| 摘要 |
Instability of an electric connection state due to solder-wicking from a board connecting part of an electrically-conductive shell can be prevented with a simple configuration. A recessed part recessed toward a fixed contact and a movable contact is provided in the board connecting part of the electrically-conductive shell attached to an insulating housing. An excessive amount of a solder material or flux that is used at the board connecting part of the electrically-conductive shell and tries to rise along the wall surfaces of the board connecting part or the electrically-conductive shell is stored in the recessed part. The acting force of the rise is reduced by a reverse-tapered inclined surface constituting a wall surface of the recessed part. Furthermore, the length of the rise of the solder material and flux is extended by a curved wall surface of the recessed part. Thus, so-called solder-wicking is configured to be prevented well.
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