Patent ID: 9073189
Filing Date: 2015-07-07
Classification: B25B

Abstract:
1. An adapter structure for handheld electrical tools comprising: an outer socket, being a cylindrical housing, provided with a shank at its bottom and provided therein with a plurality of first teeth formed on an inner wall of the outer socket, with the first teeth arranged in the form of a ring, with each tooth having two inclined faces, with a receiving space formed in a lower portion of the outer socket; and an inner socket including an upper section, a lower section, and a middle section located between the upper and lower sections, with the middle section defining therein an engagement space for receiving a shank of a tool, with the middle section provided with a plurality of second teeth at its bottom around a top of the lower section, with the second teeth corresponding to the first teeth and arranged in the form of a ring, with each tooth having two inclined faces, with the lower section defining therein a lower space for receiving a compression spring; wherein the inner socket is fitted into the outer socket with the lower section thereof engaged in the receiving space of the outer socket, wherein when the tool is pressed to move downwardly, the first teeth is able to be engaged with the second teeth, so that the outer socket is able to drive the inner socket together with the tool to rotate for conducting a fastening operation.