IP Library › Granted Patent US 9,010,456
Granted Patent B2
US 9,010,456 · App. 13/139,775 · Granted Apr 21, 2015

Hand-held power tool

Inventors: Kurt Sieber (Leinfelden-Echterdingen, DE); Otto Baumann (Leinfelden-Echterdingen, DE); Elisabeth Michl (Waldenbuch, DE); Hardy Schmid (Stuttgart, DE); Holger Ruebsaamen (Stuttgart, DE); Tobias Herr (Stuttgart, DE)
Assignee: Robert Bosch GmbH
B25D16/006B25D11/125B25D2211/006B25D2216/0015B25D2216/0023B25D2216/0038
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Quick Facts
Patent No.
US 9,010,456
App. No.
13/139,775
Granted
Apr 21, 2015
Kind
B2
Abstract

A hand-held power tool, particularly a hammer drill, includes a work spindle, a hand-held power tool housing and an intermediate shaft, which is arranged in parallel to the work spindle and mounted in an axially displaceable manner for changing the operational mode, and a tooth sleeve, which is provided to transfer a torque to the intermediate shaft. The tooth sleeve is fixed in the axial direction by means of the hand-held power tool housing.

Claims (37)

1. A hand-held power tool, comprising:

a work spindle;

a hand-held power tool housing;

a motor shaft arranged parallelwise in relation to the work spindle;

an intermediate shaft that is arranged parallelwise in relation to the work spindle and mounted in an axially displaceable manner for a change of operating mode, and having a toothed sleeve configured to transmit a torque to the intermediate shaft, the toothed sleeve being fixed in the axial direction by the hand-held power tool housing;

a switching element, which is axially displaceable relative to the toothed sleeve for at least one change of operating mode; and

a coupling element connecting the switching element and the toothed sleeve to one another in a rotationally fixed manner irrespective of an axial displacement of the switching element and the toothed sleeve relative to one another,

wherein the intermediate shaft and the switching element are configured to be axially displaceable relative to one another to change the operating mode.

2. The hand-held power tool as claimed in claim 1 , further comprising a connecting element, which connects the intermediate shaft and the switching element to one another in a rotationally fixed manner in at least one operating mode.

3. The hand-held power tool as claimed in claim 1 , wherein a connecting element is opened in the case of a chiseling operation.

4. The hand-held power tool as claimed in claim 1 , further comprising a connecting element, which, in at least one operating mode, transmits at least a torque from the switching element to a stroke generator.

5. The hand-held power tool as claimed in claim 1 , further comprising an additional bearing element configured to seat at least the toothed sleeve.

6. The hand-held power tool as claimed in claim 5 , wherein the additional bearing element is at least connected to a housing element in a rotationally fixed manner.

7. The hand-held power tool as claimed in claim 1 , further comprising a journal, which is integral with a housing element and configured to seat at least the toothed sleeve.

8. The hand-held power tool as claimed in claim 1 , further comprising a bearing, which seats at least the toothed sleeve in a stroke generator.

9. The hand-held power tool as claimed in claim 1 , wherein the toothed sleeve has a journal.

10. The hand-held power tool as claimed in claim 1 , wherein the coupling element includes a splined-shaft profile.

11. A hand-held power, comprising:

a work spindle;

a hand-held power tool housing;

a motor shaft arranged parallelwise in relation to the work spindle;

an intermediate shaft that is arranged parallelwise in relation to the work spindle and mounted in an axially displaceable manner for a change of operating mode, and having a toothed sleeve configured to transmit a torque to the intermediate shaft, the toothed sleeve being fixed in the axial direction by the hand-held power tool housing;

a switching element, which is axially displaceable relative to the toothed sleeve for at least one change of operating mode; and

a coupling element connecting the switching element and the toothed sleeve to one another in a rotationally fixed manner irrespective of an axial displacement of the switching element and the toothed sleeve relative to one another,

wherein the toothed sleeve at least partially surrounds the switching element.

12. A hand-held power tool, comprising:

a work spindle;

a hand-held power tool housing;

a motor shaft arranged parallelwise in relation to the work spindle;

an intermediate shaft that is arranged parallelwise in relation to the work spindle and mounted in an axially displaceable manner for a change of operating mode, and having a toothed sleeve configured to transmit a torque to the intermediate shaft, the toothed sleeve being fixed in the axial direction by the hand-held power tool housing;

a switching element, which is axially displaceable relative to the toothed sleeve for at least one change of operating mode;

a coupling element connecting the switching element and the toothed sleeve to one another in a rotationally fixed manner irrespective of an axial displacement of the switching element and the toothed sleeve relative to one another; and

a spring element that at least partially surrounds the toothed sleeve.

13. The hand-held power tool as claimed in claim 12 , wherein the spring element is configured to displace at least the switching element at least in the case of a change of operating mode.

14. The hand-held power tool as claimed in claim 12 , wherein:

the toothed sleeve includes a first surface against which a first end of the spring abuts; and

the switching element includes a second surface against which a second end of the spring element abuts such that the spring element biases the switching element in a direction away from the toothed sleeve.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 15, 2011
From: SIEBER, KURT; BAUMANN, OTTO; MICHL, ELISABETH; SCHMID, HARDY; RUEBSAAMEN, HOLGER; HERR, TOBIAS
To: ROBERT BOSCH GMBH
Reel/Frame 026446/0931 →
Priority Claims (1)
DE 10 2008 054 692 · Dec 16, 2008 · national
Continuity (1)
Related Publication 20110247848A1 · Oct 13, 2011