Drilling implement
AssigneeHilti Aktiengesellschaft
InventorsHelmut Burger, Lutz Troeder, Ernst-Rudolf Lübkert, Georg Brami
Life of this patent
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Abstract
The hand-held drilling and/or screwing implement has a housing with a handle, an electrical driving motor, a carbon brush holder ring and a switching body, which interacts rotationally locked with the carbon brush holder ring. At the carbon brush holder ring, two carbon brush holders are disposed opposite to one another and the switching body has an actuating element, which is disposed on the side opposite to the handle. With the help of an axial positive connection, the carbon brush holder ring can be fastened to the stator, so that it can be inserted together with the stator as a unit in the housing.
Claims6
A hand-held drilling or screwing implement with a housing, a handle protruding essentially perpendicularly from the housing, an electrical driving motor, a carbon brush holder ring disposed coaxially to the driving motor and rotatable in a circumferential direction, and a switching body, interacting rotationally locked with the carbon brush holder ring, the carbon brush holder ring having two carbon brush holders disposed along an axis extending essentially parallel to the longitudinal extent of the handle and lying opposite one another, and the switching body having an actuating element on one side opposite to the handle, wherein the carbon brush holder ring is connectable axially positively with the stator, wherein the carbon brush holder ring has two stop surfaces interacting with at least two counter-surfaces of the stator, wherein each stop surface is at a projection of the carbon brush holder ring, protruding in the direction of the stator and wherein the projection is flexible in the radial direction.
Dependencies are inferred from the claim text.