Hand-held machine tool comprising a clamping collar

Patent metadata

Field	Value
Publication number	US-10882176-B2
Application number	US-201113818411-A
Country	US
Kind code	B2
Filing date	Jul 27, 2011
Priority date	Aug 23, 2010
Publication date	Jan 5, 2021
Grant date	Jan 5, 2021

Abstract

The disclosure relates to a hand-held machine tool, comprising a housing and a drive unit, a gearbox unit which is provided to convert a rotary motion of the drive unit into an oscillating motion and has an output shaft, and a tool holder for fastening at least one tool, said tool holder being drivable in an oscillating manner via the output shaft the gearbox unit. According to the disclosure, the hand-held machine tool comprises a clamping collar, which extends in a circumferential direction at least partially around the output shaft.

First claim

The invention claimed is:

1. Accessory mounting device of a hand-held machine tool, comprising:
a fastening unit including a cylindrical clamping ring having a circumference and defining a radial direction extending to and intersecting said circumference; and
at least one accessory coupling unit integral with said clamping ring at the intersection of said radial direction and said circumference of said clamping ring and including a holding element for receiving an accessory therethrough in a direction perpendicular to the radial direction at the intersection of said radial direction and said circumference and a fastening element for fastening the accessory to said holding element,
wherein the hand-held machine tool includes (i) a housing including a machining-side-facing end in a direction of principal extent of the housing, (ii) a drive unit, (iii) a gearbox unit disposed within said housing and configured to convert a rotary motion of the drive unit into an oscillating motion, the gearbox unit having an output shaft extending perpendicular to the direction of principal extent of the housing, (iv) a tool holder configured to fasten at least one insert tool, and further configured to be driven in an oscillating manner via the output shaft of the gearbox unit, and (v) a cylindrical clamping collar extending from said housing and configured to extend away from the machining-side-facing end and at least partially around the output shaft in a peripheral direction, the clamping collar defining a continuous circumferential groove,
wherein the accessory mounting device is configured to be fastened by the fastening unit to the clamping collar of the hand-held machine tool,
wherein the clamping ring is sized to be received entirely within said continuous circumferential groove, and
wherein the holding element and the fastening element are configured to permit adjustment of the accessory in said direction perpendicular to the radial direction at the intersection of said radial direction and said circumference.

2. Accessory mounting device according to claim 1 , wherein the clamping collar, in a longitudinal direction of the output shaft, has a length of at least 3 mm.

3. Accessory mounting device according to claim 1 , wherein:
the clamping collar has a shell surface profiled in the peripheral direction, and
the shell surface is configured to secure the accessory mounting device in a positive-locking manner in the peripheral direction.

4. Accessory mounting device according to claim 1 , wherein:
the clamping collar has a shell surface which is profiled in a longitudinal direction of the output shaft, and
the shell surface is configured to secure the accessory mounting device in a positive-locking manner in the longitudinal direction.

5. Accessory mounting device according to claim 1 , wherein the clamping ring is of resiliently elastic configuration.

6. Accessory mounting device according to claim 1 , wherein the clamping ring is profiled in a peripheral direction.

7. Accessory mounting device according to claim 1 , wherein the clamping ring is open in a radial direction.

Assignees

• Fuchs Rudolf
• Bosch Gmbh Robert

Inventors

• Fuchs Rudolf

Classifications

• B24B23/04 Primary

  with oscillating grinding tools; Accessories therefor · CPC title

• B24B27/08

  being portable · CPC title

• B27B19/006

  with oscillating saw blades; Hand saws with oscillating saw blades · CPC title

• B25F5/00 Primary

  Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for · CPC title