Handle device for a hand-held power tool

Patent metadata

Field	Value
Publication number	US-12090622-B2
Application number	US-202117915184-A
Country	US
Kind code	B2
Filing date	May 27, 2021
Priority date	Jun 5, 2020
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

A handle device for releasable fastening on a hand-held power tool ( 10 ), wherein the handle device has a clamping ring ( 41 ) with a clamping mount ( 42 ) for receiving a fastening portion ( 20 ) of the hand-held power tool ( 10 ) and also has a handle ( 60 ), which projects from the clamping ring ( 41 ), wherein a clamping-actuation grip ( 78 ), which can be activated manually by the operator (BE), can be used to adjust the clamping mount ( 42 ) between a clamping position (K), and a release position (L), and wherein the handle device has an axial-form-fitting body ( 80 ), which is mounted in a movable manner in relation to the clamping mount ( 42 ) and has an axial-form-fitting contour ( 81 ) for engagement in a mating axial-form-fitting contour ( 25 ) of the fastening portion of the hand-held power tool. Provision is made for the handle device to have a form-fitting-actuation grip ( 90 ), which is separate from the clamping-actuation grip ( 78 ), can be activated manually by the operator (BE), independently of the clamping-actuation grip, and is intended for adjusting the axial-form-fitting body ( 80 ) between an engagement position, and a freeing position.

First claim

The invention claimed is:

1. A handle device for releasable fastening on a hand-held power tool, wherein the handle device has a clamping ring with a clamping mount for receiving a fastening portion, of the hand-held power tool and a handle which projects from the clamping ring and which is provided and designed for gripping and/or grasping by an operator, wherein, using a clamping-actuation grip which can be manually actuated by the operator, the clamping mount can be adjusted between a clamping position clamping the fastening portion of the hand-held power tool, in which clamping position an inner circumferential surface of the clamping mount lies in the clamping seat against the fastening portion of the hand-held power tool, and a release position which releases the fastening portion of the hand-held power tool, in which release position the fastening portion of the hand-held power tool can be inserted into the clamping mount along an insertion axis, and wherein the handle device has an axial-form-fitting body mounted in a movable manner in relation to the clamping mount and having an axial-form-fitting contour for engagement in a mating axial-form-fitting contour of the fastening portion of the hand held power tool and wherein said handle device has a form-fitting actuation grip, which is separate from the clamping-actuation grip and which can be manually actuated by the operator independently of the clamping-actuation grip, for adjusting the axial-form-fitting body between an engagement position, in which the axial-form-fitting contour is engaged with the mating axial-form-fitting contour and locks the handle device with respect to the insertion axis in a form-fitting manner on the fastening portion of the hand-held power tool, and a release position (F), in which the axial-form-fitting contour is disengaged from the mating axial-form-fitting contour, and the hand-held power tool and the holding device can be displaced relative to one another with respect to the insertion axis.

2. The handle device according to claim 1 , wherein the axial-form-fitting contour can be adjusted between the engagement position and the release position when the clamping mount, is in the release position.

3. The handle device according to claim 1 wherein, in the engagement position, the axial-form-fitting contour projects in front of the inner circumferential surface of the clamping mount when the clamping mount is in the release position.

4. The handle device according to claim 1 , wherein, in the engagement position, the axial-form-fitting contour fixes the handle device with respect to the insertion axis in an axially nondisplaceable and/or form-fitting manner.

5. The handle device according to claim 1 , wherein the axial-form-fitting body and the form-fitting actuation grip are firmly or integrally connected to one another or movement-coupled by a driver device.

6. The handle device according to claim 1 , wherein the axial-form-fitting body is loaded by a spring arrangement into the engagement position.

7. The handle device according to claim 1 , wherein the axial-form-fitting body is mounted so that it can be linearly displaced relative to the clamping ring along a setting axis.

8. The handle device according to claim 7 , wherein, on the handle and/or on the clamping ring, a guide device for linearly guiding the axial-form-fitting body along the setting axis is provided.

9. The handle device according to claim 7 , wherein the setting axis extends tangentially or at a radial spacing tangentially with respect to the inner circumferential surface of the clamping mount.

10. The handle device according to claim 7 , wherein the axial-form-fitting contour has a sloped inclined surface or wedge-shaped surface which is inclined flat and/or inclined at an angle (α) of less than 30° with respect to the setting axis for application and/or wedging with the mating axial-form-fitting contour.

11. The handle device according to claim 7 , wherein the handle has a longitudinal central axis with respect to which the setting axis is parallel or coaxial.

12. The handle device according to claim 7 , wherein the axial-form-fitting body is mounted in an exclusively linearly displaceable and/or non-pivotable or non-rotatable manner relative to the clamping ring.

13. The handle device according to claim 1 , wherein, with respect to the inner circumferential surface of the clamping mount and/or with respect to a center of the clamping mount, the axial-form-fitting contour is mounted so that it can be displaced relatively and/or tangentially between the engagement position and the release position.

14. The handle device according to claim 1 , wherein, for adjusting the clamping mount between the clamping position and the release position, the clamping-actuation grip is mounted so that it can rotate with respect to the clamping ring, and, for adjusting the axial-form-fitting body between the engagement position and the release position, the form-fitting actuation grip is mounted so that it can be displaced with respect to the clamping ring.

15. The handle device according to claim 1 , wherein the clamping-actuation grip is formed by a rod-shaped handle body of the handle, which can be grasped by the operator with the inner surface of his/her hand, or it has such a handle body.

16. The handle device according to claim 1 , wherein the form-fitting actuation grip is arranged between the clamping ring and the clamping-actuation grip.

17. The handle device according to claim 1 , wherein, between a gripping portion of the clamping-actuation grip, provided for grasping the clamping-actuation grip, and a gripping surface of the form-fitting actuation grip, provided for the manual actuation, a spacing is provided which corresponds approximately to the spacing between the anterior phalanx of the thumb of a hand of an adult operator and an index finger of the hand when the thumb is splayed out from the hand, so that the operator can actuate the form-fitting actuation grip while grasping the gripping portion of the clamping-actuation grip with the anterior phalanx of the thumb.

18. The handle device according to claim 1 , wherein the form-fitting actuation grip is designed as a ring body or a sleeve body.

19. The handle device according to claim 1 , wherein the clamping ring can be adjusted by a tensioning anchor between the clamping position and the release position.

20. The handle device according to claim 19 , wherein the axial-form-fitting body is passed through by a tensioning anchor and/or guided on the tensioning anchor.

21. The handle device according to claim 19 wherein the tensioning anchor can be adjusted linearly along a tensioning axis by a handle body of the clamping-actuation grip.

22. The handle device according to claim 21 , wherein a threaded portion of the tensioning anchor is screwed into a screw mount of the handle body, so that, by the rotational actuation of the handle body, the tensioning anchor is linearly adjustable relative to the screw mount, wherein a stop is provided which blocks a complete unscrewing of the tensioning anchor from the screw mount.

23. The handle device according to claim 1 , wherein the handle device comprises at least one rotational-form-fitting contour for engagement in a mating rotational-form-fitting contour on the fastening portion of the hand-held power tool, wherein the mating rotational-form-fitting contour and the rotational-form-fitting contour, when engaged with one another,

Assignees

• Festool Gmbh

Inventors

• Allgaier Benjamin

Classifications

• B25F5/026 Primary

  in the form of an auxiliary handle (B25F5/024 takes precedence) · CPC title