IP Library › Granted Patent US 8,360,439
Granted Patent B2
US 8,360,439 · App. 12/513,306 · Granted Jan 29, 2013

Adapter for a hand-held power tool

Inventors: Daniel Hirt (Kirchentellinsfurt, DE); Csaba Kiss (Arnot, HU)
Assignee: Robert Bosch GmbH
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Quick Facts
Patent No.
US 8,360,439
App. No.
12/513,306
Granted
Jan 29, 2013
Kind
B2
Abstract

The invention describes an adapter for a handheld machine tool, comprising a locking unit ( 40 ), which can be releasably and fixedly attached to a housing ( 10 ) of a handheld machine tool, and a rotatably mounted shaft ( 32 ), which can be connected in a rotationally fixed manner to a drive shaft ( 20 ) of the handheld machine tool, wherein the locking unit ( 40 ) has at least one means ( 42, 62 ) for a latching connection.

Claims (32)

1. An adapter for a hand-held power tool, comprising

a locking unit ( 40 ) which is releasably and fixedly attachable to a housing ( 10 ) of a hand-held power tool, and

a rotatably supported shaft ( 32 ) which is non-rotatably connectable to a drive shaft ( 20 ) of the hand-held power tool,

wherein the locking unit ( 40 ) includes at least one spring element ( 42 ) in a form of an annular spring for establishing a detent connection, and

wherein a first end ( 45 ) of the annular spring ( 42 ) is fixedly arranged in the locking unit ( 40 ) and a second end ( 47 ) of the annular spring is arranged to be movable in the circumferential direction relative to the locking unit ( 40 ).

2. The adapter as recited in claim 1 , wherein the annular spring ( 42 ) is designed such that it latches into place automatically.

3. The adapter as recited in claim 1 , wherein the annular spring ( 42 ) is actuated manually in order to release the detent connection.

4. The adapter as recited in claim 1 , wherein the annular spring ( 42 ) secures the adapter, at least axially, to a housing ( 10 ) of a hand-held power tool.

5. The adapter as recited in claim 1 , wherein the annular spring ( 42 ) is engageable in an annular groove ( 12 ) in the housing ( 10 ) when the adapter ( 30 ) is installed on a housing ( 10 ) of a hand-held power tool.

6. The adapter as recited in claim 1 wherein the second end ( 47 ) of the annular spring ( 42 ) is arranged in a rotatably supported release ring ( 46 ) of the locking unit ( 40 ).

7. The adapter as recited in claim 1 , wherein the annular spring ( 42 ) is a leaf spring ( 62 ).

8. The adapter as recited in claim 7 , wherein a first end ( 65 ) of the leaf spring ( 62 ) is fixedly arranged in the locking unit ( 40 ), and a second end ( 67 ) of the leaf spring ( 62 ) is arranged to be movable in the radial direction relative to the locking unit ( 40 ).

9. The adapter as recited in claim 7 , wherein the locking unit ( 40 ) includes a rotatably supported locking ring ( 66 ) which, when in a locking position, prevents the second end ( 67 ) of the leaf spring ( 62 ) from moving radially.

10. The adapter as recited in claim 1 , wherein the locking unit ( 40 ) includes engagement means ( 43 ) for the non-rotatable engagement with a housing ( 10 ) of a hand-held power tool.

11. The adapter as recited in claim 10 , wherein the engagement means ( 43 ) is designed as a toothed ring.

12. A hand-held power tool that includes an adapter as recited in claim 1 .

13. The adapter as recited in claim 1 , wherein the adapter is configured as an angular adapter, an output shaft of which is at an angle to the drive shaft ( 20 ) of the hand-held power tool and wherein the input shaft is connected to the output shaft via angular gearing.

14. The adapter as recited in claim 1 , wherein the adapter is an eccentric adapter, an output shaft of which is arranged offset from and parallel to the drive shaft ( 20 ) of the hand-held power tool.

15. The adapter as recited in claim 1 , wherein the adapter is torque adapted for setting maximum torque.

16. An adapter for a hand-held power tool, comprising

a locking unit ( 40 ) which is releasably and fixedly attachable to a housing ( 10 ) of a hand-held power tool, and

a rotatably supported shaft ( 32 ) which is non-rotatably connectable to a drive shaft ( 20 ) of the hand-held power tool,

wherein the locking unit ( 40 ) comprises

a leaf spring ( 62 ) for establishing a detent connection, which leaf spring ( 62 ) includes a first end ( 65 ) fixedly arranged in the locking unit ( 40 ) and a second end ( 67 ) arranged to be movable in the radial direction relative to the locking unit ( 40 ), and

a rotatably supported locking ring ( 66 ) which, when in a locking position, prevents the second end ( 67 ) of the leaf spring ( 62 ) from moving radially.

17. A hand-held power tool that includes an adapter as recited in claim 16 .

18. The adapter as recited in claim 16 , wherein the leaf spring ( 62 ) latches into place automatically.

19. The adapter as recited in claim 16 , wherein the leaf spring ( 62 ) is actuated manually in order to release the detent connection.

20. The adapter as recited in claim 16 , wherein the leaf spring ( 62 ) secures the adapter, at least axially, to a housing ( 10 ) of a hand-held power tool.

21. The adapter as recited in claim 16 , wherein the leaf spring ( 62 ) is engageable in an annular groove ( 12 ) in the housing ( 10 ) when the adapter ( 30 ) is installed on a housing ( 10 ) of a hand-held power tool.

22. The adapter as recited in claim 16 , wherein the locking unit ( 40 ) includes engagement means ( 43 ) for the non-rotatable engagement with a housing ( 10 ) of a hand-held power tool.

23. The adapter as recited in claim 22 , wherein the engagement means ( 43 ) is designed as a toothed ring.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 1, 2009
From: HIRT, DANIEL; KISS, CSABA
To: ROBERT BOSCH GMBH
Reel/Frame 022627/0898 →
Priority Claims (2)
DE 10 2006 057 927 · Dec 8, 2006 · national
DE 10 2007 006 329 · Feb 8, 2007 · national
Continuity (1)
Related Publication 20100108338A1 · May 6, 2010