Tool attachment and tool system

Patent metadata

Field	Value
Publication number	US-10478930-B2
Application number	US-201514704008-A
Country	US
Kind code	B2
Filing date	May 5, 2015
Priority date	May 7, 2014
Publication date	Nov 19, 2019
Grant date	Nov 19, 2019

Abstract

A tool attachment includes: an attachment housing; a fastening interface situated on the attachment housing for detachable fastening on a handheld power tool, the fastening interface having a locking unit which, (i) in a locked state, locks the tool attachment for operation on the handheld power tool, and, (ii) in the unlocked state, enables removal of the tool attachment from the handheld power tool; and a first angle position setting unit for setting a predefined angle position of the tool attachment on the handheld power tool, the first angle position setting unit being operable in the locked state and in the unlocked state of the locking unit to enable a change of the predefined angle position.

First claim

What is claimed is:

1. A tool attachment, comprising:
an attachment housing;
a fastening interface situated on the attachment housing for detachable fastening on a handheld power tool, the fastening interface having a locking unit which, (i) in a locked state, locks the tool attachment for operation on the handheld power tool, and (ii) in an unlocked state, enables a removal of the tool attachment from the handheld power tool; and
a first angle position setting unit for setting a predefined angle position of the tool attachment on the handheld power tool, wherein the first angle position setting unit is configured to be operable in the locked state and in the unlocked state of the locking unit to enable a change of the predefined angle position,
wherein the first angle position setting unit is operated by a combined and simultaneous longitudinal and rotational movement of the attachment housing in relation to the fastening interface to change the predefined angle position.

2. The tool attachment as recited in claim 1 , wherein the first angle position setting unit is configured to enable a setting of the predefined angle position with the fastening interface fastened on the handheld power tool.

3. The tool attachment as recited in claim 1 , wherein the fastening interface has a second angle position setting unit configured to enable a setting of the predefined angle position during the fastening of the fastening interface on the handheld power tool.

4. The tool attachment as recited in claim 3 , wherein the first angle position setting unit is configured to enable a change of the predefined angle position, which is set using the second angle position setting unit during the fastening of the fastening interface on the handheld power tool, in the locked state of the locking unit.

5. The tool attachment as recited in claim 3 , wherein the second angle position setting unit has an angle setting unit, which is associated with the fastening interface and is rigidly connected to the attachment housing.

6. The tool attachment as recited in claim 3 , wherein the second angle position setting unit has an angle setting element, which is associated with the fastening interface and has an angle setting toothing.

7. The tool attachment as recited in claim 3 , wherein the second angle position setting unit has a centering aid for the axial centering of the fastening interface on the handheld power tool.

8. The tool attachment as recited in claim 7 , wherein the centering aid is conical in at least in one section.

9. The tool attachment as recited in claim 1 , wherein the first angle position setting unit has a tubular centering sleeve, which is at least sectionally coaxially enclosed by an angle setting element associated with the fastening interface to provide a centering area, a force-loaded form fit being implemented between the centering sleeve and the angle setting element in every settable angle position.

10. The tool attachment as recited in claim 9 , wherein the form fit is implemented by an engagement of a first angle setting toothing which is associated with the centering sleeve, with a second angle setting toothing which is associated with the angle setting element.

11. The tool attachment as recited in claim 10 , wherein the second angle setting toothing is implemented on a circumferential shoulder, which is oriented radially inward, of the angle setting element and faces away from the fastening interface.

12. The tool attachment as recited in claim 9 , wherein the angle setting element is connected with the aid of a sleeve-type connecting element to the attachment housing.

13. The tool attachment as recited in claim 12 , wherein a compression spring is situated between a flange, which is oriented radially inward, of the connecting element and a locking ring situated on the angle setting element.

14. The tool attachment as recited in claim 1 , wherein the first angle position setting unit includes a first angle setting toothing and a second angle setting toothing, a force-loaded form fit being implemented between the first angle setting toothing and the second angle setting toothing in every settable angle position.

15. The tool attachment as recited in claim 14 , wherein the first angle setting toothing is implemented on a centering sleeve associated with the drive unit.

16. The tool attachment as recited in claim 15 , wherein the second angle setting toothing is situated on a main body of the tool attachment.

17. The tool attachment as recited in claim 16 , wherein the angle setting toothing of the second angle position setting unit is situated on the main body.

18. The tool attachment as recited in claim 1 , wherein the locking unit has an at least sectionally tubular locking body and an actuating ring situated on the locking body, and wherein the actuating ring is operable to lock the locking body on the handheld power tool.

19. The tool attachment as recited in claim 18 , wherein the locking body has at least two locking elements which are implemented in the manner of bayonets to form a bayonet joint.

20. The tool attachment as recited in claim 1 , wherein the first angle position setting unit includes a first angle setting element and a second angle setting element, a force-loaded form fit being implemented between the first angle setting element and the second angle setting element in every settable angle position.

21. A tool attachment, comprising:
an attachment housing;
a fastening interface situated on the attachment housing for detachable fastening on a handheld power tool, the fastening interface having a locking unit which, (i) in a locked state, locks the tool attachment for operation on the handheld power tool, and (ii) in an unlocked state, enables a removal of the tool attachment from the handheld power tool;
a drive unit situated in the attachment housing for driving a tool receptacle of the tool attachment; and
a first angle position setting unit for setting a predefined angle position of the tool attachment on the handheld power tool, wherein the first angle position setting unit is configured to be operable to enable a change of the predefined angle position of the drive unit in relation to the fastening interface,
wherein the first angle position setting unit is operated by a combined and simultaneous longitudinal and rotational movement of the attachment housing in relation to the fastening interface to change the predefined angle position.

22. A tool system, comprising:
a handheld power tool; and
a tool attachment including:
an attachment housing;
a fastening interface situated on the attachment housing for detachable fastening on a handheld power tool, the fastening interface having a locking unit which, (i) in a locked state, locks the tool attachment for operation on the handheld power tool, and (ii) in an unlocked state, enables a removal of the tool attachment from the handheld power tool; and
a first angle position setting unit for setting a predefined angle position of the tool attachment on the handheld power tool, wherein the first angle position setting unit is configured to be operable in the locked state and in the unlocked state of the locking unit to enable a change of the predefined angle position,
wherein the first angle position setting unit is operated by a combined and simultaneous longitudinal and rotational movement of the attachment housing in relation to the fastening interface to change the predefined angle position.

Assignees

• Bosch Gmbh Robert

Inventors

• Saur Dietmar
• Braun Marco
• Necker Andreas

Classifications

• B25F3/00

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

• B23Q5/045 Primary

  Angle drives · 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

• B25B21/00 Primary

  Portable power-driven screw or nut setting or loosening tools; (details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00; {for mounting or dismounting wheels B60B29/006}); Attachments for drilling apparatus serving the same purpose (machines B23P19/06) · CPC title

• B25B21/007

  Attachments for drilling apparatus for screw or nut setting or loosening · CPC title