• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A connector for an electrical conductor (4) has a first portion (1) to be connected to another component and a second portion (2) having an end face (8) to be welded to the conductor (4) is. The end face (8) has a three-dimensional shape, which is increased in a central region (9) with respect to a central region (9) with respect to an edge region (10) surrounding the central region (9). The connecting part has a wall (14) with the end face (8), wherein a cavity (17) is arranged on the side of the wall (14) opposite the end face (8).
    公开号:AT510475A1
    申请号:T1702/2010
    申请日:2010-10-13
    公开日:2012-04-15
    发明作者:Karl Franz Ing Froeschl
    申请人:Gebauer & Griller；
    IPC主号:
    专利说明:

    13/10/2010 18:17 + 43-1-5264245 p. 03/12
    PATENTANW.BEER & PARTN ft * «· · · · · * * · t · · · ·« t »t» · * ν f »·· * · ft t - 1 -
    The invention relates to a connector for an electrical conductor having a first portion to be connected to another component and a second portion having an end surface to be welded to the conductor, the end surface having a three-dimensional shape, which in FIG a central region is increased in relation to an edge region 5 surrounding the middle region.
    The invention further relates to an electrical connection to a terminal side and an electrical conductor welded thereto, the terminal part having a first portion to be connected to another component and a second portion having an end face 10 which is welded to the conductor wherein the end face has a three-dimensional shape which is increased in a central region opposite to an edge region surrounding the middle region.
    By means of connecting parts, electrical cables are connected to other electrical components, for example batteries in motor vehicles. Essential for the quality of an electrically conductive connection between a connection part and an electrical line is the contact surface. The larger the contact area and the better the connection between the connection part and the cable, the lower the specific current load and the contact resistance given thereby. 20
    A connector of the type mentioned and an electrical connection thus produced by resistance welding is known from DE 954 805 C. This discloses to provide a cable lug with a neck which is sharpened in order to increase the resistance at the point of contact with the conductor to be connected or provided with a sharpened edge 25. Moreover, it is known from this, the tapered or reduced in cross-section end of the approach to divide by several incisions such that on the one hand the surface is increased and on the other hand, a number of other peaks or edges resulting in union of the lug extension with the conductor to be welded be included in the welding zone during resistance welding. However, since the current 30 seeks the path with the least electrical resistance, the greater portion of the current will flow through the central region of the lug lug in the region of which the conductor and / or the lug will initially melt so that the flow of current through the periphery the cable lug extension and the conductor is minimized and consequently a reliable welding of the cable lug extension to the conductor in the edge region can no longer be sufficient.
    The invention is therefore based on the object to improve a connection part and an electrical connection of the type mentioned above so that a reliable welding of the connection part takes place with the head over the entire end face or contact surface. 13/10 2010 MI 18:10 [SE / EM NO Θ050] 0003 40 13/10/2010 18:17 + 43-1-52S4245 PATENTANW.BEER & PARTN Θ4 / 12 M · · «· Φ · · φ Φ If φ · I · tt · φ · φ · φ · * * · · * * φ φ φ φ · * · φ φ φ - 2 -
    This object is achieved in a connection part of the type mentioned above in that the connecting part is hollow in the region of the end face.
    This object is further achieved with an electrical connection of the aforementioned type 5, which is characterized in that the connecting part is designed according to one of claims 1 to 9,
    Since the connecting part in the region of the end face is hollow, the current can not flow through the middle region of the connecting part as in the prior art but is forced to flow through the front wall of the Anschiusstelies from outside to inside towards the central region, whereby the In addition, the edge region of the end face is heated by the current and, moreover, a sufficiently large current flow takes place from the edge region of the connection part into the edge region of the conductor, as a result of which it is also sufficiently melted in the edge region and fused to the connection part. In a preferred embodiment of the invention, the contact surface is in the form of a spherical cap or a segment of an ellipsoid of revolution. In alternative embodiments, the contact surface is, for example, conical or pyramidal, in both cases the tip may be rounded. 20
    In a variant that is particularly easy to produce, the second section of the connecting part is formed from a flat section by embossing or deep-drawing.
    In the case of the connection according to the invention, the electrical conductor can be surrounded by a sleeve in a manner known per se in the region of its connection point to the end face. The sleeve, which is preferably also welded to the connection part in the invention, stiffens the connection region between the connection part and the electrical conductor as well as the region of the electrical conductor directly adjoining the connection point and thus provides protection, in particular kink protection, of mechanically connecting the connection more resilient 30 power.
    In the invention, it is further preferred if the sleeve is shrunk or pressed onto the conductor. This embodiment is particularly preferred but not only when the electrical conductor consists of individual wires or strands, which are stabilized by the pressed-on or shrunk-sleeve and thereby can not escape during the welding process.
    If the second portion has a face adjacent to the end face with a cylindrical outer surface, then this cylindrical portion constitutes an additional, stably interfering portion for the sleeve which further improves the kink protection of the joint. 13/10 2010 MI 18:10 [SE / EM NR 6050] @ 004 13/10/2010 18:17 + 43-1-5284245 PATENTANW.BEER & PARTN 05/12 S. ·· «· t · •« • · * · * * - 3 -
    In a particularly preferred embodiment, the connection part according to the invention is characterized in that a flange adjoins the region with the cylindrical outer surface. At this the sleeve can also be welded if necessary. The connector according to the invention can, as is known per se from the prior art, consist of copper or a copper alloy. Also, the sleeve can in the invention of copper, a copper alloy, aluminum or an aluminum alloy, as well as the electrical conductor. However, a preferred embodiment consists of a connecting part of copper or a copper alloy and an electrical conductor and a sleeve made of aluminum or an aluminum alloy.
    In order to prevent stress corrosion between individual parts, which consist of different materials as far as possible in the connector according to the invention, the sleeve may be coated at least on its inside with a lying in the electrochemical series between the material of the sleeve and the material of the electrical conductor material ,
    Further features and advantages of the invention will become apparent from the following description of a preferred embodiment of the invention with reference to the drawings. It shows: 20
    1 shows a connector according to the invention before it is connected to an electrical conductor,
    Fig. 2 shows the connector according to the invention after its connection to the electrical conductor and 25 Fig. 3, the connector according to the invention after its connection to the electrical conductor in an oblique view.
    The drawings show an embodiment of a connection part according to the invention, which essentially consists of a first section 1 and a second section 2, which is arranged at approximately right angles to the first section 1. The first section 1 has an opening 3, through which a screw, not shown, can be inserted in order to connect the Erfrndungs-like connector with another electrical component, such as a vehicle battery. 35 The second section 2 is used to connect the connection part with an electrical conductor 4, which may either be a solid conductor or may consist of several wires or strands. The electrical conductor 4 is surrounded in a known manner by an insulation 5, which ends at a certain distance in front of the end 6 of the electrical conductor. In the area without insulation 5, the electrical conductor 4 is surrounded in the illustrated Ausführungsbelspiei by a sleeve 7 40 and with this example mechanically compressed. If the sleeve 7 and the electrical 13/1 0 2010 MI 18:10 ISE / EM NR 6050] @ 005 13/10/2010 18:17 + 43-1-5264245 PATENTANW.BEER & PARTN 06/12 S. - 4 - see conductors 4 made of different materials, such as the electrical conductor of aluminum or an aluminum alloy and the sleeve 7 made of copper or a copper alloy, on the inside of the sleeve lying in the electrochemical series between these different materials coating, for example, on tin or Nickel-5 base, be appropriate.
    The sleeve 7 has a front, the end 6 adjacent and preferably flush with this front portion 7a and a remote from the end 6 rear portion 7b, to which the insulation 5 angeiießt. The rear portion 7b has an inner diameter that is smaller than the inner diameter of the front portion 7a. The same applies to the outer diameter of these two sections. By the rear portion 7b, the portion of the underlying conductor 4 is pressed together more than the area of the conductor 4 below the front portion 7a, whereby the conductor 4 is supported from the rear, while the connection part is pressed against the end face 6 during welding. 15
    The second section 2 has a projection 16 with a contact surface or end face 8 with a three-dimensional shape, which is raised in a central region 9 with respect to an edge region 10 surrounding the central region 9. The end face 8 has in the illustrated embodiment, approximately the shape of a spherical cap with a constant radius of curvature. It is within the scope of the invention, however, also possible to use other surfaces in which, for example, the radius of curvature in the central region 9 is greater than in the edge region 10 or vice versa, as would be the case for example with a segment of an ellipsoid of revolution.
    To the end face 8 includes a portion 15 with a cylindrical outer surface 11 and to this in turn a flange 12, with which an end face 13 of the sleeve 7 is welded.
    The connecting part or its projection 16 on the second section 2 is hollow in the region of the end face 8, whereby a thin wall 14 is formed whose wall thickness is preferably the same in the entire area under the end face 8. But it is also possible that the wall thickness 30 increases or decreases from the edge region 10 to the central region 9. A wall thickness increasing toward the center region 9 is advantageous, for example, if the wall 14 in the central area of the end face 8 is also at least partially fused during the welding process, since this area is exposed to the welding operation for the longest time. Because the section 2 has a cavity 17, the section 15 with the cylindrical outer surface 11 also has a defined wall thickness, which preferably corresponds to the wall thickness in the region of the end face 8. The production of this inside hollow shape of the section 2 of the connecting part can be done for example by plastic deformation of an originally flat portion 2 by means of a punch or dome. 13/10 2010 MI 18:10 [SE / EM NR 60501 ®006 40 13/10/2010 18:17 + 43-1-5254245 PATENTANW.BEER & PARTN P. 07/12
    ··· * • * *
    - 5 -
    The connection of the connecting part according to the invention with the electrical conductor 4 of the cable takes place e.g. so that first of the central region 9 is applied to the end face 6 of the electrical conductor 4 and to the connection part and the electrical conductor 4, a voltage is applied. At the same time the Anschiussteil and the electrical conductor 4 are pressed against each other. 5
    The material of the electrical conductor 4 is preferably chosen in relation to the material of the connection * element so that the electrical conductor 4 begins to melt in the region of its end face 6, but not the connecting element, so that the central region 9 in the melting electrical conductor. 4 penetrates when the two parts are pressed together. Since the central region 9 projects beyond the edge region 10, the melt of the conductor 4 begins to flow
    Drain 10 and beyond. Since the wall 14 has only a limited wall thickness, the electric current is forced to flow through the wall of the section 15 and the wall 14 from outside to inside towards the central area 9, so that a sufficient current flow is also present in the edge area 10, then that, as soon as an electrical contact with the electrical conductor 4 is present in the edge region 10, a sufficiently high current flow is also present here in order to heat the electrical conductor 4 to melting temperature in the edge region 10 or to ensure that from the central region 9 outside flowing melt does not collect in the edge region 10 and / or solidifies. In this way, a full-surface welding of the conductor 4 can be ensured with the entire end face 8, wherein the 20 intermetallic boundary layer has a uniform and very small thickness.
    The current flow is maintained until the position shown in FIG. 2 is reached, in which the connecting part abuts with its flange 12 on the end face 13 of the sleeve 7 and preferably also welds the sleeve 7 to the end face 13 with the flange 12. By 25 the portion 15 with the cylindrical outer surface 11 is a positive stabilization between the connecting part and the sleeve 7, wherein the emerging through the gap between the outer surface 11 and the inner surface of the front portion 7a and later hardening melt a mechanically stable connection between the section 2 of the connecting part and the sleeve 7 takes place, which, apart from the electrical connection to the end face 8, over 30, the sleeve 7 is also an additional electrical connection between the electrical conductor 4 and the section 2. Since the current flow is also forced through the thin wall of the section 15, this is also heated and hardening of the melt in the gap avoided before the final welding position shown in Fig. 2 has been reached. 35 The use of welding additives, which are known for the materials to be used or connected, is at the discretion of the skilled person. 13/10 2010 MI 18:10 [SE / EM NR 6050] @ 007
    权利要求:
    Claims (17)
    [1]
    13/10/2010 18:17 + 43-1-5264245 PATENTANW.BEER & PARTN 08/12 'J S. • »· · · · ···« * · I »· · · t # • · ·» « 1. Connection part for an electrical conductor (4) with a first section (1) to be connected to another component and a second section (2 5) which is to be welded to the conductor (4), wherein the end face (8) has a three-dimensional shape which in a central region (9) opposite to an edge region (10) surrounding the middle region (9). is increased, characterized in that the connecting part in the region of the end face (8) is hollow (17).
    [2]
    2. Connector according to claim 1, characterized in that the end face (8) has the shape of a spherical cap or a segment of an ellipsoid of revolution.
    [3]
    3. Connecting part according to claim 1, characterized in that the end face (8) is conical, optionally with a rounded tip.
    [4]
    4. Connecting part according to claim 1, characterized in that the end face (8) is pyramidal, optionally with a rounded tip.
    [5]
    5. Connecting part according to one of claims 1 to 4, characterized in that the second portion (2) has a to the end face (8) adjoining region (15) having a cylindrical outer surface (11).
    [6]
    6. Connecting part according to claim 5, characterized in that adjoining the region (10) with the cylindrical outer surface (11) is a flange (12).
    [7]
    7. Connector according to one of claims 1 to 7, characterized in that the second portion (2) is formed from a flat portion by embossing or deep drawing,
    [8]
    8. Connector according to one of claims 1 to 7, characterized in that it consists of copper or a copper alloy.
    [9]
    9. Connecting part according to one of claims 1 to 8, characterized in that the wall thickness 25 in the region of the end face (8) and preferably in the end face (8) adjoining region (15) is constant.
    [10]
    10. Electrical connection with a connection part and an electrical conductor welded thereto (4), wherein the connection part has a first portion (1) which is to be connected to a further component, and a second portion (2) having an end face (8) , which is welded to the conductor (4), wherein the end face (8) has a three-dimensional shape, which is increased in a central region (9) with respect to an edge region (10) surrounding the central region (9), characterized in that Connecting part is designed according to one of claims 1 to 9.
    [11]
    11. Electrical connection according to claim 10, characterized in that the conductor 35 (4) is surrounded at its end connected to the connecting part of a Hüise (7).
    [12]
    12. Electrical connection according to claim 11, characterized in that the sleeve (7) is shrunk or pressed onto the conductor (4),
    [13]
    13. Electrical connection according to claim 11 or 12, characterized in that the 13/10 2010 MI 18:10 [SE / EM NR 6050] 0008 13/16/2010 18:17 + 43-1-5264245 PATENT ANW.BEER & PARTNERS P. 09/12 '7 13/16/2010 18:17 + 43-1-5264245 PATENT ANW.BEER & PARTN P. 09/12' 7

    Sleeve has a front section (7a) adjacent to the connecting part and a rear section (7b) remote from the connecting part, and in that the inner diameter of the front section (7a) is greater than the inner diameter of the rear section (7b) is.
    [14]
    14. Electrical connection according to one of claims 11 to 13, characterized in that the sleeve (5) is welded to the edge region (10), preferably by resistance welding.
    [15]
    15. Electrical connection according to one of claims 11 to 14, characterized in that the sleeve (7) consists of copper, a copper alloy, aluminum or an aluminum alloy.
    [16]
    16. Electrical connection according to one of claims 11 to 15, characterized in that the sleeve (7) coated at least on its inner side with a in the electrochemical series of voltages between the material of the sleeve (7) and the material of the conductor (4) lying material is.
    [17]
    17. Electrical connection according to one of claims 1 to 16, characterized in that the conductor (4) consists of copper, a copper alloy, aluminum or an aluminum alloy. 13/10 2010 MI 18:10 ISE / EM NR 60301 tg] 009
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    AT510475B1|2013-02-15|
    US9225076B2|2015-12-29|
    CN103201909A|2013-07-10|
    DE112011103488A5|2013-08-08|
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    WO2012048354A1|2012-04-19|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA1702/2010A|AT510475B1|2010-10-13|2010-10-13|CONNECTING PART FOR AN ELECTRIC LADDER|ATA1702/2010A| AT510475B1|2010-10-13|2010-10-13|CONNECTING PART FOR AN ELECTRIC LADDER|
    PCT/AT2011/000417| WO2012048354A1|2010-10-13|2011-10-06|Connection element for an electrical conductor|
    US13/879,449| US9225076B2|2010-10-13|2011-10-06|Connection element for an electrical conductor|
    DE112011103488.1T| DE112011103488B4|2010-10-13|2011-10-06|Connector for an electrical conductor|
    CN201180049269.3A| CN103201909B|2010-10-13|2011-10-06|Connection member for electric conductor|
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