Hand-held power tool

Patent metadata

Field	Value
Publication number	US-9266228-B2
Application number	US-201013381459-A
Country	US
Kind code	B2
Filing date	Jun 2, 2010
Priority date	Jul 3, 2009
Publication date	Feb 23, 2016
Grant date	Feb 23, 2016

Abstract

A hand-held power tool, in particular an impact drill driver, has a gearbox assemblage, a hammer impact mechanism, and a tool spindle. The hammer impact mechanism includes a striker that at least partly surrounds the tool spindle in at least one plane.

First claim

What is claimed is:

1. A hand-held power tool, comprising:
a gearbox assemblage;
a hammer impact mechanism; and
a tool spindle;
wherein the hammer impact mechanism includes:
a striker that at least partly surrounds the tool spindle in at least one plane,
a resilient lever element embodied as a bracket which has a region that is penetrated by the tool spindle, wherein the resilient lever element is supported pivotably around a pivot axis oriented perpendicular to a rotation axis of the tool spindle, which is adapted to drive the striker of the hammer impact mechanism in at least one operating state, and
a pivot shaft oriented perpendicular to the rotation axis of the tool spindle around which the resilient lever element is tiltable.

2. A hand-held power tool, comprising:
a gearbox assemblage;
a hammer impact mechanism; and
a tool spindle including a tool mounting device;
wherein the hammer impact mechanism includes a linearly moveable striker that at least partly surrounds the tool spindle in at least one plane,
wherein in at least one operating state, the striker impacts the tool spindle linearly,
wherein the tool spindle includes a rotary entrainment contour which is for creating an axially displaceable and nonrotatable connection with the gearbox assemblage along a rotation axis of the hand-held power tool for pickoff of a rotation speed of the tool spindle in at least one operating state.

3. The hand-held power tool of claim 2 , wherein the hammer impact mechanism includes a resilient lever element, supported pivotably around a pivot axis, which is to drive the striker of the hammer impact mechanism in at least one operating state.

4. The hand-held power tool of claim 2 , wherein in at least one operating state, the striker is freely movable in a principal working direction.

5. The hand-held power tool of claim 2 , wherein the gearbox assemblage includes at least one sun gear that, in at least one operating state, is connected nonrotatably to at least a part of the hammer impact mechanism.

6. The hand-held power tool of claim 2 , further comprising:
an electric motor and a battery connector unit for supplying the electric motor with energy.

7. The hand-held power tool of claim 2 , wherein the hammer impact mechanism includes a releasable clutch apparatus to transfer a rotary motion.

8. The hand-held power tool of claim 7 , wherein the clutch apparatus is to be closed by a force transferred via the tool spindle.

9. The hand-held power tool of claim 7 , wherein an operating element by way of which the clutch apparatus can be actuated.

10. The hand-held power tool of claim 2 , wherein a torque setting unit has a clutch apparatus that is for limiting, in at least one operating state, a maximum torque transferred via the tool spindle.

11. The hand-held power tool of claim 2 , wherein the hammer impact mechanism has a drive rotation element having a rotation axis that is disposed coaxially with at least a part of the tool spindle.

12. The hand-held power tool of claim 2 , wherein the gearbox assemblage has at least one gear stage element to split a power flow so as to make available different rotation speeds for an impact mode and a rotation mode.

13. The hand-held power tool of claim 2 , wherein the gearbox assemblage includes at least one ring gear that is supported axially movably.

14. The hand-held power tool of claim 2 , wherein the gearbox assemblage includes at least one gear stage to increase a rotation speed for an impact drive.

15. The hand-held power tool of claim 2 , wherein the hand-held power tool is an impact drill driver.

16. The hand-held power tool of claim 2 , wherein, in at least one operating state, the striker impacts a transfer element of the tool spindle linearly.

17. The hand-held power tool of claim 2 , wherein the striker has an impact surface that is oriented substantially perpendicular relative to the tool spindle and the transfer element has an impact surface that is oriented substantially perpendicular relative to the tool spindle, the impact surface of the striker and the impact surface of the transfer element are oriented substantially parallel to one another.

Assignees

• Hecht Joachim
• Roehm Heiko
• Herr Tobias
• Bosch Gmbh Robert

Inventors

• Hecht Joachim
• Roehm Heiko
• Herr Tobias

Classifications

• B25D2211/006

  Parallel drill and motor spindles · CPC title

• B25D16/003 Primary

  Clutches specially adapted therefor · CPC title

• B25D2217/0015

  Anvils · CPC title

• B25D2250/245

  Spatial arrangement of components of the tool relative to each other · CPC title

• B25D11/062

  comprising a wobbling mechanism, swash plate · CPC title