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US 9,314,912 B2Granted
Hand-held power tool with a three-point mounting
AssigneeHilti Aktiengesellschaft
InventorsAlbert Binder, Richard Clark, Sarah Duggan, Bernhard Sander
Life of this patent
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Abstract
A hand-held power tool is disclosed. The power tool has a linear motor with a rotor, an exciter piston that is coupled mechanically to the rotor, and a bearing device with a rotor mounting to support the longitudinal movement of the rotor and an exciter piston mounting to support the exciter piston. The rotor mounting and the exciter piston mounting form a three-point mounting, which is the sole bearing for the rotor and the exciter piston.
Claims13
A hand-held power tool, comprising:
- a linear motor with a rotor;
- an exciter piston mechanically coupled to the rotor;
- and
- a bearing device with a rotor mounting, wherein a longitudinal movement of the rotor is supportable by the rotor mounting, and an exciter piston mounting, wherein a longitudinal movement of the exciter piston is supportable by the exciter piston mounting;
- wherein the rotor mounting has a first bearing and a second bearing, wherein the rotor is supported on opposing sides by the first bearing and the second bearing, and wherein the rotor mounting enables a swiveling of the rotor together with the exciter piston around an axis lying transverse to an axis of motion of a tool of the hand-held power tool;
- wherein the exciter piston mounting has a third bearing with a longitudinal guide along the axis of motion;
- and wherein the first bearing and the second bearing each include a first bearing part and a second bearing part, wherein the first bearing part is a spherical body and the second bearing part is a calotte, and wherein the first bearing part engages the second bearing part such that the first bearing part has limited mobility.
4 more elements
A hand-held power tool, comprising:
- a linear motor with a rotor;
- an exciter piston mechanically coupled to the rotor;
- and
- a bearing device with a rotor mounting, wherein a longitudinal movement of the rotor is supportable by the rotor mounting, and an exciter piston mounting, wherein a longitudinal movement of the exciter piston is supportable by the exciter piston mounting;
- wherein the rotor mounting has a first bearing and a second bearing, wherein the rotor is supported on opposing sides by the first bearing and the second bearing, and wherein the rotor mounting enables a swiveling of the rotor together with the exciter piston around an axis lying transverse to an axis of motion of a tool of the hand-held power tool;
- wherein the exciter piston mounting has a third bearing with a longitudinal guide along the axis of motion;
- and wherein the first bearing and the second bearing each include a spherical body, wherein the respective spherical bodies have a groove, and wherein the rotor engages in the respective grooves.
4 more elements
A hand-held power tool, comprising:
- a linear motor with a rotor;
- an exciter piston mechanically coupled to the rotor:
- and
- a bearing device with a rotor mounting, wherein a longitudinal movement of the rotor is supportable by the rotor mounting, and an exciter piston mounting, wherein a longitudinal movement of the exciter piston is supportable by the exciter piston mounting;
- wherein the rotor mounting has a first bearing and a second bearing, wherein the rotor is supported on opposing sides by the first bearing and the second bearing, and wherein the rotor mounting enables a swiveling of the rotor together with the exciter piston around an axis lying transverse to an axis of motion of a tool of the hand-held power tool;
- wherein the exciter piston mounting has a third bearing with a longitudinal guide along the axis of motion;
- and wherein the first bearing and the second bearing each include a calotte, wherein the respective calottes each have a recess, and wherein a protrusion of the first bearing and a protrusion of the second bearing are disposed within the respective recesses.
4 more elements
A hand-held power tool, comprising:
- a linear motor with a rotor;
- an exciter piston mechanically coupled to the rotor;
- and
- a bearing device with a rotor mounting, wherein a longitudinal movement of the rotor is supportable by the rotor mounting, and an exciter piston mounting, wherein a longitudinal movement of the exciter piston is supportable by the exciter piston mounting;
- wherein the rotor mounting has a first bearing and a second bearing, wherein the rotor is supported on opposing sides by the first bearing and the second bearing, and wherein the rotor mounting enables a swiveling of the rotor together with the exciter piston around an axis lying transverse to an axis of motion of a tool of the hand-held power tool;
- wherein the exciter piston mounting has a third bearing with a longitudinal guide along the axis of motion;
- and wherein the first bearing and the second bearing each include a spherical body, a first calotte, and a second calotte, wherein the first calotte and the second calotte are disposed on opposing ends of the respective first bearing and the second bearing.
4 more elements
Dependencies are inferred from the claim text.