Switch case and switch

A switch comprising:

• a resin case;
• and
• a metal plate that includes a portion embedded in the resin case;
• wherein:
• the metal plate includes:
• a first surface;
• a second surface opposite to the first surface;
• a side surface disposed between the first surface and the second surface in the embedded portion of the metal plate;
• and
• four or more recesses formed on the second surface in the embedded portion of the metal plate, the four or more recesses being aligned with each other,
• the resin case contacts the second surface of the metal plate and an inner surface of each of the four or more recesses in the embedded portion of the metal plate,
• a depth of each of the four or more recesses are smaller than a distance between the first surface and the second surface, and
• respective minimum distances from the four or more recesses to the side surface are different from one another.

A switch comprising:

• a resin case;
• and
• a metal plate that includes a portion embedded in the resin case,
• wherein:
• the metal plate includes:
• a first surface,
• a second surface opposite to the first surface,
• a side surface disposed between the first surface and the second surface in the embedded portion of the metal plate, and
• four or more recesses formed on the second surface in the embedded portion of the metal plate, aligned with each other, and disposed at respective positions located away from the side surface by respective distances different from one another,
• the resin case contacts the second surface of the metal plate and an inner surface of each of the four or more recesses in the embedded portion of the metal plate, and
• the four or more recesses do not extend fully through the metal plate.

A switch comprising:

• a resin case;
• a first metal plate at least partially embedded in the resin case and including a contact portion exposed from the resin case;
• a dome shape metal plate facing the contact portion;
• and
• a second metal plate configured to be electrically connected to the first metal plate via the dome shape metal plate,
• wherein:
• the resin case has a first pin hole, a second pin hole, a third pin hole, and a fourth pin hole, each of which extends fully through the resin case,
• the first metal plate has a first surface and a second surface opposite to the first surface,
• a plurality of first recesses and a plurality of second recesses are provided in the second surface of the first metal plate,
• the plurality of first recesses are arranged to surround the first pin hole when viewed in a direction perpendicular to the second surface of the first metal plate,
• the plurality of second recesses are arranged to surround the second pin hole when viewed in the direction perpendicular to the second surface of the first metal plate,
• the second metal plate has a third surface,
• a plurality of third recesses and a plurality of fourth recesses are provided in the third surface of the second metal plate,
• the plurality of third recesses are arranged to surround the third pin hole when viewed in the direction perpendicular to the third surface of the second metal plate,
• the plurality of fourth recesses are arranged to surround the fourth pin hole when viewed in the direction perpendicular to the third surface of the second metal plate, and
• a direction along a line passing through the first pin hole and the second pin hole is different from a direction along a line passing through the third pin hole and the fourth pin hole.