US3657505A - Electrical contacting arrangement - Google Patents
Electrical contacting arrangement Download PDFInfo
- Publication number
- US3657505A US3657505A US18085A US3657505DA US3657505A US 3657505 A US3657505 A US 3657505A US 18085 A US18085 A US 18085A US 3657505D A US3657505D A US 3657505DA US 3657505 A US3657505 A US 3657505A
- Authority
- US
- United States
- Prior art keywords
- aluminum
- contact
- layer
- base body
- copper
- 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
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 38
- 239000002131 composite material Substances 0.000 abstract description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 11
- 229910052802 copper Inorganic materials 0.000 abstract description 11
- 239000010949 copper Substances 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 11
- 229910052709 silver Inorganic materials 0.000 abstract description 7
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 6
- 238000005266 casting Methods 0.000 abstract description 6
- 239000004332 silver Substances 0.000 abstract description 5
- 238000007711 solidification Methods 0.000 abstract description 3
- 230000008023 solidification Effects 0.000 abstract description 3
- 239000004020 conductor Substances 0.000 description 8
- -1 for instance Substances 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- BTNNPSLJPBRMLZ-UHFFFAOYSA-N benfotiamine Chemical compound C=1C=CC=CC=1C(=O)SC(CCOP(O)(O)=O)=C(C)N(C=O)CC1=CN=C(C)N=C1N BTNNPSLJPBRMLZ-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
- H01H1/38—Plug-and-socket contacts
- H01H1/385—Contact arrangements for high voltage gas blast circuit breakers
Definitions
- a composite electrical contact structure which includes a laminate of an aluminum layer bonded to a layer of high-grade [52] US. Cl. ..200/166 C, 29/630 C contact material such as copper or silver onto the aluminum [51] Int. Cl. ..H01h 1/02 layer of which is then cast a base body of aluminum or alu- [58] Field of Search ..200/166 C; 29/630 C m n alloy. ng ng o the e o y, the surface of the aluminum layer is fused by and becomes united with the molten aluminum upon solidification of the latter.
- the present invention relates to an electrical contact arrangement, especially for power circuit breaker apparatus, in which a base body of aluminum or aluminum alloy is joined to a contact piece of high-grade contact material by casting.
- the present invention is based on the task to find a solution for applying contacts to a base body of aluminum or aluminum alloy with a high-grade material, in which the contact transition is substantially improved over the arrangements so far proposed, with respect to from the electrical as well as thermal aspects.
- the contact piece-be a composite body consisting of aluminum and the high-grade contact material, the aluminum side of which faces the base body. In this manner there is obtained between the base body and the aluminum side of the composite body an intimate, homogeneous metallic bond which remains free of corrosion and in which the entire cross section of the transfer area is utilized.
- FIG. 1 is a half longitudinal section showing the point of contact between two tubular conductors
- FIG. 2 is a similar sectional view showing a sliding contact arrangement.
- the two tubular conductors l and 2 are arranged so that they butt against each other with their end faces.
- the conductors 1, 2 consist of aluminum or aluminum alloy and each have at the end face the contact bodies 3 and 4, respectively, each of which, as.a composite body, consists of two layers 3a, 3b and 4a, 411, respectively.
- the layers 3a and 4a, respectively, consist of aluminum and the layers 3b, 4b respectively consist of high-grade contact material, such as for-example, copper or silver.
- Such composite bodies are manufactured by rolling together under pressure and heat to form a laminate and are commercially available in various forms, for instance, in plate form, for instance, as the so-called Cupal plate.
- the tubular conductor part 1 can for example, be cast from an ingot of aluminum alloy, wherein the laminated body 3 is placed into the casting mold prior to pouring the molten aluminum into the mold, in such a manner that the aluminum side, layer 3a, faces the casting zone for the conductor body 1 as the latter is cast.
- the composite bodies 3, 4 and an adjacent portion of the conductor 1, 2 can be covered with a suitable protective lacquer, so that access of air and moisture to the contact point is prevented.
- the required contact pressure between the conductors l and 2 can be achieved, for example, by pressing them together in a manner known per se, not shown in detail. If the contacting layers 3b, 4b consists, for example, of copper, they can be silver-plated after they have been faced off to make them flat.
- the ring shaped composite body 8 built up from the aluminum and copper layers 8a, 8b, is cast into the outer surface of the tubular shaped aluminum base body 5.
- the contact fingers 9 On the side of the outer layer of high-grade contact material 8b rest the contact fingers 9.
- These fingers 9 distributed around the circumference. They can consist, for example, of silver-plated copper and are held in a fixed cage 10, with the insertion of the contact pressure springs 11.
- Within the part 5 is accommodated, by means of an insulating plastic ring 7, a nozzle switch piece 6 which is supported and driven so that it can reciprocate in the direction of the double-headed arrow 12.
- the switch piece 6 consists, for example, of silverplated copper and the right-hand ends of the fingers 6 slide on it.
- the two end faces of the sheet-shaped composite body 8 each can terminate in a small recess in the shape of an annular groove in the base body 5, so that they do not touch the latter.
- the groove can be filled with a protective lacquer which possibly also covers the bodies 5, 8 to some extent.
- a composite contact structure comprising a laminate consisting of an aluminum layer bonded to a layer of highgrade contact material and a base body essentially of aluminum cast upon and fused with said aluminum layer.
- MOSELE JOSEF I is ccrtificd that error appears in the and ch-1'7; uaid Letters Patent a.
Landscapes
- Contacts (AREA)
- Manufacture Of Switches (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH494369A CH497771A (de) | 1969-04-01 | 1969-04-01 | Elektrische Kontaktanordnung, insbesondere für Starkstromschaltgeräte |
| DE6913470U DE6913470U (de) | 1969-04-01 | 1969-04-02 | Elektrische kontaktanordnung |
| DE19691917104 DE1917104A1 (de) | 1969-04-01 | 1969-04-02 | Elektrische Kontaktanordnung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3657505A true US3657505A (en) | 1972-04-18 |
Family
ID=27175037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US18085A Expired - Lifetime US3657505A (en) | 1969-04-01 | 1970-03-10 | Electrical contacting arrangement |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3657505A (de) |
| CH (1) | CH497771A (de) |
| DE (2) | DE1917104A1 (de) |
| FR (1) | FR2042222A5 (de) |
| GB (1) | GB1247131A (de) |
| SE (1) | SE352474B (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3599376A (en) * | 1968-11-22 | 1971-08-17 | Cincinnati Milacron Inc | Apparatus for automatic grinding |
| USRE31452E (en) * | 1979-02-16 | 1983-11-29 | Casco Products Division of Sun Chemical Corporation | Quick-acting electric cigar lighter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3026603A (en) * | 1958-10-13 | 1962-03-27 | Kelsey Hayes Co | Method of making electrical contacts and the like |
| US3198662A (en) * | 1962-08-20 | 1965-08-03 | Philip M H Seibert | Process of applying a silver layer on an aluminum electrical contact |
| US3299240A (en) * | 1965-05-25 | 1967-01-17 | Ite Circuit Breaker Ltd | Hinge contact for disconnect switch |
-
1969
- 1969-04-01 CH CH494369A patent/CH497771A/de not_active IP Right Cessation
- 1969-04-02 DE DE19691917104 patent/DE1917104A1/de active Pending
- 1969-04-02 DE DE6913470U patent/DE6913470U/de not_active Expired
-
1970
- 1970-03-10 US US18085A patent/US3657505A/en not_active Expired - Lifetime
- 1970-03-27 FR FR7011151A patent/FR2042222A5/fr not_active Expired
- 1970-03-31 GB GB05040/70A patent/GB1247131A/en not_active Expired
- 1970-03-31 SE SE04406/70A patent/SE352474B/xx unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3026603A (en) * | 1958-10-13 | 1962-03-27 | Kelsey Hayes Co | Method of making electrical contacts and the like |
| US3198662A (en) * | 1962-08-20 | 1965-08-03 | Philip M H Seibert | Process of applying a silver layer on an aluminum electrical contact |
| US3299240A (en) * | 1965-05-25 | 1967-01-17 | Ite Circuit Breaker Ltd | Hinge contact for disconnect switch |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3599376A (en) * | 1968-11-22 | 1971-08-17 | Cincinnati Milacron Inc | Apparatus for automatic grinding |
| USRE31452E (en) * | 1979-02-16 | 1983-11-29 | Casco Products Division of Sun Chemical Corporation | Quick-acting electric cigar lighter |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2042222A5 (de) | 1971-02-05 |
| GB1247131A (en) | 1971-09-22 |
| DE6913470U (de) | 1971-02-18 |
| SE352474B (de) | 1972-12-27 |
| CH497771A (de) | 1970-10-15 |
| DE1917104A1 (de) | 1970-10-08 |
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