Hand-power tool

Patent metadata

Field	Value
Publication number	US-9539691-B2
Application number	US-201214125524-A
Country	US
Kind code	B2
Filing date	Apr 26, 2012
Priority date	Jun 14, 2011
Publication date	Jan 10, 2017
Grant date	Jan 10, 2017

Abstract

A hand-power tool includes at least one tool spindle and a drive unit configured to drive the tool spindle at a rotational speed greater than 10,000 min −1 . The hand-power tool further includes at least one lighting unit that has at least two lighting mechanisms that are configured to illuminate a work area. The lighting mechanisms are arranged on an axial plane of the tool spindle at an angle of less than 125 degrees relative to each other with respect to the tool spindle.

First claim

The invention claimed is:

1. A hand-held power tool, comprising:
at least one tool spindle;
an electrically commutated drive unit configured to drive the tool spindle at a rotational speed higher than 10 000 min −1 ;
a lithium-based accumulator configured to supply the electrically commutated drive unit with electrical energy; and
at least one lighting unit having at least two lighting mechanisms configured to illuminate a work area,
wherein the lighting mechanisms are arranged at an angle of less than 125 degrees with respect to one another in relation to the tool spindle on an axial plane of the tool spindle.

2. The hand-held power tool as claimed in claim 1 , wherein the lighting unit surrounds the tool spindle by more than 90 degrees on at least one plane.

3. The hand-held power tool as claimed in claim 1 , wherein the lighting unit has at least one delay unit configured to delay switching off the lighting unit by a provided time after switching off the electrically commutated drive unit.

4. The hand-held power tool as claimed in claim 1 , wherein the lighting unit has at least one optical element configured to scatter a light beam of at least one of the lighting mechanisms.

5. The hand-held power tool as claimed in claim 1 , wherein the lighting unit has an optical element configured to attach at least one housing element.

6. The hand-held power tool as claimed in claim 1 , wherein the lighting mechanisms are configured to emit light with different colors.

7. The hand-held power tool as claimed in claim 1 , further comprising a display unit configured at least partially in one piece with the lighting unit.

8. The hand-held power tool as claimed in claim 1 , wherein the electrically commutated drive unit is connected in a gearless fashion to the tool spindle.

9. The hand-held power tool as claimed in claim 1 , further comprising a hose coupling connecting the electrically commutated drive unit to the tool spindle.

10. The hand-held power tool as claimed in claim 1 , wherein a first lighting mechanism of the at least two lighting mechanisms is configured to illuminate the work area with a light of a first color, and a second lighting mechanism of the at least two lighting mechanisms is configured to illuminate the work area with a light of a second color, the second color a color different from the first color.

11. The hand-held power tool as claimed in claim 10 , further comprising:
a computing unit operably connected to the first and the second lighting mechanisms, the computing unit configured to control the first and the second lighting mechanisms based upon a respective first and second characteristic variable.

12. The hand-held power tool as claimed in claim 11 , wherein the first characteristic variable is a temperature of the electrically commutated drive unit.

13. The hand-held power tool as claimed in claim 11 , wherein the first characteristic variable is a rotational speed of the electrically commutated drive unit.

14. The hand-held power tool as claimed in claim 11 , wherein the first characteristic variable is a state of charge of the lithium-based accumulator.

15. The hand-held power tool as claimed in claim 11 , wherein the first characteristic variable is a temperature of the lithium-based accumulator.

Assignees

• Hirschburger Wolfgang
• Bosch Gmbh Robert

Inventors

• Hirschburger Wolfgang

Classifications

• B25F5/021 Primary

  with guiding devices (guiding devices for hand tools on stands or supports B25H1/0078) · CPC title

• B23Q17/2404 Primary

  Arrangements for improving direct observation of the working space, e.g. using mirrors or lamps (structural combinations of lighting devices with other articles, not otherwise provided for, F21V33/00) · CPC title

• B25F5/02

  Construction of casings, bodies or handles {(B25F5/006, B25F5/008 take precedence)} · CPC title