Rocker switch

A rocker switch comprising:

• a movable contact piece having a generally U-like shape, that is made of an elastic member;
• a movable contact that is mounted on a portion of the movable contact piece near one end thereof;
• a movable contact piece support member that comprises:
• a movable contact piece support for swingably supporting the movable contact piece;
• and a tab terminal hanging down from the movable contact piece support;
• a pair of detents that is formed to project on the both side edges of the tab terminal of the movable contact piece support member in the direction of the width of the tab terminal at predetermined positions thereof;
• a fixed contact piece that comprises:
• a fixed contact support on which a fixed contact is mounted;
• and a tab terminal hanging down from the fixed contact support;
• a pair of detents that is formed to project on the both side edges of the tab terminal of the fixed contact piece in the direction of the width of the tab terminal at predetermined positions thereof;
• a box that has its top opened and a slit formed through the bottom wall of the box, through which the tab terminal of the movable contact piece support member is pulled out toward the outside and a slit formed through the bottom wall of the box, through which the tab terminal of the fixed contact piece is pulled out toward the outside;
• an operation button that comprises a movable contact piece actuator to be engaged with the movable contact piece and is swingably mounted to the opening portion of the box;
• and
• a recess that is formed on a portion of the movable contact piece near the other end thereof to extend in the direction of the width of the movable contact piece and has a generally circular arc-shape in section engaged with a generally circular arc-shaped tip in section of the movable contact piece actuator of the operation button, and
• wherein the movable contact piece support member is engaged and secured on the bottom wall of the box by forcedly bending a pair of the detent pieces of the tab terminal thereof outwardly in the direction of the width thereof and engaging them, the tab terminal being pulled out toward the outside through the corresponding slit formed through the bottom wall of the box;
• the fixed contact piece is engaged and secured on the bottom wall of the box by forcedly bending a pair of the detent pieces of the tab terminal thereof outwardly in the direction of the width thereof and engaging them, the tab terminal being pulled out toward the outside through the corresponding slit formed through the bottom wall of the box;
• the operation button is swingably mounted to the opening portion of the box in the state that the generally circular arc-shaped tip in section of the movable contact piece actuator is engaged with the recess of a generally circular arc-shape in section of the movable contact piece;
• and
• the movable contact piece actuator that is swingable with the swinging movement of the operation button causes the movable contact piece to be swung to the switch-on position where the movable contact thereof comes into contact with the fixed contact or the switch-off position where the movable contact thereof is away from the fixed contact.