EP2829210B1 - Suction device with a main filter - Google Patents

Description

The invention relates to a mobile suction device, in particular a construction site or workshop suction device, according to the preamble of claim 1.

Such a mobile suction device is for example in EP 1 491 127 A2 described.

The EP 2 002 773 A2 describes a mobile suction device according to the preamble of independent claim 1. Another mobile suction device is, for example, in EP 2 229 859 A1 described. The suction device is in principle in two parts and has a lower part, in which the dirt collecting space is provided, and an upper part, namely a lid, in which the suction unit and the main filter are arranged. A sealing arrangement is intended to prevent secondary air from flowing past the main filter to the suction unit inlet and thus contaminating the suction unit. In practice, however, it is difficult to ensure a reliable seal of the suction unit inlet of the dirt-laden air.

It is therefore an object of the present invention to provide a suction device in which the suction unit is protected as much as possible from dirt entry and is easy to use.

To solve the problem, a suction device according to the technical teaching of claim 1 is provided.

It is a basic idea that the main filter is not arranged so to speak in the vacuum chamber or dirt collecting space, but in principle between the dirt collecting space and the suction unit inlet. If secondary air flows into this space between the dirt collecting space and the suction unit inlet, which can also be referred to as a sealing gap, it is not dirt laden air from the dirt collecting space, but air from the environment of the suction device, which is generally much cleaner, in any case, contains considerably less dust, particles and other dirt than the suction flow. This secondary air can flow into the suction unit inlet on the one hand. If the seal between on the one hand the dirt collector and on the other hand the suction unit inlet is not perfect, also secondary air, so to speak clean air, can flow past the main filter into the dirt collecting space. Thus flows to the suction flow additional secondary air past the main filter directly into the suction unit inlet or via the dirt collecting space in the suction unit inlet, but this is completely unproblematic, since this air compared to the sucked through the suction inlet air, the suction flow or the laden with particles dirt-air, is relatively clean.

For example, there is a sealing gap between the suction unit inlet and the suction flow outlet, in which the outer periphery of the main filter is arranged.

The main filter may be, for example, a pleated filter, a filter fabric or combinations thereof. In any case, the main filter has a filter surface that retains particles and other debris in the dirt collecting space. On the outer circumference of the main filter, a seal is suitably arranged. Preferably, the seal is integrally and / or materially connected to the filter surface of the main filter, for example glued, welded, molded or the like. Thus, no air can flow between the seal and the filter surface. The gasket is, for example, a polyurethane foam, a rubber material, an elastic plastic material or combinations thereof. The suction device according to the invention has a tensioning device for tensioning the main filter between the suction flow outlet and an inlet housing region of the suction housing on which the suction unit inlet is arranged, wherein the main filter in a clamping position of the tensioning device between the suction flow outlet and the inlet Housing area is braced. The tensioning device can have, for example, movable parts mounted on the dirt collecting container, which can engage with abutment contours on the suction cup housing. But it is also possible that moving parts or clamping elements of the clamping device are arranged on the teat housing and can engage with abutment contours or mating contours on the dirt collector.

The clamping device may comprise, for example, a clamping screw. The clamping screw is advantageous with a hand lever, a knob or the like can be handled easily and without tools. The tensioning device expediently has a tensioning gear which, for example, comprises a lever gear, and / or a wedge or bevel gear or the like. It is expedient if the tensioning device, in particular its tensioning gear, is designed for a linear relative adjustment of the components to be clamped together so that an end face of the main filter seal with the associated sealing seat on the inlet housing portion or the dirt collecting container substantially over its entire surface area is evenly loaded with clamping force. The direction of movement of the linear adjustment thus runs approximately perpendicular to the end face or the sealing seat.

For example, the clamping device is provided for clamping the main filter with an inlet housing portion of the nipple housing, on which the suction unit inlet is arranged. In the clamping position of the clamping device of the main filter is then clamped to the inlet housing portion. Thus, for example, the above-mentioned seal is applied to the inlet housing area.

It is also possible for a seal to be provided on the inlet housing region, which seal cooperates with the main filter, for example, against the filter surface of the main filter. In other words, the main filter need not have its own seal, but may also cooperate with a seal, which is provided so to speak from the inlet housing portion or from the dirt collecting container or is arranged there.

For clamping, various techniques are suitable, some of which are presented below by way of example.

In a variant of the invention, the tensioning device comprises a lever arrangement, for example a toggle lever arrangement, for adjusting the main filter into the tensioning position.

Furthermore, it is provided in another variant of the invention, when the clamping device comprises a roller assembly or roller assembly, with which the main filter can be rolled into the clamping position, so to speak.

A further variant of the invention provides an inclined surface arrangement with at least one clamping bevel for adjusting the main filter into the clamping position. It is also possible that a lever arrangement is provided, which is suitable for actuating the inclined surface arrangement, for example for adjusting the at least one clamping bevel.

Combinations of lever arrangement and / or roller arrangement and / or inclined surface arrangement are also possible.

It is preferred if a latching device for latching the clamping device in the clamping position is present. For example, the latching device can act directly on the main filter. But it is also possible that the latching means an actuating element, with which the clamping device can be actuated, locked in the clamping position.

Furthermore, it is advantageous if a release device for releasing the main filter from the inlet housing portion or the Dirt collecting container is provided. For example, it is possible for the aforesaid gasket to bond somewhat more tightly to the inlet housing portion or to the dirt collection container than desired, for example, to adhere. The release device makes it possible to detach the main filter from the inlet housing portion or the dirt collecting container, for example linearly move away or swing away.

The release device comprises, for example, a release bevel or a lever arrangement acting in the sense of a release, or both.

It is also possible that the clamping device comprises the release device integrally, that is, that the clamping device is suitable on the one hand for adjusting the main filter in the clamping position, on the other hand also for releasing the main filter from the clamping position into a release position.

Preferably, a carrying handle, for example in the form of a bracket, handle or the like, is provided, which is suitable for carrying the dirt collecting container. Thus, the dirt collector can be worn as a whole. The carrying handle may for example be L-shaped or U-shaped. For example, if a bottom of the sucker housing of the suction device integrally includes the dirt collector, it may be carried as a whole on the carrying handle. Also, a dirt collector, which can be removed from the teat housing, can be taken so convenient.

In the suction device is advantageously provided that the dirt collecting space is provided in a dirt collecting container, which is insertable into a container receptacle of the sucker housing and there in a Saugbetriebstellung the dirt collecting a Saugstrom-outlet of the dirt collecting container with a suction unit inlet of the suction unit in flow communication wherein the dirt collecting container for removing dirt collected in the dirt collecting space is removable from the nipple housing, and in that at least one filter holder is provided in the dirt collecting container for holding at least one filter element of the filter assembly.

It is a basic idea that no longer the mobile suction device as a whole to a disposal site, such as a garbage bin, must be brought, but that you have a removable from the nipple housing dirt collector, which greatly simplifies handling. In particular, when the suction device is not moved on rollers on a substrate, it is advantageous if the user does not have to take the suction device as a whole, for example, to the garbage can, but can bring the relatively lightweight and compact dirt collection container to the disposal site.

The dirt collector has an example cubic or box-like shape. Thus, therefore, preferably a bottom wall and extending upward away extending side walls are provided.

The carrying handle preferably forms an actuating member for actuating the clamping device and / or the release device. For example, the carrying handle acts as a lever arm or is pivotally mounted on a lever arm. But it is also possible that the carrying handle comprises at least one inclined surface of an inclined surface arrangement, for example, the aforementioned clamping bevel and / or the release bevel or cooperates with such, for example arranged on container receptacle bevel. Of course, a plurality of bevels may be provided on the carrying handle, for example at least one clamping bevel and / or at least one release bevel.

It is also possible that on the carrying handle a clamping cam is provided for clamping the main filter in the clamping position. Also, a roller or roller or the like may be provided on the carrying handle.

A preferred embodiment of the invention provides that an outer peripheral contour of the dirt collecting container correlates with an inner peripheral contour of the container receptacle of the teat housing in such a way that the dirt collecting container can be inserted in a form-fitting manner into the container receptacle. An inner peripheral contour of the container receptacle is preferably designed for a positive retention of the dirt collecting container. An outer peripheral contour of the dirt collecting container preferably fits completely or at least in sections, preferably substantially, in a form-fitting manner with an inner peripheral contour of the container receptacle.

The container receptacle expediently comprises a plug-in receptacle into which the dirt collecting container can be inserted.

The container receptacle is preferably open at the top. It is expediently provided that the dirt collecting container also holds in the container receptacle without locking means. But it is also possible that the suction device comprises locking means for locking the dirt collecting container in the container receptacle. The locking means include, for example, hooks, bolts, pivot bolt, sliding bolt or the like. It is also possible that the dirt collecting container is held in a clamping seat in the container receptacle.

A filter bag can preferably be arranged in the dirt collecting container, ie the at least one filter holder comprises a filter holder for a filter bag, so to speak a filter bag filter holder. The advantage of this is that the in the filter bag dirt can be disposed of hygienically. But it is also possible, the dust collecting space is configured for a direct recording of dirt, dust and the like other particles, that is, that the dirt accumulates directly in the dirt collecting space of the dirt collector and disposed of there. The filter bag is not necessary.

An embodiment of the invention, which is also advantageous together with the aforementioned filter bag, provides that the at least one filter holder comprises a filter holder for a main filter. The main filter can be, for example, a filter fleece, a pleated filter or the like. The main filter keeps the dirt from getting out of the dirt collection room into the suction unit. The main filter works in combination with a filter bag and without filter bag.

It can be provided that the suction device has a cleaning device for cleaning the main filter, for example by means of countercurrent, shaking, etc.

The filter holder for the main filter is expediently arranged on the suction flow outlet of the dirt collecting container, so that the suction flow outlet can be closed by the main filter. The suction flow thus flows through the main filter in the direction of the suction unit.

The main filter expediently forms essentially a side wall of the dirt collecting container. The suction flow outlet is expediently arranged on a side wall of the container insert and is covered by the main filter. It is particularly preferred if the main filter virtually the entire Side wall surface of the dirt collection container covered, which faces the suction unit.

The nipple housing and / or the dirt collecting container are expediently closed by a lid.

A preferred concept provides that the dirt collecting container is open at its top and can be closed by a lid.

It is possible, for example, for the dirt collecting container to be provided with a cover which is separate from the sucker housing, that is, as it were, a dirt collecting container lid. Thus, the dirt collecting container closed by the dirt collecting container lid can be carried to the place of disposal, for example, a dustbin. This is especially hygienic.

The suction inlet is expediently arranged on the cover.

It is preferred if a connection element or pipe element is arranged at the suction inlet, for example a kind of connection piece. The pipe element opens into the dirt collecting space. Preferably, it is provided that the pipe element is provided and configured, when closing the lid with a arranged in the dirt collecting filter bag, i. the inflow opening to be in fluid communication. Thus, when the lid is closed, the tube element and thus the suction inlet comes into flow communication with an inflow opening of the filter bag.

The sucker housing has, for example, a base housing which can be closed by a cover, so to speak a sucker housing cover. The sucker housing cover expediently covers the suction unit and / or at least one Stowing receptacle for stowing an accessory of the suction device, such as a nozzle or the like from.

An advantageous embodiment of the invention provides that the lid for closing the dirt collecting container is formed by the Saugergehäuse cover.

Between the respective lid, i. the dirt collecting container lid or the lid of the sucker housing, and the dirt collecting container is expediently provided a sealing arrangement, for example comprising O-rings and the like. Particularly preferably, the seal assembly is located on the lid.

When the lid is opened, it releases the interior of the nipple housing, so that the dirt collector can be removed. When the lid of the sucker housing simultaneously forms the lid for the dirt collecting container, both are opened in a train, namely the sucker housing and the dirt collecting container, so that a filter bag or the like arranged approximately in the interior of the dirt collecting container can comfortably and directly access another filter element, the dirt collecting space or the like is.

The dirt collector, for example, has solid walls that limit the dirt collecting space, ie a cavity. For example, the dirt collector is in itself approximately cubic. Furthermore, it is possible for the dirt collecting container to have a lid, wherein the lid can be provided on a container housing of the dirt collecting container, but also on a base housing of the teat housing. The dirt collecting space is expediently in operation of the suction device except for the inflow opening, which forms the Saugstrom inlet or communicates with this, and the Saugstrom-outlet, with the Saugaggregat inlet is fluidly connected, closed. Thus, therefore, the dirt collector preferably forms a kind of capsule for the dirt.

A variant of the invention, for example, in a suction device according to EP 2 229 859 A1 can be realized, provides that the dirt collecting container forms an integral part of the sucker housing. In such a suction device, for example, the main filter extends over the entire top of the dirt collecting space and / or the dirt collecting container, whereupon the lid is then placed with the suction unit. If then laterally air, namely secondary air, at the density level between the main filter and the suction unit having the lid over in the direction of the suction unit inlet flows, this is relatively clean air. It is also possible that the filter does not extend all the way to the outer wall of the sucker housing. For it is also possible, for example, that the atmospheric pressure via a corresponding inflow openings, eg channels and / or a slot, can get into the interior up to the density plane between the main filter and suction unit inlet.

It is preferred if the dirt collecting container for removing dirt accumulated in the dirt collecting space from the sucker housing is removable.

The above explanations with regard to the tensioning device and the main filter release device also apply to a dirt collecting container removable from the dirt collecting chamber, ie, the clamping device is designed to clamp the dirt collecting container in the container receptacle and the releasing device to release the dirt collecting container from the container receptacle. This is particularly easy to implement, though the main filter forms part of the dirt collection container or is held there on a filter holder.

But it is also possible that the main filter is arranged at the suction unit inlet and the dirt collecting container, when it is inserted into the container receptacle, is clamped by the clamping device there, so that ensures a tight fit of the main filter in the sealing gap between suction unit inlet and dirt collection is.

The main filter can indeed, but does not have to be arranged on the dirt collector. For example, the main filter may also be arranged on a suction unit having the housing portion of the sucker housing, which can be brought into fluid communication with the dirt collecting container. For this purpose, the housing section is adjusted, for example, to the dirt collector out or vice versa, the dirt collector to the housing section. For example, the housing portion is a lid similar to a base as in FIG EP 2 229 859 A1 described, is brought.

An embodiment of the invention shown in the drawing provides that the main filter is arranged on the dirt collecting container so that it is removed when removing the dirt collecting container from the nipple housing.

At least one filter holder is expediently provided in the dirt collecting container for holding at least one filter element of the filter arrangement. The filter holder serves, for example, to hold the main filter. But it can also be kept, for example, a filter bag on another element of the filter holder.

It is preferable if the outer circumference of the main filter extends in the manner of a frame around the suction flow outlet forming part of the dirt collecting container.

The sucker housing is advantageously formed on its upper side for stacking a container along a stacking direction. Appropriately, it is provided that the suction device comprises an attachable on the top of the sucker housing in the stacking direction container attachment, the connecting means for establishing a connection with at least one provided on the sucker housing vacuum cleaner connection.

It is a basic idea that at the top of the mobile suction device quasi an essay can be saddled or stacked, which communicates with the nipple housing, that is connecting means for establishing a connection with at least one provided on the nipple housing vacuum cleaner connection. The container attachment can fulfill various tasks, for example, provide storage space for a suction hose, serve for the storage of an electrical connection cable or the like. Also, other functions that are not available in the basic suction device, can be outsourced in the container essay, so to speak. For example, the container attachment can provide a further storage volume for dust, dirt or the like or at least one operating element or display element for operating the basic suction device.

The connecting means may for example comprise one or more passage openings for a line which can be connected or connected to the vacuum cleaner connection, or be formed by at least one passage opening. For example, the line is the suction line, for example, a suction hose to an electrical line or both. It is also possible that a combination line is used, that is, for example, that electrical connection means are also provided on the suction hose itself, for example for operating an electric brush arranged at the free end of the suction line.

The vacuum cleaner connection is expediently arranged on an upper side of the sucker housing, on which the container attachment can be arranged. The vacuum cleaner connection advantageously comprises the suction inlet. The passage opening expediently communicates with the suction inlet of the sucker housing, so that the suction line can be connected or connected to the suction inlet through the passage opening. Thus, therefore, the suction line can extend away from the container attachment in the direction of the work site.

The passage opening allows, for example, a passage through the suction line. The advantage here is that, for example, a plug connection is plugged into the suction line directly into the suction inlet of the sucker housing, for example, fits this form-fitting. Additional interfaces are not available, ie a risk of leakage in the suction line is low. But it is also possible that at the passage opening a connection element for connection to the suction inlet of the sucker housing is provided and the suction line with the connection element for establishing a flow connection to the suction inlet of the sucker housing is connectable, for example by means of a connector. Thus, so to speak, initially the container attachment provides the flow connection to the suction inlet of the suction housing and also a connection to which, in turn, the suction line can be connected.

It is advantageously provided that the connection means comprise an electrical contact arrangement for establishing an electrical connection between the container attachment and a suction device contact arrangement provided on the suction device housing, and the container attachment a control element and / or display element for operating or displaying at least one function of the suction device with the electrical contact arrangement is electrically connected and / or connected to the contact arrangement electrical connection, in particular for an electrical connection cable of a hand-held machine tool having.

The connecting means expediently comprise at least one plug connection for producing an electrical or pneumatic plug connection with the vacuum cleaner housing. It is thus possible, for example, that electrical contacts on the container top communicate with electrical contacts of the sucker housing, so that an electrical connection between the sucker housing and the container top is present. Thus, for example, messages from output means, e.g. a display and / or a speaker, the container top are issued, for example, warnings when the dirt collecting space is full or the like.

It is also possible that, for example, an operating element or display element on the container top communicates via the electrical connections with the nipple housing, for example a control of the suction device.

Furthermore, it is possible that via the pneumatic plug-in connection, a connection between the container attachment and sucker housing is made, so that, for example, a pneumatic connection, for example, a compressed air tool, the container attachment with a pneumatic connection of the Sucker housing, so to speak of the basic suction device, is in flow communication.

A simple embodiment provides that one or more passage openings are present. That was already mentioned. For example, the at least one passage opening comprises a passage opening for an electrical or pneumatic junction box provided on the nipple housing, so that a plug connection element, for example an electrical or pneumatic plug connection element, can be connected to the junction box through the passage opening. Thus, for example, if a plug of a hand machine tool is to be plugged into the suction device itself, i. in a socket of the suction device, this socket is accessible through the passage opening of the container top through. The container top can provide protection for the outlet.

The passage opening may also include a passage opening for at least one operating element or display element for operating the suction device. The control element forms, so to speak, a vacuum cleaner connection in the form of an operating connection. The operating element may, for example, include a display for indicating a function of the suction device, for example level, engine power or the like. Preferably, the operating element comprises a switching element for switching on and off the suction device. The setting of an operating parameter, such as speed, power or the like, may be possible through the passage opening on the control element.

The container attachment preferably provides a receiving cavity for a line of the suction device, for example the suction line, an electrical connection line or both. The advantage This arrangement is therefore that the container attachment is quasi a depot that can be used as needed for this line. For example, the container attachment on a peripheral wall which limits the receiving cavity on the periphery. Thus, if, for example, the suction line, which tends to roll out again, is received in the receiving cavity, it bears against the inner sides of the peripheral wall. The peripheral wall may or may not be closed. It can also have breakthroughs or interruptions.

If the receiving cavity is not needed, the operator simply removes the container attachment from the nipple housing so that the suction device is smaller and easier to transport.

The receiving cavity is preferably designed as an upwardly open and accessible from above receptacle. Thus, for example, a suction hose or an electrical connection line can be inserted from above into the receptacle of the container attachment.

Preferably, the container attachment comprises a carrying handle assembly for supporting the stack comprising the container attachment and the nipple housing. Of course, further, for example, arranged on the underside of the sucker housing container of the stack can be easily transported in this way. For example, a transport box for a tool can be fastened below the sucker housing.

The carrying handle assembly may include, for example, laterally arranged on the container top, in particular pivotable carrying handles. Particularly preferably and illustrated in the drawing, the carrying handle assembly comprises an upwardly projecting carrying handle, for example a kind handle, web or like. Preferably, the carrying handle is located approximately in the center of an upper side of the container attachment.

However, the carrying handle is expediently designed such that it does not protrude in front of a provided for stacking an upper container top support surface of the container attachment. For example, the support surface is formed by a peripheral wall of the container attachment.

It is preferred if the carrying handle forms a winding aid for winding a line, for example the suction line, in particular a suction hose, or an electrical connection line. The suction line can thus, for example, be wound around the carrying handle which, in particular, projects there in the center of the upper side of the container attachment and projects there, for example, in the manner of a dome. When the suction line relaxes again, it expediently pushes in the direction of the peripheral wall, which limits the receiving cavity of the container attachment.

The sucker housing expediently has in the region of the upper side of the sucker housing first coupling means for cooperation with second coupling means of the upper container to a tensile strength in the stacking direction coupling of the sucker housing with the upper container. The coupling means may comprise, for example, hooks, pivot bars, tabs or the like.

The container attachment expediently has second coupling means cooperating with the first coupling means of the nipple housing for coupling with the nipple housing that is tensile in the stacking direction. This is advantageous, for example, in connection with the mentioned carrying handle arrangement of the container attachment.

An advantageous embodiment of the invention provides that the container attachment has on its upper side the second coupling means of the sucker housing and suitable for coupling the attachable to the suction cup container second coupling means. Thus, therefore, the container attachment and the nipple housing have substantially the same coupling means, so that the container can be arranged tensile strength selectively with respect to the stacking direction at the top of the nipple housing and the container attachment. The operator can thus optionally arrange the container or the container top of the nipple housing. The system concept goes so far that, for example, a stack consisting of the nipple housing, the container top and the other container can be formed and the associated coupling means are completely compatible with each other.

An outer peripheral contour of the nipple housing and an outer peripheral contour of the container cap suitably correspond to each other such that the outer peripheral contour of the nipple housing and the container cap are aligned with each other when the container cap is stacked on the nipple housing. The advantage is therefore that a quasi-homogeneous stack can be formed consisting of suction cup and container attachment.

The container attachment expediently comprises at least one lateral opening, for example a groove or a passage opening, for the suction line. For example, therefore, the suction hose, an electrical connection line of the suction device or the like can be inserted into the lateral opening from above or from the side and penetrate it. The side opening may be open at the top or side, but it does not have to. It may have a closed outer circumference, so for example be designed as a kind of bore.

It is preferred if the at least one opening to the top of the container attachment is open, so that the suction line or the electrical connection line or both can be inserted from above into the opening.

The opening is preferably arranged so deep and / or such that the suction line or electrical connection line accommodated in the opening does not project in front of an upper-side support surface of the container attachment provided for stacking an upper container.

For example, the opening is provided on a peripheral wall, the upper side of which represents the support surface. The opening provided there for the suction line or the electrical connection line are expediently so deep that you can insert the suction line or electrical connection line completely into the opening on the peripheral wall. Thus, it is therefore expedient that the suction line or electrical connection line does not hinder the placement of a further container on the container attachment in the stacking direction.

The sucker housing expediently has a base housing and a cover with which an interior of the base housing can be closed. The container attachment is expediently mounted on the lid. It is preferred if the lid of the teat housing with the container top stacked on it can be opened. Thus, the interior of the main body is easily accessible even when the container top is mounted on the lid.

It is preferred if coupling means, for example the aforementioned first coupling means, comprise a locking element for locking the container attachment to the suction cup housing. The locking element locks in a locking the container attachment Position the container attachment over the cover with the basic housing. The locking element thus absorbs the forces that are necessary to hold the container attachment to the base housing.

The container attachment expediently has an additional volume, which is additional to the dirt collecting space in the nipple housing, for receiving dirt, for example a pre-separator for dirt.

In the suction device, it is advantageously provided that the suction inlet is arranged on the upper side of the teat housing intended for stacking the upper container. The nipple housing may form part of a stack. In per se the stacking of another container preventing manner, the suction inlet is arranged on the top of the sucker housing. As a result, the suction inlet is conveniently accessible from above.

The sucker housing has, for example, a base housing and a cover with which an interior of the base housing can be closed. The suction inlet is expediently provided on the lid. But it is also possible that the suction inlet is provided next to the lid or at least on a fixed area of the top of the teat housing. Thus, while the nipple housing may have a lid, it does not have to.

Figur 1

eine perspektivische Schrägansicht eines Sauggeräts gemäß der Erfindung, das in

Figur 2

das Sauggerät im Betrieb zusammen mit einer Hand-Werkzeugmaschine dargestellt ist,

Figur 3

das Sauggerät gemäß Figuren 1, 2 mit geöffnetem Deckel,

Figur 4

einen Schmutzsammelbehälter des Sauggeräts gemäß Figuren 1-3,

Figur 5

den Schmutzsammelbehälter gemäß Figur 4 mit einem Filtersack,

Figur 6

einen Behälteraufsatz des Sauggeräts gemäß der vorstehenden Figuren von perspektivisch schräg oben,

Figur 7

den Behälteraufsatz gemäß Figur 6 von unten,

Figur 8

einen ersten Behälter und

Figur 9

einen zweiten Behälter zur Kopplung mit dem Sauggerät der vorstehenden Figuren,

Figur 10

das Sauggerät gemäß Figuren 1-6 mit geöffnetem Deckel, etwa entsprechend Figur 3, wobei auf dem Deckel der Behälteraufsatz gemäß Figuren 1, 6, 7 angeordnet ist, und

Figur 11

ein nicht erfindungsgemäßes Sauggerät, auf dem die Behälter gemäß Figuren 8, 9 oder das Sauggerät der vorstehenden Figuren anordenbar sind,

Figur 12

einen Stapel mit dem erfindungsgemäßen Sauggerät und weiteren Behältern,

Figur 13

eine perspektivische Schrägansicht des erfindungsgemäßen Sauggeräts mit einem eingesetzten Schmutzsammelbehälter,

Figur 14

das Sauggerät gemäß Figur 13, jedoch ohne Schmutzsammelbehälter,

Figur 15

eine Teil-Schnittansicht des Sauggeräts gemäß Figur 13 etwa entsprechend einer Schnittlinie A-A,

Figur 16

den Schmutzsammelbehälter des Sauggeräts gemäß Figur 13 mit in eine Nichtgebrauchsstellung geschwenktem Tragegriff, der einen Bestandteil einer Hebel-Spanneinrichtung bildet,

Figur 17

den Schmutzsammelbehälter gemäß Figur 16, jedoch mit in eine Tragestellung hoch geschwenktem Tragegriff,

Figur 18

eine Teil-Schnittansicht etwa entsprechend einem Ausschnitt B in Figur 13 mit der Stellung des Tragegriffs entsprechend Figur 16,

Figur 19

die Ansicht gemäß Figur 18, jedoch mit hoch geschwenktem Tragegriff wie in Figur 17,

Figur 20

eine erste Variante des Ausführungsbeispiels gemäß Figuren 13-19, wobei eine Schrägflächen-Spanneinrichtung vorgesehen ist,

Figur 21

den Schmutzsammelbehälter des Sauggeräts gemäß Figur 20,

Figur 22

eine Frontalansicht des Sauggeräts gemäß Figur 20 mit in eine Lösestellung verstellter Schrägflächen-Spanneinrichtung,

Figur 23

die Spanneinrichtung aus Figur 22 in Spannstellung,

Figur 24

eine zweite Variante des Ausführungsbeispiels gemäß Figuren 13-19 mit einer Hebel-Rollen-Spanneinrichtung,

Figur 25

einen Schmutzsammelbehälter des Sauggeräts gemäß Figur 24,

Figur 26

eine Frontalansicht etwa entsprechend der Ansicht gemäß Figur 22 mit in Lösestellung befindlicher Spanneinrichtung, und

Figur 27

die Spanneinrichtung gemäß Figur 26 in Spannstellung.

The suction device according to the invention is a mobile suction device. The suction device may have rollers for driving on a substrate. Appropriately, but no roles are provided. Of course, the suction device could also be a portable suction device which has rollers or has no rollers. The suction device according to the invention is expediently not designed as a self-sufficient, working in the manner of a robot suction device. The suction device can be taken by the operator and forward Place to be used. Furthermore, a suction hose can be connected to the suction device expediently.

FIG. 1

a perspective oblique view of a suction device according to the invention, the in

FIG. 2

the suction device is shown in operation together with a hand-held power tool,

FIG. 3

the suction device according to FIGS. 1, 2 with lid open,

FIG. 4

a dirt collecting container of the suction device according to Figures 1-3 .

FIG. 5

according to the dirt collector FIG. 4 with a filter bag,

FIG. 6

a container attachment of the suction device according to the preceding figures from a perspective obliquely above,

FIG. 7

the container attachment according to FIG. 6 from underneath,

FIG. 8

a first container and

FIG. 9

a second container for coupling with the suction device of the preceding figures,

FIG. 10

the suction device according to Figures 1-6 with the lid open, about the same FIG. 3 , wherein on the lid of the container attachment according to FIGS. 1 . 6, 7 is arranged, and

FIG. 11

a non-inventive suction device on which the container according to FIGS. 8, 9 or the suction device of the preceding figures can be arranged,

FIG. 12

a stack with the suction device according to the invention and other containers,

FIG. 13

a perspective oblique view of the suction device according to the invention with a dirt collecting container used,

FIG. 14

the suction device according to FIG. 13 , but without dirt collector,

FIG. 15

a partial sectional view of the suction device according to FIG. 13 approximately according to a section line AA,

FIG. 16

according to the dirt collecting container of the suction device FIG. 13 with a carrying handle pivoted into a non-use position and forming part of a lever-clamping device,

FIG. 17

according to the dirt collector FIG. 16 , but with carrying handle pivoted up into a carrying position,

FIG. 18

a partial sectional view approximately corresponding to a section B in FIG. 13 with the position of the handle accordingly FIG. 16 .

FIG. 19

the view according to FIG. 18 , but with a swung handle as in FIG. 17 .

FIG. 20

a first variant of the embodiment according to Figures 13-19 wherein an inclined surface tensioning device is provided,

FIG. 21

according to the dirt collecting container of the suction device FIG. 20 .

FIG. 22

a frontal view of the suction device according to FIG. 20 with displaced in a release position inclined surface tensioning device,

FIG. 23

the clamping device off FIG. 22 in tension position,

FIG. 24

a second variant of the embodiment according to Figures 13-19 with a lever-roller clamping device,

FIG. 25

a dirt collecting container of the suction device according to FIG. 24 .

FIG. 26

a frontal view approximately according to the view according to FIG. 22 with in-position clamping device, and

FIG. 27

the tensioning device according to FIG. 26 in tension position.

A mobile suction device 10 comprises a basic device 20 and a container attachment 70 which can be stacked on top of a suction housing 21 of the basic device 20 ( FIGS. 1 and 10 ). In the sucker housing 21, which has a lower part or base housing 22 and a cover 23, a suction unit 24 for generating a suction flow, a dirt collecting space 25 and a filter assembly 26 are provided. The suction flow flows via a suction inlet 27 into the sucker housing 21 and flows through the dirt collecting space 25, wherein the filter assembly 26 contained in the suction flow dirt, for example dust, sawdust or the like other particles in the dirt collecting space 25, so that the suction unit 24 in known way soaks filtered air.

The nipple housing 21 forms a system housing, which with other system components, namely with, for example, the containers 400, 450 in accordance with FIGS. 8 and 9 and with the not according to the invention, on rollers movable on a surface vacuum cleaner 280 according to FIG. 11 can be coupled.

The base housing 22 has a bottom 28 from which side walls 29, 30, 31, 32 extend upwards. Overall, the base housing 22 has a cubic shape. The side wall 29 is a front side wall, the side wall 31 a rear side wall. The side walls 30 and 32 are e.g. Transverse side walls, in particular narrow side walls. The side walls 29-32 define an interior 33.

In the interior 33, a housing portion 120 is provided, in which the suction unit 24 is arranged protected and encapsulated. The housing portion 120 comprises a portion of the bottom 28, the side wall 32 and portions of the side walls 29 and 31. The housing portion 120 further comprises a cover 34 which covers the suction unit 24 on the upper side. By means of the aforesaid walls and a wall 121 opposite the side wall 30, the suction unit 24 is completely enclosed except for a suction unit inlet 61 arranged on the wall 121, through which the suction unit 24 draws in the suction flow, and one which is not visible in the drawing, e.g. arranged on the side wall 31 outflow opening through which the suction unit 24 blows out the suction flow.

On the cover 34 are receptacles 35, 36, in which accessories 37, 38, for example suction nozzles, brushes or the like, of the suction device 10 are accommodated. The interior space 33 can be closed by the cover 23. The lid 23 has an upper top wall 40 from which side walls 41, 42, 43, 44 extend downwardly. The side walls 41-44 are aligned with the Side walls 29-32 of the base housing 22 when the lid 23 closes the inner space 33. For example, on the cover 34 side oblique surfaces 39 are provided, which are overlapped by the side walls 41, 43, 44, when the lid 23 is closed (see FIG. 2 ).

The lid 23 also closes a container receptacle 45, which is located in the interior 33. The container receptacle 45 could serve as a dirt collecting space per se. In a particularly advantageous manner, however, it is provided that the container receptacle 45 serves to receive a dirt collecting container 46, in which a filter holder 47 and a filter holder 48 are provided. The filter holder 47 serves to hold a main filter 49, that is, a filter element.

On the filter holder 48, a filter bag 50 is fastened ( FIG. 5 ), which is suitable for collecting particles or other dirt and is another filter element. The filter bag 50 is disposed in the use state of the suction device 10 in the dirt collecting space 25. The filter bag 50 has, for example, a connection plate 51 with an inflow opening 52. The connection plate 51 can be hooked in a swiveling holder 53 of the filter holder 48 so that, for example, the connection plate 51 can be pivoted out of the dirt collecting space 25 (not shown). The connection plate 51 could also form part of the filter holder 48. Then, the connection plate 51 would be advantageous for example made of plastic, while it is suitably made of cardboard as part of the filter bag 50.

The dirt collector 46 has a bottom 54 from which side walls 55-58 extend upward. At the top, the dirt collecting container 46 has an access opening 59. The dirt collecting space 25 is defined by the side walls 55-58 and Floor 54 limited. Through the access opening 59 of the dirt collecting space 25 is easily accessible.

The filter holder 47 for the main filter 49 extends on the side wall 58. The filter holder 47 includes, for example, a frame in the interior of the main filter 49 is supported. The main filter 49 has a size extent which corresponds approximately to that of the side wall 58, so that virtually the complete side wall 58 is formed by the main filter 49.

The filter holder 47 extends around a suction flow outlet 60 of the dirt collecting container 46. The suction flow outlet 60 is covered by the main filter 49 so to speak, so that only air purified by the main filter 49 flows into the suction unit 24.

If the dirt collector 46 is inserted into the container receptacle 45, see FIG. 10 , the suction flow outlet 60 of the dirt collector 46 and a suction unit inlet 61 of the suction unit 24 communicate with each other and are in fluid communication with each other.

On the side walls 56 and 58 of the dirt collecting container 46 support areas 83 for the connection plate 51 of the filter bag 50 or the filter holder 48 are provided. Thereby, the terminal plate 51 in the in FIG. 5 supported use position supported, so that the inflow opening 52 is ready for flow communication with the suction inlet 27.

The side walls 55-58 and the bottom 54 define an outer peripheral contour 62 of the dirt collecting container 46, which fits into an inner peripheral contour 63 of the teat housing 21, which fits into the container receptacle 45 in a form-fitting manner. The container receptacle 45 and the inner peripheral contour 63 of which are defined by the side wall 30 and the side walls 29 and 31 and the bottom 28 and by the inner wall, not visible in the drawing, the suction unit inlet 61 containing.

The container receptacle 45 is a plug-in receptacle into which the dirt collecting container 46 fits in a form-fitting manner and can be inserted. As a result, the replacement and replacement of the dirt collector 46 is very simple. It only has to be lifted up out of the container receptacle 45. An advantage here is that the operator can easily bring the dirt collecting container 46 to a disposal location and removes there, for example, the filter bag 50 from the dirt collecting container 46. The relatively heavy suction device 10, at least the base unit 20, so do not need to be transported when dirt is due for disposal. The concept is also very hygienic.

But also the opening and closing of the dirt collecting container 46 is simplified, because in fact no separate lid for the dirt collecting container 46 is necessary, but the lid 23 also fulfills the function of a lid for the dirt collecting container 46. Of course, it would be possible to close the dirt collector 46 with a separate lid, so that especially when no filter bag 50 is used, contained in the dirt collecting space 25 dirt does not get into the environment when it is disposed of.

At the bottom of the lid 23 facing the dirt collecting space 25 there is a cover section 64 for covering the dirt collecting container 46. Provided on the outer circumference of the cover section 64 is a seal 65 which, when the lid 23 is closed, lies between the upper end faces of the side walls 41-44 and the lid 23 to come to rest. The seal 65, so a seal assembly, serves for closing and tight covering of the dirt collecting space 25th

The dirt collecting space 25 can be closed by the cover 23 except for its suction flow outlet 60 and the suction inlet 27 forming an inflow opening 132. The suction flow S, which is generated by the suction unit 24, thus flows through the inflow opening 132 into the dirt collecting space 25 and out of the suction flow outlet 60 out of the dirt collecting space 25.

When the lid 23 is closed, a connection member 86 protruding in front of the underside of the lid 23 or in front of the cover portion 64 comes into fluid communication with the filter bag 50. The connector 86 includes, for example, a short protruding tube portion which enters the inlet opening 52 when the lid is closed 23 penetrates. By the support portions 83 ensures that the connection plate 51 does not evade in this so-to-speak automatic production of a plug connection or flow connection.

From an electrostatic point of view, it is advantageous if a grounding contact 67 on the cover 23 comes into contact with a mating contact 66, for example at the top of the cover 34, when the cover 23 is closed.

The suction device 10 may have one or more operating elements 11, for example a switch 12 for switching on and off the suction device 10 and preferably also for adjusting a power of the suction unit 24. The switch 12 is a tap changer and allows, for example, the switching of a first and a second power stage and / or an operating mode of the suction device 10 so that it is switched off or permanently switched on, for example, or automatically switched on and off during operation of the manual power tool 300 ,

The operating elements 11 are arranged, for example, on the side wall 32. There is also a suitably provided electrical junction box 13, in which a connection cable, such as a hand-held machine tool 300, can be inserted (not shown). The hand machine tool 300, for example, a grinder, a saw, or the like, then turns on and off the suction device 10, for example, by controlling the suction device 10 detects a current flow to the hand machine tool 300. The lateral arrangement of the controls 11 on the side wall 32 allows for ergonomic handling of the suction device 10, even if it is in a stack consisting of further, later described components, integrated. That would not be necessary, which will become clear later.

With the manual machine tool 300, workpieces, for example a workpiece plate 301, can be processed. The resulting dust or other particles, such as chips in the case of a saw, are sucked off in a comfortable manner by the suction device 10, for which purpose a suction line 14, for example a suction hose 18, can be connected to the suction inlet 27.

The suction hose 18 has, for example, a connection piece 15, for example a pipe element or the like, which can be inserted into the suction inlet 27 having a plug-in receptacle 68.

The connecting piece 15 has an angular shape, that is, a plug-in portion 16 provided for insertion into the plug-in receptacle 68 and a connecting portion 17 provided for connecting the suction hose 18 are at right angles to one another at right angles to one another. The fitting could also be arcuate.

The angular or arcuate shape is particularly advantageous in the action described in detail below, ie that the suction hose 18 including its connection piece 15 for a in the in FIG. 2 shown operating mode is conveniently used, in which it is inserted directly into the arranged on the top 69 of the sucker housing 21 suction inlet 27, without being on the top 69 is an object or container or the like, on the other hand, even if a in the FIGS. 6 and 7 shown in detail container top 70 is disposed on the top 69.

In itself, it is a hindrance that the suction inlet 27 is arranged at the top 69, because one does not readily follow the example in FIG. 8 illustrated container 400 or the in FIG. 9 illustrated container 450 can be arranged on the upper side 69 of the sucker housing 21 when the suction hose 18 to the suction device 10, at least the base unit 20, is arranged.

The suction device 10 can be used effectively in the form of the basic device 20 ( FIG. 2 ), but also with the extremely convenient and labor-facilitating container attachment 70. The container attachment 70 has a bottom wall 71 and thereof upstanding side walls 72, 73, 74, 75 on. The side walls 72-75, together with the bottom wall 71, bound an interior or a receiving cavity 76 of the container top 70

Overall, the container attachment 70 has a cubic shape.

From the bottom wall 71 is a carrying handle 77 upwards. The carrying handle 77 has the shape of a handle, so that the operator can easily grasp the container top 70. The carrying handle 77 is expediently located approximately in the center of the bottom wall 71, so that a favorable center of gravity is given.

In addition, the carrying handle 77 is expediently used as a winding aid for in FIG. 6 only partially illustrated suction hose 18. This suction hose 18 can thus be wound around the carrying handle 77 around. The suction hose 18 has a tendency to relax, that is, he puts, if he experiences no force from the outside, to the inner sides of the side walls 72-75.

At the upper, free portions of the side walls 72-75 are expediently inwardly projecting wall portions 78, which further contribute to the fact that the suction hose 18 in the receiving cavity 76, the interior of the container attachment 70, is held.

However, the suction hose 18 or the suction line 14 can not only be arranged at least partially in the receiving cavity 76 or the interior of the container attachment 70 when the suction device 10 is not in use, but also during operation.

For this purpose, connection means 80 of the container attachment 70 are seen, which enable a functional coupling of the container attachment 70 with the basic apparatus 20.

Namely, the connecting means 80 comprise, for example, a passage opening 81 on the bottom wall 71. The passage opening 81 is aligned with the suction inlet 27 when the container attachment 70 is attached to the suction housing 21. Thus, the connection piece 15 can pass through the passage opening 81 into the suction inlet 27 be plugged in ( FIG. 1 ). If the suction hose 18 is not needed, it is simply wound up and stowed in the interior of the container attachment 70, that is, the receiving cavity 76. He does not have to be separated from the suction inlet 27.

However, even if an object, for example one of the containers 400 or 450, is arranged on the upper sides of the wall sections 78 defining the support surfaces 79, the suction hose 18 / the suction line 14 can be guided out of the receiving cavity 76 in an ideal manner. On the side wall 75 is a lateral opening 82, whose cross section corresponds to a cross section of the suction line 14 / the suction hose 18, so that the suction line 14 / the suction hose 18, when he / she is received in the opening 82, not in front of the support surfaces 79th protrudes.

The carrying handle 77 is not in front of the support surfaces 79 upwards.

Also, an electrical connection line 19 for the electrical power supply of the suction unit 24, for example, a power line, can be conveniently stowed in the container top 70. The connection line 19 is arranged on the side wall 32 of the sucker housing 21 and has a plug for plugging into a socket (not shown). The connecting lead 19 may pass through a passage 84 into the receiving cavity 76, i. the interior of the container attachment 70, led in and there as well as the suction line 14 are conveniently stowed.

It is advantageously possible to lead the connection line 19 together with the suction line 14 through the lateral opening 82 to the outside.

The passage opening 84 is located in an edge region between the side wall 75 and the bottom wall 71. Below the passage opening 84, a holding receptacle 85 is provided on the side wall 32 of the sucker housing 21 into which the connection line 19 can be inserted. For this purpose, there is a slot at the front of the holding receptacle 85.

It is also possible that the base unit 20 further, no longer accessible by a stacking of the container attachment 70 components on its upper side 69, such as a display element and / or control element 87, for switching and adjusting the suction device 10 and / or Display of operating parameters may be suitable, an electrical junction box 88, for example, for plugging in a power cord. Passage openings 87a and 88a are expediently provided on the container attachment 70 in this case so that the operating element and / or display element 87 and the connection box 88 remain accessible. The passage openings 87a and 88a are expediently arranged on the bottom wall 71. The side walls 72-75 protect the functional components arranged in the passage openings 87a and 88a.

The connecting line 19, the suction inlet 27 and the junction box 88, the operating element or display element 87 form, just like the contact arrangement 89, in each case a vacuum cleaner connection 100.

It is also possible that, for example, a direct electrical connection between the nipple housing 21 and the container attachment 70 is produced. For example, there is a contact arrangement 89a of the connection means 80, e.g. resilient contact surfaces and / or fixed contact surfaces and / or a plug connection 89b may include or be arranged thereon and when stacking the container attachment 70 on the teat housing 21 into electrical connection with a suction device contact arrangement 89, for example, at the top 69 of the teat housing 21st located.

Then it is possible that, for example, an operating element 101 and / or a display element 102 for operating or displaying at least one function of the suction device 10, for example for Switching on or off, to display a level or the like, is electrically connected to the actual base unit 20. However, an electrical connection box, for example a connection 103 for connecting the hand-held machine tool 300 or another hand-held machine tool, can also be supplied with power via the electrical connection established by the contact arrangements 89, 89a.

The bin attachment 70 fits ideally into the bin and workshop system that includes the further containers 450 and 400 and the vacuum cleaner 280. This becomes clear below.

As far as the components of this system contain the same or similar components, these are provided below and in the drawing with the same reference numerals.

In the upper part of the sucker housing 21, the container attachment 70 and the container 400, 450 and the vacuum cleaner 280 first coupling means 90 are provided which cooperate with second coupling means 110 on the respective lower sides of the aforementioned components, except, of course, the vacuum cleaner 280, the vacuum cleaner housing 281 below by means of rollers 283 on a substrate is movable. Thus, the nipple housing 21, the container top 70, the container 400, 450 stacked in a stacking direction H or be stacked on the vacuum cleaner 280 and then there using the coupling means 90, 110 with respect to the stacking direction H tensile strength connected to each other.

The first coupling means 90 include, for example, in the case of the vacuum cleaner 280 on its upper side 284 provided holding receptacles 91, in the holding projections 111 of the second coupling means 110 can be inserted. The retaining seats 91 are at one Receiving 285 provided on the upper side 284 of the vacuum cleaner 280, in which, for example, the nipple housing 21 is used with its bottom portion. The receptacle 285 is bounded laterally, for example by side walls 287, 288, wherein on the side wall 288, the retaining seats 91 are arranged. On the side walls 287, however, are retaining tabs 92 which are engageable with retaining projections 112 of the second coupling means 110. The retaining tabs 92 are, for example, slidingly or pivotally mounted on the side walls 287.

Thus, e.g. the nipple housing 21 are attached to the top of the vacuum cleaner 280, but also the containers 400, 450, not described in detail, which are suitable for transporting, for example, the hand machine tools 300, tools, accessories and the like.

However, the containers 400, 450 and the nipple housing 21 and the container attachment 70 are coupled with each other with somewhat different components of the coupling means 90, 110.

The coupling means 90 comprise on the upper side 69 of the sucker housing 21, ie on the cover 23, provided Hintergreifaufnahmen 93 and support receptacles 94, which serve for engagement with Hintergreiffüßen 113 and for receiving support feet 114 of the other coupling means 110. At the Hintergreifaufnahmen 93 are Hintergreifkonturen 95, which serve for the positive locking complementary Hintergreifkonturen 115 at the Hintergreiffüßen 113. The Hintergreifkonturen 95, 115 are brought into engagement, wherein the respective upper container 400, 450 or the container attachment 70 down, to the top of the respective lower container, for example, the sucker housing 21 or the sucker housing 21, is pivoted, so that with respect to the axes transverse to the stacking direction H a positive or shear-resistant hold is given.

It is possible to arrange a further container attachment 70 above the container attachment 70 shown in the drawing and to couple it with the coupling means 90, 110. On the wall section 78 which protrudes inwards in front of the rear side wall 74 toward the receiving cavity 76, suitable rear gripping contours 95a are provided for cooperation with the rear gripping contours 115. There are support receptacles 94a for receiving the support feet 114 on the wall section 78 projecting inwardly from the front side wall.

The containers 400, 450 and in any case the nipple housing 21 are constructed on the underside similar to the container attachment 70, i. that there the support feet 114 and the rear grip feet 113 are also provided. On the container 450 also suitable Hintergreifkonturen 95 b are provided for engaging the Hintergreifkonturen 115.

The first coupling means 90 further comprise a locking element 96. A respective locking element 96 is rotatably arranged by means of a pivot bearing 98 on the cover 23 and the front side wall 72 of the container attachment 70.

The latch member 96 has an arcuate receptacle 97 which engages with retaining projections 116 and 117 by rotation. The arranged on the lid 23 locking element 96 is in the respective upper container or container attachment 70 coupling locking position or coupling position ( FIG. 1 ) Is rotated so that it covers the cover 23 with the arranged above the lid 23 holding projection 116 of the upper container or container attachment and the example on the base housing 22 or the container top 70 above, below the locking element 96th front side holding projection 117 is engaged at the same time. As a result, the pivot bearing 98 is relieved. At the same time the locking element 96 couples the respective containers tensile strength with respect to the stacking direction H.

The coupling between the container attachment 70 and the base unit 20 is made so favorable that the cover 23 can be opened with the container attachment 70 saddled on ( FIG. 10 ).

In FIG. 12 is a stack consisting of a container 450, on which the nipple housing 21 of the suction device 10 and in turn the container attachment 70 are arranged, is shown. On the upper side, a further container 450 is stacked on the container attachment 70. By the coupling means 90 and 110, the container 450 and the nipple housing 21 of the suction device 10 and the container attachment 70 are firmly connected to each other. For example, the locking elements 96 of the lower container 450 and the suction device 10 and the container attachment 70 are adjusted in the respective coupling position.

An advantageous sealing concept for the main filter 49 and a suitable assembly concept for the dirt collecting container 46 are presented below

On the wall 121 of the nipple housing housing section 120 with the suction unit 24, a bypass inlet 122 is provided for a bypass valve, not visible in the drawing, through which, if necessary, e.g. when the suction inlet 100 is closed, the suction unit 24 can flow cooling air into the interior of the housing section 120.

The main filter 49 comprises a seal 123 and a filter surface 124. The filter surface 124, which comprises for example a filter fleece or a pleated filter, is in a frame 125 of the filter holder 47 added. At the front of the frame 125 is a step 126 which supports the seal 123 at the back. Thus, therefore, the main filter 49 is supported by the filter holder 47 on its wall 121 opposite side back, so that the dirt collector 46 so to speak from behind presses on the seal 123 and thus against the wall 121, thus against a suction unit inlet 61 having inlet housing portion 127 presses. Thus, the seal 123 is close to the wall 121, so that the suction flow S from the suction inlet 27 forth first flows through the dirt collecting space 25, where usually a filter bag 50 retains particles, at least the main filter 49, the front of the suction unit inlet 61st is arranged, fulfills this function, so that in principle only clean, at least relatively few particles containing air of the suction flow S flows into the suction unit inlet 61 a.

However, even if the density plane between the seal 123 and the inlet housing portion 127 and / or between the seal 123 and the dirt collection container 46 does not function properly, i. that flows in between a sealing gap 129 between the inlet housing portion 127 and the dirt collecting container 46 secondary air N, this is unproblematic due to the favorable arrangement of the seal 123, the outer periphery 130 is the outer periphery of the main filter 49.

In the dirt collecting space 25 there is a negative pressure U when the suction unit 24 is in operation, so that there forms a negative pressure region 131. However, the secondary air N is not drawn from the negative pressure region 131, that is, the dirt collecting space 25, but from the vicinity of the suction device 10, that is, from a region of atmospheric pressure. There, the load with particles is much lower, so that certainly not or low laden with dirt air, namely the secondary air N, flows into the suction unit inlet 61.

In front of the suction unit inlet 61 is a protective grid 128, which projects in front of the wall 121. The grid 128 may protrude into the interior of the seal 123 ( FIG. 15 ). In any case, the seal 123 is located with its end face close to the wall 121 and surrounds the suction unit inlet 61 annular. Appropriately, it is provided that also the bypass inlet 122 is located in the interior and thus in the flow cross section of the seal 123. This need not be.

For a particularly favorable, tight fit of the seal 123 on the inlet housing portion 127, which so far represents a sealing seat for the seal 123, also provides the tensioning device 140 described below.

The tensioning device 140 comprises as an actuating member a carrying handle 141, which is mounted pivotably on the dirt collecting container 46 by means of pivot bearings 142, for example on its side walls 55, 57 next to the suction flow outlet 60.

The carrying handle 141 serves to carry the dirt collecting container 46. The carrying handle 141 can be arranged between a carrying position T (FIG. FIG. 17 ), in which the carrying handle 141 protrudes upwardly in front of the side walls 55-58 and its base leg 143 can be comfortably grasped by an operator, and a non-use position N (FIG. FIG. 16 ) are pivoted, in which the base leg 143 is not or only slightly protruding upward in front of the upper edges of the side walls 55-58. From the base leg 143 side legs 144 are U-shaped, whose free ends are arranged on the pivot bearings 142. For example, bearing bolts 145 are located in front of the side walls 55, 57 before and engage in corresponding bearing receptacles on the side legs 144 of the handle 141.

The carrying handle 141 is expediently not articulated in a longitudinally central region of the side walls 55, 57, so that the housing of the dirt collecting container 46 when carrying with the carrying handle 141 has a tendency to tip over, so that any dirt contained in the dirt collecting container 46 does not affect the main filter 49 pushes so that it is not pressed out of the filter holder 47 out and holds it well. This tilting tendency is indicated by an arrow 138 in FIG FIG. 17 indicated. The bearing concept of the carrying handle 141 thus provides relief of the main filter 49 advantageous.

The dirt collecting container 46 can be easily inserted from above by an operator holding the carrying handle 141 into the container receptacle 45. This is indicated by an arrow 146. Then, the carrying handle 141 is pivoted in the direction of an arrow 147, wherein at the same time the clamping device 140 assumes its clamping position P ( FIG. 18 ). In this case, a clamping surface 148 presses against an abutment surface 149 of the sucker housing 21. The abutment surface 149 is provided for example by a web 150 in the container receptacle 45. On opposite sides of the container receptacle 45, a web 150 is provided in each case, namely on the inner sides of the opposite side walls 29 and 31. In this sense, the carrying handle 141 has a respective clamping surface 148 in the side legs 144.

The clamping surface 148 is located on a clamping cam 151, which projects outwardly in front of the respective side legs 144. The two clamping cams 151 and thus also the clamping surfaces 148 are eccentric to the pivot axis 152 of the two pivot bearings 142 about which the carrying handle 141 pivots.

The webs 150, 158 form side walls of a receiving groove 161 for the clamping cam 151. Thus, therefore, the clamping cam 151 is guided and received in this receiving groove.

Due to the orientation of the clamping surfaces 148 and the associated abutment surfaces 149 parallel to the end face of the seal 123 and the opposite wall 121, the seal 123 is transverse to the direction indicated by the arrow 146 through axle, along which the dirt collecting container 46 is inserted into the container receptacle 45 evenly pressed against the inlet housing portion 127. The corresponding load is indicated by an arrow 139 in FIG FIG. 15 indicated. This has the advantageous consequence that the seal 123 very evenly applied to the opposite sealing seat of the wall 121 and no unwanted distortion, tilting or the like undergoes. The clamping device 140 is thus configured to a linear relative adjustment of the components to be clamped together and brought into a sealing contact, namely the inlet housing portion 127 and the end face of the seal 123, which is to come to rest thereon. Consequently, the clamping force in the direction of the arrow 139 substantially constant over the entire circumference of the seal 123 end face substantially.

The tensioning device 140 also tensions the dirt collecting container 46 in the container receptacle 45.

In the clamping position P, a catch 153 of a latching device 155 engages in a latching receptacle 154 on the suction housing 21. For example, the catch 153 is located approximately transversely on the base leg 143 of the carrying handle 141 and engages in a corresponding mating contour, for example an upper edge of the wall 121, in the sense of latching. Thus, not only the carrying handle 141, but also the clamping device 140 is locked in its clamping position P.

The tensioning device 140 at the same time forms or comprises a release device 160 for releasing the tensioning of the dirt collection container 46 in the container receptacle 45 and the tension between the seal 123 and the inlet housing region 127. Namely, there is a release bevel 156 on the tensioning cam 151 which pivots during pivoting of the carrying handle 141 against the arrow direction of the arrow 147, ie in the direction of a release position L, is supported on a support surface 157 of the sucker housing 21. The support surface 157 is opposite the abutment surface 149. For example, the support surface 157 is provided on a further wall projection or web 158. The webs 158, 150 are opposite each other and, as already mentioned, in the container receptacle 45 inside the side walls 29, 31 provided opposite each other.

Advantageously, an insertion bevel 159 is provided on which the clamping cam 151 slides with its release bevel 156 during insertion of the dirt collecting container 46 into the container receptacle 45. Thus, therefore, the insertion 159 forms an assembly aid. The insertion bevel 159 is e.g. at the top of the jetty 158.

In the Figures 20-23 are a first to the chuck 140 alternative clamping device 240 with a bevel gear and in the Figures 24-27 a second alternative tensioning device 340 is shown. The tensioners 240, 340 are provided to dirt collection tanks 246, 346. In the following description and in the Figures 20-27 are the same or similar components partially provided with the same and partially already described described reference numerals. The dirt collectors 246 and 346 provided with the chucks 240 and 340 correspond to the dirt collector 46, respectively.

An actuating member of the clamping device 240 forming carrying handle 241 has at its projecting from a base leg 243 side legs 244 each have a groove 251, into which a bearing pin 245 of a sliding bearing 242 engages. The bearing pins 245 are laterally from the dirt collector 246 from.

The carrying handle 241 can be linearly moved up and down between a carrying position T and a non-use position N along a sliding axis 247. In the carrying position T, the carrying handle 241 projects upwards in front of the dirt collecting container 246; in the non-use position N, it is moved closer to the housing of the dirt collecting container 246, so that it does not protrude slightly or slightly upwards in front of the cover 34 when the dirt collecting container 246 is accommodated in the nipple housing 21.

The grooves 251 extend obliquely with respect to the sliding axis 247 and, in the present case, also with respect to the directions of longitudinal extension of the side limbs 244. The inner walls of the grooves 251 provide an inclined surface arrangement 252 due to their oblique course.

When the carrying handle 241 is moved from the support position T in the non-use position N, he actuates the clamping device 240 from the release position L in the clamping position P. In this case, the groove 251 slides on the bearing pin 245 along, which represents a backdrop follower or sliding block insofar, said the Carrying handle 241 is adjusted with a clamping surface 248 in the direction of an abutment surface 249. On each side leg 244 each one provided by its longitudinal narrow side clamping surface 248 is present. Each clamping surface 248 is associated with an abutment surface 249. The abutment surfaces 249 are provided, for example, by webs similar to the web 150, which inwardly into the container receptacle 45th protrude. Thus, when the carrying handle 241 is displaced in the direction of the non-use position N, the clamping surfaces 248 are clamped against the abutment surfaces 249 and thereby exert a force on the main filter 49 in the direction of the suction unit inlet 61 (in the direction of the arrow 139).

At the associated in the clamping position P longitudinal end portion of the groove 251, a latching recess 254 is provided, into which the bearing pin 245 engages in the clamping position P. In that regard, the bearing pin 245 and the recess 254 form a latch 255.

The tensioning device 340 comprises a carrying handle 341, which serves as an actuating element for the tensioning device 340. On side legs 344, which protrude from a base leg 343 of the carrying handle 341, rollers 348 of a roller assembly 353 are rotatably mounted, which are supported in a clamping position P on an abutment surface 349. For example, the abutment surface 349 as well as the abutment surfaces 149 and 249 of a receiving groove or a corresponding web, for example in the manner of the web 150, is formed.

The carrying handle 341 is mounted on the dirt collecting container 346 by means of pivoting levers 350. The side legs 344 are pivotally mounted, for example by means of a respective pivot bearing 345 on a respective pivot lever 350. Of course, other joints may be provided. Furthermore, the carrying handle 341 could also be mounted on each side leg 344 with, for example, two pivoting levers, pivotably mounted on the dirt collecting container 346.

The pivot lever 350 in turn are in turn mounted by means of pivot bearings 342 on the dirt collecting 346.

The carrying handle 341 makes substantially a linear movement between the support position T and the non-use position N by. When adjusting between the support position T and the non-use position N, the two rollers 348 move up and down in the receiving groove 161, for example.

The rollers 348 are based on the in the FIGS. 26 and 27 When the dirt collecting container 346 abuts the bottom of the container receptacle 45, the actual adjustment movement of the carrying handle 341 from the carrying position T to the non-use position N begins, the rollers 348 rolling downwards. At the same time, the pivot levers 350 pivot about the pivot bearings 342. The pivot levers 350 thereby move from the in FIGS. 25 and 26 illustrated upper pivot position in an in FIG. 27 illustrated bottom pivot position across their dead centers, so that over the support by the rollers 348 a clamping force in the direction of arrow 139 is exerted. The gasket 123 is thereby tightened against the inlet housing portion 127. Thus, therefore, the pivot lever 350 forms part of a lever arrangement 352.

The clamping devices 240 and 340 also act as a release device when the respective carrying handles 241 and 341 are adjusted to the carrying position T.

It is understood that other actuators than, for example, the handles 141-341 could be provided, for example, a toggle lever assembly, slide, bolt, wedges or the like. Furthermore, inclined surfaces could also be provided which act, for example, on the housing of a dirt collecting container. Exemplary is in FIG. 15 an inclined surface 360 einskizziert, for example, on a corresponding counter contour 361 of the dirt collecting container 46 between the bottom 54 and the rear wall 56 could act.

It can also carry handles that do not serve as an actuator, be provided for carrying a dirt collector.

Furthermore, the substantially linear plug-in clamping movement during insertion of the dirt collecting container 46 in the container receptacle 45 as in the embodiments according to Figures 13-27 the case, to understand by way of example. It is also conceivable, for example, an embodiment in which the dirt collecting container 46, for example, by an exemplary in FIG. 14 drawn pivot axis 363 is pivoted into the container receptacle 45, for example, based on a pivot bearing with bearing pin and bearing receptacles on the dirt collector 46 and the container receptacle 45, then in the last movement section, for example, the inclined surfaces 360 and the mating contour 361 in terms of bracing the main filter 49 with the opposite sealing seat act on the inlet housing portion 127. An additional latch, clamping lever or the like can then provide a firm grip of the dirt collecting container 46 in the container receptacle 49 and thus also a tight sealing seat of the main filter 49 on the housing portion 120.

Claims (13)

1. Mobile suction device (10), in particular building site or workshop suction device, which has a suction housing (21) containing a suction unit (24) for generating a suction flow (S), wherein the suction housing (21) has a suction inlet (27) for the connection of a suction line (14), and the suction housing (21) contains a filter assembly (26) mounted in front of the suction unit (24), together with a dirt collecting chamber (25) provided for the collection of dirt and in which, due to the operation of the suction unit (24), a partial vacuum zone (131) forms, wherein the suction housing (21) has a dirt collecting container (46) which bounds the dirt collecting chamber (25) and has an inlet orifice (132) communicating with or forming the suction inlet (27) for the inflow of the suction flow (S), and a suction flow outlet (60) for the outflow of air to the suction unit (24), and wherein the suction flow outlet (60) of the dirt collecting chamber (25) and a suction unit inlet (61) of the suction unit (24) are in flow connection via a main filter (49) of the filter assembly (26) for the retention of dirt in the dirt collecting chamber (25), wherein an outer periphery (130) of the main filter (49) lies outside the partial vacuum zone (131) of the dirt collecting chamber (25), so that any extraneous air flowing into the suction unit inlet (61) in addition to the suction flow (S) flows from outside the dirt collecting chamber (25), and wherein it has a tensioning device (140-340) including in particular a tensioning mechanism for bracing the main filter (49) between the suction flow outlet (60) and an inlet housing area (127) of the suction housing (21) at which the suction unit inlet (61) is located, wherein the main filter (49) is braced in a tensioned position (P) of the tensioning device (140-340) between the suction flow outlet (60) and the inlet housing area (127), characterised in that the tensioning device (140-340) has a lever arrangement (352), in particular a toggle lever arrangement, including at least one lever arm, and/or an inclined surface arrangement (252) with at least one tensioning bevel, and/or a roller arrangement (353) for shifting the main filter (49) into the tensioned position (P).
2. Suction device according to claim 1, characterised in that there is provided between the suction unit inlet (61) and the suction flow outlet (60) a sealing gap (129), in which the outer periphery (130) of the main filter (49) is arranged.
3. Suction device according to claim 1 or 2, characterised in that the outer periphery (130) of the main filter (49) is formed by a seal (123) which extends around a filter surface (124) of the main filter (49), wherein the seal (123) is expediently material-bonded to the filter surface (124).
4. Suction device according to any of the preceding claims, characterised in that the tensioning device (140-340) is designed for a linear relative adjustment of the components to be braced against one another, so that an end face, in particular of the seal (123), of the main filter (49) is loaded evenly with tensioning force substantially over its entire surface area, by the assigned seal seat at the inlet housing area (127) or the dirt collecting container (46).
5. Suction device according to any of the preceding claims, characterised in that it has a latching device (155) for engaging the tensioning device (140-340), in particular an actuating element of the tensioning device (140-340), in the tensioned position (P).
6. Suction device according to any of the preceding claims, characterised in that it has a release device (160) for releasing the main filter (49) from the inlet housing area (127) or the dirt collecting container (46), wherein the release device (160) advantageously includes at least one release bevel (156) and/or a lever arrangement (352) acting for the purpose of release, and/or is formed expediently by the or by a tensioning device (140-340).
7. Suction device according to any of the preceding claims, characterised in that it has a carrying handle (141-341), in particular in the form of a strap or handle, or carrying the dirt collecting container (46).
8. Suction device according to claim 7, characterised in that the carrying handle (141-341) is hinged to the dirt collecting container (46) outside a geometrical centre of gravity of the dirt collecting container (46), so that the dirt collecting container (46) when being carried by the carrying handle (141-341) has a tendency to tilting which relieves stress on the main filter (49), and the main filter (49) lies higher than the lowest point of the dirt collecting chamber (25).
9. Suction device according to claim 7 or 8, characterised in that the carrying handle (141-341) is designed as an actuating organ for actuation of the tensioning device (140-340) and/or the release device (160), wherein the carrying handle (141-341) expediently acts as a lever arm or is fitted with swivelling capability to a lever arm (350), and/or the carrying handle (141-341) has at least one inclined surface of an inclined surface arrangement (252) or acts in conjunction with an inclined surface.
10. Suction device according to any of the preceding claims, characterised in that solid walls (55-58, 54) of the dirt collecting container (46) and/or a cover (23) bound the dirt collecting chamber (25) so that the dirt collecting chamber (25), during operation of the suction device (10), is closed up to the inlet orifice (132) and the suction flow outlet (60).
11. Suction device according to any of the preceding claims, characterised in that the dirt collecting container (46) forms a fixed part of the suction housing (21), or the dirt collecting container (46) may be removed to dispose of dirt from the suction housing (21) collected in the dirt collecting chamber (25).
12. Suction device according to any of the preceding claims, characterised in that the main filter (49) is located on a housing section (120) of the suction housing (21) which has the suction unit (24), wherein the housing section (120) and the dirt collecting container (46) may be brought together in flow connection, or that the main filter (49) is located on the dirt collecting container so that it is removed from the suction housing (21) on removal of the dirt collecting container (46).
13. Suction device according to any of the preceding claims, characterised in that the outer periphery (130) of the main filter extends in the manner of a frame around the suction flow outlet (60) which forms part of the dirt collecting container (46), and/or that the whole outer periphery of the main filter is located outside the partial vacuum zone.

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