EP0615651A1 - Kontaktstück mit einer schaltsilber-kontaktauflage und verfahren zu seiner herstellung. - Google Patents
Kontaktstück mit einer schaltsilber-kontaktauflage und verfahren zu seiner herstellung.Info
- Publication number
- EP0615651A1 EP0615651A1 EP92923688A EP92923688A EP0615651A1 EP 0615651 A1 EP0615651 A1 EP 0615651A1 EP 92923688 A EP92923688 A EP 92923688A EP 92923688 A EP92923688 A EP 92923688A EP 0615651 A1 EP0615651 A1 EP 0615651A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- silver
- contact
- solder
- plate
- layer
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/021—Composite material
- H01H1/023—Composite material having a noble metal as the basic material
- H01H1/0231—Composite material having a noble metal as the basic material provided with a solder layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
- H01H11/041—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion
- H01H11/045—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion with the help of an intermediate layer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49204—Contact or terminal manufacturing
- Y10T29/49208—Contact or terminal manufacturing by assembling plural parts
- Y10T29/4921—Contact or terminal manufacturing by assembling plural parts with bonding
- Y10T29/49211—Contact or terminal manufacturing by assembling plural parts with bonding of fused material
- Y10T29/49213—Metal
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53796—Puller or pusher means, contained force multiplying operator
- Y10T29/53896—Puller or pusher means, contained force multiplying operator having lever operator
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53796—Puller or pusher means, contained force multiplying operator
- Y10T29/53896—Puller or pusher means, contained force multiplying operator having lever operator
- Y10T29/539—Plier type means
Definitions
- the invention relates to a contact piece with a switching silver contact pad, which is soldered onto a contact carrier by means of an intermediate silver layer and a solder, and to a method for its production.
- Such contact pieces are used in relays and switches of various types, among others.
- solders required for soldering are available as flat material in specialist shops. They already contain metered surcharges for soldering aids. It is known to connect strips of contact silver and pure silver to one another by hot rolling and then to roll the flat solder material as a third layer onto this two-layer strip. The contacts are then cut off from the three-layer tape produced in this way and soldered onto the contact carriers. It is a peculiarity of this manufacturing process that the rolling edges have to be trimmed so that waste is produced. Also, the cutting off of the contacts becomes increasingly problematic with larger contact strengths.
- the invention is therefore based on the object of indicating a way in which the production of contact pieces can be simplified without impairing the quality.
- the position of the solder on the silver intermediate layer of the two-layer contact should remain reliably guaranteed.
- creeping up of the solder onto the switching silver contact pad when soldering to the contact carrier is to be prevented.
- this object is achieved according to the invention in that the solder is attached to the intermediate silver layer in the form of a plate before the actual soldering process. As a result, the solder remains reliably on the the silver intermediate layer is positioned without slipping or falling off prematurely, i.e. before the contact carrier is soldered on. In this way, a prerequisite for reliable handling of the parts to be soldered to one another is created.
- this object is achieved in that the silver intermediate layer is pressed onto the switching silver contact pad and then the solder is attached to the silver intermediate layer in the form of a plate and then the contact carrier is placed on the solder plate and soldered.
- This sequence in the manufacturing process ensures reliable manufacture of the contact pieces with regard to the position of the soldering pad and with regard to the quality of the soldering process. At the same time, it reduces the cost of the manufacturing process.
- soldering plate before the soldering is in a further development of the invention in a recess of the silver intermediate layer.
- the soldering plate encloses the edge of the intermediate silver layer resting on the contact carrier during the soldering process sen and cannot easily flow away to the side.
- This depression can be produced by a press or embossing cut.
- the solder plate can be stapled by welding.
- the ultrasound welding of the solder plate on the silver intermediate layer has proven to be particularly advantageous, since this prevents the solder plate from heating up. The latter could otherwise reduce the quality of the subsequent soldering.
- the solder plate can be pressed onto the intermediate silver layer during the ultrasound welding via a pressure plate with small punctiform elevations.
- the lateral sealing of the solder plate through the intermediate silver layer thus produced prevents the solder from flowing out laterally when soldering to the contact carrier, because the solder is bound in the edge material of the intermediate silver layer. This also prevents the solder material from creeping up on the sides of the switching silver during soldering. Ultimately, this step can replace a separate pre-embossing of the silver interlayer.
- Figure 1 is an exploded view of the contact piece
- Figure 2 is a side view of the two-layer contact
- Figure 3 is a view of the two-layer contact after the ultrasonic welding of the solder
- Figure 4 is a side view of the finished three-layer contact before soldering onto the contact carrier.
- Figure 1 shows the structure of the contact piece 1 in an exploded view. It consists of a contact silver contact pad 2, an intermediate silver layer 4, a solder plate 6 and a contact carrier 8.
- the contact silver contact pad 2 consists of a known contact silver alloy. In the exemplary embodiment, it has the shape of a rectangular plate with the dimensions of the subsequent contact. However, it could just as well have the shape of a flat round disk or a hemispherical dome.
- the silver intermediate layer 4 can be seen in FIG. 1, the dimensions of which are matched to the outline of the switching silver contact pad 2.
- the silver intermediate layer 4 consists of pure silver in the exemplary embodiment.
- the solder plate 6 can be seen under the intermediate silver layer 4.
- the solder plate essentially consists of copper and silver and contains it in its commercially available form Execution form already all necessary soldering aids. It has been cut off from a commercially available solder strip of the desired width. Its contour is matched to the contour of the silver intermediate layer 4, but is surmounted on all sides by approximately 1 mm from the silver intermediate layer. Under the solder plate 6, the contact carrier 8 for the contact piece 1 is shown in FIG. 1 It consists of a flat material made of steel, which is coated on the surface with copper.
- the switching silver contact pads 2 are first pressed in a pressing tool with the silver intermediate layer 4 cut to the contact dimension from a flat silver material to form a two-layer contact
- the solder plate 6 which was previously shaved off by a strip of solder flat material, is positioned and attached or welded on by means of a sonotrode 10 by means of ultrasound.
- the sonotrode 10 has a contact surface facing the solder 6, which has small elevations 12 is provided. In the exemplary embodiment, these are small pyramid-shaped tips 12 that press the solder plate 6 against the silver intermediate layer 4. When the piezoceramic is activated, this contact surface of the sonotrode 10 swings in the direction parallel to the contact surface on the solder 6.
- solder plate 6 located below the conical elevations 12 of the contact surface of the sonotrode 10 and thus pressed more strongly against the silver interlayer the silver intermediate layer 4, while the solder plate remains cold otherwise.
- the two-layer contact 2, 4 provided in this way with the solder plate 6 is subsequently placed under a pressing tool and pressed flat with a pressing pressure of several tons per cm 2 .
- the solder plate 6 is pressed into the silver intermediate layer 4 so that the silver intermediate layer encompasses the solder plate on all sides with the exception of the surface to be soldered later on the contact carrier 8.
- the two-layer contact is placed on the contact carrier 8 and soldered to the contact carrier 8.
- the preceding plan pressing ensures that the contact lies completely flat on the contact carrier 8 during soldering.
- solder plate 6 can be reliably positioned on the silver intermediate layer 4 of the switching silver contact pad without having previously been heated to a temperature close to the soldering temperature. This avoids the risk that disadvantages in later soldering with the contact carrier 8 have to be accepted due to the heating of the solder. Furthermore, the handling of the parts has been simplified and made cheaper.
- the ultrasound welding of the solder on the silver intermediate layer can be demonstrated in the micrograph.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Manufacture Of Switches (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4139998 | 1991-12-04 | ||
DE4139998A DE4139998A1 (de) | 1991-12-04 | 1991-12-04 | Kontaktstueck mit einer schaltsilber-kontaktauflage und verfahren zu seiner herstellung |
PCT/DE1992/000998 WO1993011550A1 (de) | 1991-12-04 | 1992-11-30 | Kontaktstück mit einer schaltsilber-kontaktauflage und verfahren zu seiner herstellung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0615651A1 true EP0615651A1 (de) | 1994-09-21 |
EP0615651B1 EP0615651B1 (de) | 1995-04-26 |
Family
ID=6446266
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92923688A Expired - Lifetime EP0615651B1 (de) | 1991-12-04 | 1992-11-30 | Kontaktstück mit einer schaltsilber-kontaktauflage und verfahren zu seiner herstellung |
Country Status (7)
Country | Link |
---|---|
US (2) | US5598629A (de) |
EP (1) | EP0615651B1 (de) |
JP (1) | JPH07501646A (de) |
BR (1) | BR9206854A (de) |
DE (2) | DE4139998A1 (de) |
ES (1) | ES2071517T3 (de) |
WO (1) | WO1993011550A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69704025T2 (de) * | 1996-09-19 | 2001-07-19 | Tyco Electronics Corp | Verfahren zur herstellung eines elektromechanischen relais |
US6010059A (en) * | 1997-09-30 | 2000-01-04 | Siemens Energy & Automation, Inc. | Method for ultrasonic joining of electrical parts using a brazing alloy |
EP1261000B1 (de) * | 1997-09-30 | 2003-11-12 | Siemens Energy & Automation, Inc. | Elektrischer Schaltungsschutzeinrichtung mit Ultraschall geschweissten elektrische Teilen unter benützung von einer Hartlötlegierung |
US6049046A (en) * | 1997-09-30 | 2000-04-11 | Siemens Energy & Automation, Inc. | Electric circuit protection device having electrical parts ultrasonically joined using a brazing alloy |
DE102019104318C5 (de) * | 2019-02-20 | 2023-06-22 | Auto-Kabel Management Gmbh | Elektrischer Leiter sowie Verfahren zur Herstellung eines elektrischen Leiters |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL193594A (de) * | 1954-03-02 | |||
JPS4312322Y1 (de) * | 1966-11-02 | 1968-05-28 | ||
US3775067A (en) * | 1971-12-06 | 1973-11-27 | Textron Inc | Copper backed electrical contact |
JPS5116049B2 (de) * | 1972-08-18 | 1976-05-21 | ||
DE2540943B2 (de) * | 1975-09-13 | 1978-02-02 | W.C. Heraeus Gmbh, 6450 Hanau | Kontaktkoerper fuer einen elektrischen steckkontakt |
US4053728A (en) * | 1975-10-24 | 1977-10-11 | General Electric Company | Brazed joint between a beryllium-base part and a part primarily of a metal that is retractable with beryllium to form a brittle intermetallic compound |
CH595685A5 (de) * | 1976-08-19 | 1978-02-28 | Rau Fa G | |
JPS5350461A (en) * | 1976-10-18 | 1978-05-08 | Okura Denki Co Ltd | Structure for supporting movable core of vacuum switch |
DE2844888C2 (de) * | 1978-10-14 | 1983-02-24 | W.C. Heraeus Gmbh, 6450 Hanau | Vormaterial zur Herstellung elektrischer Kontakte |
DE2939997C2 (de) * | 1979-10-03 | 1984-04-26 | Degussa Ag, 6000 Frankfurt | Verfahren und Vorrichtung zur Aufbringung von Kontaktkörpern auf Kontaktträger |
DE3107665A1 (de) * | 1981-02-28 | 1982-09-16 | W.C. Heraeus Gmbh, 6450 Hanau | "metallhalbzeug" |
DE3437981C2 (de) * | 1984-10-17 | 1986-08-21 | Doduco KG Dr. Eugen Dürrwächter, 7530 Pforzheim | Verfahren zum Herstellen eines Halbzeugs für elektrische Kontakte |
JPS6326906U (de) * | 1986-08-04 | 1988-02-22 | ||
EP0283536A1 (de) * | 1987-03-24 | 1988-09-28 | INOVAN GmbH & Co. KG Metalle und Bauelemente | Verfahren zum Herstellen von Silber/MeO-Kontaktplättchen mit löt- oder schweissfähiger Unterseite |
DE3767487D1 (de) * | 1987-07-14 | 1991-02-21 | Inovan Stroebe | Verfahren zum herstellen von silber/me0-kontaktplaettchen mit loet- oder schweissfaehiger unterseite. |
ATE69571T1 (de) * | 1987-07-22 | 1991-12-15 | Siemens Ag | Verfahren zum verbinden von werkstuecken durch widerstandserwaermung mittels eines kurzzeitenergieimpulses. |
DE4216224C2 (de) * | 1992-05-19 | 1994-03-17 | Heraeus Gmbh W C | Vormaterial und Halbzeug für elektrische Kontakte sowie Verfahren zur Herstellung |
DE4331913A1 (de) * | 1993-09-20 | 1995-03-23 | Siemens Ag | Verfahren zum Verbinden von einer Kontaktauflage aus Silber-Metalloxid-Werkstoff mit einem metallischen Kontaktträger |
-
1991
- 1991-12-04 DE DE4139998A patent/DE4139998A1/de not_active Withdrawn
-
1992
- 1992-11-30 ES ES92923688T patent/ES2071517T3/es not_active Expired - Lifetime
- 1992-11-30 WO PCT/DE1992/000998 patent/WO1993011550A1/de active IP Right Grant
- 1992-11-30 BR BR9206854A patent/BR9206854A/pt not_active Application Discontinuation
- 1992-11-30 JP JP5509702A patent/JPH07501646A/ja active Pending
- 1992-11-30 DE DE59202048T patent/DE59202048D1/de not_active Expired - Fee Related
- 1992-11-30 EP EP92923688A patent/EP0615651B1/de not_active Expired - Lifetime
-
1994
- 1994-06-06 US US08/254,128 patent/US5598629A/en not_active Expired - Fee Related
-
1996
- 1996-11-12 US US08/745,502 patent/US5799771A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9311550A1 * |
Also Published As
Publication number | Publication date |
---|---|
JPH07501646A (ja) | 1995-02-16 |
DE59202048D1 (de) | 1995-06-01 |
ES2071517T3 (es) | 1995-06-16 |
EP0615651B1 (de) | 1995-04-26 |
US5598629A (en) | 1997-02-04 |
BR9206854A (pt) | 1995-12-05 |
DE4139998A1 (de) | 1993-06-09 |
US5799771A (en) | 1998-09-01 |
WO1993011550A1 (de) | 1993-06-10 |
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