contact (1) selon la revendication 7, caractérisé en ce qu'il présente aussi bien sur le côté supérieur (11) que sur le côté inférieur (12) de la bande de métal (16) à chaque fois au moins une élévation (21, 22).
  9. Elément de contact (1) selon la revendication 7 ou 8, caractérisé en ce qu'il présente sur le côté supérieur (11) et/ou le côté inférieur (12) de la bande de métal (16) plusieurs élévations (21, 22) distantes les unes des autres.
  10. Elément de contact (1) selon la revendication 8 ou 9, caractérisé en ce que des élévations (21, 22) adjacentes dans la direction transversale de la bande de métal (16) sont disposées en quinconce les unes par rapport aux autres.
  11. Manchon avec un élément de contact (1) selon l'une quelconque des revendications 7 à 10, caractérisé en ce que l'élément de contact (1) est inséré dans le manchon de sorte qu'à l'intérieur du manchon un espace creux est formé pour la prise d'une pièce de construction à mettre en contact.
EP20000333.3A 2019-10-01 2020-09-17 Procédé de fabrication d'un élément de contact électroconducteur, élément de contact électroconducteur et manchon doté d'un élément de contact électroconducteur Active EP3800749B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019006851.3A DE102019006851B3 (de) 2019-10-01 2019-10-01 Verfahren zur Herstellung eines elektrisch leitenden Kontaktelements, elektrisch leitendes Kontaktelement und Hülse mit einem elektrisch leitenden Kontaktelement

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EP3800749A1 EP3800749A1 (fr) 2021-04-07
EP3800749B1 true EP3800749B1 (fr) 2023-03-08

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EP20000333.3A Active EP3800749B1 (fr) 2019-10-01 2020-09-17 Procédé de fabrication d'un élément de contact électroconducteur, élément de contact électroconducteur et manchon doté d'un élément de contact électroconducteur

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE148159C (fr) * 1899-08-13 1904-02-09
DE3412849A1 (de) * 1983-04-07 1984-10-11 Siemens AG, 1000 Berlin und 8000 München Elektrische kontaktvorrichtung
EP0202564A2 (fr) * 1985-05-20 1986-11-26 Multi-Contact AG Basel Dispositif de contact électrique

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4139256A (en) * 1977-09-15 1979-02-13 North American Specialties Corp. Electrical contact and method of making same
US9559443B2 (en) * 2014-11-14 2017-01-31 Hubbell Incorporated Electrical connectors having field modifiable lugs

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE148159C (fr) * 1899-08-13 1904-02-09
DE3412849A1 (de) * 1983-04-07 1984-10-11 Siemens AG, 1000 Berlin und 8000 München Elektrische kontaktvorrichtung
EP0202564A2 (fr) * 1985-05-20 1986-11-26 Multi-Contact AG Basel Dispositif de contact électrique

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DE102019006851B3 (de) 2020-08-20
EP3800749A1 (fr) 2021-04-07

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