Claims
- 1. A process for the manufacture of an electric switch, characterized by the following steps:
- punching I-shaped holes through a sheet conductor,
- forming contact pieces substantially conforming to said I-shaped holes by punching from a strip of contact material,
- inserting said contact pieces under pressure into said I-shaped holes,
- swaging the contact pieces both upwardly and downwardly so as to retain said pieces within said sheet conductor,
- subsequently perforating the I-shaped contact pieces across the middle thereof in conjunction with the adjoining portion of the surrounding sheet conductor so as to remove a predetermined portion of said contact pieces for thereby simultaneously forming two oppositely disposed contacts and a contact gap therebetween, and
- simultaneously finishing the opposed faces of the resultant paired contacts by the treatment of shaving so as to impart to said contacts a smooth surface finish and to precisely adjust the size of said gap therebetween.
- 2.
- removing process as set forth in claim 1, further comprising removing unnecessary portions of said sheet conductor for the purpose of forming a plurality of terminals, mounted in a cantilevered fashion upon a webbing portion of said sheet conductor, which include said paired contacts so as to accurately maintain the positional relationship between said paired contacts;
- assembling said terminals within a switch case; and
- removing said webbing.
- 3. a process as set forth in claim 2, wherein:
- said perforation of said I-shaped contact pieces, said removal of said uncessary portions of said sheet conductor, and said removal of said webbing are performed by punching.
- 4. A process as set forth in claim 1, further comprising:
- sloping the upper and lower wall portions of said sheet conductor defining said I-shaped holes so as to accommodate said swaged contact pieces.
- 5. A process as set forth in claim 4, wherein:
- said sloping of said wall portions is performed by pressing.
Priority Claims (1)
Number |
Date |
Country |
Kind |
47-96402 |
Sep 1972 |
JA |
|
Parent Case Info
This is a division of application Ser. No. 399,681 filed Sept. 24,1973, now abandoned.
US Referenced Citations (4)
Foreign Referenced Citations (1)
Number |
Date |
Country |
737,998 |
Oct 1955 |
UK |
Divisions (1)
|
Number |
Date |
Country |
Parent |
399681 |
Sep 1973 |
|