US3864826A - Method of manufacturing a sealed contact - Google Patents

Method of manufacturing a sealed contact Download PDF

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Publication number
US3864826A
US3864826A US415029A US41502973A US3864826A US 3864826 A US3864826 A US 3864826A US 415029 A US415029 A US 415029A US 41502973 A US41502973 A US 41502973A US 3864826 A US3864826 A US 3864826A
Authority
US
United States
Prior art keywords
base plate
holes
contact
cover
pegs
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
Application number
US415029A
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English (en)
Inventor
Helmut Buttel
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.)
Alcatel Lucent NV
Original Assignee
International Standard Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of US3864826A publication Critical patent/US3864826A/en
Assigned to ALCATEL N.V., DE LAIRESSESTRAAT 153, 1075 HK AMSTERDAM, THE NETHERLANDS, A CORP OF THE NETHERLANDS reassignment ALCATEL N.V., DE LAIRESSESTRAAT 153, 1075 HK AMSTERDAM, THE NETHERLANDS, A CORP OF THE NETHERLANDS ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: INTERNATIONAL STANDARD ELECTRIC CORPORATION, A CORP OF DE
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01H11/005—Apparatus or processes specially adapted for the manufacture of electric switches of reed switches
    • 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
    • Y10T29/49105—Switch making

Definitions

  • ABSTRACT A method for closely controlling the tolerances involved in the manufacture of a contact assembly is accomplished by a predeterminately positioned oblong hole in one corner of both the base plate and cover, and a predeterminately positioned circular hole in another corner of both the base plate and cover. Placement of the base plate and cover upon respectively positioned circular and oblong pegs allows the contact members of both the cover and base plate to exactly align. Welding of the base plate and cover is thereby accomplished within very close tolerances. The holes remaining in the finished contact are useful for aligning and mounting the contact during later operation.
  • the present invention relates to a method of manufacturing a sealed contact with a flat housing consisting of a plane base plate with a glass-to-metal seal and a hood-shaped cover, which cover is provided with an armature designed as a flat component fastened to the cover with the aid of an armature holding spring.
  • This contact is described in detail in a copending application by W. Mecklenburg et al Ser. No. 417,984 entitled Magnetically Actuated Sealed Contact, assigned to the assignee of the present invention.
  • the contacts involved within the scope of this invention are quite small, and some of the components within the contact are miniature.
  • the diameter of the electrical contact area within the relay is in the order of millimeters, the manufacturing tolerances must be held to a minimum to avoid misalignment problems.
  • the electrical contacts within the contact assembly consist of a pair of contacts, one on the cover portion of the assembly, and one on the base. Electrical continuity through the assembly is accomplished by means of magnetically attracting the electrical contact of the cover into contact with the electrical contact on the base. If the electrical contacts do not contact each other in nearly exact correspondence in contact area serious problems could occur resulting in eventual failure due to the electrical contacts becoming stuck in a closed position.
  • the placement of the electrical contact on the cover, and the placement of the electrical contact on the base involve a great deal of precision so that when the cover and base are eventually sealed together, their corresponding electrical contacts will perfectly align. This amount of precision is costly in both equipment and time, since close tolerances must be kept for assembling the electrical contacts both to the cover and base, and also for sealing the cover to the base.
  • This invention is based on the problem of providing a method of manufacturing a sealed contact so that the contact members within the housing, as well as the two parts of the housing itself, will be positioned opposite each other with as little displacement as possible.
  • the adding or accumulation of the tolerances of the individual parts during the assembly to form the finished contact is largely avoided by providing for an exact positioning of the individual parts in relation to certain fixed points.
  • the oppositely arranged contact members are of a rectangular design and oppose each other crossways in the finished contact. It is an additional advantage that there is always provided large overlapping of the contact-making surfaces.
  • a method for closely controlling the tolerances involved in the manufacture of a contact assembly This is accomplished by a predeterminately positioned oblong hole in one corner of both the base plate and cover, and a predeterminately positioned circular hole in another corner of both the base plate and cover. Placement of the base plate and cover upon respectively positioned circular and oblong pegs allows the contact members of both the cover and base plate to exactly align. Welding of the base plate and cover is thereby accomplished within very close tolerances. The holes remaining in the finished contact are useful for aligning and mounting the contact during later operation.
  • FIG. 1 is a top view enlarged drawing showing the cover 1, the armature 5 and the armature spring 6;
  • FIG. 2 is a top view of the base plate 7' showing the location of the outer part 2, the inner part 3 and the glass ring 4;
  • FIG. 3 shows a finished contact in a top view of the top side of the cover 1 on an enlarged scale
  • FIG. 4 shows a finished contact as in FIG. 3 incross section.
  • the cover 1 is of a hoodshaped design and is provided in its interior with an annular shoulder 14. Within this annular shoulder 14 a magnetizable armature 5 designed as a flat component, is retained in position and fastened by means of an electrically conducting armature holding spring 6. The spring is welded to the inside of the cover 1, e.g., at the points 21 and 22.
  • the armature holding spring 6 is designed as a stretched flat spring of rectangular cross section, and has a fiat position of rest.
  • the armature holding spring 6 is divided into three fingers by means of two parallelextending incisions (notches, cuts) 7 and 8. To the two outer ones of these fingers 9 and 10, for example at the points 23 and 24, there is welded the armature 5 while to the free end of the middle finger 11 there is attached a contact member 12.
  • the contact member 12 as attached to the finger of the contact spring 11 has a rectangular design and is in such a way mounted to the contact spring 11 that the longitudinal direction of the contact member 12 extends in parallel with or vertically in relation to the iongitudinal direction of the contact spring 11.
  • the armature 5 is provided with a recess 25 into which the contact member 12 as fastened to the contact spring 11 is permitted to project.
  • the cover 1 is rounded off on one side following the shape of the shoulder 14, whereas the external dimensions of the cover 1 on the other side, by following the lines 27 and 28, end up in two rounded-off corners I and 16 which are again joined by the line 29.
  • the resulting corner there is a bore 17, and in the corner 16 there is arranged an oblong hole 18.
  • the base plate 1 as shown in FIG. 2 consists of an outer part 2 and of a disc-shaped inner part 3 which are joined together by means of a glass ring 4 as to be flush in one plane on the inside of the base plate 1'.
  • the outer shape of the base plate 1' consists of a semi-circle 26' which, at a certain spacing, extends in parallel with the outer diameter of the glass ring 4 and, at the sides, extends into the lines 27' and 28' ending up in the rounded-off corners l5 and 16.
  • the corners l5 and 16' are joined by the line 29'.
  • In the corner 15' there is arranged a bore 17, and in the corner 16 there is provided an oblong hole 18'.
  • On the disc-shaped inner part 3 there is arranged a rectangular contact member 13 in such a way that either the longer or the shorter side of the contact member 13, in dependence upon the position of the contact member 12, will extend in parallel with the line 29.
  • the holes 17 and 17' as well as the oblong holes 18 and 18' are used advantageously per cover or base plate unit when manufacturing the units according to FIGS. 1 and 2 described hereinbefore.
  • the unit consisting of the armature 5 and of the armature holding spring 6 is now available as a semi-finished article.
  • the base plate 1' consisting of an outer part 2 and of a disc-shaped inner part 3 which are firmly joined to one another by means of a glass ring 4, is already available as a pre-fabricated part.
  • the two units are tightly welded along the annular shoulder 14.
  • the welding along the annular shoulder 14 may be carried out in the conventional way either with or without being previously treated with a protective gas in a chamber filled with a protective gas or without a'chamber merely by being supplied with protective gas.
  • an indentation 20 is pro- 'vided on the under side of the armature 5.
  • Both of the impressions l9 and 20, however, are not subject to the present invention, and have been described herein only for the sake of completeness.
  • the receiving holes 17, 18, 17' and 18 therefore provide a method for manufacturing a contact with very close tolerances, and also provide holes useful for mounting and fastening the finished contact.
  • a method of manufacturing a sealed contact according to claim 1 wherein the step of forming said first holes includes forming a pair of holes having first and second shapes and being predeterminately located.
  • a method of providing a sealed contact for use as an electromagnetic relay comprising the following steps:
  • the method of manufacturing a sealed contact according to claim 4 including the step of introducing a protective gas atmosphere prior to sealing said cover assembly to said base plate.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Switches (AREA)
  • Contacts (AREA)
US415029A 1972-12-01 1973-11-12 Method of manufacturing a sealed contact Expired - Lifetime US3864826A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2258968A DE2258968C2 (de) 1972-12-01 1972-12-01 Verfahren zur Herstellung eines abgeschlossenen Kontaktes

Publications (1)

Publication Number Publication Date
US3864826A true US3864826A (en) 1975-02-11

Family

ID=5863286

Family Applications (1)

Application Number Title Priority Date Filing Date
US415029A Expired - Lifetime US3864826A (en) 1972-12-01 1973-11-12 Method of manufacturing a sealed contact

Country Status (13)

Country Link
US (1) US3864826A (US07906523-20110315-C00004.png)
JP (1) JPS4995178A (US07906523-20110315-C00004.png)
AT (1) AT328030B (US07906523-20110315-C00004.png)
CA (1) CA1007040A (US07906523-20110315-C00004.png)
CH (1) CH563660A5 (US07906523-20110315-C00004.png)
DD (1) DD108622A5 (US07906523-20110315-C00004.png)
DE (1) DE2258968C2 (US07906523-20110315-C00004.png)
ES (1) ES421057A1 (US07906523-20110315-C00004.png)
FR (1) FR2209194B1 (US07906523-20110315-C00004.png)
GB (1) GB1423857A (US07906523-20110315-C00004.png)
IN (1) IN139659B (US07906523-20110315-C00004.png)
IT (1) IT1002046B (US07906523-20110315-C00004.png)
NL (1) NL7316334A (US07906523-20110315-C00004.png)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4008306A1 (de) * 1990-03-15 1991-09-19 Asea Brown Boveri Elektrischer zugschalter und verfahren zur montage seiner schaltmechanik

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2254720A (en) * 1938-06-16 1941-09-02 Automatic Signal Corp Insulated electrical contact
US2792537A (en) * 1952-11-03 1957-05-14 Siemens Ag Electrical apparatus including one or more dry-plate rectifiers
US3396457A (en) * 1965-12-02 1968-08-13 Teletype Corp Method of making an electrode structure

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1318377A (fr) * 1961-03-29 1963-02-15 Siemens Ag Relais électromagnétique
DE1916465A1 (de) * 1969-03-31 1970-10-08 Siemens Ag Magnetschalter mit Schutzgas gefuellter Kontaktkammer,insbesondere zum Schalten von Schwachstromkreisen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2254720A (en) * 1938-06-16 1941-09-02 Automatic Signal Corp Insulated electrical contact
US2792537A (en) * 1952-11-03 1957-05-14 Siemens Ag Electrical apparatus including one or more dry-plate rectifiers
US3396457A (en) * 1965-12-02 1968-08-13 Teletype Corp Method of making an electrode structure

Also Published As

Publication number Publication date
IT1002046B (it) 1976-05-20
JPS4995178A (US07906523-20110315-C00004.png) 1974-09-10
CA1007040A (en) 1977-03-22
DE2258968C2 (de) 1974-08-08
FR2209194B1 (US07906523-20110315-C00004.png) 1977-03-04
GB1423857A (en) 1976-02-04
IN139659B (US07906523-20110315-C00004.png) 1976-07-17
DE2258968A1 (US07906523-20110315-C00004.png) 1974-01-03
CH563660A5 (US07906523-20110315-C00004.png) 1975-06-30
DD108622A5 (US07906523-20110315-C00004.png) 1974-09-20
ATA997073A (de) 1975-05-15
AT328030B (de) 1976-02-25
ES421057A1 (es) 1976-05-01
NL7316334A (US07906523-20110315-C00004.png) 1974-06-05
DE2258968B1 (de) 1974-01-03
FR2209194A1 (US07906523-20110315-C00004.png) 1974-06-28

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Legal Events

Date Code Title Description
AS Assignment

Owner name: ALCATEL N.V., DE LAIRESSESTRAAT 153, 1075 HK AMSTE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:INTERNATIONAL STANDARD ELECTRIC CORPORATION, A CORP OF DE;REEL/FRAME:004718/0023

Effective date: 19870311