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US 6,500,087 B2Granted
Electric motor with epicyclic gear system
AssigneeBerger Lahr GmbH & Co. KG
InventorsRaimund Klinger, Bernd Cihlar
Life of this patent
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AssigneeBerger Lahr GmbH & Co. KG
InventorsRaimund Klinger, Bernd Cihlar
Estimating the term…
An electric motor (1) or drive motor has a cylindrical, possibly, however, even conical or disk-shaped rotor (2) and a cavity or interior space (4) surrounded by the rotor (2) and/or its stator (3), into which protrudes in the installed position an epicyclic gear system (5) or planetary gear system which is driven by the electric motor (1). The electric motor (1) has a toothed power output element, for example, a cantilevered gear shaft (6), with which meshes an opposing-teeth-exhibiting power input element, for example, the planetary gears (7) of the epicyclic gear system (5). The power input element of the epicyclic gear drive (5) having the opposing teeth is preassembled with additional drive parts, for example, the carrier (8) for the planetary gears (7) and the planetary ring gear (17) as well as an output shaft (10) and a housing (13) into a unit (9) or subassembly which, during final assembly, can be combined together with the electric motor (1) and its toothed power output element so that the electric motor (1) and the epicyclic gear system (5) can each be separately preassembled (FIG. 1).
Electric motor (1) having an essentially cylindrical, conical or disk-shaped rotor (2) and with an open cylindrical interior space (4) surrounded by at least one of the rotor (2) and a stator (3), an epicyclic gear system (5), driven by the electric motor (1), which protrudes at least partially into the interior space, the electric motor (1) having a toothed power output element, which is formed by inner teeth on the cylindrical interior space of the rotor which act as a ring gear of the epicyclic gear system (5), and which meshes in an installed position with opposing teeth of a power input element of the epicyclic gear system (5), the epicyclic gear system including carrier-(8)-held planetary gears (7) that are inserted into the rotor (2), the power input element of the epicyclic gear system (5) with the opposing teeth is preassembled with additional drive parts into a unit (9) and the power input element of the unit (9) is engageable with the toothed power output element of the electric motor (1) and assembled therewith.
Electric motor (1) having an essentially cylindrical, conical or disk-shaped rotor (2) and with an interior space (4) surrounded by at least one of the rotor (2) and a stator (3), an epicyclic gear system (5), driven by the electric motor (1), which protrudes at least partially into the interior space, the electric motor (1) having a toothed power output element which meshes in an installed position with opposing teeth of a power input element of the epicyclic gear system (5), the power input element of the epicyclic gear system (5) with the opposing teeth is preassembled with additional drive parts into a unit (9), the power input element of the unit (9) is engageable with the toothed power output element of the electric motor (1) and assembled therewith, the toothed power output element of the electric motor (1) is a sun gear shaft (6) that is joined in a rotationally fixed fashion with the rotor (2), and carries a bearing (15) either directly or on a surrounding sleeve section (14) rotationally fixed to or joined as one piece with the rotor (2), the epicyclic gear system includes planetary gears (7) and a planetary ring gear (17) with an axial continuation (16) that fits on said bearing and is simultaneously mountable upon slipping the planetary gears (7) over teeth (6a) of the sun gear shaft (6).
Dependencies are inferred from the claim text.