WO2017076457A1 - Suction head - Google Patents
Suction head Download PDFInfo
- Publication number
- WO2017076457A1 WO2017076457A1 PCT/EP2015/075862 EP2015075862W WO2017076457A1 WO 2017076457 A1 WO2017076457 A1 WO 2017076457A1 EP 2015075862 W EP2015075862 W EP 2015075862W WO 2017076457 A1 WO2017076457 A1 WO 2017076457A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- suction
- head according
- channel
- suction head
- hood
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0042—Devices for removing chips
- B23Q11/0046—Devices for removing chips by sucking
Definitions
- the invention relates to a suction head for sucking boring dirt accumulating when a bore is introduced into a substrate, comprising a housing which surrounds a drill receptacle for inserting a drill, a suction channel leading from the drill receptacle to a suction connection for a suction device and a sealing element circumferentially and with the interposition of the sealing element can be applied to the ground suction hood, which is in flow communication with the suction channel.
- suction heads are from the utility model DE
- the suction cups have a housing which has a drill receptacle for inserting a drill and a suction channel leading from the drill receptacle to a suction port.
- a suction device such as a vacuum cleaner can be connected to the suction connection. The suction head can be placed against the ground so that the drill bit holder assumes a position at the desired drilling position.
- the suction head has a suction hood, which is surrounded by a sealing element and is in flow communication with the suction channel and can be applied with the interposition of the sealing element to the substrate.
- a suction flow provided by the suction device, a negative pressure forms within the suction hood, under the action of which the suction head is pressed against the negative pressure. The user therefore does not have to hold the suction head with one hand at the drilling point when introducing the hole, but the suction head adheres under the effect of prevailing in the suction hood vacuum automatically on the ground.
- suction devices which have a filter which is cleaned from time to time with the aid of a cleaning device, whereby the filter is briefly flowed through with air against the flow direction prevailing during the normal suction operation, so that dirt particles detach from the filter. This can lead to the formation of pressure fluctuations in the suction channel, with the risk that the vacuum prevailing in the suction hood will weaken so much that the suction head will detach from the substrate.
- Object of the present invention is therefore to develop a suction head of the type mentioned in such a way that the risk of detachment of the suction head from the ground is reduced due to prevailing in the suction pressure fluctuations.
- the check valve automatically assumes its closed position and thereby interrupts the flow connection to the suction channel.
- the prevailing in the suction hood vacuum is thereby substantially maintained and it is ensured that the suction head does not detach from the ground.
- the negative pressure in the suction increases again, so that the negative pressure in the suction is greater than the negative pressure in the suction hood, the check valve automatically assumes its open position and releases the flow connection to the suction hood again.
- the check valve is designed in an advantageous embodiment of the suction head according to the invention as a diaphragm valve. This allows a particularly compact design.
- the suction channel is in fluid communication with the suction hood via a suction chamber, wherein by means of the check valve, a suction opening is releasable and closable, via which the suction hood is connected to the suction chamber.
- a suction chamber is arranged between the suction hood and the suction, through which passes the flow path from the suction hood to the suction channel.
- the suction chamber is connected on the one hand to the suction channel and on the other hand to the suction hood.
- the flow connection from the suction chamber to the suction hood via a suction port, and at the suction port, the check valve is positioned.
- the provision of the suction chamber has the advantage that Bohrschmutz, which is sucked from the drill receptacle on the suction, not readily to the check valve and can get over this in the suction hood.
- the check valve preferably a diaphragm valve, is advantageously positioned within the suction chamber.
- the provision of the check valve therefore does not result in a reduction in the interior of the suction hood, and the check valve is protected against mechanical damage that could occur when the vacuum hood is applied to the vacuum.
- the suction chamber is connected to the suction channel via a connecting channel.
- the connecting channel By providing the connecting channel, the risk is further reduced that at a momentary weakening of the pressure prevailing in the suction channel Bohrschmutz reaches the check valve and the suction port in the suction hood.
- the connecting channel is arranged offset to the suction opening, because this is in the suction chamber a kind Strö- formed mung labyrinth, which further reduces the risk that unintentionally Bohrschmutz from the suction channel in the suction hood.
- the connecting channel conveniently projects into the suction chamber so that it does not form a flow obstacle within the suction channel.
- the sealing element forms a negative pressure within the suction hood when it is applied to the ground and sucked. It is advantageous if the sealing element is elastically compressible and protrudes in the unloaded state by at least 3 mm over an edge of the suction hood. A supernatant of at least 5 mm has proven to be particularly advantageous. If, under the effect of the suction flow provided by the suction device, a vacuum is formed in the suction hood, the suction hood is pressed against the ground and the sealing element is compressed so that the volume of the interior of the suction hood is reduced.
- the check valve automatically moves from its open position to its closed position.
- the flow connection from the suction channel to the suction hood which initially still exists for a short time, also results in a slight lowering of the negative pressure prevailing inside the suction hood. Due to the elasticity of the sealing element, this has the consequence that it expands, so that the volume of the interior of the suction hood is slightly increased. This increases the pressure prevailing in the suction hood negative pressure and the transition of the check valve in its closed position is accelerated.
- the suction hood has a ventilation opening which can be selectively released and closed by means of a ventilation valve.
- a ventilation valve By opening the ventilation valve, the suction hood can be ventilated to remove the suction head from the substrate after the drilling process has been completed.
- the vent valve is conveniently manually operated.
- the vent valve is designed as a spring-loaded check valve, which automatically assumes its closed position under the action of a return spring and is movable by the user against the action of the return spring in an open position.
- the housing of the suction head has a ventilation chamber which communicates with the surroundings of the housing via at least one inlet opening and with the suction hood via the ventilation opening. From the suction channel, the ventilation chamber is fluidically separated. There is therefore no risk that Bohrschmutz can get from the suction through the vent in the suction hood.
- the ventilation of the suction hood is rather with external air, which can pass through the at least one inlet opening in the ventilation chamber and from this via the ventilation opening in the suction hood, if the venting valve assumes its open position.
- the suction channel has two channel arms, between which the ventilation chamber is arranged.
- a first channel arm may extend along a first side of the breather chamber
- a second channel arm may extend along a second side of the breather chamber, with the two sides conveniently facing one another.
- the ventilation chamber is designed substantially triangular in relation to a plan view.
- a suction device can be connected to the suction connection.
- the suction port is designed in the form of a suction, at the free end of a suction line of the suction device is connected, for example, a suction hose.
- the suction line is in flow communication with a suction unit of the suction device, so that a suction flow is formed under the action of the suction unit in the suction line and the suction channel.
- the suction line connected to the suction nozzle exerts a tilting moment on the suction head due to its weight.
- the sealing element surrounding the suction hood in the circumferential direction has a rectilinear sealing element section aligned transversely to a longitudinal axis of the suction nozzle below the suction nozzle.
- the rectilinear sealing element section forms a support, which counteracts detachment of the suction head from the substrate due to the tilting element exerted by the suction line.
- the housing of the suction head on an upper housing part and a lower housing part, which together form the Bohrerfact and at least one immediately adjacent to the drill holder input section of the suction channel.
- the drill receptacle can be designed in the manner of a passage or channel with a peripheral wall which completely surrounds the drill used in the circumferential direction, but it can also be U-shaped or C-shaped in plan view and form a kind of fork, which the drill in the circumferential direction only incompletely surrounds.
- the upper housing part is preferably mechanically connectable to the lower housing part.
- the upper housing part can be latched or screwed to the lower housing part.
- the lower housing part forms the suction hood and a receptacle for the sealing element.
- the suction hood for example, an inner edge and have an outer edge, which form between them the receptacle for the sealing element.
- the lower housing part is designed in areas plate-shaped. This facilitates the production of the lower housing part and allows a particularly compact design of the suction head.
- the lower housing part and the upper housing part together form the ventilation chamber, via which the suction hood can be ventilated if necessary.
- the ventilation chamber is penetrated by a valve tappet of a ventilation valve.
- the valve stem expediently immersed in the suction hood and carries within the suction hood a valve plate which closes in the closed position of the ventilation valve extending between the ventilation chamber and the suction hood ventilation opening and moves by means of the valve stem against the action of a return spring in an open position spaced from the ventilation opening can be.
- the return spring of the ventilation valve conveniently surrounds the valve stem in the circumferential direction and is supported on the one hand on the lower housing part and on the other hand on the valve lifter or an associated with the valve lifter actuator, such as a printing plate.
- the suction head has an intermediate part arranged between the upper housing part and the lower housing part, which defines at least one longitudinal section of the suction channel.
- the intermediate part may be formed as a hollow body.
- the intermediate part forms two channel arms of the suction channel, between which the ventilation chamber is arranged.
- the flow connection from the suction channel to the suction hood takes place via a suction chamber.
- the intermediate part and the lower housing part define the suction chamber.
- the intermediate part may, for example, a ceiling wall and the lower housing part may form a bottom wall of the suction chamber and side walls of the suction chamber may be formed by the intermediate part and / or the lower housing part.
- the suction connection is, as has already been pointed out, suitably designed as an intake. It is advantageous if the upper housing part forms the suction nozzle.
- Figure 1 A perspective view of an advantageous embodiment of a suction head according to the invention
- Figure 2 is a front view of the suction head of Figure 1;
- Figure 3 is a sectional view of the suction head along the figure 3-3 in Figure 2;
- FIG. 4 shows a sectional view of the suction head according to FIG. 3 during use of the suction head for extracting drilling dirt
- Figure 5 is an enlarged view of detail A of Figure 3;
- FIG. 6 an enlarged view of detail B from FIG. 3;
- Figure 7 is a sectional view taken along line 7-7 in Figure 3;
- Figure 8 a perspective view of the suction head in the manner of an exploded view.
- FIG. 10 an advantageous embodiment of a suction head according to the invention is shown schematically, which is generally occupied by the reference numeral 10.
- the suction head has a housing 12 which has an upper housing part 14 and a lower housing part 16 and an intermediate part 18 arranged between the upper housing part 14 and the lower housing part 16.
- the housing 12 has two straight, obliquely aligned longitudinal sides 20, 22, which are connected to one another via an end face 24 and a rear side 26.
- the rear side 26 is aligned parallel to the front side 24, although the front side 24 has a shorter extent than the rear side 26.
- the housing 12 Adjacent to the front side 24, the housing 12 has a drill receptacle 28, which is formed by the upper housing part 14 and the lower housing part 16 and in the illustrated embodiment forms a circular passage in plan view.
- a drill 30 shown in FIG. 4 can be inserted into the drill receptacle 28 for introducing a bore into a substrate 32 shown in FIG.
- a lateral opening 34 of the drill receptacle 28 within the housing 12 to a suction 36, which extends from the Bohrerdability 28 through the housing 12 through to a suction port 38, which configured in the illustrated embodiment as a suction nozzle 40 is.
- the suction nozzle 40 is formed by the upper housing part 14.
- the intermediate part 18 connects to the suction nozzle 40, which is designed as a hollow body and a longitudinal portion 41 of the suction channel 36 is formed. This becomes clear in particular from FIG.
- the intermediate part 18 forms a first Channel arm 42 and a second channel arm 44, which extend in the direction of the drill bit holder 28.
- a ventilation chamber 46 is disposed within the housing 12.
- an end portion 48 of the suction channel 36 connects. The end portion 48 extends to the opening 34 of the drill bit holder 28 and is formed jointly by the upper housing part 14 and the lower housing part 16.
- the housing lower part 16 is substantially plate-shaped and forms a bottom wall 50, from which an inner edge 52 and an outer edge 54 arranged at a distance from the inner edge 52 protrude downward in the direction away from the upper housing part 14.
- the inner edge 52 and the outer edge 54 form between them a receptacle 55, in which a sealing element in the form of a sealing ring 56 is arranged, which projects beyond the inner edge 52 and the outer edge 54 to the outside.
- the sealing ring 56 has a projection 58 of at least 3 mm, preferably 5 to 6 mm.
- the sealing ring 56 is elastically compressible.
- the bottom wall 50 forms in combination with the inner edge 52 of a suction hood 60, which can be applied with the interposition of the sealing ring 56 to the substrate 32. This becomes clear from FIG.
- the bottom wall 50 has a suction opening 62, via which the suction hood 60 is in fluid communication with a suction chamber 64.
- the suction chamber 64 is formed by the bottom wall 50 of the lower housing part 16 and by the intermediate part 18.
- the intermediate part 18 has for this purpose a perpendicular to the bottom wall 50 aligned chamber wall 66, which forms a side wall of the suction chamber 64.
- a ceiling wall 68 of the suction chamber 64 is also formed by the intermediate part 18. In the ceiling wall 68 opens a connecting channel 70 which extends within the suction chamber 64 and through which the suction chamber 64 is in fluid communication with the suction channel 36.
- the suction opening 62 can be closed by means of a check valve which, in the illustrated embodiment, is designed as a diaphragm valve 72 and is arranged within the suction chamber 64 on the bottom wall 50.
- a check valve which, in the illustrated embodiment, is designed as a diaphragm valve 72 and is arranged within the suction chamber 64 on the bottom wall 50.
- the diaphragm valve 72 opens in the direction of the suction channel 36, so that the suction hood 60, after it has been applied to the substrate 32, can be acted upon by the suction opening 62, the suction chamber 64, the connecting channel 70 and the suction channel 36 with negative pressure. In this case, the diaphragm valve 72 automatically assumes its open position. If there is a brief weakening of the negative pressure in the suction channel 36, the diaphragm valve 72 automatically moves into its closed position, in which it interrupts the flow connection between the suction chamber 64 and the suction hood 60.
- the ventilation chamber 46 is arranged between the two channel arms 42, 44 of the intermediate part 18.
- the ventilation chamber 46 is bounded in the circumferential direction by an essentially triangular annular wall 74 in plan view. This becomes clear from FIG.
- the annular wall 74 projects upwards from the bottom wall 50 of the housing lower part 16 in the direction of the housing upper part 14.
- the bottom wall 50 has a ventilation opening 76, which allows a flow connection from the ventilation chamber 46 to the suction hood 60 and which can be closed by a ventilation valve 78.
- the ventilation valve 78 has a valve tappet 80, which passes through the ventilation chamber 46 and dips into the suction hood 60 with a lower end section 82.
- a valve plate 84 At the lower end portion 82 of the valve stem 80 carries a valve plate 84, by means of which the vent opening 76 is selectively releasable and closable.
- valve tappet 80 At its end facing away from the valve plate 84, the valve tappet 80 carries an actuating element in the form of a pressure plate 86 which, in the closed position of the aeration valve 78 shown in FIGS. passage opening 88 of the housing upper part 14 dips, so that it is accessible to the user from the outside.
- valve stem 80 is surrounded within the ventilation chamber 46 by a return spring 90, which is supported on the one hand on the integrally connected to the valve stem 80 pressure plate 86 and on the other hand on the bottom wall 50.
- the valve tappet 80 Under the action of the return spring 90, the valve tappet 80 is pushed so far upwards that the valve disk 84 bears against the ventilation opening 76 and closes it.
- the user can press the valve tappet together with the pressure plate 86 downwards in the direction of the bottom wall 50, so that the valve plate 84 occupies a distance from the ventilation opening 76 and thereby releases it. This becomes clear from FIG.
- the upper housing part 14 Laterally adjacent to the passage opening 88, the upper housing part 14 has a plurality of inlet openings 92, via which the ventilation chamber 46 is permanently in fluid communication with the surroundings of the housing 12. Thus, foreign air can flow into the ventilation chamber 46 via the inlet openings 92. If the user actuates the ventilation valve 78, the external air can reach the suction hood 60 via the ventilation opening 76, so that it is ventilated.
- a suction line such as a suction hose 94, as illustrated in Figure 4.
- the suction hose 94 is in flow communication with a suction unit of a suction device known per se, so that a suction flow can be formed by the suction unit, which extends from the drill receptacle 28 via the suction channel 36 to the suction nozzle 40 and then via the suction hose 94 to the suction unit.
- the suction hose 94 exerts a tilting moment on the suction head 10.
- a parallel to the back 26 of the housing 12 extending sealing ring portion 96 is configured rectilinear and perpendicular to a longitudinal axis 98 of the suction nozzle 40 aligned. This becomes clear in particular from FIGS. 4 and 8.
- the suction head 10 can be positioned on the ground 32.
- a suction flow can be formed in the suction channel 36, as explained above. Since the suction channel 36 is in fluid communication with the suction hood 60 via the suction chamber 64 and the suction opening 62, a negative pressure is formed in the suction hood 60. This has the consequence that the suction head 10 is pressed against the substrate 32, wherein the sealing ring 56 is compressed and the interior of the suction hood 60 is sealed.
- the suction head 10 is under the action of the negative pressure prevailing in the suction hood 60, automatically held on the ground 32, so that the user has both hands free for introducing a hole in the ground.
- the diaphragm valve 72 automatically passes from its open position to its closed position and thereby the flow connection between the suction duct 36 and the suction hood 60 interrupts. This ensures that a short-term reduction of the negative pressure in the suction channel 36 does not result in a corresponding reduction of the negative pressure within the suction hood 60, so that the suction head 10 reliably adheres to the substrate 32 even with brief interruptions of the suction flow.
- the provision of the diaphragm valve 72 also ensures that no drilling debris can pass from the suction channel 36 into the suction hood 60 when the suction flow is interrupted.
- the entry of drilling debris into the suction hood 60 is also avoided by the provision of the connecting channel 70 and the suction chamber 64, which form a flow labyrinth in combination of the suction opening 62 and reduce the risk that Bohrschmutz can get into the suction hood 60.
- the user wants to release the suction head from the substrate 32 after a successful drilling operation, he actuates the ventilation valve 78. External air can then flow via the inlet openings 92, the ventilation chamber 46 and the vent opening 76 in the suction hood 60, so that a pressure equalization takes place.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2015/075862 WO2017076457A1 (en) | 2015-11-05 | 2015-11-05 | Suction head |
DE112015007092.3T DE112015007092A5 (en) | 2015-11-05 | 2015-11-05 | suction head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2015/075862 WO2017076457A1 (en) | 2015-11-05 | 2015-11-05 | Suction head |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017076457A1 true WO2017076457A1 (en) | 2017-05-11 |
Family
ID=54476967
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2015/075862 WO2017076457A1 (en) | 2015-11-05 | 2015-11-05 | Suction head |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE112015007092A5 (en) |
WO (1) | WO2017076457A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20200230765A1 (en) * | 2017-10-30 | 2020-07-23 | Robert Bosch Gmbh | Suction Adapter |
US20210252655A1 (en) * | 2018-08-29 | 2021-08-19 | Robert Bosch Gmbh | Dust Suction Device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2005403A (en) * | 1977-10-03 | 1979-04-19 | Hilti Ag | Suction attachment more particularly for use wirh drillingtools |
DE202008008561U1 (en) * | 2008-06-19 | 2008-09-04 | Electrostar Schöttle GmbH & Co. KG | Apparatus for extracting cuttings during drilling by means of a drill in masonry and the like. |
-
2015
- 2015-11-05 DE DE112015007092.3T patent/DE112015007092A5/en active Pending
- 2015-11-05 WO PCT/EP2015/075862 patent/WO2017076457A1/en active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2005403A (en) * | 1977-10-03 | 1979-04-19 | Hilti Ag | Suction attachment more particularly for use wirh drillingtools |
DE202008008561U1 (en) * | 2008-06-19 | 2008-09-04 | Electrostar Schöttle GmbH & Co. KG | Apparatus for extracting cuttings during drilling by means of a drill in masonry and the like. |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20200230765A1 (en) * | 2017-10-30 | 2020-07-23 | Robert Bosch Gmbh | Suction Adapter |
US11660717B2 (en) * | 2017-10-30 | 2023-05-30 | Robert Bosch Gmbh | Suction adapter |
US20210252655A1 (en) * | 2018-08-29 | 2021-08-19 | Robert Bosch Gmbh | Dust Suction Device |
Also Published As
Publication number | Publication date |
---|---|
DE112015007092A5 (en) | 2018-08-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2421630B1 (en) | Method for cleaning two filters of a suction device for cleaning purposes, and suction device for performing the method | |
EP2237711B1 (en) | Portable hard surface vacuum | |
EP2638839B1 (en) | Suction nozzle with squeegees | |
EP2845530B1 (en) | Portable suction device for liquids or liquid/air mixtures | |
EP1851000A2 (en) | Collector for bore cuttings | |
EP0166793A1 (en) | Medical suction device | |
DE19543599B4 (en) | Extraction device for drilling dust resulting from drilling | |
EP2575587A1 (en) | Vacuum cleaner with counter-flow filter cleaning | |
EP2312194B1 (en) | Attachment device | |
DE10200673A1 (en) | Air filter for motor vehicles has water drain outlet with connected water holder with drain valve, having rubber valve closure part | |
DE202013103471U1 (en) | Improved motorized window wiper | |
DE102017121209A1 (en) | Surface cleaning device | |
WO2017076457A1 (en) | Suction head | |
AT390728B (en) | VACUUM CLEANER NOZZLE | |
DE602004007057T2 (en) | A filter shaker for a vacuum cleaner | |
DE3309917A1 (en) | VALVE | |
DE2710448C2 (en) | Pneumatic device for separating the top sheet of a stack of sheets | |
EP1649918B1 (en) | Cleaning device for dust-removing filters | |
DE102012204577B4 (en) | Suction pad assembly for handling workpieces, in particular sheets | |
DE102014119190A1 (en) | Suction nozzle for a motor-driven vacuum cleaner | |
DE102006023747B4 (en) | Pump for cleaning a borehole | |
DE202017107648U1 (en) | Suction holder for vacuum suction | |
DE102006028732B4 (en) | control arrangement | |
EP2123204B1 (en) | Device for regulating the suction air stream of a suction device | |
EP4201282A2 (en) | Surface cleaning device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 15790937 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 112015007092 Country of ref document: DE |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: R225 Ref document number: 112015007092 Country of ref document: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 15790937 Country of ref document: EP Kind code of ref document: A1 |