Heat-dissipation component for handheld machine tool

Patent metadata

Field	Value
Publication number	US-9682468-B2
Application number	US-201113825183-A
Country	US
Kind code	B2
Filing date	Sep 7, 2011
Priority date	Sep 20, 2010
Publication date	Jun 20, 2017
Grant date	Jun 20, 2017

Abstract

A handheld machine tool has a drive motor for driving a tool holder, in which a tool is able to be accommodated. In addition, a cam-action mechanism for generating a hammer function is provided, which includes a cam-action mechanism holder and a notched disk. The cam-action mechanism holder is in contact with a heat-dissipating component situated inside the housing.

First claim

What is claimed is:

1. A handheld machine tool, comprising:
a tool holder to accommodate a tool;
a drive motor to drive the tool holder; and
a cam-action mechanism including a cam-action mechanism holder and a notched disk,
wherein the cam-action mechanism holder is in contact with a heat-dissipating component situated inside a housing of the handheld machine tool,
wherein the heat-dissipating component axially supports the cam-action mechanism holder and exerts an axial force thereon in an axial direction away from the tool holder towards the drive motor.

2. The hand-held machines tool as recited in claim 1 , wherein the hand-held machine tool is a hammer drill.

3. The hand-held machine tool as recited in claim 1 , wherein holding flanges are situated on a radial outside of the cam-action mechanism holder, on which the heat-dissipating component exerts an axial force.

4. The hand-held machine tool as recited in claim 1 , wherein the heat-dissipating component is mounted on the housing in place relative to with the aid of affixation elements.

5. The hand-held machine tool as recited in claim 1 , wherein the heat-dissipating component is configured in the form of a cup.

6. The hand-held machine tool as recited in claim 5 , wherein the heat-dissipating component is fixed in place inside the housing of the handheld machine tool via a bottom of the cup.

7. The handheld machine tool as recited in claim 5 , wherein the heat-dissipating component has a recess in a bottom of the cup in which the cam-action mechanism holder is accommodated.

8. The hand-held machine tool as recited in claim 5 , wherein an open cup side of the heat-dissipating component faces the tool holder.

9. The hand-held machine tool as recited in claim 1 , wherein the heat-dissipating component extends up to an end face of the housing adjacent to the tool holder.

10. The hand-held machine tool as recited in claim 1 , wherein the heat-dissipating component is made of metal.

11. The hand-held machine tool as recited in claim 1 , wherein the cam-action mechanism holder is situated adjacent to an end face of the housing facing the tool holder.

12. The hand-held machine tool as recited in claim 1 , further comprising:
at least one spindle bearing configured to support a drive spindle, the at least one spindle bearing being axially disposed inside the housing on a side of the cam-action mechanism holder facing away from the tool holder.

13. A handheld machine tool, comprising:
a tool holder to accommodate a tool;
a drive motor to drive the tool holder; and
a cam-action mechanism including a cam-action mechanism holder and a notched disk,
wherein the cam-action mechanism holder is in contact with a heat-dissipating component situated inside a housing of the handheld machine tool,
wherein the heat-dissipating component axially supports the cam-action mechanism holder and exerts an axial force thereon,
wherein at least one holding flange is situated on a radial outside of the cam-action mechanism holder, on which the heat-dissipating component rests and exerts an axial force in an axial direction away from the tool holder towards the drive motor.

14. A handheld machine tool, comprising:
a tool holder to accommodate a tool;
a drive motor to drive the tool holder; and
a cam-action mechanism including a cam-action mechanism holder and a notched disk,
wherein the cam-action mechanism holder is in contact with a heat-dissipating component situated inside a housing of the handheld machine tool,
wherein the heat-dissipating component axially supports the cam-action mechanism holder and exerts an axial force thereon,
wherein the cam-action mechanism holder includes at least one holding flange on a radial outside of the cam-action mechanism holder and the heat-dissipating component rests on the at least one holding flange such that the cam-action mechanism holder is mounted in place relative to the housing by an axial force exerted by the heat-dissipating component on the at least one holding flange.

Assignees

• Blum Jens
• Roehm Heiko
• Herr Tobias
• Bosch Gmbh Robert

Inventors

• Blum Jens
• Roehm Heiko
• Herr Tobias

Classifications

• B25D11/10 Primary

  comprising a cam mechanism · CPC title

• B25D2250/121

  Housing details · CPC title

• B25D2217/0061

  related to cooling · CPC title

• B25D11/106 Primary

  cam member and cam follower having the same shape (B25D11/104 takes precedence) · CPC title

• B25D17/20

  Devices for cleaning or cooling tool or work · CPC title