GB2283439A - Dust-extracting arrangement and filter bag for a hand-operated machine tool - Google Patents
Dust-extracting arrangement and filter bag for a hand-operated machine tool Download PDFInfo
- Publication number
- GB2283439A GB2283439A GB9421515A GB9421515A GB2283439A GB 2283439 A GB2283439 A GB 2283439A GB 9421515 A GB9421515 A GB 9421515A GB 9421515 A GB9421515 A GB 9421515A GB 2283439 A GB2283439 A GB 2283439A
- Authority
- GB
- United Kingdom
- Prior art keywords
- insufflation
- filter bag
- dust
- sealing
- pipe connection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 25
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 16
- 230000000694 effects Effects 0.000 claims abstract 3
- 239000013013 elastic material Substances 0.000 claims abstract 3
- 239000011324 bead Substances 0.000 claims description 9
- 238000000605 extraction Methods 0.000 claims description 4
- 239000000428 dust Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 206010025482 malaise Diseases 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
- A47L9/14—Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles
- A47L9/1427—Means for mounting or attaching bags or filtering receptacles in suction cleaners; Adapters
- A47L9/1436—Connecting plates, e.g. collars, end closures
- A47L9/1445—Connecting plates, e.g. collars, end closures with closure means
- A47L9/1454—Self-sealing closures, e.g. valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/06—Dust extraction equipment on grinding or polishing machines
- B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filters For Electric Vacuum Cleaners (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Refuse Receptacles (AREA)
- Crushing And Pulverization Processes (AREA)
- Vacuum Packaging (AREA)
Abstract
Dust-extracting arrangement disposed, in particular, on a hand-operated machine tool and having an insufflation pipe connection (30) which carries a filter bag (10) which engages detachably, by means of an insufflation aperture (13), around the insufflation pipe connection (30), wherein the insufflation aperture (13) effects guiding-in through at least one reinforcing panel (11) and a sealing panel (14) made of elastic material and carried by the said reinforcing panel (11), and is so constructed, for dust-tight sealing of the insufflation aperture (13) during disposal of the full filter bag (10), that the sealing panel (14) forms a surface which masks the insufflation aperture (13) and has a self-closing slit (15). <IMAGE>
Description
Dust-extractina arranaement and filter baa for a hand-operated machine tool
Prior art
The starting point of the invention is a dust-extracting arrangement, a filter bag and an insufflation pipe connection of the kind described in Claims 1, 7, 9 and 13.
DE-OS 39 06 371 makes known a dust-extracting arrangement of this kind in which, although the filter bag can be very securely coupled to the insufflation pipe connection on the hand-operated machine tool, the insufflation aperture in the uncoupled, dust-filled filter bags is either open or insufficiently sealable.
Because of this, when the filter bag is uncoupled from the insufflation pipe connection for removal or waste-disposal purposes, fine dust, in particular, passes into the surrounding air and impairs the quality thereof. This leads to high consequential costs, because air quality, particularly in the workplace, has an extremely strong influence on sickness costs. It is therefore becoming more and more important to prevent the formation of dust in the workplace.
Advantages of the invention
By contrast, the dust-extracting arrangement according to the invention, or rather the insufflation pipe connection having the characterizing features of Claims 1 to 7 and the filter bag according to the invention having the characterizing features of Claims 8 and 13, have the advantage that the connection between the hand-operated machine tool and the filter bag is particularly unsusceptible to shocks, secured against loss and dust-tight and that the escape of shavings or dust when the filter bag is removed is almost impossible.
Further advantageous developments of the invention will emerge from the subordinate claims.
Drawings
An example embodiment of the invention is explained in greater detail in the following description, with the aid of the accompanying drawings.
Figure 1 shows an illustration, in perspective, of a filter bag according to the invention, Figure 2 shows a view of the filter bag from the front and Figure 3 shows, in lateral section, an illustration of the filter bag according to the invention, coupled to a dust-extracting pipe connection.
Description of the example embodiment
The filter bag 10 shown in Figure 1 has an elongated shape.
At its front end, it carries a reinforcing panel 11 made of cardboard. In the middle of the reinforcing panel 11, there can be seen the rim 12 of an insufflation aperture 13 which matches the oval cross section of an insufflation pipe connection which is not illustrated here but will be commented on below in connection with Figure 3.
The insufflation aperture 13 is masked by an elastic sealing panel 14. The sealing panel 14 has a central slit 15 which divides the sealing panel 14 into two lips 16, 17 which are closely juxtaposed in a force-locking manner. The slit 15 terminates, at each end, in a small circular cut-out portion 18, 19, which cut-out portions prevent tearing of the ends of the slit 15 when the sealing panel 14 is spread apart by an insufflation pipe connection. On its upper, flat side, the filter bag 10 carries a flap 20 for the introduction of a strip-like holder 37 which will be commented on below in connection with Figure 3, can be attached to the insufflation pipe connection and secures the filter bag 10 against creasing and against hanging down from the insufflation pipe connection.
Figure 2 shows a plan view of the reinforcing panel 11 shown in Figure 1, with the rim 12 of the insufflation aperture 13 and the sealing panel 14 with the lips 16,17 divided by the slit 15. The slit 15 terminates in a small, circular cut-out portion 18, 19 at each end.
Figure 3 shows an illustration, in lateral cross section, of the filter bag 10 shown in Figures 1 and 2, coupled to an insufflation pipe connection 30 on a hand-operated machine tool 31. By means of a fan 32, of which only a part is shown, swarf drawn off by suction from the workpiece is conveyed through an extraction aperture 33 in a grinding disc, which is not described in any greater detail, and on through the duct 34 in the insufflation pipe connection 30 into the filter bag 10. The filter bag 10 is coupled to the insufflation pipe connection 30 in such a way that, with the rim 12 of the insufflation aperture 13, the reinforcing panel 11 encompasses, in a flush-fitting manner, a first bead 35 which is close to the machine and the diameter of which is of a size such that it cannot pass in through the insufflation aperture 13. A second bead 36 of smaller external diameter, which is disposed at an axial distance from the bead 35, passes in through the insufflation aperture 13 and is supported on the lips 16, 17, which engage around it in a sealing manner.
In addition, a strip-like, angled holder 37, which is disposed on the insufflation pipe connection 30, engages in the flap 20 on the filter bag 10. This holder secures the filter bag 10 against creasing and against hanging down from the insufflation pipe connection 30, with axial displaceability of the flap 2.0 in relation to the holder 37.
As a result of this arrangement, the filter bag 10 is secured on the insufflation pipe connection 30 extremely stably, nontiltably and non-rotatably in both a force-locking and a formlocking manner.
If the filter bag 10 is drawn off the insufflation pipe connection 30, the lips 16, 17 close together tightly again to form a slit 15 so that, during the disposal of the full filter bag 10, no dust or shavings can pass out of the insufflation aperture 13.
This ensures improved air quality and freedom from dust in the workplace during the use or disposal of the corresponding dust-extracting arrangement according to the invention.
In the case of an example embodiment of the invention of which no illustration is included, the reinforcing panel is detachably fastened to the filter bag, for example with a
Velcro-type closure and, after the removal of a full filter bag, can be re-used repeatedly on filter bags without a reinforcing panel.
It is understood that the filter bag can also be used for vacuum cleaners or the like.
Claims (17)
1. Dust-extracting arrangement disposed, in particular, on a hand-operated machine tool and having an insufflation pipe connection (30) which carries a filter bag (10) which engages detachably, by means of an insufflation aperture (13), around the insufflation pipe connection (30), wherein the insufflation aperture (13) effects guiding-in through at least one reinforcing panel (11) and a sealing panel (14) made of elastic material and carried by the said reinforcing panel (11), characterized in that the sealing panel (14) forms a surface which masks the insufflation aperture (13) and has a self-closing slit (15).
2. Dust-extracting arrangement according to Claim 1, characterized in that the slit (15) divides the sealing panel (14) into two lips (16, 17) which are pressed against one another.
3. Dust-extracting device according to Claim 1 or 2, characterized in that the slit (15) opens, at both ends and, in particular, close to the rim (12) of the insufflation aperture (13), into a circular cut-out portion (18, 19) in each case.
4. Dust-extracting arrangement according to one of Claims 1 to 3, characterized in that the insufflation aperture (13) is substantially oval, with the slit (15) extending, particularly concentrically, along the greater diameter of the insufflation aperture (13).
5. Dust-extracting arrangement according to one of Claims 1 to 4, characterized in that the reinforcing panel (11) is constructed in such a way, from a piece of cardboard folded a number of times, that a number of layers lying on top of one another are produced, with a central layer carrying the sealing panel (14).
6. Dust-extracting arrangement according to one of Claims 1 to 5, characterized in that a holder (37) extending parallel to the insufflation pipe connection (30) in the form of a, preferably angled, strip is disposed on the insufflation pipe connection (30), while a holding arrangement (20) in the form of a flat pocket or sleeve is attached to the filter bag (10) in such a way that there is a loose, longitudinally displaceable connection between the holder (37) and the holding arrangement (20).
7. Extraction pipe connection for a dust-extracting arrangement according to the pre-characterizing clause of
Claim 1, characterized in that it carries two sealing beads (35, 36) at an axial distance from one another, of which the sealing bead (35) which is close to the machine has a greater outer diameter than the sealing bead (36) which is remote from the machine.
8. Extraction pipe connection according to Claim 7, characterized in that the sealing bead (35) which is close to the machine is supported on the rim of the insufflation aperture (13) without passing through the sealing panel (14) and that the smaller sealing bead (36), which is remote from the machine, spreads apart the sealing panel (14) as it passes through it and the sealing panel (14) engages around the said bead in a sealing manner.
9. Filter bag for a dust-extracting arrangement, particularly on a hand-operated machine tool, having an insufflation pipe connection (30) which carries a filter bag (10) which engages detachably, by means of an insufflation aperture (13), around the insufflation pipe connection (30), wherein the insufflation aperture (13) effects guiding-in through at least one reinforcing panel (11) and a sealing panel (14) made of elastic material and carried by the said reinforcing panel, characterized in that the sealing panel (14) forms a surface which masks the insufflation aperture (13) and has a self-closing slit (15).
10. Filter bag according to Claim 9, characterized in that the slit (15) divides the sealing panel (14) into two lips (16, 17) which are closely juxtaposed in a force-locking manner.
11. Filter bag according to Claim 9 or 10, characterized in that the slit (15) opens, at both ends and, in particular, close to the rim of the insufflation aperture (13), into a circular cut-out portion (18, 19) in each case.
12. Filter bag according to Claim 11, characterized in that the insufflation aperture (13) is substantially oval.
13. Reinforcing panel (11) for a filter bag (10) according to one of the preceding claims, characterized in that the reinforcing panel (11) is detachably fastened to the filter bag (10), in particular with a Velcro-type closure.
14. A dust-extracting arrangement substantially as herein described with reference to the accompanying drawing.
15. An extraction pipe connection substantially as herein described with reference to the accompanying drawing.
16. A filter bag substantially as herein described with reference to the accompanying drawing.
17. A reinforcing panel for a filter bag substantially as herein described with reference to the accompanying drawing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9316668U DE9316668U1 (en) | 1993-10-30 | 1993-10-30 | Filter bag |
| DE9316626U DE9316626U1 (en) | 1993-10-30 | 1993-10-30 | Dust extraction device for a hand machine tool |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9421515D0 GB9421515D0 (en) | 1994-12-07 |
| GB2283439A true GB2283439A (en) | 1995-05-10 |
| GB2283439B GB2283439B (en) | 1997-09-03 |
Family
ID=25961379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9421515A Expired - Lifetime GB2283439B (en) | 1993-10-30 | 1994-10-25 | Dust-extracting arrangement and filter bag for a hand-operated machine tool |
Country Status (3)
| Country | Link |
|---|---|
| GB (1) | GB2283439B (en) |
| IT (1) | IT1271029B (en) |
| SE (1) | SE508685C2 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1031326A (en) * | 1964-03-06 | 1966-06-02 | Electrolux Corp | End closure disposable dust bag |
| GB1221323A (en) * | 1967-03-28 | 1971-02-03 | Cons Foods Corp | End closure for a disposable vacuum cleaner dust bag |
| GB1221322A (en) * | 1967-02-15 | 1971-02-03 | Cons Foods Corp | Self-closing dust bag for a vacuum cleaner |
| GB1262055A (en) * | 1969-09-05 | 1972-02-02 | Electrolux Ltd | Self-sealing dust bag |
| GB1450955A (en) * | 1973-10-16 | 1976-09-29 | Cons Foods Corp | Disposable vacuum cleaner dust bag |
-
1994
- 1994-10-21 IT ITMI942162A patent/IT1271029B/en active IP Right Grant
- 1994-10-25 GB GB9421515A patent/GB2283439B/en not_active Expired - Lifetime
- 1994-10-28 SE SE9403708A patent/SE508685C2/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1031326A (en) * | 1964-03-06 | 1966-06-02 | Electrolux Corp | End closure disposable dust bag |
| GB1221322A (en) * | 1967-02-15 | 1971-02-03 | Cons Foods Corp | Self-closing dust bag for a vacuum cleaner |
| GB1221323A (en) * | 1967-03-28 | 1971-02-03 | Cons Foods Corp | End closure for a disposable vacuum cleaner dust bag |
| GB1262055A (en) * | 1969-09-05 | 1972-02-02 | Electrolux Ltd | Self-sealing dust bag |
| GB1450955A (en) * | 1973-10-16 | 1976-09-29 | Cons Foods Corp | Disposable vacuum cleaner dust bag |
Also Published As
| Publication number | Publication date |
|---|---|
| SE9403708D0 (en) | 1994-10-28 |
| SE508685C2 (en) | 1998-10-26 |
| IT1271029B (en) | 1997-05-26 |
| ITMI942162A1 (en) | 1996-04-21 |
| ITMI942162A0 (en) | 1994-10-21 |
| SE9403708L (en) | |
| GB9421515D0 (en) | 1994-12-07 |
| GB2283439B (en) | 1997-09-03 |
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