Patent ID: 8720599
Filing Date: 2014-05-13
Classification: B25D

Abstract:
1. A power tool which performs an operation by linear motion of a tool bit in an axial direction comprising: a tool body, a tool holder that holds the tool bit in the front end region of the tool holder and extends in the axial direction of the tool bit, an elastic element, a motor, a striking element that is linearly driven in the axial direction of the tool bit by the motor, and an intermediate element that is housed within the tool holder such that it can slide in the axial direction of the tool bit and serves to transmit linear motion of the striking element to the tool bit, wherein a rear region of the tool holder opposite from the front end region extends into the tool body, and in the extending region into the tool body, the tool holder is coupled to the tool body such that the tool holder can rotate about a pivot on a z-axis defined by a longitudinal axis of the tool bit, in directions of y- and x-axes, the y- and x-axes forming a plane perpendicular to the z-axis, wherein the elastic element applies a biasing force to the tool holder in such a manner as to hold the tool holder in an initial position with respect to the tool body, wherein the tool bit is designed as a hammer bit which performs a hammering operation by applying a linear striking force to a workpiece, the power tool further comprising a second elastic element that is disposed between the tool body and the intermediate element and applies a biasing force to the intermediate element in such a manner as to hold the intermediate element in an initial position, and wherein the intermediate element is coupled to the tool body via a second spherical connection which is formed by a convex spherical surface centered on a pivot on the z-axis and a concave spherical surface which conforms to the convex spherical surface.