EP0876690B1 - Kontaktelement für einen elektrischen leiter - Google Patents
Kontaktelement für einen elektrischen leiter Download PDFInfo
- Publication number
- EP0876690B1 EP0876690B1 EP96937330A EP96937330A EP0876690B1 EP 0876690 B1 EP0876690 B1 EP 0876690B1 EP 96937330 A EP96937330 A EP 96937330A EP 96937330 A EP96937330 A EP 96937330A EP 0876690 B1 EP0876690 B1 EP 0876690B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact element
- electrical conductor
- conductor
- contact
- bending
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
- H05B3/32—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulators on a metallic frame
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
- H05B3/06—Heater elements structurally combined with coupling elements or holders
Definitions
- the invention relates to a contact element for an electrical conductor, in particular a Heating wire in a device for personal use, such as a hair dryer, a Lokken brush, a kitchen appliance or the like.
- the contact element consists essentially from a base body with at least one contact surface for connecting the electrical conductor and a clamp body for fastening the electrical conductor, wherein the clamping body with the electrical conductor is generated by the introduction of heat material connection.
- connection element for an electrical motor vehicle switch lighting known.
- This connector has a connector notch for a connecting wire, the side walls of which can be acted upon by welding clamps are. The boundary walls were squeezed in and over them Welding current initiated, in the area of the connection notch base to a superficial Melting of the connecting wire leads.
- the object of the present invention is to provide a possibility for long-term stable contacting for an electrical conductor, in particular a resistance heating wire in hair dryer heaters specify, the contact element also for fully automatic Manufacture of resistance heating should be suitable.
- the invention solves this problem with a contact element of the type described above in that the material connection of the conductor to at least a third of the line cross-section enforced.
- Such a connection advantageously has high stability and reliability a welded joint, while avoiding the disadvantageous reduction in cross-section, as is common in resistance welding. A change in There is no contact resistance, not even due to aging.
- Such a redesigned one Contact element can advantageously be used both as a terminal or as a voltage tap Center tap, or also designed as a single or double tap for several heating wires and be attached to a micanite plate. This new design of the contact element is advantageously particularly suitable for the production of bifilar wound heaters.
- This solution creates a permanent connection between the contact element and the leader, i.e. created the heating wire, which makes good contact without one material weakening of the conductor guaranteed.
- the contact area is through a U-shaped recess formed with a rounded or angular bottom area, so that a simple Manufacture of the contact element, also in larger numbers, for example as Stamped part from a sheet-like base body is made possible.
- the punching tool can be the bottom area of the recess Cross section of the heating wire to be adapted.
- the largest width of the recess of the contact element is chosen so that it approximately the diameter of the electrical conductor or the largest width of the conductor cross section corresponds. This advantageously ensures an exact fixation of the wire in the recess enables, regardless of the cross-sectional shape of the wire, which, for example can be circular or rectangular.
- the clamping body is integrally connected to the base body, this can be used as one Leg of the U-shaped recess of the base body can be formed, whereby advantageously simple and inexpensive manufacture of the contact element, for example as a stamped part made of a flat sheet metal.
- the clamping body is designed as a bending tab with a thickening at its free end, so that the heating wire to be fastened advantageously through the bending tab can first be mechanically clamped before it is melted by the introduction of heat becomes.
- the bending tab has at least one nose or a nose-like edge for attaching a bending agent, so that the bending process can advantageously also be carried out fully automatically.
- the sling By designing the sling as a recess, bore, centering point or Similar is a simple manufacture of the sling, for example by punching technology possible.
- a threading aid is provided, in particular for automatic and correct feeding of the heating wire to the contact surface to classify. This ensures a safe and reproducible production of the Contact element guaranteed.
- fastening means are provided, for example a tab, a pin or the like for attaching the contact element to one Arrange carrier.
- the carrier can advantageously be the heating carrier in one Be a hair dryer.
- the process also can represent an independent invention, it is provided that the electrical conductor materially connectable, in particular fusible, to the contact element by introducing heat is, through the introduction of heat, the material connection the conductor penetrated at least a third of its cross-section.
- connection is advantageously produced in a manner which is very gentle on the material, i.e. the The conductor or heating wire is not partially overheated as in the resistance welding process and embrittled. Such a process can also be used on several in production Contact elements are made.
- the heat is introduced by a spot welding process, in particular a laser, a plasma or similar process.
- a spot welding process in particular a laser, a plasma or similar process.
- a contact element on the provided clamping body by means of a bending process around the on a contact surface of the contact element adjacent electrical conductor is formable. This will initially fast and secure mechanical clamping of the conductor, i.e. of the heating wire allows the contact element.
- a bending means is on the nose-like edge of the Clamping body attached, which advantageously a fully automatic bending of the Clamping body around the heating wire is made possible.
- a laser beam is applied to the thickening of the sprag directed. This will easily melt the Clamping body reached, which wraps around the wire as a melt and this permanently connects with the contact element.
- the energy of the laser beam is dimensioned so that it at least the heating wire partially heated, so that the wire is preferably one third of the Wire cross section is meltable. This advantageously creates a connection generated between the contact element and the heating wire, which is very gentle on the material, i.e. there is no reduction in cross section, the contact resistance does not changed and the melting point does not become brittle.
- a contact element 2 (FIG. 1) essentially consists of a base body 4, which is made of a flat and electrically conductive sheet, for example is punched out. Such a contact element 2 is at its lower end, which is the Not shown for simplicity, with a power supply, an electrical Consumer or another electrical component connected. On his upper end, the contact element 2 has a U-shaped recess 10, which is provided at its bottom with a contact surface 6. The maximum width 12 of the Recess 10 is dimensioned such that an electrical conductor to be connected, for example a heating wire can be inserted into this recess 10. The recess 10 is limited on one side by a bendable clamping body 8, the one Neck 14 and a head-like thickening 16 at its outer end. At the Thickening 16 is arranged on the outside of a nose 18 which engages to facilitate an automatic bending device, not shown.
- the second leg of the recess 10 is formed by a centering tip 20, which on the one hand projects beyond the clamping body 8 and on the other hand with a threading bevel 22 is provided.
- This threading chamfer 22 is intended to be a safe and simple one Introducing a heating wire into the recess 10 in a fully automated manufacturing process of the contact element or the hair dryer heating.
- a laterally protruding pin 24 is provided for fastening the contact element 2 in a carrier, for example a heating carrier. This can also be done by laterally adjacent notches are slightly bent out of the main plane of the base body 4 and thus point in a direction 90 ° to the surface of the base body 4.
- the contact surface 6 (FIG. 2) of the contact element 2 has at least some areas semicircular formation, in which a heating wire 26 with a circular cross section is inserted.
- a heating wire 26 with a circular cross section is inserted.
- the clamp body 8 is bent around the heating wire 26 so that the head-like thickening 16 of the clamping body 8 on the opposite wall of the Recess below the threading slope 22 comes to rest. This bending process can be done either by hand or in a fully automated process be carried out.
- the heating wire 26 is at least partially, preferably about a third of its wire cross-section melted. As a result, the heating wire 26 is complete surrounded the contact element 2.
- Such a connection has a high stability and reliability while avoiding a reduction in cross section or also a change in the contact resistance.
- a contact element 2 described can be used, for example, in the case of a hair dryer heater be designed as a voltage tap either as an end tap or as a center tap; it can continue to connect and attach a single filament, or also as a double tap for connecting several, for example two, heating wires (Fig. 4) be formed.
- Such a contact element 30 consists essentially of a base body 32, the lower end of which is not shown for the sake of simplicity.
- a fastening pin 34 is provided in this base body 32, for example punched out.
- At the upper end of the contact element 30 are two clamping bodies 36, 38 provided by a symmetrical, centrally arranged centering tip 40 are separated from each other.
- the centering tip 40 has two threading bevels on both sides 42, 44 provided which in U-shaped recesses for receiving the heating wires 46, 48 lead.
- the clamp body 36, 38 correspond in their training to the clamp body 8 in Fig. 1.
- the clamping body 36 is shown in its original position; the Clamping body 38, however, is already bent around the heating wire 48 and to Fusion with the heating wire 48 prepared.
Landscapes
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Resistance Heating (AREA)
- Details Of Resistors (AREA)
- Lead Frames For Integrated Circuits (AREA)
- Conductive Materials (AREA)
- Contacts (AREA)
Description
- Fig. 1
- ein Kontaktelement für einen Heizdraht in der Draufsicht und in stark vergrößerter Darstellung,
- Fig. 2
- ein Kontaktelement nach Fig. 1, jedoch mit eingelegtem Heizdraht,
- Fig. 3
- ein Kontaktelement nach Fig. 2 mit einem befestigten Heizdraht und
- Fig. 4
- ein Kontaktelement für zwei Heizdrähte in der Draufsicht.
Claims (18)
- Kontaktelement für wenigstens einen elektrischen Leiter, insbesondere einen Heizdraht (26,46,48) in einem Gerät des persönlichen Bedarfs, wie einem Haartrockner, einer Lockenbürste, einem Küchengerät o.ä., aus einem Grundkörper (4,32) mit wenigstens einer Kontaktfläche (6) zur Verbindung und einem Klemmkörper (8,36,38) zur Befestigung des elektrischen Leiters (26,46,48), wobei der Klemmkörper (8,36,38) mit dem elektrischen Leiter (26,46,48) eine durch Wärmeeinbringung erzeugte stoffliche Verbindung, insbesondere eine Schmelzverbindung aufweist, dadurch gekennzeichnet, daß die stoffliche Verbindung den Leiter (26,46,28) wenigstens zu einem Drittel des Leiterquerschnittes durchsetzt.
- Kontaktelement nach Anspruch 1, dadurch gekennzeichnet, daß die Kontaktfläche (6) durch eine U-förmige Ausnehmung (10) mit einem rundlichen oder eckigen Bodenbereich gebildet wird.
- Kontaktelement nach Anspruch 2, dadurch gekennzeichnet, daß die größte Breite (12) der Ausnehmung (10) etwa dem Durchmesser des elektrischen Leiters (26,46,48) oder der größten Breite des Leiterquerschnitts entspricht.
- Kontaktelement nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Klemmkörper (8,36,38) einstückig mit dem Grundkörper (4,32) verbunden und als ein Schenkel der U-förmigen Ausnehmung (10) ausgebildet ist.
- Kontaktelement nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Klemmkörper (8,36,38) als Biegelasche mit einem Hals (14) und einer Verdickung (16) an seinem freien Ende ausgebildet ist.
- Kontaktelement nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Biegelasche wenigstens eine Nase (18) zum Ansetzen eines Biegemittels aufweist.
- Kontaktelement nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Verdickung (16) der Biegelasche mit dem Leiter (26,46,48) eine stoffliche Verbindung aufweist.
- Kontaktelement nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß Anschlagmittel, insbesondere zur automatischen Ausrichtung des Kontaktelements (2,30) in einer Erwärmungseinrichtung, vorgesehen sind.
- Kontaktelement nach Anspruch 8, dadurch gekennzeichnet, daß als Anschlagmittel eine Ausnehmung, eine Bohrung, eine Zentrierspitze (20,40) o.ä. vorgesehen ist.
- Kontaktelement nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß eine Einfädelhilfe, insbesondere zur automatischen und lagerichtigen Zuführung des Drahtes (26,46,48) zu der Kontaktfläche (6), vorgesehen ist.
- Kontaktelement nach Anspruch 10, dadurch gekennzeichnet, daß wenigstens an einem Schenkel der U-förmigen Ausnehmung (10) eine Einfädelschräge (22,42,44) vorgesehen ist.
- Kontaktelement nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß Befestigungsmittel, beispielsweise eine Lasche, ein Zapfen (24,34) o. ä. zur Befestigung des Kontaktelementes (2,30) an einem Träger, insbesondere einem Heizungsträger, vorgesehen sind.
- Verfahren zur Befestigung eines elektrischen Leiters, insbesondere eines Heizdrahtes (26,46,48) in einem Gerät des persönlichen Bedarfs, wie einem Haartrockner, einer Lockenbürste, einem Küchengerät o. ä. an einem Kontaktelement (2,30) nach einem der vorhergehenden Ansprüche, wobei der elektrische Leiter (26,46,48) mit dem Kontaktelement (2,30) durch Wärmeeinbringung stofflich verbindbar, insbesondere verschmelzbar ist, dadurch gekennzeichnet, daß durch die Wärmeeinbringung die stoffliche Verbindung den Leiter wenigstens zu einem Drittel seines Querschnittes durchsetzt.
- Verfahren nach Anspruch 13, dadurch gekennzeichnet, daß die Wärmeeinbringung durch ein Punkt-Schweißverfahren, insbesondere ein Laser-, ein Plasma- oder ein ähnliches Verfahren erfolgt.
- Verfahren nach Anspruch 13 oder 14, dadurch gekennzeichnet, daß ein an dem Kontaktelement (2,30) vorgesehener Klemmkörper (16,36,38) mittels eines Biegeverfahrens um den an einer Kontaktfläche (6) des Kontaktelements (2,30) anliegenden elektrischen Leiter (26,46,48) formbar ist.
- Verfahren nach einem der Ansprüche 13 bis 15, dadurch gekennzeichnet, daß ein Biegemittel an einer Nase (18) des Klemmkörpers (8) ansetzbar ist.
- Verfahren nach einem der Ansprüchen 13 bis 16, dadurch gekennzeichnet, daß man einen Laserstrahl auf eine Verdickung (16) des Klemmkörpers (8) richtet.
- Verfahren nach einem der Ansprüchen 13 bis 17, dadurch gekennzeichnet, daß durch den Laserstrahl der elektrische Leiter (26,46,48) wenigstens bereichsweise, vorzugsweise ein Drittel des Leiterquerschnitts, aufschmelzbar ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19602591A DE19602591A1 (de) | 1996-01-25 | 1996-01-25 | Kontaktelement für einen elektrischen Leiter |
DE19602591 | 1996-01-25 | ||
PCT/EP1996/004760 WO1997027647A1 (de) | 1996-01-25 | 1996-11-02 | Kontaktelement für einen elektrischen leiter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0876690A1 EP0876690A1 (de) | 1998-11-11 |
EP0876690B1 true EP0876690B1 (de) | 2000-07-26 |
Family
ID=7783628
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96937330A Expired - Lifetime EP0876690B1 (de) | 1996-01-25 | 1996-11-02 | Kontaktelement für einen elektrischen leiter |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0876690B1 (de) |
AT (1) | ATE195038T1 (de) |
AU (1) | AU7496996A (de) |
DE (2) | DE19602591A1 (de) |
WO (1) | WO1997027647A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016100561A1 (de) | 2016-01-14 | 2017-07-20 | Pac Tech - Packaging Technologies Gmbh | Verfahren zur Platzierung und Kontaktierung eines Prüfkontakts |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE378542C (de) * | 1923-07-18 | Bbc Brown Boveri & Cie | Elektrische Verbindung fuer hohe Temperaturen | |
US2794176A (en) * | 1953-05-21 | 1957-05-28 | Utica Drop Forge & Tool Corp | Terminal construction |
DE2953859C2 (de) * | 1979-01-15 | 1984-01-12 | Fritz Eichenauer GmbH & Co KG, 6744 Kandel | Abgriffselement für elektrische Heizgeräte |
DE3028570A1 (de) * | 1980-07-28 | 1982-03-04 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zum kontaktieren von halbleiterbauelementen |
DE4122429A1 (de) * | 1991-07-06 | 1993-01-07 | Swf Auto Electric Gmbh | Elektrisches geraet, insbesondere fuer kraftfahrzeuge |
-
1996
- 1996-01-25 DE DE19602591A patent/DE19602591A1/de not_active Ceased
- 1996-11-02 AT AT96937330T patent/ATE195038T1/de not_active IP Right Cessation
- 1996-11-02 DE DE59605661T patent/DE59605661D1/de not_active Expired - Fee Related
- 1996-11-02 WO PCT/EP1996/004760 patent/WO1997027647A1/de active IP Right Grant
- 1996-11-02 AU AU74969/96A patent/AU7496996A/en not_active Abandoned
- 1996-11-02 EP EP96937330A patent/EP0876690B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
AU7496996A (en) | 1997-08-20 |
DE59605661D1 (de) | 2000-08-31 |
DE19602591A1 (de) | 1997-07-31 |
ATE195038T1 (de) | 2000-08-15 |
WO1997027647A1 (de) | 1997-07-31 |
EP0876690A1 (de) | 1998-11-11 |
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