| 摘要 |
The subject-matter of the invention is the production and construction of contacts which are fitted on conductor tracks of a printed-circuit board, especially for electric alarm clocks. The contacts are applied onto the relevant conductor track elements in the form of a metal solder, are soldered to said conductor track elements in a hot-air flow and are subsequently formed and calibrated by means of a pressing process. The use of a pure tin solder is proposed in order to produce the contacts. A moulding on the alarm-signal triggering spring is used directly as the mating contact. For this purpose, said moulding is produced from a stainless steel. It is provided for the contacts to be applied onto the printed-circuit board and to be formed thereon using, for example, computer-controlled automatic production units. The invention is intended for use in all contacts which may be used, for example, in an electric alarm clock, for example the alarm-signal triggering contact, light contact, alarm-signal selection switch etc.
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