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The invention relates to a hand-held power tool for predominantly percussively driven tool attachments, in particular hammer drills and/or chisel-action hammers. The power tool includes a percussion axis and an intermediate shaft that is parallel to the percussion axis in which a first stroke genera

The invention relates to a hand-held power tool for predominantly percussively driven tool attachments, in particular hammer drills and/or chisel-action hammers. The power tool includes a percussion axis and an intermediate shaft that is parallel to the percussion axis in which a first stroke generating device having a first stroke element for a percussion drive is arranged in or on the intermediate shaft and can be driven by the intermediate shaft. Additionally, at least one other second stroke generating device having at least one second stroke element is provided for driving a counter oscillator. A phase displacement that is different from zero and that is unequal to 180° takes place between a movement of the first stroke element and a movement of at least one second stroke element.

대표청구항 ▼

1. A hand-held power tool for insert tools primarily driven in a percussive fashion comprising: an impact axis;an intermediate shaft parallel to the impact axis;a first stroke producing device for an impact drive that is situated in or on the intermediate shaft, which is configured to be driven by t

1. A hand-held power tool for insert tools primarily driven in a percussive fashion comprising: an impact axis;an intermediate shaft parallel to the impact axis;a first stroke producing device for an impact drive that is situated in or on the intermediate shaft, which is configured to be driven by the intermediate shaft, and which has a first stroke element; andat least one additional second stroke producing device, which has at least one second stroke element and which is for driving a counter-oscillator, wherein between a motion of the first stroke element and a motion of the at least one second stroke element, a phase shift is provided that is not equal to zero and is also not equal to 180°. 2. The hand-held power tool as recited in claim 1, wherein the at least one additional second stroke producing device is configured to be driven by the intermediate shaft. 3. The hand-held power tool as recited in claim 1, wherein the first stroke producing device is situated in or on a region of the intermediate shaft oriented toward a drive motor and the at least one additional second stroke producing device is situated in or on a region of the intermediate shaft oriented away from the drive motor. 4. The hand-held power tool as recited in claim 1, wherein the phase shift is not equal to 90°. 5. The hand-held power tool as recited in claim 1, wherein counter-oscillator has at least one counter-oscillator mass that is guided along a linear or nonlinear movement path. 6. The hand-held power tool as recited in claim 1, wherein the counter-oscillator has a center-of-gravity path situated close to the impact axis that is oriented parallel to the impact axis. 7. The hand-held power tool as recited in claim 1, wherein the second stroke producing device is equipped with a clutch device that is able to couple the second stroke producing device to the first stroke producing device for co-rotation. 8. The hand-held power tool as recited in claim 7, wherein the clutch device is embodied in the form of a meshing clutch in which an axial movement path is provided between an engaged state and a disengaged state. 9. The hand-held power tool as recited in claim 8, wherein a stroke of the stroke element of the second stroke producing device changes in linear fashion along the axial movement path. 10. The hand-held power tool as recited in claim 1, wherein the second stroke producing device has in addition a deflecting element that is configured to drive a second counter-oscillator. 11. The hand-held power tool as recited in claim 1, wherein the first stroke producing device is embodied as a first wobble drive, which includes a drive sleeve supporting at least one first raceway, a wobble bearing, and a wobble plate, in which a wobble pin functioning as a stroke element is situated on the wobble plate. 12. The hand-held power tool as recited in claim 11, wherein the second stroke producing device is embodied as a second wobble drive, which includes at least one second drive sleeve supporting a second raceway, a second wobble bearing, and a second wobble plate with a wobble pin situated on the second wobble plate. 13. The hand-held power tool as recited in claim 12, wherein the drive sleeve of the first wobble drive and the drive sleeve of the second wobble drive are connected to each other for co-rotation, and are embodied of one piece with each other, thus defining a rotational position of the first raceway relative to the second raceway. 14. The hand-held power tool as recited in claim 12, wherein the drive sleeve of the first wobble drive and the drive sleeve of the second wobble drive are detachably connected to each other for co-rotation, and an adjusting device is provided to adjustably define a rotational position of the first raceway relative to the second raceway. 15. The hand-held power tool as recited in claim 11, wherein the second stroke producing device is embodied as a cylindrical cam drive with a curved track, which is situated on a circumference surface and deflects the at least one additional second stroke element, in which the at least one second stroke element deflects the counter-oscillator along the curved track. 16. The hand-held power tool as recited in claim 15, wherein the cam drive is embodied as an end-surface cam drive or as a cam drive equipped with a surface profile, in which a pressing element acts on the counter-oscillator, making it possible for the counter-oscillator to be pressed against the surface profile and deflected so that it follows the surface profile. 17. The hand-held power tool as recited in claim 11, wherein the second stroke producing device is embodied as a connecting rod drive in which the counter-oscillator is operatively connected to the intermediate shaft by means of a connecting rod. 18. The hand-held power tool as recited in claim 11, wherein the second stroke producing device is embodied as a crank drive, in which the counter-oscillator is operatively connected to a crank disk by means of a connecting rod. 19. The hand-held power tool as recited in claim 11, wherein the second stroke producing device is embodied as a slotted link drive in which the counter-oscillator is provided with a slotted link. 20. The hand-held power tool as recited in claim 11, wherein the second stroke producing device is embodied as a rocker arm drive, in which an eccentric cam wheel situated on the intermediate shaft drive a rocker arm. 21. The hand-held power tool as recited in claim 1, wherein a motion sequence of the at least one additional second stroke element has a time behavior that differs from a sinusoidal shape. 22. The hand-held power tool as recited in claim 1, wherein a deflection of the first stroke element has a first frequency and a deflection of the second stroke element of the at least one additional second stroke producing device has a second frequency that differs from the first frequency, and the second frequency is approximately half the first frequency. 23. The hand-held power tool as recited in claim 1, wherein between the first stroke producing device and the at least one additional second stroke producing device, a bearing device is provided, which is affixed to a machine housing of the hand-held power tool and is for supporting the intermediate shaft in rotary fashion in the machine housing.