Patent ID: 8143547

Claim:
A clockwise and counterclockwise rotation switching device of a power tool to select a clockwise rotation or a counterclockwise rotation of a motor, the clockwise and counterclockwise rotation switching device comprising: a unit base being fixed in the power tool and having a pair of fixed contacts; and a brush base being rotatably provided with respect to the unit base, having a pair of movable contacts positioned between the fixed contacts, and switching a contacting mode of the movable contact with respect to the fixed contacts by a rotation operation, wherein an end part of any one of the fixed contact and the movable contact is formed to be an elastic end being deformed in contact with the other contact, and wherein the unit base or the brush base is provided with a regulation part abutting with the elastic end so as to regulate a deformation quantity of the elastic end which deforms when the fixed contact is contacted with the movable contact and wherein the movable contacts are rotatably provided with respect to the regulation part and the fixed contact is provided between the regulation part and the movable contact or the movable contact is provided between the regulation part and the fixed contact when the fixed contact is contacted with the movable contact.