Suction device

Abstract

A suction device for a hole saw of a hand-held power tool oscillatingly driven about an oscillation axis. A substantially disk-shaped base body has a first side that faces the hand-held power tool and a second side that faces the hole saw. A fastening section detachably fastens the suction device to an oscillatingly driven hand-held power tool; and a connecting piece connects the suction device to a suction apparatus.

Claims

1. A suction device for a hole saw of a hand-held power tool oscillatingly driven about an oscillation axis, the suction device comprising: a substantially disk-shaped base body that has a first side that faces the hand-held power tool and a second side that faces the hole saw; a fastening section to detachably fasten the suction device to an oscillatingly driven hand-held power tool; and a connecting piece to connect the suction device to a suction apparatus, wherein an axial collar is formed on the second side for surrounding an outer circumference of the hole saw, and wherein a ratio between a height of the axial collar and a diameter of the base body is between 10:110 and 30:110.

2. The suction device according to claim 1, wherein the connecting piece is disposed on the first side and opens into an opening on the second side.

3. The suction device according to claim 2, wherein a step is formed on the second side at the opening of the connecting piece.

4. The suction device according to claim 1, wherein the connecting piece has an angle between 20° and 50° with respect to a normal perpendicular to the first side.

5. The suction device according to claim 4, wherein the angle of the connecting piece with respect to the normal perpendicular to the first side is 35°.

6. The suction device according to claim 1, wherein a reinforcing ring, on which radial struts are formed, is disposed on the first side.

7. The suction device according to claim 6, wherein the radial struts are arranged in a star shape and flatten outwards.

8. The suction device according to claim 1, wherein a passage, which has a collar, is formed in the base body.

9. The suction device according to claim 1, wherein the ratio between the height of the axial collar and the diameter of the base body is 15:110.

10. A suction device for a hole saw of a hand-held power tool oscillatingly driven about an oscillation axis, the suction device comprising: a substantially disk-shaped base body that has a first side that faces the hand-held power tool and a second side that faces the hole saw; a fastening section to detachably fasten the suction device to an oscillatingly driven hand-held power tool; and a connecting piece to connect the suction device to a suction apparatus, wherein a passage, which has a collar, is formed in the base body, and wherein a ratio between a height of the collar and a height of the axial collar is between 3:10 and 8:10.

11. The suction device according to claim 10, wherein the ratio between the height of the collar and the height of the axial collar is 5:10.

12. A suction device for a hole saw of a hand-held power tool oscillatingly driven about an oscillation axis, the suction device comprising: a substantially disk-shaped base body that has a first side that faces the hand-held power tool and a second side that faces the hole saw; a fastening section to detachably fasten the suction device to an oscillatingly driven hand-held power tool; and a connecting piece to connect the suction device to a suction apparatus, wherein the fastening section comprises two screw sleeves.

13. The suction device according to claim 12, wherein the two screw sleeves are connected to one another via a web.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus, are not limitive of the present invention, and wherein:

(2) FIG. 1 shows a side view of a suction device that is attached to a hand-held power tool;

(3) FIG. 2 shows a plan view of a second side of the suction device of the invention;

(4) FIG. 3 shows a sectional view along the section III-III from FIG. 2;

(5) FIG. 4 shows a side view of the suction device;

(6) FIG. 5 shows a perspective view of the bottom of the suction device; and

(7) FIG. 6 shows a plan view of the top side of the suction device.

DETAILED DESCRIPTION

(8) FIG. 1 shows a side view of a suction device 1 for a hole saw 2, said device which is attached to a hand-held power tool 4 oscillatingly driven about an oscillation axis 3. Suction device 1 has a substantially round, disk-shaped base body 5, which has a first side 6 that faces hand-held power tool 4 and a second side 7 that faces hole saw 2. Suction device 1 is screwed to hand-held power tool 4 with a fastening section 8 and is thus detachably fastened. In FIG. 1, a connecting piece 9 can also be seen, which is used to connect suction device 1 to a suction apparatus (not shown in the drawing), which is designed, for example, as a vacuum cleaner.

(9) FIG. 2 shows a plan view from below of second side 7 of suction device 1 of the invention. Here, in particular, holes 10 for the screws can be seen with which suction device 1 can be screwed to hand-held power tool 4. In addition, it can be seen from FIG. 2 that connecting piece 9 is disposed on first side 6 and opens into an opening 11 on second side 7.

(10) As can be seen in particular from the sectional view shown in FIG. 3 along the section III-III from FIG. 2, connecting piece 9 is disposed on first side 6 of base body 5 and opens into opening 11 on second side 7. The sectional view of FIG. 3 also shows that an axial collar 12 is formed on second side 7 for surrounding hole saw 2 on the outer circumference. The ratio between the height of axial collar 12 and the diameter of base body 5 is between 1:11 and 3:11 and is particularly preferably 1.5:11, as in the exemplary embodiment shown. A passage 13 through which suction device 1 can be placed on the hand-held power tool is formed in the disk-shaped base body 5. Passage 13 has a collar 14 on second side 7, wherein the ratio between a height of the collar 14 and a height of the axial collar 12 is between 3:10 and 8:10 and is 5:10 in the exemplary embodiment shown.

(11) FIG. 4 shows that connecting piece 9 is inclined at an angle between 20° and 50° with respect to a normal 15 which is perpendicular to first side 6 and is inclined at an angle of 35° in the exemplary embodiment shown.

(12) The perspective view of second side 7 shown in FIG. 5 makes it clear that a step 16 by means of which the air flow is accelerated for a short time is formed at opening 11 of connecting piece 9 on second side 7.

(13) FIG. 6 shows that a reinforcing ring 17 on which radial struts 18 are formed is disposed on first side 6. Radial struts 18 are arranged in a star shape in this case and flatten outward. In addition, radial struts 18 also become increasingly narrower towards the outside. In addition, two screw sleeves 19 can be seen in FIG. 6, which form fastening section 8 and are connected to one another by means of a web 20.

(14) The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are to be included within the scope of the following claims.