Dust Hood Extension Device and System Comprising A Dust Hood Extension Device of This Kind and An Adapter

Abstract

A dust hood extension device for use with a dust hood of a grinder includes a supporting device where the supporting device is configured to surround the dust hood and an opening defined by the dust hood extension device. The opening is arranged eccentrically with respect to a central axis of a drive shaft of the grinder in a fastened condition of the dust hood extension device on the dust hood of the grinder.

Claims

1.-10. (canceled)

11. A dust hood extension device for use with a dust hood of a grinder, wherein the grinder comprises a drive shaft for driving a grinding means and wherein the grinding means is rotatable in a rotationally symmetrical manner around a central axis of the drive shaft during operation, comprising: a supporting device, wherein the supporting device is configured to surround the dust hood; and an opening defined by the dust hood extension device, wherein the opening is arranged eccentrically with respect to the central axis of the drive shaft in a fastened condition of the dust hood extension device on the dust hood of the grinder.

12. The dust hood extension device as claimed in claim 11 further comprising a clip and wherein the clip is fastenable on the dust hood without use of a tool.

13. The dust hood extension device as claimed in claim 11, wherein the supporting device is rotatably mountable on the dust hood.

14. The dust hood extension device as claimed in claim 11, wherein the supporting device is a thermoplastic.

15. A system, comprising: the dust hood extension device as claimed in claim 11; and an adapter coupled to the dust hood extension device, wherein the adapter has at least one surface for resting on a surface to be machined and an opening, wherein a size of the opening is matchable to a configuration of a chamfer to be ground.

16. The system as claimed in claim 15, wherein the adapter is a wearing part.

17. The system as claimed in claim 15, wherein the adapter has a clip and wherein the clip is fastenable on a dust hood without use of a tool.

18. The system as claimed in claim 15, wherein the system is vertically adjustable with respect to a grinding means of a grinder in a fastened condition of the system on the grinder.

19. The system as claimed in claim 15, wherein the size of the opening is in a range of from 5 to 200 mm.

20. The system as claimed in claim 15, wherein the at least one surface of the adapter comprises a first contact surface and a second contact surface.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG. 1 shows a view of a preferred embodiment of the invention, in particular of a dust hood extension device;

[0031] FIG. 2 shows a view of a preferred embodiment of the invention, in particular of a dust hood extension device;

[0032] FIG. 3 shows a view of a preferred embodiment of the invention, in particular of a dust hood extension device, wherein the adapters illustrated have openings of different sizes; and

[0033] FIG. 4 shows a view of a preferred embodiment of the invention, in particular of a basic support and of an adapter of a dust hood extension device.

DETAILED DESCRIPTION OF THE DRAWINGS

[0034] FIG. 1 shows a preferred configuration of a provided dust hood extension device (4). FIG. 1 illustrates, in particular, the basic support (1) and the adapter (2) of a dust hood extension device (4) as well as the opening (3) of the supporting device (1) or the opening (13) of the adapter (2). FIG. 1 also illustrates the grinder (10) and the central axis (11) of the drive shaft. It can clearly be seen that the opening (3) of the basic support (1) is arranged eccentrically in relation to the rotation axis (11) of the grinder (10), with the result that, in particular, the opening (3 or 13) is arranged above the grinding means (5) or above a segment of the grinding means (5), which is preferably of annular design.

[0035] Arranged around the opening (3 or 13) are the bearing surfaces (6, 7) of the adapter (2), which are suitable for alignment of the dust hood extension device (4) in relation to the front side and the upper side of a material block (16) to be machined. The adapter (2) can be fastened on the dust hood (not illustrated) by means of a first clip (9), while the basic support (1) or dust hood extension device (4) can be fastened on the dust hood by means of a second clip (8). The first clip (9) is preferably referred to as an adapter clip, while the second clip (8) is referred to as a dust hood extension device clip. The clip devices (8, 9) are preferably arranged above the second bearing surface (6).

[0036] The first bearing surface (7) is preferably designed to align the dust hood extension device (4) in relation to a substantially vertically extending front side of the material block (16) to be machined. For this purpose, the dust hood extension device (4) can be placed by means of the first bearing surface (7) against the front side of the material block (16), e.g., a staircase step. Particularly tilt- and wobble-free working is thereby possible, with the result that particularly smooth work with the grinder (10) and the production of particularly uniform chamfers (15) is made possible through the provision of the bearing surfaces (6, 7). The second bearing surface (6) is preferably designed to align the dust hood extension device (4) in relation to a substantially horizontally extending upper side of the material block (16) to be machined. For this purpose, the dust hood extension device (4) can be placed by means of the second bearing surface (6) against the upper side of the material block (16), e.g., a staircase step.

[0037] The placement or alignment of the dust hood extension device (4) by means of the bearing surfaces (6, 7) on the side faces of a material block (16) is illustrated particularly well in FIG. 2. In particular, FIG. 2 also illustrates the central axis (11) of the drive shaft of the grinder (10), wherein this central axis (11) is preferably also referred to as the rotation axis. Moreover, it is possible to see in FIG. 2 how the grinding means (5) or a segment of the grinding means (5) rests on the chamfer (15) to be produced. The arrangement of the segment of the grinding means (5) preferably corresponds to the position of the openings (3, 13) of the basic support (1) or adapter (2) of the dust hood extension device (4).

[0038] FIG. 3 shows a preferred embodiment of the dust hood extension device (4), wherein, in particular, dust hood extension devices (4) with different adapters (2) are depicted. In particular, FIG. 3 shows adapters (2) which have openings (13) of different sizes, wherein the openings (13) are preferably at least partially delimited by the bearing surfaces (6, 7) of the adapter (2). In contrast, the opening (3) of the basic support (1) remains substantially unchanged. The openings (13) of different sizes in the adapter (2) enable the dust hood extension device (4) to be adapted to different sizes of chamfer (15) to be produced. This is made easier by the fact that the adapter (2) is preferably designed as a wearing or interchangeable part, thus making it possible to use different adapters (2) in combination with the provided dust hood extension device (4) when grinding chamfers (15) of different widths.

[0039] FIG. 4 shows a possible embodiment of an adapter (2) and of a basic support (1) in a preferred embodiment of a dust hood extension device (4) relative to one another. In particular, FIG. 5 illustrates how the adapter (2) can be mounted on the basic support (1). According to the invention, it is particularly preferred that the adapter (2) is hooked into the basic support (1) in a rear region and is clipped into the basic support (1) using a clip mechanism in a front region.

LIST OF REFERENCE CHARACTERS

[0040] 1 Basic support/supporting device [0041] 2 Adapter [0042] 3 Opening [0043] 4 Dust hood extension device [0044] 5 Grinding means or grinding segment of a grinding means [0045] 6 Second bearing surface [0046] 7 First bearing surface [0047] 8 Clip (dust hood extension device) [0048] 9 Clip (adapter) [0049] 10 Grinder [0050] 11 Rotation axis or central axis of the drive shaft [0051] 13 Opening of the adapter [0052] 15 Chamfer or chamfer surface [0053] 16 Material to be machined or material block