Tool attachment for a hand-held machine tool

Patent metadata

Field	Value
Publication number	US-10011008-B2
Application number	US-201414460557-A
Country	US
Kind code	B2
Filing date	Aug 15, 2014
Priority date	Nov 15, 2012
Publication date	Jul 3, 2018
Grant date	Jul 3, 2018

Abstract

A tool system having a hand-held machine tool including a tool holder for receiving an insert tool; and a mounting interface configured for mounting thereon: an angle attachment that includes an angle locking section for locking on the mounting interface and an angle drive unit; and an eccentric attachment that includes an eccentric locking section for locking on the mounting interface and an eccentric drive unit.

First claim

What is claimed is:

1. A tool system, comprising:
an angle attachment that includes (i) an angle locking section for locking on a mounting interface of a hand-held machine tool and (ii) an angle drive unit;
an eccentric attachment that includes (i) an eccentric locking section for locking on the mounting interface of the hand-held machine tool and (ii) an eccentric drive unit;
a hammer-blow attachment that includes (i) a hammer-blow locking section for locking on the mounting interface of the hand-held machine tool and (ii) a striking-mechanism drive unit; and
the hand-held machine tool including:
a tool holder for receiving an insert tool; and
the mounting interface on which the angle attachment is mountable, the eccentric attachment is mountable, and the hammer-blow attachment is mountable, wherein each of the angle attachment, the eccentric attachment, and the hammer-blow attachment is alternately mountable on the mounting interface,

wherein the tool holder includes:
a receiving member for receiving the insert tool; and
a locking sleeve,

wherein the tool holder has a spring element which preloads the locking sleeve in an axial direction away from the hand-held machine tool, and
wherein each of the angle attachment and the eccentric attachment and the hammer-blow attachment has an actuating element configured to act upon, when mounting the respective attachment on the hand-held machine tool, the locking sleeve axially in a direction of the hand-held machine tool.

2. The tool system as recited in claim 1 , wherein the mounting interface is configured for further mounting thereon a drill-chuck attachment, wherein the drill-chuck attachment includes a drill-chuck locking section for locking on the mounting interface and a clamping-chuck unit.

3. The tool system as recited in claim 1 , wherein a drive shaft of each of the angle attachment and the eccentric attachment and the hammer-blow attachment is coupled in a manner fixed against rotation relative to the tool holder for rotating actuation of the respective attachment when the respective attachment is mounted on the hand-held machine tool.

4. The tool system as recited in claim 3 , wherein the drive shaft of each of the angle attachment and the eccentric attachment and the hammer-blow attachment has a multi-edge outer contour and the tool holder has a receiving member having a multi-edge inner receiver for receiving the multi-edge outer contour of the drive shaft.

5. The tool system as recited in claim 1 , wherein the mounting interface includes:
first securing elements for axial securing of the angle attachment and the eccentric attachment and the hammer-blow attachment; and
second securing elements for protecting the angle attachment and the eccentric attachment and the hammer-blow attachment against twisting on the hand-held machine tool.

6. The tool system as recited in claim 1 , wherein the mounting interface has receivers shaped as grooves having end areas that taper in a direction away from the hand-held machine tool, wherein the receivers shaped as grooves are configured to protect the angle attachment and the eccentric attachment against twisting and to axially secure the angle attachment and the eccentric attachment on the hand-held machine tool.

7. The tool system as recited in claim 1 , wherein the mounting interface includes:
holding elements in the form of bayonet projections for axially securing the angle attachment and the eccentric attachment and the hammer-blow attachment; and
angle-adjustment components for protecting the angle attachment and the eccentric attachment and the hammer-blow attachment against twisting on the hand-held machine tool.

8. The tool system as recited in claim 1 , wherein the locking section of each of the angle attachment and the eccentric attachment and the hammer-blow attachment has a plurality of locking elements for axially securing and for protecting the respective attachment against twisting on the hand-held machine tool.

9. The tool system as recited in claim 1 , wherein the locking section of each of the angle attachment and the eccentric attachment and the hammer-blow attachment includes:
holding elements in the form of bayonet projections for axially securing the respective attachment; and
angle-adjustment serrations for protecting the respective attachment against twisting on the hand-held machine tool.

10. A tool system, comprising:
an angle attachment that includes (i) an angle locking section for locking on a mounting interface of a hand-held machine tool and (ii) an angle drive unit;
an eccentric attachment that includes (i) an eccentric locking section for locking on the mounting interface of the hand-held machine tool and (ii) an eccentric drive unit;
a hammer-blow attachment that includes (i) a hammer-blow locking section for locking on the mounting interface of the hand-held machine tool and (ii) a striking-mechanism drive unit; and
the hand-held machine tool including:
a tool holder for receiving an insert tool; and
the mounting interface on which the angle attachment is mountable, the eccentric attachment is mountable, and the hammer-blow attachment is mountable, wherein each of the angle attachment, the eccentric attachment, and the hammer-blow attachment is alternately mountable on the mounting interface,

wherein the locking section of each of the angle attachment, the eccentric attachment, and the hammer-blow attachment has a plurality of locking elements for axially securing and for protecting the respective attachment against twisting on the hand-held machine tool,
wherein the plurality of locking elements are in the form of locking spheres.

11. The tool system as recited in claim 10 , wherein the tool holder includes:
a receiving member for receiving the insert tool; and
a locking sleeve.

12. The tool system as recited in claim 11 , wherein the insert tool has an outer multi-edge coupling and the receiving member has an inner multi-edge receiver for receiving the insert tool.

13. The tool system as recited in claim 11 , wherein the tool holder has a spring element which preloads the locking sleeve in an axial direction away from the hand-held machine tool.

14. The tool system as recited in claim 13 , wherein each of the angle attachment and the eccentric attachment and the hammer-blow attachment has an actuating element configured to shift, when mounting the respective attachment on the hand-held machine tool, the locking sleeve against a spring force applied by the spring element, in a direction of the hand-held machine tool.

15. The tool system as recited in claim 13 , wherein each of the angle attachment and the eccentric attachment has an actuating element configured to act upon, when mounting the respective attachment on the hand-held machine tool, the locking sleeve axially in a direction of the hand-held machine tool.

16. The tool system as recited in claim 14 , wherein the actuating element of the angle attachment is assigned to a drive shaft of the angle attachment, and the actuating element of the eccentric attachment is assigned to a drive shaft of the eccentric attachment, and the actuating element of the hammer-blow attachment is assigned to drive a shaft of the hammer-blow attachment.

17. The tool system as recited in claim 16 , wherein the actuating element surrounds the drive shaft at least sectionally in sleeve-shaped fashion.

18. The tool system as recited in claim 17 , wherein the actuating element is sleeve-shaped and is disposed coaxially relative to the drive shaft.

Assignees

• Bosch Gmbh Robert

Inventors

• Herr Tobias
• Saur Dietmar
• Fischer Gerald
• Welke Joerg
• Blum Jens
• Necker Andreas
• Tussing Torsten

Classifications

• B25D11/10

  comprising a cam mechanism · CPC title

• B25F3/00 Primary

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

• Y10T279/3406

  Adapter · CPC title

• B23B31/1071

  Retention by balls (balls acting as jaws B23B31/22) · CPC title

• B23Q3/12

  for securing to a spindle in general (B23Q3/152 takes precedence; chucks B23B31/02) · CPC title