Method of manufacturing a sealed contact |
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| 申请号 | US41502973 | 申请日 | 1973-11-12 | 公开(公告)号 | US3864826A | 公开(公告)日 | 1975-02-11 |
| 申请人 | INT STANDARD ELECTRIC CORP; | 发明人 | BUTTEL HELMUT; | ||||
| 摘要 | 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. | ||||||
| 权利要求 | 1. A method of providing a sealed contact for use in an electromagnetic relay said contact having a flat base plate assembly containing a glass-to-metal seal, an electrical contact, a hood-shaped cover assembly including an armature fastened to the cover by means of an armature holding spring, the method comprising the following steps: a. forming a pair of first holes of predetermined shape and location in said base plate assembly; b. forming a pair of second holes of predetermined shape and location in said cover assembly; c. positioning said base plate assembly by fitting said first holes over a first set of pegs in registry with said first holes; d. positioning said cover assembly upon said base plate by fitting said second holes over a second set of pegs in registry with said second holes; e. sealing said cover assembly to said base plate assembly while said cover and said base plate assemblies are held in position by means of their respective pegs; f. removing the contact from said pegs; and g. mounting and aligning said contact in said relay by means of said first and second pairs of holes. 2. 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. 3. A method of manufacturing a sealed contact according to claim 2 wherein said first shaped hole is circular and said second shaped hole is non-circular. 4. A method of providing a sealed contact for use as an electromagnetic relay comprising the following steps: a. forming a pair of first holes of a predetermined shape and location in a base plate for a sealed contact; b. forming a pair of second holes of a predetermined shape and location in a cover assembly for said sealed contact; c. positioning said base plate by fitting said first holes over a first set of pegs in registry with said first holes; d. securing a contact member to said base plate while said base plate is positioned by said first holes and pegs; e. positioning said cover assembly over said base plate by fitting said second holes in said cover assembly over a second set of pegs in registry with said second holes; f. sealing said cover assembly to said base plate while said cover assembly and said base plate are held in position by their respective said first and second pegs and holes; g. removing the contact from said pegs; and h. mounting and aligning said contact in said relay by means of said first and second pairs of holes. 5. 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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