Hilti Aktiengesellschaft

Josef Fünfer

Erwin Manschitz

Uto Plank

Orlaw Massler

Ulrich Mandel

Manfred Ludwig

Manfred Ege

Daniel Seltmann

Josef Moser

Hammer drill and/or chipping hammer having a drive motor, an impact mechanism and a tool fitting for fitting a tool, wherein the impact mechanism has an anvil that is axially displaceable in an anvil guide and acts on the tool, wherein the impact mechanism has an idle-strike damper element and a rebound-strike damper element, which are formed in one piece with one another and as such form a combined damper element, wherein the anvil guide is arranged outside, preferably only outside the combined damper element.

Impact mechanism arrangement

Hammer drill and/or chipping hammer () having a drive motor (), an impact mechanism () and a tool fitting () for fitting a tool (), wherein the impact mechanism () has an anvil () that is axially displaceable in an anvil guide () and acts on the tool (), wherein the impact mechanism () has an idle-strike damper element (), which acts between the anvil () and the tool fitting (), and wherein the impact mechanism has a guide housing (), which engages at least partially around the anvil () and/or the tool fitting (), wherein an additional idle-strike damper element () is provided, which acts between the tool fitting () and the guide housing ().

A power tool, in particular a chipping hammer, containing a tool-fitting element for receiving and holding a tool, in particular a chisel, and an apparatus for selectively turning the tool-fitting element. The apparatus contains an impact-mechanism housing having a connecting device, a coupling element having an attachment device, and an uncoupling element for reversibly separating the coupling element from the impact-mechanism housing, wherein the coupling element is settable reversibly in a first or second position, and wherein, in the first position, the coupling element is connected releasably to the impact-mechanism housing such that the tool-fitting element is prevented from turning about an axis of rotation and, in the second position, the coupling element is movable relative to the impact-mechanism housing such that the tool-fitting element is able to be turned about an axis of rotation relative to the impact-mechanism housing.

Apparatus for adjusting a chisel

A hand-held power tool, in particular a hammer drill or combination hammer, having a tool fitting for holding a striking and rotating tool on a working axis, an electric motor coupled to a transmission shaft, an impact mechanism, which has a striker that is moved periodically along the working axis, and having a rotary drive, which drives a guide tube carrying the tool fitting in rotation about the working axis, wherein the rotary drive is coupled to the transmission shaft via a rocker lever.

Hand-held power tool

A hand-held power tool includes a percussion mechanism () arranged in the tool housing (), and a motor () for driving the percussion mechanism and connected therewith by a gear unit (), with the percussion mechanism including an eccentric () a piston (), and a connection rod () connecting the eccentric with the driving piston () and having a first part () connectable with the eccentric (), a second part () connectable with the drive piston () and telescopically displaceable relative to the first part (), and a spring for damping vibrations occurring during operation of the power tool and arranged between the first () and second () parts.

A dust removal unit () includes an adjustable axial depth stop () for an at least partially rotatable hand tool device () with a radially displaced, rotationally fixed, telescopable, axially limited movable suction tube assembly with a suction tube () running parallel to the axis (A) of the tool device () and coupled at one end to a suction head (). The suction tube () includes an axially extending pleated bellows ().

Dust removal unit for a hand tool device

A drilling and/or chiseling tool includes a striking mechanism (28) driven by a swash pin (12) of a swash mechanism (25). The actuation of the swash pin (12) is effected by a single piece intermediate shaft (11) powered by a drive motor (4). The shaft (11) causes a swash ring (13) from which the swash pin (12) projects, to move due to a rolling track (15) arranged at an angle to the drilling direction of the tool. The drilling direction extends generally parallel to the axis of the intermediate shaft (11). This arrangement greatly assists in the ease of assembly and the economical fabrication of the tool.

Drilling and/or chiseling tool

A drilling and/or chiseling tool has a gear box housing component (2) supporting the striking mechanism (31) and an intermediate shaft (15) each having an axis with the axes arranged in parallel relation. The striking mechanism (31) and the intermediate shaft (15 are supported by a bearing plate (28) detachable connected to the gear box housing component (2).

Growing community of inventors

Königsbrunn, Germany

Josef Fünfer