EP3474391A1 - Procédé de raccordement d'au moins deux fils à plusieurs brins au moyen d'ultrasons - Google Patents

Procédé de raccordement d'au moins deux fils à plusieurs brins au moyen d'ultrasons Download PDF

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Publication number
EP3474391A1
EP3474391A1 EP17197426.4A EP17197426A EP3474391A1 EP 3474391 A1 EP3474391 A1 EP 3474391A1 EP 17197426 A EP17197426 A EP 17197426A EP 3474391 A1 EP3474391 A1 EP 3474391A1
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EP
European Patent Office
Prior art keywords
strands
fanning
strand
plane
compression space
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.)
Granted
Application number
EP17197426.4A
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German (de)
English (en)
Other versions
EP3474391B1 (fr
Inventor
Peter Solenthaler
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.)
Telsonic Holding AG
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Telsonic Holding AG
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Publication date
Application filed by Telsonic Holding AG filed Critical Telsonic Holding AG
Priority to EP17197426.4A priority Critical patent/EP3474391B1/fr
Publication of EP3474391A1 publication Critical patent/EP3474391A1/fr
Application granted granted Critical
Publication of EP3474391B1 publication Critical patent/EP3474391B1/fr
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    • 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
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
    • H01R43/0207—Ultrasonic-, H.F.-, cold- or impact welding
    • 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
    • H01R4/02—Soldered or welded connections
    • H01R4/021—Soldered or welded connections between two or more cables or wires

Definitions

  • the invention Method for connecting, in particular welding and / or soldering, at least two stranded strands by means of ultrasound.
  • a generic method is for example in the DE 197 23 215 A1 which discloses connection methods and connection arrangements for insulated lines or cables.
  • two insulated lines are crossed at a crossing angle, clamped between two resin plates and then subjected to ultrasound.
  • the core wires are to be loosely released or loosened, and the loosened or loosened core wires are gradually spread in a flat shape, and the lead wire parts of both insulated wires should be in contact with each other at plural points, thereby providing a connection state with an excellent electric current-carrying property and with to be obtained with a low contact resistance.
  • Similar procedures are also in DE 197 23 242 A1 and DE 198 39 220 A1 disclosed.
  • connection node is electrically insulated due to the surrounding resin platelets, so it can not be electrically connected to other electrical conductors.
  • the WO 2015/007619 A1 discloses a method of manufacturing a knot by welding a first strand comprising at least one single wire with a second strand of different materials comprising at least one single wire in a height and width adjustable compression space of an ultrasonic welding apparatus.
  • the at least one first strand is inserted into the compression space and their individual wires then welded to a sub-node.
  • the compression space is opened, placed at least a second strand in the compression space on the sub-node and then welded after closing the compression space the at least one second strand with the sub-node.
  • a first strand is inserted without special pretreatment in the compression space and then adjusted its width, whereby the first strand is compressed in the horizontal direction.
  • the also substantially horizontal connection surface is reduced, at which the two strands come into contact with each other and welded together.
  • the first strand frayed in the horizontal compression in an uncontrolled manner in the vertical direction, whereby the welding energy can not be reliably homogeneously introduced.
  • the result is connections with pull-off forces and peeling forces, which are low and also subject to significant fluctuations. Overall, this method is therefore error-prone.
  • the connecting nodes formed between the strands should not be electrically insulated and / or take-off forces and peeling forces should be achieved which are as large as possible and moreover are subject to as small fluctuations as possible. This should be possible in particular for the largest possible strand cross sections.
  • a fanning out of a stranded strand in step a) is understood here and below to mean that a width of the stranded cross-section of the strand running parallel to the fanning-out plane is increased, for example by at least 10%, preferably at least 20%, particularly preferably at least 25%.
  • step a) Due to the fanning out in step a) is in contrast to the above WO 2015/007619 A1 reaches an enlarged connection surface at which the at least two strands come into contact with each other and can be connected together in the later step c).
  • the positioning of the strands in the compression space is simpler and more defined than is possible, for example, with strands which have a substantially circular cross-section and are stacked one above the other in the compression space.
  • the individual wires of the fanned strands when connecting in step c) interlock with each other, which also contributes to increasing the stability of the connection.
  • the strands are inserted into a compression space of an ultrasonic connecting device, so that at least two of the strands substantially along the fanning level are in contact with each other.
  • the ultrasonic connecting device may be an ultrasonic welding device.
  • the strands are first inserted into the compression space and then fanned out.
  • a tool can be used, which can be introduced directly into the compression chamber. It is conceivable that initially only a first strand is inserted into the compression space and then fanned there and then placed a second strand in the compression space and on the first already fanned strand and then fanned out as well.
  • the strands are first fanned out and then inserted into the compression space.
  • a first strand is fanned out after insertion into the compression space and a second strand is fanned out already prior to insertion into the compression space.
  • the strands can be connected to a very homogeneous distribution of the bonding energy, in particular the welding energy and / or the soldering energy.
  • This results in high and also uniformly high pull-off forces and peeling forces, as can be determined in an optional, subsequent quality assessment.
  • the pull-off forces could be increased by up to 30%. The process is thus less error-prone.
  • the connection achieved a high quality.
  • connection force and connection energy required for the connection can be reduced, since part of the deformation work has already been introduced into the strands during the fanning out.
  • a reduction of the connection force and connection energy required for the connection is particularly advantageous for strands with large strand cross-sections.
  • at least one of the strands, preferably all strands have a strand cross-section of more than 1 mm 2 , preferably more than 10 mm 2 , particularly preferably more than 25 mm 2 .
  • the total strand cross-section of the strands may be more than 4 mm 2 , preferably more than 40 mm 2 , more preferably more than 100 mm 2 .
  • the duration of the process can be reduced.
  • step a) at least one of the strands, preferably all the strands are additionally compressed.
  • Compressing the strand is understood here and below as meaning that a height of the strand cross section of the strand perpendicular to the fanning plane is reduced, for example by at least 10%, preferably at least 20%, particularly preferably at least 25%.
  • the compression can be perpendicular or oblique to the fanning plane.
  • a per se known tool can be used, such as a press, which may optionally contain a suitable tool attachment.
  • the press can be a pneumatically driven crimping pliers.
  • the tool may be installed on or in the ultrasonic bonding device. It can also be a separate tool.
  • At least one of the strands may be made of aluminum or copper or another non-ferrous metal.
  • at least one first strands may consist of copper and at least one second strands of aluminum.
  • the compression space is limited by a working surface of an excitable ultrasonic vibrations sonotrode, a work surface an anvil and side surfaces of two side boundary elements.
  • the strands are inserted into the compression space such that the fanning plane runs parallel to the working surface of the sonotrode and to the working surface of the anvil. If the sonotrode and the anvil are pressed against each other in step c) with a connecting force which is perpendicular to their working surfaces, the connecting force also runs perpendicular to the fanning plane.
  • a particularly stable connection also results if at least in step c) all strands are arranged along a direction perpendicular to the fanning plane. Thus, for example, no two strands are adjacent in a direction parallel to the fanning plane.
  • the strands can be arranged at least in step c) at an angle and connected to each other, which is less than 30 °, preferably less than 15 °, more preferably less than 5 °.
  • each four strands 30 are shown on the left and right, each of which are arranged along one direction and have parallel longitudinal axes, that are arranged at an angle of 0 ° to each other.
  • the strands 30 may for example consist of aluminum or copper or another non-ferrous metal and have a strand cross section of 25 mm 2 , so that in each case a total strand cross section of 100 mm 2 results.
  • FIGS. 2a, 2b and 4 a known per se ultrasonic welding device 10 for welding the strands 30 is shown.
  • This contains a compression space 11, which is bounded by the working surface 13 of a sonotrode 12, the working surface 15 of an anvil 14 and side surfaces 18 of two side boundary elements 16, 17.
  • the left side limiting element 16 is in the horizontal direction relative to the sonotrode 12 slidably disposed while the right side limiting element 17 is slidably disposed in the vertical direction relative to the sonotrode 12.
  • the anvil 14 is slidably disposed in the horizontal direction relative to the right side limiting element 17.
  • the four in FIG. 1 left and in FIG. 2a The strands 30 shown have not previously been fanned out according to a conventional method and therefore still have their original, substantially circular strand cross-section. In this form and arrangement, the strands are difficult, but at least not reliably positionable in the compression space 11 in a defined manner. In addition, the connection surface at which the strands 30 come into contact with each other and welded together, is very small.
  • the strands 30 were placed in a step b) on the working surface 13 of the sonotrode 12 that the fanning plane E parallel to the working surface 13 of the sonotrode 12 and the working surface 15 of the anvil 14 extends.
  • the sonotrode 12 and the anvil 14 are pressed against each other in step c) with a connecting force which is perpendicular to their working surfaces 13, 15, so that the connecting force is also perpendicular to the fanning planes E. All Four strands 30 are arranged along this direction of the connection force.
  • connection surface at which the strands 30 come into contact with each other and welded together significantly larger when the strands 30 as in FIG. 2b previously fanned out.
  • the ultrasonic vibrations introduced by the sonotrode 12 can thus penetrate into and penetrate the composite of the strands 30 more efficiently and more homogeneously.
  • the strands 30 can be connected to a very homogeneous distribution of the welding energy. Consequently, there are high and also consistently high pull-off forces and peel forces, as can be determined in an optional, subsequent quality assessment. The process is thus less error-prone.
  • the connection force and welding energy required for the welding can be reduced, which is advantageous in particular for strands 30 with large strand cross-sections. Optically, the connection achieved a high quality.
  • FIG. 3 four strands 30 are shown in a second arrangement, in which two lower strands 30 side by side and above two upper strands 30 are arranged side by side. Analogous to the FIGS. 1 left and 2a, the four were in the FIGS. 3 and 4 shown strands 30 according to a conventional method not previously fanned and therefore still have their original, substantially circular Litzenquerites.
  • each of strands 30 shown side by side are insufficiently connected to each other, since their connection surfaces are parallel to the direction of the connecting force, in which the sonotrode 12 and the anvil 14 are pressed against each other.
  • there is a gap 31 between the strands 30 At this point, the weld joint can be particularly unstable.
  • a tool 50 suitable for fanning out and compressing according to the invention is shown.
  • This includes a stand 51 with a support surface 52 for one or more strands 30 and a ram 53 with a parallel to the support surface 52 arranged pressing surface 54.
  • the ram 53 is pneumatically relative to the stand 51 in a direction R movable at an angle ⁇ to Support surface 52 and the pressing surface 54 extends.
  • the strand 30 is clamped between the support surface 52 and the pressing surface 54 and thus fanned out in a defined by the support surface 52 and the pressing surface 54 fanning plane E and compressed at an angle ⁇ to it.
EP17197426.4A 2017-10-20 2017-10-20 Procédé de raccordement d'au moins deux fils à plusieurs brins au moyen d'ultrasons Active EP3474391B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17197426.4A EP3474391B1 (fr) 2017-10-20 2017-10-20 Procédé de raccordement d'au moins deux fils à plusieurs brins au moyen d'ultrasons

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17197426.4A EP3474391B1 (fr) 2017-10-20 2017-10-20 Procédé de raccordement d'au moins deux fils à plusieurs brins au moyen d'ultrasons

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EP3474391A1 true EP3474391A1 (fr) 2019-04-24
EP3474391B1 EP3474391B1 (fr) 2020-02-12

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023006210A1 (fr) * 2021-07-29 2023-02-02 Schunk Sonosystems Gmbh Procédé de soudage par ultrasons et pièce de soudage par ultrasons

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19723242A1 (de) 1996-06-04 1997-12-11 Yazaki Corp Verbindungsstruktur für ummantelte Leitungen
DE19723215A1 (de) 1996-06-04 1997-12-11 Yazaki Corp Verbindungsverfahren und Verbindungsanordnung für isolierte Leitungen oder Kabel
DE19839220A1 (de) 1997-08-29 1999-03-11 Yazaki Corp Verbindungsstruktur für einen abgeschirmten Draht und Bearbeitungsverfahren dafür
JP2007134307A (ja) * 2005-07-19 2007-05-31 Yazaki Corp 電線接続方法
JP2007149421A (ja) * 2005-11-25 2007-06-14 Yazaki Corp 超音波接合方法及びその装置並びに電線束
JP2010044887A (ja) * 2008-08-11 2010-02-25 Autonetworks Technologies Ltd ワイヤーハーネスおよびその製造方法ならびに絶縁電線の接続方法
US20110198122A1 (en) * 2010-02-16 2011-08-18 Hitachi Cable, Ltd. Electric wire with terminal and method of manufacturing the same
WO2015007619A1 (fr) 2013-07-18 2015-01-22 Schunk Sonosystems Gmbh Procédé de fabrication d'un nœud par soudage avec la même largeur pour deux soudures

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19723242A1 (de) 1996-06-04 1997-12-11 Yazaki Corp Verbindungsstruktur für ummantelte Leitungen
DE19723215A1 (de) 1996-06-04 1997-12-11 Yazaki Corp Verbindungsverfahren und Verbindungsanordnung für isolierte Leitungen oder Kabel
DE19839220A1 (de) 1997-08-29 1999-03-11 Yazaki Corp Verbindungsstruktur für einen abgeschirmten Draht und Bearbeitungsverfahren dafür
JP2007134307A (ja) * 2005-07-19 2007-05-31 Yazaki Corp 電線接続方法
JP2007149421A (ja) * 2005-11-25 2007-06-14 Yazaki Corp 超音波接合方法及びその装置並びに電線束
JP2010044887A (ja) * 2008-08-11 2010-02-25 Autonetworks Technologies Ltd ワイヤーハーネスおよびその製造方法ならびに絶縁電線の接続方法
US20110198122A1 (en) * 2010-02-16 2011-08-18 Hitachi Cable, Ltd. Electric wire with terminal and method of manufacturing the same
WO2015007619A1 (fr) 2013-07-18 2015-01-22 Schunk Sonosystems Gmbh Procédé de fabrication d'un nœud par soudage avec la même largeur pour deux soudures

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023006210A1 (fr) * 2021-07-29 2023-02-02 Schunk Sonosystems Gmbh Procédé de soudage par ultrasons et pièce de soudage par ultrasons

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