Patent ID: 8784164
Filing Date: 2014-07-22
Classification: B24B

Abstract:
1. A power tool, comprising: a housing accommodating a motor therein; a bearing base having a lower surface and an upper end that is connected to the housing; an output shaft mounted in the bearing base and protruding out of the lower surface of the bearing base; a shield movably connected with the bearing base; and a locking mechanism for locking the shield relative to the bearing base, wherein the locking mechanism further comprises a locking element arranged on the shield and a stop member and wherein the bearing base is formed with a hollow chamber within which the stop member is arranged, wherein the hollow chamber is formed with a guiding surface, and the stop member is formed with a guiding side surface and slidably mounted within the hollow chamber, wherein a support spacer is mounted on the lower surface of the bearing base, wherein the stop member is further formed with an operation arm and a locking arm, and wherein the bearing base further comprises a side wall formed with a side groove which communicates with the hollow chamber in the lower surface, and at least one of the operation arm or the locking arm passes through the side groove of the side wall.