Tool attachment for a handheld machine tool

Patent metadata

Field	Value
Publication number	US-9849576-B2
Application number	US-201314079786-A
Country	US
Kind code	B2
Filing date	Nov 14, 2013
Priority date	Nov 15, 2012
Publication date	Dec 26, 2017
Grant date	Dec 26, 2017

Abstract

In a tool attachment having an attachment housing on which a fastening interface is situated for fastening to an handheld machine tool, the fastening interface having an angular position setting unit for setting a specified angular position of the tool attachment on the handheld machine tool, and being equipped with a locking unit which, in a locked state, locks the tool attachment for operation on the handheld machine tool in the specified angular position, and, in the unlocked state, makes possible drawing the tool attachment away from the handheld machine tool, the angular position setting unit is operable in the locked state of the locking unit, to enable a change in the specified angular position.

First claim

What is claimed is:

1. A tool attachment, comprising:
an attachment housing, on which a fastening element is situated for fastening to a handheld machine tool; and
a fastening interface having an angular position setting unit for setting a specified angular position of the tool attachment on the handheld machine tool, and having a locking unit which, in a locked state, locks the tool attachment for operation on the handheld machine tool in the specified angular position, and, in the unlocked state, provides for drawing the tool attachment away from the handheld machine tool;
wherein the angular position setting unit is operable in the locked state of the locking unit, to provide for a change in the specified angular position without unlocking the locking unit,
wherein the angular position setting unit is operable by a combined longitudinal and rotational motion of the attachment housing for changing the specified angular position.

2. The tool attachment of claim 1 , wherein the angular position setting unit has an angle setting element which is connected rigidly to the attachment housing.

3. The tool attachment of claim 2 , wherein the attachment housing and the angle setting element are configured in one piece.

4. The tool attachment of claim 2 , wherein the angle setting element is configured to be tube-shaped at least in sections and has an end face angle setting tooth ing.

5. The tool attachment of claim 2 , wherein the angle setting element is supported in the locking unit to be longitudinally and rotationally movable.

6. The tool attachment of claim 1 , wherein the locking unit has a locking body configured to be tube-shaped at least in sections.

7. The tool attachment of claim 6 , wherein the locking body has locking elements which are configured like bayonets so as to provide a bayonet connection.

8. The tool attachment of claim 6 , wherein the locking unit has an operating ring situated on the locking body, which is operable to lock the locking body to the handheld machine tool.

9. The tool attachment of claim 8 , wherein the locking body and the operating ring are configured in one piece.

10. The tool attachment of claim 6 , wherein a spring element is situated on the locking body, which is configured to apply a specified spring force to the attachment housing in the direction of the handheld machine tool, in the locked state.

11. The tool attachment of claim 10 , wherein, in the locked state, the attachment housing is displaceable in a direction facing away from the handheld machine tool, against the specified spring force.

12. The tool attachment of claim 1 , further comprising:
a drive shaft to which an operating member is assigned, which is configured, during fastening of the tool attachment to the handheld machine tool, to displace a locking sleeve, associated with a tool accommodation of the handheld machine tool, against a spring force applied by an associated spring element in a direction of the handheld machine tool.

13. A tool system, comprising:
a handheld machine tool;
a tool attachment, which has an attachment housing, on which a fastening interface is situated for fastening to the handheld machine tool, the fastening interface having an angular position setting unit for setting a specified angular position of the tool attachment on the handheld machine tool, and having a locking unit which, in a locked state, locks the tool attachment for operation on the handheld machine tool in the specified angular position, and, in the unlocked state, provides for drawing the tool attachment away from the handheld machine tool;
wherein the angular position setting unit is operable in the locked state of the locking unit, to enable a change in the specified angular position without unlocking the locking unit,
wherein the angular position setting unit is operable by a combined longitudinal and rotational motion of the attachment housing for changing the specified angular position.

14. A tool attachment, comprising:
an attachment housing, on which a fastening element is situated for fastening to a handheld machine tool; and
a fastening interface having an angular position setting unit for setting a specified angular position of the tool attachment on the handheld machine tool, and having a locking unit which, in a locked state, locks the tool attachment for operation on the handheld machine tool in the specified angular position, and, in the unlocked state, provides for drawing the tool attachment away from the handheld machine tool;
wherein the angular position setting unit is operable in the locked state of the locking unit, to provide for a change in the specified angular position,
wherein the angular position setting unit has an angle setting element which is connected rigidly to the attachment housing,
wherein the angle setting element is configured to be tube-shaped at least in sections and has an end face angle setting toothing.

15. A tool attachment, comprising:
an attachment housing, on which a fastening element is situated for fastening to a handheld machine tool; and
a fastening interface having an angular position setting unit for setting a specified angular position of the tool attachment on the handheld machine tool, and having a locking unit which, in a locked state, locks the tool attachment for operation on the handheld machine tool in the specified angular position, and, in the unlocked state, provides for drawing the tool attachment away from the handheld machine tool;
wherein the angular position setting unit is operable in the locked state of the locking unit, to provide for a change in the specified angular position without unlocking the locking unit,
wherein the angular position setting unit has an angle setting element which is connected rigidly to the attachment housing,
wherein the angle setting element is supported in the locking unit to be longitudinally and rotationally movable.

Assignees

• Bosch Gmbh Robert

Inventors

• Tussing Torsten

Classifications

• 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

• B25B23/0007

  Connections or joints between tool parts · CPC title

• Y10T403/32418

  Plural distinct positions · CPC title

• B25F3/00

  Associations of tools for different working operations with one portable power-drive means; Adapters therefor · CPC title

• B23B31/026 Primary

  the radial or angular position of the tool being adjustable (boring heads with tools moving radially B23B29/034; holding tools yieldably B23B31/08; with means for adjusting the chuck with respect to the working spindle B23B31/36) · CPC title