Holding device for hand machine tools, in particular holding device for a drill and/or chipping hammer

Patent metadata

Field	Value
Publication number	US-9352460-B2
Application number	US-201013381542-A
Country	US
Kind code	B2
Filing date	Apr 30, 2010
Priority date	Jun 30, 2009
Publication date	May 31, 2016
Grant date	May 31, 2016

Abstract

A holding device for hand machine tools, in particular a drill and/or a chipping hammer holding device, includes a hammer tube and at least one blocking body, which, when installed, connects the hammer tube to at least one additional holding component. The blocking body is provided with at least one blocking surface that is curved around at least one load tipping axis.

First claim

The invention claimed is:

1. A hammer holding device for a portable power tool, that has a striker operable to engage a workpiece, the hammer holding device, comprising:
a hammer tube;
at least one holding component; and
at least one locking body which connects the hammer tube to the at least one holding component in a fitted state,
wherein the at least on locking body has at least one locking surface curved about at least on load tilting axis; and
wherein the at least one locking body is configured to tilt about the at least one load tilting axis in response to a main load of the portable power tool, the main load being a load acting on at least one of the at least one holding component and the hammer tube resulting from operation of the striker of the power tool to engage a workpiece, such that for each main load during operation of the portable power tool, in the fitted state, surface pressure between the at least one locking body and the at least one holding component is distributed over the at least one locking surface.

2. The holding device for a portable power tool as claimed in claim 1 , wherein the at least one locking surface is formed at least partly by a cambered surface.

3. The holding device for a portable power tool as claimed in claim 1 , wherein the at least one holding component diefines a tool holder having at least one holding surface which corresponds with the locking body in at least one operating state.

4. The holding device for a portable power tool as claimed in claim 3 , wherein the tool holder is configured to receive a hammer that is at least one of (i) a rotary hammer, and (ii) a chisel hammer.

5. The holding device for a portable power tool as claimed in claim 1 , wherein the hammer tube has at least one curved holding surface which corresponds with the at least one locking surface in at least one operating state.

6. The holding device for a portable power tool as claimed in claim 1 , wherein the at least one holding component includes a curved holding surface which corresponds with the at least one locking surface in at least one operating state.

7. The holding device for a portable power tool as claimed in claim 1 , wherein the locking body has, in the fitted state, a greater extent in a radial direction of the hammer tube than in an axial direction of the hammer tube.

8. The holding device for a portable power tool as claimed in claim 1 , wherein the locking body has at least one curved end face.

9. The holding device for a portable power tool as claimed in claim 1 , wherein the locking body has at least one curved lateral surface.

10. The holding device for a portable power tool as claimed in claim 1 , wherein the locking body has at least two curved locking surfaces.

11. The holding device for a portable power tool as claimed in claim 1 , wherein the at least one locking body is configured to tilt in a direction parallel to an axial direction of the hammer tube.

12. The holding device for a portable power tool as claimed in claim 1 , wherein the at least one locking body is configured to tilt in a direction parallel to a circumferential direction of the hammer tube.

13. A portable power tool comprising:
a tool-holding device including:
a hammer tube
at least one holding component configured to receive a tool; and
at least one locking body which connects the hammer tube to the at least one further holding component in a fitted state,
wherein the locking body has at least one locking surface curved about at least one load tilting axis: and
wherein the at least one locking body is configured to tilt about the at least one load tilting axis in response to a main load of the portable power tool, the main load being a load acting on at least one of the at least one holding component and the hammer tube resulting from operation of the striker of the power tool to engage a workpiece, such that for each main load during operation of the portable power tool, in the fitted state, surface pressure between the at least one locking body and the at least one holding component is distributed over the at least one locking surface.

14. The portable power tool of claim 13 , wherein the tool is at least one of (i) a rotary hammer, and (ii) a chisel hammer.

Assignees

• Steinke Hubert
• Schmid Lars
• Schnitzler Johannes
• Meixner Gerhard
• Koepf Christian
• Koalick Jan
• Bosch Gmbh Robert

Inventors

• Steinke Hubert
• Schmid Lars
• Schnitzler Johannes
• Meixner Gerhard
• Koepf Christian
• Koalick Jan

Classifications

• B25D2250/065

  Details regarding assembling of the tool · CPC title

• B25D2217/0019

  Guide-sleeves · CPC title

• B25D17/06 Primary

  Hammer pistons; Anvils {; Guide-sleeves for pistons} · CPC title

• B25D2250/351

  Use of pins · CPC title

• B25D17/08

  Means for retaining and guiding the tool bit, e.g. chucks {allowing axial oscillation of the tool bit (B25D17/005 takes precedence)} · CPC title