HAND POWER TOOL

• US 20140285971A1
• Filed: 03/20/2014
• Published: 09/25/2014
• Est. Priority Date: 03/21/2013
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Schuele, Manfred, Wanek, Helmut, Boeck, Cornelius, Schadow, Joachim, Maute, Joerg, Esenwein, Florian, Lutz, Manfred, Barth, Daniel
• Application Number:
  US14/220,314
• Publication Number:
  US 20140285971A1
• Time in Patent Office: Days
• US Class Current: 361/700
• CPC Class Codes: B24B 23/028 Angle tools
• CPC Class Codes: B24B 41/007 Weight compensation; Temperature compensation; Vibration damping
• CPC Class Codes: B25F 5/008 Cooling means
• CPC Class Codes: B25F 5/026 in the form of an auxiliary handle B25F5/024 takes precedence

Abstract

A hand power tool, in particular an angle grinder, includes a drive unit, an electronic unit, and a cooling device configured, at least partially, to cool the drive unit and/or the electronic unit. The cooling device includes at least one cooling unit configured, at least partially, for localized cooling.

Claims

1. A hand power tool, comprising:

a drive unit;

an electronic unit; and

a cooling device configured, at least partially, to cool one or more of the drive unit and the electronic unit, the cooling device including at least one cooling unit configured, at least partially, for localized cooling.

2. The hand power tool according to claim 1, wherein the at least one cooling unit is configured for active cooling.

3. The hand power tool according to claim 1, wherein the at least one cooling unit comprises at least one micro-cooling element.

4. The hand power tool according to claim 3, wherein the at least one micro-cooling unit includes one or more of a Peltier element and a heat pipe.

5. The hand power tool according to claim 1, wherein the cooling unit comprises at least one directing element configured to direct a cooling fluid in a localized manner to a region to be cooled.

6. The hand power tool according to claim 1, wherein the cooling device comprises a further cooling unit configured for large-area cooling.

7. The hand power tool according to claim 6, wherein the cooling unit and the further cooling unit are configured so as to be at least partially integral.

8. The hand power tool according to claim 1, wherein the drive unit comprises at least one EC motor.

11. The hand power tool according to claim 1, wherein the hand power tool is configured as an angle grinder.

9. A cooling device of a hand power tool, the hand power tool including a drive unit and an electronic unit, the cooling device comprising:

at least one cooling unit configured, at least partially, for localized cooling of one or more of the drive unit and the electronic unit.

10. A method for localized cooling of one or more of a drive unit and an electronic unit of a hand power tool, comprising:

cooling the one or more of the drive unit and the electronic unit with a cooling device, the cooling device including at least one cooling unit configured, at least partially, for localized cooling.