Contact mechanism, trigger switch using contact mechanism, and electric tool

A contact mechanism comprising:

• an operating element reciprocally moving with respect to a housing;
• a movable contact terminal housed in the housing;
• a pair of movable contact pieces housed in the housing and mounted on the movable contact terminal in a juxtaposed manner such that the pair of movable contact pieces is rotatable along with reciprocation movement of the operating element;
• an open/close movable contact mounted on an open/close movable contact piece which forms a first movable contact piece of the movable contact pieces;
• a current-passing movable contact mounted on a current-passing movable contact piece which forms a second movable contact piece of the movable contact pieces;
• a fixed contact terminal housed in the housing and facing the movable contact terminal;
• an open/close fixed contact mounted on the fixed contact terminal so that the open/close movable contact is brought into contact with or separated from the open/close fixed contact;
• a current-passing fixed contact mounted on the fixed contact terminal so that the current-passing movable contact is brought into contact with or separated from the current-passing fixed contact;
• and
• a spring member which is arranged to bias the open/close movable contact piece in a contact closing direction,
• wherein
• the contact mechanism is configured such that, with the reciprocation movement of the operating element, the open/close movable contact piece is rotated by bias of the spring member so as to bring the open/close movable contact into pressure contact with the open/close fixed contact, and the operating element rotates the current-passing movable contact piece so as to bring the current-passing movable contact into pressure contact with the current-passing fixed contact mounted on the fixed contact terminal.