Drilling and/or chiseling device
AssigneeHilti Aktiengesellschaft
InventorsArmin Below, Hans-Werner Bongus-Ambrosius, Martin Richter, Thomas Hofbrucker, Kent Karlsson
Life of this patent
Estimating the term…
Abstract
A drilling and/or chiseling device has a drive spindle (19) for a drilling and/or chiseling tool with two ring gears (17, 18) of different sizes, a countershaft (1) with a drive pinion (15), a wobble drive (7) for a striking mechanism, mounted on the countershaft (1), and a switching sleeve (9), mounted on the countershaft (1) so that it can be shifted axially by a switching element (20). The switching element displaces the switching sleeve (9) into four different modes of operation of the drilling and/or chiseling device.
Claims8
A drilling and/or chiseling device comprises a drive spindle (19) for a tool, a countershaft (1), arranged parallel to the drive spindle (19), a drive pinion (15), connected rotationally engaged with the countershaft (1) and rotationally engaged with a power take-off pinion (14) of a drive motor, a wobble drive (7) for a striking mechanism mounted on said countershaft (1), a switching sleeve (9) is mounted on the countershaft (1) and can be shifted axially with the help of a switching element (20) and said switching sleeve can be rotationally engaged by a first ring gear (10) thereon with corresponding counter-gear teeth (8) of said wobble drive (7), and first ring gear (17) mounted on a part (16) axially aligned with and rotationally engaged with the drive spindle (19), said countershaft (1) has two outer ring gears (4, 6), with a first outer ring gear (4) rotationally engaged with a second ring gear (11) of the switching sleeve (9), and a second outer ring gear (6) rotationally engaged with a second ring gear (18) on said part (16) and is connected in rotational engagement with the drive spindle (19).
Dependencies are inferred from the claim text.